A method, apparatus, device, and storage medium for determining transmission configuration indication status.

Abstract

This disclosure relates to a method, apparatus, device, and storage medium for determining Transmission Configuration Indication (TCI) states, comprising: receiving first information sent by a network device, and determining N TCI states based on the first information, wherein N is a positive integer; receiving second information sent by the network device, and determining M TCI states from the N TCI states based on the second information, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi-co-address information for a terminal to receive Physical Downlink Control Channel (PDCCH). By determining a portion of the TCI states from the multiple TCI states indicated by the first information through the second information, the TCI states used by the terminal for PDCCH and / or PDCCH DMRS transmission and reception are determined in multi-TRP scenarios, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method, apparatus, device and storage medium for determining transmission configuration indication status. Background Technology

[0002] In new radio networks (NR), especially when the communication frequency band is in frequency range 2, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels.

[0003] The beams used for the physical downlink control channel (PDCCH) and / or its demodulation reference signals (DMRS), physical downlink shared channel (PDSCH) and / or its DMRS, physical uplink control channel (PUCCH) and / or its DMRS, physical uplink shared channel (PUSCH) and / or its DMRS, and / or reference signals are all independently indicated. The reference signals may include channel state information reference signals (CSI-RS), sounding reference signals (SRS), positioning reference signals (PRS), tracking reference signals (TRS), etc. For example, CSI-RS may include CSI-RS for channel state information measurement, CSI-RS for beam measurement, or CSI-RS for path loss estimation. SRS can include SRS for codebook-based or non-codebook-based channel state information measurements, SRS for beam measurements, or SRS for positioning measurements.

[0004] Typically, the PDCCH and / or its DMRS, and the PUCCH and / or its DMRS, are activated by the medium access control element (MAC CE) to activate their respective beams. The PDSCH and / or its DMRS, and the PUSCH and / or its DMRS, are indicated by downlink control information (DCI) signaling. The beams can be indicated using TCI status or spatial relation information.

[0005] In some technologies, to reduce signaling overhead, a unified transmission configuration indication (TCI) state has been proposed. The TCI can be used to indicate the TCI state used by the terminal to receive PDCCH and / or the DMRS of PDCCH, PDSCH and / or the DMRS of PDSCH, or to indicate the TCI state used by the terminal to transmit PUCCH and / or the DMRS of PUCCH, PUSCH and / or PUSCH.

[0006] However, currently only a single unified TCI state is considered for a single transmission and receiving point (TRP). That is, only one unified TCI state is configured. When multiple TRPs exist, how to instruct multiple unified TCI states becomes a pressing issue. Summary of the Invention

[0007] To overcome the problems existing in related technologies, this disclosure provides a method, apparatus, device and storage medium for determining transmission configuration indication status.

[0008] According to a first aspect of the present disclosure, a method for determining a Transmission Configuration Indication (TCI) state is provided. The method is applied to a terminal and includes: receiving first information sent by a network device and determining N TCI states based on the first information, wherein N is a positive integer; receiving second information sent by the network device and determining M TCI states from the N TCI states based on the second information, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi-co-address information for the terminal to receive Physical Downlink Control Channel (PDCCH).

[0009] According to a second aspect of the present disclosure, a method for determining a Transmission Configuration Indication (TCI) state is provided. The method is applied to a network device and includes: sending first information to a terminal, the first information being used by the terminal to determine N Transmission Configuration Indication (TCI) states, wherein N is a positive integer; and sending second information to the terminal, the second information being used by the terminal to determine M TCI states out of the N TCI states, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to instruct the terminal to perform quasi-co-address information for receiving Physical Downlink Control Channel (PDCCH).

[0010] According to a third aspect of the present disclosure, a Transmission Configuration Indication (TCI) state determination apparatus is provided. The apparatus is configured in a terminal and includes: a receiving module for receiving first information sent by a network device; a determining module for determining N Transmission Configuration Indication (TCI) states based on the first information, wherein N is a positive integer; the receiving module is further configured to receive second information sent by the network device; and the determining module is configured to determine M TCI states out of the N TCI states based on the second information, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi-co-address information for the terminal to receive Physical Downlink Control Channel (PDCCH).

[0011] According to a fourth aspect of the present disclosure, a Transmission Configuration Indication (TCI) state determination apparatus is provided. The apparatus is configured in a network device and includes: a sending module, configured to send first information to a terminal, the first information being used by the terminal to determine N Transmission Configuration Indication (TCI) states, wherein N is a positive integer; the sending module is further configured to send second information to the terminal, the second information being used by the terminal to determine M TCI states out of the N TCI states, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to instruct the terminal to perform quasi-co-address information for receiving Physical Downlink Control Channel (PDCCH).

[0012] According to a fifth aspect of the present disclosure, a transmission configuration indication state determination device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: execute any one of the methods in the first aspect.

[0013] According to a sixth aspect of the present disclosure, a transmission configuration indication state determination device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: execute any one of the methods in the second aspect.

[0014] According to a seventh aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to perform any of the methods in the first aspect; and the network device is configured to perform any of the methods in the second aspect.

[0015] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed by a processor of a terminal, enable the terminal to perform any of the methods in the first aspect.

[0016] According to a ninth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed by a processor of a network device, enable the network device to perform any of the methods of the second aspect.

[0017] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: by determining at least one TCI state from multiple TCI states indicated by the first information through the second information, it is realized that the TCI state used by the terminal to receive PDCCH and / or PDCCH DMRS in the case of multiple TRP is determined, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0020] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0021] Figure 2 This is a flowchart illustrating a method for determining a transmission configuration indication status according to an exemplary embodiment.

[0022] Figure 3 This is a flowchart illustrating another method for determining a transmission configuration indication state according to an exemplary embodiment.

[0023] Figure 4 This is a flowchart illustrating another method for determining a transmission configuration indication state according to an exemplary embodiment.

[0024] Figure 5 This is a flowchart illustrating another method for determining a transmission configuration indication state according to an exemplary embodiment.

[0025] Figure 6 This is a schematic diagram of a transmission configuration indication status determination device according to an exemplary embodiment.

[0026] Figure 7This is a schematic diagram of another transmission configuration indication state determination device according to an exemplary embodiment.

[0027] Figure 8 This is a schematic diagram of a transmission configuration indication state determination device according to an exemplary embodiment.

[0028] Figure 9 This is a schematic diagram of another transmission configuration indication state determination device according to an exemplary embodiment. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0030] The communication methods disclosed herein can be applied to Figure 1 The wireless communication system 100 shown may include network device 110 and terminal 120. It is understood that... Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0031] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency-Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), and Carrier Sense Multiple Access with Collision Avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G (Generation) networks, 3G networks, 4G networks, or future evolution networks, such as the 5th Generation Wireless Communication System (5G) network. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure sometimes refers to the wireless communication network simply as a network.

[0032] Furthermore, the network device 110 involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a TRP, etc. It can also be a gNB in ​​an NR system, or it can be a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and specific device forms used in the embodiments of this disclosure are not limited.

[0033] Furthermore, the terminal 120 involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0034] In this embodiment, network device 110 and terminal 120 can employ any feasible wireless communication technology to transmit data to each other. The transmission channel corresponding to network device 110 sending data to terminal 120 is called the downlink channel (DL), and the transmission channel corresponding to terminal 120 sending data to network device 110 is called the uplink channel (UL). It is understood that the network device involved in this embodiment can be a base station. Of course, the network device can also be any other possible network device, and the terminal can be any possible terminal; this disclosure does not impose any limitations.

[0035] In NR, especially when the communication frequency band is in frequency range 2, high-frequency channels attenuate quickly, so beam-based transmission and reception are required to ensure coverage.

[0036] In Release (Rel)-16, the beams used by the PDCCH and / or its DMRS, PDSCH and / or its DMRS, PUCCH and / or its DMRS, PUSCH and / or its DMRS, and / or reference signals are all independently indicated. Reference signals may include CSI-RS, SRS, PRS, TRS, etc. For example, CSI-RS may include CSI-RS for channel state information measurement, CSI-RS for beam measurement, or CSI-RS for path loss estimation. SRS may include SRS for codebook-based or non-codebook-based channel state information measurement, SRS for beam measurement, or SRS for location measurement.

[0037] Typically, PDCCH and / or the DMRS of PDCCH, and PUCCH and / or the DMRS of PUCCH, activate a beam via MACCE, while PDSCH and / or the DMRS of PDSCH, and PUSCH and / or the DMRS of PUSCH, indicate their respective beams via DCI signaling.

