Supporting QoS with location aware pre-reservation in mobile ad hoc networks

Xiang Chen*, Wei Liu, Yuguang Fang, Maria C. Yuang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Due to MAC collisions and mobility, quality of service (QoS) provisioning in mobile ad hoc networks is very challenging. In this paper, we propose an innovative scheme to grant high priority to communications between some important nodes in TDMA based ad hoc networks. In addition to bandwidth reservation in previous QoS routing approaches, our scheme adopts a new approach: bandwidth pre-reservation. Some bandwidth is pre-reserved at intermediate nodes in a quadrangle-shaped area formed between important nodes. The key idea is to utilize each node's geographic location information and minimize potential scheduling conflicts for transmissions. In this way, time slot collisions in adjacent wireless links along a path can be reduced so that more high priority connections can be accepted into the network. Extensive simulations show that our scheme can successfully provide better communication quality at a relatively low price.

Original languageEnglish
Pages (from-to)3476-3480
Number of pages5
JournalIEEE International Conference on Communications
StatePublished - 30 Aug 2004
Event2004 IEEE International Conference on Communications - Paris, France
Duration: 20 Jun 200424 Jun 2004

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