CN105103637A - Device communication method and apparatus - Google Patents

Abstract

Disclosed are a device communication method and apparatus, which relate to the field of communications. The apparatus comprises: a resource allocation module, a signalling generation module, and a signalling transmission module. The method comprises: when an unlicensed spectrum is available for use, allocating to a UE first wireless resources of the unlicensed spectrum, said spectrum being a spectrum that allows all wireless access systems to compete for use thereof; on the basis of the allocated first wireless resources, generating control signalling corresponding to the UE, the control signalling carrying indication information used to indicate the first wireless resources; transmitting control signalling to the UE so that the UE can utilize the first wireless resources indicated in the indication information to implement data transfer in device-to-device (D2D) communication mode. The present invention solves the problem of eNB allocation of wireless resources to UEs in D2D communication mode being unable to meet the ever-increasing demand for spectrum. The invention thus increases communication efficiency between UEs operating in D2D communication mode.

Description

Device communication method and device

technical field

The present invention relates to the communication field, in particular to a device communication method and device. Background technique

The D2D (Device to Device, device to device) communication mode refers to a mode in which UEs (User Equipment, user equipment) perform direct communication by reusing spectrum resources of a cell. Since UEs can communicate directly, the D2D communication mode can reduce the overhead of control signaling between the base station and the UE, reduce UE transmit power, improve spectrum resource utilization, and increase the capacity of the cellular network.

When using the D2D communication mode for data transmission, the eNB (evolved Node B, evolved base station) allocates radio resources of the licensed spectrum to the first UE and the second UE respectively, and sends instructions to the first UE and the second UE. The measurement configuration for measuring the authorized spectrum, the first UE and the second UE add the information and radio conditions of the opposite end obtained during the measurement process to the measurement results and report to the eNB, and the eNB determines that the radio conditions are suitable for adopting the D2D communication mode When performing data transmission, sending to the first UE the first control signaling for instructing the first UE to send data on the allocated radio resources and sending to the second UE the first control signaling for instructing the second UE to receive data on the allocated radio resources The second control signaling, the first UE sends data on the radio resource according to the first control signaling, and the second UE receives data on the radio resource according to the second control signaling, realizing the communication between the first UE and the second UE data transmission. Wherein, the authorized spectrum refers to the spectrum allocated by the frequency regulatory agency to a designated wireless access system for exclusive use.

In the process of realizing the present invention, the inventor found that there are at least the following defects in the prior art: Since the licensed spectrum that the eNB can provide is certain, and the demand for spectrum and bandwidth of the service is constantly increasing, therefore, the eNB is in the D2D communication mode The radio resources allocated by the UEs in the D2D communication mode are difficult to meet the increasing spectrum demand, resulting in low communication efficiency between the UEs using the D2D communication mode. Contents of the invention

In order to solve the problem that the radio resources allocated by the eNB for UEs in the D2D communication mode are difficult to meet the ever-increasing spectrum demand, resulting in low communication efficiency between UEs using the D2D communication mode, an embodiment of the present invention provides a device communication method and devices. Described technical scheme is as follows: In a first aspect, an embodiment of the present invention provides a device communication device, which is used in a target device, and the device includes:

The resource allocation module is configured to allocate the first radio resource of the unlicensed spectrum to the user equipment UE when the unlicensed spectrum is in an available state, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

a signaling generation module, configured to generate control signaling corresponding to the UE according to the first radio resource allocated by the resource allocation module, where the control signaling carries indication information for indicating the first radio resource ;

a signaling sending module, configured to send the control signaling generated by the signaling generating module to the UE, so that the UE adopts device-to-device D2D on the first radio resource determined according to the indication information Communication mode realizes data transmission.

In a first possible implementation manner of the first aspect, the signaling sending module includes: a first sending unit configured to transmit the second radio resource of the licensed spectrum configured for the UE to the eNB through the evolved base station eNB. The UE sends the control signaling; or,

a second sending unit, configured to send the control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indicates The information is sent by the eNB on the second radio resource of the authorized frequency spectrum configured by the eNB for the UE.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the second sending unit includes:

a first sending subunit, configured to send the control signaling indication information to the UE through the second radio resource when the target device is an eNB, and then use the control signaling indication information to determine the The third radio resource sends the control signaling to the UE, so that the UE receives the control signaling on the third radio resource determined by the control signaling indication information;

a second sending subunit, configured to, when the target device is the master UE sending the control signaling, determine that the UE receiving the control signaling is a slave UE, and receive the eNB on the second radio resource the control signaling indication information sent, and then send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE receiving the control signaling on the third radio resource determined by the indication information.

In a third possible implementation manner of the first aspect, the device further includes:

A signal detection module, configured to detect the signal quality of the unlicensed spectrum every predetermined time; The first communication module is configured to instruct the UE to use the D2D communication mode to implement data transmission when the signal detection result of the signal detection module is that the signal quality of the unlicensed spectrum satisfies a preset condition; the second communication module, When the signal detection module detects that the signal quality of the unlicensed spectrum does not meet a preset condition, instruct the UE to use a cell communication mode to implement data transmission, and the cell communication mode means that the UE passes The eNB performs data transmission.

In a fourth possible implementation manner of the first aspect, if the target device is the master UE and the D2D communication mode is broadcast or multicast, the apparatus further includes:

a data dissemination module, configured to send data to at least one slave UE on the first radio resource in a broadcast or multicast manner after the signaling sending module sends the control signaling to the UE;

A data sending module, configured to send the data to the slave UE again on the fourth radio resource of the authorized spectrum if there is a slave UE that has not received the data propagated by the data spreading module.

In combination with the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Implementation manner. In a fifth possible implementation manner of the first aspect, the resource allocation module includes:

a first allocating unit, configured to determine an available unlicensed spectrum if the target device is an eNB and there is no UE served by other eNBs among the UEs, and select from the determined unlicensed spectrum using the first radio resource of the unlicensed spectrum as the allocated first radio resource;

The second allocating unit is configured to receive an unlicensed spectrum resource pool allocated by an eNB if the target device is a primary UE and there is no secondary UE served by another eNB among the secondary UEs, the unlicensed spectrum resource pool Including the unlicensed spectrum in an available state, the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource.

In combination with the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Implementation manner. In a sixth possible implementation manner of the first aspect, the resource allocation module includes:

A third allocating unit, configured to perform allocation negotiation with the other eNB if the target device is an eNB and there is at least one UE served by another eNB among the UEs, and combine the eNB and the eNB obtained through negotiation The first radio resource of the unlicensed spectrum commonly occupied by other eNBs is used as the allocated first radio resource; A fourth allocating unit, configured to receive unlicensed spectrum resources sent by the eNB serving the master UE if the target device is a master UE and there is at least one slave UE served by other eNBs among the slave UEs pool, the unlicensed spectrum resource pool is determined to be jointly occupied by the eNB and the other eNB after the allocation negotiation, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocation of the first wireless resource.

In combination with the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Implementation manner. In a seventh possible implementation manner of the first aspect, the resource allocation module includes:

A fifth allocating unit, configured to dynamically allocate the first radio resource of the unlicensed spectrum to the UE for each data transmission using the D2D communication mode; or,

A sixth allocating unit, configured to allocate the first radio resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, where the semi-static allocation strategy is to assign the unlicensed spectrum each time the unlicensed spectrum is available A strategy for allocating the first radio resource of the unlicensed spectrum.

In a second aspect, an embodiment of the present invention provides a device communication device, which is used in a target device, and the device includes:

a processor, configured to allocate a first radio resource of the unlicensed spectrum to the user equipment UE when the unlicensed spectrum is in an available state, where the unlicensed spectrum refers to a spectrum used by various wireless access systems for competition; The allocated first radio resource generates control signaling corresponding to the UE, where the control signaling carries indication information for indicating the first radio resource;

a transmitter, configured to send the control signaling generated by the processor to the UE, so that the UE uses a device-to-device D2D communication mode to implement data on the first radio resource determined according to the indication information transmission.

In a first possible implementation manner of the second aspect, the transmitter is specifically configured to send the control signaling to the UE through the second radio resource of the authorized spectrum configured by the evolved base station eNB for the UE or, sending the control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is that the eNB The eNB transmits on the second radio resource of the authorized frequency spectrum configured for the UE.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the processor is specifically configured to: when the target device is an eNB, through the second wireless The resource sends the control signaling indication information to the UE, and then indicates the information through the control signaling The determined third radio resource sends the control signaling to the UE, so that the UE receives the control signaling on the third radio resource determined by the control signaling indication information; when the When the target device is the master UE that sends the control signaling, determine that the UE receiving the control signaling is a slave UE, receive the control signaling indication information sent by the eNB on the second radio resource, and then Send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE operates on the third radio resource determined by the control signaling indication information Receive the control signaling.

In a third possible implementation manner of the second aspect, the processor is further configured to detect the signal quality of the unlicensed spectrum every predetermined time; if the detection result is that the signal quality of the unlicensed spectrum meets the preset Setting a condition, instructing the UE to implement data transmission using the D2D communication mode; if the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, instructing the UE to implement data transmission using a cell communication mode, the The cell communication mode refers to that the UE performs data transmission through the eNB.

In a third possible implementation manner of the second aspect, if the target device is a master UE and the D2D communication mode is broadcast or multicast, the transmitter is further configured to send the UE the After the above control signaling, send data to at least one secondary UE on the first radio resource in a broadcast or multicast manner; if there is a secondary UE that has not received the data, then on the fourth radio resource of the authorized spectrum sending the data to the secondary UE again.

In combination with the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth possible implementation of the second aspect Implementation manner. In a fifth possible implementation manner of the second aspect, the processor is specifically configured to determine that if the target device is an eNB and there is no UE served by other eNBs among the UEs, An unlicensed spectrum in an available state, using the first wireless resource of the unlicensed spectrum selected from the determined unlicensed spectrum as the allocated first wireless resource; if the target device is a master UE and the slave If there is no slave UE served by other eNBs in the UE, the unlicensed spectrum resource pool allocated by the eNB is received. The unlicensed spectrum resource pool includes unlicensed spectrum in an available state, and the unlicensed spectrum resource pool The selected first radio resource of the unlicensed spectrum is used as the allocated first radio resource.

In combination with the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth possible implementation of the second aspect Implementation manner. In a sixth possible implementation manner of the second aspect, the processor specifically uses If the target device is an eNB and there is at least one UE served by other eNBs among the UEs, perform allocation negotiation with the other eNBs, and use the negotiated eNB and the other eNBs to occupy the The first radio resource of the authorized spectrum is used as the allocated first radio resource; if the target device is a master UE and there is at least one slave UE that is served by another eNB among the slave UEs, receiving the The unlicensed spectrum resource pool sent by the eNB providing the service, the unlicensed spectrum resource pool is determined to be jointly occupied by the eNB and the other eNB after the allocation negotiation, and will be selected from the unlicensed spectrum resource pool The first wireless resource of the unlicensed spectrum is used as the allocated first wireless resource.

In combination with the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth possible implementation of the second aspect Implementation manner. In a seventh possible implementation manner of the second aspect, the processor is specifically configured to dynamically allocate the unlicensed frequency spectrum to the UE for each data transmission in the D2D communication mode. The first radio resource; or, allocate the first radio resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, and the semi-static allocation strategy is to assign the unlicensed spectrum to the UE every time the unlicensed spectrum is in an available state A strategy for allocating the first radio resource of the unlicensed spectrum.

In a third aspect, an embodiment of the present invention provides a device communication method used in a target device, the method comprising:

When the unlicensed spectrum is in an available state, allocate the first radio resource of the unlicensed spectrum to the user equipment UE, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

generating control signaling corresponding to the UE according to the allocated first radio resource, where the control signaling carries indication information for indicating the first radio resource;

Sending the control signaling to the UE, so that the UE implements data transmission in a device-to-device D2D communication mode on the first radio resource determined according to the indication information.

In a first possible implementation manner of the third aspect, the sending the control signaling to the UE includes:

sending the control signaling to the UE through the second radio resource of the licensed spectrum configured by the eNB for the UE; or,

sending the control signaling to the UE through a third radio resource of the unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is the eNB in the eNB sending on the second radio resource of the licensed frequency spectrum configured for the UE.

In combination with the first possible implementation of the third aspect, the second possible implementation of the third aspect In a manner, the sending the control signaling to the UE through the first radio resource includes: when the target device is an eNB, sending the control signaling to the UE through the second radio resource signaling indication information, and then send the control signaling to the UE through the third radio resource determined by the control signaling indication information, so that the UE receiving the control signaling on a wireless resource;

When the target device is the master UE that sends the control signaling, determine that the UE that receives the control signaling is a slave UE, and receive the control signaling indication sent by the eNB on the second radio resource information, and then send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE can use the third radio resource determined by the control signaling indication information The control signaling is received on a radio resource.

In a third possible implementation manner of the third aspect, the method further includes:

detecting the signal quality of the unlicensed spectrum at predetermined intervals;

If the detection result is that the signal quality of the unlicensed spectrum satisfies a preset condition, instruct the UE to use the D2D communication mode to implement data transmission;

If the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, instruct the UE to use a cell communication mode to implement data transmission, and the cell communication mode refers to the UE performing data transmission through the eNB.

In a fourth possible implementation manner of the third aspect, if the target device is a master UE and the D2D communication mode is broadcast or multicast, after sending the control signaling to the UE, Also includes:

sending data to at least one secondary UE on the first radio resource by broadcasting or multicasting; if there is a secondary UE that has not received the data, sending data to the secondary UE again on a fourth radio resource of the authorized spectrum Send the data.

In combination with the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect Implementation manners. In a fifth possible implementation manner of the third aspect, the allocating the first radio resource of the unlicensed spectrum to the user equipment UE includes:

If the target device is an eNB and there is no UE that is served by other eNBs among the UEs, then determine an available unlicensed spectrum, and select the unlicensed spectrum selected from the determined unlicensed spectrum a radio resource as the allocated first radio resource;

If the target device is a master UE and there is no slave UE served by other eNBs in the slave UE The UE receives an unlicensed spectrum resource pool allocated by the eNB, the unlicensed spectrum resource pool includes an available unlicensed spectrum, and selects the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool as the allocated first radio resource.

In combination with the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect Implementation manner, in a sixth possible implementation manner of the third aspect, the allocating the first radio resource of the unlicensed spectrum to the user equipment UE includes:

If the target device is an eNB and there is at least one UE served by other eNBs among the UEs, perform allocation negotiation with the other eNBs, and use the negotiated unlicensed shared shared eNB and other eNBs The first radio resource of the frequency spectrum is used as the first radio resource allocated; if the target device is a master UE and there is at least one slave UE that is served by another eNB among the slave UEs, receiving the The unlicensed spectrum resource pool sent by the serving eNB, the unlicensed spectrum resource pool is determined to be jointly occupied by the eNB and the other eNB after the allocation negotiation, and the unlicensed spectrum resource pool selected from the unlicensed spectrum resource pool The first radio resource of the authorized frequency spectrum is used as the allocated first radio resource.

In combination with the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect Implementation manners. In a seventh possible implementation manner of the third aspect, the allocating the first radio resource of the unlicensed spectrum to the user equipment UE includes:

For each data transmission using the D2D communication mode, dynamically allocate the first radio resource of the unlicensed spectrum to the UE; or,

Allocating the first radio resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, where the semi-static allocation strategy is the first radio resource of the unlicensed spectrum each time the unlicensed spectrum is in an available state A strategy for allocating radio resources.

