Communication method, communication device and communication system

Abstract

The invention provides a communication method, communication equipment and a communication system, and relates to the technical field of communication. The method comprises the following steps: receiving first information sent by network equipment and updating first configuration according to the first information for a terminal which supports united TCI state configuration and is configured into a unified transmission configuration indication mode by the network equipment; wherein the first configuration is used for determining the PL offset corresponding to the UL-only TRP. By applying the scheme of the embodiment of the invention, the PL offset corresponding to the UL-only TRP can be updated.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, communication equipment and communication system. Background Art

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

[0003] The present disclosure proposes a communication method, a communication device and a communication system, which can update the path loss offset corresponding to the uplink (UL-only) transmission and receiving point (Transmission and Receiving Point, TRP) for a terminal that is configured with a unified transmission configuration indication state (unified TCI state) and is configured by a network device as a unified transmission configuration indication mode.

[0004] A first aspect embodiment of the present disclosure provides a communication method, which is executed by a terminal, wherein the terminal supports a unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, the method comprising: receiving first information sent by a network device, the first information comprising information indicating a unified TCI state that supports single transmission reception point (S-TRP) transmission; updating a first configuration according to the first information; wherein the first configuration is used to determine a PL offset corresponding to a UL-only TRP.

[0005] A second aspect embodiment of the present disclosure provides a communication method, which is executed by a network device, and the method includes: sending first information to a terminal, the terminal supports a unified TCI state configuration and is configured by the network device as a unified transmission configuration indication mode; wherein the first information includes information indicating a unified TCI state that supports S-TRP transmission, the first information is used to update a first configuration, and the first configuration is used to determine the PLoffset corresponding to the UL-only TRP.

[0006] An embodiment of the third aspect of the present disclosure provides a communication method, including: a network device sends first information to a terminal, the first information including information indicating a unified TCI state that supports S-TRP transmission, the terminal supports the unified TCI state configuration and is configured by the network device as a unified transmission configuration indication method; the terminal receives the first information and updates a first configuration based on the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0007] An embodiment of the fourth aspect of the present disclosure provides a terminal, which supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication method, including: a transceiver module, configured to receive first information sent by the network device, the first information including information indicating a unified TCI state supporting S-TRP transmission; a processing module, configured to update a first configuration according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-onlyTRP.

[0008] The fifth aspect embodiment of the present disclosure provides a network device, including: a transceiver module, configured to send first information to a terminal, the first information including information indicating a unified TCI state that supports S-TRP transmission, the terminal supports the unified TCI state configuration and is configured by the network device as a unified transmission configuration indication method; wherein 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.

[0009] A sixth aspect embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is used to execute the method as described in the first aspect embodiment, or to execute the method as described in the second aspect embodiment.

[0010] A seventh aspect embodiment of the present disclosure provides a communication system, including: a terminal and a network device; the terminal executes the method as described in the first aspect embodiment, and the network device executes the method as described in the second aspect embodiment.

[0011] An eighth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method described in the first aspect embodiment or the second aspect embodiment can be implemented.

[0012] A ninth aspect embodiment of the present disclosure provides a computer program product, wherein the computer program product stores a computer program; after the computer program is executed by a processor, it can implement the method described in the first aspect embodiment or the second aspect embodiment.

[0013] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] Figure 1 is a schematic diagram of an example of a MAC CE;

[0016] Figure 2 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0017] Figure 3 A flow chart of a communication method according to an embodiment of the present disclosure;

[0018] Figure 4 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0019] Figure 5 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0020] Figure 6 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0021] Figure 7 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0022] Figure 8 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0023] Fig. 9 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0024] Fig.10 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0025] Fig.11 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0026] Fig.12 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0027] Fig.13is a schematic diagram of an example according to an embodiment of the present disclosure;

[0028] Fig.14 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0029] Fig.15 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0030] Fig.16 is a schematic diagram of an example according to an embodiment of the present disclosure;

[0031] Fig.17 A flow chart of a communication method according to an embodiment of the present disclosure;

[0032] Fig.18 A flow chart of a communication method according to an embodiment of the present disclosure;

[0033] Fig.19 is a block diagram of a terminal according to an embodiment of the present disclosure;

[0034] Fig. 20 is a block diagram of a network device according to an embodiment of the present disclosure;

[0035] Fig.21 is a structural schematic diagram of a communication device according to an embodiment of the present disclosure;

[0036] Fig. 22 A schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limitations on the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other without conflict.

[0038] To facilitate understanding, the terms involved in the embodiments of the present disclosure are first introduced.

[0039] 1. Transmission and Receiving Point (TRP)

[0040] As the frequency band increases, relatively dense access point deployment is also required to ensure network coverage. In the high-frequency band, as the integration of active antenna equipment increases, modular active antenna arrays will be more inclined to be used. The antenna array of each TRP can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. Antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will be more significant. In this case, from the perspective of ensuring the robustness of link connections, it is also possible to use the collaboration between multiple TRPs or panels to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0041] According to the mapping relationship between the transmission signal stream and multiple TRPs / panels, the multi-point coordinated transmission technology can be divided into coherent and incoherent transmission. Among them, in coherent transmission, each data layer will be mapped to multiple TRPs / panels through a weighted vector. In incoherent transmission, each data stream is only mapped to part of the TRPs / panels. Coherent transmission has higher requirements for the synchronization between transmission points and the transmission capacity of the backhaul link, and is therefore more sensitive to many non-ideal factors in actual deployment conditions. Relatively speaking, incoherent transmission is less affected by the above factors, so it is the key consideration for multi-point transmission technology. The uplink PUSCH transmission is transmitted to the TRP direction of multiple base stations. In R17, the coordinated transmission under the time division multiplexing (TDM) transmission mode is mainly standardized. Different repetitions of the same information on the physical uplink shared channel (PUSCH) are sent to different TRPs of the base station through different transmission opportunities (TO) in the time domain. This method has relatively low requirements on terminal capabilities, does not require the ability to support simultaneous beam transmission, and has a large transmission delay.

[0042] For the uplink, the spatial characteristics of the channels actually passed through by PUSCH channels facing different TRPs may be very different. Therefore, it is believed that the quasi-co-located Doppler frequency shift characteristics (QCL-D) of PUSCH channels in different sending directions are different.

[0043] R15 / 16 did not consider the multiple transmission reception point (M-TRP) scenario, and the uplink was transmitted in a single TRP. R17 enhanced the M-TRP uplink transmission under single downlink control information (S-DCI), and the uplink PUSCH transmission was transmitted in the TRP direction of multiple base stations. In R17, the collaborative transmission under the TDM transmission mode was mainly standardized. Different repetitions of the same information on the PUSCH were sent to different collaborative TRPs of the base station through different transmission opportunities (Transmission Occasion, TO) in the time domain. This method has relatively low requirements on terminal capabilities. Each TO only needs to send PUSCH / physical uplink control channel (PUCCH) in one TRP direction, so it is not required to support the ability to send beams simultaneously, and the transmission cycle is relatively large.

[0044] In the non-codebook and codebook-based M-TRP transmission in R17, the sounding reference signal resource indication (SRI) field in the DCI indicates the SRS resources in the sounding reference signal (SRS) resource set. Since R17 supports two SRS resource sets, in the non-codebook-based M-TRP PUSCH repeated transmission, the DCI format 0_1 / 0_2 contains two SRI fields associated with the two SRS resource sets. Each SRI field indicates SRI for a TRP. The design of the first SRI field is based on the R15 / 16 framework, and all repeated transmissions use the same number of layers.

[0045] For non-codebook based transmission, the first SRI field is used to determine the elements in the second SRI field, and the second SRI field only contains the SRI combinations associated with the number of layers indicated by the first SRI field. The number of bits N2 of the second SRI field is determined by the maximum number of code points per rank among all ranks associated with the first SRI field.

[0046] In codebook-based M-TRP PUSCH repetitive transmission, two transport precoding matrix indication (TPMI) fields are indicated in DCI format 0_1 / 0_2, where the first TPMI field is designed the same as the TPMI field in R15 / 16 (including TPMI index and number of layers), and the second TPMI field only contains the second TPMI index, and the number of layers is the same as the number of layers indicated by the first TPMI field. The first TPMI field is used to determine the elements in the second TPMI field, and the second TPMI field only contains the TPMI associated with the number of layers indicated by the first TPMI field. The number of bits M2 of the second TPMI field is determined by the maximum number of code points per rank among all ranks associated with the first TPMI field.

[0047] 2. Transmission Configuration Indication State (TCI state)

[0048] The unified transmission configuration indication state (unified TCI state) is the downlink TCI state or joint TCI state indicated by the terminal for determining the downlink transmission beam, and the indicated uplink TCI state or joint TCI state is used to determine the uplink beam, where the downlink beam refers to the user-specific physical downlink shared channel (PDSCH) and the beam of all / part of the PDCCH in a carrier (Carrier Component, CC), and the uplink beam refers to the uplink transmit spatial filter based on the dynamically authorized / configurable authorized PUSCH and all or part of the dedicated PUCCH resources of a CC.

[0049] A TCI state pool is used for the downlink TCI state and the joint TCI state in the independent beam indication. In the case of joint beam indication, the TCI field only needs to indicate one joint TCI state, which is used to determine the uplink and downlink transmission beams. However, in the case of independent beam indication, the downlink transmission beam and the uplink transmission beam are no longer the same, and they need to be indicated separately. In addition, there are three scenarios: it is necessary to indicate the downlink transmission beam and the uplink transmission beam to the user at the same time, it is necessary to indicate the downlink transmission beam to the user, or it is necessary to indicate the uplink transmission beam to the user. For this reason, it is stipulated that in the case of independent beam indication, the mapping relationship between the TCI field and the TCI state in DCI format 1_1 / 1_2 is as follows:

[0050] One code point in the TCI field can correspond to both a downlink TCI state and an uplink TCI state;

[0051] One code point in the TCI field corresponds to only one downlink TCI state, and the user keeps the current UL TCI state unchanged;

[0052] One code point in the TCI field corresponds to only one uplink TCI state, and the user keeps the current DL TCI state unchanged.

