Abstract
The 6G Power Internet of Things (PIoT) is considered to be the key enabler for smart grid. In 6G PIoT, ultra-reliable low-latency communications (URLLC) can provide deterministic service guarantee for applications with stringent latency and reliability requirements. In recent years, the concept, use cases, and key technologies of URLLC have been thoroughly investigated by 3GPP, while the characteristics of PIoT are not considered in the standardization yet. Confronted with such a problem, this article analyzes the application scenarios and service requirements of URLLC for 6G PIoT, summarizes the key technologies and standardization of 5G/B5G URLLC and end-to-end URLLC guarantee technologies, and outlines the possible evolution directions of URLLC in 6G.
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