CN110167127B

CN110167127B - Communication method and device

Info

Publication number: CN110167127B
Application number: CN201810150738.4A
Authority: CN
Inventors: 曾勇波; 才宇; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2021-02-12
Anticipated expiration: 2038-02-13
Also published as: WO2019157997A1; CN110167127A

Abstract

The embodiment of the application provides a communication method and a device, wherein the method comprises the following steps: a first terminal determines a power parameter value of the first terminal, wherein the power parameter value of the first terminal comprises expected received power of the first terminal; the first terminal sends first information to a second terminal, wherein the first information is at least used for indicating a power parameter value of the first terminal. After the second terminal receives the first information, the transmission power of the second terminal for communicating with the first terminal can be determined according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

Device to Device (D2D) technology is a technology for direct communication between devices, and messages and corresponding control information may be sent directly between two devices without going through a base station. V2X (Vehicle to evolution, V2X) is a Vehicle to Vehicle (V2V) communication service that enhances the channel structure and signal based on D2D to support high moving speed. A typical application scenario of the future evolution of D2D (futher enhancement on D2D, FeD2D) is a terminal-to-Network Relay (UE-to-Network Relay) scenario, that is, a scenario in which data and control information between a Relay base station (eNB) and a Remote terminal (Remote UE) are relayed by a Relay terminal or a Relay node (Relay UE), and the main purpose is to apply the D2D technology to a low-cost device. In the current FeD2D, there are two possible relay modes: a Bidirectional Relay mode (Bidirectional Relay mode) and a Unidirectional Relay mode (Unidirectional Relay mode), as shown in fig. 1, in the Bidirectional Relay mode, Relay UE may forward uplink and downlink signaling and data between eNB and Remote UE, that is, downlink signaling and data from eNB to Remote UE may be forwarded to Remote UE through bypass (sidelink) by the Relay UE, and uplink signaling and data from the Remote UE to eNB may also be forwarded to eNB through uplink by the Relay UE. In the unidirectional Relay mode, the Remote UE directly receives downlink signaling and data from the eNB, and the Relay UE only forwards uplink signaling and data from the Remote UE to the eNB.

One of the main objectives of UE-NW relaying is to reduce the power consumption of Remote UEs, where the main approach is to control the transmit power of Remote UEs to determine that the uplink of cellular communication is not interfered by the sidelink communication between UEs. Generally, the signal transmission power of communication between the UE and the UE is determined according to an open-loop power control procedure, and a current parameter of open-loop power control is set according to the capability of the eNB, and then, because the receiving capability of the UE is different from that of the base station, the receiving performance of the UE and the base station is different under the same receiving power, and therefore, the transmission power determined by the Remote UE according to the existing method is likely to cause reception failure in the relay UE.

Disclosure of Invention

The embodiment of the application provides a communication method and device, which are used for improving the success rate of communication between relay UE and Remote UE and improving the receiving performance of the relay UE.

In a first aspect, an embodiment of the present application provides a communication method, including: a first terminal firstly determines a power parameter value of the first terminal; and sending first information to a second terminal, wherein the first information is at least used for indicating a power parameter value of the first terminal, and the power parameter value of the first terminal comprises the expected received power of the first terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the first aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the first aspect, before the first terminal sends the first information to the second terminal, a power offset value is further determined according to a power parameter value of the first terminal and a power parameter value of the network device received from the network device. Wherein the first information comprises: second information; the second information is at least for indicating the power offset value between a power parameter value of the first terminal and a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the first aspect, in a third embodiment of the first aspect, the second information comprises the power offset value; or, the second information includes a power offset factor, and the first terminal further determines the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the first aspect, in the fourth embodiment of the first aspect, the determining, by the first terminal, the power offset factor according to the power offset value includes: and the first terminal determines the power offset factor according to the power offset value and a preset power step length.

According to any one of the second to fourth embodiments of the first aspect, in a fifth embodiment of the first aspect, the first information further comprises: a power parameter value of the network device.

In a second aspect, an embodiment of the present application provides a communication method, including:

the first terminal determines the power parameter value P of the first terminal₀(ii) a And then the first information is sent to the second terminal. The first information is at least used for indicating a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. So that the second terminal is according toThe power parameter value P of the first terminal indicated by the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, so that the success rate of the communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the second aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the second aspect, before the first terminal sends the first information to the second terminal, the first information is further sent according to a power parameter value P of the first terminal₀And determining a power offset value from a power parameter value of the network device received by the network device. Wherein the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the second aspect, in a third embodiment of the second aspect, the second information comprises the power offset value. Or, the second information includes a power offset factor, and the method further includes: and the first terminal determines the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the second aspect, in a fourth embodiment of the second aspect, the determining, by the first terminal, the power offset factor according to the power offset value comprises: and the first terminal determines the power offset factor according to the power offset value and a preset power step length.

In a fifth embodiment of the second aspect, according to any one of the second to fourth embodiments of the second aspect, the first information further comprises: a power parameter value of the network device.

In a third aspect, an embodiment of the present application provides a communication method, including:

the second terminal receives first information at least used for indicating the power parameter value of the first terminal; and then determining the transmission power of the second terminal for communicating with the first terminal according to the first information, wherein the power parameter value of the first terminal comprises the expected receiving power of the first terminal. Because the transmitting power is determined based on the power parameter value of the first terminal, the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the third aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the third aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. The second terminal determines the transmission power of the second terminal communicating with the first terminal according to the first information, and the determining includes: the second terminal determines a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from the network equipment or the first terminal; and determining the transmission power of the communication between the second terminal and the first terminal according to the power parameter value of the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the third aspect, in a third embodiment of the third aspect, the second information comprises the power offset value.

According to a second embodiment of the third aspect, in a fourth embodiment of the third aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The second terminal determines a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network device received from a network device or the first terminal, including: the second terminal determines the power offset value according to the power offset factor; and determining a power parameter value of the first terminal according to the power deviation value and the power parameter value of the network equipment. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second embodiment of the third aspect, in a fifth embodiment of the third aspect, the determining, by the second terminal, the power offset value according to the power offset factor includes: and the second terminal determines the power deviation value according to the power deviation factor and a preset power step length.

According to any one of the second to fifth embodiments of the third aspect, in a sixth embodiment of the third aspect, the first information further comprises: a power parameter value of the network device.

