Method for determining uplink power in subband non-overlapping full-duplex operation, and communication method and communication device

Abstract

The present application provides a method for determining uplink power for a random access procedure or a connected state in a subband non-overlapping full-duplex (SBFD) operation, and a communication method in an SBFD operation, a communication device and a computer-readable storage medium. The method for determining uplink power for a random access procedure in an SBFD operation may be executed by a user equipment, and comprises: acquiring a first power control parameter corresponding to an SBFD time unit; and on the basis of the first power control parameter, determining an uplink physical shared channel (PUSCH) transmission power corresponding to the SBFD time unit.

Description

Uplink power determination method, communication method and communication device applying sub-band non-overlapping full duplex operation TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of wireless communication, and in particular to an uplink power determination method for a random access procedure or a connected state applying sub-band non-overlapping full duplex (SBFD) operation, a communication method applying SBFD operation, a communication device and a computer readable storage medium. BACKGROUND

[0002] The exponential growth of diverse use cases and the number of user equipment (UE) in the next generation wireless communication system leads to a surge in data traffic, which leads to higher requirements for spectrum efficiency. In order to meet the requirements of high spectrum efficiency, time division duplexing (TDD) systems are widely used in commercial new radio (NR) deployments. TDD systems use a single spectrum (frequency bandwidth) for downlink (DL) and uplink (UL) in different time slots, which can more effectively utilize the available spectrum compared to frequency division duplexing (FDD) systems. In traditional TDD systems, the time domain resources are divided into downlink (DL), uplink (UL) and flexible slots / symbols, where the flexible slots / symbols can be used as DL, UL or DL-UL switching guard period. The limited time length allocated for uplink in traditional TDD will result in reduced coverage, increased latency and reduced capacity.

[0003] In order to overcome the limitations of traditional TDD operation, 3GPP RAN Working Group approved a study item in Rel-18 to study the feasibility of the simultaneous presence of DL and UL, i.e. the so-called full duplex operation, or more specifically, sub-band non-overlapping full duplex (SBFD) operation within the traditional TDD band. In SBFD operation, the base station (e.g. gNB) operates in full duplex mode, i.e. simultaneous transmission of DL and UL only on the base station side, while the user equipment (UE) operates in half duplex mode.

[0004] In the SBFD operation, the time of the network is divided into SBFD time units and non-SBFD time units (or referred to as original time units), and such division helps to more effectively manage resources and optimize network performance. Within the SBFD time units, devices or base stations are allowed to operate in a full-duplex mode, that is, to simultaneously transmit and receive uplink and downlink data at the same time. This means that devices can send data while also receiving data from other nodes in these time units, achieving higher data transmission rates and lower communication delays. In contrast to the SBFD time units, the non-SBFD time units do not allow devices to simultaneously transmit and receive data. In such time units, devices either only transmit data or only receive data.

[0005] SUMMARY

[0006] Embodiments of the present application provide a method for determining uplink power in a random access procedure or in a connected state using sub-band non-overlapping full duplex (SBFD) operation, a communication method using SBFD operation, a communication device, and a computer readable storage medium, to solve the problems in the prior art.

[0007] In an aspect, the present application provides a method for determining uplink power in a random access procedure using sub-band non-overlapping full duplex (SBFD) operation, which is executed in a user equipment (UE). The method comprises: obtaining a first power control parameter corresponding to an SBFD time unit; and determining a transmission power of an uplink physical shared channel (PUSCH) corresponding to the SBFD time unit according to the first power control parameter.

[0008] In an aspect, the present application provides a method for determining uplink power in a random access procedure using sub-band non-overlapping full duplex (SBFD) operation, which is executed in a base station. The method comprises: indicating a first power control parameter corresponding to an SBFD time unit to a user equipment (UE); wherein the first power control parameter is used to determine a transmission power of an uplink physical shared channel (PUSCH) corresponding to the SBFD time unit.

[0009] In an aspect, the present application provides a communication method using sub-band non-overlapping full duplex (SBFD) operation, which is executed in a user equipment. The method comprises: determining a first transmission configuration indicator (TCI) state associated with an SBFD time unit; and determining a second TCI state associated with a non-SBFD time unit.

[0010] In an aspect, the present application provides a communication method using sub-band non-overlapping full duplex (SBFD) operation, which is executed in a base station. The method comprises: sending configuration information, activation information or indication information of a TCI state to a user equipment (UE); wherein the configuration information, activation information or indication information is used to indicate an association relationship between the SBFD time unit and the non-SBFD time unit and the TCI state.

[0011] In one aspect, this application provides a method for determining uplink power in a connected state using subband non-overlapping full-duplex (SBFD) operation, executed in a user equipment. The method includes: acquiring the association between multiple Transmission Configuration Indicator (TCI) states and uplink power control parameters; determining the uplink transmission TCI state; and determining the uplink transmission power associated with SBFD time units and non-SBFD time units based on the association between the multiple TCI states and the uplink power control parameters and the uplink transmission TCI state.

[0012] In one aspect, this application provides a method for determining uplink power in a connected state using subband non-overlapping full-duplex (SBFD) operation, executed at a base station. The method includes: configuring a plurality of Transmission Configuration Indicator (TCI) states and uplink power control parameters for a User Equipment (UE); the correlation is used to determine the power of uplink transmissions associated with SBFD time units and non-SBFD time units.

[0013] In one aspect, this application provides a communication method using subband non-overlapping full-duplex (SBFD) operation, executed in a user equipment. The method includes: acquiring the configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set, wherein the first SRS resource set corresponds to an SBFD time unit and the second SRS resource set corresponds to a non-SBFD time unit; transmitting SRS to a base station on SRS resources in the first or second SRS resource set; receiving indication information for SRS measurements; and transmitting a Physical Uplink Shared Channel (PUSCH) based on the indication information.

[0014] In one aspect, this application provides a communication method using subband non-overlapping full-duplex (SBFD) operation, executed at a base station. The method includes: configuring a first Sounding Reference Signal (SRS) resource set and a second SRS resource set for a User Equipment (UE), wherein the first SRS resource set corresponds to an SBFD time unit, and the second SRS resource set corresponds to a non-SBFD time unit; receiving SRS on SRS resources in either the first or second SRS resource set; sending indication information for SRS measurements; and receiving the Physical Uplink Shared Channel (PUSCH) according to the indication information.

[0015] In one aspect, this application provides a communication device, including a processor and a memory. The memory stores program instructions, which, when executed by the processor, are used to implement any of the aforementioned methods.

[0016] In one aspect, this application provides a computer-readable storage medium for storing program instructions. When executed by a processor, these program instructions are used to implement any of the aforementioned communication methods. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0018] FIG. 1 shows several modes of frequency sub-band configuration in a TDD system applying SBFD.

[0019] FIG. 2 shows an uplink power determination method of a random access procedure applying sub-band non-overlapping full duplex (SBFD) operation according to an embodiment of the present application.

[0020] FIG. 3 shows a communication method applying sub-band non-overlapping full duplex (SBFD) operation according to an embodiment of the present application.

[0021] FIG. 4 shows a communication method applying sub-band non-overlapping full duplex (SBFD) operation according to another embodiment of the present application.

[0022] FIG. 5 shows an example of an activation command MAC CE used as activation information of a TCI state.

[0023] FIG. 6 shows another example of an activation command MAC CE used as activation information of a TCI state.

[0024] FIG. 7 shows an uplink power determination method of a connected state applying sub-band non-overlapping full duplex (SBFD) operation according to another embodiment of the present application.

[0025] FIG. 8 shows a communication method applying sub-band non-overlapping full duplex (SBFD) operation according to an embodiment of the present application.

[0026] FIG. 9 shows a communication method in a TDD system applying SBFD operation according to an embodiment of the present application.

[0027] FIG. 10 shows a communication method in a TDD system applying SBFD operation according to another embodiment of the present application.

[0028] FIG. 11 shows a structure of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0030] It should be understood that the term "and / or" in this document merely describes an associated relationship, which means that there can be three relationships, for example, A and / or B can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0031] To help understand the technical solutions of the present application, the following first introduces several related technologies.

[0032] I. Beam configuration activation indication of unified transmission configuration indicator (TCI) framework

[0033] In order to reduce the signaling, indication, resource, etc. overhead of the beam, reduce the training time of the beam, and enhance the robustness of the beam, a unified TCI framework is proposed. According to whether the channel reciprocity holds, the unified TCI framework sets two types of TCI state types - joint and separate, which are configured by the high layer parameter unifiedTCI-StateType.

[0034] If the parameter unifiedTCI-StateType is configured as joint, the base station will configure a downlink TCI state list by radio resource control (RRC), and will not configure an uplink TCI state list, and then activate multiple TCI state groups by media access control control element (MAC CE), and then indicate one of the TCI state groups by downlink control information (DCI). The TCI state group here contains at most two downlink TCI states. The user equipment (UE) uses the downlink TCI state in the indicated TCI state group for downlink reception and uplink transmission. Among them, the TCI state list is a downlink TCI state list and / or an uplink TCI state list. A downlink TCI state list contains multiple downlink TCI states. An uplink TCI state list contains multiple uplink TCI states. Among them, a TCI state group is composed of several TCI states corresponding to one code point indicating the TCI state area in the indication command. A TCI state group contains several downlink TCI states and / or several uplink TCI states. For example, a TCI state group can include at most two downlink TCI states and two uplink TCI states.

[0035] If the parameter unifiedTCIType is configured as separate, the base station configures a list of downlink TCI states and a list of uplink TCI states using RRC, then activates multiple TCI state groups using MAC CE, and then indicates one of the TCI state groups using DCI. Each TCI state group contains at most two downlink TCI states and at most two uplink TCI states. The UE uses the downlink TCI states in the indicated TCI state group for downlink reception and uses the uplink TCI states in the indicated TCI state group for uplink transmission.

[0036] For single transmission and reception point (STRP) systems, when unifiedTCIStateType is configured as joint and separate, the base station activates TCI state groups using the same extended logical channel ID (eLCID) MAC CE. For multiple transmission and reception point (MTRP) systems, when unifiedTCIStateType is configured as joint and separate, the base station activates TCI state groups using different MAC CEs. The different MAC CEs can be LCID or eLCID different MAC CEs.

[0037] II. Power control for unified TCI framework

[0038] To simplify the power control procedure and enhance the beam level power control, the unified TCI framework associates power control parameters to TCI states.

[0039] Each TCI state is associated with a phase-tracking reference signal (PL-RS) and a set of uplink power control parameters. Each set of uplink power control parameters contains a set of power control parameters for different uplink channels (sounding reference signal SRS, physical uplink control channel PUCCH, physical uplink shared channel PUSCH). Each set of power control parameters for an uplink channel can contain a target received power, a path loss compensation factor, and a closed loop power control index.

[0040] If the parameter unifiedTCI-StateType is configured as joint, the UE calculates the transmit power of the uplink signals using the parameters in the indicated set of power control parameters in the downlink TCI state respectively. If the parameter unifiedTCI-StateType is configured as separate, the UE calculates the transmit power of the uplink signals using the parameters in the indicated set of power control parameters in the uplink TCI state respectively.

[0041] III. Subband configuration of TDD system applying subband non-overlapping full duplex (SBFD)

[0042] As shown in FIG. 1, in the TDD system applying SBFD, the subbands in the frequency domain are configured in three typical modes of {DUD}, {DU} and {UD}.

[0043] The downlink time unit, the uplink time unit or the SBFD time unit in the time domain can be semi-statically configured and can be dynamically modified by DCI. The time unit can be a slot or a symbol.

[0044] In the original TDD system, only the original time unit is included, which is the general term of the original downlink time unit and the original uplink time unit. In the original downlink time unit, the system only has downlink transmission resources; in the original uplink time unit, the system only has uplink transmission resources. Therefore, the meanings expressed by “associated with the original downlink transmission”, “associated with the original downlink time unit” and “associated with the downlink transmission of the original time unit” are the same; the meanings expressed by “associated with the original uplink transmission”, “associated with the original uplink time unit” and “associated with the uplink transmission of the original time unit” are the same.

[0045] In the SBFD TDD system, in addition to the original time unit, there is also the SBFD time unit. In the SBFD time unit, the system has both downlink transmission resources and uplink transmission resources. The uplink and downlink transmissions are performed on different subbands. For obvious downlink features, the meanings expressed by “associated with the SBFD time unit” and “associated with the downlink transmission of the SBFD time unit” are the same. For obvious uplink features, the meanings expressed by “associated with the SBFD time unit” and “associated with the uplink transmission of the SBFD time unit” are the same.

[0046] In the related art, there is no simultaneous uplink and downlink transmission in the same cell of the original TDD system (TDD system without introducing SBFD operation), but there is simultaneous uplink or downlink transmission between different cells due to different frame structures, so the system will have base station-UE co-channel sub-band interference, UE-base station co-channel sub-band interference, inter-cell station-to-station base station-base station co-channel sub-band interference (Co-Channel Interference, CLI), inter-cell co-station sector CLI, and inter-cell UE-UE CLI. The TDD system with SBFD time slots is an iteration of the original TDD system, in addition to containing all the interference and CLI of the original TDD system, due to the existence of simultaneous uplink and downlink transmission in the same cell and between different cells, the system will also have base station self-interference, inter-cell station-to-station base station-base station CLI, inter-cell co-station sector CLI, inter-cell UE-UE CLI, and intra-cell UE-UE CLI.

[0047] Obviously, the TDD system with SBFD time slots has increased many interferences compared to the original TDD system. In order to reduce these interferences, 3GPP has studied methods such as spatial isolation, frequency isolation, beam nulling, digital cancellation, etc. Although the interference has been reduced, many companies believe that the interference level of the SBFD time slot is still higher than that of the original uplink time slot. In addition, these methods to reduce interference will bring additional costs, such as increasing hardware costs and reducing available resources. Therefore, these interferences increased due to simultaneous uplink and downlink transmission will cause the difference between the original uplink time slot and the SBFD time slot in the uplink codebook measurement, and also cause the difference between the original uplink time slot and the SBFD time slot in the uplink received signal Signal to Interference plus Noise Ratio (SINR).

