Power headroom reporting method and relevant devices

Abstract

A power headroom reporting method and relevant devices are provided. The method by a terminal device includes transmitting a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) to a network device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and comprises a first set of parameters for a first transmission / reception point (TRP) and a second set of parameters for a second TRP, and wherein the first set of parameters comprises a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters comprises a second PH and a second PCmax that are associated with the second TRP. This enhances power headroom reporting for simultaneous uplink transmission over multiple planes.

Description

[0001] POWER HEADROOM REPORTING METHOD AND RELEVANT DEVICES

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application claims the benefit of priority to U.S. Provisional Application No. 63 / 550,557, filed February 6, 2024, which is incorporated by reference herein in its entirety.

[0004] BACKGROUND OF DISCLOSURE

[0005] 1. Field of the Disclosure

[0006] The present application relates to the field of communication systems, and more particularly, to a power headroom reporting method and relevant devices.

[0007] 2. Description of the Related Art

[0008] The background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the disclosure, or that any publication specifically or implicitly referenced is prior art.

[0009] In cellular wireless communication systems developed by the Third Generation Partnership Project (3GPP), user equipment (UE) is connected by a wireless link to a radio access network (RAN). The RAN includes a set of base stations (BSs) which provide wireless links to UEs located in cells covered by the base station and an interface to a core network (CN) which provides overall network control. The RAN and CN each conduct respective functions in relation to the overall network. The so-called 4G Long Term Evolution (LTE) system, namely, an Evolved Universal Mobile Telecommunication System Territorial Radio Access Network (E-UTRAN) had been developed for a mobile access network where one or more macro-cells are supported by a base station known as an eNodeB or eNB (evolved NodeB). Evolved from LTE, the so-called 5G or new radio (NR) systems where one or more cells are supported by a base station known as a gNB. Envisioned to succeed the current 5G networks, the 6G cellular system is the forthcoming generation of wireless communication technology.

[0010] Multiple Input Multiple Output (MIMO) significantly increases the capacity of a radio link by employing multiple antennas for both transmission and reception. By equipping the transmitter and receiver with multiple antennas, MIMO enables multiple data signals to be sent and received concurrently over a single radio channel, thereby greatly enhancing spectral efficiency.

[0011] In 3GPP Rel-18 NR MIMO evolution, when twoPHRMode is configured in multiple transmission / reception point (TRP) (mTRP) scenario, the UE needs to report two PHR’s (e.g. Power Headroom Report), one for each TRP, when uplink transmission is scheduled by Single DCI (S-DCI). According to 3GPP specification, a parameter, PCmax, is used to calculate the reported PHR. In that sense, if the UE needs to report two PHR’s, the UE also needs to report to PCmax’s to the network. However, the current PHR MAC CE does not support reporting two PCmax’s.

[0012] As shown below, Table 1 summarizes scenarios of PHR and PCmax reporting, where real PHR means the UE has uplink data to send and PHR reflects the remaining UL power, and virtual PHR means the UE does not have uplink data and uses reference to calculate the remaining UL power.

[0013] Table 1

[0014] FIG. 1 shows the PHR reporting MAC CE in current 3GPP TS 38.321 specification. As shown in FIG. 1, only one PCmax is carried in the MAC CE, although two PHR’s are reported. Clearly, it can only report one pair of {PHR, PCmax}. reporting two PCmax’s is not supported by the current PHR reporting MAC CE.

[0015] SUMMARY

[0016] An object of the present application is to propose a power headroom reporting method and relevant devices, which can solve issues in the relevant art, enhancing power headroom reporting for simultaneous uplink transmission over multiple planes, provide a good communication performance, and / or provide high reliability.

[0017] In a first aspect, some embodiments of the present application provide a power headroom reporting method, performed by a terminal device, including transmitting a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) to a network device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and includes a first set of parameters for a first transmission / reception point (TRP) and a second set of parameters for a second TRP, and wherein the first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP.

[0018] In a second aspect, some embodiments of the present application provide a power headroom reporting method, performed by a network device, including receiving a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) from a terminal device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and includes a first set of parameters for a first transmission / reception point (TRP) and a second set of parameters for a second TRP, and wherein the first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP.

[0019] In a third aspect, some embodiments of the present application provide a terminal device, including a memory; and a processor coupled to the memory, wherein the processor is configured to call and run program instructions stored in the memory, to cause the terminal device to perform the method described in the first aspect.

[0020] In a fourth aspect, some embodiments of the present application provide a network device, including a memory; and a processor coupled to the memory, wherein the processor is configured to call and run program instructions stored in the memory, to cause the network device to perform the method described in the second aspect.

[0021] In a fifth aspect, some embodiments of the present application provide a non-transitory machine- readable storage medium has stored thereon instructions that, when executed by a computer, cause the computer to execute any of the above methods.

[0022] In a sixth aspect, some embodiments of the present application provide a chip includes a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute any of the above methods.

[0023] In a seventh aspect, some embodiments of the present application provide a computer readable storage medium, in which a computer program is stored, causes a computer to execute any of the above methods.

[0024] In an eighth aspect, some embodiments of the present application provide a computer program product includes a computer program, and the computer program causes a computer to execute any of the above methods.

[0025] In a ninth aspect, some embodiments of the present application provide a computer program that causes a computer to execute any of the above methods.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to illustrate the embodiments of the present application or related art more clearly, the following figures will be described in the embodiments are briefly introduced. It is obvious that the drawings are merely some embodiments of the present application, a person having ordinary skill in this field can obtain other figures according to these figures without paying the premise.

