Directional Cooperative MAC Protocol Design and Performance Analysis for IEEE 802.11ad WLANs

作者：Chen Qian^*; Tang Jiqiang; Wong David Tung Chong; Peng Xiaoming; Zhang Youguang

来源：IEEE Transactions on Vehicular Technology, 2013, 62(6): 2667-2677.

DOI：10.1109/TVT.2013.2245352

• Cooperative communication
• directional antenna
• IEEE 802.11ad
• medium access control (MAC)
• performance analysis
• saturated system throughput

In this paper, we consider the directional multigigabit (DMG) transmission problem in IEEE 802.11ad wireless local area networks (WLANs) and design a random-access-based medium access control (MAC) layer protocol incorporated with a directional antenna and cooperative communication techniques. A directional cooperative MAC protocol, namely, D-CoopMAC, is proposed to coordinate the uplink channel access among DMG stations (STAs) that operate in an IEEE 802.11ad WLAN. Using a 3-D Markov chain model with consideration of the directional hidden terminal problem, we develop a framework to analyze the performance of the D-CoopMAC protocol and derive a closed-form expression of saturated system throughput. Performance evaluations validate the accuracy of the theoretical analysis and show that the performance of D-CoopMAC varies with the number of DMG STAs or beam sectors. In addition, the D-CoopMAC protocol can significantly improve system performance, as compared with the traditional IEEE 802.11ad MAC protocol.

• 出版日期2013-7
• 单位北京航空航天大学