[0048] The original TDD system does not have simultaneous uplink and downlink transmission in the same cell, so the antennas in the antenna array of the base station will transmit and receive at different times. The TDD system with SBFD has simultaneous uplink and downlink transmission in the same cell, so the antennas in the antenna array of the base station will transmit and receive at the same time.

[0049] In order to reduce the base station self-interference of the SBFD time slot, 3GPP designs two separate antenna arrays for the base station, one antenna array performs uplink reception, and the other antenna array can simultaneously perform downlink transmission, which leads to different methods of using different antenna arrays. One method is that the antenna array performing downlink transmission in the SBFD time slot can be used for uplink reception in the original uplink time slot, and the antenna array performing uplink reception in the SBFD time slot can be used for downlink transmission in the original downlink time slot. Another method is that the antenna array performing downlink transmission in the SBFD time slot cannot be used for uplink reception in the original uplink time slot, and the antenna array performing uplink reception in the SBFD time slot cannot be used for downlink transmission in the original downlink time slot. The first method is more fully utilized, that is, the antennas are used in the original uplink and downlink time slots, but it leads to different numbers of antennas in the original uplink and downlink time slots and the SBFD time slot. The second method does not lead to different numbers of antennas, but it does not fully utilize the antennas, that is, some antennas are not used in the original uplink and downlink time slots.

[0050] Most companies tend to use the antenna array of the first method considering that the second method does not fully utilize the antennas and has a greater impact on the original uplink and downlink transmission. The antenna array of the first method leads to different uplink codebook measurements in the original uplink time slot and the SBFD time slot, and leads to different SINRs of the uplink received signals in the original uplink time slot and the SBFD time slot.

[0051] For the path loss measurement and the beam measurement, it is a large-scale channel change, and different interference and antennas will not affect the measurement results of the large-scale parameters. That is, the large-scale results measured in the original time slot are similar to the large-scale results measured in the SBFD time slot. This means that the path loss measurement and the beam measurement only need to be performed in the original time slot or the SBFD time slot, and do not need to be performed in the original time slot and the SBFD time slot respectively.

[0052] In a TDD system applying the SBFD operation, if the same power control parameter is used in the non-SBFD time unit and the SBFD time unit of the uplink when performing the random access procedure, the difference in performance requirements caused by different interference and antennas cannot be coped with.

[0053] FIG. 2 shows an uplink power determination method of a random access procedure applying a sub-band non-overlapping full duplex (SBFD) operation according to an embodiment of the present application.

[0054] The method includes operation S101: a base station (for example, a gNB) indicates a first power control parameter to a user equipment (UE), and the UE acquires the first power control parameter. The first power parameter corresponds to the SBFD time unit, and is used to determine the transmission power of the uplink physical shared channel (PUSCH) corresponding to the SBFD time unit.

[0055] The method further includes operation S102: determining, by the UE, the transmission power of the PUSCH of the corresponding SBFD time unit according to the first power control parameter.

[0056] The power control parameter is a parameter used for calculating or determining the PUSCH transmission power. For example, the power control parameter can include a power compensation amount and a path loss compensation factor. The time unit can be, for example, a slot or a symbol.

[0057] According to the present embodiment, the base station can indicate the uplink transmission power of the corresponding SBFD time unit in the random access procedure to the UE, so that the uplink transmission power of the corresponding SBFD time unit can be flexibly configured as needed to adapt to different specific working conditions.

[0058] In some embodiments, the method further includes operations S103 and S104. In S103, the base station indicates the second power control parameter to the UE, and the UE acquires the second power control parameter. The second power parameter corresponds to a non-SBFD time unit and is used for determining the transmission power of the uplink physical shared channel (PUSCH) of the corresponding non-SBFD time unit. In S104, the UE determines the transmission power of the PUSCH of the corresponding non-SBFD time unit according to the second power control parameter. It should be understood that the first power control parameter and the second power control parameter can be indicated by the base station to the UE in one information or in different information. If indicated in different information, the order can be determined according to actual needs, which is not limited by the present application.

[0059] In some embodiments, the PUSCH corresponds to the third message (Msg3) in the four-step random access procedure. The first power control parameter can include a first power compensation amount and a first path loss compensation factor, and the second power control parameter can include a second power compensation amount and a second path loss compensation factor.

[0060] Target received power P of msg3 PUSCH in random access procedure O_PUSCH is determined by P O_UE_PUSCH and P O_NOMINAL_PUSCH . P O_UE_PUSCH = 0, P O_NOMINAL_PUSCH = P O_PRE + Δ PREAMBLE,Msg3 . P O_PRE is the target received power of PRACH, Δ PREAMBLE,Msg3 is the power compensation amount of msg3 PUSCH. The values of P O_PRE of the non-SBFD time unit (or the original time unit) and the SBFD time unit are indicated by the same high-layer parameter, and the value of Δ PREAMBLE,Msg3 is indicated by a different high-layer parameter.

[0061] Table 1 shows an example of configuration information configuring the first power offset and the second power offset:

[0062] Table 1 PUSCH common configuration information

[0063] In the PUSCH common configuration information (PUSCH-ConfigCommon) of the Table 1 example, the higher layer parameters msg3-DeltaPreamble and msg3-DeltaPreamble-2 represent the Msg3 PUSCH power offset (the second power offset) for a normal time unit and the Msg3 PUSCH power offset (the first power offset) for an SBFD time unit, respectively.

[0064] The PUSCH common configuration information can contain different parameters for indicating the first power offset and the second power offset, such as the aforementioned msg3-DeltaPreamble and msg3-DeltaPreamble-2. Alternatively, the PUSCH common configuration information can contain a parameter for indicating the first power offset and the second power offset together. For example, if msg3-DeltaPreamble-2 is not provided, the Msg3 PUSCH power offset for an SBFD time unit can use the value indicated by msg3-DeltaPreamble.

[0065] Table 2 shows an example of configuration information configuring the first path loss compensation factor and the second path loss compensation factor:

[0066] Table 2 PUSCH power control information

[0067] In the PUSCH power control information (PUSCH-PowerControl) of the Table 2 example, the higher layer parameters msg3-Alpha and msg3-Alpha-2 represent the path loss compensation factor (the second path loss compensation factor) for a normal time unit and the path loss compensation factor (the first path loss compensation factor) for an SBFD time unit, respectively.

[0068] The PUSCH power control information can contain different parameters for indicating the first path loss compensation factor and the second path loss compensation factor, such as the aforementioned msg3-Alpha and msg3-Alpha-2. Alternatively, the PUSCH power control information can contain a parameter for indicating the first path loss compensation factor and the second path loss compensation factor together. For example, if msg3-Alpha-2 is not provided, the path loss compensation factor for an SBFD time unit for Msg3 PUSCH can use the value indicated by msg3-Alpha.

[0069] In some embodiments, the PUSCH corresponds to a MsgB in a two-step random access procedure. The first power control parameter can comprise a first power compensation amount and a first path loss compensation factor, and the second power control parameter can comprise a second power compensation amount and a second path loss compensation factor.

[0070] Target received power P O_PUSCH is determined by P O_UE_PUSCH and P O_NOMINAL_PUSCH , P O_UE_PUSCH = 0, P O_NOMINAL_PUSCH = P O_PRE + Δ MSGA_PUSCH . P O_PRE is the target received power of PRACH, Δ MSGA_PUSCH is the power compensation amount of msgB PUSCH. The values of P O_PRE in the normal time unit and the SBFD time unit are indicated by the same higher layer parameter, while the values of Δ MSGA_PUSCH are indicated by different higher layer parameters.

[0071] Table 4 shows an example of configuration information configuring the first path loss compensation factor and the second path loss compensation factor:

[0072] Table 4 MsgB PUSCH configuration information

[0073] In the MsgB PUSCH configuration information (MsgB-PUSCH-Config) of the Table 4 example, the higher layer parameters msgB-DeltaPreamble and msgB-DeltaPreamble-2 respectively represent the MsgB PUSCH power compensation amount (the second power compensation amount) in the normal time unit and the MsgB PUSCH power compensation amount (the first power compensation amount) in the SBFD time unit.

[0074] The MsgB PUSCH configuration information can contain different parameters for indicating the first power compensation amount and the second power compensation amount respectively, such as the aforementioned msgB-DeltaPreamble and msgB-DeltaPreamble-2. Alternatively, the MsgB PUSCH configuration information can contain a parameter for indicating the first power compensation amount and the second power compensation amount together. For example, if msgB-DeltaPreamble-2 is not provided, the MsgB PUSCH power compensation amount in the SBFD time unit can use the value indicated by msgB-DeltaPreamble.

[0075] Table 4 shows an example of configuration information configuring the first path loss compensation factor and the second path loss compensation factor:

[0076] Table 4 MsgA PUSCH resource information

[0077] In the MsgA PUSCH resource information (MsgA-PUSCH-Resouce) of Table 4 example, the higher layer parameters msgA-Alpha and msgA-Alpha-2 represent the path loss compensation factor (second path loss compensation factor) of MsgA PUSCH for the normal time unit and the path loss compensation factor (first path loss compensation factor) of MsgA PUSCH for the SBFD time unit, respectively.

[0078] The MsgA PUSCH resource information can contain different parameters for indicating the first path loss compensation factor and the second path loss compensation factor, respectively, such as the aforementioned msgA-Alpha and msgA-Alpha-2. Or, the MsgA PUSCH resource information can contain a parameter for indicating the first path loss compensation factor and the second path loss compensation factor together. For example, if msgA-Alpha-2 is not provided, the path loss compensation factor of MsgA PUSCH for the SBFD time unit can use the value indicated by msgA-Alpha.

[0079] In addition, the power control parameters associated with Msg3 and associated with MsgA can also be indicated as backup to each other. For example, if the parameter msgA-DeltaPreamble-2 in Table 3 is not provided, the MsgA PUSCH power compensation amount for the SBFD time unit can use the value of the parameter msg3-DeltaPreamble-2 in Table 1. If the parameter msgA-Alpha-2 in Table 4 is not provided, the path loss compensation factor of MsgA PUSCH for the SBFD time unit can use the value of the parameter msg3-Alpha-2 in Table 2. Similarly, if the parameters msgA-DeltaPreamble and msgA-DeltaPreamble-2 in Table 3 are not provided, the MsgA PUSCH power compensation amounts for the normal time unit and the SBFD time unit can use the values of the parameters msg3-DeltaPreamble and msg3-DeltaPreamble-2 in Table 1, respectively. If the parameters msgA-Alpha and msgA-Alpha-2 in Table 4 are not provided, the path loss compensation factors of MsgA PUSCH for the normal time unit and the SBFD time unit can use the values of the parameters msgA-Alpha and msg3-Alpha-2 in Table 2, respectively.

[0080] In some embodiments, the method shown in FIG. 2 further includes operation S105: the UE sends the PUSCH of the random access to the base station.

[0081] According to the configuration of the first power control parameter, the UE can use the uplink power control parameter associated with the SBFD time unit to calculate the uplink transmission power of the SBFD time unit and accordingly send the uplink signal on the SBFD time unit. Alternatively, according to the configuration of the second power control parameter, the UE can use the uplink power control parameter associated with the non-SBFD time unit to calculate the uplink transmission power of the non-SBFD time unit and accordingly send the uplink signal on the non-SBFD time unit.

[0082] According to the method shown in FIG. 2, in the random access procedure, when the uplink signal with higher SINR is needed, the base station can instruct the UE to use higher uplink transmission power on the SBFD time unit; when the interference to the downlink needs to be reduced, the base station can instruct the UE to use lower uplink transmission power on the SBFD time unit. Thus, different system requirements can be more flexibly addressed.

[0083] In the unified TCI framework, the high-layer parameter unifiedTCI-StateType can be configured as joint and separate. When the unified TCI state type is configured as joint, all TCI states activated by the MAC CE are derived from the downlink TCI state list, which can be used for both downlink transmission and uplink transmission; when the unified TCI state type is configured as separate, part of the TCI states activated by the MAC CE are derived from the downlink TCI state list and can only be used for downlink transmission; part of the TCI states are derived from the uplink TCI state list and can only be used for uplink transmission. The design of different TCI state types can reduce the overhead of beam measurement and MAC CE indication. The high-layer parameter unifiedTCI-StateType is equivalent to indicating the partial association relationship of the TCI state with the uplink and downlink transmission. Some areas in the MAC CE indicate the complete association relationship of the TCI state with the uplink and downlink transmission. In the original TDD system, the uplink and downlink transmission corresponds to the original uplink and downlink time slots, so the high-layer parameter unifiedTCI-StateType and some areas in the MAC CE are equivalent to indicating the association relationship of the TCI state activated by the MAC CE with the original time slots. In the SBFD TDD system, the TCI state can be associated with the SBFD time slot, and the association of the TCI state in the original TDD system with the original uplink and downlink time slots is no longer applicable to the SBFD TDD system.

[0084] To solve the above problems, the application provides a communication method applying sub-band non-overlapping full duplex (SBFD) operation. As shown in FIG. 3, the method comprises operation S201 and operation S202. In S201, the UE determines a first transmission configuration indicator (TCI) state associated with a SBFD time unit; in S202, the UE determines a second TCI state associated with a non-SBFD time unit.

[0085] The first TCI state and the second TCI state can be obtained in different ways. For example, the UE can receive configuration information, activation information and / or indication information of the TCI state from the base station, wherein one or more of them can contain the association relationship between the TCI state and different types of time units; in another implementation, the protocol can predefine the association relationship between the TCI state and different types of time units. According to the association relationship, the TCI state corresponding to the SBFD time unit and the TCI state corresponding to the non-SBFD time unit can be configured, activated or indicated. The specific implementation will be described later.

[0086] According to the method shown in FIG. 3, the UE can determine the TCI state corresponding to the SBFD time unit and the TCI state corresponding to the non-SBFD time unit respectively, so as to correspondingly configure respective parameters for the transmission on the SBFD time unit and the non-SBFD time unit, to flexibly cope with different requirements of the TDD system applying the SBFD operation.