[0053] MAC CE is used to activate or deactivate the unified TCI state, that is, unified TCI state MAC CE, which supports joint transmission configuration indication state (joint TCI state) mode and independent transmission configuration indication state (separate TCI state) configuration. Figure 1As shown, it is a unified TCI stateMAC CE, where CORESET Pool ID: This field indicates that the mapping between the activated TCI state and the TCI state ID in the DCI transmission configuration indication field is specific to the ControlResourceSetId configured by the CORESET Pool ID, as specified in TS 38.331 [5]. This field is set to 1 to indicate that the TCI state is assigned to the CORESET pool ID equal to 1, otherwise the TCI state is assigned to the CORESET pool ID equal to 0. If no more than one coresetPoolIndex value is configured for any CORESET in the partial bandwidth (BWP), the R bit is present;

[0054] Serving Cell ID: This field indicates the identity of the serving cell applicable to this MAC-CE. This field is 5 bits long. If the indicated serving cell is configured as part of simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 as specified in TS 38.331 [5], this MAC-CE applies to all serving cells in these lists;

[0055] Downlink BWP ID (DL BWP ID): This field indicates the downlink BWP to which the MAC-CE applies, as the code point of the DCI bandwidth part indication field, as specified in TS 38.212 [9]. This field is 2 bits long;

[0056] Uplink BWP ID (UL BWP ID): This field indicates the uplink BWP to which the MAC-CE applies, as the code point of the DCI bandwidth part indication field, as specified in TS 38.212 [9]. If the value of unifiedTCI-StateType in the serving cell indicated by the serving cell ID is joint, this field is considered a reserved bit. This field is 2 bits long;

[0057] Pi: This field indicates whether each TCI code point contains multiple TCI states or a single TCI state. If the Pi field is set to 1, it means that the i-th TCI code point contains both the downlink TCI state and the uplink TCI state. If the Pi field is set to 0, it means that the i-th TCI code point contains only the downlink / joint TCI state or the uplink TCI state. The code point to which the TCI state is mapped is determined by its ordinal position in all TCI state ID fields;

[0058] D / U: This field indicates whether the TCI state ID in the same byte is for the combined / downlink or uplink TCI state. If this field is set to 1, the TCI state ID in the same byte is for the combined / downlink. If this field is set to 0, the TCI state ID in the same byte is for the uplink;

[0059] TCI state ID: This field indicates the TCI state identified by TCI-StateId, as specified in TS 38.331 [5]. If D / U is set to 1, a 7-bit TCI state ID, i.e., TCI-StateId, is used, as specified in TS 38.331 [5]. If D / U is set to 0, the most significant bit of the TCI state ID is considered a reserved bit, and the remaining 6 bits indicate TCI-UL-State-Id, as specified in TS 38.331 [5]. The maximum number of activated TCI states is 16;

[0060] R: Reserved bit, can be set to 0.

[0061] 3. Uplink only (UL-only)

[0062] In multi-TRP transmission, future research will continue to enhance uplink transmission. The main research is on the multi-TRP deployment scenario of downlink S-TRP / uplink M-TRP. In this scenario, by deploying multiple uplink receiving points, the uplink coverage and throughput can be further improved at a lower network deployment cost, while avoiding complex network planning and downlink interference management coordination issues.

[0063] Improve uplink (UL) coverage and throughput by deploying heterogeneous networks to achieve asymmetric multi-TRP transmission (single TRP for downlink / multiple TRP for uplink). Since the rated power of macro gNB and micro node UL TRP is different, the terminal can receive downlink (DL) transmission from macro gNB, but transmit UL to macro gNB or non-co-located micro node UL TRP to maximize UL throughput. As an option to further reduce energy consumption, micro nodes can reduce or even turn off DL transmission. Unlike SmallCell, this node is only used for uplink reception. The specific TCI state indication method used depends on the result of beam determination and is configured by the network to the terminal. Currently, the protocol can only support configuring the current beam indication as one of the joint TCI state mode and the independent TCI state mode. For example, 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+mmWave frequency band (FR2).

[0064] For terminals that support unified TCI state configuration, the network device configures the unified transmission configuration indication unified TCI mode. For FR1: a joint TCI state or {a downlink transmission configuration indication state (DL TCI state) + an uplink transmission configuration indication state (UL TCI state)} can be applied; for FR2: {a DL TCI state + a UL TCI state} can be applied.

[0065] In the UL-only scenario, the cell includes a 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 and configure / indicate the beam information for data / signal transmission to the terminal. The uplink M-TRP transmission needs to be completed in collaboration between the macro gNB and the UL-only TRP, or between different UL-only TRPs.

[0066] The embodiments of the present disclosure provide a communication method, a communication device, and a communication system.

[0067] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a terminal, wherein the terminal supports a unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, and the method includes: receiving first information sent by the network device, the first information including information indicating a unified TCI state that supports S-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.

[0068] By applying the technical solution of the present disclosure, for a terminal that supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, it is possible to update the PL offset corresponding to the UL-only TRP.

[0069] In conjunction with some embodiments of the first aspect, at least one of the following includes the first configuration:

[0070] a first joint transmission configuration indication state (joint TCI state), wherein the first joint TCI state is configured through radio resource control (Radio Resource Control, RRC) signaling;

[0071] a first uplink transmission configuration indication state (UL TCI state), wherein the first UL TCI state is configured through RRC signaling;

[0072] a second joint TCI state, wherein the second joint TCI state is activated by indicating a medium access control (MAC) control element (CE);

[0073] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0074] a third joint TCI state, where the third joint TCI state is indicated by downlink control information (DCI) or by both DCI and RRC signaling;

[0075] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0076] In combination with some embodiments of the first aspect, the first information includes a first MAC CE.

[0077] In combination with some embodiments of the first aspect, the indication field in the first MAC CE is used to indicate the updated value of the PLoffset.

[0078] 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 size of the PL offset.

[0079] In conjunction with some embodiments of the first aspect, the indicated step size includes one of the following:

[0080] 1dB; 2dB; 4dB.

[0081] In combination with some embodiments of the first aspect, the at least 5-bit indication field in the first MAC CE is used to indicate a numerical value of the update value; or,

[0082] The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit (LSB) 4-bit indication field is used to indicate the absolute value of the update value; or,

[0083] The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit (MSB) indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

[0084] In combination with some embodiments of the first aspect, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether a TCI state corresponding to a TCI codepoint performs a PL offset update.

[0085] In combination with some embodiments of the first aspect, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0086] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0087] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0088] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0089] In combination with some embodiments of the first aspect, the first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and a PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0090] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0091] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0092] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0093] In combination with 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 whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0094] In combination with 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:

[0095] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0096] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0097] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0098] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0099] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0100] In second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: sending first information to a terminal, the terminal supports a unified TCI state configuration and is configured by the network device as a unified transmission configuration indication mode; wherein the first information includes information indicating a unified TCI state that supports S-TRP transmission, the first information is used to update a first configuration, and the first configuration is used to determine the PLoffset corresponding to the UL-only TRP.

[0101] By applying the technical solution of the present disclosure, for a terminal that supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, it is possible to update the PL offset corresponding to the UL-only TRP.

[0102] In conjunction with some embodiments of the second aspect, at least one of the following includes the first configuration:

[0103] a first joint TCI state, wherein the first joint TCI state is configured through RRC signaling;

[0104] A first UL TCI state, wherein the first UL TCI state is configured through RRC signaling;

[0105] a second joint TCI state, where the second joint TCI state is activated as indicated by the MAC CE;

[0106] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0107] a third joint TCI state, where the third joint TCI state is applied by DCI indication, or is applied by both DCI and RRC signaling;

[0108] The third UL TCI state is indicated by DCI or is indicated by DCI and RRC signaling.

[0109] In combination with some embodiments of the second aspect, the first information includes a first MAC CE.

[0110] In combination with some embodiments of the second aspect, the indication field in the first MAC CE is used to indicate the updated value of the PLoffset.

[0111] In combination with some embodiments of the second aspect, the number of bits used in the indication field is determined according to the indication range and indication step size of the PL offset.

[0112] In conjunction with some embodiments of the second aspect, the indicated step size includes one of the following:

[0113] 1dB; 2dB; 4dB.

[0114] In combination with some embodiments of the second aspect, the at least 5-bit indication field in the first MAC CE is used to indicate a numerical value of the update value; or,

[0115] The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the LSB 4-bit indication field is used to indicate the absolute value of the update value; or,

[0116] The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the update value, the MSB indication field is used to indicate the positive or negative value of the update value, and the LSB indication field is used to indicate the absolute value of the update value.

[0117] In combination with some embodiments of the second aspect, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint performs a PL offset update.

[0118] In combination with some embodiments of the second aspect, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0119] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0120] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0121] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0122] In combination with some embodiments of the second aspect, the first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and a PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0123] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0124] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0125] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0126] In combination with some embodiments of the second aspect, the first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0127] In combination with some embodiments of the second aspect, the indication field corresponding to the update value in the first MAC CE includes at least one of the following:

[0128] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0129] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0130] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0131] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0132] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0133] In the third aspect, an embodiment of the present disclosure proposes a communication method, including: a network device sends first information to a terminal, the first information includes information indicating a unified TCI state that supports S-TRP transmission, the terminal supports the unified TCI state configuration and is configured by the network device as a unified transmission configuration indication method; the terminal receives the first information and updates a first configuration based on the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0134] In a fourth aspect, an embodiment of the present disclosure proposes a terminal, which supports a unified TCI state configuration and is configured by a network device as a unified transmission configuration indication method, including: a transceiver module, configured to receive first information sent by the network device, the first information including information indicating a unified TCI state that supports S-TRP transmission; a processing module, configured to update 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.

[0135] In conjunction with some embodiments of the fourth aspect, at least one of the following includes the first configuration:

[0136] a first joint transmission configuration indication state (joint TCI state), wherein the first joint TCI state is configured through radio resource control (Radio Resource Control, RRC) signaling;

[0137] a first uplink transmission configuration indication state (UL TCI state), wherein the first UL TCI state is configured through RRC signaling;

[0138] a second joint TCI state, wherein the second joint TCI state is activated by indicating a medium access control (MAC) control element (CE);

[0139] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0140] a third joint TCI state, where the third joint TCI state is indicated by downlink control information (DCI) or by both DCI and RRC signaling;

[0141] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0142] In combination with some embodiments of the fourth aspect, the first information includes a first MAC CE.

[0143] In combination with some embodiments of the fourth aspect, the indication field in the first MAC CE is used to indicate the updated value of the PLoffset.

[0144] In combination with some embodiments of the fourth aspect, the number of bits used in the indication field is determined according to the indication range and indication step size of the PL offset.

[0145] In conjunction with some embodiments of the fourth aspect, the indicated step size includes one of the following:

[0146] 1dB; 2dB; 4dB.

[0147] In combination with some embodiments of the fourth aspect, the at least 5-bit indication field in the first MAC CE is used to indicate a numerical value of the update value; or,

[0148] The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit (LSB) 4-bit indication field is used to indicate the absolute value of the update value; or,

[0149] The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit (MSB) indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

[0150] In combination with some embodiments of the fourth aspect, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint performs a PL offset update.

