A communication method and apparatus

Abstract

This application provides a communication method, relating to the field of wireless communication, which can reduce network overhead while improving the reliability of data reception by a terminal device. The method includes: a first terminal device receiving first resource information from a network device, wherein the first resource information indicates downlink data resources of a second terminal device, the downlink data resources of the second terminal device being included in the overlapping bandwidth portion of the first and second terminal devices; the first terminal device receiving downlink data from the network device of the second terminal device according to the first resource information; and the first terminal device transmitting the downlink data to the second terminal device.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to a communication method and apparatus. Background Technology

[0002] Currently, in existing systems, such as New Radio (NR) systems or other systems, network devices configure resources for each terminal device before sending data to it. Subsequently, the network device can send data to each terminal device using those resources, and correspondingly, each terminal device receives data from the network device using those same resources. For example, a network device can send data 1 to terminal device 1 using resource 1 and data 2 to terminal device 2 using resource 2. Correspondingly, terminal device 1 can receive data 1 from the network device using resource 1, and terminal device 2 can receive data 2 from the network device using resource 2.

[0003] With the development of wireless communication technology, to improve the reliability of data reception by terminal devices, multiple terminal devices connected to a network device can cooperate to receive data from the network device. Taking a network device sending data 1 to terminal device 1, with terminal devices 1 and 2 cooperating, as an example, the network device can send data 1 to terminal device 1 on resource 1 and to terminal device 2 on resource 2. Terminal device 2 receives data 1 from the network device on resource 2 and sends data 1 back to terminal device 1 on resource 3. Terminal device 1 receives data 1 from the network device on resource 1 and from terminal device 2 on resource 3. In this way, terminal device 1 receives data 1 from both the network device and terminal device 2, thus improving the reliability of data reception compared to terminal device 1 only receiving data 1 from the network device. However, in the above example, the network device needs to send data 1 to each terminal device; therefore, when the number of cooperating terminal devices is large, the network overhead is significant. Summary of the Invention

[0004] This application provides a communication method and device that can improve the reliability of data reception by terminal devices while reducing network overhead.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a communication method, comprising: a first terminal device receiving first resource information from a network device, wherein the first resource information is used to indicate downlink data resources of a second terminal device, the downlink data resources of the second terminal device being included in the overlapping bandwidth portion of the first terminal device and the second terminal device; the first terminal device receiving downlink data from the second terminal device from the network device according to the first resource information; and the first terminal device sending the downlink data to the second terminal device.

[0007] The method provided in the first aspect above allows a first terminal device to receive first resource information from a network device, indicating the resource on which downlink data for a second terminal device is sent. Based on this first resource information, the first terminal device receives downlink data from the network device and forwards it to the second terminal device. Thus, the second terminal device receives downlink data from both the network device and the first terminal device, improving the reliability of data reception. Furthermore, since the first terminal device receives downlink data from the network device based on the first resource information, it knows which resource the network device is sending downlink data to, and receives the downlink data from the network device on the resource indicated by the first resource information. Therefore, when the network device sends downlink data, both the first and second terminal devices can receive it, reducing the power consumption of the network device, lowering data transmission resource costs, and improving the transmission efficiency of downlink cooperation.

[0008] In one possible implementation, the first terminal device receives first configuration information from the network device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the first terminal device receives first resource information from the network device, including: the first terminal device receives the first resource information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above method, the first terminal device can receive the first configuration information from the network device for indicating the resources of the downlink control information of the second terminal device. Therefore, the first terminal device can receive the first resource information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device, so that the first terminal device can receive the downlink data of the second terminal device according to the first resource information. In this way, when the network device sends the downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0009] In one possible implementation, the first terminal device receives second configuration information from the network device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device, and the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device; the first terminal device receives first resource information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device, including: the first terminal device receives the first resource information from the network device on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. Based on the above method, the first terminal device can receive the second configuration information from the network device for indicating the resources of the downlink control information of the first terminal device, so that the first terminal device knows the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, and receives the first resource information from the network device on the overlapping resources. In this way, when the network device sends downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power overhead of the network device and reducing the resource overhead of control information transmission.

[0010] In one possible implementation, the second configuration information includes the bandwidth configuration of the first terminal device; the first configuration information includes a first offset and the control resource set configuration of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device. Based on the above method, the first terminal device can determine the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device through the bandwidth configuration of the first terminal device, the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device, and the configuration of the control resource set of the second terminal device. This allows the first terminal device to receive first resource information from the network device on the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. Thus, when the network device sends downlink control information of the second terminal device once, both the first and second terminal devices can receive the downlink control information of the second terminal device, reducing the power overhead of the network device and the resource overhead of control information transmission.

[0011] In one possible implementation, the first configuration information includes the bandwidth configuration of the second terminal device and the control resource set configuration of the second terminal device. Based on the above method, the first terminal device can know the resources of the downlink control information of the second terminal device through the first configuration information including the bandwidth configuration and the control resource set configuration of the second terminal device. This allows the first terminal device to receive the first resource information from the network device on the resources of the downlink control information of the second terminal device. Thus, when the network device sends downlink control information of the second terminal device once, both the first and second terminal devices can receive the downlink control information, reducing the power overhead of the network device and the resource overhead of control information transmission.

[0012] In one possible implementation, the first terminal device receives second configuration information from the network device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device; the first terminal device receives first resource information from the network device, including: the first terminal device receiving the first resource information from the network device on the resources of the downlink control information of the first terminal device, wherein the first resource information includes the downlink control information of the first terminal device, and the downlink control information of the first terminal device is used to indicate the resources of the downlink data of the second terminal device. Based on the above method, the first terminal device can receive the first resource information from the network device on the resources of the downlink control information of the first terminal device indicated by the second configuration information, so that the first terminal device can receive the downlink data of the second terminal device from the network device on the resources of the downlink data of the second terminal device. In this way, when the network device sends downlink data of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0013] In one possible implementation, the resources of the downlink control information of the first terminal device do not overlap with the resources of the downlink control information of the second terminal device. Based on the above method, when the resources of the downlink control information of the first terminal device and the downlink control information of the second terminal device do not overlap, the first terminal device can receive first resource information from the network device on the resources of the downlink control information of the first terminal device, which is used to indicate the resources of the downlink data of the second terminal device. This allows the first terminal device to receive the downlink data of the second terminal device from the network device on the resources of the downlink data of the second terminal device. In this way, when the network device sends downlink data of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0014] In one possible implementation, the first terminal device receives a group identifier from the network device, wherein the group identifier is used to descramble downlink control information received by the first terminal device; the first terminal device sends the downlink data to the second terminal device, including: if the first terminal device successfully descrambles the downlink control information of the second terminal device according to the group identifier, the first terminal device sends the downlink data to the second terminal device. Based on the above method, the first terminal device can receive a group identifier from the network device for descrambling the downlink control information received by the first terminal device, and the first terminal device can know whether to send the received downlink data to the second terminal device according to the group identifier. For example, the first terminal device can send the downlink data to the second terminal device after successfully descrambling the downlink control information of the second terminal device according to the group identifier.

[0015] Secondly, embodiments of this application provide a communication method, comprising: a second terminal device receiving first resource information from a network device, wherein the first resource information is used to indicate the resources of downlink data of the second terminal device, and the resources of the downlink data of the second terminal device are included in the overlapping bandwidth portion of the first terminal device and the second terminal device; the second terminal device receiving downlink data from the network device according to the first resource information; and the second terminal device receiving the downlink data from the first terminal device.

[0016] The method provided in the second aspect above allows the second terminal device to receive first resource information from the network device indicating resources for downlink data of the second terminal device. Based on the first resource information, the second terminal device receives downlink data from the network device and also receives downlink data from the network device's first terminal device. Thus, in addition to receiving downlink data from the network device, the second terminal device can also receive downlink data from the first terminal device, improving the reliability of data reception. Furthermore, the resources for the downlink data of the second terminal device are included in the overlapping bandwidth portion of the bandwidth of the first and second terminal devices. Therefore, when the network device sends downlink data from the second terminal device once, both the first and second terminal devices can receive the downlink data, reducing the power overhead of the network device, reducing data transmission resource overhead, and improving the transmission efficiency of downlink cooperation.

[0017] In one possible implementation, the second terminal device receives first configuration information from the network device, wherein the first configuration information is used to indicate the resources of the second terminal device's downlink control information; the second terminal device receiving first resource information from the network device includes: the second terminal device receiving the first resource information from the network device on the resources of the second terminal device's downlink control information, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above method, the second terminal device can receive first configuration information from the network device for indicating the resources of the second terminal device's downlink control information, thus, the second terminal device can receive the downlink control information of the second terminal device from the network device on the resources of the second terminal device's downlink control information.

[0018] Thirdly, embodiments of this application provide a communication method, comprising: a network device sending first resource information to a first terminal device and a second terminal device, wherein the first resource information is used to indicate the resources of downlink data of the second terminal device, and the resources of downlink data of the second terminal device are included in the overlapping bandwidth portion of the first terminal device and the second terminal device; the network device sending the downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information.

[0019] The method provided in the third aspect above allows a network device to send first resource information to a first terminal device and a second terminal device, indicating resources for downlink data of the second terminal device, and to send downlink data of the second terminal device to both the first and second terminal devices based on the first resource information. In this way, when the network device sends downlink data of the second terminal device once, both the first and second terminal devices can receive the downlink data of the second terminal device, reducing the power consumption of the network device, reducing the resource consumption of data transmission, and improving the transmission efficiency of downlink cooperation.

[0020] In one possible implementation, the network device sends first configuration information to the first terminal device and the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the network device sends the first resource information to the first terminal device and the second terminal device, including: the network device sending the first resource information to the first terminal device and the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above method, the network device can send first configuration information for indicating the resources of the downlink control information of the second terminal device to the first terminal device and the second terminal device, so that the first terminal device and the second terminal device can receive the downlink control information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device. In this way, when the network device sends the downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0021] In one possible implementation, the network device sends second configuration information to the first terminal device. This second configuration information indicates the resources of the downlink control information of the first terminal device, and these resources overlap with the resources of the downlink control information of the second terminal device. The network device then sends first resource information to both the first and second terminal devices based on the resources of the downlink control information of the second terminal device. This includes sending the first resource information to both the first and second terminal devices on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. Based on this method, the network device can send second configuration information to the first terminal device to indicate the resources of the downlink control information of the first terminal device, enabling the first terminal device to know the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, and to receive the first resource information from the network device on these overlapping resources. Thus, by sending the downlink control information of the second terminal device once, both the first and second terminal devices can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0022] In one possible implementation, the second configuration information includes the bandwidth configuration of the first terminal device; the first configuration information includes a first offset and the control resource set configuration of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device. Based on the above method, the network device can indicate to the first terminal device, through the bandwidth configuration of the first terminal device, the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device, and the control resource set configuration of the second terminal device, the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, so that the first terminal device receives the first resource information from the network device on the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. In this way, when the network device sends downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power overhead of the network device and reducing the resource overhead of control information transmission.

