Communication method, communication device, and communication system

Abstract

The present disclosure relates to the technical field of communications. Provided are a communication method, a communication device, and a communication system. The method comprises: for a terminal that supports a unified TCI state configuration and that is configured to be in a joint TCI state mode, first information sent by a network device can be received, and a first configuration is updated on the basis of the first information, the first configuration being used for determining a PL offset corresponding to a UL-only TRP. By applying the solution put forth in the embodiments of the present disclosure, updating of a PL offset corresponding to a UL-only TRP can be achieved.

Description

Communication method, communication device and communication system TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and in particular to a communication method, a communication device and a communication system. BACKGROUND

[0002] In order to improve the coverage of the cell edge and provide more balanced service quality in the service area, multi-point cooperation is still an important technical means in the New Radio (NR) system. From the perspective of network morphology, network deployment in the manner of a large number of distributed access points + baseband centralized processing will be more conducive to providing balanced user experience rate, and significantly reducing the latency and signaling overhead caused by handover.

[0003] SUMMARY

[0004] The present disclosure provides a communication method, a communication device and a communication system. For a terminal supporting unified TCI state configuration and configured in a joint TCI state mode, the path loss offset corresponding to an uplink-only (UL-only) transmission and receiving point (TRP) can be updated.

[0005] A first aspect embodiment of the present disclosure provides a communication method, executed by a terminal supporting unified TCI state configuration and configured in a joint TCI state mode, comprising: receiving first information sent by a network device, the first information comprising information indicating a joint TCI state supporting multi-transmission and receiving point (M-TRP) transmission; updating a first configuration according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0006] A second aspect embodiment of the present disclosure provides a communication method, executed by a network device, comprising: sending first information to a terminal, the terminal supporting unified TCI state configuration and configured in a joint TCI state mode; wherein the first information comprises information indicating a joint TCI state supporting M-TRP transmission, and the first information is used to update a first configuration, and the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0007] A third aspect embodiment of the present disclosure provides a communication method, comprising: a network device sending first information to a terminal, the first information comprising information indicating a joint TCI state supporting M-TRP transmission, the terminal supporting unified TCI state configuration and being configured as a joint TCI state mode; the terminal receiving the first information and updating a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0008] A fourth aspect embodiment of the present disclosure provides a terminal supporting unified TCI state configuration and being configured as a joint TCI state mode, comprising: a transceiver configured to receive first information sent by a network device, the first information comprising information indicating a joint TCI state supporting M-TRP transmission; and a processor configured to update a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0009] A fifth aspect embodiment of the present disclosure provides a network device, comprising: a transceiver configured to send first information to a terminal, the terminal supporting unified TCI state configuration and being configured as a joint TCI state mode; wherein the first information comprises information indicating a joint TCI state supporting M-TRP transmission, the first information being used to update a first configuration, and the first configuration being used to determine a PL offset corresponding to an UL-only TRP.

[0010] A sixth aspect embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is configured to execute the method of the first aspect embodiment, or is configured to execute the method of the second aspect embodiment.

[0011] A seventh aspect embodiment of the present disclosure provides a communication system, comprising: a terminal and a network device; the terminal executes the method of the first aspect embodiment, and the network device executes the method of the second aspect embodiment.

[0012] An eighth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor to implement the method of the first aspect embodiment, or the method of the second aspect embodiment.

[0013] A ninth aspect of the present disclosure provides a computer program product, wherein the computer program product stores a computer program; and the computer program, when executed by a processor, enables the method according to the first aspect or the second aspect to be implemented.

[0014] Additional aspects and advantages of the present disclosure will be made apparent from the following description of embodiments, which will be given by way of example only. BRIEF DESCRIPTION OF DRAWINGS

[0015] Additional aspects and advantages of the present disclosure will be made apparent from the following description of embodiments, which will be given by way of example only.

[0016] FIG. 1 is a schematic diagram of an example of a MAC CE;

[0017] FIG. 2 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure;

[0018] FIG. 3 is a schematic diagram of a communication method according to an embodiment of the present disclosure;

[0019] FIG. 4 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0020] FIG. 5 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0021] FIG. 6 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0022] FIG. 7 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0023] FIG. 8 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0024] FIG. 9 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0025] FIG. 10 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0026] FIG. 11 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0027] FIG. 12 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0028] FIG. 13 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0029] FIG. 14 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0030] FIG. 15 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0031] FIG. 16 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0032] FIG. 17 is a flow diagram of a communication method according to an embodiment of the present disclosure;

[0033] FIG. 18 is a flow diagram of a communication method according to an embodiment of the present disclosure;

[0034] FIG. 19 is a block diagram of a terminal according to an embodiment of the present disclosure;

[0035] FIG. 20 is a block diagram of a network device according to an embodiment of the present disclosure;

[0036] FIG. 21 is a structural diagram of a communication device according to an embodiment of the present disclosure;

[0037] FIG. 22 is a structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, in which the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below with reference to the drawings are examples for explaining the present disclosure and are not intended to be limiting of the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0039] For ease of understanding, first introduce the terms related to the embodiments of the present disclosure.

[0040] 1. Transmission and Receiving Point (TRP)

[0041] With the increase of frequency bands, from the perspective of ensuring network coverage, relatively dense access points also need to be deployed. In the high frequency band, with the increase of the integration of active antenna devices, it will be more inclined to use modular active antenna arrays. The antenna array of each TRP can be divided into several relatively independent antenna panels, so the shape and port number of the entire array surface can be flexibly adjusted according to the deployment scene and business needs. The antenna panels or TRPs can also be connected by optical fibers for more flexible distributed deployment. In the millimeter wave band, with the decrease of wavelength, the blocking effect of obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of link connection, the cooperation between multiple TRPs or panels can also be used to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0042] According to the mapping relationship of the sending signal stream to multiple TRPs / panels, the multi-point cooperative transmission technology can be divided into coherent and non-coherent transmission. Among them, in the coherent transmission, each data layer is mapped to multiple TRPs / panels through a weighting vector. In the non-coherent transmission, each data stream is only mapped to part of the TRP / panel. The coherent transmission has higher requirements for the synchronization between the transmission points and the transmission capacity of the backhaul link, and is more sensitive to many non-ideal factors in the actual deployment conditions. In contrast, the non-coherent transmission is less affected by the above factors, so it is the key consideration scheme of the multi-point transmission technology. The uplink PUSCH transmission transmits to multiple base station TRPs, mainly standardizes the cooperative transmission under the time division multiplexing (TDM) transmission mode, and transmits the same information of the physical uplink shared channel (PUSCH) to different TRPs of the base station through the time domain transmission occasion (TO) time-sharing. This method has lower requirements for terminal capability and does not require the ability to support simultaneous transmission beams, and the transmission delay is larger.

[0043] For uplink, the actual channel of the PUSCH channel facing different TRPs may have a large difference in spatial characteristics, so it is considered that the Doppler shift characteristics (QCL-D) of the quasi co-location of the PUSCH channel in different transmission directions are different.

[0044] In the enhanced target, it is mainly hoped that the simultaneous cooperative transmission to multiple base station TRPs through multiple antenna panels (PANEL) is used to increase the transmission reliability and throughput, and can effectively reduce the transmission delay under multi-TRP, but requires the terminal to have the ability to simultaneously transmit multiple beams. The transmission of PUSCH can be based on single physical downlink control channel (PDCCH) S-DCI (single DCI) scheduling multi-PANEL / TRP transmission, or based on different PDCCH M-DCI (multi-DCI) scheduling multi-PANEL / TRP transmission.

[0045] In actual deployment, the link between the transmission points may be a relatively ideal backhaul link supporting high throughput and very low backhaul delay, or a non-ideal backhaul link using xDSL, microwave, and relay, etc. The non-coherent joint transmission (NC-JT) transmission scheme based on M-DCI is initially introduced mainly for non-ideal backhaul conditions, but this scheme can also be used for ideal backhaul conditions.

[0046] A terminal is generally configured with multiple physical panels, and different panels can have different capabilities, such as different numbers of sounding reference signal (SRS) ports, and different maximum numbers of supported data transmission layers, such as one panel supporting a maximum of 2 layers of transmission and another panel supporting a maximum of 4 layers of transmission. A network scheduler determines whether a terminal is currently suitable for simultaneous uplink transmission of multiple panels, and if the terminal is currently suitable for simultaneous uplink transmission of multiple panels and is scheduled, the network directly or indirectly indicates relevant transmission parameters, including terminal specific beam indication information, the number of data layers used for transmission, the allocation of demodulation reference signal (DMRS) ports, and the indication information of precoding, etc.

[0047] 2. Transmission configuration indication state (TCI state)

[0048] A unified TCI state is used to indicate a downlink TCI state or joint TCI state for a terminal to determine a downlink transmission beam, and an uplink TCI state or joint TCI state for indicating an uplink beam. Here, the downlink beam refers to a beam of a physical downlink shared channel (PDSCH) and all / part of PDCCH in a carrier component (CC) specific to a user, and the uplink beam refers to an uplink transmission spatial filter of a PUSCH based on dynamic authorization / configurable authorization and all or part of dedicated PUCCH resources of a CC.

[0049] Unified TCI state enhancement: enhanced for M-TRP scenarios, and extended based on the defined TCI state indication method. Up to 2 sets of uplink and downlink TCI state information corresponding to cooperating TRPs can be indicated simultaneously through TCI state code points in DCI.

[0050] A MAC-CE introduced in the protocol TS 38.321 is used for activation and deactivation of unified TCI state. Joint TCI state mode and separate TCI state mode configurations are supported. The following MAC-CE is introduced for joint TCI state mode, and is a unified TCI state MAC CE for joint TCI state mode, i.e., joint TCI state MAC CE. As shown in FIG. 1, the MAC-CE is used for joint TCI state and is identified in the MAC subheader with eLCID specified in Table 6.2.1-1b. It has a variable length and contains the following fields:

[0051] Serving Cell ID: This field indicates the identity of the serving cell to which the MAC CE applies. The field is 5 bits long. If the indicated serving cell is configured as part of the simultaneous U-TCI update list 1, simultaneous U-TCI update list 2, simultaneous U-TCI update list 3, or simultaneous U-TCI update list 4 as defined in TS 38.331 [5], the MAC CE applies to all serving cells in these lists, respectively;

[0052] Downlink BWP ID: This field indicates the downlink BWP to which the MAC CE applies according to the codepoint of the DCI bandwidth part indication field as specified in TS 38.212 [9]. The BWP ID field is 2 bits long;

[0053] Fi,j: This field indicates whether the j-th joint TCI state is contained in the TCI state ID field related to the codepoint i of the DCI transmission configuration indication field, where j = 1, 2. If the Fi,j field is set to 1, it indicates that the j-th joint TCI state is present for the codepoint i. If the Fi,j field is set to 0, it indicates that the j-th joint TCI state is not present for the codepoint i. Which codepoint a TCI state maps to is determined by its ordinal position in all TCI state ID fields;

[0054] TCI State ID: This field indicates the TCI state ID of 7-bit length specified by TCI-StateId as defined in TS 38.331 [5]. The maximum number of TCI states that can be activated is 16;

[0055] R: Reserved bit, set to 0.

[0056] 3. Uplink only (UL-only)

[0057] In multi-TRP transmission, future research directions will continue to enhance uplink transmission. The main research is on the multi-TRP deployment scenario of downlink S-TRP / uplink M-TRP. By deploying multiple uplink receiving points, the coverage and throughput of uplink can be further improved with lower network deployment cost, and complex network planning and downlink interference management coordination problems can be avoided.

