Reporting Method and Terminal for Power Headroom Report

Abstract

An embodiment of the present invention provides a method for reporting a power headroom report and a terminal, the method for reporting a power headroom report including: reporting a power headroom report including power headroom report information of at least one power control object when a trigger condition for reporting a power headroom report is satisfied, where the power control object is an antenna panel or a beam.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of wireless communication technology, and particularly to a method for reporting a power headroom report and a terminal.

Background Art

[0002] A user equipment (UE, also referred to as a terminal) triggers the reporting of a power headroom report (PHR) according to trigger conditions defined by a protocol. However, the PHR in the related art only includes the power headroom (PH) corresponding to a cell. When the UE performs transmission with the network side using different antenna panels or different beams, the PH corresponding to each panel or beam is always different, but these information are not included in the PHR in the related art, so accurate and detailed power control cannot be guaranteed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Embodiments of the present invention provide a method for reporting a power headroom report and a terminal for solving the problem that accurate and detailed power control cannot be guaranteed because the PHR in the related art only includes the PH corresponding to a cell.

Means for Solving the Problems

[0004] To solve the above technical problems, the present invention is realized as follows.

[0005] According to a first aspect, an embodiment of the present invention provides a method for reporting a power headroom report for use in a terminal. The method includes reporting a power headroom report including power headroom report information of at least one power control target when a trigger condition for reporting the power headroom report is satisfied, where the power control target is an antenna panel or a beam.

[0006] According to a second aspect, an embodiment of the present invention provides a terminal. The terminal includes a reporting module for reporting a power headroom report including power headroom report information of at least one power control target when a trigger condition for reporting the power headroom report is satisfied, where the power control target is an antenna panel or a beam.

[0007] According to a third aspect, an embodiment of the present invention provides a terminal. The terminal includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the steps of the method for reporting a power headroom report according to the first aspect are realized.

[0008] According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium. A computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, the steps of the method for reporting a power headroom report according to the first aspect are realized.

Advantages of the Invention

[0009] In an embodiment of the present invention, when a terminal reports a power headroom report, not only the power headroom corresponding to a cell but also the power headroom of an antenna panel or a beam can be reported, thereby ensuring accurate and detailed power control.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0011] By reading the detailed description of the preferred embodiments, various other advantages and beneficial aspects will become apparent to those skilled in the art. The accompanying drawings are only for showing the preferred embodiments and should not be regarded as limiting the present invention. And throughout the accompanying drawings, the same reference numerals indicate the same members.

[0012] As used in the specification and claims of this application, the term "comprising" and any variations thereof are intended to cover non-exclusive "comprising". For example, a process, method, system, product or device comprising a series of steps or units may include not only those steps or units that are clearly listed, but also other steps or units that are not clearly listed or are specific to those processes, methods, products or devices. It should be noted that "and / or" used in the specification and claims represents at least one of the connected objects. For example, A and / or B represents that it includes three cases: A alone, B alone, and the combination of A and B.

[0013] In the embodiments of the present invention, terms such as "exemplary" or "for example" are used to represent by way of example, illustration, or explanation. In the embodiments of the present invention, any embodiment or design solution described as "exemplary" or "for example" should not be construed as being more preferable or having more advantages than other embodiments or design solutions. To be precise, using terms such as "exemplary" or "for example" is intended to show related concepts in a specific manner.

[0014] The following introduces the embodiments of the present invention in conjunction with the accompanying drawings. The power headroom report method and terminal according to the embodiments of the present invention can be used in a wireless communication system. This wireless communication system can adopt a 5G system, or an Evolved Long Term Evolution (eLTE) system, or a subsequent evolved communication system.

[0015] Referring to FIG. 1, FIG. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1, this wireless communication system includes a network-side device 11 and a terminal 12, and the terminal 12 may be connected to the network-side device 11. In actual applications, the connection between the above devices may be a wireless connection. In order to conveniently and intuitively represent the connection relationship between the devices, it is shown by a solid line in FIG. 1.

[0016] It should be noted that the above communication system may include a plurality of terminals 12, and the network-side device 11 may communicate with the plurality of terminals 12 (it may transmit signaling or transmit data).

[0017] The network-side device 11 according to an embodiment of the present invention may be a base station, and this base station may be a commonly used base station, an evolved node base station (eNB), or a network-side device in a 5G system (for example, a next generation node base station (gNB) or a transmission and reception point (TRP)) or a device such as a cell, or a network-side device in a subsequent evolved communication system.

[0018] The terminal 12 according to an embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc.

[0019] Referring to FIG. 1, the present invention provides a method for reporting a power headroom report used in a terminal. This method includes the following.

[0020] Step 11: When the trigger condition for reporting the power headroom report is satisfied, report a power headroom report including the power headroom report information of at least one power control target, and the power control target is an antenna panel or a beam.

[0021] In an embodiment of the present invention, the antenna panel may be referred to as an antenna group, an antenna port group, an antenna set, an antenna port set, a beam set, a beam subset, an antenna array, an antenna port array, an antenna subarray, an antenna port subarray, a logic entity, an entity, or an antenna entity, etc.

[0022] In an embodiment of the present invention, the beam may be referred to as beam information, spatial relation information, spatial domain transmission filter information, spatial filter information, transmission configuration indication (TCI) state information, quasi co-location (QCL) information, or QCL parameters, etc. Among them, the downlink beam information may generally be represented by TCI state information or QCL information. The uplink beam information may generally be represented by spatial relation information.

