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Joint optimization of power consumption and transmission delay in a cache-enabled C-RAN

Abdollahi Bafghi, A. H ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/LWC.2020.2981330
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. In this letter, we consider a cache-enabled cloud radio access network with single-antenna base stations and single-antenna mobile users. Each base station can access the central processor of the network via a separate backhaul link with limited capacity. We utilize the interference alignment scheme as the transmission strategy between base stations and users. By assuming a block transmission scheme, we define a related data transmission delay. We derive the transmission delay and network power consumption. At last, we solve the problem of joint optimization of data transmission delay and network power consumption using DC programming algorithm. In our numerical results, we investigate the trade-off between delay and power consumption, and compare the results with those of a prior work that does not take the transmission delay into account in its optimization problem. © 2012 IEEE
  6. Keywords:
  7. C-RAN ; DC programming ; Power consumption ; Transmission delay ; Antennas ; Base stations ; Data transfer ; Economic and social effects ; Mobile telecommunication systems ; Radio access networks ; Block transmissions ; Central processors ; Data transmission delay ; Interference alignment ; Joint optimization ; Optimization problems ; Transmission delays ; Transmission strategies ; Electric power utilization
  8. Source: IEEE Wireless Communications Letters ; Volume 9, Issue 8 , 2020 , Pages 1137-1140
  9. URL: https://ieeexplore.ieee.org/document/9037349