[0023] In one possible implementation, the first configuration information includes the bandwidth configuration of the second terminal device and the control resource set configuration of the second terminal device. Based on the above method, the network device can use the first configuration information, including the bandwidth configuration of the second terminal device and the control resource set configuration of the second terminal device, to indicate the resources of the downlink control information of the second terminal device to the first terminal device. This allows the first terminal device to receive the first resource information from the network device on the resources of the downlink control information of the second terminal device. Thus, when the network device sends downlink control information of the second terminal device once, both the first and second terminal devices can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0024] In one possible implementation, the network device sends second configuration information to the first terminal device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device; the network device sends the first resource information to the first terminal device, including sending the first resource information to the first terminal device on the resources of the downlink control information of the first terminal device, wherein the first resource information includes the downlink control information of the first terminal device, and the downlink control information of the first terminal device is used to indicate the resources of the downlink data of the second terminal device. Based on the above method, the network device can send the first resource information indicating the resources of the downlink data of the second terminal device to the first terminal device on the resources of the downlink control information of the first terminal device indicated by the second configuration information, so that the first terminal device can receive the downlink data from the second terminal device on the resources of the downlink data of the second terminal device. In this way, when the network device sends the downlink data of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0025] In one possible implementation, the network device sends first configuration information to the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the network device sending the first resource information to the second terminal device includes: the network device sending the first resource information to the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above method, the network device can send first configuration information to the second terminal device to indicate the resources of the downlink control information of the second terminal device, so that the second terminal device can receive the downlink control information from the network device on the resources of the downlink control information of the second terminal device.

[0026] In one possible implementation, the resources of the downlink control information of the first terminal device do not overlap with the resources of the downlink control information of the second terminal device. Based on the above method, when the resources of the downlink control information of the first terminal device and the downlink control information of the second terminal device do not overlap, the network device can send first resource information to the first terminal device on the resources of the downlink control information of the first terminal device to indicate the resources of the downlink data of the second terminal device. This allows the first terminal device to receive the downlink data from the second terminal device on the resources of the downlink data of the second terminal device. In this way, when the network device sends downlink data from the second terminal device once, both the first and second terminal devices can receive the downlink data from the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0027] In one possible implementation, the network device sends a group identifier to the first terminal device, wherein the group identifier is used to descramble the downlink control information received by the first terminal device. Based on the above method, the network device can send a group identifier to the first terminal device to descramble the downlink control information received by the first terminal device, so that the first terminal device can know whether to send the received downlink data to the second terminal device based on the group identifier.

[0028] Fourthly, embodiments of this application provide a communication device, which includes: a receiving module and a transmitting module; the receiving module is configured to receive first resource information from a network device, wherein the first resource information is used to indicate downlink data resources of a second terminal device, and the downlink data resources of the second terminal device are included in the overlapping bandwidth portion of the communication device and the second terminal device; the receiving module is further configured to receive downlink data from the network device of the second terminal device according to the first resource information; and the transmitting module is configured to transmit the downlink data to the second terminal device.

[0029] The communication apparatus provided in the fourth aspect above can receive first resource information from a network device indicating resources for downlink data from a second terminal device. Based on this first resource information, the communication apparatus receives downlink data from the second terminal device from the network device and forwards the downlink data to the second terminal device. Thus, the second terminal device can receive downlink data from both the network device and the communication apparatus, improving the reliability of data reception. Furthermore, since the communication apparatus receives downlink data from the network device based on the first resource information, it knows on which resource the network device is sending downlink data to the second terminal device. The communication apparatus also receives downlink data from the network device on the resource indicated by the first resource information. Therefore, when the network device sends downlink data to the second terminal device, both the communication apparatus and the second terminal device can receive the downlink data, reducing the power consumption of the network device, reducing data transmission resource overhead, and improving the transmission efficiency of downlink cooperation.

[0030] In one possible implementation, the receiving module is further configured to receive first configuration information from the network device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; specifically, the receiving module is configured to receive first resource information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above-described communication device, the communication device can receive first configuration information from the network device for indicating the resources of the downlink control information of the second terminal device. Therefore, the communication device can receive the first resource information of the second terminal device from the network device on the resources of the downlink control information of the second terminal device, so that the communication device can receive the downlink data of the second terminal device according to the first resource information. In this way, when the network device sends downlink control information of the second terminal device once, both the communication device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0031] In one possible implementation, the receiving module is further configured to receive second configuration information from the network device, wherein the second configuration information is used to indicate the resources of the downlink control information of the communication device, and the resources of the downlink control information of the communication device overlap with the resources of the downlink control information of the second terminal device; the receiving module is further specifically configured to receive the first resource information from the network device on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the communication device. Based on the above-described communication device, the communication device can receive the second configuration information from the network device indicating the resources of the downlink control information of the communication device, so that the communication device knows the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the communication device, and receives the first resource information from the network device on the overlapping resources. In this way, when the network device sends downlink control information of the second terminal device once, both the communication device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0032] In one possible implementation, the second configuration information includes the configuration of the bandwidth portion of the communication device; the first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth portion configuration of the second terminal device relative to the bandwidth portion configuration of the communication device. Based on the above-described communication device, the communication device can determine the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the communication device through the configuration of the bandwidth portion of the communication device, the offset of the bandwidth portion configuration of the second terminal device relative to the bandwidth portion configuration of the communication device, and the configuration of the control resource set of the second terminal device. This allows the communication device to receive first resource information from the network device on the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the communication device. Thus, when the network device sends downlink control information of the second terminal device once, both the communication device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power overhead of the network device and the resource overhead of control information transmission.

[0033] In one possible implementation, the first configuration information includes the bandwidth configuration of the second terminal device and the control resource set configuration of the second terminal device. Based on the above-described communication device, the communication device can know the downlink control information resources of the second terminal device through the first configuration information including the bandwidth configuration of the second terminal device and the control resource set configuration of the second terminal device. This allows the communication device to receive the first resource information from the network device on the downlink control information resources of the second terminal device. Thus, when the network device sends downlink control information of the second terminal device once, both the communication device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the network device and the resource consumption of control information transmission.

[0034] In one possible implementation, the receiving module is further configured to receive second configuration information from the network device, wherein the second configuration information is used to indicate the resources of the downlink control information of the communication device; the receiving module is further specifically configured to receive the first resource information from the network device on the resources of the downlink control information of the communication device, wherein the first resource information includes the downlink control information of the communication device, which is used to indicate the resources of the downlink data of the second terminal device. Based on the above-described communication device, the communication device can receive the first resource information from the network device on the resources of the downlink control information of the communication device indicated by the second configuration information, which indicates the resources of the downlink data of the second terminal device, so that the communication device can receive the downlink data of the second terminal device from the network device on the resources of the downlink data of the second terminal device. In this way, when the network device sends downlink data of the second terminal device once, both the communication device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0035] In one possible implementation, the resources of the downlink control information of the communication device do not overlap with the resources of the downlink control information of the second terminal device. Based on the above-described communication device, when the resources of the downlink control information of the communication device and the downlink control information of the second terminal device do not overlap, the communication device can receive first resource information from the network device on the resources of the downlink control information of the communication device, which is used to indicate the resources of the downlink data of the second terminal device. This allows the communication device to receive the downlink data of the second terminal device from the network device on the resources of the downlink data of the second terminal device. In this way, when the network device sends downlink data of the second terminal device once, both the communication device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the network device and the resource consumption of data transmission.

[0036] In one possible implementation, the receiving module is further configured to receive a group identifier from the network device, wherein the group identifier is used to descramble downlink control information received by the communication device; the sending module is specifically configured to send the downlink data to the second terminal device if the communication device successfully descrambles the downlink control information of the second terminal device according to the group identifier. Based on the above-described communication device, the communication device can receive a group identifier from the network device for descrambling the downlink control information received by the communication device, and the communication device can know whether to send the received downlink data to the second terminal device based on the group identifier. For example, the communication device can send the downlink data to the second terminal device after successfully descrambling the downlink control information of the second terminal device according to the group identifier.

[0037] Fifthly, embodiments of this application provide a communication device, the communication device comprising: a receiving module; the receiving module being configured to receive first resource information from a network device, wherein the first resource information is used to indicate downlink data resources of the communication device, the downlink data resources of the communication device being included in the overlapping bandwidth portion of the first terminal device and the communication device; the receiving module being further configured to receive downlink data of the communication device from the network device according to the first resource information; the receiving module being further configured to receive the downlink data from the first terminal device.

[0038] The communication apparatus provided in the fifth aspect above can receive first resource information from a network device indicating resources for downlink data of the communication apparatus. Based on the first resource information, the communication apparatus receives downlink data from the network device and downlink data from a first terminal device of the network device. Thus, in addition to receiving downlink data from the network device, the communication apparatus can also receive downlink data from the first terminal device, improving the reliability of data reception. Furthermore, the resources for the downlink data of the communication apparatus are included in the overlapping bandwidth portion of the first terminal device and the communication apparatus. Therefore, when the network device sends downlink data, both the first terminal device and the communication apparatus can receive the downlink data, reducing the power consumption of the network device, reducing data transmission resource overhead, and improving the transmission efficiency of downlink cooperation.

[0039] In one possible implementation, the receiving module is further configured to receive first configuration information from the network device, wherein the first configuration information is used to indicate resources for downlink control information of the communication device; specifically, the receiving module is configured to receive the first resource information from the network device regarding the resources for downlink control information of the communication device, wherein the first resource information includes the downlink control information of the communication device. Based on the above-described communication device, the communication device can receive first configuration information from the network device indicating resources for downlink control information of the communication device, thus enabling the communication device to receive downlink control information from the network device regarding the resources for downlink control information of the communication device.

[0040] In a sixth aspect, embodiments of this application provide a communication device, the communication device comprising: a transmitting module; the transmitting module being configured to transmit first resource information to a first terminal device and a second terminal device, wherein the first resource information is used to indicate downlink data resources of the second terminal device, the downlink data resources of the second terminal device being included in the overlapping bandwidth portion of the first terminal device and the second terminal device; the transmitting module being further configured to transmit downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information.

[0041] The communication apparatus provided in the sixth aspect above can send first resource information to a first terminal device and a second terminal device to indicate resources for downlink data of the second terminal device, and send downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information. In this way, when the communication apparatus sends downlink data of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink data of the second terminal device, thereby reducing the power consumption of the communication apparatus, reducing the resource consumption of data transmission, and improving the transmission efficiency of downlink cooperation.

