WO2023155684A1 - Data transmission method and apparatus, device, and storage medium - Google Patents

Abstract

Embodiments of the present application provide a data transmission method and apparatus, a device, and a storage medium. The method comprises: a network device receives a measurement result of R first beams sent by a terminal device, the R first beams comprising beams of a relay device; the network device determines a second beam from among the R first beams according to the measurement result; and if the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, the beam information being used for instructing the relay device to forward data between the network device and the terminal device by means of the second beam. According to the embodiments of the present application, the specific solution in which the network device controls the relay device to directionally forward or send data is provided, and energy loss during the data transmission process can be reduced.

Description

Data transmission method, device, equipment and storage medium

This application claims the priority of the Chinese patent application with the application number 202210152594.2 and the application name "data transmission method, device, equipment and storage medium" submitted to the State Intellectual Property Office on February 18, 2022, the entire content of which is incorporated by reference in this application.

technical field

The present application relates to the communication field, and in particular to a data transmission method, device, equipment and storage medium.

Background technique

5G networks can support higher data rates and lower latency by using millimeter wave frequency bands. However, since the mmWave band uses very high frequencies, there will be significant losses, resulting in less coverage for 5G networks. In order to increase coverage, a relay device is usually selected to receive or forward data without distinction in all directions.

In Release 18 of the Third Generation Partnership Project (Third Generation Partnership Project, 3GPP), it is hoped to introduce an intelligent relay device. The intelligent relay device can direct forward or send data based on the information of the terminal device, so as to reduce the energy loss during data transmission. However, Release 18 does not specify how to control intelligent relay devices to achieve directional reception or forwarding of data.

Contents of the invention

Embodiments of the present application provide a data transmission method, device, device, and storage medium, so that an intelligent relay device can direct forward or send data.

In the first aspect, the embodiment of the present application provides a data transmission method, including:

The network device receives the measurement results of the R first beams sent by the terminal device, where the R first beams include beams of the relay device;

The network device determines a second beam among the R first beams according to the measurement result;

If the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, and the beam information is used to instruct the relay device to pass through the relay device. The second beam forwards the data between the network device and the terminal device.

In a possible implementation manner, the network device receives the R first Before beam measurement results, also include:

The network device determines M third beams in the beams of the network device, and determines N fourth beams in the beams of the relay device, and the M and the N are integers;

The network device sends a reference signal to the terminal device through the M third beams, and sends a reference signal to the terminal device through the N fourth beams of the relay device, where the reference signal is used for the The terminal device performs beam measurement.

In a possible implementation manner, the network device sends reference signals to the terminal device through M third beams, and sends reference signals to the terminal device through the N fourth beams of the relay device. Signals, including:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends N reference signals, the second time slots corresponding to the N fourth beams, and beam identifiers to the relay device, so that the relay device passes through the reference signal resources corresponding to the second time slots The N fourth beams forward corresponding reference signals to the terminal device.

In a possible implementation manner, the network device sends reference signals to the terminal device through M third beams, and sends reference signals to the terminal device through the N fourth beams of the relay device. Signals, including:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a reference signal and a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends the reference signal corresponding to the N fourth beams, the second time slot, the beam identifier, and the reference signal resource configuration information to the relay device, so that the relay device determines N N fourth beams, and forward the corresponding reference signal to the terminal device through the N fourth beams on the reference signal resource corresponding to the second time slot. In a possible implementation manner, the network device determines M third beams in beams of the network device, and determines N fourth beams in beams of the relay device, including:

If the network device obtains the location of the terminal device, the network device obtains the location and beam capability of the relay device, and according to the location of the terminal device and the location and beam capability of the relay device determining the M third beams and the N fourth beams;

If the network device does not obtain the location of the terminal device, the network device determines all beams of the relay device as the N fourth beams.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

In a possible implementation manner, the R first beams are all or a part of the M third beams and the N fourth beams.

In a possible implementation manner, the beam information of the second beam is used to indicate a time slot corresponding to the second beam or a beam identifier of the second beam.

In the second aspect, the embodiment of the present application provides a data transmission device, including a receiving module, a first determining module, and a first sending module, wherein,

The receiving module is used for the network device to receive the measurement results of the R first beams sent by the terminal device, and the R first beams include the beams of the relay device;

The first determining module is configured to determine, by the network device, a second beam among the R first beams according to the measurement result;

The first sending module is configured to, if the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, and the beam information is used for Instructing the relay device to forward the data between the network device and the terminal device through the second beam.

In a possible implementation manner, before the receiving module, the data transmission device further includes a second determining module and a second sending module, wherein,

The second determining module is configured to determine, by the network device, M third beams in the beams of the network device, and determine N fourth beams in the beams of the relay device, the M and the Said N is an integer;

The second sending module is configured to send, by the network device, reference signals to the terminal device through M third beams, and send reference signals to the terminal device through the N fourth beams of the relay device. signal, and the reference signal is used by the terminal device to perform beam measurement.

In a possible implementation manner, the second sending module is specifically configured to:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends N reference signals to the relay device, and the N fourth beams correspond to The second time slot and beam identifier of the second time slot, so that the relay device forwards the corresponding reference signal to the terminal device through the N fourth beams on the reference signal resource corresponding to the second time slot.

In a possible implementation manner, the second sending module is specifically configured to:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a reference signal and a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends the reference signal corresponding to the N fourth beams, the second time slot, the beam identifier, and the reference signal resource configuration information to the relay device, so that the relay device determines N N fourth beams, and forward the corresponding reference signal to the terminal device through the N fourth beams on the reference signal resource corresponding to the second time slot.

In a possible implementation manner, the second determining module is specifically configured to:

If the network device obtains the location of the terminal device, the network device obtains the location and beam capability of the relay device, and according to the location of the terminal device and the location and beam capability of the relay device determining the M third beams and the N fourth beams;

If the network device does not obtain the location of the terminal device, the network device determines all beams of the relay device as the N fourth beams.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

In a possible implementation manner, the R first beams are all or a part of the M third beams and the N fourth beams.

