Communication method, apparatus, device and readable storage medium

Abstract

The present disclosure provides a communication method, apparatus, device and readable storage medium. The method includes: receiving first control information carried by a physical downlink control channel PDCCH on a first control resource set CORESET, the first control information including an indication field, the indication field being used to indicate a first transmission configuration indication TCI state and / or a first quasi-co-address QCL; determining at least one channel and / or at least one signal to which the first TCI state is applicable; and / or determining at least one channel and / or at least one signal to which the first QCL is applicable. By determining the first TCI state and / or the first QCL indicated by the indication field corresponding to each channel and the applicable situation corresponding to each signal, the signaling overhead in the TCI state indication process can be reduced while also improving the beam transmission performance.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a communication method, apparatus, device, and readable storage medium. Background Art

[0002] In the New Radio (NR), when the communication frequency band is in FR (Frequency Range) 2, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels.

[0003] In related technologies, both the Physical Downlink Control Channel (PDCCH) and the Physical Uplink Control Channel (PUCCH) use the Medium Access Control Element (MAC CE) to activate their corresponding beams, while the Physical Downlink Shared Channel (PDSCH) and the Physical Uplink Shared Channel (PUSCH) use Downlink Control Information (DCI) to indicate their respective beams for beam transmission.

[0004] However, in the above method, since the beam corresponding to each channel is independently indicated, the configuration signaling overhead for indicating the beam during the beam indication process is too high, and the beam transmission efficiency is low. Summary of the Invention

[0005] The present disclosure provides a communication method, apparatus, device, and readable storage medium that can reduce signaling overhead and improve beam transmission efficiency. The technical solution is as follows:

[0006] According to one aspect of the present disclosure, a communication method is provided, which is performed by a terminal device, and the method includes:

[0007] Receiving first control information carried by a physical downlink control channel PDCCH on a first control resource set CORESET, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication TCI state and / or a first quasi co-location QCL;

[0008] Determine at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable; and / or determine at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable.

[0009] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0010] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0011] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0012] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0013] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0014] In an optional embodiment, the method further includes:

[0015] The terminal receives configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0016] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0017] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0018] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0019] In an optional embodiment, the method further includes:

[0020] Receive configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0021] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0022] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0023] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0024] In an optional embodiment, the method further includes:

[0025] The terminal receives configuration signaling, where the configuration signaling is used to configure the second CORESET to not use a specific TCI state.

[0026] In an optional embodiment, the method further includes:

[0027] The terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0028] In an optional embodiment, the method further includes:

[0029] receiving a second TCI state and / or a second QCL activated by a media access control control element MAC CE for the second CORESET;

[0030] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0031] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0032] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0033] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0034] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0035] In an optional embodiment, the first search space set includes any general search space set;

[0036] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0037] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0038] In an optional embodiment, the method further includes:

[0039] Configuration signaling is received, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0040] In an optional embodiment, the first search space set includes any general search space set;

[0041] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0042] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0043] In an optional embodiment, the method further includes:

[0044] The terminal receives configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0045] In an optional embodiment, the method further includes:

[0046] The terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0047] In an optional embodiment, the method further includes:

[0048] receiving a MAC CE indicating a third TCI state activated by the third CORESET and / or the first search space set; and / or receiving a MAC CE indicating a third QCL activated by the third CORESET and / or the first search space set;

[0049] Determine that the TCI state of the second PDCCH is the same as the third TCI state; and / or, that the QCL of the second PDCCH is the same as the third QCL.

[0050] In an optional embodiment, it is characterized in that

[0051] When the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or

[0052] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0053] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0054] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0055] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0056] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0057] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0058] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0059] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0060] In an optional embodiment, the method further includes:

[0061] receiving RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0062] The at least one channel is not scheduled by downlink control signaling DCI.

[0063] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0064] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0065] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0066] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0067] In an optional embodiment, the method further includes:

[0068] receiving a fourth TCI state and / or a fourth QCL configured by the RRC and / or MAC CE for the at least one channel;

[0069] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0070] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0071] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0072] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0073] In an optional embodiment, the method further includes:

[0074] receiving RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0075] The at least one signal is not scheduled by downlink control signaling DCI.

[0076] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0077] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0078] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0079] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0080] In an optional embodiment, the method further includes:

[0081] receiving a fifth TCI state and / or a fifth QCL configured by the RRC and / or MAC CE for the at least one signal;

[0082] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0083] In another aspect, a communication method is provided, which is performed by an access network device, the method comprising:

[0084] Sending first control information carried by a physical downlink control channel PDCCH to the terminal through a first control resource set CORESET, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication TCI state and / or a first quasi-co-location QCL;

[0085] The indication field is used to indicate at least one channel and / or at least one signal to which the first TCI state is applicable; and / or, the indication field is used to indicate at least one channel and / or at least one signal to which the first QCL is applicable.

[0086] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0087] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0088] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0089] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0090] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0091] In an optional embodiment, the method further includes:

[0092] Sending configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0093] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0094] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0095] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0096] In an optional embodiment, the method further includes:

[0097] Sending configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0098] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0099] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0100] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0101] In an optional embodiment, the method further includes:

[0102] Sending configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0103] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0104] In an optional embodiment, the method further includes:

[0105] Sending a media access control element MAC CE to the terminal, where the MAC CE is used to activate a second TCI state and / or a second QCL for the second CORESET;

[0106] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0107] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0108] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0109] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0110] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0111] In an optional embodiment, the first search space set includes any general search space set;

[0112] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0113] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0114] In an optional embodiment, the method further includes:

[0115] Sending configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0116] In an optional embodiment, the first search space set includes any general search space set;

[0117] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0118] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0119] In an optional embodiment, the method further includes:

[0120] Sending configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0121] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0122] In an optional embodiment, the method further includes:

[0123] Sending a MAC CE to the terminal, where the MAC CE is used to activate a third TCI state for the third CORESET and / or the first search space set; and / or sending a MAC CE to the terminal, where the MAC CE is used to activate a third QCL for the third CORESET and / or the first search space set;

[0124] The TCI state of the second PDCCH is the same as the third TCI state; and / or the QCL of the second PDCCH is the same as the third QCL.

[0125] In an optional embodiment, when the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or,

[0126] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0127] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0128] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0129] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0130] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0131] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0132] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0133] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0134] In an optional embodiment, the method further includes:

[0135] Sending RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0136] The at least one channel is not scheduled by downlink control signaling DCI.

[0137] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0138] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0139] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0140] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0141] In an optional embodiment, the method further includes:

[0142] Sending the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fourth TCI state and / or a fourth QCL for the at least one channel;

[0143] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0144] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0145] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0146] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0147] In an optional embodiment, the method further includes:

[0148] Sending RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0149] The at least one signal is not scheduled by downlink control signaling DCI.

[0150] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0151] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0152] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0153] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0154] In an optional embodiment, the method further includes:

[0155] Sending the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fifth TCI state and / or a fifth QCL for the at least one signal;

[0156] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0157] In another aspect, a communication device is provided, the device comprising:

[0158] a receiving module, configured to receive first control information carried by a physical downlink control channel PDCCH on a first control resource set CORESET, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication TCI state and / or a first quasi-co-location QCL;

[0159] A determination module is used to determine at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable; and / or, to determine at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable.

[0160] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0161] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0162] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0163] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0164] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0165] In an optional embodiment, the receiving module is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0166] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0167] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0168] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0169] In an optional embodiment, the receiving module is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0170] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0171] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0172] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0173] In an optional embodiment, the receiving module is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0174] In an optional embodiment, the terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0175] In an optional embodiment, the receiving module is further configured to receive a second TCI state and / or a second QCL activated by a media access control control element MACCE for the second CORESET;

[0176] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0177] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0178] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0179] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0180] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0181] In an optional embodiment, the first search space set includes any general search space set;

[0182] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0183] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0184] In an optional embodiment, the receiving module is further used to receive configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0185] In an optional embodiment, the first search space set includes any general search space set;

[0186] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0187] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0188] In an optional embodiment, the receiving module is further used to receive configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0189] In an optional embodiment, the terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0190] In an optional embodiment, the receiving module is further configured to receive a third TCI state activated by a MAC CE for the third CORESET and / or the first search space set; and / or receive a third QCL activated by a MAC CE for the third CORESET and / or the first search space set;

[0191] Determine that the TCI state of the second PDCCH is the same as the third TCI state; and / or, that the QCL of the second PDCCH is the same as the third QCL.

[0192] In an optional embodiment, when the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or,

[0193] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0194] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0195] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0196] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0197] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0198] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0199] In an optional embodiment, a search space set and / or a TCI state of a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0200] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0201] In an optional embodiment, the receiving module is further configured to receive RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0202] The at least one channel is not scheduled by downlink control signaling DCI.

[0203] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0204] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0205] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0206] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0207] In an optional embodiment, the receiving module is further configured to receive a fourth TCI state and / or a fourth QCL configured by the RRC and / or MAC CE for the at least one channel;

[0208] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0209] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0210] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0211] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0212] In an optional embodiment, the receiving module is further configured to receive RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0213] The at least one signal is not scheduled by downlink control signaling DCI.

[0214] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0215] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0216] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0217] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0218] In an optional embodiment, the receiving module is further configured to receive a fifth TCI state and / or a fifth QCL configured by the RRC and / or MAC CE for the at least one signal;

[0219] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0220] In another aspect, a communication device is provided, the device comprising:

[0221] a sending module, configured to send first control information carried by a physical downlink control channel (PDCCH) to a terminal through a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication (TCI) state and / or a first quasi-co-location (QCL);

[0222] The indication field is used to indicate at least one channel and / or at least one signal to which the first TCI state is applicable; and / or, the indication field is used to indicate at least one channel and / or at least one signal to which the first QCL is applicable.