According to the third aspect or any one of the first to sixth embodiments of the third aspect, in a seventh embodiment of the third aspect, the receiving, by the second terminal, the first information includes: the second terminal receiving the first information from the first terminal; or, the second terminal receives the first information from a network device, where the first information is reported to the network device by the first terminal.

In a fourth aspect, an embodiment of the present application provides a communication method, including:

the second terminal receives first information at least for indicating the power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including a desired received power of the first terminal; and then determining the transmission power of the communication between the second terminal and the first terminal according to the first information. Since the transmission power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the fourth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the fourth aspect, the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power offset value from a power parameter value of the network device. The second terminal determines the transmission power of the second terminal communicating with the first terminal according to the first information, and the determining includes: the second terminal determines the power parameter value P of the first terminal according to the second information in the first information and the power parameter value of the network equipment received from the network equipment or the first terminal₀(ii) a Then according to the power parameter value P of the first terminal₀And determining the transmission power of the second terminal for communicating with the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the fourth aspect, in a third embodiment of the fourth aspect, the second information comprises the power offset value.

According to a second embodiment of the fourth aspect,in a fourth embodiment of the fourth aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The second terminal determines the power parameter value P of the first terminal according to the second information in the first information and the power parameter value of the network equipment received from the network equipment or the first terminal₀The method comprises the following steps: the second terminal determines the power offset value according to the power offset factor; then, according to the power deviation value and the power parameter value of the network equipment, the power parameter value P of the first terminal is determined₀. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second embodiment of the fourth aspect, in a fifth embodiment of the fourth aspect, the determining, by the second terminal, the power offset value according to the power offset factor comprises: and the second terminal determines the power deviation value according to the power deviation factor and a preset power step length.

In a sixth embodiment of the fourth aspect, according to any one of the second to fifth embodiments of the fourth aspect, the first information further comprises: a power parameter value of the network device.

According to the fourth aspect or any one of the first to sixth embodiments of the fourth aspect, in a seventh embodiment of the fourth aspect, the receiving, by the second terminal, the first information includes: the second terminal receiving the first information from the first terminal; or, the second terminal receives the first information from a network device, where the first information is reported to the network device by the first terminal.

In a fifth aspect, an embodiment of the present application provides a communication method, including;

the network equipment receives first information from a first terminal, wherein the first information is at least used for indicating a power parameter value of the first terminal, and the power parameter value of the first terminal comprises expected received power of the first terminal; and then the first information is sent to a second terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the fifth aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the fifth aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of the network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the fifth aspect, in a third embodiment of the fifth aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the fifth aspect, in a fourth embodiment of the fifth aspect, the first information further comprises: a power parameter value of the network device.

According to a second or third embodiment of the fifth aspect, in a fifth embodiment of the fifth aspect, the network device further sends a power parameter value of the network device to the second terminal.

In a sixth aspect, an embodiment of the present application provides a communication method, including;

the network equipment receives first information from a first terminal, wherein the first information is at least used for indicating a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including a desired received power of the first terminal; and then the first information is sent to a second terminal. Enabling the second terminal to indicate the power parameter value P of the first terminal according to the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the sixth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the sixth aspect, the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power offset value from a power parameter value of the network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the sixth aspect, in a third embodiment of the sixth aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the sixth aspect, in a fourth embodiment of the sixth aspect, the first information further comprises: a power parameter value of the network device.

According to a second or third embodiment of the sixth aspect, in a fifth embodiment of the sixth aspect, the network device further sends a power parameter value of the network device to the second terminal.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, including: the device comprises a processing module and a sending module.

The processing module is configured to determine a power parameter value of a first terminal, where the power parameter value of the first terminal includes an expected received power of the first terminal. A sending module, configured to send first information to a second terminal, where the first information is at least used to indicate a power parameter value of the first terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the seventh aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the seventh aspect, the processing module is further configured to determine, before the sending module sends the first information to the second terminal, a power offset value according to a power parameter value of the first terminal and a power parameter value of the network device received from the network device. Wherein the first information comprises: second information; the second information is at least for indicating the power offset value between a power parameter value of the first terminal and a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the seventh aspect, in a third embodiment of the seventh aspect, the second information comprises the power offset value. Or, the second information includes a power offset factor, and the processing module is further configured to: determining the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the seventh aspect, in a fourth embodiment of the seventh aspect, the processing module is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

According to any one of the second to fourth embodiments of the seventh aspect, in a fifth embodiment of the seventh aspect, the first information further comprises: a power parameter value of the network device.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, including: the device comprises a processing module and a sending module.

Wherein the processing module is used for determining the power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. A sending module, configured to send first information to a second terminal, where the first information is at least used to indicate a power parameter value P of the first terminal₀. Enabling the second terminal to indicate the power parameter value P of the first terminal according to the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the eighth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal may be capable of receiving the first informationDirectly obtaining a power parameter value P of a first terminal₀The processing load of the second terminal is reduced.

In a second embodiment of the eighth aspect, the processing module is further configured to, before the sending module sends the first information to the second terminal, send the first information according to the power parameter value P of the first terminal₀And determining a power offset value from a power parameter value of the network device received by the network device. Wherein the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the eighth aspect, in a third embodiment of the eighth aspect, the second information comprises the power offset value. Or, the second information includes a power offset factor, and the processing module is further configured to: determining the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the eighth aspect, in a fourth embodiment of the eighth aspect, the processing module is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

According to any one of the second to fourth embodiments of the eighth aspect, in a fifth embodiment of the eighth aspect, the first information further comprises: a power parameter value of the network device.

In a ninth aspect, an embodiment of the present application provides a communication apparatus, including: the device comprises a receiving module and a processing module.

The receiving module is configured to receive first information, where the first information is at least used to indicate a power parameter value of a first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal. And the processing module is used for determining the transmission power of the communication between the second terminal and the first terminal according to the first information. Because the transmitting power is determined based on the power parameter value of the first terminal, the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the ninth aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the ninth aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. The processing module is specifically configured to: determining a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from network equipment or the first terminal; and determining the transmission power of the communication between the second terminal and the first terminal according to the power parameter value of the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the ninth aspect, in a third embodiment of the ninth aspect, the second information comprises the power offset value.

According to a second embodiment of the ninth aspect, in a fourth embodiment of the ninth aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The processing module is specifically configured to: firstly, determining the power offset value according to the power offset factor; and determining a power parameter value of the first terminal according to the power deviation value and the power parameter value of the network equipment.

