DocumentCode :
873177
Title :
Delay-bounded packet scheduling of bursty traffic over wireless channels
Author :
Rajan, Dinesh ; Sabharwal, Ashutosh ; Aazhang, Behnaam
Author_Institution :
Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA
Volume :
50
Issue :
1
fYear :
2004
Firstpage :
125
Lastpage :
144
Abstract :
In this paper, we study minimal power transmission of bursty sources over wireless channels with constraints on mean queuing delay. The power minimizing schedulers adapt power and rate of transmission based on the queue and channel state. We show that packet scheduling based on queue state can be used to trade queuing delay with transmission power, even on additive white Gaussian noise (AWGN) channels. Our extensive simulations show that small increases in average delay can lead to substantial savings in transmission power, thereby providing another avenue for mobile devices to save on battery power. We propose a low-complexity scheduler that has near-optimal performance. We also construct a variable-rate quadrature amplitude modulation (QAM)-based transmission scheme to show the benefits of the proposed formulation in a practical communication system. Power optimal schedulers with absolute packet delay constraints are also studied and their performance is evaluated via simulations.
Keywords :
AWGN channels; minimisation; mobile radio; packet radio networks; packet switching; power control; quadrature amplitude modulation; queueing theory; scheduling; telecommunication control; telecommunication traffic; AWGN channels; absolute packet delay constraints; additive white Gaussian noise; bursty traffic; delay-bounded packet scheduling; low-complexity scheduler; mean queuing delay; minimal power transmission; mobile devices; near-optimal performance; performance evaluation; power minimizing schedulers; power optimal schedulers; quadrature amplitude modulation; variable-rate QAM-based transmission; wireless channels; AWGN; Additive white noise; Base stations; Batteries; Communication system traffic control; Delay; Optimal scheduling; Scheduling algorithm; Throughput; Traffic control;
fLanguage :
English
Journal_Title :
Information Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9448
Type :
jour
DOI :
10.1109/TIT.2003.821989
Filename :
1262621
Link To Document :
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