[0087] In some embodiments, the SBFD time unit and the non-SBFD time unit use different downlink TCI states. In some embodiments, the SBFD time unit and the non-SBFD time unit use different uplink TCI states. In the TDD system of SBFD, in the SBFD time slot, using a different downlink TCI state from the original downlink time slot can reduce the interference to the uplink transmission, and also can reduce the interference caused by the uplink transmission; using a different uplink TCI state from the original uplink time slot can reduce the interference to the downlink transmission, and also can reduce the interference caused by the downlink transmission.

[0088] FIG. 4 shows a communication method applying sub-band non-overlapping full duplex (SBFD) operation according to another embodiment of the application. The method can comprise operations S301 to S304. In S301, the base station sends configuration information of the TCI state to the UE. In S302, the base station sends activation information of the TCI state to the UE. In S303, the base station sends indication information of the TCI state to the UE. In S304, the UE determines a first TCI state associated with a SBFD time unit and a second TCI state associated with a non-SBFD time unit according to the association relationship between the TCI state and the time unit.

[0089] The base station can indicate the association between the SBFD time unit and the non-SBFD time unit and the TCI state in any one or more of configuration information, activation information, or indication information. If the configuration information is used to indicate the association, the UE determines the first TCI state and the second TCI state according to the configuration information. If the activation information is used to indicate the association, the UE determines the first TCI state and the second TCI state according to the configuration information. If the indication information is used to indicate the association, the UE determines the first TCI state and the second TCI state according to the configuration information.

[0090] The configuration information of the TCI state can be used to describe a set of predefined TCI states, i.e., the TCI states that can be used. Such configuration is performed at the Radio Resource Control (RRC) protocol layer. The activation information of the TCI state is used to activate a specific TCI state. Such activation is performed at the Medium Access Control (MAC) layer. The base station can transmit the activation information to the UE through downlink control information (such as downlink DCI or Data Control Indication) to inform the UE to enable a specific TCI state. The indication information of the TCI state is used to identify the activated TCI state, which is usually performed at the physical layer.

[0091] In an implementation manner, the configuration information is used to indicate the association between the SBFD time unit and the non-SBFD time unit and the TCI state. For example, the configuration information can be included in the Radio Resource Control (RRC) information.

[0092] The configuration information can include one or more TCI state parameters, and each TCI state parameter is used to indicate the type and / or quantity of the TCI state in a TCI state group. Optionally, the TCI state parameter can also be used to indicate the association between the TCI state in a TCI state group and the SBFD time unit and the non-SBFD time unit. The type of the TCI state refers to whether the TCI state is a downlink TCI state or an uplink TCI state. Different types of TCI states refer to downlink TCI states and uplink TCI states. The downlink TCI state can also be referred to as a joint TCI state. The uplink TCI state can also be referred to as a spatial relation. Table 5 shows an example of TCI state configuration information.

[0093] Table 5 TCI state configuration information

[0094] As shown in Table 5, the high layer parameter unifiedTCI-StateType configures the type of TCI state. When the high layer parameter unifiedTCI-StateType is configured as joint, in the original TDD system or the SBFD TDD system, the same activation command (MAC CE of the same eLCID) can be used to activate the TCI state group. When the high layer parameter unifiedTCI-StateType is configured as separate, in the original TDD system or the SBFD TDD system, the same activation command (MAC CE of the same eLCID) is used to activate the TCI state group.

[0095] The high layer parameter activatedTCI-StateInCP is an example of the foregoing TCI state parameter, which represents the number of TCI states in each TCI state group, and its value can be one of oneDl, oneDl-oneUl, twoDl, oneDl-twoUL, twoDl-oneUl, twoDl, twoUl, or multiple thereof. For example, oneDl indicates that 1 downlink TCI state is activated in one state group; oneDl-oneUl indicates that 1 downlink TCI state and 1 uplink TCI state are activated in one state group; twoDl indicates that 2 downlink TCI states are activated in one state group; oneDl-twoUl indicates that 1 downlink TCI state and 2 uplink TCI states are activated in one state group; twoD-oneUl indicates that 2 downlink TCI states and 1 uplink TCI state are activated in one state group; and twoDl-twoUl indicates that 2 downlink TCI states and 2 uplink TCI states are activated in one state group.

[0096] For example, in the SBFD TDD system, when the high layer parameter unifiedTCI-StateType is configured as joint, the high layer parameter activatedTCI-StateInCP can be configured as oneDl, twoDl; when the high layer parameter unifiedTCI-StateType is configured as separate, the high layer parameter activatedTCI-StateInCP can be configured as oneDl-oneUl, oneDl-twoUl, twoDl-oneUl, twoDl-twoUl.

[0097] The TCI state parameter can also be used to indicate the association of the TCI states in a TCI state group with SBFD time units and non-SBFD time units. For example, the value trij (i, j = 1, 2,...) in the high-layer parameters oneDl, oneDl-oneUl, twoDl, oneDl-twoUl, twoDl-oneUl, twoDl-twoUl in Table 5 represents the association of the TCI states with the uplink and downlink of the non-SBFD time units and the SBFD time units. Table 6 shows an example of the association.

[0098] Table 6 Association of the TCI states indicated by the TCI state parameter with the uplink and downlink of the non-SBFD time units and the SBFD time units

[0099] In some embodiments, the configuration information can only contain one TCI state parameter. For example, the value of activatedTCI-StateInCP can be configured as oneDl-oneUl and tr21, and then the TCI state group activated by the subsequent TCI state activation information and / or the TCI state group selected by the TCI state indication information can adopt this configuration, so as to associate the first downlink TCI state in the selected TCI state group with the downlink transmission of the non-SBFD time units, the uplink transmission of the SBFD time units, and the uplink transmission of the SBFD time units, and associate the first uplink TCI state in the selected TCI state group with the uplink transmission of the non-SBFD time units.

[0100] In some embodiments, the configuration information can contain multiple TCI state parameters. For example, the value of activatedTCI-StateInCP can be configured to include multiple ones of oneDl, oneDl-oneUl, twoDl, oneDl-twoUL, twoDl-oneUl, twoDl, and twoUl, and then the subsequent TCI state activation information and / or the TCI state indication information can include an indication of selecting one or more from the multiple TCI state parameters. For example, twoDl and tr32 can be selected, so as to associate the first downlink TCI state in the selected TCI state group with the downlink transmission of the SBFD time units and the uplink transmission of the SBFD time units, and associate the second downlink TCI state in the selected TCI state group with the downlink transmission of the non-SBFD time units and the uplink transmission of the non-SBFD time units.

[0101] In another implementation, the activation information is used to indicate the association of the SBFD time units and the non-SBFD time units with the TCI states.

[0102] In this embodiment, the UE can also receive configuration information of the TCI state before receiving the activation information of the TCI state. The configuration information includes a TCI state type. The TCI state type can be joint, separate or type3. Table 7 shows an example of the configuration information of the TCI state.

[0103] Table 7 Configuration information of TCI state

[0104] The high-layer parameter unifiedTCI-StateType configures the type of TCI state. In the original TDD system, the high-layer parameter unifiedTCI-StateType is configured as joint or separate. In the SBFD TDD system, the high-layer parameter unifiedTCI-StateType is configured as type3, that is, type3 represents the SBFD specific TCI state type.

[0105] When the high-layer parameter unifiedTCI-StateType is configured as joint, the high-layer parameter configures the downlink TCI state list and does not configure the uplink TCI state list; when the high-layer parameter unifiedTCI-StateType is configured as separate or type3, the high-layer parameter configures the downlink TCI state list and the uplink TCI state list.

[0106] When the high-layer parameter unifiedTCI-StateType is configured as joint, separate or type3, different activation commands (different eLCID MAC CEs) are used to activate the TCI state group. That is, different TCI state types correspond to different activation information.

[0107] Each TCI state group in the activation command contains at most N TCI states, and N is a predefined positive integer.

[0108] In some embodiments, the activation information is used to indicate a single TCI state in the activated TCI state group, that is, the aforementioned N predefined is equal to 1. The activation command contains at least one of the following areas: cell identification (ID), downlink bandwidth part (BWP) ID, uplink BWP ID, TCI state. The TCI state area has at most 8. Each TCI state group contains 1 downlink TCI state. In this case, the first downlink TCI state is associated with the original time unit downlink transmission, the original time unit uplink transmission, the SBFD time unit downlink transmission and the SBFD time unit uplink transmission.

[0109] In some embodiments, the activation information includes a number indication (i.e., N) indicating the number of TCI states in the activated TCI state group. Accordingly, the activation information further includes an indication of the association of the plurality of TCI states with the SBFD time unit and the non-SBFD time unit. For example, if the predefined N is greater than 1, the activation command includes at least one of the following fields: cell ID, downlink BWP ID, uplink BWP ID, B, TCI state. The TCI state field has up to 8*N entries. Each TCI state group contains a number of downlink TCI states and / or uplink TCI states. The B field has up to 8 entries, denoted as B i (i = 1, 2, …, 8). Each B i The number of bits occupied is related to N, indicating the association of the TCI state in the i-th TCI state group with the uplink and downlink transmission of the original time unit and the SBFD time unit. The value of B i The meaning of the value is shown in Table 8.

[0110] Table 8 Indication of the association of the plurality of TCI states with the SBFD time unit and the non-SBFD time unit in the activation information

[0111] In another embodiment, when the high-layer parameter unifiedTCI-StateType is configured as type3, each TCI state group in the activation command contains up to N1 downlink TCI states and / or N2 uplink TCI states, and N1 and / or N2 can be predefined.

[0112] If the predefined N1 is equal to 1 and N2 is equal to 0, the activation command includes the following fields: cell ID, downlink BWP ID, uplink BWP ID, TCI state. The TCI state field has up to 8 entries. Each TCI state group contains 1 downlink TCI state. In this case, the first downlink TCI state is by default associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the downlink transmission of the SBFD time unit, and the uplink transmission of the SBFD time unit.

[0113] If N1 is greater than 1 and N2 is greater than or equal to 1, the following fields are included in the activation command: cell ID, downlink BWP ID, uplink BWP ID, B, TCI state. There are at most 8*N TCI state fields. Each TCI state group includes several downlink TCI states and / or uplink TCI states. There are at most 8 B fields, denoted as Bi (i = 1, 2, …, 8). The number of bits occupied by each Bi is related to N1 and N2, and is used to indicate the association between the TCI states in the i-th TCI state group and the uplink and downlink transmission of the original time unit and the SBFD time unit. In this embodiment, the meaning of the value of Bi is shown in Table 9.

[0114] Table 9: Indication of the association between multiple TCI states in the activation information and SBFD time units and non-SBFD time units

[0115] In the foregoing manner, in combination with the value of the TCI state field in the activation information of the TCI state and the corresponding B value, the association between the TCI states in the corresponding activated TCI state group and the SBFD time unit and the non-SBFD time unit can be determined. After the UE receives the indication information of the TCI state and selects the TCI state group, each TCI state in the TCI state group can be associated with the uplink and downlink transmission of the corresponding SBFD time unit and non-SBFD time unit according to the association.

[0116] In some embodiments, the high-layer parameter unifiedTCI-StateType configures the type of TCI state to include only joint and separate. When the high-layer parameter unifiedTCI-StateType is configured as joint, different activation commands (MAC CEs with different eLCIDs) are used to activate the TCI state group in the original TDD system or the SBFD TDD system. When the high-layer parameter unifiedTCI-StateType is configured as separate, different activation commands (MAC CEs with different eLCIDs) are used to activate the TCI state group in the original TDD system or the SBFD TDD system.

[0117] In the original TDD system, when the high layer parameter unifiedTCI-StateType is configured as joint, the activation command contains at least one of the following areas: cell ID, downlink BWP ID, uplink BWP ID, F, TCI state. In the original TDD system, when the high layer parameter unifiedTCI-StateType is configured as separate, the activation command contains at least one of the following areas: cell ID, downlink BWP ID, uplink BWP ID, F, S, TCI state.

[0118] For the SBFD TDD system, the activation information can include an indication of a plurality of TCI state groups. The indication of the plurality of TCI state groups is used to respectively indicate whether a downlink TCI state is included in the activated plurality of TCI state groups; or the indication of the plurality of TCI state groups is used to respectively indicate whether an uplink TCI state is included in the activated plurality of TCI state groups; or the indication of the plurality of TCI state groups is used to indicate the kind and number of TCI states in the activated plurality of TCI state groups.

[0119] In addition, the activation information can also include an indication of an association relationship, which is used to indicate the association relationship between the TCI states in the plurality of TCI state groups and the SBFD time unit and the non-SBFD time unit.

[0120] In the SBFD TDD system, when the high layer parameter unifiedTCI-StateType is configured as joint, the activation command contains at least one of the following areas: cell ID, downlink BWP ID, uplink BWP ID, F, B, TCI state. Wherein the F area is an example of the aforementioned indication of the TCI state group, and the B area is an example of the aforementioned indication of the association relationship.

[0121] FIG. 5 shows one example of an activation command MAC CE used as activation information of a TCI state. In the example shown in FIG. 5, the F area has a maximum of 16, denoted as F ij (i = 1, 2, …, 8, j = 1, 2). Each F ij occupies 1 bit, which is used to indicate whether the jthdownlink TCI state in the ithTCI state group exists. If F ij is 1, the jthdownlink TCI state in the ithTCI state group exists; if F ij is 0, the jthdownlink TCI state in the ithTCI state group does not exist.

[0122] The TCI state area has a maximum of 16. The TCI state is associated with a downlink TCI state, and each TCI state occupies 7 bits. The B area has a maximum of 8, denoted as B i(i = 1, 2, …, 8). Each B i occupies 4 bits, which is used to indicate the association of the TCI state in the ith TCI state group with the uplink and downlink transmission of the original time unit and the SBFD time unit. The value of B i indicates the meaning of the corresponding F ij and S ij , i.e., the association of the activated TCI state corresponding to each code point with the uplink and downlink transmission of different time units is related to the number and type of activated TCI states. i The meaning indicated by the value of B

[0123] Table 10 Indication of the association of TCI states with SBFD time units and non-SBFD time units in the activation information

[0124] In another embodiment, when the high-layer parameter unifiedTCI-StateType is configured as joint, each B i occupies fewer bits, such as 2 or 3 bits. Taking 2 bits as an example, B i The meaning indicated by the value of B

[0125] Table 11 Indication of the association of TCI states with SBFD time units and non-SBFD time units in the activation information

[0126] In a TDD system of SBFD, when the high-layer parameter unifiedTCI-StateType is configured as separate, the activation command contains at least one of the following areas: cell ID, downlink BWP ID, uplink BWP ID, F, S, B, TCI state. Among them, the F and S areas are examples of the aforementioned indication of TCI state groups, and the B area is an example of the aforementioned indication of the association.

