Downlink power control for variable bit rate videos over multicell wireless networks

We investigate the problem of downlink power control for streaming multiple variable bit rate (VBR) videos in a multicell wireless network, where downlink capacities are limited by inter-cell interference. We adopt a deterministic model for VBR traffic that considers video frame sizes and playout bu...

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Vydané v:2011 Proceedings IEEE INFOCOM s. 2561 - 2569
Hlavní autori: Yingsong Huang, Shiwen Mao
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: IEEE 01.04.2011
Predmet:
Downlink
Interference
Schedules
Signal to noise ratio
Upper bound
Videos
Wireless networks
ISBN:1424499194, 9781424499199
ISSN:0743-166X
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Abstract We investigate the problem of downlink power control for streaming multiple variable bit rate (VBR) videos in a multicell wireless network, where downlink capacities are limited by inter-cell interference. We adopt a deterministic model for VBR traffic that considers video frame sizes and playout buffers at the mobile users. The problem is to find the optimal transmit powers for the base stations, such that VBR video data can be delivered to mobile users without causing playout buffer underflow or overflow. We formulate a nonlinear nonconvex optimization problem and prove the condition for the existence of feasible solutions. We then develop a centralized branch-and-bound algorithm incorporating the Reformulation-Linearization Technique, which can produce (1-ε)-optimal solutions. We also propose a low-complexity distributed algorithm with fast convergence. Through simulations with VBR video traces under fading channels, we find the distributed algorithm can achieve a performance very close to that of the centralized algorithm.
AbstractList We investigate the problem of downlink power control for streaming multiple variable bit rate (VBR) videos in a multicell wireless network, where downlink capacities are limited by inter-cell interference. We adopt a deterministic model for VBR traffic that considers video frame sizes and playout buffers at the mobile users. The problem is to find the optimal transmit powers for the base stations, such that VBR video data can be delivered to mobile users without causing playout buffer underflow or overflow. We formulate a nonlinear nonconvex optimization problem and prove the condition for the existence of feasible solutions. We then develop a centralized branch-and-bound algorithm incorporating the Reformulation-Linearization Technique, which can produce (1-ε)-optimal solutions. We also propose a low-complexity distributed algorithm with fast convergence. Through simulations with VBR video traces under fading channels, we find the distributed algorithm can achieve a performance very close to that of the centralized algorithm.
Author Yingsong Huang
Shiwen Mao
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  organization: Dept. of Electr. & Comput. Eng., Auburn Univ., Auburn, AL, USA
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  surname: Shiwen Mao
  fullname: Shiwen Mao
  organization: Dept. of Electr. & Comput. Eng., Auburn Univ., Auburn, AL, USA
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Snippet We investigate the problem of downlink power control for streaming multiple variable bit rate (VBR) videos in a multicell wireless network, where downlink...
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SubjectTerms Downlink
Interference
Schedules
Signal to noise ratio
Upper bound
Videos
Wireless networks
Title Downlink power control for variable bit rate videos over multicell wireless networks
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