[0151] In combination with some embodiments of the fourth aspect, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0152] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0153] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0154] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0155] In combination with some embodiments of the fourth aspect, the first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and a PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0156] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0157] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0158] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0159] In combination with 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 whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0160] In combination with 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:

[0161] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0162] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0163] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0164] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0165] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0166] In the fifth aspect, an embodiment of the present disclosure proposes a network device, including: a transceiver module, configured to send first information to a terminal, the first information including information indicating a unified TCI state that supports S-TRP transmission, the terminal supports the unified TCI state configuration and is configured by the network device as a unified transmission configuration indication method; wherein 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.

[0167] In conjunction with some embodiments of the fifth aspect, at least one of the following includes the first configuration:

[0168] a first joint transmission configuration indication state (joint TCI state), wherein the first joint TCI state is configured through radio resource control (Radio Resource Control, RRC) signaling;

[0169] a first uplink transmission configuration indication state (UL TCI state), wherein the first UL TCI state is configured through RRC signaling;

[0170] a second joint TCI state, wherein the second joint TCI state is activated by indicating a medium access control (MAC) control element (CE);

[0171] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0172] a third joint TCI state, where the third joint TCI state is indicated by downlink control information (DCI) or by both DCI and RRC signaling;

[0173] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0174] In combination with some embodiments of the fifth aspect, the first information includes a first MAC CE.

[0175] In combination with some embodiments of the fifth aspect, the indication field in the first MAC CE is used to indicate the updated value of the PLoffset.

[0176] In combination with some embodiments of the fifth aspect, the number of bits used in the indication field is determined according to the indication range and indication step size of the PL offset.

[0177] In conjunction with some embodiments of the fifth aspect, the indicated step size includes one of the following:

[0178] 1dB; 2dB; 4dB.

[0179] In combination with some embodiments of the fifth aspect, the at least 5-bit indication field in the first MAC CE is used to indicate the value of the updated value; or,

[0180] The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit (LSB) 4-bit indication field is used to indicate the absolute value of the update value; or,

[0181] The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit (MSB) indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

[0182] In combination with some embodiments of the fifth aspect, the first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint performs a PL offset update.

[0183] In combination with some embodiments of the fifth aspect, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0184] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0185] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0186] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0187] In combination with some embodiments of the fifth aspect, the first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and a PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0188] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0189] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0190] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0191] In combination with 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 whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0192] In combination with 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:

[0193] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0194] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0195] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0196] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0197] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0198] In the sixth aspect, an embodiment of the present disclosure proposes a communication device, which may be a terminal or a network device, comprising: one or more processors; wherein the processor of the terminal is used to execute the method described in the embodiment of the first aspect, and the processor of the network device is used to execute the method described in the embodiment of the second aspect.

[0199] In a seventh aspect, an embodiment of the present disclosure proposes a communication system, comprising: a terminal and a network device; the terminal executes the method described in the embodiment of the first aspect, and the network device executes the method described in the embodiment of the second aspect.

[0200] In an eighth aspect, an embodiment of the present disclosure proposes a computer storage medium, wherein the computer storage medium stores computer executable instructions; after the computer executable instructions are executed by a processor, the method described in the embodiment of the first aspect or the embodiment of the second aspect can be implemented.

[0201] In a ninth aspect, an embodiment of the present disclosure proposes a computer program product, including a computer program. After the computer program is executed by a processor, it can implement the method described in the embodiment of the first aspect or the embodiment of the second aspect.

[0202] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the embodiment of the first aspect or the embodiment of the second aspect.

[0203] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or the chip system comprises a processing circuit configured to execute the method according to the embodiment of the first aspect or the embodiment of the second aspect.

[0204] It is understandable that the above terminal devices, network devices, communication systems, and storage media are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here.

[0205] The embodiments of the present disclosure provide a communication method, a communication device, and a communication system. In some embodiments, the terms such as communication method, information processing method, information sending method, information receiving method, etc. can be replaced with each other, the terms such as communication device, information processing device, information sending device, information receiving device, etc. can be replaced with each other, and the terms such as information processing system, communication system, information sending system, information receiving system, etc. can be replaced with each other.

[0206] The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0207] In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

[0208] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0209] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression.

[0210] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0211] In some embodiments, the terms “at least one of,” “at least one of,” “at least one of,” “one or more,” “a plurality of,” “multiple,” etc. may be used interchangeably.

[0212] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include the situation where any multiple of A, B, C… exist in any combination, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0213] In some embodiments, the description methods such as "in one case A, in another case B", "in response to one case A, in response to another case B", etc. may include the following technical solutions according to the situation: A is executed independently of B, that is, in some embodiments A; B is executed independently of A, that is, in some embodiments B; A and B are selectively executed, that is, selected from A and B in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches such as A, B, C, etc., it is similar to the above.

[0214] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields", and the "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

[0215] In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0216] In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

[0217] In some embodiments, terms such as "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", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0218] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device (IoT terminal device)", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0219] In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0220] In some embodiments, the terms "access network IoT terminal device (AN IoT terminal device)", "radio access network IoT terminal device (RAN IoT terminal device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node (node)", "access point (access point)", "transmission point (TP)", "reception point (reception point, RP)", "transmission / reception point (transmission / reception point, TRP)", "panel (panel)", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell (cell)", "macro cell (macro cell)", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell group)", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be interchangeable.

[0221] In some embodiments, the terms "terminal", "terminal device (terminal IoT terminal device)", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device (mobile IoT terminal device), wireless device (wireless IoT terminal device), wireless communication device (wireless communication IoT terminal device), remote device (remote IoT terminal device), mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, narrowband Internet of Things (NB-IoT) device, etc. can be replaced with each other.

[0222] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by the communication between multiple terminals (for example, it can also be called device-to-device (IoT terminal device-to-IoT terminal device, D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, the language such as "uplink" and "downlink" can also be replaced by the language corresponding to the communication between terminals (for example, "side"). For example, the uplink channel, the downlink channel, etc. can be replaced by the side channel, and the uplink, the downlink, etc. can be replaced by the side link.

[0223] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal.

[0224] In some embodiments, the acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0225] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0226] In some embodiments, the threshold mentioned in this embodiment may be a numerical value, a constant, or some fixed value, etc.

[0227] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.

[0228] The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0229] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0230] The communication method, communication device and communication system provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0231] Figure 2 A structural diagram of a communication system according to an embodiment of the present disclosure is shown. Figure 2 As shown, the system architecture may include a terminal 11, a network device 12, and a UL-only TRP.

[0232] In some embodiments, terminal 11 supports unified TCI state configuration.

[0233] In some embodiments, the terminal 11 is configured by the network device as a unified transmission configuration indication (unified TCI) mode.

[0234] In some examples, the terminal 11 may be a terminal device (terminal), a user equipment (UE), a mobile station (MS), a mobile terminal device (MT), etc. The terminal 11 may also be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (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, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal 11.

[0235] In some embodiments, the network device 12 may be an entity on the network side for transmitting or receiving signals. For example, the network device may be a base station or a core network node or a server, etc. For example, the network device may specifically be a communication satellite, an evolved NodeB (eNB), a transmission 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, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiments of the present disclosure may be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of the network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0236] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0237] The following embodiments of the present disclosure can be applied to Figure 2 The communication system or part of the subject shown is not limited thereto. Figure 2 The various entities shown are examples, and the communication system may include Figure 2 All or part of the subject, and may also include Figure 2 For entities other than the above, the number and form of each entity are arbitrary, and the connection relationship between the entities is an example. The entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.

[0238] Embodiments of the present disclosure may 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 (registered trademark), Public Land Mobile Network (PLMN) network, device-to-device (IoT terminal device-to-IoT terminal device, D2D) system, machine-to-machine (Machine to Machine, M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems using other communication methods, and next-generation systems based on them. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.

[0239] When the terminal sends an uplink channel / signal, uplink power control is required. Since only the macro gNB (network device) has a downlink path loss reference signal (PL RS), and the UL-only TRP has no downlink signal, how to estimate the path loss for the UL-only TRP is a problem that needs to be solved. This problem can be solved by considering the PL offset parameter estimated relative to the macro gNB for the UL-only TRP for the corresponding PL calculation to achieve the corresponding uplink power control. There are two types of solutions for terminal path loss estimation for UL-only TRP:

[0240] Method 1:

[0241] Perform downlink path loss estimation based on the DL PL RS configuration, and obtain the path loss estimation value in the UL TRP direction through the PL offset configuration value associated with the TCI state pointing to the UL-only TRP, and use it for uplink channel / signal transmission;

[0242] PL_UL = PL_DL - PL_offset;

[0243] Method 2:

[0244] The initial value of uplink path loss PL_UL is calculated by the initial value of PL offset in method 1, and PL_offset' relative to the change of PL_UL is updated by sending SRS to UL TRP. The new PL_UL is calculated by the following formula:

[0245] PL_UL'=PL_UL+PL_offset';

[0246] In the UL-only scenario, the cell includes a macro gNB and multiple UL-only TRP reception points. In order to support downlink S-TRP / uplink M-TRP transmission within the cell, the base station needs to perform uplink / downlink beam management and indicate the beam information used for data / signal transmission to the terminal. The uplink M-TRP transmission is completed in collaboration between the macro gNB and UL-only TRP multiple nodes.

[0247] When the terminal performs uplink channel / signal transmission, it can determine the DL PL RS configured by the network and the PL offset configured with the associated TCI state to implement PL calculation for UL-only TRP transmission. How to update the PLoffset is a technical problem that needs to be solved.

[0248] In order to solve the above problem, by applying the solution of the embodiment of the present disclosure, for a terminal that supports the unified TCI state configuration and is configured by the network device as a unified transmission configuration indication mode, the first information sent by the network device can be received, and the first configuration can be updated according to the first information; wherein the first configuration is used to determine the PLoffset corresponding to the UL-only TRP. In addition, the PL offset corresponding to the UL-only TRP can be updated.

[0249] Further, in order to illustrate the specific implementation process of the above communication system, Figure 3 A schematic diagram of a communication method according to an embodiment of the present disclosure is shown. The method is applied to the above communication system, such as Figure 3 As shown, the following steps may be included:

[0250] Step S201: The network device sends first information to the terminal.

[0251] In some embodiments, the terminal receives first information sent by the network device.

[0252] In some embodiments, the terminal supports unified TCI state configuration. The terminal can configure and use the unified transmission configuration indication (unified TCI state) characteristics in the 3GPP New Radio (NR) Release 17 () standard, and supports DL S-TRP / UL S-TRP transmission.