[0127] Figure 6 shows another example of the activation command MAC CE used as the activation information of the TCI state. In the example shown in Figure 6, the F area has a maximum of 16, denoted as F ij (i = 1, 2, …, 8, j = 1, 2). Each F ij occupies 1 bit, which is used to indicate whether the jth downlink TCI state in the ith TCI state group exists. If F ij is 1, the jth downlink TCI state in the ith TCI state group exists; if F ij is 0, the jth downlink TCI state in the ith TCI state group does not exist. The S area has a maximum of 16, denoted as Sij (i = 1, 2, …, 8, j = 1, 2). Each S ij occupies 1 bit, which is used to indicate whether the jthuplink TCI state in the ithTCI state group exists. If S ij is 1, the jthuplink TCI state in the ithTCI state group exists; if S ij is 0, the jthuplink TCI state in the ithTCI state group does not exist.

[0128] The TCI state area has at most 32. If the TCI state is associated with a downlink TCI state, each TCI state occupies 7 bits; if the TCI state is associated with an uplink TCI state, each TCI state occupies 6 bits. The B area has at most 8, denoted as B i (i = 1, 2, …, 8). Each B i occupies 2 bits, which is used to indicate the association of the TCI state in the ithTCI state group with the uplink and downlink transmission of the original time unit and the SBFD time unit. The value of B i represents the meaning related to the value of the corresponding F ij and S ij , that is, the association of the activated TCI state corresponding to each code point with the uplink and downlink transmission of different time units is related to the number and type of activated TCI states. The value of B i represents the meaning as shown in Table 12.

[0129] Table 12 Indication of the association of TCI states in the activation information with SBFD time units and non-SBFD time units

[0130] In another embodiment, when the high-layer parameter unifiedTCI-StateType is configured as separate, each B i occupies fewer bits, such as 1 bit. The value of B i represents the meaning as shown in the following table: B i The value of B

[0131] Table 13 Indication of the association of TCI states in the activation information with SBFD time units and non-SBFD time units

[0132] In another embodiment, when the higher layer parameter unifiedTCI-StateType is configured as joint or separate, each B i occupies a variable number of bits to indicate the association of the TCI states in the ith TCI state group with the uplink and downlink transmissions of the original time unit and the SBFD time unit. i The number of bits and the meaning of the values are related to the corresponding F ij and S ij values.

[0133] In another embodiment, when the higher layer parameter unifiedTCI-StateType is configured as joint or separate, each B i occupies a variable number of bits to indicate the association of the TCI states in the ith TCI state group with the uplink and downlink transmissions of the original time unit and the SBFD time unit. i The number of bits and the meaning of the values are related to the corresponding F ij and S ij values. And in some combinations of F ij and S ij , B i only has one meaning, i.e. there is only one association of the activated TCI states with the uplink and downlink transmissions of different time units, so there is no need for B i region to indicate, i.e. the number of bits of B i region can be 0.

[0134] In another embodiment, when the higher layer parameter unifiedTCI-StateType is configured as joint or separate, the activation command contains at least one of the following regions: cell ID, downlink BWP ID, uplink BWP ID, K, B, TCI state. K region has a maximum of 8, denoted as K i (i = 1, 2, …, 8). Each K i occupies 2 or 3 bits to indicate the type and number of TCI states in the ith TCI state group. B i The number of bits and / or the meaning of the values are related to the corresponding K i values.

[0135] In another embodiment, when the higher layer parameter unifiedTCI-StateType is configured as joint or separate, the activation command contains at least one of the following regions: cell ID, downlink BWP ID, uplink BWP ID, T, TCI state. T region has a maximum of 8, denoted as Ti (i = 1, 2, …, 8). Each T i occupies 3 or 4 bits, which is used to indicate the kind and number of TCI states in the i-th TCI state group and the association with the uplink and downlink transmission of the original time unit and the SBFD time unit.

[0136] In the foregoing embodiments, by configuring the indication of the plurality of TCI state groups and the indication of the association relationship in the activation information of the TCI state, the kind and number of the TCI states in the activated TCI state group and the association relationship between each TCI state in the TCI state group and the SBFD and non-SBFD time units can be explicitly indicated. After the UE receives the indication information of the TCI state and selects the TCI state group, each TCI state in the TCI state group can be associated with the uplink and downlink transmission of the corresponding SBFD time unit and non-SBFD time unit according to the association relationship.

[0137] In some embodiments, the activation information includes first activation information and second activation information, the first activation information indicates the activated TCI state group associated with the SBFD time unit, and the second activation information indicates the activated TCI state group associated with the non-SBFD time unit. The following is a method for determining the association between the TCI state and different time units using the first activation information and the second activation information.

[0138] In method one, the first activation information is associated with the original time unit, and the TCI states in the TCI state group are associated with the downlink and / or uplink transmission of the original time unit. The second activation information is associated with the SBFD time unit, and the TCI states in the TCI state group are associated with the downlink and / or uplink transmission of the SBFD time unit. The UE can receive the indication information, and the TCI area in the indication information simultaneously indicates one TCI state group corresponding to the same code point in the first activation information and the second activation information. The association between the activation information and the time unit can be explicit indication (such as one bit in the activation information is used to indicate), or implicit indication (such as the activation information or the scheduling command of the activation information is transmitted on a certain type of time unit). For example, when using implicit indication, the first activation information or the scheduling command of the first activation information is received on the SBFD time unit, and the second activation information or the scheduling command of the second activation information is received on the non-SBFD time unit.

[0139] In method two, the first activation information is associated with the non-SBFD time unit, and the TCI state in the TCI state group is associated with the downlink and / or uplink transmission of the non-SBFD time unit. The second activation information is associated with the SBFD time unit, and the TCI state in the TCI state group is associated with the downlink and / or uplink transmission of the SBFD time unit. The UE can receive the first indication information and the second indication information. The first indication information is associated with the non-SBFD time unit, and the TCI region in the first indication information indicates one TCI state group in the first scheduling command. The second indication information is associated with the SBFD time unit, and the TCI region in the second indication information indicates one TCI state group in the second scheduling command. The association of the indication information with the time unit can be explicit indication (such as one region in the indication information occupies one bit to indicate) or implicit indication (such as the indication information is transmitted on a certain type of time unit). For example, when using implicit indication, the first indication information is received on the SBFD time unit, and the second indication information is received on the non-SBFD time unit.

[0140] In method three, the first activation information is associated with the non-SBFD time unit, and the TCI state in the TCI state group is associated with the downlink and / or uplink transmission of the non-SBFD time unit. The second activation information is associated with the SBFD time unit, and the TCI state in the TCI state group is associated with the downlink and / or uplink transmission of the SBFD time unit. The UE can receive the indication information, and the first TCI region in the indication information indicates one TCI state group in the second scheduling command, and the second TCI region indicates one TCI state group in the second activation information. Similarly, when using implicit indication, the first activation information or the scheduling command of the first activation information is received on the SBFD time unit, and the second activation information or the scheduling command of the second activation information is received on the non-SBFD time unit.

[0141] In another implementation, the indication information is used to indicate the association of the SBFD time unit and the non-SBFD time unit with the TCI state. For example, the indication information of the TCI state can be contained in the downlink control information (DCI).

[0142] In some embodiments, the indication information can include a selection indication for selecting one from the activated multiple TCI state groups and an association indication for determining the association of the selected TCI state group with the SBFD time unit and the non-SBFD time unit. For example, the TCI field in the DCI occupies 3 bits, indicating one of the activated TCI state groups. The TCI relationship field in the DCI occupies 2 bits, indicating the association of the TCI states in the TCI state group indicated by the TCI field with the uplink and downlink transmission of the original time unit and the SBFD time unit. The TCI state group is indicated by the TCI field in the DCI. The meaning of the TCI relationship field is different for different TCI state types in the high layer configuration and / or different number and / or types of TCI states in different activation commands.

[0143] When the high layer parameter unifiedTCI-StateType is configured as joint, the meaning of the TCI relationship field in the DCI is related to the F field in the activation command. Table 14 shows one example of the meaning of the value of the TCI relationship field in the DCI.

[0144] Table 14

[0145] When the high layer parameter unifiedTCI-StateType is configured as separate, the meaning of the TCI relationship field in the DCI is related to the F and S fields in the activation command. Table 15 shows another example of the meaning of the value of the TCI relationship field in the DCI.

[0146] Table 15

[0147] In another embodiment, the TCI relationship field in the DCI can reuse the TCI selection field in the DCI in the existing 5G standard. In the TDD system of the original time unit of MTRP, the TCI selection field is used to indicate the selection of the TCI state. In the TDD system of the SBFD time unit, the TCI selection field is used to indicate the association of the TCI state with the uplink and downlink transmission of different time units.

[0148] In some embodiments, the indication information includes a first indication and a second indication, the first indication is used to indicate the first TCI state, and the second indication is used to indicate the second TCI state.

[0149] When the high layer parameter unifiedTCI-StateType is configured as joint, in the original TDD system or the SBFD TDD system, the TCI state groups are activated using the same activation command (MAC CE of the same eLCID). When the high layer parameter unifiedTCI-StateType is configured as separate, in the original TDD system or the SBFD TDD system, the TCI state groups are activated using the same activation command (MAC CE of the same eLCID).

[0150] The first indication can be a first TCI field in the DCI. For example, the first TCI field in the DCI occupies 3 bits, indicating one of the activated TCI state groups. The second indication can be a second TCI field in the DCI. For example, the second TCI field in the DCI occupies 3 bits, indicating one of the activated TCI state groups. Wherein, the TCI state indicated by the first TCI field and the TCI state in the TCI state group indicated by the second TCI field are respectively associated with the uplink and downlink transmission of the original time unit and the uplink and downlink transmission of the SBFD time unit.

[0151] Through the above method, the UE can determine the TCI states corresponding to the SBFD time unit and the non-SBFD time unit based on the indication information of the TCI states, so that each TCI state in the TCI state group can be associated with the uplink and downlink transmission of the corresponding SBFD time unit and non-SBFD time unit according to the association relationship.

[0152] In another implementation manner, the association relationship between the SBFD time unit and the non-SBFD time unit and the TCI state can be predefined by the protocol. The UE can obtain the category and number of the plurality of TCI states, and determine the first TCI state corresponding to the SBFD time unit and the second TCI state corresponding to the non-SBFD unit based on the category and number of the plurality of TCI states and the preconfigured corresponding relationship.

[0153] In this way, the association rule is related to the category and number of the TCI states contained in each TCI state group. The following illustrates the association rule by way of example.

[0154] If the i-th TCI state group contains 1 downlink TCI state, the association rule is: the first downlink TCI state is associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the downlink transmission of the SBFD time unit, and the uplink transmission of the SBFD time unit.

[0155] If the i-th TCI state group contains 2 downlink TCI states, the association rule is: the first downlink TCI state is associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the second downlink TCI state is associated with the downlink transmission of the SBFD time unit, the uplink transmission of the SBFD time unit; or the first downlink TCI state is associated with the downlink transmission of the original time unit, the downlink transmission of the SBFD time unit, the second downlink TCI state is associated with the uplink transmission of the original time unit, the uplink transmission of the SBFD time unit; or the first downlink TCI state is associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the downlink transmission of the SBFD time unit, the second downlink TCI state is associated with the uplink transmission of the SBFD time unit; or the first downlink TCI state is associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the uplink transmission of the SBFD time unit, the second downlink TCI state is associated with the downlink transmission of the SBFD time unit.

[0156] If the i-th TCI state group contains 1 downlink TCI state and 1 uplink TCI state, the association rule is: the first downlink TCI state is associated with the downlink transmission of the original time unit, the downlink transmission of the SBFD time unit, the uplink transmission of the SBFD time unit, the first uplink TCI state is associated with the uplink transmission of the original time unit; or the first downlink TCI state is associated with the downlink transmission of the original time unit, the uplink transmission of the original time unit, the downlink transmission of the SBFD time unit, the first uplink TCI state is associated with the uplink transmission of the SBFD time unit; or the first downlink TCI state is associated with the downlink transmission of the original time unit, the downlink transmission of the SBFD time unit, the first uplink TCI state is associated with the uplink transmission of the original time unit, the uplink transmission of the SBFD time unit.

[0157] If the i-th TCI state group contains 1 downlink TCI state and 2 uplink TCI states, the association rule is: the first downlink TCI state is associated with the downlink transmission of the original time unit, the downlink transmission of the SBFD time unit, the first uplink TCI state is associated with the uplink transmission of the original time unit, the second uplink TCI state is associated with the uplink transmission of the SBFD time unit.

[0158] If the i-th TCI state group contains 2 downlink TCI states and 1 uplink TCI state, the association rule is: the first downlink TCI state is associated with the downlink transmission in the normal time unit, the second downlink TCI state is associated with the downlink transmission in the SBFD time unit, and the first uplink TCI state is associated with the uplink transmission in the normal time unit and the uplink transmission in the SBFD time unit; or the first downlink TCI state is associated with the downlink transmission in the normal time unit and the uplink transmission in the normal time unit, the second downlink TCI state is associated with the downlink transmission in the SBFD time unit, and the first uplink TCI state is associated with the uplink transmission in the SBFD time unit.

[0159] If the i-th TCI state group contains 2 downlink TCI states and 2 uplink TCI states, the association rule is: the first downlink TCI state is associated with the downlink transmission in the normal time unit, the second downlink TCI state is associated with the downlink transmission in the SBFD time unit, the first uplink TCI state is associated with the uplink transmission in the normal time unit, and the second uplink TCI state is associated with the uplink transmission in the SBFD time unit.

