Convergence rate control for distributed multi-hop wireless mesh networks
Computers and Electrical Engineering
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In the past few years, we have seen a global flurry of the Internet in the rapid roll-out of multimedia—the commercial products such as PPlive, YouTube, and Skype have occupied a large portion of Internet bandwidth. One reason behind the continual growth of multimedia services is due to the increasingly deployed and offered broadband networks. Besides the traditional wired end users, Internet service providers (ISPs) are expected to provide multimedia services, especially video streaming, to wireless end users as well in that it allows ISPs to strengthen their competitiveness by offering these new services. However, the existing solutions to multimedia in wired networks cannot directly apply to wireless networks with lower bandwidth, higher latency, and higher burst error rate. Furthermore, these services could suffer from user's mobility and the heterogeneity caused by different wireless technologies (e.g. CDMA2000, WCDMA, TD-SCDMA, Wi-Fi, Long-Term Evolution (LTE), and WiMAX). This paper surveys several key issues of mobile multimedia, focusing on multirate multicast, scalable video coding (SVC), and QoS management. Besides, the opportunities as well as the challenges of providing multimedia services in the next generation wireless mobile systems—3GPP LTE—are investigated. Copyright © 2011 John Wiley & Sons, Ltd.