A channel reservation based cooperative multi-channel MAC protocol for the next generation WLAN
A channel reservation based cooperative multi-channel MAC protocol for the next generation WLAN
复制标题
下一代WLAN基于信道预留的协作多信道MAC协议
DOI：
10.1007/s11276-016-1355-3
复制
发表时间：
2016-08
影响因子：
3
通讯作者：
Mao Yang
中科院分区：
文献类型：
--
作者：
Bo Yang;Bo Li;Zhongjiang Yan;Mao Yang
近来，带宽需求的爆炸性增长已经激发了无线局域网（WLAN）中的许多技术革命，诸如IEEE 802.11ax任务组，其被建立以增强高密度部署场景下的下一代WLAN（NGW）的吞吐量性能。然而，一方面，已知具有冲突避免的载波侦听多路访问（CSMA/CA）已经成为WLAN中普遍接受的访问机制，当站（STA）相对拥挤时，这被示出为带来严重的冲突。在这种情况下，信道接入效率肯定会降低，因此最终浪费了一些频率信道资源。另一方面，由于无线信道的固有衰落效应，NGW的网络吞吐量（即，802.11ax）由于低速率链路（LRL）的存在而进一步恶化，其中可用的数据传输速率相对较低。为了解决上述两个技术问题，提出了一种用于下一代网络的分布式多信道MAC协议，称为CRC-MMAC。在提出的CRC-MMAC中，提出了预留协作链路（RCL）的概念，并在多信道环境下发起，以充分利用信道预留和协作中继的潜力。因此，网络中的冲突，有效地减少使用信道预留，以及数据传输速率的LRL是显着提高与合作中继。此外，饱和吞吐量增益的上限的分析，推导出，这是通过大量的仿真验证。与"基线"方案相比，实验结果表明，CRC-MMAC协议的饱和吞吐量超过约，平均分组时延降低了近.
Recently, explosive growth of bandwidth demands has motivated many technological revolutions in the Wireless Local Area Networks (WLANs) such as the IEEE 802.11ax task group, which is established to enhance the throughput performance for the Next Generation WLANs (NGW) under high dense deployment scenarios. However, on the one hand, it is known that the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) has become a generally accepted access mechanism in the WLANs, which is shown to bring about serious collisions when the stations (STAs) are relatively crowded. In this case, the channel access efficiency is definitively decreased and thus some frequency channel resources are eventually wasted. On the other hand, due to the inherent fading effect of wireless channel, network throughput of the NGW (i.e., 802.11ax) is further degraded by the existence of Low-Rate-Links (LRLs), where the available data transmission rate is relatively low. To resolve the above two technical issues, a distributed multi-channel MAC protocol, called CRC-MMAC, is proposed for the NGW. In the proposed CRC-MMAC, the concept of reserved-cooperative-link (RCL) is proposed and initiated under multi-channel environment, to fully exploit the potential of both channel reservation and cooperative relay. Accordingly, collisions in the network are effectively decreased using channel reservation as well as the data transmission rate of LRLs is significantly improved with cooperative relay. Furthermore, an analysis of the upper bound of saturation throughput gain is derived, which is validated by extensive simulations. Compared with the ‘Baseline’ scheme, i.e., the existing Dynamic Channel Assignment (DCA) protocol [1] using TXOP (Transmission Opportunity), the experiments results show that the saturation throughput of CRC-MMAC exceeds about, and the average packet delay is decreased by nearly.
登录
查看更多内容
DOI：
10.4172/1204-5357.1000125
发表时间：
2015-10
期刊：
The Journal of Internet Banking and Commerce
影响因子：
--
作者：
G. Pau
通讯作者：
G. Pau
DOI：
10.1017/cbo9780511841224
发表时间：
2005-08
期刊：
--
影响因子：
--
作者：
A. Goldsmith
通讯作者：
A. Goldsmith
DOI：
10.1109/ispan.2000.900290
发表时间：
2000-12
期刊：
Proceedings International Symposium on Parallel Architectures, Algorithms and Networks. I-SPAN 2000
影响因子：
--
作者：
Shih-Lin Wu;Chih-Yu Lin;Y. Tseng;J. Sheu
通讯作者：
Shih-Lin Wu;Chih-Yu Lin;Y. Tseng;J. Sheu
DOI：
10.1109/wcncw.2015.7122542
发表时间：
2015-03
期刊：
2015 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)
影响因子：
--
作者：
Bo Li;Qiao Qu;Zhongjiang Yan;Mao Yang
通讯作者：
Bo Li;Qiao Qu;Zhongjiang Yan;Mao Yang
影响因子：
3.9
作者：
Yeong-Sheng Chen;Der-Jiunn Deng;Chun-Chien Teng
通讯作者：
Yeong-Sheng Chen;Der-Jiunn Deng;Chun-Chien Teng