The beneficial effects of the technical solution provided by the embodiments of the present invention are:

By allocating the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generating control signaling corresponding to the UE according to the allocated first radio resource, the control signaling carrying information for indicating the first radio resource the instruction information; sending a control signaling to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the instruction information, and can use the D2D communication on the first radio resource of the unlicensed spectrum in an available state mode for data transmission without additionally allocating wireless resources on the licensed spectrum for the UE, which solves the problem that the eNB supports the D2D communication mode In the formula, the radio resources allocated by the UEs are difficult to meet the increasing spectrum demand, which leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode. Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

FIG. 1 is a structural frame diagram of a device communication device provided by an embodiment of the present invention;

FIG. 2 is a structural frame diagram of a device communication device provided by another embodiment of the present invention;

FIG. 3 is a structural frame diagram of a device communication device provided by another embodiment of the present invention;

FIG. 4 is a structural frame diagram of a device communication device provided by another embodiment of the present invention;

Fig. 5 is a method flowchart of a device communication method provided by an embodiment of the present invention;

FIG. 6 is a method flowchart of a device communication method provided by another embodiment of the present invention;

Fig. 7 is a method flowchart of a device communication method provided by another embodiment of the present invention. Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe in detail the embodiments of the present invention in conjunction with the accompanying drawings. This embodiment relates to a device communication method, in which a UE adopting a D2D communication mode transmits data on wireless resources of an unlicensed spectrum. The unlicensed spectrum is used by various wireless access systems, and the wireless access system needs to release the wireless resources of the unlicensed spectrum after a certain period of time, and restart the competition for the wireless resources of the unlicensed spectrum after a certain period of time, so as to give each Wireless access systems have the opportunity to fairly compete and use wireless resources in unlicensed spectrum. Wherein, the wireless access system refers to a system that accesses a network through a RAT (Radio Access Technology, wireless access technology). The wireless access system includes a cellular network system, a WiFi (Wireless Fidelity, Wireless Fidelity) system, a Bluetooth system, and a Zigbee (Purple Peak) system, etc. Cellular networks include LTE (Long Term Evolution, Long Term Evolution), LTE-A (LTE-Advance, Advanced Long Term Evolution Technology), GSM (Global System for Mobile communication, Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System, Universal Mobile Communication System) and CDMA (Code Division Multiple Access, Code Division Multiple Access) 2000, etc.

This embodiment is described by taking the device communication method applied to LTE-A as an example. CA (Carrier Aggregation, carrier aggregation) of LTE-A aggregates multiple continuous or discontinuous CCs (Component Carrier, component carrier) to Increase peak user data rates and system throughput. The aggregated component carriers include one PCelK Primary Cell (primary cell) and 0 to 5 SCelK Secondary Cells (secondary cell). The PCell is the cell when the UE initially accesses the system during the random access process or the cell when it accesses the target base station during the handover process. The PCell also provides security and NAS (Non-Access Stratum, non-access stratum) signaling transmission. SCell mainly provides additional wireless resources for data transmission. Therefore, LTE-A can use the unlicensed spectrum through the CA technology, that is, use the unlicensed spectrum as the SCell. Please refer to FIG. 1, which shows a structural framework diagram of a device communication device provided by an embodiment of the present invention. The device communicator can be used in target devices, including:

The resource allocation module 110 is configured to allocate the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is available, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

After determining that the unlicensed spectrum is available, the target device can allocate the first radio resource of the unlicensed spectrum to the UE. For example, if the unlicensed spectrum in the frequency region of 5170-5190MHZ is available, the target device can select a PRB (Physical Resource Block, Physical Resource Block) in the frequency region of 5170-5175MHz from 5170-5190MHZ to use the D2D communication mode to implement For data transmission, select the PRB in the 5170-5172MHz frequency region from the PRBs in the 5170-5175MHz frequency region as the first wireless resource for the UE; or, the target device can directly select the 5170-5172MHz frequency region in the 5170-5190MHZ The PRB is used as the first radio resource for the UE, and the frequency resources used for D2D communication may also be discontinuous. For different D2D communication UEs, PRBs in different frequency regions in 5170-5190 MHz may be selected, which is not limited in this embodiment. The way in which the target device allocates the first wireless resource does not limit whether the D2D communication uses the uplink resource or the downlink resource of the cell.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB and/or the UE is far away or the power is low, the eNB and the UE Unlicensed spectrum can still be used for normal communication between UEs or between UEs without causing serious interference to other wireless access systems.

The signaling generation module 120 is configured to generate control signaling corresponding to the UE according to the first radio resource allocated by the resource allocation module 110, where the control signaling carries indication information for indicating the first radio resource; For the first radio resource of the unlicensed spectrum allocated by the UE, the target device needs to obtain indication information of the first radio resource, and add the indication information to the control signaling and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region. In this embodiment, a time slot refers to a transmission time interval TTI (Transmission Time Interval), that is, a scheduling time unit. In LTE, one TTI corresponds to a subframe (subframe), which occupies 1 ms of time, including two time slots (slot ).

The signaling sending module 130 is configured to send the control signaling generated by the signaling generating module 120 to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information.

After the target device sends the control signaling to the UE, the UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode. Please refer to FIG. 2, which shows a structural framework diagram of a device communication device provided by another embodiment of the present invention. The device communication device can be used in the target device. In this embodiment, the target device is an eNB in a cellular network as an example. The eNB can be a micro base station, a small base station, or a macro base station. Usually, the different types of base station transmit power and Coverage varies. The device communication device includes: a resource allocation module 110, a signaling generation module 120 and a signaling sending module 130;

The resource allocation module 110 is configured to allocate an unlicensed spectrum to the UE when the unlicensed spectrum is available. The first wireless resource of the licensed spectrum, the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

In this embodiment, the eNB needs to configure a carrier for each of at least two UEs. Specifically, the eNB can configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the UE.

After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether at least two UEs can use the D2D communication mode for data transmission. Taking at least two UEs as the first UE and the second UE as an example, the eNB can send the measurement configuration to the first UE and the second UE respectively, and the measurement configuration can use the same message or a different message from the configured carrier sent to the first UE and the second UE. The first UE and the second UE respectively send the measurement results obtained from the measurement to the eNB according to the measurement configuration, and the eNB determines whether the unlicensed spectrum is available and whether at least two UEs can use the D2D communication mode for data transmission according to the measurement results.

Specifically, the eNB sends the measurement configuration to the first UE as an example for illustration, then the measurement configuration instructs the first UE to perform spectrum sensing or spectrum detection on the unlicensed spectrum where the SCell is located, and the first UE detects through the physical layer energy (Energy Sensing or Energy Detection) or Matched Filter Detection (Matched Filter Detection) or Covariance Matrix Detection (Covariance Matrix Detection) or Cyclostationary, Feature Detection (Cyclostationary Feature Detection) or Eigenvalue Based Spectrum Sensing ) or RSSI (Received Signal Strength Indication, received signal strength indication) or interference measurement (Interference Measurement) or SNR (Signal To Noise Rate, signal-to-noise ratio) measurement or SINR (Signal To Interference Noise Rate, signal-to-interference-noise ratio) measurement or Techniques such as ROT (Rise Over Thermal) measurement detect the availability status of the unlicensed spectrum, and add the detection result to the measurement report and send it to the eNB. The eNB determines whether the unlicensed spectrum is available according to the measurement results. The method for performing spectrum sensing or frequency language detection on the unlicensed spectrum in the following is the same as that in this embodiment, and will not be described in detail below.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the UE and the UE without causing serious interference to other wireless access systems.

In addition, the measurement configuration may also include the communication identifier, synchronization identifier, and discovery signal of the first UE, so that the first UE sends the discovery signal and the communication identifier when receiving the synchronization identifier, and the second UE receives the synchronization identifier. When the synchronization identifier included in the measurement configuration is received, the discovery signal and the communication identifier sent by the first UE are received, and RSRP (Reference Signal Received Power, reference signal received power) or CQI (Channel Quality Indication, channel) is measured according to the synchronization signal and/or the discovery signal Quality indication) or path loss (Pathloss), etc., add the communication identifier of the first UE and other data obtained by measurement to the measurement report and send it to the eNB, and the eNB will determine that the distance between the first UE and the second UE is relatively short and When the signal quality is good, it is determined that the D2D communication mode can be used to transmit data between the first UE and the second UE on radio resources of the unlicensed spectrum.

After determining that the unlicensed spectrum is available and at least two UEs can use the D2D communication mode to transmit data, the eNB can allocate the first radio resource of the unlicensed spectrum to the UE. For example, if the unlicensed spectrum in the frequency region 5170-5190MHZ is available, the eNB can select a PRB in the 5170-5175MHz frequency region from the 5170-5190MHz for data transmission in the D2D communication mode, and then in the 5170-5175MHZ frequency region Select the PRB in the 5170-5172MHz frequency region from the PRBs as the first radio resource for the UE; or, the eNB may directly select the PRB in the 5170-5172MHz frequency region from the 5170-5190MHZ as the first radio resource for the UE. The frequency resources used for D2D communication may also be discontinuous. For different D2D communication UEs, PRBs in different frequency regions of 5170-5190MHz can be selected. This implementation of a radio resource allocation method does not limit the use of cells for D2D communication. of

The signaling generation module 120 is configured to generate control signaling corresponding to the UE according to the first radio resource allocated by the resource allocation module 110, where the control signaling carries indication information for indicating the first radio resource; For the first radio resource of the unlicensed spectrum allocated by the UE, the eNB needs to obtain indication information of the first radio resource, and add the indication information to the control signaling corresponding to the UE and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region.

Since when data is transmitted in the D2D communication mode, the UE can only perform a receiving operation or a sending operation at the same time, therefore, the eNB also needs to indicate the operation type of the UE in the control signaling. For example, when the first UE sends data and the second UE receives data, the control signaling corresponding to the first UE is used to instruct the first UE to send data from a certain frequency region in a certain time slot, and the control signaling corresponding to the second UE The control signaling is used to instruct the second UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the first UE to send data in the first type of time slot, the second UE to receive data in the first type of time slot, and the first UE to receive data in the second type of time slot, and the second UE to send data in the second type of time slot data, where the first class of slots and The second type of time slots are different, they together form all time slots or part of time slots, then the first UE and the second UE send and receive data according to the pre-configured time slot positions, and the eNB does not need to instruct the operation of the UE through control signaling type.

The signaling sending module 130 is configured to send the control signaling generated by the signaling generating module 120 to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information.

After the eNB sends the control signaling to the UE, the UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

Optionally, the signaling sending module 130 includes:

The first sending unit 131 is configured to send control signaling to the UE through the second radio resource of the authorized spectrum configured by the eNB for the UE; or,

In order to ensure that the UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the eNB may configure the second radio resource of the authorized spectrum for sending the control signaling. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the eNB can use the PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) or EPDCCH (Enhanced PDCCH, Enhanced Physical Downlink Control Channel) on the PCell ) to send control signaling to the UE. When the second radio resource is used for the PDCCH, the second radio resource includes the first to second or first to third OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) of the subframe where the PDCCH is sent in the time domain The position of the control domain of a symbol (symbol) may occupy a part of the frequency range where the PCell is located in the frequency domain, and is determined by the amount of resources required by the PDCCH signaling itself, such as PDCCH format, resource allocation information and other factors. When the second radio resource is used for the EPDCCH, the frequency range of the resource is pre-configured by RRC (Radio Resource Control, radio resource control) signaling, and occupies a PDSCH (Physical Downlink Shared Channel, physical downlink) outside the PDCCH control domain in the time domain The OFDM symbol position of the link shared channel) data area, the user data on the frequency domain and on the PDSCH are multiplexed in the FDM (Frequency Division Multiplexing, Frequency Division Multiplexing) mode, and the specific amount of resources occupied is determined by the format and resources of the EPDCCH Factors such as allocation information are determined. The manner of determining and using the second wireless resource in the following is the same as the manner of determining and using the second wireless resource in this embodiment, and will not be described in detail below.

The second sending unit 132 is configured to send control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is eNB in eNB for UE and send on the configured second radio resource of the licensed frequency spectrum. In order to further avoid or reduce the occupation of the second radio resource by the UE, so as to save resources on the licensed spectrum, the eNB may also send a message to the UE through the third radio resource allocated to the UE when it detects that the unlicensed spectrum is in an available state. Corresponding control signaling. At this time, in order for the UE to clearly receive the control signaling from which frequency region in which time slot, the eNB also needs to send control signaling indication information to the UE in advance on the second radio resource of the licensed frequency spectrum. The control signaling indication information It is used to indicate in which time slot the UE receives the control signaling from which frequency region; or, the eNB can pre-configure the time slot and resources for the UE to receive the control signaling, and the UE determines which time slot to use from which frequency region according to the pre-configuration. One frequency region receives control signaling. Wherein, the first wireless resource is used to transmit data on the unlicensed spectrum, and the third wireless resource is used to transmit control signaling on the unlicensed spectrum. The third radio resource can be used for PDCCH or EPDCCH, and the resource occupation mode is the same as that of the second radio resource, except that the third radio resource is located in a part of the frequency range where the SCell is located. The manner of determining and using the third radio resource in the following is the same as the manner of determining and using the third radio resource in this embodiment, and will not be described in detail below.

Optionally, the second sending unit 132 includes:

The first sending subunit 1321 is configured to, when the target device is an eNB, send control signaling indication information to the UE through the second radio resource, and then send control signaling to the UE through the third radio resource determined by the control signaling indication information, So that the UE receives the control signaling on the third radio resource determined by the control signaling indication information.

Specifically, the eNB may pre-allocate a third radio resource for sending control signaling to at least two UEs on the unlicensed spectrum, and add the indication information used to indicate the third radio resource to the control signaling indication information, by The second radio resource sends control signaling indication information to each UE, and then sends control signaling corresponding to the UE to each UE on the third radio resource, and the UE determines to receive the UE according to the received control signaling indication information. Control the third radio resource for the signaling, and receive the control signaling on the determined third radio resource.

Optionally, the device also includes:

The signal detection module is configured to detect the signal quality of the unlicensed spectrum at predetermined intervals; the first communication module is configured to instruct the UE to use D2D communication when the signal detection result of the signal detection module is that the signal quality of the unlicensed spectrum meets the preset condition mode for data transmission;

The second communication module is used to instruct the UE to use the cell communication mode to implement data transmission when the signal detection result of the signal detection module is that the signal quality of the unlicensed spectrum does not meet the preset condition. The cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the UE can transmit data in the D2D communication mode on the first radio resource not only depends on the non- Whether the licensed spectrum resource is available also depends on the signal quality of the unlicensed spectrum. Therefore, in order to avoid the problem that the communication efficiency between UEs is not high due to the poor signal quality of the unlicensed spectrum, the eNB can detect the unlicensed The signal quality of the licensed spectrum or instructing the UE to detect the signal quality of the unlicensed spectrum every predetermined time. If the detection result is that the signal quality of the unlicensed spectrum meets the preset conditions, the eNB determines to continue to use the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the eNB determines to use the cell communication mode Data, that is, the first UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the second UE through the second radio resource; or the first UE sends the data to the eNB through the second radio resource, The eNB further sends the data to the core network and the application server, and the application server and the core network forward the data to the second UE through the eNB or other eNBs, so as to realize data transmission between UEs.

It should be added that when UEs use the cell communication mode for data transmission, the eNB can also detect the signal quality of the unlicensed spectrum at predetermined intervals, and when the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, Instructing the UE to implement data transmission using the D2D communication mode; instructing the UE to continue using the cell communication mode to implement data transmission when the detection result shows that the signal instruction of the unlicensed spectrum does not meet the preset conditions.