[0253] In some embodiments, the terminal is configured by the network device as a unified transmission configuration indication (unified TCI) mode, and the uplink and downlink support S-TRP indication, that is, indicating the TCI state of one direction. The network device configures the unified TCI state as a joint TCI state mode or a separate TCI state mode, wherein the TCI state configured in the joint TCI state mode can be used for both uplink and downlink transmission, and the separate TCI state mode corresponds to the DL TCI state for downlink transmission or the UL TCI state for uplink transmission, or independently configures the DL TCI state and the UL TCI state at the same time. The joint TCI state and the DL TCI state share a TCI state configuration pool / set, and the UL TCI state configures a TCI state configuration pool / set.

[0254] In some embodiments, the cell includes a macro gNB and multiple UL-only TRP receiving points, that is, asymmetric multi-TRP transmission (downlink single TRP / uplink multiple TRP). Through the downlink TRP, that is, the macro gNB, the PL offset corresponding to the UL-only TRP can be configured to the terminal. When the terminal performs uplink channel / signal transmission, it can be determined that the downlink path loss reference signal (DL PL RS) configured by the network and the configured PL offset are used to calculate the path loss (PL) sent in the UL-only TRP direction. When the PL offset corresponding to the UL-only TRP needs to be updated, the network device can send a first message to the terminal to indicate the update of the PL offset parameter corresponding to the UL-only TRP.

[0255] In some embodiments, the first information includes relevant information indicating the unified TCI state supporting S-TRP transmission, such as whether to activate or deactivate the unified TCI state supporting S-TRP transmission, whether to update the corresponding PL offset parameters, and other related information.

[0256] In some embodiments, the first information may be used to indicate updating of a PL offset parameter corresponding to a UL-only TRP, and the first information may include at least one of the following:

[0257] Radio Resource Control (RRC) signaling; Downlink Control Information (DCI); Media Access Control (MAC) Control Element (CE); Master Information Block (MIB); System Information Block (SIB), etc.

[0258] Step S202: The terminal updates the first configuration according to the first information.

[0259] In some embodiments, the first configuration may be used to determine the PL offset corresponding to the UL-only TRP. The first configuration may include a PL offset parameter configured corresponding to the UL-only TRP, and the terminal may update the first configuration according to the first information, thereby updating the PL offset corresponding to the UL-only TRP.

[0260] In some embodiments, at least one of the following A1 to A6 includes a first configuration:

[0261] A1. A first joint TCI state, which is configured through radio resource control (RRC) signaling, such as a joint TCI state configured by a network device through RRC signaling, which may be a joint TCI state list, which may include all configured joint TCI states, such as a maximum of 128 joint TCI states. The joint TCI state configured by the RRC signaling may include a first configuration, that is, the PLoffset parameter initially configured for the UL-only TRP. In some examples, the network device may indicate through the first information to update the PL offset parameter in the joint TCIstate configured by the RRC, and the PL offset parameter may be applied to the uplink path loss estimation for the UL-only TRP.

[0262] A2. A first UL TCI state, which is configured through RRC signaling, such as a UL TCI state configured by a network device through RRC signaling, which may be a UL TCI state list, which may include all configured UL TCI states, such as a maximum of 64 UL TCI states. The UL TCI state configured by the RRC may include a first configuration, that is, a PL offset parameter initially configured for the UL-only TRP. In some examples, the network device may indicate through the first information to update the PL offset parameter in the joint TCI state configured by the RRC, and the PL offset parameter may be applied to the uplink path loss estimation for the UL-only TRP.

[0263] A3. A second joint TCI state, the second joint TCI state is activated through a MAC CE indication, such as a network device sending a MAC CE to a terminal, and then indicating the activation of a joint TCI state from a joint TCI state list configured by RRC through a MAC CE, such as a maximum of 8 can be activated, and the activated joint TCI state may include a first configuration, that is, a PL offset parameter corresponding to the UL-only TRP. In some examples, the network device may indicate an update of the PL offset parameter in the activated joint TCI state through the first information, and the PL offset parameter may be applied to the uplink path loss estimation for the UL-only TRP.

[0264] A4, a second UL TCI state, the second UL TCI state is activated by a MAC CE indication, such as a network device sending a MAC CE to a terminal, and then indicating the activation of the UL TCI state from the UL TCI state list configured by the RRC through the MAC CE, such as up to 8 can be activated, and the activated UL TCI state may include the first configuration, that is, the PL offset parameter corresponding to the UL-only TRP. In some examples, the network device may indicate the update of the PL offset parameter in the activated UL TCIstate through the first information, and the PL offset parameter may be applied to the uplink path loss estimation for the UL-only TRP.

[0265] A5. The third joint TCI state is indicated by downlink control information (DCI) or by DCI and RRC signaling. For example, the network device sends DCI to the terminal, and can further indicate the joint TCI state of the current application from the activated joint TCI state; or the network device indicates the current application through DCI and RRC signaling, such as different channels / signals indicate different joint TCIstate methods, physical downlink shared channel (PDSCH) / dynamic grant (DG) physical uplink shared channel (PUSCH) can be indicated by DCI, and sounding reference signal (SRS) or type 1 configuration grant (CG) PUSCH / physical uplink control channel (PUCCH) will configure part / all of the joint TCIstate in the joint TCIstate indicated by the DCI through RRC signaling. The joint TCIstate of the current application may include the first configuration, that is, the PL offset parameter corresponding to the UL-only TRP. In some examples, the network device may instruct, through the first information, to update a PL offset parameter in a currently applied joint TCI state, where the PL offset parameter may be applied to uplink path loss estimation for a UL-only TRP.

[0266] A6. The third UL TCI state is indicated by DCI, or indicated by DCI and RRC signaling. For example, the network device sends DCI to the terminal, and can further indicate the currently applied UL TCI state from the activated UL TCI state; or the network device indicates the currently applied UL TCI state through DCI and RRC signaling, such as different channels / signals indicate different UL TCIstate methods, PDSCH / DGPUSCH can be indicated by DCI, SRS or type 1CG PUSCH / PUCCH will configure part / all of the UL TCIstate in the UL TCIstate indicated by DCI through RRC signaling. The currently applied UL TCI state may include a first configuration, that is, the PL offset parameter corresponding to the UL-only TRP. In some examples, the network device may indicate the update of the PL offset parameter in the currently applied UL TCI state through the first information, and the PL offset parameter can be applied to the uplink path loss estimation for the UL-only TRP.

[0267] The updating of PL offset in this embodiment can be applied to at least one of the above A1 to A6.

[0268] In some embodiments, the first information includes a first MAC CE, which may be a newly designed MAC CE. The network device may send the first MAC CE to the terminal, and further indicate updating the PL offset corresponding to the UL-only TRP through the first MAC CE.

[0269] In some embodiments, the indication field in the first MAC CE may be used to indicate an updated value of the PLoffset corresponding to the UL-only TRP.

[0270] In some embodiments, the number of bits used in the indication field of the first MAC CE may be determined according to the indication range and indication step of the PL offset. For example, the indication range of the PL offset corresponding to the UL-only TRP may be [-A, B], such as the PL offset may be positive or negative, the minimum value may be -A dB, the maximum value may be B dB, and the values ​​of A and B may be set according to actual conditions. The indication step of the PL offset may be the indication granularity of the PL offset.

[0271] In some examples, the indicated step size of the PL offset includes one of the following:

[0272] 1dB; 2dB; 4dB.

[0273] There are many ways to indicate the updated value of PL offset through the indication field in the first MAC CE. Taking the indication step size of PL offset as 4 dB as an example, the following methods B1 to B3 may be included but are not limited to:

[0274] B1. At least a 5-bit indication field in the first MAC CE is used to indicate the numerical value (or actual value, etc.) of the updated value of the PL offset. For example, in the first MAC CE, an indication field of at least 5 bits is used to indicate the numerical value of the updated value of the PL offset corresponding to the UL-only TRP.

[0275] B2. The 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 the least significant bit (Least Significant Bit, LSB) 4-bit indication field is used to indicate the absolute value of the updated value of the PL offset. For example, in the first MAC CE, the 1-bit indication field is used to indicate the positive or negative value of the updated value of the PL offset, such as 1 for a positive value and 0 for a negative value; or 1 for a negative value and 0 for a positive value. On the basis of indicating the positive or negative value of the updated value by the 1-bit indication field, the LSB 4-bit indication field can be used to further indicate the absolute value of the updated value of the PL offset, and then the value of the updated value of the PL offset can be obtained by the positive or negative value and the absolute value.

[0276] B3. At least a 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 the Most Significant Bit (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, an indication field of at least 5 bits 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.

[0277] In some embodiments, more bits may be used to support indication designs with smaller step sizes, such as 1 dB or 2 dB.

[0278] In some embodiments, the first MAC CE has at least one first indication field, and the first indication field can be used to indicate whether the TCI state corresponding to different TCI code points (codepoints) performs PL offset update. For example, in the newly designed first MAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th TCI codepoint needs PL offset update. 1 means update is required, 0 means no update is required; or 1 means no update is required, 0 means update is required.

[0279] In some embodiments, the signaling length of the first MACCE is determined by a first indication field, and the first indication field is determined by one of the following:

[0280] The first number is used to indicate the number of TCI state codepoints;

[0281] The second number is used to indicate the number of joint TCI states that need to update PLoffset corresponding to the TCI state codepoint;

[0282] The third number is used to indicate the number of ULTCI states that need to update PLoffset corresponding to the TCI state codepoint.

[0283] In some examples, the signaling length of the first MACCE is a variable length, and the supported indication length can be determined by the first indication field. For example, when the PL offset of the joint / UL TCI state corresponding to 2 TCI codepoints needs to be updated, the first indication field of 2 bits in 1 byte can be used to update and indicate that the PL offset of the two joint / UL TCI states needs to be updated, and the updated values ​​of the two PL offsets can be indicated by 1 or 2 bytes; when the PL offset of the TCI state corresponding to 10 TCI codepoints needs to be updated, the first indication field of 10 bits in 2 bytes can be used to update and indicate that the PL offset of the 10 TCI states needs to be updated, and the updated values ​​of the 10 PL offsets can be indicated by 5 or 10 bytes.

[0284] In some examples, the signaling length of the first MACCE is a fixed length. For example, the PL offset needs to be updated for each TCI state corresponding to each TCI statecodepoint. Taking the update of the PL offset parameters in the 8 activated joint / UL TCI states as an example, 4 or 8 bytes can be fixedly used to indicate the PL offset update values ​​corresponding to these 8 joint / UL TCI states.

[0285] In some embodiments, the first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated, and the first value is one of 0 and 1.

[0286] In some embodiments, the first indication field is a second value used to determine that the TCI codepoint does not include the joint TCI state and the UL TCI state, the second value is one of 0 and 1, and the first value is different from the second value.

[0287] In some embodiments, the first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated, the second value is one of 0 and 1, and the first value is different from the second value.

