WO2017167196A1 - Uplink transmission method, user equipment, base station and system - Google Patents

Abstract

Provided are an uplink transmission method, a user equipment (UE), a base station and a system. The method can comprise: receiving indication information sent by a base station; according to the indication information, determining a detection resource for performing listen before talk (LBT) detection; and performing the LBT detection at the detection resource to access a channel, and using the channel in a scheduled subframe to perform uplink transmission to the base station. The uplink transmission method in the present disclosure can save transmission resources.

Description

Uplink transmission method, user equipment, base station and system

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 20161019755, filed on Jan. 31, 2016, the entire content of

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to an uplink transmission method, a user equipment (UE, a base station, and a system).

Background technique

As the volume of mobile data continues to grow, spectrum resources become more and more tense. Only the use of licensed spectrum resources for network deployment and service transmission may not meet the traffic demand. Therefore, the Long Term Evolution (LTE) system considers deploying transmissions on unlicensed spectrum resources, that is, Unlicensed LTE (U-LTE or LTE-U) to improve user experience and extended coverage.

In order to support the frequency selective scheduling of the uplink transmission of multiple UEs, the LTE-U system is configured with a subframe for transmitting a sounding reference signal (SRS), and the UE transmits the SRS in the subframe to implement frequency selective scheduling. The SRS symbol for transmitting the SRS during actual transmission is always after the symbol of the uplink data of the Physical Uplink Shared Channel (PUSCH). For example: the last symbol in a sub-frame is an SRS symbol. However, in practical applications, there may be that the UE does not transmit the SRS in the SRS symbol of the subframe, so that the UE cannot access the channel in the next subframe of the subframe, thereby causing waste of transmission resources.

Summary of the invention

The present disclosure provides an uplink transmission method, a UE, a base station, and a system, which solves the problem of waste of transmission resources.

Some embodiments of the present disclosure provide an uplink transmission method, including:

Receiving indication information sent by the base station;

Determining, according to the indication information, a detection resource that is detected by Listening Before Talk (LBT);

Performing, by the detection resource, the LBT detection access channel, and performing uplink transmission to the base station by using the channel in the scheduled subframe.

Optionally, the determining, according to the indication information, the detection resource for performing LBT detection, including:

If the indication information indicates that the LBT resource is not configured in the scheduled subframe, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection.

Optionally, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection, and includes:

Using the SRS symbol of the previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or

The idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection.

Optionally, the determining, according to the indication information, the detection resource for performing LBT detection, including:

If the indication information indicates that the scheduled subframe is configured with an LBT resource, the LBT resource configured in the scheduled subframe is used as a detection resource for performing the LBT operation.

Optionally, the method further includes:

Receiving signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission;

The performing uplink transmission to the base station by using the channel in the scheduled subframe includes:

And using the channel to perform uplink transmission to the base station according to the signaling in a resource including an SRS symbol in a scheduled subframe.

Some embodiments of the present disclosure further provide an uplink transmission method, including:

Sending indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs the LBT detection access channel on the detection resource;

Receiving uplink transmission performed by the UE in the scheduled subframe using the channel.

Optionally, the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection.

Optionally, the detection resource is an SRS symbol of a previous subframe of the scheduled subframe; or

The detection resource is an idle resource of a previous subframe of the scheduled subframe.

Optionally, the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as a detection resource for performing the LBT operation.

Optionally, the method further includes:

Transmitting signaling to the UE indicating that the SRS symbol is occupied for uplink transmission;

Receiving the uplink transmission performed by the UE in the scheduled subframe by using the channel, including:

Receiving, by the UE, uplink transmission using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

Some embodiments of the present disclosure also provide a UE, including:

a first receiving module, configured to receive indication information sent by the base station;

a determining module, configured to determine, according to the indication information, a detection resource that performs LBT detection;

And a transmitting module, configured to perform the LBT detection access channel on the detection resource, and perform uplink transmission to the base station by using the channel in the scheduled subframe.

Optionally, the determining module is configured to: if the indication information indicates that the scheduled subframe is not configured with an LBT resource, use the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection. .

Optionally, the determining module is configured to use an SRS symbol of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or

The determining module is configured to use an idle resource of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection.

Optionally, the determining module is configured to: when the indication information indicates that the scheduled subframe is configured with an LBT resource, use the LBT resource configured in the scheduled subframe as a detection resource for performing the LBT operation.