[0223] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0224] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0225] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0226] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0227] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0228] In an optional embodiment, the sending module is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0229] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0230] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0231] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0232] In an optional embodiment, the sending module is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0233] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0234] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0235] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0236] In an optional embodiment, the sending module is further configured to send a configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0237] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0238] In an optional embodiment, the sending module is further configured to send a media access control element MAC CE to the terminal, where the MAC CE is used to activate a second TCI state and / or a second QCL for the second CORESET;

[0239] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0240] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0241] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0242] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0243] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0244] In an optional embodiment, the first search space set includes any general search space set;

[0245] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0246] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0247] In an optional embodiment, the sending module is further used to send configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0248] In an optional embodiment, the first search space set includes any general search space set;

[0249] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0250] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0251] In an optional embodiment, the sending module is further used to send configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0252] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0253] In an optional embodiment, the sending module is further configured to send a MAC CE to the terminal, where the MAC CE is used to activate a third TCI state for the third CORESET and / or the first search space set; and / or send a MAC CE to the terminal, where the MAC CE is used to activate a third QCL for the third CORESET and / or the first search space set;

[0254] The TCI state of the second PDCCH is the same as the third TCI state; and / or the QCL of the second PDCCH is the same as the third QCL.

[0255] In an optional embodiment, when the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or,

[0256] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0257] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0258] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0259] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0260] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0261] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0262] In an optional embodiment, a search space set and / or a TCI state of a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0263] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0264] In an optional embodiment, the sending module is further configured to send RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0265] The at least one channel is not scheduled by downlink control signaling DCI.

[0266] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0267] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0268] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0269] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0270] In an optional embodiment, the sending module is further configured to send the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fourth TCI state and / or a fourth QCL for the at least one channel;

[0271] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0272] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0273] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0274] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0275] In an optional embodiment, the sending module is further configured to send RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0276] The at least one signal is not scheduled by downlink control signaling DCI.

[0277] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0278] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0279] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0280] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0281] In an optional embodiment, the sending module is further configured to send the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fifth TCI state and / or a fifth QCL for the at least one signal;

[0282] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0283] In another aspect, a terminal device is provided, the terminal device comprising:

[0284] processor;

[0285] a transceiver connected to the processor;

[0286] The processor is used to load and execute executable instructions to implement the communication method as described in the above-mentioned embodiment of the present disclosure.

[0287] In another aspect, an access network device is provided, the access network device comprising:

[0288] processor;

[0289] a transceiver connected to the processor;

[0290] The processor is used to load and execute executable instructions to implement the communication method as described in the above-mentioned embodiment of the present disclosure.

[0291] On the other hand, a computer-readable storage medium is provided, which stores at least one instruction, at least one program, code set or instruction set, and the above at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement the communication method as described in the above-mentioned embodiment of the present disclosure.

[0292] The beneficial effects of the technical solutions provided by the embodiments of the present disclosure include at least:

[0293] The PDCCH on the first control resource set (CORESET) carries an indication field contained in the first control information. The first TCI state and / or first QCL indicated by the indication field determines the applicability of each channel and each signal, thereby reducing the signaling overhead in the TCI state indication process and improving the beam transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0294] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0295] Figure 1 A block diagram of a communication system provided by an exemplary embodiment of the present disclosure is shown;

[0296] Figure 2 A flow chart of a communication method provided by an exemplary embodiment of the present disclosure is shown;

[0297] Figure 3 is a flow chart of a communication method provided by another exemplary embodiment of the present disclosure;

[0298] Figure 4 is a flow chart of a communication method provided by another exemplary embodiment of the present disclosure;

[0299] Figure 5 is a structural block diagram of a communication device provided by an exemplary embodiment of the present disclosure;

[0300] Figure 6 is a structural block diagram of a communication device provided by another exemplary embodiment of the present disclosure;

[0301] Figure 7 It is a structural block diagram of a communication device shown in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0302] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0303] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, unless otherwise indicated, like numbers in different figures represent like or similar elements. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0304] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0305] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, for example, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0306] Figure 1 A block diagram of a communication system provided by an exemplary embodiment of the present disclosure is shown. The communication system may include: an access network 12 and a terminal device 14.

[0307] The access network 12 includes several access network devices 120. Access network devices 120 may be base stations, which are devices deployed in the access network to provide wireless communication capabilities for terminal devices. Base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and so on. In systems employing different wireless access technologies, the names of devices with base station functionality may vary. For example, in LTE systems, they are called eNodeBs or eNBs; in 5G NR-U systems, they are called gNodeBs or gNBs. As communication technologies evolve, the term "base station" may change. For the convenience of description in the embodiments of this disclosure, the aforementioned devices providing wireless communication capabilities for terminal devices 14 are collectively referred to as access network devices. Access network devices 120 and terminal devices 14 can establish connections over air interfaces, enabling communication through these connections, including signaling and data exchange. There may be multiple access network devices 120, and two adjacent access network devices 120 may communicate with each other via wired or wireless means. Terminal devices 14 can switch between different access network devices 120, i.e., establish connections with different access network devices.

[0308] The terminal device 14 may include various handheld devices with wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile stations (MSs), terminals, and the like. For ease of description, the aforementioned devices are collectively referred to as terminal devices. The access network device 120 and the terminal device 14 communicate with each other via some air interface technology, such as the Uu interface.

[0309] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE-based access to Unlicensed spectrum (LTE-U) system, NR-U system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Network (WLAN) system. Networks, WLAN), Wireless Fidelity (WiFi), next generation communication systems or other communication systems, etc.

[0310] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, and vehicle-to-everything (V2X) systems. The embodiments of the present disclosure can also be applied to these communication systems.

[0311] In new radio (NR) technology, especially when the communication frequency band is in Frequency Range 2, due to the rapid attenuation of high-frequency channels, in order to ensure coverage, it is necessary to use transmission and reception based on TCI status or spatial relationship information (Spatial Relation Info).

[0312] In Rel-16, the TCI status or Spatial Relation Info of the PDCCH, PDSCH, PUSCH, PUCCH, and / or reference signals are independently indicated. Reference signals include the Demodulation Reference Signal (DMRS), Channel State Information Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Positioning Reference Signal (PRS), and Tracking Reference Signal (TRS). CSI-RSs include those used for channel state information measurement, beam management, or path loss estimation. SRSs include those used for codebook-based or non-codebook channel state information measurement, beam management, or positioning measurement. Furthermore, PDCCH and PUCCH use MAC Control Element (MAC CE) to activate a TCI state or SpatialRelationInfo respectively, while PDSCH and PUSCH use DCI signaling to indicate their respective TCI states or SpatialRelationInfo.

[0313] At present, in order to reduce signaling overhead, it is hoped to use a universal TCI state. If the base station indicates a universal TCI state for downlink, then the universal TCI state can be used for the terminal's PDSCH and part of the PDCCH (such as the terminal-specific PDCCH (User Equipment dedicated PDCCH); if the base station indicates a universal TCI state for uplink, then the universal TCI state can be used for the terminal's PUSCH and PUCCH. The universal TCI state may currently be a separate uplink TCI state (Separate Up Link TCI State) and a separate downlink TCI state (Separate DownLink TCI State) separately indicated, or a joint uplink and downlink TCI state (Joint TCI State) jointly indicated, or a unified TCI state (Unified TCI State) indicated. The TCI state includes a quasi co-location (QCL) assumption, and the QCL assumption includes at least one of QCL Type A, QCL Type B, QCL Type C, and QCL Type D. Among them, QCL Type A, QCL Type B and C primarily include at least one of Doppler shift, Doppler spread, average delay, and delay spread. QCL Type D corresponds to spatial reception parameter information. QCL Type D is also commonly referred to as beam information.

[0314] At the current stage, only the unified TCI communication method corresponding to a single transmission and reception point (single-TRP) is considered. When the base station has multiple transmission and reception points (multi-TRP) to serve the terminal, it is necessary to indicate the unified TCI status corresponding to multiple TRPs. Then, when the base station contains multiple TRPs and each TRP sends DCI signaling to schedule its own uplink and downlink resources, how to indicate the unified TCI status corresponding to multiple TRPs to the terminal is a problem that needs to be solved.

[0315] It should be noted that the term "beam" can be understood as a downlink beam and / or an uplink beam. A downlink beam can include at least one of the following: downlink TCI status, Quasi Co-location (QCL), and receive spatial parameters (Rx Spatial Parameters). An uplink beam can include at least one of the following: uplink TCI status, Spatial Relation Info, and Spatial Setting. The beam is indicated by a reference signal ID.

[0316] Based on this, the present disclosure provides a communication method that provides a solution for a terminal to indicate a unified TCI state corresponding to multiple TRPs through the indication field included in the first control information carried by the PDCCH on the first CORESET. Below, the technical solution provided by this application is introduced and explained through several embodiments.

[0317] Please refer to Figure 2 , which shows a flow chart of a communication method provided by an exemplary embodiment of the present application. The method can be applied to Figure 1 The terminal device in the communication system shown in FIG.

[0318] Step 201: Receive first control information carried by a physical downlink control channel PDCCH on a first control resource set CORESET, where the first control information includes an indication field.

[0319] The above indication field is used to indicate the first transmission configuration indication TCI state and / or the first quasi-co-location QCL.

[0320] Optionally, the first QCL includes a first QCL assumption, first QCL parameters, etc., which are not limited in the present embodiment. It is worth noting that the QCLs mentioned in the present embodiment have the same meaning, that is, the QCLs mentioned in the present embodiment include QCL assumptions, QCL parameters, etc., which will not be further described.

[0321] Optionally, the first transmission configuration indicates that the TCI state and / or the first quasi-co-site QCL include three situations: the first TCI state, the first QCL, or at least one of the first TCI state and the first QCL. The three situations corresponding to the first TCI state and / or the first QCL will not be further described in the embodiments of the present application.

[0322] Optionally, the terminal includes one or more CORESETs, and the resources corresponding to each CORESET are the same or different, which is not limited here.

[0323] Illustratively, the first control information carried by the PDCCH may be DCI, or at least one of other control information. In this embodiment, the first control information is illustrated as the first DCI.

[0324] Illustratively, the indication field included in the first control information is the TCI state indication field carried by the first DCI. In this embodiment, the DCI carried by the PDCCH is taken as an example.

[0325] Optionally, the TCI state indication field is used to indicate the first TCI state; or, the TCI state indication field is used to indicate the first QCL; or, the TCI state indication field is used to indicate the first TCI state and the first QCL, which is not limited here.

[0326] Optionally, the first TCI state includes at least one of a unified TCI state, a joint TCI state, a separated uplink TCI state, and a separated downlink TCI state.

[0327] Optionally, the first QCL includes at least one of Type A, Type B, Type C and Type D.

[0328] Step 202: Determine at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable.

[0329] Step 203: Determine at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable.