[0058] Asymmetric multi-TRP transmission (downlink single-TRP / uplink multi-TRP) is implemented by deploying heterogeneous networks to improve uplink (UL) coverage and throughput. Due to the different rated powers of macro gNB and micro node UL TRP, a terminal can receive downlink (DL) transmission from the macro gNB, but transmit UL to the macro gNB or non-co-located micro node UL TRP in order to maximize UL throughput. As an option to further reduce energy consumption, the micro node can reduce or even turn off DL transmission, unlike the Small Cell, which only serves as an uplink receiver. The specific TCI state indication method depends on the results of beam determination and is configured by the network to the terminal. The current protocol can only support configuring the current beam indication as one of the joint TCI state mode and the independent TCI state mode. The joint transmission configuration indication state (joint TCI state) is only applied to the Sub-6GHz frequency band (FR1); the independent transmission configuration indication state (separate TCI state) can be applied to the FR1 + millimeter wave (mmWave) frequency band (FR2).

[0059] For terminals supporting unified TCI state configuration, the network device configures unified transmission configuration indication unified TCI mode. For FR1: up to two joint TCI states or {one downlink transmission configuration indication state (DL TCI state) + up to two uplink transmission configuration indication states (UL TCI state)} can be applied; for FR2: {one DL TCI state + up to two UL TCI states} can be applied.

[0060] In the UL-only scenario, a cell includes one macro gNB and multiple UL-only TRP reception points. In order for the terminal to perform downlink S-TRP / uplink M-TRP transmission, the base station needs to perform uplink / downlink beam management procedures and configure / indicate beam information for data / signal transmission to the terminal. The M-TRP transmission in the uplink needs to be completed in cooperation between the macro gNB and the UL-only TRP, or between different UL-only TRPs.

[0061] Embodiments of the present disclosure provide a communication method, a communication device, and a communication system.

[0062] In a first aspect, the embodiments of the present disclosure provide a communication method, performed by a terminal supporting unified TCI state configuration and configured in a joint TCI state mode, the method comprising: receiving first information sent by a network device, the first information comprising information indicating a joint TCI state supporting M-TRP transmission; updating a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0063] By applying the technical solutions of the present disclosure, for a terminal supporting unified TCI state configuration and configured in a joint TCI state mode, the PL offset corresponding to an UL-only TRP can be updated.

[0064] In combination with some embodiments of the first aspect, at least one of the following comprises the first configuration:

[0065] a first joint transmission configuration indication state (TCI state), the first joint TCI state being configured through radio resource control (RRC) signaling;

[0066] a second joint TCI state, the second joint TCI state being activated through a medium access control (MAC) control element (CE) indication;

[0067] a third joint TCI state, the third joint TCI state being applied through a downlink control information (DCI) indication or a joint indication through DCI and RRC signaling.

[0068] In combination with some embodiments of the first aspect, the first information comprises a first MAC CE.

[0069] In combination with some embodiments of the first aspect, an indication field in the first MAC CE is used to indicate an updated value of the PL offset.

[0070] In combination with some embodiments of the first aspect, the number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

[0071] In combination with some embodiments of the first aspect, the indication step comprises one of the following:

[0072] 1 dB; 2 dB; 4 dB.

[0073] In some embodiments of the first aspect, at least 5 bits in the first MAC CE are used to indicate a value of the updated value; or,

[0074] 1 bit in the first MAC CE is used to indicate a sign of the updated value, and 4 least significant bits (LSB) in the first MAC CE are used to indicate an absolute value of the updated value; or,

[0075] at least 5 bits in the first MAC CE are used to indicate a value of the updated value, most significant bits (MSB) in the first MAC CE are used to indicate a sign of the updated value, and LSB in the first MAC CE are used to indicate an absolute value of the updated value.

[0076] In some embodiments of the first aspect, the first MAC CE has at least one first indication field, which is used to indicate whether a TCI codepoint corresponds to at least one joint TCI state that needs to be updated for PL offset.

[0077] In some embodiments of the first aspect, a signaling length of the first MAC CE is determined by the first indication field, which is determined by one of the following:

[0078] a first number, which is used to represent a number of TCI state codepoints;

[0079] a second number, which is used to represent a number of joint TCI states corresponding to the TCI state codepoint that need to be updated for PL offset.

[0080] In some embodiments of the first aspect, the first indication field is a first value, which is used to determine that a TCI codepoint contains a joint TCI state, and the joint TCI state contained in the TCI codepoint corresponds to PL offset that needs to be updated;

[0081] the first indication field is a second value, which is used to determine that the TCI codepoint does not contain a joint TCI state; or,

[0082] the first indication field is a second value, which is used to determine that a TCI codepoint contains a joint TCI state, and the joint TCI state contained in the TCI codepoint corresponds to PL offset that does not need to be updated;

[0083] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0084] With reference to some embodiments of the first aspect, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the PL offset update value corresponding to the joint TCI state is a positive value or a negative value.

[0085] With reference to some embodiments of the first aspect, the indication field corresponding to the update value in the first MAC CE includes at least one of the following:

[0086] 1 bit of the second indication field, 3 reserved bits, and 4-bit indication field, and the 4-bit indication field is used to indicate the absolute value of the update value.

[0087] 3 reserved bits and 5-bit indication field, and the 5-bit indication field is used to indicate the numerical value of the update value.

[0088] 1 bit of the second indication field and 7-bit indication field, and the 7-bit indication field is used to indicate the numerical value of the update value.

[0089] 8-bit indication field, and the 8-bit indication field is used to indicate the numerical value of the update value.

[0090] 4-bit indication field, and the 4-bit indication field is used to indicate the absolute value of the update value.

[0091] In a second aspect, the embodiments of the present disclosure provide a communication method, executed by a network device, the method comprising: sending first information to a terminal, the first information comprising information indicating a joint TCI state supporting M-TRP transmission, the terminal supporting unified TCI state configuration and being configured in a joint TCI state mode; wherein the first information is used to update a first configuration, and the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0092] By applying the technical solutions of the present disclosure, for a terminal supporting unified TCI state configuration and being configured in a joint TCI state mode, the PL offset corresponding to an UL-only TRP can be updated.

[0093] With reference to some embodiments of the second aspect, the first configuration includes at least one of the following:

[0094] The first joint TCI state is configured through RRC signaling;

[0095] a second joint TCI state, the second joint TCI state being activated by a MAC CE indication;

[0096] a third joint TCI state, the third joint TCI state being applied by a DCI indication, or being applied by a joint indication of DCI and RRC signaling.

[0097] In some embodiments of the second aspect, the first information comprises a first MAC CE.

[0098] In some embodiments of the second aspect, an indication field in the first MAC CE is used to indicate an updated value of the PL offset.

[0099] In some embodiments of the second aspect, a number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

[0100] In some embodiments of the second aspect, the indication step comprises one of:

[0101] 1 dB; 2 dB; 4 dB.

[0102] In some embodiments of the second aspect, at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value; or,

[0103] 1 bit of an indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and LSB 4 bits of an indication field are used to indicate an absolute value of the updated value; or,

[0104] at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value, MSB of an indication field is used to indicate a positive or negative value of the updated value, and LSB of an indication field is used to indicate an absolute value of the updated value.

[0105] In some embodiments of the second aspect, the first MAC CE has at least one first indication field, the first indication field being used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is subject to PL offset update.

[0106] In some embodiments of the second aspect, a signaling length of the first MAC CE is determined by the first indication field, the first indication field being determined by one of:

[0107] a first number, the first number being used to represent a number of TCI state codepoints;

[0108] a second number, the second number being used to represent a number of TCI state codepoints corresponding to joint TCI states that need to update the PL offset.

[0109] In some embodiments of the second aspect, the first indication field is of a first value to determine that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated.

[0110] In some embodiments of the second aspect, the first indication field is of a second value to determine that the TCI codepoint does not contain a joint TCI state.

[0111] In some embodiments of the second aspect, the first indication field is of a second value to determine that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0112] In some embodiments of the second aspect, the first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0113] In some embodiments of the second aspect, the first MAC CE has at least one second indication field, the second indication field being used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

[0114] In some embodiments of the second aspect, the indication field corresponding to the update value in the first MAC CE comprises at least one of the following:

[0115] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field, the 4-bit indication field being used to indicate an absolute value of the update value.

[0116] 3 reserved bits and a 5-bit indication field, the 5-bit indication field being used to indicate a numerical value of the update value.

[0117] 1 bit of the second indication field and a 7-bit indication field, the 7-bit indication field being used to indicate a numerical value of the update value.

[0118] 8-bit indication field, the 8-bit indication field being used to indicate a numerical value of the update value.

[0119] 4-bit indication field, the 4-bit indication field being used to indicate an absolute value of the update value.

[0120] In a third aspect, the embodiments of the present disclosure provide a communication method, comprising: a network device sending first information to a terminal, the first information comprising information indicating a joint TCI state supporting M-TRP transmission, the terminal supporting unified TCI state configuration and being configured in a joint TCI state mode; the terminal receiving the first information and updating a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0121] In a fourth aspect, the embodiments of the present disclosure provide a terminal supporting unified TCI state configuration and being configured in a joint TCI state mode, comprising: a transceiver configured to receive first information sent by a network device, the first information comprising information indicating a joint TCI state supporting M-TRP transmission; and a processor configured to update a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0122] In some embodiments of the fourth aspect, the first configuration comprises at least one of:

[0123] a first joint TCI state, the first joint TCI state being configured through RRC signaling;

[0124] a second joint TCI state, the second joint TCI state being activated through MAC CE indication;

[0125] a third joint TCI state, the third joint TCI state being applied through DCI indication or being applied through joint indication of DCI and RRC signaling.

[0126] In some embodiments of the fourth aspect, the first information comprises a first MAC CE.

[0127] In some embodiments of the fourth aspect, an indication field in the first MAC CE is used to indicate an updated value of the PL offset.

[0128] In some embodiments of the fourth aspect, a number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

[0129] In some embodiments of the fourth aspect, the indication step comprises one of:

[0130] 1 dB; 2 dB; 4 dB.

[0131] In some embodiments in combination with the fourth aspect, at least 5 bits indication field in the first MAC CE is used to indicate the numerical value of the updated value; or,

[0132] 1 bit indication field in the first MAC CE is used to indicate the positive or negative value of the updated value, and 4 bits LSB indication field is used to indicate the absolute value of the updated value; or,

[0133] At least 5 bits indication field in the first MAC CE is used to indicate the numerical value of the updated value, and MSB indication field is used to indicate the positive or negative value of the updated value, and LSB indication field is used to indicate the absolute value of the updated value.

[0134] In some embodiments in combination with the fourth aspect, the first MAC CE has at least one first indication field, which is used to indicate whether the at least one joint TCI state corresponding to the TCI codepoint is updated with the PL offset.

[0135] In some embodiments in combination with the fourth aspect, the signaling length of the first MAC CE is determined by the first indication field, which is determined by one of the following:

[0136] A first number, which is used to represent the number of TCI state codepoints;

[0137] A second number, which is used to represent the number of joint TCI states corresponding to the TCI state codepoint that need to update the PL offset.

[0138] In some embodiments in combination with the fourth aspect, the first indication field is a first value, which is used to determine that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated;

[0139] The first indication field is a second value, which is used to determine that the TCI codepoint does not contain joint TCI state; or,

[0140] The first indication field is a second value, which is used to determine that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated;

[0141] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0142] In some embodiments of the fourth aspect, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the PL offset update value corresponding to the joint TCI state is a positive value or a negative value.

[0143] In some embodiments of the fourth aspect, the indication field corresponding to the update value in the first MAC CE includes at least one of the following:

[0144] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field used to indicate the absolute value of the update value.

[0145] 3 reserved bits and a 5-bit indication field used to indicate the numerical value of the update value.

[0146] 1 bit of the second indication field and a 7-bit indication field used to indicate the numerical value of the update value.

[0147] 8-bit indication field used to indicate the numerical value of the update value.

[0148] 4-bit indication field used to indicate the absolute value of the update value.

