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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.

Inactive Publication Date: 2010-09-15
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0011] The main purpose of the present invention is to provide an air interface key update method and a wireless access system to solve the problem in the related art that the communication security cannot be guaranteed because the key is not updated when the SRNC migrates

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  • Update method of air interface key and radio access system
  • Update method of air interface key and radio access system
  • Update method of air interface key and radio access system

Examples

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Embodiment Construction

[0036] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0037] SRNC migration involved in the wireless access system using UTRAN, such as image 3 and Figure 4 As shown, core network nodes (SGSN or MSC / VLR), source RNC, target RNC, Node B and UE are involved. In the wireless access system adopting HSPA+, Node B+ can be regarded as the combination of Node B and RNC. The two are a physical entity, but they are still two different logical entities. It should be noted that the Node B+ supporting the HSPA+ key hierarchy in the embodiment of the present invention may also be equivalent to an upgraded RNC (RNC+) in the UMTS, and the SRNC in the embodiment of the present invention is equivalent to the source RNC (source Node B+), The DRNC is equivalent to the...

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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.

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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Application Information

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IPC IPC(8): H04W12/04H04W92/10H04W12/03H04W12/106
CPCH04L2209/80H04W12/04H04L63/061H04W36/10H04L9/0891H04W12/0433
Inventor 冯成燕
Owner ZTE CORP
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