[0038] To reduce signaling overhead, Rel-17 proposed the use of a unified TCI state. Currently, a unified TCI state can be indicated separately for uplink and downlink, such as a downlink (DL) TCI state and an uplink (UL) TCI state. A unified TCI state can also be a joint uplink / downlink indication, such as a joint TCI state. For example, if a network device indicates a DL TCI state for downlink, this DL TCI state can be used for the terminal's PDSCH and / or PDSCH DMRS, PDCCH and / or PDCCH DMRS, and at least a portion of the CSI-RS. The aforementioned at least a portion of the CSI-RS can be aperiodic CSI-RS. As another example, if a network device indicates a UL TCI state for uplink, this UL TCI state can be used for the terminal's PUSCH and / or PUSCH DMRS, PUCCH and / or PUCCH DMRS, and at least a portion of the SRS. For example, if a network device indicates a jointTCI state, that joint TCI state can be used simultaneously for both uplink and downlink channels and / or reference signals.

[0039] It is understood that TCI can be used to indicate which receive beams the terminal uses when receiving PDCCH and / or PDCCH DMRS, and / or PDSCH and / or PDSCH DMRS. For example, the receive beam that is the same as the synchronization signal block (SSB) or CSI-RS sent by the network device. TCI can also be used to indicate which transmit beams the terminal uses when transmitting PUCCH and / or PUCCH DMRS, and / or PUSCH and / or PUSCH DMRS. For example, the transmit beam that is the same as the SSB or CSI-RS sent by the network device. Here, beam refers to quasi-colocation (QCL) type D.

[0040] The aforementioned beams can be indicated by TCI status or spatialrelation info. Specifically, the TCI status corresponding to the PDCCH includes the TCI status corresponding to the PDCCH and / or the PDCCH DMRS; that is, this TCI status is used for receiving the PDCCH and / or the PDCCH DMRS. Similarly, the TCI state corresponding to PDSCH includes the TCI state corresponding to PDSCH and / or PDSCH DMRS, meaning that the TCI state is used for receiving PDSCH and / or PDSCH DMRS; the TCI state or spatialrelationinfo corresponding to PUCCH includes the TCI state or spatialrelationinfo corresponding to PUCCH and / or PUCCH DMRS, meaning that the TCI state or spatialrelationinfo is used for transmitting PUCCH and / or PUCCH DMRS; the TCI state or spatialrelationinfo corresponding to PUSCH includes the TCI state or spatialrelationinfo corresponding to PUSCH and / or PUSCH DMRS, meaning that the TCI state or spatialrelationinfo is used for transmitting PUSCH and / or PUSCH DMRS.

[0041] However, Rel-17 currently only considers unified TCI states for single-TRP (Transmission for Rectified Beamforming). That is, it only considers configuring one unified TCI state for beam indication. For example, this could include a UL TCI state, a DL TCI state, and / or a joint TCI state. When multi-TRP exists, how to indicate multiple unified TCI states becomes a pressing issue that needs to be addressed.

[0042] In the case of multi-TRP, including single DCI methods, if some channels and / or their DMRS, PDSCH and / or PDSCH DMRS, PUCCH and / or PUCCH DMRS, and PUSCH and / or PUSCH DMRS are configured with multi-TRP, while other channels and / or their DMRS are configured with single-TRP, then when the unified TCI state indicates multiple TCI states, for channels configured with multi-TRP, dynamic switching between multi-TRP and single-TRP may be required. Clearly, how to indicate the association between the PDCCH and multiple unified TCI states is currently undetermined.

[0043] Therefore, this disclosure provides a method, apparatus, device, and storage medium for determining a transmission configuration indication state. By determining at least one TCI state from multiple TCI states indicated by first information using second information, it is possible to determine the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in a multi-TRP scenario, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0044] Figure 2 This is a flowchart illustrating a method for determining a transmission configuration indication state according to an exemplary embodiment. Figure 2 As shown, the method is applied to a terminal and may include the following steps:

[0045] In step S11, the first information sent by the network device is received, and N Transmission Configuration Indicator (TCI) states are determined based on the first information.

[0046] In some embodiments, the terminal may receive first information sent by the network device. The terminal may determine N TCI states based on the received first information. It is understood that the first information may indicate N TCI states, where N is a positive integer.

[0047] In some embodiments, N is a positive integer greater than 1.

[0048] It is understandable that each TCI state can correspond to a TRP.

[0049] In step S12, the second information sent by the network device is received, and M TCI states out of N TCI states are determined based on the second information.

[0050] In some embodiments, the terminal may also receive second information sent by the network device. Based on the received second information, the terminal determines M TCI states from N TCI states. Here, M is a positive integer, and M is less than or equal to N. The M TCI states are used to indicate quasi-co-address information for the terminal to receive PDCCH.

[0051] Among these, quasi-co-address information can be, for example, the QCL assumption.

[0052] In some embodiments, the M TCI states can be used to indicate quasi-co-address information for the terminal to receive the demodulation reference signal (DMRS) of the PDCCH.

[0053] In some embodiments, the M TCI states can be used to indicate quasi-co-address information for PDCCH reception by the terminal, and quasi-co-address information for indicating DMRS reception of PDCCH by the terminal.

[0054] It can be understood that the M TCI states determined by the second information are the TCI states determined from the multiple TCI states indicated by the first information for the terminal to perform DMRS reception of PDCCH and / or PDCCH.

[0055] This disclosure determines at least one TCI state from multiple TCI states indicated by the first information using the second information, thereby enabling the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thus improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0056] In the transmission configuration indication status determination method provided in the embodiments of this disclosure, Figure 3 This is a flowchart illustrating another method for determining a transmission configuration indication state according to an exemplary embodiment. Figure 3 As shown, determining M TCI states out of N TCI states in S12 based on the second information may include the following steps:

[0057] In step S21, in response to the control resource set CORESET associated with PDCCH satisfying the first condition, one of the N TCI states is determined based on the second information.

[0058] In some embodiments, the terminal may determine a TCI state from N TCI states based on second information when the control resource set (CORESET) associated with the PDCCH satisfies a first condition. This can be understood as M being 1 for the M TCI states determined in this embodiment.

[0059] In some embodiments, the first condition may be preset or configured in the communication protocol.

[0060] It is understandable that if the CORESET associated with PDCCH meets the first condition, the terminal does not expect the network device to configure multiple TCI states for the CORESET that meets the first condition, such as two TCI states.

[0061] When the CORESET meets the corresponding conditions, this disclosure determines a TCI state from multiple TCI states indicated by the first information, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0062] In the transmission configuration indication state determination method provided in this embodiment, the control resource set CORESET associated with PDCCH satisfies a first condition, which may include at least one of the following: the CORESET associated with PDCCH is CORESET#0; the CORESET associated with PDCCH is the CORESET packet corresponding to CORESET#0.

[0063] In some embodiments, the CORESET associated with the PDCCH can be CORESET#0.

[0064] CORESET#0 can be considered a special type of CORESET. CORESET#0 represents the number of symbols associated with the resource block and the type 0-PDCCH common searchspace (CSS) set that the terminal obtains from the pdcch-config system information block (SIB) 1 during cell search.

[0065] In some embodiments, a first indication field may be configured in CORESET#0. For example, the first indication field may be "followUnifiedTCIstate". This "followUnifiedTCIstate" can be used to indicate that the TCI state for PDCCH reception is indicated by the unified TCI state. Here, the unified TCI state is the TCI state indicated by the first information. For example, "followUnifiedTCIstate" may be set to enabled.

[0066] In some embodiments, the CORESET associated with PDCCH can be the CORESET group corresponding to CORESET#0.

[0067] For example, the terminal can determine the CORESET group corresponding to CORESET#0 based on other configuration information or default rules.

[0068] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is CORESET#0 or the CORESET group corresponding to CORESET#0. This achieves the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0069] In the transmission configuration indication state determination method provided in this embodiment, the control resource set associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is a first CORESET, the first CORESET is any CORESET other than CORESET#0, the first CORESET is associated with any CSS set other than the type3-PDCCH common search space set CSSset; and the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0070] In some embodiments, the CORESET associated with PDCCH can be a first CORESET. The first CORESET is any CORESET other than CORESET#0. The first CORESET is associated with any CSS set other than the type 3-PDCCH CSS set.

[0071] In some embodiments, a second indication field may be configured in the first CORESET. For example, the second indication field may be "followUnifiedTCIstate". This "followUnifiedTCIstate" can be used to indicate that the TCI state for PDCCH reception is indicated by the unified TCI state. Here, the unified TCI state is the TCI state indicated by the first information. For example, "followUnifiedTCIstate" is set to enabled.

