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Air Interface Key Renewal Method and Wireless Access System

An update method and interface key technology, applied in transmission systems, wireless communication, 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: 2016-03-30
ZTE CORP
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  • Description
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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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  • Air Interface Key Renewal Method and Wireless Access System
  • Air Interface Key Renewal Method and Wireless Access System
  • Air Interface Key Renewal Method and Wireless Access System

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

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Abstract

The invention discloses an air interface key update method and a wireless access system. Wherein, the method includes: the core network node receives a relocation completion indication message from the target radio network controller RNC, the relocation completion indication message indicates that the user equipment has successfully relocated from the source RNC to the target RNC; using the stored conventional The integrity key IK and the traditional encryption key CK calculate the next-hop modified intermediate key; and send the next-hop modified intermediate key to the target RNC. Through the present invention, when the SRNC migrates, the source RNC and the target RNC use different deformed intermediate keys, which ensures the forward security of the user, thereby improving the communication security of the wireless access system as a whole.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method for updating an air interface key when a SRNC (Serving Radio Network Controller, Serving Radio Network Controller) of a wireless communication system migrates, and a wireless access system. Background technique [0002] 3GPP (3rdGeneration Partnership Project, third 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") technology in Release7 to complete HSDPA (HighSpeedDownlinkPacketAccess, high-speed downlink packet access) and HSUPA (HighSpeedUplinkPacketAccess, high-speed uplink packet access) future evolution road HSPA+. HSPA+ is an enhanced technology of 3GPPHSPA (including HSDPA and HSUPA), which provides HSPA operators with a low-complexity, low-cost path for smooth ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W92/10H04W12/03H04W12/106
CPCH04L9/0891H04L63/061H04L2209/80H04W36/10H04W12/0433
Inventor 冯成燕
Owner ZTE CORP
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