CN111726856B

CN111726856B - Power headroom report triggering method and equipment

Info

Publication number: CN111726856B
Application number: CN201910219088.9A
Authority: CN
Inventors: 刘南南; 张向东; 常俊仁; 余唱
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2021-11-19
Anticipated expiration: 2039-03-21
Also published as: WO2020187080A1; CN111726856A

Abstract

The embodiment of the application provides a power headroom report triggering method, which relates to the field of wireless communication, wherein a terminal device can trigger a PHR and send the PHR to a network device when a PHR triggering condition is met, and the PHR triggering condition comprises any one of the following conditions: establishing side link connection; or, side link connection release; or, activating the side link of the terminal equipment; or, activating a side link carrier of the terminal equipment; or, the terminal device starts to have side link resources for transmitting data; or, the terminal device starts the transmission of the side link; or, the first timer is overtime, the terminal device has an edge link resource for transmitting new data, and for at least one activated carrier of the terminal device, the change value of the edge link path loss is greater than or equal to the first parameter value; or the terminal equipment performs multicast communication with other terminal equipment and meets the first condition; or, the resource acquisition mode is converted; or, the variation value of the number of transmission resources is greater than or equal to the second parameter value.

Description

Power headroom report triggering method and equipment

Technical Field

The present application relates to the field of wireless communications, and in particular, to a power headroom report triggering method and device.

Background

Uplink power control in a wireless system is very important, and through the uplink power control, not only can the quality of data sent by terminal equipment in a cell to network equipment be ensured, but also the interference of the terminal equipment to other terminal equipment in the system can be reduced, and the service time of a battery of the terminal equipment can be prolonged.

Power control can be divided into open loop power control and closed loop power control. The open-loop power control means that the terminal equipment determines the size of the transmitting power by itself without any participation of network equipment; the closed-loop power control refers to that a terminal device adjusts transmission power according to Transmit Power Control (TPC) of a network device, the closed-loop power control requires participation of the network device, and the terminal device reports its Power Headroom (PH) to the network device through a Power Headroom Report (PHR), so that the network device can perform a power adjustment instruction on the terminal device according to the PHR of the terminal device.

There is a mechanism of closed loop power control in an uplink in a Long Term Evolution (LTE) system and an uplink in a new radio access (NR) system. That is, the terminal device reports its PH to the network device, and the network device determines subsequent uplink scheduling for the terminal device according to the PH reported by the terminal device. If the PH reported by the terminal equipment shows that the terminal equipment does not have power to support more uplink transmissions, the network equipment cannot allocate more uplink resources to the terminal equipment during subsequent scheduling; if the PH reported by the terminal device indicates that the terminal device still has power to support more uplink transmissions, the network device may allocate more uplink resources to the terminal device to increase the uplink transmission rate.

The side link in the LTE system only supports broadcasting, so the side link in the LTE system does not have a mechanism for closed-loop power control, that is, there is no power headroom report of the side link. However, the side link in the NR system may support unicast, multicast, and broadcast, so the side link in the NR system needs a mechanism of closed-loop power control, that is, needs to report the power headroom information related to the side link, but there is no method for reporting the power headroom information related to the side link at present.

Disclosure of Invention

The embodiment of the application provides a PHR triggering method and device, and a terminal device can trigger a PHR when a PHR triggering condition is met and send the PHR to a network device.

For the side link, after the terminal device sends a PHR to the network device once, the terminal device may allocate the side link resources for multiple times before the terminal device obtains the next uplink resource, and the PHR reported last time only provides guidance for the next side link resource allocation, but cannot provide guidance for the multiple side link resource allocation. Therefore, if the terminal device triggers the PHR according to the PHR trigger condition, the terminal device needs to request the uplink resource and transmit the PHR on the requested uplink resource if there is no uplink resource available for transmitting the PHR.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a PHR trigger method, where the method includes: the terminal equipment determines PHR triggering; the terminal equipment sends the PHR to network equipment; the PHR triggers when any one of the following conditions is met: establishing side link connection; or, side link connection release; or, the side link of the terminal equipment is activated; or, activating a side link carrier of the terminal device; or, the terminal device starts to have side link resources for transmitting data; or, the terminal device starts edge link transmission; or, if the first timer is overtime, the terminal device has side link resources for transmitting data, and for at least one activated carrier of the terminal device, the side link path loss variation value is greater than or equal to the first parameter value; or the terminal equipment performs multicast communication with other terminal equipment and meets a first condition; or, the resource acquisition mode is converted; or the change value of the transmission resource quantity is larger than or equal to the second parameter value; or the terminal equipment has an edge link carrier with a power back-off change value larger than or equal to a third parameter value; the side link is a direct connection wireless communication link between the terminal device and other terminal devices. Based on the scheme, the terminal equipment can trigger the PHR when the PHR triggering condition is met, and sends the PHR to the network equipment. The network device can perform power adjustment indication according to the PHR reported by the terminal device, and perform power control reasonably.

In one possible implementation, the side link connection establishment includes: the side link connection establishment starts or the side link connection establishment ends. Based on the scheme, the terminal device can trigger the PHR when the side link connection is established or the side link connection is established and then send the PHR to the network device.

In one possible implementation, the resource obtaining method is converted, and includes: converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; or, the resource acquisition mode supporting the first mode is converted into the resource acquisition mode supporting the first mode and the second mode; or, the resource acquiring mode supporting the first mode and the second mode is converted into the resource acquiring mode supporting the second mode. Based on the scheme, the terminal device can trigger the PHR when the resource acquisition mode is converted, and send the PHR to the network device.

In a possible implementation manner, the resource obtaining manner in the first mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition mode in the first mode includes: the terminal device selects an edge link transmission resource. Based on this scheme, the resource obtaining manner in the first mode by the terminal device includes: the network device configures the side link transmission resource for the terminal device, and the resource obtaining mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition mode in the first mode comprises the following steps: when the terminal equipment selects the side link transmission resource and the resource acquisition mode is converted, the terminal equipment triggers the PHR and sends the PHR to the network equipment.

In one possible implementation, the first condition includes: for M edge links of the terminal equipment for multicast communication, the terminal equipment obtains edge link path loss change values of each edge link, and the edge link path loss change values of the M edge links in total; the number of the fourth parameter values which are greater than or equal to the number of the M side link path loss change values is greater than or equal to N; or the ratio of the number of the fifth parameter values which are greater than or equal to the M side link path loss change values to the M is greater than or equal to R; or, the average value of the M side link path loss variation values is greater than or equal to the sixth parameter value; or, the maximum value of the M side link path loss change values is greater than or equal to the seventh parameter value; or, a variation value of a maximum value in the path losses of the M side links is greater than or equal to an eighth parameter value, where the variation value of the maximum value is used to indicate a variation between two obtained maximum values; wherein M is a positive integer, N is a non-negative number, and R is greater than or equal to 0 and less than or equal to 1. Based on the scheme, the terminal device performs multicast communication with other terminal devices, and when the first condition is met, the terminal device triggers the PHR and sends the PHR to the network device.

In one possible implementation manner, the obtaining, by the terminal device, an edge link path loss variation value of each edge link includes: for each side link, determining the maximum value in the measured side link path loss change values of the carrier, and determining the maximum value as the side link path loss change value of the side link; or, for each side link, determining the minimum value of the measured side link path loss change values of the carrier, and determining the minimum value as the side link path loss change value of the side link; or, for each side link, determining an average value of the side link path loss variation values of the carrier measured by the side link, and determining the average value as the side link path loss variation value of the side link. Based on the scheme, the terminal device performs multicast communication with other terminal devices, meets a first condition, and triggers the PHR and sends the PHR to the network device when the side link path loss change value of the side link is the maximum value in the side link path loss change values of the carrier, the minimum value in the side link path loss change values of the carrier or the average value of the side link path loss change values of the carrier.

In one possible implementation, the side link path loss variation value of the carrier includes: a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR transmission; or, a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; or a variation value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR trigger. Based on the scheme, the terminal equipment performs multicast communication with other terminal equipment to meet a first condition, and the change value of the side link path loss of the carrier comprises the change value between the path loss measured at the current side link path loss reference position and the path loss measured on the side link path loss reference position during the last PHR transmission; or, a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; or, when the change value between the path loss measured at the current side link path loss reference and the path loss measured on the side link path loss reference at the last PHR trigger, the terminal device triggers the PHR and sends the PHR to the network device.

In one possible implementation, the power backoff change value includes: a change value between the power backoff currently required and the power backoff required when the terminal device transmits the PHR last time; or, the change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or the packed PHR last time; or, a change value between the currently required power backoff and the power backoff required the last time the terminal device triggers the PHR. Based on the scheme, the terminal equipment has the side link carrier with the power backoff change value greater than or equal to the third parameter value, and the power backoff change value comprises the change value between the currently required power backoff and the power backoff required when the terminal equipment sends the PHR last time; or, the change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or packages the PHR last time; or, when the power backoff required currently is different from the power backoff required last time when the terminal device triggers the PHR, triggering the PHR and sending the PHR to the network device.

In one possible implementation, the power backoff change value being greater than or equal to the third parameter value includes: the duration of the power back-off variation value being greater than or equal to the third parameter value is greater than or equal to a first preset time. Based on the scheme, when the terminal equipment has the side link carrier with the power backoff change value greater than or equal to the third parameter value and the duration greater than or equal to the first preset time, the PHR is triggered, and the PHR is sent to the network equipment.

In a possible implementation manner, the terminal device triggers a request, where the request is used for requesting uplink resources for the PHR. Based on the scheme, after the terminal device triggers the PHR, the terminal device can trigger a request to request uplink resources for the PHR and then send the PHR to the network device.

In a possible implementation manner, before the terminal device triggers the request, the method further includes: the terminal device determines that there is no uplink resource for the PHR. Based on the scheme, after the terminal device triggers the PHR, the terminal device may determine that there is no uplink resource for the PHR, trigger the request again to request the uplink resource for the PHR, and send the PHR to the network device on the requested uplink resource.

In a possible implementation, the request is a buffer status report BSR, or the request is a scheduling request SR. Based on the scheme, after the terminal device triggers the PHR, the terminal device may request uplink resources for the PHR by triggering the BSR or the SR, and then send the PHR to the network device.

In one possible implementation, when the request is a BSR, the method further includes: the terminal device triggers the SR when it fails to request uplink resources for the PHR via the BSR, and the SR is used to request uplink resources for the PHR. Based on the scheme, after the terminal device triggers the PHR, the terminal device can request uplink resources for the PHR through triggering the BSR, and then the terminal device can send the PHR to the network device after triggering the SR to request the uplink resources for the PHR.

In one possible implementation, the BSR includes any one of: padding BSR, regular BSR, periodic BSR. Based on the scheme, if the request includes a BSR, after the terminal device triggers the PHR, the terminal device may request uplink resources for the PHR by triggering a padding BSR, a regular BSR, or a periodic BSR, and then send the PHR to the network device.

In one possible implementation, the method further includes: the terminal equipment receives SR configuration information from the network equipment, wherein the SR configuration information is used for configuring an SR, and the SR is used for requesting uplink resources for the PHR; or, the terminal device stores the SR configuration information. Based on the scheme, the terminal equipment can request the network equipment for the uplink resource suitable for transmitting the PHR by triggering the SR configured according to the SR configuration information, and then transmits the PHR to the network equipment on the requested uplink resource.

In one possible implementation, the PHR includes power headroom information of an edge link of the terminal device. Based on the scheme, after the terminal device triggers the PHR, the power headroom information of the side link can be sent to the network device.

In a possible implementation manner, before the terminal device sends the PHR to the network device, the terminal device determines first information, where the first information is used to indicate power headroom information of a side link reported by the terminal device. Based on the scheme, if the first information indicates that the terminal device reports the power headroom information of the side link, the terminal device can send the PHR to the network device after triggering the PHR.

In a possible implementation manner, the terminal device determines the first information according to the indication information sent by the network device; or, the terminal device determines the first information according to the pre-stored indication information. Based on the scheme, the terminal device may determine the first information according to the indication information sent by the network device, or determine the first information according to pre-stored indication information, and if the first information indicates that the terminal device reports the margin of power information of the side link, the terminal device may send a PHR to the network device after triggering the PHR. In one possible implementation, the first timer is a prohibit timer PHR-prohibit timer reported by the uplink PHR; or, the first timer is a prohibit timer independent of the reporting of the uplink PHR, for example, a prohibit timer PHR-ProhibitTimer reported by the sidelink PHR, where the uplink is a wireless communication link from the terminal device to the network device. Based on the scheme, the terminal device may have an edge link resource for transmitting data when the first timer is overtime, and for at least one activated carrier of the terminal device, the edge link path loss variation value is greater than or equal to a first parameter value, where the first timer is a prohibit timer reported by an uplink PHR; or, when the first timer is independent of the prohibit timer reported by the uplink PHR, the terminal device triggers the PHR and sends the PHR to the network device.

In a second aspect, an embodiment of the present application provides a terminal device, where the terminal device includes: a processor and a transmitter; the processor is configured to determine a PHR trigger by the terminal device; the transmitter is used for the terminal device to transmit the PHR to the network device; the PHR triggers when any one of the following conditions is met: establishing side link connection; or, side link connection release; or, the side link of the terminal equipment is activated; or, activating a side link carrier of the terminal device; or, the terminal device starts to have side link resources for transmitting data; or, the terminal device starts edge link transmission; or, if the first timer is overtime, the terminal device has side link resources for transmitting data, and for at least one activated carrier of the terminal device, the side link path loss variation value is greater than or equal to the first parameter value; or the terminal equipment performs multicast communication with other terminal equipment and meets a first condition; or, the resource acquisition mode is converted; or the change value of the transmission resource quantity is larger than or equal to the second parameter value; or the terminal equipment has an edge link carrier with a power back-off change value larger than or equal to a third parameter value; the side link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a third aspect, the present application provides a communication apparatus, which may include: at least one processor in which the program instructions involved are executed to implement the functionality of the terminal device in the method according to the first aspect and any of its designs. Optionally, the communication device may further comprise at least one memory storing the program instructions involved. The communication device may be the method of the first aspect and any of its designs for a terminal device.

In a fourth aspect, the present application provides a system-on-chip, which can be applied in a communication device, the system-on-chip comprising: at least one processor in which the program instructions involved are executed to implement the functionality of the terminal device in the method according to the first aspect and any of its designs. Optionally, the system-on-chip may further include at least one memory storing the related program instructions.

In a fifth aspect, the present application provides a computer storage medium, which can be used in a communication device, and which has stored therein program instructions, which when executed, implement the functions of the terminal device according to the method of the first aspect and any design thereof.

In a sixth aspect, the present application provides a computer program product comprising program instructions that when executed are adapted to implement the functionality of the terminal device according to the method of the first aspect and any of its designs.

In a seventh aspect, the present application provides a communication system, which may include any one or more of the following: a terminal device as in the second aspect, or a communication apparatus as in the third aspect, or a system chip as in the fourth aspect, or a computer storage medium as in the fifth aspect, or a computer program product as in the sixth aspect.

It is understood that any one of the above-mentioned apparatuses, system chips, computer storage media, computer program products, or communication systems is used to execute the corresponding method provided above, and therefore, the beneficial effects achieved by the apparatuses, the system chips, the computer storage media, the computer program products, or the communication systems can refer to the beneficial effects in the corresponding methods, and are not described herein again.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a schematic hardware structure diagram of a communication device according to an embodiment of the present application;

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

fig. 4 is a first flowchart of a path loss obtaining method according to an embodiment of the present disclosure;

fig. 5 is a schematic flowchart illustrating a second method for obtaining a path loss according to an embodiment of the present application;

fig. 6 is a third schematic flowchart of a path loss obtaining method according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a PHR trigger method according to an embodiment of the present application;

fig. 8 is a third flowchart of a PHR trigger method according to an embodiment of the present application;

fig. 9 is a first schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 11 is a third schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic block diagram of a communication system 100 according to an embodiment of the present invention. In fig. 1, a communication system 100 includes

network devices

101 and 102, and a

terminal device

103 and 109.

A communication link for performing direct communication between a terminal device and another terminal device may be referred to as a side link or a Sidelink (SL). Such as a direct wireless communication link between terminal device 103 and terminal device 104 in fig. 1, or a direct wireless communication link between terminal device 105 and terminal device 106.