According to a second embodiment of the ninth aspect, in a fifth embodiment of the ninth aspect, the processing module is specifically configured to: and determining the power offset value according to the power offset factor and a preset power step length.

In a sixth embodiment of the ninth aspect according to any of the second to fifth embodiments of the ninth aspect, the first information further comprises: a power parameter value of the network device.

According to the ninth aspect or any one of the first to sixth embodiments of the ninth aspect, in a seventh embodiment of the ninth aspect, the receiving module is specifically configured to: receiving the first information from the first terminal; or, receiving the first information from a network device, where the first information is reported to the network device by the first terminal.

In a tenth aspect, an embodiment of the present application provides a communication apparatus, including: the device comprises a receiving module and a processing module.

Wherein, the receiving module is configured to receive first information, where the first information is at least used to indicate a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. And the processing module is used for determining the transmission power of the communication between the second terminal and the first terminal according to the first information. Since the transmission power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the tenth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the tenth aspect, the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power offset value from a power parameter value of the network device. The processing module is specifically configured to: determining a power parameter value P of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from the network equipment or the first terminal₀(ii) a Then according to the power parameter value P of the first terminal₀And determining the transmission power of the second terminal for communicating with the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the tenth aspect, in a third embodiment of the tenth aspect, the second information comprises the power offset value.

According to a second embodiment of the tenth aspect, in a fourth embodiment of the tenth aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The processing module is specifically configured to: firstly, determining the power offset value according to the power offset factor; then, according to the power deviation value and the power parameter value of the network equipment, the power parameter value P of the first terminal is determined₀. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second embodiment of the tenth aspect, in a fifth embodiment of the tenth aspect, the processing module is specifically configured to: and determining the power offset value according to the power offset factor and a preset power step length.

According to any one of the second to fifth embodiments of the tenth aspect, in a sixth embodiment of the tenth aspect, the first information further comprises: a power parameter value of the network device.

According to the tenth aspect or any one of the first to sixth embodiments of the fourth aspect, in a seventh embodiment of the tenth aspect, the receiving module is specifically configured to: receiving the first information from the first terminal; or, receiving the first information from a network device, where the first information is reported to the network device by the first terminal.

The communication device according to the seventh aspect, the eighth aspect, the ninth aspect, or the tenth aspect may be a terminal, or may be a chip that can be used for a terminal.

In an eleventh aspect, an embodiment of the present application provides a communication apparatus, including; the device comprises a receiving module and a sending module.

The receiving module is configured to receive first information from a first terminal, where the first information is at least used to indicate a power parameter value of the first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal. And the sending module is used for sending the first information to a second terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the eleventh aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the eleventh aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the eleventh aspect, in a third embodiment of the eleventh aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the eleventh aspect, in a fourth embodiment of the eleventh aspect, the first information further comprises: a power parameter value of the network device.

According to a second embodiment or a third embodiment of the eleventh aspect, in a fifth embodiment of the eleventh aspect, the sending module is further configured to send the power parameter value of the network device to the second terminal.

In a twelfth aspect, an embodiment of the present application provides a communications apparatus, including; the device comprises a receiving module and a sending module.

Wherein, the receiving module is configured to receive first information from a first terminal, where the first information is at least used to indicate a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. And the sending module is used for sending the first information to a second terminal. Enabling the second terminal to indicate the power parameter value P of the first terminal according to the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the twelfth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the twelfth aspect, the first information comprises: second information; the secondInformation at least indicating a power parameter value P for said first terminal₀And a power offset value from a power parameter value of the network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the twelfth aspect, in a third embodiment of the twelfth aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the twelfth aspect, in a fourth embodiment of the twelfth aspect, the first information further comprises: a power parameter value of the network device.

According to the second embodiment or the third embodiment of the twelfth aspect, in a fifth embodiment of the twelfth aspect, the sending module is further configured to send the power parameter value of the network device to the second terminal.

The communication device according to the eleventh or twelfth aspect may be a network device, or may be a chip usable for a network device.

In a thirteenth aspect, an embodiment of the present application provides a communication apparatus, including: a processor and a transmitter.

Wherein the processor is configured to determine a power parameter value of a first terminal, the power parameter value of the first terminal comprising an expected received power of the first terminal. A transmitter configured to transmit first information to a second terminal, the first information at least indicating a power parameter value of the first terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the thirteenth aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the thirteenth aspect, the processor is further configured to determine a power offset value based on a power parameter value of the first terminal and a power parameter value of a network device received from the network device before the transmitter transmits the first information to the second terminal. Wherein the first information comprises: second information; the second information is at least for indicating the power offset value between a power parameter value of the first terminal and a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the thirteenth aspect, in a third embodiment of the thirteenth aspect, the second information comprises the power offset value. Or, the second information includes a power offset factor, and the processor is further configured to: determining the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the thirteenth aspect, in the fourth embodiment of the thirteenth aspect, the processor is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

In a fifth embodiment of the thirteenth aspect, the first information further comprises, in accordance with any of the second to fourth embodiments of the thirteenth aspect: a power parameter value of the network device.

In a fourteenth aspect, an embodiment of the present application provides a communication apparatus, including: a processor and a transmitter.

Wherein the processor is used for determining the power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. A transmitter for transmitting first information to a second terminal, the first information at least indicating a power parameter value P of the first terminal₀. Enabling the second terminal to indicate the power parameter value P of the first terminal according to the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the fourteenth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the fourteenth aspect, the processor is further configured to determine the power parameter value P of the first terminal according to the power parameter value P of the first terminal before the transmitter transmits the first information to the second terminal₀And determining a power offset value from a power parameter value of the network device received by the network device. Wherein the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the fourteenth aspect, in a third embodiment of the fourteenth aspect, the second information comprises the power offset value. Or, the second information includes a power offset factor, and the processor is further configured to: determining the power offset factor according to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a third embodiment of the fourteenth aspect, in the fourth embodiment of the fourteenth aspect, the processor is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

In a fifth embodiment of the fourteenth aspect, according to any one of the second to fourth embodiments of the fourteenth aspect, the first information further comprises: a power parameter value of the network device.

In a fifteenth aspect, an embodiment of the present application provides a communication apparatus, including: a receiver and a processor.

The receiver is configured to receive first information, where the first information is at least used to indicate a power parameter value of a first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal. And the processor is used for determining the transmission power of the communication between the second terminal and the first terminal according to the first information. Because the transmitting power is determined based on the power parameter value of the first terminal, the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the fifteenth aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the fifteenth aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. The processor is specifically configured to: determining a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from network equipment or the first terminal; and determining the transmission power of the communication between the second terminal and the first terminal according to the power parameter value of the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the fifteenth aspect, in a third embodiment of the fifteenth aspect, the second information comprises the power offset value.

