Communication method of electronic shelf label system, system, computer device and storage medium
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Solution Overview
Problem
The existing electronic shelf label systems suffer from communication interference among multiple base stations working in parallel due to limited channel resources, leading to reduced stability and increased power consumption.
Innovation Solution
Construct synchronization sub-networks based on network topological structures and determine a maximum capacity number of base stations, allocating synchronization frame times with offsets to ensure synchronized frame transmission and data transmission without interference, and dynamically adjust local frame times based on superior base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple base stations work in parallel in an asynchronous network, then the system can cover more area and serve more electronic shelf labels, but mutual interference occurs due to limited channel resources, reducing communication stability
Solution Approach 1:
The patent divides the asynchronous network into multiple synchronization sub-networks, each with its own synchronization group containing base stations that coordinate their transmission. This segmentation allows parallel operation of multiple groups while preventing interference within each group through synchronized time slots, thus maintaining communication stability while expanding overall coverage area.
Solution Approach 2:
The patent implements periodic synchronization frames where base stations in the same synchronization group transmit at scheduled intervals with defined time offsets. This periodic action ensures that base stations do not transmit simultaneously on the same channel, eliminating mutual interference while allowing multiple groups to operate in parallel across different time periods, thereby expanding coverage without sacrificing reliability.
2Device complexity
If base stations transmit synchronization frames simultaneously, then the system complexity is reduced, but mutual interference occurs, reducing communication stability
Solution Approach 1:
The patent applies preliminary action by pre-configuring synchronization groups and assigning specific time offsets to each base station before actual data transmission begins. The server establishes the synchronization relationships in advance, so that when base stations transmit, they automatically follow the pre-planned schedule without real-time coordination complexity, maintaining low system complexity while ensuring interference-free transmission and high communication stability.
3Reliability
If the frame listening cycle of electronic shelf label is extended to ensure synchronization, then communication stability is improved, but power consumption increases
Solution Approach 1:
The patent uses periodic synchronization frames with optimized time offsets to allow electronic shelf labels to wake up at precise intervals to receive synchronization information. This periodic action enables the labels to maintain accurate synchronization with base stations while minimizing the duration they need to remain active, thus improving synchronization accuracy while reducing power consumption compared to extended continuous listening cycles.
Data Source
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AI summary
The present disclosure provides a communication method of an electronic shelf label system, a system, a computer device and a storage medium. The method includes: configuring, by a server, an offset of each of base stations in a corresponding synchronization sub-network based on neighboring relationships between all the base stations in each of the synchronization sub-networks, so that each of the base stations calculates synchronization frame transmission time in a predetermined signal transmission cycle based on the offset; calculating, by each of the base stations, idle time in a synchronization channel based on the synchronization frame transmission time, so that each of the base stations receives a target synchronization frame sent by a superior base station in the idle time of the synchronization channel. According to the present disclosure, the synchronization frames sent by all the base stations has central and adjacent feature in time, which not only ensures that each of the base stations has its synchronization frame transmission time and data transmission time and prevents the plurality of base stations from interfering with each other when they are working in parallel, but also shortens a frame listening cycle of the electronic shelf label and reduces a power consumption thereof.