[0042] In one possible implementation, the sending module is further configured to send first configuration information to the first terminal device and the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; specifically, the sending module is configured to send the first resource information to the first terminal device and the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above communication device, the communication device can send the first configuration information for indicating the resources of the downlink control information of the second terminal device to the first terminal device and the second terminal device, so that the first terminal device and the second terminal device can receive the downlink control information of the second terminal device from the communication device on the resources of the downlink control information of the second terminal device. In this way, when the communication device sends the downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the communication device and reducing the resource consumption of control information transmission.

[0043] In one possible implementation, the sending module is further configured to send second configuration information to the first terminal device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device, and the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device; the sending module is further specifically configured to send the first resource information to the first terminal device and the second terminal device on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. Based on the above communication device, the communication device can send the second configuration information to the first terminal device to indicate the resources of the downlink control information of the first terminal device, so that the first terminal device knows the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, and receives the first resource information from the communication device on the overlapping resources. In this way, when the communication device sends the downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the communication device and the resource consumption of control information transmission.

[0044] In one possible implementation, the second configuration information includes the configuration of the bandwidth portion of the first terminal device; the first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth portion configuration of the second terminal device relative to the bandwidth portion configuration of the first terminal device. Based on the above communication device, the communication device can indicate to the first terminal device, through the bandwidth portion configuration of the first terminal device, the offset of the bandwidth portion configuration of the second terminal device relative to the bandwidth portion configuration of the first terminal device, and the configuration of the control resource set of the second terminal device, the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, so that the first terminal device receives the first resource information from the communication device on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. In this way, when the communication device sends downlink control information of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink control information of the second terminal device, reducing the power consumption of the communication device and reducing the resource consumption of control information transmission.

[0045] In one possible implementation, the first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device. Based on the above-described communication device, the communication device can use the first configuration information, including the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device, to indicate the resources of the downlink control information of the second terminal device to the first terminal device. This allows the first terminal device to receive the first resource information from the communication device on the resources of the downlink control information of the second terminal device. Thus, when the communication device sends downlink control information of the second terminal device once, both the first and second terminal devices can receive the downlink control information of the second terminal device, reducing the power consumption of the communication device and the resource consumption of control information transmission.

[0046] In one possible implementation, the sending module is further configured to send second configuration information to the first terminal device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device; the sending module is further specifically configured to send first resource information to the first terminal device on the resources of the downlink control information of the first terminal device, wherein the first resource information includes the downlink control information of the first terminal device, and the downlink control information of the first terminal device is used to indicate the resources of the downlink data of the second terminal device. Based on the above communication device, the communication device can send first resource information indicating the resources of the downlink data of the second terminal device to the first terminal device on the resources of the downlink control information of the first terminal device indicated by the second configuration information, so that the first terminal device can receive downlink data from the second terminal device on the resources of the downlink data of the second terminal device. In this way, when the communication device sends downlink data of the second terminal device once, both the first terminal device and the second terminal device can receive the downlink data of the second terminal device, reducing the power consumption of the communication device and the resource consumption of data transmission.

[0047] In one possible implementation, the sending module is further configured to send first configuration information to the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the sending module is further specifically configured to send the first resource information to the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device. Based on the above communication device, the communication device can send first configuration information for indicating the resources of the downlink control information of the second terminal device to the second terminal device, so that the second terminal device can receive the downlink control information from the network device on the resources of the downlink control information of the second terminal device.

[0048] In one possible implementation, the resources of the downlink control information of the first terminal device do not overlap with the resources of the downlink control information of the second terminal device. Based on the above-described communication device, when the resources of the downlink control information of the first terminal device and the downlink control information of the second terminal device do not overlap, the communication device can send first resource information to the first terminal device on the resources of the downlink control information of the first terminal device to indicate the resources of the downlink data of the second terminal device. This allows the first terminal device to receive the downlink data from the second terminal device on the resources of the downlink data of the second terminal device. In this way, when the communication device sends downlink data from the second terminal device once, both the first and second terminal devices can receive the downlink data from the second terminal device, reducing the power consumption of the communication device and the resource consumption of data transmission.

[0049] In one possible implementation, the transmitting module is further configured to send a group identifier to the first terminal device, wherein the group identifier is used to descramble the downlink control information received by the first terminal device. Based on the above-described communication device, the communication device can send a group identifier to the first terminal device for descrambling the downlink control information received by the first terminal device, so that the first terminal device can know whether it should send the received downlink data to the second terminal device based on the group identifier.

[0050] In a seventh aspect, embodiments of this application provide a communication device, including: a processor coupled to a memory for storing programs or instructions, wherein when the programs or instructions are executed by the processor, the device implements the method described in the first aspect or any possible implementation of the first aspect.

[0051] Eighthly, embodiments of this application provide a communication device, including: a processor coupled to a memory for storing programs or instructions, wherein when the program or instructions are executed by the processor, the device implements the method described in the second aspect above, or any possible implementation of the second aspect.

[0052] Ninthly, embodiments of this application provide a communication device, including: a processor coupled to a memory for storing programs or instructions, wherein when the programs or instructions are executed by the processor, the device implements the method described in the third aspect above, or any possible implementation of the third aspect.

[0053] In a tenth aspect, embodiments of this application provide a communication device for implementing the method described in the first aspect or any possible implementation of the first aspect.

[0054] Eleventhly, embodiments of this application provide a communication device for implementing the method described in the second aspect above, or in any possible implementation of the second aspect.

[0055] In a twelfth aspect, embodiments of this application provide a communication device for implementing the method described in the third aspect or any possible implementation of the third aspect.

[0056] In a thirteenth aspect, embodiments of this application provide a computer-readable medium having a computer program or instructions stored thereon, which, when executed, cause a computer to perform the methods described in the first aspect or any possible implementation of the first aspect.

[0057] In a fourteenth aspect, embodiments of this application provide a computer-readable medium having a computer program or instructions stored thereon, which, when executed, cause a computer to perform the methods described in the second aspect above, or any possible implementation of the second aspect.

[0058] In a fifteenth aspect, embodiments of this application provide a computer-readable medium having a computer program or instructions stored thereon, which, when executed, cause a computer to perform the methods described in the third aspect or any possible implementation of the third aspect.

[0059] In a sixteenth aspect, embodiments of this application provide a computer program product comprising computer program code, which, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0060] In a seventeenth aspect, embodiments of this application provide a computer program product comprising computer program code, which, when executed on a computer, causes the computer to perform the methods described in the second aspect above, or any possible implementation of the second aspect.

[0061] Eighteenthly, embodiments of this application provide a computer program product including computer program code, which, when run on a computer, causes the computer to perform the methods described in the third aspect or any possible implementation of the third aspect.

[0062] In a nineteenth aspect, embodiments of this application provide a chip, including: a processor coupled to a memory, the memory being used to store programs or instructions, which, when executed by the processor, cause the chip to implement the method described in the first aspect or any possible implementation of the first aspect.

[0063] In a twentieth aspect, embodiments of this application provide a chip, comprising: a processor coupled to a memory, the memory being used to store programs or instructions, wherein when the program or instructions are executed by the processor, the chip causes the chip to implement the method described in the second aspect above, or any possible implementation of the second aspect.

[0064] In a twentieth aspect, embodiments of this application provide a chip, comprising: a processor coupled to a memory, the memory being used to store programs or instructions, wherein when the program or instructions are executed by the processor, the chip causes the chip to implement the method described in the third aspect above, or any possible implementation of the third aspect.

[0065] In a twentieth aspect, embodiments of this application provide a communication system. This system includes the apparatus described in the fourth aspect and / or the apparatus described in the fifth aspect and / or the apparatus described in the sixth aspect; or the system includes the apparatus described in the seventh aspect and / or the apparatus described in the eighth aspect and / or the apparatus described in the ninth aspect; or the system includes the apparatus described in the tenth aspect and / or the apparatus described in the eleventh aspect and / or the apparatus described in the twelfth aspect.

[0066] It is understood that any of the communication devices, chips, computer-readable media, computer program products or communication systems provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of the communication system architecture provided in the embodiments of this application;

[0068] Figure 2 This is a schematic diagram of the hardware structure of the communication device provided in the embodiments of this application;

[0069] Figure 3 Flowchart of the communication method provided in the embodiments of this application Figure 1 ;

[0070] Figure 4 This is a schematic diagram of the bandwidth portions of the first terminal device and the second terminal device provided in the embodiments of this application. Figure 1 ;

[0071] Figure 5 Flowchart of the communication method provided in the embodiments of this application Figure 2 ;

[0072] Figure 6 A schematic diagram of the bandwidth portion of the second terminal device provided in an embodiment of this application;

[0073] Figure 7 Flowchart of the communication method provided in the embodiments of this application Figure 3 ;

[0074] Figure 8 Flowchart of the communication method provided in the embodiments of this application Figure 4 ;

[0075] Figure 9 This is a schematic diagram of the bandwidth portions of the first terminal device and the second terminal device provided in the embodiments of this application. Figure 2 ;

[0076] Figure 10 Schematic diagram of the communication device provided in the embodiments of this application Figure 1 ;

[0077] Figure 11 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 ;

[0078] Figure 12 Schematic diagram of the communication device provided in the embodiments of this application Figure 3 ;

[0079] Figure 13 This is a schematic diagram of the composition of a communication system provided in an embodiment of this application. Detailed Implementation

[0080] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0081] The method provided in this application can be used in various communication systems. For example, the communication system can be a long-term evolution (LTE) system, a 5th generation (5G) communication system, an NR system, a wireless-fidelity (WiFi) system, a 3rd generation partnership project (3GPP) related communication system, and future evolution communication systems, etc., without limitation. The following only uses... Figure 1 Taking the communication system 10 shown as an example, the method provided in the embodiments of this application will be described.

[0082] like Figure 1 The diagram shown is a schematic diagram of the architecture of the communication system 10 provided in an embodiment of this application. Figure 1 In this context, the communication system 10 may include one or more network devices 101 (only one is shown) and terminal devices 102-104 that can communicate with the network devices 101. Figure 1This is merely an illustrative diagram and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.

[0083] exist Figure 1 In a network interface, network devices provide wireless access services to terminal devices. Specifically, each network device corresponds to a service coverage area. Terminal devices entering this area can communicate with the network device via the Uu port to receive the wireless access services provided by the network device. Communication between terminal devices and network devices can be achieved through a Uu port link. The Uu port link can be divided into uplink (UL) and downlink (DL) based on the direction of data transmission. UL transmits uplink data from the terminal device to the network device, while DL transmits downlink data from the network device to the terminal device. For example: Figure 1 In this system, terminal device 103 is located within the coverage area of ​​network device 101. Network device 101 can send downlink data to terminal device 103 via DL, and terminal device 103 can send uplink data to network device 101 via UL.

