CN110446198B - Electronic label multi-base station communication method - Google Patents
Electronic label multi-base station communication method Download PDFInfo
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- CN110446198B CN110446198B CN201910781065.7A CN201910781065A CN110446198B CN 110446198 B CN110446198 B CN 110446198B CN 201910781065 A CN201910781065 A CN 201910781065A CN 110446198 B CN110446198 B CN 110446198B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to the technical field of communication. The method can judge the signal intensity, select the optimal base station for connection, and freely connect the base station and the label to effectively improve the communication efficiency and the communication range. The technical scheme is as follows: the electronic label multi-base station communication method comprises the following steps: 1) the base station sends beacon signals; 2) the electronic label scans beacon in the channel range, judges the link quality value in the received beacon, selects the beacon with the highest link quality value, and connects the beacon with the corresponding base station; 3) when receiving the connection request of the electronic label, the base station acquires the MAC address of the electronic label; 4) after the connection between the electronic label and the base station is successfully established, the address obtained by the electronic label is added into a reporting queue, the electronic label reads the self state information and the ID information after receiving the request of the base station and sends the information to the base station, and the base station forwards the data to a background after receiving the reply of the electronic label.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a multi-base-station communication method of an intelligent display system.
Background
At present, Electronic Shelf labels (Electronic Shelf labels, abbreviated as ESL) are in a development stage in China, the technology is gradually mature, and the display content of the Electronic Shelf labels can be controlled by using a 2.4G communication mode and background operation. However, the system can be applied to not only goods shelves, but also the fields of office, industry, medical treatment and the like, and the problems of short 2.4G communication distance, frequency band congestion and the like are solved by adopting a Sub1G communication mode. The system is not only limited on the shelf, but also focuses on controlling Display, so the system is named as an intelligent Display System (SD).
The SD system mainly comprises a background (server), a base station (AP) and a plurality of intelligent terminal displays (hereinafter referred to as electronic labels or labels for short), the initial SD system is in a single base station mode, an administrator issues tasks to the electronic labels in the background, the base station needs to be connected with the labels first, the label information is stored in the background by the base station, the tasks are sent to the base station by the background, the base station issues task information to corresponding labels according to task queues, and the labels receive the task information and conduct screen refreshing, upgrading and the like according to the tasks. The disadvantage of this single base station communication method is: the base station and the label are fixedly connected, when the label moves out of the communication range of the base station A and enters the communication range of the base station B, the base station and the label cannot be connected, the task cannot be sent, and overtime retransmission processing is carried out; if the retransmission is always overtime, the communication time is occupied, and the normal communication of other connectable signs is influenced. When the labels need to be installed in a large range, the current single base station control label cannot meet the requirement due to the limitation of the maximum number of the labels which can be connected with the base station and the communication distance; multiple base station control tags must be used, with one base station managing a certain number of tags within a range.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings in the prior art, and provides a method for communicating among multiple base stations of an electronic signage, which is capable of determining signal strength, selecting an optimal base station for connection, and connecting between the base station and the signage freely, so as to effectively improve communication efficiency and communication range.
The technical purpose of the invention is realized as follows:
the electronic label multi-base station communication method comprises the following steps:
1) the base station sends beacon signals;
2) the electronic label scans beacon in the channel range, judges the link quality value in the received beacon, selects the beacon with the highest link quality value, and connects the beacon with the corresponding base station;
3) when receiving the connection request of the electronic label, the base station acquires the MAC address of the electronic label;
4) after the electronic label is successfully connected with the base station, the address obtained by the electronic label is added into a reporting queue, the electronic label reads self state information and ID information and sends the information to the base station after receiving a request of the base station, and the base station forwards the data to a background after receiving a reply of the electronic label;
5) the background issues a task to the electronic label, a base station connected with the electronic label at the moment is searched, and the MAC address and the task data of the electronic label are sent to the base station;
6) after receiving the MAC address and the task data sent by the background, the base station finds the connected electronic label and sends the task data to the electronic label;
7) the electronic label receives the task data and transmits the task state to the base station, and the base station returns the task state to the background after receiving the task data.
