Resource Scheduling for Mixed Traffic Types with Scalable TTI in Dynamic TDD
09 February 2017
The idea behind this paper is to analyse the performance benefits of a user-centric scheduling approach, exploiting the combination of the promising advantages of a flexible duration of the transmission time interval (TTI) available in the fifth generation (5G) and the dynamic Time Division Duplex (TDD) where downlink (DL) and uplink (UL) ratio can be adapted to the traffic load. The formulation of the joint optimization problem and the provided solutions take into consideration the individual requirements of each single user in terms of sustainable latency and desired throughput, thus implementing a real user-centric scheduling approach. Moreover, solutions are provided in a scenario with mixed traffic types, mobile broadband (MBB) and mission critical communications (MCC), showing remarkable performance enhancement of the proposed scheme over traditional dynamic TDD schemes with fixed TTI length in terms of both achievable throughput of the MBB users and guaranteed latency for the MCC users.