[0084] Terminal devices can communicate with each other via direct communication links. These direct communication links between terminal devices can be called sidelinks (SL). For example, taking the direct communication link between terminal devices as a sidelink as an example... Figure 1 Terminal device 102 and terminal device 103 can communicate via a side link, and terminal device 104 can communicate with terminal device 103 via a side link.

[0085] Figure 1The terminal devices in the network can cooperate with each other to improve the reliability of data reception. Taking the cooperation between terminal devices 102 and 103 to improve the reliability of data 1 received by terminal device 103 as an example, network device 101 sends data 1 to both terminal devices 102 and 103. After receiving data 1 from network device 101, terminal device 102 forwards data 1 to terminal device 103. Terminal device 103 then receives both data 1 from network device 101 and data 1 from terminal device 102, thus improving the reliability of data 1 received by terminal device 103. The cooperating terminal devices can form user cooperation groups; for example, terminal devices 102 and 103 can form a user cooperation group. Each user cooperation group has a unique group identifier. Within each user cooperation group, the target receiving device (e.g., terminal device 103) can be referred to as a target user equipment (TUE), target terminal device, or target terminal, etc., without restriction. In each user cooperation group, the terminal equipment that assists TUE in receiving data (e.g., terminal equipment 102) may be referred to as cooperation user equipment (CUE), cooperation terminal equipment, or cooperation terminal, etc., without restriction.

[0086] Understandably, multiple different user collaboration groups can exist within the same cell. Each user collaboration group can include one TUE and one or more CUEs. A TUE in one user collaboration group can be a CUE in another user collaboration group, and vice versa; there are no restrictions.

[0087] Figure 1Network devices, such as network device 101, can be any device with wireless transceiver capabilities. These include, but are not limited to: evolved Node Bs (NodeBs, eNBs, or e-NodeBs) in LTE, base stations (gNodeBs or gNBs) or transmission receiving points / transmission reception points (TRPs) in NR, base stations evolved later in 3GPP, access nodes, wireless relay nodes, and wireless backhaul nodes in WiFi systems. Base stations can be: macro base stations, micro base stations, pico base stations, small cells, relay stations, or balloon stations, etc. Multiple base stations can support networks using the same technology mentioned above, or they can support networks using different technologies mentioned above. A base station can contain one or more co-located or non-co-located TRPs. Network devices can also be radio controllers, centralized units (CUs), and / or distributed units (DUs) in cloud radio access network (CRAN) scenarios. Network devices can also be servers, wearable devices, machine communication devices, or vehicle-mounted devices, etc. The following explanation uses network devices as base stations as an example. These multiple network devices can be base stations of the same type or different types. A base station can communicate with a terminal device, or it can communicate with a terminal device through a relay station. A terminal device can communicate with multiple base stations using different technologies. For example, a terminal device can communicate with a base station supporting LTE networks, or it can communicate with a base station supporting 5G networks, and it can also support dual connections with both LTE and 5G network base stations.

[0088] Figure 1The terminal devices in this application, such as terminal device 102, terminal device 103, or terminal device 104, are devices with wireless transceiver capabilities. They can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; they can also be deployed on water (such as ships); and they can be deployed in the air (such as airplanes, balloons, and satellites). These terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, terminal devices in industrial control, vehicle-mounted terminal devices, terminal devices in self-driving cars, terminal devices in assisted driving, terminal devices in remote medical care, terminal devices in smart grids, terminal devices in transportation safety, terminal devices in smart cities, terminal devices in smart homes, etc. The embodiments in this application do not limit the application scenarios. Terminal equipment is sometimes also referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, UE terminal equipment, wireless communication equipment, machine terminal equipment, UE agent, or UE device, etc. Terminal equipment can be fixed or mobile.

[0089] The aforementioned relay can be either the aforementioned network equipment or the aforementioned terminal equipment, without restriction.

[0090] By way of example and not limitation, the terminal device in this application can be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0091] In this application, the terminal device can be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, and its main technical feature is connecting objects to networks through communication technologies, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. The terminal device in this application can be a terminal device in machine-type communication (MTC). The terminal device in this application can be an on-board module, on-board component, on-board chip, or on-board unit built into a vehicle as one or more components or units. The vehicle can implement the methods of this application through the built-in on-board module, on-board component, on-board chip, or on-board unit. Therefore, the embodiments of this application can be applied to vehicle networking, such as vehicle-to-everything (V2X), long-term evolution vehicle (LTE-V) communication, and vehicle-to-vehicle (V2V) communication.

[0092] Figure 1 The communication system 10 shown is for illustrative purposes only and is not intended to limit the technical solutions of this application. Those skilled in the art should understand that in specific implementations, the communication system 10 may also include other devices, and the number of network devices and terminal devices can be determined according to specific needs without limitation.

[0093] Optionally, embodiments of this application Figure 1 Each network element in the device, such as network device 101, terminal device 102, terminal device 103, or terminal device 104, can be a functional module within the device. It is understood that the functional module can be a component in a hardware device, such as a communication chip or communication component in a terminal device or network device, or a software functional module running on hardware, or a virtualization function instantiated on a platform (e.g., a cloud platform).

[0094] For example, Figure 1 Each network element in the network can be accessed through Figure 2 This is achieved through the communication device 200. Figure 2 The diagram shows a hardware structure of a communication device applicable to embodiments of this application. The communication device 200 may include at least one processor 201, a communication line 202, a memory 203, and at least one communication interface 204.

[0095] The processor 201 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.

[0096] Communication line 202 may include a path for transmitting information between the aforementioned components, such as a bus.

[0097] Communication interface 204 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet interface, radio access network (RAN) interface, wireless local area network (WLAN) interface, etc.

[0098] The memory 203 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. The memory may exist independently and be connected to the processor via communication line 202. The memory may also be integrated with the processor. The memory provided in this application embodiment is generally non-volatile. The memory 203 is used to store computer execution instructions involved in the scheme of this application and is controlled by the processor 201 for execution. The processor 201 is used to execute computer execution instructions stored in the memory 203, thereby implementing the method provided in the embodiments of this application.

[0099] Optionally, the computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0100] In a specific implementation, as one embodiment, the processor 201 may include one or more CPUs, for example... Figure 2 CPU0 and CPU1 in the CPU.

[0101] In a specific implementation, as one example, the communication device 200 may include multiple processors, such as... Figure 2 Processors 201 and 207 are described herein. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor here may refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0102] In a specific implementation, as one embodiment, the communication device 200 may further include an output device 205 and an input device 206. The output device 205 communicates with the processor 201 and can display information in various ways. For example, the output device 205 may be a liquid crystal display (LCD), a light-emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc. The input device 206 communicates with the processor 201 and can receive user input in various ways. For example, the input device 206 may be a mouse, keyboard, touchscreen device, or sensing device, etc.

[0103] In specific implementations, the communication device 200 can be a desktop computer, a portable computer, a network server, a handheld digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or something similar. Figure 2 Devices with similar structures. This application does not limit the type of communication device 200 to any particular embodiment.

[0104] The following is combined Figure 1 and Figure 2 The communication method provided in the embodiments of this application will be described in detail. The network element in the following embodiments may have... Figure 2 The component shown.

[0105] It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of this application are just examples. Other names may be used in the specific implementation. This application does not limit them in this respect.

[0106] It is understood that in the embodiments of this application, the first terminal device, the second terminal device, or the network device may execute some or all of the steps in the embodiments of this application. These steps are merely examples, and the embodiments of this application may also execute other steps or variations thereof. Furthermore, the steps may be executed in different orders as presented in the embodiments of this application, and it is not necessary to execute all the steps in the embodiments of this application.

[0107] The resources in this application may also be referred to as physical resources, transmission resources, etc. Physical resources may include time-domain resources and / or frequency-domain resources. For example, the time-domain resources included in the resource may include at least one frame, at least one sub-frame, at least one slot, at least one mini-slot, at least one time unit, or at least one time-domain symbol, etc. For example, the frequency-domain resources included in the resource may include at least one carrier, at least one component carrier (CC), at least one bandwidth part (BWP), at least one resource block group (RBG), at least one physical resource-block group (PRG), at least one resource block (RB), or at least one sub-carrier (SC), etc.

[0108] It is understood that the aforementioned physical resources can be baseband physical resources, which can be used by the baseband chip. These physical resources can also be air interface physical resources. Furthermore, they can be intermediate frequency (IF) or radio frequency (RF) physical resources.

[0109] like Figure 3 As shown, this is a communication method provided in an embodiment of the present application, which includes steps 301-303.

[0110] Step 301: The network device sends the first resource information to the first terminal device and the second terminal device.

[0111] The network device can be Figure 1 Network device 101 in the text can also be Figure 1 The network device 101 can be a component within the network device 101. For example, the network device can be a processor, a chip, or a chip system within the network device 101, etc., without limitation.

[0112] The first terminal device may be Figure 1Any CUE in the CUE can also be a component within the CUE. For example, the first terminal device can be a processor, a chip, or a chip system within the CUE, etc., without limitation.

[0113] The second terminal device can be Figure 1 The TUE that is in the same user collaboration group as the first terminal device can also be a component within that TUE. For example, the second terminal device can be a processor, a chip, or a chip system within that TUE, etc., without limitation.

[0114] The first resource information is used to indicate the resources of the downlink data of the second terminal device. The resources of the downlink data of the second terminal device are included in the overlapping bandwidth part (BWP) of the first and second terminal devices. The BWP is a set of physical resource blocks, which is a subset of the common resource blocks of a given numberology on a given carrier.

[0115] The BWP of the first terminal device and the BWP of the second terminal device can be as follows: Figure 4 As shown. Figure 4 In (a), region 401 is the BWP of the second terminal device, region 402 is the BWP of the first terminal device, and the downlink data resources of the second terminal device are in the overlapping part of region 401 and region 402. Figure 4 In (b), region 403 is the BWP of the second terminal device, region 404 is the BWP of the first terminal device, the BWP of the second terminal device includes the BWP of the first terminal device, and the downlink data resources of the second terminal device are in the overlapping part of region 403 and region 404, that is, the downlink data resources of the second terminal device are in region 404. Figure 4 In (c), region 405 is the BWP of the second terminal device, region 406 is the BWP of the first terminal device, the BWP of the first terminal device includes the BWP of the second terminal device, and the downlink data resources of the second terminal device are in the overlapping part of region 405 and region 406, that is, the downlink data resources of the second terminal device are in region 405.

[0116] Understandable. Figure 4 The positional relationship between the BWP of the first terminal device and the BWP of the second terminal device shown is merely exemplary. Other positional relationships between the BWP of the first terminal device and the BWP of the second terminal device are not limited.

