应急通信系统中快速二层切换协议的设计与实现

doi:10.11959/j.issn.1000-436x.2017260

Abstract

Abstract:

Immobility,limited bandwidth and poor support to real-time service are common shortcomings in traditional emergency communication system.Moreover,the data transmission speed is highly limited in high-speed services by the long handoff delay and fixed handoff trigger threshold when the mobile terminals moving between network nodes.In order to overcome these shortcomings,a new emergency communication system with multifrequency hierarchical clustering structure was designed.A new layer-II fast handoff protocol was designed for such network structure to deal with handoff issue in real-time services.In this handoff protocol,the handoff trigger threshold is self-adaption based on the moving velocity of mobile terminals.

Key words: emergency communication, layer-II fast handoff, rate adaptation

CLC Number:

TP393

Fang-min LI,Le ZENG,Yi SHEN,Tao ZHANG. Design and implementation of a layer-II fast handoff protocol in emergency communication system[J]. Journal on Communications, 2017, 38(Z2): 8-16.

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References 17

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切换方式	切换时分组丢失率	非切换时分组丢失率	总分组丢失率
传统切换方式	59.38%	0.63%	9.14%
本文切换方式	0	0.75%	0.64%
文献[16]	—	—	6%
文献[15]	—	—	0%

Design and implementation of a layer-II fast handoff protocol in emergency communication system

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