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A new channel allocation scheme for hierarchical wireless networks
Authors:Fang-ming Zhao  Ling-ge Jiang  Chen He
Affiliation:Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Abstract:A channel allocation scheme for hierarchical wireless networks was proposed in terms of the connection-level quality of service. The channel allocation scheme was analyzed using both horizontal channel borrowing and vertical traffic overflowing. Pre-emptive priority strategies are used to classify real-time services and non-real-time services, real-time service is given higher priority for it is allowed to pre-empt channels used by non-real-time service. Some channel borrowing thresholds and acceptance ratios are used to avoid channel locking or dynamic power control, which can also be dynamically adjusted according to network load. Simula-tion results show that the proposed schemes can improve the system performance.
Keywords:channel allocation  vertical traffic overflowing  horizontal channel borrowing  pre-emptive priority  blocking probability
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