[0028] FIG. 1 is a schematic diagram illustrating enhanced single entry PHR for multiple TRP MAC CE in current 3GPP TS 38.321 specification.

[0029] FIG. 2 is a block diagram illustrating a terminal device and a network device in a wireless communication system according to an embodiment of the present application. FIG. 3 is a flowchart of a power headroom reporting method by a terminal device according to an embodiment of the present application.

[0030] FIG. 4 is a schematic diagram illustrating P and R bit based on legacy PHR MAC CE in 3GPP TS 38.321 section 6.1.3.50 and 6.1.3.51.

[0031] FIG. 5 is a schematic diagram illustrating an example of single entry PHR for multiple TRP STx2P MAC CE according to an embodiment of the present application.

[0032] FIG. 6 is a schematic diagram illustrating another example of single entry PHR for multiple TRP STx2P MAC CE according to an embodiment of the present application.

[0033] FIG. 7 is a schematic diagram illustrating an example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8 according to an embodiment of the present application.

[0034] FIG. 8 is a schematic diagram illustrating another example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8 according to an embodiment of the present application.

[0035] FIG. 9 is a schematic diagram illustrating still another example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8 according to an embodiment of the present application.

[0036] FIG. 10 is a schematic diagram illustrating an example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8 according to an embodiment of the present application.

[0037] FIG. 11 is a schematic diagram illustrating another example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8 according to an embodiment of the present application.

[0038] FIG. 12 is a schematic diagram illustrating still another example of enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8 according to an embodiment of the present application.

[0039] FIG. 13 is a flowchart of a power headroom reporting method by a network device according to an embodiment of the present application.

[0040] FIG. 14 is a block diagram of a system for wireless communication according to an embodiment of the present application.

[0041] DETAILED DESCRIPTION OF EMBODIMENTS

[0042] Embodiments of the present application are described in detail with the technical matters, structural features, achieved objects, and effects with reference to the accompanying drawings as follows. Specifically, the terminologies in the embodiments of the present application are merely for describing the purpose of the certain embodiment, but not to limit the disclosure.

[0043] In this document, the symbol should be interpreted to indicate "and / or." A combination such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” or “A, B, and / or C” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any combination may contain one or more members of A, B, or C.

[0044] FIG. 2 illustrates that, in some embodiments, one or more terminal device (e.g., user equipments (UEs))

[0045] 10 and one or more network devices (e.g., base stations or gNBs) 20 in a wireless communication system 30 according to an embodiment of the present application are provided. The wireless communication system 30 includes the one or more terminal devices 10 and one or more network devices 20. The network device 20 may include a first transmission / reception point (TRP) and a second TRP. The one or more terminal devices 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory

[0046] 12 and the transceiver 13. The one or more network devices 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to implement proposed functions, procedures and / or methods described in this description. Layers of radio interface protocol may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled with the processor 11 or 21 and stores a variety of information to operate the processor

[0047] 11 or 21. The transceiver 13 or 23 is operatively coupled with the processor 11 or 21, and the transceiver

[0048] 13 or 23 transmits and / or receives a radio signal. When the wireless communication system 30 complies with the New Radio (NR) standard of the 3rd Generation Partnership Project (3GPP), the next generation core network is a backend serving network system and may include an Access and Mobility Management Function (AMF), User Plane Function (UPF), and a Session Management Function (SMF). In one aspect, the terminal device 10 can include almost any consumer electronic device or appliance that can connect to a radio access network and a core network for the releases of 3GPP and further, such as, but not limited to NR networks.

[0049] The processor 11 or 21 may include application-specific integrated circuit (ASIC), other chipset, logic circuit and / or data processing device. The memory 12 or 22 may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage device. The transceiver 13 or 23 may include baseband circuitry to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The modules can be stored in the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 can be implemented within the processor 11 or 21 or external to the processor 11 or 21 in which case those can be communicatively coupled to the processor 11 or 21 via various means as is known in the art.

[0050] In some embodiments, the processor 11 of the terminal device 10 is configured to execute a power headroom reporting method, which includes transmitting a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) to a network device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and includes a first set of parameters for a first TRP and a second set of parameters for a second TRP, and wherein the first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP. With this method, power headroom reporting for simultaneous uplink transmission over multiple planes can be enhanced.

[0051] In some embodiments, the processor 21 of the network device 20 is configured to execute a power headroom reporting method, which includes receiving a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) from a terminal device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and includes a first set of parameters for a first TRP and a second set of parameters for a second TRP, and wherein the first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP. With this method, power headroom reporting for simultaneous uplink transmission over multiple planes can be enhanced.

[0052] FIG. 3 illustrates a power headroom reporting method 100 by a terminal device 10 according to an embodiment of the present application. In some embodiments, the method 100 includes the following steps.

