对抗WLAN系统OBSS频谱效率不足的MAC层设计

doi:10.3969/j.issn.1001-2400.2017.04.001

西安电子科技大学学报

• 研究论文 • 下一篇

对抗WLAN系统OBSS频谱效率不足的MAC层设计

刘刚;郭秋瑾;郭漪;杨世勇

(西安电子科技大学综合业务网理论及关键技术国家重点实验室，陕西西安 710071)

收稿日期:2016-07-27 出版日期:2017-08-20 发布日期:2017-09-29
作者简介:刘刚(1977-)，男，副教授，E-mail: lgliu@163.com
基金资助:
国家科技重大专项资助项目(2013ZX03003013-005)；陕西省工业科技攻关资助项目(2016GY-084)；国家自然科学基金资助项目(61671346, 61372067, 61001128, 61301135)；国家863计划资助项目(2014AA01A704)

MAC layer approaches to mitigating the spectrum underutilization due to the overlapping BSS problem in WLAN

LIU Gang;GUO Qiujin;GUO Yi;YANG Shiyong

(State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071, China)

Received:2016-07-27 Online:2017-08-20 Published:2017-09-29

摘要/Abstract

摘要：

针对无线局域网系统中重叠基本服务集引起的频谱利用率不足问题，通过引入虚拟主信道，提出了两种基于竞争的媒体访问控制层设计方案，即传输机会方案和多竞争方案．传输机会方案基于长数据包传输，适用于有高吞吐量需求的应用，多竞争方案基于短数据包传输，适用于要求短时延的业务．仿真结果表明，通过有效利用重叠基本服务集引起的未被充分利用的频谱资源，传输机会方案能够极大地提高网络吞吐量，多竞争方案则能够显著降低发送短数据包的延时．

关键词: 无线局域网, 重叠基本服务集, 虚拟主信道, 传输机会, 多竞争

Abstract:

Considering the OBSS-induced spectrum underutilization problem in Wireless Local Area Networks(WLAN), two complementary contention-based Media Access Control(MAC) layer schemes are proposed by setting up a virtual-primary channel for contention. The proposed transmission opportunity(TXOP) scheme is designed for transmitting long data packets, which is suitable for applications requiring high throughputs. In contrast, the multi-contention(MC) scheme is designed for transmitting short data packets, which is suitable for applications requiring short delays. By efficiently exploiting the OBSS-induced underutilized spectrum, simulation results verify the fact that the proposed TXOP scheme can increase the throughput greatly and the proposed MC scheme can reduce the delay for short data packets significantly.

Key words: wireless local area networks, overlapping basic service set, virtual-primary channel, transmission opportunity, multi-contention

刘刚;郭秋瑾;郭漪;杨世勇. 对抗WLAN系统OBSS频谱效率不足的MAC层设计[J]. 西安电子科技大学学报, 2017, 44(4): 1-6+143.

LIU Gang;GUO Qiujin;GUO Yi;YANG Shiyong. MAC layer approaches to mitigating the spectrum underutilization due to the overlapping BSS problem in WLAN[J]. Journal of Xidian University, 2017, 44(4): 1-6+143.

参考文献

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对抗WLAN系统OBSS频谱效率不足的MAC层设计

MAC layer approaches to mitigating the spectrum underutilization due to the overlapping BSS problem in WLAN

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