Optionally, the UE further includes:

a second receiving module, configured to receive signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission;

The transmitting module is configured to perform uplink transmission to the base station by using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

Some embodiments of the present disclosure also provide a base station, including:

a first sending module, configured to send, to the UE, the indication information, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, where the LBT detects an access channel in the detection resource;

And a receiving module, configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel.

Optionally, the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection.

Optionally, the detection resource is an SRS symbol of a previous subframe of the scheduled subframe; or

The detection resource is an idle resource of a previous subframe of the scheduled subframe.

Optionally, the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as a detection resource for performing the LBT operation.

Optionally, the base station further includes:

a second sending module, configured to send, to the UE, signaling that indicates that the SRS symbol is occupied for uplink transmission;

The receiving module is configured to receive uplink transmission performed by the UE by using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

Some embodiments of the present disclosure also provide an uplink transmission system, including:

a base station, configured to send indication information to the UE;

The UE is configured to receive indication information sent by the base station;

The UE is further configured to determine, according to the indication information, a detection resource that performs LBT detection;

The UE is further configured to perform the LBT detection access channel on the detection resource, and use the channel to perform uplink transmission to the base station in a scheduled subframe;

The base station is further configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel.

Some embodiments of the present disclosure also provide a UE, including a processor, a transceiver, and a memory;

The processor is configured to read a computer readable program in the memory to perform the following operations:

Receiving, by the transceiver, indication information sent by the base station;

Determining, according to the indication information, a detection resource for performing LBT detection;

Performing, by the detection resource, the LBT detection access channel, and performing uplink transmission to the base station by using the channel in the scheduled subframe;

The transceiver is configured to receive and transmit data under control of the processor;

The memory is used to store data used by the processor to perform operations.

Some embodiments of the present disclosure also provide a base station, including a processor, a transceiver, and a memory;

The processor is configured to read a computer readable program in the memory to perform the following operations:

And transmitting, by the transceiver, the indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs, by using the detection resource, the LBT detection access channel;

Receiving, by the transceiver, uplink transmission performed by the UE in the scheduled subframe by using the channel;

The transceiver is configured to receive and transmit data under control of the processor;

The memory is used to store data used by the processor to perform operations.

In the embodiment of the present disclosure, the indication information sent by the base station is received, and the detection resource for performing the LBT detection is determined according to the indication information, the LBT detection access channel is performed on the detection resource, and the used channel is used in the scheduled subframe. The channel performs uplink transmission to the base station. In this way, the LBT access channel can be implemented according to the detection resource determined by the indication information, so that the subframes that cannot access the channel can be avoided, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

DRAWINGS

FIG. 1 is a schematic structural diagram of a network according to an embodiment of the present disclosure;

2 is a schematic flowchart of an uplink transmission method according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a subframe transmission data according to an embodiment of the present disclosure;

4 is a schematic diagram of a subframe transmission data according to an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart of an uplink transmission method according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of an uplink transmission system according to an embodiment of the present disclosure.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in conjunction with the accompanying drawings and specific embodiments.

The embodiments of the present disclosure are directed to the related art that the UE does not transmit the SRS in the SRS symbol of the subframe, so that the UE cannot access the channel in the next subframe of the subframe, thereby causing waste of transmission resources, and providing an uplink transmission method. UE, base station and system. In the embodiment of the disclosure, the detection information sent by the base station is used to determine the detection resource for performing the LBT detection, so that the detection resource performs the LBT detection access channel, and uses the channel to perform uplink transmission to the base station in the scheduled subframe to avoid Sub-frames that cannot access the channel appear to save transmission resources.

Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of a network according to some embodiments of the present disclosure. As shown in FIG. 1 , the UE 11 and the base station 12 are included. The UE 11 may be a terminal device that can access the network, such as a mobile phone, a tablet computer, a personal computer, a notebook computer, or a wearable device. It should be noted that the specific type of the UE 11 is not limited in the embodiment of the present disclosure. The UE 11 can establish communication with the base station 12. The base station 12 can be an evolved base station (eNB) or other base station. It should be noted that the specific type of the base station 12 is not limited in the embodiment of the present disclosure.