[0023] In an embodiment of the present invention, when the terminal reports a power headroom report, it can report not only the power headroom corresponding to the cell, but also the power headroom of the antenna panel or the beam, thereby ensuring accurate and detailed power control.

[0024] The following briefly introduces the Power Headroom reporting (PHR).

[0025] PHR is Type 1 power headroom, which is the difference value between the nominal UE maximum transmit power and the estimated power transmitted by the Uplink Shared Channel (UL-SCH) in each activated serving cell, and Type 2 power headroom, which is the difference between the nominal terminal maximum transmit power and the estimated power transmitted by the UL-SCH and the Physical Uplink Control Channel (PUCCH) in a special cell (SpCell) of another MAC entity, where the other MAC entity may be an evolved UMTS terrestrial radio access (E-UTRA) MAC entity during an E-UTRA MAC entity when E-UTRA is the MCG and NR is the SCG for dual connectivity (EN-DC), NR-E-UTRA dual connectivity (NE-DC), NGEN-DC of NG-RAN E-UTRA-NR dual connectivity, It is for transmitting information such as Type 3 power headroom, which is the difference between the nominal UE maximum transmit power and the estimated power transmitted by the sounding reference signal (SRS) in each activated serving cell, to the network side.

[0026] In an embodiment of the present invention, optionally, the power headroom report information includes at least one of power headroom (PH), information of the serving cell, for example, the index of the cell, the maximum transmit power, P-MRP, the duty cycle, and indication information for indicating whether there is a power back-off.

[0027] The following describes the trigger conditions for reporting the power headroom report.

[0028] In an embodiment of the present invention, optionally, the trigger conditions include at least one of the following.

[0029] 1) The current power control target has been changed.

[0030] The change should be from the current power control target to another power control target, or it may be a change.

[0031] In an embodiment of the present invention, optionally, the current power control target refers to the power control target currently used by the terminal for connection or transmission with the network side.

[0032] Another power control target may be a power control target that is not currently used, activated, turned on, or added by the terminal.

[0033] In an embodiment of the present invention, optionally, the above-mentioned change in the current power control target means that the network side has instructed to change the current power control target, or the terminal has changed the current power control target according to a preset change trigger condition.

[0034] 2) The path loss measurement value or path loss measurement change value of the current power control target satisfies a first preset condition.

[0035] The first preset condition is, for example, that the path loss measurement value is greater than or equal to or less than a first preset threshold, or the path loss measurement change value is greater than or equal to a second preset threshold.

[0036] 3) The power back-off value or power back-off change value of the current power control target satisfies a second preset condition.

[0037] The second preset condition is, for example, that the power back-off value is greater than or equal to a third preset threshold, or the power back-off change value is greater than or equal to a fourth preset threshold.

[0038] 4) The power management maximum power reduction (P-MPR) value or P-MPR change value of the current power control target satisfies a third preset condition.

[0039] The third preset condition is, for example, that the P-MPR value is equal to or greater than a fifth preset threshold, or the P-MPR change value is equal to or greater than a sixth preset threshold.

[0040] 5) The P-MPR difference value between the current power control target and the first power control target satisfies a fourth preset condition.

[0041] In an embodiment of the present invention, the first power control target is any one power control target or a specified power control target among other power control targets other than the current power control target of the terminal. The specified power control target may be, for example, the power control target with the smallest P-MPR among other power control targets other than the current power control target.

[0042] The fourth preset condition is, for example, that the P-MPR difference value is greater than or equal to or less than a seventh preset threshold.

[0043] For example, assume that the terminal has a total of four antenna panels, the currently used antenna panel is antenna panel 1, the unused antenna panels are antenna panels 2, 3, and 4, the P-MPR difference value between antenna panel 2 and antenna panel 1 is a, the P-MPR difference value between antenna panel 3 and antenna panel 1 is b, and the P-MPR difference value between antenna panel 4 and antenna panel 1 is c. If c is greater than the seventh preset threshold, it may be determined that the trigger condition for reporting a power headroom report is satisfied. Among them, antenna panel 4 may or may not be the antenna panel to be currently changed.

[0044] 6) The link quality value or link quality change value of the current power control target satisfies the fifth preset condition.

[0045] The fifth preset condition is, for example, that the link quality value is less than or equal to the eighth preset threshold, or the link quality change value is greater than or equal to the ninth preset threshold.

[0046] In an embodiment of the present invention, optionally, the link quality may be a reference signal received power (RSRP) and / or a signal-to-interference and noise ratio (SINR). When the link quality includes both RSRP and SINR, the determination thresholds corresponding to RSRP and SINR are different.

[0047] 7) The link quality difference value between the current power control target and the first power control target satisfies the sixth preset condition.

[0048] In an embodiment of the present invention, the first power control target is any one of the other power control targets other than the current power control target of the terminal or a specified power control target. The specified control target may be, for example, the power control target with the best link quality among the other power control targets other than the current power control target.

[0049] In an embodiment of the present invention, optionally, the link quality may be a reference signal received power (RSRP) and / or a signal-to-interference and noise ratio (SINR).

[0050] 8) The power control target is activated or turned on or added.

[0051] 9) The location information of the current power control target or the first power control target has changed.

[0052] In an embodiment of the present invention, the first power control target is any one of the other power control targets other than the current power control target of the terminal or a specified power control target.

