Dynamic multi-link scheduling for cellular networks in high-speed transportation systems

Abstract

The research on the future high-speed communication systems has already reached the critical point with better continuous transmission and higher system capacity especially for the on-board users in the high-speed trains. However, due to the inflexible architecture of current cellular networks where Internet access schemes served by multiple Internet Service Providers lack effective coordination, it has resulted in more serious networking problems such as inefficient utilization, high packet loss rate and long round-trip-time, particularly in the actual fast moving vehicle scenarios such as long-distance passengers transportation and high-speed trains. Therefore, in order to ensure high-quality Internet service for on-board users against problems caused by high speed, this paper focuses on a new high-speed intelligent transportation system and proposes a novel dynamic multi-link scheduling algorithm based on real-time metrics of packet loss rate and round-trip-time from cellular networks. The following theoretical analysis results show that our proposed algorithm is outperforming than other existing algorithms on average transmission time, bandwidth and link utilization.