[0117] Optionally, the BWP of the first terminal device and / or the BWP of the second terminal device can be predefined or configured by the network device for the first terminal device and / or the second terminal device.

[0118] Understandably, in order to allow the first terminal device and the second terminal device to have overlapping BWPs, the network device can configure BWPs with overlapping parts for the first terminal device and the second terminal device when configuring BWPs; or, when predefining BWPs for the first terminal device and the second terminal device, it can predefine BWPs with overlapping parts for the first terminal device and the second terminal device.

[0119] Optionally, the network device or the second terminal device selects a CUE for the second terminal device. For example, when the second terminal device is determined to be a TUE, the network device selects a CUE for the second terminal device and informs the second terminal device of the selected CUE. For instance, when the network device determines to send data to the second terminal device, the network device selects a first terminal device with a better signal as the CUE and sends the identifier of the first terminal device to the second terminal device. Alternatively, when the second terminal device is determined to be a TUE, the second terminal device selects a CUE for itself and informs the network device of the selected CUE. For instance, when the network device determines to send data to the second terminal device, the second terminal device selects a first terminal device that is closer to it as the CUE and sends the identifier of the first terminal device to the network device.

[0120] Correspondingly, on the first terminal device side, the first terminal device receives first resource information from the network device. On the second terminal device side, the second terminal device receives first resource information from the network device.

[0121] Step 302: The network device sends downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information.

[0122] Optionally, the network device sends downlink data of the second terminal device to both the first and second terminal devices on the resources of downlink data of the second terminal device indicated by the first resource information.

[0123] Optionally, the network device sending downlink data of the second terminal device to the first terminal device and the second terminal device can also be described as the network device sending the downlink data channel of the second terminal device to the first terminal device and the second terminal device. Here, the downlink data channel of the second terminal device is used to carry the downlink data of the second terminal device. The downlink data channel of the second terminal device can be the physical downlink shared channel (PDSCH) of the second terminal device. The resources of the downlink data of the second terminal device can also be described as the resources of the PDSCH of the second terminal device, the transmission resources of the PDSCH of the second terminal device, or the resources for transmitting the PDSCH of the second terminal device, etc., without limitation.

[0124] Correspondingly, on the first terminal device side, the first terminal device receives downlink data from the second terminal device from the network device according to the first resource information. For example, the first terminal device receives downlink data from the second terminal device from the network device on the resource indicated by the first resource information.

[0125] The first terminal device receiving downlink data from the second terminal device in the network device can also be described as the first terminal device receiving downlink data channel from the second terminal device in the network device. The downlink data channel of the second terminal device can be the PDSCH of the second terminal device.

[0126] Correspondingly, on the second terminal device side, the second terminal device receives downlink data from the network device based on the first resource information. For example, the second terminal device receives downlink data from the network device on the resource indicated by the first resource information.

[0127] The second terminal device receiving downlink data from the network device can also be described as the second terminal device receiving downlink data channels from the network device. These downlink data channels can be the PDSCH of the second terminal device.

[0128] Step 303: The first terminal device sends the downlink data of the second terminal device to the second terminal device.

[0129] Optionally, the first terminal device sends its downlink data to the second terminal device on the resources of the sidelink. The resources of the sidelink can be configured by the network device for the first and second terminal devices, or the resources of the sidelink can be predefined and are not limited.

[0130] The first terminal device sends downlink data to the second terminal device, which can also be described as the first terminal device sending a sidelink data channel to the second terminal device. This sidelink data channel carries the downlink data of the second terminal device. The sidelink data channel can be a physical sidelink shared channel (PSSCH) or other data channels, such as data channels on unlicensed spectrum; there are no restrictions.

[0131] Correspondingly, on the second terminal device side, the second terminal device receives downlink data from the first terminal device. For example, the second terminal device receives downlink data from the first terminal device on resources of the side link.

[0132] The second terminal device receives downlink data from the first terminal device, which can also be described as the second terminal device receiving sidelink data from the first terminal device.

[0133] Understandably, after receiving downlink data from the first terminal device and downlink data from the network device, the second terminal device can decode the received downlink data from the first terminal device, or decode the received downlink data from the network device, or jointly decode the downlink data from the first terminal device and the downlink data from the network device, without limitation.

[0134] based on Figure 3 The method shown allows a network device to send first resource information to a first terminal device and a second terminal device, and then send downlink data of the second terminal device to both devices based on the first resource information. Upon receiving the first resource information, the first and second terminal devices can receive the downlink data from the network device based on the first resource information. The first terminal device can also forward the downlink data to the second terminal device. Thus, after sending the first resource information to both devices, the network device can send downlink data of the second terminal device once on the resource indicated by the first resource information. Because the first resource information is information indicating the resource for the downlink data of the second terminal device, the overhead of the network device sending the first resource information is much less than the overhead of the network device sending the downlink data of the second terminal device. Therefore, compared to the method where the network device sends the downlink data of the second terminal device to both devices separately, the overhead of the network device is reduced.

[0135] Further optional, in Figure 3 In a first embodiment of the method shown, the network device can send resources containing downlink control information of the second terminal device to both the first and second terminal devices, so that the first and second terminal devices can receive downlink control information from the network device on the resources containing the downlink control information of the second terminal device. Specifically, as shown... Figure 5 As shown, Figure 3 The method shown also includes optional steps 501 and 502.

[0136] Step 501: The network device sends the first configuration information to the first terminal device and the second terminal device.

[0137] The first configuration information is used to indicate the resources for downlink control information of the second terminal device. The first configuration information may include the configuration of the BWP of the second terminal device, the configuration of the control resource set (CORESET) of the second terminal device, and the configuration of the search space of the second terminal device.

[0138] The configuration of the BWP of the second terminal device can be used to indicate the frequency domain position of the BWP. For example, the configuration of the BWP of the second terminal device may include the frequency domain position of the common reference point point A, a second offset, and a first resource indicator value (RIV). The second offset may be the offset of the lowest resource block (RB) of the virtual carrier of the second terminal device relative to the frequency domain position of point A. The first RIV can be used to indicate a third offset and the number of RBs in the BWP of the second terminal device. The third offset is the offset of the starting RB of the BWP of the second terminal device relative to the lowest RB of the virtual carrier of the second terminal device. For example, the relationship between the frequency domain position of the BWP of the second terminal device, the frequency domain position of point A, the second offset, and the third offset can be as follows: Figure 6 As shown, the frequency domain starting position of the BWP of the second terminal device can be determined by the frequency domain position of point A, the second offset, and the third offset. The frequency domain position of the BWP of the second terminal device can be determined by the frequency domain starting position of the BWP of the second terminal device and the number of RBs in the BWP of the second terminal device. The virtual carrier of the second terminal device can also be referred to as the logical carrier of the second terminal device, the specific carrier of the second terminal device, the available RB of the second terminal device, the available bandwidth of the second terminal device, etc. The second terminal device can determine the resource grid, orthogonal frequency division multiplexing (OFDM) baseband signal, place the radio frequency (RF) transceiver, and / or perform filtering based on the virtual carrier.

[0139] The configuration of the CORESET of the second terminal device can be used to indicate the location of the downlink control information resources of the second terminal device in the BWP of the second terminal device. For example, the configuration of the CORESET of the second terminal device may include a bit sequence indicating the location of the downlink control information resources in the BWP of the second terminal device. For instance, this bit sequence corresponds to an RB in the BWP of the second terminal device; if the i-th bit in the bit sequence is 1, then the RB corresponding to the i-th bit can be used to transmit the downlink control information of the second terminal device, where i is an integer greater than or equal to 0. The configuration of the CORESET of the second terminal device can also be used to indicate the number of symbols occupied by the downlink control information of the second terminal device in the time domain. For example, the configuration of the CORESET of the second terminal device may also include the number of symbols occupied by the downlink control information of the second terminal device in the time domain.

[0140] The search space configuration of the second terminal device can be used to instruct the second terminal device to blindly detect the set of aggregation level (AL) and control channel element (CCE) resource locations of the physical downlink control channel (PDCCH) of the second terminal device. For example, the search space configuration of the second terminal device may include the set of AL and CCE resource locations of the PDCCH of the second terminal device.

[0141] Optionally, in step 301, the network device sends first resource information to the first terminal device and the second terminal device, including: the network device sending the first resource information to the first terminal device and the second terminal device based on the downlink control information resources of the second terminal device. The first resource information includes the downlink control information of the second terminal device. The downlink control information of the second terminal device is used to indicate the resources for downlink data of the second terminal device. The downlink control information of the second terminal device may be carried in the PDCCH of the second terminal device. The resources of the downlink control information of the second terminal device may also be referred to as the transmission resources of the downlink control information of the second terminal device, the resources for transmitting the downlink control information of the second terminal device, the resources of the PDCCH of the second terminal device, the transmission resources of the PDCCH of the second terminal device, or the resources for transmitting the PDCCH of the second terminal device, without limitation.

[0142] Optionally, the downlink control information of the second terminal device includes a resource allocation field and a modulation and coding scheme (MCS) field. The resource allocation field indicates the resources of the downlink data of the second terminal device, and the MCS field indicates the MCS of the downlink data of the second terminal device.

[0143] Optionally, the network device sends downlink control information of the second terminal device to the first terminal device and the second terminal device, including: the network device scrambling the downlink control information of the second terminal device with a group identifier, and sending the scrambled downlink control information of the second terminal device to the first terminal device and the second terminal device.

[0144] The identifier can be an identifier for a user cooperation group. This user cooperation group may include a first terminal device and a second terminal device. This identifier can be used to descramble downlink control information received by the first terminal device. The identifier can be configured by the network device or it can be an identifier for the second terminal device; there is no limitation on this.

[0145] Correspondingly, on the first terminal device side, the first terminal device receives first configuration information from the network device and determines the resources for the downlink control information of the second terminal device based on the first configuration information. Subsequently, the first terminal device can receive downlink control information from the network device on the resources of the downlink control information of the second terminal device.

[0146] Optionally, the first terminal device receives first resource information from the network device, including: the first terminal device receives the first resource information from the network device on the resources of the downlink control information of the second terminal device. The first resource information includes the downlink control information of the second terminal device.

[0147] Correspondingly, on the second terminal device side, the second terminal device receives first configuration information from the network device and determines the resources for the second terminal device's downlink control information based on the first configuration information. Subsequently, the second terminal device can receive downlink control information from the network device on the resources of the second terminal device's downlink control information.

[0148] Optionally, the second terminal device receives first resource information from the network device, including: the second terminal device receives the first resource information from the network device on the resources of the downlink control information of the second terminal device. The first resource information includes the downlink control information of the second terminal device.

