Method and device for triggering power headroom report and terminal equipment

Abstract

The embodiment of the invention provides a method and device for triggering power headroom reporting and terminal equipment, and relates to the technical field of communication. The method comprises the following steps: the terminal equipment receives at least one first path loss offset value and at least one second path loss offset value; the at least one first path loss offset value and the at least one second path loss offset value are from the network device. And the terminal equipment reports the power headroom based on the at least one first path loss offset value and the at least one second path loss offset value. In the present application, a terminal device obtains at least one first path loss offset value and at least one second path loss offset value sent by a network device, and determines whether to report the power headroom based on the variable quantity between the two path loss offset values, thereby solving the problem that the actual uplink path loss is inconsistent with the measured downlink path loss in a UL only TRP scene, and improving the accuracy of the uplink path loss report. And the existing triggering mechanism is not applicable.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to a method, apparatus, and terminal device for triggering power headroom reporting. Background Art

[0002] In long term evolution (LTE) and new radio (NR) systems, the transmit power of a user equipment (UE) cannot exceed the maximum output power. Therefore, generally, the UE notifies the network device of the difference between the maximum output power of the UE and the transmit power of the current physical uplink shared channel (PUSCH) or sounding reference signal (SRS) through power headroom reporting (PHR). The network device performs uplink scheduling and link adaptation based on this difference, and further determines whether to perform power control, for example, reducing the transmit power or increasing the transmit power, so that the current transmit power of the UE is within an appropriate range.

[0003] Currently, the conditions for triggering the UE to perform PHR mainly include: the expiration of the phr-Prohibit Timer and the path loss change being greater than a preset threshold since the last PHR, the expiration of the phr-Periodic Timer, or a change in the PHR configuration, or the activation of a secondary cell (Scell), or the activation of a secondary cell group (SCG), or the addition of a primary secondary cell (PSCell), or the power back-off caused by power control being greater than a preset threshold, etc. For the case of determining whether to trigger power headroom reporting based on the status of the phr-Prohibit Timer and the path loss change since the last PHR, in a traditional base station, the uplink and downlink path losses of the UE are equivalent. Therefore, the UE can obtain the uplink path loss by measuring the downlink reference signal, and then combine it with whether the phr-Prohibit Timer has expired to determine whether to perform power headroom reporting. In order to improve the uplink throughput of the network, a base station only for uplink reception (Uplink only TRP) is set. Although the uplink throughput is improved, it will cause the downlink path loss measured by the UE and the uplink path loss to be non-equivalent, and it is impossible to trigger the reporting of power headroom by measuring the downlink path loss. Summary of the Invention

[0004] The present application provides a method, an apparatus, and a terminal device for triggering power headroom reporting. The terminal device determines whether to perform power headroom reporting based on the measured downlink path loss and the path loss offset value notified by the network device.

[0005] The technical solution is as follows:

[0006] In a first aspect, an embodiment of the present application provides a method for triggering power headroom reporting, including: The terminal device receives at least one first path loss offset value and at least one second path loss offset value. The at least one first path loss offset value and the at least one second path loss offset value are from the network device. The terminal device performs power headroom reporting based on the at least one first path loss offset value and the at least one second path loss offset value.

[0007] In the present application, the terminal device obtains at least one first path loss offset value and at least one second path loss offset value sent by the network device, and performs power headroom reporting through comparison between the two path loss offset values, so as to implement power headroom reporting in the ULonly TRP scenario.

[0008] In a possible implementation manner, when the terminal device receives a second path loss offset value after receiving a first path loss offset value, and performs power headroom reporting based on the at least one first path loss offset value and the at least one second path loss offset value, the method provided by the embodiment of the present application includes: The terminal device performs power headroom reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold.

[0009] In a possible implementation manner, the method provided by the embodiment of the present application further includes: The terminal device performs power headroom reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, and the first path loss offset value has been used for power headroom reporting. Wherein, the first path loss offset value has been used for power headroom reporting may be used for the most recent power headroom reporting or the previous power headroom reporting, which is not limited in the embodiment of the present application.

[0010] In a possible implementation manner, when the terminal device receives at least one second path loss offset value after receiving a first path loss offset value, and performs power headroom reporting based on the at least one first path loss offset value and the at least one second path loss offset value, the method provided by the embodiment of the present application includes: The terminal device determines a third path loss offset value based on the first path loss offset value and the at least one second path loss offset value. The terminal device performs power headroom reporting when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

[0011] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a first preset threshold, and the first path loss offset value has been used for power headroom reporting, the terminal device performs power headroom reporting. Among them, the situation where the first path loss offset value has been used for power headroom reporting may be that the first path loss offset value has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0012] In a possible implementation, when the terminal device receives multiple second path loss offset values after receiving multiple first path loss offset values, based on at least one first path loss offset value and at least one second path loss offset value, the method provided by the embodiments of the present application for performing power headroom reporting includes: the terminal device determines a fourth path loss offset value based on the multiple first path loss offset values. The terminal device determines a fifth path loss offset value based on the multiple second path loss offset values. The terminal device performs power headroom reporting when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold.

[0013] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a first preset threshold, and the first path loss offset value has been used for power headroom reporting, the terminal device performs power headroom reporting. Among them, the situation where the first path loss offset value has been used for power headroom reporting may be that it has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0014] In a possible implementation, the method provided by the embodiments of the present application includes: the terminal device performs power headroom reporting based on at least one first path loss offset value, at least one second path loss offset value, and the status of a counter.

[0015] In a possible implementation, the method provided by the embodiments of the present application includes: when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, or the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold, or the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold, and the timer is in an overtime state, the terminal device performs power headroom reporting. This enables the terminal device to trigger power headroom reporting by combining the path loss offset value and the timer status.

[0016] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for power headroom reporting, the terminal device performs the power headroom reporting.

[0017] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for power headroom reporting, the terminal device performs the power headroom reporting.

[0018] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for power headroom reporting, the terminal device performs the power headroom reporting.

[0019] Wherein, the situation that the first path loss offset value has been used for power headroom reporting may be that the first path loss offset value has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0020] Wherein, the timer being in an overtime state can be understood as the timer timing out or having timed out, or the timer expiring, which is not limited in the embodiments of the present application.

[0021] In a possible implementation, the terminal device performs power headroom reporting based on at least one first path loss offset value and at least one second path loss offset value. The method provided by the embodiments of the present application includes: the terminal device determines a first uplink path loss and a second uplink path loss. The first uplink path loss is determined by a first downlink path loss and at least one first path loss offset value, and the second uplink path loss is determined by a second downlink path loss and at least one second path loss offset value, or is determined by at least one first path loss offset value, a second downlink path loss, and at least one second path loss offset value. The terminal device performs power headroom reporting according to the first uplink path loss and the second uplink path loss.

[0022] In the present application, the terminal device directly performs power headroom reporting after respectively obtaining at least one first path loss offset value and at least one second path loss offset value sent by the network device, and according to the magnitude of the change amount between the at least one first path loss offset value and the at least one second path loss offset value. When the change amount is greater than or equal to a preset threshold, the terminal device triggers power headroom reporting.

[0023] In a possible implementation, the terminal device reports the power headroom based on the first uplink path loss and the second uplink path loss, including: when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold, the terminal device reports the power headroom.

[0024] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold, and the first uplink path loss has been used for power headroom reporting, the terminal device reports the power headroom. Among them, the situation where the first uplink path loss has been used for power headroom reporting can be that the first uplink path loss has been used for the most recent power headroom reporting or the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0025] In a possible implementation, at least one first path loss offset value is received in a first time period, and at least one second path loss offset value is received in a second time period, and the first time period is before the second time period.

[0026] In a possible implementation, the first downlink path loss is obtained at the last time before the first time period or within a first preset time. Or, the first downlink path loss is obtained at the most recent time after the first time period or within a second preset time.

[0027] In a possible implementation, the second downlink path loss is obtained at the last time before the second time period or within a first preset time. Or, the second downlink path loss is obtained at the most recent time after the second time period or within a second preset time.

[0028] In a possible implementation, when the terminal device does not receive at least one second path loss offset value from the network device after receiving at least one first path loss offset value, the second uplink path loss is determined by the first downlink path loss and at least one first path loss offset value.

[0029] As an example, after receiving at least one first path loss offset value from the network device, the terminal device may not receive at least one second path loss offset value. For example, at a first moment, the network device sends at least one first path loss offset value to the terminal device. Correspondingly, the terminal device receives at least one first path loss offset value from the network device at the first moment; at a second moment, the network device does not send at least one second path loss offset value to the terminal device in time. Correspondingly, the terminal device does not receive at least one second path loss offset value at the second moment.

[0030] In a possible implementation, when the terminal device does not receive at least one second path loss offset value from the network device after receiving at least one first path loss offset value, the terminal device does not report the power headroom.

[0031] In a possible implementation, the method provided by the embodiments of the present application further includes: the terminal device reports a power headroom according to the change amount between the first uplink path loss and the second uplink path loss, and the status of the timer.

[0032] In a possible implementation, the method provided by the embodiments of the present application includes: the terminal device reports a power headroom when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold and the timer is in an overtime state.

[0033] In a possible implementation, the method provided by the embodiments of the present application further includes: the terminal device reports a power headroom when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold, the timer is in an overtime state, and the first uplink path loss has been used for power headroom reporting. Herein, the situation where the first uplink path loss has been used for power headroom reporting may be that the first uplink path loss has been used for the most recent power headroom reporting or the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0034] In a possible implementation, when the terminal device does not receive at least one second path loss offset value from the network device after receiving at least one first path loss offset value, the method provided by the embodiments of the present application includes: the terminal device reports a power headroom according to the change amount between the first downlink path loss and the second downlink path loss, and the status of the timer.

[0035] As an example, at a first moment, the terminal device receives at least one first path loss offset value from the network device and measures the first downlink path loss. At a second moment, the terminal device measures the second downlink path loss but does not receive at least one second path loss offset value from the network device. Then, the terminal device determines whether to report a power headroom according to the first downlink path loss, the second downlink path loss, and the status of the timer.