[0330] It is worth noting that the above-mentioned steps 202 and 203 are two parallel steps, and steps 202 and 203 can be implemented separately or in combination. Schematically, determining at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable; and / or determining at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable includes the following situations: determining at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable; or determining at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable; or determining at least one of the three situations: determining at least one channel and / or at least one signal to which the first TCI state indicated by the indication field and the first QCL are applicable.

[0331] Optionally, the at least one channel includes at least one of PDCCH, PUCCH, PDSCH and PUSCH.

[0332] When the applicable channel is PDCCH, the PDCCH corresponds to a CORESET and / or a search space set.

[0333] Optionally, the search space set corresponding to the PDCCH includes at least one of a user-specific search space set (UE Specific Search Space Set, USS Set) and a common search space set (Common Search Space, CSS Set).

[0334] Optionally, the CSS Set includes at least one type of Type0, Type0-A, Type1, Type2, and Type3.

[0335] Optionally, the at least one signal includes a reference signal, such as at least one of a DMRS, a CSI-RS, an SRS, a PRS or a TRS.

[0336] Optionally, the applicable conditions include: determining whether at least one channel is applicable to the first TCI state according to the control resource set pool index (ControlResource Set Pool Index, CORESETPoolIndex) corresponding to the CORESET; and / or, determining whether at least one channel is applicable to the first QCL according to the control resource set pool index corresponding to the CORESET; or,

[0337] Determine the TCI state applicable to at least one channel and / or at least one signal according to the TCI state of the CORESET of the PDCCH that schedules the at least one channel and / or at least one signal; and / or determine the QCL applicable to at least one channel and / or at least one signal according to the TCI state of the CORESET of the PDCCH that schedules the at least one channel and / or at least one signal; or

[0338] The TCI state and / or QCL applicable to at least one channel and / or at least one signal is determined according to the configuration signaling received by the terminal, which is not limited.

[0339] In the embodiment of the present disclosure, description is given by taking an example where the at least one applicable channel includes a first PDCCH and the first PDCCH corresponds to a second CORESET.

[0340] First, the second CORESET includes a specific user search space set and / or a Type 3 general search space set.

[0341] In some embodiments, the first CORESET and the second CORESET correspond to the same control resource set pool number; the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0342] The TCI state of the first PDCCH is the same as the first TCI state, which can also be called assuming that the TCI state of the DMRS of the first PDCCH is the same as the first TCI state.

[0343] The QCL of the first PDCCH is the same as the first QCL, which can also be called assuming that the QCL of the DMRS of the first PDCCH is the same as the first QCL.

[0344] In the present disclosure, the second CORESET only includes a specific user search space set and / or a general search space set corresponding to type 3, and does not include other types of general search space sets.

[0345] In the present disclosure, one CORESET corresponds to one control resource pool sequence number. When neither the first CORESET nor the second CORESET is configured with a control resource pool sequence number, it is considered that the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or, when the control resource pool sequence numbers configured for the first CORESET and the second CORESET are both 0 or both 1, it is considered that the first CORESET and the second CORESET correspond to the same control resource pool sequence number. This disclosure does not limit this.

[0346] That is, when the first CORESET and the second CORESET are not configured with a control resource set pool serial number, the first CORESET and the second CORESET correspond to the same control resource set pool serial number; or, the control resource set pool serial numbers configured for the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number; or, the control resource set pool serial numbers configured for the first CORESET and the second CORESET are both the second value, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0347] It is worth noting that the above-mentioned method for determining whether the control resource pool serial numbers are the same is also applicable in subsequent embodiments, and the method for determining the control resource pool serial numbers will not be described in subsequent embodiments.

[0348] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, it is considered that the TCI state of the first PDCCH corresponding to the second CORESET is the same as the first TCI state, and / or the QCL of the first PDCCH corresponding to the second CORESET is the same as the first QCL. Among them, the TCI state of the first PDCCH corresponding to the second CORESET is the same as the first TCI state, and / or the QCL of the first PDCCH is the same as the first QCL, which includes three situations: 1. The TCI state of the first PDCCH is the same as the first TCI state; 2. The QCL of the first PDCCH is the same as the first QCL; 3. The TCI state of the first PDCCH is the same as the first TCI state, and the QCL of the first PDCCH is the same as the first QCL.

[0349] This will not be described in detail in the subsequent embodiments.

[0350] Second, the second CORESET includes any universal search space set.

[0351] In the present disclosure, the second CORESET only includes universal search space sets other than Type 3, or only includes universal search space sets corresponding to any type, that is, the second CORESET does not include a specific user search space set.

[0352] In some embodiments, the first CORESET and the second CORESET correspond to the same control resource set pool number.

[0353] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0354] In the present disclosure, when the first CORESET and the second CORESET correspond to the same control resource set pool number, the first PDCCH applies to the first TCI state, and / or the first PDCCH applies to the first QCL.

[0355] In some embodiments, the terminal receives configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0356] In the present disclosure, when the first CORESET and the second CORESET correspond to the same control resource set pool number, the terminal receives configuration signaling, which is used to configure the second CORESET to use a specific TCI state, then the first PDCCH applies to the first TCI state, and / or the first PDCCH applies to the first QCL.

[0357] Indicatively, when the first CORESET and the second CORESET correspond to the same control resource set pool number, and the terminal receives the configuration signaling to configure the indication information useIndicatedTCIState for the second CORESET (corresponding to the specific TCI state configured in the above configuration signaling), and enables the useIndicatedTCIState, then the first PDCCH applies to the first TCI state, and / or the first PDCCH applies to the first QCL.

[0358] Optionally, the configuration signaling may be implemented as at least one of DCI signaling, MAC CE signaling, and RCC signaling.

[0359] Illustratively, the specific TCI state refers to the Rel-17 TCI state indicated by the first DCI, that is, the unified TCI state, including at least one of the combined TCI state, the separated uplink TCI state, and the separated downlink TCI state. This characteristic TCI state will not be described in detail later.

[0360] Third, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET, namely CORESET#0.

[0361] In the present disclosure, the general search space set may be implemented as a general search space set corresponding to any type except Type 3, or a general search space set corresponding to any type, without limitation.

[0362] Optionally, the TCI state corresponding to the first PDCCH is the same as or different from the first TCI state; and / or the QCL corresponding to the first PDCCH is the same as or different from the first QCL. There are mainly two types of situations: the first type corresponds to the same situation (including the TCI state being the same as the first TCI state, and / or the QCL being the same as the first QCL), and the second type corresponds to the different situation (including the TCI state being different from the first TCI state, and / or the QCL being different from the first QCL).

[0363] 1. First, the following situations are described separately, that is, the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL:

[0364] (1) The first CORESET and the second CORESET correspond to the same control resource set pool number.

[0365] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, the first PDCCH applies to the first TCI state; and / or,

[0366] When the control resource set pool numbers corresponding to the first CORESET and the second CORESET are the same, the first PDCCH applies to the first QCL.

[0367] (2) The first CORESET and the second CORESET correspond to the same control resource set pool number; and receive configuration signaling, which is used to configure the second CORESET to use a specific TCI state.

[0368] Optionally, the control resource set pool sequence number corresponding to the first CORESET and the second CORESET is the same, and the terminal receives configuration signaling, which is used to configure the second CORESET to use a specific TCI state;

[0369] Then, the TCI state corresponding to the first PDCCH is the same as the first TCI state, and / or the QCL of the first PDCCH is the same as the first QCL.

[0370] 2. Secondly, different situations are described separately, that is, the TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL, including the following situations:

[0371] (3) The first CORESET and the second CORESET correspond to the same control resource set pool number; and the terminal receives configuration signaling, which is used to configure the second CORESET not to use a specific TCI state.

[0372] Optionally, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, and the terminal receives configuration signaling, the configuration signaling is used to instruct the second CORESET not to use a specific TCI state.

[0373] Then, the first PDCCH is not applicable to the first TCI state, and / or the first PDCCH is not applicable to the first QCL being different.

[0374] (4) The first CORESET and the second CORESET correspond to the same control resource set pool number; the terminal does not receive the configuration signaling, which is used to determine whether the second CORESET uses the configuration signaling of a specific TCI state.

[0375] Optionally, when the control resource set pool sequence number corresponding to the first CORESET and the second CORESET is the same, and the terminal does not receive configuration signaling, it is impossible to determine whether the second CORESET can use a specific TCI state. Therefore, the first PDCCH is not applicable to the first TCI state and / or the first PDCCH is not applicable to the first QCL.

[0376] In the present disclosure, when the TCI state corresponding to the first PDCCH is different from the first TCI state, and / or the QCL corresponding to the first PDCCH is different from the first QCL:

[0377] Activate the second TCI state for the second CORESET through MAC CE signaling; and / or activate the second QCL for the second CORESET through MAC CE signaling. In this case, the TCI state corresponding to the first PDCCH is the second TCI state, and / or the QCL corresponding to the first PDCCH is the second QCL.

[0378] That is, the received MAC CE is the second TCI state activated by the second CORESET; and / or the received MAC CE is the second QCL activated by the second CORESET.

[0379] In this disclosure, the initial CORESET is implemented as CORESET#0, which is always associated with a CSS set of Type#0. When the second CORESET is CORESET#0, the implementation is the same as above and will not be repeated here.

[0380] In the embodiment of the present disclosure, description is given by taking an example where at least one applicable channel includes a second PDCCH, and the second PDCCH corresponds to a first search space set and a third CORESET.

[0381] In the present disclosure, whether the second PDCCH is applicable to the first TCI state, and / or whether the second PDCCH is applicable to the first QCL situation, is determined according to at least one of the first search space set and the third CORESET.

[0382] In the present disclosure, the first search space set may be implemented as at least one of a specific user search space set and a universal search space set.

[0383] First, the first search space set includes a specific user search space set and / or a type 3 general search space set.

[0384] In some embodiments, the first CORESET and the third CORESET correspond to the same control resource set pool number;

[0385] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0386] In the present disclosure, the first search space set is implemented to include only the specific user search space set and / or the general search space set corresponding to type 3, and does not include other types of general search space sets. In the present disclosure, type 3 is implemented as Type 3.

[0387] In the present disclosure, when the control resource pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, it is considered that the TCI state of the third PDCCH applies to the first TCI state; and / or; the QCL of the third PDCCH applies to the first QCL. The rules for determining whether the control resource pool sequence numbers corresponding to the first CORESET and the third CORESET are the same are the same as the rules for determining whether the control resource pool sequence numbers corresponding to the first CORESET and the second CORESET are the same.

