摘要
无线移动用户和数据的爆炸性增长给蜂窝网络系统容量带来了巨大挑战。终端直通(Device-to-Device,D2 D)通信技术通过提高空间利用率从而提高频谱利用率,在某些场景下使移动通信变得更加直接和高效,缓解基站压力,提高用户体验。首先给出了D2D通信系统的基本概念、组成和特点,并与传统的终端直通技术进行对比。接着综述了D2D通信中的关键技术包括邻居/服务发现、模式选择、资源分配和干扰控制等。重点从安全数据传输协议、用户身份认证和物理层安全三个方面提出了D2D系统中安全机制。最后,对D2D通信技术的发展进行展望,指出未来的发展趋势。
With the explosive increase of mobile users and data traffic, the device-to-Device (D2D) communications have been proposed to be a promising technology for offloading the heavy load of cellular networks by improving spectrum efficiency.The basic concept and architecture of D2D communication systems are described and compared with traditional direct communication technologies. Then the key technologies are summarized, including peer/service discovery, mode selection, resource allocation and interference management.The secure D2D communications are proposed from the aspects of secure data sharing protocol,user identity authentication and physical-layer security.Finally,this paper forecasts the development trend of D2D communications, including in-depth research on key technologies,wide research on security mechanism, theory to practices and entry into the fifth generation mobile communication standard.
出处
《无线电通信技术》
2015年第3期6-11,共6页
Radio Communications Technology
基金
基金支持:国家自然科学基金项目(61401004)
关键词
IMT—A
终端直通
通信安全
资源分配
干扰控制
IMT-A
Device-to-Device
secure communications
resource allocation
interference management