[0053] In Step 102, the terminal device 10 (e.g., a user equipment (UE)) transmits a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) to the network device 20. The network device 20 may include a first transmission / reception point (TRP) and a second TRP. The terminal device 10 establishes wireless connections with the network device 20. Once the terminal device 10 is connected to the network device 20, the terminal device 10 may transmit uplink data to the first TRP and the second TRP simultaneously. For example, the terminal device 10 may send a first uplink transmission (e.g., PUSCH transmission) to the first TRP, and meanwhile, send a second uplink transmission (e.g., PUSCH transmission) to the second TRP. The first uplink transmission and the second first uplink transmission are simultaneous transmission towards the first TRP and the second TRP, respectively. In addition to the PUSCH, the terminal device may transmit uplink signals (e.g., sounding reference signals (SRS)) to the two TRPs. It is noted that the PHR MAC CE is used for simultaneous transmission with multipanel (STxMP). When there are only two TRPs or two planes, the simultaneous transmission can be called STx2P. The PHR MAC CE includes a first set of parameters for the first TRP and a second set of parameters for the second TRP. The first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP. The first PH and the first PCmax are reported for power control of the first uplink transmission towards the first TRP while the second PH field and the second PCmax field are reported for power control of the second uplink transmission towards the second TRP.

[0054] In comparison to the existing PHR reporting MAC CE which supports only one PCmax reporting, both the first PCmax associated with the first uplink transmission towards the first TRP and the second PCmax associated with the second uplink transmission towards the second TRP are reported in a single PHR reporting MAC CE. This enhances power headroom reporting for simultaneous uplink transmission over multiple planes. In some embodiments, the first set of parameters may further include a first power management (P) parameter and a first maximum permissible exposure (MPE) parameter, and the second set of parameters may further include a second P parameter and a second MPE parameter. The first set of parameters may further include a first V parameter indicating if the first PH for the first TRP is based on real transmission or reference format, and the second set of parameters may further include a second V parameter indicating if the second PH for the second TRP is based on real transmission or reference format. The first set of parameters are power related parameters for the first uplink transmission, and the second set of parameters are power related parameters for the second uplink transmission. To be noted that, the first uplink transmission and the second first uplink transmission are simultaneous transmission towards the first TRP and the second TRP of a cell, respectively.

[0055] In an illustrated example, the PHR MAC CE may be used for the STxMP scheduled by singledownlink control information (S-DCI). In another illustrated example, the PHR MAC CE may be used for the STxMP scheduled by multiple -downlink control information (M-DCI). When there are only two TRPs or two planes, the simultaneous transmission can be called STx2P. In some embodiments, the PHR MAC CE may be a single entry PHR for multiple TRP STx2P MAC CE. In some other embodiments, the PHR MAC CE may be an enhanced multiple entry PHR for multiple TRP STx2P MAC CE. The PHR MAC CE may be an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8. Alternatively, the PHR MAC CE may be an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8. Please refer to the following explanations for better understanding the invention concepts of this application.

[0056] The PHR MAC CE in 3GPP TS 38.321 section 6.1.3.50 and 6.1.3.51 is to support PUSCH repetition based on legacy TCI state framework. While S-DCI STxMP is to support simultaneous PUSCH transmission with either same or different DMRS towards to 2 TRPs under the unified TCI state framework. In short these two features are exclusive with each other in RRC configuration. It means the new PHR MAC CE could be repurposed based on PHR MAC CE in section 6.1.3.50 and 6.1.3.51.

[0057] Another aspect to taken into account is how many R bits are left for further extension. Assuming another pair of {P bit, MPE} is not needed, then there could be 3 R bits e.g. the R bit before the 2ndPH value and 2 R bits before 2ndPCmax value since it needs only 6 bits. But if another pair of {P bit, MPE} is needed, then no R bits is available. This case is illustrated in FIG. 4 when P bit is set 1.

[0058] When 2ndPCmax is introduced, the left 1 R bit together with another 2 bits before 2ndPCmax will be used for 2ndpair of {P bit, MPE} hence no R is available to indicate this revised PHR MAC CE is repurposed. So it is obvious that a new PHR MAC CE e.g. a new extended logical channel identity (eLCID) in MAC subheader is needed for this new MAC CE if 2ndpair of {P bit, MPE} needs to be also reported.

[0059] The pair of {P bit, MPE} is closely linked to the corresponding PCMAX, f.c, because both PCMAX, f,c and MPE will impact the final transmission power. If the PCMAX, f,c should be reported per panel, as a delta part of PC AX, f,c e.g. MPE should be also reported per panel. Therefore, it is proposed that for S-DCI STxMP, 2ndset of {PCmax, P bit, MPE} should be also reported.

[0060] One more point is that for M-DCI STxMP the 2ndpair of {PCmax, P bit, MPE} is needed because the transmission towards different TRP is scheduled by DCI with different coresetPoolIndex, which follows independent power control parameters. Some views in RAN 1 believe that for M-DCI STxMP no new PHR MAC CE is needed because legacy PHR MAC CE e.g. MAC CE in section 6.1.3.8 and 6. 1.3.9 can already be reused for such purpose. The problem for such approach is that MAC layer in network side can’t differentiate the PHR between TRP’s unless the MAC layer check PHY layer about the TRP, where the PHR is received. An easier way is to report these two PH values with its corresponding {PCmax, P bit, MPE} in the same PHR MAC CE. So if the new PHR MAC CE can already report 2ndpair of {PCmax, P bit, MPE}, it can be also applicable for M-DCI STxMP case. For one CC, S-DCI and M-DCI configuration is exclusive with each other hence there is no confusion for them to reuse same PHR MAC CE format.

[0061] Therefore, it is proposed that if the new PHR MAC CE can already report 2ndpair of {PCmax, P bit, MPE}, it can be also applicable for M-DCI STxMP case.

[0062] FIG. 5 depicts an example of PHR MAC CE format with new LCID for single entry PHR. Referring to FIG. 5, {Pl, MPE1 and PCMAX, r.c.o } is 2ndset of parameter together with 2ndPH value, which is associated with the SRS-ResourceSet with a higher srs-ResourceSetld.

