WO2022068612A1

WO2022068612A1 - Uplink coordinated transmission method and apparatus

Info

Publication number: WO2022068612A1
Application number: PCT/CN2021/119023
Authority: WO
Inventors: 张鹏; 许华
Original assignee: 华为技术有限公司
Priority date: 2020-09-30
Filing date: 2021-09-17
Publication date: 2022-04-07
Also published as: CN114337736A

Abstract

The present application provides an uplink coordinated transmission method and apparatus, applicable to systems such as Internet of vehicles, V2X, and V2V. In the method, a second terminal device may receive first control information from a network device, the first control information being used for indicating a transport block (TB) of a first terminal device cached by the second terminal device, and further, the second terminal device may send the TB of the first terminal device. In embodiments of the present application, the TB sent by the second terminal device and the TB sent by the first terminal device are the same, thereby reducing interference between the second terminal device and the first terminal device, and improving the receiving performance of the network device for the TB of the first terminal device.

Description

A kind of uplink cooperative transmission method and device

This application claims the priority of the Chinese patent application filed on September 30, 2020 with the application number 2020110564364 and titled "An Uplink Cooperative Transmission Method and Device", the entire contents of which are incorporated herein by reference Applying.

technical field

The present application relates to the field of communication technologies, and in particular, to an uplink cooperative transmission method and device thereof.

Background technique

With the development of the services supported by wireless communication systems from the initial voice and short messages to supporting wireless high-speed data communication, the next-generation wireless communication systems, such as the 5th-generation (5G) system, have proposed higher requirements. In order to improve the capacity of the communication system and the coverage of the network, user cooperation technology has become one of the main features supported by the next generation communication system. For example, the first terminal device and the second terminal device use a loosely coupled uplink multi-user multiple-input multiple-output (multi-user multiple-input multiple-output, MU-MIMO) manner to perform uplink cooperative transmission.

However, in the MU-MIMO uplink cooperative transmission mode, since the transport blocks (transport blocks, TB) transmitted by the first terminal device and the second terminal device are different, the TBs transmitted by the respective terminal devices will interfere with each other, thereby causing the first terminal device to transmit different transport blocks (TBs). There is interference between the device and the second terminal device, resulting in poor performance of the network device in receiving the TBs sent by the first terminal device and the second terminal device respectively.

SUMMARY OF THE INVENTION

The present application provides an uplink cooperative transmission method and device thereof, which can be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X) communication, vehicle-to-vehicle communication long term evolution-vehicle (LTE-V) , vehicle-to-vehicle (V2V) communication, etc., or can be used in intelligent driving, intelligent networked vehicles and other fields. The interference between the device and the first terminal device improves the reception performance of the transport block by the network device.

In a first aspect, the present application provides an uplink cooperative transmission method. In this method, the second terminal device is a terminal device that assists the first terminal device in sending the transport block TB, the second terminal device receives first control information from the network device, and the first control information is used to indicate the first control information cached by the second terminal device. The transport block TB of a terminal device, whereby the second terminal device transmits the TB of the first terminal device.

It can be seen that, in the embodiment of the present application, the TB sent by the second terminal device is the TB of the first terminal device cached by the second terminal device, that is, the second terminal device and the first terminal device send the same TB, which is beneficial to reduce the second terminal device. The interference between the terminal device and the first terminal device improves the reception performance of the TB by the network device.

In an optional implementation manner, the method further includes: the second terminal device receives second control information from the network device, where the second control information is used to instruct the second terminal device to send the scrambling code of the TB ( scrambling sequence). That is to say, the scrambling code indicated by the second control information is the same as the scrambling code used by the first terminal device to send the TB, so that the second terminal device and the first terminal device use the same scrambling code to generate the physical uplink shared channel The PUSCH is used to send the TB, which can reduce the interference between the second terminal device and the first terminal device, and improve the reception performance of the network device to the TB of the first terminal device.

In an optional implementation manner, the receiving, by the second terminal device, the first control information from the network device includes: receiving, by the second terminal device, the first control information from the network device through multicast or unicast.

In an optional implementation manner, the first control information received through multicast is obtained by using a first wireless network temporary identifier RNTI, where the first RNTI is used to indicate the first RNTI cached by the second terminal device the TB of the terminal device. It can be seen that if the second terminal device obtains the first control information by using the first RNTI, it indicates that the second terminal device receives the first control information through multicast.

In another optional implementation manner, the first control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, where the second RNTI is used to indicate the first control information cached by the second terminal device The TB of a terminal device. It can be seen that if the second terminal device obtains the first control information by using the second RNTI, it indicates that the second terminal device receives the first control information through unicast.

In an optional implementation manner, the first control information includes a preset value of a bit field, and the preset value is used to indicate the TB of the first terminal device cached by the second terminal device; or, The preset value corresponds to the TB of the first terminal device cached by the second terminal device.

In another optional implementation manner, the first control information includes a preset HARQ process number of the HARQ request, and the HARQ process number is used to indicate the first terminal buffered by the second terminal device The TB of the device; or, the HARQ process number corresponds to the TB of the first terminal device cached by the second terminal device.

In an implementation manner, the HARQ process number is configured by the network device through radio resource control RRC signaling.

In this embodiment of the present application, the implementation of the first control information may include, but is not limited to, any of the foregoing implementations. The optional first control information implementations may also be combined with each other to indicate one of the TBs of the first terminal device cached by the second terminal device, thereby facilitating flexible selection of an indication manner of the first control information.

In a second aspect, the present application further provides an uplink coordinated transmission method, the uplink coordinated transmission method in this aspect corresponds to the uplink coordinated transmission method described in the first aspect, and the uplink coordinated transmission method in this aspect is described from the network device side of. In this method, the network device determines the first control information, sends the first control information to the second terminal device, and then receives the transport block TB from the second terminal device. Wherein, the first control information is used to indicate the transmission block TB of the first terminal device cached by the second terminal device, so that the manner in which the network device sends the first control information to the second terminal device is conducive to the sending of the second terminal device The TB of the first terminal device, that is, the TB sent by the second terminal device is the same as the TB sent by the first terminal device, which is beneficial to reduce the interference between the second terminal device and the first terminal device and improve the reception performance of the network device.

In an optional implementation manner, the method further includes: the network device determines second control information, and sends the second control information to the second terminal device. The second control information is used to instruct the second terminal device to send the scrambling code of the TB, and the scrambling code indicated by the second control information is the same as the scrambling code used by the first terminal device to send the TB, so the first The second terminal equipment and the first terminal equipment use the same scrambling code to generate the physical uplink shared channel PUSCH to transmit the TB, which can reduce the interference between the second terminal equipment and the first terminal equipment, and improve the network equipment to the first terminal equipment. TB reception performance.

In an optional implementation manner, the sending, by the network device, the first control information to the second terminal device includes: the network device sending the second terminal device the all information through multicast or unicast. Describe the first control information. If the network device sends the first control information to the second terminal device through multicast, it is beneficial to reduce the signaling overhead of the network device.

In an optional implementation manner, the first control information sent through multicast is obtained by using a first wireless network temporary identifier RNTI, where the first RNTI is used to indicate the first the TB of the terminal device. It can be seen that if the network device obtains the first control information by using the first RNTI, it indicates that the network device sends the first control information to the second terminal device through multicast.

In another optional implementation manner, the first control information sent through unicast is obtained by using a second wireless network temporary identifier RNTI, where the second RNTI is used to indicate the first control information cached by the second terminal device The TB of a terminal device. It can be seen that if the network device obtains the first control information by using the second RNTI, it indicates that the network device sends the first control information to the network device through unicast.

In another optional implementation manner, the first control information includes a preset value of a bit field, and the preset value is used to indicate the TB of the first terminal device cached by the second terminal device ; or, the preset value corresponds to the TB of the first terminal device cached by the second terminal device.

In yet another optional implementation manner, the first control information includes a preset HARQ process number of the HARQ request, and the HARQ process number is used to indicate the first terminal buffered by the second terminal device The TB of the device; or, the HARQ process number corresponds to the TB of the first terminal device cached by the second terminal device.

In a third aspect, the present application further provides an uplink coordinated transmission method, the uplink coordinated transmission method in this aspect corresponds to the uplink coordinated transmission method described in the first aspect, and is described from the side of the first terminal device. In this method, the first terminal device receives third control information from the network device, and sends the transport block TB of the first terminal device to the network device according to the third control information.

In the method provided by this embodiment of the present application, the second terminal device assists the first terminal device in sending the transport block of the first terminal device, so the TB sent by the second terminal device is the same as the TB sent by the first terminal device, which is beneficial to reduce The interference between the first terminal device and the second terminal device further improves the reception performance of the TB by the network device.

In an optional implementation manner, the third control information is the same as the aforementioned first control information. Further, the third control information and the first control information may be the same field in the downlink control information DCI, and may be used to indicate the TB of the first terminal device buffered by the second terminal device.

In another optional implementation manner, the third control information is different from the aforementioned first control information. Further, the third control information may be a field in the DCI that is different from the first control information, and is used to indicate the TB cached by the first terminal device, and the TB is also the data of the first terminal device that the second terminal device assists the first terminal device to transmit. TB. It may also be referred to as, the third control information is used to instruct the first terminal device to send the TB of the first terminal device buffered by the second terminal device. That is to say, the TB sent by the first terminal device according to the third control information is the same as the TB sent by the second terminal device according to the first control information.

In an optional implementation manner, the method further includes: receiving, by the first terminal device, second control information from a network device, where the second control information is used to instruct the second terminal device to send the TB used by the TB. scrambling. That is to say, the scrambling code indicated by the second control information is the same as the scrambling code used by the second terminal equipment to send the TB, so the first terminal equipment and the second terminal equipment use the same scrambling code to generate physical uplink sharing The channel PUSCH is used to transmit the TB, which can reduce the interference between the first terminal device and the second terminal device, and improve the reception performance of the TB of the first terminal device by the network device.

In an optional implementation manner, the receiving, by the first terminal device, the third control information from the network device includes: receiving, by the first terminal device, the third control information from the network device through multicast or unicast.

In an optional implementation manner, the third control information received through multicast is obtained by using the first wireless network temporary identifier RNTI, where the first RNTI is used to indicate the TB buffered by the first terminal device. It can be seen that if the first terminal device obtains the third control information by using the first RNTI, it indicates that the first terminal device receives the third control information through multicast.

In another optional implementation manner, the third control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, where the second RNTI is used to indicate the TB buffered by the first terminal device. It can be seen that if the first terminal device obtains the third control information by using the second RNTI, it indicates that the first terminal device receives the third control information through unicast.