The wireless communication link between the terminal device and the network device may be referred to as an Uplink (UL) or a Downlink (DL), such as a direct wireless communication link between the network device 101 and the terminal device 103 in fig. 1, or a direct wireless communication link between the network device 102 and the terminal device 105. Since the UL or DL interface may be referred to as a Uu port, the UL or DL may be referred to as a Uu port link.

Network device 101, and/or network device 102, provides wireless access services to

terminal device

103 and 109. Specifically, each network device corresponds to a service coverage area, and a terminal device entering the service coverage area can communicate with the network device through the Uu port to receive the wireless access service provided by the network device.

The

network device

101 or 102 may be a transmission reception node (TRP), a base station, a relay station, an access point, or the like. The

network device

101 or 102 may be a network device in a 5G communication system or a network device in a future evolution network, and may also be: a Base Transceiver Station (BTS) in a global system for mobile communication (GSM) or Code Division Multiple Access (CDMA) network, or an nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), or an eNB or enodeb (evolved nodeb) in Long Term Evolution (LTE). The

network device

101 or 102 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario.

The

terminal device

103 and 109 may be a portable computer (e.g., a mobile phone), a notebook computer, a Personal Computer (PC), a wearable electronic device (e.g., a smart watch), a tablet computer, an Augmented Reality (AR)/Virtual Reality (VR) device, a vehicle module, a vehicle computer, a vehicle chip, a vehicle communication system, a wireless terminal in industrial control, and the like.

It should be noted that the communication system 100 shown in fig. 1 is only for example and is not used to limit the technical solution of the present application. It will be appreciated by those skilled in the art that communication system 100 may include other devices, and the number of network devices and terminal devices may be determined according to particular needs, in particular implementations. The network elements in fig. 1 may also be connected by other interfaces.

Optionally, in this embodiment of the present application, each network element in fig. 1, for example, the network device 102 or the terminal device 107, may be a functional module in one device. It is understood that the above functions may be network elements in a hardware device, such as a communication chip in a mobile phone, or software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform).

For example, each network element in fig. 1 may be implemented by the communication device 200 in fig. 2. Fig. 2 is a schematic diagram of a hardware structure of a communication device applicable to the embodiment of the present application. The communication device 200 includes at least one processor 201, communication lines 202, memory 203, and at least one communication interface 204.

The processor 201 may be a general processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present invention.

Communication link 202 may include a path for communicating information between the aforementioned components, such as a bus.

The communication interface 204 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet interface, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 203 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be separate and coupled to the processor via communication line 202. The memory may also be integral to the processor. The memory provided by the embodiment of the application can be generally nonvolatile. The memory 203 is used for storing computer-executable instructions for executing the present invention, and is controlled by the processor 201 to execute the instructions. The processor 201 is configured to execute computer-executable instructions stored in the memory 203, thereby implementing the methods provided by the embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 201 may include one or more CPUs such as CPU0 and CPU1 in fig. 2, for example, as one embodiment.

In particular implementations, communication device 200 may include multiple processors, such as processor 201 and processor 207 in fig. 2, for example, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, communication device 200 may also include an output device 205 and an input device 206, as one embodiment. The output device 205 is in communication with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 206 is in communication with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The communication device 200 described above may be a general purpose device or a special purpose device. In a specific implementation, the communication device 200 may be a desktop, a laptop, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet, a wireless terminal device, an embedded device, or a device with a similar structure as in fig. 2. The embodiment of the present application does not limit the type of the communication device 200.

The PHR trigger method provided in the embodiments of the present application will be specifically described below with reference to fig. 1 and fig. 2.

It should be noted that the PHR trigger method provided in the embodiment of the present application may be applied to multiple fields, for example: the system comprises an unmanned driving field, an automatic driving field, an auxiliary driving field, an intelligent driving field, an internet driving field, an intelligent internet driving field, an automobile sharing field and the like.

It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

It should be noted that the terms "first," "second," and the like in the description of the present application are used for distinguishing between the descriptions and are not intended to indicate or imply relative importance nor order to be construed. The first timer and the like in the present application have timers with different numbers, which are only used for contextual convenience, and the different sequence numbers themselves have no specific technical meaning, for example, the first timer, the second timer and the like can be understood as one or any one of a series of timers. Such as the first reference signal, the second reference signal, etc., may be understood as one or any of a series of reference signals. It is understood that, in the implementation, the timers with different numbers or the reference signals may be the same or the same type of timer, and the present application is not limited thereto.

It is understood that, in the embodiments of the present application, a terminal device and/or a network device may perform some or all of the operations in the embodiments of the present application, and these operations or operations are merely examples, and the embodiments of the present application may also perform other operations or various modifications of the operations. Further, the various operations may be performed in a different order presented in the embodiments of the application, and not all of the operations in the embodiments of the application may be performed.

It can be understood that, where a "carrier" is exemplified in this application, the "carrier" may be replaced with a "cell", for example, the "carrier of the Uu port link" may be replaced with the "cell of the Uu port link", and details thereof are not described herein again.

As shown in fig. 3, for a PHR trigger method provided in an embodiment of the present application, the PHR trigger method includes

operations

301 and 302.

Operation 301, the terminal device determines a PHR trigger.

The terminal device may be any one of the terminal devices in fig. 1, for example, the terminal device 103 or the terminal device 105.

Wherein, the terminal device may maintain one or more independent Media Access Control (MAC) entities for the side link; alternatively, the end device may not maintain a separate MAC entity for the edge link.

For example, in the embodiments of the present application, when any one of the following conditions 1 to 15 is satisfied, the terminal device determines that the PHR triggers:

condition 1: and establishing the side link connection.

The side link may be a wireless communication link established by the terminal device and the other terminal devices in fig. 1. For example, the terminal device may be the terminal device 103 in fig. 1, and the terminal device may also be the terminal device 105 in fig. 1. The other terminal device may be the terminal device 104 in fig. 1, and the other terminal device may also be the

terminal device

106 and 109 in fig. 1.

Optionally, the side link connection establishment may be side link connection establishment of the terminal device;

optionally, the side link connection establishment may be a side link connection establishment of the terminal device.

Optionally, the side link connection establishment may be the side link connection establishment of the MAC entity of the terminal device.

Optionally, the side link connection establishment may be a side link connection establishment of the MAC entity of the terminal device.

Alternatively, the side link connection establishment may be a side link connection establishment of one MAC entity of the terminal device.

Alternatively, the side link connection establishment may be a side link connection establishment of a MAC entity of the terminal device.

As an example, the edge link connection establishment may include an edge link connection establishment start. For example, the terminal device may trigger the PHR before transmitting the first sidelink connection setup request message to the other terminal device; or, the terminal device may trigger the PHR when sending the first sidelink connection setup request message to the other terminal device; or, the terminal device may trigger the PHR after sending the first sidelink connection setup request message to the other terminal device; or, the terminal device may trigger the PHR before receiving the second sidelink connection setup request message sent by the other terminal device; or, the terminal device may trigger the PHR when receiving a second sidelink connection setup request message sent by another terminal device; alternatively, the terminal device may trigger the PHR after receiving the second sidelink connection setup request message sent by the other terminal device.

As another example, the edge link connection establishment may include an edge link connection establishment end. For example, the terminal device may trigger the PHR before receiving the first sidelink connection setup response message sent by the other terminal device; or, the terminal device may trigger the PHR when receiving a first sidelink connection setup response message sent by another terminal device; or, the terminal device may trigger the PHR after receiving the first sidelink connection setup response message sent by the other terminal device; or, the terminal device may trigger the PHR before sending the second sidelink connection setup response message to the other terminal device; or, the terminal device may trigger the PHR when sending the second sidelink connection setup response message to the other terminal device; or, the terminal device may trigger the PHR after sending the second sidelink connection setup response message to the other terminal device; or, the terminal device may trigger the PHR before sending the first sidelink connection setup complete message to the other terminal device; or, the terminal device may trigger the PHR when sending the first sidelink connection setup complete message to the other terminal device; or, the terminal device may trigger the PHR after sending the first sidelink connection setup complete message to the other terminal device; or, the terminal device may trigger the PHR before receiving a second sidelink link connection setup complete message sent by another terminal device; or, the terminal device may trigger the PHR when receiving a second sidelink link connection setup complete message sent by another terminal device; or, the terminal device may trigger the PHR after receiving a second sidelink connection setup complete message sent by another terminal device.

Optionally, the first edge link connection setup request message and the second edge link connection setup request message may be Radio Resource Control (RRC) messages, the first edge link connection setup response message and the second edge link connection setup response message may be RRC response messages, and the first edge link connection setup completion message and the second edge link connection setup completion message may be RRC response messages.

Optionally, the RRC message may be an RRC message of the side link; the RRC response message may be an RRC response message of the edge link.

Condition 2, side link connection release.

Optionally, the side link connection release may be a side link connection release of the terminal device.

Optionally, the side link connection release may be side link connection release of the terminal device MAC entity.

Optionally, the side link connection release may be a side link connection release of the terminal device MAC entity.

Alternatively, the side link connection release may be a side link connection release of one MAC entity of the terminal device.

Alternatively, the side link connection release may be a side link connection release of a MAC entity of the terminal device.

As an example, the edge link connection release may include an edge link connection release start, e.g., the terminal device may trigger the PHR before sending the first edge link connection release request message to the other terminal device; or, the terminal device may trigger the PHR when sending the first sidelink connection release request message to the other terminal device; or, the terminal device may trigger the PHR after sending the first sidelink connection release request message to the other terminal device; or, the terminal device may trigger the PHR before receiving the second sidelink connection release request message sent by the other terminal device; or, the terminal device may trigger the PHR when receiving a second sidelink connection release request message sent by another terminal device; or, the terminal device may trigger the PHR after receiving the second sidelink connection release request message sent by the other terminal device.

As another example, the side link connection release may include an end of the side link connection release, for example, the terminal device may trigger the PHR before receiving the first side link connection release response message sent by the other terminal device; or, the terminal device may trigger the PHR when receiving a first sidelink connection release response message sent by another terminal device; or, the terminal device may trigger the PHR after receiving the first sidelink connection release response message sent by the other terminal device; or, the terminal device may trigger the PHR before sending the second sidelink connection release response message to the other terminal device; or, the terminal device may trigger the PHR when sending the second sidelink connection release response message to the other terminal device; or, the terminal device may trigger the PHR after sending the second sidelink connection release response message to the other terminal device; or, the terminal device may trigger the PHR before sending the first sidelink connection release complete message to the other terminal device; or, the terminal device may trigger the PHR when sending the first sidelink connection release complete message to the other terminal device; or, the terminal device may trigger the PHR after sending the first sidelink connection release complete message to the other terminal device; or, the terminal device may trigger the PHR before receiving a second sidelink connection release completion message sent by another terminal device; or, the terminal device may trigger the PHR when receiving a second sidelink connection release completion message sent by another terminal device; or, the terminal device may trigger the PHR after receiving the second sidelink connection release completion message sent by the other terminal device.

Optionally, the first edge link connection release request message and the second edge link connection release request message may be RRC messages, the first edge link connection release response message and the second edge link connection release response message may be RRC response messages, and the first edge link connection release completion message and the second edge link connection release completion message may be RRC response messages.

Condition 3: and activating or deactivating the side link of the terminal equipment.

It should be noted that the side link activation or deactivation of the terminal device may be one side link activation or deactivation of the terminal device.

The activation or deactivation of the side link of the terminal device may be activation or deactivation of the side link of the MAC entity of the terminal device.

The activation or deactivation of one side link of the terminal device may be activation or deactivation of one side link of the MAC entity of the terminal device.

The activation or deactivation of the edge link of the terminal device may be activation or deactivation of an edge link of one MAC entity of the terminal device.

The activation or deactivation of one edge link of the terminal device may be activation or deactivation of one edge link of one MAC entity of the terminal device.

Optionally, the terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

Optionally, the side link activation of the terminal device includes that at least one side link carrier activation occurs for the first time on the side link; or, the side link starts to have available side link resources; or the side link starts to have side link resources for transmission, or the side link starts to have side link resources except for the side link resources for reception; alternatively, the terminal device starts transmitting side link data on the side link.

Wherein the first occurrence of at least one side link carrier activation on the side link may include: at least one side link carrier appearing on the side link for the first time starts to have usable side link resources; or at least one side link carrier appearing for the first time on the side link starts to have available side link resources for transmission, or at least one side link carrier appearing for the first time on the side link starts to have side link resources other than the side link resources for reception, or the terminal device appearing for the first time on the side link starts to transmit side link data on the side link carrier.

It should be noted that, the side link resources available from the beginning of the first occurrence of at least one side link carrier on the side link may include: the first occurrence of at least one side link carrier on the side link switches from an unavailable side link resource to an available side link resource. The first occurrence of the at least one side link carrier on the side link beginning to have available side link resources for transmission may include a transition of the first occurrence of the at least one side link carrier on the side link from having no side link resources available for transmission to having available side link resources for transmission. The first occurrence of the at least one side link carrier on the side link beginning with side link resources other than side link resources used for reception may include a transition of the first occurrence of the at least one side link carrier on the side link from no side link resources other than side link resources used for reception to having side link resources other than side link resources used for reception. The beginning of the transmission of side link data on the side link carrier by the first occurrence of the terminal device on the side link may include the transition of the first occurrence of the terminal device on the side link from being unable to transmit side link data on the side link carrier to being able to transmit side link data on the side link carrier.

The side link resource that the side link starts to have available may include that the side link switches from the side link resource that is not available to the side link resource that is available to the side link.

Wherein the side link starting to have the side link resource available for transmission may include that the side link is converted from the side link resource not available for transmission to the side link resource available for transmission.

Wherein the side link starting to have side link resources other than the side link resources for receiving may include that the side link is converted from not having side link resources other than the side link resources for receiving to having side link resources other than the side link resources for receiving.

Wherein the terminal device may begin transmitting side-link data on the side-link may include the terminal device transitioning from being unable to transmit side-link data on the side-link to the terminal device transmitting side-link data on the side-link carrier.

It should be noted that, if the terminal device transmits and/or receives side link data on the side link in a Time Division Duplex (TDD) manner, the side link may have symbols, slots, subframes, or frames other than the symbols, slots, subframes, or frames used for receiving the side link data (for example, the side link may have symbols, slots, subframes, or frames used for transmitting the side link data, or the side link may have symbols, slots, subframes, or frames used for both receiving and transmitting the side link data, or the side link may have other types of symbols, slots, subframes, or frames). If the terminal device transmits and/or receives data on the side link in a Frequency Division Duplex (FDD) manner, there may be a transmission carrier on the side link.

Illustratively, when one side link of the MAC entity of the terminal device is activated, the side link starts to have side link resources, and the side link resources can be used to send side link data, and the terminal device triggers the PHR.

Optionally, the side link deactivation of the terminal device includes that the side link starts to have no activated side link carrier; or all side link carriers of the side link are deactivated; or, the side link has no usable side link resource at first; or, the side link has no available side link resources for transmission; or, the side link initially has no side link resources other than the side link resources for receiving; alternatively, the terminal device may begin to be unable to transmit side-link data on the side-link.

The edge link carrier that is not activated at the beginning of the edge link may include an edge link carrier that is not available at the beginning of the edge link; or, the side link has no side link carrier available for transmitting side link resources at the beginning; or, the side link starts to have no side link carrier other than the side link carrier used for receiving the side link resource; alternatively, the sidelink may not have a sidelink carrier that can transmit sidelink data.

It should be noted that the side link carrier of the side link resource that is not available at the beginning of the side link may include a side link carrier that is converted from the side link carrier of the side link resource that is available to the side link carrier of the side link resource that is not available to the side link. The side link carrier for which the side link is initially unavailable to transmit side link resources may include the side link transitioning from having side link carriers available to transmit side link resources to having side link carriers for which the side link is unavailable to transmit side link resources. The side link initially having no side link carriers other than the side link carrier used to receive the side link resources may include the side link transitioning from having side link carriers other than the side link carrier used to receive the side link resources to having no side link carriers other than the side link carrier used to receive the side link resources. The side link carrier for which the side link is initially incapable of transmitting side link data may include the side link transitioning from a side link carrier for which side link data can be transmitted to a side link carrier for which the side link is incapable of transmitting side link data.

All the edge link carriers of the edge link are deactivated, and the edge link carriers which can include the edge link resources which can not be used by all the edge links of the edge link can not be used; or all the carriers of the side link have no side link carrier which can be used for sending side link resources; or all the carriers of the side link have no side link carrier except the side link carrier for receiving the side link resource; or, all the carriers of the side link have no side link carrier capable of transmitting side link data.