[0388] That is, when the first CORESET and the third CORESET are not configured with a control resource pool serial number, the first CORESET and the third CORESET correspond to the same control resource pool serial number; or, the control resource pool serial numbers configured for the first CORESET and the third CORESET are both the first value, and the first CORESET and the third CORESET correspond to the same control resource pool serial number; or, the control resource pool serial numbers configured for the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource pool serial number.

[0389] Second, the first search space set includes any general search space set, or the first search space set includes an initial search space set.

[0390] In the present disclosure, the first search space set is implemented as a general search space set other than Type 3, or as a search space set corresponding to any type.

[0391] 1. First, the following situations are described separately, that is, the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL:

[0392] (1) The first CORESET and the third CORESET correspond to the same control resource set pool number.

[0393] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, it is considered that the second PDCCH is applicable to the first TCI state, and / or the second PDCCH is applicable to the first QCL.

[0394] (2) The first CORESET and the third CORESET correspond to the same control resource set pool number; and configuration signaling is received, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0395] In the present disclosure, the control resource set pool sequence number corresponding to the first CORESET and the third CORESET is the same, and the terminal receives configuration signaling, which is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0396] Then, the TCI state corresponding to the second PDCCH is the same as the first TCI state, and / or the QCL of the second PDCCH is the same as the first QCL.

[0397] 2. Secondly, different situations are described separately, that is, the TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL, including the following situations:

[0398] (3) The first CORESET and the third CORESET correspond to the same control resource set pool number; the terminal receives configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0399] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, and the terminal receives configuration signaling, the configuration signaling is used to configure the third CORESET and / or the first search space set not to use a specific TCI state.

[0400] Then, the TCI state corresponding to the second PDCCH is not applicable to the first TCI state, and / or the QCL of the second PDCCH is not applicable and is different from the first QCL.

[0401] (4) The first CORESET and the third CORESET correspond to the same control resource set pool number; the terminal does not receive the configuration signaling, which is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0402] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, when the terminal receives the configuration signaling, when the terminal does not receive the configuration signaling, it is impossible to determine whether the third CORESET and / or the first search space set can use a specific TCI state, then it is considered that the TCI state corresponding to the second PDCCH is not applicable to the first TCI state, and / or the QCL of the second PDCCH is not applicable to the first QCL and is different.

[0403] In the present disclosure, when the TCI state corresponding to the second PDCCH is different from the first TCI state, and / or the QCL corresponding to the second PDCCH is different from the first QCL:

[0404] Activate a third TCI state for the third CORESET and / or the first search space set through MAC CE signaling; and / or activate a third QCL for the third CORESET and / or the first search space set through MAC CE signaling. In this case, the TCI state corresponding to the second PDCCH is the third TCI state, and / or the QCL corresponding to the second PDCCH is the third QCL.

[0405] That is, the received MAC CE is the third TCI state activated by the third CORESET and / or the first search space set; and / or, the received MAC CE is the third QCL activated by the third CORESET and / or the first search space set.

[0406] In the present disclosure, the initial search space set is implemented as SS Set #0, which corresponds to the CSS set of Type #0. When the first search space set is implemented as SS Set #0, its applicable method is the same as above and will not be repeated here.

[0407] In the embodiment of the present disclosure, description is given by taking as an example that at least one applicable channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0408] In the present disclosure, the PUSCH includes at least one of a dynamically granted (Dynamic-grant) PUSCH and a configured-grant (Configue-grant) PUSCH.

[0409] The first is the case where at least one channel is scheduled.

[0410] In some embodiments, a search space set and / or a TCI state of a CORESET corresponding to a PDCCH for scheduling at least one channel is the same as a first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to a PDCCH for scheduling at least one channel is the same as the first QCL;

[0411] The TCI state of at least one channel is the same as the first TCI state; and / or the QCL of at least one channel is the same as the first QCL.

[0412] In the present disclosure, the PDCCH may be used to schedule at least one of the PDSCH, PUCCH, and PUSCH.

[0413] In the present disclosure, when the TCL state corresponding to the CORESET and / or search space set corresponding to the PDCCH used for scheduling is the same as the first TCI state; and / or when the QCL corresponding to the CORESET and / or search space set corresponding to the PDCCH used for scheduling is the same as the first QCL, it means that the TCI state corresponding to the channel scheduled by the PDCCH is the first TCI state; and / or the QCL corresponding to the channel scheduled by the PDCCH is the first QCL.

[0414] It should be noted that the TCI state corresponding to a channel is the first TCI state; and / or; the QCL corresponding to a channel is the first QCL, which can also be called the TCI state corresponding to the DMRS of a channel is the first TCI state; and / or; the QCL corresponding to the DMRS of a channel is the first QCL.

[0415] The second is the case where at least one channel is not scheduled.

[0416] In some embodiments, radio resource control (RRC) and / or media access control element (MAC CE) configuration information is received, where the configuration information is used to indicate whether at least one channel uses a specific TCI state, wherein at least one channel is not scheduled by downlink control signaling DCI.

[0417] In the present disclosure, there is also a situation where at least one channel is not scheduled by DCI signaling. When it is not scheduled by DCI signaling, at least one channel is configured through RRC signaling or MAC CE signaling, wherein the channel is configured to use the TCI state indicated by the DCI of the CORESET corresponding to which control resource set pool number the channel is specifically used.

[0418] 1. The case where at least one channel uses a specific TCI state.

[0419] In the present disclosure, RRC and / or MAC CE configuration information is used to indicate that at least one channel uses a specific TCI state; the TCI state of at least one channel is the same as the first TCI state; and / or the QCL of at least one channel is the same as the first QCL.

[0420] In the present disclosure, at least one channel is configured through RRC signaling and / or MAC CE signaling so that the channel uses a specific TCI state, which indicates that the TCI state corresponding to the channel is the first TCI state, and / or the QCL corresponding to the channel is the first QCL.

[0421] 2. The case where at least one channel does not use a specific TCI state.

[0422] In some embodiments, RRC and / or MAC CE configuration information is used to indicate that at least one channel does not use a specific TCI state; the TCI state of at least one channel is different from the first TCI state; and / or the QCL of at least one channel is different from the first QCL.

[0423] In the present disclosure, when at least one channel does not use a specific TCI state, it indicates that the TCI state of the at least one channel is not applicable to the first TCI state; and / or; the QCL of the at least one channel is not applicable to the first QCL.

[0424] In some embodiments, a fourth TCI state configured by RRC and / or MAC CE for at least one channel is received; and / or a fourth QCL configured by RRC and / or MAC CE for at least one channel is received.

[0425] The TCI state of at least one channel is the same as the fourth TCI state; and / or the QCL of at least one channel is the same as the fourth QCL.

[0426] In the present disclosure, the fourth TCI state is configured for the channel through RRC and / or MAC CE and / or DCI; and / or, the fourth QCL is configured for the channel through RRC and / or MAC CE and / or DCI, that is, the TCI state of the channel is the fourth TCI state, and / or, the QCL of the channel is the fourth QCL.

[0427] In the embodiment of the present disclosure, description is given by taking as an example that the at least one applicable signal includes at least one of a channel state information reference signal DMRS, a CSI-RS, and a sounding reference signal SRS.

[0428] Optionally, the CSI-RS includes at least one of a CSI-RS for CSI measurement or a non-periodic CSI-RS for beam management measurement.

[0429] Optionally, the SRS includes at least one of a non-periodic SRS and an SRS for beam management.

[0430] The first is the case where at least one signal needs to be scheduled.

[0431] In some embodiments, the search space set and / or TCI state of the CORESET corresponding to the PDCCH used to schedule at least one signal is the same as the first TCI state; and / or, the QCL of the search space set and / or CORESET corresponding to the PDCCH used to schedule at least one signal is the same as the first QCL; the TCI state of at least one signal is the same as the first TCI state; and / or, the QCL of at least one signal is the same as the first QCL.

[0432] In the present disclosure, the PDCCH may be used to schedule at least one of the CSI-RS and the SRS.

[0433] In the present disclosure, when the TCL state corresponding to the CORESET and / or the search space set corresponding to the PDCCH used for scheduling is the same as the first TCI state; and / or; when the QCL corresponding to the CORESET and / or the search space set corresponding to the PDCCH used for scheduling is the same as the first QCL.

[0434] It indicates that the TCI state corresponding to the signal scheduled by the PDCCH is the first TCI state; and / or; the QCL corresponding to the signal scheduled by the PDCCH is the first QCL.

[0435] It should be noted that the TCI state corresponding to a signal is the first TCI state; and / or; the QCL corresponding to a signal is the first QCL, which can also be called the TCI state corresponding to the DMRS of a signal is the first TCI state; and / or; the QCL corresponding to the DMRS of a signal is the first QCL.

[0436] The second is the case where at least one signal is not scheduled.

[0437] In some embodiments, RRC and / or media access control element MAC CE configuration information is received, where the configuration information is used to indicate whether at least one signal uses a specific TCI state, wherein the at least one signal is not scheduled by downlink control signaling DCI.

[0438] In the present disclosure, there is also a situation where at least one signal is not scheduled by DCI signaling. When it is not scheduled by DCI signaling, at least one signal is configured through RRC signaling or MAC CE signaling, wherein the signal is configured to use the TCI state indicated by the DCI of the CORESET corresponding to which control resource set pool number.

[0439] 1. When at least one signal uses a specific TCI state.

[0440] In the present disclosure, RRC and / or MAC CE configuration information is used to indicate that at least one signal uses a specific TCI state; the TCI state of at least one signal is the same as the first TCI state; and / or the QCL of at least one signal is the same as the first QCL.

[0441] In the present disclosure, at least one signal is configured through RRC signaling and / or MAC CE signaling so that the signal uses a specific TCI state, which indicates that the TCI state corresponding to the signal is the first TCI state, and / or the QCL corresponding to the signal is the first QCL.

[0442] 2. The case where at least one signal does not use a specific TCI state.

[0443] In some embodiments, the RRC and / or MAC CE configuration information is used to indicate that at least one signal does not use a specific TCI state; the TCI state of at least one signal is different from the first TCI state; and / or the QCL of at least one signal is different from the first QCL.