[0053] The arrangement information of the power control target may include at least one of a power control parameter (e.g., path loss reference signal, maximum transmission power, and / or TPC, etc.), switching instruction information of the power control target, on or off instruction information of the power control target, beam instruction or beam update information of the channel (e.g., TCI state information of the downlink channel or downlink reference signal (RS), spatial relation information of the uplink channel or uplink reference signal), control channel resource information corresponding to the power control target (e.g., CORESET arrangement information), and cell information corresponding to the power control target or transmit-receive point (TRP) identifier information.

[0054] 10) The transmit-receive point information of the service has been changed.

[0055] The transmit-receive point of the service refers to the transmit-receive point that performs connection or transmission with the terminal.

[0056] In an embodiment of the present invention, optionally, the above-mentioned change in the transmit-receive point information of the service means that the network side has arranged or activated new transmit-receive point information, or the arrangement information corresponding to the transmit-receive point information of the service has changed, or the related arrangement information of the control resource set has changed.

[0057] Among them, optionally, the related arrangement information includes at least one of control resource set pool index (CORESETPoolIndex) information, transmission configuration indication state (TCI state) information, and search space information.

[0058] Among them, optionally, the arrangement information corresponding to the transmission / reception point information of the service includes at least one of a transmission / reception point identifier, CORESETPoolIndex information, a group identifier, a cell identifier, and a physical cell identifier (PCI).

[0059] The following describes how to report a power headroom report.

[0060] In an embodiment of the present invention, at least one media access control control element (MAC CE) may be used to report a power headroom report.

[0061] In an embodiment of the present invention, when reporting a power headroom report, a terminal may use a single entry power headroom report media access control control element (single entry PHR MAC CE) and a multiple entry power headroom report media access control control element (multiple entry PHR MAC CE).

[0062] Referring to FIG. 3, the related single entry PHR MAC CE includes a cell power headroom (PH), and reporting contents such as a cell maximum transmission power (PCMAX,f,c) used to calculate the PH.

[0063] Referring to FIGS. 4 and 5, the related multiple entry PHR MAC CE includes whether there is a PH field corresponding to a serving cell index (ServCellIndex), and whether the PH value is based on actual transmission or based on a reference format, and a cell power headroom (PH) corresponding to the ServCellIndex The maximum transmission power of the cell corresponding to ServCellIndex (PCMAX,f,c), and The report content includes whether the MAC entity uses power backoff according to power management.

[0064] The following describes the MAC CE in the embodiments of the present invention.

[0065] (1) In some embodiments of the present invention, a power headroom report is reported using one MAC CE, and the MAC CE is accompanied by pre-set power headroom report information for the power control target.

[0066] That is, the power headroom report information (such as cell index, maximum transmission power, and / or PH, etc.) attached to the MAC CE all corresponds to the pre-set power control target.

[0067] In the embodiments of the present invention, a conventional MAC CE format may be used to report the power headroom report.

[0068] Optionally, the pre-set power control target is agreed upon by the protocol or arranged by the network side.

[0069] Optionally, the pre-set power control target is the current power control target or the power control target to be changed or the changed power control target.

[0070] In the embodiments of the present invention, optionally, since the network side can grasp the pre-set power control target corresponding to the power headroom report information attached to the MAC CE, the MAC CE may not be accompanied by the identifier or corresponding number of the pre-set power control target.

[0071] In an embodiment of the present invention, optionally, the power headroom report information includes at least one of a power headroom, information of a serving cell, maximum transmission power, P-MRP, Duty cycle, and indication information for indicating whether there is power back-off.

[0072] (2) In some embodiments of the present invention, one MAC CE is used to report a power headroom report, and at least one power headroom report information of a power control target is attached to the MAC CE.

[0073] In some embodiments of the present invention, optionally, identifier information or corresponding number information of the at least one power control target is further attached to the MAC CE.

[0074] In some embodiments of the invention, when the MAC CE is attached with power headroom report information of a plurality of power control targets, the power headroom report information of the plurality of power control targets is arranged according to a preset order. For example, it is arranged according to the identifier order of the power control target or the corresponding number order.

[0075] In an embodiment of the present invention, the identifier information or the corresponding number information includes at least one of identifier information or corresponding number information of an antenna panel, identifier information or corresponding number information of a beam, identifier information or corresponding number information of an antenna panel, and identifier information or corresponding number information of a beam corresponding to the antenna panel.

[0076] In an embodiment of the present invention, the identifier of the antenna panel may be an antenna group identifier, an antenna port group identifier, an antenna set identifier, an antenna port set identifier, a beam set identifier, a beam subset identifier, an antenna array identifier, an antenna port array identifier, an antenna subarray identifier, an antenna port subarray identifier, a logic entity identifier, an entity identifier, an antenna entity identifier, a reference signal resource allocation identifier, a reference signal resource identifier, a reference signal resource set identifier, a TCI state identifier, a quasi-collocation (QCL) information identifier, a spatial relationship identifier, or the like.

[0077] In an embodiment of the present invention, the at least one power control target may be all or part of the power control targets of the terminal.

[0078] Optionally, in an embodiment of the present invention, the power control target includes the current power control target.

[0079] Optionally, in an embodiment of the present invention, the power headroom report information includes at least one of a power headroom, information of a serving cell, a maximum transmission power, P-MRP, a duty cycle, and indication information for indicating whether there is a power back-off.

