Coalitional Game Framework for Content Distribution Using Device-to-device Communication
Aditya MVS, Chitrarth Shrivastava, Gaurav S. Kasbekar

TL;DR
This paper models cooperative content distribution in cellular networks with D2D communication using coalitional game theory, analyzing stability conditions and demonstrating energy savings through cooperation.
Contribution
It introduces a coalitional game framework for D2D content sharing, analyzing stability of cooperation and providing conditions for non-empty core and stable partitions.
Findings
Grand coalition may be unstable under Model A.
Conditions for non-empty core are identified.
Cooperation significantly reduces energy expenditure.
Abstract
We consider a set of cellular users associated with a base station (BS) in a cellular network that employs Device-to-device (D2D) communication. A subset of the users request for some files from the BS. Now, some of the users can potentially act as relays and forward the requested files, or partitions of files, from the BS to some of the requesting users (destination nodes) over D2D links. However, this requires cooperation among the cellular users. In this paper, we seek conditions under which users have an incentive to cooperate with each other. We model the above scenario using the frameworks of cooperative game theory and stable partitions in coalitional games. We consider two different models for file transfer within a coalition: (i) Model A, in which the BS can split a file into multiple partitions and send these partitions to different relays, which multicast the partitions to…
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