Protocoles de Transport Pour la Diffusion Vidéo Temps-réel Sur Lien Sans-fil

Résumé du livre

Real time communications have, in the last decade, become a highly relevant component of Internet applications and services, with both interactive (voice and video) communications and streamed content being used by people in developed and developing countries alike. Due to the proliferation of mobile devices, wireless media is becoming the means of transmitting a large part of this increasingly important real time communications traffic. Wireless has also become an important technology in developing countries (and remote areas of developed countries), with satellite communications being increasingly deployed for traffic backhaul and ubiquitous connection to the Internet. A number of issues need to be addressed in order to have an acceptable service quality for real time communications in wireless environments. In addition to this, the availability of multiple wireless interfaces on mobile devices presents an opportunity to improve and further exacerbates the issues already present on single wireless links. Mitigation of link errors originating from the wireless media, addressing packet reordering, jitter, minimising the link and buffering (required to deal with reordering or jitter) delays, etc. all contribute to lowering user's quality of experience and perception of network quality and usability. Therefore in this thesis, we consider improvements to transport protocols for real time communications and streaming services to address these problems.