[0149] In a fifth aspect, the embodiments of the present disclosure provide a network device, comprising: a transceiver module configured to send first information to a terminal, wherein the first information includes information indicating that a joint TCI state supports M-TRP transmission, the terminal supports unified TCI state configuration and is configured in a joint TCI state mode; and wherein the first information is used to update a first configuration, and the first configuration is used to determine a PL offset corresponding to an UL-only TRP.

[0150] In some embodiments of the fifth aspect, the first configuration includes at least one of the following:

[0151] The first joint TCI state is configured by RRC signaling;

[0152] The second joint TCI state is activated by MAC CE indication;

[0153] a third joint TCI state, which is indicated by the DCI or indicated by the DCI and RRC signaling jointly.

[0154] In some embodiments of the fifth aspect, the first information comprises a first MAC CE.

[0155] In some embodiments of the fifth aspect, an indication field in the first MAC CE is used to indicate the updated value of the PL offset.

[0156] In some embodiments of the fifth aspect, a number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

[0157] In some embodiments of the fifth aspect, the indication step comprises one of:

[0158] 1 dB; 2 dB; 4 dB.

[0159] In some embodiments of the fifth aspect, at least 5 bits of the first MAC CE are used to indicate a numerical value of the updated value; or,

[0160] 1 bit of the first MAC CE is used to indicate a positive or negative value of the updated value, and LSB 4 bits are used to indicate an absolute value of the updated value; or,

[0161] At least 5 bits of the first MAC CE are used to indicate a numerical value of the updated value, MSB indication field is used to indicate a positive or negative value of the updated value, and LSB indication field is used to indicate an absolute value of the updated value.

[0162] In some embodiments of the fifth aspect, the first MAC CE has at least one first indication field, which is used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is updated with the PL offset.

[0163] In some embodiments of the fifth aspect, a signaling length of the first MAC CE is determined by the first indication field, which is determined by one of:

[0164] a first number, which is used to represent a number of TCI state codepoints;

[0165] a second number, which is used to represent a number of joint TCI states corresponding to the TCI state codepoint that need to be updated with the PL offset.

[0166] In some embodiments of the fifth aspect, the first indication field is a first value for determining that the TCI codepoint contains a joint TCI state, and that the PL offset corresponding to the contained joint TCI state needs to be updated.

[0167] The first indication field is a second value for determining that the TCI codepoint does not contain a joint TCI state; or

[0168] The first indication field is a second value for determining that the TCI codepoint contains a joint TCI state, and that the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0169] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0170] In some embodiments of the fifth aspect, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

[0171] In some embodiments of the fifth aspect, the indication field corresponding to the update value in the first MAC CE includes at least one of the following:

[0172] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field, the 4-bit indication field being used to indicate the absolute value of the update value.

[0173] 3 reserved bits and a 5-bit indication field, the 5-bit indication field being used to indicate the numerical value of the update value.

[0174] 1 bit of the second indication field and a 7-bit indication field, the 7-bit indication field being used to indicate the numerical value of the update value.

[0175] 8-bit indication field, the 8-bit indication field being used to indicate the numerical value of the update value.

[0176] 4-bit indication field, the 4-bit indication field being used to indicate the absolute value of the update value.

[0177] In a sixth aspect, the embodiments of the present disclosure provide a communication device, which can be a terminal or a network device, comprising one or more processors; wherein the processor of the terminal is configured to execute the method of the first aspect, and the processor of the network device is configured to execute the method of the second aspect.

[0178] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising: a terminal and a network device; the terminal performs the method in the first aspect, and the network device performs the method in the second aspect.

[0179] In an eighth aspect, an embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor to implement the method in the first aspect, or the method in the second aspect.

[0180] In a ninth aspect, an embodiment of the present disclosure provides a computer program product, comprising a computer program, which is executed by a processor to implement the method in the first aspect, or the method in the second aspect.

[0181] In a tenth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, causes the computer to perform the method in the first aspect, or the method in the second aspect.

[0182] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method in the first aspect, or the method in the second aspect.

[0183] It can be understood that the terminal, the network device, the communication system, and the storage medium are used to execute the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here.

[0184] The embodiments of the present disclosure provide a communication method, a communication device, and a communication system. In some embodiments, the terms of the communication method, the information processing method, the information sending method, and the information receiving method can be replaced with each other, the terms of the communication device, the information processing device, the information sending device, and the information receiving device can be replaced with each other, and the terms of the information processing system, the communication system, the information sending system, and the information receiving system can be replaced with each other.

[0185] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with optional implementation of other embodiments.

[0186] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0187] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0188] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0189] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0190] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0191] The description manner such as "at least one of A, B, C, …", "A and / or B and / or C, …" and the like in the embodiments of the present disclosure includes any one of A, B, C, … existing alone, and also includes any combination of any multiple of A, B, C, …, each of which can exist alone; for example, "at least one of A, B, C" includes a case of A alone, a case of B alone, a case of C alone, a case of combination of A and B, a case of combination of A and C, a case of combination of B and C, and a case of combination of A and B and C; for example, A and / or B includes a case of A alone, a case of B alone, and a case of combination of A and B.

[0192] In some embodiments, the description manner such as "A in a case, B in another case", "in response to a case A, in response to another case B" and the like can include the following technical solutions according to the case: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, from A and B, execution is selected in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches of A, B, C and the like, it is similar to the above.

[0193] The prefix words "first", "second" and the like in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description of the description objects should refer to the description in the context of the claims or embodiments, and should not constitute redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0194] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0195] In some embodiments, the terms "in response to", "in response to determining", "in the case of", "when", "if", "if" and the like can be replaced with each other.

[0196] In some embodiments, the terms "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0197] In some embodiments, an apparatus and the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "IoT terminal device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0198] In some embodiments, "network" can be interpreted as an apparatus (for example, an access network device, a core network device and the like) included in the network.

[0199] In some embodiments, the terms “access network device (AN IoT terminal device),” “radio access network device (RAN IoT terminal device),” “base station (BS),” “radio base station,” “fixed station,” “node,” “access point,” “transmission point (TP),” “reception point (RP),” “transmission / reception point (TRP),” “panel,” “antenna panel,” “antenna array,” “cell,” “macro cell,” “small cell,” “femto cell,” “pico cell,” “sector,” “cell group,” “carrier,” “component carrier,” “bandwidth part (BWP),” and the like can be replaced with each other.

[0200] In some embodiments, the terms "terminal," "terminal IoT device," "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," "Narrow Band Internet of Things (NB-IoT) device," and the like can be replaced with each other.

[0201] In some embodiments, the access network device, the core network device, or the network device can be replaced with a terminal. For example, the structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced with the communication between a plurality of terminals (for example, also referred to as device-to-device (IoT terminal device-to-IoT terminal device, D2D), vehicle-to-everything (V2X), and the like) can also apply the embodiments of the present disclosure. In this case, it can also be configured as a structure in which the terminal has all or part of the functions that the access network device has. Furthermore, the language of "uplink," "downlink," and the like can also be replaced with the language corresponding to the communication between terminals (for example, "side"). For example, the uplink channel, the downlink channel, and the like can be replaced with the side channel, and the uplink, the downlink, and the like can be replaced with the sidelink.

[0202] In some embodiments, the terminal can be replaced with the access network device, the core network device, or the network device. In this case, it can also be configured as a structure in which the access network device, the core network device, or the network device has all or part of the functions that the terminal has.

[0203] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country in which the location is situated.

[0204] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0205] In some embodiments, the threshold mentioned in the embodiments can be a numerical value, a constant, or some fixed value, etc.

[0206] In addition, each element, each row, or each column in the table of the embodiments of the disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0207] The correspondence shown in each table in the disclosure can be configured or predefined. The values of the information in each table are only examples, and other values can be configured, and the disclosure is not limited. When configuring the correspondence between the information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows in the table in the disclosure can not be configured. For another example, the above table can be appropriately deformed, adjusted, etc., such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, etc.

[0208] The predefinition in the disclosure can be understood as definition, predefinition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

[0209] The communication method, communication device, and communication system provided by the disclosure will be described in detail below with reference to the accompanying drawings.

[0210] FIG. 2 shows a structure diagram of a communication system according to an embodiment of the disclosure. As shown in FIG. 2, the system architecture can include a terminal 11, a network device 12, and a UL-only TRP.

[0211] In some embodiments, the terminal 11 supports unified TCI state configuration.

[0212] In some embodiments, the terminal 11 is configured by the network device to be in joint TCI state mode.

[0213] In some examples, the terminal 11 can be a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like. The terminal 11 can also be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet (Pad), a computer with wireless transceiver function, a virtual reality device, an augmented reality device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, or the like. Embodiments of the present disclosure do not limit the specific technology and specific device form of the terminal 11.

[0214] In some embodiments, the network device 12 can be an entity for transmitting or receiving signals on the network side. For example, the network device can be a base station or a core network node or a server, and the like, and specifically can be a communication satellite, an evolved NodeB (eNB), a transmission reception point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system, and the like. Embodiments of the present disclosure do not limit the specific technology and specific device form of the network device. The network device provided by the embodiments of the present disclosure can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (control unit). The CU-DU structure can split the protocol layers of the network device, for example, the base station, and the functions of part of the protocol layers are controlled by the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU and controlled by the CU.

[0215] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems.

[0216] The following embodiments of the present disclosure can be applied to the communication system shown in FIG. 2, or part of the subject, but are not limited thereto. The subjects shown in FIG. 2 are illustrative, and the communication system can include all or part of the subjects in FIG. 2, or other subjects other than FIG. 2. The number and form of each subject is arbitrary, the connection relationship between each subject is illustrative, each subject can be connected or not connected, and the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0217] Embodiments of the present disclosure can be applied to satellite communication, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G NR, Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, device-to-device (IoT terminal-to-IoT terminal, D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0218] When the terminal performs uplink channel / signal transmission, uplink power control needs to be performed. Since only the macro gNB has a downlink path loss reference signal (PL RS), and the UL-only TRP does not have a downlink signal, how to estimate the path loss for the UL-only TRP is a problem to be solved. This problem can be solved by considering the PL offset parameter estimated relative to the macro gNB for the corresponding PL calculation for the UL-only TRP, to achieve the corresponding uplink power control. There are two types of solutions for the terminal to estimate the path loss for the UL-only TRP:

[0219] Method 1:

[0220] Downlink path loss estimation is performed based on the DL PL RS configuration, and the path loss estimation value in the UL TRP direction is obtained through the PL offset configuration value associated with the TCI state pointing to the UL-only TRP, and is used for the transmission of uplink channels / signals;

[0221] PL UL = PL DL - PL offset;

[0222] Method 2:

[0223] The initial value of the uplink path loss PL UL is calculated through the PL offset in method 1, and the PL offset' that changes relative to PL UL is updated by sending SRS to the UL TRP, and the new PL UL is calculated by the following formula:

[0224] PL UL' = PL UL + PL offset';

[0225] In the UL-only scenario, a cell includes a macro gNB and multiple UL-only TRP reception points. In order to support intra-cell downlink S-TRP / uplink M-TRP transmission, the base station needs to perform uplink / downlink beam management process and indicate the beam information used for data / signal transmission to the terminal, and the uplink M-TRP transmission is completed in cooperation between the macro gNB and the UL-only TRP multiple nodes.

[0226] When the terminal performs uplink channel / signal transmission, the DL PL RS configured by the network and the PL offset associated with the TCI state can be determined to implement the PL calculation for the UL-only TRP direction transmission. However, how to update the PL offset is a technical problem to be solved.

[0227] To solve the above problems, by applying the scheme of the embodiments of the disclosure, for a terminal supporting unified TCI state configuration and configured as a joint TCI state mode, first information sent by a network device can be received, and a first configuration is updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. Further, the PL offset corresponding to the UL-only TRP can be updated.

[0228] Further, in order to illustrate the specific execution process of the above communication system, FIG. 3 shows a schematic diagram of a communication method according to an embodiment of the disclosure. The method is applied to the above communication system, as shown in FIG. 3, and can include the following steps:

[0229] Step S201, the network device sends first information to the terminal.

