Multimedia Traffic Placement under 5G radio access techniques in indoor environments

It is a challenge to support multimedia services with high Quality of Service (QoS) requirements for upcoming 5G radio access techniques that has the characteristics of Heterogeneous network Architecture, Heterogeneous Terminals and Heterogeneous Spectrum (H3ATS). Multi-view Video (MVV) consisting of multiple video streams captured by close spaced cameras is increasingly popular, permitting changeable viewpoints by playing different streams. As those close spaced cameras will capture overlapping frames (OFs) and transmit OFs in multiple streams, when switching video streams from one to another, it is redundant to transmit and receive OFs in the latter stream for base stations and users, respectively. Moreover, since the data rate requirement of a MVV with multiple streams is much higher than that of the traditional video with single-stream, base stations will consume tremendous bandwidth if the number of playing MVVs increases. To eliminate OFs and offload traffic from base stations, we propose a new MVV stream architecture called Overlapping Reduced Multi-view Video Transmission (ORMVVT) and a new network architecture named Multicast Multi-Traffic Source (MMTS) for multicast small cell networks (MSCNs). Then, an optimization problem is formulated to minimize the data rate of small cells under QoS constraint. An Offloading Based Traffic Placement (OBTP) scheme is introduced to solve the optimization problem. Simulation results show that the proposed low-complexity OBTP is able to get a higher performance than the traditional schemes in terms of bandwidth saving.