[1]谢婉君,贾濡. Linux内核移动性支持机制与实现[J].计算机技术与发展,2015,25(03):103-107.
　XIE Wan-jun,JIA Ru. Mechanism of Mobility Support in Linux Kernel and Its Implementation[J].,2015,25(03):103-107.
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 Linux内核移动性支持机制与实现()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
25
期数:
2015年03期
页码:
103-107
栏目:
智能、算法、系统工程
出版日期:
2015-03-10

文章信息/Info

Title:
 Mechanism of Mobility Support in Linux Kernel and Its Implementation
文章编号:
1673-629X（2015)03-0103-05
作者:
 谢婉君; 贾濡
 北京交通大学 电子信息工程学院
Author(s):
 XIE Wan-jun; JIA Ru
关键词:
 ; Linux内核; IP地址; 定时器; 通知链; 移动性
Keywords:
 ; Linux kernel; IP address; timer; notification chain; mobility
分类号:
TP301
文献标志码:
A
摘要:
 随着信息技术的高速发展及移动终端的普及，用户期望网络能够在任何时间、任何地点，以任何方式提供信息服务。为了更好地支持移动性，业界提出移动IP、身份位置分离机制、SIP等多种方案。然而，它们都不能同时支持主机移动性和服务移动性。文中提出的移动性支持机制是在Linux内核中，利用一体化网络中的连接标识管理服务，在协议栈中同时支持终端和服务的移动性。首先，提出了两种内核中快速捕获IP地址更新的机制；然后，修改Linux内核中的套接字，实现IP地址改变但连接保持的目标，从而实现移动性；最后通过比较两种机制在实现移动性上的时延，选择了内核通知链机制作为移动性支持机制。
Abstract:
 With the rapid development of communication technology and the widespread of portable terminal devices,the users require that the Internet can provide access service at any time,in any location,and by all means. In order to support mobility,the community has pro-posed a few schemes such as Mobile IP,SIP and Identifier/Locator separation. However,none of them can support host mobility and serv-ice mobility at the same time. It has proposed a solution to support both host mobility and service mobility in this paper,which is realized by using the CID ( Connection IDentifier) in the universal network to manage connections. Firstly,come up with two mechanisms to real-ize quick access to updated IP addresses in Linux kernel. Secondly,modify the API socket created by the system when a connection is es-tablished between a client and a server,so that the connection keeps unchanged,regardless of the change of IP addresses. At last,after comparing and analyzing,choose the latter as the support proposal in mobility.

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更新日期/Last Update: 2015-05-04