[0080] In an embodiment of the present invention, any one of the power headroom report information is cell specific for the serving cell, or panel specific or beam specific for the power control target, or specific for the power control target corresponding to the serving cell.

[0081] (3) In some embodiments of the present invention, multiple MAC CEs are used to report the power headroom report, and at least one piece of power headroom report information of the power control target is attached to each of the MAC CEs.

[0082] This embodiment includes two cases: a case where one piece of power headroom report information of one power control target is attached to one MAC CE, and a case where multiple pieces of power headroom report information of multiple power control targets are attached to one MAC CE.

[0083] In some embodiments, each of the MAC CEs is further attached with the identifier information or corresponding number information of the power control target for distinction.

[0084] In some embodiments, the identifier information of each of the MAC CEs corresponds to the identifier information of the corresponding power control target.

[0085] In this method, it is necessary to pre-agree on the correspondence relationship between the identifier information of the MAC CE and the identifier information of the power control target or to instruct it via the network. For example, when one MAC CE carries one piece of power headroom report information of one power control target, the correspondence relationship may be that the MAC CE with identifier 1 corresponds to antenna panel A, and the MAC CE with identifier 2 corresponds to antenna panel B. When one MAC CE carries multiple pieces of power headroom report information of multiple power control targets, the correspondence relationship may be that the MAC CE with identifier 1 corresponds to antenna panels A and B, and the MAC CE with identifier 2 corresponds to antenna panels C and D.

[0086] In some embodiments, optionally, when multiple pieces of power headroom report information of multiple power control targets are attached to the MAC CE, the multiple pieces of power headroom report information of the multiple power control targets are arranged according to a preset order. For example, they are arranged according to the identifier order of the power control targets or the corresponding number order.

[0087] In an embodiment of the present invention, the identifier information or the corresponding number information is the identifier information or the corresponding number information of the antenna panel, and the identifier information or the corresponding number information of the beam, and at least one of the identifier information or the corresponding number information of the antenna panel, and the identifier information or the corresponding number information of the beam corresponding to the antenna panel (for example, a certain beam of a certain antenna panel).

[0088] In an embodiment of the present invention, the identifier of the antenna panel may be an antenna group identifier, an antenna port group identifier, an antenna set identifier, an antenna port set identifier, a beam set identifier, a beam subset identifier, an antenna array identifier, an antenna port array identifier, an antenna subarray identifier, an antenna port subarray identifier, a logic entity identifier, an entity identifier, an antenna entity identifier, a reference signal resource allocation identifier, a reference signal resource identifier, a reference signal resource set identifier, a TCI state identifier, a quasi-collocation (QCL) information identifier, or a spatial relationship identifier, etc.

[0089] In an embodiment of the present invention, optionally, the power headroom report information is the power headroom, and the information of the serving cell, and the maximum transmission power, and P-MRP, and Duty cycle, and at least one of the instruction information for indicating whether there is a power backoff.

[0090] In an embodiment of the present invention, optionally, when at least one power control target power headroom report information is attached to the MAC CE, any one of the power headroom report information is dedicated to the serving cell, or dedicated to the power control target, or dedicated to the power control target corresponding to the serving cell.

[0091] Furthermore, optionally, the power headroom and the maximum transmission power are dedicated to the power control target, or dedicated to the power control target corresponding to the serving cell. Of course, other information (for example, P-MPR) may also be dedicated to the power control target, or dedicated to the power control target corresponding to the serving cell.

[0092] In each of the above embodiments, the power control target is an antenna panel, a beam, a beam corresponding to the antenna panel.

[0093] The MAC CE includes identifier information or corresponding number information of the power control target. When the power control target is a beam corresponding to the antenna panel, the MAC CE also includes identifier information or corresponding number information of the antenna panel, and identifier information or corresponding number information of the beam corresponding to the antenna panel.

[0094] The MAC CE for reporting the power headroom report may be attached with at least one power headroom report information of the antenna panel, or at least one power headroom report information of the beam, or at least one power headroom report information of the beam corresponding to the antenna panel.

[0095] In some embodiments of the present invention, optionally, further includes determining power headroom information according to the measurement result corresponding to the power control target before reporting the power headroom report described above.

[0096] The measurement result is, for example, the measurement result of a downlink reference signal (DL RS) (e.g., path loss RS). For the path loss reference in a 5G NR system, the network side may simultaneously arrange a plurality of downlink path loss references for one cell (for example, each path loss reference corresponds to a different reference signal (e.g., path_loss_reference_1 corresponds to Synchronous Signal Block 1 (SSB1), and path_loss_reference_2 corresponds to SSB2)). Among them, the plurality of downlink path loss references of each cell may correspond to different power control targets, that is, they may be used for path loss measurements corresponding to different power control targets. For the uplink transmission of the terminal (e.g., PUCCH, PUSCH, SRS), the network side may instruct the terminal to change the path loss reference currently used via RRC or MAC CE or PDCCH.

[0097] In an embodiment of the present invention, P-MPR etc. may be determined by other measurements.

[0098] For a power control target that is not currently in use or not activated or not turned on or not added, power headroom information may be determined according to the measurement result corresponding to the power control target, and the determined power headroom information is virtual power headroom information (virtual PH).