Wherein the edge link resource that is not available at the beginning of the edge link may include a transition of the edge link from the edge link resource that is available to the edge link resource that is not available to the edge link.

Wherein the edge link resource for which the edge link is not available to transmit at the beginning may include a transition of the edge link from having edge link resources available to transmit to having edge link resources for which the edge link is not available to transmit.

Wherein the edge link starting to have no edge link resource other than the edge link resource for receiving may include the edge link transitioning from having an edge link resource other than the edge link resource for receiving to having no edge link resource other than the edge link resource for receiving.

Wherein the terminal device being unable to transmit side-link data on the side-link may include the terminal device transitioning from being able to transmit side-link data on the side-link to the terminal device being unable to transmit side-link data on the side-link.

For example, when one side link of the MAC entity of the terminal device is deactivated, the side link starts to have no side link resource available for sending side link data, and the terminal device triggers the PHR.

Condition 4: and activating or deactivating one side link carrier of the terminal equipment.

It should be noted that, the activation or deactivation of one side link carrier of the terminal device may be activation or deactivation of one side link carrier of the MAC entity of the terminal device.

It should be noted that, the activation or deactivation of one side link carrier of the terminal device may be activation or deactivation of one side link carrier of one MAC entity of the terminal device.

Optionally, the activation of one side link carrier of the terminal device may include that the side link carrier starts to have usable side link resources; alternatively, the side link carrier may start to have side link resources available for transmission, or the side link carrier may start to have side link resources other than side link resources available for reception, or the terminal device may start to transmit side link data on the side link carrier.

The side link resource that the side link carrier starts to have available may include that the side link carrier converts from the side link resource that is not available to the side link resource that the side link carrier has available.

Wherein the side link carrier starting to have the side link resource available for transmission may include that the side link carrier switches from having no side link resource available for transmission to having a side link resource available for transmission.

Wherein the side link carrier starting to have side link resources other than side link resources for reception may include the side link carrier transitioning from not having side link resources other than side link resources for reception to having side link resources other than side link resources for reception.

Wherein the terminal device may begin transmitting side link data on the side link carrier may include the terminal device never being able to transmit side link data on the side link carrier to the terminal device being able to transmit side link data on the side link carrier.

It should be noted that, if the terminal device transmits and/or receives side link data on a side link carrier in a TDD manner, the side link carrier has symbols, time slots, subframes, or frames other than symbols, time slots, subframes, or frames used for receiving side link data (for example, the side link carrier may have symbols, time slots, subframes, or frames used for transmitting side link data, or the side link carrier may have symbols, time slots, subframes, or frames used for transmitting side link data and receiving side link data, or the side link carrier may have other types of symbols, time slots, subframes, or frames); if the terminal device transmits and/or receives data on the sidelink carrier in the FDD manner, the sidelink carrier may be a transmission carrier.

Illustratively, when one side link carrier of the MAC entity of the terminal device is activated, the side link carrier starts to have side link resources, and the side link resources can be used to send side link data, and the terminal device triggers the PHR.

Optionally, the deactivation of one side link carrier of the terminal device includes that the side link carrier starts to have no usable side link resource; the edge link carrier begins to have no edge link resources available for transmission, or the edge link carrier begins to have no edge link resources other than edge link resources for reception, or the terminal device begins to be unable to transmit edge link data on the edge link carrier.

The side link resource that the side link carrier does not initially have available may include a transition of the side link carrier from having available side link resource to having no available side link resource.

Wherein the side link resource for which the side link carrier initially has no available transmission may include a transition of the side link carrier from having side link resources available for transmission to having side link resources for which the side link carrier does not have available transmission.

Wherein the side link carrier initially having no side link resources other than side link resources for reception may include the side link carrier transitioning from having side link resources other than side link resources for reception to having no side link resources other than side link resources for reception.

Wherein the terminal device being unable to initially transmit side-link data on the side-link carrier may include the terminal device transitioning from being able to transmit side-link data on the side-link carrier to the terminal device being unable to transmit side-link data on the side-link carrier.

For example, when one side link carrier of the MAC entity of the terminal device is deactivated, the side link carrier starts to have no side link resource that can be used for sending side link data, and the terminal device triggers the PHR.

Condition 5: the terminal device starts to have side link resources for transmitting data.

It should be noted that the edge link resource for the terminal device to start transmitting data may be the edge link resource for the MAC entity of the terminal device to start transmitting data; an MAC entity, which may be a terminal device, starts to have side link resources for transmitting data; the side link resource for transmitting data can be started in one link of the terminal equipment; one carrier, which may be a terminal device, starts with an edge link resource to transmit data.

Optionally, the terminal device starts to have the side link resource for transmitting data includes that the terminal device starts to have the side link resource for transmitting data; alternatively, the terminal device starts to have side link resources for transmitting new data.

Wherein the terminal device starting to have the side link resource for transmitting data may include the terminal device converting from the side link resource not used for transmitting data to the side link resource used for transmitting data.

Wherein the terminal device starting to have the edge link resource for transmitting the new data may include the terminal device switching from an edge link resource not used for transmitting the new data to an edge link resource used for transmitting the new data.

Optionally, the edge link resource for transmitting data may be an edge link resource for transmitting data, and the edge link resource for transmitting new data may be an edge link resource for transmitting new data.

Optionally, the edge link resource used for transmitting data may be an edge link resource used for transmitting unicast data, an edge link resource used for transmitting multicast data, or an edge link resource used for transmitting broadcast data.

Illustratively, the PHR is triggered by the terminal device when the terminal device starts to have side link resources ready for transmitting data.

Illustratively, the terminal device triggers the PHR when the terminal device starts to have side link resources ready for transmitting new data.

Condition 6: the terminal device starts edge link transmission.

It should be noted that, the terminal device starts the transmission of the side link may be that the MAC entity of the terminal device starts the transmission of the side link; one MAC entity, which may be a terminal device, starts a transmission of the sidelink; one link of the terminal equipment starts to have side link transmission; one carrier, which may be a terminal device, starts a side link transmission.

Optionally, the terminal device starting edge link transmission may include the terminal device starting edge link transmission for transmitting data; alternatively, the terminal device starts a sidelink transmission for transmitting new data.

Wherein the terminal device starting to have side link transmission for transmitting data may include the terminal device switching from side link transmission not being used for transmitting data to side link transmission being used for transmitting data.

Wherein the terminal device starting edge link transmission with new data may include the terminal device switching from edge link transmission without new data to edge link transmission with new data.

Alternatively, the edge link transmission for transmitting data may be to transmit data on the edge link resource, and the edge link transmission for transmitting new data may be to transmit new data on the edge link resource.

Optionally, the side link transmission for transmitting data may be side link transmission for transmitting unicast data, side link transmission for transmitting multicast data, or side link transmission for transmitting broadcast data.

Illustratively, when the terminal device starts to transmit data on the sidelink transmission resource, the terminal device triggers the PHR.

Illustratively, when the terminal device starts to transmit new data on the sidelink transmission resource, the terminal device triggers the PHR.

Condition 7: when the first timer is overtime, the terminal equipment has side link resources for transmitting data, and for at least one activated carrier wave of the terminal equipment, the change value of the side link path loss is larger than or equal to the first parameter value.

The terminal device may be a MAC entity of the terminal device, or may be a MAC entity of the terminal device.

The side link resource for transmitting data on the terminal device may be the side link resource for transmitting new data on the terminal device; or, the MAC entity has side link resources for transmitting data; or the MAC entity has side link resources for transmitting new data.

The first timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-ProhibitTimer for uplink PHR reporting, or a timer independent of the prohibit timer for uplink PHR reporting, for example, the PHR-ProhibitTimer for sidelink PHR reporting.

Optionally, the first timer may be started or restarted when the terminal device sends the PHR; or, starting or restarting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the first timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the first timer may expire including the first timer just timed out or the first timer has timed out.

Alternatively, the unit of the first parameter value may be dB, or may be other units, or no unit.

Optionally, the first timer is a timer under the MAC entity, or a timer under the terminal device.

Illustratively, the timeout time of the first timer configured by the network device is 20 subframes, after the terminal device sends the PHR1 to the network device, the first timer is started or restarted, and if there is an edge link resource for transmitting data on the MAC entity in the 20 th subframe after the first timer is started or restarted, and for at least one activated carrier of the MAC entity, the edge link path loss change value is greater than or equal to the first parameter value, the PHR2 is triggered.

Illustratively, the timeout time of the first timer configured by the network device is 20 subframes, after the terminal device sends the PHR1 to the network device, the first timer is started or restarted, and if there is an edge link resource for transmitting new data on the MAC entity at a 22 th subframe after the first timer is started or restarted, and for at least one activated carrier of the MAC entity, the edge link path loss change value is greater than or equal to the first parameter value, the PHR2 is triggered.

Optionally, the change value of the side link path loss of one carrier is a change value between the side link path loss measured at the current side link path loss reference and the side link path loss measured at the side link path loss reference during the last PHR transmission; or, the change value of the side link path loss of one carrier is a change value between the side link path loss measured at the current side link path loss reference and the side link path loss measured at the side link path loss reference at the last PH calculation or PHR packing; or, the side link path loss variation value of one carrier is a variation value between the side link path loss measured at the current side link path loss reference and the side link path loss measured at the side link path loss reference when the PHR triggers last time.

The edge link path loss variation value may be a positive value, a negative value, 0, or an absolute value.

If the side link path loss variation value is a positive value, it can indicate that the side link path loss is increased; if the change value of the path loss of the side link is a negative value, it can indicate that the path loss of the side link becomes small; or, if the side link path loss variation value is a positive value, it may indicate that the side link path loss becomes smaller; if the side link path loss variation value is a negative value, it may indicate that the side link path loss is increased.

If the side link path loss variation value is 0, it can indicate that the side link path loss is not changed.

If the side link path loss change value is an absolute value, it may indicate a value of the side link path loss change, and may not indicate whether the side link path loss is increased or decreased. Optionally, the current side link path loss reference may be the same as or different from the side link path loss reference in the last PHR transmission, or the side link path loss reference in the last PH calculation or PHR packing, or the side link path loss reference in the last PHR trigger.

Optionally, the current edge link path loss reference may belong to the same edge link or belong to the same MAC entity as the edge link path loss reference in the last PHR transmission or the edge link path loss reference in the last PH calculation or the PHR packing or the edge link path loss reference in the last PHR trigger.

Optionally, the first parameter value may be the same as or different from the parameter value used in the uplink PHR trigger condition (e.g., PHR-Tx-powerfactory change dB).

Optionally, as shown in fig. 4, the terminal device may obtain the side link path loss through operation 401 and operation 402.

In operation 401, the terminal device receives a first reference signal transmitted by another terminal device.

In operation 402, the terminal device obtains a side link path loss according to the first reference signal.

Optionally, the terminal device may obtain the side link path loss according to the power of the first reference signal and the received power of the first reference signal measured by the terminal device.

For example, the terminal device may use a difference between the power of the first reference signal and the received power of the first reference signal measured by the terminal device as the side link path loss.

Optionally, the terminal device may obtain the power of the first reference signal by receiving the power of the first reference signal broadcast by the network device or other terminal devices; or, the terminal device may obtain the power of the first reference signal by receiving a dedicated signaling sent by the network device or other terminal devices; or the terminal device stores the power of the first reference signal.

Optionally, the step of storing, by the terminal device, the power of the first reference signal may include: the device manufacturer stores the power of the first reference signal specified by a protocol or a standard in the terminal device before the terminal device leaves a factory, or the network device pre-configures the power of the first reference signal into the terminal device when the terminal device accesses a network.

Optionally, as shown in fig. 5, the terminal device may obtain the side link path loss through operations 501 and 503.

In operation 501, the terminal device transmits a second reference signal to the other terminal device.

And operation 502, the other terminal device obtains the side link path loss according to the second reference signal.

Optionally, the other terminal device may obtain the side link path loss according to the power of the second reference signal and the received power of the second reference signal measured by the other terminal device.

For example, the other terminal device may use a difference between the power of the second reference signal and the received power of the second reference signal measured by the other terminal device as the side link path loss.

Optionally, the other terminal device may obtain the power of the second reference signal by receiving the power of the second reference signal broadcast by the network device or the terminal device; or, the other terminal device may obtain the power of the second reference signal by receiving a dedicated signaling sent by the network device or the terminal device; or the other terminal device stores the power of the second reference signal.

Optionally, the step of storing, by the other terminal device, the power of the second reference signal may include: the device manufacturer stores the power of the second reference signal specified by the protocol or standard in the other terminal device before the other terminal device leaves the factory, or the network device pre-configures the power of the second reference signal in the other terminal device when the other terminal device accesses the network.

In operation 503, the terminal device receives second reference signal response information sent by other terminal devices.

Optionally, the second reference signal response information includes side link path loss acquired by other terminal devices.

Optionally, as shown in fig. 6, the terminal device may obtain the side link path loss through operation 601 and 603.

In operation 601, the terminal device transmits a third reference signal to other terminal devices.

In operation 602, the terminal device receives third reference signal response information sent by other terminal devices.

Optionally, the other terminal device may measure the received power of the third reference signal when receiving the third reference signal sent by the terminal device, and send third reference signal response information to the terminal device, where the third reference signal response information includes the received power of the third reference signal measured by the other terminal device.

In operation 603, the terminal device obtains the side link path loss according to the third reference signal response information.

Optionally, the terminal device may obtain the side link path loss according to the power of the third reference signal and the received power of the third reference signal measured by the other terminal devices.

For example, the terminal device may use a difference between the power of the third reference signal and the received power of the third reference signal measured by the other terminal device as the side link path loss.

Optionally, the terminal device may obtain the power of the third reference signal by receiving the power of the third reference signal broadcast by the network device or other terminal devices; or, the terminal device may obtain the power of the third reference signal by receiving a dedicated signaling sent by the network device or other terminal devices; alternatively, the terminal device may store the power of the third reference signal.

Optionally, the step of storing, by the terminal device, the power of the third reference signal may include: and the equipment manufacturer stores the power of the third reference signal specified by a protocol or a standard in the terminal equipment before the terminal equipment leaves a factory, or the network equipment pre-configures the power of the third reference signal into the terminal equipment when the terminal equipment accesses a network.

Illustratively, when the PHR1 is triggered, the terminal device sends a second reference signal to another terminal device, the another terminal device obtains a first side link path loss according to the second reference signal, and the terminal device receives and stores the first side link path loss sent by the another terminal device; the terminal device receives a first reference signal sent by other terminal devices, acquires a second side link path loss according to the first reference signal, and takes the difference between the second side link path loss and the first side link path loss or the absolute value of the difference between the second side link path loss and the first side link path loss as a side link path loss change value, if a first timer is overtime, when side link resources for transmitting new data exist on the MAC entity and the side link includes a carrier with the side link path loss change value greater than or equal to a first parameter value, the PHR2 is triggered.

Condition 8: the terminal device performs multicast communication with other terminal devices and satisfies a first condition.

The multicast communication may be a group of multicast communication in which the terminal device is located, a plurality of groups of multicast communication in which the terminal device is located, or all the multicast communication in which the terminal device is located.

Optionally, the terminal device performs multicast communication with other terminal devices, and when the first condition is satisfied, the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer is overtime and meets the first condition, and the terminal device determines that the PHR is triggered.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has side link resources for transmitting data, and the terminal device determines PHR triggering when the first condition is satisfied.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has an edge link resource for transmitting new data, and the terminal device determines PHR triggering when the first condition is satisfied.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has uplink resources for transmitting data, and the terminal device determines PHR triggering when the first condition is satisfied.

Optionally, the terminal device performs multicast communication with other terminal devices, the terminal device has an uplink resource for transmitting new data, and the terminal device determines PHR triggering when the terminal device meets the first condition.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer is overtime, the terminal device has side link resources for transmitting data, and the terminal device determines PHR triggering when the first condition is met.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer is overtime, the terminal device has an edge link resource for transmitting new data, and the terminal device determines PHR trigger when the first condition is satisfied.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer is overtime, the terminal device has uplink resources for transmitting data, and the terminal device determines PHR triggering when the first condition is satisfied.

Optionally, the terminal device performs multicast communication with other terminal devices, the second timer is overtime, the terminal device has uplink resources for transmitting new data, and the terminal device determines PHR triggering when the first condition is satisfied.

