Radio access network notification area updating method and device, terminal and base station
A technology of wireless access network and regional update, applied in the field of communication
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example 1
[0140] Example 1: Periodic wireless access network area update process, the terminal is connected to the original node (anchor node); for example Figure 8 As shown, the specific process includes:
[0141]Step 81: Node A in the radio access network owns the context of the mobile terminal and is the anchor node of the terminal. Node A sends an RRC release message to the terminal, and the RRC release message includes suspendConfig information to instruct it to enter (or maintain) the RRC Inactive state. The suspendConfig information contains an NCC value.
[0142] Step 82: The terminal initiates a radio access network notification area update (RNAU) process for some reason, and sends an RRC recovery request message to node A, which indicates that the reason is RNAU. Then the terminal generates a new access stratum key according to the NCC value included in step 81 and the current cell information (the cell information corresponding to the currently connected base station).
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example 2
[0146] Example 2: Periodic wireless access network area update process, the terminal is connected to other nodes (other than the anchor node); for example Figure 9 As shown, the specific process includes:
[0147] Step 91: Node A in the radio access network owns the terminal context and is the anchor node of the terminal. Node A sends an RRC release message to the terminal, and the RRC release message includes suspendConfig information to instruct it to enter (or maintain) the RRC Inactive state. The suspendConfig information contains an NCC value.
[0148] Step 92: After the terminal moves to Node B, it initiates a radio access network notification area update (RNAU) process for some reason, and sends an RRC recovery request message to Node B, which indicates that the reason is RNAU. Then the terminal generates a new access stratum key according to the NCC value included in step 91 and the current cell information (the cell information corresponding to the currently connec...
example 3
[0154] Example 3: During the RRC recovery process, the terminal connects to the original node (anchor node) and enters the connection state; for example Figure 10 As shown, the specific process includes:
[0155] Step 101: Node A in the radio access network owns the terminal context and is the anchor node of the terminal. Node A sends an RRC release message to the terminal, and the RRC release message includes suspendConfig information to instruct it to enter (or maintain) the RRC Inactive state. The suspendConfig information contains an NCC value.
[0156] Step 102: The terminal initiates an RRC recovery process for some reason, and sends an RRC recovery request message to node A. Then the terminal generates a new access stratum key according to the NCC value included in step 101 and current cell information (cell information corresponding to the currently connected base station).
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