In a possible implementation manner, the beam information of the second beam is used to indicate a time slot corresponding to the second beam or a beam identifier of the second beam. In a third aspect, the embodiment of the present application provides a data transmission network device, including a memory and a processor;

The memory is used to store computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the data transmission method as described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement any one of the first aspect. The data transfer method described in the item.

In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the data transmission method described in any one of the first aspect can be implemented.

Embodiments of the present application provide a data transmission method, device, device, and storage medium. The network device first receives the measurement results of the R first beams sent by the terminal device, and the R first beams include the beams of the relay device; then the network The device determines the second beam among the R first beams according to the measurement results. If the second beam is the beam of the relay device, the network device sends the beam information of the second beam to the relay device. The beam information is used to indicate the relay device The data between the network device and the terminal device is forwarded through the second beam. The network device may send beam information of the second beam to the relay device, so as to control the relay device to forward data between the network device and the terminal device in a directional manner, so as to reduce energy loss during data transmission.

In a sixth aspect, the embodiment of the present application provides a data transmission method, including:

The relay device receives the beam information of the second beam sent by the network device, where the beam information is used to indicate the time slot corresponding to the second beam or the beam identifier of the second beam;

The relay device forwards the data between the network device and the terminal device through the second beam according to the beam information.

In a possible implementation manner, before the relay device receives the beam information of the second beam sent by the network device, it further includes:

The relay device sends the beam capability of the relay device to the network device;

The relay device receives beam identities of N fourth beams sent by the network device, where the N fourth beam identities are determined by the network device according to the beam capability, and N is an integer;

The relay device receives the reference signal resource configuration information sent by the network device, and determines N fourth beams according to the reference signal resource configuration information;

The relay device receives the reference signal sent by the network device, and forwards the reference signal through the N fourth beams;

The relay device receives the second time slot corresponding to the N fourth beams sent by the network device, and forwards the corresponding reference signal to the terminal device on the reference signal resource corresponding to the second time slot.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

In the seventh aspect, the embodiment of the present application provides a data transmission device, including a receiving module and a forwarding module, wherein,

The receiving module is used for the relay device to receive the beam information of the second beam sent by the network device, where the beam information is used to indicate the time slot corresponding to the second beam or the beam identifier of the second beam;

The forwarding module is configured for the relay device to pass the second beam according to the beam information Forwarding data between the network device and the terminal device.

In a possible implementation manner, before the receiving module, the data transmission device further includes a sending module, and the sending module is configured to send, by the relay device, the beam of the relay device to the network device ability;

The receiving module can also be used for:

The relay device receives the beam identifications of the N fourth beams sent by the network equipment, and determines the N fourth beams according to the beam identifications; the identifications of the N fourth beams are the network equipment according to the beam identification The ability is determined, and the N is an integer;

The relay device receives the reference signal sent by the network device, and forwards the reference signal through the N fourth beams;

The relay device receives the second time slot corresponding to the N fourth beams sent by the network device, and forwards the corresponding reference signal to the terminal device on the reference signal resource corresponding to the second time slot.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

In an eighth aspect, the embodiment of the present application provides a data transmission relay device, including a memory and a processor;

The memory is used to store computer-executable instructions;

The processor executes the computer-executed instructions stored in the memory, so that the processor executes the data transmission method according to the sixth aspect.

In the ninth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, it is used to implement any one of the sixth aspects. The data transfer method described in the item.

In a tenth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the data transmission method described in any one of the sixth aspect can be implemented.

The embodiment of the present application provides a data transmission method, device, device, and storage medium. The relay device receives the beam information of the second beam sent by the network device, and according to the beam information, transmits data between the network device and the terminal device through the second beam. data is forwarded. The relay device can receive the instruction information from the network device, and forward the data between the network device and the terminal device according to the instruction information, so as to reduce energy loss during data transmission.

Description of drawings

FIG. 1 is a schematic flow diagram of downlink beam management in the related art;

FIG. 2A is a schematic diagram of beam scanning in the related art;

FIG. 2B is another schematic diagram of beam scanning in the related art;

FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a connection link between a relay device, a terminal device, and a network device provided in an embodiment of the present application;

FIG. 5 is a schematic flow diagram of a data transmission method provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the corresponding relationship between time slots and beams provided in the embodiment of the present application;

FIG. 7 is a schematic flowchart of another data transmission method provided by the embodiment of the present application;

FIG. 8 is a schematic diagram of beam scanning with the participation of a relay device provided in an embodiment of the present application;

FIG. 9A is a schematic structural diagram of a data transmission device provided by an embodiment of the present application;

FIG. 9B is a schematic structural diagram of another data transmission device provided by the embodiment of the present application;

FIG. 10 is a schematic structural diagram of a data transmission network device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another data transmission device provided in the embodiment of the present application;

FIG. 12 is a schematic structural diagram of a data transmission relay device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the embodiments of the application. Obviously, the described embodiments are part of the implementation of the application. example, not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

For ease of understanding, concepts involved in the embodiments of the present application are described first.

Network device: It is a device with wireless transceiver function. Including but not limited to: evolved base station (Evolutional Node B, eNB or eNodeB) in long term evolution (long term evolution, LTE), base station (gNodeB or gNB) or multiple transceiver nodes in new air interface technology (new radio, NR) (multi-transmission and receiving points, M-TRP), the base station in the subsequent evolution system, the access node in the wireless fidelity (wireless fidelity, WiFi) system, the wireless relay node, the wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations may support the aforementioned networks of the same technology, or may support the aforementioned networks of different technologies. A base station may contain one or more co-sited or non-co-sited TRPs.

Terminal device: It is a device with wireless transceiver function. Terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); Can be deployed in the air (such as aircraft, balloons and satellites, etc.). The terminal device may be a mobile phone, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, an industrial control ( Wireless terminals in industrial control, vehicle-mounted terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation safety Wireless terminal devices in (transportation safety), wireless terminal devices in smart cities, wireless terminal devices in smart homes, wearable terminal devices, etc. The terminal equipment involved in the embodiments of the present application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station , a remote user equipment, a mobile device, a wireless communication device, a UE proxy or a UE device, and the like. Terminal equipment can also be fixed or mobile.

