Paging synchronization indication method and device, paging synchronization method and device, and base station

A method for paging synchronization, executed by User Equipment (UE), the method comprising:

• receiving a Radio Resource Control (RRC) signaling and paging configuration information from a base station respectively, the RRC signaling comprising indication information, the indication information being used for indicating whether a non-cell-defining Synchronization Signal Block (SSB) is capable of being used for establishing paging synchronization, and the paging configuration information being used for configuring a paging occasion;
• comparing a distance between the non-cell-defining SSB and the paging occasion with a distance between a cell-defining SSB and the paging occasion during a period in which an RRC connection is maintained;
• and
• adopting the non-cell-defining SSB to establish the paging synchronization, in response to that the distance between the non-cell-defining SSB and the paging occasion is less than the distance between the cell-defining SSB and the paging occasion, and in response to determining that the non-cell-defining SSB has a Quasi-Collocated (QCL) relationship with the paging occasion and the indication information is used for indicating that the non-cell-defining SSB is capable of being used for establishing the paging synchronization.

A device for indicating paging synchronization, comprising:

• a processor;
• and
• memory configured to store instructions executable by the processor,
• wherein the processor is configured to:
• add indication information into a Radio Resource Control (RRC) signaling, the indication information being used for indicating whether a non-cell-defining Synchronization Signal Block (SSB) is capable of being used for establishing paging synchronization;
• and
• transmit, to User Equipment (UE), the RRC signaling added with the indication information and paging configuration information used for configuring a paging occasion respectively, wherein the indication information and the paging configuration information jointly serve as a received information set of the UE, and are configured to enable the UE to determine whether to adopt the non-cell-defining SSB or a cell-defining SSB to establish the paging synchronization.

A device for paging synchronization, comprising:

• a processor;
• and
• memory configured to store instructions executable by the processor,
• wherein the processor is configured to:
• receive a Radio Resource Control (RRC) signaling and paging configuration information from a base station respectively, the RRC signaling comprising indication information, the indication information being used for indicating whether a non-cell-defining Synchronization Signal Block (SSB) is capable of being used for establishing paging synchronization, and the paging configuration information being used for configuring a paging occasion;
• compare a distance between the non-cell-defining SSB and the paging occasion with a distance between a cell-defining SSB and the paging occasion during a period in which an RRC connection is maintained;
• and
• adopt the non-cell-defining SSB to establish the paging synchronization, in response to that the distance between the non-cell-defining SSB and the paging occasion is less than the distance between the cell-defining SSB and the paging occasion, and in response to that the non-cell-defining SSB has a Quasi-Collocated (QCL) relationship with the paging occasion and the indication information is used for indicating that the non-cell-defining SSB is capable of being used for establishing the paging synchronization.