CSS monitoring method and terminal
A CSS monitoring method, includes: monitoring, by a terminal, a PDCCH candidate on a CSS set, where the terminal uses same first information as an anchor node, or uses same first information as a cell/TRP associated with the CSS set.
1 . A common search space (CSS) monitoring method, comprising:
monitoring, by a terminal, a physical downlink control channel (PDCCH) candidate on a CSS set; wherein
the terminal uses same first information as an anchor node;
wherein monitoring, by the terminal, the PDCCH candidate on the CSS set is performed in a case that at least one of following cases is met:
at least one CORESET being switched to/associated with a target cell/adjacent cell;
a special TRP being switched to/associated with the target cell/adjacent cell;
the anchor node being switched to/associated with the target cell/adjacent cell;
the anchor node remaining unchanged, and in a case that there are a plurality of TRPs, a cell associated with a TRP of a non-anchor node being switched to/associated with the target cell/adjacent cell;
configuration information of a new cell being used;
a PDCCH being switched to/associated with the target cell/adjacent cell; or
a special cell (sPcell) being switched to/associated with the target cell/adjacent cell;
wherein being switched to/associated with the target cell/adjacent cell comprises:
cell/TRP identification information of the target cell/adjacent cell being associated/configured in configuration information;
wherein using the same first information as the anchor node comprises at least one of following:
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0-PDCCH CSS set;
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0A-PDCCH CSS set; or
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type2-PDCCH CSS set.
2 . The method according to claim 1 , wherein the first information is used in at least one of following cases:
a case that the terminal monitors the PDCCH candidate on the CSS set; or
a case that the terminal transmits a target channel or signal; wherein
the target channel or signal is scheduled by/associated with downlink control information (DCI) monitored on the PDCCH candidate.
3 . The method according to claim 1 , wherein the first information comprises at least one of following:
cell configuration information;
related configuration information of the CSS set;
beam information;
a default beam;
a pathloss reference reference signal;
timing-related information;
scrambling information; or
a radio network temporary identity (RNTI).
4 . The method according to claim 3 , wherein the first information comprises the beam information, wherein
for a downlink channel or signal scheduled by/associated with the DCI monitored on the PDCCH candidate, in a case that a network configures/activates/indicates a TCI, the beam information is the TCI of a cell/TRP associated with the CSS set; or
for an uplink channel or signal scheduled by/associated with the DCI monitored on the PDCCH candidate, in a case that a network configures/activates/indicates TCI/space-related information, the beam information is TCI/space-related information of the cell/TRP associated with the CSS set; or
in a case that a network configures/activates/indicates TCI/space-related information, a reference signal in the TCI/space-related information belongs to the cell/TRP associated with the CSS set.
5 . The method according to claim 3 , wherein the first information comprises the default beam, and the default beam meets at least one of following:
for a downlink channel or signal scheduled by/associated with the DCI monitored on the PDCCH candidate, in a case that a network does not configure/not activate/not indicate a TCI, the default beam is a beam used by the downlink channel or signal; or
for an uplink channel or signal scheduled by/associated with the DCI monitored on the PDCCH candidate, in a case that a network does not configure/not activate/not indicate TCI/space-related information, the default beam is a beam used by the uplink channel or signal;
and/or
the first information comprises the default beam, and a reference signal associated with the default beam comprises at least one of following:
a synchronization signal and PBCH block (SSB) during initial access of the cell;
a quasi-co-location reference signal of a control resource set (CORESET) with a minimum number associated with an active Bandwidth part (BWP);
the quasi-co-location reference signal of the CORESET with the minimum number associated with the active BWP, wherein the active BWP corresponds to a TRP;
a quasi-co-location reference signal of a TCI with a minimum number associated with the active BWP; or
a quasi-co-location reference signal of an active TCI with a minimum number associated with the active BWP; and/or
the first information comprises the default beam, wherein a network activates use of the default beam, and/or the terminal supports the use of the default beam.
6 . The method according to claim 3 , wherein the first information comprises the default beam, and monitoring, by the terminal, the PDCCH candidate on the CSS set comprises:
monitoring, by the terminal, the PDCCH candidate on the CSS set in a case that a network does not configure/not activate/not indicate the TCI.
7 . The method according to claim 3 , wherein the scrambling information comprises at least one of following:
a physical downlink control channel demodulation reference signal scrambling identity (pdcch-DMRS-ScramblingID);
a scrambling identity (ScramblingId);
a data scrambling identity physical downlink shared channel (dataScramblingIdentityPDSCH);
a hopping identity (hoppingId); or
a data scrambling identity physical uplink shared channel (dataScramblingIdentityPUSCH).