The second timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting. The second timer may also be a timer independent of a prohibit timer for uplink PHR reporting.

Optionally, the second timer may be started when the terminal device sends the PHR; or, starting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the second timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the second timer may expire including the second timer just timed out or the second timer has timed out.

The edge link resource for transmitting data on the terminal device may be an edge link resource for transmitting data on an MAC entity of the terminal device.

The edge link resource for transmitting the new data on the terminal device may be an edge link resource for transmitting the new data on an MAC entity of the terminal device.

The uplink resource for transmitting the new data on the terminal device may be the uplink resource for transmitting the data on the MAC entity of the terminal device.

The uplink resource for transmitting the new data on the terminal device may be an uplink resource for transmitting the new data on an MAC entity of the terminal device.

Optionally, the second timer is a timer under the MAC entity; or, the timer is under the terminal device.

Optionally, the MAC entity includes an edge link satisfying the first condition.

Wherein the first condition may include any one of the following conditions a-n:

it should be noted that, for M edge links for which the terminal device performs multicast communication, the terminal device may obtain an edge link path loss change value of each edge link and edge link path loss change values of a total of M edge links, where M is a positive integer.

Optionally, the obtaining, by the terminal device, an edge link path loss change value of each edge link includes: for each side link, determining the maximum value of the measured side link path loss change values of the carrier, and determining the maximum value as the side link path loss change value of the side link; or, for each side link, determining the minimum value of the measured side link path loss change values of the carrier, and determining the minimum value as the side link path loss change value of the side link; or, for each side link, determining an average value of the side link path loss variation values of the carrier measured by the side link, and determining the average value as the side link path loss variation value of the side link.

Optionally, the side link path loss variation value of one carrier includes: a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR transmission; or, a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; or a variation value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR trigger.

Optionally, the current side link path loss reference may be the same as or different from the side link path loss reference in the last PHR transmission, or the side link path loss reference in the last PH calculation or PHR packing, or the side link path loss reference in the last PHR trigger.

Condition a: and the number of the edge link path loss change values of the M edge links, which are greater than or equal to the fourth parameter value, is greater than or equal to N, wherein N is a non-negative number or a non-negative integer or a positive number.

The edge link path loss variation value of the edge link may be a positive value, a negative value, 0, or an absolute value.

Optionally, if the change value of the side link path loss of the side link is a positive value, it may indicate that the side link path loss of the side link becomes large; if the change value of the path loss of the side link is a negative value, it can indicate that the path loss of the side link becomes smaller; or, if the side link path loss variation value of the side link is a positive value, it may indicate that the side link path loss of the side link becomes smaller; if the side link path loss variation value of the side link is a negative value, it may indicate that the side link path loss of the side link is increased.

Optionally, if the change value of the side link path loss of the side link is 0, it may indicate that the side link path loss of the side link is not changed.

Optionally, if the side link path loss change value of the side link is an absolute value, the side link path loss change value of the side link may be represented, and it may not be represented whether the side link path loss is increased or decreased.

Optionally, the unit of the fourth parameter value may be dB, or may be other units, or no unit.

Illustratively, end device 105 as shown in fig. 1 is in multicast communication with

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the change values of the side link path loss of the 4 side links are shown in table 1, and if the fourth parameter value is 10dB and N is 3, the terminal device does not trigger the PHR; and if the fourth parameter value is 10dB and N is 2, the terminal equipment triggers the PHR.

TABLE 1

Condition b: and the ratio of the number of the edge link path loss change values of the M edge links, which are greater than or equal to the fifth parameter value, to the M is greater than or equal to R, wherein R is greater than or equal to 0 and less than or equal to 1.

Alternatively, the unit of the fifth parameter value may be dB, or may be other units, or no unit.

For the description that the edge link path loss variation value of the edge link is a positive value, a negative value, 0, or an absolute value, reference may be made to the corresponding description in condition a, and details are not repeated here.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the change values of the side link path loss of the 4 side links are shown in table 2, and if the fifth parameter value is 12dB and R is 0.6, the terminal device does not trigger the PHR; and if the fifth parameter value is 12dB and R is 0.5, the terminal equipment triggers PHR.

TABLE 2

Side link sequence number	Side Link Path loss Change value (dB) of side Link
		1	10
2	12
		3	15
4	9

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the change values of the side link path loss of the 4 side links are shown in table 3, and if the fifth parameter value is 12dB and R is 60%, the terminal device does not trigger the PHR; and if the fifth parameter value is 12dB and R is 50%, the terminal equipment triggers PHR.

TABLE 3

Condition c: and the average value of the side link path loss change values of the M side links is greater than or equal to the sixth parameter value.

Alternatively, the unit of the sixth parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the average of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links is shown in table 4, and if the sixth parameter value is 12dB, the terminal device does not trigger the PHR; and if the sixth parameter value is 10dB, the terminal equipment triggers the PHR.

TABLE 4

Side link sequence number	Side Link Path loss Change value (dB) of side Link
		1	11
2	12
		3	11
4	9
		Mean value of	10.75

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the average of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links is shown in table 5, and if the sixth parameter value is 6dB, the terminal device does not trigger the PHR; and if the sixth parameter value is 4dB, the terminal equipment triggers the PHR.

TABLE 5

Side link sequence number	Side Link Path loss Change value (dB) of side Link
		1	11
2	-4
		3	-6
4	15
		Mean value of	4

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is out of time, the MAC entity has side link resources for transmitting new data, and the average of the side link path loss variation values of the 4 side links, the value before the absolute value of the side link path loss variation values of the 4 side links, and the side link path loss variation values of the 4 side links is shown in table 6, where the side link path loss variation value of the side link is an absolute value. If the sixth parameter value is 10dB, the terminal equipment does not trigger the PHR; and if the sixth parameter value is 8dB, the terminal equipment triggers the PHR.

TABLE 6

Condition d: the maximum value among the edge link path loss variation values of the M edge links is greater than or equal to the seventh parameter value.

Alternatively, the unit of the seventh parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the side link path loss variation values of the 4 side links are as shown in table 7, the maximum value among the side link path loss variation values of the 4 side links is 16, and if the seventh parameter value is 18dB, the terminal device does not trigger the PHR; and if the seventh parameter value is 12dB, the terminal equipment triggers the PHR.

TABLE 7

Side link sequence number	Side Link Path loss Change value (dB) of side Link
		1	11
2	5
		3	16
4	15

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the side link path loss variation values of the 4 side links are as shown in table 8, the maximum value among the side link path loss variation values of the 4 side links is 11, and if the seventh parameter value is 18dB, the terminal device does not trigger the PHR; and if the seventh parameter value is 10dB, the terminal equipment triggers the PHR.

TABLE 8

Side link sequence number	Side Link Path loss Change value (dB) of side Link
		1	11
2	-5
		3	-12
4	9

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is out of time, the MAC entity has side link resources for transmitting new data, and the values of the side link path loss variation values of the 4 side links before the absolute value and the side link path loss variation values of the 4 side links are shown in table 9, where the side link path loss variation values of the side links are absolute values. The maximum value of the side link path loss variation values of the 4 side links is 12, and if the seventh parameter value is 18dB, the terminal equipment does not trigger the PHR; and if the seventh parameter value is 10dB, the terminal equipment triggers the PHR.

TABLE 9

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is out of time, the MAC entity has side link resources for transmitting new data, and the values of the side link path loss variation values of the 4 side links before the absolute value and the side link path loss variation values of the 4 side links are shown in table 10, where the side link path loss variation values of the side links are absolute values. The maximum value of the side link path loss variation values of the 4 side links is 18, and if the seventh parameter value is 20dB, the terminal device does not trigger the PHR; and if the seventh parameter value is 10dB, the terminal equipment triggers the PHR.

Watch 10

Condition e: and a variation value of a maximum value among the side link path losses of the M side links is greater than or equal to the eighth parameter value, wherein the variation value of the maximum value is used for indicating a variation between the maximum values among the side link path losses of the M side links obtained twice.

Wherein, the variation value of the maximum value in the edge link path loss of the edge link may be a positive value, a negative value, 0, or an absolute value.

Optionally, if a variation value of a maximum value in the side link path losses of the M side links is a positive value, it may indicate that the maximum value in the side link path losses of the M side links becomes larger; if the variation value of the maximum value in the side link path losses of the M side links is a negative value, it may indicate that the maximum value in the side link path losses of the M side links becomes smaller; or, if a variation value of a maximum value among the side link path losses of the M side links is a positive value, it may indicate that the maximum value among the side link path losses of the M side links becomes smaller; if the variation value of the maximum value among the side link path losses of the M side links is a negative value, it may indicate that the maximum value among the side link path losses of the M side links is increased.

Optionally, if the variation value of the maximum value in the side link path losses of the M side links is 0, it may indicate that the maximum value in the side link path losses of the M side links is not changed.

Optionally, if the change value of the maximum value in the side link path losses of the M side links is an absolute value, the change value of the maximum value in the side link path losses of the M side links may be represented, and it may not be represented whether the maximum value in the side link path losses of the M side links is increased or decreased.

Optionally, the maximum values of the side link path losses of the M side links obtained twice include a maximum value of the side link path losses of the M side links currently measured and a maximum value of the side link path losses of the M side links measured during the last PHR transmission; or, the maximum value of the currently measured edge link path losses of the M edge links and the maximum value of the edge link path losses of the M edge links measured in the last PH calculation or PHR packing; the maximum value of the currently measured edge link path losses of the M edge links and the maximum value of the edge link path losses of the M edge links measured when the PHR is triggered last time.

Optionally, the edge link where the maximum value of the edge link path losses of the M edge links measured currently is located and the edge link where the maximum value of the edge link path losses of the M edge links measured during the last PHR transmission are located, or the edge link where the maximum value of the edge link path losses of the M edge links measured during the last PH calculation or PHR packing is located or the edge link where the maximum value of the edge link path losses of the M edge links measured during the last PHR triggering is located may be the same or different.

Alternatively, the unit of the eighth parameter value may be dB, or may be other units, or no unit.

Optionally, when the terminal device measures the edge link path loss each time, the edge link path losses of the multiple edge links may be measured, and a maximum value of the edge link path losses of the multiple edge links is taken as the maximum value of the edge link path loss of the edge links.

Optionally, for each edge link, the terminal device determines a maximum value of edge link path losses of the carrier measured by the terminal device, and determines the maximum value as the edge link path loss of the edge link; or, for each side link, the terminal device determines the minimum value of the side link path loss of the carrier measured by the terminal device, and determines the minimum value as the side link path loss of the side link; or, for each side link, the terminal device determines an average value of the side link path losses of the carrier measured by the terminal device, and determines the average value as the side link path loss of the side link.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 11 shows edge link path losses of 4 edge links measured by the terminal device at the last PHR transmission. The side link path loss of the side link 1 is 30 as the maximum.

TABLE 11

Side link sequence number	Edge link path loss of edge link measured at last PHR transmission
		1	30
2	25
		3	20
4	16

Table 12 shows edge link path losses of 4 edge links measured by the current terminal device. The side link path loss of the side link 2 is maximum and is 42.

TABLE 12

Side link sequence number	Currently measured edge link path loss for edge links
		1	35
2	42
		3	10
4	25

The maximum value of the change in the edge link path loss of the 4 edge links has a value of 42-30-12, or 30-42-12, or |42-30| -12.

When the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the variation value of the maximum value among the side link path losses of the 4 side links is 12, if the eighth parameter value is 15, the terminal device does not trigger the PHR, and if the eighth parameter value is 10, the terminal device triggers the PHR.

When the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the variation value of the maximum value among the side link path losses of the 4 side links is-12, if the eighth parameter value is 15, the terminal device does not trigger the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 13 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The side link path loss of the side link 1 is 30 as the maximum.

Watch 13

Table 14 shows the edge link path loss of the 4-edge links measured by the current terminal device. The side link path loss of the side link 2 is 25 at the maximum.

TABLE 14

Side link sequence number	Currently measured edge link path loss for edge links
		1	20
2	25
		3	10
4	18

The maximum value of the change in the edge link path loss of the 4 edge links has a value of 30-25-5, or 25-30-5, or |30-25| -5.

When the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the maximum variation value among the side link path losses of the 4 side links is 5, if the eighth parameter value is 15, the terminal device does not trigger the PHR, and if the eighth parameter value is 5, the terminal device triggers the PHR. When the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the variation value of the maximum value among the side link path losses of the 4 side links is-5, if the eighth parameter value is 15, the terminal device does not trigger the PHR.

Condition f: and the number of the absolute values of the edge link path loss change values of the M edge links, which are greater than or equal to the ninth parameter value, is greater than or equal to P, wherein P is a non-negative number or a non-negative integer or a positive number.

Wherein, the edge link path loss variation value of the edge link can be a positive value, a negative value or 0.

Alternatively, the unit of the ninth parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute values of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links are shown in table 15, and if the ninth parameter value is 10dB and P is 3, the terminal device does not trigger the PHR; and if the ninth parameter value is 10dB and P is 2, the terminal equipment triggers the PHR.

Watch 15

Condition g: and the ratio of the number of the tenth parameter values or more in the absolute values of the edge link path loss change values of the M edge links to the M is greater than or equal to S, wherein S is greater than or equal to 0 and less than or equal to 1.

For the description that the edge link path loss variation value of the edge link is a positive value, a negative value, or 0, reference may be made to the corresponding description in the condition f, and details thereof are not repeated here.

Alternatively, the unit of the tenth parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute values of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links are shown in table 16, and if the tenth parameter value is 12dB and S is 0.6, the terminal device does not trigger the PHR; and if the tenth parameter value is 12dB and S is 0.5, the terminal equipment triggers the PHR.

TABLE 16

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute values of the side link path loss variation values of the 4 side links and the side link path loss variation values of the 4 side links are shown in table 17, and if the tenth parameter value is 12dB and S is 60%, the terminal device does not trigger the PHR; and if the tenth parameter value is 12dB and S is 50%, the terminal equipment triggers the PHR.

TABLE 17

Condition h: the average value of the absolute values of the edge link path loss variation values of the M edge links is greater than or equal to the eleventh parameter value.

Alternatively, the unit of the eleventh parameter value may be dB, or may be otherwise, or have no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the side link path loss variation values of the 4 side links, the absolute side link path loss variation values of the 4 side links, and the average of the absolute side link path loss variation values of the 4 side links are shown in table 18, and if the eleventh parameter value is 12dB, the terminal device does not trigger the PHR; and if the eleventh parameter value is 10dB, the terminal equipment triggers the PHR.

Watch 18

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the side link path loss variation values of the 4 side links, the absolute side link path loss variation values of the 4 side links, and the average of the absolute side link path loss variation values of the 4 side links are shown in table 19, and if the eleventh parameter value is 10dB, the terminal device does not trigger the PHR; and if the eleventh parameter value is 8dB, the terminal equipment triggers the PHR.

Watch 19

Condition i: a maximum value among absolute values of edge link path loss variation values of the M edge links is greater than or equal to the twelfth parameter value.

Alternatively, the unit of the twelfth parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. If the second timer is out of time, the MAC entity has edge link resources for transmitting new data, and the absolute values of the edge link path loss variation values of the 4 edge links and the edge link path loss variation values of the 4 edge links are shown in table 20, where the edge link path loss variation value of the edge link is a negative value. The maximum value of the side link path loss variation values of the 4 side links is 12, and if the twelfth parameter value is 18dB, the terminal equipment does not trigger the PHR; and if the twelfth parameter value is 10dB, the terminal equipment triggers the PHR.

Watch 20

Condition j: the absolute value of the change value of the maximum value in the side link path losses of the M side links is greater than or equal to the thirteenth parameter value, wherein the change value of the maximum value is used to indicate a change between the maximum values in the side link path losses of the M side links obtained twice.

Wherein, the variation value of the maximum value in the edge link path loss of the edge link may be a positive value, a negative value, or 0.

Optionally, if a variation value of a maximum value in the edge link path losses of the M edge links is 0, it may be indicated that the maximum value in the edge link path losses of the M edge links is not changed.

Alternatively, the unit of the thirteenth parameter value may be dB, or may be other units, or no unit.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 21 shows edge link path losses of 4 edge links measured by the terminal device at the last PHR transmission. The side link path loss of the side link 1 is 30 as the maximum.

TABLE 21

Table 22 shows the edge link path loss of the 4-edge links measured by the current terminal device. The side link path loss of the side link 2 is maximum and is 42.