Wherein, the preset condition may include at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum wireless condition lower than the threshold is less than or equal to the second threshold. Of course, the preset conditions may also be modified, and this embodiment does not limit the preset conditions.

Optionally, the resource allocation module 110 includes:

The first allocating unit 111 is configured to determine an available unlicensed spectrum if the target device is an eNB and there is no UE served by other eNBs in the UE, and select an unlicensed spectrum selected from the determined unlicensed spectrum The first radio resource of is used as the allocated first radio resource.

If at least two UEs using the D2D communication mode for data transmission are served by the eNB, the eNB may directly allocate the first radio resource of the unlicensed spectrum to the at least two UEs. Specifically, the eNB may determine the unlicensed spectrum that is in an available state. For example, the eNB determines that the unlicensed spectrum in the frequency region of 5170-5190 MHz is in an available state; The radio resource is used as the allocated first radio resource. For example, the eNB selects a PRB in the frequency region of 5170-5172 MHz from 5170-5190 MHz as the first radio resource used by the UE.

Optionally, the resource allocation module 110 includes:

The third allocating unit 113 is configured to if the target device is an eNB and there is at least one of UEs that is assigned by other The UE, which is served by the eNB, conducts allocation negotiation with other eNBs, and uses the negotiated first radio resource of the unlicensed spectrum jointly occupied by the eNB and other eNBs as the allocated first radio resource.

If at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB, the eNB also needs to negotiate with the other eNB when allocating the first radio resource of the unlicensed spectrum. Among them, the eNB serving as the target device refers to the eNB that provides PCell and SCell on the unlicensed spectrum for the UE, and other eNBs refer to other eNBs that use at least unlicensed spectrum. The eNB and other eNBs can be adjacent and provide different cells. For example, the first The eNB and the second eNB; or, the eNB and other eNBs may provide a cell for inter-eNB carrier aggregation, for example, the primary eNB and the secondary eNB.

Specifically, the eNB adds the information of the wireless resources that it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. The radio resource may be occupied, and the determined radio resource is used as the first radio resource, and the other eNB notifies the eNB of the determined first radio resource.

Assuming that the eNB provides services to the first UE, and other eNBs provide services to the second UE, the eNB sends control signaling to the first UE according to the determined third radio resources, and at the same time, other eNBs send control signaling to the second UE according to the determined third radio resources. The UE sends the control signaling, and after receiving the control signaling, the first UE and the second UE perform data transmission in the D2D communication mode on the first radio resource.

It should be noted that the UEs that transmit data in the D2D communication mode should be in the same discontinuous reception DRX (Discontinueous Reception) state, for example, the first UE and the second UE can only receive control signaling during active time (active time) .

Optionally, the resource allocation module 110 includes:

The fifth allocation unit 115 is configured to dynamically allocate the first wireless resource of the unlicensed spectrum to the UE for each data transmission using the D2D communication mode; or,

In this embodiment, the HARQ (Hybrid Automatic Retransmission Request, hybrid automatic retransmission) technology can be used for data transmission between UEs, and the eNB can dynamically allocate the first part of the unlicensed spectrum to at least two UEs at each new HARQ transmission. The wireless resources are allocated in the above manner, which is not discussed here.

The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum Uplink transmits HARQ feedback. For example, use PCell's PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) for feedback or SCell Feedback is performed on the PUCCH or PUSCH on the network, which is not limited in this embodiment.

When the HARQ feedback indicates that a certain new transmission data is lost, HARQ retransmission is required. The eNB can dynamically allocate the first wireless resource of the unlicensed spectrum for at least two UEs at each HARQ retransmission, the allocation method is as described above, and will not be described here; or, the eNB can use the last time at each HARQ retransmission The first radio resource allocated during HARQ retransmission or HARQ new transmission.

The sixth allocating unit 116 is configured to allocate the first wireless resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy. Resource allocation strategy.

In this embodiment, the eNB can allocate the first radio resources of the unlicensed spectrum to at least two UEs according to the pre-configured semi-static allocation strategy each time the unlicensed spectrum is available, without dynamically allocating each new HARQ transmission A first wireless resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation policy is as described above, and will not be repeated here.

Specifically, the eNB may respectively configure the period of the first radio resource for each UE through RRC signaling, and then send a semi-static allocation strategy to each UE through the PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

It should be added that if at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB, and the eNB dynamically allocates the first radio resource or the eNB allocates the first radio resource according to a semi-static allocation strategy , the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNBs respectively use the third radio resource to send the control signaling to the UE in the same time slot, and the frequency can be different, so that each After receiving the control signaling, a UE transmits data on the first radio resource according to the time slot determined by the control signaling. If at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB and the eNB allocates the first radio resource according to the semi-static allocation strategy, since the UE determines the data transmission according to the available time of the unlicensed spectrum The time slot is not the control signaling. Therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the first UE and the second UE at the same subframe position in different radio frames, so that the first UE and the second UE that use the D2D communication mode to transmit data are connected between the eNB and other eNBs. When the first wireless resource is jointly occupied, the first wireless resource may be used for data transmission. This embodiment does not limit the above two transmission modes of the control signaling. To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. Please refer to FIG. 3, which shows a structural framework diagram of a device communication device provided by another embodiment of the present invention. The device communication device can be used in the master UE, and the UEs that are not declared to be the master UE in the embodiment are all slave UEs, and the master UE and the slave UE can be specified dynamically or through a semi-static allocation strategy. The device communication device includes: a resource allocation module 110, a signaling generation module 120 and a signaling sending module 130;

The resource allocation module 110 is configured to allocate the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is available, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

In this embodiment, the eNB needs to configure a carrier for the master UE and each of the at least one slave UE respectively. Specifically, the eNB may configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the master UE and at least one slave UE.

After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether the D2D communication mode can be used for data transmission between the master UE and at least one slave UE. Taking the master UE and the slave UE as an example for illustration, the eNB can send the measurement configuration to the master UE and the slave UE respectively, and the measurement configuration and the configured carrier can be sent to the master UE and the slave UE using the same message or a different message. According to the measurement configuration, the master UE and the slave UE send the measured measurement results to the eNB, and the eNB determines whether the unlicensed spectrum is available and whether the communication between the master UE and the slave UE can be carried out according to the measurement results. Use D2D communication mode for data transmission.

Specifically, take the eNB sending the measurement configuration to the main UE as an example for illustration, then the measurement configuration instructs the main UE to perform spectrum sensing or spectrum detection on the unlicensed spectrum where the SCell is located, and add the detection result to the measurement report and send it to the eNB . The eNB determines whether the unlicensed spectrum is available according to the measurement results.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the master UE and the slave UE without causing serious interference to other wireless access systems.

In addition, the measurement configuration may also include the communication identifier, synchronization identifier, and discovery signal of the master UE, so that the master UE sends the discovery signal and the communication identifier when receiving the synchronization identifier, and the slave UE receives the master UE when receiving the synchronization identifier included in the measurement configuration. The discovery signal and communication identification sent by the UE, and measure RSRP or CQI or path loss according to the synchronization signal and/or discovery signal, add the communication identification of the primary UE and other data obtained by measurement to the measurement report and send it to the eNB, and the eNB will When it is clear that the distance between the master UE and the slave UE is relatively short and the signal quality is good, it is determined that the master UE and the slave UE can use the D2D communication mode to transmit data on wireless resources of the unlicensed spectrum.

After the master UE determines that the unlicensed spectrum is available and the D2D communication mode can be used to transmit data between the master UE and the slave UE, it can allocate the first radio resource of the unlicensed spectrum to the slave UE.

The signaling generation module 120 is configured to generate control signaling corresponding to the UE according to the first radio resource allocated by the resource allocation module 110, where the control signaling carries indication information for indicating the first radio resource; in order to make it clear from the UE For the first radio resource of the unlicensed spectrum allocated by the slave UE, the master UE needs to obtain indication information of the first radio resource, and add the indication information to the control signaling corresponding to the slave UE and send it to the slave UE. Wherein, the indication information is used to indicate in which time slot and from which frequency region the UE sends or receives data. In the present invention, a time slot refers to a transmission time interval ΤΉ, that is, a scheduling time unit. In LTE, 1 ΤΉ corresponds to a subframe, occupies 1 ms of time, and includes two time slots.

Since the slave UE can only perform a receiving operation or a sending operation at the same time when data is transmitted in the D2D communication mode, the master UE also needs to indicate the operation type of the slave UE in the control signaling. For example, when the master UE sends data and receives data from the slave UE, the control signaling corresponding to the slave UE is used to instruct the slave UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the master UE to send data in the first type of time slot, the slave UE to receive data in the first type of time slot, and the master UE to receive data in the second type of time slot According to the data, the slave UE sends data in the second type of time slot, wherein the first type of time slot and the second type of time slot are different, and they together form all or part of the time slots, then the master UE and the slave UE transmit data according to the preconfigured time slots. To send and receive data at the slot position, the master UE does not need to indicate the operation type of the slave UE through control signaling.

The signaling sending module 130 is configured to send the control signaling generated by the signaling generating module 120 to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information.

After the master UE sends the control signaling to the slave UE, the slave UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

Optionally, the signaling sending module 130 includes:

The first sending unit 131 is configured to send control signaling to the UE through the second radio resource of the authorized spectrum configured by the eNB for the UE; or,

In order to ensure that the slave UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the master UE can send the control signaling to the slave UE through the second radio resource of the authorized spectrum. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the master UE can send control signaling to the slave UE through the PDCCH or EPDCCH or PUCCH on the PCell.

The second sending unit 132 is configured to send control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is eNB in eNB for UE and send on the configured second radio resource of the licensed frequency spectrum.

In order to further avoid or reduce the occupation of the second radio resource by the master UE, so as to save resources on the licensed spectrum, the master UE may also send a third radio resource allocated for the slave UE to the slave UE when it detects that the unlicensed spectrum is in an available state. The UE sends control signaling corresponding to the slave UE. At this time, in order for the master UE to specify which time slot to send the control signaling from which frequency region and the slave UE to specify which time slot to receive the control signaling from which frequency region, the eNB needs to pre-select the second slot of the licensed spectrum. Send control signaling indication information corresponding to the master UE to the master UE on the radio resource, and send control signaling indication information to the slave UE on the second radio resource of the authorized spectrum, and the control signaling indication information corresponding to the master UE is used for Indicating which time slot the master UE receives the control signaling from which frequency region, and the control signaling indication information corresponding to the slave UE is used to indicate which time slot the slave UE receives control signaling from which frequency region; or,

The eNB can pre-configure the time slots and resources for the main UE to send control signaling and the time slots and resources for receiving control signaling from the UE, and the main UE determines which time slot and which frequency region to send the control signaling according to the pre-configuration , the UE determines which frequency zone to use in which time slot according to pre-configuration The domain receives control signaling. Wherein, the first radio resource is used to transmit data on the unlicensed spectrum, and the third radio resource is used to transmit control signaling on the unlicensed spectrum.

Optionally, the second sending unit 132 includes:

The second sending subunit 1322 is configured to, when the target device is the master UE sending the control signaling, determine that the UE receiving the control signaling is the slave UE, receive the control signaling indication information sent by the eNB on the second radio resource, and then Send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE receives the control signaling on the third radio resource determined by the control signaling indication information.

Specifically, the eNB may pre-allocate a third radio resource for sending control signaling to the master UE and at least one slave UE on the unlicensed spectrum, and add indication information for indicating the third radio resource to the Among the control signaling indication information and the control signaling indication information corresponding to the slave UE, the control signaling indication information corresponding to the master UE is sent to the master UE through the second radio resource, and the control signaling indication information corresponding to the slave UE is sent to the slave UE through the second radio resource. The control signaling indication information corresponding to the UE, the master UE sends the control signaling corresponding to the slave UE to each slave UE on the third radio resource indicated by the control signaling indication information, and each slave UE transmits the control signaling corresponding to the slave UE according to the received control signal The command indication information determines a third radio resource for receiving the control signaling, and receives the control signaling on the determined third radio resource.

Optionally, the device also includes:

A signal detection module, configured to detect the signal quality of the unlicensed spectrum at predetermined intervals;

The first communication module is configured to instruct the UE to use the D2D communication mode to implement data transmission when the signal detection result of the signal detection module is that the signal quality of the unlicensed spectrum meets the preset condition;

The second communication module is used to instruct the UE to use the cell communication mode to implement data transmission when the signal detection result of the signal detection module is that the signal quality of the unlicensed spectrum does not meet the preset condition. The cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the master UE and at least one slave UE can use the D2D communication mode to transmit data on the first radio resource not only depends on whether the unlicensed spectrum resource is available, but also depends on the signal quality of the unlicensed spectrum, therefore, in order to avoid unlicensed The poor signal quality of the spectrum leads to the problem that the communication efficiency between the master UE and at least one slave UE is not high. The eNB can detect the signal quality of the unlicensed spectrum every predetermined time or instruct the master UE or the slave UE to detect the unlicensed spectrum every predetermined time. Signal quality of licensed spectrum.

If the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, the main UE determines to continue to use the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the main UE determines to use cell communication Data transmission mode, that is, the master UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the slave UE through the second radio resource; Or the master UE sends the data to the eNB through the second radio resource, and the eNB further sends the data to the core network and the application server, and the application server and the core network forward the data to the slave UE through the eNB or other eNBs, so as to realize that the master UE and at least A data transfer between UEs.

It should be added that when the master UE and at least one slave UE are using the cell communication mode for data transmission, the eNB or the master UE or the slave UE can also detect the signal quality of the unlicensed spectrum at predetermined intervals, and the detection result is When the signal quality of the unlicensed spectrum meets the preset conditions, instruct the master UE and at least one slave UE to use the D2D communication mode to realize data transmission; when the detection result is that the signal instruction of the unlicensed spectrum does not meet the preset conditions, instruct the master UE and at least A slave UE continues to use the cell communication mode to implement data transmission.

Wherein, the preset condition may include at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum wireless condition lower than the threshold is less than or equal to the second threshold. Of course, the preset conditions may also be modified, and this embodiment does not limit the preset conditions.

Optionally, if the target device is the main UE and the D2D communication mode is broadcast or multicast, the device further includes:

The data dissemination module 140 is configured to send data to at least one slave UE on the first radio resource in a broadcast or multicast manner after the signaling sending module 130 sends the control signaling to the UE;

The data sending module 150 is configured to, if there is a slave UE that has not received the data propagated by the data spreading module 140, send data to the slave UE again on the second radio resource of the licensed spectrum.

In this embodiment, when there is one slave UE, the master UE can send data to the slave UE on the first radio resource in a unicast manner, so as to implement data transmission in the D2D communication mode. Or, when there is at least one slave UE, the master UE may send data to at least one slave UE on the first radio resource in a broadcast or multicast manner, and the slave UE feeds back the receiving status of the data. If there is a slave UE that has not received data, the master UE determines that data cannot be sent to the slave UE through the first radio resource, and then sends data to the slave UE again through a fourth radio resource of the authorized spectrum, and the fourth radio resource is used for Transmit data on licensed spectrum. Alternatively, the master UE may also determine whether the slave UE has received data by detecting the signal quality of the unlicensed spectrum obtained. This embodiment does not limit the determination method for the slave UE that has not received data.

