A new model for packet scheduling in multihop wireless networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Algorithm 457: finding all cliques of an undirected graph
Communications of the ACM
Contention-Aware Admission Control for Ad Hoc Networks
IEEE Transactions on Mobile Computing
Impact of interference on multi-hop wireless network performance
Wireless Networks - Special issue: Selected papers from ACM MobiCom 2003
Sufficient rate constraints for QoS flows in ad-hoc networks
Ad Hoc Networks
Performance analysis of the IEEE 802.11 distributed coordination function
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
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This paper presents a theoretical estimation for idle channel time in a multi-hop environment. Idle channel time is the time proportion of a node during which the channel state is idle. Thus, it can be used to evaluate the available bandwidth. Major related work considers a cross-layer model, where the idle channel time measure is available at the MAC layer, but it is rarely implemented. Furthermore, this measure is not very flexible: it cannot differentiate the traffic's priorities and it works under the hypothesis that flows are strictly policed. Estimating instead of measuring the idle channel time prevents these drawbacks. This estimation is computed in three steps by (1) calculating the idle channel time bounds, (2) evaluating the probability of a given idle channel time value, (3) computing the expected value of this distribution and deducing the average idle channel time. We show by simulation that our estimation is accurate.