[0072] In some embodiments, the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0073] For example, the terminal can determine the CORESET group corresponding to the first CORESET based on other configuration information or default rules.

[0074] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0075] In the transmission configuration indication state determination method provided in this embodiment, any CSS set other than type 3-PDCCH CSS set includes at least one of the following: type 0-PDCCH CSS set; type 0A-PDCCH CSS set; type 0B-PDCCH CSS set; type 1-PDCCH CSS set; type 1A-PDCCH CSS set; type 2-PDCCH CSS set; type 2A-PDCCH CSS set.

[0076] In some embodiments, any CSS set other than type 3-PDCCH CSS set can be type 0-PDCCH CSS set.

[0077] For example, the type0-PDCCH CSS set can be configured on the primary serving cell of the master cell group (MCG). This can be done through pdcch-ConfigSIB1 in the master information block (MIB), the search space SIB1 in pdcch-Config common, or searchSpaceZero in pdcch-ConfigCommon. It is used for DCI format 1_0, where the cyclic redundancy check (CRC) is scrambled by the system information-radio network temporary identity (SI-RNTI).

[0078] For example, when the searchSpace multicast control channel (MCCH) and searchSpace multicast traffic channel (MTCH) are not provided, searchSpaceZero in pdcch-ConfigCommon is used for DCI format 4_0, and CRC is scrambled by the multicast control channel-radio network temporary identity (MCCH-RNTI) or the group-radio network temporary identity (G-RNTI).

[0079] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 0A-PDCCH CSS set.

[0080] For example, the type0A-PDCCH CSS set is configured for DCI format 1_0 by the searchspace other system information in pdcch-ConfigCommon. CRC can be scrambled by SI-RNTI on the primary cell in the MCG.

[0081] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 0B-PDCCH CSS set.

[0082] For example, the type0B-PDCCH CSS set is configured with searchSpaceMCCH and searchSpaceMCCH in DCI format. The CRC can be scrambled using MCCH-RNTI or G-RNTI on the primary cell in the MCG.

[0083] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 1-PDCCH CSS set.

[0084] For example, the type1-PDCCH CSS set is configured for DCI format 1_0 in pdcch-ConfigCommon by the random access (ra)-SearchSpace. The CRC can be scrambled by the ra-RNTI on the primary cell, the message (Msg) B-RNTI, or the temporary cell (TC)-RNTI in the MCG.

[0085] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 1A-PDCCH CSS set.

[0086] For example, the type1A-PDCCH CSS set is configured in DCI format by the sdt SearchSpace in pdcch-ConfigCommon. The CRC is scrambled by the cell (C)-RNTI or the configuredscheduling (CS)-RNTI on the primary cell.

[0087] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 2-PDCCH CSS set.

[0088] For example, the type2-PDCCH CSS set is paging configured using DCI format 1_0 in pdcch-ConfigCommon. The CRC is scrambled using paging (P)-RNTI on the primary cell within the MCG.

[0089] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 2A-PDCCH CSS set.

[0090] For example, the type2A-PDCCH CSS set is configured for DCI format 2_7 by the peiSearchSpace in the downlink (DL) ConfigCommonSIB. The CRC is scrambled by the PEI-RNTI on the primary cell in the MCG.

[0091] This disclosure provides various CSS sets other than the type 3-PDCCH CSS set, enabling the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unifiedTCI state.

[0092] In the transmission configuration indication status determination method provided in the embodiments of this disclosure, Figure 4 This is a flowchart illustrating yet another method for determining a transmission configuration indication state, according to an exemplary embodiment. Figure 4 As shown, determining M TCI states out of N TCI states in S12 based on the second information may include the following steps:

[0093] In step S31, in response to the PDCCH associated CORESET satisfying the second condition, one or more TCI states among the N TCI states are determined based on the second information.

[0094] In some embodiments, the terminal may determine one or more TCI states from N TCI states based on second information when the CORESET associated with the PDCCH satisfies the second condition. This can be understood as M being 1 or greater than 1 for the M TCI states determined in this embodiment.

[0095] In some embodiments, the second condition may be preset or configured in the communication protocol.

[0096] This disclosure determines one or more TCI states from multiple TCI states indicated by the first information when the CORESET meets the corresponding conditions, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0097] In the transmission configuration indication state determination method provided in this embodiment, the control resource set CORESET associated with PDCCH satisfies a second condition, including at least one of the following: the CORESET associated with PDCCH is a second CORESET, the second CORESET is any CORESET other than CORESET#0, the second CORESET is associated with the terminal search space set USS set and / or type3-PDCCH CSS set; the CORESET associated with PDCCH is the CORESET packet corresponding to the second CORESET.

[0098] In some embodiments, the CORESET associated with PDCCH can be a second CORESET. The second CORESET is any CORESET other than CORESET#0, and the second CORESET is associated with the user equipment-specific search space (USS) set and / or the type3-PDCCH CSS set.

[0099] The type3-PDCCH CSS set is configured, for example, via SearchSpace in pdcch-Config, where searchSpaceType can be the common DCI format. The CRC can be scrambled using interruption (INT)-RNTI, slot format indicator (SFI)-RNTI, transmit power control (TPC)-PUSCH-RNTI, TPC-PRCS-RNTI, or cancellation indicator (CI)-RNTI. When only applicable to the primary cell, the CRC is scrambled using C-RNTI, modulation coding scheme (MCS)-C-RNT1, CS-RNTI, or power saving (PS)-RNTI.

[0100] For example, the type3-PDCCH CSS set is configured using the DCI format in the SearchSpace of pdcch-ConfigMulticast. Here, CRC is scrambled using either G-RNTI or G-CS-RNTI.

[0101] For example, the type3-PDCCH CSS set is configured for DCI format 4_0 through the searchSpaceMCCH and searchSpaceMTCH of the secondary cell. The CRC is scrambled by MCCH-RNTI or G-RNTI.

[0102] This disclosure enables the determination of one or more TCI states from multiple TCI states indicated by the first information in a multi-TRP scenario by using a second CORESET or a CORESET group corresponding to the second CORESET associated with the USS set and / or type3-PDCCH CSS set. This improves the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining one or more TCI states from multiple TCI states indicated by the first information.

[0103] In the transmission configuration indication state determination method provided in this embodiment, in response to determining multiple TCI states among N TCI states based on second information, the quasi-co-address information received by the PDCCH is determined based on the configuration of multiple TCI states.

[0104] In some embodiments, in response to determining multiple TCI states among N TCI states based on the second information, i.e., when the value of M in the determined M TCI states is greater than 1, the quasi-co-address information received by the PDCCH can be determined based on the configuration of multiple TCI states.

[0105] For example, the QCL assumptions for the USS set and / or type3-PDCCH CSS set associated with the second CORESET at the time of terminal reception can both be based on a number of defined TCI states.

[0106] This disclosure determines multiple TCI states from multiple TCI states indicated by the first information, such that quasi-co-address information of the USS set and / or type3-PDCCH CSS set associated with the second CORESET can be determined based on the multiple TCI states, so as to receive the DMRS of the PDCCH and / or PDCCH based on the quasi-co-address information.

[0107] In the transmission configuration indication state determination method provided in this embodiment, the first information includes a media access control unit (MAC CE). The MAC CE is used to indicate N TCI states, and the N TCI states correspond to a code point in the TCI field of the downlink control information (DCI).

[0108] In some embodiments, the first information can be carried by a first MAC CE. This first MAC CE is used to indicate N TCI states. The N TCI states can correspond to a codepoint in a TCI field in the DCI.

[0109] It is understood that a TCI field can correspond to multiple codepoints, and the first MAC CE can indicate N TCI states. In this embodiment, the first MAC CE can indicate N TCI states corresponding to one of the multiple codepoints. These N TCI states are the N TCI states determined by the first information.

[0110] For example, a TCI field can include 3 bits, corresponding to 8 codepoints.

[0111] This disclosure uses MAC CE to indicate N TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0112] In the transmission configuration indication state determination method provided in this embodiment, the first information is carried by the second MAC CE and DCI. The second MAC CE is used to indicate the TCI state corresponding to multiple code points in the TCI field of the DCI. The TCI field in the DCI is used to indicate one of the multiple code points.

[0113] In some embodiments, the first information can be carried by a second MAC CE and a DCI. The second MAC CE is used to indicate the N TCI states corresponding to the multiple codepoints in the TCI field of the DCI. It is understood that the number of N TCI states corresponding to each codepoint can be the same or different. The TCI field in the DCI of the first information is used to indicate one of the multiple codepoints.

