基于认知的D2D通信激励与分配机制研究

发布时间：2018-04-21 22:23

本文选题：D2D通信 + 内容共享　；参考：《北京交通大学》2017年硕士论文

【摘要】：随着移动通信技术的不断发展,移动通信致力于为用户提供高速率、低能耗、低时延、个性化等新型服务。Device-to-Device(D2D)通信作为一种新的移动通信技术,在未来通信系统中极具发展前景,发展也日趋完善。D2D通信技术不仅能够降低终端的发射功率、增加蜂窝系统的频谱效率,还可以帮助用户下载相邻用户的文件,从而降低蜂窝网基站的负载率,提升小区系统的吞吐量。本文致力于考虑D2D通信内容共享过程中内容发送用户激励与分配机制的设计。本文提出了一种综合打分激励机制来激励更多的内容发送用户频繁地、安全地参与到D2D通信内容共享过程中。该机制不仅考虑内容发送用户的当前传输速率等情况,还考虑用户的历史发送内容情况,将历史发送情况与当前的回报值挂钩,从而达到长期激励用户的目的。另一方面,该机制根据发送内容的大小选择拥有合适传输速率的发送者来通过D2D通信传输内容。仿真结果表明,本文设计的机制可以长期的激励用户更频繁地、更安全地参与到D2D通信内容共享过程中,从而降低蜂窝网基站的负载。本文还提出了一种内容发送用户的分配制度,与本文提出的综合打分激励机制相结合,通过将分配问题转化成矩阵元素选取问题,最后通过匈牙利算法求得最优解,将各个内容发送用户合理地分配给不同的内容接收用户完成D2D通信内容共享过程,以达到全局最优。系统仿真结果表明,本文提出的D2D通信内容共享激励与分配机制达到了很好的效果,随着小区内发送用户数量的增加,被选定的发送用户三个方面的得分都在逐渐增加,并且通过匈牙利算法进行分配后,所有内容接收用户的选定发送用户的平均得分也在逐渐增加。
[Abstract]:With the continuous development of mobile communication technology, mobile communication is committed to providing users with high speed, low energy consumption, low delay, personalization and other new services. As a new mobile communication technology, mobile communication has a great development prospect in future communication systems. The development of .D2D communication technology can not only reduce the transmission power of the terminal, increase the spectrum efficiency of the cellular system, but also help users download the files of the adjacent users, thus reducing the load rate of the base station in the cellular network. Improve cell system throughput. This paper focuses on the design of incentive and allocation mechanism for content sending users in D2D communication content sharing process. In this paper, a comprehensive scoring incentive mechanism is proposed to encourage more content sender users to participate in the process of D2D communication content sharing frequently and safely. This mechanism not only considers the current transmission rate of the content sender user, but also considers the historical transmission content situation of the user, and links the historical transmission situation with the current return value so as to achieve the purpose of motivating the user for a long time. On the other hand, according to the size of the transmitted content, the mechanism selects the sender with the appropriate transmission rate to transmit the content through D2D communication. Simulation results show that the mechanism designed in this paper can encourage users to participate in D2D communication content sharing more frequently and safely for a long time, thus reducing the load of cellular base stations. This paper also proposes an allocation system for content sending users, which combines with the comprehensive scoring incentive mechanism proposed in this paper. By transforming the assignment problem into a matrix element selection problem, the optimal solution is obtained by the Hungarian algorithm. Each content sending user is assigned to different content receiving users reasonably to complete the D2D communication content sharing process in order to achieve the global optimum. The system simulation results show that the D2D communication content sharing incentive and allocation mechanism proposed in this paper has achieved good results. With the increase of the number of sending users in the cell, the scores of the three aspects of the selected sender are gradually increasing. And the average score of the selected sender of all content receiving users increases gradually after the allocation by Hungarian algorithm.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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