A cooperative MAC protocol with virtual-antenna array support in a multi-AP WLAN system

Authors:
Yao Hua;Qian Zhang;Zhisheng Niu
Affiliations:
Tsinghua National Laboratory for Information Science and Technology, and the Department of Electronic Engineering, Tsinghua University, Beijing, P. R. China;Department of Computer Science, Hong Kong University of Science and Technology;Tsinghua National Laboratory for Information Science and Technology, and the Department of Electronic Engineering, Tsinghua University, Beijing, P. R. China
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

Citing 10
Cited 2

Wireless Communications: Principles and Practice

Wireless Communications: Principles and Practice
Characterizing achievable rates in multi-hop wireless networks: the joint routing and scheduling problem

Proceedings of the 9th annual international conference on Mobile computing and networking
Convex Optimization

Convex Optimization
Self-management in chaotic wireless deployments

Proceedings of the 11th annual international conference on Mobile computing and networking
On the complexity of scheduling in wireless networks

Proceedings of the 12th annual international conference on Mobile computing and networking
Understanding the Impact of Interference on Collaborative Relays

IEEE Transactions on Mobile Computing
Cooperative relay to improve diversity in cognitive radio networks

IEEE Communications Magazine
Leveraging multi-AP diversity for transmission resilience in wireless networks: architecture and performance analysis

IEEE Transactions on Wireless Communications
A Fair MAC Protocol for IEEE 802.11-Based Ad Hoc Networks: Design and Implementation

IEEE Transactions on Wireless Communications
CoopMAC: A Cooperative MAC for Wireless LANs

IEEE Journal on Selected Areas in Communications

Distributed physical carrier sensing adaptation scheme in cooperative MAP WLAN

GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Cognitive cross-layer design with QoS provisioning for cooperative wireless networking

Proceedings of the 44th Annual Simulation Symposium

Quantified Score

Hi-index	0.01

Visualization

Abstract

In this paper we propose a cooperative-aware medium access control (MAC) protocol in the newly emerged Multiple Access Point (MAP) WLAN system, where each user can associate with multiple APs. Leveraging the multiple association feature, the spectrum efficient virtual-antenna array (VA) cooperative strategy can be utilized. However, the APs selected for VA transmission cannot serve packet transmission individually, which leads to spatial reuse inefficiency. To balance the tradeoff between spatial reuse efficiency and cooperative gain, an interference model that describes interference among cooperative transmissions should be first established. In this paper, a virtual link model is proposed, where each virtual link is composed of one end user, one combination of VA APs and one data rate to represent one cooperative transmission. Based on this model, a multi-cell virtual link scheduling problem is formulated to achieve optimal system performance. Combined with local clique searching procedure and physical carrier sensing adaptation scheme, the dual decomposition of the scheduling problem can distributively achieve the near optimal performance. Finally a VA-based cooperative MAC (V-MAC) protocol is proposed to implement the cooperative scheduling scheme. Simulation result shows V-MAC significantly improves the system throughput meanwhile guarantees the system fairness.