8 . The method according to claim 3 , wherein the RNTI comprises at least one of following:
a cell radio network temporary identity (C-RNTI);
a modulation and coding strategy cell radio network temporary identity (mcs-C-RNTI);
a configuration scheduling radio network temporary identity (CS-RNTI);
a system information radio network temporary identity (SI-RNTI);
a paging radio network temporary identity (P-RNTI);
a random access radio network temporary identity (RA-RNTI); or
a temporary cell radio network temporary identity (TC-RNTI).
9 . The method according to claim 1 , wherein being switched to/associated with the target cell/adjacent cell further comprises at least one of following:
beam reference information being associated with the target cell/adjacent cell; or
beam reference information of the associated CORESET being associated with the target cell/adjacent cell.
10 . The method according to claim 1 , wherein that the cell/TRP identification information of the target cell/adjacent cell is associated/configured in the configuration information comprises:
the cell/TRP identification information of the target cell/adjacent cell being configured in a TCI;
the cell/TRP identification information of the target cell/adjacent cell in a quasi-co-location (QCL) reference signal being configured in the TCI; and
the QCL reference signal in the TCI being associated with the target cell/adjacent cell.
11 . A terminal, comprising a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, wherein the program or the instruction, when executed by the processor, causes the terminal to perform:
monitoring a physical downlink control channel (PDCCH) candidate on a CSS set; wherein
the terminal uses same first information as an anchor node;
wherein monitoring the PDCCH candidate on the CSS set is performed in a case that at least one of following cases is met:
at least one CORESET being switched to/associated with a target cell/adjacent cell;
a special TRP being switched to/associated with the target cell/adjacent cell;
the anchor node being switched to/associated with the target cell/adjacent cell;
the anchor node remaining unchanged, and in a case that there are a plurality of TRPs, a cell associated with a TRP of a non-anchor node being switched to/associated with the target cell/adjacent cell;
configuration information of a new cell being used;
a PDCCH being switched to/associated with the target cell/adjacent cell; or
a special cell (sPcell) being switched to/associated with the target cell/adjacent cell;
wherein being switched to/associated with the target cell/adjacent cell comprises:
cell/TRP identification information of the target cell/adjacent cell being associated/configured in configuration information;
wherein using the same first information as the anchor node comprises at least one of following:
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0-PDCCH CSS set;
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0A-PDCCH CSS set; or
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type2-PDCCH CSS set.
12 . The terminal according to claim 11 , wherein the first information comprises at least one of following:
cell configuration information;
related configuration information of the CSS set;
beam information;
a default beam;
a pathloss reference reference signal;
timing-related information;
scrambling information; or
a radio network temporary identity (RNTI).
13 . The terminal according to claim 11 , wherein the first information is used in at least one of following cases:
a case that the terminal monitors the PDCCH candidate on the CSS set; or
a case that the terminal transmits a target channel or signal; wherein
the target channel or signal is scheduled by/associated with downlink control information (DCI) monitored on the PDCCH candidate.
14 . The terminal according to claim 11 , wherein the first information comprises a transmission configuration indicator (TCI); wherein
a reference signal indicated by a TCI identifier of the CSS set belongs to a cell/TRP associated with the CSS set; and the reference signal indicated by the TCI identifier of the CSS set does not belong to a cell/TRP unassociated with the CSS set.
15 . A non-transitory readable storage medium, storing a program or an instruction, wherein the program or the instruction, when executed by a processor of a terminal, causes the terminal to perform:
monitoring a physical downlink control channel (PDCCH) candidate on a CSS set; wherein
the terminal uses same first information as an anchor node;
wherein monitoring the PDCCH candidate on the CSS set is performed in a case that at least one of following cases is met:
at least one CORESET being switched to/associated with a target cell/adjacent cell;
a special TRP being switched to/associated with the target cell/adjacent cell;
the anchor node being switched to/associated with the target cell/adjacent cell;
the anchor node remaining unchanged, and in a case that there are a plurality of TRPs, a cell associated with a TRP of a non-anchor node being switched to/associated with the target cell/adjacent cell;
configuration information of a new cell being used;
a PDCCH being switched to/associated with the target cell/adjacent cell; or
a special cell (sPcell) being switched to/associated with the target cell/adjacent cell;
wherein being switched to/associated with the target cell/adjacent cell comprises:
cell/TRP identification information of the target cell/adjacent cell being associated/configured in configuration information;
wherein using the same first information as the anchor node comprises at least one of following:
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0-PDCCH CSS set;
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type0A-PDCCH CSS set; or
using the same first information as the anchor node in a case that the terminal monitors a PDCCH candidate on a Type2-PDCCH CSS set.