Efficient Scheduling for Heterogeneous Traffic in Downlink

This paper studies optimal allocation of resources to users in a fading Broadcast Channel (BC) to support heterogeneous traffic. Resource allocation is done in a cross-layer manner for both Deadline-Sensitive (DS) and Best-Effort (BE) data to provide users guaranteed Quality of Service (QoS). Given the user queue-states, the proposed algorithm allocates the minimum resource to 'Just' meet the deadlines for DS packets a fixed % of time. The remaining resources are then optimally split between the users for their BE data to maximize sum-rate, minimize buffer holding cost or any general utility function.