Utilizing beamforming for random access - a cross-layer paradigm

Adaptive beamforming has been shown to substantially improve the performance of a slotted Aloha packet radio system. In this paper we present a slotted Aloha based random access protocol designed to be employed in conjunction with adaptive beamforming, for use in a sectorized wireless system. The focus is on a cross-layer design approach, in which information about the status of packet transmissions is utilized to dynamically adapt antenna beams among the sectors in a cell. This scheme is especially robust against the network inefficiencies due to uneven and time-varying traffic load densities within the sectors of a cell. Simulation results demonstrate the substantial enhancement in throughput and delay performance due to the proposed scheme.

[1]  J.C.M. Mota,et al.  Impact of adaptive array architectures on S-ALOHA protocol performance , 2001, IEEE VTS 53rd Vehicular Technology Conference, Spring 2001. Proceedings (Cat. No.01CH37202).

[2]  A. Chockalingam,et al.  Performance analysis of space diversity S-ALOHA with steerable beam smart antenna arrays , 2000, Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137).

[3]  Michele Zorzi.  Performance of a MAC protocol with smart antennas in a multicellular environment , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[4]  Mounir Hamdi,et al.  Performance evaluation of mobile radio slotted ALOHA with smart antennas , 1999, WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466).

[5]  Dimitri P. Bertsekas,et al.  Data Networks , 1986 .

[6]  George Thomas.  Random access with multi-beam antenna arrays , 2002, 2002 IEEE Wireless Communications and Networking Conference Record. WCNC 2002 (Cat. No.02TH8609).

[7]  Ananthanarayanan Chockalingam,et al.  MAC layer performance with steerable multibeam antenna arrays , 1998, Ninth IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (Cat. No.98TH8361).

[8]  J. Ward,et al.  High throughput slotted ALOHA packet radio networks with adaptive arrays , 1993, IEEE Trans. Commun..

[9]  Thomas Kailath,et al.  Capacity improvement with base-station antenna arrays in cellular CDMA , 1994 .

[10]  Lang Tong,et al.  Multipacket reception in random access wireless networks: from signal processing to optimal medium access control , 2001, IEEE Commun. Mag..

[11]  K.J.R. Liu,et al.  Performance analysis for the use of adaptive beamforming in wireless packet networks , 1998, IEEE GLOBECOM 1998 (Cat. NO. 98CH36250).

[12]  Theodore S. Rappaport,et al.  Smart Antennas for Wireless Communications: Is-95 and Third Generation Cdma Applications , 1999 .

[13]  Bjorn Ottersten,et al.  Packet data throughput for wireless systems with smart antennas , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).