A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
On-demand multicast routing protocol in multihop wireless mobile networks
Mobile Networks and Applications
A framework for the admission control of QoS multicast traffic in mobile ad hoc networks
WOWMOM '01 Proceedings of the 4th ACM international workshop on Wireless mobile multimedia
Ad hoc QoS on-demand routing (AQOR) in mobile ad hoc networks
Journal of Parallel and Distributed Computing - Special issue on Routing in mobile and wireless ad hoc networks
On Sustained QoS Guarantees in Operated IEEE 802.11 Wireless LANs
IEEE Transactions on Parallel and Distributed Systems
Quality of service support for ODMRP multicast routing in ad hoc networks
ADHOC-NOW'07 Proceedings of the 6th international conference on Ad-hoc, mobile and wireless networks
CSMA/CA performance under high traffic conditions: throughput and delay analysis
Computer Communications
CEDAR: a core-extraction distributed ad hoc routing algorithm
IEEE Journal on Selected Areas in Communications
QoS-aware routing based on bandwidth estimation for mobile ad hoc networks
IEEE Journal on Selected Areas in Communications
Review: Review of multicast routing mechanisms in mobile ad hoc networks
Journal of Network and Computer Applications
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Since the multi-rate enhancements have been implemented in wireless ad hoc networks (MANETs), QoS-constrained multicast protocols for multimedia communication should be adapted to exploit them fully for using more efficiently the limited resources. To build a multicast tree with delay-guaranteed, one-hop delay and end-to-end delay must be known. The one-hop delay is the transmission time at a given link connecting two neighboring hosts, and the end-to-end delay is the time taken for a data packet from a specific source to reach the destination node. However, how to calculate the above two delays using the IEEE 802.11 MAC is still a challenging problem, because the radio channel is shared among neighbors. Further, the multi-rate enhancements make it more difficult since the neighboring relation among hosts is varied with the transmission rates. In this paper, we first propose a method to estimate the one-hop delay based on varied transmission rates by monitoring the sensed busy/idle ratio of shared channel. Then, by its aid, another method is proposed to compute the end-to-end delay. Finally, we integrate the above two methods with a typical multicast routing protocol, ODMRP, for constructing a delayguaranteed multicast protocol. Simulation results show that the proposed method obtains more precise one-hop delay than a very recently work. Besides, the integrated protocol provides better delay guarantee than the existing protocol when the multicast traffic has delay requirement.