TY - GEN
T1 - Beyond cut-set bounds - The approximate capacity of D2D networks
AU - Sengupta, Avik
AU - Tandon, Ravi
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/10/27
Y1 - 2015/10/27
N2 - Device-to-Device (D2D) communication is emerging as a viable solution for alleviating the severe capacity crunch in content-centric wireless networks. D2D encourages backhaul-free communication directly between devices with similar content requirements grouped into clusters. In this work, a self-sustaining D2D network is considered, where a set of commonly requested files are completely stored within the collective devices memories in a cluster and file requests from devices are serviced by local inter-device multicast transmissions. For such a network, new information theoretic converse results are developed, in the form of a lower bound on the minimum D2D multicast rate as a function of the storage per device. The proposed converse is then used to characterize the approximate tradeoff between the device storage and D2D multicast rate to within a constant multiplicative gap of 8.
AB - Device-to-Device (D2D) communication is emerging as a viable solution for alleviating the severe capacity crunch in content-centric wireless networks. D2D encourages backhaul-free communication directly between devices with similar content requirements grouped into clusters. In this work, a self-sustaining D2D network is considered, where a set of commonly requested files are completely stored within the collective devices memories in a cluster and file requests from devices are serviced by local inter-device multicast transmissions. For such a network, new information theoretic converse results are developed, in the form of a lower bound on the minimum D2D multicast rate as a function of the storage per device. The proposed converse is then used to characterize the approximate tradeoff between the device storage and D2D multicast rate to within a constant multiplicative gap of 8.
KW - Optical network units
UR - http://www.scopus.com/inward/record.url?scp=84961782647&partnerID=8YFLogxK
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U2 - 10.1109/ITA.2015.7308969
DO - 10.1109/ITA.2015.7308969
M3 - Conference contribution
AN - SCOPUS:84961782647
T3 - 2015 Information Theory and Applications Workshop, ITA 2015 - Conference Proceedings
SP - 78
EP - 83
BT - 2015 Information Theory and Applications Workshop, ITA 2015 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - Information Theory and Applications Workshop, ITA 2015
Y2 - 1 February 2015 through 6 February 2015
ER -