[0063] FIG. 6 depicts another example of PHR MAC CE format for single entry PHR. As compared to the PHR MAC CE format of FIG. 5 , different V parameters can be set for the two TRPs, where the V parameter is used for indicating if the PH value for a corresponding TRP is based on real transmission or reference format. The 1stV parameter and the 2ndV parameter may be independent from each other as shown in FIG. 6, while the 1stV parameter and the 2ndV parameter may have the same value as shown in FIG. 5.

[0064] The two PHs together with two PCMAX, f,c,k for the Serving Cell are reported if UE is configured with twoPHRMode.

[0065] The PHR MAC CE format has a fixed size and consists of four octets defined as follows:

[0066] R: Reserved bit, set to 0;

[0067] Power Headroom (PH): This field indicates the power headroom level, where PH 1 is associated with the SRS-ResourceSet with a lower srs-ResourceSetld and PH 2 is associated with the SRS-ResourceSet with a higher srs-ResourceSetld. PH fields for a Serving Cell are included in ascending order. The length of the field is 6 bits.;

[0068] Pk: If mpe-Reporting-FR2 is configured and the Serving Cell operates on FR2, the MAC entity shall set this field to 0 if the applied P-MPR value associated with PC AX, r.c.k, to meet MPE requirements, as specified in TS 38.101-2

[0015] , is less than P-MPR_00 as specified in TS 38.133

[0011] and to 1 otherwise. If mpe-Reporting-FR2 is not configured or the Serving Cell operates on FR1, this field indicates whether power backoff is applied due to power management (as allowed by P-MPRc as specified in TS 38.101-1

[0014] , TS 38.101-2

[0015] , and TS 38.101-3

[0016] ). The MAC entity shall set the Pkfield to 1 if the corresponding PCMAX, field would have had a different value if no power backoff due to power management had been applied; This field indicates if the PH value for the corresponding TRP is based on a real transmission or a reference format. For Type 1 PH, the Vk field set to 0 indicates real transmission on PUSCH and the Vk field set to 1 indicates that a PUSCH reference format is used; This field indicates the configured transmitted power PC AX, (as specified in TS 38.213 [6]) used for calculation of the preceding PH field;

[0069] MPEk: If mpe-Reporting-FR2 is configured, and the Serving Cell operates on FR2, and if the Pk field is set to 1, this field indicates the applied power backoff to meet MPE requirements, as specified in TS 38.101-2

[0015] , The length of the field is 2 bits. If mpe-Reporting-FR2 is not configured, or if the Serving Cell operates on FR1, or if the Pk field is set to 0, R bits are present instead.

[0070] It is noted that for Dual Connectivity (DC), it includes a main cell group (MCG) and a secondary cell group (SCG), the primary cell in MCG is called PCell, the primary cell in SCG is called PScell, and PCell+PScell is called Spcell.

[0071] It is noted that there are different types of UE power headroom reports. A Type 1 UE power headroom PH that is valid for PUSCH transmission occasion i on active UL BWP b of carrier f of serving cell C . A Type 3 UE power headroom PH that is valid for SRS transmission occasion 1 on active UL BWP b of carrier f of serving cell C . A Type 2 UE power headroom PH may be reserved or for other use.

[0072] FIG. 7 illustrates an example of multiple entries PHR for multiple TRP MAC CE to report 2ndPCmax with the highest ServCelllndex of Serving Cell with configured uplink is less than 8. It is noted that Type X shown in FIG. 7 and the following FIGs. 8 and 9 means any one of Type 1, Type 2 and Type 3. Although both PHI and PH2 are indicated as Type X PH, they can be different from each other or the same. For example, both PHI and PH2 are Type 1 PH; or alternatively, PH2 is Type 1 PH and PHI is Type X PH, which means any one of Type 1, Type 2 and Type 3. It is also noted that as shown in FIG. 7 and the following FIGs. 8 are only different labels for PCmax, and the PCmax’s for a same cell may be the same or different from each other. If the PCmax’s for a same cell are the same, a legacy PHR reporting MAC CE may be used to report the PCmax to reduce signaling overhead and obtain more accurate PHR reporting. However, reporting two different PCmax’s for a same cell enhances the ability of power headroom reporting for simultaneous uplink transmission over multiple planes. In addition, the PHR MAC CE carries an independent set of parameters for each cell for power headroom reporting.

[0073] FIG. 8 illustrates another example of multiple entries PHR for multiple TRP MAC CE. As compared to the PHR MAC CE of FIG. 7, different V parameters can be set for the two TRPs, where the V parameter is used for indicating if the PH value for a corresponding TRP is based on real transmission or reference format. The 1stV parameter and the 2ndV parameter may be independent from each other as shown in the V filed and the VI field of FIG. 8, while the 1stV parameter and the 2ndV parameter may have the same value as shown in the V fields of FIG. 7. It is noted that the “Optional” shown in FIG. 8 and the following FIG. 9 means the corresponding 2nd set of parameter {Pl, MPE1, PCMAX, f,c,0 and VI } together with 2nd PH value may not be set. It may not have to set this set of parameter or may be indicated using a legacy or other PHR reporting MAC CE.

[0074] FIG. 9 illustrates still another example of multiple entries PHR for multiple TRP MAC CE. As compared to the PHR MAC CE of FIG. 8, power headroom reporting is for only one TRP of a Spcell, and the power headroom for this TRP is a Type 2 PH. This is the case where the 2nd set of parameter for the Spcell in FIG. 8 is not set or selected since it is optional as shown in FIG. 8.

