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Indexed by:期刊论文

Date of Publication:2011-01-01

Journal:Journal of Software

Included Journals:Scopus

Volume:6

Issue:12 SPEC. ISSUE

Page Number:2434-2440

ISSN No.:1796217X

Abstract:Congestions in wireless sensor networks (WSNs) could potentially cause packet loss, throughput impairment and energy waste. To address this issue, a hop-by-hop crosslayer congestion control scheme (HCCC) built on contention-based MAC protocol is proposed in this paper. According to MAC-layer channel information including buffer occupancy ratio and congestion degree of local node, HCCC dynamically adjusts channel access priority in MAC layer and data transmission rate of the node to tackle the problem of congestion. Simulations have been conducted to compare HCCC against closely-related existing schemes. The results show that HCCC exhibits considerable superiority in terms of packets loss ratio, throughput and energy efficiency. ? 2011 Academy Publisher.