It needs to be added that the manner in which the master UE sends data to the slave UE is determined by the control signaling. For example, if the indication information of the control signaling includes C-RNTI (Cell Radio Network Temporary Identifier, cell-radio network temporary identifier) or D2D-RNTI (D2D Radio Network Temporary Identifier, D2D-radio network temporary identifier) of a single UE ), then instruct the master UE to send data to the slave UE on the first radio resource in unicast mode; if the control signaling indicates The information includes Group RNTI (Group Radio Network Temporary Identifier, Group Radio Network Temporary Identifier), which instructs the master UE to send data to the slave UE on the first radio resource by broadcast or multicast.

Further, the eNB may send the control signaling indication information corresponding to the master UE to the master UE and send the control signaling indication information corresponding to the slave UE to at least one slave UE through broadcast or multicast, and the master UE transmits the control signaling indication information corresponding to the slave UE through broadcast or multicast In a manner, the control signaling corresponding to the secondary UE is sent to at least one secondary UE.

Optionally, the resource allocation module 110 includes:

The second allocating unit 112 is configured to receive an unlicensed spectrum resource pool allocated by the eNB if the target device is a master UE and there is no slave UE served by other eNBs in the slave UE, and the unlicensed spectrum resource pool includes available state For the unlicensed spectrum, the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource.

If each slave UE that uses the D2D communication mode for data transmission is served by the eNB, the master UE can directly allocate the first radio resource of the unlicensed spectrum to each slave UE. Specifically, the eNB may determine that the unlicensed spectrum in the available state is available. For example, the eNB determines that the unlicensed spectrum in the frequency region of 5170-5190 MHz is in the available state; the eNB then determines the unlicensed spectrum resource pool in the available unlicensed spectrum, Allocate the determined unlicensed spectrum resource pool to the main UE, for example, the unlicensed spectrum resource pool is a wireless resource with a frequency area of 5170-5175MHZ; the main UE receives the unlicensed spectrum resource pool allocated by the eNB, and allocates the determined unlicensed spectrum resource pool The first radio resource of the unlicensed spectrum selected from the resource pool is used as the allocated first radio resource. For example, the master UE selects a PRB in the frequency region of 5170-5172 MHz from 5170-5175 MHz as the first radio resource used by the UE. Frequency resources used for D2D communication may also be discontinuous, and for different main UEs of D2D communication, PRBs in different frequency regions in 5170-5190 MHz may be selected.

Optionally, the resource allocation module 110 includes:

The fourth allocating unit 114 is configured to receive an unlicensed spectrum resource pool sent by an eNB providing services to the master UE if the target device is a master UE and there is at least one slave UE served by other eNBs in the slave UEs, the unlicensed spectrum The resource pool is determined to be jointly occupied by the eNB and other eNBs after allocation negotiation, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource.

If there is at least one UE among the slave UEs that use the D2D communication mode for data transmission to be served by other eNBs, the eNB also needs to negotiate with the other eNBs when allocating the unlicensed spectrum resource pool. Among them, the eNB refers to the eNB that provides the PCell and the SCell on the unlicensed spectrum for the main UE, and its Other eNBs refer to other eNBs that at least use unlicensed spectrum, eNBs and other eNBs may be adjacent and provide different cells, for example, the first eNB and the second eNB; or, eNBs and other eNBs may provide inter-base station carrier aggregation cells, For example, primary eNB and secondary eNB.

Specifically, the eNB adds the information of the wireless resources that it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. radio resources that can be occupied, and determine the jointly occupied radio resources as an unlicensed spectrum resource pool, and then other eNBs notify the eNBs of the determined unlicensed spectrum resource pool. The eNB allocates the determined unlicensed spectrum resource pool to the primary UE, and the primary UE uses the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool as the allocated first wireless resource.

Assuming that the eNB provides services to the master UE, and other eNBs provide services to the slave UE, the eNB allocates the determined unlicensed spectrum resource pool to the master UE, and other eNBs allocate the determined unlicensed spectrum resource pool to the slave UE. Select the first radio resource from the authorized spectrum resource pool, generate control signaling corresponding to the slave UE according to the first radio resource, and send the control signaling to the slave UE, and the slave UE transmits the control signaling on the first radio resource after receiving the control signaling. The upper adopts the D2D communication mode to perform data transmission with the main UE.

It should be noted that the master UE and the slave UE that use the D2D communication mode to transmit data should be in the same discontinuous reception DRX state, for example, the master UE and the slave UE can only transmit control signaling during the active time.

Optionally, the resource allocation module 110 includes:

The fifth allocation unit 115 is configured to dynamically allocate the first wireless resource of the unlicensed spectrum to the UE for each data transmission using the D2D communication mode; or,

In this embodiment, HARQ technology can be used for data transmission between the master UE and at least one slave UE, and then the master UE can dynamically allocate the first wireless resource of the unlicensed spectrum for at least one slave UE at each new HARQ transmission, and allocate The manner is as described above and will not be repeated here.

The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum Uplink transmits HARQ feedback. For example, the PUCCH or PUSCH of the PCell is used for feedback or the PUCCH or PUSCH of the SCell is used for feedback, which is not limited in this embodiment.

When the HARQ feedback indicates that a certain new transmission data is lost, HARQ retransmission is required. The main UE can dynamically allocate the first radio resource of the unlicensed spectrum to at least two UEs at each HARQ retransmission, the allocation method is as described above, and will not be described here; or, the main UE can be at each HARQ retransmission The first radio resource allocated during the last HARQ retransmission or new HARQ transmission is used for retransmission.

The sixth allocating unit 116 is configured to allocate the first wireless resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy. Resource allocation strategy.

In this embodiment, the master UE can allocate the first wireless resource of the unlicensed spectrum to at least one slave UE according to the pre-configured semi-static allocation strategy every time the unlicensed spectrum is in the available state. Allocate a first radio resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation strategy is as described above, and will not be repeated here.

Specifically, the master UE can configure the period of the first radio resource for each slave UE through RRC signaling, and then send a semi-static allocation strategy to each slave UE through PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

It should be added that if at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs, and the master UE dynamically allocates the first radio resource or the eNB allocates the first radio resource according to a semi-static allocation strategy , the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNBs respectively use the third radio resource to send the control signaling to the master UE and the slave UE in the same time slot, and the frequency can be It is different, so that after receiving the control signaling, each slave UE transmits data from the first radio resource in the time slot determined according to the control signaling.

If at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs and the master UE allocates the first radio resource according to the semi-static allocation strategy, since the slave UE determines the data transmission according to the available time of the unlicensed spectrum time slot, instead of the control signaling, therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the master UE and the slave UE at the same subframe position in different radio frames, so that the master UE and the slave UE that use the D2D communication mode to transmit data share the first station between the eNB and other eNBs. When using the wireless resource, the first wireless resource may be used for data transmission. This embodiment does not limit the above two ways of sending the control signaling.

To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries an indication for indicating the first radio resource information; sending control signaling to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information, and can use the D2D communication mode on the first radio resource of the unlicensed spectrum that is in an available state Data transmission without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the wireless resources allocated by the eNB for UEs in the D2D communication mode are difficult to meet the growing spectrum requirements, resulting in the communication between UEs using the D2D communication mode The problem of low efficiency achieves the effect of improving the communication efficiency between UEs adopting the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. Please refer to FIG. 4, which shows a structural framework diagram of a device communication device provided by another embodiment of the present invention. The device communication device can be used in a target device, and includes: a processor 410, a transmitter 420, and a memory 440. The processor 410 is coupled to the transmitter 420, and the transmitter 420 is coupled to the memory 430.

A computer program is stored in the memory 430, and the processor 410 can perform the following operations by accessing the computer program:

The processor 410 is configured to allocate a first wireless resource of an unlicensed spectrum to the UE when the unlicensed spectrum is in an available state, where the unlicensed spectrum refers to a spectrum used by various wireless access systems for competition; according to the allocated first The radio resource generates control signaling corresponding to the UE, where the control signaling carries indication information for indicating the first radio resource;

After determining that the unlicensed spectrum is available, the target device can allocate the first radio resource of the unlicensed spectrum to the UE. For example, if the unlicensed spectrum in the frequency region 5170-5190MHZ is available, the target device can select the PRB in the 5170-5175MHz frequency region from the 5170-5190MHZ for data transmission in the D2D communication mode, and then select the PRB in the 5170-5175MHZ frequency Select the PRB in the 5170-5172MHz frequency region from the PRBs in the region as the first radio resource for the UE; or, the target device can directly select the PRB in the 5170-5172MHz frequency region from the 5170-5190MHz as the first radio resource for the UE. Radio resources, the frequency resources used for D2D communication can also be discontinuous, for different D2D communication UEs can select PRBs in different frequency regions in 5170-5190MHz, this embodiment does not limit the allocation of the first radio resource to the target device The method does not limit whether the D2D communication uses the uplink resource or the downlink resource of the cell.

The available state of the unlicensed spectrum includes at least two situations, one situation is that the unlicensed spectrum is empty Idle state, not occupied by other wireless access systems; one case is that although other wireless access systems occupy unlicensed frequency bands, but are far away from the eNB and/or UE or have low power, between the eNB and the UE or the UE Unlicensed spectrum can still be used for normal communication with UE without causing serious interference to other wireless access systems.

In order for the UE to specify the first radio resource of the unlicensed spectrum allocated to the UE, the target device needs to obtain indication information of the first radio resource, and add the indication information to the control signaling and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region. In this embodiment, a time slot refers to a transmission time interval ΤΉ, that is, a scheduling time unit. In LTE, 1 ΤΉ corresponds to a subframe, occupies 1 ms of time, and includes two time slots.

The transmitter 420 is configured to send the control signaling generated by the processor 410 to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information.

After the target device sends the control signaling to the UE, the UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode. Another embodiment of the present invention provides a device communication device. The device communication device can be used in a target device. In this embodiment, the target device is an eNB in a cellular network as an example. The eNB can be a micro base station or a small A base station or a macro base station, generally, the above-mentioned different types of base stations have different transmit powers and coverage areas. The device communication device may include: a processor 410, a transmitter 420 and a memory 440. The transmitter 420 is coupled to the processor 410, and the processor 410 is coupled to the memory 430.

A computer program is stored in the memory 430, and the processor 410 can perform the following operations by accessing the computer program:

The processor 410 is configured to allocate an unlicensed spectrum to the UE when the unlicensed spectrum is available The unlicensed spectrum refers to the spectrum used by various wireless access systems for competition; the control signaling corresponding to the UE is generated according to the allocated first radio resource, and the control signaling carries information for indicating the first Indication information of radio resources;

In this embodiment, the eNB needs to configure a carrier for each of at least two UEs. Specifically, the eNB can configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the UE. After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether at least two UEs can use the D2D communication mode for data transmission.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the UE and the UE without causing serious interference to other wireless access systems.

After determining that the unlicensed spectrum is available and at least two UEs can use the D2D communication mode to transmit data, the eNB can allocate the first radio resource of the unlicensed spectrum to the UE. In order for the UE to specify the first radio resource of the unlicensed spectrum allocated to the UE, the eNB needs to acquire the indication information of the first radio resource, and add the indication information to the control signaling corresponding to the UE and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region.

Since when data is transmitted in the D2D communication mode, the UE can only perform a receiving operation or a sending operation at the same time, therefore, the eNB also needs to indicate the operation type of the UE in the control signaling. For example, when the first UE sends data and the second UE receives data, the control signaling corresponding to the first UE is used to instruct the first UE to send data from a certain frequency region in a certain time slot, and the control signaling corresponding to the second UE The control signaling is used to instruct the second UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the first UE to send data in the first type of time slot, the second UE to receive data in the first type of time slot, and the first UE to receive data in the second type of time slot, and the second UE to send data in the second type of time slot data, wherein the first type of subframe is different from the second type of time slot, and they together form all time slots or part of time slots, then the first UE and the second UE send and receive data according to the pre-configured time slot positions, without The eNB indicates the operation type of the UE through control signaling.

The transmitter 420 is configured to send the control signaling generated by the processor 410 to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information.

After the eNB sends the control signaling to the UE, the UE can determine according to the indication information in the control signaling Determine which time slot to send or receive data from which frequency region.

Optionally, the transmitter 420 is specifically configured to send the control signaling to the UE through the second radio resource of the licensed spectrum configured by the eNB for the UE; or, send the control signaling to the UE through the third radio resource of the unlicensed spectrum, the second The three radio resources are determined by control signaling indication information or pre-configuration, and the control signaling indication information is sent by the eNB on the second radio resource of the authorized spectrum configured by the eNB for the UE.

In order to ensure that the UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the eNB may configure the second radio resource of the authorized spectrum for sending the control signaling. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the eNB can send control signaling to the UE through the PDCCH or EPDCCH on the PCell. or,

In order to further avoid or reduce the occupation of the second radio resource by the UE, so as to save resources on the licensed spectrum, the eNB may also send a message to the UE through the third radio resource allocated to the UE when it detects that the unlicensed spectrum is in an available state. Corresponding control signaling. At this time, in order for the UE to clearly receive the control signaling from which frequency region in which time slot, the eNB also needs to send control signaling indication information to the UE in advance on the second radio resource of the licensed frequency spectrum. The control signaling indication information It is used to indicate in which time slot the UE receives the control signaling from which frequency region; or, the eNB can pre-configure the time slot and resources for the UE to receive the control signaling, and the UE determines which time slot to use from which frequency region according to the pre-configuration. One frequency region receives control signaling. Wherein, the first wireless resource is used to transmit data on the unlicensed spectrum, and the third wireless resource is used to transmit control signaling on the unlicensed spectrum.

Optionally, the processor 410 is specifically configured to, when the target device is an eNB, send control signaling indication information to the UE through the second radio resource, and then send the control signaling to the UE through the third radio resource determined by the control signaling indication information command, so that the UE receives the control signaling on the third radio resource determined by the control signaling indication information.

Specifically, the eNB may pre-allocate a third radio resource for sending control signaling to at least two UEs on the unlicensed spectrum, and add the indication information used to indicate the third radio resource to the control signaling indication information, by The second radio resource sends control signaling indication information to each UE, and then sends control signaling corresponding to the UE to each UE on the third radio resource, and the UE determines to receive the UE according to the received control signaling indication information. Control the third radio resource for the signaling, and receive the control signaling on the determined third radio resource.

Optionally, the processor 410 is also configured to detect the signal quality of the unlicensed spectrum every predetermined time; if the detection result is that the signal quality of the unlicensed spectrum meets the preset condition, instruct the UE to use the D2D communication mode to implement data transmission; if The detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, then Instructing the UE to use the cell communication mode to implement data transmission, the cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the UE can use the D2D communication mode to transmit data on the first radio resource not only depends on whether the unlicensed spectrum resource is available, but also depends on the signal quality of the unlicensed spectrum, therefore, in order to avoid poor signal quality of the unlicensed spectrum For the problem of low communication efficiency between UEs, the eNB may detect the signal quality of the unlicensed spectrum every predetermined time or instruct the UE to detect the signal quality of the unlicensed spectrum every predetermined time.

If the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, the eNB determines to continue using the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the eNB determines to use the cell communication mode for transmission Data, that is, the first UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the second UE through the second radio resource; or the first UE sends the data to the eNB through the second radio resource, The eNB further sends the data to the core network and the application server, and the application server and the core network forward the data to the second UE through the eNB or other eNBs, so as to realize data transmission between UEs.

Wherein, the preset condition may include at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum wireless condition lower than the threshold is less than or equal to the second threshold. Of course, the preset conditions may also be modified, and this embodiment does not limit the preset conditions.

