A QoS enabled MAC protocol for multi-hop ad hoc wireless networks

Author

Ying, Zhou ; Ananda, A.L. ; Jacob, Lillykutty

Author_Institution

Dept. of Comput. Sci., Nat. Univ. of Singapore, Singapore

fYear

2003

fDate

9-11 April 2003

Firstpage

149

Lastpage

156

Abstract

A medium access control (MAC) technique for multi-hop wireless networks with quality of service (QoS) assurance is introduced The proposed protocol deals with most of the hidden node problems in a multi-hop environment and also provides service differentiation for various types of traffic: real-time constant bit rate (CBR) traffic, real-time variable bit rate (VBR) traffic, and non-real-time datagram traffic, by guaranteeing bounded delay for real-time traffic, at the same time avoiding lockout of datagram traffic. It uses a distributed mechanism of scheduling and reserving the channel access for real-time sessions. Transmission of datagram or starting packet of a new realtime session is granted only after checking the reservation such that they do not affect the scheduled ongoing real-time sessions. The protocol has been implemented and tested using the VINT Network Simulator 2 (NS2). The performance evaluation and comparison confirm the improved QoS features and multimedia support compared to various existing QoS enabled MAC protocols.

Keywords

access protocols; ad hoc networks; delays; quality of service; scheduling; telecommunication traffic; QoS enabled MAC protocol; bounded delay; hidden node problem; lockout; medium access control; multi-hop ad hoc wireless networks; multi-hop wireless networks; nonreal-time datagram traffic; quality of service; real-time CBR traffic; real-time VBR traffic; real-time traffic; scheduling; service differentiation; Access protocols; Bit rate; Communication system traffic control; Delay effects; Media Access Protocol; Quality of service; Spread spectrum communication; Telecommunication traffic; Wireless application protocol; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Performance, Computing, and Communications Conference, 2003. Conference Proceedings of the 2003 IEEE International

ISSN

1097-2641

Print_ISBN

0-7803-7893-8

Type

conf

DOI

10.1109/PCCC.2003.1203694

Filename

1203694