CN112821970B - Electronic price tag channel selection method, electronic price tag channel selection equipment and computer storage medium - Google Patents
Electronic price tag channel selection method, electronic price tag channel selection equipment and computer storage medium Download PDFInfo
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- CN112821970B CN112821970B CN202011635719.4A CN202011635719A CN112821970B CN 112821970 B CN112821970 B CN 112821970B CN 202011635719 A CN202011635719 A CN 202011635719A CN 112821970 B CN112821970 B CN 112821970B
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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
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The invention discloses a method, equipment and a computer storage medium for selecting an electronic price tag channel, which are characterized in that a timer of a preset frequency sweeping period is started through an electronic price tag, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless Received Signal Strength (RSSI) value of a currently used communication channel; comparing the current RSSI value obtained by current measurement with a preset signal strength value; according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used; the electronic price tag can select and use the channel with good communication quality, the network communication quality of the electronic price tag is improved, the stability of the communication connection between the electronic price tag and the base station is ensured, the data update failure caused by the weak wireless signal intensity of the channel connected with the base station is prevented, and the occurrence of the network drop condition is avoided.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a method and apparatus for selecting an electronic price tag channel, and a computer storage medium.
Background
At present, the electronic price tag needs to search all channels of 2.4G in sequence, select available channels and register for network access, and then perform corresponding data transmission. Because the base station is arranged at a fixed position in advance through the network cable, when the position of the electronic price tag is moved and changed, the network environment of the electronic price tag is changed, and at the moment, the signal quality of the originally selected channel of the electronic price tag may be poor, which seriously affects the updating of the corresponding data of the electronic price tag and even occurs the condition of network disconnection. Therefore, how to re-perform channel selection by the electronic price tag becomes one of the problems to be solved in the present day.
Disclosure of Invention
The invention provides a method, equipment and a computer storage medium for selecting an electronic price tag channel, which aim to select and use a channel with good communication quality by an electronic price tag.
An embodiment of the present invention provides a method for selecting an electronic price tag channel, where the method includes:
the electronic price tag starts a timer of a preset frequency sweeping period, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel;
Comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and the electronic price tag redetermines a communication channel which is currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value.
Optionally, the electronic price tag channel selection method further includes:
and after the electronic price tag is started for the first time, performing full-frequency scanning, selecting a channel with the largest RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the size of the RSSI value, recording channel information of the high-quality channels, storing the channel information in a corresponding storage list, and storing the channel information in a preset storage area of the electronic price tag.
Optionally, the recorded channel information of the premium channel includes:
channel number, channel RSSI value, and base station ID for the channel.
Optionally, the determining, by the electronic price tag, the communication channel currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value includes:
according to the comparison result of the current RSSI value and the preset signal strength value, when the electronic price tag determines that the corresponding communication channel needs to be reselected, selecting the channel range to be scanned;
In the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel in the channel range, and the maximum value of the measured RSSI value of each communication channel is obtained;
and the electronic price tag selects a channel corresponding to the maximum value of the RSSI value as a reselected communication channel.
Optionally, the determining, by the electronic price tag, the communication channel currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value includes:
the measured current RSSI value is marked as V1, the upper limit value of the preset signal strength value is marked as Vmax, the lower limit value of the preset signal strength value is marked as Vmin, and a comparison result of the current RSSI value and the preset signal strength value is obtained;
if the current RSSI value V1 satisfies: v1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and a corresponding communication channel is reselected to join a network;
if the current RSSI value V1 satisfies: v1 is larger than Vmax, the electronic price tag does not measure other channels, and the current communication channel is continuously used;
if the current RSSI value V1 satisfies: and if Vmin is less than V1 and less than or equal to Vmax, determining a scanning channel range according to the current RSSI value V1 of the currently used communication channel obtained by measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network, and further determining the communication channel required to be used currently.