[0075] The Enhanced Multiple Entry PHR for multiple TRP STx2P MAC CEs are defined as follows:

[0076] Ci: This field indicates the presence of PH field(s) for the Serving Cell with ServCelllndex i as specified in TS 38.331 [5], The Ci field set to 1 indicates that PH field(s) for the Ser ving Cell with ServCelllndex i is reported. The Ci field set to 0 indicates that a PH field for the Serving Cell with ServCelllndex i is not reported;

[0077] R: Reserved bit, set to 0;

[0078] Vk: This field indicates if the PH value is based on a real transmission or a reference format. For Type 1 PH, the Vk field set to 0 indicates real transmission on PUSCH and the Vk field set to 1 indicates that a PUSCH reference format is used. For Type 2 PH, the Vk field set to 0 indicates real transmission on PUCCH and the Vk field set to 1 indicates that a PUCCH reference format is used. For Type 3 PH, the Vk field set to 0 indicates real transmission on SRS and the Vk field set to 1 indicates that an SRS reference format is used. Furthermore, for type 1 PH of a reported Serving Cell not configured with multipanelSchemeSDM or multipanelSchemeSFN, the Vk field set to 0 indicates the presence of the octet containing the associated PCMAX,f,c,k field and the MPEk field, and the Vk field set to 1 indicates that the octet containing the associated PCMAX,f,c,k field and MPEk field is omitted; for Type 2, and Type 3 PH, the Vk field set to 0 indicates the presence of the octet containing the associated PCMAX,f,c,k field and the MPEk field, and the Vk field for the Serving Cell set to 1 indicates that the octet containing the associated PCMAX,f,c,k field and the MPEk field is omitted;

[0079] Power Headroom (PH): This field indicates the power headroom level. For PHR with twoPHRmode, if the Serving cell is configured with multipanelSchemeSFN or multipanelSchemeSDM, PH 1 is associated with the first TCI-State or TCI-UL-State for a real or reference PUSCH transmission and PH 2 is associated with the second TCI-State or TCI-UL-State for a real or reference PUSCH transmission, as specified in TS 38.213 clause 7.7.1 [6]; if the Serving cell is configured with multiple TRP PUSCH repetition, PH 1 is associated with the SRS-ResourceSet with a lower srs-ResourceSetld and PH 2 is associated with the SRS-ResourceSet with a higher srs-ResourceSetld. PH fields for a Serving Cell are included in ascending order. The length of the field is 6 bits.

[0080] Pk: If mpe-Reporting-FR2 is configured and the Serving Cell operates on FR2, the MAC entity shall set this field to 0 if the applied P-MPR value associated with PCMAX,f,c,k, to meet MPE requirements, as specified in TS 38.101-2

[0015] , is less than P-MPR_00 as specified in TS 38.133

[0011] and to 1 otherwise. If mpe-Reporting-FR2 is not configured or the Serving Cell operates on FR1, this field indicates whether power backoff is applied due to power management (as allowed by P-MPRc as specified in TS 38.101-1

[0014] , TS 38.101-2

[0015] , and TS 38.101-3

[0016] ). The MAC entity shall set the Pk field to 1 if the corresponding PCMAX, f,c,k field would have had a different value if no power backoff due to power management had been applied;

[0081] PCMAX, f,c, PCMAX, f,c,k: If present, this field indicates the configured transmitted power PCMAX, f,c,k (as specified in TS 38.213 [6]) for the NR Serving Cell and the PCMAX, c or PCMAX, c (as specified in TS 36.213

[0017] ) for the E-UTRA Serving Cell used for calculation of the preceding PH field. For the SpCell of the other MAC entity and a reported Serving Cell not configured with multipanelSchemeSDM or multipanelSchemeSFN, PCMAX, f,c is presented (i.e., the index k is omitted);

[0082] MPEk: If mpe-Reporting-FR2 is configured, and the Serving Cell operates on FR2, and if the Pk field is set to 1 , this field indicates the applied power backoff to meet MPE requirements, as specified in TS 38.101-2

[0015] . The length ofthe field is 2 bits. If mpe-Reporting-FR2 is not configured, or if the Serving Cell operates on FR1, or if the Pk field is set to 0, R bits are present instead.

[0083] FIG. 10 illustrates an example of multiple entries PHR for multiple TRP MAC CE to report 2ndPCmax with the highest ServCelllndex of Serving Cell with configured uplink is equal to or higher than 8. It is noted that Type X shown in FIG. 10 and the following FIGs. 11 and 12 means any one of Type 1, Type 2 and Type 3. Although both PHI and PH2 are indicated as Type X PH, they can be different from each other or the same. For example, both PHI and PH2 are Type 1 PH; or alternatively, PH2 is Type 1 PH and PHI is Type X PH, which means any one of Type 1, Type 2 and Type 3. It is also noted that as shown in FIG. 10 and the following FIGs. 11 and 12, PCMAX, f,c,o and PCMAX, f,c,i are only different labels for PCmax, and the PCmax’s for a same cell may be the same or different from each other. If the PCmax’s for a same cell are the same, a legacy PHR reporting MAC CE may be used to report the PCmax to reduce signaling overhead and obtain more accurate PHR reporting. However, reporting two different PCmax’s for a same cell enhances the ability of power headroom reporting for simultaneous uplink transmission over multiple planes. In addition, the PHR MAC CE carries an independent set of parameters for each cell for power headroom reporting.