Relay device: It is a device with wireless transceiver function. The network transmission distance can be extended by re-receiving or forwarding the data signal.

Reference Signal resource (Reference Signal resource, RS resource): One beam corresponds to one reference signal resource, and the reference signal resource can carry reference signals. For example, the resource used to transmit the Non Zero Power Channel State Information Reference Signal (NZP-CSI-RS) is the Non Zero Power Channel State Information Reference Signal Resource (Non Zero Power Channel State Information Reference Signal Resource , NZP-CSI-RS-Resource).

For ease of understanding, the downlink beam management process in the related art will be described below with reference to FIG. 1 .

FIG. 1 is a schematic flow diagram of downlink beam management in the related art. See Figure 1, including:

S101. The network device indicates to the terminal device the number of beams participating in beam scanning, the identifier of each beam, and the periodicity of beam measurement.

The specific process of beam scanning is: the network device will transmit in one direction on a specific reference signal resource, then transmit the beam in another direction on the next reference signal resource, and so on, until the network device can scan all the areas it should cover .

For ease of understanding, the process of beam scanning will be described below with reference to FIGS. 2A and 2B .

FIG. 2A is a schematic diagram of beam scanning in the related art. Referring to FIG. 2A , it is taken as an example that the beam on the network device side is fixed, and the beam polling on the terminal device side is all completed, and then a new network device side beam is switched for beam scanning. The number of sending beams of the network device is 3, which are respectively beam 1, beam 2 and beam 3; the number of receiving beams of the terminal device is 4, which are respectively beam a, beam b, beam c and beam d.

The network device transmits reference signal 1 corresponding to beam 1 at time t1, transmits reference signal 2 corresponding to beam 1 at time t2, transmits reference signal 3 corresponding to beam 1 at time t3, and transmits reference signal 3 corresponding to beam 1 at time t4 For the corresponding reference signal 4, the reference signal 5 corresponding to beam 2 is transmitted at time t5, the reference signal 6 corresponding to beam 2 is transmitted at time t6, the reference signal 7 corresponding to beam 2 is transmitted at time t7, and the reference signal corresponding to beam 2 is transmitted at time t8 Reference signal 8, transmit reference signal 9 corresponding to beam 3 at time t9, transmit reference signal 10 corresponding to beam 3 at time t10, transmit reference signal 11 corresponding to beam 3 at time t11, and transmit reference signal corresponding to beam 3 at time t12 12.

The terminal device uses beam a to receive reference signal 1 at time t1', uses beam b to receive reference signal 2 at time t2', uses beam c to receive reference signal 3 at time t3', and uses beam d to receive reference signal 4 at time t4', At time t5', beam a is used to receive reference signal 5, at time t6' beam b is used to receive reference signal 6, at time t7' beam c is used to receive reference signal 7, at time t8' beam d is used to receive reference signal 8, and at time t9 The reference signal 9 is received by beam a at time ', the reference signal 10 is received by beam b at time t10', the reference signal 11 is received by beam c at time t11', and the reference signal 12 is received by beam d at time t12', where t1'～ t12' has a fixed offset value relative to t1˜t12.

FIG. 2B is another schematic diagram of beam scanning in the related art. Please refer to FIG. 2B . The beam on the terminal device side is fixed, and the beam polling on the network device side is all completed, and then the new terminal device side beam is switched for beam scanning as an example. The number of sending beams of the network device is 3, which are respectively beam 1, beam 2 and beam 3; the number of receiving beams of the terminal device is 4, which are respectively beam a, beam b, beam c and beam d.

The network device transmits reference signal 1 corresponding to beam 1 at time t1, transmits reference signal 2 corresponding to beam 2 at time t2, transmits reference signal 3 corresponding to beam 3 at time t3, and transmits reference signal 4 corresponding to beam 1 at time t4, Send reference signal 5 corresponding to beam 2 at time t5, send reference signal 6 corresponding to beam 3 at time t6, send reference signal 7 corresponding to beam 1 at time t7, send reference signal 8 corresponding to beam 2 at time t8, and send reference signal 8 corresponding to beam 2 at time t9 The reference signal 9 corresponding to beam 3 is transmitted at time, the reference signal 10 corresponding to beam 1 is transmitted at time t10, the reference signal 11 corresponding to beam 2 is transmitted at time t11, and the reference signal 12 corresponding to beam 3 is transmitted at time t12.

The terminal device uses beam a to receive reference signal 1 at time t1', uses beam a to receive reference signal 2 at time t2', uses beam a to receive reference signal 3 at time t3', and uses beam b to receive reference signal 4 at time t4', At time t5', beam b is used to receive reference signal 5, at time t6' beam b is used to receive reference signal 6, at time t7' beam c is used to receive reference signal 7, at time t8' beam c is used to receive reference signal 8, at t9 The reference signal 9 is received by beam c at time ', the reference signal 10 is received by beam d at time t10', the reference signal 11 is received by beam d at time t11', and the reference signal 12 is received by beam d at time t12', where t1'～ t12' has a fixed offset value relative to t1˜t12.

S102. The network device sends K reference signals to the terminal device through the K beams.

Each reference signal corresponds to a specific beam, and the specific beam direction and beam width corresponding to each reference signal can be determined according to the corresponding network device and terminal device.

S103. The terminal device measures the signal quality of the reference signal on each beam, and reports the beam identifier and the measurement result of the R first beams with the best signal quality to the network device.

S104. The network device determines a second beam according to the reported R first beams, and instructs the terminal device to send and receive data on the reference signal resource corresponding to the second beam.

Fig. 1 illustrates the process of downlink beam management in the related art. The application scenario applicable to the embodiment of the present application will be described below with reference to FIG. 3 .

FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application. Referring to FIG. 3 , it includes a network device 301 , a relay device 302 and a terminal device 303 . The network device 301 may send data to the relay device 302 and the terminal device 303 in different directions through beams in different directions, and one beam may correspond to the relay device 302 or the terminal device 303 in one direction. The relay device 302 can direct forward the data between the network device 301 and the terminal device 303 . The terminal device 303 may also receive data sent by the network device 301 and the relay device 302 .

Based on cost, delay and complexity considerations, the relay device 302 will not decode the data between the network device 301 and the terminal device 303, that is, the relay device 302 only amplifies and forwards the data between the network device 301 and the terminal device 303 deal with. But the relay device 302 can receive the instruction information from the network device 301, and the relay device 302 can adjust the beam direction between the relay device 302 and the terminal device 303 according to the instruction information.

For ease of understanding, the connection link between the relay device, the terminal device and the network device will be described below with reference to FIG. 4 .

FIG. 4 is a schematic diagram of a connection link between a relay device, a terminal device, and a network device provided in an embodiment of the present application. Please refer to Figure 4, including link 1 and link 2.

Link 1 is an access link, which is used to link network devices, relay devices, and terminal devices. The data carried is data between network devices and terminal devices, including physical downlink sharing channel (Physical Downlink Sharing Channel, PDSCH), Physical Uplink Sharing Channel (PUSCH) and various reference signals. The relay device does not perform decoding processing on the data transmitted on the link 1, but only performs amplification and forwarding processing.

Link 2 is a fronthaul link, which is used to link the network device and the relay device, and carries data between the network device and the relay device, including control data from the network device to the relay device. Control data from the network device to the relay device may be transmitted through the link 2 to instruct some behaviors of the relay device. For example, The beam information and the beam capability of the relay device can be transmitted through the fronthaul link.

In related technologies, the relay device amplifies and forwards the data between the network device and the terminal device in all directions, which increases energy loss during data transmission. In Release 18 of 3GPP, the concept of intelligent relay equipment and network-controlled relay equipment is proposed. It is hoped that the relay equipment can forward or send data according to the instructions of the network equipment based on the information of the terminal equipment, so as to reduce the data transmission process. energy loss. However, the Release 18 version does not specify how to control the relay device to realize the directional reception or forwarding of data.

In order to solve the above technical problems, the embodiment of the present application provides a solution for the network device to control the relay device to forward or send data in a directional manner. Specifically, the network device sends the beam information of the second beam to the relay device, and the relay device directs the data according to the beam information. Forward data between network equipment and terminal equipment to reduce energy loss during data transmission and control relay equipment to forward data between network equipment and terminal equipment in order to reduce energy loss during data transmission energy loss.

In the following, the technical solutions shown in this application will be described through specific embodiments. It should be noted that the following embodiments may exist independently or be combined with each other, and the same or similar content will not be repeated in different embodiments.

FIG. 5 is a schematic flowchart of a data transmission method provided by an embodiment of the present application. See Figure 5, the method can include:

S501. The terminal device sends the measurement results of the R first beams to the network device.

R can be an integer between 1 and 4.

The R first beams include beams of the relay device.

The measurement result of the multiple beams may be to measure the signal quality of the reference signal on the multiple beams.

The signal quality may be Reference Signal Received Power (Reference Signal Receiving Power, RSRP).

Before the terminal device sends the measurement results of the R first beams, it needs to measure the signal quality of the reference signals corresponding to all the beams participating in the beam scanning, and select the R beams with the best signal quality as the first beams.

For example, the number of beams participating in the beam scanning is 12, the terminal device measures the signal quality of the reference signals corresponding to the 12 beams, and selects the 3 beams with the highest signal quality as the first beams.

The measurement result may include the number of beams, the signal quality of the beams, and the identification of the beams.

For example, the measurement result may be: 2 beams, beam 1 and beam 2, the signal quality of beam 1 is RSRP1, and the signal quality of beam 2 is RSRP2.

S502. The network device determines a second beam among the R first beams according to the measurement result.

The second beam may be the one with the highest signal quality in the first beam, or it may not be the one with the highest signal quality in the first beam, which can be judged in the following way:

If the network device can determine that no other terminal device uses the R first beams according to beam usage by other terminal devices, then the network device determines the first beam with the highest signal quality as the second beam according to the measurement result.

For example, the terminal device sends the measurement results of two beams with the highest signal quality to the network device, the measurement results include two beams, beam 1 and beam 2, the signal quality of beam 1 is RSRP1, and the signal quality of beam 2 is RSRP2, where , RSRP1>RSRP2. The network device knows from the use of beams by other terminal devices that no other terminal device uses beam 1 and beam 2, and the network device determines beam 1 as the second beam.

If the network device can determine that other terminal devices use S beams in the R first beams (R>S) according to the beam usage of other terminal devices, then the network device will use the (R-S) beams according to the measurement results The first beam with the highest signal quality among the beams is determined as the second beam.

For example, the terminal device sends the measurement results of two beams with the highest signal quality to the network device, the measurement results include two beams, beam 1 and beam 2, the signal quality of beam 1 is RSRP1, and the signal quality of beam 2 is RSRP2, where , RSRP1>RSRP2. The network device knows from the use of beams by other terminal devices that beam 1 has been used by other terminal devices, and the network device determines beam 2 as the second beam.

S503. If the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device.

The beam information is used to instruct the relay device to forward the data between the network device and the terminal device through the second beam.

The beam information of the second beam may be a time slot corresponding to the second beam, and may also be an identifier of the second beam.

For ease of understanding, the correspondence between time slots and beams will be described below with reference to FIG. 6 .

FIG. 6 is a schematic diagram of a correspondence relationship between time slots and beams provided in an embodiment of the present application. Please refer to Figure 6, including 6 beams and 6 time slots. The 6 beams are the beams participating in the beam scanning, namely beam 1, beam 2, beam 3, beam 4, beam 5 and beam 6. The 6 time slots are the corresponding time slots of the beams participating in the beam scanning, which are respectively time slot 1 , slot 2, slot 3, slot 4, slot 5, and slot 6. Wherein, beam 1 corresponds to time slot 1, beam 2 corresponds to time slot 2, beam 3 corresponds to time slot 3, beam 4 corresponds to time slot 4, beam 5 corresponds to time slot 5, and beam 6 corresponds to time slot 6. When performing beam scanning, the network device sends beam 1 in a specific direction on the reference signal resource corresponding to time slot 1, and then transmits beam 1 in a specific direction on the reference signal resource corresponding to time slot 2. The source sends beam 2 in a specific direction, and so on, and finally sends beam 6 in a specific direction on the reference signal resource corresponding to time slot 6 .