[0288] In some examples, the first indication field is a first value used to determine that the TCI codepoint contains a joint / UL TCI state and the corresponding PL offset needs to be updated, and the first indication field is a second value used to determine that the TCI codepoint does not contain a joint / UL TCI state, or the TCI codepoint contains a joint / UL 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 a joint / UL 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 a joint / UL TCI state, or the TCI codepoint contains a joint / UL TCI state and the corresponding PL offset does not need to be updated.

[0289] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field can be used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value. For example, in the newly designed first MAC CE, the P / N indication field is defined to indicate whether the PL offset update value corresponding to the TCI state to be updated is a positive value or a negative value.

[0290] In some embodiments, taking updating of the PL offset parameter in the activated joint TCI state or UL TCI state as an example, the indication field corresponding to the PL offset update value in the first MAC CE may include at least one of the following C1 to C5:

[0291] C1, a 1-bit second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the PLoffset update value.

[0292] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Figure 4 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Figure 4In the MACCE, F1 to F8 are used to indicate whether the joint TCI state or UL TCIstate corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCI state corresponds to DL TRP. The following MACCE indication bytes respectively indicate the PL offset value of the joint / UL TCIstate for which the PL offset needs to be updated and the corresponding joint / UL TCI state. If a certain TCI state needs PL offset update, the corresponding update value is found through the TCI state, and a 1-bit P / N indication field is used to indicate whether the PL offset update value is positive or negative, such as 1 for positive value, 0 for negative value, and then 3 reserved bits R in the middle, and finally a 4-bit indication field is used to indicate the absolute value of the PL offset update value. Among them, the 1-bit D / U may not exist in the newly designed first MAC CE, or be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0293] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Figure 5 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Figure 5In the MAC-CE indication byte, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCI state corresponds to DL TRP. One method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state for which PL offset needs to be updated and the corresponding joint / UL TCI state, and the first N bytes are used for the indication of all joint / UL TCI states. The indication byte corresponding to the PL offset update value of each joint / UL TCI state is indicated by M bytes after the joint / UL TCI state byte, and each PL offset update value corresponds to the order of the joint / UL TCI state, that is, M equals N. Another indication method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state activated by MAC-CE and the joint / UL TCI state for which PL offset needs to be updated. If a certain TCI state requires a PL offset update through the Fi indication field, the PL offset update value of the joint / UL TCI state ID that actually corresponds to the Fi indication field can be determined in accordance with the update order corresponding to the Fi indication field. There may 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, such as 1 for a positive value, 0 for a negative value, and then 3 reserved bits R in the middle, and finally a 4-bit indication field is used to indicate the absolute value of the PL offset update value. Among them, the 1-bit D / U may not exist in the newly designed first MAC CE, or may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0294] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), the newly designed MAC CE, that is, the first MAC CE, is as follows Figure 6As shown, the Pi indication field is redefined to indicate whether the jointTCI state or UL TCI state corresponding to the ith TCI codepoint requires a PL offset update. The Pi indication field corresponds to the 8 TCI codepoints activated by the MACCE. If the ith TCI codepoint contains the joint / UL TCI state and the corresponding PL offset needs to be updated, the Pi indication field indicates 1; when the ith TCI codepoint does not contain the joint / UL TCI state or the ith TCI codepoint contains the joint / UL TCIstate and the corresponding PL offset does not need to be updated, the Pi indication field indicates 0; the following MACCE indication bytes respectively indicate the PL offset values ​​of the joint / UL TCIstate that need to update the PL offset. Figure 6 In the example, P1 to P8 are used to indicate whether the joint TCIstate or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding updated value, 0 for no update or indicating that the TCI state corresponds to DL TRP. If a certain TCI state needs PL offset update, find the indication field for indicating the updated value, and use a 1-bit P / N indication field to indicate whether the PL offset update value is positive or negative, such as 1 for positive value, 0 for negative value, and then 3 reserved bits R in the middle, and finally a 4-bit indication field for indicating the absolute value of the PL offset update value.

[0295] C2, 3 reserved bits and a 5-bit indication field, the 5-bit indication field is used to indicate the value of the PL offset update value.

[0296] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Figure 7 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th TCI codepoint needs PL offset update. Figure 7In the MACCE, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCI state corresponds to DLTRP. The following MACCE indication byte indicates the PLoffset value of the joint / UL TCI state where the PL offset needs to be updated and the corresponding joint / UL TCI state. If a certain TCI state requires PL offset update, the corresponding update value is found through the TCI state, first 3 reserved bits R, and then the 5-bit indication field is used to indicate the value of the PL offset update value. Among them, 1 bit D / U may not exist in the newly designed MAC CE, or it may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0297] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Figure 8 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Figure 8In the MAC-CE indication byte, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCI state corresponds to DL TRP. One method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state for which PL offset needs to be updated and the corresponding joint / UL TCI state, and the first N bytes are used for the indication of all joint / UL TCI states. The indication byte corresponding to the PL offset update value of each joint / UL TCI state is indicated by M bytes after the joint / UL TCI state byte, and each PL offset update value corresponds to the order of the joint / UL TCI state, that is, M equals N. Another indication method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state activated by MAC-CE and the joint / UL TCI state for which PL offset needs to be updated. If a certain TCI state requires a PL offset update through the Fi indication field, the PL offset update value of the joint / UL TCI state ID corresponding to the actual state can be determined according to the update order corresponding to the Fi indication field. There may be M PL offset update values, where M is less than or equal to N, and first 3 reserved bits R, and then 5 bits of the indication field are used to indicate the value of the PL offset update value. Among them, 1 bit D / U may not exist in the newly designed first MAC CE, or it may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0298] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), the newly designed MAC CE, that is, the first MAC CE, is as follows Fig. 9As shown, the Pi indication field is redefined to indicate whether the jointTCI state or UL TCI state corresponding to the ith TCI codepoint requires a PL offset update. The Pi indication field corresponds to the 8 TCI codepoints activated by the MACCE. If the ith TCI codepoint contains the joint / UL TCI state and the corresponding PL offset needs to be updated, the Pi indication field indicates 1; when the ith TCI codepoint does not contain the joint / UL TCI state or the ith TCI codepoint contains the joint / UL TCIstate and the corresponding PL offset does not need to be updated, the Pi indication field indicates 0; the following MACCE indication bytes respectively indicate the PL offset values ​​of the joint / UL TCIstate that need to update the PL offset. Fig. 9 In the example, P1 to P8 are used to indicate whether the joint TCIstate or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding updated value, 0 for no update or indicating that the TCI state corresponds to DL TRP. If a TCI state needs PL offset update, the indication field for indicating the updated value is found, first 3 reserved bits R, and then 5 bits of indication field for indicating the value of PL offset update value.

[0299] C3, a 1-bit second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the PL offset update value.

[0300] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Fig.10 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Fig.10In the MACCE, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCIstate corresponds to DL TRP. The following MACCE indication byte indicates the PL offset value of the joint / UL TCI state that needs to update the PL offset and the corresponding joint / UL TCI state. If a certain TCI state needs PL offset update, the corresponding update value is found through the TCI state, and the 1-bit P / N indication field is used to indicate whether the PL offset update value is positive or negative, such as 1 for positive value and 0 for negative value, and then the 7-bit indication field is used to indicate the value of the PL offset update value. In this way, a lower indication step size can also be supported. Among them, the 1-bit D / U may not exist in the newly designed MAC CE, or it may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0301] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Fig.11 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Fig.11In the MAC-CE indication byte, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCIstate corresponds to DL TRP. One method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state for which PL offset needs to be updated and the corresponding joint / UL TCI state, and the first N bytes are used for the indication of all joint / UL TCI states. The indication byte corresponding to the PL offset update value of each joint / UL TCI state is indicated by M bytes after the joint / UL TCI state byte, and each PL offset update value corresponds to the order of the joint / UL TCI state, that is, M equals N. Another indication method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state activated by MAC-CE and the joint / UL TCI state for which PL offset needs to be updated. If a certain TCI state requires a PL offset update through the Fi indication field, the PL offset update value of the joint / UL TCI state ID that actually corresponds to the Fi indication field can be determined in accordance with the update order corresponding to the Fi indication field. There may 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, such as 1 for a positive value and 0 for a negative value, and then a 7-bit indication field is used to indicate the value of the PL offset update value. Among them, the 1-bit D / U may not exist in the newly designed first MAC CE, or may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0302] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), the newly designed MAC CE, that is, the first MAC CE, is as follows Fig.12As shown, the Pi indication field is redefined to indicate whether the jointTCI state or UL TCI state corresponding to the ith TCI codepoint requires a PL offset update. The Pi indication field corresponds to the 8 TCI codepoints activated by the MACCE. If the ith TCI codepoint contains the joint / UL TCI state and the corresponding PL offset needs to be updated, the Pi indication field indicates 1; when the ith TCI codepoint does not contain the joint / UL TCI state or the ith TCI codepoint contains the joint / UL TCIstate and the corresponding PL offset does not need to be updated, the Pi indication field indicates 0; the following MACCE indication bytes respectively indicate the PL offset values ​​of the joint / UL TCIstate that need to update the PL offset. Fig.12 In the example, P1 to P8 are used to indicate whether the joint TCIstate or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding updated value, 0 for no update or indicating that the TCI state corresponds to DL TRP. If a certain TCI state needs PL offset update, find the indication field for indicating the updated value, and use a 1-bit P / N indication field to indicate whether the PL offset update value is positive or negative, such as 1 for positive value, 0 for negative value, and then a 7-bit indication field to indicate the value of the PL offset update value. This method can also support lower indication step sizes.

[0303] C4: 8-bit indication field, which is used to indicate the value of the PL offset update value.

[0304] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Fig.13 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th TCI codepoint needs PL offset update. Fig.13In the MACCE, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCI state corresponds to DL TRP. The following MACCE indication byte indicates the PL offset value of the joint / UL TCI state where the PL offset needs to be updated and the corresponding joint / UL TCI state. If a certain TCI state requires PL offset update, the corresponding update value is found through the TCI state, and the 8-bit indication field is used to indicate the value of the PL offset update value. This method can also support a lower indication step size. Among them, 1 bit D / U may not exist in the newly designed MAC CE, or it may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0305] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), a new MAC CE, namely the first MAC CE, is designed, such as Fig.14 As shown, based on the unified TCI stateMAC CE, the Fi indication field is defined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th 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 TCI state to be updated is positive or negative. Fig.14In the MAC-CE indication byte, F1 to F8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding update value, 0 for no update or indicating that the TCIstate corresponds to DL TRP. One method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state for which PL offset needs to be updated and the corresponding joint / UL TCI state, and the first N bytes are used for the indication of all joint / UL TCI states. The indication byte corresponding to the PL offset update value of each joint / UL TCI state is indicated by M bytes after the joint / UL TCI state byte, and each PL offset update value corresponds to the order of the joint / UL TCI state, that is, M equals N. Another indication method is that the following MAC-CE indication byte indicates the PL offset value of the joint / UL TCI state activated by MAC-CE and the joint / UL TCI state for which PL offset needs to be updated. If a certain TCI state requires a PL offset update through the Fi indication field, the PL offset update value of the joint / UL TCI state ID corresponding to the actual state can be determined according to the update order corresponding to the Fi indication field. There may 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 value of the PL offset update value. Among them, 1 bit D / U may not exist in the newly designed first MAC CE, or it may be replaced by 1 reserved bit R, etc. OCT2 is optional and may not exist. When the byte corresponding to OCT2 is defaulted, the UL BWP may be the same BWP as the DL BWP in OCT1.