[0160] In another embodiment, when the high-layer parameter unifiedTCI-StateType is configured as joint, the association relationship between the TCI state and the time unit is indicated by the activation command or the indication command; when the high-layer parameter unifiedTCI-StateType is configured as separate, the association relationship between the TCI state and the time unit is predefined by the rule. Alternatively, when the high-layer parameter unifiedTCI-StateType is configured as separate, the association relationship between the TCI state and the time unit is indicated by the activation command or the indication command; when the high-layer parameter unifiedTCI-StateType is configured as joint, the association relationship between the TCI state and the time unit is predefined by the rule.

[0161] In this way, after the UE determines the TCI state group, the type and the number of TCI states in the TCI state group through the configuration information, the activation information and / or the indication information of the TCI state, the UE can determine the association relationship between each TCI state and the SBFD time unit and the non-SBFD time unit based on the preconfigured association rule, so that each TCI state in the TCI state group can be associated with the uplink and downlink transmission of the corresponding SBFD time unit and non-SBFD time unit according to the association relationship.

[0162] In addition, in a TDD system applying the SBFD operation, when the UE is in the connected state for uplink transmission, if the same power control parameter is used in the non-SBFD time unit and the SBFD time unit of the uplink, the difference in performance requirements caused by interference and different antennas cannot be addressed.

[0163] Correspondingly, the application further provides a method for determining uplink power of a connected state using a sub-band non-overlapping full duplex (SBFD) operation. As shown in FIG. 7, the method includes operations S401-S403.

[0164] In S401, the base station configures an association between a plurality of TCI states and uplink power control parameters to the UE, and the UE acquires the association between the plurality of TCI states and the uplink power control parameters. The association is used to determine the power of uplink transmission associated with SBFD time units and non-SBFD time units.

[0165] In some embodiments, the uplink power control parameters include target received power and / or closed-loop power control index. In other embodiments, the uplink power control parameters further include a loss compensation factor.

[0166] The uplink transmission of the connected state can be, for example, a sounding reference signal (SRS), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH).

[0167] In S402, the UE determines the TCI state of the uplink transmission. In this method, the method for determining the TCI state of the uplink transmission by the UE is not limited, for example, the TCI state of the uplink transmission can be determined in any of the embodiments of the method shown in FIG. 4.

[0168] In S403, the UE determines the power of the uplink transmission associated with SBFD time units and non-SBFD time units based on the association between the TCI state and the uplink power control parameters and the TCI state of the uplink transmission.

[0169] In this embodiment, when the UE is to perform uplink transmission, the UE can determine the power of the uplink transmission associated with the corresponding time unit according to the TCI state of the uplink transmission and the pre-configured association. Thus, the power of the uplink transmission of the UE in different time units can be conveniently and flexibly configured. For example, when the base station wants to have a higher SINR uplink signal, the base station can pre-configure the UE to use a higher uplink transmission power in the SBFD time slot; when the base station wants to reduce the interference to the downlink, the base station can pre-configure the UE to use a lower uplink transmission power in the SBFD time slot.

[0170] In some embodiments, the method further includes operation S404: the UE sends the uplink signal of the connected state to the base station. That is, the UE sends the uplink signal of the connected state to the base station with the uplink transmission power determined in the foregoing manner.

[0171] The target received power P O_PUSCH P O_UE_PUSCH and P O_NOMINAL_PUSCHIt is determined that the path loss compensation factor is denoted as alpha, the closed loop power adjustment state is denoted as CL, and the path loss reference signal is denoted as PL-RS. In the original time unit and the SBFD time unit, P O_NOMINAL_PUSCH Configured by the same high layer parameter, P O_UE_PUSCH Configured by different power control parameters in the TCI state, alpha is configured by different power control parameters in the TCI state, CL is configured by different power control parameters in the TCI state, and PL-RS is configured by the same high layer parameter. The TCI state here can be a downlink TCI state or an uplink TCI state.

[0172] In some embodiments, each of the aforementioned base stations configured to the UE TCI state can include a path loss reference signal PL-RS identifier and an identifier of an uplink power control parameter set. The uplink power control parameter set can include: a first target received power value and a second target received power value, and / or a first closed loop power control index and a second closed loop power control index. Wherein the first target received power value and the first closed loop power control index correspond to the SBFD time unit, and the second target received power value and the second closed loop power control index correspond to the non-SBFD time unit.

[0173] The uplink power control parameter set can further include: a first path loss compensation factor and a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit. Alternatively, the uplink power control parameter set can further include: one path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit.

[0174] In some embodiments, the uplink power control parameter set includes a first uplink power control parameter set and a second uplink power control parameter set, the first uplink power control parameter set corresponding to the SBFD time unit, and the second uplink power control parameter set corresponding to the non-SBFD time unit. The first uplink power control parameter set includes the first target received power value and the first closed loop power control index; the second uplink power control parameter set includes the second target received power value and the second closed loop power control index. Further, the first uplink power control parameter set further includes a path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit; or the first uplink power control parameter set further includes a first path loss compensation factor, and the second uplink power control set further includes a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit.

[0175] The following examples will be used to illustrate the above-mentioned cases.

[0176] In the first way, one TCI state contains one PL-RS ID and one uplink power control ID, i.e. one TCI state is associated with one PL-RS and one uplink power control. One uplink power control contains one uplink power control ID, one p0alpha set for PUSCH, one p0alpha set for PUCCH, one p0alpha set for SRS. One p0alpha set for PUSCH contains two target received power values, two closed loop power control indexes and / or two alpha values. One p0alpha set for PUCCH contains two target received power values, two closed loop power control indexes and / or two alpha values. One p0alpha set for SRS contains two target received power values, two closed loop power control indexes and / or two alpha values. One of the target received power values, closed loop power control indexes and / or alpha values in p0alpha set for PUSCH, PUCCH, SRS is associated with the original time unit, and the other is associated with the SBFD time unit. Tables 16 to 18 are examples of the above-mentioned configuration.

[0177] Table 16 Parameters that can be contained in TCI state

[0178] Table 17 Parameters that can be contained in uplink power control parameter set

[0179] Table 18 High layer parameter configuration

[0180] The high layer parameters p0, Alpha, closedLoopIndex represent target received power value, alpha value, closed loop power control index respectively. The high layer parameters p0-2, Alpha-2, closedLoopIndex-2 represent second target received power value, second alpha value, second closed loop power control index respectively.

[0181] When the UE calculates the uplink transmit power of the original time unit of PUSCH, the target received power, closed loop power control index, and path loss compensation factor use the values of p0 configured in p0AlphaSetforPUSCH, the value of closedLoopIndex configured in ul-powerControl, and the value of Alpha configured in ul-powerControl, respectively. When the UE calculates the uplink transmit power of the SBFD time unit of PUSCH, the target received power, closed loop power control index, and path loss compensation factor use the values of p0-2 configured in p0AlphaSetforPUSCH, the value of closedLoopIndex-2 configured in ul-powerControl, and the value of Alpha-2 configured in ul-powerControl, respectively. The mechanism of the UE calculating the uplink transmit power of different time units of PUCCH and SRS is similar to that of PUSCH.

[0182] In Mode Two, one TCI state contains one PL-RS ID and one uplink power control ID, i.e., one TCI state is associated with one PL-RS and one uplink power control. One UL power control contains one UL power control ID, two p0alpha sets for PUSCH, two p0alpha sets for PUCCH, and / or two p0alpha sets for SRS. One of the p0alpha sets for PUSCH, the p0alpha sets for PUCCH, and / or the p0alpha sets for SRS in the UL power control is associated with the original time unit, and the other is associated with the SBFD time unit. One p0alpha set for PUSCH contains one target received power value, one closed loop power control index, and / or one alpha value. One p0alpha set for PUCCH contains one target received power value, one closed loop power control index, and / or one alpha value. One p0alpha set for SRS contains one target received power value, one closed loop power control index, and / or one alpha value. Tables 19 to 21 are examples of the foregoing configurations.

[0183] Table 19 Parameters that can be contained in a TCI state

[0184] Table 20 Parameters that can be contained in a set of uplink power control parameters

[0185] Table 21 Configuration of high-level parameters

[0186] The high layer parameters p0AlphaSetforPUSCH, p0AlphaSetforPUSCH-2 represent a p0alpha set for PUSCH, a second p0alpha set for PUSCH, respectively. The high layer parameters p0AlphaSetforPUCCH, p0AlphaSetforPUCCH-2 represent a p0alpha set for PUCCH, a second p0alpha set for PUCCH, respectively. The high layer parameters p0AlphaSetforSRS, p0AlphaSetforSRS-2 represent a p0alpha set for SRS, a second p0alpha set for SRS, respectively.

[0187] When the UE calculates the uplink transmit power for a normal time unit of PUSCH, the target received power, the closed loop power control index, the path loss compensation factor use the values of p0, closedLoopIndex, Alpha configured in p0AlphaSetforPUSCH in ul-powerControl, respectively. When the UE calculates the uplink transmit power for a SBFD time unit of PUSCH, the target received power, the closed loop power control index, the path loss compensation factor use the values of p0, closedLoopIndex, Alpha configured in p0AlphaSetforPUSCH-2 in ul-powerControl, respectively. The mechanism of the UE calculating the uplink transmit power for different time units of PUCCH, SRS is similar to PUSCH.

[0188] In the third way, 1 TCI state contains 1 PL-RS ID and 2 uplink power control IDs, i.e. 1 TCI state is associated with 1 PL-RS and 2 uplink power controls. One of the uplink power controls in the TCI state is associated with normal time unit, the other is associated with SBFD time unit. 1 uplink power control contains 1 uplink power control ID, 1 p0alpha set for PUSCH, 1 p0alpha set for PUCCH, 1 p0alpha set for SRS. 1 p0alpha set for PUSCH contains 1 target received power value, 1 closed loop power control index and / or 1 alpha value. 1 p0alpha set for PUCCH contains 1 target received power value, 1 closed loop power control index and / or 1 alpha value. 1 p0alpha set for SRS contains 1 target received power value, 1 closed loop power control index and / or 1 alpha value. Tables 22-25 are examples of the foregoing configurations.

[0189] Table 22 Parameters that can be contained in a TCI state

[0190] Table 23 Parameters that can be contained in the first set of uplink power control parameters

[0191] Table 24 Parameters that can be contained in the second set of uplink power control parameters

[0192] Table 25 High layer parameters configuration

[0193] The high layer parameters ul-powerControl, ul-powerControl-2 represent the UL power control, the second UL power control, respectively.

[0194] When the UE calculates the uplink transmit power for a normal time unit of PUSCH, the target received power, the closed loop power control index, the path loss compensation factor are configured by the values of p0, closedLoopIndex, Alpha in p0AlphaSetforPUSCH in ul-powerControl, respectively. When the UE calculates the uplink transmit power for a SBFD time unit of PUSCH, the target received power, the closed loop power control index, the path loss compensation factor are configured by the values of p0, closedLoopIndex, Alpha in p0AlphaSetforPUSCH in ul-powerControl-2, respectively. The mechanism of calculating the uplink transmit power for different time units of PUCCH, SRS is similar to PUSCH.

[0195] In the above several manners, the first set of uplink power control parameters contains the first path loss compensation factor and the second path loss compensation factor (i.e. two Alpha values) corresponding to the SBFD time unit and the non-SBFD time unit, respectively. The path loss compensation factor belongs to large-scale measurement, which can be performed in the normal time unit or the SBFD time unit. In the following several manners, the first set of uplink power control parameters contains only one path loss compensation factor, which can save signaling overhead.

[0196] The target received power P of the uplink signal in the connected state O_PUSCH P = P + P O_UE_PUSCH P = P + P O_NOMINAL_PUSCH The path loss compensation factor is denoted as alpha, the closed loop power adjustment state is denoted as CL, and the path loss reference signal is denoted as PL-RS. In the normal time unit and the SBFD time unit, P O_NOMINAL_PUSCH P = P + P O_UE_PUSCH P = P + P

[0197] In the fourth way, one TCI state contains one PL-RS ID and one uplink power control ID, i.e., one TCI state is associated with one PL-RS and one uplink power control. One uplink power control contains one uplink power control ID, one p0alpha set for PUSCH, one p0alpha set for PUCCH, and one p0alpha set for SRS. One p0alpha set for PUSCH contains two target received power values, two closed loop power control indexes, and / or one alpha value. One p0alpha set for PUCCH contains two target received power values, two closed loop power control indexes, and / or one alpha value. One p0alpha set for SRS contains two target received power values, two closed loop power control indexes, and / or one alpha value. One of the target received power values, closed loop power control indexes in the p0alpha set for PUSCH, PUCCH, SRS is associated with the normal time unit, and the other is associated with the SBFD time unit. Table 26 and Table 27 are examples of the foregoing configuration.

[0198] Table 26 Parameters that can be contained in a TCI state

[0199] Table 27 Parameters that can be contained in a set of uplink power control parameters

[0200] In the fifth way, one TCI state contains one PL-RS ID and one uplink power control ID, i.e., one TCI state is associated with one PL-RS and one uplink power control. One UL power control contains one UL power control ID, two p0alpha sets for PUSCH, two p0alpha sets for PUCCH, and / or two p0alpha sets for SRS. One of the p0alpha set for PUSCH, PUCCH, and / or SRS in the UL power control is associated with the normal time unit, and the other is associated with the SBFD time unit. One p0alpha set for PUSCH contains one target received power value, one closed loop power control index, and / or one alpha value. One p0alpha set for PUCCH contains one target received power value, one closed loop power control index, and / or one alpha value. One p0alpha set for SRS contains one target received power value, one closed loop power control index, and / or one alpha value. Table 28 and Table 29 are examples of the foregoing configuration.

[0201] Table 28 Parameters that can be contained in a TCI state

[0202] Parameters that can be contained in the first uplink power control parameter set

[0203] In the sixth mode, one TCI state contains one PL-RS ID and two uplink power control IDs, that is, one TCI state is associated with one PL-RS and two uplink power controls. One of the two uplink power controls in the TCI state is associated with the original time unit, and the other is associated with the SBFD time unit. One uplink power control contains one uplink power control ID, one p0alpha set of PUSCH, one p0alpha set of PUCCH, and one p0alpha set of SRS. One p0alpha set of PUSCH contains one target received power value, one closed-loop power control index, and / or one alpha value. One p0alpha set of PUCCH contains one target received power value, one closed-loop power control index, and / or one alpha value. One p0alpha set of SRS contains one target received power value, one closed-loop power control index, and / or one alpha value. Tables 30 to 32 are examples of the foregoing configurations.