According to a second embodiment of the fifteenth aspect, in a fourth embodiment of the fifteenth aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The processor is specifically configured to: firstly, determining the power offset value according to the power offset factor; and determining a power parameter value of the first terminal according to the power deviation value and the power parameter value of the network equipment. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second embodiment of the fifteenth aspect, in a fifth embodiment of the fifteenth aspect, the processor is specifically configured to: and determining the power offset value according to the power offset factor and a preset power step length.

According to any one of the second to fifth embodiments of the fifteenth aspect, in a sixth embodiment of the fifteenth aspect, the first information further comprises: a power parameter value of the network device.

According to the fifteenth aspect or any one of the first to sixth embodiments of the fifteenth aspect, in a seventh embodiment of the fifteenth aspect, the receiver is specifically configured to: receiving the first information from the first terminal; or, receiving the first information from a network device, where the first information is reported to the network device by the first terminal.

In a sixteenth aspect, an embodiment of the present application provides a communication apparatus, including: a receiver and a processor.

Wherein the receiver is configured to receive first information at least indicating a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. And the processor is used for determining the transmission power of the communication between the second terminal and the first terminal according to the first information. Since the transmission power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the sixteenth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the sixteenth aspect, the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power offset value from a power parameter value of the network device. The processor is specifically configured to: determining a power parameter value P of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from the network equipment or the first terminal₀(ii) a Then according to the power parameter value P of the first terminal₀And determining the transmission power of the second terminal for communicating with the first terminal. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the sixteenth aspect, in a third embodiment of the sixteenth aspect, the second information comprises the power offset value.

According to a second embodiment of the sixteenth aspect, in a fourth embodiment of the sixteenth aspect, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The processor is specifically configured to: firstly, determining the power offset value according to the power offset factor; and determining a power parameter value of the first terminal according to the power deviation value and the power parameter value of the network equipment. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second embodiment of the sixteenth aspect, in the fifth embodiment of the sixteenth aspect, the processor is specifically configured to: and determining the power offset value according to the power offset factor and a preset power step length.

In a sixth embodiment of the sixteenth aspect, according to any one of the second to fifth embodiments of the sixteenth aspect, the first information further comprises: a power parameter value of the network device.

According to a sixteenth aspect or any one of the first to sixth embodiments of the fourth aspect, in a seventh embodiment of the sixteenth aspect, the receiver is specifically configured to: receiving the first information from the first terminal; or, receiving the first information from a network device, where the first information is reported to the network device by the first terminal.

The communication device according to the thirteenth aspect, the fourteenth aspect, the fifteenth aspect, or the sixteenth aspect may be a terminal, or may be a chip that can be used for a terminal.

In a seventeenth aspect, an embodiment of the present application provides a communication apparatus, including; a receiver and a transmitter.

The receiver is configured to receive first information from a first terminal, where the first information is at least used to indicate a power parameter value of the first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal. A transmitter for transmitting the first information to a second terminal. The second terminal determines the transmission power of the second terminal for communicating with the first terminal according to the power parameter value of the first terminal indicated by the first information, and the transmission power is determined based on the power parameter value of the first terminal, so that the receiving power of the first terminal for receiving information from the second terminal is close to the expected receiving power of the first terminal, the success rate of communication between the second terminal and the first terminal is improved, and the receiving performance of the first terminal is improved.

In a first embodiment of the seventeenth aspect, the first information comprises: a power parameter value of the first terminal. Therefore, the second terminal can directly obtain the power parameter value of the first terminal according to the first information, and the processing amount of the second terminal is reduced.

In a second embodiment of the seventeenth aspect, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the seventeenth aspect, in a third embodiment of the seventeenth aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the seventeenth aspect, in a fourth embodiment of the seventeenth aspect, the first information further comprises: a power parameter value of the network device.

According to a second embodiment or a third embodiment of the seventeenth aspect, in a fifth embodiment of the seventeenth aspect, the transmitter is further configured to transmit a power parameter value of the network device to the second terminal.

In an eighteenth aspect, an embodiment of the present application provides a communication apparatus, including; a receiver and a transmitter.

Wherein is connected toA receiver for receiving first information from a first terminal, the first information being at least indicative of a power parameter value P of the first terminal₀Value P of a power parameter of said first terminal₀Including the desired received power of the first terminal. A transmitter for transmitting the first information to a second terminal. Enabling the second terminal to indicate the power parameter value P of the first terminal according to the first information₀Determining a transmit power of the second terminal in communication with the first terminal, since the transmit power is based on the power parameter value P of the first terminal₀And determining that the receiving power of the first terminal for receiving the information from the second terminal is close to the expected receiving power of the first terminal, thereby improving the success rate of the communication between the second terminal and the first terminal and improving the receiving performance of the first terminal.

In a first embodiment of the eighteenth aspect, the first information comprises: power parameter value P of the first terminal₀. Therefore, the second terminal can directly obtain the power parameter value P of the first terminal according to the first information₀The processing load of the second terminal is reduced.

In a second embodiment of the eighteenth aspect, the first information comprises: second information; the second information is at least used for indicating a power parameter value P of the first terminal₀And a power offset value from a power parameter value of the network device. Since the power offset value indicated by the second information is a relative value, the size of the second information included in the first information is small, and transmission overhead is saved.

According to a second embodiment of the eighteenth aspect, in a third embodiment of the eighteenth aspect, the second information comprises the power offset value. Alternatively, the second information comprises a power offset factor, the power offset factor being related to the power offset value. Since the second information includes the power offset factor, the size of the second information is reduced, further saving transmission overhead.

According to a second or third embodiment of the eighteenth aspect, in a fourth embodiment of the eighteenth aspect, the first information further comprises: a power parameter value of the network device.

According to a second embodiment or a third embodiment of the eighteenth aspect, in a fifth embodiment of the eighteenth aspect, the transmitter is further configured to transmit a power parameter value of the network device to the second terminal.

The communication device according to the seventeenth aspect or the eighteenth aspect may be a network device or a chip usable for a network device.

In a nineteenth aspect, an embodiment of the present application provides a communication apparatus, including: a memory and a processor.

