Patent ID: 11882618
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A communications apparatus, being a user equipment (UE), or, a chipset for the UE, comprising:
a processor, configured to execute one or more instructions stored in a memory to cause the communications apparatus to perform steps comprising:
receiving, from a first access network node, information indicating a target security parameter when the UE is in a first RRC mode before entering a second RRC mode in which a first access network dedicated identifier of the UE is stored in the UE and which is different from the first RRC mode, wherein the first RRC mode is a RRC connected mode and the target security parameter is unused before entering the second RRC mode;
performing, when the UE is in the second RRC mode, security protection on uplink data by using the target security parameter; and
sending, when the UE is in the second RRC mode, request information and the uplink data, wherein the request information is used to request establishment or resumption of a RRC connection to the first access network node or a second access network node.