Based on the network structure shown in FIG. 1 , some embodiments of the present disclosure provide an uplink transmission method, as shown in FIG. 2 , including the following steps:

201. Receive indication information sent by the base station.

202. Determine, according to the indication information, a detection resource that performs LBT detection.

203. Perform the LBT detection access channel on the detection resource, and perform uplink transmission to the base station by using the channel in the scheduled subframe.

In this embodiment, the indication information may be used to indicate that the detection resource for determining the LBT detection is determined, so that the step 202 may determine the detection resource according to the indication information. The foregoing detection resource can be understood as a starting resource for performing LBT detection, that is, step 202 can be understood as determining a starting position for performing LBT detection. Or the above detection resources can also be understood as resources required for LBT detection. That is, step 202 can be understood as determining the detection position at which the LBT detection is performed. In addition, the foregoing detection resource may include one or more symbols, or the detection resource may further include a part of the content in a single symbol, etc., which is not limited in this embodiment. The symbol may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or may be a Single-Carrier Frequency Division Multiple Access (SC-FDMA) symbol. In addition, the foregoing uplink transmission may transmit uplink data or uplink signaling, etc., which is not limited in this embodiment.

In this embodiment, the channel may be a physical uplink channel, for example, a Physical Uplink Shared Channel (PUSCH). Of course, in some scenarios, the channel may be another physical uplink channel, for example, a physical layer is randomly connected. The present invention is not limited to the present invention (PRACH, Physical Random Access Channel) and the like.

The above-mentioned scheduled subframe may be a subframe scheduled by the UE, or the scheduled subframe may also understand the current subframe, that is, the subframe currently used by the UE after the UE accesses the channel. In addition, the scheduled subframe may be a subframe in a Frequency Division Duplexing (FDD) radio frame, or the scheduled subframe may be a sub-frame in a Time Division Duplexing (TDD) radio frame. Frames, etc. In addition, the foregoing detection resource and the scheduled subframe may also belong to the same radio frame, that is, step 202 may be: determining the detection resource in the radio frame, and performing uplink transmission in the scheduled subframe of the radio frame.

In addition, the uplink transmission may refer to an uplink transmission performed after the LBT detection successfully accesses the channel.

As an optional implementation manner, step 202 may include:

If the indication information indicates that the LBT resource is not configured in the scheduled subframe, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection.

The foregoing indication information may be explicitly or implicitly indicating that the LBT resource is not configured in the scheduled subframe. It can be understood that the foregoing indication information explicitly indicates that the LBT resource is not configured in the scheduled subframe, and implicitly, the indication information implicitly indicates that the scheduled subframe is not configured. For example, the LBT resource configuration field includes the LBT resource configuration field, but the field is internally 0, and the 0 can represent 0 symbols as the LBT resource, that is, the LBT resource is not configured. In addition, the previous subframe of the scheduled subframe may be the previous subframe of the scheduled subframe in the radio frame to which the scheduled subframe belongs, which is not limited in this embodiment.

In this implementation manner, since the resource of the previous subframe of the scheduled subframe can be used as the detection resource, step 203 may be LBT detection in the resource of the previous frame of the scheduled subframe to implement scheduling. The LBT detection is performed before the boundary of the subframe, and the uplink transmission is started at the boundary of the scheduled subframe, thereby effectively utilizing the resources of the previous frame of the scheduled subframe to avoid waste of resources of the previous subframe.

Optionally, in this implementation, the step of using the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection may include:

The SRS symbol of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection.

In this implementation manner, LBT detection may be performed on the SRS symbols of the previous subframe, so that uplink transmission may be started at the boundary of the scheduled subframe. For example, as shown in FIG. 3, UE1 and UE2 may perform LBT detection on the SRS symbol of subframe 1, so that UE1 and UE2 start uplink transmission at the boundary of subframe 2, wherein the above uplink transmission is an example of uplink data in the drawing. Description.

In this implementation manner, the uplink transmission may be started at the boundary of the scheduled subframe, that is, the LBT resource does not need to be configured for the scheduled subframe, for example, the idle channel assessment time slot (CCA gap, Clear Channel is not configured for the scheduled subframe). Assessment gap), because the overhead of the CCA gap is large, the base station does not need to reserve a CCA gap for each subframe to save network transmission resources. In addition, since the small cell channel of the unlicensed band is slowly changed, the base station does not need to configure the SRS transmission for each SRS subframe. Therefore, the SRS symbol is time-division multiplexed to complete the SRS transmission and channel connection. Into, do not waste transmission resources. Certainly, in this implementation manner, performing LBT detection on the SRS symbol of the previous subframe of the UE is only a special case in which the UE performs LBT detection before the scheduled subframe boundary according to the indication of the base station, and does not exclude that the UE may be before the scheduled subframe boundary. Multiple SC-FDMA symbol execution LBT detection situation.