Optionally, the electronic price tag initiates full frequency scanning, and reselects a corresponding communication channel to join a network, including:
and the electronic price tag initiates full-frequency scanning, acquires RSSI values of all channels obtained by scanning, acquires the maximum value in the RSSI values, and selects a channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
Optionally, the determining the scanning channel range according to the current RSSI value V1 of the currently used communication channel obtained by measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag first accesses the internet, further determining a currently required communication channel includes:
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is larger than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price tag is as follows: scanning other channels stored in a storage list in advance when the electronic price tag is started up for scanning for the first time, and determining a communication channel which is required to be used currently according to a scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is smaller than or equal to Vn, the scanning range determined by the electronic price tag is as follows: and full-frequency scanning, and reselecting a corresponding communication channel to join the network according to a scanning result.
Optionally, the scanning the other channels stored in the storage list in advance when the electronic price tag is first turned on and scanned, and determining a communication channel currently required to be used according to a scanning result of the other channels includes:
scanning other channels stored in advance when the electronic price tag is started up for scanning for the first time, and acquiring RSSI values corresponding to the other channels respectively;
if the RSSI values of other channels are smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all channels obtained by scanning, acquiring the maximum value in the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a redetermined communication channel;
and if the RSSI value of the other channels is larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of the other channels as a redetermined communication channel.
A second aspect of the present invention provides an electronic price tag channel selection device, the device including a processor and a memory; the memory is used for storing executable programs; the processor is configured to execute the executable program to implement the electronic price tag channel selection method.
A third aspect of the embodiments of the present invention provides a computer storage medium having stored thereon an executable program that when executed implements the electronic price tag channel selection method.
The embodiment of the invention has the following beneficial effects:
according to the electronic price tag channel selection method, the electronic price tag channel selection equipment and the computer storage medium, a timer with a preset frequency sweeping period is started through the electronic price tag, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel; comparing the current RSSI value obtained by current measurement with a preset signal strength value; according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used; the electronic price tag can select and use the channel with good communication quality, the network communication quality of the electronic price tag is improved, the stability of the communication connection between the electronic price tag and the base station is ensured, the data update failure caused by the weak wireless signal intensity of the channel connected with the base station is prevented, and the occurrence of the network drop condition is avoided.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention.
Fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of an electronic price tag network architecture according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a change of an electronic price tag network environment according to an embodiment of the present invention.
Fig. 5 is a method flowchart of an implementation manner of an electronic price tag channel selection method according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an electronic price tag channel selection device according to an embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.
The terminal may be implemented in various forms. For example, the terminals described in the present invention may include mobile terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs, desktop computers, and the like.
The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention, the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The following describes the components of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, global System for Mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division Duplex Long term evolution), and TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division Duplex Long term evolution), etc.
WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of a mobile terminal, and can be omitted entirely as required within a range that does not change the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.
The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. In particular, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.
Further, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.
The interface unit 108 serves as an interface through which at least one external device can be connected with the mobile terminal 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.
Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based will be described below.
Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.
Specifically, the UE201 may be the terminal 100 described above, and will not be described herein.
The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. The eNodeB2021 may be connected with other eNodeB2022 by a backhaul (e.g., an X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access from the UE201 to the EPC 203.
EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. The MME2031 is a control node that handles signaling between the UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.
Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present invention is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and the communication network system, various embodiments of the method of the present invention are provided.
Fig. 3 is a schematic diagram of an electronic price tag network architecture according to an embodiment of the present invention, as shown in fig. 3. In the application scenario shown in fig. 3, the base station is arranged at a fixed location through the network cable, so when the electronic price tag moves, the signal strength of the currently connected base station of the electronic price tag also changes. Fig. 4 is a schematic diagram of a change in network environment of an electronic price tag according to an embodiment of the present invention, as shown in fig. 4. When the electronic price tag moves, the corresponding network environment changes, so that the communication quality of wireless network communication between the electronic price tag and the base station may also change.
For the above situation, as shown in fig. 5, fig. 5 is a method flow chart of an implementation manner of an electronic price tag channel selection method provided by the embodiment of the present invention. In the embodiment illustrated in fig. 5, the electronic price tag channel selection method may be implemented as steps S10-S30 described below.
Step S10, the electronic price tag starts a timer of a preset frequency sweeping period, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel.
And step S20, comparing the current RSSI value obtained by current measurement with a preset signal strength value.
