Open AccessEnergy‐efficient resource allocation for OFDMA networks with sleep mode
Author(s) -
Ren H.B.,
Zhao M.,
Zhu J.K.,
Zhou W.Y.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2012.2908
Subject(s) - sleep mode , energy consumption , computer science , throughput , resource allocation , orthogonal frequency division multiple access , mathematical optimization , energy (signal processing) , mode (computer interface) , resource (disambiguation) , integer programming , efficient energy use , real time computing , computer network , orthogonal frequency division multiplexing , algorithm , wireless , engineering , telecommunications , mathematics , power (physics) , channel (broadcasting) , physics , statistics , power consumption , quantum mechanics , electrical engineering , operating system
Investigated is the resource allocation problem in OFDMA networks by introducing the sleep mode. In contrast to the existing literature, which mainly focuses on improving network throughput by increasing energy consumption energy efficient resource allocation with sleep mode is considered under which some components of the transmitter can be shut down to save energy. A mix integer programming problem is proposed to minimise energy consumption while satisfying the average data rate requirement. The existence of a unique globally optimal resource allocation solution is demonstrated and an iterative algorithm is developed to obtain it. The simulation result shows that the proposed algorithm can effectively save total energy consumption especially when the network is under low load condition.