[0230] In some embodiments, the terminal receives the first information sent by the network device.

[0231] In some embodiments, the terminal supports unified TCI state configuration. The terminal can be configured and used according to the characteristics of unified transmission configuration indication (unified TCI state) in the 3GPP new radio (NR) Release 18 () standard, and supports downlink single TRP / uplink multiple TRP (DL S-TRP / UL M-TRP) transmission.

[0232] In some embodiments, the terminal is configured as a joint TCI state mode, that is, the network device can indicate multiple joint TCI states for uplink transmission. The network device configures the unified TCI state as the joint TCI state mode, wherein the TCI state configured in the joint TCI state mode can be used for uplink transmission and downlink transmission at the same time. Wherein the joint TCI state and the DL TCI state share one TCI state configuration pool / set.

[0233] In some embodiments, the cell includes one macro gNB and multiple UL-only TRP reception points, i.e., asymmetric multi-TRP transmission (downlink single-TRP / uplink multi-TRP), the terminal can be configured with the PL offset corresponding to the UL-only TRP by the downlink TRP, i.e., the macro gNB, when the terminal transmits the uplink channel / signal, the downlink path loss reference signal (DL PL RS) configured by the network and the configured PL offset can be used to calculate the path loss (PL) for the UL-only TRP direction transmission. When it is necessary to update the PL offset corresponding to the UL-only TRP, the network device can send the first information to the terminal to indicate the update of the PL offset parameter corresponding to the UL-only TRP.

[0234] In some embodiments, the first information includes related information indicating the joint TCI state supporting M-TRP transmission, such as whether to activate or deactivate, whether to update the corresponding PL offset parameter, and the like.

[0235] In some embodiments, the first information can be used to indicate the update of the PL offset parameter corresponding to the UL-only TRP, and the first information can include at least one of the following:

[0236] Radio Resource Control (RRC) signaling, Downlink Control Information (DCI), Media Access Control (MAC) control element (CE), Master Information Block (MIB), System Information Block (SIB), and the like.

[0237] Step S202, the terminal updates the first configuration according to the first information.

[0238] In some embodiments, the first configuration can be used to determine the PL offset corresponding to the UL-only TRP. The first configuration can include the PL offset parameter corresponding to the UL-only TRP, and the terminal can update the first configuration according to the first information, and then update the PL offset corresponding to the UL-only TRP.

[0239] In some embodiments, at least one of A1 to A3 includes the first configuration:

[0240] A1, a first joint TCI state, which is configured by radio resource control (RRC) signaling, such as a joint TCI state configured by RRC signaling by the network device, can be a joint TCI state list, which can include all configured joint TCI states, such as up to 128 configured joint TCI states. The RRC signaling configured joint TCI state can include a first configuration, i.e., a PL offset parameter corresponding to an initial configuration of the UL-only TRP. In some examples, the network device can indicate to update the PL offset parameter in the RRC configured joint TCI state by the first information, which can be applied to the uplink loss estimation for the UL-only TRP.

[0241] A2, a second joint TCI state, which is activated by a MAC CE, such as the network device sending a MAC CE to the terminal, and then activating a joint TCI state from the RRC configured joint TCI state list by the MAC CE, such as up to 16 activated, the activated joint TCI state can include a first configuration, i.e., a PL offset parameter corresponding to the UL-only TRP. In some examples, the network device can indicate to update the PL offset parameter in the activated joint TCI state by the first information, which can be applied to the uplink loss estimation for the UL-only TRP.

[0242] A3, a third joint TCI state, which is indicated to be applied by downlink control information (DCI) or indicated to be applied by DCI and RRC signaling jointly, for example, the network device sends DCI to the terminal, and the current applied joint TCI state can be further indicated from the activated joint TCI state; or the network device indicates the current applied joint TCI state by DCI and RRC signaling jointly, for example, different channels / signals indicate the joint TCI state in different ways, the physical downlink shared channel (PDSCH) / dynamic grant (DG) physical uplink shared channel (PUSCH) can be indicated by DCI, and the sounding reference signal (SRS) or type 1 configured grant (CG) PUSCH / physical uplink control channel (PUCCH) can be configured by RRC signaling to apply part / all of the joint TCI state indicated by DCI. The current applied joint TCI state can include a first configuration, i.e., a PL offset parameter corresponding to the UL-only TRP. In some examples, the network device can indicate the update of the PL offset parameter in the current applied joint TCI state by the first information, and the PL offset parameter can be applied to the uplink loss estimation for the UL-only TRP.

[0243] The update of the PL offset in the present embodiment can be applied to at least one of A1 to A3 described above.

[0244] In some embodiments, the first information includes a first MAC CE, which can be a newly designed MAC CE, and the network device can send the first MAC CE to the terminal, and then indicate the update of the PL offset corresponding to the UL-only TRP by the first MAC CE.

[0245] In some embodiments, the indication field in the first MAC CE can be used to indicate the updated value of the PL offset corresponding to the UL-only TRP.

[0246] In some embodiments, the number of bits used in the indication field of the first MAC CE can be determined according to the indication range and the indication step of the PL offset. For example, the indication range of the PL offset corresponding to the UL-only TRP can be [-A, B], for example, the PL offset can be positive or negative, the minimum value can be -A dB, and the maximum value can be B dB, and the values of A and B can be set according to the actual situation. The indication step of the PL offset can be the indication granularity of the PL offset.

[0247] In some examples, the indication step size of the PL offset comprises one of:

[0248] 1 dB; 2 dB; 4 dB.

[0249] There can be multiple ways to indicate the updated value of the PL offset through the indication field in the first MAC CE, taking the example that the indication step size of the PL offset is 4 dB, including but not limited to the following B1 to B3 shown ways:

[0250] B1, at least 5 bits of the indication field in the first MAC CE are used to indicate the numerical value (or can be referred to as actual value, etc.) of the updated value of the PL offset, for example, in the first MAC CE, at least 5 bits of the indication field are used to indicate what the numerical value of the updated value of the PL offset corresponding to the UL-only TRP is.

[0251] B2, 1 bit of the indication field in the first MAC CE is used to indicate the positive or negative value of the updated value of the PL offset, and the LSB 4 bits of the indication field are used to indicate the absolute value of the updated value of the PL offset, for example, in the first MAC CE, 1 bit of the indication field is used to indicate the positive or negative value of the updated value of the PL offset, such as 1 for positive value and 0 for negative value, or 1 for negative value and 0 for positive value. On the basis of indicating the positive or negative value of the updated value through the 1 bit of the indication field, the LSB 4 bits of the indication field can be used to further indicate the absolute value of the updated value of the PL offset, and then the numerical value of the updated value of the PL offset can be obtained through the positive or negative value and the absolute value.

[0252] B3, at least 5 bits of the indication field in the first MAC CE are used to indicate the numerical value of the updated value of the PL offset, and the MSB indication field is used to indicate the positive or negative value of the updated value of the PL offset, and the LSB indication field is used to indicate the absolute value of the updated value of the PL offset, for example, in the first MAC CE, at least 5 bits of the indication field can be used to indicate the numerical value of the updated value of the PL offset, and the MSB indication field can be used to indicate the positive or negative value of the updated value of the PL offset, and the LSB indication field can be used to indicate the absolute value of the updated value of the PL offset.

[0253] In some embodiments, more bits can be used to support the indication design of smaller step size, such as 1 dB or 2 dB, etc.

[0254] In some embodiments, the first MAC CE has at least one first indication field, which can be used to indicate whether the at least one joint TCI state corresponding to the TCI codepoint is updated with the PL offset. For example, in the newly designed first MAC CE, define Pi, j indication field to indicate whether the jth joint TCI state in the ith TCI codepoint needs to be updated with the PL offset. 1 means update, 0 means no update; or 1 means no update, 0 means update.

[0255] In some embodiments, the signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following:

[0256] The first number is used to represent the number of TCI state codepoints;

[0257] The second number is used to represent the number of joint TCI states corresponding to the TCI state codepoint that need to be updated with the PL offset.

[0258] In some examples, the signaling length of the first MAC CE is variable, and the supported indication length can be determined by the first indication field. For example, when the PL offset of the joint TCI state corresponding to 2 TCI codepoints needs to be updated, 2 bits in 1 byte can be used to indicate that the PL offset of the 2 joint TCI states needs to be updated, and 1 or 2 bytes can be used to indicate the updated value of the 2 PL offsets; when the PL offset of the joint TCI state corresponding to 10 TCI codepoints needs to be updated, 10 bits in 2 bytes can be used to indicate that the PL offset of the 10 joint TCI states needs to be updated, and 5 or 10 bytes can be used to indicate the updated value of the 10 PL offsets.

[0259] In some examples, the signaling length of the first MAC CE is fixed, for example, the PL offset of the joint TCI state corresponding to each TCI state codepoint needs to be updated. Taking the example of updating the PL offset parameters of the activated 8 joint TCI states, 4 or 8 bytes can be fixedly used to indicate the updated value of the PL offset corresponding to the 8 joint TCI states.

[0260] In some embodiments, the first indication field is a first value for determining that the TCI codepoint contains the joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated, the first value being one of 0 and 1.

[0261] In some embodiments, the first indication field is a second value for determining that the TCI codepoint does not contain the joint TCI state, the second value being one of 0 and 1, and the first value being different from the second value.

[0262] In some embodiments, the first indication field is a second value for determining that the TCI codepoint contains the joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated, the second value being one of 0 and 1, and the first value being different from the second value.

[0263] In some examples, the first indication field is a first value for determining that the TCI codepoint contains the joint TCI state and the corresponding PL offset needs to be updated, and the first indication field is a second value for determining that the TCI codepoint does not contain the joint TCI state, or the TCI codepoint contains the joint TCI state and the corresponding PL offset does not need to be updated, wherein the first value and the second value are one of 0 and 1, and the first value is different from the second value. For example, the first indication field is 1 for determining that the TCI codepoint contains the joint TCI state and the corresponding PL offset needs to be updated, and the first indication field is 0 for determining that the TCI codepoint does not contain the joint TCI state, or the TCI codepoint contains the joint TCI state and the corresponding PL offset does not need to be updated.

[0264] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field can be used to indicate that the updated value of the PL offset corresponding to the joint TCI state is a positive value or a negative value. For example, in the newly designed first MAC CE, a P / N indication field is defined to indicate that the updated value of the PL offset corresponding to the joint TCI state that needs to be updated is a positive value or a negative value.

[0265] In some embodiments, taking updating the PL offset parameter in the activated joint TCI state as an example, the indication domain corresponding to the PL offset update value in the first MAC CE can include at least one of the following C1 to C5:

[0266] C1, a 1-bit second indication domain, 3 reserved bits, and a 4-bit indication domain for indicating the absolute value of the PL offset update value.

[0267] In some examples, based on the joint TCI state MAC CE (as shown in FIG. 1), a new MAC CE, i.e., the first MAC CE, can be designed as shown in FIG. 4. On the basis of the joint TCI state MAC CE, a Pi,j indication domain is defined for indicating whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update, and a 1-bit P / N indication domain is defined for indicating whether the PL offset update value corresponding to the joint TCI state that needs to be updated is a positive value or a negative value. In FIG. 4, P 1，1 to P 8，2 indicate whether each joint TCI state in the 8 TCI codepoints needs a PL offset update, where 1 indicates that there is an update value, and 0 indicates that there is no update or indicates that the joint TCI state corresponds to a DL TRP. The following MAC CE indication bytes respectively indicate the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state. If a certain joint TCI state needs a PL offset update, the corresponding update value is found through the joint TCI state, a 1-bit P / N indication domain is used to indicate whether the PL offset update value is a positive value or a negative value, where 1 is a positive value, and 0 is a negative value, then there are 3 reserved bits R in the middle, and finally there is a 4-bit indication domain for indicating the absolute value of the PL offset update value.