And step S30, the electronic price tag redetermines a communication channel which is currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value.
In the embodiment of the invention, aiming at the electronic price tag which is accessed to the network, a corresponding timer is started according to a preset frequency sweep period, for example, the preset frequency sweep period is five minutes; when the preset sweep period is reached, the electronic price tag measures a wireless received signal strength (Received Signal Strength Indication, RSSI) value of the currently used communication channel. And comparing the current RRSI value of the current communication channel obtained by current measurement with a preset signal strength value to judge the communication quality of the current communication channel. In the embodiment of the invention, the preset signal strength value can be configured according to the specific application scene of the electronic price tag and/or the communication requirement of the electronic price tag and the base station, and the embodiment of the invention does not limit the specific value of the preset signal strength value. And determining whether to continue using the current communication channel or reselect a new communication channel by the electronic price tag according to the comparison result of the current RSSI value and the preset signal strength value.
In one embodiment, for an electronic price tag which is started up and used for network access for the first time, full-frequency scanning is performed after the electronic price tag is started up for the first time, a channel with the largest RSSI value is selected as a currently used communication channel, a preset number of high-quality channels are simultaneously selected according to the size of the RSSI value, channel information of the high-quality channels is recorded and stored in a corresponding storage list, and the channel information is stored in a preset storage area of the electronic price tag.
Further, in one embodiment, the channel information of the record includes, but is not limited to: channel number, channel RSSI value, and base station ID for the channel.
For example, in a specific application scenario, after the electronic price tag is powered on and scanned at full frequency for the first time, five optimal channels are selected, and then the channel with the best RSSI value is selected from the five channels as the communication channel to perform network residence. After the electronic price tag and the base station perform normal communication, the electronic price tag records the channel numbers, the channel RSSI values and the base station IDs of the five channels and stores the recorded channel numbers, the channel RSSI values and the base station IDs in a preset storage area corresponding to the electronic price tag, for example, the electronic price tag is appointed to be stored in the storage area corresponding to the electronic price tag.
In one embodiment, "step S30, in the embodiment shown in fig. 5, the electronic price tag redetermines the currently required communication channel according to the comparison result between the current RSSI value and the preset signal strength value", may be implemented as steps S31 to S33 described below.
And S31, selecting a channel range to be scanned when the electronic price tag determines that the corresponding communication channel needs to be reselected according to the comparison result of the current RSSI value and the preset signal strength value.
And S32, in the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel in the channel range, and the maximum value of the measured RSSI value of each communication channel is obtained.
And step S33, the electronic price tag selects a channel corresponding to the maximum value of the RSSI value as a reselected communication channel.
In the embodiment of the invention, if the electronic price tag needs to reselect a corresponding communication channel according to the comparison result of the current RSSI value and the preset signal strength value, a corresponding scanning range is selected according to the comparison result. For example, according to the comparison result, the electronic price tag directly performs full-frequency scanning or scans only a preset number of high-quality channels stored in advance. If the electronic price tag directly performs full-frequency scanning, the channel with the largest RSSI value in the measured channels is directly used as the reselected communication channel. If the electronic price tag scans only the pre-stored high-quality channels with the preset number, the channel with the largest RSSI value is obtained from the high-quality channels with the preset number and used as the reselected communication channel.
In one embodiment, "step S30, the electronic price tag re-determines the currently required communication channel according to the comparison result of the current RSSI value and the preset signal strength value" in the embodiment shown in fig. 5 may be implemented as steps S34-S37 as described below.
Step S34, the measured current RSSI value is marked as V1, the upper limit value of the preset signal strength value is marked as Vmax, the lower limit value of the preset signal strength value is marked as Vmin, and a comparison result of the current RSSI value and the preset signal strength value is obtained.
If the current RSSI value V1 satisfies: and if V1 is less than or equal to Vmin, executing step S35.
And step S35, the electronic price tag initiates full-frequency scanning, and the corresponding communication channel is reselected to join the network.
If the current RSSI value V1 satisfies: v1 > Vmax, step S36 is performed.
And step S36, the electronic price tag does not perform other channel measurement and continues to use the current communication channel.
