Design and Evaluation of iMesh: An Infrastructure-Mode Wireless Mesh Network
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
IEEE 802.11 handoff latency improvement using Fuzzy Logic
Wireless Communications & Mobile Computing
QoS issues in the converged 3G wireless and wired networks
IEEE Communications Magazine
An Efficient IEEE 802.11 ESS Mesh Network Supporting Quality-of-Service
IEEE Journal on Selected Areas in Communications
Performance Optimizations for Deploying VoIP Services in Mesh Networks
IEEE Journal on Selected Areas in Communications
Channel switching control policy for wireless mesh networks
Journal of Parallel and Distributed Computing
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IEEE 802.11 wireless networks utilize a hard handoff scheme when a mobile station is travelling from one area of coverage to another within a transmission duration. When the station is running a real-time multimedia application receiving data from the wireless network, in each pair of neighboring MAPs, contention scheme is used to transmit data. The latency for successfully transmitting data is seriously lengthened so that the deadlines of data frames are missed with high probabilities. In this paper, we propose a fuzzy-based cross-layer transmission (FCLT) scheme with QoS considerations for IEEE 802.11 mesh wireless networks, which utilizes the grey model and the fuzzy theorem. In the handoff procedure, some ratio of real-time data frames will be relayed to the next MAP based on received signal strength indication of PHY layer and contention window of MAC layer, which can meet the minimal QoS requirements. By utilizing FCLT, the ratios of data frames missing deadlines will be significantly improved to meet timing requirements for real-time multimedia applications. We develop a simulation model to investigate the performance of FCLT. The capability of the proposed scheme is evaluated by a series of experiments, for which we have encouraging results.