[0036] In a possible implementation, the method provided by the embodiments of the present application includes: the terminal device reports a power headroom when the change amount between the first downlink path loss and the second downlink path loss is greater than or equal to a fifth preset threshold and the timer is in an overtime state.

[0037] In a possible implementation, the method provided by the embodiments of the present application further includes: when the change amount between the first downlink path loss and the second downlink path loss is greater than or equal to a fifth preset threshold, the timer is in an overtime state, and the first downlink path loss has been used for power headroom reporting, the terminal device performs power headroom reporting. Among them, the situation where the first downlink path loss has been used for power headroom reporting may be that the first downlink path loss has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0038] In a possible implementation, the first path loss offset value is the difference or offset coefficient between the first downlink path loss and the first uplink path loss, and the second path loss offset value is the difference or offset coefficient between the second downlink path loss and the second uplink path loss.

[0039] In a second aspect, the embodiments of the present application provide a method for triggering power headroom reporting, including: the network device sends at least one first path loss offset value and at least one second path loss offset value to the terminal device, and the at least one first path loss offset value and the at least one second path loss offset value are used to trigger power headroom reporting.

[0040] In a possible implementation, the method provided by the embodiments of the present application includes: the network device sends a first path loss offset value to the terminal device and then sends a second path loss offset value. When the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, power headroom reporting is triggered.

[0041] In a possible implementation, the method provided by the embodiments of the present application includes: the network device sends a first path loss offset value to the terminal device and then receives at least one second path loss offset value. The first path loss offset value and the at least one second path loss offset value are used to determine a third path loss offset value. When the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold, power headroom reporting is triggered.

[0042] In a possible implementation, the method provided by the embodiments of the present application includes: the network device sends at least one first path loss offset value to the terminal device and then sends at least one second path loss offset value. The at least one first path loss offset value is used to determine a fourth path loss offset value, and the at least one second path loss offset value is used to determine a fifth path loss offset value. When the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold, power headroom reporting is triggered.

[0043] In a third aspect, an embodiment of the present application provides a device for triggering power margin reporting, including: a receiving unit and a reporting unit. Among them, the receiving unit is used to receive at least one first path loss offset value and at least one second path loss offset value, and the at least one first path loss offset value and the at least one second path loss offset value are from a network device. Among them, the reporting unit is used to perform power margin reporting based on the at least one first path loss offset value and the at least one second path loss offset value.

[0044] In a possible implementation manner, in the case of receiving a second path loss offset value after receiving a first path loss offset value, the reporting unit is used to perform power margin reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold.

[0045] In a possible implementation manner, in the case of receiving at least one second path loss offset value after receiving a first path loss offset value, the reporting unit is used to determine a third path loss offset value based on the first path loss offset value and the at least one second path loss offset value. The reporting unit is further used to perform power margin reporting when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

[0046] In a possible implementation manner, in the case of receiving multiple second path loss offset values after receiving multiple first path loss offset values, the reporting unit is used to determine a fourth path loss offset value based on the multiple first path loss offset values, and is used to determine a fifth path loss offset value based on the multiple second path loss offset values. The reporting unit is further used to perform power margin reporting when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold.

[0047] In a possible implementation manner, the reporting unit is used to perform power margin reporting based on the at least one first path loss offset value, the at least one second path loss offset value, and the status of a counter.

[0048] In a possible implementation manner, the reporting unit is used to perform power margin reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, or the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to the second preset threshold, or the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to the third preset threshold, and the timer is in an overtime state.

[0049] In a possible implementation, the reporting unit is further configured to determine a first uplink path loss and a second uplink path loss. The first uplink path loss is determined by a first downlink path loss and a first path loss offset value, and the second uplink path loss is determined by a second downlink path loss and a second path loss offset value, or is determined by the first path loss offset value, the second downlink path loss, and the second path loss offset value. The reporting unit is further configured to perform a power headroom report according to the first uplink path loss and the second uplink path loss.

[0050] In a possible implementation, the reporting unit is configured to perform a power headroom report when a change amount between the first uplink path loss and the second uplink path loss is greater than a fourth preset threshold.

[0051] In a possible implementation, the first path loss offset value is received in a first time period, the second path loss offset value is received in a second time period, and the first time period is before the second time period.

[0052] In a possible implementation, when the second path loss offset value from the network device is not received after the first path loss offset value is received, the reporting unit does not perform a power headroom report.

[0053] In a possible implementation, the reporting unit is further configured to perform a power headroom report according to a change amount between the first uplink path loss and the second uplink path loss and a status of a timer.

[0054] In a possible implementation, the reporting unit is configured to perform a power headroom report when a change amount between the first uplink path loss and the second uplink path loss is greater than a first preset threshold and the timer is in an overtime state.

[0055] In a possible implementation, when at least one second path loss offset value from the network device is not received after at least one first path loss offset value is received, the reporting unit is configured to perform a power headroom report according to a change amount between the first downlink path loss and the second downlink path loss and a status of a timer.

[0056] In a possible implementation, the reporting unit is configured to perform a power headroom report when a change amount between the first downlink path loss and the second downlink path loss is greater than a second preset threshold and the timer is in an overtime state.

[0057] Fourthly, an embodiment of the present application provides a device for triggering a power headroom report, including: a sending unit configured to send at least one first path loss offset value and at least one second path loss offset value.

[0058] In a possible implementation, the sending unit sends a first path loss offset value and then sends a second path loss offset value. When the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, power headroom reporting is triggered.

[0059] In a possible implementation, the sending unit sends a first path loss offset value and then receives at least one second path loss offset value. The first path loss offset value and the at least one second path loss offset value are used to determine a third path loss offset value. When the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold, power headroom reporting is triggered.

[0060] In a possible implementation, the sending unit sends at least one first path loss offset value and then sends at least one second path loss offset value. The at least one first path loss offset value is used to determine a fourth path loss offset value, and the at least one second path loss offset value is used to determine a fifth path loss offset value. When the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold, power headroom reporting is triggered.

[0061] In a fifth aspect, an embodiment of the present application provides a communication device. The communication device includes a memory and a processor. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. And the execution of the instructions stored in the memory enables the processor to execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect, or execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect.

[0062] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium. A computer program or instruction is stored in the computer-readable storage medium. When the computer program or instruction runs on a computer, the computer is enabled to execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect, or execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect.

[0063] In a seventh aspect, an embodiment of the present application provides a computer program product including instructions. When the instructions run on a computer, the computer is enabled to execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect, or execute the method for triggering power headroom reporting described in the first aspect or various possible implementation manners of the first aspect.

[0064] In an eighth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a computer program or instruction to implement the method for triggering power margin reporting described in the first aspect or various possible implementation manners of the first aspect, or execute the method for triggering power margin reporting described in the first aspect or various possible implementation manners of the first aspect. The communication interface is configured to communicate with other modules outside the chip.

[0065] Specifically, the chip provided in the embodiment of the present application further includes a memory for storing a computer program or instruction.

[0066] Any of the above-provided devices, computer storage media, computer program products, chips, or communication systems is used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding solutions in the corresponding methods provided above, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 FIG. is a schematic diagram of a communication system provided by an embodiment of the present application;

[0068] Figure 2 FIG. is a schematic diagram of a method for triggering power margin reporting provided by an embodiment of the present application;

[0069] Figure 3 FIG. is a schematic diagram of a method for triggering power margin reporting provided by an embodiment of the present application;

[0070] Figure 4 FIG. is a schematic diagram of another method for triggering power margin reporting provided by an embodiment of the present application;

[0071] Figure 5 FIG. is a schematic diagram of the structure of a device for triggering power margin reporting provided by an embodiment of the present application;

[0072] Figure 6 FIG. is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the present application;

[0073] Figure 7 FIG. is a schematic block diagram of a terminal device according to an embodiment of the present application;

[0074] Figure 8 FIG. is a schematic block diagram of a network device according to an embodiment of the present application;

[0075] Figure 9 FIG. is a schematic diagram of the structure of a chip provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0076] In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish identical or similar items with basically the same functions and effects. For example, the first symbol and the second symbol are only used to distinguish different symbols, and do not limit their sequence. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and the terms "first" and "second" do not necessarily mean different.

[0077] It should be noted that in the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0078] In the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c may represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, c may be single or multiple.

[0079] Explanation of technical terms related to the embodiments of the present application.

[0080] 1. Power headroom refers to the remaining power of a terminal device after completing the current transmission. The network device can configure a maximum allowable transmit power for the terminal device. Then, the power headroom can be understood as the remaining power after subtracting the actual transmit power from the maximum allowable transmit power, or the remaining power after subtracting the reference transmit power from the maximum allowable transmit power. For example, when the terminal device transmits a physical uplink shared channel (PUSCH) or a sounding reference signal (SRS), the transmit power is P1, and the maximum allowable transmit power configured by the network device for the terminal device is P0. Then, the power headroom can be understood as P0 - P1.

[0081] 2. Maximum transmission power refers to the upper limit of the transmission power that the terminal device can adopt within the frequency band. The maximum transmission power of the terminal device is determined by the capabilities of the terminal device and the frequency band.

[0082] 3. Path loss refers to the loss when the signal propagates through space.

[0083] Figure 1 It is a schematic diagram of the architecture of the communication system to which the embodiments of the present application are applied. As Figure 1 shown, the communication system includes a radio access network 100 and a core network 200. Among them, the radio access network 100 may include at least one network device (such as Figure 1 110a and / or 110b in Figure 1 ), and may also include at least one terminal device (such as Figure 1 at least one of 120a - 120c in

[0084] ). The terminal device is connected to the network device wirelessly, and the network device is connected to the core network wirelessly or wired. The terminal devices can be connected to each other, and the network devices can be connected to each other, either wired or wirelessly. This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices.