Optionally, the processor 410 is specifically configured to determine an available unlicensed spectrum if the target device is an eNB and there is no UE served by other eNBs in the UE, and select an unlicensed spectrum from the determined unlicensed spectrum The first wireless resource of the unlicensed spectrum is used as the allocated first wireless resource.

If at least two UEs using the D2D communication mode for data transmission are served by the eNB, the eNB may directly allocate the first radio resource of the unlicensed spectrum to the at least two UEs. Specifically, the eNB may determine the unlicensed spectrum that is in an available state. For example, the eNB determines that the unlicensed spectrum in the frequency region of 5170-5190 MHz is in an available state; The radio resource is used as the allocated first radio resource. For example, the eNB selects a PRB in the frequency region of 5170-5172 MHz from 5170-5190 MHz as the first radio resource used by the UE.

Optionally, the processor 410 is specifically configured to perform allocation negotiation with other eNBs if the target device is an eNB and there is at least one UE served by other eNBs in the UE, and use the negotiated eNB and other eNBs to occupy the non- The first radio resource of the authorized frequency spectrum is used as the allocated first radio resource.

If there is at least one UE among at least two UEs that use the D2D communication mode for data transmission If other eNBs provide services, the eNB also needs to negotiate with the other eNBs when allocating the first radio resource of the unlicensed spectrum. Specifically, the eNB adds the information of the wireless resources it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. The radio resource may be occupied, and the determined radio resource is used as the first radio resource, and the other eNB notifies the eNB of the determined first radio resource.

Optionally, the processor 410 is specifically configured to, for each data transmission using the D2D communication mode, dynamically allocate the first wireless resource of the unlicensed spectrum to the UE; or, allocate the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy The semi-static allocation strategy for the first wireless resource of the spectrum is a strategy for allocating the first wireless resource of the unlicensed spectrum each time the unlicensed spectrum is available.

In this embodiment, the HARQ technology can be used for data transmission between UEs, and the eNB can dynamically allocate the first wireless resource of the unlicensed spectrum to at least two UEs at each new HARQ transmission. The allocation method is as described above, here I won't go into details. The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum transmit HARQ feedback. For example, the PUCCH or PUSCH of the PCell is used for feedback or the PUCCH or PUSCH of the SCell is used for feedback, which is not limited in this embodiment.

In this embodiment, the eNB can allocate the first radio resources of the unlicensed spectrum to at least two UEs according to the pre-configured semi-static allocation strategy each time the unlicensed spectrum is available, without dynamically allocating each new HARQ transmission A first wireless resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation policy is as described above, and will not be repeated here. Specifically, the eNB may respectively configure the period of the first radio resource for each UE through RRC signaling, and then send a semi-static allocation strategy to each UE through the PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

It should be added that if at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB, and the eNB dynamically allocates the first radio resource or the eNB allocates the first radio resource according to a semi-static allocation strategy , the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNBs respectively use the third radio resource to send the control signaling to the UE in the same time slot, and the frequency can be different, so that each After receiving the control signaling, a UE transmits data on the first radio resource according to the time slot determined by the control signaling. If there is at least one of the at least two UEs that use the D2D communication mode for data transmission to be served by another eNB and the eNB allocates the first radio resource according to the semi-static allocation strategy, since the UE determines the data transmission according to the available time of the unlicensed spectrum The time slot is not the control signaling. Therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the first UE and the second UE at the same subframe position in different radio frames, so that the first UE and the second UE that use the D2D communication mode to transmit data are connected between the eNB and other eNBs. When the first wireless resource is jointly occupied, the first wireless resource may be used for data transmission. This embodiment does not limit the above two transmission modes of the control signaling.

To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. Another embodiment of the present invention provides a device communication device. The device communication device can be used in a master UE. In this embodiment, all UEs that are not declared to be master UEs are slave UEs, and the master UE and the slave UE can be dynamically configured. specified or via a semi-static allocation strategy. The device communication device may include: a processor 410, a transmitter 420 and a memory 440. The transmitter 420 is coupled to the processor 410, and the processor 410 is coupled to the memory 430.

A computer program is stored in the memory 430, and the processor 410 can perform the following operations by accessing the computer program:

The processor 410 is configured to allocate an unlicensed spectrum to the UE when the unlicensed spectrum is available The unlicensed spectrum refers to the spectrum used by various wireless access systems for competition; the control signaling corresponding to the UE is generated according to the allocated first radio resource, and the control signaling carries information for indicating the first Indication information of radio resources;

In this embodiment, the eNB needs to configure a carrier for the master UE and each of the at least one slave UE respectively. Specifically, the eNB may configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the master UE and at least one slave UE. After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether the D2D communication mode can be used for data transmission between the master UE and at least one slave UE.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the master UE and the slave UE without causing serious interference to other wireless access systems.

After the master UE determines that the unlicensed spectrum is available and the D2D communication mode can be used to transmit data between the master UE and the slave UE, it can allocate the first radio resource of the unlicensed spectrum to the slave UE. In order to make the slave UE specify the first radio resource of the unlicensed spectrum allocated to the slave UE, the master UE needs to obtain the indication information of the first radio resource, and add the indication information to the control signaling corresponding to the slave UE and send it to the slave UE . Wherein, the indication information is used to indicate in which time slot and from which frequency region the UE sends or receives data.

Since the slave UE can only perform a receiving operation or a sending operation at the same time when data is transmitted in the D2D communication mode, the master UE also needs to indicate the operation type of the slave UE in the control signaling. For example, when the master UE sends data and receives data from the slave UE, the control signaling corresponding to the slave UE is used to instruct the slave UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the master UE to send data in the first type of time slot, the slave UE to receive data in the first type of time slot, and the master UE to receive data in the second type of time slot, and the slave UE to send data in the second type of time slot, where the first The first type of time slot is different from the second type of time slot, they together constitute all time slots or part of time slots, then the master UE and the slave UE send and receive data according to the pre-configured time slot positions, without the need for the master UE to pass control signaling Indicates the type of operation from the UE.

The transmitter 420 is configured to send the control signaling generated by the processor 410 to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information.

After the master UE sends the control signaling to the slave UE, the slave UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling. Optionally, the transmitter 420 is specifically configured to send the control signaling to the UE through the second radio resource of the licensed spectrum configured by the eNB for the UE; or, send the control signaling to the UE through the third radio resource of the unlicensed spectrum, the second The three radio resources are determined by control signaling indication information or pre-configuration, and the control signaling indication information is sent by the eNB on the second radio resource of the authorized spectrum configured by the eNB for the UE.

In order to ensure that the slave UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the master UE can send the control signaling to the slave UE through the second radio resource of the authorized spectrum. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the master UE can send control signaling to the slave UE through the PDCCH or EPDCCH or PUCCH on the PCell. or,

In order to further avoid or reduce the occupation of the second radio resource by the master UE, so as to save resources on the licensed spectrum, the master UE may also send a third radio resource allocated for the slave UE to the slave UE when it detects that the unlicensed spectrum is in an available state. The UE sends control signaling corresponding to the slave UE. At this time, in order for the master UE to specify which time slot to send the control signaling from which frequency region and the slave UE to specify which time slot to receive the control signaling from which frequency region, the eNB needs to pre-select the second slot of the licensed spectrum. Send control signaling indication information corresponding to the master UE to the master UE on the radio resource, and send control signaling indication information to the slave UE on the second radio resource of the authorized spectrum, and the control signaling indication information corresponding to the master UE is used for Indicating which time slot the master UE receives the control signaling from which frequency region, and the control signaling indication information corresponding to the slave UE is used to indicate which time slot the slave UE receives control signaling from which frequency region; or, The eNB can pre-configure the time slots and resources for the main UE to send control signaling and the time slots and resources for receiving control signaling from the UE, and the main UE determines which time slot and which frequency region to send the control signaling according to the pre-configuration , the UE determines in which time slot and from which frequency region to receive the control signaling according to pre-configuration. Wherein, the first radio resource is used to transmit data on the unlicensed spectrum, and the third radio resource is used to transmit control signaling on the unlicensed spectrum.

Optionally, the processor 410 is specifically configured to, when the target device is the master UE sending the control signaling, determine that the UE receiving the control signaling is the slave UE, and receive the control signaling indication information sent by the eNB on the second radio resource , and then send the control signaling to the slave UE by using the third radio resource determined by the control signaling indication information, so that the slave UE receives the control signaling on the third radio resource determined by the control signaling indication information.

Specifically, the eNB may pre-allocate a third radio resource for sending control signaling to the master UE and at least one slave UE on the unlicensed spectrum, and add indication information for indicating the third radio resource to the Among the control signaling indication information and the control signaling indication information corresponding to the slave UE, the control signaling indication information corresponding to the master UE is sent to the master UE through the second radio resource, and the control signaling indication information corresponding to the slave UE is sent to the slave UE through the second radio resource. The control signaling indication information corresponding to the UE, the primary UE in the control signal sending control signaling corresponding to the secondary UE to each secondary UE on the third radio resource indicated by the command indication information, and each secondary UE determines the third radio resource for receiving the control signaling according to the received control signaling indication information, And receive control signaling on the determined third radio resource.

Optionally, the processor 410 is also configured to detect the signal quality of the unlicensed spectrum every predetermined time; if the detection result is that the signal quality of the unlicensed spectrum meets the preset condition, instruct the UE to use the D2D communication mode to implement data transmission; if If the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, and the cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the master UE and at least one slave UE can use the D2D communication mode to transmit data on the first radio resource not only depends on whether the unlicensed spectrum resource is available, but also depends on the signal quality of the unlicensed spectrum, therefore, in order to avoid unlicensed The poor signal quality of the spectrum leads to the problem that the communication efficiency between the master UE and at least one slave UE is not high. The eNB can detect the signal quality of the unlicensed spectrum every predetermined time or instruct the master UE or the slave UE to detect the unlicensed spectrum every predetermined time. Signal quality of licensed spectrum.

If the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, the main UE determines to continue to use the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the main UE determines to use cell communication Data transmission mode, that is, the master UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the slave UE through the second radio resource; or the master UE sends data to the eNB through the second radio resource, and the eNB The data is further sent to the core network and the application server, and then forwarded by the application server and the core network to the slave UE through the eNB or other eNBs, so as to realize data transmission between the master UE and at least one slave UE.

Wherein, the preset condition may include at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum wireless condition lower than the threshold is less than or equal to the second threshold. Of course, the preset conditions may also be modified, and this embodiment does not limit the preset conditions.

Optionally, if the target device is the master UE and the D2D communication mode is broadcast or multicast, the transmitter 420 is further configured to broadcast or multicast on the first radio resource to the UE after sending the control signaling to the UE. At least one secondary UE sends data; if there is a secondary UE that has not received data, then send data to the secondary UE again on the second radio resource of the authorized spectrum.

In this embodiment, when there is one slave UE, the master UE can send data to the slave UE on the first radio resource in a unicast manner, so as to implement data transmission in the D2D communication mode. Or, when there is at least one slave UE, the master UE may send data to at least one slave UE on the first radio resource in a broadcast or multicast manner, and the slave UE feeds back the receiving status of the data. If there is a slave that has not received data UE, then the master UE determines that it cannot send data to the slave UE through the first radio resource, and then sends data to the slave UE again through the fourth radio resource of the authorized spectrum, and the fourth radio resource is used to transmit data on the authorized spectrum. Alternatively, the master UE may also determine whether the slave UE has received data by detecting the signal quality of the unlicensed spectrum obtained. This embodiment does not limit the determination method for the slave UE that has not received data.

It needs to be added that the manner in which the master UE sends data to the slave UE is determined by the control signaling. For example, if the indication information of the control signaling includes the C-RNTI or D2D-RNTI of a single slave UE, then instruct the master UE to send data to the slave UE on the first radio resource in a unicast manner; if the indication of the control signaling If the information includes the Group RNTI, it instructs the master UE to send data to the slave UE on the first radio resource in a broadcast or multicast manner.

Further, the eNB may send the control signaling indication information corresponding to the master UE to the master UE and send the control signaling indication information corresponding to the slave UE to at least one slave UE through broadcast or multicast, and the master UE transmits the control signaling indication information corresponding to the slave UE through broadcast or multicast In a manner, the control signaling corresponding to the secondary UE is sent to at least one secondary UE.

Optionally, the processor 410 is specifically configured to receive an unlicensed spectrum resource pool allocated by the eNB if the target device is the master UE and there is no slave UE served by other eNBs in the slave UEs, the unlicensed spectrum resource pool includes For the unlicensed spectrum in the available state, the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource.

If each slave UE that uses the D2D communication mode for data transmission is served by the eNB, the master UE can directly allocate the first radio resource of the unlicensed spectrum to each slave UE. Specifically, the eNB may determine that the unlicensed spectrum in the available state is available. For example, the eNB determines that the unlicensed spectrum in the frequency region of 5170-5190 MHz is in the available state; the eNB then determines the unlicensed spectrum resource pool in the available unlicensed spectrum, Allocate the determined unlicensed spectrum resource pool to the main UE, for example, the unlicensed spectrum resource pool is a wireless resource with a frequency area of 5170-5175MHZ; the main UE receives the unlicensed spectrum resource pool allocated by the eNB, and allocates the determined unlicensed spectrum resource pool The first radio resource of the unlicensed spectrum selected from the resource pool is used as the allocated first radio resource. For example, the master UE selects a PRB in the frequency region of 5170-5172 MHz from 5170-5175 MHz as the first radio resource used by the UE. Frequency resources used for D2D communication may also be discontinuous, and for different main UEs of D2D communication, PRBs in different frequency regions in 5170-5190 MHz may be selected.

Optionally, the processor 410 is specifically configured to receive the unlicensed spectrum resource pool sent by the eNB providing the service to the master UE if the target device is the master UE and there is at least one slave UE served by other eNBs in the slave UEs, The unlicensed spectrum resource pool is determined to be jointly occupied by the eNB and other eNBs after allocation and negotiation, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as is the allocated first radio resource.

If there is at least one UE among the slave UEs that use the D2D communication mode for data transmission to be served by other eNBs, the eNB also needs to negotiate with the other eNBs when allocating the unlicensed spectrum resource pool. Specifically, the eNB adds the information of the wireless resources that it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. radio resources that can be occupied, and determine the jointly occupied radio resources as an unlicensed spectrum resource pool, and then other eNBs notify the eNBs of the determined unlicensed spectrum resource pool. The eNB allocates the determined unlicensed spectrum resource pool to the primary UE, and the primary UE uses the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool as the allocated first wireless resource.

Optionally, the processor 410 is specifically configured to, for each data transmission using the D2D communication mode, dynamically allocate the first wireless resource of the unlicensed spectrum to the UE; or, allocate the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy The semi-static allocation strategy for the first wireless resource of the spectrum is a strategy for allocating the first wireless resource of the unlicensed spectrum each time the unlicensed spectrum is available.

In this embodiment, HARQ technology can be used for data transmission between the master UE and at least one slave UE, and then the master UE can dynamically allocate the first wireless resource of the unlicensed spectrum for at least one slave UE at each new HARQ transmission, and allocate The manner is as described above and will not be repeated here. The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum Uplink transmits HARQ feedback. For example, the PUCCH or PUSCH of the PCell is used for feedback or the PUCCH or PUSCH of the SCell is used for feedback, which is not limited in this embodiment.