In addition, in this implementation manner, the LBT detection may be performed by performing CCA at least 25us before the scheduled subframe boundary, that is, the SRS symbol is at least 25us apart from the scheduled subframe, and if the CCA result indicates that the channel is idle, The UE access channel starts uplink transmission from the boundary of the scheduled subframe. Alternatively, the LBT detection may be performed to start CCA detection at the start position of the null SRS symbol, and the random back off counter starts to perform the countdown. If the channel detection is idle before the scheduled subframe boundary, and the back is back (back Off) If the counter countdown is 0, the UE access channel is uplinked from the boundary of the scheduled subframe. Otherwise, the UE fails to access the uplink and abandons the uplink data. The foregoing LBT detection mode may be configured by the base station to the UE. Certainly, the manner in which the UE actively selects the LBT detection is not excluded in some scenarios, which is not limited in this embodiment.

In addition, the foregoing SRS symbol may be the last symbol in the subframe, or the SRS symbol may be other symbols in the subframe, which is not limited in this embodiment.

Optionally, in the foregoing implementation manner, the step of using the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection may include:

The idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection.

In this embodiment, an idle resource in a previous subframe of the scheduled subframe may be implemented as the detection resource, for example, a symbol that is idle in the previous subframe is used as the detection resource. In this implementation manner, uplink transmission may be started at the boundary of the scheduled subframe, that is, the LBT resource does not need to be configured for the scheduled subframe. In addition, the implementation of the LBT detection in this embodiment may refer to the LBT detection introduced in the above embodiment, and details are not described herein.

As an optional implementation manner, the foregoing determining, according to the indication information, the detection resource for performing LBT detection includes:

If the indication information indicates that the scheduled subframe is configured with an LBT resource, the LBT resource configured in the scheduled subframe is used as a detection resource for performing the LBT operation.

In this implementation manner, the indication information may be explicitly or implicitly indicating the scheduled subframe configuration. LBT resources are placed. It can be understood that the indication information explicitly indicates that the scheduled subframe is configured with the LBT resource, and the implicit indication that the indication information implicitly indicates that the scheduled subframe is configured with the LBT resource, for example, the indication information includes the LBT. The resource configuration field, but the field is internally 1 or 2, and the 1 or 2 can represent 1 or 2 symbols as the above LBT resource.

In this implementation manner, the LBT resource may be a CCA gap, where the CCA gap may be 1-2 OFDM symbols, and the specific size needs a base station configuration. In this embodiment, step 203 may be performing LBT detection on the CCA gap to access the channel. For example, the UE may start performing CCA at least 25us before the boundary of the resource used for uplink transmission in the scheduled subframe, where the CCA start and end points are completely within a symbol range before the resource start point for uplink transmission, if The CCA result channel is idle, and the UE access channel uses an incomplete (partial) subframe for uplink transmission. The resource used for uplink transmission in the scheduled subframe may be understood as a physical uplink channel resource of the scheduled subframe, for example, a PUSCH resource. In addition, the LBT detection may be that the UE performs LBT detection from the start position of the CCA gap, and performs a back off counter countdown. If the boundary for the uplink transmission is used in the scheduled subframe, the channel detection is If the back-down counter counts down to 0, the UE accesses the channel for uplink transmission. Otherwise, the UE fails to access the current data and abandons the uplink data. This embodiment can implement LBT detection in the CCA gap before the subframe boundary, thereby avoiding resource waste caused by SRS blocking uplink data transmission. The foregoing LBT detection mode may be configured by the base station to the UE. Certainly, the manner in which the UE actively selects the LBT detection is not excluded in some scenarios, which is not limited in this embodiment.

In addition, in some scenarios, if the foregoing indication information indicates that the scheduled subframe is configured with LBT resources, this embodiment does not exclude that the UE may also use the resource of the previous frame of the scheduled subframe as the LBT detection. The detection resource is only an implementation manner in which the above-configured LBT resource is used as the above-described detection resource. And in some scenarios, the foregoing indication information may further indicate that the foregoing detection resource is determined according to a pre-negotiated determination rule, and the UE may use the determining rule to determine the detection resource. The determining rule may be that the UE and the base station are pre-negotiated. For example, the determining rule may be using the resource of the previous subframe of the scheduled subframe as the detection resource, or determining. The rule may be to use one or more resources before the scheduled subframe as the above detection resource.