[0268] In some examples, a new MAC CE, i.e., a first MAC CE, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), as shown in FIG. 5. On the basis of the jointTCI state MAC CE, Pi,j is defined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update, and a 1-bit P / N indication field is defined to indicate whether the PL offset update value corresponding to the joint TCI state that needs to be updated is positive or negative. In FIG. 5, P 1，1 to P 8，2 indicates whether each joint TCI state in the 8 TCI codepoints needs a PL offset update, 1 indicates that there is an update value, and 0 indicates that there is no update or indicates that the joint TCI state corresponds to a DL TRP. One method is that the following MAC CE indication bytes respectively indicate the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state, and the first N bytes are used for the indication of all joint TCI states. The indication byte corresponding to the PL offset update value of each joint TCI state is indicated by M after the joint TCI state byte, and the order of each PL offset update value and joint TCI state is one-to-one corresponding, i.e., M is equal to N. Another indication method is that the following MAC-CE indication bytes respectively indicate the joint TCI state activated by the MAC-CE and the PL offset value of the joint TCI state that needs to update the PL offset. If a TCI state needs a PL offset update through the Pi,j indication field, the actual corresponding joint TCI state ID PL offset update value can be determined according to the update order corresponding to the Pi,j indication field. There can be M PL offset update values, where M is less than or equal to N. A 1-bit P / N indication field is used to indicate whether the PL offset update value is positive or negative, e.g., 1 is positive and 0 is negative. Then, there are 3 reserved bits R in the middle, and finally, there are 4-bit indication fields for indicating the absolute value of the PL offset update value.

[0269] In some examples, a new MAC CE, i.e., a first MAC CE, as shown in FIG. 6, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The Fi,j indication field corresponds to 8 TCI codepoints activated by the MAC CE, and the Fi,j indication field is indicated as 1 if the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset needs to be updated; the Fi,j indication field is indicated as 0 when the ith TCI codepoint does not contain the jth joint TCI state or the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset does not need to be updated; the following MAC CE indication bytes indicate the PL offset value of the joint TCI state that needs to be updated. In FIG. 6, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to F 8，2 If a joint TCI state needs a PL offset update, find the indication field for indicating the update value, and indicate whether the PL offset update value is positive or negative by the 1-bit P / N indication field, such as 1 for positive and 0 for negative, and then the middle is 3 reserved bits R, and finally the 4-bit indication field is used to indicate the absolute value of the PL offset update value.

[0270] C2, 3 reserved bits, and a 5-bit indication field are used to indicate the numerical value of the PL offset update value.

[0271] In some examples, a new MAC CE, i.e., a first MAC CE, as shown in FIG. 6, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The Fi,j indication field corresponds to 8 TCI codepoints activated by the MAC CE, and the Fi,j indication field is indicated as 1 if the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset needs to be updated; the Fi,j indication field is indicated as 0 when the ith TCI codepoint does not contain the jth joint TCI state or the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset does not need to be updated; the following MAC CE indication bytes indicate the PL offset value of the joint TCI state that needs to be updated. In FIG. 6, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to P 8，2to indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 corresponds to an updated value, 0 does not need to update or indicates that the TCI state corresponds to a DL TRP. The following MAC CE indicates the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state. If a certain joint TCI state needs to update the PL offset, the corresponding updated value is found through the joint TCI state, first 3 reserved bits R, then 5 bits of the indication domain are used to indicate the numerical value of the PL offset update value.

[0272] In some examples, based on the joint TCI state MAC CE (as shown in FIG. 1), a new MAC CE, i.e. the first MAC CE, can be designed as shown in FIG. 8, and on the basis of the joint TCI state MAC CE, define Pi, j indication domain to indicate whether the jth joint TCI state in the ith TCI codepoint needs PL offset update. In FIG. 8, through P 1，1 to P 8，2To indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 means there is an update value, 0 means no update or indicates that the TCI state corresponds to a DL TRP. One method is that the following MAC-CE indication bytes respectively indicate the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state. The first N bytes are used for the indication of all joint TCI states. The indication byte corresponding to the PL offset update value of each joint TCI state is indicated after the joint TCI state byte by M. And the order of each PL offset update value and joint TCI state corresponds one by one, that is, M is equal to N. Another indication method is that the following MAC-CE indication bytes respectively indicate the joint TCI state activated by the MAC-CE and the PL offset value of the joint TCI state that needs to update the PL offset. If a certain TCI state needs PL offset update through the Pi,j indication field, the actual corresponding joint TCI state ID PL offset update value can be determined according to the update order corresponding to the Pi,j indication field. There can be M PL offset update values, where M is less than or equal to N. First, there are 3 reserved bits R, then 5-bit indication field is used to indicate the numerical value of the PL offset update value.

[0273] In some examples, a new MAC CE, i.e., the first MAC CE, as shown in FIG. 9, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The Fi,j indication field corresponds to 8 TCI codepoints activated by the MAC CE. If the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset needs to be updated, the Fi,j indication field is indicated as 1; when the ith TCI codepoint does not contain the jth joint TCI state or the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset does not need to be updated, the Fi,j indication field is indicated as 0. The following MAC CE indication bytes indicate the PL offset value of the joint TCI state that needs to be updated. In FIG. 9, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to F 8，2 If a certain TCI state needs a PL offset update, the indication field for indicating the updated value is found, and then 3 reserved bits R and 5-bit indication field are used to indicate the numerical value of the PL offset update value.

[0274] C3, 1-bit second indication field and 7-bit indication field are used to indicate the numerical value of the PL offset update value.

[0275] In some examples, a new MAC CE, i.e., the first MAC CE, as shown in FIG. 10, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and on the basis of the jointTCI state MAC CE, the Pi,j indication field is defined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update, and the 1-bit P / N indication field is defined to indicate whether the PL offset update value corresponding to the joint TCI state that needs to be updated is a positive value or a negative value. In FIG. 10, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by P 1，1 to P 8，2To indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 means there is an update value, 0 means no update or indicates that the joint TCI state corresponds to a DL TRP. The following MAC CE indicates the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state respectively. If a certain joint TCI state needs PL offset update, the corresponding update value is found through the joint TCI state, and the 1-bit P / N indication field is used to indicate that the PL offset update value is positive or negative, 1 for positive and 0 for negative, followed by a 7-bit indication field to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0276] In some examples, based on the joint TCI state MAC CE (as shown in FIG. 1), a new MAC CE, i.e., a first MAC CE, can be designed as shown in FIG. 11. On the basis of the joint TCI state MAC CE, a Pi,j indication field is defined to indicate whether the jth joint TCI state in the ith TCI codepoint needs PL offset update, and a 1-bit P / N indication field is defined to indicate whether the PL offset update value corresponding to the joint TCI state that needs to be updated is positive or negative. In FIG. 11, P 1，1 to P 8，2To indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 means there is an update value, 0 means no update or indicates that the joint TCI state corresponds to a DL TRP. One method is that the following MAC-CE indication bytes respectively indicate the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state, and the first N bytes are used for the indication of all joint TCI states. The indication byte corresponding to the PL offset update value of each joint TCI state is indicated after the joint TCI state byte by M, and the order of each PL offset update value and joint TCI state is one-to-one, that is, M is equal to N. Another indication method is that the following MAC-CE indication bytes respectively indicate the joint TCI state activated by the MAC-CE and the PL offset value of the joint TCI state that needs to update the PL offset. If a certain TCI state needs to update the PL offset through the Pi,j indication field, the actual PL offset update value corresponding to the joint TCI state ID can be determined according to the update order corresponding to the Pi,j indication field. There can be M PL offset update values, where M is less than or equal to N. A 1-bit P / N indication field is used to indicate whether the PL offset update value is positive or negative, 1 for positive and 0 for negative. Then a 7-bit indication field is used to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0277] In some examples, a new MAC CE, i.e., a first MAC CE, as shown in FIG. 12, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The Fi,j indication field corresponds to 8 TCI codepoints activated by the MAC CE, and the Fi,j indication field is indicated as 1 if the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset needs to be updated; the Fi,j indication field is indicated as 0 when the ith TCI codepoint does not contain the jth joint TCI state or the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset does not need to be updated; the following MAC CE indication bytes indicate the PL offset value of the joint TCI state that needs to be updated. In FIG. 12, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to F 8，2 If a joint TCI state needs a PL offset update, the indication field for indicating the update value is found, and the 1-bit P / N indication field is used to indicate whether the PL offset update value is positive or negative, i.e., 1 for positive and 0 for negative, and then the 7-bit indication field is used to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0278] C4, an 8-bit indication field, is used to indicate the numerical value of the PL offset update value.

[0279] In some examples, a new MAC CE, i.e., a first MAC CE, as shown in FIG. 13, can be designed based on the jointTCI state MAC CE (as shown in FIG. 1), and the Pi,j indication field is defined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update based on the jointTCI state MAC CE. In FIG. 13, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by P 1，1 to P 8，2to indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 corresponds to an updated value, 0 does not need to update or indicates that the joint TCI state corresponds to a DL TRP. The following MAC CE indicates the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state respectively. If a certain joint TCI state needs to update the PL offset, the corresponding updated value is found through the joint TCI state, and the 8-bit indication domain is used to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0280] In some examples, based on the joint TCI state MAC CE (as shown in FIG. 1), a new MAC CE, i.e. the first MAC CE, can be designed as shown in FIG. 14. On the basis of the joint TCI state MAC CE, the Pi,j indication domain is used to indicate whether the jth joint TCI state in the ith TCI codepoint needs PL offset update. In FIG. 14, the P 1，1 to P 8，2To indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 means there is an update value, 0 means no update or indicates that the joint TCI state corresponds to a DL TRP. One method is that the following MAC-CE indication bytes respectively indicate the PL offset value of the joint TCI state that needs to update the PL offset and the corresponding joint TCI state, and the previous N bytes are used for the indication of all joint TCI states. The indication byte corresponding to the PL offset update value of each joint TCI state is indicated after the joint TCI state byte by M, and the order of each PL offset update value and joint TCI state corresponds one by one, that is, M is equal to N. Another indication method is that the following MAC-CE indication bytes respectively indicate the joint TCI state activated by the MAC-CE and the PL offset value of the joint TCI state that needs to update the PL offset. If a certain TCI state needs PL offset update through the Pi,j indication field, the actual corresponding PL offset update value of the joint TCI state ID can be determined according to the update order corresponding to the Pi,j indication field. There can be M PL offset update values, where M is less than or equal to N, and the 8-bit indication field is used to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0281] In some examples, a new MAC CE, i.e., a first MAC CE, as shown in FIG. 15, is designed instead of the jointTCI stateMAC CE (as shown in FIG. 1), and the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The Fi,j indication field corresponds to 8 TCI codepoints activated by the MAC CE, and the Fi,j indication field is indicated as 1 if the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset needs to be updated; the Fi,j indication field is indicated as 0 when the ith TCI codepoint does not contain the jth joint TCI state or the ith TCI codepoint contains the jth joint TCI state and the corresponding PL offset does not need to be updated. The following MAC CE indication bytes indicate the PL offset value of the joint TCI state that needs to be updated. In FIG. 15, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to F 8，2 If a joint TCI state needs a PL offset update, the indication field for indicating the update value is found, and the 8-bit indication field is used to indicate the numerical value of the PL offset update value. In this way, a lower indication step can also be supported.

[0282] C5, a 4-bit indication field is used to indicate the absolute value of the PL offset update value.

