Optimized Network-coded Scalable Video Multicasting over eMBMS Networks
This work addresses the problem of improving video multicast efficiency for users in 4G networks, representing an incremental advancement in resource allocation methods.
The paper tackles efficient multicasting of layered video over 4G networks by proposing a resource allocation framework that jointly optimizes communication parameters and an unequal error protection network coding scheme, resulting in significantly increased service coverage compared to conventional multi-rate transmission strategies.
Delivery of multicast video services over fourth generation (4G) networks such as 3GPP Long Term Evolution-Advanced (LTE-A) is gaining momentum. In this paper, we address the issue of efficiently multicasting layered video services by defining a novel resource allocation framework that aims to maximize the service coverage whilst keeping the radio resource footprint low. A key point in the proposed system mode is that the reliability of multicast video services is ensured by means of an Unequal Error Protection implementation of the Network Coding (UEP-NC) scheme. In addition, both the communication parameters and the UEP-NC scheme are jointly optimized by the proposed resource allocation framework. Numerical results show that the proposed allocation framework can significantly increase the service coverage when compared to a conventional Multi-rate Transmission (MrT) strategy.