TABLE 22

The maximum value of the edge link path loss of the 4 edge links has a value of 30-42 or 42-30 of-12, and the absolute value of the maximum value of the edge link path loss of the 4 edge links has a value of 12.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the maximum value change value among the side link path losses of the 4 side links is 12, if the thirteenth parameter value is 15, the terminal device does not trigger the PHR, and if the thirteenth parameter value is 10, the terminal device triggers the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 23 shows edge link path losses of 4 edge links measured by the terminal device at the last PHR transmission. The side link path loss of the side link 1 is 30 as the maximum.

TABLE 23

Table 24 shows the edge link path loss of the 4-edge links measured by the current terminal device. The side link path loss of the side link 2 is 25 at the maximum.

Watch 24

The maximum value of the change in the edge link path loss of the 4 edge links is 25-30-5 or 30-25-5, and the absolute value of the maximum value of the change in the edge link path loss of the 4 edge links is 5.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the maximum value change value among the side link path losses of the 4 side links is 5, if the thirteenth parameter value is 15, the terminal device does not trigger the PHR, and if the thirteenth parameter value is 5, the terminal device triggers the PHR.

Condition k: and a variation value of a minimum value among the edge link path losses of the M edge links is greater than or equal to the fourteenth parameter value, wherein the variation value of the minimum value is used for indicating a variation between minimum values among the edge link path losses of the M edge links obtained twice.

Wherein, a variation value of the minimum value among the edge link path losses of the M edge links may be a positive value, a negative value, 0, or an absolute value.

Optionally, if a variation value of the minimum value in the edge link path losses of the M edge links is a positive value, it may indicate that the minimum value in the edge link path losses of the M edge links is increased; if the variation value of the minimum value in the side link path losses of the M side links is a negative value, it may indicate that the minimum value in the side link path losses of the M side links becomes smaller; or, if a variation value of the minimum value among the side link path losses of the M side links is a positive value, it may indicate that the minimum value among the side link path losses of the M side links becomes smaller; if the variation value of the minimum value among the side link path losses of the M side links is a negative value, it may indicate that the minimum value among the side link path losses of the M side links is increased.

Optionally, if a variation value of a minimum value in the edge link path losses of the M edge links is 0, it may indicate that the minimum value in the edge link path losses of the M edge links has not changed.

Optionally, if a change value of the minimum value in the side link path losses of the M side links is an absolute value, the change value of the minimum value in the side link path losses of the M side links may be represented, and it may not be represented whether the minimum value in the side link path losses of the M side links is increased or decreased.

Optionally, the minimum value of the edge link path losses of the M edge links obtained twice includes a minimum value of currently measured edge link path losses of the M edge links and a minimum value of edge link path losses of the M edge links measured during the last PHR transmission; or, the minimum value of the currently measured edge link path losses of the M edge links and the minimum value of the edge link path losses of the M edge links measured during the last PH calculation or PHR packing; the minimum value of the currently measured edge link path losses of the M edge links and the minimum value of the edge link path losses of the M edge links measured when the PHR is triggered last time.

Optionally, the edge link where the minimum value of the currently measured edge link path losses of the M edge links is located and the edge link where the minimum value of the edge link path losses of the M edge links measured during the last PHR transmission is located, or the edge link where the minimum value of the edge link path losses of the M edge links measured during the last PH calculation or PHR packing is located or the edge link where the minimum value of the edge link path losses of the M edge links measured during the last PHR triggering is located may be the same or different.

Alternatively, the unit of the fourteenth parameter value may be dB, or may be another unit, or no unit.

Optionally, when the terminal device measures the side link path loss each time, the side link path losses of the multiple side links may be measured, and a minimum value of the side link path losses of the multiple side links is taken as a minimum value of the side link path loss of the side link.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 25 shows edge link path losses of 4 edge links measured by the terminal device at the last PHR transmission. The edge link path loss of the edge link 4 is the smallest and 16.

TABLE 25

Table 26 shows the edge link path loss of the 4-edge links measured by the current terminal device. The edge link path loss of the edge link 3 is the smallest and 10.

Watch 26

The minimum value among the edge link path losses of the 4 edge links has a variation value of 16-10-6, or 10-16-6, or |16-10| -6.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and a change value of a minimum value in edge link path losses of 4 edge links is 6, if the fourteenth parameter value is 15, the terminal device does not trigger the PHR, and if the fourteenth parameter value is 5, the terminal device triggers the PHR.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and the change value of the minimum value in the edge link path loss of the 4 edge links is-6, if the fourteenth parameter value is 15, the terminal device does not trigger the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 27 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The edge link path loss of the edge link 4 is the smallest and 10.

Watch 27

Side link sequence number	Edge link path loss of edge link measured at last PHR transmission
		1	30
2	25
		3	20
4	10

Table 28 shows the edge link path loss of the 4-edge links measured by the current terminal device. The edge link path loss of the edge link 2 is the smallest and 15.

Watch 28

Side link sequence number	Currently measured edge link path loss for edge links
		1	20
2	15
		3	20
4	18

The minimum value among the edge link path losses of the 4 edge links has a variation value of 15-10-5, or 10-15-5, or |15-10| -5.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and a variation value of a minimum value among the edge link path losses of the 4 edge links is 5, if the fourteenth parameter value is 15, the terminal device does not trigger the PHR, and if the fourteenth parameter value is 5, the terminal device triggers the PHR.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and the change value of the minimum value in the edge link path loss of the 4 edge links is-5, if the fourteenth parameter value is 15, the terminal device does not trigger the PHR.

Condition l: the absolute value of the change value of the minimum value in the edge link path losses of the M edge links is greater than or equal to the fifteenth parameter value, wherein the change value of the maximum value is used to indicate the change between the minimum values in the edge link path losses of the M edge links obtained twice.

Wherein, a variation value of the minimum value among the edge link path losses of the M edge links may be a positive value, a negative value, or 0.

For the description that the variation value of the minimum value among the edge link path losses of the M edge links is a positive value, a negative value, or 0, reference may be made to the corresponding description in the condition k, and details are not described here.

Alternatively, the unit of the fifteenth parameter value may be dB, or may be other units, or no unit.

Optionally, when the terminal device measures the side link path loss each time, the side link path losses of the multiple side links may be measured, and a minimum value of the side link path losses of the multiple side links is taken as a minimum value of the side link path losses of the side links.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 29 shows edge link path losses of 4 edge links measured by the terminal device at the last PHR transmission. The edge link path loss of the edge link 4 is the smallest and 16.

Watch 29

Table 30 shows the edge link path loss of the 4-edge links measured by the current terminal device. The edge link path loss of the edge link 3 is the smallest and 10.

Watch 30

The minimum value among the edge link path losses of the 4 edge links has a value of 16-10 ═ 6 or 10-16 ═ 6, and the absolute value of the minimum value among the edge link path losses of the 4 edge links has a value of 6.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the change value of the minimum value in the side link path loss of the 4 side links is 6, if the fifteenth parameter value is 15, the terminal device does not trigger the PHR, and if the fifteenth parameter value is 6, the terminal device triggers the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 31 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The edge link path loss of the edge link 4 is the smallest and 10.

Watch 31

Table 32 shows the edge link path loss of the 4-edge links measured by the current terminal device. The edge link path loss of the edge link 2 is the smallest and 15.

Watch 32

The minimum value among the edge link path losses of the 4 edge links has a value of 15-10 ═ 5 or 10-15 ═ 5, and the absolute value of the minimum value among the edge link path losses of the 4 edge links has a value of 5.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the change value of the minimum value in the side link path loss of the 4 side links is 5, if the fifteenth parameter value is 15, the terminal device does not trigger the PHR, and if the fifteenth parameter value is 5, the terminal device triggers the PHR.

Condition m: and the variation value of the average value of the side link path losses of the M side links is greater than or equal to the sixteenth parameter value, wherein the variation value of the minimum value is used for indicating the variation between the two obtained average values of the side link path losses of the M side links.

Wherein, the variation value of the average value of the edge link path losses of the M edge links may be a positive value, a negative value, 0, or an absolute value.

Optionally, if a change value of the average value of the side link path losses of the M side links is a positive value, it may indicate that the average value of the side link path losses of the M side links becomes larger; if the change value of the average value of the side link path losses of the M side links is a negative value, it may indicate that the average value of the side link path losses of the M side links becomes smaller; or, if the change value of the average value of the side link path losses of the M side links is a positive value, it may indicate that the average value of the side link path losses of the M side links becomes smaller; if the variation value of the average value of the side link path losses of the M side links is a negative value, it may indicate that the average value of the side link path losses of the M side links is larger.

Optionally, if a variation value of the average value of the edge link path losses of the M edge links is 0, it may be indicated that the average value of the edge link path losses of the M edge links is not changed.

Optionally, if the change value of the average value of the side link path losses of the M side links is an absolute value, the change value of the average value of the side link path losses of the M side links may be represented, and it may not be represented whether the average value of the side link path losses of the M side links is larger or smaller.

Optionally, the average values of the side link path losses of the M side links obtained twice include an average value of the side link path losses of the M side links currently measured and an average value of the side link path losses of the M side links measured during the last PHR transmission; or, the average value of the currently measured edge link path losses of the M edge links and the average value of the edge link path losses of the M edge links measured in the last PH calculation or PHR packing; the average value of the currently measured edge link path losses of the M edge links and the average value of the edge link path losses of the M edge links measured when the PHR is triggered last time.

Alternatively, the unit of the sixteenth parameter value may be dB, or may be other units, or no unit.

Optionally, when the terminal device measures the side link path loss each time, the side link path losses of the multiple side links may be measured, and an average value of the side link path losses of the multiple side links is taken as an average value of the side link path losses of the side links.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 33 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4 edge links is 22.75.

Watch 33

Side link sequence number	Edge link path loss of edge link measured at last PHR transmission
		1	30
2	25
		3	20
4	16
		Mean value of	22.75

Table 34 shows the edge link path loss of the 4-edge links measured by the current terminal device. The average of the edge link path losses for the 4 edge links is 28.

Watch 34

Side link sequence number	Currently measured edge link path loss for edge links
		1	35
2	42
		3	10
4	25
		Mean value of	28

The change in the average value of the edge link path loss of the 4 edge links is 22.75-28-5.25, 28-22.75-5.25, or |22.75-28| -5.25.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and the variation value of the average value of the edge link path loss of the 4 edge links is-5.25, if the sixteenth parameter value is 15, the terminal device does not trigger the PHR.

When the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the variation value of the average value of the side link path loss of the 4 side links is 5.25, if the sixteenth parameter value is 15, the terminal device does not trigger the PHR, and if the sixteenth parameter value is 5, the terminal device triggers the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 35 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4-edge links is 21.25.

Watch 35

Side link sequence number	Edge link path loss of edge link measured at last PHR transmission
		1	30
2	25
		3	20
4	10
		Mean value of	21.25

Table 36 shows the edge link path loss of the 4-edge links measured by the current terminal device. The average of the edge link path loss of the 4 edge links is 18.25.

Watch 36

Side link sequence number	Currently measured edge link path loss for edge links
		1	20
2	15
		3	20
4	18
		Mean value of	18.25

The change in the average value in the edge link path loss of the 4 edge links is 21.25-18.25-3, 18.25-21.25-3, or |21.25-18.25| -3.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and the change value of the average value of the edge link path loss of the 4 edge links is 3, if the sixteenth parameter value is 15, the terminal device does not trigger the PHR, and if the sixteenth parameter value is 3, the terminal device triggers the PHR.

When the second timer is overtime, the MAC entity has edge link resources for transmitting new data, and the change value of the average value of the edge link path loss of the 4 edge links is-3, if the sixteenth parameter value is 15, the terminal device does not trigger the PHR.

Condition n: the absolute value of the change value of the average value in the edge link path losses of the M edge links is greater than or equal to the seventeenth parameter value, wherein the change value of the average value is used to indicate the change between the two obtained average values of the edge link path losses of the M edge links.

Wherein, the variation value of the average value of the edge link path losses of the M edge links may be a positive value, a negative value, or 0.

For the description that the change value of the average value of the edge link path losses of the M edge links is a positive value, a negative value, or 0, reference may be made to the corresponding description in the condition M, and details thereof are not repeated here.

Alternatively, the unit of the seventeenth parameter value may be dB, or may be other units, or no unit.

Optionally, when the terminal device measures the side link path loss each time, the side link path losses of the multiple side links may be measured, and an average value of the side link path losses of the multiple side links is respectively taken as an average value of the side link path losses of the side links.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 37 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4 edge links is 22.75.

Watch 37

Table 38 shows the edge link path loss of the 4-edge links measured by the current terminal device. The average of the edge link path losses for the 4 edge links is 28.

Watch 38

The average value of the edge link path loss of the 4 edge links has a value of 22.75-28 ═ 5.25 or 28-22.75 ═ 5.25, and the absolute value of the average value of the edge link path loss of the 4 edge links has a value of 5.25.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the change value of the average value of the side link path loss of the 4 side links is 5.25, if the seventeenth parameter value is 15, the terminal device does not trigger the PHR, and if the seventeenth parameter value is 5, the terminal device triggers the PHR.

end device

106 and 109. The side link sequence number of the side link established between the terminal device 105 and the terminal device 106 is 1, the side link sequence number of the side link established between the terminal device 105 and the terminal device 107 is 2, the side link sequence number of the side link established between the terminal device 105 and the terminal device 108 is 3, and the side link sequence number of the side link established between the terminal device 105 and the terminal device 109 is 4. Table 39 shows the edge link path loss of the 4-edge links measured by the terminal device at the last PHR transmission. The average of the edge link path loss of the 4-edge links is 21.25.

Watch 39

Table 40 shows the edge link path loss of the 4-edge links measured by the current terminal device. The average of the edge link path loss of the 4 edge links is 18.25.

Watch 40

The average value of the edge link path loss of the 4 edge links has a value of 21.25 to 18.25 ═ 3 or 18.25 to 21.25 ═ 3, and the absolute value of the average value of the edge link path loss of the 4 edge links has a value of 3.

If the second timer is overtime, the MAC entity has side link resources for transmitting new data, and the absolute value of the change value of the average value of the side link path loss of the 4 side links is 3, if the seventeenth parameter value is 15, the terminal device does not trigger the PHR, and if the seventeenth parameter value is 3, the terminal device triggers the PHR. Optionally, the fourth parameter value, the fifth parameter value, the sixth parameter value, the seventh parameter value, the eighth parameter value, the ninth parameter value, the tenth parameter value, the eleventh parameter value, the twelfth parameter value, the thirteenth parameter value, the fourteenth parameter value, the fifteenth parameter value, the sixteenth parameter value, and the seventeenth parameter value may be the same as or different from the parameter value (for example, PHR-Tx-powerfactory change dB) used in the uplink PHR trigger condition.

Regarding the method for the terminal device to acquire the side link path loss when the terminal device performs multicast communication with other terminal devices, reference may be made to the method described in condition 7, and details are not described here again.

Regarding the method for the terminal device to obtain the edge link path loss of each edge link when the terminal device performs multicast communication with other terminal devices, reference may be made to the method described in condition 7, and details are not described here again.

Condition 9: the resource acquisition mode is converted.

It should be noted that the resource acquisition method may also be referred to as a data transmission method.

Optionally, the resource obtaining manner is converted, including the resource obtaining manner of the side link is converted, for example: converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; or, the resource acquisition mode supporting the first mode is converted into the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode; or the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode are converted into the resource acquisition mode supporting the second mode.

Optionally, the resource obtaining mode switching may further include switching resource obtaining modes of an edge link and a Uu link.

Example 1, the resource obtaining manner of the side link and the Uu link is converted, which may include that the resource obtaining manner supporting the Uu link is converted into the resource obtaining manner supporting the side link, for example: converting a resource acquisition mode supporting a Uu link into a resource acquisition mode supporting a first mode; or the resource acquisition mode supporting the Uu link is converted into the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode.

Example 2, the resource obtaining manner of the edge link and the Uu link is converted, where the resource obtaining manner supporting the edge link is converted into a resource obtaining manner supporting the Uu link. For example: converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting a Uu link; or the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode are converted into the resource acquisition mode supporting the Uu link.