[0283] In some examples, as shown in FIG. 16, the Fi,j indication field is redefined to indicate whether the jth joint TCI state in the ith TCI codepoint needs a PL offset update. The P / Ni,j indication field is defined to indicate whether the PL offset update value corresponding to the jth joint TCI state in the ith TCI codepoint that needs to be updated is a positive value or a negative value. In FIG. 16, whether each joint TCI state in the 8 TCI codepoints needs a PL offset update is indicated by F 1，1 to F 8，2to indicate whether each joint TCI state in 8 TCI codepoints needs PL offset update, 1 means there is update value, 0 means no update or indicates that the joint TCI state corresponds to a DL TRP. By P / N 1，1 to indicate the PL offset update value corresponding to each joint TCI state that needs to be updated is positive or negative, 1 means positive, 0 means negative. If a joint TCI state needs PL offset update, find the corresponding P / N indication field to indicate that the PL offset update value is positive or negative, and find the corresponding 4-bit indication field to indicate the absolute value of the PL offset update value. In this way, one byte can exist two absolute values of PL offset update value, thereby saving indication space. 8,2

[0284] In some embodiments, for PL offset update in RRC configured joint TCI state, a newly designed first MAC CE can also be used to indicate the update, such as because there are more joint TCI states, up to 128 TCI codepoints can be configured for joint TCI state, so more bytes of indication field can be used to indicate the PL offset update.

[0285] In some examples, for the case of being configured as joint TCI state mode, the joint TCI state corresponding to the maximum supported 128 TCI codepoints can be indicated by 16 bytes of first indication field to indicate whether the PL offset corresponding to each joint TCI state needs to be updated, and up to 128 bytes can be used to indicate the update value of each PL offset, wherein the specific implementation of indicating the update value of the PL offset can refer to at least one of the above C1 to C5, which will not be repeated here.

[0286] In some embodiments, for the PL offset update in the currently applied joint TCI state, a newly designed first MAC CE can also be used to indicate the update, such as a less byte indication field can be used to indicate the PL offset update.

[0287] ​In some examples, 1 byte can be used to indicate whether the PL offset in the currently applied joint TCI state needs to be updated, and the specific implementation of the updated value of the PL offset can refer to at least one of C1 to C5 described above, which will not be repeated here.

[0288] The communication method related to the embodiments of the present disclosure can include at least one of steps S201 to S202. For example, step S201 can be implemented as an independent embodiment, and step S202 can be implemented as an independent embodiment. In addition, part or all of the contents of steps S201 to S202 can be combined to implement an independent embodiment, which is not limited by the embodiments.

[0289] By applying the scheme of the embodiments of the present disclosure, for a terminal supporting unified TCI state configuration and configured in joint TCI state mode, the first information sent by the network device can be received, and the first configuration is updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. Further, the PL offset corresponding to the UL-only TRP can be updated.

[0290] In order to illustrate the specific execution process of the terminal, FIG. 17 shows a flowchart of a communication method according to an embodiment of the present disclosure. Applied to the terminal side execution, it can include the following steps.

[0291] Step S301, the terminal receives the first information sent by the network device.

[0292] In some embodiments, the terminal supports unified TCI state configuration.

[0293] In some embodiments, the terminal is configured in joint TCI state mode.

[0294] In some embodiments, the first information includes related information indicating the joint TCI state supporting M-TRP transmission.

[0295] Step S302, the terminal updates the first configuration according to the first information.

[0296] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0297] In some embodiments, at least one of the following includes the first configuration:

[0298] a first joint TCI state, which is configured by RRC signaling;

[0299] a second joint TCI state, which is activated by MAC CE indication;

[0300] a third joint TCI state, which is applied by DCI indication, or applied by joint indication of DCI and RRC signaling.

[0301] In some embodiments, the first information can include a first MAC CE.

[0302] In some embodiments, an indication field in the first MAC CE can be used to indicate an updated value of the PL offset.

[0303] In some embodiments, the number of bits used in the indication field of the first MAC CE is determined according to the indication range and the indication step size of the PL offset.

[0304] In some embodiments, the indication step size of the PL offset includes one of:

[0305] 1 dB; 2 dB; 4 dB.

[0306] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value of the PL offset.

[0307] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the updated value of the PL offset, and LSB 4-bit indication field is used to indicate the absolute value of the updated value of the PL offset.

[0308] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value of the PL offset, and MSB indication field is used to indicate the positive or negative value of the updated value of the PL offset, and LSB indication field is used to indicate the absolute value of the updated value of the PL offset.

[0309] In some embodiments, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the at least one joint TCI state corresponding to the TCI codepoint is updated with the PL offset.

[0310] In some embodiments, the signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following:

[0311] a first number, the first number is used to represent the number of TCI state codepoints;

[0312] a second number, the second number is used to represent the number of joint TCI states corresponding to the TCI state codepoints that need to update the PL offset.

[0313] In some embodiments, the first indication field is a first value, which is used to determine that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated.

[0314] The first indication field is a second value, which is used to determine that the TCI codepoint does not contain joint TCI state; or

[0315] The first indication field is a second value, which is used to determine that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0316] Wherein, the first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0317] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

[0318] In some examples, the indication field corresponding to the update value of the PL offset in the first MAC CE includes at least one of the following:

[0319] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field, the 4-bit indication field is used to indicate the absolute value of the update value;

[0320] 3 reserved bits and a 5-bit indication field, the 5-bit indication field is used to indicate the numerical value of the update value;

[0321] 1 bit of the second indication field and a 7-bit indication field, the 7-bit indication field is used to indicate the numerical value of the update value;

[0322] 8-bit indication field, used to indicate the numerical value of the update value;

[0323] 4-bit indication field, used to indicate the absolute value of the update value.

[0324] The description of the specific examples in this embodiment can be referred to the corresponding description of the embodiments in FIG. 1 to FIG. 16, which will not be repeated here.

[0325] The communication method related to the embodiment can include at least one of steps S301 to S302. For example, step S301 can be implemented as an independent embodiment, and step S302 can be implemented as an independent embodiment. In addition, part or all of the steps S301 to S302 can be combined to implement an independent embodiment, which is not limited in this embodiment.

[0326] By applying the scheme of the embodiment of the disclosure, for a terminal supporting unified TCI state configuration and configured as a joint TCI state mode, the first information sent by the network device can be received, and the first configuration is updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. Further, the PL offset corresponding to the UL-only TRP can be updated.

[0327] FIG. 18 shows a flow diagram of a communication method according to an embodiment of the disclosure. As shown in FIG. 18, the method is applied to the network device side and can include the following steps.

[0328] Step S401, the network device sends first information to the terminal.

[0329] In some embodiments, the terminal supports unified TCI state configuration.

[0330] In some embodiments, the terminal is configured by the network device as a joint TCI state mode.

[0331] In some embodiments, the first information includes related information indicating a joint TCI state supporting M-TRP transmission.

[0332] In some embodiments, the first information is used to update the first configuration, and the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0333] In some embodiments, at least one of the following includes the first configuration:

[0334] a first joint TCI state, which is configured by RRC signaling;

[0335] a second joint TCI state, which is activated by MAC CE indication;

[0336] a third joint TCI state, which is applied by DCI indication, or applied by joint indication of DCI and RRC signaling.

[0337] In some embodiments, the first information includes a first MAC CE.

[0338] In some embodiments, an indication field in the first MAC CE is used to indicate an updated value of the PL offset.

[0339] In some embodiments, a number of bits used in the indication field in the first MAC CE is determined according to an indication range and an indication step of the PL offset.

[0340] In some embodiments, the indication step of the PL offset includes one of:

[0341] 1 dB; 2 dB; 4 dB.

[0342] In some embodiments, taking the indication step of the PL offset as 4 dB for example, at least 5 bits of the indication field in the first MAC CE are used to indicate a numerical value of the updated value of the PL offset.

[0343] In some embodiments, taking the indication step of the PL offset as 4 dB for example, 1 bit of the indication field in the first MAC CE is used to indicate a positive or negative value of the updated value of the PL offset, and LSB 4 bits of the indication field are used to indicate an absolute value of the updated value of the PL offset.

[0344] In some embodiments, taking the indication step of the PL offset as 4 dB for example, at least 5 bits of the indication field in the first MAC CE are used to indicate a numerical value of the updated value of the PL offset, and MSB of the indication field is used to indicate a positive or negative value of the updated value of the PL offset, and LSB of the indication field is used to indicate an absolute value of the updated value of the PL offset.

[0345] In some embodiments, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is subjected to PL offset update.

[0346] In some embodiments, the signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following:

[0347] a first number, the first number is used to represent the number of TCI state codepoints;

[0348] a second number, the second number is used to represent the number of joint TCI states corresponding to the TCI state codepoints that need to update the PL offset.

[0349] In some embodiments, the first indication field is a first value for determining that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated.

[0350] The first indication field is a second value for determining that the TCI codepoint does not contain a joint TCI state; or

[0351] The first indication field is a second value for determining that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0352] Wherein, the first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0353] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

[0354] In some examples, the indication field corresponding to the update value of the PL offset in the first MAC CE includes at least one of the following:

[0355] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field, the 4-bit indication field is used to indicate the absolute value of the update value;

[0356] 3 reserved bits and a 5-bit indication field, the 5-bit indication field is used to indicate the numerical value of the update value;

[0357] 1 bit of the second indication field and a 7-bit indication field, the 7-bit indication field is used to indicate the numerical value of the update value;

[0358] 8-bit indication field, used for indicating the numerical value of the update value;

[0359] 4-bit indication field, used for indicating the absolute value of the update value.

[0360] The description of the specific examples in the embodiments can be referred to the corresponding description of the embodiments in FIGS. 1-17, which will not be repeated here.

[0361] By applying the scheme of the embodiments of the present disclosure, for a terminal supporting unified TCI state configuration and configured as a joint TCI state mode, the first information sent by the network device can be received, and the first configuration is updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. Further, the PL offset corresponding to the UL-only TRP can be updated.

[0362] Based on the description of the above embodiments, the following specific examples are given, but are not limited thereto:

[0363] For a terminal supporting R18 unified TCI state, it can actually support DL S-TRP / UL M-TRP transmission;

[0364] For specific MAC-CE design, the present scheme considers the joint TCI state mode configuration case;

[0365] The MAC-CE update of the PL offset is applied to:

[0366] Alt.1: RRC configured joint TCI state;

[0367] Alt.2: activated joint TCI state activated by MAC-CE;

[0368] Alt.3: currently applied joint TCI state.

[0369] Wherein, the indication range of the PL offset is [-A, B], the indication step (granularity) is 4dB, and the indication method has the following three methods:

[0370] Alt.1: at least 5-bit indication field is used to indicate the actual value of the PL offset;

[0371] Alt.2: 1-bit indication field is used to indicate the positive / negative value of the PL offset, and 4-bit LSB indication field is used to indicate the absolute value of the PL offset;

[0372] Alt.3: At least 5 bits indication field for indicating PL offset actual value, MSB for indicating PL offset positive / negative value, LSB for indicating PL offset absolute value;

[0373] Consider other smaller step indication design, like 1dB, 2dB;

[0374] For MAC-CE design:

[0375] Method 1: Extend R18 UTCI state MAC-CE to new MAC-CE based on;

[0376] Method 2: Design new MAC-CE;

[0377] MAC-CE design corresponding to method 1:

[0378] Define Pi,j indication field to indicate whether PL offset update is needed in the jthTCI state in the ithTCI codepoint, 1 for corresponding update value, 0 for no update or corresponding DL TRP;

[0379] PL_offset indication field can be indicated in the following ways:

[0380] Define 1 bit P / N+3 bit R+4 bit absolute value;

[0381] 3 bit R+5 bit actual value;

[0382] 1 bit P / N+7 bit actual value;

[0383] 8 bit actual value; (Can support lower indication step);

[0384] Wherein the maximum value of N is 8;

[0385] MAC-CE design corresponding to method 2

[0386] Design 1:

[0387] Redefined F indication field to indicate whether PL offset update is needed in the jthTCI state in the ithTCI codepoint, 1 for corresponding update value, 0 for no update or corresponding DL TRP;

[0388] Define P / N indication field to indicate whether the PL offset value corresponding to the TCI state that needs to be updated is positive or negative;

[0389] PL_offset indication field can be indicated in the following ways:

[0390] 4 bits absolute value

[0391] Design 2:

[0392] Take the example of updating the PL offset corresponding to the activated TCI states,

[0393] Redefine the F indication field to indicate whether the jth TCI state in the ith TCI codepoint needs PL offset update, 1 corresponds to an updated value, and 0 does not need to be updated or corresponds to a DL TRP;

[0394] PL_offset indication field:

[0395] 1 bit P / N + 3 bits R + 4 bits absolute value

[0396] 3 bits R + 5 bits actual value

[0397] 1 bit P / N + 7 bits actual value

[0398] 8 bits actual value; (a lower indication step can be supported)

[0399] The embodiments of the present disclosure define a MAC-CE update method for supporting a terminal of the R18 unified TCI version and configuring the PL offset value corresponding to the joint TCI state mode in the UL-only scenario.

