用于电力物联网随机接入的低碰撞跳频通信系统

通信网络是电力物联网数据采集和信息传输的必要组成部分。为了适应未来多种电力业务爆发式发展,接入灵活和扩展性强的无线通信技术是电力物联网发展方向之一。面向电力物联网节点大规模接入、接入时刻随机、信息传输安全可靠性高等特点,提出一种随机接入下具有低碰撞概率的电力跳频通信方式,采用移位跳频序列组合方法给出了该跳频图案的产生方法。并通过理论计算和仿真给出了这类跳频序列特性和电力跳频通信系统传输误码率性能。通过分析验证了所提新型低碰撞跳频序列及其通信系统可以满足电力物联网大规模接入、高可靠通信需求,具有较好的应用前景。

Low-hit frequency-hopping communication systems for power Internet of things random access

The communication network is an essential component of the data acquisition and information transmission in power Internet of things (IoT).To meet the development requirements of multiple power service in the future, the wireless communication technique with flexible-access and high scalability is one of the development directions for power IoT.Due to the features of large-scale access, random access time, high security and reliability for information transmission of power IoT, a frequency-hopping (FH) technique with low-hit rate for random access was proposed.The construction algorithm of such FH pattern was based upon the combination and shift operation of conventional FH sequences.By the theoretical arithmetic and numerical simulation, the properties of the proposed FH pattern and the error-rate of the FH-based power IoT were evaluated.The analysis reveals that the new class of FH sequences and the system can meet the requirements of large-scale access and highly reliable communication for the power IoT, which has good application prospects.