[0444] In the present disclosure, when at least one signal does not use a specific TCI state, it indicates that the TCI state of the at least one signal is not applicable to the first TCI state; and / or; the QCL of the at least one signal is not applicable to the first QCL.

[0445] In some embodiments, a fifth TCI state configured by RRC and / or MAC CE for at least one signal is received; and / or a fifth QCL configured by RRC and / or MAC CE for at least one signal is received.

[0446] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0447] In the present disclosure, the fifth TCI state is configured for the signal through RRC and / or MAC CE and / or DCI; and / or, the fifth QCL is configured for the signal through RRC and / or MAC CE and / or DCI, that is, the TCI state of the signal is the fifth TCI state, and / or, the QCL of the signal is the fifth QCL.

[0448] To sum up, the communication method provided by the present invention receives the indication field contained in the first control information carried by the PDCCH on the first control resource set (Control Resource Set, CORESET), and determines the first TCI state and / or the first QCL indicated by the indication field corresponding to each channel and the applicability of each signal, thereby reducing the signaling overhead in the TCI state indication process and improving the beam transmission performance.

[0449] Indicative, Figure 3 is a flow chart of a communication method provided by another exemplary embodiment of the present disclosure, wherein the method is Figure 1 The access network device is executed as an example, Figure 3 As shown, the method includes:

[0450] Step 301: First control information carried in a physical downlink control channel PDCCH is sent to a terminal via a first control resource set CORESET.

[0451] The first control information includes an indication field, which is used to indicate a first transmission configuration indication TCI state and / or a first quasi-co-located QCL. Optionally, the indication field is used to indicate at least one channel and / or at least one signal to which the first TCI state applies; and / or the indication field is used to indicate at least one channel and / or at least one signal to which the first QCL applies.

[0452] Optionally, the access network device includes one or more TRPs, each TRP corresponds to a CORESET, and the CORESETPoolIndex corresponding to each CORESET is the same or identical, which is not limited.

[0453] Optionally, the first control information carried by the PDCCH sent to the terminal may be DCI, or other control information, which is not limited.

[0454] Schematically, the indication field included in the first control information is the TCI status indication field carried by the first DCI. The beam is used to transmit PDSCH and / or PDCCH. In this embodiment, the DCI carried by PDCCH is used as an example.

[0455] Optionally, the at least one channel includes at least one of PDCCH, PUCCH, PDSCH and PUSCH.

[0456] Optionally, the at least one signal includes a reference signal, such as at least one of a DMRS, a CSI-RS, an SRS, a PRS or a TRS.

[0457] In the embodiment of the present disclosure, description is given by taking an example where at least one applicable channel includes a first PDCCH and the first PDCCH corresponds to a second CORESET.

[0458] First, the second CORESET includes a specific user search space set and / or a Type 3 general search space set.

[0459] In some embodiments, the first CORESET and the second CORESET correspond to the same control resource set pool number; the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0460] The TCI state of the first PDCCH is the same as the first TCI state, which can also be called assuming that the TCI state of the DMRS of the first PDCCH is the same as the first TCI state.

[0461] The QCL of the first PDCCH is the same as the first QCL, which can also be called assuming that the QCL of the DMRS of the first PDCCH is the same as the first QCL.

[0462] In the present disclosure, the second CORESET only includes a specific user search space set and / or a general search space set corresponding to type 3, and does not include other types of general search space sets.

[0463] In the present disclosure, one CORESET corresponds to one control resource pool sequence number. When neither the first CORESET nor the second CORESET is configured with a control resource pool sequence number, it is considered that the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or, when the control resource pool sequence numbers configured for the first CORESET and the second CORESET are both 0 or both 1, it is considered that the first CORESET and the second CORESET correspond to the same control resource pool sequence number. This disclosure does not limit this.

[0464] That is, when the first CORESET and the second CORESET are not configured with a control resource set pool serial number, the first CORESET and the second CORESET correspond to the same control resource set pool serial number; or, the control resource set pool serial numbers configured for the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number; or, the control resource set pool serial numbers configured for the first CORESET and the second CORESET are both the second value, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0465] It is worth noting that the above-mentioned method for determining whether the control resource pool serial numbers are the same is also applicable in subsequent embodiments, and the method for determining the control resource pool serial numbers will not be described in subsequent embodiments.

[0466] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, it is considered that the TCI state of the first PDCCH corresponding to the second CORESET is the same as the first TCI state, and / or the QCL of the first PDCCH corresponding to the second CORESET is the same as the first QCL. Among them, the TCI state of the first PDCCH corresponding to the second CORESET is the same as the first TCI state, and / or the QCL of the first PDCCH is the same as the first QCL, which includes three situations: 1. The TCI state of the first PDCCH is the same as the first TCI state; 2. The QCL of the first PDCCH is the same as the first QCL; 3. The TCI state of the first PDCCH is the same as the first TCI state, and the QCL of the first PDCCH is the same as the first QCL.

[0467] This will not be described in detail in the subsequent embodiments.

[0468] Second, the second CORESET includes any universal search space set.

[0469] In the present disclosure, the second CORESET only includes universal search space sets other than Type 3, or only includes universal search space sets corresponding to any type, that is, the second CORESET does not include a specific user search space set.

[0470] In some embodiments, the first CORESET and the second CORESET correspond to the same control resource set pool number.

[0471] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0472] In the present disclosure, when the first CORESET and the second CORESET correspond to the same control resource set pool number, the first PDCCH applies to the first TCI state, and / or the first PDCCH applies to the first QCL.

[0473] Optionally, a configuration signaling is sent to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0474] Indicatively, when the first CORESET and the second CORESET correspond to the same control resource set pool number, and the access network device sends a configuration signaling to the terminal to configure the indication information useIndicatedTCIState for the second CORESET (corresponding to the specific TCI state configured in the above configuration signaling), and enables the useIndicatedTCIState, then the first PDCCH applies to the first TCI state, and / or the first PDCCH applies to the first QCL.

[0475] Optionally, the configuration signaling may be implemented as at least one of DCI signaling, MAC CE signaling, and RCC signaling.

[0476] Illustratively, the specific TCI state refers to the Rel-17 TCI state indicated by the first DCI, that is, the unified TCI state, including at least one of the combined TCI state, the separated uplink TCI state, and the separated downlink TCI state. This characteristic TCI state will not be described in detail later.

[0477] Third, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET.

[0478] In the present disclosure, the general search space set may be implemented as a general search space set corresponding to any type except Type 3, or a general search space set corresponding to any type, without limitation.

[0479] Optionally, the TCI state corresponding to the first PDCCH is the same as or different from the first TCI state; and / or the QCL corresponding to the first PDCCH is the same as or different from the first QCL. There are mainly two types of situations: the first type corresponds to the same situation (including the TCI state being the same as the first TCI state, and / or the QCL being the same as the first QCL), and the second type corresponds to the different situation (including the TCI state being different from the first TCI state, and / or the QCL being different from the first QCL).

[0480] 1. First, the following situations are described separately, that is, the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL:

[0481] (1) The first CORESET and the second CORESET correspond to the same control resource set pool number.

[0482] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, the first PDCCH applies to the first TCI state; and / or,

[0483] When the control resource set pool numbers corresponding to the first CORESET and the second CORESET are the same, the first PDCCH applies to the first QCL.

[0484] (2) The first CORESET and the second CORESET correspond to the same control resource set pool number; and the access network device sends a configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0485] Optionally, the control resource set pool sequence number corresponding to the first CORESET and the second CORESET is the same, and the access network device sends a configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state;

[0486] Then, the TCI state corresponding to the first PDCCH is the same as the first TCI state, and / or the QCL of the first PDCCH is the same as the first QCL.

[0487] 2. Secondly, different situations are described separately, that is, the TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL, including the following situations:

[0488] (3) The first CORESET and the second CORESET correspond to the same control resource set pool number; and the access network device sends a configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0489] Optionally, when the control resource set pool sequence numbers corresponding to the first CORESET and the second CORESET are the same, and the terminal receives configuration signaling, the configuration signaling is used to instruct the second CORESET not to use a specific TCI state.

[0490] Then, the first PDCCH is not applicable to the first TCI state, and / or the first PDCCH is not applicable to the first QCL being different.

[0491] (4) The first CORESET and the second CORESET correspond to the same control resource set pool number; and the access network device does not send configuration signaling to the terminal. The configuration signaling is used to determine whether the second CORESET uses the configuration signaling of a specific TCI state.

[0492] Optionally, when the control resource set pool sequence number corresponding to the first CORESET and the second CORESET is the same, and the access network device does not send configuration signaling to the terminal, the terminal cannot determine whether the second CORESET can use a specific TCI state. Therefore, the first PDCCH is not applicable to the first TCI state and / or the first PDCCH is not applicable to the first QCL.

[0493] In the present disclosure, when the TCI state corresponding to the first PDCCH is different from the first TCI state, and / or the QCL corresponding to the first PDCCH is different from the first QCL:

[0494] Activate the second TCI state for the second CORESET through MAC CE signaling; and / or activate the second QCL for the second CORESET through MAC CE signaling. In this case, the TCI state corresponding to the first PDCCH is the second TCI state, and / or the QCL corresponding to the first PDCCH is the second QCL.

[0495] That is, the received MAC CE is the second TCI state activated by the second CORESET; and / or the received MAC CE is the second QCL activated by the second CORESET.

[0496] In this disclosure, the initial CORESET is implemented as CORESET#0, which is always associated with a CSS set of Type#0. When the second CORESET is CORESET#0, the implementation is the same as above and will not be repeated here.

[0497] In the embodiment of the present disclosure, description is given by taking an example where at least one applicable channel includes a PDCCH, and the PDCCH corresponds to the first search space set and the third CORESET.

[0498] In the present disclosure, whether the second PDCCH is applicable to the first TCI state, and / or whether the second PDCCH is applicable to the first QCL situation, is determined according to at least one of the first search space set and the third CORESET.

[0499] In the present disclosure, the first search space set may be implemented as at least one of a specific user search space set and a universal search space set.

[0500] First, the first search space set includes a specific user search space set and / or a type 3 general search space set.

[0501] In some embodiments, the first CORESET and the third CORESET correspond to the same control resource set pool number;

[0502] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0503] In the present disclosure, the first search space set is implemented to include only the specific user search space set and / or the general search space set corresponding to type 3, and does not include other types of general search space sets. In the present disclosure, type 3 is implemented as Type 3.

