Method and apparatus for establishing rrc connection

A base station for establishing a radio resource control RRC connection, comprising:

• a processor, configured to determine that user equipment UE needs to switch from an RRC connected mode to an RRC idle mode, and determine that a simplified RRC process is used when the UE establishes a next RRC connection, wherein the simplified RRC process refers to establishing an RRC connection by using acquired RRC configuration information of the UE, wherein
• the processor is further configured to:
• when the UE requests to establish a next RRC connection, establish an RRC connection for the UE by using the simplified RRC process.

User equipment (UE) for establishing a radio resource control (RRC) connection, comprising:

• a receiver, configured to receive a first RRC connection setup message sent by a base station, wherein the first RRC connection setup message is used to instruct the UE to establish an RRC connection by using a simplified RRC process, wherein the simplified RRC process refers to establishing an RRC connection by using acquired RRC configuration information of the UE;
• and
• a processor, configured to establish an RRC connection by using the simplified RRC process.