To cope with highly reliable and low latency communications’ stringent requirements and high demand for data traffic, the 3rd Generation Partnership Project (3GPP) standardization body and its main technical partners have made considerable efforts to promote many advanced cellular technologies—e.g., massive Multiple Input, Multiple Output (MIMO), dynamic spectrum sharing, and Coordinated Multipoint (CoMP) transmission and reception. Among these, CoMP, originally defined in the 3GPP’s Release 11, has been continuously developed in the newly completed 3GPP Release 16, which was frozen in July 2020. In this new standard release, CoMP, combined with Time-Sensitive Networking (TSN) technology, is positioned to accomplish reliable 5G communications and offset the performance degradation problem of cellular network operations in various frequency bands, including the unlicensed ones. On one hand, this documentation implies the 3GPP’s ambition to expand its cellular ecosystem to broader fields. On the other hand, it also exposes the performance shortage of network operations in certain frequency bands, especially for the expansion of industrial vertical applications.
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