Method for establishing safety mode and radio network controller

Abstract

The invention discloses a method for establishing a safety mode, comprising the following steps: locking the information confirming function of a radio link controller (RLC) of a radio network controller (RNC) to user equipment (UE) after a radio resource controller (RRC) of the RNC confirms that safety mode control information is successfully transmitted to the UE; transmitting safety mode finishing information to the RNC in a confirming mode after the integral protecting inspection of the safety mode control information is passed by the UE, and carrying out the integral protecting inspectionon the information after the RRC of the RNC receives the safety mode finishing information. If the integral protection fails, after a district update request of the UE is received, RRC connection release information is transmitted to the UE for notifying the UE to release the RRC connection. The method can avoid repeatedly transmitting the RRC CONNECTION RELEASE information because a network sidecannot obtain the confirmation of the connection release of the UE side, so that the signaling connection cannot be released to get into deadlock.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for establishing a security mode and a wireless network controller. Background technique [0002] In the third-generation mobile communication network, with the increase of data volume and business types, the requirements for communication security are getting higher and higher. Compared with 2G, 3G not only retains the core network's user authentication and data encryption and decryption, but also derives the user's core network authentication and local authentication (integrity protection). [0003] The local authentication mechanism uses an integrity algorithm (f9) to protect the integrity of the RRC (Radio Resource Control) layer signaling to prevent the signaling from being intercepted or tampered with, thereby ensuring the security of the signaling. The principle of integrity protection is that the sender inputs the code stream and other parameters ...

AI Technical Summary

Problems solved by technology

[0021] The technical problem to be solved by the present invention is to provide a method for establishing a security mode and a radio network controller to solve the problem that the UE side and the network side determine that the security mode is successfully established due to different timing and conditions, and the UE side considers that the security mode is successfully established while the network side In the case that the establishment of the security mode fails, the integrity protection startup status of both parties is inconsistent, resulting in the inability to continue communication and falling into a deadlock problem

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