In an optional implementation manner, the third control information includes a preset value of a bit field, and the preset value is used to indicate the TB cached by the first terminal device; or, the preset value corresponds to the first TB cached by an end device.

In yet another optional implementation manner, the third control information includes a preset HARQ process ID of the HARQ request, and the HARQ process ID is used to indicate the TB buffered by the first terminal device; or, the The preset value corresponds to the TB cached by the first terminal device.

In this embodiment of the present application, the implementation of the third control information may include, but is not limited to, any of the foregoing implementations. Embodiments of the optional third control information can also be combined with each other to indicate the TB buffered by the first terminal device, which is conducive to flexibly selecting an indication manner of the third control information.

In a fourth aspect, the present application further provides an uplink coordinated transmission method, the uplink coordinated transmission method in this aspect corresponds to the uplink coordinated transmission method described in the third aspect, and the uplink coordinated transmission method in this aspect is described from the network device side of. In this method, the network device determines the third control information, sends the third control information to the first terminal device, and then receives the transport block TB from the first terminal device. Wherein, the third control information indicates the TB cached by the first terminal device, which is beneficial to the TB sent by the first terminal device and the TB sent by the second terminal device are the same, thereby reducing the time difference between the first terminal device and the second terminal device. interference, and improve the reception performance of the TB by the network equipment.

In an optional implementation manner, the method further includes: the network device determines second control information, and sends the second control information to the first terminal device. The second control information is used to instruct the second terminal device to send the scrambling code of the TB, and the scrambling code indicated by the second control information is the same as the scrambling code used by the second terminal device to send the TB, so that the first terminal device and the The second terminal device uses the same scrambling code to generate the physical uplink shared channel PUSCH to transmit the TB, which can reduce the interference between the first terminal device and the second terminal device and improve the network device's reception of the TB of the first terminal device. performance.

In an optional implementation manner, the sending, by the network device, the third control information to the first terminal device includes: the network device sending the third control information to the first terminal device through multicast or unicast. the third control information. The manner in which the network device sends the third control information to the first terminal device through multicast is beneficial to reduce the signaling overhead of the network device.

In an optional implementation manner, the third control information sent through multicast is obtained by using the first wireless network temporary identifier RNTI, where the first RNTI is used to indicate the TB buffered by the first terminal device. It can be seen that if the network device obtains the first control information by using the first RNTI, it indicates that the network device sends the third control information to the first terminal device through multicast.

In another optional implementation manner, the third control information sent through unicast is obtained by using the second wireless network temporary identifier RNTI, where the second RNTI is used to indicate the TB buffered by the first terminal device. It can be seen that if the network device obtains the third control information by using the second RNTI, it means that the network device sends the third control information to the first terminal device through unicast.

In yet another optional implementation manner, the third control information includes a preset HARQ process ID of the HARQ request, and the HARQ process ID is used to indicate the TB buffered by the first terminal device; or, the The HARQ process number corresponds to the TB buffered by the first terminal device.

In this embodiment of the present application, the implementation of the third control information may include, but is not limited to, any of the foregoing implementations. Embodiments of the optional third control information may also be combined with each other to indicate one of the TBs cached by the first terminal device, thereby facilitating flexible selection of an indication manner of the third control information.

In a fifth aspect, the present application further provides an uplink cooperative transmission apparatus. The uplink cooperative transmission apparatus has part or all of the functions of the second terminal device described in the first aspect, or part or all of the functions of the first terminal device described in the third aspect. For example, the functions of the uplink cooperative transmission apparatus may have the functions of some or all of the embodiments of the second terminal equipment in this application, and may also have the functions of independently implementing any of the embodiments in this application. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the structure of the uplink cooperative transmission apparatus may include a processing unit and a transceiver unit, and the processing unit is configured to support the uplink cooperative transmission apparatus to perform the corresponding functions in the above method. The transceiver unit is used for supporting communication between the uplink cooperative transmission device and other communication devices. The uplink cooperative transmission apparatus may further include a storage unit, the storage unit is used for coupling with the processing unit and the transceiver unit, and stores necessary program instructions and data of the uplink cooperative transmission apparatus.

In one embodiment, the uplink cooperative transmission device includes:

a transceiver unit, configured to receive first control information from a network device, where the first control information is used to indicate a transport block TB of the first terminal device cached by the second terminal device;

The transceiver unit is further configured to send the TB to the network device.

In addition, in this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the first aspect above, which will not be described in detail here.

In another embodiment, the uplink cooperative transmission device includes:

a transceiver unit, configured to receive third control information from the network device;

The transceiver unit is further configured to send the TB to the network device according to the third control information.

In addition, in this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the above-mentioned third aspect, which will not be described in detail here.

As an example, the transceiving unit may be a transceiver or a communication interface, the storage unit may be a memory, and the processing unit may be a processor.

In one embodiment, the uplink cooperative transmission device includes:

a transceiver, configured to receive first control information from a network device, where the first control information is used to indicate a transport block TB of the first terminal device buffered by the second terminal device;

a transceiver, further configured to send the TB to the network device.

In another embodiment, the uplink cooperative transmission device includes:

a transceiver for receiving third control information from the network device;

The transceiver is further configured to send the TB to the network device according to the third control information.

In another implementation manner, the uplink cooperative transmission device is a chip or a chip system. The processing unit may also be embodied as a processing circuit or a logic circuit; the transceiver unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or chip system.

During implementation, the processor may be used to perform, for example but not limited to, baseband related processing, and the transceiver may be used to perform, for example but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on chips that are independent of each other, or at least part or all of them may be arranged on the same chip. For example, processors can be further divided into analog baseband processors and digital baseband processors. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be integrated with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) on the same chip. Such a chip may be called a System on a Chip (SoC). Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the needs of product design. The embodiments of the present application do not limit the implementation form of the foregoing device.

In a sixth aspect, the present application further provides an uplink cooperative transmission apparatus. The uplink coordinated transmission apparatus has part or all of the functions of the network equipment in the method example described in the second aspect, or the uplink coordinated transmission apparatus has part or all of the functions of the network equipment in the method example described in the fourth aspect. . For example, the functions of the uplink cooperative transmission apparatus may have the functions of some or all of the embodiments of the network equipment in this application, and may also have the functions of independently implementing any one of the embodiments of this application. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one embodiment, the uplink cooperative transmission device includes:

a processing unit, configured to determine first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

a transceiver unit, configured to send the first control information to the second terminal device;

The transceiver unit is further configured to receive the TB from the second terminal device.

In addition, in this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the above-mentioned second aspect, which will not be described in detail here.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver or a communication interface, and the storage unit may be a memory.

In another embodiment, the uplink cooperative transmission device includes:

a processing unit, configured to determine third control information;

a transceiver unit, configured to send the third control information to the first terminal device;

The transceiver unit is further configured to receive the transport block TB from the first terminal device.

In addition, in this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the above-mentioned fourth aspect, which will not be described in detail here.

In one embodiment, the uplink cooperative transmission device includes:

The processor is configured to determine first control information, where the first control information is used to indicate the transport block TB of the first terminal device buffered by the second terminal device.

a transceiver, configured to send the first control information to the second terminal device;

a transceiver, further configured to receive the TB from the second terminal device.

In this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the above-mentioned second aspect, which will not be described in detail here.

In another embodiment, the uplink cooperative transmission device includes:

a processor for determining third control information;

a transceiver, configured to send the third control information to the first terminal device;

The transceiver is further configured to receive the transport block TB from the first terminal device.

In this aspect, for other optional implementations of the uplink cooperative transmission apparatus, reference may be made to the relevant content of the above-mentioned fourth aspect, which will not be described in detail here.

In a seventh aspect, the present application further provides a processor for executing the above-mentioned various methods. In the process of executing these methods, the process of sending and receiving the above-mentioned information in the above-mentioned methods can be understood as the process of outputting the above-mentioned information by the processor and the process of receiving the above-mentioned information input by the processor. When outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver. After the above-mentioned information is output by the processor, other processing may be required before reaching the transceiver. Similarly, when the processor receives the above-mentioned information input, the transceiver receives the above-mentioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may need to perform other processing before being input to the processor.

Based on the above principles, for example, receiving the first control information mentioned in the foregoing method may be understood as the processor receiving the input first control information. For another example, sending the first control information may be understood as the processor outputting the first control information.

For the operations of transmitting, sending and receiving involved in the processor, if there is no special description, or if it does not contradict its actual function or internal logic in the relevant description, it can be more generally understood as the processor output and Receive, input, etc. operations, rather than transmit, transmit, and receive operations directly performed by radio frequency circuits and antennas.

In the implementation process, the above-mentioned processor may be a processor specially used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor. The above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (Read Only Memory, ROM), which can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment does not limit the type of the memory and the setting manner of the memory and the processor.

In an eighth aspect, the present application further provides a communication system, where the system includes at least one first terminal device, at least one second terminal device, and at least one network device according to the above aspects. In another possible design, the system may further include other devices that interact with the first terminal device, the second terminal device or the network device in the solution provided in this application.

In a ninth aspect, the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed by a communication device, the method described in the first aspect is implemented.

In a tenth aspect, the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed by a communication device, the method described in the second aspect above is implemented.

In an eleventh aspect, the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed by a communication device, the method described in the third aspect is implemented.

In a twelfth aspect, the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed by a communication device, the method described in the fourth aspect is implemented.

In a thirteenth aspect, the present application further provides a computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect above.

In a fourteenth aspect, the present application further provides a computer program product comprising instructions which, when executed on a communication device, cause the communication device to perform the method described in the second aspect above.

In a fifteenth aspect, the present application further provides a computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method of the third aspect above.

In a sixteenth aspect, the present application further provides a computer program product comprising instructions, which, when executed on a communication device, cause the communication device to perform the method described in the fourth aspect.