[0400] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device including units or modules for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including units or modules for implementing each step performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0401] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or realize the functions of the units or modules of the above apparatus, wherein the processor is, for example, a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of the elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic IoT terminal device (PLD), and taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor calling software, and the remaining part is implemented in the form of hardware circuit.

[0402] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0403] FIG. 19 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 19, the terminal can include a transceiver module 61 and a processing module 62. In some embodiments, the transceiver module 61 and the processing module 62 are configured to perform at least one of the communication steps performed by the terminal in any of the above methods (for example, steps S301 to S302, but not limited thereto), and details are not described herein.

[0404] In some embodiments, the transceiver module described above can include a sending module and / or a receiving module, which can be separate or integrated together. Alternatively, the transceiver module can be replaced by a transceiver.

[0405] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0406] In some embodiments, at least one of the following includes the first configuration:

[0407] a first joint TCI state, which is configured by RRC signaling;

[0408] a second joint TCI state, which is activated by MAC CE indication;

[0409] a third joint TCI state, which is applied by DCI indication, or applied by joint indication of DCI and RRC signaling.

[0410] In some embodiments, the first information can include a first MAC CE.

[0411] In some embodiments, an indication field in the first MAC CE can be used to indicate an updated value of the PL offset.

[0412] In some embodiments, the number of bits used in the indication field of the first MAC CE is determined according to the indication range and the indication step size of the PL offset.

[0413] In some embodiments, the indication step size of the PL offset includes one of:

[0414] 1 dB; 2 dB; 4 dB.

[0415] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value of the PL offset.

[0416] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the updated value of the PL offset, and LSB 4-bit indication field is used to indicate the absolute value of the updated value of the PL offset.

[0417] In some embodiments, taking the indication step size of the PL offset as 4 dB for example, at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value of the PL offset, and MSB indication field is used to indicate the positive or negative value of the updated value of the PL offset, and LSB indication field is used to indicate the absolute value of the updated value of the PL offset.

[0418] In some embodiments, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the at least one joint TCI state corresponding to the TCI codepoint is updated with the PL offset.

[0419] In some embodiments, the signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following:

[0420] a first number, the first number is used to represent the number of TCI state codepoints;

[0421] a second number, the second number is used to represent the number of joint TCI states corresponding to the TCI state codepoints that need to update the PL offset.

[0422] In some embodiments, the first indication field is a first value for determining that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated.

[0423] The first indication field is a second value for determining that the TCI codepoint does not contain joint TCI state; or,

[0424] The first indication field is a second value for determining that the TCI codepoint contains joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0425] Wherein, the first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0426] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

[0427] In some examples, the indication field corresponding to the update value of the PL offset in the first MAC CE includes at least one of the following:

[0428] 1 bit of the second indication field, 3 reserved bits, and a 4-bit indication field, the 4-bit indication field is used to indicate the absolute value of the update value;

[0429] 3 reserved bits and a 5-bit indication field, the 5-bit indication field is used to indicate the numerical value of the update value;

[0430] 1 bit of the second indication field and a 7-bit indication field, the 7-bit indication field is used to indicate the numerical value of the update value;

[0431] 8-bit indication field, used to indicate the numerical value of the updated value;

[0432] 4-bit indication field, used to indicate the absolute value of the updated value.

[0433] FIG. 20 is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 20, the network device can include a transceiver module 71. In some embodiments, the transceiver module 71 is configured to perform at least one of the communication steps performed by the network device in any of the above methods (for example, step S401, but not limited thereto), and details are not described herein.

[0434] In some embodiments, the transceiver module described above can include a sending module and / or a receiving module, which can be separate or integrated together. Alternatively, the transceiver module can be mutually replaced with a transceiver.

[0435] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0436] In some embodiments, the first configuration includes at least one of the following:

[0437] The first joint TCI state is configured by RRC signaling;

[0438] The second joint TCI state is activated by MAC CE indication;

[0439] The third joint TCI state is applied by DCI indication, or applied by joint indication of DCI and RRC signaling.

[0440] In some embodiments, the first information can include a first MAC CE.

[0441] In some embodiments, the indication field in the first MAC CE can be used to indicate the updated value of the PL offset.

[0442] In some embodiments, the number of bits used in the indication field of the first MAC CE is determined according to the indication range and the indication step of the PL offset.

[0443] In some embodiments, the indication step of the PL offset includes one of the following:

[0444] 1dB; 2dB; 4dB.

[0445] In some embodiments, the indication step size of the PL offset is 4dB, and at least 5 bits of the indication field in the first MAC CE are used to indicate the numerical value of the updated value of the PL offset.

[0446] In some embodiments, the indication step size of the PL offset is 4dB, 1 bit of the indication field in the first MAC CE is used to indicate the positive or negative value of the updated value of the PL offset, and the LSB 4 bits of the indication field are used to indicate the absolute value of the updated value of the PL offset.

[0447] In some embodiments, the indication step size of the PL offset is 4dB, at least 5 bits of the indication field in the first MAC CE are used to indicate the numerical value of the updated value of the PL offset, the MSB of the indication field is used to indicate the positive or negative value of the updated value of the PL offset, and the LSB of the indication field is used to indicate the absolute value of the updated value of the PL offset.

[0448] In some embodiments, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the at least one joint TCI state corresponding to the TCI codepoint is updated by the PL offset.

[0449] In some embodiments, the signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following:

[0450] a first number, the first number is used to represent the number of TCI state codepoints;

[0451] a second number, the second number is used to represent the number of joint TCI states corresponding to the TCI state codepoint that need to update the PL offset.

[0452] In some embodiments, the first indication field is a first value, which is used to determine that the TCI codepoint contains the joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated.

[0453] the first indication field is a second value, which is used to determine that the TCI codepoint does not contain the joint TCI state; or

[0454] the first indication field is a second value, which is used to determine that the TCI codepoint contains the joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated.

[0455] wherein the first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0456] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate that the PL offset update value corresponding to the joint TCI state is a positive value or a negative value.

[0457] In some examples, the indication field corresponding to the update value of the PL offset in the first MAC CE includes at least one of the following:

[0458] 1 bit of the second indication field, 3 reserved bits, and 4-bit indication field, the 4-bit indication field being used to indicate the absolute value of the update value;

[0459] 3 reserved bits and 5-bit indication field, the 5-bit indication field being used to indicate the numerical value of the update value;

[0460] 1 bit of the second indication field and 7-bit indication field, the 7-bit indication field being used to indicate the numerical value of the update value;

[0461] 8-bit indication field, the 8-bit indication field being used to indicate the numerical value of the update value;

[0462] 4-bit indication field, the 4-bit indication field being used to indicate the absolute value of the update value.

[0463] FIG. 21 is a structural schematic diagram of a communication device 8100 according to the embodiments of the present disclosure. The communication device 8100 can be a network device (for example, an access network device, a core network device, etc.), a terminal (for example, a user equipment, etc.), a chip, a chip system, or a processor supporting the implementation of the above-mentioned methods by the network device, a chip, a chip system, or a processor supporting the implementation of the above-mentioned methods by the terminal, etc. The communication device 8100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0464] As shown in FIG. 21, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general processor or a special purpose processor, etc., such as a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. Optionally, the communication device 8100 is configured to perform any of the above methods. Optionally, the one or more processors 8101 are configured to invoke instructions to cause the communication device 8100 to perform any of the above methods.

[0465] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs the communication steps such as transmitting and / or receiving in the above methods, and the processor 8101 performs at least one of the other steps. In optional embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced with each other, and the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced with each other.

[0466] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memory 8103 can also be outside the communication device 8100. In optional embodiments, the communication device 8100 can include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be configured to receive data from the memory 8102 or other devices, and can be configured to send data to the memory 8102 or other devices. For example, the interface circuit 8104 can read data stored in the memory 8102 and send the data to the processor 8101.

[0467] The communication device 8100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 can not be limited by FIG. 21. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0468] FIG. 22 is a structural schematic diagram of a chip 8200 according to an embodiment of the present disclosure. For the case where the communication device 8100 is a chip or a chip system, the structural schematic diagram of the chip 8200 shown in FIG. 22 can be referred to, but is not limited thereto.

[0469] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to perform any of the above methods.

[0470] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, and the like can be replaced with each other. In some embodiments, the chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memory 8203 can be outside the chip 8200. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be configured to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be configured to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read data stored in the memory 8203 and send the data to the processor 8201.

[0471] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above methods. The interface circuit 8202 performing the communication steps such as sending and / or receiving in the above methods means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the communication method steps described above.

[0472] The modules and / or devices described in various embodiments of the virtual device, the physical device, the chip, etc. can be combined or separated according to circumstances. Alternatively, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0473] The disclosure further provides a storage medium having stored instructions that, when executed on the communication device 8100, cause the communication device 8100 to perform any of the above methods. Alternatively, the storage medium is an electronic storage medium. Alternatively, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Alternatively, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0474] The disclosure further provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Alternatively, the program product is a computer program product.

[0475] The disclosure further provides a computer program that, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal, and the method comprises: receiving first information sent by a network device, the first information comprising information indicating a joint transmission configuration indication state (joint TCI state) supporting multi-transmission reception point (M-TRP) transmission; updating a first configuration according to the first information; wherein the first configuration is used to determine a path loss offset (PL offset) corresponding to a transmission reception point (TRP) supporting only uplink (UL-only).

2. The method of claim 1, wherein, The first configuration comprises at least one of the following: a first joint TCI state, which is configured by radio resource control (RRC) signaling; a second joint TCI state, which is activated by a medium access control (MAC) control element (CE) indication; a third joint TCI state, which is applied by a downlink control information (DCI) indication or a combination of a DCI and RRC signaling indication.

3. The method of any one of claims 1-2, wherein, The first information comprises a first MAC CE.

4. The method of claim 3, wherein, An indication field in the first MAC CE is used to indicate an updated value of the PL offset.

5. The method of claim 4, wherein, The number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

6. The method of claim 5, wherein, The indication step comprises one of the following: 1 dB; 2 dB; 4 dB.

7. The method of any one of claims 3 to 6, wherein: at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value; or 1 bit of an indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and 4 least significant bits (LSB) of an indication field in the first MAC CE are used to indicate an absolute value of the updated value; or at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value, a most significant bit (MSB) of an indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and an LSB of an indication field in the first MAC CE is used to indicate an absolute value of the updated value.

8. The method according to any one of claims 3 to 7, characterized in that, The first MAC CE has at least one first indication field, which is used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is subjected to PL offset updating.

9. The method of claim 8, wherein, A signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following: a first number, which is used to represent a number of TCI state codepoints; a second number, which is used to represent a number of joint TCI states corresponding to the TCI state codepoints and requiring PL offset updating.

10. The method of any one of claims 8-9, wherein, The first indication field is a first value for determining that the TCI codepoint contains a joint TCI state, and a PL offset corresponding to the contained joint TCI state needs to be updated. The first indication field is a second value for determining that the TCI codepoint does not contain a joint TCI state; or The first indication field is a second value for determining that the TCI codepoint contains a joint TCI state, and a PL offset corresponding to the contained joint TCI state does not need to be updated. The first value and the second value are one of 0 and 1, and the first value is different from the second value.