S504. The relay device forwards the data between the network device and the terminal device through the second beam according to the beam information.

During the forwarding process, the relay device will not decode the data.

On the basis of the embodiment shown in Figure 6, if beam 4 and beam 5 among the six beams are the beams of the relay device, beam 4 is finally determined as the second beam, and the relay device uses the reference signal resource corresponding to time slot 4 Data forwarding via beam 4.

In the embodiment shown in FIG. 5, the network device first receives the measurement results of the R first beams sent by the terminal device; and then determines the second beam among the R first beams according to the measurement results; if the second beam is The beam of the relay device, the network device sends the beam information of the second beam to the relay device; the relay device forwards the data between the network device and the terminal device through the second beam according to the beam information. The embodiment shown in Figure 5 provides a specific solution for the network device to control the relay device to forward or send data, that is, the network device can send the beam information of the second beam to the relay device to control the relay device to direct the network device and the terminal Data between devices is forwarded to reduce energy loss during data transmission.

On the basis of any of the foregoing embodiments, the foregoing data transmission method will be described in detail below in conjunction with the embodiment shown in FIG. 7 .

FIG. 7 is a schematic flowchart of another data transmission method provided by the embodiment of the present application. Referring to Figure 7, the method may include:

S701. The relay device sends the beam capability of the relay device to the network device.

The beam capability includes the maximum number of beams and the coverage of the relay device.

The maximum number of beams can be the maximum number of non-zero power Channel State Information Reference Signal Resources (Non zero power Channel State Information Reference Signal Resource, NZP-CSI-RS-Resource), or the maximum channel state information synchronization signal block resource ( Channel State Information Synchronization Signal and PBCH block Resource, CSI-SSB-Resource) number.

S702. The network device determines M third beams in the beams of the network device, and determines N fourth beams in the beams of the relay device.

M and N are integers, and M and N are not 0 at the same time.

The network device may determine M third beams in the beams of the network device, and determine N fourth beams in the beams of the relay device in the following manner:

If the network device obtains the location of the terminal device, the network device obtains the The location and beam capability of the relay device, and determining the M third beams and the N fourth beams according to the location of the terminal device and the location and beam capability of the relay device;

If the network device does not obtain the location of the terminal device, the network device determines all beams of the relay device as the N fourth beams.

For ease of understanding, the process for the network device to determine the number of beams participating in beam scanning will be described below with reference to FIG. 8 .

FIG. 8 is a schematic diagram of beam scanning with the participation of a relay device provided in an embodiment of the present application. See Figure 8. The network device has five beams, which are beam 1, beam 2, beam 3, beam 4, and beam 5, and the relay device has six beams, which are beam a, beam b, beam c, beam d, beam e, and beam f.

If the network device obtains prior information such as the location of the terminal device, the network device obtains the location and beam capability of the relay device, and determines the beam 1, beam 2 and beam according to the location of the terminal device and the location and beam capability of the relay device. 3 as the third beam, and beam a, beam b and beam c as the fourth beam.

If the network device has no relevant prior information, the network device regards beam 1, beam 2, beam 3, beam 4 and beam 5 as the third beam, and regards beam a, beam b, beam c, beam d, beam e and beam f as the fourth beam. The terminal device cannot distinguish whether the beam is the beam of the relay device or the beam of the base station. For the terminal device, the beam corresponding to the reference signal it can receive is the beam of the base station. Therefore, from the perspective of the terminal device, The base station determines a total of eleven beams including beam 1, beam 2, beam 3, beam a, beam b, beam c, beam d, beam e, beam f, beam 4, and beam 5 for beam scanning.

After the network device determines N fourth beams in the beams of the relay device, it needs to send the number of beams participating in beam scanning, the moment when the beams of the relay device start scanning, and the periodicity of beam measurement to the relay device.

S703. The network device sends the reference signal to the terminal device through the M third beams, and sends the reference signal to the terminal device through the N fourth beams of the relay device.

The reference signal is used by the terminal equipment for beam measurement.

A corresponding relationship can be established between each beam and the reference signal to be sent by the beam, for example, beam 1 sends the reference signal RS 1 .

Each beam can establish a corresponding relationship with the resource that sends the corresponding reference signal. For example, beam 1 is sent on the reference signal resource RS Resource 1, and carries the corresponding reference signal RS 1.

The corresponding relationship between beams and reference signal resources can be established through network equipment, and can also be established through relay equipment.

The reference signal can be sent according to the following two situations:

Case 1: The relay device establishes a relationship between the fourth beam and the reference signal resource.

Specifically, the reference signal is sent in the following manner: the network device determines the reference signal and the first time slot corresponding to each third beam, and determines the second time slot corresponding to each fourth beam; the network device at the first time The corresponding reference signal is sent through the M third beams on the reference signal resource corresponding to the slot; the network device sends N reference signals to the relay device, and the second time slot corresponding to the N fourth beams and beam identifiers, so that the relay device forwards the corresponding reference signal to the terminal device through the N fourth beams on the reference signal resource corresponding to the second time slot.