[0084] A network device is a network-side device with wireless transceiver capabilities. The network device can be a device in a radio access network (RAN) that provides wireless communication functions for terminal devices, referred to as a RAN device. For example, the network device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it can also be a module or unit that completes some functions of the base station. For example, it can be a central unit (CU) or a distributed unit (DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete some or all of the functions of the physical layer. For specific descriptions of the above protocol layers, reference can be made to the relevant technical specifications of the 3rd generation partnership project (3GPP). The network device can be a macro base station, a micro base station or an indoor station, or a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0085] A terminal device is a user-side device with wireless transceiver capabilities. A terminal device can also be referred to as a user equipment (UE), mobile station, mobile terminal, etc. Terminal devices can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. Embodiments of this application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0086] The network device and the terminal device can be fixed in position or movable. The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airplanes, balloons, and artificial satellites in the air. Embodiments of this application do not limit the application scenarios of the network device and the terminal device.

[0087] The roles of the network device and the terminal device can be relative. For example, Figure 1 the terminal device 120a in [reference] can be configured as a mobile network device. For those terminal devices that access the radio access network 100 through the terminal device 120a, the terminal device is a network device; but for Figure 1 the network device 110a in [reference], the terminal device 120a is a terminal device, that is, the network device 110a and the terminal device 120a communicate through the radio air interface protocol. Of course, the network device 110a and the terminal device 120a can also communicate through the interface protocol between network devices. At this time, relative to the network device 110a, the terminal device 120a is also a network device. Therefore, both the network device and the terminal device can be uniformly referred to as communication devices. Figure 1 the network devices 110a and 110b in [reference] can be referred to as communication devices with network device functions. Figure 1 the 120a - 120c in [reference] can be referred to as communication devices with terminal device functions.

[0088] Communication can be carried out between a network device and a terminal device, between network devices, and between terminal devices through authorized spectrum, through unlicensed spectrum, or through both authorized and unlicensed spectrum simultaneously; communication can be carried out through spectrum below 6 gigahertz (GHz), through spectrum above 6 GHz, or through both spectrum below 6 GHz and spectrum above 6 GHz simultaneously. Embodiments of this application do not limit the spectrum resources used for wireless communication.

[0089] In embodiments of this application, the functions of a network device can also be performed by a module (such as a chip) in the network device, or by a control subsystem that includes the functions of the network device. Here, the control subsystem that includes the functions of the network device can be a control center in application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of a terminal device can also be performed by a module (such as a chip or a modem) in the terminal device, or by a device that includes the functions of the terminal device.

[0090] Currently, when a terminal device reaches the trigger condition for power headroom reporting (PHR), the terminal device can perform PHR to the network device, and the reported content is the difference between the maximum allowable transmit power and the actual transmit power. Hereinafter, the PHR mechanism for the physical uplink shared channel (PUSCH) of the terminal device will be used as an example for illustration.

[0091] If the terminal device uses the parameter set configuration with index j and the PUSCH power control adjustment state with index l to transmit uplink data PUSCH on the uplink part bandwidth (BWP) b of carrier f in cell c, the transmit power of PUSCH at transmission opportunity i is:

[0092]

[0093] Among them, the transmit power P PUSCH,b,f,c (i,j,q d ,l) is in decibels (dBm).

[0094] Among them, P CMAX,f,c (i) is the maximum transmit power configured for the terminal device, P O_PUSCH,b,f,c (j) is the expected receive power configured by the network device for the terminal device, μ is the subcarrier spacing, is the bandwidth of PUSCH, α b,f,c (j) is the path loss factor, PL b,f，c (qd ) Path loss of the downlink reference signal q measured by the terminal device d , Δ TF,b,f,c (i) Bias related to the modulation and coding scheme (MCS), f b,f,c (i, l) Closed-loop power control adjustment amount

[0095] When the terminal device determines a Type 1 PHR based on an actual PUSCH transmission on the activated serving cell, then for the PUSCH transmission opportunity i on the uplink BWPb of carrier f in cell c, the terminal device calculates the Type 1 PHR:

[0096]

[0097] When the terminal device determines a Type 1 PHR based on a reference PUSCH transmission on the activated serving cell, then for the PUSCH transmission opportunity i on the uplink BWPb of carrier f in cell c, the terminal device calculates the Type 1 PHR:

[0098]

[0099] If the terminal device transmits uplink data SRS using the power control adjustment state of the sounding reference signal (SRS) with index l on the uplink BWPb of carrier f in cell c, the transmit power of the SRS at the transmission opportunity i is:

[0100]

[0101] Where P CMAX,f,c (i) Maximum transmit power configured for the UE, P O_SRS,b,f,c (q s ) Desired receive power configured by the network device for the terminal device, μ is the subcarrier spacing, is the bandwidth of the SRS, α SRS,b,f,c (q s ) Path loss factor, PL b，f，c (q s ) Path loss of the downlink reference signal q measured by the terminal device s , in dB, h b，f，c (i, l) Closed-loop power control adjustment amount

[0102] When the terminal device determines a Type 3 PHR based on an actual SRS transmission on the activated serving cell, then for the SRS transmission opportunity i on the uplink BWPb of carrier f in cell c, the terminal device calculates the Type 3 PHR:

[0103] PH type3,b,f,c (i,q s ) = P CMAX,f,c (i) - {P O_SRS,b,f,c (q s ) + 10log 10 (2 μ ·M SRS,b,f,c (i)) + α SRS,b,f,c (q s )·PL b,f,c (q d ) + h b,f,c (i)}

[0104] When the terminal device determines a Type 3 PHR based on a reference SRS transmission on an activated serving cell, then for the SRS transmission occasion i on the uplink BWP b of carrier f in cell c, the terminal device calculates the Type 3 PHR:

[0105]

[0106] In the prior art, before the terminal device performs a PHR, certain conditions need to be met to trigger the PHR.

[0107] As an example, when the medium access control (MAC) entity has uplink resources for new transmissions, and the timer (phr - Prohibit Timer) times out or has timed out, if the path loss of at least one activated cell in any MAC entity changes by more than the threshold (phr - Tx - Power Factor Change) compared to the path loss of this cell at the time of the last PHR transmission in this MAC, then a PHR is performed. Among them, the threshold (phr - Tx - Power Factor Change) parameter is used as a path loss reference.

[0108] Or, when the timer (phr - Periodic Timer) times out, then a PHR is performed.

[0109] Or, when the upper layer configures or re - configures the PHR function and the PHR function is not disabled, then a PHR is performed.

[0110] Or, when the activation of a secondary cell (SCell) of the uplink is configured in any MAC entity, or the activation of a secondary cell group (SCG) is configured, then a PHR is performed.

[0111] Or, when a new primary secondary cell (PSCell) is added, then a PHR is performed.

[0112] As another example, when the MAC entity has uplink resources for new transmissions and the timer (phr-ProhibitTimer) has timed out or has already timed out, if any of the serving cells with an active uplink configuration on any MAC has uplink resources for transmission or has physical uplink control channel (PUCCH) transmission, and the power back-off of this cell due to power management is greater than the threshold (phr-Tx-Power FactorChange) compared to the power back-off during PHR transmission when the MAC entity had PUSCH or PUCCH transmission last time, then a PHR is performed.

[0113] Alternatively, when the active BWP of the SCell of any MAC entity configured with an uplink switches from a dormant BWP to a non-dormant downlink (DL) BWP, then a PHR is performed.

[0114] Alternatively, mpe-Reporting-FR2 is configured and the timer (mpe-Prohibit Timer) is not running, and the power management-maximum power reduction (P-MPR) for meeting the maximum permissible emission (MPE) requirement in at least one active Frequency range 2 (FR2) serving cell since the last PHR transmission is equal to or greater than the mpe-Threshold, then a PHR is performed.

[0115] Alternatively, if the change in the measured P-MPR for meeting the FR2 MPE requirement since the last PHR transmission is greater than the threshold (phr-Tx-Power Factor Change), then a PHR is performed.

[0116] Currently, for the uplink power control of the terminal device, the path loss between the terminal device and the network device needs to be obtained. For traditional network devices (such as base stations), the uplink path loss and the downlink path loss of the terminal device are equivalent. Therefore, for the terminal device to perform PHR, the uplink path loss can be obtained by measuring the downlink reference signal and combining it with the downlink reference signal transmission power notified by the base station, and then determining whether to perform PHR by combining whether the change between the uplink path loss at the last PHR and the current uplink path loss exceeds the threshold and combining the timer (phr-Prohibit Timer).

[0117] To improve the uplink capacity of the network, a new type of base station, called the Uplink only transmission-reception point (Uplink only TRP), is proposed. It can be used as an additional supplement to the traditional base station to achieve the purpose of improving uplink coverage. In a scenario including the Uplink only TRP, the terminal device can send an uplink signal to the Uplink only TRP and receive the downlink signal from the traditional base station. For example, referring to Figure 1 In the shown communication system, network device 110a serves as the traditional base station, and network device 110b serves as the Uplink only TRP. The terminal device 120a sends an uplink signal to network device 110b and receives the downlink signal from network device 110a. However, due to the different physical locations of network device 110a and network device 110b, the downlink path loss measured by the terminal device 120a is not equivalent to the actual uplink path loss.

[0118] Regarding the problem that the downlink path loss measured by the terminal device is not equivalent to the actual uplink path loss, a solution is that the network device sends the path loss offset values of the uplink path loss and the downlink path loss to the terminal device. The terminal device determines the uplink path loss for uplink power control based on the path loss offset value and the measured downlink path loss. For example, the path loss offset value is denoted as Δ, and the downlink path loss is denoted as PL DL , then the uplink path loss PL UL is determined by Δ and PL DL and can be the sum of Δ and PL DL , that is, PL UL =PL DL +Δ, or it can be the difference between Δ and PL DL , that is, PL UL =PL DL -Δ; it can also be the product of Δ and PL DL , that is, PL UL =Δ·PL DL . It can be understood that the specific form of the offset value is not limited in the embodiments of this application.