[0084] FIG. 11 illustrates another example of multiple entries PHR for multiple TRP MAC CE. As compared to the PHR MAC CE of FIG. 10, different V parameters can be set for the two TRPs, where the V parameter is used for indicating if the PH value for a corresponding TRP is based on real transmission or reference format. The 1stV parameter and the 2ndV parameter may be independent from each other as shown in the V filed and the VI field of FIG. 11, while the 1stV parameter and the 2ndV parameter may have the same value as shown in the V fields of FIG. 10. It is noted that the “Optional” shown in FIG. 11 and the following FIG. 12 means the corresponding 2nd set of parameter {Pl, MPE1, PCMAX, f,c,0 and VI } together with 2nd PH value may not be set. It may not have to set this set of parameter or may be indicated using a legacy or other PHR reporting MAC CE.

[0085] FIG. 12 illustrates still another example of multiple entries PHR for multiple TRP MAC CE. As compared to the PHR MAC CE of FIG. 11, power headroom reporting is for only one TRP of a Spcell, and the power headroom for this TRP is a Type 2 PH. This is the case where the 2nd set of parameter for the Spcell in FIG. 11 is not set or selected since it is optional as shown in FIG. 11.

[0086] It should be noted that legacy triggering of the proposed PHR reporting MAC CE may be reused. This will not be detailed herein.

[0087] It should be noted that if the legacy PHR reporting MAC CE is reused, then the UE may only report one PCmax for both TRP’s. This PCmax is the sum of PCmax-lfor TRP-1 and PCmax-2 for TRP -2. With this approach, the network cannot distinguish PCmax of the individual TRP, but still can have an overall knowledge of UE uplink power.

[0088] It should be noted that one issue of PHR MAC CE introduced in 3GPP TS 38.321 section 6.1.3.48 and 6.1.3.49 is to introduce per reference signal (RS) MPE, which is only applicable for the unified TCI state framework. Considering RANl ’s feature STxMP is also under the unified TCI state framework, one issue is whether building a new MAC CE also on the PHR MAC CE in section 6.1.3.48 and 6.1.3.49 is appropriate. This may not be appropriate because these two features are not coupled together. In other words, if both features are configured by network, the UE needs to report both PHR introduced in section

[0089] 6.1.3.48 and 6.1.3.49 and the potential new PHR MAC CE. Therefore, if enhanced MPE reporting feature and STxMP are configured by network, the UE may need to report PHR MAC CE in section 6. 1.3.48 and

[0090] 6.1.3.49 and a new PHR MAC CE separately.

[0091] FIG. 13 illustrates a power headroom reporting method 200 by a network device (e.g., a base station) according to an embodiment of the present application. In some embodiments, the method 200 includes the following. In Step 202, the network device receiving a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) from a terminal device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and includes a first set of parameters for a first TRP and a second set of parameters for a second TRP, and wherein the first set of parameters includes a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters includes a second PH and a second PCmax that are associated with the second TRP. With this method, power headroom reporting for simultaneous uplink transmission over multiple planes can be enhanced. Other details of the method 200 may be referred to the method 100 described above and are not repeated herein.

[0092] The embodiment of the present application further provides a computer readable storage medium for storing a computer program. The computer readable storage medium enables a computer to execute corresponding processes implemented in each of the methods of the embodiments of the present application. For brevity, details will not be described herein again.

[0093] The embodiment of the present application further provides a computer program product including computer program instructions. The computer program product enables a computer to execute corresponding processes implemented in each of the methods of the embodiments of the present application. For brevity, details will not be described herein again. The embodiment of the present application further provides a computer program. The computer program enables a computer to execute corresponding processes implemented in each of the methods of the embodiments of the present application. For brevity, details will not be described herein again.

[0094] Commercial interests for some embodiments are as follows. 1. Solving issues in the prior art. 2. enhancing power headroom reporting for simultaneous uplink transmission over multiple planes. 3. Providing a good communication performance. 4. Providing high reliability. Some embodiments of the present application are used by 5G-NR chipset vendors, V2X communication system development vendors, automakers including cars, trains, trucks, buses, bicycles, moto-bikes, helmets, and etc., drones (unmanned aerial vehicles), smartphone makers, communication devices for public safety use, AR / VR device maker for example gaming, conference / seminar, education purposes. The deployment scenarios include, but not limited to, indoor hotspot, dense urban, urban micro, urban macro, rural, factor hall, and indoor D2D scenarios. Some embodiments of the present application are a combination of “techniques / processes” that can be adopted in 3GPP specification to create an end product. Some embodiments of the present application could be adopted in 5G NR licensed and non-licensed or shared spectrum communications. Some embodiments of the present application propose technical mechanisms. The present example embodiment is applicable to NR in unlicensed spectrum (NR-U). The present application can be applied to other mobile networks, in particular to mobile network of any further generation cellular network technology (6G, etc.).

[0095] FIG. 14 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present application. Embodiments described herein may be implemented into the system using any suitably configured hardware and / or software. FIG. 14 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory / storage 740, a display 750, a camera 760, a sensor 770, and an input / output (I / O) interface 780, coupled with each other at least as illustrated. The application circuitry 730 may include a circuitry such as, but not limited to, one or more single-core or multi-core processors. The processors may include any combination of general- purpose processors and dedicated processors, such as graphics processors, application processors. The processors may be coupled with the memory / storage and configured to execute instructions stored in the memory / storage to enable various applications and / or operating systems running on the system.