Wherein the memory is used for storing program codes. A processor, which invokes the program code and when the program code is executed, is configured to perform the communication method according to the embodiment of the first aspect or the second aspect.

In a twentieth aspect, an embodiment of the present application provides a communication apparatus, including: a memory and a processor.

Wherein the memory is used for storing program codes. A processor, which invokes the program code and when the program code is executed, is configured to perform the communication method according to the embodiment of the third aspect or the fourth aspect.

The communications apparatus according to the nineteenth or twentieth aspect may be a terminal, or may be a chip usable for a terminal.

In a twenty-first aspect, an embodiment of the present application provides a communication apparatus, including: a memory and a processor.

Wherein the memory is used for storing program codes. A processor, which invokes the program code and when the program code is executed, is configured to perform the communication method according to the embodiment of the fifth aspect or the sixth aspect.

The communication device according to the twenty-first aspect may be a network device, or may be a chip usable for a network device.

In a twenty-second aspect, embodiments of the present application provide a computer-readable storage medium, including instructions that, when executed on a communication apparatus, cause the communication apparatus to perform a communication method according to the first aspect or the second aspect.

In a twenty-third aspect, embodiments of the present application provide a computer-readable storage medium, including instructions that, when executed on a communication apparatus, cause the communication apparatus to perform a communication method according to the third aspect or the fourth aspect.

In a twenty-fourth aspect, the present application provides a computer-readable storage medium including instructions that, when executed on a communication apparatus, cause the communication apparatus to perform the communication method according to the fifth aspect or the sixth aspect.

In a twenty-fifth aspect, an embodiment of the present application provides a chip, where a computer program is stored on the chip, and when the computer program is executed by a processor, the communication method according to the embodiment of the present application in the first aspect or the second aspect is performed.

In a twenty-sixth aspect, an embodiment of the present application provides a chip, where a computer program is stored on the chip, and when the computer program is executed by a processor, the communication method according to the embodiment of the present application in the third aspect or the fourth aspect is performed.

In a twenty-seventh aspect, the present application provides a chip, on which a computer program is stored, and when the computer program is executed by a processor, the communication method according to the fifth aspect or the sixth aspect is performed.

Drawings

FIG. 1 is a schematic diagram of a relay mode;

fig. 2 is a schematic diagram of a communication system provided in an embodiment of the present application;

fig. 3 is a flowchart of a communication method according to an embodiment of the present application;

fig. 4 is a schematic diagram illustrating a relay terminal sending first information to a remote terminal according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a relay terminal sending first information to a remote terminal according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to another embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to another embodiment of the present application.

Detailed Description

Fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application, and as shown in fig. 2, the communication system includes a network device and at least two terminals, and the network device and the two terminals perform communication according to the following technical solutions according to the embodiments of the present application. Fig. 2 shows two terminals, namely a first terminal and a second terminal, where the first terminal and the second terminal may be terminals of the same type or terminals of different types, and fig. 2 exemplifies that the first terminal is a smart phone and the second terminal is a smart band. The first terminal may be a relay node for the second terminal to communicate with the network device; the first terminal is located within the coverage of the network device, and the second terminal may be located within the coverage of the network device or outside the coverage of the network device.

In the following, some terms in the present application are explained to facilitate understanding by those skilled in the art:

a network device: also called Radio Access Network (RAN) device, which is a device for accessing a terminal to a wireless Network, may be an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or an Access Point, or a base station in a 5G Network, such as a Transmission and Reception Point (TRP) and a controller, but is not limited herein.

A terminal: the wireless terminal can be a wireless terminal or a wired terminal, and the wireless terminal can be a device with a wireless transceiving function, can be deployed on land, and comprises indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like, which are not limited herein.

It should be noted that, in the following method embodiments, the first terminal is taken as a relay terminal, and the second terminal is taken as a remote terminal, and the following method embodiments may be applied to sidelink unicast communication, but the method embodiments are not limited thereto.

Fig. 3 is a flowchart of a communication method according to an embodiment of the present application, and as shown in fig. 3, the method according to the embodiment may include:

s301, the relay terminal determines a power parameter value of the relay terminal.

In this embodiment, the relay terminal determines a power parameter value of the relay terminal, where the power parameter value is a power parameter value P₀. In some embodiments, the power parameter value may refer to an expected received power of the relay terminal. Chapter 14 of 3GPP standard protocol TS36.213<UE procedures related to sidelink>Power control methods of psch (Physical bypass shared channel), PSCCH (Physical bypass control channel), PSDCH (Physical bypass discovery channel), PSSS (Primary synchronization signal), and SSSS (Secondary synchronization signal) are described, and P are defined, respectively_{0_PSSCH}、P_{0_PSCCH}、P_{0_PSDCH}And P_{0_PSSS}(SSSS uses the same parameter P as PSSS_{0_PSSS}). Power parameter value P of the present application₀The physical meaning is the same as that of the above parameter values, and the difference is determined in the current standardMeaning P₀The value is defined from the base station side, and the power parameter value P of the relay terminal in this application₀Is defined from the perspective of the terminal side. It should be noted that the solutions of the embodiments of the present application may also be applied to a 5G NR scenario.

The relay terminal may determine a power parameter value of the relay terminal according to characteristics of the relay terminal, such as antenna gain, receiver sensitivity, and noise floor. Or, the power parameter value of the relay terminal is determined by the network device, and then the network device indicates the power parameter value of the relay terminal to the relay terminal, so in this case, the relay terminal determines the power parameter value of the relay terminal according to the indication of the network device.

In some embodiments, the power parameter value P₀Power parameter value P that can be used to represent relay terminals on different channels or signals in different scenarios₀Similar to the representation of TS36.213, with different suffixes, for example: power control and transmit power calculation for PSDCH, power parameter value P₀Is particularly shown as P_{0_PSDCH}(ii) a Power control and transmit power calculation for PSCCH, power parameter value P₀Is particularly shown as P_{0_PSCCH}(ii) a Power control and transmit power calculation for PSSCH, power parameter value P₀Is particularly shown as P_{0_PSSCH}(ii) a Power control and transmit power calculation for PSSS, power parameter value P₀Is particularly shown as P_{0_PSSS}(ii) a Power control and transmit power calculation for SSSS, power parameter value P₀Is particularly shown as P_{0_SSSS}(P_{0_SSSS}May be equal to P_{0_PSSS}) (ii) a Power control and transmit power calculation for PSBCH, power parameter value P₀Is particularly shown as P_{0_PSBCH}. The power parameter values of the respective channels are applicable to the method in the present embodiment.