Optionally, in this implementation manner, the foregoing method may further include the following steps.

Receiving signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission;

The step of performing the uplink transmission to the base station by using the channel in the scheduled subframe may include:

And using the channel to perform uplink transmission to the base station according to the signaling in a resource including an SRS symbol in a scheduled subframe.

In an implementation manner, uplink transmission may be implemented by using SRS symbols of a subframe, because SRS symbols are not scheduled for SRS transmission in some scenarios, so that the SRS symbol is used for uplink transmission to avoid wasting empty SRS symbols. In addition, in this implementation manner, when no SRS transmission is scheduled in the previous subframe of the scheduled subframe, the UE may further perform uplink transmission by using the SRS symbol of the previous subframe. For example, as shown in FIG. 4, the base station is in the SRS. The subframe is not scheduled for SRS symbol transmission SRS, and the CCA gap reserved by the base station in the scheduled frame is used for LBT detection channel access, so that the foregoing signaling may indicate that UE1 and UE2 perform uplink transmission to occupy the SRS symbol of the SRS subframe, thereby SRS The sub-frame transmits a complete sub-frame instead of the original standard 13-symbol partial sub-frame, wherein the above-mentioned line transmission is exemplified for the uplink data.

In this embodiment, the SRS symbol may be the last symbol in the subframe, or the SRS symbol may be other symbols in the subframe, which is not limited in this embodiment.

It should be noted that the multiple optional embodiments described above may be implemented in combination with each other, and may be implemented separately, which is not limited thereto.

It should be noted that the foregoing method may be applied to the unlicensed frequency band LTE (ie, LTE-U or U-LTE), that is, the foregoing channel may be a channel of an unlicensed frequency band. In addition, the above method can be applied to UEs in the network structure shown in FIG. 1.

In this embodiment, the indication information sent by the base station is received, and the detection resource for performing LBT detection is determined according to the indication information, the LBT detection access channel is performed on the detection resource, and the channel is used in the scheduled subframe. Perform uplink transmission to the base station. This can be achieved based on the indication information The fixed detection resource performs the LBT access channel, thereby avoiding the occurrence of subframes that cannot access the channel, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

Based on the network structure shown in FIG. 1 , some embodiments of the present disclosure provide another uplink transmission method, as shown in FIG. 5 , including the following steps:

501. Send the indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs, by using the detection resource, the LBT detection access channel.

502. Receive uplink transmission performed by the UE in the scheduled subframe by using the channel.

For the implementation of the steps 501 and 502, refer to the implementation manners of the steps 201, 202, and 203 in the embodiment shown in FIG. 2, and details are not described herein again.

As an optional implementation manner, the indication information may indicate that the scheduled subframe does not configure an LBT resource, so that the UE uses the resource of the previous subframe of the scheduled subframe as the LBT. Detection resources detected.

Optionally, in this implementation manner, the foregoing detection resource may be an SRS symbol of a previous subframe of the scheduled subframe; or

The foregoing detection resource may be an idle resource of a previous subframe of the scheduled subframe.

In this embodiment, reference may be made to the implementation manner in the embodiment shown in FIG. 2 that the indication information indicates that the LBT resource is not configured in the scheduled subframe, and details are not described herein again.

As an optional implementation manner, the foregoing indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection of the LBT operation. Resources.

Optionally, in this implementation manner, the foregoing method may further include the following steps:

Transmitting signaling to the UE indicating that the SRS symbol is occupied for uplink transmission;

The step of receiving the uplink transmission performed by the UE in the scheduled subframe by using the channel may include:

Receiving, by the UE, uplink transmission using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

For the implementation of the embodiment, reference may be made to the implementation manner of the LBT resource indicating the configuration of the scheduled subframe in the embodiment shown in FIG. 2, and details are not described herein again.

It should be noted that the foregoing method may be applied to the unlicensed frequency band LTE (ie, LTE-U or U-LTE), that is, the foregoing channel may be a channel of an unlicensed frequency band. In addition, the above method can be applied to a base station in the network structure shown in FIG. 1.

