Two Stage Power Control in Multi-cell Wireless Networks

Konferenz: European Wireless 2011 - Sustainable Wireless Technologies
27.04.2011 - 29.04.2011 in Vienna, Austria

Tagungsband: European Wireless 2011

Seiten: 7Sprache: EnglischTyp: PDF

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Stefanov, Stoycho; Stanczak, Slawomir (Heinrich-Hertz-Lehrstuhl für Informationstheorie und theoretische Informationstechnik, Technische Universität Berlin, Einsteinufer 27, 10587 Berlin, Germany)
Feistel, Angela; Stanczak, Slawomir (Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute Einsteinufer 37, 10587 Berlin, Germany)

In this work we address the concept of a two stage power allocation in a multi-cell wireless network. The first stage is the outer-loop power control (OLPC), where a central network controller (CNC) operates on a larger timescale and allocates power budgets to base stations or access points. OLPC aims at controlling the inter-cell interference (ICI) in average. The individual bandwidth and power of each user are allocated on frame-level during the second stage of the resource allocation. We solve the OLPC-problem using a max-min SINR-balancing approach. Further, we introduce different strategies for reducing the feedback between BSs and the CNC and investigate the influence of the reduced feedback on the system outage performance.