Joint Data Admission Control and Power Allocation Over Fading Channel Under Average Delay Constraint

Abstract

In this chapter, we consider a point-to-point communications link over a fading channel with randomly arriving data at the source buffer for transmission to the destination. For delay quality-of-service (QoS) requirement, (maximum) average delay constraint is imposed. Also, the source is assumed to have (maximum) average power constraint. To avoid constraint violation, it is assumed that only a portion of the arriving data can be buffered (or admitted). Note that the considered data buffer admission control is different from the common user (or stream) admission control. In the latter case, we admit a particular user (among many users) into the system while in the former, we admit data packets of an already admitted user (or stream) into the transmission buffer. Under such settings, this chapter studies the joint data admission control-power allocation (AC-PA) to maximize the throughput defined as the average admitted rate. In particular, we first analyze the structural properties of the optimal AC-PA policy with respect to fading channel, data arrival, and queue length states. We then propose an online AC-PA algorithm when the statistical knowledge of the system random channel fading, and data arrival processes is unknown.