摘要
终端直通(device-to-device,D2D)通信通过共享蜂窝资源可以提升频谱效率,但会产生同频干扰,导致系统吞吐量和用户的服务质量降低。针对在部分频率复用(fracti〇nalfreqUenCyreuse,FFR)蜂窝网络中多小区间的D2D链路和蜂窝链路的同频干扰问题,提出了基于优先级的资源分配方案。该方案通过对频率资源赋予不同的优先级对小区间干扰进行协调,尽量避免小区间的D2D链路和蜂窝链路间、以及D2D链路间的干扰,从而提升系统性能。仿真结果表明,基于优先级的资源分配方案改善了小区边缘用户的服务质量,提高了系统容量。
Device-to-device(D2D)communication can improve spectral efficiency by reusing licensed cellular frequency resources,but in the same time it will introduce inter-cell interference which results in the degradation of cell throughput and quality of service.A resource allocation scheme based on the priority is proposed to mitigate in-ter-cell interference in multicell uplink D2D communication underlying cellular system using fractional frequency re-use(FFR).The proposed scheme coordinates the interference from the neighboring cells(including the interfer-ence from both the cellular and D2D transmissions in the neighboring cells)by given different priority to frequency resources to enhance the performance of LTE system.The simulation results show that the proposed resource alloca-tion scheme improves the service quality of the cell edge users and increases the system throughput.
作者
尼俊红
申振涛
赵云伟
NI Jun-hong;SHEN Zhen-tao;ZHAO Yun-wei;Electrical and Electronic Engineering,North China Electric Power University;
出处
《科学技术与工程》
北大核心
2016年第30期249-252,共4页
Science Technology and Engineering
基金
国家自然科学基金项目(61302106)资助
关键词
终端直通
小区间干扰
资源分配
优先级
device-to-device
inter-cell interference
resource allocation
the priority
作者简介
尼俊红(1971—),女,博士,副教授。研究方向:宽带无线移动通信系统中的关键技术、通信网络管理。;通信作者简介:申振涛(1990—),男,硕士研究生。研究方向:终端直通通{目技术。E-mail:shenzhentao66@ 163. com。