Preferably, in step 2), the method for selecting the base station corresponding to the beacon with the highest link quality value includes:
2a) if the starting number of the base stations in the beacon is 1, not detecting the link value of the beacon received in the synchronization process;
2b) if the number of the base stations started in beacon is more than or equal to 2 and the connection is established, the maximum link value is more than the link critical value, if the synchronous link value is lower than the link critical value, the electronic label is disconnected, and rescanning is restarted;
2c) if the number of the base stations started in beacon is more than or equal to 2 and the connection is established, the maximum link value is less than the link critical value, after the connection is successful, a timer is started, and the change of the link value is not detected and judged any more during synchronization within the timed time; after timing is finished, if the synchronous link value is lower than the link critical value, the electronic label is disconnected, and re-scanning is restarted;
2d) the electronic label judges the change situation of the link value in beacon, then sends a separation request, disconnects the connection and rescans; when the base station receives the separation request of the electronic label, the electronic label is deleted from the reporting queue;
2e) and if the connection number in the base station is full, the electronic label selects other base stations for connection.
The beneficial effects of the invention are: the invention adopts a multi-base station communication scheme, the electronic tags can be connected in the communication range of a plurality of base stations, the signal intensity can be judged, and the base station with the optimal communication can be selected for connection without being influenced by the communication range of the currently connected base station; the base station and the electronic label are freely networked, and the communication efficiency and the communication range can be effectively improved.
Drawings
Fig. 1 is a flow chart of the electronic sign connecting to a base station in the present invention.
Fig. 2 is a flow chart of a background send task in the present invention.
Fig. 3 is a flowchart of a conventional single-base-station communication method.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The link threshold of the present invention is the lowest signal quality value at which a tag can successfully communicate with a base station without special interference or interference.
The maximum link value, the synchronous link value and the link critical value are respectively the maximum link quality value, the synchronous link quality value and the link critical quality value.
The multi-base station communication method of the electronic label comprises the following steps:
1) the base station sends beacon signals;
2) the electronic label scans beacon in the channel range, judges the link quality value in the received beacon, selects the beacon with the highest link quality value, and connects the beacon with the corresponding base station;
3) when receiving the connection request of the electronic label, the base station acquires the MAC address of the electronic label;
4) after the connection between the electronic label and the base station is successfully established, the address obtained by the electronic label is added into a reporting queue, the label reads self state information and ID information and sends the information to the base station after receiving a request of the base station, and the base station forwards the data to a background after receiving a reply of the label;
5) the background issues a task to the electronic label, a base station connected with the electronic label at the moment is searched, and the MAC address and the task data of the electronic label are sent to the base station;
6) after receiving the MAC address and the task data sent by the background, the base station finds the connected electronic label and sends the task data to the electronic label;
7) the electronic label receives the task data and transmits the task state to the base station, and the base station returns the task state to the background after receiving the task data.
Preferably, in step 2), the method for selecting the optimal base station includes the following steps:
2a) if the starting number of the base stations in the beacon is 1, not detecting the link value of the beacon received in the synchronization process;
2b) if the number of the base stations in beacon is more than or equal to 2 and the connection is established, the maximum link value is more than the link critical value, if the synchronous link value is less than the link critical value, the electronic label is disconnected, and the rescanning is restarted;
2c) if the starting number of the base stations in beacon is more than or equal to 2 and the connection is established, the maximum link value is less than the link critical value, and after the connection is successful, a timer is started; in the timing time, the change of the link value is not detected and judged any more during synchronization; after timing is finished, if the synchronous link value is lower than the link critical value, the electronic label is disconnected, and re-scanning is restarted;
2d) the electronic label judges the change situation of the link value in beacon, then sends a separation request, disconnects the connection and rescans. When the base station receives the separation request of the electronic label, the electronic label is deleted from the reporting queue;
2e) if the connection number in the base station is full, the electronic label selects other base stations for connection;
through multiple tests, the following results are always obtained by using the communication mode of multiple base stations for the label task issued at the same time:
example 1:
when the signal intensity is different and the connection number of the base stations is not full, the electronic label is always connected with the base station with the optimal signal. If the base station A is 10 meters on the left side of the base station B, the electronic tags a and B are placed 10 meters on the left side of the base station A, and the electronic tags a and B use the base station A to send tasks;