[0119] Because the downlink path loss measured by the terminal device 120a is not equivalent to the actual uplink path loss, it will affect the power headroom reporting. For example, referring to Figure 1 In the shown communication system, the threshold (phr-Tx-Power Factor Change) indicated by network device 110a to terminal device 120a is 6 dB, and the counter (phr-Prohibit Timer) indicated by network device 110a to terminal device 120a is sf100. At time t0, the downlink path loss measured by terminal device 120a is The path loss offset value indicated by the network device 110a to the terminal device 120a The terminal device 120a is based on and performed a power headroom report; at time t1 (the time difference between time t0 and time t1 is greater than 100 subframes), when the terminal device 120a moves away from the network device 110a and moves towards the network device 110b, the downlink path loss measured by the terminal device 120a at this time increases to 85 dB, while the actual uplink path loss decreases to However, the network device 110a does not indicate a new path loss offset value to the terminal device 120a. At this time, although the actual uplink path loss changes by 10 dB, which is greater than the threshold of 6 dB, and the timer (phr-Prohibit Timer) has timed out, because the change in the downlink path loss measured by the terminal device 120a twice is 5 dB, which is less than the threshold of 6 dB, a power headroom report cannot be triggered. Therefore, the method of triggering a power headroom report through the downlink path loss in the prior art is not applicable to the application scenario including UL only TRP.

[0120] To solve the above problems, the present application proposes a method, device, and terminal device for triggering a power headroom report. The terminal device can determine whether to perform a power headroom report based on the measured downlink path loss, the path loss offset value notified by the network device, and the timer status.

[0121] In the embodiments of the present application, the specific structure of the execution subject of a method for triggering a power headroom report is not particularly limited in the embodiments of the present application. As long as a program recording the code of a method for triggering a power headroom report in the embodiments of the present application can be run to communicate according to a method for triggering a power headroom report in the embodiments of the present application. For example, the execution subject of a method for triggering a power headroom report provided in the embodiments of the present application can be a functional module in the terminal device that can call and execute the program, or a communication device applied to the terminal device, such as a chip. The execution subject of a method for triggering a power headroom report provided in the embodiments of the present application can be a functional module in the network device that can call and execute the program, or a communication device applied to the network device, such as a chip. The present application does not limit this.

[0122] A method for triggering a power headroom report provided in the embodiments of the present application is applied to a communication system including UL only TRP, such as Figure 2 As shown in the schematic flow chart of a method for triggering a power headroom report provided in the embodiments of the present application, the method includes:

[0123] Step S201: The terminal device receives at least one first path loss offset value and at least one second path loss offset value. Correspondingly, the network device sends at least one first path loss offset value and at least one second path loss offset value to the terminal device. Among them, the at least one first path loss offset value and the at least one second path loss offset value come from the network device.

[0124] Among them, the network device, as a traditional base station, is only used to send downlink signals to the terminal device.

[0125] Among them, the path loss offset value is the relationship coefficient between the downlink path loss and the uplink path loss. It can be understood that the uplink path loss can be obtained through the path loss offset value and the downlink path loss.

[0126] Specifically, the first path loss offset value is the relationship coefficient between the first downlink path loss and the first uplink path loss, and the second path loss offset value is the relationship coefficient between the second downlink path loss and the second uplink path loss.

[0127] Among them, the first path loss offset value and the second path loss offset value are received by the terminal device at two different moments or two different time periods.

[0128] As an example, the terminal device receives the first path loss offset value at the first moment and the second path loss offset value at the second moment; or, the terminal device receives the first path loss offset value at any moment within the first time period and the second path loss offset value at any moment within the second time period.

[0129] Step S202: The terminal device performs power headroom reporting based on at least one first path loss offset value and at least one second path loss offset value.

[0130] Among them, the content in the power headroom reporting includes the difference between the maximum allowable transmit power and the actual transmit power or the reference transmit power, and the network device performs power control according to the information in the power headroom reporting.

[0131] Among them, the terminal device directly performs power headroom reporting according to at least one first path loss offset value and at least one second path loss offset value, or can also determine the first uplink path loss and the second uplink path loss according to at least one first path loss offset value and at least one second path loss offset value, and then perform power headroom reporting according to the first uplink path loss and the second uplink path loss. The following describes the two cases separately:

[0132] Case 1: The terminal device directly performs power headroom reporting according to at least one first path loss offset value and at least one second path loss offset value directly.

[0133] In a possible embodiment of the present application, when the terminal device receives a second path loss offset value after receiving a first path loss offset value, the terminal device performs power headroom reporting based on at least one first path loss offset value and at least one second path loss offset value, including:

[0134] When the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, the terminal device performs power headroom reporting.

[0135] Wherein, the first preset threshold is determined by the network device.

[0136] As an example, the terminal device receives the first path loss offset value at the first moment and then receives the second path loss offset value at the second moment When the first path loss offset value and the second path loss offset value The change amount Δ T is greater than or equal to the first preset threshold, the terminal device performs power headroom reporting. Wherein, the change amount Δ T is the difference between the first path loss offset value and the second path loss offset value , and the absolute value is taken when comparing with the first preset threshold.

[0137] Illustratively, the terminal device receives the first path loss offset value at time t0 and receives the second path loss offset value at time t1 Then the change amount Δ T =-3dB - (-5dB) = 2dB, and the change amount of 2dB is compared with the first preset threshold. Or, the terminal device receives the first path loss offset value at time t0 and receives the second path loss offset value at time t1 Then the change amount Δ T =-3dB - (-1dB) = -2dB, and the absolute value of 2dB is taken for comparison with the first preset threshold.

[0138] Optionally, the method provided in the embodiment of the present application further includes: when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, and the first path loss offset value has been used for power headroom reporting, the terminal device performs power headroom reporting.

[0139] Wherein, the first path loss offset value has been used for power headroom reporting, which may be used for the most recent power headroom reporting or the previous power headroom reporting, and is not limited in the embodiment of the present application.

[0140] As an example, the terminal device has received the first path loss offset value before the first moment and used it for power headroom reporting, or, after the first moment and before the second moment, used it for power headroom reporting.

[0141] In a possible embodiment of the present application, when the terminal device receives at least one second path loss offset value after receiving a first path loss offset value, the terminal device performs power headroom reporting based on at least one first path loss offset value and at least one second path loss offset value, including:

[0142] The terminal device determines a third path loss offset value based on the first path loss offset value and at least one second path loss offset value.

[0143] The terminal device performs the power headroom reporting when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

[0144] Among them, the third path loss offset value is obtained by updating the second path loss offset value based on the first path loss offset value. For example, the first path loss offset value is indicated by the radio resource control (RRC) layer to have a relatively long corresponding update period, and the second path loss offset value is indicated by the downlink control information (DCI) to have a relatively short corresponding update period.

[0145] As an example, when the terminal device determines a third path loss offset value based on the first path loss offset value and a second path loss offset value, the third path loss offset value is the sum of the first path loss offset value and the second path loss offset value, or the third path loss offset value is the product of the first path loss offset value and the second path loss offset value.

[0146] As another example, when the terminal device determines a third path loss offset value based on the first path loss offset value and multiple second path loss offset values, the third path loss offset value is the sum of the first path loss offset value and the multiple second path loss offset values, or the third path loss offset value is the product of the first path loss offset value and the multiple second path loss offset values.

[0147] Among them, the second preset threshold is determined by the network device.

[0148] For example, the terminal device receives the first path loss offset value at the first moment and then receives the second path loss offset value at the second moment then determines the third path loss offset value or when the first path loss offset value and the third path loss offset value the change amount Δ TWhen it is greater than or equal to the second preset threshold, the terminal device reports the power headroom. Wherein, the change amount Δ T is the first path loss offset value and the third path loss offset value The difference takes the absolute value when comparing with the second preset threshold.

[0149] For example, the terminal device receives the first path loss offset value at the first moment and then receives multiple second path loss offset values at the second moment, for example, and Three second path loss offset values, then determine the third path loss offset value or When the first path loss offset value and the change amount Δ of the third path loss offset value is greater than or equal to the second preset threshold, the terminal device reports the power headroom. T When it is greater than or equal to the second preset threshold, the terminal device reports the power headroom.

[0150] Optionally, the method provided in the embodiment of the present application further includes: when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to the first preset threshold, and the first path loss offset value has been used for power headroom reporting, the terminal device performs power headroom reporting. Among them, the situation where the first path loss offset value has been used for power headroom reporting can be that the first path loss offset value has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiment of the present application.

[0151] In a possible embodiment of the present application, when the terminal device receives at least one second path loss offset value after receiving at least one first path loss offset value, the terminal device performs power headroom reporting based on at least one first path loss offset value and at least one second path loss offset value, including:

[0152] The terminal device determines a fourth path loss offset value based on multiple first path loss offset values.

[0153] The terminal device determines a fifth path loss offset value based on multiple second path loss offset values.

[0154] The terminal device performs power headroom reporting when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to the third preset threshold.

[0155] As an example, the fourth path loss offset value for the uplink transmission power control of the first time slot is obtained by accumulating multiple first path loss offset values, and the fifth path loss offset value for the uplink transmission power control of the second time slot is obtained by accumulating multiple second path loss offset values.

[0156] Among them, the third preset threshold is determined by the network device.

[0157] For example, at a first moment, the terminal device receives multiple first path loss offset values, such as and and then at a second moment, receives multiple second path loss offset values, such as and then determines a fourth path loss offset value or determines a fifth path loss offset value or When the fourth path loss offset value and the fifth path loss offset value the change amount Δ T is greater than or equal to a third preset threshold, the terminal device performs power headroom reporting. Wherein, the change amount Δ T is the difference between the fourth path loss offset value and the fifth path loss offset value and takes the absolute value when comparing with the third preset threshold.

