WLC39-1: Transient Analysis for Wireless Power Control
Abstract
Power control mitigates interference and maintains required QoS levels in cellular wireless networks. An important class of distributed power control (DPC) was proposed by Foschini and Miljanic in 1993, with many variants developed since. Almost all related work focuses on the equilibrium and asymptotic convergence properties. However, for many applications transient behavior is more important. If a link's SIR drops below a critical threshold for too long, the connections over this link will be dropped, rendering the entire concept of equilibrium resource allocation meaningless. This paper proposes a systematic approach to the analysis of transient properties of DPC algorithms, in particular Foschini-Miljanic, based on tools from control theory. Analytically, we present a sufficient condition to ensure that after links reach their minimum SIR levels, their SIR requirements can be guaranteed for future time steps. Computationally, we pose this problem as verifying the invariance of certain regions in the SIR space, which for the basic DPC algorithm can be cast as a Linear Program (LP). Furthermore, using insights gained from the analysis, we propose a preliminary design framework for new iterative power control schemes.
Additional Information
© 2006 IEEE. This work has been supported in part by NSF Grants CCF-0448012, CNS-0417607, and AFOSR FA9550-06-1-0297. The authors would like to thank Prashanth Hande at Qualcomm and Princeton University for his helpful comments.Attached Files
Published - 04151471.pdf
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Additional details
- Eprint ID
- 77319
- Resolver ID
- CaltechAUTHORS:20170509-165318984
- CCF-0448012
- NSF
- CNS-0417607
- NSF
- FA9550-06-1-0297
- Air Force Office of Scientific Research (AFOSR)
- Created
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2017-05-16Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field