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一种蓝牙网络接入点快速切换机制
引用本文:林鸿,丁文芳,高强. 一种蓝牙网络接入点快速切换机制[J]. 计算机研究与发展, 2003, 40(10): 1458-1463
作者姓名:林鸿  丁文芳  高强
作者单位:1. 中国科学院软件研究所,北京,100080
2. 北京科学技术大学计算机科学系,北京,100083
基金项目:国家自然科学基金重点项目 ( 6983 3 0 3 0 )
摘    要:蓝牙网络接人点切换问题是蓝牙技术广泛应用过程中亟待解决的关键课题,而蓝牙本身特点给接人点快速切换研究和实现带来挑战.提出了一种新的由接人点控制的反向软切换机制,实现了蓝牙接人点快速切换.接人点实时监测同移动点间的链路,根据距离和链路质量计算出切换判断值.当这个值超过某个阈值后,接人点预先在它的邻近接人点中搜索一个最佳候选接人点.当值继续超过另一个阈值后,移动点切换到新接人点.虚拟切换环境的仿真结果说明,这种切换机制能在很短时间内完成切换过程.

关 键 词:蓝牙 网络接入点 快速切换

A Fast Handoff Mechanism for Bluetooth Network Access Points
LIN Hong ,DING Wen Fang ,and GAO Qiang. A Fast Handoff Mechanism for Bluetooth Network Access Points[J]. Journal of Computer Research and Development, 2003, 40(10): 1458-1463
Authors:LIN Hong   DING Wen Fang   and GAO Qiang
Affiliation:LIN Hong 1,DING Wen Fang 2,and GAO Qiang 1 1
Abstract:The handoff for Bluetooth network access points is a critical issue before Bluetooth technology is applied widely The special characteristics of Bluetooth technology present great challenges in studying and implementing fast handoff of access points Presented in this paper is an innovative backward soft handoff mechanism controlled by access point to realize fast handover The access point supervises the link between itself and the mobile point in real time and calculates the value to determine handover according to the distance and the link quality While the value is more than one threshold, the access point searches in advance for the optimal candidate from its neighborhood While the value continues to surmount another threshold, the mobile point is switched to a new access point Deducing from the simulations of the virtual handoff scenarios, it validates that the scheme finishes the handoff procedure in a very short time
Keywords:Bluetooth  network access point  fast handoff  
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