In next generation Internet-of-Things, the overhead introduced by grant-based multiple
access protocols may engulf the access network as a consequence of the unprecedented …

Space–air–ground-integrated networks (SAGINs) are receiving a lot of attention as a
candidate for an extension to nonterrestrial networks beyond the limit of terrestrial networks …

多样性和多元性是宇宙发展的第一特征. 当前网络技术发展始终未能脱离基于单一体制自我演进
或更替换代发展的基本范式, 极大地制约了以“人网物” 为对象, 计算/存储/传送一体化为手段的 …

Massive multiple access schemes, capable of serving a large number of uncoordinated
devices while fulfilling reliability and latency constraints, are proposed. The schemes belong …

From a system-level point of view, a grant-free random access protocol for latency critical
internet of thing (IoT) must be designed to trade resource efficiency and target performance …

Fifth generation (5G) networks provide connectivity for several services including enhanced
mobile broadband (eMBB), ultra-reliable low latency communication (URLLC) and massive …

In this letter, we propose a novel probabilistic repetition scheme for the uplink massive MIMO
system with grant-free access. Compared with canonical K-repetition, the proposed scheme …

With the rapid development of 5G technology, numerous intelligent terminals can be
successively connected to a network. This brings significant challenges to existing network …

Massive multiple-input multiple-output (MIMO) assisted grant-free access is a compelling
approach to support uplink ultra-reliable low-latency communications (URLLCs). It is a …

The design of highly scalable multiple access schemes is a main challenge in the evolution
towards future massive machine-type communications, where reliability and latency …