For example, the network device first determines three third beams, which are respectively beam 1, beam 2 and beam 3; determine the reference signals and time slots of the three third beams, beam 1 corresponds to reference signal RS 1 and time slot 1, and beam 2 Corresponding to reference signal RS 2 and time slot 2, beam 3 corresponds to reference signal RS 3 and time slot 3; and determine the time slots corresponding to the three fourth beams, namely time slot A, time slot B and time slot C. The network device sends a reference signal RS 1 to the terminal device through beam 1 on the reference signal resource RS Resource 1 corresponding to time slot 1, and sends a reference signal RS to the terminal device through beam 2 on the reference signal resource RS Resource 2 corresponding to time slot 2 2. Send the reference signal RS 3 to the terminal device on the reference signal resource RS Resource 3 corresponding to the time slot 3 through the beam 3. The network device sends 3 reference signals (reference signals RS A, RS B and RS C) and 3 time slots corresponding to the fourth beam to the relay device, and the relay device selects three beams ( Beam C, beam F, and beam T) correspond to three reference signals. On the reference signal resource corresponding to time slot A, RS Resource C sends reference signal RS A to the terminal device through beam C, and on the reference signal resource corresponding to time slot B RS Resource F transmits reference signal RS B to terminal equipment through beam F, and transmits reference signal RS C to terminal equipment through beam T on reference signal resource RS Resource T corresponding to time slot C.

Case 2: The network device establishes a relationship between the fourth beam and the reference signal resource, or the network device and the relay device establish the same relationship between the fourth beam and the reference signal resource.

Specifically, the reference signal is sent in the following manner: the network device determines the reference signal and the first time slot corresponding to each third beam, and determines the reference signal and the second time slot corresponding to each fourth beam; The corresponding reference signal is sent through the M third beams on the reference signal resource corresponding to the first time slot; the network device sends the reference signal corresponding to the N fourth beams to the relay device, and the second time slot Slots, beam identifiers, and reference signal resource configuration information, so that the relay device determines N fourth beams according to the beam identifiers, and transmits information to the terminal through the N fourth beams on the reference signal resources corresponding to the second time slot The device forwards the corresponding reference signal.

The beam identifier can be an identifier of a reference signal resource, specifically, it can be a channel state information reference signal An identifier (Channel State Information Reference Signal Resource Indicator, CRI), or a synchronization signal block identifier (Synchronization Signal and PBCH block Resource Indicator, SSBRI).

The reference signal resource configuration information may be used to configure how to send the corresponding reference signal, including information such as time-frequency resource location, power control offset, and scrambling identifier used for sending the reference signal.

For example, the network device first determines three third beams, which are respectively beam 1, beam 2 and beam 3; determine the reference signals and time slots corresponding to the three third beams, beam 1 corresponds to reference signal RS 1 and time slot 1, and beam 2 corresponds to reference signal RS 2 and time slot 2, and beam 3 corresponds to reference signal RS 3 and time slot 3; and determine three fourth beams, namely beam A, beam B and beam C, and then determine three fourth beams corresponding to Beam A corresponds to reference signal RS A and time slot A, beam B corresponds to reference signal RS B and time slot B, and beam C corresponds to reference signal RS C and time slot C. The network device sends a reference signal RS 1 to the terminal device through beam 1 on the reference signal resource RS Resource 1 corresponding to time slot 1, and sends a reference signal RS to the terminal device through beam 2 on the reference signal resource RS Resource 2 corresponding to time slot 2 2. Send the reference signal RS 3 to the terminal device on the reference signal resource RS Resource 3 corresponding to the time slot 3 through the beam 3. The network device sends the reference signals, time slots and beam identifiers (A, B, C) corresponding to the three fourth beams to the relay device; the relay device determines the beam A and beam B for sending the reference signal according to the reference signal resource configuration information Specific resource configuration corresponding to beam C, including time-frequency domain mapping information, power control information, scrambling identification, etc., and sending reference signal RS A to terminal equipment through beam A on the reference signal resource RS Resource A corresponding to time slot A , on the reference signal resource RS Resource B corresponding to time slot B, the reference signal RS B is sent to the terminal device through beam B, and on the reference signal resource RS Resource C corresponding to time slot C, the reference signal RS C is sent to the terminal device through beam C .

S704. The terminal device measures the signal quality of the reference signals corresponding to the M third beams and the N fourth beams, and determines the R beams with the highest signal quality as the first beams.

The R first beams are all or part of the M third beams and the N fourth beams.

For example, the terminal device measures the signal quality of the reference signals corresponding to the 4 third beams and the 4 fourth beams, and then determines the 3 beams with the highest signal quality as the first beams.

After the first beam is determined, the beam identifier of the first beam may be set.

S705. The terminal device sends the measurement results of the R first beams to the network device.

It should be noted that for the execution process of S705, reference may be made to the execution process of S501, which will not be repeated here.

S706. The network device determines a second beam among the R first beams according to the measurement result.

It should be noted that for the execution process of S706, reference may be made to the execution process of S502, which will not be repeated here.

S707. If the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device.

It should be noted that for the execution process of S707, reference may be made to the execution process of S503, which will not be repeated here.

S708. The relay device forwards the data between the network device and the terminal device through the second beam according to the beam information.

It should be noted that for the execution process of S708, reference may be made to the execution process of S504, which will not be repeated here.

In the embodiment shown in FIG. 7, the relay device first sends the beam capability of the relay device to the network device; the network device determines M third beams in the beam of the network device, and determines N beams in the beam of the relay device. the fourth beam; the network device sends reference signals to the terminal device through the M third beams, and sends reference signals to the terminal device through the N fourth beams of the relay device; the terminal device measures the M third beams and the Nth beams For the signal quality of the reference signal corresponding to the four beams, determine the R beams with the highest signal quality as the first beam; the terminal device sends the measurement results of the R first beams to the network device, and the network device receives the R beams sent by the terminal device. A measurement result of a beam; the network device determines a second beam among the R first beams according to the measurement result; if the second beam is the beam of the relay device, the network device sends the beam of the second beam to the relay device information; the relay device forwards the data between the network device and the terminal device through the second beam according to the beam information. The embodiment shown in Figure 7 provides a specific solution for the network device to control the relay device to forward or send data, that is, the network device can send the beam information of the second beam to the relay device to control the relay device to direct the network device and the terminal Data between devices is forwarded to reduce energy loss during data transmission.

The embodiments shown in FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 all describe a downlink data transmission process. If it is an uplink data transmission process, the network equipment is used to measure the beams participating in the beam scanning only during the beam measurement, and the network equipment selects a beam as the second beam, and sends the beam information of the second beam to the center For other processes, please refer to the downlink data transmission process.