[0099] In some embodiments of the present invention, optionally, determining the power headroom information according to the measurement result corresponding to the power control target described above includes measuring the downlink reference signal corresponding to the power control target and determining the power headroom of the power control target according to the measurement result of the downlink reference signal.

[0100] In an embodiment of the present invention, optionally, all or part of the calculation parameters used when determining power headroom information are dedicated to the power control target.

[0101] That is, the power headroom information may be calculated using the calculation formula in the conventional 3GPP (registered trademark) protocol. However, all of the calculation parameters in the conventional calculation formula are cell specific. In an embodiment of the present invention, all or part of the calculation parameters used in the calculation formula may be changed to be dedicated to the power control target. The calculation parameters changed to be dedicated to the power control target described above may be arranged by the network-side device using radio resource control (RRC) signaling. Or, the formula may be directly agreed upon by the protocol.

[0102] In an embodiment of the present invention, optionally, the power headroom is calculated using formula (1).

[0103]

Equation

[0104] Here, the calculation parameters include the following: JPEG0007705872000002.jpg42159

[0105] Among the above calculation parameters, the maximum transmission power, partial path loss compensation coefficient, path loss estimation, etc. are dedicated to the power control target, and may be, for example, panel specific or beam specific.

[0106] Referring to FIG. 6, an embodiment of the present invention further provides a terminal 60. This terminal 60 When the trigger condition for reporting the power headroom report is satisfied, it includes a reporting module 61 for reporting a power headroom report including power headroom report information of at least one power control target, and the power control target is an antenna panel or a beam.

[0107] In an embodiment of the present invention, the antenna panel may be referred to as an antenna group, an antenna port group, an antenna set, an antenna port set, a beam set, a beam subset, an antenna array, an antenna port array, an antenna sub-array, an antenna port sub-array, a logic entity, an entity, or an antenna entity, etc.

[0108] In an embodiment of the present invention, the beam may be referred to as beam information, spatial relation information, spatial domain transmission filter information, spatial domain filter information, transmission arrangement indication state information, QCL information, or QCL parameters, etc. Among them, the downlink beam information may generally be represented by TCI state information or QCL information. The uplink beam information may generally be represented by spatial relation information.

[0109] In an embodiment of the present invention, when the terminal reports the power headroom report, it can report not only the power headroom of the cell corresponding to the cell, but also the power headroom of the antenna panel or the beam, thereby ensuring accurate and detailed power control.

[0110] Optionally, the trigger condition is that the current power control target has been changed, that the path loss measurement value or path loss measurement change value of the current power control target satisfies a first preset condition, that the power back-off value or power back-off change value of the current power control target satisfies a second preset condition, that the power management maximum power reduction P-MPR value or P-MPR change value of the current power control target satisfies a third preset condition, The P-MPR difference value between the current power control target and the first power control target satisfies the fourth preset condition, The link quality value or link quality change value of the current power control target satisfies the fifth preset condition, The link quality difference value between the current power control target and the first power control target satisfies the sixth preset condition, The power control target has been activated or turned on or added, The location information of the current power control target or the first power control target has changed, including at least one of the change of the service transmission and reception point information, wherein the first power control target is any one power control target or a specified power control target among other power control targets other than the current power control target of the terminal.

[0111] Optionally, the change of the current power control target as described above is that the network side has instructed to change the current power control target, or the terminal has changed the current power control target according to the preset change trigger condition.

[0112] Optionally, the change of the service transmission and reception point information as described above is that the network side has arranged or activated new transmission and reception point information, or the location information corresponding to the service transmission and reception point information has changed, or the related location information of the control resource set has changed.

[0113] Optionally, the related location information includes at least one of the control resource set pool index CORESETPoolIndex information, the transmission location indication status information, and the search space information.

[0114] Optionally, the arrangement information corresponding to the transmission / reception point information of the service includes at least one of a transmission / reception point identifier, CORESETPoolIndex information, a group identifier, a cell identifier, and a physical cell identifier.

[0115] Optionally, reporting the power headroom report as described above includes reporting the power headroom report using at least one MAC CE.

[0116] Optionally, the reporting module 61 reports the power headroom report using one MAC CE, and the MAC CE is accompanied by pre-set power headroom report information for a power control target.

[0117] Optionally, the pre-set power control target is one agreed upon by a protocol or arranged by the network side.

[0118] Optionally, the pre-set power control target is the current power control target or a power control target to be changed or a changed power control target.

[0119] Optionally, the reporting module 61 reports the power headroom report using one MAC CE, and the MAC CE is accompanied by at least one power headroom report information for a power control target.

[0120] Optionally, the MAC CE is further accompanied by identifier information or corresponding number information for the at least one power control target.

[0121] Optionally, the power control target includes the current power control target.

[0122] Optionally, the reporting module 61 reports a power headroom report using a plurality of MAC CEs, and at least one piece of power headroom report information for a power control target is attached to each of the MAC CEs.

[0123] Optionally, when a plurality of pieces of power headroom report information for power control targets are attached to the MAC CE, the plurality of pieces of power headroom report information for power control targets are arranged according to a preset order.

[0124] Optionally, each of the MAC CEs is further attached with the identifier information or corresponding number information of the power control target, or the identifier information of each of the MAC CEs corresponds to the identifier information of the corresponding power control target.

[0125] Optionally, the identifier information or the corresponding number information is the identifier information or the corresponding number information of the antenna panel, and the identifier information or the corresponding number information of the beam, and includes at least one of the identifier information or the corresponding number information of the antenna panel and the identifier information or the corresponding number information of the beam corresponding to the antenna panel.

