Time slot assignment algorithms for reducing upstream latency in IEEE 802.16j networks

Shimpei Tanaka, Go Hasegawa, Yoshiaki Taniguchi, Hirotaka Nakano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In IEEE 802.16j wireless multihop networks, transmission latency from relay nodes to a gateway node is one of the important performance metrics. The transmission latency is mainly affected by a scheduling delay at every relay node, which is determined by algorithms for assigning time slots to wireless links between relay nodes. In this paper, we propose 2 kinds of time slot assignment algorithms for upstream wireless links in IEEE 802.16j multihop networks. One of the proposed algorithms assigns time slots considering the hop count from a gateway node, and the other takes the path from the relay node to the gateway node into account. We evaluated the performance of the proposed algorithms through simulation experiments and confirmed that our algorithms can decrease the upstream latency by up to 15% compared with the existing method, without increasing the average transmission latency of the entire network.

Original languageEnglish
Title of host publicationAICT 2011 - 7th Advanced International Conference on Telecommunications
Pages6-11
Number of pages6
Publication statusPublished - 2011
Externally publishedYes
Event7th Advanced International Conference on Telecommunications, AICT 2011 - St. Maarten
Duration: 2011 Mar 202011 Mar 25

Publication series

NameAICT 2011 - 7th Advanced International Conference on Telecommunications

Conference

Conference7th Advanced International Conference on Telecommunications, AICT 2011
CitySt. Maarten
Period11/3/2011/3/25

Keywords

  • IEEE 802.16j
  • Latency
  • Time slot
  • Upstream
  • Wireless multihop network

ASJC Scopus subject areas

  • Computer Networks and Communications

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