Direction-Aware Time Slot Assignment for Largest Bandwidth in Slotted Wireless Ad Hoc Networks

Jianping LI  Yasushi WAKAHARA 

Publication
IEICE TRANSACTIONS on Communications  Vol.E92-B  No.3  pp.858-866
Publication Date: 2009/03/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
ad hoc network,  QoS,  bandwidth,  time slot assignment,  TDMA, 

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Summary: 
Slotted wireless ad hoc networks are drawing more and more attention because of their advantage of QoS (Quality of Service) support for multimedia applications owing to their collision-free packet transmission. Time slot assignment is an unavoidable and important problem in such networks. The existing time slot assignment methods have in general a drawback of limited available bandwidth due to their local assignment optimization without the consideration of directions of the radio wave transmission of wireless links along the routes in such networks. A new time slot assignment is proposed in this paper in order to overcome this drawback. The proposed assignment is different from the existing methods in the following aspects: a) consideration of link directions during time slot assignment; b) largest bandwidth to be achieved; c) feasibility in resource limited ad hoc networks because of its fast assignment. Moreover, the effectiveness of the proposal is confirmed by some simulation results.