[0149] Step 502: The network device sends a group identifier to the first terminal device.

[0150] Understandably, step 502 can be performed before the first terminal device descrambles the downlink control information received by the first terminal device. This application embodiment does not limit step 502 to... Figure 5 The execution order in the method shown is not limited; for example, step 502 can be executed after step 501 or before step 501.

[0151] Correspondingly, on the first terminal device side, the first terminal device receives a group identifier from the network device. Subsequently, the first terminal device can descramble the downlink control information received by the first terminal device according to the group identifier. If the downlink control information is successfully descrambled, the first terminal device will forward the downlink data received according to the downlink control information to the second terminal device.

[0152] based on Figure 5 The method shown allows the network device to send first configuration information to a first terminal device and a second terminal device. After receiving the first configuration information from the network device, the first terminal device and the second terminal device can determine the downlink control information resources of the second terminal device based on the first configuration information, and receive the downlink control information from the network device on the downlink control information resources of the second terminal device. In this way, when the network device sends the downlink control information of the second terminal device once on the downlink control information resources of the second terminal device, both the first terminal device and the second terminal device can receive the downlink control information, thus reducing the overhead of the network device.

[0153] Further optional, in Figure 3 In a second embodiment of the method shown, the network device can send downlink control information resources of the first terminal device to the first terminal device, and indicate the downlink control information resources of the second terminal device to the first terminal device through the downlink control information resources of the first terminal device, so that the first terminal device can receive downlink control information from the second terminal device from the network device on the downlink control information resources of the second terminal device. Specifically, as shown... Figure 7 As shown, Figure 3 The method shown also includes optional steps 701-704.

[0154] Step 701: The network device sends the second configuration information to the first terminal device.

[0155] The second configuration information can be used to indicate resources for downlink control information of the first terminal device. The second configuration information may include the BWP configuration and the CORESET configuration of the first terminal device.

[0156] The configuration of the BWP of the first terminal device can be used to indicate the frequency domain position of the BWP. For example, the configuration of the BWP of the first terminal device may include the frequency domain position of the common reference point point A, a fourth offset, and a second RIV. The fourth offset may be the offset of the lowest RB of the virtual carrier of the first terminal device relative to the frequency domain position of point A. The second RIV can be used to indicate a fifth offset and the number of RBs in the BWP of the first terminal device. The fifth offset is the offset of the starting RB of the BWP of the first terminal device relative to the lowest RB of the virtual carrier of the first terminal device. The virtual carrier of the first terminal device may also be referred to as the logical carrier of the first terminal device, a specific carrier of the first terminal device, an available RB of the first terminal device, an available bandwidth of the first terminal device, etc. The first terminal device can determine the resource grid, OFDM baseband signal, place the RF transceiver, and / or perform filtering based on the virtual carrier.

[0157] The configuration of the CORESET of the first terminal device can be used to indicate the location of the downlink control information resources of the first terminal device in the BWP of the first terminal device. For example, the configuration of the CORESET of the first terminal device may include a bit sequence indicating the location of the downlink control information resources in the BWP of the first terminal device. For instance, this bit sequence corresponds to an RB in the BWP of the first terminal device; if the j-th bit in the bit sequence is 1, then the RB corresponding to the j-th bit can be used to transmit the downlink control information of the first terminal device, where j is an integer greater than or equal to 0. The configuration of the CORESET of the first terminal device can also be used to indicate the number of symbols occupied by the downlink control information of the first terminal device in the time domain. For example, the configuration of the CORESET of the first terminal device may also include the number of symbols occupied by the downlink control information of the first terminal device in the time domain.

[0158] Optionally, the second configuration information may also include the configuration of the search space of the first terminal device.

[0159] The configuration of the search space of the first terminal device can be used to instruct the first terminal device to blindly detect the set of AL and CCE resource locations of the PDCCH of the first terminal device. For example, the configuration of the search space of the first terminal device may include the set of AL and CCE resource locations of the PDCCH of the first terminal device.

[0160] Correspondingly, on the first terminal device side, the first terminal device receives second configuration information from the network device.

[0161] Step 702: The network device sends the first configuration information to the first terminal device.

[0162] The first configuration information can be used to indicate the resources for downlink control information of the second terminal device. A description of the first configuration information can be found in the following cases 1-3:

[0163] Case 1: The first configuration information includes the first offset, the configuration of the CORESET of the second terminal device, and the configuration of the search space of the second terminal device.

[0164] The first offset indicates the offset of the BWP configuration of the second terminal device relative to the BWP configuration of the first terminal device. Subsequently, the first terminal device can determine the BWP configuration of the second terminal device based on its own BWP configuration and the first offset.

[0165] The configuration of the CORESET of the second terminal device and the configuration of the search space of the second terminal device in Case 1 can be referred to the corresponding description in step 501 above, and will not be repeated here.

[0166] Case 2: The first configuration information includes the configuration of the BWP of the second terminal device, the sixth offset, and the configuration of the search space of the second terminal device.

[0167] The sixth offset indicates the offset of the CORESET configuration of the second terminal device relative to the CORESET configuration of the first terminal device. Subsequently, the first terminal device can determine the CORESET configuration of the second terminal device based on the CORESET configuration of the first terminal device and the second offset.

[0168] The configuration of the BWP of the second terminal device and the configuration of the search space of the second terminal device in Case 2 can be referred to the corresponding description in step 501 above, and will not be repeated here.

[0169] Case 3: The first configuration information includes the first offset, the sixth offset, and the configuration of the search space of the second terminal device.

[0170] The description of the first offset in Case 3 can be found in Case 1 above. The description of the sixth offset in Case 3 can be found in Case 2 above. The description of the search space configuration of the second terminal device in Case 3 can be found in the corresponding description in step 501 above, and will not be repeated here.

[0171] Correspondingly, on the first terminal device side, the first terminal device receives first configuration information from the network device. Subsequently, the first terminal device can determine, based on the first and second configuration information, the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device, so that the first terminal device can receive the downlink control information from the network device on the resources in the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device.

[0172] Step 703: The network device sends information about the resources that indicate the downlink control information of the second terminal device to the second terminal device.

[0173] The information regarding the resources that indicate downlink control information for the second terminal device may include the configuration of the second terminal device's BWP, the configuration of the second terminal device's CORESET, and the configuration of the second terminal device's search space. The descriptions of the configurations of the second terminal device's BWP, CORESET, and search space are as described in step 501 above and will not be repeated here.

[0174] Optionally, the downlink control information resources of the first terminal device overlap with the downlink control information resources of the second terminal device.

[0175] Optionally, in step 301, the network device sends first resource information to the first terminal device and the second terminal device, including: the network device sending the first resource information to the first terminal device and the second terminal device on resources that overlap with the downlink control information of the first terminal device from the downlink control information of the second terminal device. The first resource information includes the downlink control information of the second terminal device.

[0176] Optionally, the downlink control information of the second terminal device includes a resource allocation field and a modulation and MCS field. The resource allocation field indicates the resources of the downlink data of the second terminal device, and the MCS field indicates the MCS of the downlink data of the second terminal device.

[0177] Optionally, the network device sends downlink control information of the second terminal device to the first terminal device and the second terminal device, including: the network device scrambling the downlink control information of the second terminal device with a group identifier, and sending the scrambled downlink control information of the second terminal device to the first terminal device and the second terminal device.

[0178] The identifier can be an identifier for a user cooperation group. This user cooperation group may include a first terminal device and a second terminal device. This identifier can be used to descramble downlink control information received by the first terminal device. The identifier can be configured by the network device or it can be an identifier for the second terminal device; there is no limitation on this.

[0179] Correspondingly, on the second terminal device side, the second terminal device receives information from the network device regarding resources that indicate the downlink control information of the second terminal device. Subsequently, the second terminal device can determine the resources for its downlink control information based on the information indicating the resources for its downlink control information, and receive the downlink control information from the network device on those resources.

[0180] Step 704: The network device sends a group identifier to the first terminal device.

[0181] Understandably, step 704 can be performed before the first terminal device descrambles the downlink control information received by the first terminal device. This application embodiment does not limit step 704 to... Figure 7 The execution order in the method shown is not limited. For example, step 704 can be executed after step 703, step 704 can be executed before step 701, step 704 can be executed before step 702, or step 704 can be executed before step 703.

[0182] Correspondingly, on the first terminal device side, the first terminal device receives a group identifier from the network device. Subsequently, the first terminal device can descramble the downlink control information received by the first terminal device according to the group identifier. If the downlink control information is successfully descrambled, the first terminal device will forward the downlink data received according to the next control information to the second terminal device.

[0183] based on Figure 7 The method shown allows the network device to send first configuration information and second configuration information to the first terminal device, and to send downlink control information of the second terminal device to both the first and second terminal devices on the resource of downlink control information of the second terminal device that overlaps with the downlink control information of the first terminal device. In this way, the network device sends downlink control information of the second terminal device once on the resource of downlink control information of the second terminal device that overlaps with the downlink control information of the first terminal device, and both the first and second terminal devices can receive the downlink control information, thus reducing the overhead of the network device.

[0184] Further optional, in Figure 3In a third embodiment of the method shown, the network device may indicate the downlink data resources of the second terminal device in the downlink control information given to the first terminal device, so that the first terminal device can receive downlink data from the second terminal device on the downlink data resources of the second terminal device. Specifically, as shown... Figure 8 As shown, Figure 3 The method shown also includes optional steps 801-802.

[0185] Step 801: The network device sends the second configuration information to the first terminal device.

[0186] For a detailed description of step 801, please refer to the description in step 701 above, which will not be repeated here.

[0187] Step 802: The network device sends the first configuration information to the second terminal device.

[0188] For a detailed description of step 802, please refer to the corresponding description in step 501 above, which will not be repeated here.

[0189] Optionally, step 301 can be replaced by steps 803 and 804.

[0190] Step 803: The network device sends the downlink control information of the first terminal device to the first terminal device on the resource of the downlink control information of the first terminal device.

[0191] The downlink control information of the first terminal device is used to indicate the resources of the downlink data of the second terminal device. For example, the downlink control information of the first terminal device includes a resource allocation field and an MCS field. The resource allocation field indexes the resources of the downlink data of the second terminal device based on the BWP start position of the first terminal device. For example, the resource allocation field includes a seventh offset, which indicates the offset of the resources of the downlink data of the second terminal device relative to the BWP start position of the first terminal device. The MCS field indicates the MCS of the downlink data of the first terminal device. The downlink control information of the first terminal device can be carried in the PDCCH of the first terminal device. The resources of the downlink control information of the first terminal device can also be referred to as the transmission resources of the downlink control information of the first terminal device, the resources for transmitting the downlink control information of the first terminal device, the resources of the PDCCH of the first terminal device, the transmission resources of the PDCCH of the first terminal device, or the resources for transmitting the PDCCH of the first terminal device, without limitation.

