Antenna tilt control in CDMA networks

This paper presents a real-time utility based procedure for antenna tilt control in cellular networks. The method's convergence to Nash equilibrium is guaranteed by the concave dependence between utility function and tilt angle. The solution was verified using a CDMA motion simulator with real path-loss data collected in downtown Delhi. The simulations show a significant reduction in dropped calls when the tilt is adapted to changes in traffic. This solution can be realized on systems that install remote control antennas.

[1]  P ? ? ? ? ? ? ? % ? ? ? ? , 1991 .

[2]  Frank Kelly,et al.  Rate control for communication networks: shadow prices, proportional fairness and stability , 1998, J. Oper. Res. Soc..

[3]  S. C. Bundy Antenna downtilt effects on CDMA cell-site capacity , 1999, RAWCON 99. 1999 IEEE Radio and Wireless Conference (Cat. No.99EX292).

[4]  I. Forkel,et al.  The effect of electrical and mechanical antenna down-tilting in UMTS networks , 2002 .

[5]  Gürdal Arslan,et al.  Distributed convergence to Nash equilibria with local utility measurements , 2004, 2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601).

[6]  Kenneth L. Clarkson,et al.  The tradeoff between coverage and capacity in dynamic optimization of 3G cellular networks , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[7]  E. Benner,et al.  Effects of antenna height, antenna gain, and pattern downtilting for cellular mobile radio , 1996 .

[8]  Stephen B. Wicker,et al.  Game theory and the design of self-configuring, adaptive wireless networks , 2001, IEEE Commun. Mag..

[9]  Roger B. Myerson,et al.  Game theory - Analysis of Conflict , 1991 .

[10]  A. Kuurne,et al.  Automated and remotely optimization of antenna subsystem based on radio network performance , 2002, The 5th International Symposium on Wireless Personal Multimedia Communications.

[11]  Wu Jianhui,et al.  Antenna downtilt performance in urban environments , 1996, Proceedings of MILCOM '96 IEEE Military Communications Conference.

[12]  J. Lempiainen,et al.  Impact of mechanical antenna downtilt on performance of WCDMA cellular network , 2004, 2004 IEEE 59th Vehicular Technology Conference. VTC 2004-Spring (IEEE Cat. No.04CH37514).

[13]  Jung-Shyr Wu,et al.  Hot-spot traffic relief with a tilted antenna in CDMA cellular networks , 1998 .