[0204] Parameters that can be contained in the TCI state

[0205] Parameters that can be contained in the first uplink power control parameter set

[0206] Parameters that can be contained in the second uplink power control parameter set

[0207] In any of the foregoing modes, when the UE is to perform uplink transmission, the UE can determine the power of the uplink transmission associated with the corresponding time unit according to the TCI state of the uplink transmission and the preconfigured association relationship. Thus, the power of the uplink transmission of the UE in different time units can be conveniently and flexibly configured.

[0208] In the association technology, due to different uplink interference and antennas, the uplink layers and codebooks of the PUSCH of the two time slots are different. Therefore, different SRS resource sets need to be used to measure the uplink layers and codebooks, and different uplink layer and codebook regions need to be used to indicate the uplink layers and codebooks. How to configure the measurement of the uplink layers and codebooks of the PUSCH of the original time slot and the SBFD time slot and how to indicate the use of the uplink layers and codebooks of the PUSCH of the original time slot and the SBFD time slot are problems to be solved.

[0209] In addition, due to the uplink interference and different antennas, the channel correlation of the two time slots is not good, resulting in a large difference in MCS. In addition to interference and antennas, the size of the uplink frequency domain resource of the SBFD time slot is very different from that of the original uplink time slot. Previously, 3GPP discussed some rules to align the frequency domain resource allocation in uplink repeated transmission. These rules will increase the complexity of the UE (for example, do we need to redefine the DCI decoding time). Due to the difference in uplink codebooks, uplink repeated transmission on the two time slots requires DCI to indicate two codebooks at the same time, while transmission in only one time slot requires DCI to indicate only one codebook. Therefore, for non-latency-sensitive services, transmission in only one time slot can be considered; for latency-sensitive services, transmission in both time slots can be considered. Therefore, the following problems need to be solved: how to configure uplink repeated transmission to be transmitted only in the original uplink time slot, or only in the SBFD time slot, or both in the original uplink time slot and in the SBFD time slot, and the number of uplink layers and codebooks used for PUSCH repeated transmission.

[0210] Correspondingly, the application provides a communication method applying sub-band non-overlapping full duplex (SBFD) operation. As shown in FIG. 8, the method comprises operations S501-S504.

[0211] In S501, a base station configures a first set of sounding reference signal (SRS) resources and a second set of SRS resources for a user equipment (UE), and the UE acquires the configuration of the first set of SRS resources and the second set of SRS resources. The first set of SRS resources corresponds to a SBFD time unit, and the second set of SRS resources corresponds to a non-SBFD time unit.

[0212] In S502, the UE transmits SRS to the base station on SRS resources in the first set of SRS resources or the second set of SRS resources, and the base station receives SRS on SRS resources in the first set of SRS resources or the second set of SRS resources.

[0213] In S503, the base station transmits indication information of SRS measurement, and the UE receives the indication information of SRS measurement.

[0214] In S504, according to the indication information, the UE transmits a physical uplink shared channel (PUSCH), and the base station receives the PUSCH.

[0215] In the present manner, the SRS resource sets can be configured for the SBFD time unit and the non-SBFD time unit respectively, so as to flexibly cope with different requirements of the SBFD TDD system. For example, large-scale measurement is performed in the original time unit or the SBFD time unit, which can save the latency and overhead of beam and loss measurement. Small-scale measurement is performed in the original time unit and the SBFD time unit respectively, which can improve the measurement accuracy of the number of layers and precoding information of the uplink. In the SBFD time unit, using different uplink layer numbers and precoding indications in the original time unit can obtain uplink signals with higher SINR.

[0216] In the configuration information, the high-layer parameter configures two SRS resource sets based on codebook / non-codebook transmission. The one SRS resource set contains a plurality of SRS resources, and the number of SRS resources in the two SRS resource sets is the same. The two SRS resource sets or the SRS resources in the two SRS resource sets are respectively associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit. That is, all SRS resources in the one SRS resource set can only be transmitted in the uplink resources of the original time unit or the uplink resources of the SBFD time unit, and cannot be transmitted in both the uplink resources of the original time unit and the uplink resources of the SBFD time unit.

[0217] The indication information can be, for example, DCI. The indication information can include an SRS resource set indicator area, a first SRS resource indicator (SRI) area, a second SRI area, a precoding information and layer number area, and a precoding information area; the first SRI area and the precoding information and layer number area correspond to a first time unit, and the first time unit is the SBFD time unit or the non-SBFD time unit; the second SRI area and the precoding information area correspond to a second time unit, and the second time unit is the non-SBFD time unit or the SBFD time unit accordingly.

[0218] In some embodiments, the PUSCH transmission adopts non-codebook transmission; the SRS resource set indicator area occupies 0 bits; the first SRI area occupies N1 bits, where N1 is a positive integer; the second SRI area occupies N1 or N2 bits, where N2 is a positive integer smaller than N1; the precoding information and layer number area occupies 0 bits; and the precoding information area occupies 0 bits. The two SRS resource indication areas are respectively associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit, i.e., are respectively used to indicate the SRS resources in the SRS resource set associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit.

[0219] If the first SRI region and the second SRI region both occupy N1 bits, the association of the two SRS resource indication regions and the precoding information indication region with the original time unit and the SBFD time unit is fixed. The first SRI region is associated with the original time unit, and the second SRI region is associated with the SBFD time unit. Alternatively, the first SRI region is associated with the SBFD time unit, and the second SRI region is associated with the original time unit.

[0220] If the first SRI region and the second SRI region occupy N1 and N2 bits respectively, the number of bits of the second SRI region needs to be determined according to the number of layers indicated by the first SRI region, and the association of the two SRI regions and the precoding information indication region with the original time unit and the SBFD time unit is not fixed. The first SRI region is associated with one reference time unit in the scheduling time unit, and the second SRI region is associated with a time unit different from the reference time unit. The reference time unit can be the first time unit in the scheduling PUSCH transmission or the time unit of the PDCCH transmission. In this way, N2 < N1, which can save signaling overhead.

[0221] In some embodiments, the PUSCH transmission adopts codebook transmission; the SRS resource set indication region occupies 0 bits; the first SRI region occupies M1 bits, where M1 is a positive integer; the second SRI region occupies the M1 bits; the precoding information and layer number region occupies M2 bits, where M2 is a positive integer; the precoding information region occupies M2 or M3 bits, where M3 is a positive integer smaller than M2. The two SRS resource indication regions are respectively associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit, i.e., are respectively used to indicate the SRS resources in the SRS resource set associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit. The first precoding information and layer number region and the second precoding information region are respectively associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit, i.e., are respectively used to indicate the precoding information associated with the uplink transmission of the original time unit and the uplink transmission of the SBFD time unit.

[0222] If the first SRS resource indication and the second SRS resource indication region occupy the same number of bits, the association of the two SRS resource indication regions and the precoding information indication region with the original time unit and the SBFD time unit is fixed. The first SRS resource indication, the first precoding information and layer number region are associated with the original time unit, and the second SRS resource indication, the second precoding information region are associated with the SBFD time unit. Alternatively, the first SRS resource indication, the first precoding information and layer number region are associated with the SBFD time unit, and the second SRS resource indication, the second precoding indication region are associated with the original time unit.

[0223] If the first precoding information and layer number region and the second precoding information region occupy M2 and M3 bits respectively, the number of bits of the second precoding information region needs to be determined according to the layer number indicated by the first precoding information and layer number region, and the association of the first SRI region, the first precoding information and layer number region, the second SRI region, the second precoding information region with the original time unit and the SBFD time unit is not fixed. The first precoding information and layer number region is associated with a reference time unit in the scheduling time unit, and the second precoding information indication region is associated with a time unit different from the reference time unit type. The reference time unit can be the first time unit in the scheduling PUSCH transmission, or the time unit of the PDCCH transmission. In this way, M3 < M2, which can save signaling overhead.

[0224] In another embodiment, in a TDD system with SBFD, if the high layer parameter configures 2 SRS resource sets based on non-codebook transmission, the SRS resource set indication region in the DCI occupies 2 bits. The first code point (such as '00') of this region indicates that the PUSCH is transmitted only in the uplink resources of the original time unit; the second code point (such as '01') indicates that the PUSCH is transmitted only in the uplink resources of the SBFD time unit; the third code point (such as '10') and / or the fourth code point (such as '11') indicate that the PUSCH is transmitted in both the uplink resources of the original time unit and the SBFD time unit. The association of the first SRS resource indication, the second SRS resource indication, the first precoding and layer number, and the second precoding region with different time units is the same as above.

[0225] FIG. 9 shows a communication method in a TDD system applying SBFD operation according to an embodiment of the present application. It should be understood that the method shown in FIG. 9 can only perform part of the steps therein to achieve different functions. For example, only the method of determining the uplink power control in the random access procedure can be performed, only the method of determining the uplink power control in the connected state can be performed, only the method of determining the TCI state for different time units can be performed, or only the method of allocating different SRS resource sets for different time units can be performed. In addition, the order of operations in FIG. 9 is only an example and is not limited, and in actual application, it can be adjusted as needed as long as the corresponding function can be realized.

[0226] As shown in FIG. 9, the method can include operations S601-S618.

[0227] S601: The base station transmits uplink power control parameters associated with different types of time units.

[0228] S602: UE calculates uplink transmit power. UE calculates uplink transmit power of normal time unit using uplink power control parameters associated with normal time unit; UE calculates uplink transmit power of SBFD time unit using uplink power control parameters associated with SBFD time unit.

[0229] S603: UE transmits PUSCH of random access. In normal time unit, UE transmits uplink signal using uplink transmit power of normal time unit; in SBFD time unit, UE transmits uplink signal using uplink transmit power of SBFD time unit.

[0230] S604: UE reports capability of supporting SBFD.

[0231] S605: Base station transmits configuration information of TCI state. TCI state contains uplink power control parameters associated with different types of time units.

[0232] S606: Base station transmits beam management CSI-RS. CSI-RS resources in one CSI-RS resource set can only be transmitted in one type of time unit.

[0233] S607: UE reports CSI.

[0234] S608: UE transmits beam management SRS. SRS resources in one SRS resource set can only be transmitted in one type of time unit.

[0235] S609: Base station transmits activation information of TCI state.

[0236] S610: Base station transmits indication information of TCI state.

[0237] S611: Base station transmits association information of TCI state and different types of time units. This information specifically indicates the association of TCI state and uplink and downlink transmission of different time units. This information can be included in the configuration information of TCI state, or included in the activation information of TCI state, or included in the indication information of TCI state.

[0238] S612: UE calculates uplink transmit power. UE calculates uplink transmit power of normal time unit using uplink power control parameters associated with normal time unit in TCI state associated with uplink transmission of normal time unit in indicated TCI state group; UE calculates uplink transmit power of SBFD time unit using uplink power control parameters associated with SBFD time unit in TCI state associated with uplink transmission of SBFD time unit in indicated TCI state group.

[0239] S613: UE transmits uplink signal (SRS, PUCCH, PUSCH) in connected state. In original uplink time unit, UE transmits uplink signal using QCL information in TCI state associated with original uplink transmission in indicated TCI state group, calculated uplink transmit power of original time unit. In SBFD time unit, UE transmits uplink signal using QCL information in TCI state associated with SBFD time unit's uplink transmission in indicated TCI state group, calculated uplink transmit power of SBFD time unit.

[0240] S614: UE receives downlink signal (CSI-RS, PDCCH, PDSCH) in connected state. In original downlink time unit, UE receives downlink signal using QCL information in TCI state associated with original downlink transmission in indicated TCI state group. In SBFD time unit, UE receives downlink signal using QCL information in TCI state associated with SBFD time unit's downlink transmission in indicated TCI state group.

[0241] S615: Base station transmits association information of SRS and / or PUSCH with different type time unit.

[0242] S616: UE transmits codebook / non-codebook SRS. In original time unit, UE transmits SRS in SRS resource set associated with original time unit; in SBFD time unit, UE transmits SRS in SRS resource set associated with SBFD.

[0243] S617: Base station transmits indication information of precoding and layer number associated with different type time unit.

[0244] S618: UE transmits PUSCH in connected state. In original uplink time unit, UE transmits uplink signal using QCL information in TCI state associated with original uplink transmission in indicated TCI state group, calculated uplink transmit power of original time unit and / or indicated layer number and precoding associated with original time unit. In SBFD time unit, UE transmits uplink signal using QCL information in TCI state associated with SBFD time unit's uplink transmission in indicated TCI state group, calculated uplink transmit power of SBFD time unit and / or indicated layer number and precoding associated with SBFD time unit.

[0245] FIG. 10 illustrates a method of communication in a TDD system applying SBFD operation according to another embodiment of the present application. It should be understood that the method shown in FIG. 10 can only perform part of the steps therein to achieve different functions. For example, the method of determining uplink power control in a random access procedure can be performed only, the method of determining uplink power control in a connected state can be performed only, the method of determining TCI states for different time units can be performed only, or the method of allocating different SRS resource sets for different time units can be performed only. In addition, the order of operations in FIG. 10 is only an example and is not limiting, and in actual applications, it can be adjusted as needed as long as the corresponding functions can be achieved.

[0246] As shown in FIG. 10, the method can include operations S701-S718.

[0247] S701: The base station transmits uplink power control parameters associated with different types of time units.

[0248] S702: The UE calculates uplink transmit power. The UE calculates uplink transmit power for an original time unit using uplink power control parameters associated with the original time unit; and the UE calculates uplink transmit power for an SBFD time unit using uplink power control parameters associated with the SBFD time unit.

[0249] S703: The UE transmits PUSCH for random access. In an original time unit, the UE transmits an uplink signal using uplink transmit power for the original time unit; and in an SBFD time unit, the UE transmits an uplink signal using uplink transmit power for the SBFD time unit.