[0158] Optionally, the method provided in the embodiments of the present application further includes: when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a first preset threshold, and the first path loss offset value has been used for power headroom reporting, the terminal device performs power headroom reporting. Wherein, the first path loss offset value has been used for power headroom reporting may be that the first path loss offset value has been used for the most recent power headroom reporting, or the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0159] In a possible embodiment of the present application, the method provided in the embodiments of the present application further includes: the terminal device performs power headroom reporting based on at least one first path loss offset value, at least one second path loss offset value, and the status of the counter.

[0160] As an example, in the case where the terminal device receives a second path loss offset value after receiving a first path loss offset value, when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, and the counter status is in an overtime state, the terminal device performs power headroom reporting.

[0161] Optionally, the method provided in the embodiments of the present application further includes: when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for power headroom reporting, the terminal device performs the power headroom reporting.

[0162] As an example, in the case where the terminal device receives a first path loss offset value and then receives a plurality of second path loss offset values, when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold and the counter state is in an overtime state, the terminal device performs a power headroom report.

[0163] Optionally, the method provided by the embodiments of the present application further includes: when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for a power headroom report, the terminal device performs the power headroom report.

[0164] As an example, in the case where the terminal device receives a plurality of first path loss offset values and then receives a plurality of second path loss offset values, when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold and the counter state is in an overtime state, the terminal device performs a power headroom report.

[0165] Optionally, the method provided by the embodiments of the present application further includes: when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for a power headroom report, the terminal device performs the power headroom report.

[0166] It can be understood that the situation where the first path loss offset value has been used for a power headroom report can be that the first path loss offset value has been used for the most recent power headroom report or the previous power headroom report, which is not limited in the embodiments of the present application.

[0167] It should be noted that the first preset threshold, the second preset threshold, and the third preset threshold may be the same or different, which is not limited in the embodiments of the present application.

[0168] It should be noted that the timer being in an overtime state can be that the timer has timed out or has already timed out, or the timer has expired, which is not limited in the embodiments of the present application.

[0169] Case 2: The terminal device determines a first uplink path loss and a second uplink path loss according to at least one first path loss offset value and at least one second path loss offset value, and then performs a power headroom report according to the first uplink path loss and the second uplink path loss.

[0170] In a possible embodiment of the present application, in step S202, the terminal device performs a power headroom report based on at least one first path loss offset value and at least one second path loss offset value, including, as Figure 3 shown:

[0171] Step S2021, the terminal device determines a first uplink path loss and a second uplink path loss.

[0172] Wherein, the first uplink path loss is determined by a first downlink path loss and at least one first path loss offset value, the second uplink path loss is determined by a second downlink path loss and at least one second path loss offset value, or is determined by at least one first path loss offset value, a second downlink path loss, and at least one second path loss offset value.

[0173] Wherein, the first downlink path loss and the second downlink path loss are obtained by measurement of the terminal device.

[0174] As an example, at a first moment, the terminal device measures and obtains a first downlink path loss, and at a second moment, the terminal device measures and obtains a second downlink path loss.

[0175] As an example, at a first moment, the first uplink path loss is the sum or product of the first downlink path loss and a first path loss offset value. At a second moment, the second uplink path loss is the sum or product of the second downlink path loss and at least one second path loss offset value, or the second uplink path loss is the sum or product of the second downlink path loss and a third path loss offset value, where the third path loss offset value is the sum or product of the first path loss offset value and at least one second path loss offset value.

[0176] In a possible embodiment of the present application, the first path loss offset value is the difference or offset coefficient between the first downlink path loss and the first uplink path loss, and the second path loss offset value is the difference or offset coefficient between the second downlink path loss and the second uplink path loss.

[0177] As an example, when the path loss offset value is the difference between the downlink path loss and the uplink path loss, the first uplink path loss is equal to the sum of the first downlink path loss and at least one first path loss offset value. Similarly, the second uplink path loss is equal to the sum of the second downlink path loss and at least one second path loss offset value.

[0178] For example, at a first moment t0, the terminal device measures and obtains a first downlink path loss receives a first path loss offset value from the network device then determines the first uplink path loss At a second moment t1, the terminal device measures and obtains a second downlink path loss receives a second path loss offset value from the network device then determines the second uplink path loss

[0179] As another example, when the path loss offset value is the offset coefficient between the downlink path loss and the uplink path loss, the first uplink path loss is equal to the product of the first downlink path loss and at least one first path loss offset value. Similarly, the second uplink path loss is equal to the product of the second downlink path loss and at least one second path loss offset value.

[0180] For example, at the first moment t0, the terminal device measures the first downlink path loss Receives the first path loss offset value from the network device Then determines the first uplink path loss At the second moment t1, the terminal device measures the second downlink path loss Receives the second path loss offset value from the network device Then determines the second uplink path loss

[0181] In a possible implementation manner of the present application, the first uplink path loss is determined by the first downlink path loss and at least one first path loss offset value, and the second uplink path loss is determined by the second downlink path loss and at least one second path loss offset value.

[0182] As an example, at the first moment, the terminal device receives the first path loss offset value and obtains the first downlink path loss. The terminal device determines the first uplink path loss according to the first path loss offset value and the first downlink path loss. At the second moment, the terminal device receives the second path loss offset value and measures the second downlink path loss. The terminal device determines the second uplink path loss according to the second path loss offset value and the second downlink path loss.

[0183] In another possible implementation manner of the present application, the first uplink path loss is determined by the first downlink path loss and at least one first path loss offset value, and the second uplink path loss is determined by at least one first path loss offset value, the second downlink path loss and at least one second path loss offset value.

[0184] As an example, at the first moment, the terminal device receives the first path loss offset value and measures the first downlink path loss. The terminal device determines the first uplink path loss according to the first path loss offset value and the first downlink path loss. At the second moment, the terminal device receives the second path loss offset value and measures the second downlink path loss, where the second path loss offset value is used to update the first path loss offset value. The terminal device determines the second uplink path loss according to the first path loss offset value, the second downlink path loss and the second path loss offset value.

[0185] For example, at the first moment t0, the terminal device measures the first downlink path loss Receives the first path loss offset value from the network device Then determines the first uplink path loss Or At the second moment t1, the terminal device measures the second downlink path loss Receives at least one second path loss offset value from the network device The second path loss offset value Updates the first path loss offset value Then determines the second uplink path loss or

[0186] Step S2022: The terminal device performs power headroom reporting according to the first uplink path loss and the second uplink path loss.

[0187] In a possible embodiment of the present application, performing power headroom reporting according to the first uplink path loss and the second uplink path loss includes: The terminal device performs power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold.

[0188] Wherein, the fourth preset threshold is determined by the network device.

[0189] For example, the network device sets the fourth preset threshold to 10 dB. The terminal device determines the first uplink path loss to be 70 dB according to the first downlink path loss and the first path loss offset value, and determines the second uplink path loss to be 90 dB according to the second downlink path loss and the second path loss offset value. Then, the change amount between the first uplink path loss and the second uplink path loss is 20 dB, which is greater than the first preset threshold of 10 dB. Then, the terminal device performs power headroom reporting. Or, the terminal device determines the second uplink path loss to be 75 dB according to the second downlink path loss and the second path loss offset value. At this time, the change amount between the first uplink path loss and the second uplink path loss is 5 dB, which is less than the first preset threshold of 10 dB. Then, the terminal device does not trigger power headroom reporting.

[0190] Optionally, the method provided in the embodiment of the present application further includes: The terminal device performs power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to the fourth preset threshold and the first uplink path loss has been used for power headroom reporting.

[0191] Wherein, the situation where the first uplink path loss has been used for power headroom reporting may be the most recent power headroom reporting or the previous power headroom reporting, which is not limited in the embodiment of the present application.

[0192] As an example, the terminal device receives the first path loss offset value at the first moment and obtains the first downlink path loss, and determines the first uplink path loss according to the first path loss offset value and the first downlink path loss. If the first uplink path loss has been used for power headroom reporting before the first moment, or has been used for power headroom reporting after the first moment and before the second moment, then the terminal device performs power headroom reporting.

[0193] In a possible embodiment of the present application, at least one first path loss offset value is received in a first time period, and at least one second path loss offset value is received in a second time period, and the first time period is before the second time period.

[0194] As an example, the path loss offset value for uplink transmission power control in the first time slot is obtained by accumulating multiple first path loss offset values, and the multiple first path loss offset values are sent by the network device to the terminal device during a first time period before the first time slot; the path loss offset value for uplink transmission power control in the second time slot is obtained by accumulating multiple second path loss offset values, and the multiple second path loss offset values are sent by the network device to the terminal device during a second time period after the first time slot and before the second time slot.

[0195] In a possible embodiment of the present application, the terminal device may obtain the downlink path loss and the received path loss offset value in the same time period or not in the same time period. For example, if the terminal device receives the first path loss offset value in the first time period, it may obtain the first downlink path loss within a time range before or after the first time period.

[0196] In a possible implementation manner of the present application, the first downlink path loss is obtained at the last time before the first time period or within the first preset time. Alternatively, the first downlink path loss is obtained at the most recent time after the first time period or within the second preset time.

[0197] Among them, the first time period and the second time period may also be the first moment and the second moment. For example, the terminal device receives a first path loss offset value at the first moment and a second path loss offset value at the second moment.

[0198] The following takes the example that the terminal device receives a first path loss offset value at the first moment and a second path loss offset value at the second moment for illustration.

[0199] As an example, the terminal device measures the first downlink path loss once every preset time. When the terminal device receives the first path loss offset value at the first moment, it takes the downlink path loss measured last time before the first moment as the first downlink path loss.

[0200] For example, the terminal device measures the downlink path loss every 10 ms. For example, it measures the downlink path loss at t1, t1 + 10 ms, and t1 + 20 ms respectively. When the first moment is t1 + 25 ms, that is, at t1 + 25 ms, the terminal device receives the first path loss offset value, and it takes the downlink path loss measured at t1 + 20 ms as the first downlink path loss. It can be understood that there are multiple measurements of the downlink path loss before t1 + 25 ms, and the first downlink path loss is the last one before the first moment.

[0201] As another example, when the terminal device receives the first path loss offset value at the first moment, it takes the downlink path loss measured within the first preset time before the first moment as the first downlink path loss.

