In this paper, we investigate the cooperation issue via spectrum sharing when employing the physical layer security concept into the Device-to-Device (D2D) communications underlaying cellular network. Different from previously related works, we consider a more general interference case that multiple D2D pairs can access the same resource block (RB) and one D2D pair is also permitted to access multiple RBs, and provide a novel cooperation mechanism in the investigated D2D communications underlaying cellular network. Furthermore, we formulate the provided cooperation mechanism among cellular communication links and D2D pairs as a coalitional game. Then, based on a newly defined Max-Coalition order in the constructed game, we further propose a merge-and-split based coalition formation algorithm for cellular communication links and D2D pairs to achieve efficient and effective cooperation, leading to both improved system secrecy rate and social welfare. Simulation results indicate the efficiency of the designed cooperation mechanism and the proposed merge-and-split based coalition formation algorithm.
|Original language||English (US)|
|Title of host publication||2015 IEEE Global Communications Conference, GLOBECOM 2015|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - 2015|
|Event||58th IEEE Global Communications Conference, GLOBECOM 2015 - San Diego, United States|
Duration: Dec 6 2015 → Dec 10 2015
|Name||2015 IEEE Global Communications Conference, GLOBECOM 2015|
|Other||58th IEEE Global Communications Conference, GLOBECOM 2015|
|Period||12/6/15 → 12/10/15|
Bibliographical noteFunding Information:
This work was supported in part by the National Natural Science Foundation of China under Grants 61571020 and 61172105; by the National 973 Project under Grant 2013CB336700; by the National 863 Project under Grants 2014AA01A706 and SS2015AA011306; by the National Natural Science Foundation under Grant CNS-1343189; and by the Major Project from Beijing Municipal Science and Technology Commission under Grant D151100000115004.