In this embodiment, the indication information is sent to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, performs the LBT detection access channel on the detection resource, and receives the UE in the scheduled subframe. Uplink transmission using the channel. In this way, the detection resource determined by the UE can be used to perform the LBT access channel by using the indication information, so that the subframe that cannot access the channel can be avoided, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

Referring to FIG. 6, a structure of a UE is shown, where the UE includes the following modules:

The first receiving module 61 is configured to receive indication information sent by the base station;

a determining module 62, configured to determine, according to the indication information, a detection resource that performs LBT detection;

The transmitting module 63 is configured to perform the LBT detection access channel on the detection resource, and perform uplink transmission to the base station by using the channel in the scheduled subframe.

As an optional implementation manner, the determining module 62 may be configured to: if the indication information indicates that the scheduled subframe does not configure an LBT resource, perform the resource of the previous subframe of the scheduled subframe as The detection resource of the LBT detection.

Optionally, in this implementation manner, the determining module 62 is configured to use an SRS symbol of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or

The determining module 62 may be configured to use an idle resource of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection.

As an optional implementation manner, the determining module 62 may be configured to: if the indication information indicates that the scheduled subframe is configured with an LBT resource, use the LBT resource configured in the scheduled subframe as the LBT operation. Detection resources.

Optionally, in this implementation manner, as shown in FIG. 7, the UE may further include:

The second receiving module 64 is configured to receive signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission;

The transmitting module 63 may be configured to perform uplink transmission to the base station by using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

In this embodiment, the foregoing UE may be the UE in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the UE in the embodiment shown in FIG. 1 to FIG. 5 may be used by the UE in this embodiment. Implementation, no longer elaborate here. The above UE can save transmission resources.

Referring to FIG. 8, there is shown a structure of a base station, which includes the following modules:

The first sending module 81 is configured to send indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs the LBT detection access channel on the detection resource.

The receiving module 82 is configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel.

As an optional implementation manner, the foregoing indication information may indicate that the scheduled subframe does not configure an LBT resource, so that the UE uses the resource of the previous subframe of the scheduled subframe as the LBT detection. Detection resources.

Optionally, in this implementation manner, the foregoing detection resource may be an SRS symbol of a previous subframe of the scheduled subframe; or

The foregoing detection resource may be an idle resource of a previous subframe of the scheduled subframe.

As an optional implementation manner, the foregoing indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection of the LBT operation. Resources.

Optionally, in this implementation manner, as shown in FIG. 9, the foregoing base station may further include:

The second sending module 83 is configured to send, to the UE, signaling that indicates that the SRS symbol is occupied for uplink transmission;

The receiving module 82 may be configured to receive, by the UE, an SRS in the scheduled subframe according to the signaling. Uplink transmission using the channel in resources including symbols.

In this embodiment, the foregoing base station may be the base station in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the base station in the embodiment shown in FIG. 1 to FIG. 5 may be used by the base station in this embodiment. Implementation, no longer elaborate here. The above base station can save transmission resources.

Referring to FIG. 10, a structure of a UE is shown. The UE includes: a processor 1000, a transceiver 1010, a memory 1020, a user interface 1030, and a bus interface, where:

The processor 1000 is configured to read a program in the memory 1020 and perform the following process:

Receiving, by the transceiver 1010, indication information sent by the base station;

Determining, according to the indication information, a detection resource for performing LBT detection;

Performing, by the detection resource, the LBT detection access channel, and performing uplink transmission to the base station by using the channel in the scheduled subframe.

The transceiver 1010 is configured to receive and transmit data under the control of the processor 1000.

In FIG. 10, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1000 and various circuits of memory represented by memory 1020. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 1030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 in performing operations.

As an optional implementation manner, the foregoing determining, by the processor 1000, the detection resource that performs the LBT detection according to the indication information may include:

If the indication information indicates that the LBT resource is not configured in the scheduled subframe, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection.

Optionally, in this implementation manner, the detecting, by the processor 1000, the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection may include:

Using a sounding reference signal SRS symbol of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or

The idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection.

As an optional implementation manner, determining, by the processor 1000, the detection resource that performs the LBT detection according to the indication information may include:

If the indication information indicates that the scheduled subframe is configured with an LBT resource, the LBT resource configured in the scheduled subframe is used as a detection resource for performing the LBT operation.