Example 3, the resource obtaining manner of the side link and the Uu link may be converted by other resource obtaining manners. For example: converting the resource acquisition mode supporting the Uu link into a resource acquisition mode supporting the Uu link and a resource acquisition mode of a first mode; or the resource acquisition mode supporting the Uu link is converted into the resource acquisition mode supporting the Uu link, the resource acquisition mode in the first mode and the resource acquisition mode in the second mode; or, the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the first mode; or, the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the second mode; or the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode; or the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the Uu link; or the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the Uu link and the resource acquisition mode in the second mode; or the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode are converted into the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode and the resource acquisition mode in the second mode; or, the resource acquisition mode supporting the first mode is converted into the resource acquisition mode supporting the Uu link and the resource acquisition mode supporting the first mode; or, the resource acquisition mode supporting the first mode is converted into a resource acquisition mode supporting the Uu link and a resource acquisition mode supporting the second mode; or, the resource acquisition mode supporting the first mode is converted into a resource acquisition mode supporting a Uu link, a resource acquisition mode of the first mode and a resource acquisition mode of the second mode; or the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode are converted into the resource acquisition mode supporting the Uu link and the resource acquisition mode supporting the first mode; or the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode are converted into the resource acquisition mode supporting the Uu link, the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode; or the resource acquisition mode supporting the Uu link, the resource acquisition mode in the first mode and the resource acquisition mode in the second mode are converted into the resource acquisition mode supporting the Uu link; or the resource acquisition mode supporting the Uu link, the resource acquisition mode in the first mode and the resource acquisition mode in the second mode are converted into the resource acquisition mode supporting the first mode; or the resource acquisition mode supporting the Uu link, the resource acquisition mode in the first mode and the resource acquisition mode in the second mode are converted into the resource acquisition mode supporting the first mode and the resource acquisition mode supporting the second mode; or the resource acquisition mode supporting the Uu link, the resource acquisition mode in the first mode and the resource acquisition mode in the second mode are converted into the resource acquisition mode supporting the Uu link and the resource acquisition mode in the first mode.

The resource obtaining method of the Uu link may include: the network device schedules uplink transmission resources for the terminal device, and may schedule the uplink transmission resources through Downlink Control Information (DCI), that is, may include dynamically scheduled uplink resources; alternatively, the network device configures the granted (configured grant) uplink transmission resource, that is, the network device may also include the semi-statically configured uplink resource.

The resource obtaining manner in the first mode may include: the network device configures edge link transmission resources for the terminal device, and the resource obtaining mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures edge link transmission resources for the terminal device, and the resource obtaining mode in the first mode includes: the terminal device selects an edge link transmission resource.

It should be noted that the edge link transmission resource between the terminal device and another terminal device may be scheduled by the network device, that is, the network device configures the edge link transmission resource for the terminal device. For example, when the terminal device is within the coverage of the network device, the wireless direct communication process between the terminal device and other terminal devices is controlled by the network device, and the terminal device serving as the data sending end may send a control signal and a data signal to other terminal devices serving as the data receiving end on the side link transmission resource configured by the network device; the network device may schedule the side link transmission resource through the DCI, that is, the network device may dynamically schedule the side link resource; alternatively, the network device configures the granted (configured grant) edge link transmission resource, i.e., the network device may semi-statically configure the edge link resource.

It should be noted that the edge link transmission resource between the terminal device and another terminal device may also be determined by the terminal device itself without being controlled by the network device scheduling, for example, the terminal device perceives or competes for the edge link transmission resource, that is, the terminal device selects the edge link transmission resource. For example, in a communication coverage of a network device, the network device may configure an edge link resource pool for the terminal device through a System Information Block (SIB) message or a terminal device RRC signaling, and the terminal device serving as a data sending end may autonomously obtain an edge link transmission resource from the edge link resource pool to send a control signal and a data signal to another terminal device serving as a data receiving end; or, for example, the terminal device as a data sending end autonomously obtains the side link transmission resource from a preconfigured side link resource pool to send the control signal and/or the data signal to another terminal device as a data receiving end outside the communication coverage of the network device. Optionally, the terminal device finds an appropriate edge link transmission resource in the edge link resource pool to send the control signal and/or the data signal by monitoring the busy/idle state of the channel by itself. Optionally, the terminal device obtains a suitable side link transmission resource in the side link resource pool through contention with another terminal device to send the control signal and/or the data signal, where the higher the priority of the V2X service to be transmitted in the terminal device is, the greater the chance that the terminal device contends for the suitable side link transmission resource in the side link resource pool is. Optionally, the terminal device may also pre-store the side link resource pool information, or the network device pre-configures the side link resource pool when the terminal device accesses the network.

Alternatively, the transmission resource may be a resource for transmission.

Optionally, the transmission resource of the side link may be a side link resource for transmission.

Optionally, the resource obtaining mode may be a resource obtaining mode of the terminal device; or, the resource obtaining mode of the MAC entity of the terminal equipment is converted; or, the resource obtaining mode of one MAC entity of the terminal equipment is converted; or, the resource obtaining mode of one link of the terminal equipment is converted; or, the side link resource obtaining mode of one carrier or cell of the terminal equipment is converted.

Optionally, the side link resource obtaining mode may be a side link resource obtaining mode of the terminal device; or, the side link resource obtaining mode of the MAC entity of the terminal equipment is converted; or, the side link resource obtaining mode of one MAC entity of the terminal equipment is converted; or, the side link resource obtaining mode of one side link of the terminal equipment is converted; or, the side link resource obtaining mode of one side link carrier of the terminal equipment is converted.

Illustratively, the side link resource acquisition mode of one MAC entity of the terminal device is converted from the resource acquisition mode supporting the first mode to the resource acquisition mode supporting the second mode, and the terminal device triggers the PHR.

Illustratively, the side link resource obtaining mode of one side link of the terminal device is converted from the resource obtaining mode supporting the first mode to the resource obtaining mode supporting the first mode and the second mode, and the terminal device triggers the PHR.

Illustratively, the side link resource acquisition mode of one side link carrier of the terminal device is converted from the resource acquisition mode supporting the first mode and the second mode to the resource acquisition mode supporting the second mode, and the terminal device triggers the PHR.

Condition 10: the change value of the number of transmission resources is greater than or equal to the second parameter value.

Optionally, the change value of the number of transmission resources is greater than or equal to the second parameter value, and the terminal device determines the PHR trigger.

Optionally, the change value of the number of transmission resources is greater than or equal to the second parameter value, and the third timer is overtime, and the terminal device determines the PHR trigger.

Wherein the variable value of the number of transmission resources may include a variable value of the number of transmission resources of the edge link.

The third timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting. The third timer may also be a timer independent of the prohibit timer for uplink PHR reporting.

Optionally, the third timer may be started or restarted when the terminal device sends the PHR; or, starting or restarting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the third timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the third timer may expire including the third timer just timed out or the third timer has timed out.

Alternatively, the transmission resource may be a resource for transmission.

Optionally, the change value of the number of transmission resources may be a change value of the number of transmission resources of an uplink acquired by a resource acquisition manner of the Uu link; or, the total variation value of the number of the transmission resources of the uplink acquired by the resource acquisition mode of the Uu link and the number of the transmission resources of the side link acquired by the resource acquisition mode of the second mode; or, a total variation value of the number of transmission resources of the uplink acquired by the resource acquisition manner of the Uu link and the number of transmission resources of the side link acquired by the resource acquisition manner of the first mode and the resource acquisition manner of the second mode.

Optionally, the change value of the number of transmission resources of the side link may be a change value of the number of transmission resources of the side link acquired by the resource acquisition manner in the first mode; or, the change value of the transmission resource quantity of the side link is acquired through the resource acquisition mode of the second mode; or, the change value of the number of transmission resources of the side link is obtained by the resource obtaining manner of the first mode and the resource obtaining manner of the second mode.

For the related descriptions of the resource obtaining manner of the Uu link, the resource obtaining manner of the first mode, and the resource obtaining manner of the second mode, reference may be made to the corresponding description in condition 9, and details are not repeated here.

Optionally, the value of the change in the number of transmission resources is greater than or equal to the second parameter value, which may be that the value of the change in the number of transmission resources of the terminal device is greater than or equal to the second parameter value; or the change value of the transmission resource quantity of the MAC entity of the terminal equipment is larger than or equal to the second parameter value; or, the change value of the transmission resource quantity of one MAC entity of the terminal equipment is greater than or equal to the second parameter value; or the change value of the transmission resource quantity of one link of the terminal equipment is greater than or equal to the second parameter value; or the change value of the transmission resource quantity of one carrier of the terminal equipment is larger than or equal to the second parameter value.

Optionally, the value of the change in the number of transmission resources of the side link is greater than or equal to the second parameter value, which may be that the value of the change in the number of transmission resources of the side link of the terminal device is greater than or equal to the second parameter value; or, the change value of the transmission resource quantity of the side link of the MAC entity of the terminal equipment is greater than or equal to the second parameter value; or, the change value of the transmission resource quantity of the side link of one MAC entity of the terminal equipment is greater than or equal to the second parameter value; or the change value of the transmission resource quantity of the side link of one side link of the terminal equipment is greater than or equal to the second parameter value; or, the change value of the transmission resource quantity of the side link carrier of the terminal equipment is larger than or equal to the second parameter value.

Alternatively, the third timer may be a timer under the MAC entity.

Alternatively, the unit of the second parameter value may be dB, or may be other units, or no unit.

Optionally, the change value of the number of transmission resources of the side link may be a change value between the number of transmission resources of the current side link and the number of transmission resources of the side link corresponding to the last PHR transmission.

Optionally, the transmission resource of the corresponding edge link when the PHR is last transmitted may include: the transmission resource of the side link where the PHR was last transmitted, or the transmission resource of the side link corresponding to the power headroom included in the PHR content last transmitted.

The variation value of the number of transmission resources of the side link may be a positive value, a negative value, 0, or an absolute value.

Optionally, if the change value of the number of transmission resources of the side link is a positive value, it may indicate that the number of transmission resources of the side link is increased; if the change value of the number of the transmission resources of the side link is a negative value, it can indicate that the number of the transmission resources of the side link becomes smaller; or, if the change value of the number of transmission resources of the side link is a positive value, it may indicate that the number of transmission resources of the side link becomes smaller; if the change value of the number of transmission resources of the side link is a negative value, it may indicate that the number of transmission resources of the side link is increased.

Optionally, if the change value of the number of transmission resources of the side link is 0, it may indicate that the number of transmission resources of the side link is not changed.

Optionally, if the change value of the number of transmission resources of the side link is an absolute value, the change value of the number of transmission resources of the side link may be represented, and it may not be represented that the number of transmission resources of the side link is increased or decreased.

For example, when the PHR1 is transmitted last time, an edge link of the terminal device acquires the edge link resource 1 in the first mode, and later, the edge link acquires the edge link resource 2 in the first mode, and if the third timer expires and the change value between the number of transmission resources of the edge link resource 2 and the number of transmission resources of the edge link resource 1 is greater than or equal to the second parameter value, the terminal device triggers the PHR 2.

For example, when the PHR1 is transmitted last time, one side link carrier of the terminal device acquires the side link resource 1 through the first mode, and then, the side link carrier acquires the side link resource 2 through the second mode, the third timer times out, and the terminal device triggers the PHR2, where the change value between the number of transmission resources of the side link resource 2 and the number of transmission resources of the side link resource 1 is greater than or equal to the second parameter value.

For example, when the PHR1 is transmitted last time, one MAC entity of the terminal device obtains the edge link resource 1 through the first mode, and later, the MAC entity obtains the edge link resource 2 through the first mode and the second mode, and if the third timer expires and the variation value between the number of transmission resources of the edge link resource 2 and the number of transmission resources of the edge link resource 1 is greater than or equal to the second parameter value, the terminal device triggers the PHR 2.

Condition 11: and the terminal equipment has side link carriers with the power back-off change value larger than or equal to the third parameter value.

Optionally, the terminal device has an edge link carrier whose power backoff change value is greater than or equal to the third parameter value, and determines PHR triggering.

Optionally, the terminal device has an edge link carrier whose power backoff change value is greater than or equal to the third parameter value, and the fourth timer is overtime, and the terminal device determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose power backoff change value is greater than or equal to the third parameter value, and the edge link carrier has an edge link resource, and the terminal device determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose power backoff change value is greater than or equal to the third parameter value, and the carrier has uplink resources, and the terminal device determines the PHR trigger.

Optionally, the terminal device has an edge link carrier with a power backoff change value greater than or equal to the third parameter value, and the terminal device has an edge link resource for transmitting new data, and determines PHR triggering.

Optionally, the terminal device has an edge link carrier with a power backoff change value greater than or equal to the third parameter value, and the terminal device has an edge link resource for transmitting data, and determines PHR triggering.

Optionally, the terminal device has an edge link carrier with a power backoff change value greater than or equal to the third parameter value, and the terminal device has an uplink resource for transmitting new data, and determines PHR triggering.

Optionally, the terminal device has an edge link carrier with a power backoff change value greater than or equal to the third parameter value, and the terminal device has an uplink resource for transmitting data, and determines PHR triggering.

The edge link carrier with the power backoff change value greater than or equal to the third parameter value may be an edge link carrier with the power backoff change value greater than or equal to the third parameter value in the MAC entity of the terminal device.

The fourth timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting. The fourth timer may also be a timer independent of the prohibit timer for uplink PHR reporting.

Optionally, the fourth timer may be started or restarted when the terminal device sends the PHR; or, starting or restarting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the fourth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the fourth timer may expire including the fourth timer just timed out or the fourth timer has timed out.

Optionally, the power backoff change value is greater than or equal to a third parameter value, including: the duration of the power back-off change value being greater than or equal to the third parameter value is greater than or equal to a first preset time.

Optionally, the first preset time may be configured by the network device or the terminal device, or may be preconfigured.

Optionally, the fourth timer may be a timer under the MAC entity.

Alternatively, the unit of the third parameter value may be dB, or may be other units, or no unit.

Optionally, the power backoff change value includes: a change value between the power backoff required currently and the power backoff required when the terminal device transmits the PHR last time; or, the change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or packages the PHR last time; or, a change value between the currently required power backoff and the power backoff required when the terminal device triggers the PHR last time; or, a required power backoff corresponding to a power headroom included in the PHR content of the last transmission.

Wherein, the power back-off variation value can be a positive value, a negative value, 0 or an absolute value.

Optionally, if the power backoff change value is a positive value, it may indicate that the power backoff is increased; if the power back-off variation value is a negative value, it may indicate that the power back-off is smaller; or, if the power back-off variation value is a positive value, it may indicate that the power back-off becomes smaller; if the power back-off variation value is negative, it can indicate that the power back-off is large.

Alternatively, if the power back-off variation value is 0, it may indicate that the power back-off is not changed.

Alternatively, if the power back-off change value is an absolute value, the value of the power back-off change may be represented, but it may not represent whether the power back-off is larger or smaller.

Illustratively, when the fourth timer is overtime, the MAC entity has an edge link resource for transmitting new data, the MAC entity has an edge link carrier with a power backoff change value greater than or equal to the third parameter value, and the carrier has an edge link resource; the terminal equipment triggers the PHR.

Condition 12: and if the fifth timer is overtime, the terminal equipment has side link resources for transmitting data, and for at least one activated carrier of the terminal equipment, the absolute value of the side link path loss change value is greater than or equal to the eighteenth parameter value.

The fifth timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting, or a timer independent of the prohibit timer for uplink PHR reporting.

Optionally, the fifth timer may be started or restarted when the terminal device sends the PHR, or after the terminal device sends the PHR, or when the terminal device packages the PHR or calculates the PH, or after the terminal device packages the PHR or calculates the PH.

Optionally, the timeout time of the fifth timer may be configured by the network device or the terminal device, or may be preset.

Optionally, the fifth timer may expire including the fifth timer just timed out or the fifth timer has timed out.

Alternatively, the unit of the eighteenth parameter value may be dB, or may be other units, or no unit.

Optionally, the fifth timer is a timer under the MAC entity, or a timer under the terminal device.

Illustratively, the timeout time of the network device configuring the fifth timer is 20 subframes, after the terminal device sends the PHR1 to the network device, the fifth timer is started or restarted, and if there is an edge link resource for transmitting new data on the MAC entity in the 20 th subframe after the fifth timer is started or restarted, and an absolute value of an edge link path loss variation value is greater than or equal to an eighteenth parameter value for at least one activated carrier of the MAC entity, the PHR2 is triggered.