[0250] S704: The UE reports capability support for SBFD.

[0251] S705: The base station transmits configuration information of TCI states. The TCI states include uplink power control parameters associated with different types of time units.

[0252] S706: The base station transmits CSI-RS for beam management. The CSI-RS resources in one CSI-RS resource set can only be transmitted in one type of time unit.

[0253] S707: The UE reports CSI.

[0254] S708: The UE transmits SRS for beam management. The SRS resources in one SRS resource set can only be transmitted in one type of time unit.

[0255] S709: The base station transmits activation information of TCI states.

[0256] S710: The base station transmits indication information of TCI states.

[0257] S711: Predefine the association information between TCI states and different types of time units.

[0258] S712: UE calculates the uplink transmission power. UE calculates the uplink transmission power of the original time unit using the uplink power control parameters associated with the original time unit in the TCI state associated with the uplink transmission of the original time unit in the indicated TCI state group; UE calculates the uplink transmission power of the SBFD time unit using the uplink power control parameters associated with the SBFD time unit in the TCI state associated with the uplink transmission of the SBFD time unit in the indicated TCI state group.

[0259] S713: UE transmits the uplink signal (SRS, PUCCH, PUSCH) in the connected state. In the original uplink time unit, UE transmits the uplink signal using the QCL information in the TCI state associated with the original uplink transmission in the indicated TCI state group and the calculated uplink transmission power of the original time unit. In the SBFD time unit, UE transmits the uplink signal using the QCL information in the TCI state associated with the uplink transmission of the SBFD time unit in the indicated TCI state group and the calculated uplink transmission power of the SBFD time unit.

[0260] S714: UE receives the downlink signal (CSI-RS, PDCCH, PDSCH) in the connected state. In the original downlink time unit, UE receives the downlink signal using the QCL information in the TCI state associated with the original downlink transmission in the indicated TCI state group. In the SBFD time unit, UE receives the downlink signal using the QCL information in the TCI state associated with the downlink transmission of the SBFD time unit in the indicated TCI state group.

[0261] S715: Base station transmits the association information between SRS and / or PUSCH and different types of time units.

[0262] S716: UE transmits codebook / non-codebook SRS. In the original time unit, UE transmits SRS associated with the original time unit; in the SBFD time unit, UE transmits SRS associated with the SBFD.

[0263] S717: Base station transmits indication information of the number of precoding and layers associated with different types of time units.

[0264] S718: The UE transmits the PUSCH in the connected state. In the original uplink time unit, the UE transmits the uplink signal using the QCL information in the TCI state associated with the original uplink transmission in the indicated TCI state group, the calculated uplink transmission power of the original time unit, and / or the indicated number of layers and precoding associated with the original time unit. In the SBFD time unit, the UE transmits the uplink signal using the QCL information in the TCI state associated with the uplink transmission of the SBFD time unit in the indicated TCI state group, the calculated uplink transmission power of the SBFD time unit, and / or the indicated number of layers and precoding associated with the SBFD time unit.

[0265] FIG. 11 is a schematic block diagram of a communication device 800 according to an embodiment of the present application. As shown in FIG. 11, the communication device 800 includes a processor 801 and a memory 802, and the processor 801 is communicatively connected with the memory 802. The communication device 800 can be, for example but not limited to, a user equipment (UE) or a base station (gNB), etc. In some embodiments, the communication device 800 can further include a transceiver for transmitting / receiving data, or only include a transmitting circuit for transmitting data, or only include a receiving circuit for receiving data. The memory 802 of the communication device 800 is configured to store program instructions, which can be executed by the processor 801 to implement the wireless communication method or the power determination method described in any of the foregoing embodiments.

[0266] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with a signal processing capability. In the implementation process, the steps of the method embodiments described above can be completed by an integrated logic circuit or an instruction in the form of software in the processor.

[0267] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory. The embodiments of the present application also provide a computer readable storage medium for storing a computer program.

[0268] Optionally, the computer readable storage medium can be applied to the communication device in the embodiments of the present application, and the computer program makes the computer execute the corresponding processes realized by the communication device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be described here. Alternatively, the computer readable storage medium can be applied to the user equipment or the base station in any of the embodiments of the present application, and the computer program makes the computer execute the processes realized by the user equipment or the base station in the various methods of the embodiments of the present application. For the sake of brevity, they will not be described here.

[0269] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0270] Optionally, the computer program product can be applied to the communication device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the communication device in each method of the embodiment of the present application. For brevity, details are not described herein.

[0271] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software manner depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0272] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for determining uplink power of a random access procedure applying sub-band non-overlapping full duplex (SBFD) operation, performed by a user equipment (UE), comprising: obtaining a first power control parameter corresponding to a SBFD time unit; and determining a transmit power of a physical uplink shared channel (PUSCH) corresponding to the SBFD time unit according to the first power control parameter. 2.The method of claim 1, further comprising: obtaining a second power control parameter corresponding to a non-SBFD time unit; and determining a transmit power of a physical uplink shared channel (PUSCH) corresponding to the non-SBFD time unit according to the second power control parameter. The PUSCH corresponds to a third message (Msg3) in a four-step random access procedure. The first power control parameter comprises a first power offset and a first path loss compensation factor, and the second power control parameter comprises a second power offset and a second path loss compensation factor, and the obtaining the first power control parameter corresponding to the SBFD time unit and the obtaining the second power control parameter corresponding to the non-SBFD time unit comprise: receiving PUSCH general configuration information and PUSCH power control information; wherein the PUSCH general configuration information indicates the first power offset and the second power offset, and the PUSCH power control information indicates the first path loss compensation factor and the second path loss compensation factor. 5.The method of claim 4, wherein: the PUSCH general configuration information contains different parameters for indicating the first power offset and the second power offset, respectively; or the PUSCH general configuration information contains a same parameter for indicating the first power offset and the second power offset together. 6.The method of claim 4, wherein: the PUSCH power control information contains different parameters for indicating the first path loss compensation factor and the second path loss compensation factor, respectively; or the PUSCH power control information contains a same parameter for indicating the first path loss compensation factor and the second path loss compensation factor together. The PUSCH corresponds to an A message (MsgA) in a two-step random access procedure. The first power control parameter comprises a first power offset and a first path loss compensation factor, and the second power control parameter comprises a second power offset and a second path loss compensation factor, and the obtaining the first power control parameter corresponding to the SBFD time unit and the obtaining the second power control parameter corresponding to the non-SBFD time unit comprise: receiving MsgA PUSCH configuration information and MsgA PUSCH resource information; wherein the MsgA PUSCH configuration information indicates the first power offset and the second power offset, and the MsgA PUSCH resource information indicates the first path loss compensation factor and the second path loss compensation factor.

3. The method of claim 2, wherein, 9.The method of claim 8, wherein: the MsgA PUSCH configuration information contains different parameters for indicating the first power offset and the second power offset, respectively; or the MsgA PUSCH configuration information contains a same parameter for indicating the first power offset and the second power offset together.

4. The method of claim 3, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ 7. The method of claim 2, wherein, ​ 8. The method of claim 7, wherein, ​ ​ ​ ​ ​ The MsgA PUSCH configuration information contains a same parameter for jointly indicating the first power compensation quantity and the second power compensation quantity.

10. The method of claim 8, wherein: The MsgA PUSCH resource information contains different parameters for respectively indicating the first path loss compensation factor and the second path loss compensation factor; or The MsgA PUSCH resource information contains a same parameter for jointly indicating the first path loss compensation factor and the second path loss compensation factor. 11.A random access method applying a sub-band non-overlapping full duplex (SBFD) operation, performed at a base station, wherein, comprises: indicating, to a user equipment (UE), a first power control parameter corresponding to a SBFD time unit; wherein the first power control parameter is used to determine a transmit power of an uplink physical shared channel (PUSCH) corresponding to the SBFD time unit.

12. The method of claim 11, wherein, further comprises: indicating, to the UE, a second power control parameter corresponding to a non-SBFD time unit; wherein the second power control parameter is used to determine a transmit power of an uplink physical shared channel (PUSCH) corresponding to the non-SBFD time unit.

13. The method of claim 12, wherein, The PUSCH corresponds to a third message (Msg3) in a four-step random access procedure.

14. The method of claim 13, wherein, The first power control parameter comprises a first power compensation quantity and a first path loss compensation factor, and the second power control parameter comprises a second power compensation quantity and a second path loss compensation factor, and the indicating, to a user equipment (UE), a first power control parameter corresponding to a SBFD time unit and the indicating, to the UE, a second power control parameter corresponding to a non-SBFD time unit comprises: sending, to the UE, PUSCH general configuration information and PUSCH power control information; wherein the PUSCH general configuration information indicates the first power compensation quantity and the second power compensation quantity, and the PUSCH power control information indicates the first path loss compensation factor and the second path loss compensation factor.

15. The method of claim 14, wherein: The PUSCH general configuration information contains different parameters for respectively indicating the first power compensation quantity and the second power compensation quantity; or The PUSCH general configuration information contains a same parameter for jointly indicating the first power compensation quantity and the second power compensation quantity.

16. The method of claim 14, wherein: The PUSCH power control information contains different parameters for respectively indicating the first path loss compensation factor and the second path loss compensation factor; or The PUSCH power control information contains a same parameter for jointly indicating the first path loss compensation factor and the second path loss compensation factor.

17. The method of claim 12, wherein, The PUSCH corresponds to an A message (MsgA) in a two-step random access procedure.

18. The method of claim 17, wherein, The first power control parameter comprises a first power compensation quantity and a first path loss compensation factor, and the second power control parameter comprises a second power compensation quantity and a second path loss compensation factor, and the indicating, to a user equipment (UE), a first power compensation quantity corresponding to a SBFD time unit and the indicating, to the UE, a second power compensation quantity corresponding to a non-SBFD time unit comprises: sending, to the UE, MsgA PUSCH configuration information and MsgA PUSCH resource information; The MsgA PUSCH configuration information indicates the first power compensation quantity and the second power compensation quantity, and the MsgA PUSCH resource information indicates the first path loss compensation factor and the second path loss compensation factor.

19. The method of claim 18, wherein: the MsgA PUSCH configuration information includes different parameters for indicating the first power compensation quantity and the second power compensation quantity, respectively; or the MsgA PUSCH configuration information includes a same parameter for indicating the first power compensation quantity and the second power compensation quantity together.

20. The method of claim 18, wherein: the MsgA PUSCH resource information includes different parameters for indicating the first path loss compensation factor and the second path loss compensation factor, respectively; or the MsgA PUSCH resource information includes a same parameter for indicating the first path loss compensation factor and the second path loss compensation factor together.

21. A communication method of applying sub-band non-overlapping full duplex (SBFD) operation, performed at a user equipment (UE), comprising: determining a first transmission configuration indicator (TCI) state associated with a SBFD time unit; and determining a second TCI state associated with a non-SBFD time unit.

22. The method of claim 21, wherein: the SBFD time unit and the non-SBFD time unit employ different downlink TCI states.

23. The method of claim 21, wherein: the SBFD time unit and the non-SBFD time unit employ different uplink TCI states. The determining the first TCI state and the determining the second TCI state comprise:

24. The method of claim 21, wherein, receiving configuration information of TCI states, the configuration information being used to indicate association of the SBFD time unit and the non-SBFD time unit with the TCI states; and determining the first TCI state and the second TCI state according to the configuration information of the TCI states.

25. The method of claim 24, wherein: the configuration information includes one or more TCI state parameters, each of the TCI state parameters being used to indicate a kind and / or a number of TCI states in a TCI state group.

26. The method of claim 25, wherein: the TCI state parameters are further used to indicate association of the TCI states in a TCI state group with the SBFD time unit and the non-SBFD time unit.

27. The method of claim 26, further comprising: receiving activation information of TCI states; wherein the configuration information includes a plurality of the TCI state parameters, and the activation information includes an indication of selection of one or more of the plurality of the TCI state parameters. The determining the first TCI state and the determining the second TCI state comprise:

28. The method of claim 21, wherein, receiving activation information of TCI states, the activation information being used to indicate association of the SBFD time unit and the non-SBFD time unit with the TCI states; and ​ determining the first TCI state and the second TCI state according to the activation information of the TCI state. 29.The method of claim 28, further comprising: receiving configuration information of TCI states, wherein the configuration information comprises TCI state types, and the TCI state types are joint, independent or a third type; wherein different TCI state types correspond to different activation information. 30.The method of claim 28, wherein the activation information is used to indicate a single TCI state in an activated TCI state group, and the single TCI state is associated with uplink and downlink transmissions of the SBFD time unit and uplink and downlink transmissions of the non-SBFD time unit. 31.The method of claim 28, wherein the activation information comprises a quantity indication, and the quantity indication is used to indicate a quantity of multiple TCI states in an activated TCI state group; the activation information further comprises an indication of association of the multiple TCI states with the SBFD time unit and the non-SBFD time unit. 32.The method of claim 31, wherein the multiple TCI states comprise N TCI states, wherein the N is a predefined integer; or the multiple TCI states comprise N 1 uplink TCI states and N 2 downlink TCI states, wherein the N 1 and the N 2 are predefined integers. 33.The method of claim 28, wherein the activation information comprises a plurality of TCI state group indications, and the plurality of TCI state group indications are used to respectively indicate whether downlink TCI states are included in activated TCI state groups; or the plurality of TCI state group indications are used to respectively indicate whether uplink TCI states are included in activated TCI state groups; or the plurality of TCI state group indications are used to indicate a kind and a quantity of TCI states in activated TCI state groups. 34.The method of claim 33, wherein the activation information further comprises an indication of association, and the indication of association is used to indicate association of TCI states in the plurality of TCI state groups with the SBFD time unit and the non-SBFD time unit. 35.The method of claim 28, wherein the activation information comprises first activation information and second activation information, and the first activation information indicates an activated TCI state group associated with the SBFD time unit, and the second activation information indicates an activated TCI state group associated with the non-SBFD time unit. 36.The method of claim 35, further comprising: receiving indication information, and a TCI area in the indication information indicates one TCI state group corresponding to a same codepoint in the first activation information and the second activation information. 37.The method of claim 35, further comprising: receiving indication information, the indication information comprising a first TCI region and a second TCI region, the first TCI region indicating one TCI state group in the first activation information, and the second TCI region indicating one TCI state group in the second activation information. 38.The method of claim 37, wherein, the first activation information or a scheduling command of the first activation information is received on the SBFD time unit, and the second activation information or a scheduling command of the second activation information is received on the non-SBFD time unit. 39.The method of claim 35, further comprising: receiving first indication information and second indication information, the first indication information indicating one TCI state group in a first scheduling command associated with the SBFD time unit, and the second indication information indicating one TCI state group in a second scheduling command associated with the non-SBFD time unit. 40.The method of claim 39, wherein, the first indication information is received on the SBFD time unit, and the second indication information is received on the non-SBFD time unit.