If the current RSSI value V1 satisfies: and if Vmin is smaller than V1 and smaller than or equal to Vmax, executing step S37.
Step S37, according to the current RSSI value V1 of the currently used communication channel obtained through measurement, a first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network is determined, a scanned channel range is determined, and then a communication channel required to be used at present is determined.
For example, in a specific application scenario, the value of Vmin is-90 dbm, and the value of Vmax is-77 dbm, then when V1 is less than or equal to-90 dbm, the electronic price tag directly initiates full-frequency scanning, and the channel is reselected to be connected. When V1 > -77dbm, scanning and measurement of other channels are not performed, and data transmission is continued by using the current communication channel. When-77 dbm is less than V1 and less than or equal to-90 dbm, further comparing the current RSSI value V1 with a first measured RSSI value V0 corresponding to the currently used communication channel measured when the electronic price tag is first accessed to the network, and determining a corresponding scanning range according to the comparison result of V1 and V0, thereby determining the currently required communication channel.
Further, in one embodiment, the "step S35, the electronic price tag initiates full frequency scanning, and reselects a corresponding communication channel to join a network", may be implemented according to the following technical means:
and the electronic price tag initiates full-frequency scanning, acquires RSSI values of all channels obtained by scanning, acquires the maximum value in the RSSI values, and selects a channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
Further, in one embodiment, the step S37 of determining the scanned channel range according to the measured current RSSI value V1 of the currently used communication channel and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag first accesses the internet, and further determining the currently required communication channel may be implemented according to the following technical means:
When the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is larger than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price tag is as follows: and scanning other channels stored in the storage list in advance when the electronic price tag is started up and scanned for the first time, and determining a communication channel which is required to be used currently according to a scanning result of the other channels.
When the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is smaller than or equal to Vn, the scanning range determined by the electronic price tag is as follows: and full-frequency scanning, and reselecting a corresponding communication channel to join the network according to a scanning result.
Further, in one embodiment, the scanning the other channels of the electronic price tag stored in the storage list in advance when the electronic price tag is first turned on and scanned, and determining the communication channel currently required to be used according to the scanning result of the other channels may be implemented according to the following technical means:
and scanning other channels stored in advance when the electronic price tag is started up for scanning for the first time, and acquiring RSSI values corresponding to the other channels respectively.
If the RSSI values of other channels are smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all channels obtained by scanning, acquiring the maximum value in the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
And if the RSSI value of the other channels is larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of the other channels as a redetermined communication channel.
For example, in a specific application scenario, if the preset phase difference threshold value is 3dbm, when-77 dbm is less than V1 and less than or equal to-90 dbm and V0-V1 is more than 3dbm, the scanning range determined by the electronic price tag is as follows: and preferentially using other communication channels except the currently used communication channel in the storage list, carrying out RSSI measurement on the other communication channels in the storage list, and selecting a channel residence corresponding to the maximum value of the measured RSSI values. If the RSSI values obtained by corresponding measurement of other communication channels in the scanning storage list are smaller than the RSSI value V1 of the current communication channel, the electronic price tag initiates full-frequency scanning.
According to the electronic price tag channel selection method provided by the embodiment of the invention, the timer of the preset frequency sweeping period is started through the electronic price tag, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of the currently used communication channel; comparing the current RSSI value obtained by current measurement with a preset signal strength value; according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used; the electronic price tag can select and use the channel with good communication quality, the network communication quality of the electronic price tag is improved, the stability of the communication connection between the electronic price tag and the base station is ensured, the data update failure caused by the weak wireless signal intensity of the channel connected with the base station is prevented, and the occurrence of the network drop condition is avoided.
Fig. 6 is a schematic structural diagram of an electronic price tag channel selection device according to an embodiment of the present invention. As shown in fig. 6, in the embodiment of the present invention, the electronic price tag dynamic wake-up device includes a processor 401 and a memory 402; wherein the number of processors 401 in the electronic price tag dynamic wake-up device may be one or more, fig. 6 illustrates only one processor as an example. In the embodiment of the present invention, the processor 401 and the memory 402 may be connected by a bus or other manners, where in the embodiment of fig. 6, the processor 401 and the memory 402 are exemplified as being connected by a bus. It will be appreciated that the electronic price tag dynamic wake-up device described in this embodiment may also be applied to the embodiment shown in fig. 1 or fig. 2.