In a seventeenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support the second The terminal device implements the functions involved in the first aspect. For example, at least one of the data and information involved in the above method is determined or processed. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eighteenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support a network device To implement the functions involved in the second aspect, for example, to determine or process at least one of the data and information involved in the above method. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the first terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a nineteenth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support the first The terminal device implements the functions involved in the third aspect. For example, at least one of the data and information involved in the above method is determined or processed. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a twentieth aspect, the present application provides a chip system, the chip system includes a processor and an interface, the interface is used to obtain a program or an instruction, and the processor is used to call the program or instruction to implement or support a network device Implement the functions involved in the fourth aspect. For example, at least one of the data and information involved in the above method is determined or processed. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

Description of drawings

1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a cooperative cache provided by an embodiment of the present application;

3 is a schematic flowchart of an uplink cooperative transmission method provided by an embodiment of the present application;

4a is a schematic diagram of a RNTI sequence provided by an embodiment of the present application;

FIG. 4b is a schematic diagram of another RNTI sequence provided in an embodiment of the present application;

5 is a schematic diagram of a bit field provided by an embodiment of the present application;

6 is a schematic flowchart of another uplink coordinated transmission method provided by an embodiment of the present application;

7 is a schematic diagram of an uplink cooperative transmission scenario provided by an embodiment of the present application;

8 is a schematic diagram of a transmission performance comparison provided by an embodiment of the present application;

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

10 is a schematic structural diagram of a chip provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another uplink coordinated transmission apparatus provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

First, in order to better understand the uplink cooperative transmission method disclosed by the embodiment of the present application, a communication system applicable to the embodiment of the present application is described.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, a network device, a first terminal device and a second terminal device. The number and form of devices shown in FIG. 1 are used as examples and do not constitute a limitation on the embodiments of the present application. In practical applications, two or more network devices, two or more first terminal devices, two or more one or more than two second terminal devices. The communication system shown in FIG. 1 includes a network device, a first terminal device, and a second terminal device, and the network device can provide services for the first terminal device and the second terminal device, and the second terminal device assists the first terminal device. The device sends a transport block as an example to illustrate. The network device in FIG. 1 is taken as an example of a base station, and the first terminal device and the second terminal device are taken as an example of a mobile phone.

The technical solutions of the present application can be applied to various communication systems. For example, the Global System for Mobile Communications, the Long Term Evolution (LT) frequency division duplex system, the LTE time division duplex system, the Universal Mobile Communications System, the 4th-generation (4G) system, and the With the continuous development of communication technology, the technical solutions of the present application can also be used in subsequent evolved communication systems, such as the fifth generation mobile communication (5th-generation, 5G) system, the sixth generation mobile communication (6th-generation, 6G) system, etc. Wait.

In this embodiment of the present application, a network device is an entity on the network side that is used to transmit or receive signals. The network device may be a device with a wireless transceiver function or a chip that can be installed in the device. The network device includes but is not limited to: Evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), network equipment controller (base station controller, BSC), network equipment transceiver station ( base transceiver station, BTS), home network equipment (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point in wireless fidelity (WIFI) systems (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc., and can also be used in 4G, 5G or even 6G systems, such as, The gNB in the NR system, or the transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of the network equipment in the 4G system, or, it can also be the network node that constitutes the gNB or the transmission point , such as a baseband unit (BBU), or a distributed unit (DU), or a picocell, or a femtocell, or a roadside unit in an intelligent driving scenario unit, RSU).

In the embodiments of the present application, the first terminal device and the second terminal device are entities on the terminal side that are used to receive or transmit signals, and the first terminal device and the second terminal device may also be referred to as user equipment (user equipment, UE). ), terminal, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, user agent or user equipment, which can be applied to 4G, 5G and even 6G systems. The terminal in the embodiments of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, industrial Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety A wireless terminal in a smart city, a wireless terminal in a smart city, a wireless terminal in a smart home, an RSU of the aforementioned wireless terminal type, and so on.

In order to facilitate the understanding of the embodiments disclosed in the present application, the following two points are described.

(1) The scenarios in the embodiments disclosed in this application are described by taking the scenario of an NR network in a wireless communication network as an example. It should be noted that the solutions in the embodiments disclosed in this application can also be applied to other wireless communication networks. can also be replaced with the names of corresponding functions in other wireless communication networks.

(2) The embodiments disclosed in the present application will present various aspects, embodiments or features of the present application around a system including a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

Next, the related concepts involved in the embodiments of the present application are briefly introduced.

1. Uplink cooperative transmission

Uplink cooperative transmission: The transmission scenario in which the cooperative terminal equipment (cooperation user equipment, CUE) assists the target terminal equipment (target user equipment, TUE) to send the transport block TB to the network equipment is called uplink cooperative transmission. The target terminal device and the cooperating terminal device belong to the same cooperating terminal device group. In this embodiment of the present application, the target terminal device is marked as the first terminal device, and the cooperative terminal device is marked as the second terminal device.

The second terminal device can be determined by the first terminal device and each terminal device through self-negotiation, or the network device can determine the second terminal device for cooperative transmission for the first terminal device. For example, the network device determines three terminal devices whose distances from the first terminal device are less than a preset value as the second terminal devices that assist the first terminal device to transmit TB, and use radio resource control (radio resource control, RRC) signaling The first terminal device and each second terminal device are notified respectively, so that the second terminal device can assist the first terminal device to transmit the TB.

2. Collaborative caching

The cooperation buffer (cooperation buffer) is a buffer in the first terminal device or the second terminal device for buffering the TB transmitted by the first terminal device and the second terminal device in cooperation, where the TB is the TB of the first terminal device. There may be one or more TBs that the second terminal device assists the first terminal device to transmit. Therefore, the first terminal device or the second terminal device may include one or more cooperative buffers, and one cooperative buffer may store one or more TBs. TB of a terminal device.

As shown in FIG. 2 , after the first terminal device determines that the second terminal device assists the first terminal device to transmit TB, the first terminal device passes the TB that needs the second terminal device to transmit TB through the physical layer through the sidelink (sidelink, SL) is sent to the second terminal device, and the TB will be buffered in the cooperative buffer of the first terminal device. In addition, after receiving the TB from the first terminal device through the SL, the second terminal device also buffers the TB in the cooperative buffer of the second terminal device. It can be seen that the cooperative buffers of the first terminal device and the second terminal device both cache the TBs that are transmitted cooperatively by the first terminal device and the second terminal device.

This embodiment of the present application does not limit the naming of the collaborative cache. In the following embodiments, the cache in the first terminal device and the second terminal device that stores the TB that the second terminal device assists the first terminal device to transmit is called a cooperative cache as an example for description.

At present, uplink multi-user multiple-input multiple-output (MU-MIMO) mode is used for uplink cooperative transmission between terminal devices. That is, after the first terminal device determines that the second terminal device assists the first terminal device to transmit the TB, the first terminal device sends the TB1 that needs to be transmitted cooperatively by the second terminal device to the second terminal device, and then the first terminal device and the second terminal device The terminal device transmits TB2 and TB1 respectively on the same time-frequency resource according to the scheduling of the base station, that is, the first terminal device and the second terminal device respectively transmit different TBs on the same time-frequency resource. Since the TBs sent by the first terminal device and the second terminal device are different, the TBs transmitted by them will interfere with each other, which will cause interference between the first terminal device and the second terminal device, and further cause the network device to The reception performance of the TBs respectively sent by one terminal device and the second terminal device is poor.

Therefore, how to improve the reception performance of the transmission block by the network device during the uplink cooperative transmission process is still one of the problems that needs to be solved urgently at present.

The embodiment of the present application provides an uplink cooperative transmission method 100 . In the uplink cooperative transmission method 100, the network device determines the first control information, determines the third control information, sends the first control information to the second terminal device, and sends the third control information to the first terminal device, the first The control information is used to indicate the TB of the first terminal device buffered by the second terminal device, and the third control information is used to indicate the TB buffered by the first terminal device. Therefore, the second terminal device and the first terminal device can send the TB of the first terminal device, that is, the second terminal device and the first terminal device can send the same TB, which is beneficial to reduce the difference between the second terminal device and the first terminal device. interference, and improve the reception performance of the network device to the TB of the first terminal device.

The embodiment of the present application also provides an uplink cooperative transmission method 200 . Compared with the uplink coordinated transmission method 100, in the uplink coordinated transmission method 200, the network device further sends second control information to the second terminal device and the first terminal device, and the second control information is used to instruct the second terminal device to send the first terminal device. Therefore, the second terminal equipment and the first terminal equipment can use the same scrambling code to generate the physical uplink shared channel PUSCH to transmit the TB, which can reduce the difference between the second terminal equipment and the first terminal equipment. Interference between each other is improved, and the reception performance of the network device to the TB of the first terminal device is improved.

The embodiments of the present application and related implementations thereof will be described below with reference to the accompanying drawings.

Please refer to FIG. 3 , which is a schematic flowchart of an uplink coordinated transmission method 100 provided by an embodiment of the present application. The uplink cooperative transmission method 100 is described from the perspective of interaction between the second terminal device, the first terminal device, and the network device. The uplink cooperative transmission method 100 includes but is not limited to the following steps:

S101. The network device determines first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

S102, the network device determines third control information;

S101 may be executed before S102, and S101 may also be executed after S102, which is not limited in this embodiment of the present application.

Wherein, the first control information is used to indicate the TB of the first terminal device cached by the second terminal device, or the first control information is used to indicate one TB of multiple TBs of the first terminal device cached by the second terminal device . That is to say, if only one TB of the first terminal device is cached in the collaborative cache of the second terminal device, the first control information is used to indicate the TB in the collaborative cache; if there is only one TB cached in the collaborative cache of the second terminal device TBs of multiple first terminal devices, the first control information is used to indicate one of the TBs cached in the cooperative cache.

In one embodiment, the third control information is the same as the aforementioned first control information. Further, the third control information and the first control information may be the same field in downlink control information (downlink control information, DCI), and may be used to indicate the TB of the first terminal device cached by the second terminal device.

In another embodiment, the third control information is different from the first control information. Further, the third control information may be a field in the DCI that is different from the first control information, and is used to indicate the TB cached by the first terminal device, and the TB is also the data of the first terminal device that the second terminal device assists the first terminal device to transmit. TB. It may also be referred to as, the third control information is used to instruct the first terminal device to send the TB of the first terminal device buffered by the second terminal device. That is to say, the TB sent by the first terminal device according to the third control information is the same as the TB sent by the second terminal device according to the first control information.

S103. The network device sends the first control information to the second terminal device;

S104. The network device sends the third control information to the first terminal device;

S103 may be executed before S104, and S103 may also be executed after S104, which is not limited in this embodiment of the present application.

S105. The second terminal device receives the first control information from the network device;

S106, the first terminal device receives the third control information from the network device;

S105 may be executed before S106, and S105 may also be executed after S106, which is not limited in this embodiment of the present application.

In an implementation manner, in steps S102 and S103, the network device may send DCI by multicast, and the DCI includes the first control information and the third control information. That is, receiving the first control information from the network device by the second terminal device in S104 includes: the second terminal device receives the first control information from the network device through multicast. In S105, the first terminal device receives the third control information from the network device, which includes: the first terminal device receives the third control information from the network device through multicast.

In an embodiment, the first control information received through multicast is obtained by using a first radio network temporary identity (RNTI). Specifically, the second terminal device uses the first RNTI to descramble a cyclic redundancy check (cyclic redundancy check, CRC) calculated by the DCI to obtain the first control information received through multicast. That is, if the second terminal device successfully descrambles the CRC calculated by the DCI using the first RNTI, the second terminal device has received the first control information through multicast.

Correspondingly, the first control information sent by the network device through multicast is obtained by using the first RNTI. Specifically, the network device calculates the CRC for the DCI, and then uses the first RNTI to scramble the CRC to obtain the scrambled DCI, that is, obtain the DCI sent by the multicast, and the DCI sent by the multicast includes the first control of the multicast sent. information. That is to say, the network device uses the first RNTI to scramble the CRC calculated by the DCI, obtains the DCI sent through multicast, and then sends the DCI to the second terminal device through multicast, so that the network device sends the second terminal device through multicast to the second terminal device. The terminal device sends the first control information.

For example, the DCI includes 10 bits. After the network device encodes the DCI, the obtained coded DCI includes 20 bits and 5 bits of CRC. The first RNTI includes 5 bits. The network device uses the first RNTI to scramble the CRC, and the obtained CRC includes 25 bits. bit DCI, the DCI including 25 bits is the DCI obtained by the network device and sent through the multicast, and the DCI includes the first control information sent through the multicast.

In an embodiment, the first RNTI is an RNTI newly introduced by the network device, and the RNTI is used to obtain the first control information sent through multicast. That is to say, the first RNTI is different from the RNTI originally used by the network device, and the first RNTI is an RNTI specially used for scrambling the CRC calculated by the DCI including the first control information.

Optionally, before sending the first control information to the second terminal device, the network device sends the first RNTI to the second terminal device through RRC signaling, which is beneficial for the second terminal device to know the first RNTI in advance.

In an embodiment, the third control information received through multicast is obtained by using the first RNTI. For the implementation of the first RNTI, reference may be made to the description of the first control information above, which will not be described in detail.

In another implementation manner, in steps S102 and S103, the network device may send DCI in a unicast manner, such as sending DCI1 to the second terminal device and sending DCI2 to the second terminal device, wherein the DCI1 includes the first control information, the DCI2 Including third control information. That is, receiving the first control information from the network device by the second terminal device in S104 includes: the second terminal device receives the first control information from the network device through unicast. In S105, the first terminal device receiving the third control information from the network device includes: the first terminal device receives the third control information from the network device through unicast.

In an embodiment, the first control information received through unicast is obtained by using the second wireless network temporary identifier RNTI, and the third control information received through unicast is obtained by using the second wireless network temporary identifier RNTI. Specifically, the second terminal device uses the second RNTI of the second terminal device to descramble the CRC calculated by the first DCI to obtain the first DCI received through unicast, where the DCI includes the first control information received through unicast; A terminal device descrambles the CRC calculated by the second DCI using the second RNTI of the first terminal device to obtain the second DCI received through unicast, where the DCI includes the third control information received through unicast. That is to say, if the second terminal device successfully descrambles the CRC calculated by the first DCI using the second RNTI of the second terminal device, the second terminal device receives the first control information through unicast; If a terminal device successfully descrambles the CRC calculated by the second DCI using the second RNTI of the first terminal device, the first terminal device receives the third control information through unicast.

Correspondingly, the first control information sent by the network device through unicast is obtained by using the second wireless network temporary identifier RNTI. Specifically, the network device calculates the first DCI to obtain a CRC, and then uses the second RNTI of the second terminal device to scramble the CRC to obtain the first DCI sent to the second terminal device through unicast, where the DCI includes unicast The first control information sent to the second terminal device; the network device uses the second RNTI of the first terminal device to scramble the CRC calculated by the second DCI to obtain the second DCI sent to the first terminal device through unicast, the The DCI includes third control information sent to the first terminal device by unicast. Then, the network device sends the first DCI to the second terminal device, and sends the second DCI to the first terminal device.

The second RNTI of the second terminal device is obtained by the network device based on the original RNTI of the second terminal device and a preset rule, and the original RNTI of the second terminal device is other information obtained by the network device and unicast to the second terminal device The RNTI used, the preset rule may be a rule negotiated in advance between the network device and the second terminal device; the second RNTI of the first terminal device is obtained by the network device based on the original RNTI of the first terminal device and the preset rule, the first The original RNTI of the terminal device is the RNTI used by the network device to obtain other information unicast to the first terminal device, and the preset rule may be a rule pre-negotiated by the network device and the first terminal device. That is to say, the first control information and the third control information respectively sent by the network device to the second terminal device and the first terminal device through unicast are obtained by the network device using different RNTIs to obtain the first control information and the third control information. .

For example, the RNTI sequence used by the network device to obtain other information unicast to the second terminal device is shown as '1011' in Figure 4a, and the preset rule negotiated in advance between the network device and the second terminal device is After adding three bit sequences of all 1s to the RNTI sequence used by other information of the second terminal device, the network device determines that the second RNTI-A sequence used to obtain the first control information unicast to the second terminal device is as shown in the figure '1011111' in 4a.

For another example, the RNTI sequence used by the network device to obtain other information unicast to the first terminal device is shown as '101' in Fig. 4b, and the preset rule negotiated in advance between the network device and the first terminal device is to obtain the unicast to the first terminal device after obtaining the RNTI sequence. Two bit sequences of all 0s are added before the RNTI sequence used by other information of a terminal device, then the network device determines the second RNTI-B sequence used to obtain the third control information unicast to the first terminal device as shown in Figure 4b '00101' in . Therefore, the network device uses the sequence '1011111' to scramble the CRC calculated by the first DCI including the first control information, obtains the scrambled first DCI, and sends the scrambled first DCI to the second terminal device; and scramble the CRC calculated by the second DCI including the third control information using the sequence '00101', obtain the scrambled second DCI, and send the scrambled second DCI to the first terminal device . That is to say, the network device uses different second RNTIs to scramble the CRCs calculated by the first DCI and the second DCI, respectively, to obtain the first control information unicast to the second terminal device and unicast to the first terminal device respectively. the third control information.

In an embodiment, before the second terminal device receives the first control information from the network device, the second terminal device also receives a TB from the first terminal device, and the TB needs to be transmitted by the second terminal device to assist the first terminal device in transmission. TB, that is, the second terminal device obtains the TB that assists the transmission of the first terminal device.

In an implementation manner, before the first terminal device receives the third control information from the network device, the first terminal device sends the TB requiring the assistance of the second terminal device to transmit to the second terminal device, so that the second terminal device can assist in the transmission. The first terminal device transmits the TB.

S107. The second terminal device sends the TB to the network device;

Sending the TB by the second terminal device to the network device can be understood as: the second terminal device reads the TB from the cooperative cache buffering the TB indicated by the first control information according to the first control information, and sends the TB to the network device. the TB.

S108. The first terminal device sends the TB to the network device;

The sending of the TB by the first terminal device to the network device can be understood as: the first terminal device reads the TB from the cooperative cache in which the TB indicated by the third control information is cached according to the third control information, and sends the TB to the network device. the TB.

The first control information is used to indicate the TB of the first terminal device cached by the second terminal device, and the third control information is used to indicate the TB of the first terminal device cached, which is beneficial for both the second terminal device and the first terminal device to send the first terminal device. The TB of the terminal device, that is, the second terminal device and the first terminal device send the same TB, which is beneficial to reduce the interference between the second terminal device and the first terminal device and improve the reception performance of the network device to the TB of the first terminal device .

S109. The network device receives the TB from the second terminal device and the first terminal device.

It can be seen that in this embodiment of the present application, the first control information is used to indicate the TB of the first terminal device that is cached by the second terminal device, and the third control information is used to indicate the TB of the first terminal device that is cached by the first terminal device, and the TB is also the second terminal device. Assisting the TB cached by the first terminal device, and further, the second terminal device can send the TB of the first terminal device according to the first control information and the first terminal device according to the third control information, that is, the second terminal device and the first terminal device. The same TB can be sent, which is beneficial to reduce the interference between the second terminal device and the first terminal device, and improve the reception performance of the transmission block by the network device.

In this embodiment of the present application, the first control information indicates the TB of the first terminal device cached by the second terminal device, or indicates one of multiple TBs of the first terminal device cached by the second terminal device. Embodiments of the first control information will be described below based on two cases in which there are one or more TBs of the first terminal device cached by the second terminal device, respectively. Embodiments of the first control information may include but are not limited to the following:

Case 1. The TB of the first terminal device cached by the second terminal device is one

That is to say, the number of TBs that the second terminal device assists the first terminal device to transmit is one, that is, one TB of the first terminal device is buffered in the cooperative cache of the second terminal device.

In an embodiment, the first control information includes a preset value of a bit field, and the preset value is used to indicate the TB of the first terminal device cached by the second terminal device. That is, the preset value is used to indicate the TB of the first terminal device cached in the cooperative cache of the second terminal device.

In an implementation manner, the bit field is newly introduced by the network device and is different from the original bit field in the first control information. For example, the bit field is the bit field A newly introduced by the network device, the bit field A includes one bit, and the preset value of the bit field A can indicate the first terminal device cached by the second terminal device through the index shown in Table 1. TB. As shown in Table 1, when the index is '0', it is used to indicate the TB buffered in the non-cooperative buffer, that is, the indicated TB is not the TB of the first terminal device, indicating that the second terminal device sends the TB in other buffers; when the index When it is '1', it is used to indicate the TB cached in the collaborative cache, that is, to indicate the TB of the first terminal device cached in the second terminal device, indicating that the second terminal device needs to send the TB cached in the collaborative cache of the second terminal device .

Table 1

索引index	指示instruct
00	非协作缓存中缓存的TBTB cached in non-cooperative cache
11	协作缓存中缓存的TBTB cached in collaborative cache

In another implementation manner, the bit field is a bit field that still has reserved bits in the network device, and the preset value of the bit field is the reserved bits. The reserved bits of the bit field can be understood as, before the network device is used to indicate the TB of the first terminal device buffered by the second terminal device, the reserved bits of the bit field are not used for other indications.

For example, when the bit field B includes three bits, and the value of the bit field B is '101', it is not used for other indications, and the network device determines that the first control information includes the preset value of the bit field B '101', And '101' is used to indicate the TB of the first terminal device buffered by the second terminal device, indicating that the second terminal device needs to send the TB in the cooperative buffer.

In another embodiment, the preset value of the bit field is a preset combination of multiple bit fields, and the preset combination of the multiple bit fields is used by the network device to indicate the first terminal cached by the second terminal device. The device's TB has not been used for other indications.

For example, as shown in Figure 5, a value of bit field A is '110', and a value of bit field B is '0011', and the combination of the value of bit field A and the value of bit field B is '1100011', And the combination is not used for other indications, then the network device determines that the first control information includes the preset value of the bit field C as '1100011', and '1100011' is used to indicate the first terminal device cached by the second terminal device. TB, indicating that the second terminal device needs to send the TB in the cooperative buffer.

In another implementation manner, the first control information includes a preset process ID of a hybrid automatic repeat request (HARQ), where the HARQ process ID is used to indicate the cached data of the second terminal device. TB of the first terminal device. That is to say, the HARQ process number is used to indicate the TB of the first terminal device buffered in the collaborative buffer of the second terminal device, indicating that the second terminal device needs to send the TB in the collaborative buffer.

In an embodiment, the preset HARQ process number is configured by the network device to the first terminal device and the second terminal device through RRC signaling. For example, the network device informs the first terminal device and the second terminal device through RRC signaling that when the HARQ process number is No. 8, it is used to indicate the TB of the first terminal device cached by the second terminal device, and the first control information Including HARQ process number No. 8. When the first control information obtained by the second terminal device through RRC signaling includes the HARQ process number No. 8, it indicates that the second terminal device needs to send the TB in the cooperative buffer.

In yet another embodiment, the first control information includes a first RNTI, and the first RNTI is used to indicate the TB of the first terminal device buffered by the second terminal device, that is, the first RNTI is used for Indicates the TB of the first terminal device cached in the cooperative cache of the second terminal device. For the implementation of the first RNTI, reference may be made to the description in S104, which will not be described in detail.

In yet another embodiment, the first control information includes a second RNTI, and the second RNTI is used to indicate the TB of the first terminal device buffered by the second terminal device, that is, the second RNTI is used to Indicates the TB of the first terminal device cached in the cooperative cache of the second terminal device. For the implementation of the second RNTI, reference may be made to the description in S104, which will not be described in detail.

Scenario 2: There are multiple TBs of the first terminal device cached by the second terminal device

That is, there are multiple TBs that the second terminal device assists the first terminal device to transmit. However, in the first terminal device and the second terminal device, the multiple TBs may be cached through one or more cooperative caches. Therefore, the multiple TBs and each of the multiple cooperative caches are cached in the following from one collaborative cache. Both the caches cache multiple TBs to illustrate the implementation of the first control information.

Embodiment 2.1. There are multiple TBs of the first terminal device cached by the second terminal device, and one TB of the first terminal device is cached in one cooperative cache

In an embodiment, the first control information includes a preset value of a bit field, and the preset value corresponds to the TB of the first terminal device cached by the second terminal device. For example, the first control information includes a bit field A, the bit field A includes two bits, and the preset value of the bit field may indicate one cooperative buffer among the plurality of cooperative buffers in the second terminal device through the index table shown in Table 2. TB, that is, indicating the TB of the first terminal device cached by the second terminal device, index the corresponding TB. Among them, '00' indicates the TB buffered in the non-cooperative buffer, '01' indicates the TB buffered in the cooperative buffer No. 1, '10' indicates the TB buffered in the cooperative buffer No. 2, and '11' indicates the buffer in the cooperative buffer No. 3. TB. If the preset value of the bit field included in the first control information received by the second terminal device is '10', the first control information corresponds to the TB cached in the No. 2 cooperation cache, indicating that the second terminal device needs to send the No. 2 cooperation buffer. TB cached in cache.

Table 2

索引index	指示instruct
0000	非协作缓存中缓存的TBTB cached in non-cooperative cache
0101	1号协作缓存中缓存的TBTB cached in collaborative cache #1
1010	2号协作缓存中缓存的TBTB cached in collaborative cache #2
1111	3号协作缓存中缓存的TBTB cached in collaborative cache #3

In another embodiment, the first control information includes a preset HARQ process number, and the HARQ process number corresponds to the TB of the first terminal device buffered by the second terminal device. That is to say, different HARQ process numbers correspond to TBs buffered in different cooperative buffers in the second terminal device.

For example, as shown in Table 3, the HARQ process ID No. 0 indicates the TB buffered in the non-cooperative buffer in the second terminal device, the HARQ process ID No. 1 indicates the TB buffered in the cooperative buffer No. 1 in the second terminal device, and the HARQ No. 2 The process number indicates the TB buffered in the cooperative buffer No. 2 in the second terminal device. If the first control information received by the second terminal equipment includes the HARQ process number No. 3, the first control information corresponds to the TB buffered in the cooperative buffer No. 3, indicating that the second terminal equipment needs to send the TB buffered in the cooperative buffer No. 3.

table 3

HARQ进程号HARQ process number	指示instruct
00	非协作缓存中缓存的TBTB cached in non-cooperative cache
11	1号协作缓存中缓存的TBTB cached in collaborative cache #1
22	2号协作缓存中缓存的TBTB cached in collaborative cache #2
33	3号协作缓存中缓存的TBTB cached in collaborative cache #3

It can be seen that if the second terminal device includes a plurality of cooperative caches that cache the TB of the first terminal device, and each cooperative cache stores a TB of the first terminal device, the second terminal device can use the above two types of first control information. The embodiment determines a TB in one cooperative buffer among multiple cooperative buffers of the second terminal device, thereby facilitating the second terminal device to send the same TB.

Embodiment 2.2: There are multiple TBs of the first terminal device cached by the second terminal device, and multiple TBs of the first terminal device are cached in one cooperative cache

In one embodiment, the first control information includes a preset value of a bit field and a preset HARQ process number, and the preset value is used to indicate the cooperative buffer of the TB of the first terminal device in the second terminal device, and The preset HARQ process number is used to indicate the TB corresponding to the HARQ process number in the cooperative buffer indicated by the preset value. That is to say, the second terminal device can determine a cooperative buffer among the plurality of cooperative buffers according to the preset value of the bit field in the first control information, and can determine the cooperative buffer in the cooperative buffer according to the HARQ process ID in the first control information One TB is determined among the multiple buffered TBs, so that the second terminal device reads the TB from the determined cooperative buffer, and sends the TB to the network device.

For example, the first control information includes a bit field B, and the preset value of the bit field B indicates a cooperative buffer in the second terminal device that caches the TB of the second terminal device through the index shown in Table 4. The first control information includes The preset HARQ process number indicates the TB corresponding to the HARQ process number in the cooperative buffer indicated by the preset value of the bit field B through Table 5. If the preset value of the bit field B in the first control information is '11', and the preset HARQ process number is No. 2, the first control information indicates the No. 2 TB cached in the No. 3 cooperative buffer in the second terminal device, Indicates that the second terminal device needs to send the No. 2 TB buffered in the No. 3 cooperative buffer to the network device.

Table 4

索引index	指示instruct
0000	非协作缓存non-cooperative cache
0101	1号协作缓存Collaborative Cache No. 1
1010	2号协作缓存Collaborative Cache No. 2
1111	3号协作缓存Collaborative Cache No. 3

table 5

HARQ进程号HARQ process number	指示instruct
11	1号TB1 TB
22	2号TB2 TB
33	3号TBTB 3
44	4号TB4 TB

In another embodiment, the first control information includes a preset HARQ process number and a preset value of a bit field, where the preset HARQ process number is used to indicate that the TB of the first terminal device is cached in the second terminal device The preset value of the one bit field is used to indicate the TB corresponding to the preset value in the cooperative cache indicated by the HARQ process number.

That is to say, the second terminal device can determine a cooperative buffer among the plurality of cooperative buffers according to the HARQ process ID in the first control information, and can determine a cooperative buffer in the cooperative buffer according to the preset value of the bit field in the first control information One TB is determined among the multiple buffered TBs, so that the second terminal device reads the TB from the determined cooperative buffer, and sends the TB to the network device.

For example, the preset HARQ process number included in the first control information is as shown in Table 6 to indicate the cooperative buffering of the TB of the first terminal device in the second terminal device. The first control information includes a bit field C, the bit field C includes two bits, and the bit field C indicates the TB corresponding to the preset value of the bit field C in the cooperative buffer indicated by the HARQ process number through the index shown in Table 7. For example, the first control information includes the preset HARQ process number as No. 3 and the preset value of the bit field C as '01', then the first control information is used to indicate the cached data in the cooperative buffer No. 3 in the second terminal device. The No. 1 TB indicates that the second terminal device and the No. 1 TB buffered in the No. 3 cooperative buffer need to be sent to the network device.

Table 6

HARQ进程号HARQ process number	指示instruct
00	非协作缓存 non-cooperative cache
11	1号协作缓存Collaborative Cache No. 1
22	2号协作缓存Collaborative Cache No. 2
33	3号协作缓存Collaborative Cache No. 3

Table 7

索引index	指示instruct
0000	0号TB0 TB
0101	1号TB1 TB
1010	1号TB1 TB
1111	3号TBTB 3

It can be seen that, if the second terminal device includes multiple cooperative caches, and one collaborative cache stores multiple TBs of the first terminal device, the second terminal device can, according to the implementation of the above-mentioned first control information, A cooperative buffer is determined from the cooperative buffers, and a TB is determined from a plurality of TBs buffered in the cooperative buffer, thereby facilitating the second terminal device and the first terminal device to send the same TB.

In addition, for the case where the third control information is the first control information, that is, the two fields are the same field, the related implementation of the third control information is the related implementation of the first control information. For fields that are different from the first control information in the third control information, the indication manner of the third control information may refer to the implementation manner of the first control information, wherein the indication manner of the third control information is the same as that of the implementation manner of the first control information. The difference is that the function of the third control information is different from that of the first control information. As mentioned above, the third control information is used to instruct the TB buffered by the first terminal device or used to instruct the first terminal device to send the buffer of the second terminal device. TB of the first terminal device.

For the third control information that is a field different from the first control information, the implementation of the third control information will be described based on two cases in which the number of TBs cached in the cooperative cache of the first terminal device is one or more:

Case 1. The TB cached by the first terminal device is one

That is to say, only one TB that needs to be transmitted by the second terminal device with the assistance of the first terminal device is cached in the cooperative cache of the first terminal device.