Illustratively, the timeout time of the network device configuring the fifth timer is 20 subframes, after the terminal device sends the PHR1 to the network device, the fifth timer is started or restarted, and if there is an edge link resource for transmitting data on the MAC entity at the 22 th subframe after the fifth timer is started or restarted, and an absolute value of an edge link path loss variation value is greater than or equal to an eighteenth parameter value for at least one activated carrier of the MAC entity, the PHR2 is triggered.

For the description of the edge link path loss variation value of one carrier, reference may be made to the corresponding description in condition 7, and details are not described here.

Wherein, the edge link path loss variation value can be a positive value, a negative value or 0.

For the description that the edge link path loss variation value is a positive value, a negative value, or 0, reference may be made to the corresponding description in condition 7, and details thereof are not repeated here.

Optionally, the eighteenth parameter value may be the same as or different from the parameter value used in the uplink PHR trigger condition (e.g., PHR-Tx-powerfactory change dB).

As for the method for acquiring the side link path loss by the terminal device, reference may be made to the method described in the above condition 7, and details are not described here.

Condition 13: the absolute value of the change value of the number of transmission resources is greater than or equal to the nineteenth parameter value.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the nineteenth parameter value, and the terminal device determines the PHR trigger.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the nineteenth parameter value, and the sixth timer is overtime, and the terminal device determines that the PHR triggers.

Wherein, the absolute value of the variation value of the number of transmission resources may include an absolute value of the variation value of the number of transmission resources of the edge link.

The sixth timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting. The seventh timer may also be a timer independent of the prohibit timer for uplink PHR reporting.

Optionally, the sixth timer may be started or restarted when the terminal device sends the PHR; or, starting or restarting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the sixth timer may be configured by the network device or the terminal device, or may be preset.

Alternatively, the sixth timer may expire including the sixth timer just timed out or the sixth timer has timed out.

Alternatively, the transmission resource may be a resource for transmission.

Optionally, the absolute value of the change value of the number of transmission resources may be an absolute value of a change value of the number of transmission resources of an uplink acquired by a resource acquisition manner of the Uu link; or, the absolute value of the total variation value of the number of the transmission resources of the uplink acquired by the resource acquisition mode of the Uu link and the number of the transmission resources of the side link acquired by the resource acquisition mode of the second mode; or, an absolute value of a total variation value of the number of transmission resources of the uplink acquired by the resource acquisition manner of the Uu link and the number of transmission resources of the edge link acquired by the resource acquisition manner of the first mode and the resource acquisition manner of the second mode.

Optionally, the absolute value of the change value of the number of transmission resources of the side link may be the absolute value of the change value of the number of transmission resources of the side link acquired by the resource acquisition manner in the first mode; or, obtaining the absolute value of the change value of the transmission resource quantity of the side link through the resource obtaining mode of the second mode; or, the absolute value of the change value of the number of transmission resources of the side link acquired by the first mode resource acquisition mode and the second mode resource acquisition mode.

For the description of the resource obtaining manner of the Uu link, the resource obtaining manner of the first mode, and the resource obtaining manner of the second mode, reference may be made to the corresponding description in condition 9, and details are not described here again.

Optionally, the absolute value of the change value of the number of transmission resources is greater than or equal to the nineteenth parameter value, where the absolute value of the change value of the number of transmission resources of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the number of transmission resources of the MAC entity of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the number of transmission resources of one MAC entity of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the number of transmission resources of one link of the terminal device is greater than or equal to the nineteenth parameter value, or the absolute value of the change value of the number of transmission resources of one carrier of the terminal device is greater than or equal to the nineteenth parameter value.

Optionally, the absolute value of the change value of the number of transmission resources of the side link is greater than or equal to the nineteenth parameter value, where the absolute value of the change value of the number of transmission resources of the side link of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the number of transmission resources of the side link of the MAC entity of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the number of transmission resources of the side link of one MAC entity of the terminal device is greater than or equal to the nineteenth parameter value; or, the absolute value of the change value of the transmission resource number of the side link of one side link of the terminal device is greater than or equal to the nineteenth parameter value, or the absolute value of the change value of the transmission resource number of the side link of one side link carrier of the terminal device is greater than or equal to the nineteenth parameter value.

Alternatively, the sixth timer may be a timer under the MAC entity.

Alternatively, the unit of the nineteenth parameter value may be dB, or may be other units, or no unit.

Alternatively, the variation value of the number of transmission resources of the edge link may be a positive value, a negative value, or 0.

For the description that the change value of the number of transmission resources of the edge link is a positive value, a negative value, or 0, reference may be made to the corresponding description in condition 10, and details thereof are not repeated here.

Illustratively, when the PHR1 is transmitted last time, an edge link of the terminal device acquires the edge link resource 1 in the first mode, and later, the edge link acquires the edge link resource 2 in the first mode, and if the sixth timer expires and the absolute value of the change value between the number of transmission resources of the edge link resource 2 and the number of transmission resources of the edge link resource 1 is greater than or equal to the nineteenth parameter value, the terminal device triggers the PHR 2.

For example, when the PHR1 is transmitted last time, one side link carrier of the terminal device acquires the side link resource 1 through the first mode, and later, the side link carrier acquires the side link resource 2 through the second mode, the sixth timer times out, and the absolute value of the change value between the number of transmission resources of the side link resource 2 and the number of transmission resources of the side link resource 1 is greater than or equal to the nineteenth parameter value, and the terminal device triggers the PHR 2.

For example, when the PHR1 is transmitted last time, one MAC entity of the terminal device acquires the edge link resource 1 through the first mode, and later, the MAC entity acquires the edge link resource 2 through the first mode and the second mode, and if the sixth timer expires and the absolute value of the change value between the number of transmission resources of the edge link resource 2 and the number of transmission resources of the edge link resource 1 is greater than or equal to the nineteenth parameter value, the terminal device triggers the PHR 2.

Condition 14: the terminal equipment has side link carriers with the absolute value of the power back-off change value larger than or equal to the twentieth parameter value.

Optionally, the terminal device determines PHR triggering, where the terminal device has an edge link carrier with a power backoff change value whose absolute value is greater than or equal to the twentieth parameter value.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the terminal device determines the PHR trigger if the seventh timer is overtime.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the edge link carrier has an edge link resource, and the terminal device determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the carrier has uplink resources, and the terminal device determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the terminal device has an edge link resource for transmitting new data, and determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the terminal device has an edge link resource for transmitting data, and determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the terminal device has an uplink resource for transmitting new data, and determines the PHR trigger.

Optionally, the terminal device has an edge link carrier whose absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, and the terminal device has an uplink resource for transmitting data, and determines the PHR trigger.

The edge link carrier for which the absolute value of the power backoff change value of the terminal device is greater than or equal to the twentieth parameter value may be an edge link carrier for which the absolute value of the power backoff change value of the MAC entity of the terminal device is greater than or equal to the twentieth parameter value.

The seventh timer may be a prohibit timer for uplink PHR reporting, for example, a PHR-prohibit timer for uplink PHR reporting. The eighth timer may also be a timer independent of the prohibit timer for uplink PHR reporting.

Optionally, the seventh timer may be started or restarted when the terminal device sends the PHR; or, starting or restarting after the terminal equipment sends the PHR; or, starting or restarting when the terminal equipment packs the PHR or calculates the PH; or, the PHR is packaged or the PH is calculated by the terminal equipment and then the terminal equipment is started or restarted.

Optionally, the timeout time of the seventh timer may be configured by the network device or the terminal device, or may be preset.

Alternatively, the seventh timer may expire including the seventh timer just timed out or the seventh timer has timed out.

Optionally, the absolute value of the power backoff change value is greater than or equal to the twentieth parameter value, including: the duration of the absolute value of the power backoff change value being greater than or equal to the twentieth parameter value is greater than or equal to the second preset time.

Optionally, the second preset time may be configured by the network device or the terminal device, or may be preconfigured.

Alternatively, the seventh timer may be a timer under the MAC entity.

Alternatively, the unit of the twentieth parameter value may be in dB, or may be in other units, or no unit.

Alternatively, the power backoff change value may be a positive value, a negative value, or 0.

For the description that the power backoff change value is a positive value, a negative value, or 0, reference may be made to the corresponding description in condition 11, and details thereof are not repeated here.

Illustratively, when the seventh timer expires, the MAC entity has an edge link resource for transmitting new data, and the MAC entity has an edge link carrier having a power backoff change value with an absolute value greater than or equal to the third parameter value, and the carrier has an edge link resource; the terminal equipment triggers the PHR.

Condition 15: the eighth timer times out.

It should be noted that the eighth timer may be a periodic timer used for uplink PHR reporting, for example, PHR-PeriodicTimer used for uplink PHR reporting, or a timer independent of the periodic timer used for uplink PHR reporting.

Optionally, the eighth timer may be started when the terminal device sends the PHR, or may be started after the terminal device sends the PHR.

Optionally, the timeout time of the eighth timer may be configured by the network device or the terminal device, or may be preset.

Alternatively, the eighth timer may expire including the eighth timer just timed out or the eighth timer has timed out.

Optionally, the terminal device may maintain one or more independent MAC entities for the side link; alternatively, the terminal device does not maintain an independent MAC entity for the edge link.

Optionally, the eighth timer may be a timer under the one or more independent MAC entities, or the eighth timer may be a timer under the MAC entity.

Illustratively, when the eighth timer expires, the terminal device triggers the PHR.

Condition 16: configuring or reconfiguring the power headroom reporting function by a higher layer, wherein the configuration is not used for forbidding the function.

Optionally, the function of reporting the configured or reconfigured power headroom by the higher layer may include a function of reporting the power headroom on the higher layer configured or reconfigured sidelink; or, the high layer configures or reconfigures the reporting function of the power headroom on the uplink; or the high layer configures or reconfigures the reporting function of the power headroom on the side link and the uplink; or the higher layer configures or reconfigures the total power headroom reporting function on the side link and the uplink.

Optionally, the terminal device may maintain one or more independent MAC entities for the side link; alternatively, the end device may not maintain a separate MAC entity for the edge link.

Optionally, the higher layer configuring or reconfiguring power headroom reporting function may be a function under the one or more independent MAC entities; alternatively, the higher layer configuration or reconfiguration power headroom reporting function may be a function under the MAC entity.

Exemplarily, the higher layer configures or reconfigures the power headroom reporting function, and the configuration is not used for disabling the function; the terminal equipment triggers the PHR.

Operation 302, the terminal device sends the PHR to the network device.

Further, after the PHR is triggered, if the terminal device does not have uplink resources available for transmitting the PHR, the terminal device may also request the network device for uplink resources used for transmitting the PHR. Specifically, as shown in fig. 7, the operation 302 includes

operations

701 and 703.

The uplink resource which the terminal device does not have to use for transmitting the PHR may include: the duration that the terminal equipment does not have the uplink resource for transmitting the PHR is greater than or equal to a third preset time.

Optionally, the third preset time may be configured by the network device or the terminal device, and may be preconfigured.

Optionally, the third preset time may be a time when the terminal device obtains the first edge link resource after the PHR is triggered.

For example, after the PHR is triggered, the duration that the terminal device has no uplink resource available for transmitting the PHR is greater than or equal to a third preset time, and the terminal device requests the network device for the uplink resource used for transmitting the PHR.

For example, after the PHR is triggered, the terminal device does not have uplink resources available for sending the PHR, until the terminal device obtains the first side link resource, the terminal device still does not have uplink resources available for sending the PHR, and the terminal device requests the network device for the uplink resources used for sending the PHR.

The terminal device may obtain the first edge link resource for the terminal device to obtain the first edge link resource for transmission.

Optionally, the terminal device obtaining the first side link resource may obtain the first side link resource for an MAC entity of the terminal device; or, a MAC entity of the terminal equipment obtains a first side link resource; or, one side link of the terminal equipment obtains a first side link resource; or, one carrier of the terminal device obtains the first side link resource.

Operation 701, if the PHR is triggered, the terminal device triggers a request, where the request is used to request uplink resources for the PHR.

It should be noted that, if the PHR is triggered and the terminal device determines that there is no uplink resource available for sending the PHR, the terminal device may trigger a request, where the request is used to request the uplink resource for the PHR.

Optionally, the terminal device having no uplink resource available for sending the PHR includes: the MAC entity of the terminal device has no uplink resource available for transmitting the PHR.

Alternatively, the MAC entity may be a MAC entity associated with the triggered PHR.

Optionally, the MAC entity of the terminal device may include all MAC entities of the terminal device, or one MAC entity of the terminal device. The MAC entity may be a MAC entity maintained by the terminal device as a primary base station, or a MAC entity maintained by the terminal device as a secondary base station.

Optionally, the terminal device does not have an uplink resource for sending the PHR, which may indicate that uplink transmission is sparse or does not have uplink transmission, and the PHR cannot be sent.

Optionally, the request is a Buffer Status Report (BSR), or the request is a Scheduling Request (SR).

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the terminal device triggers a BSR.

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the terminal device triggers the SR.

Optionally, the BSR includes any one of: padding BSR, regular BSR, periodic BSR, or other BSR. Optionally, the other BSR may be a PHR BSR, a side link PHR BSR, or a side link BSR, and the other BSR may be configured to request uplink resources for the PHR.

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the network device allocates the uplink resource to the terminal device, and the padding bit number is greater than or equal to the BSRMAC Control Element (CE) and the bit number of its subheader, and the terminal device triggers padding BSR.

Illustratively, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the padding BSR is triggered.

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, a regular BSR is triggered.

Illustratively, if the terminal device determines that there is no uplink resource available for transmitting the PHR, a periodic BSR is triggered.

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, other BSRs are triggered.

Further, if the terminal device fails to request uplink resources for the PHR after triggering the BSR, the terminal device triggers an SR, which is used for requesting uplink resources for the PHR.

Optionally, the failure to request uplink resources for the PHR may include: the triggered regular BSR fails to transmit successfully; or, the triggered regular BSR fails to apply for uplink resources successfully; or, the triggered padding BSR fails to transmit successfully; or, the triggered padding BSR fails to apply for uplink resources successfully; or, the triggered periodic BSR fails to be successfully transmitted; or, the triggered periodic BSR fails to apply for uplink resources successfully; or, the triggered other BSRs fail to transmit successfully; or, the triggered other BSRs fail to apply for uplink resources.

Optionally, the failure of the triggered padding BSR to apply for the uplink resource may include that a Buffer Status (BS) is 0.

Optionally, if the request is an SR, the terminal device receives SR configuration information from the network device, where the SR configuration information is used to configure an SR, and the SR is used to request an uplink resource for the PHR; or the terminal device stores the SR configuration information for applying for the uplink resource for the PHR.

The terminal device stores SR configuration information for applying for the uplink resource for the PHR, and the SR configuration information comprises terminal device configuration or pre-configuration information for applying for the uplink resource for the PHR.

It should be noted that the terminal device may configure the SR according to the SR configuration information, and after the network device receives the SR sent by the terminal device, the network device knows that the terminal device wants to request the uplink resource for sending the PHR, so the network device may allocate a suitable uplink resource to the terminal device to meet the report of the PHR.

Illustratively, if the terminal device does not have the uplink resource available for transmitting the PHR, the network device allocates the uplink resource to the terminal device, and the number of bits to be filled is greater than or equal to the number of bits of the BSR MAC CE and the subheader thereof, the terminal device triggers the BSR to be filled, and if the application for the uplink resource is successful, the network device may allocate the uplink resource for transmitting the PHR to the terminal device according to the BSR to be filled; if the application of the uplink resource fails (for example, a Buffer Status (BS) is 0), the terminal device triggers the SR, and if the application of the uplink resource succeeds, the network device may allocate the uplink resource for transmitting the PHR to the terminal device according to the transmitted SR; and if the uplink resource application fails, the terminal equipment triggers random access.

Illustratively, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the terminal device triggers a conventional BSR, a padding BSR, a periodic BSR, or another BSR, and if the application for the uplink resource is successful, the network device may allocate the uplink resource for transmitting the PHR to the terminal device according to the conventional BSR, the padding BSR, the periodic BSR, or another BSR; if the application of the uplink resource fails (for example, the BSR cannot be successfully transmitted, or a Buffer Status (BS) is 0, etc.), the terminal device triggers the SR, and if the application of the uplink resource succeeds, the network device may allocate the uplink resource for transmitting the PHR to the terminal device according to the transmitted SR; and if the uplink resource application fails, the terminal equipment triggers random access.