FIG. 9A is a schematic structural diagram of a data transmission device provided by an embodiment of the present application. Referring to FIG. 9A, the data transmission device 10 includes a receiving module 11, a first determining module 12 and a first sending module 13, wherein,

The receiving module 11 is used for the network device to receive the measurements of the R first beams sent by the terminal device. As a result of the measurement, the R first beams include a beam of a relay device;

The first determination module 12 is configured to determine, by the network device, a second beam among the R first beams according to the measurement result;

The first sending module 13 is configured to, if the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, and the beam information is used for Instructing the relay device to forward the data between the network device and the terminal device through the second beam.

FIG. 9B is a schematic structural diagram of another data transmission device provided by an embodiment of the present application. Please refer to FIG. 9B, before the receiving module 11, the data transmission device 10 further includes a second determining module 14 and a second sending module 15, wherein,

The second determination module 14 is configured to determine, by the network device, M third beams in the beams of the network device, and determine N fourth beams in the beams of the relay device, the M and The N is an integer;

The second sending module 15 is configured to: the network device sends a reference signal to the terminal device through the M third beams, and sends a reference signal to the terminal device through the N fourth beams of the relay device A reference signal, where the reference signal is used by the terminal device to perform beam measurement.

In a possible implementation manner, the second sending module 15 is specifically configured to:

The network device sending a reference signal to the terminal device through the M third beams, and sending the reference signal to the terminal device through the N fourth beams of the relay device includes:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends N reference signals, the second time slots corresponding to the N fourth beams, and beam identifiers to the relay device, so that the relay device passes through the reference signal resources corresponding to the second time slots The N fourth beams forward corresponding reference signals to the terminal device.

In a possible implementation manner, the second sending module 15 is specifically configured to:

The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a reference signal and a second time slot corresponding to each fourth beam;

The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot;

The network device sends to the relay device the reference signals corresponding to the N fourth beams, the first Two time slots, beam identifiers, and reference signal resource configuration information, so that the relay device determines N fourth beams according to the reference signal resource configuration information, and passes the N fourth beams on the reference signal resources corresponding to the second time slot. The beam forwards the corresponding reference signal to the terminal device.

In a possible implementation manner, the second determining module 14 is specifically configured to:

If the network device obtains the location of the terminal device, the network device obtains the location and beam capability of the relay device, and according to the location of the terminal device and the location and beam capability of the relay device determining the M third beams and the N fourth beams;

If the network device does not obtain the location of the terminal device, the network device determines all beams of the relay device as the N fourth beams.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

In a possible implementation manner, the R first beams are all or a part of the M third beams and the N fourth beams.

In a possible implementation manner, the beam information of the second beam is used to indicate a time slot corresponding to the second beam or a beam identifier of the second beam.

FIG. 10 is a schematic structural diagram of a data transmission network device provided by an embodiment of the present application. Referring to FIG. 10 , the data transmission network device 20 may include: a transceiver 21 , a memory 22 , and a processor 23 . The transceiver 21 may include: a transmitter and/or a receiver. The transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions, and the receiver may also be called a receiver, a receiving port, or a receiving interface, or similar descriptions. Exemplarily, the transceiver 21 , the memory 22 , and the processor 23 are connected to each other through a bus 24 .

The memory 22 is used to store program instructions;

The processor 23 is configured to execute the program instructions stored in the memory, so as to make the data transmission network device 20 execute any one of the data transmission methods shown above.

The transceiver 21 is used for performing the transceiving function of the data transmission network device 20 in the data transmission method.

The data transmission network device 20 may be a chip, a module, an integrated development environment (Integrated Development Environment, IDE), etc.

FIG. 11 is a schematic structural diagram of another data transmission device provided by an embodiment of the present application. Please refer to FIG. 11, the data transmission device 30 may include a receiving module 31 and a forwarding module 32, wherein,

The receiving module 31 is used for the relay device to receive the beam information of the second beam sent by the network device, where the beam information is used to indicate the time slot corresponding to the second beam or the beam identifier of the second beam;

The forwarding module 32 is configured to, the relay device passes the second wave according to the beam information The beam forwards the data between the network device and the terminal device.

In a possible implementation manner, before the receiving module 31, the data transmission device 30 further includes a sending module 33, and the sending module 33 is configured to send the middle The beam capability of the relay equipment;

The receiving module 31 can also be used for:

The relay device receives beam identities of N fourth beams sent by the network device, where the N fourth beam identities are determined by the network device according to the beam capability, and N is an integer;

The relay device receives the reference signal resource configuration information sent by the network device, and determines N fourth beams according to the reference signal resource configuration information;

The relay device receives the reference signal sent by the network device, and forwards the reference signal through the N fourth beams;

The relay device receives the second time slot corresponding to the N fourth beams sent by the network device, and forwards the corresponding reference signal to the terminal device on the reference signal resource corresponding to the second time slot.

In a possible implementation manner, the beam capability includes a maximum number of beams and a coverage area of the relay device.

FIG. 12 is a schematic structural diagram of a data transmission relay device provided by an embodiment of the present application. Referring to FIG. 12 , the data transmission relay device 40 may include: a transceiver 41 , a memory 42 , and a processor 23 . The transceiver 41 may include: a transmitter and/or a receiver. The transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions, and the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions. Exemplarily, the transceiver 41 , the memory 42 , and the processor 43 are connected to each other through a bus 44 .

The memory 42 is used to store program instructions;

The processor 43 is configured to execute the program instructions stored in the memory, so as to make the data transmission relay device 40 execute any one of the data transmission methods shown above.

The transceiver 41 is configured to perform the transceiving function of the data transmission relay device 40 in the above data transmission method.

The data transmission relay device 40 may be a chip, a module, an IDE, and the like.

An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing data transmission method is implemented.

An embodiment of the present application may further provide a computer program product, which may be executed by a processor, and when the computer program product is executed, any data transmission method shown above may be implemented.

