Update method of air interface key and radio access system

An update method and interface key technology, applied in transmission systems, wireless communications, digital transmission systems, etc., can solve the problem that communication security cannot be guaranteed, and achieve the effect of improving communication security and ensuring forward security.
CN101835151AInactive Publication Date: 2010-09-15ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2010-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an update method of an air interface key and a radio access system, wherein the method comprises the following steps: a core network node receives a relocation completion indicating message of a target radio network controller (RNC); the relocation completion indicating message indicates that user equipment is relocated from a source RNC to a target RNC successfully; the stored traditional integrity key (IK) and the traditional cipher key (CK) are used for computing a next hop deformation intermediate key; and the next hop deformation intermediate key is sent to the target RNC. By the invention, when the SRNC is relocated, the source RNC and the target RNC use different deformation intermediate keys, thus guaranteeing the forward safety of a user, and integrally improving the communication safety of the radio access system.
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Description

technical field

[0001] The present invention relates to the field of wireless communication, in particular, to a method for renewing an air interface key during SRNC (Serving Radio Network Controller, Serving Radio Network Controller) migration of a wireless communication system and a wireless access system. Background technique

[0002] 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) adopted Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, referred to as "OFDM") and Multiple-Input Multiple-Output (Multiple-Input Multiple-Output, referred to as "MIMO") in Release7. ”) technology to complete the future evolution road HSPA+ of HSDPA (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access) and HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access). HSPA+ is an enhanced technology of 3GPP HSPA (including HSDPA and HSUPA), providing HSPA operators with a low-complexity, lo...

Claims

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