[0192] Optionally, when the downlink control information of the first terminal device is used to indicate the resources of the downlink data of the second terminal device, the resource allocation field included in the downlink control information of the first terminal device is also used to instruct the first terminal device to forward the downlink data received according to the downlink control information of the first terminal device to the second terminal device.

[0193] Correspondingly, on the first terminal device side, the first terminal device receives downlink control information from the network device on the downlink control information resources of the first terminal device.

[0194] Step 804: The network device sends the downlink control information of the second terminal device to the second terminal device on the resource of the downlink control information of the second terminal device.

[0195] The downlink control information of the second terminal device is used to indicate the resources of the downlink data of the second terminal device. The downlink control information of the second terminal device can be carried in the PDCCH of the second terminal device. The resources of the downlink control information of the second terminal device can also be referred to as the transmission resources of the downlink control information of the second terminal device, the resources for transmitting the downlink control information of the second terminal device, the resources of the PDCCH of the second terminal device, the transmission resources of the PDCCH of the second terminal device, or the resources for transmitting the PDCCH of the second terminal device, without limitation.

[0196] Optionally, the downlink control information of the second terminal device includes a resource allocation field and an MCS field. The resource allocation field indicates the resources available for the downlink data of the second terminal device, and the MCS field indicates the MCS of the downlink data of the second terminal device.

[0197] Optionally, the downlink control information resources of the first terminal device do not overlap with the downlink control information resources of the second terminal device.

[0198] The following is combined Figure 9 This section describes the scenario where the downlink control information resources of the first terminal device and the second terminal device do not overlap. For details, please refer to Examples 1 to 3 below:

[0199] Example 1, such as Figure 9 As shown in (a), area 901 is the BWP of the first terminal device, and area 902 is the BWP of the second terminal device. Figure 9In (a), the downlink control information of the first terminal device and the downlink control information of the second terminal device have different time domain resources, and also different frequency domain resources. The downlink data resources of the second terminal device are in the overlapping part of region 901 and region 902, that is, the downlink data resources of the second terminal device are in the overlapping BWP of the first terminal device and the second terminal device.

[0200] Example 2, such as Figure 9 As shown in (b), area 903 is the BWP of the first terminal device, and area 904 is the BWP of the second terminal device. Figure 9 In (b) of the diagram, the downlink control information of the first terminal device and the downlink control information of the second terminal device have different time-domain resources, but the downlink control information of the first terminal device and the downlink control information of the second terminal device have the same frequency-domain resources. The downlink data resources of the second terminal device are in the overlapping area of ​​region 903 and region 904, that is, the downlink data resources of the second terminal device are in the overlapping BWP of the first terminal device and the second terminal device.

[0201] Example 3: such as Figure 9 As shown in (c), area 905 is the BWP of the first terminal device, and area 906 is the BWP of the second terminal device. Figure 9 In (c), the downlink control information of the first terminal device and the downlink control information of the second terminal device have the same time domain resources, but different frequency domain resources. The downlink data resources of the second terminal device are in the overlapping area of ​​region 905 and region 906, that is, the downlink data resources of the second terminal device are in the overlapping BWP of the first terminal device and the second terminal device.

[0202] Correspondingly, on the second terminal device side, the second terminal device receives downlink control information from the network device on the resource of downlink control information of the second terminal device.

[0203] based on Figure 8 The method shown allows the network device to indicate the downlink data resources of the second terminal device in the control information sent to the first terminal device, so that the first terminal device can determine the downlink data resources of the second terminal device based on the downlink control information. Subsequently, the network device can send the downlink data resources of the second terminal device once, and both the first and second terminal devices can receive the downlink data, reducing the overhead of the network device.

[0204] The above mainly describes the solution provided by the embodiments of this application from the perspective of interaction between various network elements. It is understood that the aforementioned first terminal device, second terminal device, or network device, etc., include hardware structures and / or software modules corresponding to the execution of each function in order to achieve the above functions. Those skilled in the art should readily recognize that, in conjunction with the unit and algorithm operations of the various examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0205] This application embodiment can divide the first terminal device, the second terminal device, or the network device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It is understood that the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0206] For example, when dividing the functional modules using an integrated approach. Figure 10 A schematic diagram of a communication device 100 is shown. The communication device 100 can be a first terminal device or a chip or system-on-a-chip in the first terminal device, and the communication device 100 can be used to perform the functions of the first terminal device involved in the above embodiments.

[0207] As one possible implementation method, Figure 10 The communication device 100 shown includes a receiving module 1001 and a transmitting module 1002.

[0208] The receiving module 1001 is configured to receive first resource information from the network device, wherein the first resource information is used to indicate the resources of downlink data of the second terminal device, and the resources of downlink data of the second terminal device are included in the overlapping bandwidth portion of the communication device 100 and the second terminal device.

[0209] The receiving module 1001 is further configured to receive downlink data from the second terminal device of the network device based on the first resource information.

[0210] The sending module 1002 is used to send the downlink data to the second terminal device.

[0211] Optionally, the receiving module 1001 is further configured to receive first configuration information from the network device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the receiving module 1001 is specifically configured to receive first resource information of the second terminal device from the network device regarding the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device.

[0212] Optionally, the receiving module 1001 is further configured to receive second configuration information from the network device, wherein the second configuration information is used to indicate the resources of the downlink control information of the communication device 100, and the resources of the downlink control information of the communication device 100 overlap with the resources of the downlink control information of the second terminal device; the receiving module 1001 is further specifically configured to receive the first resource information from the network device on the resources of the downlink control information of the second terminal device that overlap with the resources of the downlink control information of the communication device 100.

[0213] Optionally, the second configuration information includes the configuration of the bandwidth portion of the communication device 100; the first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the configuration of the bandwidth portion of the second terminal device relative to the configuration of the bandwidth portion of the communication device 100.

[0214] Optionally, the first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

[0215] Optionally, the receiving module 1001 is further configured to receive second configuration information from the network device, wherein the second configuration information is used to indicate the resources of downlink control information of the communication device 100; the receiving module 1001 is further specifically configured to receive the first resource information from the network device regarding the resources of downlink control information of the communication device 100, wherein the first resource information includes the downlink control information of the communication device 100, and the downlink control information of the communication device 100 is used to indicate the resources of downlink data of the second terminal device.

[0216] Optionally, the downlink control information resources of the communication device 100 do not overlap with the downlink control information resources of the second terminal device.

[0217] Optionally, the receiving module 1001 is further configured to receive a group identifier from the network device, wherein the group identifier is used to descramble the downlink control information received by the communication device 100; the sending module 1002 is specifically configured to send the downlink data to the second terminal device if the communication device 100 successfully descrambles the downlink control information of the second terminal device according to the group identifier.

[0218] All relevant content of each operation involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0219] In this embodiment, the communication device 100 is presented in an integrated manner, divided into various functional modules. Here, "module" can refer to a specific ASIC, circuitry, a processor and memory executing one or more software or firmware programs, integrated logic circuitry, and / or other devices that can provide the aforementioned functions. In a simplified embodiment, those skilled in the art will recognize that the communication device 100 can employ... Figure 2 As shown in the figure.

[0220] for example, Figure 2 The processor 201 can call computer execution instructions stored in the memory 203 to cause the communication device 100 to execute the communication method in the above method embodiment.

[0221] For example, Figure 10 The functions / implementation process of the receiving module 1001 and the transmitting module 1002 can be obtained through Figure 2 The processor 201 in the memory calls computer execution instructions stored in the memory 203 to implement the function, or... Figure 10 The functions / implementation process of the receiving module 1001 and the transmitting module 1002 can be obtained through Figure 2 It is implemented using the communication interface 204.

[0222] Since the communication device 100 provided in this embodiment can execute the above-described communication method, the technical effects it can achieve can be referred to the above-described method embodiments, and will not be repeated here.

[0223] For example, when dividing the functional modules using an integrated approach. Figure 11 A schematic diagram of a communication device 110 is shown. The communication device 110 can be a second terminal device or a chip or system-on-a-chip in the second terminal device, and the communication device 110 can be used to perform the functions of the second terminal device involved in the above embodiments.

[0224] As one possible implementation method, Figure 11 The communication device 110 shown includes: a receiving module 1101.

[0225] The receiving module 1101 is configured to receive first resource information from the network device, wherein the first resource information is used to indicate the resources of the downlink data of the communication device 110, and the resources of the downlink data of the communication device 110 are included in the overlapping bandwidth portion of the first terminal device and the communication device 110.

[0226] The receiving module 1101 is also configured to receive downlink data from the communication device 110 of the network device based on the first resource information.

[0227] The receiving module 1101 is also used to receive the downlink data from the first terminal device.

[0228] Optionally, the receiving module 1101 is further configured to receive first configuration information from the network device, wherein the first configuration information is used to indicate the resources of the downlink control information of the communication device 110; the receiving module 1101 is specifically configured to receive the first resource information from the network device on the resources of the downlink control information of the communication device 110, wherein the first resource information includes the downlink control information of the communication device 110.

[0229] All relevant content of each operation involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0230] In this embodiment, the communication device 110 is presented in an integrated manner, divided into various functional modules. Here, "module" can refer to a specific ASIC, circuitry, a processor and memory executing one or more software or firmware programs, integrated logic circuitry, and / or other devices that can provide the aforementioned functions. In a simplified embodiment, those skilled in the art will recognize that the communication device 110 can employ... Figure 2 As shown in the figure.

[0231] for example, Figure 2 The processor 201 can call the computer execution instructions stored in the memory 203 to cause the communication device 110 to execute the communication method in the above method embodiment.

[0232] For example, Figure 11 The function / implementation process of the receiving module 1101 can be achieved through... Figure 2 The processor 201 in the memory calls computer execution instructions stored in the memory 203 to implement the function, or... Figure 11 The function / implementation process of the receiving module 1101 can be achieved through... Figure 2 It is implemented using the communication interface 204.

[0233] Since the communication device 110 provided in this embodiment can execute the above-described communication method, the technical effects it can achieve can be referred to the above-described method embodiments, and will not be repeated here.

[0234] For example, when dividing the functional modules using an integrated approach. Figure 12A schematic diagram of a communication device 120 is shown. This communication device 120 can be a network device, a chip within a network device, or a system-on-a-chip. The communication device 120 can be used to perform the functions of the network device involved in the above embodiments.

[0235] As one possible implementation method, Figure 12 The communication device 120 shown includes: a transmitting module 1201.

[0236] The sending module 1201 is used to send first resource information to a first terminal device and a second terminal device, wherein the first resource information is used to indicate the downlink data resources of the second terminal device, and the downlink data resources of the second terminal device are included in the overlapping bandwidth portion of the first terminal device and the second terminal device.

