Method for generating group key and associated device

A technology of group keys and equipment, applied in the field of communication, can solve the problems of too many keys, increasing the complexity of base station operation, affecting the performance of base stations, etc.

Active Publication Date: 2013-05-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, at the base station, it is necessary to maintain their respective keys for each MTC device in the same group, which increases the complex

Method used

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  • Method for generating group key and associated device
  • Method for generating group key and associated device
  • Method for generating group key and associated device

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] First, combine figure 1 , to describe a method 100 for generating a group key according to an embodiment of the present invention.

[0037] Such as figure 1 As shown, method 100 includes:

[0038] In S110, obtain the group ID of the group where the MTC device is located;

[0039]In S120, obtain a group communication root key corresponding to the group ID;

[0040] In S130, generate a group key corresponding to the group ID according to the group commu...

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Abstract

The invention provides a method for generating a group key and an associated device. The method comprises obtaining the group identification (ID) of the group which a machine-type communication (MTC) device is in, obtaining a group communication root key corresponding to the group ID, generating a group key corresponding to the group ID according to the group communication root key, sending the group key encrypted by an access stratum of the MTC device to the MTC device, so that the MTC device can obtain the group key by deciphering according to the key of the access stratum of the MTC device. According to the technical scheme, a base station can distribute the group key corresponding to the group which the MTC device is in to the MTC device, so that the MTC devices in the same group can conduct a group communication normally by means of the same group key, and the same group key is only needed keeping for the same group in the base station. Thus the complexity of the base station operation is reduced, the number of the keys for base station maintenance and management is reduced and performance of the base station is improved.

Description

technical field [0001] The present invention relates to the field of communication, and more particularly, to a method and related equipment for generating a group key in the field of communication. Background technique [0002] Machine to Machine (M2M) technology is the integration of wireless communication and information technology, which means that machines can communicate directly without human intervention. There are many types of M2M applications, including automatic instrumentation, remote monitoring, industrial safety and ship automation, payment systems, and vehicle remote control. [0003] There are three modes of M2M, including machine-to-machine, machine-to-mobile and mobile-to-machine. In M2M, M2M devices can access the network through long-distance connection technology and short-distance connection technology. The long-distance connection technology involved includes Global System for Mobile Communications (GSM), General Packet Radio Service (General Packet ...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04W24/02H04W88/08H04W4/70H04W12/041
CPCH04W4/08H04L63/065H04W12/04H04L63/062H04W88/08H04W4/70H04W12/0431H04W12/041
Inventor 张丽佳陈璟许怡娴
Owner HUAWEI TECH CO LTD
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