11. The method according to any one of claims 8 to 10, characterized in that, The first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

12. The method of claim 11, wherein, The indication field corresponding to the update value in the first MAC CE includes at least one of the following: 1-bit second indication field, 3 reserved bits, and 4-bit indication field, the 4-bit indication field is used to indicate the absolute value of the update value; 3 reserved bits and 5-bit indication field, the 5-bit indication field is used to indicate the numerical value of the update value; 1-bit second indication field and 7-bit indication field, the 7-bit indication field is used to indicate the numerical value of the update value; 8-bit indication field, the 8-bit indication field is used to indicate the numerical value of the update value; 4-bit indication field, the 4-bit indication field is used to indicate the absolute value of the update value.

13. A method of communication, comprising: The method is performed by a network device, and the method includes: sending first information to a terminal, the first information including information indicating that a joint transmission configuration indication state (joint TCI state) supporting multi-transmission reception point (M-TRP) transmission is supported; The first information is used to update a first configuration, and the first configuration is used to determine a path loss offset (PL offset) corresponding to an uplink only (UL-only) transmission reception point (TRP).

14. The method of claim 11, wherein, The first configuration includes at least one of the following: A first joint transmission configuration indication state (joint TCI state) is configured by radio resource control (RRC) signaling; A second joint TCI state is activated by a medium access control (MAC) control element (CE) indication; A third joint TCI state is applied by a downlink control information (DCI) indication or jointly indicated by a DCI and RRC signaling.

15. The method of any one of claims 13-14, wherein, The first information includes a first MAC CE.

16. The method of claim 15, wherein, An indication field in the first MAC CE is used to indicate an update value of the PL offset.

17. The method of claim 16, wherein, The number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

18. The method of claim 17, wherein, The indication step size includes one of the following: 1dB; 2dB; 4dB.

19. The method of any one of claims 15-18, wherein: at least 5 bits in the first MAC CE are used to indicate a value of the updated value; or 1 bit in the first MAC CE is used to indicate a sign of the updated value, and least significant bits (LSB) 4 bits are used to indicate an absolute value of the updated value; or at least 5 bits in the first MAC CE are used to indicate a value of the updated value, most significant bits (MSB) are used to indicate a sign of the updated value, and LSB are used to indicate an absolute value of the updated value.

20. The method of any one of claims 15-19, wherein, The first MAC CE has at least one first indication field, which is used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is updated for a PL offset.

21. The method of claim 20, wherein, A signaling length of the first MAC CE is determined by the first indication field, which is determined by one of the following: a first number, which is used to represent a number of TCI state codepoints; a second number, which is used to represent a number of joint TCI states corresponding to the TCI state codepoint that need to be updated for a PL offset.

22. The method of any one of claims 20-21, wherein, The first indication field is a first value, which is used to determine that a TCI codepoint includes a joint TCI state, and a PL offset corresponding to the included joint TCI state needs to be updated; The first indication field is a second value, which is used to determine that a TCI codepoint does not include a joint TCI state; or The first indication field is a second value, which is used to determine that a TCI codepoint includes a joint TCI state, and a PL offset corresponding to the included joint TCI state does not need to be updated; wherein the first value and the second value are one of 0 and 1, and the first value is different from the second value.

23. The method of any one of claims 20-22, wherein, The first MAC CE has at least one second indication field, which is used to indicate whether a PL offset update value corresponding to a joint TCI state is positive or negative.

24. The method of claim 23, wherein, The indication field corresponding to the updated value in the first MAC CE includes at least one of the following: 1 bit of the second indication field, 3 reserved bits, and 4 bits of an indication field, which are used to indicate an absolute value of the updated value; 3 reserved bits and 5 bits of an indication field, which are used to indicate a value of the updated value; 1 bit of the second indication field and 7 bits of an indication field, which are used to indicate a value of the updated value; 8 bits of an indication field, which are used to indicate a value of the updated value; 4 bits of indication field are used to indicate the absolute value of the updated value.

25. A method of communication, comprising: Comprise: The network device sends first information to the terminal, and the first information comprises information indicating a joint transmission configuration indication state (joint TCI state) supporting multi-transmission reception point (M-TRP) transmission; The terminal receives the first information and updates a first configuration according to the first information; The first configuration is used to determine a path loss offset (PL offset) corresponding to a transmission reception point (TRP) for only uplink (UL-only).

26. A terminal, characterized by Comprise: The transceiver module is configured to receive first information sent by the network device, and the first information comprises information indicating a joint transmission configuration indication state (joint TCI state) supporting multi-transmission reception point (M-TRP) transmission; The processing module is configured to update a first configuration according to the first information; The first configuration is used to determine a path loss offset (PL offset) corresponding to a transmission reception point (TRP) for only uplink (UL-only).

27. The terminal according to claim 26, characterized by The first configuration comprises at least one of the following: A first joint transmission configuration indication state (joint TCI state) is configured by radio resource control (RRC) signaling; A second joint TCI state is activated by a medium access control (MAC) control element (CE) indication; A third joint TCI state is applied by a downlink control information (DCI) indication or applied by a joint indication of DCI and RRC signaling.

28. The terminal of any one of claims 26-27, wherein, The first information comprises a first MAC CE.

29. The terminal according to claim 28, characterized by An indication field in the first MAC CE is used to indicate an updated value of the PL offset.

30. The terminal of claim 29, wherein, The number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

31. The terminal according to claim 30, characterized by The indication step comprises one of the following: 1 dB; 2 dB; 4 dB.

32. The terminal of any one of claims 28-31, wherein: at least 5 bits of the indication field in the first MAC CE are used to indicate a numerical value of the updated value; or 1 bit of the indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and 4 least significant bits (LSB) of the indication field are used to indicate an absolute value of the updated value; or at least 5 bits of the indication field in the first MAC CE are used to indicate a numerical value of the updated value, a most significant bit (MSB) of the indication field is used to indicate a positive or negative value of the updated value, and the LSB of the indication field is used to indicate an absolute value of the updated value.

33. The terminal according to any one of claims 28 to 32, characterized by, The first MAC CE has at least one first indication field, and the first indication field is used to indicate whether a PL offset update is performed on at least one joint TCI state corresponding to a TCI codepoint.

34. The terminal according to claim 33, characterized by A signaling length of the first MAC CE is determined by the first indication field, and the first indication field is determined by one of the following: A first number, the first number is used to represent a number of TCI state codepoints; A second number, the second number is used to represent a number of joint TCI states corresponding to the TCI state codepoints that need to update the PL offset.

35. The terminal of any one of claims 33-34, wherein, The first indication field is a first value, which is used to determine that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state needs to be updated. The first indication field is a second value, which is used to determine that the TCI codepoint does not contain a joint TCI state; or The first indication field is a second value, which is used to determine that the TCI codepoint contains a joint TCI state, and the PL offset corresponding to the contained joint TCI state does not need to be updated. The first value and the second value are one of 0 and 1, and the first value is different from the second value.

36. The terminal of any one of claims 33-35, wherein, The first MAC CE has at least one second indication field, and the second indication field is used to indicate that the update value of the PL offset corresponding to the joint TCI state is a positive value or a negative value.

37. The terminal according to claim 36, characterized by The indication field corresponding to the update value in the first MAC CE includes at least one of the following: 1-bit second indication field, 3 reserved bits, and 4-bit indication field, the 4-bit indication field is used to indicate an absolute value of the update value; 3 reserved bits and 5-bit indication field, the 5-bit indication field is used to indicate a numerical value of the update value; 1-bit second indication field and 7-bit indication field, the 7-bit indication field is used to indicate a numerical value of the update value; 8-bit indication field, the 8-bit indication field is used to indicate a numerical value of the update value; 4-bit indication field, the 4-bit indication field is used to indicate an absolute value of the update value.

38. A network device, comprising: Comprise: A transceiver module is configured to send first information to a terminal, the first information comprising information indicating a joint transmission configuration indication state (joint TCI state) supporting multi-transmission reception point (M-TRP) transmission; The first information is used to update a first configuration, and the first configuration is used to determine a path loss offset (PL offset) corresponding to an uplink only (UL-only) transmission reception point (TRP).

39. The network device of claim 38, wherein, The first configuration includes at least one of the following: A first joint transmission configuration indication state (joint TCI state) is configured by radio resource control (RRC) signaling; A second joint TCI state is activated by a medium access control (MAC) control element (CE) indication; a third joint TCI state, which is indicated to be applied by downlink control information (DCI) or jointly indicated by DCI and RRC signaling.

40. The network device according to any of claims 38-39, wherein, The first information includes a first MAC CE.

41. The network device of claim 40, wherein, An indication field in the first MAC CE is used to indicate an updated value of the PL offset.

42. The network device of claim 41, wherein, The number of bits used in the indication field is determined according to an indication range and an indication step of the PL offset.

43. The network device of claim 42, wherein, The indication step includes one of the following: 1 dB; 2 dB; 4 dB.

44. The network device of any one of claims 40-43, wherein at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value; or 1 bit of an indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and 4 least significant bits (LSBs) of an indication field in the first MAC CE are used to indicate an absolute value of the updated value; or at least 5 bits of an indication field in the first MAC CE are used to indicate a numerical value of the updated value, and a most significant bit (MSB) of an indication field in the first MAC CE is used to indicate a positive or negative value of the updated value, and an LSB of an indication field in the first MAC CE is used to indicate an absolute value of the updated value.

45. The network device according to any of claims 40-44, wherein, The first MAC CE has at least one first indication field, which is used to indicate whether at least one joint TCI state corresponding to a TCI codepoint is subject to PL offset updating.

46. The network device of claim 45, wherein, A signaling length of the first MAC CE is determined by the first indication field, which is determined by one of the following: a first number, which is used to represent a number of TCI state codepoints; a second number, which is used to represent a number of joint TCI states corresponding to the TCI state codepoints that need to update the PL offset. 47.The network device according to any one of claims 45 to 46, characterized in that, The first indication field is a first value, which is used to determine that a TCI codepoint includes a joint TCI state, and the PL offset corresponding to the included joint TCI state needs to be updated; or The first indication field is a second value, which is used to determine that a TCI codepoint does not include a joint TCI state; or The first indication field is a second value, which is used to determine that a TCI codepoint includes a joint TCI state, and the PL offset corresponding to the included joint TCI state does not need to be updated. The first value and the second value are one of 0 and 1, and the first value is different from the second value. 48.The network device according to any one of claims 45 to 47, characterized in that, The first MAC CE has at least one second indication field, which is used to indicate whether an updated value of the PL offset corresponding to a joint TCI state is a positive value or a negative value.

49. The network device of claim 48, wherein, The indication field corresponding to the updated value in the first MAC CE includes at least one of the following: 1 bit of the second indication field, 3 reserved bits, and 4 bits of an indication field, the 4 bits of the indication field being used to indicate an absolute value of the update value; 3 reserved bits and 5 bits of an indication field, the 5 bits of the indication field being used to indicate a numerical value of the update value; 1 bit of the second indication field and 7 bits of an indication field, the 7 bits of the indication field being used to indicate a numerical value of the update value; 8 bits of an indication field, the 8 bits of the indication field being used to indicate a numerical value of the update value; 4 bits of an indication field, the 4 bits of the indication field being used to indicate an absolute value of the update value.

50. A communications device, characterized by comprise: one or more processors; wherein the processor is configured to perform the method of any one of claims 1 to 24.

51. A communication system, characterized by comprise a terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1 to 12, and the network device is configured to implement the method of any one of claims 13 to 24.

52. A computer storage medium, wherein, The computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor, and can implement the method of any one of claims 1 to 24.

53. A computer program product comprising a computer program, which, when executed by a processor, can implement the method of any one of claims 1 to 24.

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