Content-Aware Rate Control to Improve the Energy Efficiency in Mobile IPTV services

Summary To be able to deploy the mobile IPTV service, energy efficiency is an important design consideration due to the limited battery lifetime of mobile devices. Moreover, the Scalable Video Coding (SVC) scheme, which allows for data rate adaptation without reencoding, should also be considered for supporting a variety of mobile devices. This paper proposes a new streaming system, called the Content-Aware Streaming System (CASS), which improves energy efficiency by reducing the unnecessary transmission of bitstreams and by reducing the operating time of wireless network interface cards. The proposed streaming system utilizes the Peak Signal to Noise Ratio (PSNR) based on a content-aware and client buffer occupancy on the basis of a network-aware streaming system using SVC. The simulation results demonstrate the effectiveness of the proposed streaming system

Power-Constrained Fuzzy Logic Control of Video Streaming over a Wireless Interconnect

Wireless communication of video, with Bluetooth as an example, represents a compromise between channel conditions, display and decode deadlines, and energy constraints. This paper proposes fuzzy logic control (FLC) of automatic repeat request (ARQ) as a way of reconciling these factors, with a 40% saving in power in the worst channel conditions from economizing on transmissions when channel errors occur. Whatever the channel conditions are, FLC is shown to outperform the default Bluetooth scheme and an alternative Bluetooth-adaptive ARQ scheme in terms of reduced packet loss and delay, as well as improved video quality

Saving Energy in Mobile Devices for On-Demand Multimedia Streaming -- A Cross-Layer Approach

This paper proposes a novel energy-efficient multimedia delivery system called EStreamer. First, we study the relationship between buffer size at the client, burst-shaped TCP-based multimedia traffic, and energy consumption of wireless network interfaces in smartphones. Based on the study, we design and implement EStreamer for constant bit rate and rate-adaptive streaming. EStreamer can improve battery lifetime by 3x, 1.5x and 2x while streaming over Wi-Fi, 3G and 4G respectively.Comment: Accepted in ACM Transactions on Multimedia Computing, Communications and Applications (ACM TOMCCAP), November 201