For example, if the terminal device determines that there is no uplink resource available for transmitting the PHR, the terminal device triggers an SR, and if the application for the uplink resource is successful, the network device may allocate the uplink resource for transmitting the PHR to the terminal device according to the transmitted SR; and if the uplink resource application fails, the terminal equipment triggers random access.

In operation 702, the terminal device receives a request response sent by the network device, where the request response includes uplink resources for the PHR.

In operation 703, the terminal device sends the PHR to the network device.

Optionally, the terminal device sends the PHR to the network device on the uplink resource allocated by the network device and available for sending the PHR.

Optionally, the PHR includes power headroom information of a side link of the terminal device.

The power headroom information of the side link of the terminal device may include one or more of the following information: the power headroom calculated by the edge link alone, the power headroom calculated by the edge link first mode resource acquisition mode alone, the power headroom calculated by the edge link second mode resource acquisition mode alone, the power headroom calculated by the uplink alone, the total power headroom calculated by the edge link and the uplink, the total power headroom calculated by the edge link first mode resource acquisition mode and the uplink, and the total power headroom calculated by the edge link second mode resource acquisition mode and the uplink.

Further, as shown in fig. 8, operation 801 is also included before operation 302.

Operation 801: the terminal device determines the first information.

The first information is used for indicating the terminal equipment to report the power margin information of the side link; or, the method is used for indicating the terminal device not to report the power headroom information of the side link.

Optionally, if the first information is used to indicate the terminal device to report the power headroom information of the side link, the first information may further include the number of reported PHR (e.g., 1 PHR, two PHR, 3 PHR, or multiple PHR).

For example, if the first information indicates that 1 PHR is reported, the PHR may include one or more of the following information: the power headroom calculated by the edge link alone, the power headroom calculated by the edge link first mode resource acquisition mode alone, the power headroom calculated by the edge link second mode resource acquisition mode alone, the power headroom calculated by the uplink alone, the total power headroom calculated by the edge link and the uplink, the total power headroom calculated by the edge link first mode resource acquisition mode and the uplink, and the total power headroom calculated by the edge link second mode resource acquisition mode and the uplink.

For example, if the first information indicates that multiple PHR are reported, each PHR may include one or more of the following information: the power headroom calculated by the edge link alone, the power headroom calculated by the edge link first mode resource acquisition mode alone, the power headroom calculated by the edge link second mode resource acquisition mode alone, the power headroom calculated by the uplink alone, the total power headroom calculated by the edge link and the uplink, the total power headroom calculated by the edge link first mode resource acquisition mode and the uplink, and the total power headroom calculated by the edge link second mode resource acquisition mode and the uplink.

The description of the resource obtaining manner in the first mode and the resource obtaining manner in the second mode may refer to the corresponding description in condition 9, and is not described herein again.

Optionally, the terminal device determines the first information according to the indication information sent by the network device; optionally, the indication information sent by the network device is the first information, or the terminal device determines the first information according to pre-stored indication information, where the indication information is used to indicate the first information, and optionally, the pre-stored indication information is the first information.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that, in order to implement the above functions, the terminal device or the network device and the like include a hardware structure and/or a software module corresponding to each function. Those skilled in the art will readily appreciate that the various illustrative elements and algorithm operations described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal device may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. 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.

For example, in the case where the functional modules are divided in an integrated manner, fig. 9 shows a schematic configuration diagram of a terminal device 90. The terminal device 90 includes: a determining module 901 and a sending module 902. A determining module 901, configured to determine PHR triggering by a terminal device; a sending module 902, configured to send the PHR to a network device by a terminal device; the PHR triggers when any one of the following conditions is met: establishing side link connection; or, side link connection release; or, activating a side link of the terminal equipment; or, activating a side link carrier of the terminal device; or the terminal equipment starts to have side link resources for transmitting data; or the terminal equipment starts edge link transmission; or, if the first timer is overtime, the terminal device has side link resources for transmitting data, and for at least one activated carrier of the terminal device, the side link path loss variation value is greater than or equal to the first parameter value; or the terminal equipment performs multicast communication with other terminal equipment and meets the first condition; or, the resource acquisition mode is converted; or the change value of the transmission resource quantity is larger than or equal to the second parameter value; or the terminal equipment has side link carriers with the power back-off change value larger than or equal to the third parameter value; the side link is a direct connection wireless communication link between the terminal device and other terminal devices.

Optionally, the side link connection establishment includes: the side link connection establishment starts or the side link connection establishment ends.

Optionally, the resource obtaining manner is converted, including: converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; or, the resource acquisition mode supporting the first mode is converted into the resource acquisition mode supporting the first mode and the second mode; or, the resource acquisition mode supporting the first mode and the second mode is converted into the resource acquisition mode supporting the second mode.

Optionally, the resource obtaining manner in the first mode includes: the network device configures the side link transmission resource for the terminal device, and the resource obtaining mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource acquisition mode in the first mode comprises the following steps: the terminal device selects the edge link transmission resource.

Optionally, the first condition includes: the multicast communication carried out by the terminal equipment establishes M edge links, and the terminal equipment obtains the edge link path loss change value of each edge link, wherein the edge link path loss change values are M in total; the number of the fourth parameter values which are greater than or equal to the number of the M side link path loss change values is greater than or equal to N; or the ratio of the number of the fifth parameter values which are greater than or equal to the number of the M side link path loss change values to M is greater than or equal to R; or, the average value of the path loss variation values of the M side links is greater than or equal to the sixth parameter value; or, the maximum value of the M side link path loss change values is greater than or equal to the seventh parameter value; or, a variation value of a maximum value in the path losses of the M edge links is greater than or equal to an eighth parameter value, where the variation value of the maximum value is used to indicate a variation between two obtained maximum values; wherein M is a positive integer, N is a non-negative number, and R is greater than or equal to 0 and less than or equal to 1.

Optionally, the edge link path loss variation value of the carrier includes: a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR transmission; or, a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; or a variation value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR trigger.

Optionally, the power backoff change value includes: a change value between the power backoff required currently and the power backoff required when the terminal device transmits the PHR last time; or, the change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or packages the PHR last time; or a change value between the currently required power backoff and the power backoff required the last time the terminal device triggers the PHR.

Optionally, as shown in fig. 10, the terminal device further includes: a triggering module 903. A triggering module 903, configured to trigger a request by a terminal device, where the request is used to request uplink resources for a PHR.

Optionally, the determining module 901 is further configured to determine, by the terminal device, that there is no uplink resource for the PHR.

Optionally, the request is a BSR, or the request is an SR.

Optionally, the triggering module 903 is further configured to trigger the SR if the terminal device fails to request the uplink resource for the PHR through the BSR, where the SR is used to request the uplink resource for the PHR.

Optionally, the BSR includes any one of: padding BSR, regular BSR, or periodic BSR.

Optionally, as shown in fig. 11, the terminal device further includes: a receiving module 904. A receiving module 904, configured to receive, by a terminal device, SR configuration information from a network device, where the SR configuration information is used to configure an SR, and the SR is used to request an uplink resource for a PHR; or the terminal device stores the SR configuration information.

Optionally, the PHR includes power information of the side link of the terminal device.

Optionally, the determining module 901 is further configured to determine, by the terminal device, first information, where the first information is used to indicate that the terminal device reports power information of the side link.

Optionally, the terminal device determines the first information according to the indication information sent by the network device; or the terminal equipment determines the first information according to the pre-stored indication information.

All relevant contents of the operations related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the present embodiment, the terminal device 90 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, the terminal device 90 may take the form shown in fig. 2, as will be appreciated by those skilled in the art.

For example, the processor 201 in fig. 2 may cause the terminal device 90 to execute the PHR trigger method in the above method embodiment by calling a computer stored in the memory 203 to execute the instructions.

Illustratively, the functions/implementation procedures of the determining module 901, the sending module 902, the triggering module 903 and the receiving module 904 in fig. 11 may be implemented by the processor 201 in fig. 2 calling a computer executing instruction stored in the memory 203. Alternatively, the functions/implementation procedures of the determining module 901 and the triggering module 903 in fig. 11 may be implemented by the processor 201 in fig. 2 calling a computer executing instruction stored in the memory 203, and the functions/implementation procedures of the sending module 902 and the receiving module 904 in fig. 11 may be implemented by the communication interface 204 in fig. 2.

Since the terminal device 90 provided in this embodiment can execute the PHR triggering method, the technical effects obtained by the terminal device can refer to the method embodiments, and are not described herein again.

It should be noted that the terminal device provided in the embodiment of the present application may be applied to multiple fields, for example: the intelligent automobile field, the digital automobile field, the unmanned automobile field, the internet of vehicles field, the automatic automobile field, the pure electric vehicle field, the hybrid electric vehicle field, the extended range electric vehicle field, the plug-in hybrid electric vehicle field, the new energy automobile field and the like.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. 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 on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the 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.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or operations, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A Power Headroom Report (PHR) triggering method, the method comprising:

the terminal equipment determines PHR triggering;

the terminal equipment sends the PHR to network equipment;

when any one of the following conditions is met, the PHR triggers:

establishing side link connection; alternatively, the first and second electrodes may be,

releasing the connection of the side link; alternatively, the first and second electrodes may be,

activating a side link of the terminal equipment; alternatively, the first and second electrodes may be,

activating a side link carrier of the terminal equipment; alternatively, the first and second electrodes may be,

the terminal equipment starts to have side link resources for transmitting data; alternatively, the first and second electrodes may be,

the terminal equipment starts edge link transmission; alternatively, the first and second electrodes may be,

when the first timer is overtime, the terminal equipment has side link resources for transmitting data, and for at least one activated carrier of the terminal equipment, the change value of the side link path loss is greater than or equal to a first parameter value; alternatively, the first and second electrodes may be,

the terminal equipment performs multicast communication with other terminal equipment and meets a first condition; alternatively, the first and second electrodes may be,

the resource acquisition mode is converted; alternatively, the first and second electrodes may be,

the change value of the transmission resource quantity is larger than or equal to the second parameter value;

alternatively, the first and second electrodes may be,

the terminal equipment has side link carriers with the power back-off change value larger than or equal to a third parameter value;

the side link is a direct-connection wireless communication link between the terminal equipment and other terminal equipment;

the first condition includes:

for M edge links of the terminal equipment for multicast communication, the terminal equipment obtains edge link path loss change values of each edge link, and the edge link path loss change values are M in total;

the number of the fourth parameter values which are greater than or equal to the number of the M side link path loss change values is greater than or equal to N; alternatively, the first and second electrodes may be,

the ratio of the number of the fifth parameter values which are greater than or equal to the M side link path loss change values to M is greater than or equal to R; alternatively, the first and second electrodes may be,

the average value of the M side link path loss change values is greater than or equal to a sixth parameter value; alternatively, the first and second electrodes may be,

a maximum value of the M side link path loss change values is greater than or equal to a seventh parameter value; alternatively, the first and second electrodes may be,

a variation value of a maximum value among the M edge link path losses is greater than or equal to an eighth parameter value, wherein the variation value of the maximum value is used for indicating a variation between two obtained maximum values;

wherein M is a positive integer, N is a non-negative number, R is greater than or equal to 0 and R is less than or equal to 1.

2. The method of claim 1, wherein the side-link connection establishment comprises: the side link connection establishment starts or the side link connection establishment ends.

3. The method of claim 1, wherein the resource acquisition mode is transformed, comprising:

converting the resource acquisition mode supporting the first mode into a resource acquisition mode supporting the second mode; alternatively, the first and second electrodes may be,

converting the resource acquisition mode supporting the first mode into the resource acquisition mode supporting the first mode and the second mode; alternatively, the first and second electrodes may be,

and converting the resource acquisition mode supporting the first mode and the second mode into the resource acquisition mode supporting the second mode.

4. The method of claim 3, wherein the first mode of resource acquisition comprises: the network device configures side link transmission resources for the terminal device, and the resource obtaining mode in the second mode includes: the terminal equipment selects side link transmission resources; or, the resource acquiring method in the second mode includes: the network device configures side link transmission resources for the terminal device, and the resource obtaining mode in the first mode includes: and the terminal equipment selects the side link transmission resource.

5. The method of claim 1, wherein the obtaining, by the end device, an edge link path loss variation value for each edge link comprises:

for each side link, determining the maximum value in the measured side link path loss change values of the carrier, and determining the maximum value as the side link path loss change value of the side link; alternatively, the first and second electrodes may be,

for each side link, determining the minimum value of the side link path loss change values of the carrier measured by the side link, and determining the minimum value as the side link path loss change value of the side link; alternatively, the first and second electrodes may be,

and for each side link, determining the average value of the side link path loss change values of the carrier waves measured by the side link, and determining the average value as the side link path loss change value of the side link.

6. The method of claim 5, wherein the side link path loss variation value of the carrier comprises:

a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR transmission; alternatively, the first and second electrodes may be,

a change value between the path loss measured at the current side link path loss reference and the path loss measured at the side link path loss reference when the last power headroom PH calculation or PHR packing is performed; alternatively, the first and second electrodes may be,

a change value between the path loss measured at the current edge link path loss reference and the path loss measured at the edge link path loss reference at the last PHR trigger.

7. The method of claim 1, wherein the power backoff change value comprises:

a change value between a currently required power backoff and a power backoff required when the terminal device transmits the PHR last time; alternatively, the first and second electrodes may be,

a change value between the currently required power backoff and the power backoff required when the terminal device calculates the PH or the packing PHR last time; alternatively, the first and second electrodes may be,

a change value between a currently required power backoff and a power backoff required the last time the terminal device triggers the PHR.

8. The method of claim 1 or 7, wherein the power backoff change value is greater than or equal to the third parameter value, comprising: the duration of the power backoff change value being greater than or equal to the third parameter value is greater than or equal to a first preset time.

9. The method according to any of claims 1-8, wherein before the terminal device sends the PHR to the network device, the method further comprises:

the terminal equipment triggers a request, and the request is used for requesting uplink resources for the PHR.

10. The method according to claim 9, wherein the request is a Buffer Status Report (BSR) or wherein the request is a Scheduling Request (SR).

11. The method of claim 10, wherein when the request is the BSR, the method further comprises: the terminal equipment fails to request uplink resources for the PHR through the BSR, the terminal equipment triggers the SR, and the SR is used for requesting the uplink resources for the PHR.

12. The method according to claim 10 or 11, wherein the BSR includes any one of: padding BSR, regular BSR, or periodic BSR.

13. The method according to claim 10 or 11, characterized in that the method further comprises:

the terminal equipment receives SR configuration information from network equipment, wherein the SR configuration information is used for configuring the SR, and the SR is used for requesting uplink resources for the PHR; alternatively, the first and second electrodes may be,

the terminal equipment stores the SR configuration information.

14. The method of any of claims 1-13, wherein the PHR comprises power headroom information for an edge link of the terminal device.

15. The method according to any of claims 1-14, wherein before the terminal device sends the PHR to the network device, the method further comprises:

the terminal equipment determines first information, wherein the first information is used for indicating the terminal equipment to report the power headroom information of the side link.

16. The method of claim 15,

the terminal equipment determines the first information according to the indication information sent by the network equipment; alternatively, the first and second electrodes may be,

and the terminal equipment determines the first information according to the pre-stored indication information.

17. The method according to any of the claims 1 to 16, wherein said first timer is a prohibit timer PHR-ProhibitTimer reported by an uplink PHR; or the first timer is a prohibition timer PHR-ProhibitTimer reported by the side link PHR;

wherein the uplink is a wireless communication link from the terminal device to a network device.

18. A terminal device, characterized in that the terminal device comprises:

a determination module for determining a PHR trigger;

a sending module, configured to send the PHR to a network device;

when any one of the following conditions is met, the PHR triggers:

alternatively, the first and second electrodes may be,

the first condition includes:

19. A communication apparatus, characterized in that the communication apparatus comprises:

at least one processor, a memory;

the memory stores program instructions that are executed in the at least one processor to implement the functionality of the terminal device or the network device in the method of any of claims 1-17.

20. A system-on-chip (SOC) for use in a terminal device or a network device, the SOC comprising:

at least one processor in which program instructions are executed to implement the functions of the terminal device or the network device in the method of any one of claims 1-17.

21. A computer-readable storage medium, in which program instructions are stored, which program instructions, when executed, implement the functions of the terminal device or the network device in the method according to any one of claims 1 to 17.

22. A communication system, characterized in that the communication system comprises any one or any of the following:

the terminal device of claim 18, or the communication apparatus of claim 19, or the system-on-chip of claim 20, or the computer storage medium of claim 21.