Rate adaptive mechanism with congestion awareness of DCF protocol in ad hoc networks

Lei Lei; Jin Hua Zhou; Ying Feng Zhu; Wei Kang Liu

doi:10.3969/j.issn.0255-8297.2012.01.006

Rate adaptive mechanism with congestion awareness of DCF protocol in ad hoc networks

Lei Lei^*, Jin Hua Zhou, Ying Feng Zhu, Wei Kang Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We show why the carrier sense mechanism defined in IEEE 802.11DCF protocol does not support adaptive multi-rate transmissions in a physical layer, and study the congestion problem in high speed and heavy loaded multi-hop ad hoc networks. We then propose a rate adaptive mechanism with congestion awareness of DCF protocol to overcome the congestion problem. According to the channel condition, the receiver can choose the highest feasible transmission rate, and sends its chosen rate value and congestion information back to the sender. Based on the feedback information from the receiver, the sender can decide whether to transmit data packets or not. Simulation results show that the proposed protocol can effectively solve the congestion problem, and significantly improve the overall throughput of the network.

Original language	English
Pages (from-to)	31-38
Number of pages	8
Journal	Yingyong Kexue Xuebao/Journal of Applied Sciences
Volume	30
Issue number	1
DOIs	https://doi.org/10.3969/j.issn.0255-8297.2012.01.006
Publication status	Published - Jan 2012
Externally published	Yes

Keywords

Ad hoc networks
Congestion awareness
DCF protocol
Multi-rate

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10.3969/j.issn.0255-8297.2012.01.006

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title = "Rate adaptive mechanism with congestion awareness of DCF protocol in ad hoc networks",

abstract = "We show why the carrier sense mechanism defined in IEEE 802.11DCF protocol does not support adaptive multi-rate transmissions in a physical layer, and study the congestion problem in high speed and heavy loaded multi-hop ad hoc networks. We then propose a rate adaptive mechanism with congestion awareness of DCF protocol to overcome the congestion problem. According to the channel condition, the receiver can choose the highest feasible transmission rate, and sends its chosen rate value and congestion information back to the sender. Based on the feedback information from the receiver, the sender can decide whether to transmit data packets or not. Simulation results show that the proposed protocol can effectively solve the congestion problem, and significantly improve the overall throughput of the network.",

keywords = "Ad hoc networks, Congestion awareness, DCF protocol, Multi-rate",

author = "Lei Lei and Zhou, {Jin Hua} and Zhu, {Ying Feng} and Liu, {Wei Kang}",

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AU - Lei, Lei

AU - Zhou, Jin Hua

AU - Zhu, Ying Feng

AU - Liu, Wei Kang

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N2 - We show why the carrier sense mechanism defined in IEEE 802.11DCF protocol does not support adaptive multi-rate transmissions in a physical layer, and study the congestion problem in high speed and heavy loaded multi-hop ad hoc networks. We then propose a rate adaptive mechanism with congestion awareness of DCF protocol to overcome the congestion problem. According to the channel condition, the receiver can choose the highest feasible transmission rate, and sends its chosen rate value and congestion information back to the sender. Based on the feedback information from the receiver, the sender can decide whether to transmit data packets or not. Simulation results show that the proposed protocol can effectively solve the congestion problem, and significantly improve the overall throughput of the network.

AB - We show why the carrier sense mechanism defined in IEEE 802.11DCF protocol does not support adaptive multi-rate transmissions in a physical layer, and study the congestion problem in high speed and heavy loaded multi-hop ad hoc networks. We then propose a rate adaptive mechanism with congestion awareness of DCF protocol to overcome the congestion problem. According to the channel condition, the receiver can choose the highest feasible transmission rate, and sends its chosen rate value and congestion information back to the sender. Based on the feedback information from the receiver, the sender can decide whether to transmit data packets or not. Simulation results show that the proposed protocol can effectively solve the congestion problem, and significantly improve the overall throughput of the network.

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Rate adaptive mechanism with congestion awareness of DCF protocol in ad hoc networks

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