TY - GEN
T1 - Cache aided wireless networks
T2 - 50th Annual Conference on Information Systems and Sciences, CISS 2016
AU - Sengupta, Avik
AU - Tandon, Ravi
AU - Simeone, Osvaldo
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/4/26
Y1 - 2016/4/26
N2 - We investigate the fundamental information theoretic limits of cache-aided wireless networks, where edge nodes (or transmitters) are endowed with caches that can store popular content such as multimedia files. This architecture aims to localize popular multimedia content by proactively pushing it closer to the edge of the wireless network, thereby alleviating backhaul load. An information theoretic model of such networks is presented, that includes the introduction of a new metric, namely normalized delivery time (NDT), which captures the worst case time to deliver any requested content to the users. We present new results on the trade-off between latency, measured via the NDT, and the cache storage capacity of the edge nodes. In particular, a novel information theoretic lower bound on NDT is presented for cache aided networks. The optimality of this bound is shown for several system parameters.
AB - We investigate the fundamental information theoretic limits of cache-aided wireless networks, where edge nodes (or transmitters) are endowed with caches that can store popular content such as multimedia files. This architecture aims to localize popular multimedia content by proactively pushing it closer to the edge of the wireless network, thereby alleviating backhaul load. An information theoretic model of such networks is presented, that includes the introduction of a new metric, namely normalized delivery time (NDT), which captures the worst case time to deliver any requested content to the users. We present new results on the trade-off between latency, measured via the NDT, and the cache storage capacity of the edge nodes. In particular, a novel information theoretic lower bound on NDT is presented for cache aided networks. The optimality of this bound is shown for several system parameters.
KW - 5G
KW - Caching
KW - Degrees of freedom
KW - Latency
UR - http://www.scopus.com/inward/record.url?scp=84992426938&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84992426938&partnerID=8YFLogxK
U2 - 10.1109/CISS.2016.7460522
DO - 10.1109/CISS.2016.7460522
M3 - Conference contribution
AN - SCOPUS:84992426938
T3 - 2016 50th Annual Conference on Information Systems and Sciences, CISS 2016
SP - 320
EP - 325
BT - 2016 50th Annual Conference on Information Systems and Sciences, CISS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 16 March 2016 through 18 March 2016
ER -