Improvement of Handoff Latency by GPS Based Handoff Technique

D. Sarddar, S. Chatterjee, R. Jana, Mandovi Mukherjee, Sreya Mallik, U. Biswas, M. Naskar
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引用次数: 2

Abstract

Presently IEEE 802.11b based wireless networks are being widely used in various fields like personal as well as business applications. Handoff is a critical issue in IEEE 802.11b based wireless networks. When a mobile node (MN) moves away from the range of its current access point (AP) it needs to perform a link layer handoff. This causes data loss and interruption in communication. According to IEEE 802.11b link layer2 (L2) handoff consists of three phases – scanning, authentication and re-association. Scanning process delay is 90% of the total handoff delay. So in this paper we propose a better scanning mechanism to reduce handoff latency. Using GPS we determine the direction of velocity of the MN as well as position. It reduces the time to find the closest and best AP among all neighbor APs. This process effectively reduces the handoff latency.
基于GPS的切换技术改善切换延迟
目前,基于IEEE 802.11b的无线网络正广泛应用于个人和商业应用等各个领域。切换是基于IEEE 802.11b的无线网络中的一个关键问题。当移动节点(MN)离开其当前接入点(AP)的范围时,它需要执行链路层切换。这会导致数据丢失和通信中断。根据IEEE 802.11b的链路二层(L2)协议,切换包括三个阶段:扫描、认证和重新关联。扫描过程延迟是总切换延迟的90%。因此,本文提出了一种更好的扫描机制来减少切换延迟。利用GPS,我们确定了MN的速度方向和位置。它减少了在所有邻居AP中找到最接近和最佳AP的时间。这个过程有效地减少了切换延迟。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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