[0096] The baseband circuitry 720 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processors may include a baseband processor. The baseband circuitry may handle various radio control functions that enables communication with one or more radio networks via the RF circuitry. The radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, the baseband circuitry may provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communication with an evolved universal terrestrial radio access network (EUTRAN), 5G NR (New Radio) network, and / or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN). Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.

[0097] In various embodiments, the baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered as being in a baseband frequency. For example, in some embodiments, baseband circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency. The RF circuitry 710 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network. In various embodiments, the RF circuitry 710 may include circuitry to operate with signals that are not strictly considered as being in a radio frequency. For example, in some embodiments, RF circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.

[0098] In various embodiments, the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to the user equipment, eNB, or gNB may be embodied in whole or in part in one or more of the RF circuitry, the baseband circuitry, and / or the application circuitry. As used herein, “circuitry” may refer to, be part of, or include an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and / or a memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and / or other suitable hardware components that provide the described functionality. In some embodiments, the electronic device circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules. In some embodiments, some or all of the constituent components of the baseband circuitry, the application circuitry, and / or the memory / storage may be implemented together on a system on a chip (SOC). The memory / storage 740 may be used to load and store data and / or instructions, for example, for system. The memory / storage for one embodiment may include any combination of suitable volatile memory, such as dynamic random access memory (DRAM), and / or non-volatile memory, such as flash memory.

[0099] In various embodiments, the I / O interface 780 may include one or more user interfaces designed to enable user interaction with the system and / or peripheral component interfaces designed to enable peripheral component interaction with the system. User interfaces may include, but are not limited to a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc. Peripheral component interfaces may include, but are not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power supply interface. In various embodiments, the sensor 770 may include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, the sensors may include, but are not limited to, a gyro sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of, or interact with, the baseband circuitry and / or RF circuitry to communicate with components of a positioning network, e.g., a global positioning system (GPS) satellite. In various embodiments, the display 750 may include a display, such as a liquid crystal display and a touch screen display. In various embodiments, the system 700 may be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, an AR / VR glasses, etc. In various embodiments, system may have more or less components, and / or different architectures. Where appropriate, methods described herein may be implemented as a computer program. The computer program may be stored on a storage medium, such as a non-transitory storage medium.

[0100] A person having ordinary skill in the art understands that each of the units, algorithm, and steps described and disclosed in the embodiments of the present application are realized using electronic hardware or combinations of software for computers and electronic hardware. Whether the functions run in hardware or software depends on the condition of application and design requirement for a technical plan. A person having ordinary skill in the art can use different ways to realize the function for each specific application while such realizations should not go beyond the scope of the present application. It is understood by a person having ordinary skill in the art that he / she can refer to the working processes of the system, device, and unit in the above-mentioned embodiment since the working processes of the above- mentioned system, device, and unit are basically the same. For easy description and simplicity, these working processes will not be detailed.

[0101] It is understood that the disclosed system, device, and method in the embodiments of the present application can be realized with other ways. The above-mentioned embodiments are exemplary only. The division of the units is merely based on logical functions while other divisions exist in realization. It is possible that a plurality of units or components are combined or integrated in another system. It is also possible that some characteristics are omitted or skipped. On the other hand, the displayed or discussed mutual coupling, direct coupling, or communicative coupling operate through some ports, devices, or units whether indirectly or communicatively by ways of electrical, mechanical, or other kinds of forms.

[0102] The units as separating components for explanation are or are not physically separated. The units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments. Moreover, each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units.

[0103] If the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical plan proposed by the present application can be essentially or partially realized as the form of a software product. Or, one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product. The software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present application. The storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a floppy disk, or other kinds of media capable of storing program codes.

[0104] While the present application has been described in connection with what is considered the most practical and preferred embodiments, it is understood that the present application is not limited to the disclosed embodiments but is intended to cover various arrangements made without departing from the scope of the broadest interpretation of the appended claims.

Claims

What is claimed is:

1. A power headroom reporting method, performed by a terminal device, comprising: transmitting a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) to a network device, wherein the PHR MAC CE is used for multiple TRP simultaneous transmission with multi-panel (STxMP) and comprises a first set of parameters for a first transmission / reception point (TRP) and a second set of parameters for a second TRP, and wherein the first set of parameters comprises a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters comprises a second PH and a second PCmax that are associated with the second TRP.

2. The method of claim 1, wherein the first set of parameters further comprises a first power management (P) parameter and a first maximum permissible exposure (MPE) parameter, and the second set of parameters further comprises a second P parameter and a second MPE parameter.

3. The method of claim 2, wherein the first set of parameters further comprises a first V parameter indicating if the first PH for the first TRP is based on real transmission or reference format, and the second set of parameters further comprises a second V parameter indicating if the second PH for the second TRP is based on real transmission or reference format.

4. The method of claim 3 , wherein the first V parameter and the second V parameter have a same value .

5. The method of claim 3, wherein the first V parameter and the second V parameter are independent from each other.

6. The method of any of claims 1 to 5, wherein the first set of parameters and the second set of parameters are parameters based on Type 1 PHR and are associated with the first TRP and the second TRP that are of a PCell, respectively.

7. The method of any of claims 1 to 6, wherein the first PCmax in the first set of parameters and the second PCmax in the second set of parameters are different values.

8. The method of any of claims 1 to 7, wherein the PHR MAC CE is used for the STxMP scheduled by single-downlink control information (S-DCI).