In an embodiment, the third control information includes a preset value of a bit field, and the preset value is used to indicate the TB buffered by the first terminal device. That is, the preset value is used to indicate the TB buffered in the cooperative buffer of the first terminal device. For the implementation of the preset value of the bit field, reference may be made to the implementation of the preset value of a bit field in Case 1 in the above-mentioned implementation of the first control information, which will not be described in detail.

In another embodiment, the third control information includes a preset process ID of a hybrid automatic repeat request (HARQ), where the HARQ process ID is used to indicate the TB buffered by the first terminal device. That is, the HARQ process number is used to indicate the TB buffered in the cooperative buffer of the first terminal device, indicating that the first terminal device needs to send the TB in the cooperative buffer. For the implementation of the HARQ process number, reference may be made to the implementation of the HARQ process number in Case 1 in the above-mentioned implementation of the first control information, which will not be described in detail.

In yet another embodiment, the first control information includes the first RNTI, and the first RNTI is used to indicate the TB buffered by the first terminal device, that is, the first RNTI is used to indicate the cooperative buffer of the first terminal device. TB of cache. For the implementation of the first RNTI, reference may be made to the description in S104, which will not be described in detail.

In another embodiment, the first control information includes a second RNTI, and the second RNTI is used to indicate the TB buffered by the first terminal device, that is, the second RNTI is used to indicate the cooperation of the first terminal device TB cached in cache. For the implementation of the second RNTI, reference may be made to the description in S104, which will not be described in detail.

Scenario 2: There are multiple TBs of the first terminal device cached by the first terminal device

That is to say, there are multiple TBs buffered in the first terminal device that the second terminal device assists the first terminal device to transmit. However, in the first terminal device, the multiple TBs can be cached through one or more cooperative caches. Therefore, the following caches the multiple TBs from one collaborative cache and caches multiple TBs in each of the multiple collaborative caches. The implementation of the third control information is described in two aspects of TB.

Embodiment 2.1. There are multiple TBs of the first terminal device cached by the first terminal device, and one TB is cached in one cooperative cache

In an embodiment, the third control information includes a preset value of a bit field, where the preset value corresponds to a TB buffered by the first terminal device, and the TB is one of the multiple TBs. For the implementation of the preset value of the bit field, reference may be made to the implementation of the preset value in Case 1 in the above-mentioned implementation of the first control information, which will not be described in detail.

In another implementation manner, the third control information includes a preset HARQ process number, where the HARQ process number corresponds to a TB of the first terminal device, and the TB is one of the multiple TBs. That is to say, different HARQ process numbers correspond to TBs buffered in different cooperative buffers in the first terminal device. For the implementation of the HARQ process number, reference may be made to the implementation in Case 1 in the above-mentioned implementation of the first control information, which will not be described in detail.

Embodiment 2.2. There are multiple TBs cached by the first terminal device, and multiple TBs are cached in one cooperative cache

In one embodiment, the third control information includes a preset value of a bit field and a preset HARQ process number, and the preset value is used to indicate the cooperative buffer corresponding to the preset value in the first terminal device, so The preset HARQ process number is used to indicate the TB corresponding to the HARQ process number in the cooperative buffer indicated by the preset value. For the implementation of the preset value of the bit field and the HARQ process number, reference may be made to the implementation of Case 2 in the above-mentioned implementation of the first control information, which will not be described in detail.

In another embodiment, the third control information includes a preset HARQ process number and a preset value in a bit field, where the preset HARQ process number is used to indicate the cooperation corresponding to the HARQ process number in the first terminal device buffer, the preset value of the one bit field is used to indicate the TB corresponding to the preset value in the cooperative buffer indicated by the HARQ process number. For the implementation of the HARQ process number and the preset value of the bit field, reference may be made to the description in Case 2 in the above-mentioned implementation of the first control information, and will not be described in detail.

The embodiment of the present application proposes an uplink cooperative transmission method 200 by taking the second terminal device and the first terminal device using the same scrambling code to transmit the same TB as an example. FIG. 6 is a schematic flowchart of the uplink cooperative transmission method 200 .

S201. The network device determines first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

S202, the network device determines third control information;

S203. The network device sends the first control information to the second terminal device;

S204. The network device sends the third control information to the first terminal device;

S205. The second terminal device receives the first control information from the network device;

S206, the first terminal device receives the third control information from the network device;

The implementations of S201-S206 are the same as the implementations of the above-mentioned S101-S106, and will not be described in detail.

S207. The network device determines second control information, where the second control information is used to indicate sending the scrambling code of the TB;

The second control information is used to instruct to send the scrambling code of the first terminal device, so that the first terminal device and the second terminal device use the same scrambling code to generate the PUSCH to send the TB of the first terminal device, which can reduce the difference between the first terminal device and the second terminal device. The interference between the second terminal devices improves the reception performance of the transmission block by the network device.

In one embodiment, the second control information is further used to indicate the DMRS sequence, subcarrier identification (carrier identification), modulation and coding scheme (modulation and coding scheme), redundancy version (redundancy version) and the like for sending the TB. The information indicated by the second control information is used to send the TB indicated by the first control information, that is, used to send the TB of the first terminal device buffered by the second terminal device.

In one embodiment, the first control information and the second control information are in one DCI. If the first control information and the second control information are in one DCI, the first control information and the second control information are respectively different fields in one DCI. Optionally, the first control information and the second control information may also be in different DCIs, respectively.

S208. The network device sends the second control information to the second terminal device;

In an implementation manner, the network device sends the second control information to the first terminal device and the second terminal device simultaneously by multicast, that is, S207 and S208 may be: the network device sends the second control information to the second terminal device and the first terminal device. 2. Control information, this method can reduce the signaling overhead of the network device.

If the network device sends the second control information to the second terminal device and the first terminal device through multicast, the network device can use the first RNTI to obtain the second control information sent through the multicast, or use other RNTIs to obtain the second control information sent through the multicast. The second control information sent by broadcast is not limited in this embodiment of the present application.

In another implementation manner, the network device sends the second control information to the first terminal device and the second terminal device in a unicast manner, respectively, as described in S207 and S208.

If the network device sends the second control information to the second terminal device and the first terminal device through unicast, the network device can use the above-mentioned second RNTI to obtain the second control information sent through unicast, or use other RNTIs to obtain the second control information sent through unicast. The second control information sent by broadcast is not limited in this embodiment of the present application.

S209. The network device sends the second control information to the first terminal device;

The manner in which the network device sends the second control information to the first terminal device is the same as the manner in which the network device sends the second control information to the second terminal device. That is, if the network device sends the second control information to the second terminal device through multicast, if the network device sends the second control information to the first terminal device through multicast; if the network device sends the second control information to the second terminal device through unicast When the second control information is sent, if the network device sends the second control information to the first terminal device through unicast.

S210. The second terminal device receives the second control information from the network device;

S211. The first terminal device receives the second control information from the network device;

S210 and S211 correspond to S208 and S209, that is, if the network device sends the second control information to the first terminal device and the second terminal device through multicast, then the first terminal device and the second terminal device simultaneously receive data from the network through multicast. The second control information of the device; if the network device sends the second control information to the first terminal device and the second terminal device through unicast, the first terminal device and the second terminal device respectively receive the second control information from the network device through unicast. control information.

S212. The second terminal device sends the TB to the network device;

S213. The first terminal device sends the TB to the network device;

In this embodiment of the present application, the sending of the TB by the second terminal device and the first terminal device to the network device can be understood as: the second terminal device according to the first control information, the first terminal device according to the third control information, from the cache The TB is read from the cooperative buffer of the TB indicated by a control information, and the PUSCH is generated by using the scrambling code indicated by the second control information, and the TB is sent by using the PUSCH. That is, the first terminal device and the second terminal device use the same scrambling code to send the same TB, which can reduce the interference between the first terminal device and the second terminal device and improve the TB reception performance of the first terminal device of the network device.

S214. The network device receives the TB from the second terminal device and the first terminal device.

In the embodiment of the present application, the second terminal device and the first terminal device use the same scrambling code to generate the PUSCH, and use the PUSCH to send the same TB. Therefore, the first terminal device and the second terminal device can be regarded as shown in FIG. 7 . A virtual terminal device shown, the virtual terminal device sends PUSCH and TB to the network device according to the scheduling information sent by the base station through a dedicated physical control channel (dedicated physical control channel, DPCCH). In addition, the signals carried by each antenna of the virtual terminal device come from the same TB. Therefore, for the network device, it can be regarded as a terminal device with distributed antennas transmitting data to the network device. The uplink cooperative transmission It can be called distributed MIMO cooperation technology. For example, the second terminal device has two transmit antennas, and the first terminal device also has two transmit antennas. When the first terminal device and the second terminal device use the distributed MIMO cooperation technology, the first terminal device and the second terminal device A terminal device with 4 distributed antennas is formed to transmit the same TB to the network device, and the signals transmitted by each antenna come from the same TB.

The performance comparison between the distributed MIMO cooperation technology and the MU-MIMO cooperation technology in the embodiment of the present application is shown in FIG. 8 . It can be seen from FIG. 8 that the distributed MIMO cooperation technology has higher spectral efficiency than MU-MIMO. , that is, TBs with more bits of information are transmitted in the same time-frequency resource, because when the distributed MIMO cooperative technology is used for uplink cooperative transmission, the first terminal device and the second terminal device send the same Therefore, the power and the number of antennas used to send the TB are more than the power and the number of antennas used by the first terminal device and the second terminal device for uplink cooperative transmission using the MU-MIMO cooperative technology. Therefore, the embodiments of the present application can improve the The reception performance of the transport block by the network device.

In the implementation of this application, the implementation of the second control information indicating that the scrambling code of the TB of the first terminal device is sent may include but not be limited to the following:

In an embodiment, the second control information is configured through RRC signaling. That is, the network device sends the second control information to the second terminal device and the first terminal device through RRC signaling, so that the second terminal device and the first terminal device use the information indicated by the second control information to send the first terminal device. The TB of the first terminal device cached by the second terminal device.

In another implementation manner, the second control information is determined based on the second control information indication from the network device, and the second control information indication is used to indicate one of the multiple scrambling codes. The multiple scrambling codes are configured by the network device to the second terminal device and the first terminal through RRC signaling. That is, the network device informs the second terminal device and the first terminal device through the second control information instruction that the scrambling code used to send the TB of the first terminal device buffered by the second terminal device is one of the scrambling codes configured by the RRC signaling. , so that the second terminal device and the first terminal device use the scrambling code indicated by the second control information to send the TB. For example, the 3 scrambling codes configured in advance by the network device include No. 0 scrambling code, No. 1 scrambling code, No. 2 scrambling code and No. 0 scrambling code, and the second control information used to indicate the scrambling code The index is indicated, it can be seen that if the second control information indication is '10', the second control information indication is used to indicate the No. 3 scrambling code, that is, it indicates that the second terminal device and the first terminal device use the No. 3 scrambling code to send the second The TB of the first terminal device cached by the terminal device.