[0126] In an embodiment of the present invention, the identifier of the antenna panel may be an antenna group identifier, an antenna port group identifier, an antenna set identifier, an antenna port set identifier, a beam set identifier, a beam subset identifier, an antenna array identifier, an antenna port array identifier, an antenna subarray identifier, an antenna port subarray identifier, a logic entity identifier, an entity identifier, an antenna entity identifier, a reference signal resource allocation identifier, a reference signal resource identifier, a reference signal resource set identifier, a TCI state identifier, a quasi-collocation (QCL) information identifier, or a spatial relationship identifier, etc.

[0127] Optionally, the power headroom report information includes at least one of the power headroom, the information of the serving cell, the maximum transmit power, P-MRP, Duty cycle, and the indication information for indicating whether there is power back-off.

[0128] Optionally, when at least one power headroom report information of the power control target is attached to the MAC CE, any one of the power headroom report information is cell specific for the serving cell, or dedicated to the power control target (for example, panel specific or beam specific), or dedicated to the power control target corresponding to the serving cell.

[0129] Further optionally, the power headroom and the maximum transmit power are dedicated to the power control target, or dedicated to the power control target corresponding to the serving cell. Of course, other information (for example, P-MPR) may be dedicated to the power control target, or dedicated to the power control target corresponding to the serving cell.

[0130] Optionally, the power control target is an antenna panel, a beam, or a beam corresponding to the antenna panel.

[0131] Optionally, the terminal further includes a determination module for determining power headroom information according to the measurement result corresponding to the power control target.

[0132] Optionally, the determination module is used to measure a downlink reference signal corresponding to the power control target and determine the power headroom of the power control target according to the measurement result of the downlink reference signal.

[0133] Optionally, all or part of the calculation parameters used when determining the power headroom information are dedicated to the power control target.

[0134] That is, the power headroom information may be calculated using the calculation formula in the conventional 3GPP protocol. However, all the calculation parameters in the conventional calculation formula are cell specific. In the embodiments of the present invention, all or part of the calculation parameters used in the calculation formula may be changed to be dedicated to the power control target. The calculation parameters changed to be dedicated to the power control target described above may be configured by the network-side device using radio resource control (RRC) signaling. Or, the formula may be directly agreed upon by the protocol.

[0135] In the embodiments of the present invention, optionally, the power headroom is calculated using Equation (2).

[0136]

Equation

[0137] Here, the calculation parameters include the following: JPEG0007705872000004.jpg43164

[0138] Among the above calculation parameters, the maximum transmit power, partial path loss compensation coefficient, path loss estimation, etc. may be dedicated to the power control target, for example, panel specific or beam specific.

[0139] The terminal according to an embodiment of the present invention can implement each process implemented by the terminal in the embodiment of the method in FIG. 2. To avoid repetition of the description, it will not be described further herein.

[0140] FIG. 7 is a schematic diagram of the hardware structure of a terminal for implementing each embodiment of the present invention. This terminal 70 includes components such as a radio frequency unit 71, a network module 72, an audio output unit 73, an input unit 74, a sensor 75, a display unit 76, a user input unit 77, an interface unit 78, a memory 79, a processor 710, and a power supply 711, but is not limited thereto. As can be understood by those skilled in the art, the structure of the terminal shown in FIG. 7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown, or any combination of components, or different arrangements of components. In the embodiments of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm top computer, an in-vehicle terminal, a wearable device, and a pedometer.

[0141] Among them, the processor 710 is for reporting a power headroom report including power headroom report information of at least one power control target when a trigger condition for reporting a power headroom report is satisfied, and the power control target is an antenna panel or a beam.

[0142] In the embodiments of the present invention, when the terminal reports a power headroom report, it can report not only the power headroom corresponding to the cell but also the power headroom of the antenna panel or the beam, thereby ensuring accurate and detailed power control.

[0143] The terminal according to an embodiment of the present invention can implement each process implemented by the terminal in the embodiment of the method in FIG. 2. To avoid repetition of the description, it will not be described further herein.

[0144] It should be understood that in the embodiments of the present invention, the radio frequency unit 71 may be used for transmitting and receiving information or signals during a call. Specifically, after receiving downlink data from a base station, it may be processed by the processor 710. Also, uplink data may be transmitted to the base station. Generally, the radio frequency unit 71 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. Note that the radio frequency unit 71 may communicate with other devices via a wireless communication system or network.

[0145] The terminal provides the user with wireless broadband Internet access through the network module 72, and supports, for example, sending and receiving emails to / from the user, browsing web pages, accessing streaming media, etc.

[0146] The audio output unit 73 can convert audio data received by the radio frequency unit 71 or the network module 72 or stored in the memory 79 into an audio signal and output it as sound. And the audio output unit 73 can further provide audio output related to specific functions executed by the terminal 70 (for example, call signal reception sound, message incoming sound, etc.). The audio output unit 73 includes a speaker, a buzzer, a receiver, etc.

[0147] The input unit 74 is used to receive audio or video signals. The input unit 74 may include a Graphics Processing Unit (GPU) 741 and a microphone 742. The graphics processor 741 processes the image data of a still image or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The processed image frame may be displayed on the display unit 76. The image frame processed by the graphics processor 741 may be stored in the memory 79 (or other storage media), or may be transmitted via the radio frequency unit 71 or the network module 72. The microphone 742 can receive sound and process such sound as audio data. The processed audio data may be output after being converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 71 in the call mode of the phone.