[0504] In the present disclosure, when the control resource pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, it is considered that the TCI state of the third PDCCH applies to the first TCI state; and / or; the QCL of the third PDCCH applies to the first QCL. The rules for determining whether the control resource pool sequence numbers corresponding to the first CORESET and the third CORESET are the same are the same as the rules for determining whether the control resource pool sequence numbers corresponding to the first CORESET and the second CORESET are the same.

[0505] That is, when the first CORESET and the third CORESET are not configured with a control resource pool serial number, the first CORESET and the third CORESET correspond to the same control resource pool serial number; or, the control resource pool serial numbers configured for the first CORESET and the third CORESET are both the first value, and the first CORESET and the third CORESET correspond to the same control resource pool serial number; or, the control resource pool serial numbers configured for the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource pool serial number.

[0506] Second, the first search space set includes any general search space set, or the first search space set includes an initial search space set.

[0507] In the present disclosure, the first search space set is implemented as a general search space set except for Type 3, or as a search space set corresponding to any type.

[0508] 1. First, the following situations are described separately, that is, the TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL:

[0509] (1) The first CORESET and the third CORESET correspond to the same control resource set pool number.

[0510] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, it is considered that the second PDCCH is applicable to the first TCI state, and / or the second PDCCH is applicable to the first QCL.

[0511] (2) The first CORESET and the third CORESET correspond to the same control resource set pool number; and the access network device sends a configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0512] In the present disclosure, the control resource set pool sequence number corresponding to the first CORESET and the third CORESET is the same, and the access network device sends a configuration signaling to the terminal, which is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0513] Then, the TCI state corresponding to the second PDCCH is the same as the first TCI state, and / or the QCL of the second PDCCH is the same as the first QCL.

[0514] 2. Secondly, different situations are described separately, that is, the TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL, including the following situations:

[0515] (3) The first CORESET and the third CORESET correspond to the same control resource set pool number; the access network device sends a configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0516] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, and the access network device sends a configuration signaling to the terminal, the configuration signaling is used to configure the third CORESET and / or the first search space set not to use a specific TCI state.

[0517] Then, the TCI state corresponding to the second PDCCH is not applicable to the first TCI state, and / or the QCL of the second PDCCH is not applicable and is different from the first QCL.

[0518] (4) The first CORESET and the third CORESET correspond to the same control resource set pool number; the access network device does not send configuration signaling to the terminal, and the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0519] In the present disclosure, when the control resource set pool sequence numbers corresponding to the first CORESET and the third CORESET are the same, when the access network device does not send configuration signaling to the terminal, when the access network device does not send configuration signaling to the terminal, the terminal cannot determine whether the third CORESET and / or the first search space set can use a specific TCI state, then it is considered that the TCI state corresponding to the second PDCCH is not applicable to the first TCI state, and / or the QCL of the second PDCCH is not applicable to the first QCL and is different.

[0520] In the present disclosure, when the TCI state corresponding to the second PDCCH is different from the first TCI state, and / or the QCL corresponding to the second PDCCH is different from the first QCL:

[0521] Activate a third TCI state for the third CORESET and / or the first search space set through MAC CE signaling; and / or activate a third QCL for the third CORESET and / or the first search space set through MAC CE signaling. In this case, the TCI state corresponding to the second PDCCH is the third TCI state, and / or the QCL corresponding to the second PDCCH is the third QCL.

[0522] That is, the received MAC CE is the third TCI state activated by the third CORESET and / or the first search space set; and / or, the received MAC CE is the third QCL activated by the third CORESET and / or the first search space set.

[0523] In the present disclosure, the initial search space set is implemented as SS Set #0, which corresponds to the CSS set of Type #0. When the first search space set is implemented as SS Set #0, its applicable method is the same as above and will not be repeated here.

[0524] In the embodiment of the present disclosure, description is given by taking as an example that at least one applicable channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0525] In the present disclosure, the PUSCH includes at least one of a PUSCH with a dynamic grant and a PUSCH with a configuration grant.

[0526] The first is the case where at least one channel is scheduled.

[0527] In some embodiments, a search space set and / or a TCI state of a CORESET corresponding to a PDCCH for scheduling at least one channel is the same as a first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to a PDCCH for scheduling at least one channel is the same as the first QCL;

[0528] The TCI state of at least one channel is the same as the first TCI state; and / or the QCL of at least one channel is the same as the first QCL.

[0529] In the present disclosure, the PDCCH may be used to schedule at least one of the PDSCH, PUCCH, and PUSCH.

[0530] In the present disclosure, when the TCL state corresponding to the CORESET and / or search space set corresponding to the PDCCH used for scheduling is the same as the first TCI state; and / or when the QCL corresponding to the CORESET and / or search space set corresponding to the PDCCH used for scheduling is the same as the first QCL, it means that the TCI state corresponding to the channel scheduled by the PDCCH is the first TCI state; and / or the QCL corresponding to the channel scheduled by the PDCCH is the first QCL.

[0531] It should be noted that the TCI state corresponding to a channel is the first TCI state; and / or; the QCL corresponding to a channel is the first QCL, which can also be called the TCI state corresponding to the DMRS of a channel is the first TCI state; and / or; the QCL corresponding to the DMRS of a channel is the first QCL.

[0532] The second is the case where at least one channel is not scheduled.

[0533] In some embodiments, the access network device sends radio resource control (RRC) and / or media access control element (MAC CE) configuration information to the terminal, where the configuration information is used to indicate whether at least one channel uses a specific TCI state, wherein at least one channel is not scheduled by downlink control signaling DCI.

[0534] In the present disclosure, there is also a situation where at least one channel is not scheduled by DCI signaling. When it is not scheduled by DCI signaling, at least one channel is configured through RRC signaling or MAC CE signaling, wherein the channel is configured to use the TCI state indicated by the DCI of the CORESET corresponding to which control resource set pool number the channel is specifically used.

[0535] 1. The case where at least one channel uses a specific TCI state.

[0536] In the present disclosure, RRC and / or MAC CE configuration information is used to indicate that at least one channel uses a specific TCI state; the TCI state of at least one channel is the same as the first TCI state; and / or the QCL of at least one channel is the same as the first QCL.

[0537] In the present disclosure, at least one channel is configured through RRC signaling and / or MAC CE signaling so that the channel uses a specific TCI state, which indicates that the TCI state corresponding to the channel is the first TCI state, and / or the QCL corresponding to the channel is the first QCL.

[0538] 2. The case where at least one channel does not use a specific TCI state.

[0539] In some embodiments, RRC and / or MAC CE configuration information is used to indicate that at least one channel does not use a specific TCI state; the TCI state of at least one channel is different from the first TCI state; and / or the QCL of at least one channel is different from the first QCL.

[0540] In the present disclosure, when at least one channel does not use a specific TCI state, it indicates that the TCI state of the at least one channel is not applicable to the first TCI state; and / or; the QCL of the at least one channel is not applicable to the first QCL.

[0541] In some embodiments, the access network device sends a fourth TCI state configured for at least one channel by RRC and / or MAC CE to the terminal; and / or, the access network device sends a fourth QCL configured for at least one channel by RRC and / or MAC CE to the terminal.

[0542] The TCI state of at least one channel is the same as the fourth TCI state; and / or the QCL of at least one channel is the same as the fourth QCL.

[0543] In the present disclosure, the fourth TCI state is configured for the channel via RRC and / or MAC CE and / or DCI; and / or the fourth QCL is configured for the channel via RRC and / or MAC CE and / or DCI. That is, the TCI state of the channel is the fourth TCI state, and / or the QCL of the channel is the fourth QCL.

[0544] In the embodiment of the present disclosure, description is given by taking as an example that the at least one applicable signal includes at least one of a channel state information reference signal DMRS, a CSI-RS, and a sounding reference signal SRS.

[0545] Optionally, the CSI-RS includes at least one of a CSI-RS for CSI measurement or a non-periodic CSI-RS for beam management measurement.

[0546] Optionally, the SRS includes at least one of a non-periodic SRS and an SRS for beam management.

[0547] The first is the case where at least one signal needs to be scheduled.

[0548] In some embodiments, the search space set and / or TCI state of the CORESET corresponding to the PDCCH used to schedule at least one signal is the same as the first TCI state; and / or, the QCL of the search space set and / or CORESET corresponding to the PDCCH used to schedule at least one signal is the same as the first QCL; the TCI state of at least one signal is the same as the first TCI state; and / or, the QCL of at least one signal is the same as the first QCL.

[0549] In the present disclosure, the PDCCH may be used to schedule at least one of the CSI-RS and the SRS.

[0550] In the present disclosure, when the TCL state corresponding to the CORESET and / or the search space set corresponding to the PDCCH used for scheduling is the same as the first TCI state; and / or; when the QCL corresponding to the CORESET and / or the search space set corresponding to the PDCCH used for scheduling is the same as the first QCL.

[0551] It indicates that the TCI state corresponding to the signal scheduled by the PDCCH is the first TCI state; and / or; the QCL corresponding to the signal scheduled by the PDCCH is the first QCL.

[0552] It should be noted that the TCI state corresponding to a signal is the first TCI state; and / or; the QCL corresponding to a signal is the first QCL, which can also be called the TCI state corresponding to the DMRS of a signal is the first TCI state; and / or; the QCL corresponding to the DMRS of a signal is the first QCL.

[0553] The second is the case where at least one signal is not scheduled.

[0554] In some embodiments, the access network device sends RRC and / or media access control control unit MAC CE configuration information to the terminal, where the above configuration information is used to indicate whether at least one signal uses a specific TCI state, wherein at least one signal is not scheduled by downlink control signaling DCI.

[0555] In the present disclosure, there is also a situation where at least one signal is not scheduled by DCI signaling. When it is not scheduled by DCI signaling, at least one signal is configured through RRC signaling or MAC CE signaling, wherein the signal is configured to use the TCI state indicated by the DCI of the CORESET corresponding to which control resource set pool number.

[0556] 1. When at least one signal uses a specific TCI state.

[0557] In the present disclosure, RRC and / or MAC CE configuration information is used to indicate that at least one signal uses a specific TCI state; the TCI state of at least one signal is the same as the first TCI state; and / or the QCL of at least one signal is the same as the first QCL.