In some embodiments, the power parameter value P of the network device may be referred to₀To restrict the maximum value of the transmission power between the relay terminal and the remote terminal, at this time, the power parameter value P of the network equipment₀The physical meaning is completely identical to P in TS36.213₀The parameters are physically the same and are distinguished by different suffixes for specific different channels or signals. In some embodiments of the present application, the power parameter value P of the network device is avoided₀And power parameter value P of relay terminal₀Confusion by P_{0_relay}To represent the relay terminal power parameter value P₀By P_{0_eNB}To represent the power parameter value P of the network device₀(ii) a For power control and transmit power calculation of a particular channel or signal, the values of the power parameters P for different channels or signals are still suffixed₀For example, for PSCCH power control and transmit power calculation, P may be used_{0_relay_PSCCH}Representing a value of a power parameter P of a relay terminal on a PSCCH₀By P_{0_eNB_PSCCH}Representing a power parameter value P of a network device on a PSCCH₀And so on to other channels or signals of sidelink.

S302, the relay terminal sends first information to a remote terminal.

In this embodiment, after determining the power parameter value of the relay terminal, the relay terminal sends the first information to the remote terminal. The first information is at least used for indicating a power parameter value of the relay terminal, and the power parameter value of the relay terminal comprises expected received power of the relay terminal.

S303, the remote terminal receives the first information.

In some embodiments, the remote terminal receives the first information from the network device. The relay terminal sends the first information to the remote terminal means that the relay terminal sends the first information to the network device, the network device receives the first information from the relay terminal, and the network device forwards the first information to the remote terminal, that is, the relay terminal sends the first information to the remote terminal through the forwarding of the network device, so that for the remote terminal, the remote terminal receives the first information from the network device. As shown in fig. 4, fig. 4 is a schematic diagram of a relay terminal sending first information to a remote terminal according to an embodiment of the present application.

In some embodiments, the remote terminal receives the first information from the relay terminal. The relay terminal sending the first information to the remote terminal means that the relay terminal does not need to send the first information to the remote terminal through forwarding of the network device, but the relay terminal directly sends the first information to the remote terminal, and therefore, for the remote terminal, the remote terminal receives the first information from the relay terminal. As shown in fig. 5, fig. 5 is a schematic diagram of a relay terminal sending first information to a remote terminal according to another embodiment of the present application.

S304, the remote terminal determines the transmission power of the communication between the remote terminal and the relay terminal according to the first information.

In this embodiment, after the remote terminal receives the first information, since the first information at least indicates the power parameter value of the relay terminal, the remote terminal may determine, according to the power parameter value of the relay terminal indicated by the first information, the transmission power of the communication between the remote terminal and the relay terminal by using an open-loop power control method and/or a closed-loop power control method. The transmission power refers to transmission power of signaling and data sent by the remote terminal to the relay terminal, and then the remote terminal can send the signaling and/or the data to the relay terminal according to the transmission power, and since the transmission power is determined by referring to a power parameter value (for example, expected received power) of the relay terminal, the received power of the relay terminal for receiving the signaling and/or the data from the remote terminal is close to the expected received power, so that the success rate of the relay terminal for receiving the signaling and/or the data sent by the remote terminal is improved, and the receiving performance of the relay terminal is improved. For example, the transmit power of the Remote terminal (Remote UE) on the PSSCH may be calculated by the following open loop power control equation:

P_PSSCH＝min{P_CMAX,PSSCH,10log₁₀(M_PSSCH)+P_{0_PSSCH}+α_PSSCH*PL}[dBm]

wherein, P_CMAX,PSSCHRepresenting a preset maximum transmitting power value on the PSSCH; m_PSSCHThe bandwidth is calculated by RB (Resource Block) on PSSCH occupied by the data packet transmitted by the remote terminal; p_{0_PSSCH}Power parameter P representing relay terminal on PSSCH₀；α_PSSCHRepresents a value of [0,1 ]]Attenuation factor in the range of higher layersDetermining the value of the test sample; PL indicates a path loss between the relay terminal and the remote terminal. The calculation of the transmission power under the open-loop power control mode of other sidelink channels or signals is similar to the formula, and is not repeated. The embodiment of the present application is not limited to a specific power control method.

In the communication method provided by this embodiment, the relay terminal determines a power parameter value of the relay terminal, and then sends the first information to the remote terminal, and after the remote terminal receives the first information, the remote terminal determines the transmission power of the communication between the remote terminal and the relay terminal according to the power parameter value of the relay terminal indicated by the first information.

In some embodiments, the first information includes a power parameter value (e.g., P) of the relay terminal_{0_Relay}) Correspondingly, after the remote terminal receives the first information, the power parameter value of the relay terminal is obtained from the first information; wherein the power parameter value is an absolute value. In different embodiments, the power parameter value may indicate the size of the power parameter value in different indication manners, for example, the size of the power parameter value may be indicated by bit information. In some embodiments, the remote terminal may receive a power parameter value (e.g., P) of the network device from the network device if the remote terminal is within the coverage area of the network device_{0_eNB}) (ii) a If the remote terminal is out of the coverage area of the network device, the remote terminal may receive the power parameter value of the network device from the relay terminal, and the power parameter value of the network device may be included in the first information.

In some embodiments, the relay terminal further depends on a power parameter value (e.g., P) of the relay terminal after performing S301_{0_Relay}) And a power parameter value of the network device, determining a power offset value (e.g., P)_{0_offset}). Wherein the power parameter value of the network device can beSo that the network device transmits to the relay terminal, i.e. the relay terminal receives from the network device. The power offset value is used to represent a relative value of a power parameter value between the relay terminal and the network device, and the power offset value may be a value obtained by subtracting a power parameter value of the network device from a power parameter value of the relay terminal, or may be a value obtained by subtracting a power parameter value of the relay terminal from a power parameter value of the network device. In this embodiment, the first information may include second information, where the second information is at least used to indicate the power offset value between the power parameter value of the relay terminal and the power parameter value of the network device, that is, the relay terminal sends the second information to the remote terminal by carrying the second information in the first information when performing S302.

