US 12,232,060 B2
Synchronization indication method and device
Yue Ma, Chang'an Dongguan (CN); and Xiaodong Yang, Chang'an Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Appl. No. 16/961,659
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
PCT Filed Jan. 10, 2019, PCT No. PCT/CN2019/071134
§ 371(c)(1), (2) Date Jul. 10, 2020,
PCT Pub. No. WO2019/137422, PCT Pub. Date Jul. 18, 2019.
Claims priority of application No. 201810027222.0 (CN), filed on Jan. 11, 2018.
Prior Publication US 2020/0404602 A1, Dec. 24, 2020
Int. Cl. H04W 56/00 (2009.01); H04W 24/10 (2009.01); H04W 36/00 (2009.01); H04W 48/16 (2009.01)
CPC H04W 56/001 (2013.01) [H04W 24/10 (2013.01); H04W 36/0061 (2013.01); H04W 48/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A synchronization indication method, applied to a user equipment, comprising:
receiving synchronization indication information transmitted by a network device in case that there are different serving cells serving the user equipment, wherein the synchronization indication information indicates a plurality of serving cells from the different serving cells serving the user equipment as timing reference for a neighboring cell;
taking time of a corresponding serving cell from the plurality of serving cells as timing reference for the neighboring cell according to the synchronization indication information;
wherein the receiving synchronization indication information transmitted by a network device, comprises: receiving a broadcast message transmitted by the network device; wherein the broadcast message comprises the synchronization indication information; wherein the taking time of a corresponding serving cell from the plurality of serving cells as timing reference for the neighboring cell according to the synchronization indication information, comprises: when the synchronization indication information indicates true, taking a current serving cell or a serving cell configured by the network device from the plurality of serving cells as timing reference for a neighboring cell at a current frequency; wherein the current frequency refers to a frequency at which the broadcast message is received; or,
wherein the receiving synchronization indication information transmitted by a network device, comprises: receiving a dedicated signaling transmitted by the network device; wherein the dedicated signaling comprises the synchronization indication information; wherein the taking time of a corresponding serving cell from the plurality of serving cells as timing reference for the neighboring cell according to the synchronization indication information, comprises: when the synchronization indication information indicates true, taking a serving cell configured by the network device from the plurality of serving cells as timing reference for all or part of neighboring cells at a current measurement object frequency configured by the network device;
wherein the plurality of serving cells as timing reference for the neighboring cell comprise the following combinations:
one or more serving cells configured by the network device;
one or more special cells (SpCell) configured by the network device;
one or more cells in a cell list configured by the network device;
a reference serving cell configured in a measurement object (MO), wherein the reference serving cell configured in the MO is used as timing reference for all cells associated with the same radio access technology (RAT) as the reference serving cell configured in the MO;
wherein configuration manner of one or more serving cells configured by the network device, comprises one or more serving cells indicated by the network device through an E-UTRAN cell global identifier (ECGI);
wherein configuration manner of one or more special cells (SpCell) configured by the network device, comprises any one or more of the following combinations:
a primary cell (PCell) and/or a primary-secondary cell (PSCell) defaulted by the network device;
a PCell and/or a PSCell configured by the network device;
a PCell and/or a PSCell indicated by the network device through an E-UTRAN cell global identifier (ECGI);
wherein configuration manner of one or more cells in the cell list configured by the network device, comprises any one or more of the following combinations:
a serving cell indicated by the network device through an E-UTRAN cell global identifier (ECGI);
a PCell and/or a PSCell defaulted by the network device; and
a PCell and/or a PSCell configured by the network device.