Optionally, in this implementation manner, the processor 1000 may also perform the following processes:

Receiving signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission;

The performing, by the processor 1000, the uplink transmission to the base station by using the channel in the scheduled subframe may include:

And using the channel to perform uplink transmission to the base station according to the signaling in a resource including an SRS symbol in a scheduled subframe.

In this embodiment, the foregoing UE may be the UE in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the UE in the embodiment shown in FIG. 1 to FIG. 5 may be used by the UE in this embodiment. Implementation, no longer elaborate here. The above UE can save transmission resources.

Referring to FIG. 11, there is shown a structure of a base station including: a processor 1100, a transceiver 1110, a memory 1120, a user interface 1130, and a bus interface, wherein:

The processor 1100 is configured to read a program in the memory 1120 and perform the following process:

Transmitting, by the transceiver 1110, the indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs the LBT detection access channel on the detection resource;

The uplink transmission performed by the UE in the scheduled subframe by using the channel is received by the transceiver 1110.

The transceiver 1110 is configured to receive and transmit data under the control of the processor 1100.

Wherein, in FIG. 11, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1110 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.

The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.

As an optional implementation manner, the foregoing indication information may indicate that the scheduled subframe does not configure an LBT resource, so that the UE uses the resource of the previous subframe of the scheduled subframe as the LBT detection. Detection resources.

Optionally, in this implementation manner, the foregoing detection resource may be an SRS symbol of a previous subframe of the scheduled subframe; or

The foregoing detection resource may be an idle resource of a previous subframe of the scheduled subframe.

As an optional implementation manner, the foregoing indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection of the LBT operation. Resources.

Optionally, in this implementation manner, the processor 1100 may also perform the following processes:

Transmitting signaling to the UE indicating that the SRS symbol is occupied for uplink transmission;

The receiving, by the processor 1100, receiving, by the transceiver 1110, the uplink transmission performed by the UE in the scheduled subframe by using the channel, includes:

Receiving, by the transceiver 1110, the uplink transmission performed by the UE using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling.

In this embodiment, the foregoing base station may be the base station in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the base station in the embodiment shown in FIG. 1 to FIG. 5 may be used by the base station in this embodiment. Implementation, no longer elaborate here. The above base station can save transmission resources.

Referring to Figure 12, there is shown a structure of an uplink transmission system, the system comprising:

The base station 121 is configured to send indication information to the UE 122.

The UE 122 is configured to receive indication information sent by the base station.

The UE 122 is further configured to determine, according to the indication information, a detection resource that performs LBT detection;

The UE 122 is further configured to perform the LBT detection access channel on the detection resource, and perform uplink transmission to the base station by using the channel in the scheduled subframe.

The base station 121 is further configured to receive an uplink transmission performed by the UE 122 in the scheduled subframe by using the channel.

In this embodiment, the base station 121 and the UE 122 may be the base station and the UE described in the embodiments shown in FIG. 1 to FIG. 11. The implementation manners of the base station 121 and the UE are as shown in the embodiments shown in FIG. 1 to FIG. The effect will not be described here.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above integrated unit implemented in the form of a software functional unit can be stored in a computer Read in the storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. It should be considered as the scope of protection of this disclosure.

Claims (23)