In this embodiment, the master UE can allocate the first wireless resource of the unlicensed spectrum to at least one slave UE according to the pre-configured semi-static allocation strategy every time the unlicensed spectrum is in the available state. Allocate a first radio resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation strategy is as described above, and will not be repeated here. Specifically, the master UE can configure the period of the first radio resource for each slave UE through RRC signaling, and then send a semi-static allocation strategy to each slave UE through PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

It should be added that if at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs, and the master UE dynamically allocates the first radio resource or eNB The first radio resource is allocated according to the semi-static allocation strategy, then the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNB use the third radio resource to send the control signal to the master UE and the slave UE respectively The timing slots are the same, and the frequencies may be different, so that after each slave UE receives the control signaling, it transmits data on the first radio resource according to the slot determined by the control signaling.

If at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs and the master UE allocates the first radio resource according to the semi-static allocation strategy, since the slave UE determines the data transmission according to the available time of the unlicensed spectrum time slot, instead of the control signaling, therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the master UE and the slave UE at the same subframe position in different radio frames, so that the master UE and the slave UE that use the D2D communication mode to transmit data share the first station between the eNB and other eNBs. When using the wireless resource, the first wireless resource may be used for data transmission. This embodiment does not limit the above two ways of sending the control signaling.

To sum up, the device communication device provided by the embodiment of the present invention allocates the first radio resource of the unlicensed spectrum to the UE when the unlicensed spectrum is in an available state; generates a control corresponding to the UE according to the allocated first radio resource signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. Please refer to FIG. 5, which shows a method flowchart of a device communication method provided by an embodiment of the present invention. The device communication method can be used in the target device, including:

Step 501, when the unlicensed spectrum is available, allocate the first part of the unlicensed spectrum to the UE Wireless resources, the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the UE and the UE without causing serious interference to other wireless access systems.

After determining that the unlicensed spectrum is available, the target device can allocate the first radio resource of the unlicensed spectrum to the UE. For example, if the unlicensed spectrum in the frequency region 5170-5190MHZ is available, the target device can select the PRB in the 5170-5175MHz frequency region from the 5170-5190MHZ for data transmission in the D2D communication mode, and then select the PRB in the 5170-5175MHZ frequency Select the PRB in the 5170-5172MHz frequency region from the PRBs in the region as the first radio resource for the UE; or, the target device can directly select the PRB in the 5170-5172MHz frequency region from the 5170-5190MHz as the first radio resource for the UE. Radio resources, the frequency resources used for D2D communication can also be discontinuous, for different D2D communication UEs can select PRBs in different frequency regions in 5170-5190MHz, this embodiment does not limit the allocation of the first radio resource to the target device The method does not limit whether the D2D communication uses the uplink resource or the downlink resource of the cell.

Step 502: Generate control signaling corresponding to the UE according to the allocated first radio resource, where the control signaling carries indication information for indicating the first radio resource;

In order for the UE to specify the first radio resource of the unlicensed spectrum allocated to the UE, the target device needs to obtain indication information of the first radio resource, and add the indication information to the control signaling and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region. In the present invention, a time slot refers to a transmission time interval ΤΉ, that is, a scheduling time unit. In LTE, one TTI corresponds to one subframe, occupies 1 ms of time, and includes two time slots.

Step 503, sending control signaling to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information.

After the target device sends the control signaling to the UE, the UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

To sum up, in the device communication method provided by the embodiment of the present invention, when the unlicensed spectrum is in an available state, the first wireless resource of the unlicensed spectrum is allocated to the UE; signaling, where the control signaling carries indication information used to indicate the first radio resource; sending the control signaling to the UE, so that the UE operates on the first radio resource determined according to the indication information The D2D communication mode is used to realize data transmission, and the D2D communication mode can be used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additionally allocating wireless resources on the licensed spectrum for the UE, which solves the problem of eNB being D2D The wireless resources allocated by the UEs in the communication mode are difficult to meet the ever-increasing spectrum demand, which leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode . Please refer to FIG. 6, which shows a method flowchart of a device communication method provided by another embodiment of the present invention. The device communication method can be used in the target device. In this embodiment, the target device is an eNB in a cellular network as an example. The eNB can be a micro base station, a small base station, or a macro base station. Usually, the different types of base station transmit power and Coverage varies. Device communication methods, including:

Step 601, when the unlicensed spectrum is available, allocate the first wireless resource of the unlicensed spectrum to the UE, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

In this embodiment, the eNB needs to configure a carrier for each of at least two UEs. Specifically, the eNB can configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the UE. After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether at least two UEs can use the D2D communication mode for data transmission. Taking at least two UEs as the first UE and the second UE as an example, the eNB can send the measurement configuration to the first UE and the second UE respectively, and the measurement configuration can use the same message or a different message from the configured carrier sent to the first UE and the second UE. The first UE and the second UE respectively send the measured measurement results to the eNB according to the measurement configuration, and the eNB determines whether the unlicensed spectrum is available and whether at least two UEs can use the D2D communication mode for data transmission according to the measurement results.

After determining that the unlicensed spectrum is available and at least two UEs can use the D2D communication mode to transmit data, the eNB can allocate the first radio resource of the unlicensed spectrum to the UE.

First, allocate the first wireless resource of the unlicensed spectrum to the UE, including:

If the target device is an eNB and there is no UE that is served by other eNBs among the UEs, determine an available unlicensed spectrum, and use the first wireless resource of the unlicensed spectrum selected from the determined unlicensed spectrum as the allocated A first wireless resource.

If at least two UEs using the D2D communication mode for data transmission are served by the eNB, the eNB may directly allocate the first radio resource of the unlicensed spectrum to the at least two UEs. Specifically, the eNB can determine the unlicensed spectrum resources in the available state, for example, the eNB determines that the frequency region is The unlicensed spectrum of 5170-5190MHz is available; the eNB uses the first wireless resource of the unlicensed spectrum selected from the determined unlicensed spectrum as the first wireless resource allocated, for example, the eNB selects 5170 from 5170-5190MHz - PRBs in the 5172 MHz frequency region are used as the first radio resource for the UE.

Second, allocate the first wireless resource of the unlicensed spectrum to the UE, including:

If the target device is an eNB and there is at least one UE served by other eNBs among the UEs, carry out allocation negotiation with other eNBs, and use the first radio resource of the unlicensed spectrum jointly occupied by the eNB and other eNBs obtained through negotiation as the allocated first radio resource A wireless resource.

If at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB, the eNB also needs to negotiate with the other eNB when allocating the first radio resource of the unlicensed spectrum. Among them, the eNB serving as the target device refers to the eNB that provides PCell and SCell on the unlicensed spectrum for the UE, and other eNBs refer to other eNBs that use at least unlicensed spectrum. The eNB and other eNBs can be adjacent and provide different cells. For example, the first The eNB and the second eNB; or, the eNB and other eNBs may provide a cell for inter-eNB carrier aggregation, for example, the primary eNB and the secondary eNB.

Specifically, the eNB adds the information of the wireless resources that it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. The radio resource may be occupied, and the determined radio resource is used as the first radio resource, and the other eNB notifies the eNB of the determined first radio resource.

Assuming that the eNB provides services to the first UE, and other eNBs provide services to the second UE, the eNB sends control signaling to the first UE according to the determined third radio resources, and at the same time, other eNBs send control signaling to the second UE according to the determined third radio resources. The UE sends the control signaling, and after receiving the control signaling, the first UE and the second UE perform data transmission in the D2D communication mode on the first radio resource.

It should be noted that the UEs that use the D2D communication mode to transmit data should be in the same discontinuous reception DRX state, for example, the first UE and the second UE can only receive control signaling during the active time.

Third, allocate the first radio resource of the unlicensed spectrum to the UE, including:

For each data transmission using the D2D communication mode, dynamically allocate the first radio resource of the unlicensed spectrum to the UE; or,

The first radio resource of the unlicensed spectrum is allocated to the UE according to a pre-configured semi-static allocation strategy. The semi-static allocation strategy is an allocation strategy for the first radio resource of the unlicensed spectrum each time the unlicensed spectrum is in an available state. In this embodiment, the HARQ technology can be used for data transmission between UEs, and the eNB can dynamically allocate the first wireless resource of the unlicensed spectrum to at least two UEs at each new HARQ transmission. The allocation method is as described above, here I won't go into details. The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum transmit HARQ feedback. For example, the PUCCH or PUSCH of the PCell is used for feedback or the PUCCH or PUSCH of the SCell is used for feedback, which is not limited in this embodiment.

When the HARQ feedback indicates that a certain new transmission data is lost, HARQ retransmission is required. The eNB can dynamically allocate the first wireless resource of the unlicensed spectrum for at least two UEs at each HARQ retransmission, the allocation method is as described above, and will not be described here; or, the eNB can use the last time at each HARQ retransmission The first radio resource allocated during HARQ retransmission or HARQ new transmission.

In this embodiment, the eNB can allocate the first radio resources of the unlicensed spectrum to at least two UEs according to the pre-configured semi-static allocation strategy each time the unlicensed spectrum is available, without dynamically allocating each new HARQ transmission A first wireless resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation policy is as described above, and will not be repeated here. Specifically, the eNB may respectively configure the period of the first radio resource for each UE through RRC signaling, and then send a semi-static allocation strategy to each UE through the PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

Step 602: Generate control signaling corresponding to the UE according to the allocated first radio resource, where the control signaling carries indication information for indicating the first radio resource;

In order for the UE to specify the first radio resource of the unlicensed spectrum allocated to the UE, the eNB needs to obtain the indication information of the first radio resource, and add the indication information to the control signaling corresponding to the UE and send it to the UE. Wherein, the indication information is used to indicate in which time slot the UE sends or receives data from which frequency region.

Since when data is transmitted in the D2D communication mode, the UE can only perform a receiving operation or a sending operation at the same time, therefore, the eNB also needs to indicate the operation type of the UE in the control signaling. For example, when the first UE sends data and the second UE receives data, the control signaling corresponding to the first UE is used to instruct the first UE to send data from a certain frequency region in a certain time slot, and the control signaling corresponding to the second UE The control signaling is used to instruct the second UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the first UE to send data in the first type of time slot, the second UE to receive data in the first type of time slot, and the first UE Receive data in the second type of time slot, and the second UE sends data in the second type of time slot, wherein the first type of time slot and the second type of time slot are different, and they together form all time slots or part of time slots, then the first UE and the second UE to send and receive data according to the preconfigured time slot position, and the eNB does not need to indicate the operation type of the UE through control signaling.

Step 603, sending control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information.

After the eNB sends the control signaling to the UE, the UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

Wherein, sending the control signaling to the UE includes:

Send the control signaling to the UE through the second radio resource of the licensed spectrum configured by the eNB for the UE; or, send the control signaling to the UE through the third radio resource of the unlicensed spectrum, and the third radio resource is indicated by the control signaling or pre-set The configuration determines that the control signaling indication information is sent by the eNB on the second radio resource of the licensed spectrum configured by the eNB for the UE.

In order to ensure that the UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the eNB may configure the second radio resource of the authorized spectrum for sending the control signaling. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the eNB can send control signaling to the UE through the PDCCH or EPDCCH on the PCell. or,

In order to further avoid or reduce the occupation of the second radio resource by the UE, so as to save resources on the licensed spectrum, the eNB may also send a message to the UE through the third radio resource allocated to the UE when it detects that the unlicensed spectrum is in an available state. Corresponding control signaling. At this time, in order for the UE to clearly receive the control signaling from which frequency region in which time slot, the eNB also needs to send control signaling indication information to the UE in advance on the second radio resource of the licensed frequency spectrum. The control signaling indication information It is used to indicate in which time slot the UE receives the control signaling from which frequency region; or, the eNB can pre-configure the time slot and resources for the UE to receive the control signaling, and the UE determines which time slot to use from which frequency region according to the pre-configuration. One frequency region receives control signaling. Wherein, the first wireless resource is used to transmit data on the unlicensed spectrum, and the third wireless resource is used to transmit control signaling on the unlicensed spectrum.

Specifically, sending the control signaling to the UE through the first radio resource includes:

When the target device is an eNB, send the control signaling indication information to the UE through the second radio resource, and then send the control signaling to the UE through the third radio resource determined by the control signaling indication information, so that the UE will Receive control signaling on the third radio resource.

Specifically, the eNB may pre-allocate at least two UEs on the unlicensed spectrum to send control signaling the third radio resource, and add the indication information for indicating the third radio resource to the control signaling indication information, send the control signaling indication information to each UE respectively through the second radio resource, and then in the third radio Send control signaling corresponding to the UE to each UE on the resource, and the UE determines a third radio resource for receiving the control signaling according to the received control signaling indication information, and receives the control signaling on the determined third radio resource make.

It should be added that the method provided in this embodiment also includes:

Detecting the signal quality of the unlicensed spectrum at predetermined intervals;

If the detection result is that the signal quality of the unlicensed spectrum meets the preset condition, the UE is instructed to use the D2D communication mode to realize data transmission;

If the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission. The cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the UE can use the D2D communication mode to transmit data on the first radio resource not only depends on whether the unlicensed spectrum resource is available, but also depends on the signal quality of the unlicensed spectrum, therefore, in order to avoid poor signal quality of the unlicensed spectrum For the problem of low communication efficiency between UEs, the eNB may detect the signal quality of the unlicensed spectrum every predetermined time or instruct the UE to detect the signal quality of the unlicensed spectrum every predetermined time.

If the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, the eNB determines to continue using the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the eNB determines to use the cell communication mode for transmission Data, that is, the first UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the second UE through the second radio resource; or the first UE sends the data to the eNB through the second radio resource, The eNB further sends the data to the core network and the application server, and the application server and the core network forward the data to the second UE through the eNB or other eNBs, so as to realize data transmission between UEs. Wherein, the preset condition may include: at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum radio condition lower than the threshold is less than or equal to the second threshold. Certainly, the preset conditions may also be modified, and this embodiment does not limit the preset conditions.

It should be added that if at least one of the at least two UEs using the D2D communication mode for data transmission is served by another eNB, and the eNB dynamically allocates the first radio resource or the eNB allocates the first radio resource according to a semi-static allocation strategy , the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNBs respectively use the third radio resource to send the control signaling to the UE in the same time slot, and the frequency can be different, so that each A UE is in After receiving the control signaling, transmit data from the first radio resource in the time slot determined according to the control signaling. If there is at least one of the at least two UEs that use the D2D communication mode for data transmission to be served by another eNB and the eNB allocates the first radio resource according to the semi-static allocation strategy, since the UE determines the data transmission according to the available time of the unlicensed spectrum The time slot is not the control signaling. Therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the first UE and the second UE at the same subframe position in different radio frames, so that the first UE and the second UE that use the D2D communication mode to transmit data are connected between the eNB and other eNBs. When the first wireless resource is jointly occupied, the first wireless resource may be used for data transmission. This embodiment does not limit the above two transmission modes of the control signaling.

To sum up, in the device communication method provided by the embodiment of the present invention, when the unlicensed spectrum is in an available state, the first wireless resource of the unlicensed spectrum is allocated to the UE; signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. Please refer to FIG. 7, which shows a method flowchart of a device communication method provided by another embodiment of the present invention. This device communication method can be used in the master UE, and the UEs that are not declared as the master UE in the embodiment are all slave UEs, and the master UE and the slave UE can be specified dynamically or through a semi-static allocation strategy. Device communication methods include:

Step 701, when the unlicensed spectrum is available, allocate the first radio resource of the unlicensed spectrum to the UE, and the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition;

In this embodiment, the eNB needs to be the master UE and each of the at least one slave UE respectively Configure the carrier. Specifically, the eNB may configure the PCell in the frequency band of the licensed spectrum, configure the SCell in the frequency band of the unlicensed spectrum, and send the carrier configuration information of each cell to the master UE and at least one slave UE. After the carrier configuration is completed, the eNB needs to determine whether the unlicensed spectrum is available and whether the D2D communication mode can be used for data transmission between the master UE and at least one slave UE.

