Power line communication (PLC) provides ideal solution for smart things connection in smart street lighting. Comparing with 2.4GHz RF such as Wifi and ZigBee, PLC signal transmission is not affected by walls, floors and metal shielding, and thus has no "blind spots". Especially, PLBus from LME is based on advanced OFDM digital communication technology and zero-crossing transmission, offering high performance in coping with noise and interference on power line and providing high data rate, comparing with traditional technologies using single carrier and simple modulation scheme.

As shown below, PLBus smart street lighting platform consists of PLBus streetlight concentrator , controller and platform. The concentrator operates as the controller network and is responsible for managing the network, including streetlight single and dual controller registration, routine establishment, etc. The concentrator has uplink to Internet.

PLBus solutions provided by LME for smart streetlight solution  include:

• PLBus concentrator
• PLBus controller (singal and dual)
• Platform