Cross-layer packet prioritization for error-resilient transmission of IPTV system over wireless network

Abstract

This paper proposes a novel cross-layer packet prioritization scheme that overcomes the limitations of conventional video prioritization schemes for IPTV system. In the conventional schemes, the Extend profile or frame unit is used for prioritization and these incur limited uses of the video prioritization schemes or unreliable transmission of the P-frame and B-frame headers. In order to overcome these limitations, the proposed scheme uses the MPEG-2 system information and the H.264/AVC NAL header information to prioritize the important video packets including the P-frame and B-frame headers. The experimental results using a testbed demonstrated that the proposed scheme has a significant performance enhancement over the conventional video prioritization schemes in terms of packet utilization ratio for video streaming, direct frame loss ratio, and PSNR.

The Statistical Analysis of the Live TV Bit Rate

“…[16] proposed using frame frequency error optimization technique based on Ultra-high efficiency video coding. [17] proposed novel cross-layer packet prioritization scheme for error-resilient transmission. [18] suggested activating the interaction between Set Top Box (STBs) and unicast streaming for faster channel change time.…”

A Dynamic Packet Fragmentation Extension to High Throughput WLANs for Real-Time H264/AVC Video Streaming

“…Authors in [6] allocate H264/AVC frames into different IEEE 802.11e EDCA queues depending on its priority. In [7] authors extend this to MPEG-2 TS and propose per IP packet prioritization for H264/AVC.…”

“…The number of retransmissions allowed for high priority packets is eight while that for low priority packets is four. For the legacy scheme, the priority of an IP packet is high if it contains at least one high priority TS packet as defined in [7]. Otherwise, it is low.…”