Taking the master UE and the slave UE as an example for illustration, the eNB can send the measurement configuration to the master UE and the slave UE respectively, and the measurement configuration and the configured carrier can be sent to the master UE and the slave UE using the same message or a different message. The master UE and the slave UE send the measured measurement results to the eNB respectively according to the measurement configuration, and the eNB determines whether the unlicensed spectrum is available and whether the D2D communication mode can be used for data transmission between the master UE and the slave UE according to the measurement results.

The available state of the unlicensed spectrum includes at least two situations. One situation is that the unlicensed spectrum is idle and not occupied by other wireless access systems; the other situation is that although other wireless access systems occupy the unlicensed frequency band, the distance from the eNB And/or the UE is far away or the power is low, etc., the unlicensed spectrum can still be used for normal communication between the eNB and the UE or between the master UE and the slave UE without causing serious interference to other wireless access systems.

After the master UE determines that the unlicensed spectrum is available and the D2D communication mode can be used to transmit data between the master UE and the slave UE, it can allocate the first radio resource of the unlicensed spectrum to the slave UE.

First, allocate the first wireless resource of the unlicensed spectrum to the UE, including:

If the target device is the master UE and there is no slave UE served by other eNBs among the slave UEs, receive the unlicensed spectrum resource pool allocated by the eNB, the unlicensed spectrum resource pool includes unlicensed spectrum in an available state, The first radio resource of the unlicensed spectrum selected from the spectrum resource pool is used as the allocated first radio resource.

If each slave UE that uses the D2D communication mode for data transmission is served by the eNB, the master UE can directly allocate the first radio resource of the unlicensed spectrum to each slave UE. Specifically, the eNB can determine the unlicensed spectrum resources that are available. For example, the eNB determines that the unlicensed spectrum in the frequency region of 5170-5190 MHz is available; the eNB then determines the unlicensed spectrum resource pool in the available unlicensed spectrum , allocate the determined unlicensed spectrum resource pool to the main UE, for example, the unlicensed spectrum resource pool is a wireless resource with a frequency area of 5170-5175MHZ; the main UE receives the unlicensed spectrum resource pool allocated by the eNB, and allocates the determined unlicensed spectrum resource pool The first radio resource of the unlicensed spectrum selected in the spectrum resource pool is used as the first radio resource allocated, for example, the primary UE selects a PRB in the 5170-5172MHz frequency region from 5170-5175MHz as the first radio resource used by the UE . The frequency resources used for D2D communication can also be discontinuous, for different D2D The main UE in communication can select PRBs in different frequency regions in 5170-5190MHz.

Second, allocate the first wireless resource of the unlicensed spectrum to the UE, including:

If the target device is a master UE and there is at least one slave UE that is served by other eNBs in the slave UEs, then receive the unlicensed spectrum resource pool sent by the eNB that provides services to the master UE. If it is determined to be jointly occupied after the allocation negotiation, the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource.

If there is at least one UE among the slave UEs that use the D2D communication mode for data transmission to be served by other eNBs, the eNB also needs to negotiate with the other eNBs when allocating the unlicensed spectrum resource pool. Among them, eNB refers to the eNB that provides PCell and SCell on the unlicensed spectrum for the main UE, and other eNBs refer to other eNBs that use at least unlicensed spectrum. The eNB and other eNBs can be adjacent and provide different cells. For example, the first eNB and the second eNB Two eNBs; or, the eNB and other eNBs can provide a cell for carrier aggregation between base stations, for example, a primary eNB and a secondary eNB.

Specifically, the eNB adds the information of the wireless resources that it can occupy to the negotiation information through an interface between base stations such as the X2 interface and sends it to other eNBs, and the other eNBs determine the wireless resources of the other eNBs in the wireless resources indicated by the negotiation information. radio resources that can be occupied, and determine the jointly occupied radio resources as an unlicensed spectrum resource pool, and then other eNBs notify the eNBs of the determined unlicensed spectrum resource pool. The eNB allocates the determined unlicensed spectrum resource pool to the primary UE, and the primary UE uses the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool as the allocated first wireless resource. Assuming that the eNB provides services to the master UE, and other eNBs provide services to the slave UE, the eNB allocates the determined unlicensed spectrum resource pool to the master UE, and other eNBs allocate the determined unlicensed spectrum resource pool to the slave UE. Select the first radio resource from the authorized spectrum resource pool, generate control signaling corresponding to the slave UE according to the first radio resource, and send the control signaling to the slave UE, and the slave UE transmits the control signaling on the first radio resource after receiving the control signaling. The upper adopts the D2D communication mode to perform data transmission with the main UE.

It should be noted that the master UE and the slave UE that use the D2D communication mode to transmit data should be in the same discontinuous reception DRX state, for example, the master UE and the slave UE can only transmit control signaling during the active time.

Third, allocate the first radio resource of the unlicensed spectrum to the UE, including:

For each data transmission using the D2D communication mode, dynamically allocate the first radio resource of the unlicensed spectrum to the UE; or,

Allocating the first wireless resource of the unlicensed spectrum to the UE according to the pre-configured semi-static allocation strategy, the semi-static allocation strategy is the first unlicensed resource of the unlicensed spectrum each time Strategies for allocating resources.

In this embodiment, HARQ technology can be used for data transmission between the master UE and at least one slave UE, and then the master UE can dynamically allocate the first wireless resource of the unlicensed spectrum for at least one slave UE at each new HARQ transmission, and allocate The manner is as described above and will not be repeated here. The HARQ feedback for data can be fed back through the fifth radio resource of the unlicensed spectrum or the sixth radio resource of the licensed spectrum, the fifth radio resource is used to transmit the HARQ feedback on the unlicensed spectrum, and the sixth radio resource is used to transmit the HARQ feedback on the licensed spectrum Uplink transmits HARQ feedback. For example, the PUCCH or PUSCH of the PCell is used for feedback or the PUCCH or PUSCH of the SCell is used for feedback, which is not limited in this embodiment.

When the HARQ feedback indicates that a certain new transmission data is lost, HARQ retransmission is required. The primary UE can dynamically allocate the first wireless resource of the unlicensed spectrum to at least two UEs at each HARQ retransmission, the allocation method is as described above, and will not be described here; or, the primary UE can be used at each HARQ retransmission The first radio resource allocated during the last HARQ retransmission or new HARQ transmission.

In this embodiment, the master UE can allocate the first wireless resource of the unlicensed spectrum to at least one slave UE according to the pre-configured semi-static allocation strategy every time the unlicensed spectrum is in the available state. Allocate a first radio resource. Wherein, the allocation manner of allocating the first wireless resource according to the semi-static allocation strategy is as described above, and will not be repeated here. Specifically, the master UE can configure the period of the first radio resource for each slave UE through RRC signaling, and then send a semi-static allocation strategy to each slave UE through PDCCH or EPDCCH. Since the data transmission on the SCell is only performed when the unlicensed spectrum is available, the cycle only takes effect when the unlicensed spectrum is available.

Step 702: Generate control signaling corresponding to the UE according to the allocated first radio resource, where the control signaling carries indication information for indicating the first radio resource;

In order to make the slave UE specify the first radio resource of the unlicensed spectrum allocated to the slave UE, the master UE needs to obtain the indication information of the first radio resource, and add the indication information to the control signaling corresponding to the slave UE and send it to the slave UE . Wherein, the indication information is used to indicate in which time slot and from which frequency region the UE sends or receives data. In the present invention, a time slot refers to a transmission time interval ΤΉ, that is, a scheduling time unit. In LTE, 1 ΤΉ corresponds to a subframe, occupies 1 ms of time, and includes two time slots.

Since the slave UE can only perform a receiving operation or a sending operation at the same time when data is transmitted in the D2D communication mode, the master UE also needs to indicate the operation type of the slave UE in the control signaling. For example, when the master UE sends data and receives data from the slave UE, the control signaling corresponding to the slave UE is used to instruct the slave UE to receive data from a certain frequency region in a certain time slot. Or pre-configure the master UE in the first category The slave UE receives data in the first type of time slot, and the master UE receives data in the second type of time slot, and the slave UE sends data in the second type of time slot, wherein the first type of time slot and the second type of time slot Differently, they jointly form all time slots or part of time slots, then the master UE and the slave UE send and receive data according to the preconfigured time slot positions, and the master UE does not need to indicate the operation type of the slave UE through control signaling.

Step 703, sending control signaling to the UE, so that the UE uses the D2D communication mode to implement data transmission on the first radio resource determined according to the indication information;

After the master UE sends the control signaling to the slave UE, the slave UE can determine which time slot to send or receive data from which frequency region according to the indication information in the control signaling.

Wherein, sending the control signaling to the UE includes:

Send the control signaling to the UE through the second radio resource of the licensed spectrum configured by the eNB for the UE; or, send the control signaling to the UE through the third radio resource of the unlicensed spectrum, and the third radio resource is indicated by the control signaling or pre-set The configuration determines that the control signaling indication information is sent by the eNB on the second radio resource of the licensed spectrum configured by the eNB for the UE.

In order to ensure that the slave UE can correctly receive the control signaling, so as to improve the reliability of transmitting the control signaling, the master UE can send the control signaling to the slave UE through the second radio resource of the authorized spectrum. In this embodiment, since the PCell is configured in the frequency band of the licensed spectrum, the master UE can send control signaling to the slave UE through the PDCCH or EPDCCH or PUCCH on the PCell. or,

In order to further avoid or reduce the occupation of the second radio resources by the main UE, so as to save resources on the licensed spectrum, the main UE may also detect that the unlicensed spectrum is available and no other wireless access system is occupying the unlicensed spectrum. resources, the control signaling corresponding to the secondary UE is sent to the secondary UE through the third radio resource allocated for the secondary UE. At this time, in order for the master UE to specify which time slot to send the control signaling from which frequency region and the slave UE to specify which time slot to receive the control signaling from which frequency region, the eNB needs to pre-select the second Send control signaling indication information corresponding to the master UE to the master UE on the radio resource, and send control signaling indication information to the slave UE on the second radio resource of the authorized spectrum, and the control signaling indication information corresponding to the master UE is used for Indicating which time slot the master UE receives the control signaling from which frequency region, and the control signaling indication information corresponding to the slave UE is used to indicate which time slot the slave UE receives control signaling from which frequency region; or, The eNB can pre-configure the time slots and resources for the main UE to send control signaling and the time slots and resources for receiving control signaling from the UE, and the main UE determines which time slot and which frequency region to send the control signaling according to the pre-configuration , the UE determines in which time slot to receive the control signaling from which frequency region according to pre-configuration. Among them, the first wireless resource is used to transmit data on the unlicensed spectrum, and the third wireless resource is used to transmit data on the unlicensed spectrum. Control signaling is transmitted on the right frequency spectrum.

Specifically, sending the control signaling to the UE through the first radio resource includes:

When the target device is the master UE that sends the control signaling, it is determined that the UE that receives the control signaling is the slave UE, receives the control signaling indication information sent by the eNB on the second radio resource, and then uses the control signaling indication information to determine the first The third radio resource sends the control signaling to the secondary UE, so that the secondary UE receives the control signaling on the third radio resource determined by the control signaling indication information.

Specifically, the eNB may pre-allocate a third radio resource for sending control signaling to the master UE and at least one slave UE on the unlicensed spectrum, and add indication information for indicating the third radio resource to the Among the control signaling indication information and the control signaling indication information corresponding to the slave UE, the control signaling indication information corresponding to the master UE is sent to the master UE through the second radio resource, and the control signaling indication information corresponding to the slave UE is sent to the slave UE through the second radio resource. The control signaling indication information corresponding to the UE, the master UE sends the control signaling corresponding to the slave UE to each slave UE on the third radio resource indicated by the control signaling indication information, and each slave UE transmits the control signaling corresponding to the slave UE according to the received control signal The command indication information determines a third radio resource for receiving the control signaling, and receives the control signaling on the determined third radio resource.

Step 704, if the target device is the master UE and the D2D communication mode is broadcast or multicast, send data to at least one slave UE on the first wireless resource by broadcast or multicast; if there is a slave UE that has not received the data , then send the data to the secondary UE again on the fourth radio resource of the authorized frequency spectrum.

In this embodiment, when there is one slave UE, the master UE can send data to the slave UE on the first radio resource in a unicast manner, so as to implement data transmission in the D2D communication mode. Or, when there is at least one slave UE, the master UE may send data to at least one slave UE on the first radio resource in a broadcast or multicast manner, and the slave UE feeds back the receiving status of the data. If there is a slave UE that has not received data, the master UE determines that data cannot be sent to the slave UE through the first radio resource, and then sends data to the slave UE again through the second radio resource of the authorized spectrum. Alternatively, the master UE may also determine whether the slave UE has received data by detecting the signal quality of the unlicensed spectrum. This embodiment does not limit the method of determining the slave UE that has not received data.

It needs to be added that the manner in which the master UE sends data to the slave UE is determined by the control signaling. For example, if the indication information of the control signaling includes the C-RNTI or D2D-RNTI of a single slave UE, then instruct the master UE to send data to the slave UE on the first radio resource in a unicast manner; if the indication of the control signaling If the information includes the Group RNTI, it instructs the master UE to send data to the slave UE on the first radio resource in a broadcast or multicast manner. Further, the eNB may send the control signaling indication information corresponding to the master UE to the master UE and send the control signaling indication information corresponding to the slave UE to at least one slave UE through broadcast or multicast, and the master UE transmits the control signaling indication information corresponding to the slave UE through broadcast or multicast In a manner, the control signaling corresponding to the secondary UE is sent to at least one secondary UE.

It should be added that the method provided in this embodiment also includes:

Detecting the signal quality of the unlicensed spectrum at predetermined intervals;

If the detection result is that the signal quality of the unlicensed spectrum meets the preset condition, the UE is instructed to use the D2D communication mode to realize data transmission;

If the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission. The cell communication mode refers to the UE performing data transmission through the eNB.

Since whether the master UE and at least one slave UE can use the D2D communication mode to transmit data on the first radio resource not only depends on whether the unlicensed spectrum resource is available, but also depends on the signal quality of the unlicensed spectrum, therefore, in order to avoid unlicensed The poor signal quality of the spectrum leads to the problem that the communication efficiency between the master UE and at least one slave UE is not high. The eNB can detect the signal quality of the unlicensed spectrum every predetermined time or instruct the master UE or the slave UE to detect the unlicensed spectrum every predetermined time. Signal quality of licensed spectrum.

If the detection result shows that the signal quality of the unlicensed spectrum meets the preset conditions, the main UE determines to continue to use the D2D communication mode to transmit data; if the detection result shows that the signal quality of the unlicensed spectrum does not meet the preset conditions, the main UE determines to use cell communication Data transmission mode, that is, the master UE sends data to the eNB through the second radio resource, and the eNB forwards the received data to the slave UE through the second radio resource; or the master UE sends data to the eNB through the second radio resource, and the eNB The data is further sent to the core network and the application server, and then forwarded by the application server and the core network to the slave UE through the eNB or other eNBs, so as to realize data transmission between the master UE and at least one slave UE. Wherein, the preset condition may include: at least one of: the unlicensed spectrum unavailable duration is less than or equal to the first threshold and the duration of the unlicensed spectrum wireless condition lower than the threshold is less than or equal to the second threshold. Of course, the preset conditions can also be modified, and this embodiment does not limit the preset conditions.

