Adaptive QoS for wireless multimedia networks using power control and smart antennas

This paper addresses the problem of adaptive quality-of-service (QoS) for mobile multimedia services under a power controlled wireless network using smart antennas. Given the nature of multimedia, we chose the signal-to-interference-and-noise ratio (SINR) of each user's channel as the QoS index. We direct our attention toward two problems. The first is to increase the SINR levels for multimedia users as much as the system can provide for, under channel fading and interference conditions. Different users have distinct desired SINR levels according to their requested service types; our algorithm uses an iterative method to drive the SINR levels as close as possible to those desired levels. The SINR levels are improved without deteriorating quality for other types of users. Simulations show a significant increase in the average SINR levels for multimedia users. The second problem considered is how to initiate new users into the network speedily by using lower complexity algorithms that yield reliable results. Simulations show that our fast activation scheme can substantially reduce the time for activating new users into the system.

[1]  K. J. Ray Liu,et al.  Adaptive QoS for mobile multimedia applications using power control and smart antennas , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[2]  Joseph Pasquale,et al.  Providing quality of service for wireless links: wireless/wired networks , 1999, IEEE Wirel. Commun..

[3]  R. Morgan Mobile radio communications. , 1982, Hospital engineering.

[4]  L. Mirsky,et al.  The Theory of Matrices , 1961, The Mathematical Gazette.

[5]  Hiroyuki Morikawa,et al.  Distributed power control for various QoS in a CDMA wireless system , 1997, Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97.

[6]  Fabio Graziosi,et al.  Power allocation in a multimedia CDMA wireless system with imperfect power control , 1999, 1999 IEEE International Conference on Communications (Cat. No. 99CH36311).

[7]  Ioannis Stavrakakis,et al.  Achievable QoS in an interference/resource limited shared wireless channel , 1998, IEEE J. Sel. Areas Commun..

[8]  Leandros Tassiulas,et al.  Joint optimal power control and beamforming in wireless networks using antenna arrays , 1998, IEEE Trans. Commun..

[9]  V. N. Bogaevski,et al.  Matrix Perturbation Theory , 1991 .

[10]  K. J. Ray Liu,et al.  Downlink beamforming for DS-CDMA mobile radio with multimedia services , 2001, IEEE Trans. Commun..

[11]  F. R. Gantmakher The Theory of Matrices , 1984 .

[12]  Ayman Fawzy Naguib,et al.  Adaptive antennas for CDMA wireless networks , 1996 .

[13]  Leandros Tassiulas,et al.  Transmit beamforming and power control for cellular wireless systems , 1998, IEEE J. Sel. Areas Commun..

[14]  J. E. Miller,et al.  Smart antenna adaptive performance in the presence of imperfect power control, multipath and shadow fading , 1997, GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record.

[15]  Richard Bellman,et al.  Introduction to matrix analysis (2nd ed.) , 1997 .

[16]  Anthony Ephremides,et al.  Admission control with priorities: Approaches for multi‐rate wireless systems , 1999, Mob. Networks Appl..

[17]  Tatsuya Yamazaki,et al.  Adaptive QoS Management for Multimedia Applications in Heterogeneous Environments: A Case Study with Video QoS Mediation (Special Issue on New Paradigms in Network Management) , 1999 .

[18]  R.C. Johnson,et al.  Introduction to adaptive arrays , 1982, Proceedings of the IEEE.

[19]  Roy D. Yates,et al.  Resource allocation for cellular radio systems , 1997 .

[20]  Ioannis Stavrakakis,et al.  Delivering QoS requirements to traffic with diverse delay tolerances in a TDMA environment , 1999, TNET.

[21]  Gene H. Golub,et al.  Matrix computations (3rd ed.) , 1996 .

[22]  Taieb Znati,et al.  A framework for call admission control and QoS support in wireless environments , 1999, IEEE INFOCOM '99. Conference on Computer Communications. Proceedings. Eighteenth Annual Joint Conference of the IEEE Computer and Communications Societies. The Future is Now (Cat. No.99CH36320).

[23]  Peter Lancaster,et al.  The theory of matrices , 1969 .

[24]  R. Bellman Introduction To Matrix Analysis Second Edition , 1997 .

[25]  K. J. Ray Liu,et al.  Adaptive QoS for mobile multimedia services over wireless networks , 2000, 2000 IEEE International Conference on Multimedia and Expo. ICME2000. Proceedings. Latest Advances in the Fast Changing World of Multimedia (Cat. No.00TH8532).

[26]  J. H. Winters,et al.  Forward link smart antennas and power control for IS-136 , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[27]  Richard Bellman,et al.  Introduction to Matrix Analysis , 1972 .

[28]  Stephen S. Rappaport,et al.  Prioritized resource assignment for mobile cellular communication systems with mixed services and platform types , 1996 .

[29]  K. J. R. Liu,et al.  NP-hardness of the stable matrix in unit interval family problem in discrete time , 2001 .