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Design and Performance Evaluation of a New SR-ARQ with an Adaptive Timer and Delayed NAK for Improving Handover Performance in Next-Generation Mobile Communication Networks  

Park, Man-Kyu (Chungnam National University)
Choi, Yun-Chul (Chungnam National University)
Lee, Jae-Yong (Chungnam National University)
Kim, Byung-Chul (Chungnam National University)
Kim, Dae-Young (Chungnam National University)
Kim, Jae-Ho (ETRI)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.1, 2009 , pp. 48-59 More about this Journal
Abstract
Next generation mobile communication system will have various access networks and provide seamless multimedia data service to mobile nodes. The WiNGS system, one of these access network, has superior RAT(Radio Access Technology) and network connectivity other than previous ones. In this paper, we propose link-layer SR-ARQ between mobile node and WAGW to solve packet re-ordering problem during handover. In the proposed scheme, we apply the adaptive timer at the SR-ARQ sender to reduce unnecessary packet retransmission during handoff and delayed NAK algorithm at the SR-ARQ receiver for delaying NAK response due to temporary out-of-sequenced frames. We evaluate the performance of the proposed scheme by implementing the new SR-ARQ protocol at the link-layer using ns-2 simulator, and show the handover performance is improved greatly by preventing unnecessary retransmission.
Keywords
Handover; SR-ARQ; ns-2 Simulation; WiNGS; Mobile Communication System;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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