US 11,956,715 B2
Communications method and apparatus
Hao Hu, Shenzhen (CN); Zhongding Lei, Singapore (SG); Rong Wu, Shenzhen (CN); and Bo Zhang, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Oct. 25, 2021, as Appl. No. 17/452,185.
Application 17/452,185 is a continuation of application No. PCT/CN2019/084657, filed on Apr. 26, 2019.
Prior Publication US 2022/0046532 A1, Feb. 10, 2022
Int. Cl. H04W 4/00 (2018.01); H04W 8/12 (2009.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 48/18 (2009.01); H04W 60/04 (2009.01)
CPC H04W 48/18 (2013.01) [H04W 8/12 (2013.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 60/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving, by an apparatus, a second random number (RAND) from a mobility management network element, and generating, by the apparatus, a first RAND based on the second RAND and a first key;
obtaining, by the apparatus, first slice selection assistance information and second slice selection assistance information, wherein the first slice selection assistance information is obtained by encrypting the second slice selection assistance information using a first function and the first RAND, and the second slice selection assistance information is selection assistance information of a slice the apparatus is allowed to access; and
sending, by the apparatus, a first registration request message to an access network device, wherein the first registration request message comprises the first slice selection assistance information.