example 2:
when the signal intensity is the same and the connection number of the base stations is not full, the electronic label is always connected with the base station connected before. If the base station A is 10 meters on the left side of the base station B, the electronic tags a and B are placed 10 meters on the left side of the base station A, the electronic tag A is moved to A, B in the middle of the base station A, and the electronic tags a and B both use the base station A to send tasks;
example 3:
when the signal intensity is different and the connection number of the signal optimal base station is full, the electronic label is always automatically connected with other base stations. If the base station A is 10 meters on the left side of the base station B, the electronic tags a and B are placed 10 meters on the left side of the base station A, the connection number of the base station A is full, and the electronic tags a and B use the base station B to send tasks;
example 4:
when the connection number of the base stations is not full, the electronic label or the base stations move, and the electronic label is always connected with the base station with the optimal signal. If the base station A is 10 meters on the left side of the base station B, the electronic tags a and B are placed 10 meters on the left side of the base station A, the electronic tag a is moved to A, B meters on the left side of the base station B, the electronic tag a uses the base station B to send tasks, and the electronic tag B uses the base station A to send tasks;
the above description is only a preferred embodiment of the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The electronic label multi-base station communication method comprises the following steps:
1) the base station sends beacon signals;
2) the electronic label scans beacon in the channel range, judges the link quality value in the received beacon, selects the beacon with the highest link quality value, and connects the beacon with the corresponding base station;
3) when receiving a label request for connection, a base station acquires an MAC address of an electronic label;
4) after the electronic label is successfully connected with the base station, the address obtained by the electronic label is added into a reporting queue, the electronic label reads self state information and ID information and sends the information to the base station after receiving a request of the base station, and the base station forwards the data to a background after receiving a reply of the electronic label;
5) the background issues a task to the electronic label, a base station connected with the electronic label at the moment is searched, and the MAC address and the task data of the electronic label are sent to the base station;
6) after receiving the MAC address and the task data sent by the background, the base station finds the connected electronic label and sends the task data to the electronic label;
7) the electronic label receives the task data and transmits the task state to the base station, and the base station returns the task state to the background after receiving the task data;
in step 2), the method for selecting the base station corresponding to the beacon with the highest link quality value includes:
2a) if the starting number of the base stations in the beacon is 1, not detecting the link value of the beacon received in the synchronization process;
2b) if the number of the base stations in beacon is more than or equal to 2 and the connection is established, the maximum link value is more than the link critical value, if the synchronous link value is less than the link critical value, the electronic label is disconnected, and the rescanning is restarted;
2c) if the starting number of the base stations in beacon is more than or equal to 2 and the connection is established, the maximum link value is less than the link critical value; after successful connection, starting a timer, and within the timing time, not detecting and judging the change of the link value any more during synchronization; after timing is finished, if the synchronous link value is lower than the link critical value, the electronic label is disconnected, and re-scanning is restarted;
2d) the electronic label judges the change situation of the link value in beacon, then sends a separation request, disconnects the connection and rescans; when the base station receives the separation request of the electronic label, the electronic label is deleted from the reporting queue;
2e) and if the connection number in the base station is full, the electronic label selects other base stations for connection.
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| CN201910781065.7A CN110446198B (en) | 2019-08-23 | 2019-08-23 | Electronic label multi-base station communication method |
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| CN105809218A (en) * | 2016-03-11 | 2016-07-27 | 嘉兴瀚腾物联网科技有限公司 | Interactive electronic price tag control system and control method thereof |
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| CN106997427A (en) * | 2017-04-06 | 2017-08-01 | 苏州易泰勒电子科技有限公司 | A kind of communication system and its method based on electronic medicine shelf label |
| CN109089282B (en) * | 2018-07-26 | 2021-06-25 | 杭州美思特智能科技股份有限公司 | Optimal base station communication method of electronic price tag system |
| CN108924870B (en) * | 2018-08-06 | 2022-06-24 | 上海保资智能科技有限公司 | Electronic price tag using method and system |
| CN108900992B (en) * | 2018-08-06 | 2021-10-26 | 上海保资智能科技有限公司 | Electronic price tag use management method and system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015004477A1 (en) * | 2013-07-10 | 2015-01-15 | Powa Technologies Limited | Devices, systems and methods for data processing |
| CN105809218A (en) * | 2016-03-11 | 2016-07-27 | 嘉兴瀚腾物联网科技有限公司 | Interactive electronic price tag control system and control method thereof |
Non-Patent Citations (2)
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