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

Jianping LI  Yasushi WAKAHARA  

IEICE TRANSACTIONS on Communications   Vol.E92-B    No.3    pp.858-866
Publication Date: 2009/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.858
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
ad hoc network,  QoS,  bandwidth,  time slot assignment,  TDMA,  

Full Text: PDF>>
Buy this Article

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.