A channel popularity oriented transmission scheme in vehicular IPTV networks

IPTV services in vehicular networks are currently attracting increasingly more attentions. One essential challenge is to efficiently utilize the limited radio resources in vehicular access networks. This paper assumes that scalable video coding (SVC) is used to encode TV channels. Since TV channels usually possess different popularities, the paper proposes a novel transmission scheme, which employs differentiated modulation and coding scheme (MCS) profiles for channels of different popularities. The principle is to use more robust MCS profiles for more popular channels while to adopt higher efficient MCS profiles for less popular channels. Comparative simulation experiments are conducted and show that the proposed scheme can effectively and efficiently improve the gross channel availability (GCA) up to 10% compared to the baseline method.