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The device-to-device (D2D) communication theoretically provides both thecellular traffic offloading and convenient content delivery directly amongproximity users. However, in practice, no matter in underlay or overlay mode,the employment of D2D may impair the performance of the cellular links.Therefore, it is important to design a spectrum sharing scheme, under which theperformance of both links can be improved simultaneously. In this paper, weconsider the cell-edge user (CEU) scenario, where both sides have the demand toimprove the quality of experience or service. Therefore, CEUs and D2D usersboth have intentions to form pairs, namely, CEU-D2D pairs, to cooperatemutually. Different from the conventional equilibrium point evaluation, thestable matching between D2D users and CEUs are formulated under matching theoryframework instead. For each CEU-D2D pair, a two-stage pricing-based Stackelberggame is modeled to describe the willingness to cooperate, where the win-wingoal is reached finally.

Cooperative Spectrum Sharing Between D2D Users and Edge-Users: A Matching Theory Perspective