Wherein the storage 402 stores an executable program, and the processor 401 executes the executable program to implement the steps described below:
the electronic price tag starts a timer of a preset frequency sweeping period, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
And the electronic price tag redetermines a communication channel which is currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value.
Optionally, the processor 401 performs full-frequency scanning after the electronic price tag is first turned on, selects a channel with the largest RSSI value as a currently used communication channel, simultaneously selects a preset number of high-quality channels according to the size of the RSSI value, records channel information of the high-quality channels, stores the channel information in a corresponding storage list, and stores the channel information in a preset storage area of the electronic price tag.
Optionally, the channel information of the premium channel recorded by the processor 401 includes:
channel number, channel RSSI value, and base station ID for the channel.
Optionally, the processor 401 redetermines a currently required communication channel according to a comparison result of the current RSSI value and the preset signal strength value, including:
according to the comparison result of the current RSSI value and the preset signal strength value, when the electronic price tag determines that the corresponding communication channel needs to be reselected, selecting the channel range to be scanned;
in the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel in the channel range, and the maximum value of the measured RSSI value of each communication channel is obtained;
And the electronic price tag selects a channel corresponding to the maximum value of the RSSI value as a reselected communication channel.
Optionally, the processor 401 redetermines a currently required communication channel according to a comparison result of the current RSSI value and the preset signal strength value, including:
the measured current RSSI value is marked as V1, the upper limit value of the preset signal strength value is marked as Vmax, the lower limit value of the preset signal strength value is marked as Vmin, and a comparison result of the current RSSI value and the preset signal strength value is obtained;
if the current RSSI value V1 satisfies: v1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and a corresponding communication channel is reselected to join a network;
if the current RSSI value V1 satisfies: v1 is larger than Vmax, the electronic price tag does not measure other channels, and the current communication channel is continuously used;
if the current RSSI value V1 satisfies: and if Vmin is less than V1 and less than or equal to Vmax, determining a scanning channel range according to the current RSSI value V1 of the currently used communication channel obtained by measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network, and further determining the communication channel required to be used currently.
Optionally, the processor 401 initiates a full frequency scan, and reselects a corresponding communication channel to join the network, including:
and the electronic price tag initiates full-frequency scanning, acquires RSSI values of all channels obtained by scanning, acquires the maximum value in the RSSI values, and selects a channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
Optionally, the processor 401 determines a scanned channel range according to the measured current RSSI value V1 of the currently used communication channel and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag first accesses the internet, so as to determine a currently required communication channel, and includes:
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is larger than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price tag is as follows: scanning other channels stored in a storage list in advance when the electronic price tag is started up for scanning for the first time, and determining a communication channel which is required to be used currently according to a scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is smaller than or equal to Vn, the scanning range determined by the electronic price tag is as follows: and full-frequency scanning, and reselecting a corresponding communication channel to join the network according to a scanning result.
Optionally, the processor 401 scans other channels pre-stored in the storage list when the electronic price tag is first turned on and scans the electronic price tag, and determines a communication channel currently required to be used according to a scanning result of the other channels, including:
scanning other channels stored in advance when the electronic price tag is started up for scanning for the first time, and acquiring RSSI values corresponding to the other channels respectively;
if the RSSI values of other channels are smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all channels obtained by scanning, acquiring the maximum value in the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a redetermined communication channel;
and if the RSSI value of the other channels is larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of the other channels as a redetermined communication channel.
According to the electronic price tag channel selection equipment provided by the embodiment of the invention, a timer of a preset frequency sweeping period is started through the electronic price tag, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel; comparing the current RSSI value obtained by current measurement with a preset signal strength value; according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used; the electronic price tag can select and use the channel with good communication quality, the network communication quality of the electronic price tag is improved, the stability of the communication connection between the electronic price tag and the base station is ensured, the data update failure caused by the weak wireless signal intensity of the channel connected with the base station is prevented, and the occurrence of the network drop condition is avoided.