[0148] The terminal 70 further includes at least one sensor 75, such as an optical sensor, a motion sensor, and other sensors. Specifically, the optical sensor includes an ambient light sensor and a proximity sensor. Among them, the ambient light sensor can adjust the brightness of the display panel 761 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 761 and / or the backlight when the terminal 70 moves close to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity at rest, and can be used for identifying the terminal posture (e.g., vertical and horizontal screen switching, related games, magnetometer posture calibration), vibration identification related functions (e.g., pedometer, tap), etc. The sensor 75 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyro, a barometer, a hygrometer, a thermometer, an infrared sensor, etc. This will not be further described here.

[0149] The display unit 76 is used to display information input by the user or information provided to the user. The display unit 76 may include a display panel 761. The display panel 761 may be arranged in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0150] The user input unit 77 may be used to receive input numerical or character information and generate key signal inputs related to the installation and function control by the user of the terminal. Specifically, the user input unit 77 includes a touch panel 771 and other input devices 772. The touch panel 771, also called a touch screen, can collect touch operations by the user thereon or in its vicinity (for example, operations performed by the user on or near the touch panel 771 using any appropriate object or accessory such as a finger or a touch pen). The touch panel 771 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the touch orientation by the user, detects the signal from the touch operation, and transmits the signal to the touch controller. The touch controller receives the touch information from the touch detection device, converts it into touch point coordinates, then transmits it to the processor 710, and receives and executes the commands transmitted from the processor 710. Note that the touch panel 771 may be realized using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 771, the user input unit 77 may include other input devices 772. Specifically, the other input devices 772 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), a trackball, a mouse, and an operation lever. This will not be further explained here.

[0151] Furthermore, the touch panel 771 may be covered on the display panel 761. When the touch panel 771 detects a touch operation thereon or in its vicinity, it transmits the detection to the processor 710 to identify the type of touch event. Then, the processor 710 provides corresponding visual output on the display panel 761 according to the type of touch event. In FIG. 7, the touch panel 771 and the display panel 761 are two independent members that realize the input and output functions of the terminal. However, in some embodiments, the touch panel 771 and the display panel 761 may be integrated to realize the input and output functions of the terminal. Specifically, it is not limited here.

[0152] The interface unit 78 is an interface for connecting the external device and the terminal 70. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting to a device having an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and the like. The interface unit 78 may be used to receive an input (such as data information, power, etc.) from the external device and transmit the received input to one or more elements within the terminal 70, or may be used to transmit data between the terminal 70 and the external device.

[0153] The memory 79 may be used to store software programs and various types of data. The memory 79 may mainly include a storage program area and a storage data area. Among them, the storage program area can store an operating system, application programs required for at least one function (such as a voice playback function, an image playback function, etc.), and the storage data area can store data created by using the mobile phone (such as audio data, phone book, etc.). Note that the memory 79 may include a high-speed random access memory, and may further include a non-volatile memory, for example, at least one magnetic disk memory device, a flash memory device, or other non-volatile solid-state memory devices.

[0154] The processor 710 is the control center of the terminal, and is connected to each part of the entire terminal through various interfaces and lines. It runs or executes the software programs and / or modules stored in the memory 79, and calls the data stored in the memory 79 to execute various functions of the terminal and process the data, thereby monitoring the entire terminal. The processor 710 may include one or more processing units. Preferably, the processor 710 may integrate an application processor and a modem processor. Among them, the application processor is mainly for processing an operating system, a user interface, application programs, etc., and the modem processor is mainly for processing wireless communication. As can be understood, the above modem processor may not be integrated into the processor 710.

[0155] The terminal 70 may further include a power supply 711 (such as a battery) that supplies power to each member. Preferably, the power supply 711 may be logically connected to the processor 710 by a power management system. Thereby, functions such as charge and discharge management and power consumption management can be realized by the power management system.

[0156] In addition, the terminal 70 includes some functional modules not shown here. Further explanation will not be provided here.

[0157] Referring to FIG. 8, an embodiment of the present invention further provides a terminal 80. The terminal 80 includes a processor 81, a memory 82, and a computer program stored in the memory 82 and executable on the processor 81. When this computer program is executed by the processor 81, each process of the embodiment of the above-described power headroom report reporting method can be realized, and the same technical effects can be achieved. To avoid repetition of the description, further explanation will not be provided here.

[0158] An embodiment of the present invention further provides a computer-readable storage medium. A computer program is stored in the computer-readable storage medium. When this computer program is executed by a processor, each process of the embodiment of the above-described power headroom report reporting method can be realized, and the same technical effects can be achieved. To avoid repetition of the description, further explanation will not be provided here. Among them, the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0159] It should be noted that in this specification, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive "include", so that a process, method, article or device including a series of elements includes not only those elements but also other elements not explicitly listed, or elements specific to such a process, method, article or device. In the case of no further limitation, for an element limited by the phrase "comprising one...", it is not excluded that there are other same elements in the process, method, article or device including this element.