9. The method of any of claims 1 to 7, wherein the PHR MAC CE is used for the STxMP scheduled by multiple-downlink control information (M-DCI).

10. The method of any of claims 1 to 9, wherein the PHR MAC CE is associated with an extended logical channel identity (eLCID) value in a MAC subheader.

11. The method of any of claims 1 to 10, wherein the second set of parameters is associated with a sounding reference signal (SRS) resource set with a higher SRS resource set identity (ID) than that of the first set of parameters.

12. The method of any of claims 1 to 11, wherein the PHR MAC CE is a single entry PHR for multiple TRP STx2P MAC CE.

13. The method of any of claims 1 to 11, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE.

14. The method of claim 13, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8.

15. The method of claim 13, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8.

16. The method of claim 14 or 15, wherein the first set of parameters and the second set of parameters are associated with the first TRP and the second TRP that are of a n-th serving cell, respectively, where n is a positive integer greater than or equal to 1.

17. The method of claim 16, wherein the first PH in the first set of parameters is a Type X PH, and the second PH in the second set of parameters is a Type 1 PH.

18. The method of any of claims 13 to 17, wherein the PHR MAC CE is configured to report power headroom for only one TRP of a Spcell, and the power headroom for the TRP is a Type 2 PH.

19. The method of any of claims 13 to 17, wherein the PHR MAC CE carries an independent set of parameters for each cell for power headroom reporting.

20. A power headroom reporting method, performed by a network device, comprising: receiving a power headroom report (PHR) with a PHR medium access control (MAC) control element (CE) from a terminal device, wherein the PHR MAC CE is used for multiple TRP simultaneoustransmission with multi-panel (STxMP) and comprises a first set of parameters for a first transmission / reception point (TRP) and a second set of parameters for a second TRP, and wherein the first set of parameters comprises a first power headroom (PH) and a first maximum output power (PCmax) that are associated with the first TRP, and the second set of parameters comprises a second PH and a second PCmax that are associated with the second TRP.

21. The method of claim 20, wherein the first set of parameters further comprises a first power management (P) parameter and a first maximum permissible exposure (MPE) parameter, and the second set of parameters further comprises a second P parameter and a second MPE parameter.

22. The method of claim 21, wherein the first set of parameters further comprises a first V parameter indicating if the first PH for the first TRP is based on real transmission or reference format, and the second set of parameters further comprises a second V parameter indicating if the second PH for the second TRP is based on real transmission or reference format.

23. The method of claim 22, wherein the first V parameter and the second V parameter have a same value.

24. The method of claim 22, wherein the first V parameter and the second V parameter are independent from each other.

25. The method of any of claims 20 to 24, wherein the first set of parameters and the second set of parameters are parameters based on Type 1 PHR and are associated with the first TRP and the second TRP that are of a PCell, respectively.

26. The method of any of claims 20 to 25, wherein the first PCmax in the first set of parameters and the second PCmax in the second set of parameters are different values.

27. The method of any of claims 20 to 26, wherein the PHR MAC CE is used for the STxMP scheduled by single-downlink control information (S-DCI).

28. The method of any of claims 20 to 26, wherein the PHR MAC CE is used for the STxMP scheduled by multiple-downlink control information (M-DCI).

29. The method of any of claims 20 to 28, wherein the PHR MAC CE is associated with an extended logical channel identity (eLCID) value in a MAC subheader.

30. The method of any of claims 20 to 29, wherein the second set of parameters is associated with a sounding reference signal (SRS) resource set with a higher SRS resource set identity (ID) than that of the first set of parameters.

31. The method of any of claims 20 to 30, wherein the PHR MAC CE is a single entry PHR for multiple TRP STx2P MAC CE.

32. The method of any of claims 20 to 30, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE.

33. The method of claim 32, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is less than 8.

34. The method of claim 32, wherein the PHR MAC CE is an enhanced multiple entry PHR for multiple TRP STx2P MAC CE with a highest serving cell index of serving cell with configured uplink is equal to or higher than 8.

35. The method of claim 33 or 34, wherein the first set of parameters and the second set of parameters are associated with the first TRP and the second TRP that are of a n-th serving cell, respectively, where n is a positive integer greater than or equal to 1.

36. The method of claim 35, wherein the first PH in the first set of parameters is a Type X PH, and the second PH in the second set of parameters is a Type 1 PH.

37. The method of any of claims 32 to 36, wherein the PHR MAC CE is configured to report power headroom for only one TRP of a Spcell, and the power headroom for the TRP is a Type 2 PH.

38. The method of any of claims 32 to 36, wherein the PHR MAC CE carries an independent set of parameters for each cell for power headroom reporting.

39. A terminal device, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to call and run program instructions stored in the memory, to cause the terminal device to perform the method of any of claims 1 to 19.

40. A network device, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to call and run program instructions stored in the memory, to cause the network device to perform the method of any of claims 20 to 38.

41. A non-transitory machine-readable storage medium having stored thereon instructions that, when executed by a computer, cause the computer to execute the method of any one of claims 1 to 38.

42. A chip, comprising: a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute the method of any one of claims 1 to 38.

43. A computer readable storage medium, in which a computer program is stored, wherein the computer program causes a computer to execute the method of any one of claims 1 to 38.

44. A computer program product, comprising a computer program, wherein the computer program causes a computer to execute the method of any one of claims 1 to 38.

45. A computer program, wherein the computer program causes a computer to execute the method of any one of claims 1 to 38.

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