The embodiment of the invention also provides a computer storage medium, which stores an executable program, and the executable program realizes the following steps when being executed:
the electronic price tag starts a timer of a preset frequency sweeping period, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and the electronic price tag redetermines a communication channel which is currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value.
Optionally, the executable program when executed implements the steps of:
and after the electronic price tag is started for the first time, performing full-frequency scanning, selecting a channel with the largest RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the size of the RSSI value, recording channel information of the high-quality channels, storing the channel information in a corresponding storage list, and storing the channel information in a preset storage area of the electronic price tag.
Optionally, the recorded channel information of the premium channel includes:
channel number, channel RSSI value, and base station ID for the channel.
Optionally, the executable program is executed to re-determine the currently required communication channel according to the comparison result of the current RSSI value and the preset signal strength value, including:
according to the comparison result of the current RSSI value and the preset signal strength value, when the electronic price tag determines that the corresponding communication channel needs to be reselected, selecting the channel range to be scanned;
in the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel in the channel range, and the maximum value of the measured RSSI value of each communication channel is obtained;
and the electronic price tag selects a channel corresponding to the maximum value of the RSSI value as a reselected communication channel.
Optionally, the executable program is executed to re-determine the currently required communication channel according to the comparison result of the current RSSI value and the preset signal strength value, including:
the measured current RSSI value is marked as V1, the upper limit value of the preset signal strength value is marked as Vmax, the lower limit value of the preset signal strength value is marked as Vmin, and a comparison result of the current RSSI value and the preset signal strength value is obtained;
If the current RSSI value V1 satisfies: v1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and a corresponding communication channel is reselected to join a network;
if the current RSSI value V1 satisfies: v1 is larger than Vmax, the electronic price tag does not measure other channels, and the current communication channel is continuously used;
if the current RSSI value V1 satisfies: and if Vmin is less than V1 and less than or equal to Vmax, determining a scanning channel range according to the current RSSI value V1 of the currently used communication channel obtained by measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network, and further determining the communication channel required to be used currently.
Optionally, the executable program is executed to initiate full frequency scanning by the electronic price tag, and reselect a corresponding communication channel to join the network, including:
and the electronic price tag initiates full-frequency scanning, acquires RSSI values of all channels obtained by scanning, acquires the maximum value in the RSSI values, and selects a channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
Optionally, the executable program is executed to determine a scanning channel range according to the measured current RSSI value V1 of the currently used communication channel and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag first accesses the internet, so as to determine a currently required communication channel, and includes:
When the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is larger than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price tag is as follows: scanning other channels stored in a storage list in advance when the electronic price tag is started up for scanning for the first time, and determining a communication channel which is required to be used currently according to a scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is smaller than or equal to Vn, the scanning range determined by the electronic price tag is as follows: and full-frequency scanning, and reselecting a corresponding communication channel to join the network according to a scanning result.
Optionally, the executable program is executed to scan other channels stored in the storage list in advance when the electronic price tag is first turned on and scanned, and determine a communication channel currently required to be used according to a scanning result of the other channels, including:
scanning other channels stored in advance when the electronic price tag is started up for scanning for the first time, and acquiring RSSI values corresponding to the other channels respectively;
if the RSSI values of other channels are smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all channels obtained by scanning, acquiring the maximum value in the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a redetermined communication channel;
And if the RSSI value of the other channels is larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of the other channels as a redetermined communication channel.
