MARS: Multiple Access Radio Scheduling for a Multi-homed Mobile Device in Soft-RAN
Guolin Sun, Kongmaing Eng, Seng Yin, Guisong Liu, Geyong Min · KSII Transactions on Internet and Information Systems · 2016
In order to improve the Quality-of-Service (QoS) of latency sensitive applications in next-generation cellular networks, multi-path is adopted to transmit packet stream in real-time to achieve high-quality video transmission in heterogeneous wireless networks.However, multi-path also introduces two important challenges: out-of-order issue and reordering delay.In this paper, we propose a new architecture based on Software Defined Network (SDN) for flow aggregation and flow splitting, and then design a Multiple Access Radio Scheduling (MARS) scheme based on relative Round-Trip Time (RTT) measurement.The QoS metrics including end-to-end delay, throughput and the packet out-of-order problem at the receiver have been investigated using the extensive simulation experiments.The performance results show that this SDN architecture coupled with the proposed MARS scheme can reduce the end-to-end delay and the reordering delay time caused by packet out-of-order as well as achieve a better throughput than the existing SMOS and Round-Robin algorithms.