基于距离和系统吞吐量最大化的D2D上行链路资源分配方案  

Uplink Resource Allocation Scheme Based on Distances and Maximized System Throughput for D2D Communications

作　　者：袁雨薇 侯嘉[1,2] YUAN Yu-wei;HOU Jia(School of Electronics&Information,Soochow University,Suzhou 215006,China;Yangze Delta Region Institute(Quzhou),University of Electronic Science and Technology of China,Quzhou 324000,China)

机构地区：[1]苏州大学电子信息学院,苏州215006 [2]电子科技大学长三角研究院(衢州),衢州324000

出　　处：《科学技术与工程》2023年第32期13881-13888,共8页Science Technology and Engineering

基　　金：国家自然科学基金(62071319)。

摘　　要：终端直连(device-to-device,D2D)通信的研究主要关注的是蜂窝用户(cellular user,CU)和D2D用户之间存在的干扰问题,而解决该问题的方法是进行合理的资源分配,但以往的研究大都仅考虑D2D用户之间的通信质量或仅考虑CU的可靠性,却忽视了系统总吞吐量和资源复用效率的优化。基于D2D用户、CU和基站(base station,BS)三者间的通信距离,提出了一种资源分配方案,该方案能结合资源复用函数矩阵进行预分组和资源选择,综合降低CU对D2D用户的干扰(cellular-to-D2D,C2D)和D2D用户对CU的干扰(D2D-to-cellular,D2C),同时保证CU和接入的D2D用户对都满足各自的通信服务质量(quality-of-service,QoS)要求。数值仿真结果表明:该方案与贪婪启发式算法相比,系统总吞吐量可以提升约4%,系统平均复用效率提高2倍以上。The research on device-to-device(D2D)communication mainly focus on the interference between cellular user(CU)and D2D users.Resource allocation is the main method to solve the problem.However,most of the previous studies only considered the communication quality of D2D users or the reliability of CU and ignored the total system throughput and the resource reuse efficiency.A resource allocation scheme based on the distance between D2D users,CU and base station(BS)was proposed,which combined resource reuse function matrix for prepacking and resource selection.The interference of CU to D2D users(C2D)and the interference of D2D users to CU(D2C)were comprehensively reduced.At the same time,both CU and D2D users were guaranteed to meet their quality-of-service(QoS)requirements respectively.Compared with the greedy heuristic algorithm,numerical results show that the total throughput of the system is improved by about 4%,and the average multiplexing efficiency of the system is improved by more than 2 times in this scheme.

关 键 词：终端直连(D2D)通信 距离 上行链路 干扰缓解 资源分配 

分 类 号：TN929.5[电子电信—通信与信息系统]