Accordingly, after the remote terminal receives the first information, one possible implementation manner of executing S304 is: the remote terminal determines a power parameter value of the first terminal according to the second information in the first information and the power parameter value of the network device, for example: p_{0_relay}＝P_{0_eNB}+P_{0_offset}(ii) a And then determining the transmission power of the communication between the remote terminal and the relay terminal according to the power parameter value of the relay terminal. The power parameter value of the network device may be sent to the remote terminal by the network device, that is, received by the remote terminal from the network device, or the power parameter value of the network device may be sent to the remote terminal by the relay terminal, that is, received by the remote terminal from the relay terminal. In some embodiments, one implementation way for the remote terminal to receive the power parameter value of the network device from the relay terminal is: the power parameter value of the network device is included in the first information, i.e. the remote terminal receives the first information from the relay terminal and obtains the power parameter value of the network device from the first information.

In some embodiments, the second information comprises a power offset value. And after determining the power deviation value, the relay terminal carries the power deviation value in the first information and sends the first information to the remote terminal. Correspondingly, after receiving the first information, the remote terminal acquires the power offset value of the relay terminal from the second information of the first information; wherein the power offset value is a relative value. In different embodiments, the power offset value may be indicated in different indication manners, for example, the size of the power offset value may be indicated by bit information.

In some embodiments, the second information includes a power offset factor. And after determining the power deviation value, the relay terminal also determines a power deviation factor according to the determined power deviation value, and the relay terminal carries the power deviation factor in the first information and sends the first information to the remote terminal. Accordingly, after the remote terminal receives the first information, since the power offset factor is related to the power offset value: and the remote terminal determines a power offset value according to the power offset factor included in the second information in the first information. In this embodiment, the power offset value is indicated by the power offset factor, and the power offset factor can be represented by using less bit information in the second information, thereby reducing the size of the second information.

In some embodiments, a preset power step (e.g., P) is predefined_{_step}) The determined power offset value is a multiple of the preset power step, and may be an integer multiple, P_{0_offse}t＝n*P_{_step}Thus, the relay terminal determines a power offset factor, which may be based on the determined power offset value (P)_{0_offset}) And a preset power step (P)_{_step}) A power offset factor (e.g., n) is determined, e.g., the ratio of the power offset value to a preset power step is determined as the power offset factor. Correspondingly, after the remote terminal acquires the power offset factor from the second information, the remote terminal determines the power offset value according to the power offset factor and the preset power step length. The power parameter value of the relay terminal is determined according to the power offset factor, for example, as shown in table one.

Watch 1

b1b0	n	P_{0_relay}
			00	-1	P_{0_eNB}–P_{_step}
01	0	P_{0_eNB}
			10	1	P_{0_eNB}+P_{_step}
11	2	P_{0_eNB}+2*P_{_step}

In some embodiments, the power step size (e.g., P) is preset_{_step}) May be transmitted by the relay terminal to the remote terminal. One optional mode is to predefine a group of power step values, and the relay terminal selects one from the power step values to transmit, and the mode can use fewer bits to represent limited values; another optional mode is that a value set is not predefined, and the relay terminal dynamically selects a power step value to transmit, which requires more bits to represent the power step value.

In some embodiments, the relay terminal may further transmit a power parameter value of the network device and a power offset value to the remote terminal, wherein the power parameter value of the network device is included in the first information, the power offset value represents a difference between the power parameter value of the network device and the power parameter value of the relay terminal, and the power offset value is included in the second information. And after receiving the first information and the second information, the second terminal can calculate the power parameter value of the relay terminal and calculate the transmission power when the remote terminal is communicated with the relay terminal.

In some embodiments, the relay terminal transmits the first Information to the remote terminal via a broadcast message (e.g., a bypass main system Information Block-Sidelink (MIB-SL)), or a Radio Resource Control (RRC) message or a Media Access Control (MAC) message (transmitted on psch), or a bypass Control Information (SCI) message (transmitted on PSCCH)). Accordingly, the remote terminal receives broadcast information (MIB-SL) from the relay terminal, either RRC message or MAC message (transmitted on psch), or SCI message (transmitted on PSCCH); then obtaining at least one of the following from broadcast information (MIB-SL), RRC message, MAC message, or SCI message: the power parameter value of the relay terminal, the power offset value, the power offset factor and the power parameter value of the network equipment. In some embodiments, the remote terminal also obtains the power parameter value of the network device from broadcast information (MIB-SL), either an RRC message or a MAC message, or a SCI message.

In some embodiments, if the first Information is sent by the relay terminal to the remote terminal through forwarding by the network device, after receiving the first Information sent by the relay terminal, the network device sends the first Information to the remote terminal through a System Information Block (SIB) message or an RRC message. Accordingly, the remote terminal receives the SIB message or the RRC message from the network device, and then obtains at least one of the following from the SIB message or the RRC message: the power parameter value of the relay terminal, the power offset value, the power offset factor and the power parameter value of the network equipment.

It is understood that, in the above embodiments, the method or the steps implemented by the terminal may also be implemented by a chip available for the terminal. The methods or steps implemented by the network device may also be implemented by a chip available to the network device.

Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application, where the communication device may be a terminal or a chip that can be used for the terminal, and the terminal may be a first terminal, as shown in fig. 6, the communication device according to this embodiment may include: a processing module 601 and a sending module 602.

A processing module 601, configured to determine a power parameter value of a first terminal, where the power parameter value of the first terminal includes an expected received power of the first terminal.

A sending module 602, configured to send first information to a second terminal, where the first information is at least used to indicate a power parameter value of the first terminal.

In some embodiments, the first information comprises: a power parameter value of the first terminal.

In some embodiments, the processing module 601 is further configured to determine a power offset value according to a power parameter value of the first terminal and a power parameter value of a network device received from the network device before the transmitting module transmits the first information to the second terminal.

Wherein the first information comprises: second information; the second information is at least for indicating the power offset value between a power parameter value of the first terminal and a power parameter value of a network device.

In some embodiments, the second information comprises the power offset value. Alternatively, the second information includes a power offset factor, and the processing module 601 is further configured to: determining the power offset factor according to the power offset value.

In some embodiments, the processing module 601 is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

In some embodiments, the first information further comprises: a power parameter value of the network device.

The communication apparatus described above in this embodiment may be configured to execute the technical solutions executed by the relay terminal/the relay terminal chip in the corresponding method embodiments, and the implementation principles and technical effects are similar, where the functions of each module may refer to the corresponding descriptions in the method embodiments, and are not described herein again.

In some embodiments, in terms of hardware implementation, the processing module 601 and the sending module 602 may be embedded in a processor in a hardware form. Alternatively, in a hardware implementation, the processing module 601 may be a processor, and the sending module 602 may be a transmitter.