[0558] In the present disclosure, at least one signal is configured through RRC signaling and / or MAC CE signaling so that the signal uses a specific TCI state, which indicates that the TCI state corresponding to the signal is the first TCI state, and / or the QCL corresponding to the signal is the first QCL.

[0559] 2. The case where at least one signal does not use a specific TCI state.

[0560] In some embodiments, the RRC and / or MAC CE configuration information is used to indicate that at least one signal does not use a specific TCI state; the TCI state of at least one signal is different from the first TCI state; and / or the QCL of at least one signal is different from the first QCL.

[0561] In the present disclosure, when at least one signal does not use a specific TCI state, it indicates that the TCI state of the at least one signal is not applicable to the first TCI state; and / or; the QCL of the at least one signal is not applicable to the first QCL.

[0562] In some embodiments, the access network device sends a fifth TCI state configured for at least one signal by RRC and / or MAC CE to the terminal; and / or, the access network device sends a fifth QCL configured for at least one signal by RRC and / or MAC CE to the terminal.

[0563] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0564] In the present disclosure, the fifth TCI state is configured for the signal through RRC and / or MAC CE and / or DCI; and / or, the fifth QCL is configured for the signal through RRC and / or MAC CE and / or DCI, that is, the TCI state of the signal is the fifth TCI state, and / or, the QCL of the signal is the fifth QCL.

[0565] To sum up, the communication method provided in the present invention sends an indication field contained in the first control information carried by the PDCCH on the first control resource set (ControlResource Set, CORESET) to the terminal, which is used to indicate the applicability of each channel and each signal corresponding to the first TCI state and / or the first QCL, thereby reducing the signaling overhead in the TCI state indication process and improving the beam transmission performance.

[0566] Indicative, Figure 4 This is a flow chart of a communication method provided by an exemplary embodiment of the present application, in which the method is applied to Figure 1 The communication system shown in FIG. Figure 4 As shown, the method includes the following steps.

[0567] Step 401: An access network device sends first control information carried in a physical downlink control channel (PDCCH) to a terminal via a first control resource set (CORESET).

[0568] The above-mentioned first control information includes an indication field, which is used to indicate the first transmission configuration indication TCI state or the first quasi-co-location QCL.

[0569] In step 402, the terminal determines, based on the indication field sent by the access network device, at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable.

[0570] Step 403: The terminal determines, based on the indication field sent by the access network device, at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable.

[0571] The at least one channel includes at least one of a PDCCH, a PDSCH, a PUCCH, and a PUSCH.

[0572] The at least one signal includes at least one of a DMRS, a CSI-RS, and an SRS.

[0573] To sum up, the communication method provided in the present invention determines the applicability of each channel and each signal corresponding to the first TCI state and / or the first QCL indicated by the indication field through the indication field contained in the first control information carried by the PDCCH on the first control resource set (Control Resource Set, CORESET), thereby reducing the signaling overhead in the TCI state indication process and improving the beam transmission performance.

[0574] Figure 5 This is a structural block diagram of a communication device provided by an exemplary embodiment of the present application, wherein the device is applied to a terminal, such as Figure 5 As shown, the device includes:

[0575] A receiving module 510 is configured to receive first control information carried by a physical downlink control channel PDCCH on a first control resource set CORESET, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication TCI state and / or a first quasi co-location QCL;

[0576] The determination module 520 is used to determine at least one channel and / or at least one signal to which the first TCI state indicated by the indication field is applicable; and / or, to determine at least one channel and / or at least one signal to which the first QCL indicated by the indication field is applicable.

[0577] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0578] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0579] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0580] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0581] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0582] In an optional embodiment, the receiving module 510 is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0583] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0584] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0585] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0586] In an optional embodiment, the receiving module 510 is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0587] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0588] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0589] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0590] In an optional embodiment, the receiving module 510 is further configured to receive configuration signaling, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0591] In an optional embodiment, the terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0592] In an optional embodiment, the receiving module 510 is further configured to receive a second TCI state and / or a second QCL activated by a media access control control element MAC CE for the second CORESET;

[0593] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0594] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0595] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0596] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0597] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0598] In an optional embodiment, the first search space set includes any general search space set;

[0599] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0600] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0601] In an optional embodiment, the receiving module 510 is further configured to receive configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0602] In an optional embodiment, the first search space set includes any general search space set;

[0603] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0604] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0605] In an optional embodiment, the receiving module 510 is further configured to receive configuration signaling, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0606] In an optional embodiment, the terminal does not receive configuration signaling, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0607] In an optional embodiment, the receiving module 510 is further configured to receive a MAC CE indicating a third TCI state activated for the third CORESET and / or the first search space set; and / or receive a MAC CE indicating a third QCL activated for the third CORESET and / or the first search space set;

[0608] Determine that the TCI state of the second PDCCH is the same as the third TCI state; and / or, that the QCL of the second PDCCH is the same as the third QCL.

[0609] In an optional embodiment, when the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or,

[0610] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0611] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0612] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0613] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0614] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0615] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0616] In an optional embodiment, a search space set and / or a TCI state of a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0617] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0618] In an optional embodiment, the receiving module 510 is further configured to receive RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0619] The at least one channel is not scheduled by downlink control signaling DCI.

[0620] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0621] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0622] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0623] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0624] In an optional embodiment, the receiving module 510 is further configured to receive a fourth TCI state and / or a fourth QCL configured by the RRC and / or MAC CE for the at least one channel;

[0625] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0626] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0627] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0628] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0629] In an optional embodiment, the receiving module 510 is further configured to receive RRC and / or MAC CE configuration information, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0630] The at least one signal is not scheduled by downlink control signaling DCI.

[0631] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0632] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0633] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0634] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0635] In an optional embodiment, the receiving module 510 is further configured to receive a fifth TCI state and / or a fifth QCL configured by the RRC and / or MAC CE for the at least one signal;

[0636] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0637] Figure 6 This is a structural block diagram of a communication device provided by another exemplary embodiment of the present application, wherein the device is applied to an access network device, such as Figure 6 As shown, the device includes:

[0638] A sending module 610 is configured to send first control information carried by a physical downlink control channel (PDCCH) to a terminal through a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indication (TCI) state and / or a first quasi-co-location (QCL) state.

[0639] The indication field is used to indicate at least one channel and / or at least one signal to which the first TCI state is applicable; and / or, the indication field is used to indicate at least one channel and / or at least one signal to which the first QCL is applicable.

[0640] In an optional embodiment, the at least one channel includes a first PDCCH, and the first PDCCH corresponds to a second CORESET.

[0641] In an optional embodiment, the second CORESET includes a specific user search space set and / or a type 3 general search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0642] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0643] In an optional embodiment, the second CORESET includes any universal search space set; the first CORESET and the second CORESET correspond to the same control resource set pool number;

[0644] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0645] In an optional embodiment, the sending module 610 is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0646] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0647] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0648] The TCI state of the first PDCCH is the same as the first TCI state; and / or the QCL of the first PDCCH is the same as the first QCL.

[0649] In an optional embodiment, the sending module 610 is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET to use a specific TCI state.

[0650] In an optional embodiment, the second CORESET includes a specific user search space set and a universal search space set, or the second CORESET includes an initial CORESET;

[0651] The first CORESET and the second CORESET correspond to the same control resource set pool number;

[0652] The TCI state of the first PDCCH is different from the first TCI state; and / or the QCL of the first PDCCH is different from the first QCL.

[0653] In an optional embodiment, the sending module 610 is further configured to send a configuration signaling to the terminal, where the configuration signaling is used to configure the second CORESET not to use a specific TCI state.

[0654] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the second CORESET uses a specific TCI state.

[0655] In an optional embodiment, the sending module 610 is further configured to send a media access control element MAC CE to the terminal, where the MAC CE is used to activate a second TCI state and / or a second QCL for the second CORESET;

[0656] The TCI state of the first PDCCH is the same as the second TCI state; and / or the QCL of the first PDCCH is the same as the second QCL.

[0657] In an optional embodiment, the at least one channel includes a second PDCCH, and the second PDCCH corresponds to the first search space set and the third CORESET.

[0658] In an optional embodiment, the first search space set includes a specific user search space set and / or a type 3 general search space set;

[0659] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0660] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0661] In an optional embodiment, the first search space set includes any general search space set;

[0662] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0663] The TCI state of the second PDCCH is the same as the first TCI state; and / or the QCL of the second PDCCH is the same as the first QCL.

[0664] In an optional embodiment, the sending module 610 is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to use a specific TCI state.

[0665] In an optional embodiment, the first search space set includes any general search space set;

[0666] The first CORESET and the third CORESET correspond to the same control resource set pool number;

[0667] The TCI state of the second PDCCH is different from the first TCI state; and / or the QCL of the second PDCCH is different from the first QCL.

[0668] In an optional embodiment, the sending module 610 is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure the third CORESET and / or the first search space set to not use a specific TCI state.

[0669] In an optional embodiment, the access network device does not send configuration signaling to the terminal, where the configuration signaling is used to determine whether the third CORESET and / or the first search space set uses a specific TCI state.

[0670] In an optional embodiment, the sending module 610 is further configured to send a MAC CE to the terminal, where the MAC CE is used to activate a third TCI state for the third CORESET and / or the first search space set; and / or send a MAC CE to the terminal, where the MAC CE is used to activate a third QCL for the third CORESET and / or the first search space set;

[0671] The TCI state of the second PDCCH is the same as the third TCI state; and / or the QCL of the second PDCCH is the same as the third QCL.

[0672] In an optional embodiment, when the first CORESET and the second CORESET are not configured with the control resource set pool sequence number, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number; or,

[0673] The control resource pool sequence numbers configured by the first CORESET and the second CORESET are both the first value, and the first CORESET and the second CORESET correspond to the same control resource pool sequence number; or

[0674] The control resource set pool serial numbers configured by the first CORESET and the second CORESET are both second values, and the first CORESET and the second CORESET correspond to the same control resource set pool serial number.

[0675] In an optional embodiment, when the first CORESET and the third CORESET are not configured with the control resource set pool sequence number, the first CORESET and the third CORESET correspond to the same control resource set pool sequence number; or,

[0676] The control resource pool sequence numbers configured by the first CORESET and the third CORESET are both first values, and the first CORESET and the third CORESET correspond to the same control resource pool sequence number; or

[0677] The control resource set pool serial numbers configured by the first CORESET and the third CORESET are both the second value, and the first CORESET and the third CORESET correspond to the same control resource set pool serial number.

