DocumentCode :
849430
Title :
Optimal Transmission Power for Single- and Multi-Hop Links in Wireless Packet Networks With ARQ Capability
Author :
Seo, Hanbyul ; Lee, Byeong Gi
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ.
Volume :
55
Issue :
5
fYear :
2007
fDate :
5/1/2007 12:00:00 AM
Firstpage :
996
Lastpage :
1006
Abstract :
In this paper, we rigorously investigate the energy minimization problem for wireless packet networks with automatic repeat request (ARQ) capability. We first formulate the problem for the single-hop case under constrained packet delay and reliability and derive the necessary and sufficient condition for the optimal transmission power at each ARQ stage. We formulate a global rule of optimal transmission power control that achieves optimality regardless of the delay and reliability constraints. Then we extend it to encompass the multi-hop case by dividing the overall problem into two subproblems-energy determination for each ARQ stage and energy distribution among the constituent nodes. We show that the optimality condition established for the single-hop case is also applicable to solve the energy determination problem in the multi-hop case, rendering an optimal solution to the energy distribution problem. Numerical examples reveal that a significant amount of energy is saved by adopting the optimal transmission power and the performance gain is strongly correlated with the decreasing property of the frame error rate
Keywords :
automatic repeat request; error statistics; packet radio networks; power control; radio links; telecommunication control; telecommunication network reliability; ARQ; automatic repeat request; constrained packet delay; frame error rate; multihop links; optimal transmission power control; reliability constraints; single-hop links; wireless packet networks; Automatic repeat request; Delay; Energy efficiency; Error correction; Interference; Power control; Spread spectrum communication; Sufficient conditions; Wireless application protocol; Wireless sensor networks; Automatic repeat request (ARQ) protocol; energy minimization; transmission power control; wireless data network;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2007.894104
Filename :
4200959
Link To Document :
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