Method and system for electronic shelf label network access and roaming communication

A system for electronic shelf label network access and roaming communication, comprising:

• an electronic shelf label, base stations and a background server, and being configured to implement a method for electronic shelf label network access and roaming communication,
• wherein the method for electronic shelf label network access and roaming communication comprises:
• periodically sending, by an electronic shelf label and with a slow period T1, heartbeat signals to base stations, periodically receiving, by the electronic shelf label and with a period P1, base station signals, recording, by the electronic shelf label, power of the base station signals, and comparing the power of the base station signals received by the electronic shelf label at different time points to judge whether the electronic shelf label enters a base station coverage area or whether the electronic shelf label roams between base station coverage areas;
• and
• periodically sending, by the electronic shelf label and with a fast period T2, the heartbeat signals to the base stations if it is judged that the electronic shelf label enters a base station coverage area or roams between base station coverage areas, reporting, by the base stations, the received heartbeat signals to a background server, and selecting, by the background server, an optimal base station for communication with the electronic shelf label based on the power of the heartbeat signals received by the base stations.