41. The method of claim 21, wherein, the determining the first TCI state and the determining the second TCI state comprise: receiving indication information of TCI states, the indication information indicating association of the SBFD time unit and the non-SBFD time unit with the TCI states; and determining the first TCI state and the second TCI state according to the indication information of the TCI states. 42.The method of claim 41, wherein, the indication information comprises a selection indication and an association indication, the selection indication being used to select one from a plurality of activated TCI state groups, and the association indication being used to determine association of the selected TCI state group with the SBFD time unit and the non-SBFD time unit. 43.The method of claim 41, wherein, the indication information comprises a first indication and a second indication, the first indication being used to indicate the first TCI state, and the second indication being used to indicate the second TCI state.

44. The method of claim 21, wherein, the determining the first TCI state and the determining the second TCI state comprise: obtaining a type and a number of a plurality of TCI states; and determining the first TCI state and the second TCI state based on the type and the number of the plurality of TCI states and a preconfigured correspondence. 45.A communication method applied to a sub-band non-overlapping full-duplex (SBFD) operation, performed at a base station, comprising: sending configuration information, activation information or indication information of TCI states to a user equipment (UE) ; wherein the configuration information, activation information or indication information is used to indicate association of SBFD time units and non-SBFD time units with the TCI states. 46.The method of claim 45, wherein, the SBFD time units and the non-SBFD time units employ different downlink TCI states; or the SBFD time units and the non-SBFD time units employ different uplink TCI states.

47. The method of claim 45, wherein, The configuration information is used to indicate the association relationship between the SBFD time unit, the non-SBFD time unit and the TCI state. 48.The method of claim 47, wherein, The configuration information comprises one or more TCI state parameters, each of which is used to indicate the kind and / or quantity of TCI states in a TCI state group. 49.The method of claim 48, wherein, The TCI state parameter is further used to indicate the association relationship between the TCI states in a TCI state group and the SBFD time unit and the non-SBFD time unit. 50.The method of claim 49, further comprising: sending activation information of the TCI state; wherein the configuration information comprises a plurality of TCI state parameters, and the activation information comprises an indication of selecting one or more from the plurality of TCI state parameters.

51. The method of claim 45, wherein, The activation information is used to indicate the association relationship between the SBFD time unit, the non-SBFD time unit and the TCI state. 52.The method of claim 51, wherein, The activation information is used to indicate a single TCI state in the activated TCI state group, which is associated with the uplink transmission and the downlink transmission of the SBFD time unit, and the uplink transmission and the downlink transmission of the non-SBFD time unit. 53.The method of claim 51, wherein, The activation information comprises a quantity indication, which is used to indicate the quantity of the plurality of TCI states in the activated TCI state group; The activation information further comprises an indication of the association relationship between the plurality of TCI states and the SBFD time unit and the non-SBFD time unit. 54.The method of claim 53, wherein, The plurality of TCI states comprises N TCI states, wherein the N is a predefined integer; or The plurality of TCI states comprises N1 uplink TCI states and N2 downlink TCI states, wherein the N1 and the N2 are predefined integers. 55.The method of claim 51, wherein, The activation information comprises a plurality of TCI state group indications, which are respectively used to indicate whether the activated plurality of TCI state groups comprise downlink TCI states; or The activation information comprises a plurality of TCI state group indications, which are respectively used to indicate whether the activated plurality of TCI state groups comprise uplink TCI states; or The activation information comprises a plurality of TCI state group indications, which are respectively used to indicate the kind and quantity of TCI states in the activated plurality of TCI state groups. 56.The method of claim 55, wherein, The activation information further comprises an indication of the association relationship, which is used to indicate the association relationship between the plurality of TCI states and the SBFD time unit and the non-SBFD time unit. 57.The method of claim 51, wherein, The activation information includes first activation information and second activation information, the first activation information indicates an activated TCI state group associated with the SBFD time unit, and the second activation information indicates an activated TCI state group associated with the non-SBFD time unit.

58. The method of claim 57, further comprising: sending indication information, a TCI area in the indication information simultaneously indicates one TCI state group corresponding to the same code point in the first activation information and the second activation information.

59. The method of claim 57, further comprising; sending indication information, the indication information includes a first TCI area and a second TCI area, the first TCI area indicates one TCI state group in the first activation information, and the second TCI area indicates one TCI state group in the second activation information.

60. The method of claim 59, wherein, the first activation information or a scheduling command of the first activation information is sent on the SBFD time unit, and the second activation information or a scheduling command of the second activation information is sent on the non-SBFD time unit.

61. The method of claim 57, further comprising: sending first indication information and second indication information, the first indication information indicates one TCI state group in a first scheduling command associated with the SBFD time unit, and the second indication information indicates one TCI state group in a second scheduling command associated with the non-SBFD time unit.

62. The method of claim 45, wherein, The indication information is used to indicate the association relationship between the SBFD time unit and the non-SBFD time unit and the TCI state.

63. The method of claim 62, wherein, the indication information includes a selection indication and an association indication, the selection indication is used to select one from the activated multiple TCI state groups, and the association indication is used to determine the association relationship between the selected TCI state group and the SBFD time unit and the non-SBFD time unit.

64. The method of claim 62, wherein, the indication information includes a first indication and a second indication, the first indication is used to indicate the association relationship between the SBFD time unit and the TCI state, and the second indication is used to indicate the association relationship between the non-SBFD time unit and the TCI state.

65. A method for determining uplink power of a connected state applying sub-band non-overlapping full duplex (SBFD) operation, executed on a user equipment (UE), comprising: obtaining an association relationship between multiple transmission configuration indicator (TCI) states and uplink power control parameters; determining an uplink transmission TCI state; and determining the power of uplink transmission of the SBFD time unit and the non-SBFD time unit based on the association relationship between the multiple TCI states and the uplink power control parameters and the uplink transmission TCI state.

66. The method of claim 65, wherein, each of the TCI states contains a path loss reference signal (PL-RS) identification and an identification of a set of uplink power control parameters; ​ The uplink power control parameter set comprises: a first target received power value and a second target received power value, and / or a first closed loop power control index and a second closed loop power control index. The first target received power value and the first closed loop power control index correspond to the SBFD time unit, and the second target received power value and the second closed loop power control index correspond to the non-SBFD time unit.

67. The method of claim 66, wherein, The uplink power control parameter set further comprises: a first path loss compensation factor and a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit.

68. The method of claim 66, wherein, The uplink power control parameter set further comprises: a path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit.

69. The method of claim 66, wherein, The uplink power control parameter set comprises a first uplink power control parameter set and a second uplink power control parameter set, the first uplink power control parameter set corresponding to the SBFD time unit, and the second uplink power control parameter set corresponding to the non-SBFD time unit; The first uplink power control parameter set comprises the first target received power value and the first closed loop power control index; The second uplink power control parameter set comprises the second target received power value and the second closed loop power control index.

70. The method of claim 69, wherein, The first uplink power control parameter set further comprises a path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit; or The first uplink power control parameter set further comprises a first path loss compensation factor, and the second uplink power control set further comprises a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit.

71. The method of claim 65, wherein, The uplink transmission is a sounding reference signal (SRS), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH).

72. A method for determining uplink power in a connected state using sub-band non-overlapped full duplex (SBFD) operation, executed at a base station, comprising: configuring, for a user equipment (UE), an association between a plurality of transmission configuration indicator (TCI) states and uplink power control parameters; the association is used to determine power of uplink transmissions associated with SBFD time units and non-SBFD time units.

73. The method of claim 72, wherein, each of the TCI states contains a path loss reference signal (PL-RS) identification and an identification of an uplink power control parameter set; the uplink power control parameter set comprises: a first target received power value and a second target received power value, and / or a first closed loop power control index and a second closed loop power control index. The first target received power value and the first closed loop power control index correspond to the SBFD time unit, and the second target received power value and the second closed loop power control index correspond to a non-SBFD time unit. 74.The method of claim 73, wherein, The uplink power control parameter set further comprises: a first path loss compensation factor and a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit; or The uplink power control parameter set further comprises: a path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit. 75.The method of claim 73, wherein, The uplink power control parameter set comprises a first uplink power control parameter set and a second uplink power control parameter set, the first uplink power control parameter set corresponding to the SBFD time unit, and the second uplink power control parameter set corresponding to the non-SBFD time unit; The first uplink power control parameter set comprises the first target received power value and the first closed loop power control index; The second uplink power control parameter set comprises the second target received power value and the second closed loop power control index. 76.The method of claim 75, wherein, The first uplink power control parameter set further comprises a path loss compensation factor, the path loss compensation factor corresponding to the SBFD time unit and the non-SBFD time unit; or The first uplink power control parameter set further comprises a first path loss compensation factor, and the second uplink power control set further comprises a second path loss compensation factor, the first path loss compensation factor corresponding to the SBFD time unit, and the second path loss compensation factor corresponding to the non-SBFD time unit.

77. The method of claim 72, wherein, The uplink transmission is a sounding reference signal (SRS), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH). 78.A communication method applied to sub-band non-overlapping full duplex (SBFD) operation, executed on a user equipment (UE), comprising: obtaining a configuration of a first sounding reference signal (SRS) resource set and a second SRS resource set, the first SRS resource set corresponding to a SBFD time unit, and the second SRS resource set corresponding to a non-SBFD time unit; transmitting an SRS to a base station on an SRS resource in the first SRS resource set or the second SRS resource set; receiving indication information of SRS measurement; and transmitting a physical uplink shared channel (PUSCH) according to the indication information. 79.The method of claim 78, wherein, The indication information comprises an SRS resource set indication region, a first sounding reference signal resource indication (SRI) region, a second SRI region, a precoding information and layer number region, and a precoding information region; The first SRI region and the precoding information and layer number region correspond to a first time unit, the first time unit being the SBFD time unit or the non-SBFD time unit; The second SRI region and the precoding information region correspond to a second time unit, which is the non-SBFD time unit or the SBFD time unit accordingly. 80.The method of Claim 79, wherein, the PUSCH transmission is a non-codebook based transmission; the SRS resource set indication region occupies 0 bits; the first SRI region occupies N1 bits, wherein N1 is a positive integer; the second SRI region occupies N1 or N2 bits, wherein N2 is a positive integer smaller than N1; the precoding information and layer number region occupies 0 bits; the precoding information region occupies 0 bits. 81.The method of Claim 80, wherein, the second SRI region occupies N2 bits, and the layer number of the second time unit is determined by the layer number indicated by the first SRI region. 82.The method of Claim 79, wherein, the PUSCH transmission is a codebook based transmission; the SRS resource set indication region occupies 0 bits; the first SRI region occupies M1 bits, wherein M1 is a positive integer; the second SRI region occupies M1 bits; the precoding information and layer number region occupies M2 bits, wherein M2 is a positive integer; the precoding information region occupies M2 or M3 bits, wherein M3 is a positive integer smaller than M2. 83.The method of Claim 82, wherein, the precoding information region occupies M3 bits, and the layer number of the second time unit is determined by the layer number indicated by the precoding information and layer number region. 84.A communication method applied with sub-band non-overlapped full duplex (SBFD) operation, performed at a base station, comprising: configuring a user equipment (UE) with a first sounding reference signal (SRS) resource set and a second SRS resource set, the first SRS resource set corresponding to a SBFD time unit, and the second SRS resource set corresponding to a non-SBFD time unit; receiving an SRS on an SRS resource in the first SRS resource set or the second SRS resource set; sending an indication information of SRS measurement; receiving a physical uplink shared channel (PUSCH) according to the indication information. 85.The method of Claim 84, wherein, the indication information comprises an SRS resource set indication region, a first sounding reference signal resource indication (SRI) region, a second SRI region, a precoding information and layer number region, and a precoding information region; the first SRI region and the precoding information and layer number region correspond to a first time unit, which is the SBFD time unit or the non-SBFD time unit; the second SRI region and the precoding information region correspond to a second time unit, which is the non-SBFD time unit or the SBFD time unit accordingly. 86.The method of Claim 85, wherein, the PUSCH transmission is a non-codebook based transmission; the SRS resource set indication region occupies 0 bits; ​ the first SRI region occupies N1 bits, where N1 is a positive integer; the second SRI region occupies N1 or N2 bits, where N2 is a positive integer smaller than N1; the precoding information and number of layers region occupies 0 bits; the precoding information region occupies 0 bits.

87. The method of claim 86, wherein, the second SRI region occupies N2 bits, and the number of layers of the second time unit is determined by the number of layers indicated by the first SRI region.

88. The method of claim 85, wherein, the PUSCH transmission employs codebook transmission; the SRS resource set indication region occupies 0 bits; the first SRI region occupies M1 bits, where M1 is a positive integer; the second SRI region occupies M1 bits; the precoding information and number of layers region occupies M2 bits, where M2 is a positive integer; the precoding information region occupies M2 or M3 bits, where M3 is a positive integer smaller than M2.

89. The method of claim 88, wherein, the precoding information region occupies M3 bits, and the number of layers of the second time unit is determined by the number of layers indicated by the precoding information and number of layers region.

90. A communications device comprising a processor and a memory, wherein, a memory for storing program instructions, which, when executed by the processor, are used to implement the method described in any one of claims 1 to 89.

91. A computer readable storage medium for storing program instructions, wherein, the program instructions, when executed by the processor, are used to implement the method described in any one of claims 1 to 89.

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