An efficient admission control model based on dynamic link scheduling in wireless mesh networks

作者：Dromard Juliette^*; Khoukhi Lyes; Khatoun Rida

来源：EURASIP Journal on Wireless Communications and Networking, 2013, 288.

DOI：10.1186/1687-1499-2013-288

• Wireless mesh networks
• Admission control
• Link scheduling

Wireless mesh networks (WMNs) are a very attractive new field of research. They are low cost, easily deployed, and a high-performance solution to last-mile broadband Internet access. In WMNs, admission control (AC) is one of the key traffic management mechanisms that should be deployed to provide quality of service (QoS) support for real-time traffic.
In this paper, we introduce a novel admission control model, based on bandwidth and delay parameters, which integrates a dynamic link scheduling scheme. The proposed model is built on two different methods to access the medium: on a contention-based channel access method for control packets and on a dynamic time division multiple access (DTDMA) for data packets. Each time a new flow is admitted in the network, the WMN's link scheduling is modified according to the flows' requirement and network conditions while respecting the signal-to-interference-plus-noise ratio (SINR); this allows establishing collision-free transmissions.
Using extensive simulations, we demonstrate that our model achieves high resource utilization by improving throughput, establishing collision-free transmission, as well as respecting requirements of admitted flows in terms of delay and bandwidth.

• 出版日期2013-12-20