摘要
未来5G无线通信系统中,海量连接(MMC,Massive Machine Communication)将是其中一个非常重要的场景。而使用低成本、低功耗终端来实现海量连接是关键也是其面临的主要挑战。本文提出一种新的非正交接入方案:多用户共享接入(MUSA,Multi-User Shared Access)。MUSA是一种基于相对很短的复数域多元码(序列)的非正交多址接入方案,可以高效地工作在"免调度"的上行接入模式中,并能进一步简化上行接入的其他流程,特别适合低成本、低功耗实现海量连接。
The future of the 5G wireless communication system, a huge number of connections （MMC, massive machine communication） is one of the most important scene. The use of low cost, low power consumption to achieve the terminal mass connection is a major challenge faced is the key. This paper presents a new non orthogonal access scheme： multi user shared access （MUSA, multi-user shared access）. MUSA is a complex domain relatively short code （sequence） based on multiple non orthogonal multiple access scheme, can work efficiently in the ＂upstream access mode free scheduling＂, and other processes can further simplify the uplink access, especially suitable for low cost, low power consumption to achieve massive connection.
出处
《电信网技术》
2015年第5期28-31,共4页
Telecommunications Network Technology
关键词
海量连接
非正交多址
多用户共享接入
免调度
massive machine communication（MMC）, non-orthogonal multiple access（NOMA）, multi-user shared access （MUSA）, grant-free access