It should be added that if at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs, and the master UE dynamically allocates the first radio resource or the eNB allocates the first radio resource according to a semi-static allocation strategy , the control signaling needs to be sent when the eNB and other eNBs jointly occupy the first radio resource, and the eNB and other eNBs respectively use the third radio resource to send the control signaling to the master UE and the slave UE in the same time slot, and the frequency can be It is different, so that after receiving the control signaling, each slave UE transmits data from the first radio resource in the time slot determined according to the control signaling. If at least one of the slave UEs using the D2D communication mode for data transmission is served by other eNBs and the master UE allocates the first radio resource according to the semi-static allocation strategy, since the slave UE determines the data transmission according to the available time of the unlicensed spectrum time slot, instead of the control signaling, therefore, the control signaling may be sent when the eNB and other eNBs jointly occupy the first radio resource, or may not be sent when the eNB and other eNBs jointly occupy the first radio resource. For example, the eNB and other eNBs can respectively send control signaling to the master UE and the slave UE at the same subframe position in different radio frames, so that the master UE and the slave UE that use the D2D communication mode to transmit data share the first station between the eNB and other eNBs. When using the wireless resource, the first wireless resource may be used for data transmission. This embodiment does not limit the above two ways of sending the control signaling.

To sum up, in the device communication method provided by the embodiment of the present invention, when the unlicensed spectrum is in an available state, the first wireless resource of the unlicensed spectrum is allocated to the UE; signaling, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in the D2D communication mode on the first radio resource determined according to the indication information, and may be in The D2D communication mode is used for data transmission on the first wireless resource of the unlicensed spectrum in the available state, without additional allocation of wireless resources on the licensed spectrum for the UE, which solves the problem that the radio resources allocated by the eNB for the UE in the D2D communication mode are difficult to meet The ever-increasing demand for frequency spectrum leads to the problem of low communication efficiency between UEs using the D2D communication mode, and achieves the effect of improving the communication efficiency between UEs using the D2D communication mode.

In addition, when the signal quality of the unlicensed spectrum does not meet the preset condition, the UE is instructed to use the cell communication mode to implement data transmission, so that when the UE cannot directly send data to other UEs, the data can be sent to the eNB, and the eNB will send the data to the eNB. The received data is forwarded to other UEs, realizing data transmission between UEs. It should be noted that: when the device communication device provided in the above embodiment performs device communication, the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to needs. That is, the internal structure of the device communication device is divided into different functional modules to complete all or part of the functions described above. In addition, the device communication device and the device communication method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, and will not be repeated here.

The serial numbers of the above-mentioned embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can appreciate that the various illustrations described in conjunction with the embodiments disclosed herein The units and algorithm steps of the example can be realized by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by means of hardware or software depends on the functions described in the specific application of the technical solution, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and clarity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units may be only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units can be selected according to actual needs to realize the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, and various media that can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited to Therefore, any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, and all of them should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (18)

Claims 1. A device communication device, which is used in a target device, the device comprising: a resource allocation module, configured to allocate the first part of the unlicensed spectrum to a user equipment UE when the unlicensed spectrum is in an available state A wireless resource, the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition; a signaling generation module, configured to generate control signaling corresponding to the UE according to the first radio resource allocated by the resource allocation module, where the control signaling carries indication information for indicating the first radio resource ; a signaling sending module, configured to send the control signaling generated by the signaling generating module to the UE, so that the UE adopts device-to-device D2D on the first radio resource determined according to the indication information Communication mode realizes data transmission. 2. The device according to claim 1, wherein the signaling sending module includes: a first sending unit, configured to transmit the second wireless resource of the authorized spectrum configured for the UE to the eNB through the eNB. The UE sends the control signaling; or, The second sending unit is configured to send the control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indicates The information is sent by the eNB on the second radio resource of the authorized frequency spectrum configured by the eNB for the UE. 3. The device according to claim 2, wherein the second sending unit comprises: a first sending subunit, configured to send the second radio resource to the eNB when the target device is an eNB The UE sends the control signaling indication information, and then sends the control signaling to the UE through the third radio resource determined by the control signaling indication information, so that the UE sends the control signaling indication information receiving the control signaling on the third radio resource determined by the information; a second sending subunit, configured to, when the target device is the master UE sending the control signaling, determine that the UE receiving the control signaling is a slave UE, and receive the eNB on the second radio resource send the control signaling indication information, and then send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE receiving the control signaling on the third radio resource determined by the indication information. 4. The device according to claim 1, further comprising: a signal detection module, configured to detect the signal quality of the unlicensed spectrum every predetermined time; a first communication module, configured to When the result of the detection by the signal detection module is that the signal quality of the unlicensed spectrum satisfies a preset condition, instruct the UE to use the D2D communication mode to implement data transmission; the second communication module is used to detect The result is that when the signal quality of the unlicensed spectrum does not meet the preset condition, instruct the UE to implement data transmission in a cell communication mode, where the cell communication mode refers to that the UE performs data transmission through an eNB. 5. The device according to claim 1, wherein if the target device is the master UE and the D2D communication mode is broadcast or multicast, the device further comprises: a data dissemination module, configured to send data to at least one slave UE on the first radio resource in a broadcast or multicast manner after the signaling sending module sends the control signaling to the UE; A data sending module, configured to send the data to the slave UE again on the fourth radio resource of the authorized spectrum if there is a slave UE that has not received the data propagated by the data spreading module. 6. The device according to any one of claims 1 to 5, wherein the resource allocation module includes: A first allocating unit, configured to determine an available unlicensed spectrum if the target device is an eNB and there is no UE served by other eNBs among the UEs, and select from the determined unlicensed spectrum using the first radio resource of the unlicensed spectrum as the allocated first radio resource; The second allocating unit is configured to receive an unlicensed spectrum resource pool allocated by an eNB if the target device is a primary UE and there is no secondary UE served by other eNBs in the secondary UEs, the unlicensed spectrum resource pool The unlicensed spectrum in an available state is included, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource. 7. The device according to any one of claims 1 to 5, wherein the resource allocation module includes: a third allocating unit, configured to perform allocation negotiation with the other eNB if the target device is an eNB and there is at least one UE served by another eNB among the UEs, and use the eNB and the eNB obtained through negotiation The first radio resource of the unlicensed spectrum jointly occupied by other eNBs is used as the allocated a first radio resource; A fourth allocating unit, configured to receive unlicensed spectrum resources sent by an eNB serving the master UE if the target device is a master UE and there is at least one slave UE served by other eNBs in the slave UEs pool, the unlicensed spectrum resource pool is determined to be jointly occupied by the eNB and the other eNB after the allocation negotiation, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocation of the first wireless resource. 8. The device according to any one of claims 1 to 5, wherein the resource allocation module includes: A fifth allocating unit, configured to dynamically allocate the first radio resource of the unlicensed spectrum to the UE for each data transmission using the D2D communication mode; or, A sixth allocating unit, configured to allocate the first radio resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, where the semi-static allocation strategy is to assign the unlicensed spectrum each time the unlicensed spectrum is available A strategy for allocating the first radio resource of the unlicensed spectrum. 9. A device communication device, which is used in a target device, the device comprising: a processor, configured to allocate a first part of the unlicensed spectrum to a user equipment UE when the unlicensed spectrum is in an available state wireless resources, the unlicensed spectrum refers to the spectrum used by various wireless access systems for competition; generating control signaling corresponding to the UE according to the allocated first wireless resource, the control signaling carrying information for indicating the indication information of the first wireless resource; a transmitter, configured to send the control signaling generated by the processor to the UE, so that the UE uses a device-to-device D2D communication mode to implement data on the first radio resource determined according to the indication information transmission. 10. The device according to claim 9, wherein the transmitter is specifically configured to send the control signal to the UE through the second radio resource of the authorized spectrum configured by the evolved base station eNB for the UE or, sending the control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is an eNB sending on the second radio resource of the authorized frequency spectrum configured by the eNB for the UE. 11. The device according to claim 10, wherein the processor is specifically configured to When the target device is an eNB, sending the control signaling indication information to the UE through the second radio resource, and then sending the control signaling indication information to the UE through the third radio resource determined by the control signaling indication information The control signaling, so that the UE receives the control signaling on the third radio resource determined by the control signaling indication information; when the target device is the master UE sending the control signaling Determining that the UE receiving the control signaling is from the UE, receiving the control signaling indication information sent by the eNB on the second radio resource, and then using the control signaling indication information to determine the first The third radio resource sends the control signaling to the secondary UE, so that the secondary UE receives the control signaling on the third radio resource determined by the control signaling indication information. 12. The device according to claim 9, wherein the processor is further configured to detect the signal quality of the unlicensed spectrum every predetermined time; if the detection result is that the signal quality of the unlicensed spectrum satisfies Preset conditions, instructing the UE to implement data transmission using the D2D communication mode; if the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, instructing the UE to implement data transmission using a cell communication mode, The cell communication mode means that the UE performs data transmission through the eNB. 13. The device according to claim 9, wherein, if the target device is a master UE and the D2D communication mode is a broadcast or multicast mode, the transmitter is also used to send to the UE After the control signaling, send data to at least one secondary UE on the first radio resource in a broadcast or multicast manner; if there is a secondary UE that has not received the data, then on the fourth radio resource of the authorized spectrum send the data to the secondary UE again. 14. The device according to any one of claims 9 to 13, wherein the processor is specifically configured to: if the target device is an eNB and there is no UE served by other eNBs among the UEs, Then determine the unlicensed spectrum that is in an available state, and use the first wireless resource of the unlicensed spectrum selected from the determined unlicensed spectrum as the allocated first wireless resource; if the target device is the primary UE and There is no secondary UE served by other eNBs among the secondary UEs, then receive an unlicensed spectrum resource pool allocated by the eNB, the unlicensed spectrum resource pool includes unlicensed spectrum in an available state, and use the unlicensed spectrum resource pool from the unlicensed spectrum The first wireless resource of the unlicensed spectrum selected from the resource pool is used as the allocated first wireless resource. 15. The device according to any one of claims 9 to 13, wherein the processor is specifically configured to: if the target device is an eNB and there is at least one UE served by other eNBs among the UEs , performing allocation negotiation with the other eNB, using the negotiated first wireless resource of the unlicensed spectrum jointly occupied by the eNB and the other eNB as the allocated first wireless resource; if the target device is The master UE and there is at least one slave UE that is served by other eNBs in the slave UEs, then receiving an unlicensed spectrum resource pool sent by the eNB that provides services to the master UE, where the unlicensed spectrum resource pool is the eNB The first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource that is determined to be jointly occupied after the allocation negotiation with the other eNB. 16. The device according to any one of claims 9 to 13, wherein the processor is specifically configured to, for each data transmission using the D2D communication mode, dynamically allocate the The first wireless resource of the licensed spectrum; or, allocate the first wireless resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, and the semi-static allocation strategy is that every time the unlicensed spectrum is available The state is an allocation strategy for the first wireless resource of the unlicensed spectrum. 17. A device communication method, which is used in a target device, the method comprising: when the unlicensed spectrum is in an available state, allocating the first radio resource of the unlicensed spectrum to the user equipment UE, the The unlicensed spectrum refers to the spectrum used by various wireless access systems for competition; generating control signaling corresponding to the UE according to the allocated first radio resource, where the control signaling carries indication information for indicating the first radio resource; sending the control signaling to the UE, so that the UE implements data transmission in a device-to-device D2D communication mode on the first radio resource determined according to the indication information. 18. The method according to claim 17, wherein the sending the control signaling to the UE comprises: sending the control signaling to the UE through the second radio resource of the authorized spectrum configured by the eNB for the UE; or, Send the control signaling to the UE through a third radio resource of an unlicensed spectrum, the third radio resource is determined by control signaling indication information or pre-configuration, and the control signaling indication information is that the eNB in the eNB sending on the second radio resource of the licensed frequency spectrum configured for the UE. 19. The method according to claim 18, wherein the sending the control signaling to the UE through the first radio resource comprises: When the target device is an eNB, send the control signaling indication information to the UE through the second radio resource, and then send the control signaling indication information to the UE through the third radio resource determined by the control signaling indication information sending the control signaling, so that the UE receives the control signaling on the third radio resource determined by the control signaling indication information; When the target device is the master UE that sends the control signaling, determine that the UE that receives the control signaling is a slave UE, and receive the control signaling indication sent by the eNB on the second radio resource information, and then send the control signaling to the secondary UE through the third radio resource determined by the control signaling indication information, so that the secondary UE can use the third radio resource determined by the control signaling indication information The control signaling is received on a radio resource. 20. The method according to claim 17, further comprising: detecting the signal quality of the unlicensed spectrum every predetermined time; If the detection result is that the signal quality of the unlicensed spectrum satisfies a preset condition, instruct the UE to use the D2D communication mode to implement data transmission; If the detection result is that the signal quality of the unlicensed spectrum does not meet the preset condition, instruct the UE to use a cell communication mode to implement data transmission, and the cell communication mode means that the UE performs data transmission through the eNB. 21. The method according to claim 17, wherein if the target device is a master UE and the D2D communication mode is broadcast or multicast, after sending the control signaling to the UE , Also includes: sending data to at least one secondary UE on the first radio resource by broadcasting or multicasting; if there is a secondary UE that has not received the data, sending data to the secondary UE again on a fourth radio resource of the authorized spectrum Send the data. 22. The method according to any one of claims 17 to 21, wherein the allocating the first radio resource of the unlicensed spectrum for the user equipment UE comprises: If the target device is an eNB and there is no UE served by other eNBs among the UEs, Then determining an unlicensed spectrum that is in an available state, and using the first wireless resource of the unlicensed spectrum selected from the determined unlicensed spectrum as the allocated first wireless resource; If the target device is the master UE and there is no slave UE served by other eNBs among the slave UEs, receive an unlicensed spectrum resource pool allocated by the eNB, the unlicensed spectrum resource pool includes unlicensed spectrum resources in an available state Spectrum, using the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool as the allocated first wireless resource. 23. The method according to any one of claims 17 to 21, wherein the allocating the first radio resource of the unlicensed spectrum to the user equipment UE comprises: If the target device is an eNB and there is at least one UE served by other eNBs among the UEs, perform allocation negotiation with the other eNBs, and use the negotiated unlicensed a first radio resource of spectrum as the allocated first radio resource; If the target device is a master UE and there is at least one slave UE that is served by other eNBs among the slave UEs, receive an unlicensed spectrum resource pool sent by an eNB that provides services to the master UE, and the unlicensed spectrum The resource pool is determined to be jointly occupied by the eNB and the other eNB after the allocation negotiation, and the first wireless resource of the unlicensed spectrum selected from the unlicensed spectrum resource pool is used as the allocated first wireless resource . 24. The method according to any one of claims 17 to 21, wherein the allocating the first radio resource of the unlicensed spectrum for the user equipment UE comprises: For each data transmission using the D2D communication mode, dynamically allocate the first radio resource of the unlicensed spectrum to the UE; or, Allocating the first radio resource of the unlicensed spectrum to the UE according to a pre-configured semi-static allocation strategy, where the semi-static allocation strategy is to allocate the first radio resource of the unlicensed spectrum each time the unlicensed spectrum is available A strategy for allocating radio resources.