| 地铁环境中双网卡软切换机制的研究与应用 |
| |
| 引用本文： | 赵立芳,陈兵. 地铁环境中双网卡软切换机制的研究与应用[J]. 小型微型计算机系统, 2011, 32(3) |
| |
| 作者姓名： | 赵立芳 陈兵 |
| |
| 作者单位： | 南京航空航天大学,信息科学与技术学院,江苏,南京,210016 |
| |
| 基金项目： | 导弹控制系统国家重点实验室基金项目(9140C60040307HT08)资助 |
| |
| 摘 要： | 高速移动的无线节点在接入点间切换时,切换延迟较大、丢包率较高.在单网卡切换环境中,不可避免地存在网络中断的现象.该文结合地铁无线通信环境对切换延迟和丢包问题进行研究,为移动节点配备两块无线网卡,控制两块网卡协同工作,共同完成无线切换和数据传输.测试结果表明,双网卡软切换机制无需修改网络层及上层协议栈,在特定环境中可以实现低延迟和零丢包.该切换机制已经在地铁信号系统国产化预研项目中得到应用.
|
| 关 键 词： | 无线局域网 切换 延迟 丢包率 |
Research and Application of Dual-NIC Soft Handoff Scheme in Subway Wireless System |
| |
| ZHAO Li-fang,CHEN Bing. Research and Application of Dual-NIC Soft Handoff Scheme in Subway Wireless System[J]. Mini-micro Systems, 2011, 32(3) |
| |
| Authors: | ZHAO Li-fang CHEN Bing |
| |
| Affiliation: | ZHAO Li-fang,CHEN Bing(College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
| |
| Abstract: | Mobile Mode performs a handoff whenever it moves out of the range of one access point and tries to connect to another one.The delay and losing packets caused by handoff process affect the network QoS.Taking subway wireless communication system as an application scenario,MN was settled double wireless NICs,which are controlled work together to complete data transmission and handoff.The result shows that this scheme can decrease the scan delay effectively,and the packet loss rate can reduced to zero in specif... |
| |
| Keywords: | WLAN handoff delay packet loss rate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