Accordingly, the communication device of the present embodiment may further include a memory for storing program instructions for executing the above-described scheme when called.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically, a processor, to execute all or part of the steps of the relay terminal in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Fig. 7 is a schematic structural diagram of a communication device according to another embodiment of the present application, where the communication device may be a terminal or a chip that can be used for the terminal, and the terminal may be a second terminal, as shown in fig. 7, the communication device according to this embodiment may include: a receiving module 701 and a processing module 702.

A receiving module 701, configured to receive first information, where the first information is at least used to indicate a power parameter value of a first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal.

A processing module 702, configured to determine, according to the first information, a transmission power of a second terminal for communicating with the first terminal.

In some embodiments, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device. The processing module 702 is specifically configured to: determining a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from a network equipment or the first terminal; and determining the transmission power of the second terminal and the first terminal according to the power parameter value of the first terminal.

In some embodiments, the second information comprises the power offset value.

In some embodiments, the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value. The processing module 702 is specifically configured to: determining the power offset value according to the power offset factor; and determining a power parameter value of the first terminal according to the power offset value and the power parameter value of the network equipment.

In some embodiments, the processing module 702 is specifically configured to: and determining the power offset value according to the power offset factor and a preset power step length.

In some embodiments, the receiving module 701 is specifically configured to: receiving the first information from the first terminal; or, receiving the first information from a network device, where the first information is reported to the network device by the first terminal.

The communication apparatus described above in this embodiment may be configured to execute the technical solution executed by the remote terminal/remote terminal chip in each corresponding method embodiment, and the implementation principle and the technical effect are similar, where the function of each module may refer to the corresponding description in the method embodiment, and is not described herein again.

In some embodiments, in terms of hardware implementation, the receiving module 701 and the processing module 702 may be embedded in a processor in a hardware form. Alternatively, in a hardware implementation, the receiving module 701 may be a receiver, and the processing module 702 may be a processor.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically a processor, to execute all or part of the steps of the remote terminal in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Fig. 8 is a schematic structural diagram of a communication apparatus according to another embodiment of the present application, where the communication apparatus may be a network device or a chip that can be used for the network device, as shown in fig. 8, the network device of this embodiment may include: a receiving module 801 and a sending module 802.

A receiving module 801, configured to receive first information from a first terminal, where the first information is at least used to indicate a power parameter value of the first terminal, and the power parameter value of the first terminal includes an expected received power of the first terminal.

A sending module 802, configured to send the first information to a second terminal.

In some embodiments, the first information comprises: second information; the second information is at least for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device.

In some embodiments, the second information comprises the power offset value, or the second information comprises a power offset factor, the power offset factor being related to the power offset value.

In some embodiments, the sending module 802 is further configured to send the power parameter value of the network device to the second terminal.

The communication apparatus described above in this embodiment may be configured to execute the technical solutions executed by the network device/network device chip in the corresponding method embodiments, and the implementation principles and technical effects are similar, where the functions of each module may refer to the corresponding descriptions in the method embodiments, and are not described herein again.

In some embodiments, in terms of hardware implementation, the receiving module 801 and the sending module 802 may be embedded in a processor in a hardware form. Alternatively, in a hardware implementation, the receiving module 801 may be a receiver, and the sending module 802 may be a transmitter, where the receiver and the transmitter may be integrated into a transceiver.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically a processor, to execute all or part of the steps of the network device in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. Each functional module in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A communications apparatus, comprising:

a processor configured to determine a power parameter value for a first terminal, the power parameter value for the first terminal comprising an expected received power for the first terminal;

a transmitter, configured to send first information to a second terminal through a broadcast message MIB-SL, or a radio resource control RRC message, or a medium access control MAC message, or a bypass control information SCI, where the first information is at least used to indicate a power parameter value of the first terminal or a power parameter value of a network device;

the processor is further configured to determine a power offset value according to a power parameter value of the first terminal and a power parameter value of a network device received from the network device before the transmitter transmits the first information to the second terminal;

wherein the first information comprises: second information; the second information is at least for indicating the power offset value between a power parameter value of the first terminal and a power parameter value of a network device;

the second information comprises a power offset factor, the processor is further configured to: determining the power offset factor according to the power offset value.

2. The apparatus of claim 1, wherein the processor is specifically configured to: and determining the power offset factor according to the power offset value and a preset power step length.

3. A communications apparatus, comprising:

a receiver, configured to receive first information sent by a first terminal through a broadcast message MIB-SL, or a radio resource control RRC message, or a medium access control MAC message, or a bypass control information SCI, the first information at least indicating a power parameter value of the first terminal or a power parameter value of a network device, the power parameter value of the first terminal including a desired received power of the first terminal;

a processor, configured to determine, according to the first information, a transmission power of a second terminal for communicating with the first terminal;

the first information includes: second information; the second information is at least used for indicating a power offset value between a power parameter value of the first terminal and a power parameter value of a network device;

the processor is specifically configured to:

determining a power parameter value of the first terminal according to the second information in the first information and a power parameter value of the network equipment received from a network equipment or the first terminal;

determining the transmission power of the second terminal and the first terminal according to the power parameter value of the first terminal;

the second information comprises a power offset factor; wherein the power offset factor is related to the power offset value.

4. The apparatus of claim 3, wherein the processor is specifically configured to:

determining the power offset value according to the power offset factor;

and determining a power parameter value of the first terminal according to the power offset value and the power parameter value of the network equipment.

5. The apparatus of claim 4, wherein the processor is specifically configured to:

and determining the power offset value according to the power offset factor and a preset power step length.

6. The apparatus according to any of claims 3-5, wherein the receiver is specifically configured to:

receiving the first information from the first terminal; alternatively, the first and second electrodes may be,

and receiving the first information from a network device, wherein the first information is reported to the network device by the first terminal.

7. A communication device, comprising;

a receiver configured to receive first information from a first terminal, the first information at least indicating a power parameter value of the first terminal or a power parameter value of a network device, the power parameter value of the first terminal including an expected received power of the first terminal;

a transmitter for transmitting the first information to a second terminal via a broadcast message MIB-SL, or a radio resource control RRC message, or a medium access control MAC message, or a bypass control information SCI;

the second information includes a power offset factor, the power offset factor being related to the power offset value.

8. The apparatus of claim 7, wherein the transmitter is further configured to transmit the power parameter value of the network device to the second terminal.