We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
VIDEO DELIVERY OVER WIRELESS NETWORKS: EXPLOITING NETWORK HETEROGENEITY AND CONTENT COMMONALITY.
- Authors
Avestimehr, Salman; Tsuhan Chen; Lashgari, Sina; Nwana, Amandianeze; Rahman, Md. Saifur; Unal, Sinem; Wagner, Aaron B.
- Abstract
We discuss three opportunities to improve the efficiency of video transmission over wireless networks. First, we consider the opportunities that arise from exploiting network heterogeneity, in particular from access to multiple network connections at the users. We consider a new metric of timely throughput that captures the strict per-packet deadline requirement of real-time video traffic, and develop communication protocols that maximize the timely throughput of heterogeneous wireless networks. Next, we consider the gains that can be obtained by multicasting content that is being simultaneously demanded by several users at a single base station. We demonstrate that if multiple users, who are associated with the same Wi-Fi* access point, request the same video at around the same time, then one can substantially reduce the amount of downlink traffic by combining the transmissions instead of using separate unicasts. Finally, we focus on the potential gains from being able to correctly predict what video is going to be watched by users in a network. We postulate that in most networks, the pattern of video requests would resemble that of viral infections in a given population. Using such approximation, we develop new algorithms for predicting future requests of users, and utilizing these predictions for caching.
- Subjects
WIRELESS communications; VIDEO processing; DATA transmission systems; INTERNET protocols; DATA packeting; REAL-time computing
- Publication
Intel Technology Journal, 2015, Vol 19, Issue 1, p120
- ISSN
1535-864X
- Publication type
Article