[0306] In some examples, the unified TCI stateMAC CE (such as Figure 1 As shown), the newly designed MAC CE, that is, the first MAC CE, is as follows Fig.15As shown, the Pi indication field is redefined to indicate whether the jointTCI state or UL TCI state corresponding to the ith TCI codepoint requires a PL offset update. The Pi indication field corresponds to the 8 TCI codepoints activated by the MACCE. If the ith TCI codepoint contains the joint / UL TCI state and the corresponding PL offset needs to be updated, the Pi indication field indicates 1; when the ith TCI codepoint does not contain the joint / UL TCI state or the ith TCI codepoint contains the joint / UL TCIstate and the corresponding PL offset does not need to be updated, the Pi indication field indicates 0; the following MACCE indication bytes respectively indicate the PL offset values ​​of the joint / UL TCIstate that need to update the PL offset. Fig.15 In the example, P1 to P8 are used to indicate whether the joint TCIstate or UL TCI state corresponding to each TCI codepoint needs PL offset update, such as 1 for corresponding updated value, 0 for no update or indicating that the TCI state corresponds to DL TRP. If a certain TCI state needs PL offset update, an indication field for indicating the updated value is found, and the 8-bit indication field is used to indicate the value of the PL offset update value. This method can also support lower indication step sizes.

[0307] C5, a 4-bit indication field, which is used to indicate the absolute value of the PL offset update value.

[0308] In some examples, such as Fig.16 As shown, the Pi indication field is redefined to indicate whether the joint TCI state or UL TCI state corresponding to the i-th TCI codepoint needs PL offset update. The P / Ni indication field is defined to indicate whether the PL offset update value corresponding to the i-th TCI state to be updated is a positive value or a negative value. Fig.16In the example, P1 to P8 are used to indicate whether the joint TCI state or UL TCI state corresponding to each TCI codepoint needs a PL offset update, such as 1 for a corresponding update value, 0 for no update or indicating that the TCI state corresponds to a DL TRP. P / N1 to P / N8 are used to indicate whether the PL offset update value corresponding to each TCI state that needs to be updated is a positive value or a negative value, such as 1 for a positive value and 0 for a negative value. If a certain TCI state requires a PL offset update, the corresponding P / N indication field is found to indicate whether the PL offset update value is a positive value or a negative value, and the corresponding 4-bit indication field is found to indicate the absolute value of the PL offset update value. In this way, one byte can contain two absolute values ​​of the PL offset update value, thereby saving indication space.

[0309] In some embodiments, for the PLoffset update in the joint TCI state or UL TCI state configured by RRC, a newly designed first MAC CE can also be used to indicate the update. For example, since there are more joint TCIstates or UL TCI states, for the joint TCI state, a maximum of 128 TCI codepoints can be configured, and for the ULTCI state, a maximum of 64 codepoints can be configured. Therefore, an indication field with more bytes can be used to indicate the PLoffset update.

[0310] In some examples, for the case where the joint TCI state mode is configured, a maximum of 128 TCI codepoints corresponding to the joint TCI state are supported, and a 16-byte first indication field can be used to indicate whether the PL offset corresponding to each joint TCI state needs to be updated, and a maximum of 128 bytes can be used to indicate the updated value of each PL offset, wherein the specific implementation method of indicating the updated value of the PL offset can refer to at least one of C1 to C5 above, and will not be repeated here.

[0311] In some examples, for the case where an independent TCI state mode is configured, a maximum of 64 UL TCI states corresponding to TCI codepoints are supported, and an 8-byte first indication field can be used to indicate whether the PL offset corresponding to each UL TCI state needs to be updated, and a maximum of 64 bytes can be used to indicate the updated value of each PL offset, wherein the specific implementation method of indicating the updated value of the PL offset can refer to at least one of C1 to C5 above, and will not be repeated here.

[0312] In some embodiments, for the PLoffset update in the currently applied joint TCI state or UL TCI state, a newly designed first MAC CE may also be used to indicate the update, such as using an indication field with fewer bytes to indicate the PL offset update.

[0313] In some examples, 1 byte may be used to indicate whether the PL offset in the currently applied joint TCI state or UL TCI state needs to be updated, wherein the specific implementation method of indicating the updated value of the PL offset may refer to at least one of C1 to C5 above and will not be repeated here.

[0314] The communication method involved in this embodiment may include at least one of step S201 to step S202. For example, step S201 may be implemented as an independent embodiment, and step S202 may be implemented as an independent embodiment. In addition, some or all of the steps in step S201 to step S202 may be combined and implemented as an independent embodiment, which is not limited in this embodiment.

[0315] By applying the solution of the embodiment of the present disclosure, for a terminal that supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, the first information sent by the network device can be received, and the first configuration can be updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. In addition, the PL offset corresponding to the UL-only TRP can be updated.

[0316] To illustrate the specific execution process of the terminal, Fig.17 A flow chart of a communication method according to an embodiment of the present disclosure is shown. When applied to a terminal side, the method may include the following steps.

[0317] Step S301: A terminal receives first information sent by a network device.

[0318] In some embodiments, the terminal supports unified TCI state configuration.

[0319] In some embodiments, the terminal is configured by the network device to uniformly transmit configuration indication mode.

[0320] In some embodiments, the first information includes relevant information indicating a unified TCI state that supports S-TRP transmission.

[0321] Step S302: The terminal updates the first configuration according to the first information.

[0322] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0323] In some embodiments, at least one of the following includes the first configuration:

[0324] a first joint TCI state, wherein the first joint TCI state is configured through RRC signaling;

[0325] A first UL TCI state, wherein the first UL TCI state is configured through RRC signaling;

[0326] a second joint TCI state, wherein the second joint TCI state is activated by indicating the MAC CE;

[0327] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0328] a third joint TCI state, where the third joint TCI state is indicated by DCI or by DCI and RRC signaling;

[0329] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0330] In some embodiments, the first information may include a first MAC CE.

[0331] In some embodiments, the indication field in the first MAC CE may be used to indicate an updated value of the PL offset.

[0332] 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 indication step size of the PL offset.

[0333] In some embodiments, the indicated step size of the PL offset includes one of the following:

[0334] 1dB; 2dB; 4dB.

[0335] In some embodiments, taking the indication step size of the PL offset as 4 dB as an example, the at least 5-bit indication field in the first MAC CE is used to indicate the value of the updated value of the PL offset.

[0336] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, the 1-bit indication field in the first MAC CE is used to indicate the positive and negative values ​​of the updated value of PL offset, and the LSB 4-bit indication field is used to indicate the absolute value of the updated value of PL offset.

[0337] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, at least a 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 the MSB indication field is used to indicate the positive and negative values ​​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.

[0338] 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 TCI state corresponding to the TCI codepoint performs PL offset update.

[0339] In some embodiments, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0340] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0341] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0342] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0343] In some embodiments, the first indication field is a first value used to determine that the TCI codepoint includes a jointTCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0344] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0345] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0346] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0347] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0348] In some examples, the indication field corresponding to the updated value of the PL offset in the first MAC CE includes at least one of the following:

[0349] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0350] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0351] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0352] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0353] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0354] The specific examples in this embodiment can be found in Figures 1 to 16 The corresponding description of the embodiments in the above will not be repeated here.

[0355] The communication method involved in this embodiment may include at least one of step S301 to step S302. For example, step S301 may be implemented as an independent embodiment, and step S302 may be implemented as an independent embodiment. In addition, some or all of the steps S301 to S302 may be combined and implemented as an independent embodiment, which is not limited in this embodiment.

[0356] By applying the solution of the embodiment of the present disclosure, for a terminal that supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, the first information sent by the network device can be received, and the first configuration can be updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. In addition, the PL offset corresponding to the UL-only TRP can be updated.

[0357] Fig.18 FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Fig.18 As shown, the method is applied to be executed on the network device side and may include the following steps.

[0358] Step S401: The network device sends first information to the terminal.

[0359] In some embodiments, the terminal supports unified TCI state configuration.

[0360] In some embodiments, the terminal is configured by the network device to uniformly transmit configuration indication mode.

[0361] In some embodiments, the first information includes relevant information indicating a unified TCI state that supports S-TRP transmission.

[0362] In some embodiments, the first information is used to update a first configuration, and the first configuration is used to determine a PL offset corresponding to the UL-only TRP.

[0363] In some embodiments, at least one of the following includes the first configuration:

[0364] a first joint TCI state, wherein the first joint TCI state is configured through RRC signaling;

[0365] A first UL TCI state, wherein the first UL TCI state is configured through RRC signaling;

[0366] a second joint TCI state, wherein the second joint TCI state is activated by indicating a MAC control element CE;

[0367] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0368] a third joint TCI state, where the third joint TCI state is indicated by DCI or by DCI and RRC signaling;

[0369] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0370] In some embodiments, the first information includes a first MAC CE.

[0371] In some embodiments, the indication field in the first MAC CE may be used to indicate an updated value of the PL offset.

[0372] In some embodiments, the number of bits used in the indication field in the first MAC CE is determined according to the indication range and indication step size of the PL offset.

[0373] In some embodiments, the indicated step size of the PL offset includes one of the following:

[0374] 1dB; 2dB; 4dB.

[0375] In some embodiments, taking the indication step size of the PL offset as 4 dB as an example, the at least 5-bit indication field in the first MAC CE is used to indicate the value of the updated value of the PL offset.

[0376] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, the 1-bit indication field in the first MAC CE is used to indicate the positive and negative values ​​of the updated value of PL offset, and the LSB 4-bit indication field is used to indicate the absolute value of the updated value of PL offset.

[0377] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, at least a 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 the MSB indication field is used to indicate the positive and negative values ​​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.

[0378] 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 TCI state corresponding to the TCI codepoint performs PL offset update.

