Beam information determining method, terminal, and network device

A terminal, comprising:

• a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the computer program, when executed by the processor, cause the processor to perform operations comprising:
• determining at least two pieces of default beam information according to preset beam information of a first Component Carrier (CC) or a first Bandwidth Part (BWP),
• wherein in response to determining that the default beam information comprises second default beam information of a first Transmitting and Receiving Point (TRP) and second default beam information of one or more other TRPs:
• preset beam information corresponding to the first TRP comprises third Transmission Configuration Indication (TCI) state information corresponding to a third codepoint in a TCI field of Downlink Control Information (DCD) sent by the first TRP, and
• preset beam information corresponding to the one or more other TRPs comprises other TCI state information corresponding to the third codepoint in the TCI field of the DCI sent by the first TRP,
• wherein:
• the third codepoint corresponds to two or more pieces of TCI state information,
• the third TCI state information is any one of the two or more pieces of TCI state information, and
• the other TCI state information is TCI state information other than the third TCI state information of the two or more pieces of TCI state information;
• and
• determining, according to the default beam information, beam information of a channel or a reference signal comprised in a set corresponding to the default beam information, wherein the set comprises at least one channel or at least one reference signal,
• wherein:
• different default beam information corresponds to different sets, and
• manners of dividing the different sets comprise at least one of the following:
• a control channel and a service channel respectively belonging to the different sets, respectively;
• the different sets respectively comprising different source reference signals of channels or reference signals, respectively;
• or
• the same type of channels being divided into the different sets according to different usages.

A network device, wherein the network device is a Transmitting and Receiving Point (TRP) and comprises:

• a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the computer program, when executed by the processor, cause the processor to perform operations comprising:
• determining at least two pieces of default beam information according to preset beam information of a first Component Carrier (CC) or a first Bandwidth Part (BWP),
• wherein in response to determining that the default beam information comprises second default beam information of a first TRP and second default beam information of one or more other TRPs:
• preset beam information corresponding to the first TRP comprises:
• third Transmission Configuration Indication (TCD) state information corresponding to a third codepoint in a TCI field of Downlink Control Information (DCI) sent by the first TRP, and
• preset beam information corresponding to the one or more other TRPs comprises:
• other TCI state information corresponding to the third codepoint in the TCI field of the DCI sent by the first TRP,
• wherein:
• the third codepoint corresponds to two or more pieces of TCI state information,
• the third TCI state information is any one of the two or more pieces of TCI state information, and
• the other TCI state information is TCI state information other than the third TCI state information of the two or more pieces of TCI state information;
• and
• determining, according to the default beam information, beam information of a channel or a reference signal comprised in a set corresponding to the default beam information, wherein the set comprises at least one channel or at least one reference signal,
• wherein:
• different default beam information corresponds to different sets, and manners of dividing the different sets comprise at least one of the following:
• a control channel and a service channel respectively belonging to the different sets, respectively;
• different sets respectively comprising different source reference signals of channels or reference signals, respectively;
• or
• the same type of channels being divided into the different sets according to different usages.