[0114] It is understood that in this embodiment, the second MAC CE is used to indicate the multiple TCI states corresponding to the multiple codepoints of the TCI field in the DCI. A codepoint is determined from the multiple codepoints using the DCI in the first information. The N TCI states corresponding to the determined codepoint are then used as the N TCI states determined by the first information.

[0115] This disclosure uses MAC CE and DCI to indicate multiple TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCIstate.

[0116] In the Transmission Configuration Indication State Determination Method provided in this embodiment, the N TCI states determined by the first information are used to determine the quasi-co-address information of at least two of the following: PDCCH and / or DMRS of PDCCH; PDSCH and / or DMRS of PDSCH; PUCCH and / or DMRS of PUCCH; PUSCH and / or DMRS of PUSCH; SRS; CSI-RS.

[0117] In some embodiments, the N TCI states determined by the first information can be used to determine any two or more of the QCL assumptions for PDCCH and / or PDCCH DMRS, PDSCH and / or PDSCH DMRS, PUCCH and / or PUCCH DMRS, PUSCH and / or PUSCH DMRS, SRS, and CSI-RS.

[0118] This disclosure uses N TCI states determined by the first information to determine quasi-co-address information for different channels, DMRS, and reference signals, so as to transmit different channels, DMRS, and / or reference signals based on the quasi-co-address information.

[0119] In the transmission configuration indication status determination method provided in this embodiment, the second information is carried by Radio Resource Control (RRC) signaling and / or a third MAC CE.

[0120] In some embodiments, the second information may be radio resource control (RRC) signaling.

[0121] In some embodiments, the second information may be a third MAC CE.

[0122] It is understandable that the third MAC CE is a different MAC CE from the first MAC CE and the second MAC CE.

[0123] In some embodiments, the second information may be RRC signaling and a third MAC CE.

[0124] This disclosure transmits second information via RRC signaling and / or MAC CE to determine at least one TCI state from multiple TCI states indicated by the first information. This enables the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0125] In the transmission configuration indication state determination method provided in this embodiment, the M TCI states are the TCI states corresponding to CORESET; or, the M TCI states are the TCI states corresponding to CORESET packets.

[0126] In some embodiments, the M TCI states are the TCI states corresponding to CORESET.

[0127] For example, the second information can determine the M TCI states corresponding to each CORESET.

[0128] In some embodiments, the M TCI states are the TCI states corresponding to the CORESET group.

[0129] For example, the second information can determine the M TCI states corresponding to each CORESET group.

[0130] In some embodiments, the terminal may determine the CORESET group corresponding to each CORESET based on other configuration information or default rules.

[0131] This disclosure determines at least one TCI state from multiple TCI states indicated by first information by identifying M TCI states corresponding to different CORESETs or CORESET groups, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRPs.

[0132] In the Transmission Configuration Indication Status Determination Method provided in this embodiment, the TCI status may include at least one of the following: a joint TCI status, which is used to indicate the uplink TCI status and the downlink TCI status; and the downlink TCI status.

[0133] In some embodiments, the TCI state can be a joint TCI state, i.e., an indicated joint TCI state. The indicated joint TCI state can be used to indicate both the uplink TCI state and the downlink TCI state.

[0134] In some embodiments, the TCI state can be a downlink TCI state, i.e., a DL TCI state.

[0135] In some embodiments, the TCI state can be the indicated joint TCI state and / or the DL TCI state.

[0136] This disclosure indicates the TCI state used by the PDCCH by different TCI states, thereby enabling the determination of at least one TCI state from multiple TCI states indicated by the first information, in order to determine the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRP, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0137] Based on the same concept, this disclosure also provides a method for determining the transmission configuration indication status of network devices.

[0138] Figure 5 This is a flowchart illustrating another method for determining a transmission configuration indication state according to an exemplary embodiment. Figure 5 As shown, the method is applied to network devices and may include the following steps:

[0139] In step S41, the first information is sent to the terminal.

[0140] In some embodiments, the network device may send first information to the terminal. The first information is used by the terminal to determine N Transmission Configuration Indicator (TCI) states. It is understood that the first information may indicate N TCI states, where N is a positive integer.

[0141] In some embodiments, N is a positive integer greater than 1.

[0142] It is understandable that each TCI state can correspond to a TRP.

[0143] In step S42, the second information is sent to the terminal.

[0144] In some embodiments, the network device may also send second information to the terminal. The second information is used by the terminal to determine M TCI states out of N TCI states, where M is a positive integer, and M is less than or equal to N. The M TCI states are used to indicate quasi-co-address information for the terminal to receive PDCCH.

[0145] Among these, quasi-co-address information can be, for example, the QCL assumption.

[0146] In some embodiments, the M TCI states can be used to indicate quasi-co-address information for DMRS reception by the terminal.

[0147] In some embodiments, the M TCI states can be used to indicate quasi-co-address information for the terminal to receive PDCCH, and quasi-co-address information for the terminal to receive DMRS in PDCCH.

[0148] It can be understood that the M TCI states determined by the second information are the TCI states determined from the multiple TCI states indicated by the first information, which are used by the terminal to perform DMRS reception of PDCCH and / or PDCCH.

[0149] This disclosure determines at least one TCI state from multiple TCI states indicated by the first information using the second information, thereby enabling the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thus improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0150] In the transmission configuration indication state determination method provided in this embodiment, in response to the control resource set CORESET associated with PDCCH satisfying a first condition, the second information is used by the terminal to determine one of the N TCI states.

[0151] In some embodiments, the network device may determine, in response to the PDCCH-associated CORESET satisfying a first condition, that the second information to be sent is used by the terminal to determine a TCI state from N TCI states. This can be understood as M being 1 for the M TCI states in this embodiment.

[0152] In some embodiments, the first condition may be preset or configured in the communication protocol.

[0153] When the CORESET meets the corresponding conditions, this disclosure determines a TCI state from multiple TCI states indicated by the first information, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0154] In the transmission configuration indication state determination method provided in this embodiment, the control resource set CORESET associated with PDCCH satisfies a first condition, which may include at least one of the following: the CORESET associated with PDCCH is CORESET#0; the CORESET associated with PDCCH is the CORESET packet corresponding to CORESET#0.

[0155] In some embodiments, the CORESET associated with the PDCCH can be CORESET#0.

[0156] CORESET#0 can be considered a special type of CORESET. CORESET#0 represents the number of symbols associated with the type0-PDCCH CSS set that the terminal obtains from pdcch-configSIB1 during cell search.

[0157] In some embodiments, a first indication field may be configured in CORESET#0. For example, the first indication field is "followUnifiedTCIstate". This "followUnifiedTCIstate" can be used to indicate that the TCI state for PDCCH reception is indicated by the unified TCI state. Here, the unified TCI state is the TCI state indicated by the first information. For example, "followUnifiedTCIstate" is set to enabled.

[0158] In some embodiments, the CORESET associated with PDCCH can be the CORESET group corresponding to CORESET#0.

[0159] For example, the terminal can determine the CORESET group corresponding to CORESET#0 based on other configuration information or default rules.

[0160] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is CORESET#0 or the CORESET group corresponding to CORESET#0. This achieves the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0161] In the transmission configuration indication state determination method provided in this embodiment, the control resource set associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is a first CORESET, the first CORESET is any CORESET other than CORESET#0, the first CORESET is associated with any CSS set other than type 3-PDCCH common search space set CSSset; and the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0162] In some embodiments, the CORESET associated with PDCCH can be a first CORESET. The first CORESET is any CORESET other than CORESET#0. The first CORESET is associated with any CSS set other than the type 3-PDCCH CSS set.

[0163] In some embodiments, a second indication field may be configured in the first CORESET. For example, the second indication field may be "followUnifiedTCIstate". This "followUnifiedTCIstate" can be used to indicate that the TCI state for PDCCH reception is indicated by the unified TCI state. Here, the unified TCI state is the TCI state indicated by the first information. For example, "followUnifiedTCIstate" is set to enabled.

[0164] In some embodiments, the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0165] For example, the terminal can determine the CORESET group corresponding to the first CORESET based on other configuration information or default rules.

[0166] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0167] In the transmission configuration indication state determination method provided in this embodiment, any CSS set other than type 3-PDCCH CSS set includes at least one of the following: type 0-PDCCH CSS set; type 0A-PDCCH CSS set; type 0B-PDCCH CSS set; type 1-PDCCH CSS set; type 1A-PDCCH CSS set; type 2-PDCCH CSS set; type 2A-PDCCH CSS set.

[0168] In some embodiments, any CSS set other than type 3-PDCCH CSS set can be type 0-PDCCH CSS set.

