Base Station Sleeping Control and Power Matching for Energy-Delay Tradeoffs with Bursty Traffic

IEEE Trans. Vehicular Tech.
Published Date:2016
In this paper, we study sleeping control and power
matching for a single cell in cellular networks with bursty traffic.
The base station (BS) sleeps whenever the system is empty,
and wakes up when N users are assembled during the sleep
period. The service capacity of the BS in the active mode is
controlled through adjusting its transmit power. The total power
consumption and average delay are analyzed, based on which the
impact of parameter N and transmit power on the energy-delay
tradeoff is studied. It is shown that given the average traffic load,
the more bursty the traffic is, the less the total power is consumed,
while the delay performance of more bursty traffic is better
only under certain circumstances. The optimal energy-delay
tradeoff is then obtained through joint sleeping control and power
matching optimization. The relationship between the optimal
control parameters and the asymptotic performance are also
provided. Moreover, the influence of the traffic autocorrelation
is explored, which shows less impact on the system performance
compared with that of the burstiness. Numerical results show
the energy saving gain of the joint sleeping control and power
matching scheme, as well as the impact of burstiness on the
optimal energy-delay tradeoff.

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