出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In a dense Machine-to-Machine (M2M) network, a large number of stations contend to achievetransmission opportunity and it creates a critical congestion problem. To solve this issue, agroup-based contention Medium Access Control (MAC) protocol is introduced. Stations aredivided into small numbers of groups and only one station in each group will contend as agroup leader to achieve the reserved time interval dedicated to a winner group. It can reducethe contention overhead and lessen the congestion problem. In this paper, we proposeScheduled Group Contention MAC (SGCMAC) protocol to enhance the group-based contentionMAC. The proposed SGCMAC protocol divides groups based on the traffic categories ofstations and schedules the contention groups to reduce the contention overhead. We alsopropose an efficient resource management mechanism in the group grant time to prevent thewaste of time caused by idle stations. Simulations with IEEE 802.11ah parameters demonstratethat our proposed SGCMAC has performance gains over other group-based contention MACprotocols.
关键词：Medium Access Control (MAC); Machine-to-Machine; Grouping; Wireless LAN; Random;Access Protocols
