A Low-Hit-Zone Frequency-Hopping Communication System for Random Access of Power Internet-of-Things

The communications networks are the basic component for the information collections and transmission in power internet-of-things (IoTs). To meet the development requirements of multiple power service in the future, wireless communications technique which has the merits such as flexibility and extensibility, is one of the potential solutions for power IoTs. The power IoT has the characteristics of large-scale power node access (large-scale connectivity), random access and high security and reliability. A frequency-hopping (FH) technique with low-hit-rate FH pattern in random access is proposed for power IoTs. The construction algorithm of such FH pattern is proposed by the combination and shift operation on a conventional FH sequence. By the numerical and simulations, the properties of the proposed FH pattern and the error-rate of FH-based power IoTs are evaluated. The analysis reveals that the FH networks employing the proposed FH pattern can well meet the requirements of the power IoTs (e.g., massive connectivity and high reliability), which will be widely implemented in the future applications.