[0169] For example, the type0-PDCCH CSS set can be configured on the primary serving cell of the MCG. This can be done via pdcch-ConfigSIB1 in the MIB, searchSpaceSIB1 in pdcch-ConfigCommon, or searchSpaceZero in pdcch-ConfigCommon. This is used for DCI format 1_0, where CRC is scrambled by SI-RNTI.

[0170] For example, when searchSpaceMCCH and searchSpaceMTCH are not provided, searchSpaceZero in pdcch-ConfigCommon is used for DCI format 4_0, and CRC is scrambled by MCCH-RNTI or G-RNTI.

[0171] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 0A-PDCCH CSS set.

[0172] For example, the type0A-PDCCH CSS set is configured for DCI format 1_0 by searchSpaceOtherSystemInformation in pdcch-ConfigCommon. CRC can be scrambled by SI-RNTI on the primary cell in the MCG.

[0173] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 0B-PDCCH CSS set.

[0174] For example, the type0B-PDCCH CSS set is configured with searchSpaceMCCH and searchSpaceMCCH in DCI format. The CRC can be scrambled using MCCH-RNTI or G-RNTI on the primary cell in the MCG.

[0175] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 1-PDCCH CSS set.

[0176] For example, the type1-PDCCH CSS set is configured for DCIformat 1_0 by ra-SearchSpace in pdcch-ConfigCommon. The CRC can be scrambled by ra-RNTI, MsgB-RNTI, or TC-RNTI on the primary cell in the MCG.

[0177] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 1A-PDCCH CSS set.

[0178] For example, the type1A-PDCCH CSS set is configured for DCI format by the sdt SearchSpace in pdcch-ConfigCommon. The CRC is scrambled using either C-RNTI or CS-RNTI on the primary cell.

[0179] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 2-PDCCH CSS set.

[0180] For example, the type2-PDCCH CSS set is paging configured by DCI format 1_0 in pdcch-ConfigCommon. The CRC is scrambled by the P-RNTI on the primary cell in the MCG.

[0181] In some embodiments, any CSS set other than the type 3-PDCCH CSS set can be the type 2A-PDCCH CSS set.

[0182] For example, the type2A-PDCCH CSS set is configured for DCI format 2_7 by peiSearchSpace in DownlinkConfigCommonSIB. The CRC is scrambled by PEI-RNTI on the primary cell in the MCG.

[0183] This disclosure provides various CSS sets other than the type 3-PDCCH CSS set, enabling the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unifiedTCI state.

[0184] In the Transmission Configuration Indication State Determination Method provided in this embodiment, in response to the PDCCH-associated CORESET satisfying a second condition, the second information is used by the terminal to determine one or more TCI states among N TCI states.

[0185] In some embodiments, the network device may determine second information for the terminal to determine one or more TCI states from N TCI states when the CORESET associated with the PDCCH satisfies the second condition. This can be understood as M being 1 or greater than 1 for the M TCI states in this embodiment.

[0186] In some embodiments, the second condition may be preset or configured in the communication protocol.

[0187] This disclosure determines one or more TCI states from multiple TCI states indicated by the first information when the CORESET meets the corresponding conditions, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0188] In the transmission configuration indication state determination method provided in this embodiment, the control resource set CORESET associated with PDCCH satisfies a second condition, including at least one of the following: the CORESET associated with PDCCH is a second CORESET, the second CORESET is any CORESET other than CORESET#0, the second CORESET is associated with the terminal search space set USS set and / or type3-PDCCH CSS set; the CORESET associated with PDCCH is the CORESET packet corresponding to the second CORESET.

[0189] In some embodiments, the CORESET associated with PDCCH can be a second CORESET. The second CORESET is any CORESET other than CORESET#0, and the second CORESET is associated with the USS set and / or the type3-PDCCH CSS set.

[0190] The type3-PDCCH CSS set can be configured via SearchSpace in pdcch-Config, where searchSpaceType can be the common DCI format. The CRC can be scrambled using INT-RNTI, SFI-RNTI, TPC-PUSCH-RNTI, TPC-PRCS-RNTI, or CI-RNTI. When only applicable to the primary cell, the CRC can be scrambled using C-RNTI, MCS-C-RNTI, CS-RNTI, or PS-RNTI.

[0191] For example, the type3-PDCCH CSS set is configured using the DCI format in the SearchSpace of pdcch-ConfigMulticast. Here, CRC is scrambled using either G-RNTI or G-CS-RNTI.

[0192] For example, the type3-PDCCH CSS set is configured for DCI format 4_0 through the searchSpaceMCCH and searchSpaceMTCH of the secondary cell. The CRC is scrambled by MCCH-RNTI or G-RNTI.

[0193] This disclosure enables the determination of one or more TCI states from multiple TCI states indicated by the first information in a multi-TRP scenario by using a second CORESET or a CORESET group corresponding to the second CORESET associated with the USS set and / or type3-PDCCH CSS set. This improves the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining one or more TCI states from multiple TCI states indicated by the first information.

[0194] In the transmission configuration indication state determination method provided in this embodiment, in response to the second information used by the terminal to determine multiple TCI states among N TCI states, the quasi-co-address information received by the PDCCH is determined based on the configuration of multiple TCI states.

[0195] In some embodiments, in response to the terminal determining multiple TCI states among N TCI states based on the second information, i.e., when the value of M in the M TCI states determined by the second information for the terminal is greater than 1, the quasi-co-address information received by the PDCCH can be determined based on the configuration of multiple TCI states.

[0196] For example, the QCL assumptions for the USS set and / or type3-PDCCH CSS set associated with the second CORESET at the time of terminal reception can both be based on a number of defined TCI states.

[0197] This disclosure determines multiple TCI states from multiple TCI states indicated by the first information, such that quasi-co-address information of the USS set and / or type3-PDCCH CSS set associated with the second CORESET can be determined based on the multiple TCI states, so as to receive the DMRS of the PDCCH and / or PDCCH based on the quasi-co-address information.

[0198] In the transmission configuration indication state determination method provided in this embodiment, the first information includes a media access control unit (MAC CE). The MAC CE is used to indicate N TCI states, and the N TCI states correspond to a code point in the TCI field of the downlink control information (DCI).

[0199] In some embodiments, the first information can be carried by a first MAC CE. This first MAC CE is used to indicate N TCI states. The N TCI states can correspond to a codepoint of a TCI field in the DCI.

[0200] It is understood that a TCI field can correspond to multiple codepoints, and the first MAC CE can indicate N TCI states. In this embodiment, the first MAC CE can indicate N TCI states corresponding to one of the multiple codepoints. These N TCI states are the N TCI states determined by the first information.

[0201] For example, a TCI field can include 3 bits, corresponding to 8 codepoints.

[0202] This disclosure uses MAC CE to indicate N TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0203] In the transmission configuration indication state determination method provided in this embodiment, the first information is carried by the second MAC CE and DCI. The second MAC CE is used to indicate the TCI state corresponding to multiple code points in the TCI field of the DCI. The TCI field in the DCI is used to indicate one of the multiple code points.

[0204] In some embodiments, the first information can be carried by a second MAC CE and a DCI. The second MAC CE is used to indicate the N TCI states corresponding to the multiple codepoints in the TCI field of the DCI. It is understood that the number of N TCI states corresponding to each codepoint can be the same or different. The TCI field in the DCI of the first information is used to indicate one of the multiple codepoints.

[0205] It is understood that in this embodiment, the second MAC CE is used to indicate the multiple TCI states corresponding to the multiple codepoints of the TCI field in the DCI. A codepoint is determined from the multiple codepoints using the DCI in the first information. The N TCI states corresponding to the determined codepoint are then used as the N TCI states determined by the first information.

[0206] This disclosure uses MAC CE and DCI to indicate multiple TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCIstate.

[0207] In the Transmission Configuration Indication State Determination Method provided in this embodiment, the N TCI states determined by the first information are used to determine the quasi-co-address information of at least two of the following: PDCCH and / or DMRS of PDCCH; PDSCH and / or DMRS of PDSCH; PUCCH and / or DMRS of PUCCH; PUSCH and / or DMRS of PUSCH; SRS; CSI-RS.

[0208] In some embodiments, the N TCI states determined by the first information can be used to determine the QCL assumptions between any two or more of the following: PDCCH and / or PDCCH DMRS, PDSCH and / or PDSCH DMRS, PUCCH and / or PUCCH DMRS, PUSCH and / or PUSCH DMRS, SRS, and CSI-RS.