[0379] In some embodiments, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0380] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0381] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0382] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0383] In some embodiments, the first indication field is a first value used to determine that the TCI codepoint includes a jointTCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0384] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0385] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0386] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0387] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0388] In some examples, the indication field corresponding to the updated value of the PL offset in the first MAC CE includes at least one of the following:

[0389] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0390] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0391] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0392] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0393] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0394] The specific examples in this embodiment can be found in Figures 1 to 17 The corresponding description of the embodiments in the above will not be repeated here.

[0395] By applying the solution of the embodiment of the present disclosure, for a terminal that supports unified TCI state configuration and is configured by a network device as a unified transmission configuration indication mode, the first information sent by the network device can be received, and the first configuration can be updated according to the first information; wherein the first configuration is used to determine the PL offset corresponding to the UL-only TRP. In addition, the PL offset corresponding to the UL-only TRP can be updated.

[0396] Based on the description of the above embodiments, the following specific examples are given, but are not limited thereto:

[0397] For terminals that only support R17 unified TCI state, they can only support DL S-TRP / UL S-TRP transmission, that is, update the PL offset corresponding to the joint / UL TCI state through MAC-CE;

[0398] The MAC-CE updates the PL offset to:

[0399] Alt.1: joint / UL TCI state configured by RRC;

[0400] Alt.2: activated joint / UL TCI state activated by MAC-CE;

[0401] Alt.3: The currently applied joint / UL TCI state.

[0402] The PL offset indication range is [-A, B], the indication step size (granularity) is 4dB, and the indication mode has the following three modes:

[0403] Alt.1: at least 5 bits of indication field used to indicate the actual value of PL offset;

[0404] Alt.2: 1-bit indication field is used to indicate the positive / negative value of PL offset, and LSB 4-bit indication field is used to indicate the absolute value of PL offset;

[0405] Alt.3: At least 5 bits of indication field are used to indicate the actual value of PL offset, the MSB is used to indicate the positive / negative value of PL offset, and the LSB is used to indicate the absolute value of PL offset;

[0406] Consider more bits to support smaller step size indication design, such as 1dB, 2dB;

[0407] For MAC-CE design:

[0408] Method 1: Extend the R17 UTCI state MAC-CE to a new MAC-CE;

[0409] Method 2: Design a new MAC-CE;

[0410] MAC-CE design corresponding method 1:

[0411] The Fi indication field is defined to indicate whether the TCI state corresponding to the i-th TCI codepoint needs PLoffset update. 1 means it needs to be updated, 0 means it does not need to be updated;

[0412] The PL_offset indicator field can be indicated in the following ways:

[0413] Define 1 bit P / N + 3 bits R + 4 bits absolute value;

[0414] 3 bits R + 5 bits actual value;

[0415] 1 bit P / N + 7 bits actual value;

[0416] 8-bit actual value; (can support lower indication step size);

[0417] The maximum value of N is 8;

[0418] MAC-CE design corresponding method 2

[0419] Design 1:

[0420] The P indication field is redefined to indicate whether the TCI state corresponding to the i-th TCI codepoint needs PLoffset update. 1 corresponds to an updated value, and 0 does not need to be updated or corresponds to DL TRP.

[0421] The P / N indication field is defined to indicate whether the PL offset value corresponding to the TCI state (N<=8) that needs to be updated is a positive value or a negative value;

[0422] The PL_offset indicator field can be indicated in the following ways:

[0423] 4-bit absolute value;

[0424] Design 2:

[0425] Take updating the PL offset corresponding to the activated TCI states as an example.

[0426] The P indication field is redefined to indicate whether the TCI state corresponding to the i-th TCI codepoint needs PLoffset update. 1 corresponds to an updated value, and 0 does not need to be updated or corresponds to DL TRP.

[0427] PL_offset indicator field:

[0428] 1 bit P / N + 3 bits R + 4 bits absolute value;

[0429] 3 bits R + 5 bits actual value;

[0430] 1 bit P / N + 7 bits actual value;

[0431] 8-bit actual value; (can support lower indication step size)

[0432] For the UL-only scenario, the embodiments of the present disclosure define a MAC-CE update method for a terminal supporting the R17 unified TCI version and configuring a PL offset value corresponding to different unified TCI modes.

[0433] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0434] It should be understood that the division of the units or modules in the above device is only a division of logical functions, and in actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above hardware circuits 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 some or all of the above units or modules are realized by designing the logical relationship of the components in the circuit; for example, in another implementation, the above hardware circuit can be realized by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which 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 some or all of the above units or modules. All units or modules of the above devices can be realized in the form of a processor calling software, or in the form of a hardware circuit, or in part by a processor calling software, and the rest by a hardware circuit.

[0435] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic IoT terminal device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0436] Fig.19 Schematic diagram of the structure of the terminal proposed in the embodiment of the present disclosure. Fig.19 As shown, the terminal may include: a transceiver module 61 and a processing module 62. In some embodiments, the transceiver module 61 and the processing module 62 are used to execute at least one of the communication steps (such as steps S301 to S302, but not limited thereto) executed by the terminal in any of the above methods, which will not be repeated here.

[0437] In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0438] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0439] In some embodiments, at least one of the following includes the first configuration:

[0440] a first joint TCI state, wherein the first joint TCI state is configured through RRC signaling;

[0441] A first UL TCI state, wherein the first UL TCI state is configured through RRC signaling;

[0442] a second joint TCI state, wherein the second joint TCI state is activated by indicating the MAC CE;

[0443] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0444] a third joint TCI state, where the third joint TCI state is indicated by DCI or by DCI and RRC signaling;

[0445] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0446] In some embodiments, the first information may include a first MAC CE.

[0447] In some embodiments, the indication field in the first MAC CE may be used to indicate an updated value of the PL offset.

[0448] 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 indication step size of the PL offset.

[0449] In some embodiments, the indicated step size of the PL offset includes one of the following:

[0450] 1dB; 2dB; 4dB.

[0451] In some embodiments, taking the indication step size of the PL offset as 4 dB as an example, the at least 5-bit indication field in the first MAC CE is used to indicate the value of the updated value of the PL offset.

[0452] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, the 1-bit indication field in the first MAC CE is used to indicate the positive and negative values ​​of the updated value of PL offset, and the LSB 4-bit indication field is used to indicate the absolute value of the updated value of PL offset.

[0453] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, at least a 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 the MSB indication field is used to indicate the positive and negative values ​​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.

[0454] 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 TCI state corresponding to the TCI codepoint performs PL offset update.

[0455] In some embodiments, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0456] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0457] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0458] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0459] In some embodiments, the first indication field is a first value used to determine that the TCI codepoint includes a jointTCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0460] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0461] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0462] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0463] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0464] In some examples, the indication field corresponding to the updated value of the PL offset in the first MAC CE includes at least one of the following:

[0465] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0466] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0467] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0468] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0469] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0470] Fig. 20 Schematic diagram of the structure of the network device proposed in the embodiment of the present disclosure. Fig. 20 As shown, the network device may include: a transceiver module 71. In some embodiments, the transceiver module 71 is used to execute at least one of the communication steps (such as step S401, but not limited thereto) executed by the network device in any of the above methods, which will not be described in detail here.

[0471] In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0472] In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0473] In some embodiments, the first configuration is used to determine the PL offset corresponding to the UL-only TRP.

[0474] In some embodiments, at least one of the following includes the first configuration:

[0475] a first joint TCI state, wherein the first joint TCI state is configured through RRC signaling;

[0476] A first UL TCI state, wherein the first UL TCI state is configured through RRC signaling;

[0477] a second joint TCI state, wherein the second joint TCI state is activated by indicating the MAC CE;

[0478] a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE;

[0479] a third joint TCI state, where the third joint TCI state is indicated by DCI or by DCI and RRC signaling;

[0480] The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

[0481] In some embodiments, the first information may include a first MAC CE.

[0482] In some embodiments, the indication field in the first MAC CE may be used to indicate an updated value of the PL offset.

[0483] 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 indication step size of the PL offset.

[0484] In some embodiments, the indicated step size of the PL offset includes one of the following:

[0485] 1dB; 2dB; 4dB.

[0486] In some embodiments, taking the indication step size of the PL offset as 4 dB as an example, the at least 5-bit indication field in the first MAC CE is used to indicate the value of the updated value of the PL offset.

[0487] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, the 1-bit indication field in the first MAC CE is used to indicate the positive and negative values ​​of the updated value of PL offset, and the LSB 4-bit indication field is used to indicate the absolute value of the updated value of PL offset.

[0488] In some embodiments, taking the indication step size of PL offset as 4 dB as an example, at least a 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 the MSB indication field is used to indicate the positive and negative values ​​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.

[0489] 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 TCI state corresponding to the TCI codepoint performs PL offset update.

[0490] In some embodiments, the signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following:

[0491] A first number, wherein the first number is used to represent the number of TCI state codepoints;

[0492] A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint;

[0493] The third number is used to indicate the number of UL TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

[0494] In some embodiments, the first indication field is a first value used to determine that the TCI codepoint includes a jointTCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated;

[0495] The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a ULTCI state; or,

[0496] The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state does not need to be updated;

[0497] The first value and the second value are one of 0 and 1, and the first value is different from the second value.

[0498] In some embodiments, the first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

[0499] In some examples, the indication field corresponding to the updated value of the PL offset in the first MAC CE includes at least one of the following:

[0500] 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value;

[0501] 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value;

[0502] 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value;

[0503] An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value;

[0504] A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

[0505] Fig.21 8100 is a schematic diagram of the structure of the communication device 8100 proposed in the embodiment of the present disclosure. The communication device 8100 can be a network device (such as an access network device, a core network device, etc.), or a terminal (such as a user device, etc.), or a terminal, or a chip, a chip system, or a processor that supports the network device to implement any of the above methods, or a chip, a chip system, or a processor that supports the terminal to implement any of the above methods. The communication device 8100 can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

[0506] like Fig.21 As shown, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and the communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute the program, and process the data of the program. Optionally, the communication device 8100 is used to execute any of the above methods. Optionally, one or more processors 8101 are used to call instructions so that the communication device 8100 executes any of the above methods.

[0507] 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 sending and / or receiving in the above method, and the processor 8101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and the transmitter may be separated or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

[0508] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memories 8103 may also be outside the communication device 8100. In an optional embodiment, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive data from the memory 8102 or other devices, and may be used to send data to the memory 8102 or other devices. For example, the interface circuit 8104 may read the data stored in the memory 8102 and send the data to the processor 8101.

[0509] The communication device 8100 described in the above embodiments may 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 may not be limited thereto. Fig.21 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0510] Fig. 22 8200 is a schematic diagram of the structure of the chip 8200 proposed in the embodiment of the present disclosure. For the case where the communication device 8100 can be a chip or a chip system, please refer to Fig. 22 The structure diagram of the chip 8200 is shown, but is not limited to this.

