Gi Seok Park  Hyunmin Noh  Jae Jun Ha  Hyung Jun Kim  Sang Heon Shin  Dong Hyun Kim  Jong Hwan Ko  Jeung Won Choi  Hwangjun Song

10.5626/JOK.2019.46.6.577

Dual connectivity Software-Defined Networking video streaming Fountain code

In this paper, we propose a traffic steering system with dual connectivity to provide stable video streaming services for users by steering portion of the macrocell traffic into small cells. The proposed system achieves a good balance between fairness and social welfare in terms of video quality by allocating the radio resource of the macro base station. The user data flow is divided into two channels toward the macro base station and the small cell AP, and the users receive their data from both. In the proposed system, the fountain code is adopted to overcome practical issues in the dual connectivity. Moreover, the SDN is employed not only to rapidly react to time-varying network condition, but also to control network resources efficiently. The proposed system is implemented using NS-3. The simulation results show that the proposed system can achieve much better performance compared with existing traffic steering algorithms.