The data transmission device, data transmission network equipment, data transmission relay equipment, computer-readable storage medium, and computer program product of the embodiments of the present application can implement the technical solutions shown in the above-mentioned data transmission method embodiments, its implementation principles and beneficial effects Similar, and will not be repeated here.

All or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a readable memory. When the program is executed, it executes the steps comprising the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (read-only memory, ROM), random access memory (Random Access Memory, RAM), Flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

Embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processing unit of other programmable data processing equipment to produce a machine such that the instructions executed by the processing unit of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, if the modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

In this application, the term "include" and its variants may mean non-limiting inclusion; the term "or" and its variants may mean "and/or". The terms "first", "second", etc. in this application are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence. In this application, "plurality" refers to two or two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

Claims (16)

A data transmission method, characterized in that, comprising: The network device receives the measurement results of the R first beams sent by the terminal device, where the R first beams include beams of the relay device; The network device determines a second beam among the R first beams according to the measurement result; If the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, and the beam information is used to instruct the relay device to pass through the relay device. The second beam forwards the data between the network device and the terminal device. The method according to claim 1, wherein before the network device receives the measurement results of the R first beams sent by the terminal device, it further includes: The network device determines M third beams in the beams of the network device, and determines N fourth beams in the beams of the relay device, and the M and the N are integers; The network device sends a reference signal to the terminal device through the M third beams, and sends a reference signal to the terminal device through the N fourth beams of the relay device, where the reference signal is used for the The terminal device performs beam measurement. The method according to claim 2, wherein the network device sends reference signals to the terminal device through the M third beams, and sends reference signals to the terminal device through the N fourth beams of the relay device. Terminal equipment sends reference signals, including: The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a second time slot corresponding to each fourth beam; The network device sends the corresponding reference signal through the M third beams on the reference signal resource corresponding to the first time slot; The network device sends N reference signals, the second time slots corresponding to the N fourth beams, and beam identifiers to the relay device, so that the relay device passes through the reference signal resources corresponding to the second time slots The N fourth beams forward corresponding reference signals to the terminal device. The method according to claim 2, wherein the network device sends reference signals to the terminal device through the M third beams, and sends reference signals to the terminal device through the N fourth beams of the relay device. Terminal equipment sends reference signals, including: The network device determines a reference signal and a first time slot corresponding to each third beam, and determines a reference signal and a second time slot corresponding to each fourth beam; The network device uses the M third wave on the reference signal resource corresponding to the first time slot The beam sends the corresponding reference signal; The network device sends the reference signal corresponding to the N fourth beams, the second time slot, the beam identifier, and the reference signal resource configuration information to the relay device, so that the relay device determines N N fourth beams, and forward the corresponding reference signal to the terminal device through the N fourth beams on the reference signal resource corresponding to the second time slot. The method according to claim 3 or 4, wherein the network device determines M third beams among the beams of the network device, and determines N fourth beams among the beams of the relay device ,include: If the network device obtains the location of the terminal device, the network device obtains the location and beam capability of the relay device, and according to the location of the terminal device and the location and beam capability of the relay device determining the M third beams and the N fourth beams; If the network device does not obtain the location of the terminal device, the network device determines all beams of the relay device as the N fourth beams. The method according to claim 5, wherein the beam capability includes the maximum number of beams and coverage of the relay device. The method according to any one of claims 3-6, wherein the R first beams are all or part of the M third beams and the N fourth beams. The method according to any one of claims 1-7, wherein the beam information of the second beam is used to indicate a time slot corresponding to the second beam or a beam identifier of the second beam. A data transmission method, characterized in that, comprising: The relay device receives the beam information of the second beam sent by the network device, where the beam information is used to indicate the time slot corresponding to the second beam or the beam identifier of the second beam; The relay device forwards the data between the network device and the terminal device through the second beam according to the beam information. The method according to claim 9, wherein before the relay device receives the beam information of the second beam sent by the network device, further comprising: The relay device sends the beam capability of the relay device to the network device; The relay device receives beam identities of N fourth beams sent by the network device, where the N fourth beam identities are determined by the network device according to the beam capability, and N is an integer; The relay device receives the reference signal resource configuration information sent by the network device, and determines N fourth beams according to the reference signal resource configuration information; The relay device receives the reference signal sent by the network device, and uses the N fourth beams forwarding the reference signal; The relay device receives the second time slot corresponding to the N fourth beams sent by the network device, and forwards the corresponding reference signal to the terminal device on the reference signal resource corresponding to the second time slot. The method according to claim 10, wherein the beam capability includes the maximum number of beams and coverage of the relay device. A data transmission device, characterized in that it includes a receiving module, a determining module, and a sending module, wherein, The receiving module is used for the network device to receive the measurement results of the R first beams sent by the terminal device, and the R first beams include the beams of the relay device; The determining module is configured to determine, by the network device, a second beam among the R first beams according to the measurement result; The sending module is configured to, if the second beam is a beam of the relay device, the network device sends beam information of the second beam to the relay device, and the beam information is used to indicate the beam information of the relay device. The relay device forwards the data between the network device and the terminal device through the second beam. A data transmission device, characterized in that it includes a receiving module and a forwarding module, wherein, The receiving module is used for the relay device to receive the beam information of the second beam sent by the network device, where the beam information is used to indicate the time slot corresponding to the second beam or the beam identifier of the second beam; The forwarding module is configured to forward, by the relay device, the data between the network device and the terminal device through the second beam according to the beam information. A data transmission device, characterized in that it includes: a memory, a processor; The memory is used to store computer-executable instructions; The processor executes the computer-executed instructions stored in the memory, so that the processor executes the data transmission method according to any one of claims 1-8 or the data transmission method according to any one of claims 9-11 . A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement any one of claims 1-8 The data transmission method or the data transmission method described in any one of claims 9-11. A computer program product, characterized in that it includes a computer program, and when the computer program is executed by a processor, it can implement the data transmission method described in any one of claims 1-8 or the data transmission method described in any one of claims 9-11. The data transmission method described above.