The computer storage medium provided by the embodiment of the invention starts a timer of a preset frequency sweeping period through an electronic price tag, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel; comparing the current RSSI value obtained by current measurement with a preset signal strength value; according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used; the electronic price tag can select and use the channel with good communication quality, the network communication quality of the electronic price tag is improved, the stability of the communication connection between the electronic price tag and the base station is ensured, the data update failure caused by the weak wireless signal intensity of the channel connected with the base station is prevented, and the occurrence of the network drop condition is avoided.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (8)
1. A method of electronic price tag channel selection, the method comprising:
the electronic price tag starts a timer of a preset frequency sweeping period, and when the preset frequency sweeping period is reached, the electronic price tag measures the wireless received signal strength RSSI value of a currently used communication channel;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag redetermines a communication channel which is currently required to be used;
and the electronic price tag redetermines a communication channel currently required to be used according to the comparison result of the current RSSI value and the preset signal strength value, and comprises the following steps:
when the electronic price tag determines that the corresponding communication channel needs to be reselected, selecting a channel range to be scanned, and in the selected channel range, measuring the RSSI value of each communication channel in the channel range again by the electronic price tag, and obtaining the maximum value of the measured RSSI value of each communication channel, wherein the electronic price tag selects the channel corresponding to the maximum value of the RSSI value as the reselected communication channel;
or alternatively, the process may be performed,
The measured current RSSI value is marked as V1, the upper limit value of the preset signal strength value is marked as Vmax, the lower limit value of the preset signal strength value is marked as Vmin, and a comparison result of the current RSSI value and the preset signal strength value is obtained;
if the current RSSI value V1 satisfies: v1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and a corresponding communication channel is reselected to join a network;
if the current RSSI value V1 satisfies: v1 is larger than Vmax, the electronic price tag does not measure other channels, and the current communication channel is continuously used;
if the current RSSI value V1 satisfies: and if Vmin is less than V1 and less than or equal to Vmax, determining a scanning channel range according to the current RSSI value V1 of the currently used communication channel obtained by measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network, and further determining the communication channel required to be used currently.
2. The electronic price tag channel selection method of claim 1, further comprising:
and after the electronic price tag is started for the first time, performing full-frequency scanning, selecting a channel with the largest RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the size of the RSSI value, recording channel information of the high-quality channels, storing the channel information in a corresponding storage list, and storing the channel information in a preset storage area of the electronic price tag.
3. The electronic price tag channel selection method of claim 2, wherein the recorded channel information of the premium channel comprises:
channel number, channel RSSI value, and base station ID for the channel.
4. A method of electronic price tag channel selection according to any of claims 1-3, wherein the electronic price tag initiates a full frequency scan, reselecting a corresponding communication channel to join a network, comprising:
and the electronic price tag initiates full-frequency scanning, acquires RSSI values of all channels obtained by scanning, acquires the maximum value in the RSSI values, and selects a channel corresponding to the maximum value of the RSSI values as a redetermined communication channel.
5. A method for selecting an electronic price tag channel according to any one of claims 1-3, wherein said determining a scanned channel range and thus a currently required communication channel based on said current RSSI value V1 of said currently used communication channel obtained by measurement, a first measured RSSI value V0 corresponding to said currently used communication channel when said electronic price tag first accesses the network, comprises:
when the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is larger than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price tag is as follows: scanning other channels stored in a storage list in advance when the electronic price tag is started up for scanning for the first time, and determining a communication channel which is required to be used currently according to a scanning result of the other channels;
When the current RSSI value V1 satisfies: vmin is smaller than V1 and smaller than or equal to Vmax, and V0-V1 is smaller than or equal to Vn, the scanning range determined by the electronic price tag is as follows: and full-frequency scanning, and reselecting a corresponding communication channel to join the network according to a scanning result.
6. The electronic price tag channel selection method of claim 5, wherein the scanning other channels pre-stored in a storage list when the electronic price tag is first turned on and scanned, and determining a communication channel currently required to be used according to a scanning result of the other channels, comprises:
scanning other channels stored in advance when the electronic price tag is started up for scanning for the first time, and acquiring RSSI values corresponding to the other channels respectively;
if the RSSI values of other channels are smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all channels obtained by scanning, acquiring the maximum value in the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a redetermined communication channel;
and if the RSSI value of the other channels is larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of the other channels as a redetermined communication channel.
7. An electronic price tag channel selection device, the device comprising a processor and a memory; the memory is used for storing executable programs;
the processor is configured to execute the executable program to implement the electronic price label channel selection method of any of claims 1-6.
8. A computer storage medium having stored thereon an executable program which when executed implements the electronic price label channel selection method of any of claims 1-6.
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