Table 8

索引index	指示instruct
0000	0号扰码 Scramble code 0
0101	1号扰码No. 1 scrambling code
1010	2号扰码Scrambler number 2
1111	3号扰码Scrambler number 3

In yet another embodiment, the second control information is determined based on the second control information indication from the network device, the second control information indication is used to indicate one set of multiple sets of scheduling information, and each set of scheduling information includes a scrambling information. code. The multiple sets of scheduling information are configured by the network device to the second terminal device and the first terminal through RRC signaling. That is, the network device may notify the second terminal device or the first terminal device of multiple sets of scheduling information in advance through RRC signaling, and each set of scheduling information includes a DMRS sequence and a scrambling code.

For example, it is assumed that the first set of scheduling information includes No. 1 DMRS sequence and No. 2 scrambling code; the second set of scheduling information includes No. 2 DMRS sequence and No. 2 scrambling code; the second terminal device and the first terminal device receive a The second control information indicates that the second control information indicates the first set of scheduling information in the two sets of scheduling information used to indicate the RRC signaling configuration of the radio resource control; further, the first terminal device and the second terminal device can be based on the second set of scheduling information. The scrambling code in the scheduling information sends the TB of the first terminal device buffered by the second terminal device.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are respectively introduced from the perspective of interaction between the network device and the second terminal device, the first terminal device, and the network device. In order to implement the functions in the methods provided by the above embodiments of the present application, network devices and terminals may include hardware structures and/or software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

FIG. 9 is a schematic structural diagram of a communication device. The communication apparatus 900 may be a second terminal device, or a first terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a second terminal device, or the like. It may be a chip, a chip system, or a processor that supports the first terminal device to implement the above method. The apparatus can be used to implement the methods described in the foregoing method embodiments, and for details, reference may be made to the descriptions in the foregoing method embodiments.

The communication apparatus 900 may include one or more processors 901 . The processor 901 may be a general-purpose processor or a special-purpose processor, or the like. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, process software program data.

Optionally, the communication apparatus 900 may include one or more memories 902, and instructions 904 may be stored thereon, and the instructions may be executed on the processor 901, so that the communication apparatus 900 executes the above method methods described in the examples. Optionally, the memory 902 may also store data. The processor 901 and the memory 902 can be provided separately or integrated together.

Optionally, the communication apparatus 900 may further include a transceiver 905 and an antenna 906 . The transceiver 905 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 905 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

The communication device 900 is a network device: the processor 901 is configured to execute S101, S102 in the uplink coordinated transmission method 100; S201, S202, and S207 of the uplink coordinated transmission method 200; the transceiver 905 is configured to execute the uplink coordinated transmission method S103 , S104 , and S109 in 100 ; perform S203 , S204 , S208 , S209 , and S214 in the uplink cooperative transmission method 200 .

The communication apparatus 900 is a second terminal device: the transceiver 905 is configured to perform S105 and S107 in the uplink coordinated transmission method 100 ; and perform S205 , S210 and S212 in the uplink coordinated transmission method 200 .

The communication apparatus 900 is a first terminal device: the transceiver 905 is configured to execute S106 and S108 in the uplink coordinated transmission method 100 ; the transceiver 905 is configured to execute S206 , S211 and S213 of the uplink coordinated transmission method 200 .

In another possible design, the processor 901 may include a transceiver for implementing the functions of receiving and transmitting. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. Transceiver circuits, interfaces or interface circuits used to implement receiving and transmitting functions may be separate or integrated. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transmission.

In another possible design, optionally, the processor 901 may store an instruction 903, and the instruction 903 runs on the processor 901, so that the communication apparatus 900 can execute the method described in the foregoing method embodiment. The instructions 903 may be hardened in the processor 901, in which case the processor 901 may be implemented by hardware.

In another possible design, the communication apparatus 900 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in the embodiments of the present application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiments may be a network device or a terminal, but the scope of the communication apparatus described in the embodiments of the present application is not limited thereto, and the structure of the communication apparatus may not be limited by FIG. 9 . The communication apparatus may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A set with one or more ICs, optionally, the IC set may also include a storage component for storing data and instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

For the case that the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG. 10 . The chip 1000 shown in FIG. 10 includes a processor 1001 and an interface 1002 . The number of processors 1001 may be one or more, and the number of interfaces 1002 may be multiple.

In one design, for the case where the chip is used to implement the function of the second terminal device in the embodiment of the present application:

The interface 1002 is configured to receive first control information from the network device, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device; the interface 1002 is also configured to use for sending the TB to the network device.

Optionally, the chip further includes a memory 1003, and the memory 1003 is used for storing necessary program instructions and data of the second terminal device.

In one design, for the case where the chip is used to implement the function of the first terminal device in the embodiment of the present application:

The interface 1002 is configured to receive third control information from a network device; the interface 1002 is further configured to send the TB to the network device according to the third control information.

Optionally, the chip further includes a memory 1003, where the memory 1003 is used to store necessary program instructions and data of the first terminal device.

In a design, for the case where the chip is used to implement the function of the network device in the embodiment of the present application:

The processor 1001 is configured to determine first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device; the interface 1002 is configured to send the second terminal device to the sending the first control information; the interface 1002 is further configured to receive the TB from the second terminal device.

Optionally, the chip further includes a memory 1003, where the memory 1003 is used to store necessary program instructions and data of the network device.

In another design, for the case where the chip is used to implement the function of the network device in the embodiment of the present application:

The processor 1001 is configured to determine third control information; the interface 1002 is configured to send the third control information to a first terminal device; the interface 1002 is further configured to receive data from the first terminal device the transport block TB.

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the protection scope of the embodiments of the present application.

The embodiments of the present application and the method embodiments shown in the uplink cooperative transmission method 100 and the uplink cooperative transmission method 200 are based on the same concept, and the technical effects brought by them are also the same. The description of the exemplary embodiment is not repeated here.

As shown in FIG. 11 , an embodiment of the present application provides another apparatus 1100 for uplink cooperative transmission. The uplink cooperative transmission apparatus may be the second terminal device, or may be a component (eg, an integrated circuit, a chip, etc.) of the second terminal device. Alternatively, the uplink cooperative transmission apparatus may be a network device, or may be a component of the network device (eg, an integrated circuit, a chip, etc.). Still alternatively, the uplink cooperative transmission apparatus may be the first terminal device, or may be a component of the first terminal device (eg, an integrated circuit, a chip, etc.). The uplink cooperative transmission apparatus may also be other communication units, which are used to implement the methods in the method embodiments of the present application. The uplink cooperative transmission apparatus 1100 may include: a processing unit 1101 . Optionally, the transceiver unit 1102 and the storage unit 1103 may also be included.

In a possible design, one or more units as in FIG. 11 may be implemented by one or more processors, or by one or more processors and memory; or by one or more processors and a transceiver; or implemented by one or more processors, a memory, and a transceiver, which is not limited in this embodiment of the present application. The processor, memory, and transceiver can be set independently or integrated.

The uplink cooperative transmission apparatus has the function of implementing the first terminal device, or the second terminal device, or the network device described in the embodiments of this application. For example, the uplink cooperative transmission apparatus includes modules or units or means (means) corresponding to the terminal equipment performing the steps involved in the terminal equipment described in the embodiments of the present application, and the functions or units or means (means) may be implemented by software, or It can be realized by hardware, can also be realized by executing corresponding software by hardware, and can also be realized by a combination of software and hardware. For details, further reference may be made to the corresponding descriptions in the foregoing corresponding method embodiments.

In a possible design, an uplink cooperative transmission apparatus 1100 may include:

The transceiver unit 1102 is configured to receive first control information from the network device, where the first control information is used to indicate the transmission block TB of the first terminal device cached by the second terminal device; the transceiver unit 1102 is further configured to send the The network device sends the TB.

For optional implementations of the embodiments of the present application, reference may be made to the related content described in the uplink coordinated transmission method 100 and the uplink coordinated transmission method 200 in the above method embodiments. It will not be described in detail here.

In yet another possible design, an uplink cooperative transmission apparatus 1100 may include:

In another possible design, an uplink cooperative transmission apparatus 1100 may include:

The processing unit 1101 is configured to determine first control information, where the first control information is used to indicate the transport block TB buffered by the first terminal device; the transceiver unit 1102 is configured to send the first terminal device to the second terminal device. a control information; the transceiver unit 1102 is further configured to receive the TB from the second terminal device.

The processing unit 1101 is configured to determine third control information; the transceiver unit 1102 is configured to send the third control information to the first terminal device; the transceiver unit 1102 is further configured to receive transmissions from the first terminal device block TB.

It can be understood that, in some scenarios, some optional features in the embodiments of the present application can be implemented independently of other features, such as the solution currently based on them, to solve corresponding technical problems and achieve corresponding The effect can also be combined with other features according to requirements in some scenarios. Correspondingly, the communication device provided in the embodiment of the present application can also implement these features or functions correspondingly, which will not be repeated here.

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements.

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other possible Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

The present application further provides a computer-readable medium for storing computer software instructions, and when the instructions are executed by the communication device, the functions of any of the foregoing method embodiments are implemented.

