Adaptive group based intrablock refresh technique for MBMS systems

Mobile phone besides being communication device is being transformed to another role as an entertainment device. Mobile devices enable the user to access entertainment such as TV anywhere and not limit it to just homes. It is expected that the traditional broadcast multimedia content is multicast instead of unicast to the mobile users to conserve bandwidth. 3GPP is currently working on a standard for multimedia broadcast and multicast services (MBMS). This paper presents an intra-refresh based error resilience technique for video delivery over MBMS. We propose an adaptive intra block refresh rate technique based on the loss statistics from the multicast group and dynamically partitioning multicast groups. The proposed technique improves average PSNR of the received video for all the multicast groups