An adaptive hold-off algorithm in WiMAX mesh networks with coordinated distributed scheduling

Author

Tabarsi, Termeh ; Khorsandi, Siavash

Author_Institution

Comput. Eng. & IT Dept., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2011

fDate

24-26 May 2011

Firstpage

1

Lastpage

5

Abstract

IEEE 802.16 mesh mode is positioned to be used as a wireless backbone network. In coordinated distributed scheduling (C-DSCH), when nodes transmit control messages to compete for channel access, they need to wait for some period of time called hold-off time to compete again. Network performance is sharply affected by the hold-off mechanism in the bandwidth reservation procedure. In this paper, a new approach to adaptively adjust the hold-off time is developed considering nodes´ condition in every transmission opportunity. The proposed algorithm takes both the number of nodes in contention and the buffer sizes of the nodes into account. Delay, throughput and control messages overhead are analyzed through simulation.bandwidth reservation procedure.

Keywords

WiMax; scheduling; wireless mesh networks; C-DSCH; IEEE 802.16 mesh mode; WiMax mesh networks; adaptive hold-off algorithm; coordinated distributed scheduling; network performance; wireless backbone network; Bandwidth; Delay; Heuristic algorithms; IEEE 802.16 Standards; Mesh networks; Simulation; Throughput; IEEE 802.16 mesh mode; distributed scheduling; hold-off algorithm; wireless mesh network;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks (WOCN), 2011 Eighth International Conference on

Conference_Location

Paris

ISSN

Pending

Print_ISBN

978-1-4577-0262-4

Type

conf

DOI

10.1109/WOCN.2011.5872956

Filename

5872956