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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

Active Publication Date: 2019-12-31
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The purpose of the present invention is to provide a wireless access network notification area update method, device, terminal and base station to solve the problem of security risks in the RNAU process that does not perform anchor point transfer in the prior art

Method used

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  • Radio access network notification area updating method and device, terminal and base station
  • Radio access network notification area updating method and device, terminal and base station
  • Radio access network notification area updating method and device, terminal and base station

Examples

Experimental program
Comparison scheme
Effect test

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).

...

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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Abstract

The invention provides a wireless access network notification area updating method and device, a terminal and a base station. The radio access network notification area updating method comprises the following steps: when a terminal is in an RRC inactive state, sending an RRC recovery request to a base station, and if an RRC message fed back by the base station is received, comparing whether a first NCC value and a second NCC value are the same or not; if the first NCC value is the same as the second NCC value, deleting an access layer root key generated according to the first NCC value and other keys and security tokens generated by using the root key, and recovering a security context held before sending the RRC recovery request message to the base station; wherein the first NCC value isan NCC value in a first RRC release message received most recently before the RRC recovery request message is sent to the base station, the second NCC value is an NCC value in an RRC message fed backby the base station, and the RRC message comprises an RRC recovery message or an RRC release message. According to the scheme, the problem that in the prior art, safety risks exist in the RNAU processwithout executing anchor point transfer is solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a wireless access network notification area update method, device, terminal and base station. Background technique [0002] A new RRC (Radio Resource Control) state is defined in the New Radio (New Radio Interface, NR) network: RRCInactive (RRC inactive state). When a user terminal (UE) enters the RRC Inactive state, the network side configures a radio access network notification area (RNA) and a timer for the UE. If the user terminal is in the RNA and the timer has not expired, then the terminal can remain in the RRC Inactive state, that is, the connection is suspended, and does not perform any communication with the network side. If the network side needs to contact the terminal, it will page the terminal within the RNA. If the user terminal moves out of the RNA, or the timer expires, the terminal will initiate a radio access network notification area update (R...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04W12/08H04W36/00H04W76/27H04W76/30H04W12/084H04W12/60
CPCH04W76/27H04W76/30H04W36/0033H04W12/02H04W12/08
Inventor 周叶孙建成
Owner DATANG MOBILE COMM EQUIP CO LTD
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