[0160] As is clearly understood by those skilled in the art from the description of the above embodiments, the method of the above embodiments may be implemented in the form of software and a necessary general-purpose hardware platform. Of course, it may also be implemented by hardware, but in many cases, the former is a preferred embodiment. Based on such an understanding, the technical solution of the present invention may also be represented in the form of a software product in essence or in the part that has contributed to the prior art. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0161] The above has described the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The above specific embodiments are merely exemplary and not restrictive. Those skilled in the art can make many forms of changes based on the suggestions of the present invention without departing from the spirit of the present invention and the scope protected by the claims, and all of them fall within the scope of the claims of the present invention.

[0162] Cross-reference to Related Applications This application claims priority to Chinese Patent Application No. 202010152859.X filed in China on March 6, 2020, and the entire content of the application is incorporated herein by reference.

Claims

1. A method for reporting a power headroom report executed by a terminal, comprising: when a trigger condition for reporting a power headroom report is satisfied, reporting a power headroom report including power headroom report information of at least one power control target, wherein the power control target is an antenna panel or a beam; reporting the power headroom report includes: reporting a power headroom report using at least one MAC CE, and when the MAC CE is attached with power headroom report information of a plurality of power control targets, the power headroom report information of the plurality of power control targets is arranged according to a preset order; when the MAC CE is attached with power headroom report information of a plurality of antenna panels or beams, the power headroom report information of the plurality of antenna panels or beams is arranged according to the identifier order of the plurality of antenna panels or beams, or arranged according to the corresponding number order of the plurality of antenna panels or beams; the trigger condition includes: that the link quality value or link quality change value of the current power control target satisfies a fifth preset condition; including at least one of that the link quality difference value between the current power control target and the first power control target satisfies a sixth preset condition, wherein the first power control target is any one of the other power control targets other than the current power control target of the terminal or a specified power control target; A method for reporting a power headroom report.

2. The trigger condition further includes: that the current power control target has been changed; that the path loss measurement value or path loss measurement change value of the current power control target satisfies a first preset condition; that the power back-off value or power back-off change value of the current power control target satisfies a second preset condition; that the power management maximum power reduction P-MPR value or P-MPR change value of the current power control target satisfies a third preset condition; that the P-MPR difference value between the current power control target and the first power control target satisfies a fourth preset condition; that the power control target has been activated or turned on or added; That the arrangement information of the current power control target or the first power control target has changed, and at least one of the change of the transmission / reception point information of the service is included, The method for reporting a power headroom report according to claim 1.

3. That the current power control target has changed means that the network side has instructed to change the current power control target, or that the terminal has changed the current power control target according to a preset change trigger condition, That the transmission / reception point information of the service has changed means that the network side has arranged or activated new transmission / reception point information, or that the arrangement information corresponding to the transmission / reception point information of the service has changed, or that the related arrangement information of the control resource set has changed, The method for reporting a power headroom report according to claim 2.

4. The related arrangement information of the control resource set includes at least one of control resource set pool index CORESET Pool Index information, transmission arrangement indication status information, and search space information, or The arrangement information corresponding to the transmission / reception point information of the service includes at least one of a transmission / reception point identifier, CORESET Pool Index information, a group identifier, a cell identifier, and a physical cell identifier. The method for reporting a power headroom report according to claim 3.

5. The MAC CE is further accompanied by identifier information or corresponding number information of the at least one power control target. The method for reporting a power headroom report according to claim 1.

6. Each of the MAC CEs is further accompanied by identifier information or corresponding number information of the power control target, or The identifier information of each of the MAC CEs corresponds to the identifier information of the corresponding power control target. The method for reporting a power headroom report according to claim 1.

7. The identifier information or corresponding number information is identifier information or corresponding number information of an antenna panel, identifier information or corresponding number information of a beam, The method for reporting a power headroom report according to claim 5 or claim 6, including at least one of identifier information or corresponding number information of an antenna panel and identifier information or corresponding number information of a beam corresponding to the antenna panel.

8. The power headroom report information includes a power headroom, information of a serving cell, a maximum transmission power, a P-MRP, a duty cycle Duty cycle, and indication information for indicating whether there is a power back-off, and the method for reporting a power headroom report according to claim 1 includes at least one of them.

9. Before reporting the power headroom report, The method for reporting a power headroom report according to claim 1 further includes determining power headroom information according to a measurement result corresponding to the power control target.

10. Determining the power headroom information according to the measurement result corresponding to the power control target includes measuring a downlink reference signal corresponding to the power control target, and determining the power headroom of the power control target according to the measurement result of the downlink reference signal. The method for reporting a power headroom report according to claim 9.

11. A terminal, When a trigger condition for reporting a power headroom report is satisfied, a reporting module for reporting a power headroom report including power headroom report information of at least one power control target, where the power control target is an antenna panel or a beam, and A reporting module for reporting a power headroom report using at least one MAC CE. When power headroom report information of a plurality of power control targets is attached to the MAC CE, the power headroom report information of the plurality of power control targets is arranged according to a preset order. When power headroom report information of a plurality of antenna panels or beams is attached to the MAC CE, the power headroom report information of the plurality of antenna panels or beams is arranged according to the identifier order of the plurality of antenna panels or beams, or arranged according to the corresponding number order of the plurality of antenna panels or beams. The trigger condition is that the link quality value or link quality change value of the current power control target satisfies a fifth preset condition. including at least one of the link quality difference value between the current power control target and the first power control target satisfying a sixth preset condition wherein the first power control target is any one of the other power control targets other than the current power control target of the terminal or a specified power control target Terminal

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