Invention Grant
- Patent Title: Method for detecting a duplicate address, mobile station, network element and communication system
- Patent Title (中): 检测重复地址,移动台,网元和通信系统的方法
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Application No.: US12735351Application Date: 2008-01-14
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Publication No.: US08488557B2Publication Date: 2013-07-16
- Inventor: Fang Liu , Caixia Chi
- Applicant: Fang Liu , Caixia Chi
- Applicant Address: FR Paris
- Assignee: Alcatel Lucent
- Current Assignee: Alcatel Lucent
- Current Assignee Address: FR Paris
- Agency: Harness, Dickey & Pierce
- International Application: PCT/CN2008/000088 WO 20080114
- International Announcement: WO2009/089643 WO 20090723
- Main IPC: H04W8/26
- IPC: H04W8/26 ; H04L29/12

Abstract:
The present invention proposes a method for detecting a duplicate address, a mobile station, a network element for controlling access of a mobile station to a wide area network and a communication network comprising a mobile station and at least two network element, wherein said mobile station is moving from a second access network pertaining to a second network element into a first access network pertaining to a first network element. Said method for detecting a duplicate address comprises: the mobile station sends a request message to the first network element; the first network element generates and sends a first message to the mobile station upon reception of said request message, said first message designating an explicit address configuration and including prefix information; the mobile station checks out the explicit address configuration, generates an address based on said prefix information and sends a message containing the generated address to the first network element for indicating that the mobile station requires registering the generated address with the first network element; and the first network element creates an entry for the mobile station if the generated address is not found in its address table, or generates and sends a second message to the mobile station for indicating that the generated address is a duplicate address if it is found in its address table and discards data packets with the duplicate address sent from the mobile station.
Public/Granted literature
- US20100316019A1 METHOD FOR DETECTING A DUPLICATE ADDRESS, MOBILE STATION, NETWORK ELEMENT AND COMMUNICATION SYSTEM Public/Granted day:2010-12-16
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