An uplink transmission method includes: Receiving indication information sent by the base station; Determining, according to the indication information, a detection resource that performs a listen-before-speak (LBT) detection; Performing, by the detection resource, the LBT detection access channel, and performing uplink transmission to the base station by using the channel in the scheduled subframe. The method of claim 1, wherein the determining the detection resource for performing the LBT detection according to the indication information comprises: If the indication information indicates that the LBT resource is not configured in the scheduled subframe, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection. The method of claim 2, wherein the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection, and includes: Using a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or The idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection. The method of claim 1, wherein the determining the detection resource for performing the LBT detection according to the indication information comprises: If the indication information indicates that the scheduled subframe is configured with an LBT resource, the LBT resource configured in the scheduled subframe is used as a detection resource for performing the LBT operation. The method of claim 4 further comprising: Receiving signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission; The performing uplink transmission to the base station by using the channel in the scheduled subframe includes: And using the channel to perform uplink transmission to the base station according to the signaling in a resource including an SRS symbol in a scheduled subframe. An uplink transmission method includes: And transmitting, to the user equipment (UE), the indication information, so that the UE determines, according to the indication information, a detection resource that performs a Listen-Before-Talk (LBT) detection, where the LBT detects an access channel; Receiving uplink transmission performed by the UE in the scheduled subframe using the channel. The method of claim 6, wherein the indication information indicates that the scheduled subframe is not configured with LBT resources, so that the UE uses the resources of the previous subframe of the scheduled subframe as the performing Detection resources for LBT detection. The method of claim 7, wherein the detection resource is a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe; or The detection resource is an idle resource of a previous subframe of the scheduled subframe. The method of claim 6, wherein the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the LBT operation. Detection resources. The method of claim 9 further comprising: Transmitting signaling to the UE indicating that the SRS symbol is occupied for uplink transmission; Receiving the uplink transmission performed by the UE in the scheduled subframe by using the channel, including: Receiving, by the UE, uplink transmission using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling. A User Equipment (UE) comprising: a first receiving module, configured to receive indication information sent by the base station; a determining module, configured to determine, according to the indication information, a detection resource that performs a listen-before-speak (LBT) detection; And a transmitting module, configured to perform the LBT detection access channel on the detection resource, and perform uplink transmission to the base station by using the channel in the scheduled subframe. The UE of claim 11, wherein the determining module is configured to: if the indication information Indicates that the LBT resource is not configured in the scheduled subframe, and the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection. The UE according to claim 12, wherein the determining module is configured to use a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection; or The determining module is configured to use an idle resource of a previous subframe of the scheduled subframe as a detection resource for performing the LBT detection. The UE according to claim 11, wherein the determining module is configured to: if the indication information indicates that the scheduled subframe is configured with an LBT resource, use the LBT resource configured in the scheduled subframe as the performing Detection resources for LBT operations. The UE of claim 14, further comprising: a second receiving module, configured to receive signaling sent by the base station to indicate that the SRS symbol is occupied for uplink transmission; The transmitting module is configured to perform uplink transmission to the base station by using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling. A base station comprising: a first sending module, configured to send, to the user equipment (UE), the indication information, so that the UE determines, according to the indication information, a detection resource that performs a Listening and Listening (LBT) detection, where the LBT is performed on the detection resource. Detecting an access channel; And a receiving module, configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel. The base station according to claim 16, wherein the indication information indicates that the scheduled subframe does not configure an LBT resource, so that the UE uses the resource of a previous subframe of the scheduled subframe as the performing Detection resources for LBT detection. The base station according to claim 17, wherein the detection resource is a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe; or The detection resource is an idle resource of a previous subframe of the scheduled subframe. The base station according to claim 16, wherein the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE configures an LBT resource in the scheduled subframe as performing the LBT operation. Detect resources. The base station of claim 19, further comprising: a second sending module, configured to send, to the UE, signaling that indicates that the SRS symbol is occupied for uplink transmission; The receiving module is configured to receive uplink transmission performed by the UE by using the channel in a resource including an SRS symbol in a scheduled subframe according to the signaling. An uplink transmission system comprising: a base station, configured to send indication information to a user equipment (UE); The UE is configured to receive indication information sent by the base station; The UE is further configured to determine, according to the indication information, a detection resource that performs a Listen After Listening (LBT) detection; The UE is further configured to perform the LBT detection access channel on the detection resource, and use the channel to perform uplink transmission to the base station in a scheduled subframe; The base station is further configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel. A user equipment (UE), including a processor, a transceiver, and a memory; The processor is configured to read a computer readable program in the memory to perform the following operations: Receiving, by the transceiver, indication information sent by the base station; Determining, according to the indication information, a detection resource for performing a Listen-Before-Talk (LBT) detection; Performing, by the detection resource, the LBT detection access channel, and performing uplink transmission to the base station by using the channel in the scheduled subframe; The transceiver is configured to receive and transmit data under control of the processor; The memory is used to store data used by the processor to perform operations. A base station comprising a processor, a transceiver, and a memory; The processor is configured to read a computer readable program in the memory to perform the following operations: Transmitting, by the transceiver, the indication information to the user equipment (UE), so that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs LBT detection on the detection resource. Into the channel; Receiving, by the transceiver, uplink transmission performed by the UE in the scheduled subframe by using the channel; The transceiver is configured to receive and transmit data under control of the processor; The memory is used to store data used by the processor to perform operations.

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