[0511] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0512] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. 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 used to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read the data stored in the memory 8203 and send the data to the processor 8201.

[0513] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method. The interface circuit 8202 performs the communication steps such as sending and / or receiving in the above method, for example, means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203 or the transceiver device. In some embodiments, the processor 8201 performs at least one of the steps of the above communication method.

[0514] The modules and / or devices described in the embodiments such as virtual devices, physical devices, chips, etc. can be combined or separated as needed. Optionally, some or all steps can also be performed by multiple modules and / or devices in collaboration, which is not limited here.

[0515] The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, 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. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

[0516] The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

[0517] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims

1. A communication method, characterized in that: Executed by a terminal, the method includes: receiving first information sent by a network device, wherein the first information includes information indicating a unified transmission configuration indication state unified TCI state supporting single transmission reception point S-TRP transmission; updating a first configuration according to the first information; Among them, the first configuration is used to determine the path loss offset PLoffset corresponding to the uplink UL-only transmission receiving point TRP.

2. The method according to claim 1, characterized in that At least one of the following includes the first configuration: A first joint transmission configuration indication state joint TCI state, wherein the first joint TCI state is configured through radio resource control RRC signaling; A first uplink transmission configuration indication state UL TCI state, wherein the first UL TCI state is configured through RRC signaling; a second joint TCI state, wherein the second joint TCI state is activated by indicating a media access control MAC control element CE; a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE; a third joint TCI state, where the third joint TCI state is indicated by downlink control information DCI or by both DCI and RRC signaling; The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

3. The method according to any one of claims 1 to 2, characterized in that The first information includes a first MAC CE.

4. The method according to claim 3, characterized in that The indication field in the first MAC CE is used to indicate the updated value of the PL offset.

5. The method according to claim 4, characterized in that The number of bits used in the indication field is determined according to the indication range and indication step of the PLoffset.

6. The method according to claim 5, characterized in that The indicated step size includes one of the following: 1dB; 2dB; 4dB.

7. The method according to any one of claims 3 to 6, characterized in that The at least 5-bit indication field in the first MAC CE is used to indicate the value of the update value; or, The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit LSB 4-bit indication field is used to indicate the absolute value of the update value; or, The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit MSB indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the 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, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint codepoint performs PL offset update.

9. The method according to claim 8, characterized in that The signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following: A first number, wherein the first number is used to represent the number of TCI state codepoints; A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint; The third number is used to indicate the number of ULTCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

10. The method according to any one of claims 8 to 9, characterized in that The first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated; The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a UL TCI state; or, The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL 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 whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

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

13. A communication method, characterized in that: Executed by a network device, the method includes: Sending first information to the terminal, where the first information includes information indicating a unified transmission configuration indication state unified TCI state supporting single transmission reception point S-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 UL-only transmission reception point TRP.

14. The method according to claim 13, characterized in that At least one of the following includes the first configuration: A first joint transmission configuration indication state joint TCI state, wherein the first joint TCI state is configured through radio resource control RRC signaling; A first uplink transmission configuration indication state UL TCI state, wherein the first UL TCI state is configured through RRC signaling; a second joint TCI state, wherein the second joint TCI state is activated by indicating a media access control MAC control element CE; a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE; a third joint TCI state, where the third joint TCI state is indicated by downlink control information DCI or by both DCI and RRC signaling; The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

15. The method according to any one of claims 13 to 14, characterized in that The first information includes a first MAC CE.

16. The method according to claim 15, characterized in that The indication field in the first MAC CE is used to indicate the updated value of the PL offset.

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

18. The method according to claim 17, characterized in that The indicated step size includes one of the following: 1dB; 2dB; 4dB.

19. The method according to any one of claims 15 to 18, characterized in that The at least 5-bit indication field in the first MAC CE is used to indicate the value of the update value; or, The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit LSB 4-bit indication field is used to indicate the absolute value of the update value; or, The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit MSB indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

20. The method according to any one of claims 15 to 19, characterized in that The first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint codepoint performs PL offset update.

21. The method according to claim 20, characterized in that The signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following: A first number, wherein the first number is used to represent the number of TCI state codepoints; A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint; The third number is used to indicate the number of ULTCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

22. The method according to any one of claims 20 to 21, characterized in that The first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated; The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a UL TCI state; or, The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL 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.

23. The method according to any one of claims 20 to 22, characterized in that The first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

24. The method according to claim 23, characterized in that The indication field corresponding to the update value in the first MAC CE includes at least one of the following: 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value; 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value; 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value; An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value; A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

25. A communication method, characterized in that: include: The network device sends first information to the terminal, where the first information includes information indicating a unified TCI state supporting single transmission reception point S-TRP transmission; The terminal receives the first information, and updates a first configuration according to the first information; Among them, the first configuration is used to determine the path loss offset PLoffset corresponding to the uplink UL-only transmission receiving point TRP.

26. A terminal, characterized in that: include: A transceiver module, configured to receive first information sent by a network device, wherein the first information includes information indicating a unified TCI state supporting single transmission reception point S-TRP transmission; a processing module, configured to update a first configuration according to the first information; Among them, the first configuration is used to determine the path loss offset PLoffset corresponding to the uplink UL-only transmission receiving point TRP.

27. The terminal according to claim 26, characterized in that At least one of the following includes the first configuration: A first joint transmission configuration indication state joint TCI state, wherein the first joint TCI state is configured through radio resource control RRC signaling; A first uplink transmission configuration indication state UL TCI state, wherein the first UL TCI state is configured through RRC signaling; a second joint TCI state, wherein the second joint TCI state is activated by indicating a media access control MAC control element CE; a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE; a third joint TCI state, where the third joint TCI state is indicated by downlink control information DCI or by both DCI and RRC signaling; The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

28. The terminal according to any one of claims 26 to 27, characterized in that: The first information includes a first MAC CE.

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

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

31. The terminal according to claim 30, characterized in that The indicated step size includes one of the following: 1dB; 2dB; 4dB.

32. The terminal according to any one of claims 28 to 31, characterized in that: The at least 5-bit indication field in the first MAC CE is used to indicate the value of the update value; or, The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit LSB 4-bit indication field is used to indicate the absolute value of the update value; or, The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit MSB indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

33. The terminal according to any one of claims 28 to 32, characterized in that: The first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint codepoint performs PL offset update.

34. The terminal according to claim 33, characterized in that The signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following: A first number, wherein the first number is used to represent the number of TCI state codepoints; A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint; The third number is used to indicate the number of ULTCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

35. The terminal according to any one of claims 33 to 34, characterized in that: The first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated; The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a UL TCI state; or, The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL 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 according to any one of claims 34 to 35, characterized in that: The first MAC CE has at least one second indication field, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

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

38. A network device, characterized in that: include: A transceiver module, configured to send first information to a terminal, wherein the first information includes information indicating a unified TCI state supporting single transmission reception point S-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 UL-only transmission reception point TRP.

39. The network device according to claim 38, characterized in that: At least one of the following includes the first configuration: A first joint transmission configuration indication state joint TCI state, wherein the first joint TCI state is configured through radio resource control RRC signaling; A first uplink transmission configuration indication state UL TCI state, wherein the first UL TCI state is configured through RRC signaling; a second joint TCI state, wherein the second joint TCI state is activated by indicating a media access control MAC control element CE; a second UL TCI state, wherein the second UL TCI state is activated by indicating a MAC CE; a third joint TCI state, where the third joint TCI state is indicated by downlink control information DCI or by both DCI and RRC signaling; The third UL TCI state is indicated by DCI or by both DCI and RRC signaling.

40. The network device according to any one of claims 38 to 39, characterized in that: The first information includes a first MAC CE.

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

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

43. The network device according to claim 42, characterized in that: The indicated step size includes one of the following: 1dB; 2dB; 4dB.

44. The network device according to any one of claims 40 to 43, characterized in that: The at least 5-bit indication field in the first MAC CE is used to indicate the value of the update value; or, The 1-bit indication field in the first MAC CE is used to indicate the positive or negative value of the update value, and the least significant bit LSB 4-bit indication field is used to indicate the absolute value of the update value; or, The at least 5-bit indication field in the first MAC CE is used to indicate the numerical value of the updated value, the most significant bit MSB indication field is used to indicate the positive or negative value of the updated value, and the LSB indication field is used to indicate the absolute value of the updated value.

45. The network device according to any one of claims 40 to 44, characterized in that: The first MAC CE has at least one first indication field, and the first indication field is used to indicate whether the TCI state corresponding to the TCI codepoint codepoint performs PL offset update.

46. ​​The network device according to claim 45, characterized in that The signaling length of the first MACCE is determined by the first indication field, and the first indication field is determined by one of the following: A first number, wherein the first number is used to represent the number of TCI state codepoints; A second number, the second number is used to indicate the number of joint TCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint; The third number is used to indicate the number of ULTCI states for which PLoffset needs to be updated corresponding to the TCI state codepoint.

47. The network device according to any one of claims 45 to 46, characterized in that: The first indication field is a first value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL TCI state needs to be updated; The first indication field is a second value used to determine that the TCI codepoint does not include a joint TCI state and a UL TCI state; or, The first indication field is a second value used to determine that the TCI codepoint includes a joint TCI state or a UL TCI state, and the PL offset corresponding to the included joint TCI state or UL 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, and the second indication field is used to indicate whether the PL offset update value corresponding to the TCI state is a positive value or a negative value.

49. The network device according to claim 48, characterized in that The indication field corresponding to the update value in the first MAC CE includes at least one of the following: 1 bit of the second indication field, 3 reserved bits and a 4-bit indication field, where the 4-bit indication field is used to indicate the absolute value of the update value; 3 reserved bits and a 5-bit indication field, wherein the 5-bit indication field is used to indicate the value of the update value; 1 bit of the second indication field and a 7-bit indication field, where the 7-bit indication field is used to indicate a value of the update value; An 8-bit indication field, the 8-bit indication field is used to indicate a value of the update value; A 4-bit indication field, wherein the 4-bit indication field is used to indicate the absolute value of the update value.

50. A communication device, characterized in that: include: one or more processors; The processor is used to execute the method according to any one of claims 1 to 24.

51. A communication system, characterized in that: The invention comprises a terminal and a network device, wherein the terminal is configured to implement the method according to any one of claims 1 to 12, and the network device is configured to implement the method according to any one of claims 13 to 24.

52. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method described in any one of claims 1 to 24 can be implemented.

53. A computer program product, comprising a computer program, wherein after the computer program is executed by a processor, the method according to any one of claims 1 to 24 can be implemented.

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