[0237] The sending module 1201 is further configured to send downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information.

[0238] Optionally, the sending module 1201 is further configured to send first configuration information to the first terminal device and the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; specifically, the sending module 1201 is configured to send the first resource information to the first terminal device and the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device.

[0239] Optionally, the sending module 1201 is further configured to send second configuration information to the first terminal device, wherein the second configuration information is used to indicate the resources of the downlink control information of the first terminal device, and the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device; the sending module 1201 is further specifically configured to send the first resource information to the first terminal device and the second terminal device on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device.

[0240] Optionally, the second configuration information includes the configuration of the bandwidth portion of the first terminal device; the first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the configuration of the bandwidth portion of the second terminal device relative to the configuration of the bandwidth portion of the first terminal device.

[0241] Optionally, the first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

[0242] Optionally, the sending module 1201 is further configured to send second configuration information to the first terminal device, wherein the second configuration information is used to indicate the downlink control information resources of the first terminal device; the sending module 1201 is further configured to send first resource information to the first terminal device regarding the downlink control information resources of the first terminal device, wherein the first resource information includes the downlink control information of the first terminal device, and the downlink control information of the first terminal device is used to indicate the downlink data resources of the second terminal device.

[0243] Optionally, the sending module 1201 is further configured to send first configuration information to the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; the sending module 1201 is further configured to send the first resource information to the second terminal device on the resources of the downlink control information of the second terminal device, wherein the first resource information includes the downlink control information of the second terminal device.

[0244] Optionally, the downlink control information resources of the first terminal device do not overlap with the downlink control information resources of the second terminal device.

[0245] Optionally, the sending module 1201 is further configured to send a group identifier to the first terminal device, wherein the group identifier is used to descramble the downlink control information received by the first terminal device.

[0246] All relevant content of each operation involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0247] In this embodiment, the communication device 120 is presented in an integrated manner, divided into various functional modules. Here, "module" can refer to a specific ASIC, circuitry, a processor and memory executing one or more software or firmware programs, integrated logic circuitry, and / or other devices that can provide the aforementioned functions. In a simplified embodiment, those skilled in the art will recognize that the communication device 120 can employ... Figure 2 As shown in the figure.

[0248] for example, Figure 2 The processor 201 can call computer execution instructions stored in the memory 203 to cause the communication device 120 to execute the communication method in the above method embodiment.

[0249] For example, Figure 12 The function / implementation process of the sending module 1201 can be achieved through... Figure 2 The processor 201 in the memory calls computer execution instructions stored in the memory 203 to implement the function, or... Figure 12The function / implementation process of the sending module 1201 can be achieved through... Figure 2 It is implemented using the communication interface 204.

[0250] Since the communication device 120 provided in this embodiment can execute the above-described communication method, the technical effects it can achieve can be referred to the above-described method embodiments, and will not be repeated here.

[0251] Figure 13 A schematic diagram of the composition of a communication system is shown, such as Figure 13 As shown, the communication system 130 may include: terminal device 1301, terminal device 1302, and network device 1303. It is understood that... Figure 13 The accompanying drawings are merely illustrative and are not intended to limit the scope of the embodiments described in this application. Figure 13 The communication system 130 shown includes network elements and the number of network elements.

[0252] Among them, terminal device 1301 has the above-mentioned Figure 10 The communication device 100 shown can receive first resource information from network device 1303, receive downlink data from terminal device 1302 from network device 1303 based on the first resource information, and send the downlink data to terminal device 1302.

[0253] Terminal device 1302 has the above-mentioned Figure 11 The communication device 110 shown can receive first resource information from network device 1303, and based on the first resource information, receive downlink data from terminal device 1302 of network device 1303, and receive the downlink data from terminal device 1301.

[0254] Network device 1303 has the above-mentioned features Figure 12 The communication device 120 shown can send first resource information to terminal device 1301 and terminal device 1302, and send downlink data of terminal device 1302 to terminal device 1301 and terminal device 1302 according to the first resource information.

[0255] It is understood that all relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding network element of the communication system 130, and will not be repeated here.

[0256] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0257] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0258] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0259] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0260] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0261] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method is executed by a first terminal device or a chip in the first terminal device, the method comprising: Receive second configuration information from a network device; the second configuration information is used to indicate the resources of the downlink control information of the first terminal device, and the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device. Receive first resource information from the network device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device; Based on the first resource information, downlink data from the second terminal device is received from the network device.

2. The method according to claim 1, characterized in that, The method further includes: The system receives first configuration information from the network device, wherein the first configuration information is used to indicate resources for downlink control information of the second terminal device; wherein the first resource information includes downlink control information of the second terminal device.

3. The method according to claim 2, characterized in that, The second configuration information includes the bandwidth configuration of the first terminal device; The first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device.

4. The method according to claim 2, characterized in that, The first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: Receive a group identifier from the network device, wherein the group identifier is used to descramble downlink control information received by the first terminal device.

6. A communication method, characterized in that, The method is executed by a second terminal device or a chip in the second terminal device, and the method includes: Receive first configuration information from a network device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device, and the resources of the downlink control information of the second terminal device overlap with the resources of the downlink control information of the first terminal device; Receive first resource information from the network device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device; Based on the first resource information, downlink data from the second terminal device is received from the network device.

7. The method according to claim 6, characterized in that, The first resource information includes downlink control information of the second terminal device.

8. A communication method, characterized in that, The method is performed by a network device or a chip in a network device, the method comprising: Send first configuration information to the second terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; Send second configuration information to the first terminal device. The second configuration information is used to indicate the resources of the downlink control information of the first terminal device. The resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device. Send first resource information to the first terminal device and the second terminal device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device; Based on the first resource information, downlink data of the second terminal device is sent to the first terminal device and the second terminal device.

9. The method according to claim 8, characterized in that, The method further includes: Send first configuration information to the first terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; wherein the first resource information includes the downlink control information of the second terminal device.

10. The method according to claim 9, characterized in that, The second configuration information includes the bandwidth configuration of the first terminal device; The first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device.

11. The method according to claim 9, characterized in that, The first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

12. The method according to any one of claims 8-11, characterized in that, The method further includes: A group identifier is sent to the first terminal device, wherein the group identifier is used to descramble downlink control information.

13. A communication device, characterized in that, The device is a first terminal device or a chip in a first terminal device, the device comprising: The receiving unit is configured to receive second configuration information from a network device; the second configuration information is used to indicate the resources of the downlink control information of the first terminal device, wherein the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device; wherein... The receiving unit is further configured to: receive first resource information from the network device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device; The receiving unit is further configured to receive downlink data from the network device based on the first resource information.

14. The apparatus according to claim 13, characterized in that, The receiving unit is further configured to: The system receives first configuration information from the network device, wherein the first configuration information is used to indicate resources for downlink control information of the second terminal device; wherein the first resource information includes downlink control information of the second terminal device.

15. The apparatus according to claim 14, characterized in that, The second configuration information includes the bandwidth configuration of the first terminal device; The first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device.

16. The apparatus according to claim 14, characterized in that, The first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

17. The apparatus according to any one of claims 13-16, characterized in that, The receiving unit is further configured to: Receive a group identifier from the network device, wherein the group identifier is used to descramble downlink control information received by the first terminal device.

18. A communication device, characterized in that, The device is a second terminal device or a chip in a second terminal device, and the device includes: The receiving unit is configured to receive first configuration information from a network device, wherein the first configuration information is used to indicate the resources of downlink control information of the second terminal device, and the resources of the downlink control information of the second terminal device overlap with the resources of the downlink control information of the first terminal device; wherein... The receiving unit is further configured to receive first resource information from the network device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device. The receiving unit is further configured to receive downlink data from the network device based on the first resource information.

19. The apparatus according to claim 18, characterized in that, The first resource information includes downlink control information of the second terminal device.

20. A communication device, characterized in that, The device is a network device or a chip in a network device, and the device includes: The sending unit is configured to send first configuration information to a second terminal device, wherein the first configuration information is used to indicate the resources of downlink control information of the second terminal device; wherein... The sending unit is further configured to send second configuration information to the first terminal device, the second configuration information being used to indicate the resources of the downlink control information of the first terminal device, wherein the resources of the downlink control information of the first terminal device overlap with the resources of the downlink control information of the second terminal device. The sending unit is further configured to send first resource information to the first terminal device and the second terminal device, wherein the first resource information is used to indicate the resources of the downlink data of the second terminal device, the resources of the downlink data of the second terminal device are included in the overlapping portion of the first bandwidth portion configured by the network device for the first terminal device and the second bandwidth portion configured by the network device for the second terminal device, and the first resource information is carried on the resources of the downlink control information of the second terminal device that overlap with the downlink control information of the first terminal device; The sending unit is further configured to send downlink data of the second terminal device to the first terminal device and the second terminal device according to the first resource information.

21. The apparatus according to claim 20, characterized in that, The transmitting unit is further configured to: Send first configuration information to the first terminal device, wherein the first configuration information is used to indicate the resources of the downlink control information of the second terminal device; wherein the first resource information includes the downlink control information of the second terminal device.

22. The apparatus according to claim 21, characterized in that, The second configuration information includes the bandwidth configuration of the first terminal device; The first configuration information includes a first offset and the configuration of the control resource set of the second terminal device, wherein the first offset is used to indicate the offset of the bandwidth configuration of the second terminal device relative to the bandwidth configuration of the first terminal device.

23. The apparatus according to claim 21, characterized in that, The first configuration information includes the configuration of the bandwidth portion of the second terminal device and the configuration of the control resource set of the second terminal device.

24. The apparatus according to any one of claims 20-23, characterized in that, The transmitting unit is further configured to: A group identifier is sent to the first terminal device, wherein the group identifier is used to descramble downlink control information.

25. A communication device, characterized in that, include: A processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method as claimed in any one of claims 1 to 5, or the method as claimed in any one of claims 6 to 7, or the method as claimed in any one of claims 8 to 12.

26. A computer-readable medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, they cause the computer to perform the method as described in any one of claims 1 to 5, or the method as described in any one of claims 6 to 7, or the method as described in any one of claims 8 to 12.

27. A computer program product, the computer program product comprising computer program code, characterized in that, When the computer program code is run on a computer, it causes the computer to implement the method of any one of claims 1 to 5, or the method of any one of claims 6 to 7, or the method of any one of claims 8 to 12.

28. A chip, characterized in that, include: A processor coupled to a memory for storing programs or instructions that, when executed by the processor, cause the chip to perform the method as described in any one of claims 1 to 5, or the method as described in any one of claims 6 to 7, or the method as described in any one of claims 8 to 12.

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