期刊
IEEE TRANSACTIONS ON COMMUNICATIONS
卷 61, 期 8, 页码 3541-3551出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCOMM.2013.071013.120787
关键词
Device-to-device communications; spectrum sharing; maximum weighted bipartite matching
资金
- National Science Foundation (NSF) [1247545]
- European Sharing project
- National Basic Research Program of China (973 Program) [2012CB316003]
- National High-tech R&D Program of China [2012AA011402]
- NSFC [61071098]
- Doctor Foundation of Ministry of Education [20110185130003]
- China Scholarship Council (CSC)
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1247545] Funding Source: National Science Foundation
In cellular networks, proximity users may communicate directly without going through the base station, which is called Device-to-device (D2D) communications and it can improve spectral efficiency. However, D2D communications may generate interference to the existing cellular networks if not designed properly. In this paper, we study a resource allocation problem to maximize the overall network throughput while guaranteeing the quality-of-service (QoS) requirements for both D2D users and regular cellular users (CUs). A three-step scheme is proposed. It first performs admission control and then allocates powers for each admissible D2D pair and its potential CU partners. Next, a maximum weight bipartite matching based scheme is developed to select a suitable CU partner for each admissible D2D pair to maximize the overall network throughput. Numerical results show that the proposed scheme can significantly improve the performance of the hybrid system in terms of D2D access rate and the overall network throughput. The performance of D2D communications depends on D2D user locations, cell radius, the numbers of active CUs and D2D pairs, and the maximum power constraint for the D2D pairs.
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