US 12,149,485 B2
Communications method and apparatus
Yuchen Wang, Shenzhen (CN); Chenwan Li, Beijing (CN); Yiling Wu, Beijing (CN); and Zhenyu Li, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jul. 2, 2021, as Appl. No. 17/366,815.
Application 17/366,815 is a continuation of application No. PCT/CN2019/070713, filed on Jan. 7, 2019.
Prior Publication US 2021/0336751 A1, Oct. 28, 2021
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 72/0453 (2023.01); H04L 5/14 (2006.01)
CPC H04L 5/0092 (2013.01) [H04L 27/2657 (2013.01); H04W 72/0453 (2013.01); H04L 5/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A communications method, wherein the method comprises:
obtaining effective carrier indication information from a network device, wherein:
the effective carrier indication information comprises first information, second information, and third information;
the first information comprises first indication information, second indication information, or third indication information;
the first indication information is used to indicate that carriers are not paired;
the second indication information is used to indicate that the carriers are paired;
the third indication information is used to indicate a frequency spacing between paired carriers;
the second information is used to indicate a start carrier frequency; and
the third information is used to indicate a frequency domain location of an effective carrier relative to a start carrier, wherein the effective carrier comprises a third effective carrier;
performing blind detection on a plurality of carriers indicated by a preset carrier frequency set, to obtain a synchronization signal;
obtaining a frequency of the third effective carrier based on the synchronization signal, wherein the third effective carrier comprises a carrier carrying the synchronization signal and a carrier carrying a physical broadcast channel (PBCH); and
obtaining an effective carrier frequency based on the effective carrier indication information.