HMCA_(wsn)- A hybrid multi-channel allocation method for erratic delay constraint WSN applications

摘要

Increasing throughput and meeting high packet delivery ratio demands in delay constraint Wireless Sensor Network (WSN) applications have triggered the use of hybrid multi radio and multichannel communication techniques. There are many works in literature on such classical techniques which are deployed in wireless structured networks like IEEE 802.11. Indeed, they cannot be directly utilized for wireless sensor devices due to energy, memory, radio and processor constraints. A number of protocols have been recently proposed to utilize multichannel communication techniques designed for WSNs. However, there is still a high demand of contribution for designing new channel allocation approaches for multi radio and multichannel communication to meet emerging WSN requirements. In this paper, we propose a new multichannel allocation approach, named Hybrid Multi-Channel Allocation for WSNs (HMCA(WSN)), based on hybrid Time Division Multiple Access (TDMA)-Frequency Division Multiple Access (FDMA) techniques and using dual radio with multichannel communication. A detailed simulation study indicates significant improvement on average and end-to-end delay results while keeping the sensor node energy consumptions at reasonable levels. Compared to its traditional and contemporary counterparts, the proposed HMCA(WSN) assures steady and high packet delivery ratios in large scale networking environments even with hundreds of sensor nodes.