Co-channel impact of piconets on WLAN modeling

Computer Engineering and Applications ›› 2014, Vol. 50 ›› Issue (20): 105-109.

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Co-channel impact of piconets on WLAN modeling

ZHANG Bingyu1, ZHANG Jinyi1，2，3, LI Juanjuan1, TANG Xia2, ZHOU Rongjun2

1.Key Laboratory of Special Fiber Optics and Optical Access Networks, Ministry of Education, Shanghai University, Shanghai 200072, China
2.Microelectronic Research & Development Center, Shanghai University, Shanghai 200072, China
3.Key Laboratory of Advanced Displays and System Application, Ministry of Education, Shanghai University, Shanghai 200072, China

Online:2014-10-15 Published:2014-10-28

蓝牙微微网对WLAN网络同频干扰的建模

张秉煜1，张金艺1，2，3，李娟娟1，唐夏2，周荣俊2

1.上海大学特种光纤与光接入网省部共建教育部重点实验室，上海 200072
2.上海大学微电子研究与开发中心，上海 200072
3.上海大学教育部新型显示与系统应用重点实验室，上海 200072

Abstract

Abstract: Operating in the same 2.4 GHz ISM band, piconets and IEEE 802.11b WLANs inevitably have mutual impact which seriously degrades each network performance. In this paper, the CSMA/CA and RTS/CTS-based IEEE 802.11b protocol is introduced. The relationship between the decreasing throughput of IEEE 802.11b WLAN and piconets in operation is analyzed theoretically in order to set up a mathematical model to approach the co-channel impact from piconets. The results indicate that the model comes close to the simulation throughput of IEEE 802.11b WLAN under the impact of piconets with respective relative error of 17.86%, 10.39% and 6.64%. Based on the model, a scheme to reduce impact of piconets is proposed which adjusts the length of IEEE 802.11b frame quickly, adaptively with low cost to upgrade the IEEE 802.11b throughput.

Key words: bluetooth piconet, IEEE 802.11b, Distributed Coordination Function（DCF）, impact, throughput

摘要： 由于同在2.4 GHz的ISM频段下工作，IEEE 802.11b局域网和蓝牙微微网不可避免地产生相互干扰，严重影响各自的网络性能。通过对基于CSMA/CA和RTS/CTS机制的IEEE 802.11b协议进行数学分析，剖析了其吞吐量降低与发送不同蓝牙数据包之间的内在关系，建立了一个蓝牙微微网对IEEE 802.11b局域网干扰影响的数学模型。仿真结果表明：该模型能较好地逼近IEEE 802.11b局域网在蓝牙微微网干扰下的吞吐量仿真曲线，在蓝牙DH1、DH3、DH5数据包干扰的情况下，平均相对误差分别为17.86%、10.39%和6.64%。根据该数学模型，提出了一个降低蓝牙微微网干扰的有效方案。该方案能快速、低成本、自适应地调整IEEE 802.11b发送帧长，有效提高其在蓝牙微微网干扰下的吞吐量。

关键词: 蓝牙微微网, IEEE 802.11b, 分布式协调功能（DCF）, 干扰, 吞吐量

ZHANG Bingyu1, ZHANG Jinyi1，2，3, LI Juanjuan1, TANG Xia2, ZHOU Rongjun2. Co-channel impact of piconets on WLAN modeling[J]. Computer Engineering and Applications, 2014, 50(20): 105-109.

张秉煜1，张金艺1，2，3，李娟娟1，唐夏2，周荣俊2. 蓝牙微微网对WLAN网络同频干扰的建模[J]. 计算机工程与应用, 2014, 50(20): 105-109.

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Co-channel impact of piconets on WLAN modeling

蓝牙微微网对WLAN网络同频干扰的建模

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