中文

Journal of Applied Sciences >

2011 , Vol. 29 >Issue 4: 374 - 380

DOI: https://doi.org/10.3969/j.issn.0255-8297.2011.04.007

Communication Engineering

Context Transfer Mechanism of Header Compression During Predictive Handover

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  • Institute of Information and Network Technology, Nanjing University of Posts and Telecommunications,
    Nanjing 210003, China
张载龙，博士，副研究员，研究方向：异构泛在无线移动网络关键技术，E-mail: zlzhang@njupt.edu.cn

Received date: 2010-09-26

  Revised date: 2011-01-18

  Online published: 2011-07-30

Supported by

国家“863”高技术研究发展计划基金(No.2009AA01Z212, No.200901Z202)；国家自然科学基金(No.61003237, No.70871061)；
南京邮电大学校科研基金(No.NY210012)资助

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Abstract

We study context transfer mechanism to reduce large overhead in re-establishing context of header
compression, and propose a two-step method for context transfer of header compression and a real-time trigger
strategy for context transfer using link-layer trigger. The proposed approach avoids the expensive process of
context re-establishment of header compression by transferring header compression context when handovers
are required. The handover delay, packet loss and state migration of header compression with and without
context transfer of header compression are evaluated with NS2. Simulation results show that the method can
establish and synchronize context at the compressor and decompressor so as to reduce the handover impact on
header compression.

Key words： mobile IPv6, header compression, context transfer, seamless handover, link-layer trigger

Cite this article

ZHANG Zai-long, XU Xiao-fei, SUN Yan-fei . Context Transfer Mechanism of Header Compression During Predictive Handover[J]. Journal of Applied Sciences, 2011 , 29(4) : 374 -380 . DOI: 10.3969/j.issn.0255-8297.2011.04.007

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