Research On Resource Management Based On Game Theory In D2D Communication

Device-to-Device(D2D)communication refers to the direct communication between terminal devices that are close to each other and does not need to be forwarded by the base station.It is considered as the key technology of next-generation wireless communication.The direct and short distance communication feature of this technology not only saves spectrum resources,but also reduces transmission delay,power consumption,and increases the transmission rate.Effective resource management is an important guarantee for these advantages.This thesis studies the resource management scheme based on game theory in D2 D communication.The main work is summarized as follows.First,the resource allocation scheme based on non-cooperative game is studied.A more complex and also more universal resource reuse scenario was introduced.and three resource allocation schemes are proposed.The first scheme is to optimize the data rate of device-to-device user(DUE)on the premise of guaranteeing the communication quality of cellular user(CUE).The cost function in the traditional non-cooperative game is improved,and the SINR are takes into account.The scheme can improves the DUE's throughput.The second scheme aims at improving the system rate on the premise of guaranteeing the communication quality of both CUEs and DUEs.The non-cooperative game is used to adjust the power of the DUEs,at the same time the power of CUE is adjusted according to the interference degree to other DUEs.Through this way,the system throughout is improved.In the third scheme,in order to guarantee the minimum communication rate of DUEs and the minimum interference tolerance of CUEs,a non-cooperative game algorithm based on combinatorial cost function is proposed.At the same time,the power control and spectrum allocation of CUEs and DUEs are realized.This scheme can achieve higher system throughout.Secondly,the resource allocation scheme based on hierarchical game is studied.For three communication scenarios,the scheme proposes a revenue function based on the number of participants in the coalition,which reflects the fairness of resource allocation.The mode selection,spectrum allocation,and power control in D2 D communication are solved.For each scenario,the external subgame of hierarchical game adopts a hedonic coalition game to solve the problem of mode selection and spectrum allocation.The internal subgame adopts a non-cooperative game to solve the problem of power control for users.The results show that the Quality of Service(Qo S)of users is guaranteed and the system throughput is improved.