[0209] This disclosure uses N TCI states determined by the first information to determine quasi-co-address information for different channels, DMRS, and reference signals, so as to transmit different channels, DMRS, and / or reference signals based on the quasi-co-address information.

[0210] In the transmission configuration indication status determination method provided in this embodiment, the second information is carried by Radio Resource Control (RRC) signaling and / or a third MAC CE.

[0211] In some embodiments, the second information may be RRC signaling.

[0212] In some embodiments, the second information may be a third MAC CE.

[0213] It is understandable that the third MAC CE is a different MAC CE from the first MAC CE and the second MAC CE.

[0214] In some embodiments, the second information may be RRC signaling and a third MAC CE.

[0215] This disclosure transmits second information via RRC signaling and / or MAC CE to determine at least one TCI state from multiple TCI states indicated by the first information. This enables the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0216] In the transmission configuration indication state determination method provided in this embodiment, the M TCI states are the TCI states corresponding to CORESET; or, the M TCI states are the TCI states corresponding to CORESET packets.

[0217] In some embodiments, the M TCI states are the TCI states corresponding to CORESET.

[0218] For example, the second information can determine the M TCI states corresponding to each CORESET.

[0219] In some embodiments, the M TCI states are the TCI states corresponding to the CORESET group.

[0220] For example, the second information can determine the M TCI states corresponding to each CORESET group.

[0221] In some embodiments, the terminal may determine the CORESET group corresponding to each CORESET based on other configuration information or default rules.

[0222] This disclosure determines at least one TCI state from multiple TCI states indicated by first information by identifying M TCI states corresponding to different CORESETs or CORESET groups, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRPs.

[0223] In the Transmission Configuration Indication Status Determination Method provided in this embodiment, the TCI status may include at least one of the following: a joint TCI status, which is used to indicate the uplink TCI status and the downlink TCI status; and the downlink TCI status.

[0224] In some embodiments, the TCI state can be a joint TCI state, i.e., an indicated joint TCI state. The indicated joint TCI state can be used to indicate both the uplink TCI state and the downlink TCI state.

[0225] In some embodiments, the TCI state can be a downlink TCI state, i.e., a DL TCI state.

[0226] In some embodiments, the TCI state can be the indicated joint TCI state and / or the DL TCI state.

[0227] This disclosure indicates the TCI state used by the PDCCH by different TCI states, thereby enabling the determination of at least one TCI state from multiple TCI states indicated by the first information, in order to determine the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRP, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0228] It is understood that the specific implementation process of each embodiment on the network device side can be referred to the terminal side embodiment, and will not be repeated in this disclosure.

[0229] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0230] Based on the same concept, embodiments of this disclosure also provide a transmission configuration indication status determination device or apparatus.

[0231] It is understood that the transmission configuration indication state determination apparatus and device provided in this disclosure, in order to achieve the above-mentioned functions, include hardware structures and / or software modules corresponding to the execution of each function. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0232] Figure 6 This is a schematic diagram of a transmission configuration indication status determination device according to an exemplary embodiment. (Refer to...) Figure 6The device 200 is configured in a terminal and includes: a receiving module 201 for receiving first information sent by a network device; a determining module 202 for determining N Transmission Configuration Indication (TCI) states based on the first information, where N is a positive integer; the receiving module 201 is further configured to receive second information sent by the network device; the determining module 202 is further configured to determine M TCI states out of the N TCI states based on the second information, where M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi-co-address information for the terminal to receive Physical Downlink Control Channel (PDCCH).

[0233] This disclosure determines at least one TCI state from multiple TCI states indicated by the first information using the second information, thereby enabling the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thus improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0234] In one implementation, the determining module 202 is further configured to: determine one of the N TCI states based on second information in response to the control resource set CORESET associated with the PDCCH satisfying a first condition.

[0235] When the CORESET meets the corresponding conditions, this disclosure determines a TCI state from multiple TCI states indicated by the first information, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0236] In one implementation, the control resource set CORESET associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is CORESET#0; the CORESET associated with PDCCH is the CORESET group corresponding to CORESET#0.

[0237] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is CORESET#0 or the CORESET group corresponding to CORESET#0. This achieves the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0238] In one implementation, the control resource set associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is a first CORESET, the first CORESET is any CORESET other than CORESET#0, the first CORESET is associated with any CSS set other than the type 3-PDCCH common search space set CSS set; and the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0239] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0240] In one implementation, any CSS set other than type 3-PDCCH CSS set includes at least one of the following: type 0-PDCCH CSS set; type 0A-PDCCH CSS set; type 0B-PDCCH CSS set; type 1-PDCCH CSS set; type 1A-PDCCH CSS set; type 2-PDCCH CSS set; type 2A-PDCCH CSS set.

[0241] This disclosure provides various CSS sets other than the type 3-PDCCH CSS set, enabling the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unifiedTCI state.

[0242] In one implementation, the determining module 202 is further configured to: in response to the PDCCH associated CORESET satisfying the second condition, determine one or more TCI states among N TCI states based on the second information.

[0243] This disclosure determines one or more TCI states from multiple TCI states indicated by the first information when the CORESET meets the corresponding conditions, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0244] In one implementation, the control resource set CORESET associated with PDCCH satisfies a second condition, including at least one of the following: the CORESET associated with PDCCH is a second CORESET, the second CORESET is any CORESET other than CORESET#0, the second CORESET is associated with the terminal search space set USS set and / or type3-PDCCH CSS set; and the CORESET associated with PDCCH is the CORESET group corresponding to the second CORESET.

[0245] This disclosure enables the determination of one or more TCI states from multiple TCI states indicated by the first information in a multi-TRP scenario by using a second CORESET or a CORESET group corresponding to the second CORESET associated with the USS set and / or type3-PDCCH CSS set. This improves the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining one or more TCI states from multiple TCI states indicated by the first information.

[0246] In one implementation, in response to determining multiple TCI states among N TCI states based on second information, the quasi-co-address information received by the PDCCH is determined based on the configuration of multiple TCI states.

[0247] This disclosure determines multiple TCI states from multiple TCI states indicated by the first information, such that quasi-co-address information of the USS set and / or type3-PDCCH CSS set associated with the second CORESET can be determined based on the multiple TCI states, so as to receive the DMRS of the PDCCH and / or PDCCH based on the quasi-co-address information.

[0248] In one implementation, the first information is carried by a first media access control unit (MAC CE), which is used to indicate N TCI states, and the N TCI states correspond to a code point in the TCI field of the downlink control information (DCI).

[0249] This disclosure uses MAC CE to indicate N TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0250] In one implementation, the first information is carried by a second MAC CE and a DCI. The second MAC CE is used to indicate the TCI status corresponding to multiple code points in the TCI field of the DCI. The TCI field in the DCI is used to indicate one of the multiple code points.

[0251] This disclosure uses MAC CE and DCI to indicate multiple TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCIstate.

[0252] In one implementation, the second information is carried by Radio Resource Control (RRC) signaling and / or a third MAC CE bearer.

[0253] This disclosure transmits second information via RRC signaling and / or MAC CE to determine at least one TCI state from multiple TCI states indicated by the first information. This enables the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0254] In one implementation, the M TCI states are the TCI states corresponding to the CORESET; or, the M TCI states are the TCI states corresponding to the CORESET group.

[0255] This disclosure determines at least one TCI state from multiple TCI states indicated by first information by identifying M TCI states corresponding to different CORESETs or CORESET groups, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRPs.

[0256] In one implementation, the TCI status includes at least one of the following: a combined TCI status, which indicates the uplink TCI status and the downlink TCI status; and a downlink TCI status.

[0257] This disclosure indicates the TCI state used by the PDCCH by different TCI states, thereby enabling the determination of at least one TCI state from multiple TCI states indicated by the first information, in order to determine the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRP, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0258] Figure 7 This is a schematic diagram of another transmission configuration indication state determination device according to an exemplary embodiment. (Refer to...) Figure 7 The device 300 is configured in a network device and includes: a sending module 301, configured to send first information to a terminal, the first information being used by the terminal to determine N Transmission Configuration Indication (TCI) states, where N is a positive integer; the sending module 301 is further configured to send second information to the terminal, the second information being used by the terminal to determine M TCI states out of the N TCI states, where M is a positive integer, M is less than or equal to N, and the M TCI states are used to instruct the terminal to perform quasi-co-address information for receiving Physical Downlink Control Channel (PDCCH).

[0259] This disclosure determines at least one TCI state from multiple TCI states indicated by the first information using the second information, thereby enabling the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thus improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0260] In one implementation, in response to the PDCCH associated control resource set CORESET satisfying a first condition, second information is used by the terminal to determine one of N TCI states.