The present application also provides a computer program product for storing computer software instructions, and when the instructions are executed by the communication device, the functions of any of the foregoing method embodiments are implemented.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks, SSD)) etc.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

An uplink cooperative transmission method, characterized in that the method comprises:

The second terminal device receives first control information from the network device, where the first control information is used to indicate the transport block TB of the first terminal device buffered by the second terminal device;

The second terminal device sends the TB to the network device.
The method according to claim 1, wherein the method further comprises:

The second terminal device receives second control information from the network device, where the second control information is used to instruct the second terminal device to send the scrambling code of the TB.
The method according to claim 1 or 2, wherein the second terminal device receives the first control information from the network device, comprising:

The second terminal device receives the first control information from the network device through multicast or unicast.
The method according to claim 3, wherein the first control information received through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to instruct the second terminal device to cache the TB of the first terminal device.
The method according to claim 3, wherein the first control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to instruct the second terminal device to buffer the TB of the first terminal device.
The method according to any one of claims 1 to 5, wherein the first control information includes a preset value of a bit field, and the preset value is used to indicate the first value cached by the second terminal device. the TB of a terminal device; or,

The preset value corresponds to the TB of the first terminal device cached by the second terminal device.
The method according to any one of claims 1 to 5, wherein the first control information includes a preset HARQ process number for HARQ, and the HARQ process number is used to indicate the second the TB of the first terminal device cached by the terminal device; or,

The HARQ process number corresponds to the TB of the first terminal device buffered by the second terminal device.
An uplink cooperative transmission method, characterized in that the method comprises:

The network device determines first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

sending, by the network device, the first control information to the second terminal device;

The network device receives the TB from the second terminal device.
The method according to claim 8, wherein the method further comprises:

determining, by the network device, second control information, where the second control information is used to instruct the second terminal device to send the scrambling code of the TB;

The network device sends the second control information to the second terminal device.
The method according to claim 8 or 9, wherein the network device sending the first control information to the second terminal device comprises:

The network device sends the first control information to the second terminal device through multicast or unicast.
The method according to claim 10, wherein the first control information sent through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to instruct the second terminal device to cache the TB of the first terminal device.
The method according to claim 10, wherein the first control information sent by unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to instruct the second terminal device to buffer the TB of the first terminal device.
The method according to any one of claims 8 to 12, wherein the first control information includes a preset value of a bit field, and the preset value is used to indicate the first value cached by the second terminal device. the TB of a terminal device; or,

The preset value corresponds to the TB of the first terminal device cached by the second terminal device.
The method according to any one of claims 8 to 12, wherein the first control information includes a preset HARQ process number for HARQ, and the HARQ process number is used to indicate the second the TB of the first terminal device cached by the terminal device; or,

The HARQ process number corresponds to the TB of the first terminal device buffered by the second terminal device.
An uplink cooperative transmission method, characterized in that the method comprises:

The first terminal device receives third control information from the network device; the third control information is used to indicate the transport block TB buffered by the first terminal device;

The first terminal device sends the TB of the first terminal device to the network device according to the third control information.
The method of claim 15, wherein the method further comprises:

The first terminal device receives second control information from the network device, where the second control information is used to instruct the second terminal device to send the scrambling code used by the TB; the second terminal device is to assist the The terminal equipment transmitted by the first terminal equipment.
The method according to claim 15 or 16, wherein the third control information received by the first terminal device from the network device comprises:

The first terminal device receives the third control information from the network device through multicast or unicast.
The method according to claim 17, wherein the third control information received through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to instruct the first terminal device to buffer TB.
The method according to claim 17, wherein the third control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the TB buffered by the first terminal device .
The method according to any one of claims 15 to 19, wherein the third control information includes a preset value of a bit field, and the preset value is used to indicate the TB cached by the first terminal device; or , the preset value corresponds to the TB cached by the first terminal device.
The method according to any one of claims 15 to 19, wherein the third control information includes a preset HARQ process number of the HARQ request, and the HARQ process number is used to indicate the first terminal device The cached TB; or, the preset value corresponds to the cached TB of the first terminal device.
An uplink cooperative transmission method, characterized in that the method comprises:

The network device determines third control information; the third control information is used to indicate the transport block TB buffered by the first terminal device;

sending, by the network device, the third control information to the first terminal device;

The network device receives the TB from the first terminal device.
The method of claim 22, wherein the method further comprises:

The network device determines second control information; the second control information is used to indicate the scrambling code of the TB sent by the second terminal device;

The network device sends the second control information to the first terminal device.
The method according to claim 22 or 23, wherein the sending, by the network device, the third control information to the first terminal device comprises:

The network device sends the third control information to the first terminal device through multicast or unicast.
The method according to claim 24, wherein the third control information sent by multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to instruct the first terminal device to buffer TB.
The method according to claim 24, wherein the third control information sent by unicast is obtained by using the second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the TB buffered by the first terminal device .
The method according to any one of claims 22 to 26, wherein the third control information includes a preset value of a bit field, and the preset value is used to indicate the TB cached by the first terminal device; or , the preset value corresponds to the TB cached by the first terminal device.
The method according to any one of claims 22 to 26, wherein the third control information includes a preset HARQ process number of the HARQ request, and the HARQ process number is used to indicate the first terminal device TB buffered; or, the HARQ process number corresponds to the TB buffered by the first terminal device.
An uplink cooperative transmission device, comprising:

a transceiver unit, configured to receive first control information from the network device, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

The transceiver unit is further configured to send the TB to the network device.
The uplink cooperative transmission apparatus according to claim 29, wherein the transceiver unit is further configured to receive second control information from the network device, wherein the second control information is used to instruct the second terminal device The scrambling code for the TB is sent.
The uplink cooperative transmission device according to claim 29 or 30, wherein,

The transceiver unit is specifically configured to receive the first control information from the network device through multicast or unicast.
The apparatus for uplink cooperative transmission according to claim 31, wherein the first control information received through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to indicate the second The TB of the first terminal device cached by the terminal device.
The apparatus for uplink cooperative transmission according to claim 31, wherein the first control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the second The TB of the first terminal device cached by the terminal device.
The uplink cooperative transmission apparatus according to any one of claims 29 to 33, wherein the first control information includes a preset value of a bit field, and the preset value is used to indicate the second terminal equipment the cached TB of the first terminal device; or,

The preset value corresponds to the TB of the first terminal device cached by the second terminal device.
The uplink cooperative transmission apparatus according to any one of claims 29 to 33, wherein the first control information includes a preset HARQ process number of a hybrid automatic repeat request, and the HARQ process number is used to indicate the the TB of the first terminal device cached by the second terminal device; or,

The HARQ process number corresponds to the TB of the first terminal device buffered by the second terminal device.
An uplink cooperative transmission device, comprising:

a processing unit, configured to determine first control information, where the first control information is used to indicate the transport block TB of the first terminal device cached by the second terminal device;

a transceiver unit, configured to send the first control information to the second terminal device;

The transceiver unit is further configured to receive the TB from the second terminal device.
The uplink cooperative transmission device according to claim 36, wherein:

The processing unit is further configured to determine second control information, where the second control information is used to instruct the second terminal device to send the scrambling code of the TB;

The transceiver unit is further configured to send the second control information to the second terminal device.
The uplink cooperative transmission device according to claim 36 or 37, wherein,

The transceiver unit is specifically configured to send the first control information to the second terminal device through multicast or unicast.
The apparatus for uplink cooperative transmission according to claim 38, wherein the first control information sent through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to indicate the second The TB of the first terminal device cached by the terminal device.
The apparatus for uplink cooperative transmission according to claim 38, wherein the first control information sent through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the second The TB of the first terminal device cached by the terminal device.
The uplink cooperative transmission apparatus according to any one of claims 36 to 40, wherein the first control information includes a preset value of a bit field, and the preset value is used to indicate the second terminal equipment the cached TB of the first terminal device; or,

The preset value corresponds to the TB of the first terminal device cached by the second terminal device.
The uplink cooperative transmission apparatus according to any one of claims 36 to 40, wherein the first control information includes a preset HARQ process number of a hybrid automatic repeat request, and the HARQ process number is used to indicate the the TB of the first terminal device cached by the second terminal device; or,

The HARQ process number corresponds to the TB of the first terminal device buffered by the second terminal device.
An uplink cooperative transmission device, comprising:

a transceiver unit, configured to receive third control information from a network device; the third control information is used to indicate a transport block TB buffered by the first terminal device;

and a processing unit, configured to send the TB of the first terminal device to the network device according to the third control information.
The uplink cooperative transmission apparatus according to claim 43, wherein the transceiver unit is further configured to receive second control information from the network device, wherein the second control information is used to instruct the second terminal device to send the the scrambling code used by the TB; the second terminal device is a terminal device that assists the first terminal device in transmission.
The uplink cooperative transmission apparatus according to claim 43 or 44, wherein the transceiver unit receives third control information from the network device, which is specifically used for:

The third control information from the network device is received through multicast or unicast.
The uplink cooperative transmission apparatus according to claim 45, wherein the third control information received through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to indicate the first TB cached by the end device.
The uplink cooperative transmission apparatus according to claim 45, wherein the third control information received through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the first terminal equipment TB of cache.
The uplink cooperative transmission apparatus according to any one of claims 43 to 47, wherein the third control information includes a preset value of a bit field, and the preset value is used to indicate the buffered value of the first terminal device. TB; or, the preset value corresponds to the TB cached by the first terminal device.
The uplink cooperative transmission apparatus according to any one of claims 43 to 47, wherein the third control information includes a preset HARQ process number of a hybrid automatic repeat request, and the HARQ process number is used to indicate the first A TB buffered by a terminal device; or, the preset value corresponds to a TB buffered by the first terminal device.
An uplink cooperative transmission device, comprising:

a processing unit, configured to determine third control information; the third control information is used to indicate the transport block TB buffered by the first terminal device;

a transceiver unit, configured to send the third control information to the first terminal device;

The transceiver unit is further configured to receive the TB from the first terminal device.
The uplink cooperative transmission device according to claim 50, wherein:

The processing unit is further configured to determine second control information; the second control information is used to indicate the scrambling code of the TB sent by the second terminal device;

The transceiver unit is configured to send the second control information to the first terminal device.
The uplink cooperative transmission apparatus according to claim 50 or 51, wherein the transceiver unit sends the third control information to the first terminal device, which is specifically used for:

Send the third control information to the first terminal device through multicast or unicast.
The apparatus for uplink cooperative transmission according to claim 52, wherein the third control information sent through multicast is obtained by using a first wireless network temporary identifier RNTI, and the first RNTI is used to indicate the first TB cached by the end device.
The uplink cooperative transmission apparatus according to claim 52, wherein the third control information sent through unicast is obtained by using a second wireless network temporary identifier RNTI, and the second RNTI is used to indicate the first terminal equipment TB of cache.
The uplink cooperative transmission apparatus according to any one of claims 50 to 54, wherein the third control information includes a preset value of a bit field, and the preset value is used to indicate the buffered value of the first terminal device. TB; or, the preset value corresponds to the TB cached by the first terminal device.
The uplink cooperative transmission apparatus according to any one of claims 50 to 54, wherein the third control information includes a preset HARQ process number of a hybrid automatic repeat request, and the HARQ process number is used to indicate the first A TB buffered by a terminal device; or, the HARQ process number corresponds to a TB buffered by the first terminal device.
A communication device, characterized in that the device comprises a processor, and the processor executes a computer program stored in a memory, so that the device performs the method according to any one of claims 1 to 28.
A computer-readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 28 to be implemented.
A computer program product storing instructions which, when executed by a computer, cause the method of any of claims 1 to 28 to be carried out.