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Empty password refreshing method and system for wireless communication system

An air interface key and key update technology, which is applied in wireless communication, electrical components, security devices, etc., can solve the problems of frequent re-authentication and large system resources, and achieve the effect of simplifying the key update process and saving system resources.

Active Publication Date: 2015-01-28
SUZHOU DACHENG YOUFANG DATA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the amount of data sent or received by the terminal is relatively large, frequent re-authentication is required, which is not a small overhead for system resources

Method used

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  • Empty password refreshing method and system for wireless communication system
  • Empty password refreshing method and system for wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, the air interface key update method in the wireless communication system in Embodiment 1 includes the following steps:

[0050] Step 101, the terminal or the base station judges that the air interface key update condition is satisfied;

[0051] Satisfying the air interface key update condition means: the value of the message integrity protection key counter of the authorization key reaches the maximum value of the message integrity protection key counter set by the system, or the service flow encryption key of the service flow encryption key The value of the counter reaches the maximum value of the traffic encryption key counter set by the system, or the serial number value of the uplink reaches the maximum value of the serial number set by the system, or the serial number value of the downlink reaches the system Set the maximum value of the downlink sequence number.

[0052] Satisfying the air interface key update condition can also refer t...

Embodiment 2

[0065] Such as figure 2 As shown, the air interface key update method in the wireless communication system in the second embodiment includes the following steps. The main difference between the second embodiment and the first embodiment is that the terminal and the base station do not update the AMSID* during the three-way handshake process.

[0066] Step 201, the terminal or the base station judges that the air interface key update condition is met;

[0067] One of the terminal and the base station notifies the other after judging that the air interface key update condition is met.

[0068] Satisfying the air interface key update condition means: the value of the message integrity protection key counter of the authorization key reaches the maximum value of the message integrity protection key counter set by the system, or the service flow encryption key of the service flow encryption key The value of the counter reaches the maximum value of the traffic encryption key counte...

Embodiment 3

[0080] After the value of the traffic encryption key counter of the traffic encryption key (TEK) reaches the maximum value of the traffic encryption key counter set by the system, the terminal and the base station respectively increment the value of the respective message integrity protection key counter, and The authorization key (AK) is updated by using the value of the updated message integrity protection key counter, and a new message integrity protection key and a service flow encryption key are calculated from the updated authorization key (AK). During the entire updating process, the terminal and the base station do not need to interact.

[0081] Except for the cases described in the foregoing embodiments, when the life cycle of the air interface key expires, the terminal and the network side perform an EAP re-authentication process. After the re-authentication is successfully completed, the terminal and the network side generate a new root key MSK, and then through the...

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Abstract

The invention provides an empty password refreshing method and a system for a wireless communication system. The system comprises a terminal and a base station. The terminal is used for saving the re-authentication process with the base station and refreshing the password after judging or obtaining that empty password refreshing condition is satisfied from the base station. The base station is used for saving the re-authentication process with the terminal and refreshing the password after judging or obtaining that empty password refreshing condition is satisfied from the terminal. The terminal or the base station can directly refresh the empty password through three times of handshaking after judging that the empty password refreshing condition is satisfied, so the re-authentication process is saved, the refreshing process of the password is simplified, and the system resources are saved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for updating an air interface key in a wireless communication system. Background technique [0002] The Institute of Electrical and Electronic Engineers (IEEE) 802.16 standard system is mainly aimed at the metropolitan area network, and its main goal is to develop the air interface physical layer (PHY) of the wireless access system working in the 2-66GHz (gigahertz) frequency band. ) and the medium access control layer (MAC) specification, and also involves the conformance test related to the air interface protocol and the coexistence specification between different wireless access systems. [0003] According to whether it supports mobile features, the IEEE 802.16 standard can be divided into fixed broadband wireless access air interface standards and mobile broadband wireless access air interface standards. Among them, 802.16d belongs to the fixed wirele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W88/08H04W12/041H04W12/0431
Inventor 冯成燕甘露
Owner SUZHOU DACHENG YOUFANG DATA TECH CO LTD