[0202] For example, the first preset time is 10 ms. When the first moment is t1 + 25 ms, that is, at t1 + 25 ms, the terminal device receives the first path loss offset value, and then takes the downlink path loss measured within t1 + 15 ms to t1 + 25 ms as the first downlink path loss.

[0203] As an example, the terminal device measures the first downlink path loss once every preset time. When the terminal device receives the first path loss offset value at the first moment, it takes the downlink path loss measured most recently after the first moment as the first downlink path loss.

[0204] For example, the terminal device measures the downlink path loss once every 10 ms, such as measuring the downlink path loss at t1, t1 + 10 ms, and t1 + 20 ms respectively. When the first moment is t1 + 8 ms, that is, at t1 + 8 ms, the terminal device receives the first path loss offset value, and then takes the downlink path loss measured at t1 + 10 ms as the first downlink path loss. It can be understood that there are multiple measurements of the downlink path loss after t1 + 8 ms, and the first downlink path loss is the most recent one after the first moment.

[0205] As another example, when the terminal device receives the first path loss offset value at the first moment, it takes the downlink path loss measured within the second preset time after the first moment as the first downlink path loss.

[0206] For example, the first preset time is 10 ms. When the first moment is t1 + 8 ms, that is, at t1 + 8 ms, the terminal device receives the first path loss offset value, and then takes the downlink path loss measured within t1 + 8 ms to t1 + 18 ms as the first downlink path loss.

[0207] It should be noted that the first preset time and the second preset time may be the same or different, and are not limited in the embodiments of the present application.

[0208] In a possible implementation manner of the present application, the second downlink path loss is obtained at the last time before the second moment or within the first preset time. Alternatively, the second downlink path loss is obtained at the most recent time after the second moment or within the second preset time.

[0209] It can be understood that the time for the terminal device to obtain the second downlink path loss is similar to the time for obtaining the first downlink path loss, and will not be elaborated here.

[0210] It should be noted that the length of the first preset time is less than the length between the first moment and the second moment. The first preset time or the second preset time may be the same or different from the time interval for the terminal device to measure the first downlink path loss or the second downlink path loss, and is not limited in the embodiments of the present application.

[0211] It can be understood that when the terminal device receives at least one first path loss offset value in the first time period and at least one second path loss offset in the second time period, the specific implementation manner is similar to that of the above embodiment and will not be elaborated here. For example, at least one second path loss offset updates the first path loss offset value to determine a third path loss offset value, or multiple first path loss offsets determine a fourth path loss offset value, and multiple second path loss offset values determine a fifth path loss offset value.

[0212] In a possible embodiment of the present application, when at least one second path loss offset value from the network device is not received after receiving at least one first path loss offset value, the second uplink path loss is determined by the first downlink path loss and at least one first path loss offset value.

[0213] Among them, after the terminal device receives at least one first path loss offset value from the network device, it may not receive at least one second path loss offset value. For example, at the first moment, the network device sends at least one first path loss offset value to the terminal device. Correspondingly, the terminal device receives at least one first path loss offset value from the network device at the first moment; at the second moment, the network device does not send at least one second path loss offset value to the terminal device in time. Correspondingly, the terminal device does not receive at least one second path loss offset value at the second moment.

[0214] For example, the terminal device measures that the first downlink path loss is and receives the first path loss offset value from the network device The terminal device calculates the first uplink path loss according to and The terminal device does not receive the second path loss offset value. At this time, the terminal device calculates the second uplink path loss according to and

[0215] In a possible embodiment of the present application, when at least one second path loss offset value from the network device is not received after receiving at least one first path loss offset value, power headroom reporting is not performed.

[0216] For example, at the first moment t0, the terminal device measures that the first downlink path loss is and receives the first path loss offset value from the network device The terminal device calculates the first uplink path loss according to and At the second moment t1, the terminal device measures that the second downlink path loss is but does not receive the second path loss offset value. At this time, the terminal device calculates according to and​​​ Calculate the second uplink path loss In other words, the first uplink path loss is equal to the second uplink path loss, that is, the change amount between the first uplink path loss and the second uplink path loss is 0. Therefore, the terminal device does not report the power headroom.

[0217] In this application, the terminal device obtains at least one first path loss offset value and at least one second path loss offset value sent by the network device in the first time period and the second time period respectively, and directly reports the power headroom according to the at least one first path loss offset value and the at least one second path loss offset value; alternatively, the terminal device determines the first uplink path loss and the second uplink path loss based on the measured first downlink path loss and the second downlink path loss, and then determines the change amount between the first uplink path loss and the second uplink path loss by comparing the first uplink path loss and the second uplink path loss. When the change amount is greater than or equal to the preset threshold, the terminal device triggers the reporting of the power headroom. In this application, the network device indicates the path loss offset value, and the terminal device triggers the reporting of the power headroom through the path loss offset value, which can realize the reporting of the power headroom in the UL only TRP scenario.

[0218] In a possible embodiment of this application, as Figure 4 shown in another method for reporting power headroom provided by the embodiment of this application, where step S301 is the same as step S201 in the above embodiment and will not be described in detail here. Step S302, that is, the terminal device reports the power headroom based on the first path loss offset value and the second path loss offset value, includes:

[0219] Step S3011: The terminal device determines the first uplink path loss and the second uplink path loss.

[0220] For the specific implementation method, refer to the above embodiment and will not be described in detail here.

[0221] Step S3012: The terminal device reports the power headroom according to the first uplink path loss, the second uplink path loss, and the status of the timer.

[0222] Among them, the timer is a periodic timer (phr-Periodic-Timer).

[0223] In a possible embodiment of this application, the terminal device reports the power headroom when the change amount between the first uplink path loss and the second uplink path loss is greater than the fourth preset threshold and the timer is in the timeout state.

[0224] It can be understood that, on the basis of the above embodiment, when the timer is in the timeout state, the terminal device reports the power headroom. For the specific implementation method, refer to the above embodiment and will not be described in detail here.

[0225] Optionally, the method provided by the embodiments of the present application further includes: when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold, the timer is in an overtime state, and the first uplink path loss has been used for power headroom reporting, the terminal device performs power headroom reporting.

[0226] It can be understood that the situation where the first uplink path loss has been used for power headroom reporting can be that the first uplink path loss has been used for the most recent power headroom reporting or the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0227] In a possible embodiment of the present application, when the terminal device does not receive at least one second path loss offset value from the network device after receiving at least one first path loss offset value, the method provided by the embodiments of the present application includes: the terminal device performs power headroom reporting according to the change amount between the first downlink path loss and the second downlink path loss and the state of the timer.

[0228] As an example, at a first moment, the terminal device receives at least one first path loss offset value from the network device and measures the first downlink path loss. At a second moment, the terminal device measures the second downlink path loss but does not receive at least one second path loss offset value from the network device. Then, the terminal device determines whether to perform power headroom reporting according to the first downlink path loss, the second downlink path loss, and the state of the timer.

[0229] In a possible implementation manner of the present application, when the change amount between the first downlink path loss and the second downlink path loss is greater than a fifth preset threshold and the timer is in an overtime state, power headroom reporting is performed.

[0230] For example, when the path loss offset value is the difference between the downlink path loss and the uplink path loss, at a first moment t0, the terminal device measures the first downlink path loss receives the first path loss offset value from the network device and then determines the first uplink path loss At a second moment t1, the terminal device measures the second downlink path loss does not receive the second path loss offset value from the network device, and then determines the second uplink path loss At this time, if the first downlink path loss and the second downlink path loss the change amount between them exceeds the second preset threshold, and the timer (phr-Periodic-Timer) has timed out or is in an expired state, the terminal device triggers power headroom reporting.

[0231] For example, when the path loss offset value is the offset coefficient of the downlink path loss and the uplink path loss, at the first moment t0, the terminal device measures the first downlink path loss Receive the first path loss offset value from the network device Then determine the first uplink path loss At the second moment t1, the terminal device measures the second downlink path loss Receive the second path loss offset value from the network device Then

[0232] Determine the second uplink path loss At this time, if the change amount between the first downlink path loss and the second downlink path loss exceeds the second preset threshold, and the timer (phr-Periodic-Timer) has timed out or is in an expired state, then the terminal device triggers a power headroom report.

[0233] Optionally, the method provided in the embodiments of the present application further includes: when the change amount between the first downlink path loss and the second downlink path loss is greater than or equal to the fifth preset threshold, the timer is in a timeout state, and the first downlink path loss has been used for power headroom reporting, the terminal device performs power headroom reporting. Among them, the situation where the first downlink path loss has been used for power headroom reporting may be that the first downlink path loss has been used for the most recent power headroom reporting, or has been used for the previous power headroom reporting, which is not limited in the embodiments of the present application.

[0234] The embodiments of the present application provide a method for triggering a power headroom report. The network device sends at least one first path loss offset value and at least one second path loss offset value to the terminal device. Among them, at least one first path loss offset value and at least one second path loss offset value are used to trigger a power headroom report.

[0235] In a possible embodiment of the present application, the method provided in the embodiments of the present application includes: the network device sends a first path loss offset value to the terminal device and then sends a second path loss offset value. When the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, a power headroom report is triggered.

[0236] In a possible embodiment of the present application, the method provided in the embodiments of the present application includes: the network device sends a first path loss offset value to the terminal device and then receives at least one second path loss offset value. The first path loss offset value and at least one second path loss offset value are used to determine a third path loss offset value. When the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to the second preset threshold, a power headroom report is triggered.

[0237] In a possible embodiment of the present application, the method provided by the embodiment of the present application includes: a network device sends at least one first path loss offset value to a terminal device and then sends at least one second path loss offset value. The at least one first path loss offset value is used to determine a fourth path loss offset value, and the at least one second path loss offset value is used to determine a fifth path loss offset value. When the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold, power margin reporting is triggered.

[0238] As Figure 5 shown, a device 50 for triggering power margin reporting provided by an embodiment of the present application includes: a receiving unit 501 and a reporting unit 502.

