Simplified Hybrid Routing Protocol in Low Complexity ZigBee Network
The hierarchical routing protocol (HRP) and Z-AODV routing are two options in ZigBee networks. However, the advantages of them, such as the simplicity in HRP and the global shortest path in Z-AODV, are alternative. In this paper, we propose a simplified hybrid routing protocol (SHRP) in low complexity ZigBee networks. The prevailing wisdom regarding the organization of wireless networks assumes unicasting in every hop; however, it is against the nature of broadcasting in wireless channel. Considering the low data rate and node mobility in ZigBee networks, we design a data transmission mechanism which is based on rebroadcasting to achieve the simplification and high efficiency simultaneously. As a cross layer protocol, some modifications have also been made in ZigBee specification. The simulation results show that, compared with original ZigBee routings, SHRP have better performance in lower network load and end to end delay.
KeywordsZigBee routing Hybrid routing Rebroadcasting Cross layer protocol
The work in this paper is funded by Doctoral Scientific Foundation of Tianjin Normal University (52XB1106).
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