Stability of Rate and Power Control Algorithms in Wireless Cellular Networks
2011 (English)In: 2011 50th IEEE Conference On Decision And Control And European Control Conference (CDC-ECC), IEEE , 2011, 4535-4541 p.Conference paper (Refereed)
In radio resource management for cellular networks a trade-off has to be made between the congestion level, related to cell coverage and intercell interference, and the Quality of Service (QoS) or data rates of the users. This is implemented by using a fast inner power control loop and an outer rate control algorithm, working on a slower time scale. Due to the distributed nature of the network, both information and control is distributed. Measurements of congestion and QoS are used in the control loops and this introduces a nonlinear feedback. Another complicating factor is that filtering, computations and information exchange in the network introduce time delays. In this paper we propose a general high order model as a cascade system with an outer and inner control loop. The control algorithms use distributed information available in the network. The full system model includes the nonlinear feedback from congestion and QoS measurements, time delays and time scale modelling. We provide sufficient conditions for stability and convergence of the system. Our primary analysis tool is input output theory.
Place, publisher, year, edition, pages
IEEE , 2011. 4535-4541 p.
, IEEE Conference on Decision and Control. Proceedings, ISSN 0191-2216
Radio Systems, Framework
IdentifiersURN: urn:nbn:se:kth:diva-137164DOI: 10.1109/CDC.2011.6160695ISI: 000303506205025ScopusID: 2-s2.0-84860689528ISBN: 978-161284800-6OAI: oai:DiVA.org:kth-137164DiVA: diva2:679094
2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011; Orlando, FL; United States; 12 December 2011 through 15 December 2011
QC 201312132013-12-132013-12-112013-12-13Bibliographically approved