[0261] When the CORESET meets the corresponding conditions, this disclosure determines a TCI state from multiple TCI states indicated by the first information, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0262] In one implementation, the control resource set CORESET associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is CORESET#0; the CORESET associated with PDCCH is the CORESET group corresponding to CORESET#0.

[0263] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is CORESET#0 or the CORESET group corresponding to CORESET#0. This achieves the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0264] In one implementation, the control resource set associated with PDCCH satisfies a first condition, including at least one of the following: the CORESET associated with PDCCH is a first CORESET, the first CORESET is any CORESET other than CORESET#0, the first CORESET is associated with any CSS set other than the type 3-PDCCH common search space set CSS set; and the CORESET associated with PDCCH is the CORESET group corresponding to the first CORESET.

[0265] This disclosure enables the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0266] In one implementation, any CSS set other than type 3-PDCCH CSS set includes at least one of the following: type 0-PDCCH public search space CSS set; type 0A-PDCCH CSS set; type 0B-PDCCH CSS set; type 1-PDCCH CSS set; type 1A-PDCCH CSS set; type 2-PDCCH CSS set; type 2A-PDCCH CSS set.

[0267] This disclosure provides various CSS sets other than the type 3-PDCCH CSS set, enabling the determination of a TCI state from multiple TCI states indicated by the first information when the CORESET is any CORESET other than CORESET#0 or a CORESET group corresponding to any CORESET other than CORESET#0. This realizes the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unifiedTCI state.

[0268] In one implementation, in response to the PDCCH associated CORESET satisfying a second condition, the second information is used by the terminal to determine one or more TCI states among N TCI states.

[0269] This disclosure determines one or more TCI states from multiple TCI states indicated by the first information when the CORESET meets the corresponding conditions, thereby enabling the determination of the TCI state used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0270] In one implementation, the control resource set CORESET associated with PDCCH satisfies a second condition, including at least one of the following: the CORESET associated with PDCCH is a second CORESET, the second CORESET is any CORESET other than CORESET#0, the second CORESET is associated with the terminal search space set USS set and / or type3-PDCCH CSS set; and the CORESET associated with PDCCH is the CORESET group corresponding to the second CORESET.

[0271] This disclosure enables the determination of one or more TCI states from multiple TCI states indicated by the first information in a multi-TRP scenario by using a second CORESET or a CORESET group corresponding to the second CORESET associated with the USS set and / or type3-PDCCH CSS set. This improves the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining one or more TCI states from multiple TCI states indicated by the first information.

[0272] In one implementation, the response second information is used by the terminal to determine multiple TCI states among N TCI states, and the quasi-co-address information received by the PDCCH is determined based on the configuration of multiple TCI states.

[0273] This disclosure determines multiple TCI states from multiple TCI states indicated by the first information, such that quasi-co-address information of the USS set and / or type3-PDCCH CSS set associated with the second CORESET can be determined based on the multiple TCI states, so as to receive the DMRS of the PDCCH and / or PDCCH based on the quasi-co-address information.

[0274] In one implementation, the first information is carried by a first media access control unit (MAC CE), which is used to indicate N TCI states, and the N TCI states correspond to a code point in the TCI field of the downlink control information (DCI).

[0275] This disclosure uses MAC CE to indicate N TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states indicated by the first information. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0276] In one implementation, the first information is carried by a second MAC CE and a DCI. The second MAC CE is used to indicate the TCI status corresponding to multiple code points in the TCI field of the DCI. The TCI field in the DCI is used to indicate one of the multiple code points.

[0277] This disclosure uses MAC CE and DCI to indicate multiple TCI states corresponding to a code point in the TCI field of DCI, thereby enabling the determination of one or more TCI states from multiple TCI states corresponding to the first information indication. This allows the determination of the TCI states used by the terminal when receiving PDCCH and / or PDCCH DMRS in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCIstate.

[0278] In one implementation, the second information is carried by Radio Resource Control (RRC) signaling and / or a third MAC CE bearer.

[0279] This disclosure transmits second information via RRC signaling and / or MAC CE to determine at least one TCI state from multiple TCI states indicated by the first information. This enables the determination of the TCI state used by the terminal when performing DMRS reception of PDCCH and / or PDCCH in the case of multiple TRPs, thereby improving the reception flexibility of PDCCH and / or PDCCH based on the unified TCI state.

[0280] In one implementation, the M TCI states are the TCI states corresponding to the CORESET; or, the M TCI states are the TCI states corresponding to the CORESET group.

[0281] This disclosure determines at least one TCI state from multiple TCI states indicated by first information by identifying M TCI states corresponding to different CORESETs or CORESET groups, thereby improving the flexibility of receiving PDCCH and / or PDCCH DMRS based on the unified TCI state by determining the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRPs.

[0282] In one implementation, the TCI status includes at least one of the following: a combined TCI status, which indicates the uplink TCI status and the downlink TCI status; and a downlink TCI status.

[0283] This disclosure indicates the TCI state used by the PDCCH by different TCI states, thereby enabling the determination of at least one TCI state from multiple TCI states indicated by the first information, in order to determine the TCI state used by the terminal when performing PDCCH and / or PDCCH DMRS reception in the case of multiple TRP, thereby improving the reception flexibility of PDCCH and / or PDCCH DMRS based on the unified TCI state.

[0284] It should be noted that the various modules / units involved in the apparatus 300 in this disclosure embodiment are merely illustrative and not intended to be limiting. For example, the apparatus 300 in this disclosure embodiment may further include a receiving module and / or a processing module. The modules included in the apparatus 300 can interact with each other and with other network element devices.

[0285] Regarding the devices 200 and 300 in the above embodiments, the specific ways in which each module performs its operation have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0286] Figure 8 This is a schematic diagram illustrating a transmission configuration indication state determination device according to an exemplary embodiment. For example, device 400 can be any terminal such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0287] Reference Figure 8 The device 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0288] Processing component 402 typically controls the overall operation of device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0289] Memory 404 is configured to store various types of data to support the operation of device 400. Examples of this data include instructions for any application or method operating on device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0290] The power supply component 406 provides power to the various components of the device 400. The power supply component 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 400.

[0291] Multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera and / or a rear-facing camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0292] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0293] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0294] Sensor assembly 414 includes one or more sensors for providing status assessments of various aspects of device 400. For example, sensor assembly 414 may detect the on / off state of device 400, the relative positioning of components such as the display and keypad of device 400, changes in the position of device 400 or a component of device 400, the presence or absence of user contact with device 400, the orientation or acceleration / deceleration of device 400, and temperature changes of device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0295] Communication component 416 is configured to facilitate wired or wireless communication between device 400 and other devices. Device 400 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0296] In an exemplary embodiment, device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0297] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of device 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0298] Figure 9 This is a schematic diagram illustrating another transmission configuration indication state determination device according to an exemplary embodiment. For example, device 500 may be provided as a base station or a server. (See also...) Figure 9The device 500 includes a processing component 522, which further includes one or more processors, and memory resources represented by memory 532 for storing instructions executable by the processing component 522, such as application programs. The application programs stored in memory 532 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 522 is configured to execute instructions to perform the methods described above.

[0299] Device 500 may also include a power supply component 526 configured to perform power management of device 500, a wired or wireless network interface 550 configured to connect device 500 to a network, and an input / output (I / O) interface 558. Device 500 can operate on an operating system stored in memory 532, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0300] In one embodiment, for example Figure 1 As shown, this disclosure also provides a communication system, which includes a terminal and a network device. The terminal is used to perform... Figures 2 to 4 Any of the transmission configuration indication status determination methods described herein; network devices are used to execute Figure 5 Any of the transmission configuration indication status determination methods described herein.

[0301] In the case of indicating a unified TCI state for multiple TRPs, when the first information indicates multiple TCI states, a second information is provided for the PDCCH channel to indicate that the PDCCH uses a portion or all of the TCI states indicated by the first information, thereby improving the reception flexibility of PDCCH based on the unified TCI state.

[0302] This disclosure determines the number of TCI states corresponding to various CORESET types in a terminal with a unified TCI state in multi-TRP, thereby improving multi-TRP transmission performance and reducing terminal complexity.

[0303] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0304] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0305] It is further understood that the meaning of words such as “responding to” and “if” used in this disclosure depends on the context and the actual usage scenario. For example, the word “responding to” as used herein can be interpreted as “when” or “if” or “if”.