[0678] In an optional embodiment, the at least one channel includes at least one of a physical downlink shared channel PDSCH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH.

[0679] In an optional embodiment, a search space set and / or a TCI state of a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first TCI state; and / or a QCL of a search space set and / or a CORESET corresponding to the PDCCH for scheduling the at least one channel is the same as the first QCL;

[0680] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0681] In an optional embodiment, the sending module 610 is further configured to send RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one channel uses a specific TCI state;

[0682] The at least one channel is not scheduled by downlink control signaling DCI.

[0683] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel uses a specific TCI state;

[0684] The TCI state of the at least one channel is the same as the first TCI state; and / or the QCL of the at least one channel is the same as the first QCL.

[0685] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one channel does not use a specific TCI state;

[0686] The TCI state of the at least one channel is different from the first TCI state; and / or the QCL of the at least one channel is different from the first QCL.

[0687] In an optional embodiment, the sending module 610 is further configured to send the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fourth TCI state and / or a fourth QCL for the at least one channel;

[0688] The TCI state of the at least one channel is the same as the fourth TCI state; and / or the QCL of the at least one channel is the same as the fourth QCL.

[0689] In an optional embodiment, the at least one signal includes at least one of a channel state information reference signal CSI-RS and a sounding reference signal SRS.

[0690] In an optional embodiment, the search space set and / or the TCI state of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first TCI state; and / or the search space set and / or the QCL of the CORESET corresponding to the PDCCH used to schedule the at least one signal is the same as the first QCL;

[0691] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0692] In an optional embodiment, the sending module 610 is further configured to send RRC and / or MAC CE configuration information to the terminal, where the RRC and / or MAC CE configuration information is used to indicate whether the at least one signal uses a specific TCI state;

[0693] The at least one signal is not scheduled by downlink control signaling DCI.

[0694] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal uses a specific TCI state;

[0695] The TCI state of the at least one signal is the same as the first TCI state; and / or the QCL of the at least one signal is the same as the first QCL.

[0696] In an optional embodiment, the RRC and / or MAC CE configuration information is used to indicate that the at least one signal does not use a specific TCI state;

[0697] The TCI state of the at least one signal is different from the first TCI state; and / or the QCL of the at least one signal is different from the first QCL.

[0698] In an optional embodiment, the sending module 610 is further configured to send the RRC and / or MAC CE to the terminal, where the RRC and / or MAC CE is used to configure a fifth TCI state and / or a fifth QCL for the at least one signal;

[0699] The TCI state of the at least one signal is the same as the fifth TCI state; and / or the QCL of the at least one signal is the same as the fifth QCL.

[0700] To sum up, the communication device provided in the present invention determines the applicability of each channel and each signal corresponding to the first TCI state and / or the first QCL indicated by the indication field through the indication field contained in the first control information carried by the PDCCH on the first control resource set (Control Resource Set, CORESET), thereby reducing the signaling overhead in the TCI state indication process and improving the beam transmission performance.

[0701] Figure 7 A schematic structural diagram of a communication device 700 (terminal device or access network device) provided by an exemplary embodiment of the present disclosure is shown. The communication device 700 includes: a processor 701, a receiver 702, a transmitter 703, a memory 704 and a bus 705.

[0702] The processor 701 includes one or more processing cores. The processor 701 executes various functional applications and information processing by running software programs and modules.

[0703] The receiver 702 and the transmitter 703 may be implemented as a communication component, which may be a communication chip.

[0704] The memory 704 is connected to the processor 701 via a bus 705 .

[0705] The memory 704 may be used to store at least one instruction, and the processor 701 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0706] In addition, the memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0707] An exemplary embodiment of the present disclosure further provides a status indication system, the system comprising: a terminal device and an access network device;

[0708] The terminal device includes Figure 5 The communication device provided by the illustrated embodiment;

[0709] The access network equipment includes: Figure 6 The illustrated embodiment provides a communication device.

[0710] An exemplary embodiment of the present disclosure also provides a computer-readable storage medium, which stores at least one instruction, at least one program, code set or instruction set. The at least one instruction, the at least one program, the code set or instruction set is loaded and executed by the processor to implement the steps performed by the terminal in the communication method provided by the above-mentioned various method embodiments.

[0711] An exemplary embodiment of the present disclosure further provides a computer program product, characterized in that it includes a computer program or instructions, which, when executed by a processor, implements the steps performed by the terminal in the communication methods provided by the above-mentioned various method embodiments.

[0712] It should be understood that the term "plurality" used herein refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0713] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0714] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that: The method is executed by a terminal, and includes: receiving first control information carried by a physical downlink control channel (PDCCH) on a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; receiving configuration signaling, the configuration signaling being used to configure a second CORESET to use a specific TCI state, where the second CORESET includes any common search space set, or the second CORESET includes a specific user search space set and a common search space set, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state; According to the control resource set pool sequence number corresponding to the first CORESET, determine at least one channel to which the first TCI state indicated by the indication field is applicable; wherein, the at least one channel includes a first PDCCH, the first PDCCH corresponds to the second CORESET, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number, and the TCI state of the first PDCCH is the same as the first TCI state.

2. A communication method, characterized in that: The method is executed by a terminal, and includes: receiving first control information carried by a physical downlink control channel (PDCCH) on a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; Determine that the first PDCCH is not applicable to the first TCI state; wherein, the first PDCCH corresponds to a second CORESET, the second CORESET includes a specific user search space set and a general search space set, the first CORESET and the second CORESET correspond to the same control resource set pool number, the TCI state of the first PDCCH is different from the first TCI state, and the terminal does not receive configuration signaling, the configuration signaling is used to determine whether the second CORESET uses a specific TCI state, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state.

3. A communication method, characterized in that: The method is performed by an access network device, and the method includes: Sending first control information carried by a physical downlink control channel (PDCCH) to the terminal through a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; sending configuration signaling to the terminal, where the configuration signaling is used to configure a second CORESET to use a specific TCI state, where the second CORESET includes any common search space set, or the second CORESET includes a specific user search space set and a common search space set, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state; The control resource set pool sequence number corresponding to the first CORESET is used to determine at least one channel to which the first TCI state is applicable; wherein, the at least one channel includes a first PDCCH, the first PDCCH corresponds to the second CORESET, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number, and the TCI state of the first PDCCH is the same as the first TCI state.

4. A communication method, characterized in that: The method is performed by an access network device, and the method includes: Sending, through the first CORESET, first control information carried by a physical downlink control channel (PDCCH) to the terminal, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; In which, the first PDCCH is determined by the terminal to be not applicable to the first TCI state, the first PDCCH corresponds to the second CORESET, the second CORESET includes a specific user search space set and a general search space set, the first CORESET and the second CORESET correspond to the same control resource set pool number, the TCI state of the first PDCCH is different from the first TCI state, and the access network device does not send configuration signaling to the terminal, the configuration signaling is used to determine whether the second CORESET uses a specific TCI state, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state.

5. A communication device, characterized in that: The device comprises: a receiving module, configured to receive first control information carried by a physical downlink control channel (PDCCH) on a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; The receiving module is further configured to receive configuration signaling, where the configuration signaling is used to configure a second CORESET to use a specific TCI state, where the second CORESET includes any common search space set, or the second CORESET includes a specific user search space set and a common search space set, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state; A determination module is used to determine at least one channel to which the first TCI state indicated by the indication field is applicable according to the control resource set pool sequence number corresponding to the first CORESET; wherein the at least one channel includes a first PDCCH, the first PDCCH corresponds to the second CORESET, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number, and the TCI state of the first PDCCH is the same as the first TCI state.

6. A communication device, characterized in that: The device is applied to a terminal, and includes: a receiving module, configured to receive first control information carried by a physical downlink control channel (PDCCH) on a first control resource set (CORESET), where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; In which, the first PDCCH is determined by the terminal to be not applicable to the first TCI state, the first PDCCH corresponds to the second CORESET, the second CORESET includes a specific user search space set and a general search space set, the first CORESET and the second CORESET correspond to the same control resource set pool number, the TCI state of the first PDCCH is different from the first TCI state, and the access network device does not send configuration signaling to the terminal, the configuration signaling is used to determine whether the second CORESET uses a specific TCI state, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state.

7. A communication device, characterized in that: The device comprises: a sending module, configured to send, through a first control resource set (CORESET), first control information carried by a physical downlink control channel (PDCCH) to a terminal, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; The sending module is further configured to send configuration signaling to the terminal, where the configuration signaling is used to configure a second CORESET to use a specific TCI state, where the second CORESET includes any common search space set, or the second CORESET includes a specific user search space set and a common search space set, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state; The control resource set pool sequence number corresponding to the first CORESET is used to determine at least one channel to which the first TCI state is applicable; wherein, the at least one channel includes a first PDCCH, the first PDCCH corresponds to the second CORESET, the first CORESET and the second CORESET correspond to the same control resource set pool sequence number, and the TCI state of the first PDCCH is the same as the first TCI state.

8. A communication device, characterized in that: The device is applied to an access network device, and includes: a sending module, configured to send, through a first CORESET, first control information carried by a physical downlink control channel (PDCCH) to a terminal, where the first control information includes an indication field, where the indication field is used to indicate a first transmission configuration indicator (TCI) state, where the first TCI state includes at least one of a joint TCI state, a separate uplink TCI state, and a separate downlink TCI state; In which, the first PDCCH is determined by the terminal to be not applicable to the first TCI state, the first PDCCH corresponds to the second CORESET, the second CORESET includes a specific user search space set and a general search space set, the first CORESET and the second CORESET correspond to the same control resource set pool number, the TCI state of the first PDCCH is different from the first TCI state, and the access network device does not send configuration signaling to the terminal, the configuration signaling is used to determine whether the second CORESET uses a specific TCI state, and the specific TCI state includes at least one of the joint TCI state, the separated uplink TCI state, and the separated downlink TCI state.

9. A terminal, characterized in that: The terminal includes: processor; a transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the communication method according to claim 1 or 2.

10. An access network device, characterized in that: The access network equipment includes: processor; a transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the communication method according to claim 3 or 4.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores at least one instruction, at least one program, a code set, or an instruction set, and the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the communication method as described in claim 1 or 2, or to implement the communication method as described in claim 3 or 4.

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