[0239] Among them, the receiving unit 501 is configured to receive at least one first path loss offset value and at least one second path loss offset value, and the at least one first path loss offset value and the at least one second path loss offset value are from a network device.

[0240] Among them, the reporting unit 502 is configured to perform power margin reporting based on at least one first path loss offset value and at least one second path loss offset value.

[0241] In an embodiment of the present application, when receiving a second path loss offset value after receiving a first path loss offset value, the reporting unit 502 is configured to perform power margin reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold.

[0242] In an embodiment of the present application, when receiving at least one second path loss offset value after receiving a first path loss offset value, the reporting unit 502 is configured to determine a third path loss offset value based on the first path loss offset value and the at least one second path loss offset value. The reporting unit 502 is further configured to perform power margin reporting when the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

[0243] In an embodiment of the present application, when receiving a plurality of second path loss offset values after receiving a plurality of first path loss offset values, the reporting unit 502 is configured to determine a fourth path loss offset value based on the plurality of first path loss offset values, and is configured to determine a fifth path loss offset value based on the plurality of second path loss offset values. The reporting unit 502 is further configured to perform power margin reporting when the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold.

[0244] In an embodiment of the present application, the reporting unit 502 is configured to perform power margin reporting based on at least one first path loss offset value, at least one second path loss offset value, and the status of a counter.

[0245] In one embodiment of the present application, the reporting unit 502 is configured to perform power margin reporting when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold, or the change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold, or the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold, and the timer is in an overtime state.

[0246] In one embodiment of the present application, the reporting unit 502 is further configured to determine a first uplink path loss and a second uplink path loss.

[0247] Wherein, the first uplink path loss is determined by a first downlink path loss and a first path loss offset value, and the second uplink path loss is determined by a second downlink path loss and a second path loss offset value, or is determined by the first path loss offset value, the second downlink path loss, and the second path loss offset value.

[0248] The reporting unit 502 is further configured to perform power margin reporting according to the first uplink path loss and the second uplink path loss.

[0249] In one embodiment of the present application, the reporting unit 502 is configured to perform power margin reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than a fourth preset threshold.

[0250] In one embodiment of the present application, the first path loss offset value is received in a first time period, the second path loss offset value is received in a second time period, and the first time period is before the second time period.

[0251] In a possible implementation, the first downlink path loss is obtained at the last time before the first time period or within a first preset time. Alternatively, the first downlink path loss is obtained at the most recent time after the first time period or within a second preset time.

[0252] In a possible implementation, the second downlink path loss is obtained at the last time before the second time period or within a first preset time. Alternatively, the second downlink path loss is obtained at the most recent time after the second time period or within a second preset time.

[0253] In one embodiment of the present application, when the second path loss offset value from the network device is not received after the first path loss offset value is received, the second uplink path loss is determined by the first downlink path loss and the first path loss offset value.

[0254] In one embodiment of the present application, when the second path loss offset value from the network device is not received after the first path loss offset value is received, the reporting unit 502 does not perform power margin reporting.

[0255] In an embodiment of the present application, the reporting unit 502 is further configured to perform power headroom reporting according to the change amount between the first uplink path loss and the second uplink path loss, and the status of the timer.

[0256] In an embodiment of the present application, the reporting unit 502 is configured to perform power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than a first preset threshold and the timer is in an overtime state.

[0257] In an embodiment of the present application, when at least one second path loss offset value from the network device is not received after receiving at least one first path loss offset value, the reporting unit 502 is configured to perform power headroom reporting according to the change amount between the first downlink path loss and the second downlink path loss, and the status of the timer.

[0258] In an embodiment of the present application, the reporting unit 502 is configured to perform power headroom reporting when the change amount between the first downlink path loss and the second downlink path loss is greater than a second preset threshold and the timer is in an overtime state.

[0259] In an embodiment of the present application, the first path loss offset value is the difference or offset coefficient between the first downlink path loss and the first uplink path loss, and the second path loss offset value is the difference or offset coefficient between the second downlink path loss and the second uplink path loss.

[0260] Figure 6 The figure shows a schematic hardware structure diagram of a communication device provided by an embodiment of the present application. The hardware structures of the terminal device and the network device in the embodiments of the present application can refer to the structure as Figure 6 shown. The communication device includes a processor 601, a communication line 604, and at least one transceiver ( Figure 6 only the transceiver 603 is taken as an example for illustration).

[0261] The processor 601 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the solution of the present application.

[0262] The communication line 604 may include a path for transmitting information between the above components.

[0263] A transceiver 603, using any device of the transceiver type, is used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.

[0264] Optionally, the communication device may further include a memory 602.

[0265] The memory 602 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 602 can exist independently and be connected to the processor 601 through a communication line 604. The memory 602 can also be integrated with the processor 601.

[0266] Among them, the memory 602 is used to store computer execution instructions for implementing the solution of this application and is controlled by the processor 601 to execute. The processor 601 is used to execute the computer execution instructions stored in the memory 602, thereby implementing the policy control method provided in the following embodiments of this application.

[0267] Optionally, the computer execution instructions in the embodiments of this application can also be referred to as application code, and this application does not make specific limitations on this.

[0268] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as Figure 6 CPU0 and CPU1 in

[0269] In a specific implementation, as an embodiment, the communication device may include multiple processors, such as Figure 6The processors 601 and 606 therein. Each of these processors can be a single-CPU processor or a multi-CPU processor. The processors herein can refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0270] An embodiment of this application also provides a communication device, which can be a terminal device or a chip. The communication device can be used to execute the above method embodiments.

[0271] When the communication device is a terminal device, Figure 7 A schematic structural diagram of a simplified terminal device is shown. For ease of understanding and convenient illustration, Figure 7 in which, the terminal device takes a mobile phone as an example. As Figure 7 shown, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device. The processor is mainly used to process communication protocols and communication data, control the terminal device, execute software programs, process data of software programs, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal devices may not have an input / output device.

[0272] When data needs to be sent, after the processor performs baseband processing on the data to be sent, it outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Figure 7 only one memory and one processor are shown therein. In an actual terminal device product, there may be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be set independently of the processor or integrated with the processor. The embodiments of this application do not limit this.

[0273] In the embodiments of this application, the antenna and the radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing functions can be regarded as the processing unit of the terminal device.

[0274] As Figure 7As shown in the figure, the terminal device includes a transceiver unit 710 and a processing unit 720. The transceiver unit 710 can also be referred to as a transceiver, a transceiver machine, a transceiver device, etc. The processing unit 720 can also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the devices in the transceiver unit 710 for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiver unit 710 for implementing the sending function can be regarded as a sending unit, that is, the transceiver unit 710 includes a receiving unit and a sending unit. The transceiver unit can sometimes also be referred to as a transceiver machine, a transceiver, or a transceiver circuit, etc. The receiving unit can sometimes also be referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit can sometimes also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0275] For example, in one implementation, the processing unit 720 is used to execute the above method embodiments. The transceiver unit 710 is used for the relevant transceiver operations in the above method embodiments. For example, the transceiver unit 710 is used to send or receive DFT-s-OFDM symbols or SC-QAM symbols.

[0276] It should be understood that Figure 7 merely for illustration rather than limitation, the above terminal device including a transceiver unit and a processing unit may not depend on Figure 7 the structure shown in the figure.

[0277] When the communication device is a chip, the chip includes a transceiver unit and a processing unit. Among them, the transceiver unit can be an input / output circuit or a communication interface; the processing unit can be a processor, a microprocessor, or an integrated circuit integrated on the chip.

[0278] The embodiments of the present application further provide a communication device, which can be a network device or a chip. The communication device can be used to execute the above method embodiments. When the communication device is a network device, for example, it is a base station.

[0279] Figure 8 A simplified schematic diagram of the base station structure is shown. The base station includes a part 810 and a part 820. The part 810 is mainly used for the transceiver of radio frequency signals and the conversion between radio frequency signals and baseband signals; the part 820 is mainly used for baseband processing and controlling the base station, etc. The part 810 can usually be referred to as a transceiver unit, a transceiver machine, a transceiver circuit, or a transceiver, etc. The part 820 is usually the control center of the base station and can usually be referred to as a processing unit, which is used to control the base station to execute the processing operations on the network device side in the above method embodiments.

[0280] The transceiver unit of the 810 part, which can also be called a transceiver or a transceiver etc., includes an antenna and a radio frequency unit, where the radio frequency unit is mainly used for radio frequency processing. Optionally, the devices for implementing the receiving function in the 810 part can be regarded as the receiving unit, and the devices for implementing the sending function can be regarded as the sending unit, that is, the 810 part includes a receiving unit and a sending unit. The receiving unit can also be called a receiver, a receptor, or a receiving circuit etc., and the sending unit can be called a transmitter, a transmitter, or a transmitting circuit etc.

[0281] The 820 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processor is used to read and execute the programs in the memory to implement the baseband processing function and the control of the base station. If there are multiple single boards, they can be interconnected to enhance the processing ability. As an optional implementation manner, it can also be that multiple single boards share one or more processors, or multiple single boards share one or more memories, or multiple single boards share one or more processors simultaneously.

[0282] For example, in one implementation manner, the 820 part is used to execute the above method embodiments. The 810 part is used for the relevant transceiver operations in the above method embodiments. For example, the 810 part is used to send or receive DFT-s-OFDM symbols or SC-QAM symbols.

[0283] It should be understood that Figure 8 only for example and not limitation, the above network device including a transceiver unit and a processing unit may not depend on Figure 8 the shown structure.

[0284] Figure 9 is a schematic structural diagram of the chip 900 provided by the embodiments of the present application. The chip 900 includes one or more than two (including two) processors 910 and a communication interface 930.

[0285] Optionally, the chip 900 further includes a memory 940. The memory 940 can include a read-only memory and a random access memory, and provides operation instructions and data to the processor 910. A part of the memory 940 can also include a non-volatile random access memory (NVRAM).