[0306] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0307] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0308] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for determining a transmission configuration indication status, characterized in that, The method is applied to a terminal and includes: receiving first information sent by a network device, determining N transmission configuration indication (TCI) states based on the first information, wherein N is a positive integer; receiving second information sent by the network device, determining M TCI states from the N TCI states based on the second information, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi co-location information for physical downlink control channel (PDCCH) reception of the terminal; wherein determining the M TCI states from the N TCI states based on the second information comprises: in response to a second condition being met by a CORESET associated with the PDCCH, determining one or more TCI states from the N TCI states based on the second information.

2. The method of claim 1, wherein, The determination of the M TCI states from the N TCI states based on the second information comprises: in response to a first condition being met by a control resource set (CORESET) associated with the PDCCH, determining one TCI state from the N TCI states based on the second information.

3. The method of claim 2, wherein, The first condition being met by the CORESET associated with the PDCCH comprises at least one of: the CORESET associated with the PDCCH is CORESET#0; the CORESET associated with the PDCCH is a CORESET group corresponding to CORESET#0.

4. The method of claim 2, wherein, The first condition being met by the CORESET associated with the PDCCH comprises at least one of: the CORESET associated with the PDCCH is a first CORESET, the first CORESET is any CORESET other than CORESET#0, and the first CORESET is associated with any common search space (CSS) set other than a type 3-PDCCH CSS set; the CORESET associated with the PDCCH is a CORESET group corresponding to the first CORESET.

5. The method of claim 4, wherein, The any CSS set other than the type 3-PDCCH CSS set comprises at least one of: a type0-PDCCH CSS set; a type0A-PDCCH CSS set; a type0B-PDCCH CSS set; a type1-PDCCH CSS set; a type1A-PDCCH CSS set; a type2-PDCCH CSS set; a type2A-PDCCH CSS set.

6. The method of claim 1, wherein, The second condition being met by the CORESET associated with the PDCCH comprises at least one of: the CORESET associated with the PDCCH is a second CORESET, the second CORESET is any CORESET other than CORESET#0, and the second CORESET is associated with a terminal search space (USS) set and / or a type3-PDCCH CSS set; The PDCCH-associated CORESET is a CORESET corresponding to the second CORESET.

7. The method according to claim 1 or 6, characterized in that, In response to determining, based on the second information, that multiple TCI states of the N TCI states, the quasi-co-location information for the PDCCH reception is determined based on configuration of the multiple TCI states.

8. The method according to any one of claims 1 to 7, characterized in that, The first information is carried by a first medium access control element (MAC CE), and the first MAC CE is used to indicate the N TCI states corresponding to one codepoint of a TCI field in a downlink control information (DCI).

9. The method according to any one of claims 1 to 7, characterized in that, The first information is carried by a second MAC CE and a DCI, the second MAC CE is used to indicate TCI states corresponding to multiple codepoints of a TCI field in the DCI, and the TCI field in the DCI is used to indicate one codepoint of the multiple codepoints.

10. The method according to any one of claims 1-9, characterized in that, The second information is carried by radio resource control (RRC) signaling and / or a third MAC CE.

11. The method according to any one of claims 1-10, characterized in that, The M TCI states are TCI states corresponding to CORESETs; or The M TCI states are TCI states corresponding to a CORESET group.

12. The method according to any one of claims 1-11, characterized in that, The TCI state includes at least one of the following: a joint TCI state used to indicate an uplink TCI state and a downlink TCI state; a downlink TCI state.

13. A transmission configuration indication state determination method, comprising: The method is applied to a network device, including: sending first information to a terminal, the first information being used by the terminal to determine N transmission configuration indication (TCI) states, wherein N is a positive integer; sending second information to the terminal, the second information being used by the terminal to determine M TCI states of the N TCI states, wherein M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi-co-location information for physical downlink control channel (PDCCH) reception by the terminal; wherein, in response to a second condition being met by a PDCCH-associated CORESET, the second information is used by the terminal to determine one or more TCI states of the N TCI states.

14. The method of claim 13, wherein, In response to a first condition being met by a PDCCH-associated control resource set (CORESET), the second information is used by the terminal to determine one TCI state of the N TCI states.

15. The method of claim 14, wherein, The PDCCH-associated CORESET meets the first condition, including at least one of the following: The PDCCH-associated CORESET is CORESET#0; The PDCCH-associated CORESET is a CORESET group corresponding to CORESET#0.

16. The method of claim 14, wherein, The PDCCH-associated CORESET meets the first condition, including at least one of the following: The PDCCH-associated CORESET is a first CORESET, the first CORESET is any CORESET other than CORESET#0, and the first CORESET is associated with any control search space (CSS) set other than a type 3-PDCCH common search space (CSS) set. The PDCCH-associated CORESET is a CORESET corresponding to a CORESET group of the first CORESET.

17. The method of claim 16, wherein, The PDCCH-associated CORESET is a CORESET other than the type 3-PDCCH CSS set, including at least one of the following: A type0-PDCCH common search space (CSS) set; A type0A-PDCCH CSS set; A type0B-PDCCH CSS set; A type1-PDCCH CSS set; A type1A-PDCCH CSS set; A type2-PDCCH CSS set; A type2A-PDCCH CSS set.

18. The method of claim 13, wherein, The PDCCH-associated control resource set (CORESET) satisfies a second condition, including at least one of the following: The PDCCH-associated CORESET is a second CORESET, the second CORESET is a CORESET other than CORESET#0, and the second CORESET is associated with a terminal search space set (USS set) and / or a type3-PDCCH CSS set; The PDCCH-associated CORESET is a CORESET corresponding to a CORESET group of the second CORESET.

19. The method of claim 13 or 18, wherein, In response to the second information being used by the terminal to determine multiple TCI states in the N TCI states, the quasi-co-location information for the PDCCH reception is determined based on the multiple TCI states.

20. The method of any of claims 13-19, wherein, The first information is carried by a first medium access control (MAC) control element (CE), and the first MAC CE is used to indicate the N TCI states, which correspond to one code point of a transmission configuration indicator (TCI) field in a downlink control information (DCI).

21. The method of any of claims 13-19, wherein, The first information is carried by a second MAC CE and a DCI, the second MAC CE is used to indicate TCI states corresponding to multiple code points of the TCI field in the DCI, and the TCI field in the DCI is used to indicate one code point in the multiple code points.

22. The method of any of claims 13-21, wherein, The second information is carried by radio resource control (RRC) signaling and / or a third MAC CE.

23. The method of any of claims 13-22, wherein, The M TCI states are TCI states corresponding to CORESETs; or The M TCI states are TCI states corresponding to CORESET groups.

24. The method of any of claims 13-23, wherein, The TCI state includes at least one of the following: A joint TCI state used to indicate an uplink TCI state and a downlink TCI state; A downlink TCI state.

25. A transmission configuration indication state determination device, characterized in that, The apparatus is configured in a terminal, including: A receiving module configured to receive first information sent by a network device; A determining module configured to determine N transmission configuration indicator (TCI) states based on the first information, where N is a positive integer; The receiving module is further configured to receive second information sent by the network device; The determining module is further configured to determine, based on the second information, M TCI states from the N TCI states, where M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi co-location information for PDCCH reception by the terminal. The determining module determines, based on the second information, M TCI states from the N TCI states in the following manner: In response to the CORESET associated with the PDCCH satisfying a second condition, one or more TCI states from the N TCI states are determined based on the second information.

26. A transmission configuration indication state determination device, characterized in that, The apparatus is configured in a network device, and includes: A sending module configured to send, to a terminal, first information used by the terminal to determine N TCI states, where N is a positive integer. The sending module is further configured to send, to the terminal, second information used by the terminal to determine M TCI states from the N TCI states, where M is a positive integer, M is less than or equal to N, and the M TCI states are used to indicate quasi co-location information for PDCCH reception by the terminal. In response to the CORESET associated with the PDCCH satisfying a second condition, the second information is used by the terminal to determine one or more TCI states from the N TCI states.

27. A transmission configuration indication state determination device, comprising: It includes: A processor; A memory for storing processor-executable instructions; The processor is configured to perform the method of any one of claims 1-12.

28. A transmission configuration indication state determination device, comprising: It includes: A processor; A memory for storing processor-executable instructions; The processor is configured to perform the method of any one of claims 13-24.

29. A communication system including a terminal and a network device, wherein The terminal is configured to perform the method of any one of claims 1-12. The network device is configured to perform the method of any one of claims 13-24.

30. A storage medium, characterized by The storage medium has instructions stored therein, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to perform the method of any one of claims 1-12.

31. A storage medium, characterized by The storage medium has instructions stored therein, and when the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to perform the method of any one of claims 13-24.

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