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Updating method of air key, terminal and base station

An update method and air interface key technology, applied in the field of communication, can solve the problems of air interface key update, 802.16m does not give a clear definition, etc., to achieve the effect of updating

Inactive Publication Date: 2010-01-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Due to the movement of the terminal, the identity of the base station will continue to change when switching, or when the location is updated, or when exiting the idle mode. How to update the air interface key at this time, 802.16m does not give a clear definition

Method used

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  • Updating method of air key, terminal and base station
  • Updating method of air key, terminal and base station
  • Updating method of air key, terminal and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] figure 1 is an interactive flowchart according to Embodiment 1 of the present invention, such as figure 1 As shown, it illustrates how to update the key and initiate the handover process when the terminal is handed over to the target base station. S102 to step S124 comprising the following steps:

[0064] Step S102: The terminal sends an evolved air interface handover request message (Advancd Air Interface HandOver Request, AAI_HO-REQ for short) to the serving base station to request handover. This step corresponds to the handover procedure initiated by the terminal. The message optionally carries terminal type information (such as a terminal conforming to the definition of 802.16e, or a terminal conforming to the definition of 802.16m).

[0065] Step S104: the serving base station sends a handover request message to one or more target base stations, in which the serving base station sends the relevant information of the terminal to the target base stations. The mes...

Embodiment 2

[0078] The figure of this embodiment is the same as figure 1 As shown in FIG. 1 , another process of how to update the key and initiate the handover when the terminal is handed over to the target base station is described. S102 to step S124 comprising the following steps:

[0079] Step S102: The terminal sends an evolved air interface handover request message (AAI_HO-REQ) to the serving base station to request handover. This step corresponds to the handover procedure initiated by the terminal. The message optionally carries terminal type information (such as a terminal conforming to the definition of 802.16e, or a terminal conforming to the definition of 802.16m), and / or a random number NONCE_AMS generated by the terminal.

[0080] Step S104: the serving base station sends a handover request message to one or more target base stations, in which the serving base station sends the relevant information of the terminal to the target base stations. The message carries parameters...

Embodiment 3

[0090] figure 2 is an interactive flowchart according to Embodiment 3 of the present invention, such as figure 2 As shown in FIG. 1 , another process of how to update the key and initiate the handover when the terminal is handed over to the target base station is described. The difference between this process and Embodiment 1 is that before receiving the ranging request message sent by the terminal, the target base station does not have all or part of the context information of the terminal, and the process includes the following steps S202 to S216:

[0091] Step S202: The terminal decides to initiate a handover process to the target base station, and the terminal calculates an updated AMSID according to the ABSID of the target base station * .

[0092] Step S204: The terminal uses the updated AMSID * , and / or the updated incremental CMAC_KEY_COUNT value, deduce the air interface derived keys such as the updated authorization key AK, CMAC KEYS, etc.

[0093] Step S206: t...

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Abstract

The invention discloses an updating method of an air key, a terminal and a base station. The method comprises the following step: the terminal updates a hashing computing value AMSID <*> of a terminal identification when switching or updating the position or exiting an idle mode, and the updated AMSID <*> computes authorization keys AK and message integrity protection keys CMAC KEYS and / or a traffic stream encryption keys TEK. The invention realizes the updating of the air key.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an air interface key update method, a terminal and a base station. Background technique [0002] The standards for electronic equipment formulated by the Institute of Electrical and Electronic Engineers (IEEE for short) include standards for various communication technologies. Among them, IEEE 802 mainly formulates standards in the fields of electronic engineering and computers, and is also called LAN / MAN Standards Committee (LMSC for short). The 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 (Physical Layer, PHY for short) and media access control (Media Access Control, At the same time, there are conformance tests related to the air interface protocol and coexistence specifications between different wireless access systems. According to whether it supports mobile features, IEEE 8...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W36/08H04W12/041H04W12/0433
Inventor 冯成燕甘露刘扬
Owner ZTE CORP
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