[0286] In some embodiments, the memory 940 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

[0287] In the embodiments of the present application, by calling the operation instructions stored in the memory 940 (the operation instructions can be stored in the operating system), corresponding operations are executed.

[0288] The processor 910 controls the processing operations of the first terminal and any one of the base stations. The processor 910 may also be referred to as a central processing unit (CPU).

[0289] The memory 940 may include a read-only memory and a random access memory, and provide instructions and data to the processor 910. A part of the memory 940 may also include NVRAM. For example, in an application, the memory 940, the communication interface 930, and the memory 940 are coupled together through a bus system 920. The bus system 920 may include a power bus, a control bus, a status signal bus, etc. in addition to a data bus. However, for the sake of clear illustration, Figure 9 all kinds of buses are labeled as the bus system 920 in

[0290] The methods disclosed in the embodiments of the present application above can be applied to the processor 910 or implemented by the processor 910. The processor 910 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit in the hardware of the processor 910 or the instructions in the form of software. The above-mentioned processor 910 may be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 940, and the processor 910 reads the information in the memory 940 and combines its hardware to complete the steps of the above method.

[0291] The above communication unit may be a communication interface of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the communication unit is the communication interface of the chip for receiving or sending signals from other chips or devices.

[0292] The embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by the computer, the computer implements the above method embodiments.

[0293] An embodiment of the present application further provides a computer program product including instructions, which, when executed by a computer, cause the computer to implement the above method embodiment.

[0294] For the explanations and beneficial effects of the relevant content in any of the above-provided communication devices, reference may be made to the corresponding method embodiments provided above, which will not be elaborated here.

[0295] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement service processing through processes. For example, the Linux operating system, the Unix operating system, the Android operating system, the iOS operating system, or the Windows operating system, etc. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. Moreover, the embodiment of the present application does not particularly limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it can communicate according to the method provided in the embodiment of the present application by running a program recording the code of the method provided in the embodiment of the present application. For example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call and execute the program.

[0296] In addition, various aspects or features of the present application can be implemented as a method, an apparatus, or an article of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" used in the present application covers a computer program accessible from any computer-readable device, carrier, or medium. For example, the computer-readable medium can include, but is not limited to: magnetic storage devices (such as hard disks, floppy disks, or magnetic tapes, etc.), optical discs (such as compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (such as erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). In addition, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0297] It should be understood that the processor mentioned in the embodiments of this application may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0298] It should also be understood that the memory mentioned in the embodiments of this application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0299] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0300] Note that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

[0301] Those of ordinary skill in the art will appreciate that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0302] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0303] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0304] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0305] In addition, the functional units in the various embodiments of this application can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0306] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0307] As described above, the above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for triggering power margin reporting, characterized in that, The method includes: Receiving at least one first path loss offset value and at least one second path loss offset value, where at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value are from a network device; Based on at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value, performing a power margin report.

2. The method according to claim 1, characterized in that, In the case where one of the at least one second path loss offset value is received after receiving one of the at least one first path loss offset value, the performing a power margin report based on at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value includes: Performing the power margin report when a change amount between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold.

3. The method according to claim 2, wherein The method further includes: Performing the power margin report when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold and the first path loss offset value has been used for the power margin report.

4. The method according to claim 1, characterized in that, In the case where at least one of the at least one second path loss offset value is received after receiving one of the at least one first path loss offset value, the performing a power margin report based on at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value includes: Based on the first path loss offset value and at least one of the at least one second path loss offset value, determining a third path loss offset value; Performing the power margin report when a change amount between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

5. The method according to claim 1, wherein In the case where multiple ones of the at least one second path loss offset value are received after receiving multiple ones of the at least one first path loss offset value, the performing a power margin report based on at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value includes: Based on multiple ones of the at least one first path loss offset value, determining a fourth path loss offset value; Based on multiple ones of the at least one second path loss offset value, determining a fifth path loss offset value; Performing the power margin report when a change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold.

6. The method according to any one of claims 1 to 5, characterized in that The method includes: Based on at least one of the at least one first path loss offset value and at least one of the at least one second path loss offset value, and a status of a counter, performing a power margin report.

7. The method according to claim 6, characterized in that The method includes: Performing the power margin report when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, or the change amount between the first path loss offset value and a third path loss offset value is greater than or equal to the second preset threshold, or the change amount between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to the third preset threshold, and a timer is in an overtime state.

8. The method according to claim 2, 3 or 7, characterized in that, The method includes: Performing the power margin report when the change amount between the first path loss offset value and the second path loss offset value is greater than or equal to the first preset threshold, the timer is in an overtime state, and the first path loss offset value has been used for the power margin report.

9. The method according to any one of claims 1 to 5, characterized in that Performing power headroom reporting based on at least one of the first path loss offset values and at least one of the second path loss offset values includes: Determining a first uplink path loss and a second uplink path loss, where the first uplink path loss is determined by a first downlink path loss and at least one of the first path loss offset values, and the second uplink path loss is determined by a second downlink path loss and at least one of the second path loss offset values, or is determined by at least one of the first path loss offset values, the second downlink path loss, and at least one of the second path loss offset values; Performing the power headroom reporting according to the first uplink path loss and the second uplink path loss.

10. The method according to claim 9, wherein The performing the power headroom reporting according to the first uplink path loss and the second uplink path loss includes: Performing the power headroom reporting when a change amount between the first uplink path loss and the second uplink path loss is greater than or equal to a fourth preset threshold.

11. The method according to claim 10, wherein The method further includes: Performing the power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to the fourth preset threshold and the first uplink path loss has been used for the power headroom reporting.

12. The method according to any one of claims 1 to 8, characterized in that At least one of the first path loss offset values is received in a first time period, and at least one of the second path loss offset values is received in a second time period, and the first time period is before the second time period.

13. The method according to claim 12, wherein The first downlink path loss is obtained at the last time before the first time period or within a first preset time; Alternatively, the first downlink path loss is obtained at the most recent time after the first time period or within a second preset time.

14. The method according to claim 12, wherein The second downlink path loss is obtained at the last time before the second time period or within a first preset time; Alternatively, the second downlink path loss is obtained at the most recent time after the second time period or within a second preset time.

15. The method according to any one of claims 9 to 11, characterized in that, When at least one of the second path loss offset values from the network device is not received after receiving at least one of the first path loss offset values, the second uplink path loss is determined by the first downlink path loss and at least one of the first path loss offset values.

16. The method according to claim 15, characterized in that, When at least one of the second path loss offset values from the network device is not received after receiving at least one of the first path loss offset values, the power headroom reporting is not performed.

17. The method according to claim 9, wherein The method further includes: Performing the power headroom reporting according to a change amount between the first uplink path loss and the second uplink path loss and a status of a timer.

18. The method according to claim 17, wherein The method includes: Performing the power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to the fourth preset threshold and the timer is in an overtime state.

19. The method according to claim 18, wherein The method includes: Performing the power headroom reporting when the change amount between the first uplink path loss and the second uplink path loss is greater than or equal to the fourth preset threshold, the timer is in an overtime state, and the first uplink path loss has been used for power headroom reporting.

20. The method according to any one of claims 17 to 19, characterized in that, When at least one of the second path loss offset values from the network device is not received after receiving at least one of the first path loss offset values, the method includes: Perform the power headroom reporting according to the variation between the first downlink path loss and the second downlink path loss and the status of the timer.

21. The method according to claim 20, characterized in that, The method includes: Perform the power headroom reporting when the variation between the first downlink path loss and the second downlink path loss is greater than or equal to a fifth preset threshold and the timer is in an overtime state.

22. The method according to claim 21, wherein The method includes: Perform the power headroom reporting when the variation between the first downlink path loss and the second downlink path loss is greater than or equal to the fifth preset threshold, the timer is in an overtime state, and the first downlink path loss has been used for the power headroom reporting.

23. The method according to any one of claims 1 to 22, characterized in that, The first path loss offset value is the difference or offset coefficient between the first downlink path loss and the first uplink path loss, and the second path loss offset value is the difference or offset coefficient between the second downlink path loss and the second uplink path loss.

24. A method for triggering power margin reporting, characterized in that The method includes: Send at least one first path loss offset value and at least one second path loss offset value to the terminal device, where at least one of the first path loss offset values and at least one of the second path loss offset values are used to trigger the power headroom reporting.

25. The method according to claim 24, characterized in that, The method includes: Send one second path loss offset value after sending one first path loss offset value to the terminal device, and trigger the power headroom reporting when the variation between the first path loss offset value and the second path loss offset value is greater than or equal to a first preset threshold.

26. The method according to claim 24, wherein The method includes: Send one first path loss offset value and then at least one second path loss offset value to the terminal device, where the first path loss offset value and at least one of the second path loss offset values are used to determine a third path loss offset value; Trigger the power headroom reporting when the variation between the first path loss offset value and the third path loss offset value is greater than or equal to a second preset threshold.

27. The method according to claim 24, wherein The method includes: Send at least one first path loss offset value and then at least one second path loss offset value to the terminal device, where at least one of the first path loss offset values is used to determine a fourth path loss offset value and at least one of the second path loss offset values is used to determine a fifth path loss offset value; Trigger the power headroom reporting when the variation between the fourth path loss offset value and the fifth path loss offset value is greater than or equal to a third preset threshold.

28. A terminal device, characterized in that, The terminal device includes a memory and a processor. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. The execution of the instructions stored in the memory causes the processor to execute the method according to any one of claims 1 to 23, or execute the method according to any one of claims 24 to 27.

29. A chip, characterized in that, The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. The at least one processor is used to run a computer program or instructions to implement the method according to any one of claims 1 to 23, or implement the method according to any one of claims 24 to 27. The communication interface is used to communicate with other modules outside the chip.

30. A computer-readable storage medium, characterized in that, Instructions are stored in the computer-readable storage medium, and when the instructions are run, the method described in any one of claims 1 to 23 above is implemented, or the method described in any one of claims 24 to 27 above is implemented.

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