A distributed multi-channel MAC protocol with parallel cooperation for the next generation WLAN
作者： Bo Yang , Bo Li , Zhongjiang Yan , Mao Yang
DOI: 10.1109/WCNC.2016.7564691
关键词: Fixed wireless 、 Wireless lan 、 Wi-Fi array 、 Wireless LAN controller 、 Network packet 、 Broadband 、 Computer network 、 Wireless network 、 Heterogeneous network 、 Communication channel 、 Computer science 、 Throughput 、 Spectral efficiency 、 Distributed computing 、 Wireless
摘要: As one of the significant driving forces future broadband heterogeneous networks (5G), Next Generation WLAN (NGW) has been initiated following 802.11 HEW (High-Efficiency WLAN) study group with a focus on improving spectrum efficiency and area throughput. However, Low-Rate-Links (LRLs) severely degrade overall wireless network performance, particularly under dense environments in NGW. To improve data rate links, cooperation communication is proposed to divide low-rate-link into multiple successive links much higher over same frequency channel, which denoted as ‘Serial-Coop’/‘SC’ strategy. existing ‘Serial-Coop’ strategy suffers from disadvantage large cumulative delay because packets are relayed within two timeslots. In this paper, distributed Multi-channel MAC protocol Parallel Cooperation for NGW, called PC-MMAC, initiate concurrent communications channels fashion. Then, an approximate analysis upper bound saturation throughput gain derived. Further, enhanced mechanism strengthen robustness by dynamically adjusting based number available channels. Extensive simulation results show that PC-MMAC outperforms ‘Non-Coop’ scheme1 25% 33% respectively.
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