Self-organizing distributed inter-cell beam coordination in cellular networks with best effort traffic

G. Wunder, M. Kasparick, A. Stolyar, H. Viswanathan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interference reduction, cooperation and the performance of cell-edge users are important issues in next generation cellular systems. Based on previous works for single-input single-output (SISO) systems, we propose a novel interference reducing self-organizing coordination scheme for a multi antenna OFDM system with space division multiple access (SDMA). The proposed Virtual Subband Algorithm (VSA) tries to maximize the overall network utility by adjusting transmit powers on a per beam granularity and leads to a soft fractional frequency reuse. It uses only small additional information exchange between sectors and infrequent additional long-term feedback. Although reducing interference, VSA follows a completely new approach by having all beams switched-on all the time. Simulations show that in static settings compared to a non-cooperative, highly opportunistic, greedy scheduling scheme, VSA achieves significant gains both in the performance of cell-edge users and in the overall system performance, defined in this paper as the geometric average of user throughputs. Moreover it is shown that cell-edge users benefit even in fast-fading cases, although a gain in system-wide performance cannot be guaranteed.

Original languageEnglish (US)
Title of host publicationWiOpt 2010 - 8th Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Pages295-302
Number of pages8
StatePublished - Aug 27 2010
Externally publishedYes
Event8th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2010 - Avignon, France
Duration: May 31 2010Jun 4 2010

Publication series

NameWiOpt 2010 - 8th Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks

Other

Other8th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2010
CountryFrance
CityAvignon
Period5/31/106/4/10

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ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications
  • Control and Optimization

Cite this

Wunder, G., Kasparick, M., Stolyar, A., & Viswanathan, H. (2010). Self-organizing distributed inter-cell beam coordination in cellular networks with best effort traffic. In WiOpt 2010 - 8th Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (pp. 295-302). [5518797] (WiOpt 2010 - 8th Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks).