Extensive Cooperative Caching in D2D Integrated Cellular Networks

Peng Lin, Qingyang Song, Yao Yu, Abbas Jamalipour

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


Device-to-device (D2D) communication is a promising supplement to cellular networks, since it provides high rate transmission without changing network infrastructure. For a D2D integrated cellular network, caching popular content (e.g., multimedia files) at a base station (BS) or a D2D device near to a requesting user not only reduces content delivery delay, but also alleviates backhaul traffic load. In order to minimize content delivery delay, in this letter, we propose an extensive cooperative caching (EC-Caching) scheme, which allows inter-BS, inter-device and between-BS-and-device cooperation in content caching. Simulation results demonstrate that the extension in degree of cooperation between the caching nodes contributes significant performance gain in terms of content delivery delay and cache hit rate, especially in populated areas.

Original languageEnglish
Article number7946277
Pages (from-to)2101-2104
Number of pages4
JournalIEEE Communications Letters
Issue number9
Publication statusPublished - 12 Jun 2017
Externally publishedYes


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