US 12,225,119 B2
Information sending method, key generation method, and apparatus
He Li, Shanghai (CN); and Jing Chen, Shanghai (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 3, 2020, as Appl. No. 17/011,698.
Application 17/011,698 is a continuation of application No. PCT/CN2019/080159, filed on Mar. 28, 2019.
Claims priority of application No. 201810308232.1 (CN), filed on Apr. 8, 2018.
Prior Publication US 2020/0403788 A1, Dec. 24, 2020
Int. Cl. H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0866 (2013.01) [H04L 9/0819 (2013.01); H04L 9/088 (2013.01); H04L 9/3242 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An information sending method comprising:
sending, by an access network element and to an access and management function network element, a request message that comprises an explicit indication indicating whether an access stratum (AS) security mode command (SMC) procedure needs to be triggered;
receiving, by the access and management function network element, the request message;
determining, by the access and management function network element based on the explicit indication carried in the request message and based on a terminal device type of a terminal device, whether the AS SMC procedure is to be performed by:
determining that the AS SMC procedure needs to be performed when the terminal device type is an enhanced mobile broadband (eMBB) type; and
determining that the AS SMC procedure does not need to be performed when the terminal device type is one of a massive machine type of communication (mMTC) type or an ultra-reliable low latency communication (URLLC) type;
sending, by the access and management function network element and when the AS SMC procedure is to be performed, an initial context setup request message to the access network element, wherein the initial context setup request message carries a necessary parameter for performing the AS SMC procedure;
receiving, by the access network element, the necessary parameter from the access and management function network element; and
sending, by the access network element based on the necessary parameter from the access and management function network element, an AS SMC message to a terminal.