Graduate School and Research Center in Digital Sciences

D2D-aided multi-antenna multicasting

Mursia,Placido; Atzeni,Italo; Gesbert, David; Kobayashi, Mari

ICC 2019, 53rd IEEE International Conference on Communications, 20-24 May 2019, Shanghai, China

Best Paper Award

Multicast services, whereby a common valuable message needs to reach a whole population of user equipments (UEs), are gaining attention on account of new applications such as vehicular networks. As it proves challenging to guarantee decodability by every UE in a large population, service reliability is indeed the Achilles' heel of multicast transmissions. To circumvent this problem, a two-phase protocol capitalizing on device-to-device (D2D) links between UEs has been proposed, which overcomes the vanishing behavior of the multicast rate. In this paper, we revisit such D2D-aided protocol in the new light of precoding capabilities at the base station (BS). We obtain an enhanced scheme that aims at selecting a subset of UEs who cooperate to spread the common message across the rest of the network via D2D retransmissions. With the objective of maximizing the multicast rate under some outage constraint, we propose an algorithm with provable convergence that jointly identifies the most pertinent relaying UEs and optimizes the precoding strategy at the BS.

Document Doi Bibtex

Title:D2D-aided multi-antenna multicasting
Keywords:Cooperative communications, device-to-device, multicasting, precoding.
Department:Communication systems
Eurecom ref:5771
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Bibtex: @inproceedings{EURECOM+5771, doi = {}, year = {2019}, title = {{D}2{D}-aided multi-antenna multicasting}, author = {{M}ursia,{P}lacido and {A}tzeni,{I}talo and {G}esbert, {D}avid and {K}obayashi, {M}ari}, booktitle = {{ICC} 2019, 53rd {IEEE} {I}nternational {C}onference on {C}ommunications, 20-24 {M}ay 2019, {S}hanghai, {C}hina}, address = {{S}hangha{\"i}, {CHINA}}, month = {05}, url = {} }
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