CN112821970A - Electronic price tag channel selection method, electronic price tag channel selection device and computer storage medium - Google Patents
Electronic price tag channel selection method, electronic price tag channel selection device and computer storage medium Download PDFInfo
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- CN112821970A CN112821970A CN202011635719.4A CN202011635719A CN112821970A CN 112821970 A CN112821970 A CN 112821970A CN 202011635719 A CN202011635719 A CN 202011635719A CN 112821970 A CN112821970 A CN 112821970A
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- electronic price
- price tag
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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
Abstract
The invention discloses a method, equipment and a computer storage medium for selecting an electronic price tag channel.A timer of a preset frequency sweep period is started through an electronic price tag, and when the preset frequency sweep 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 re-determines the communication channel which is required to be used currently; the purpose that the electronic price tag can select and use a channel with good communication quality is achieved, the network communication quality of the electronic price tag is improved, the stability of communication connection between the electronic price tag and the base station is ensured, data updating failure caused by weak wireless signal strength of the channel connected with the base station of the electronic price tag is prevented, and the occurrence of a 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 an apparatus for selecting an electronic price tag channel, and a computer storage medium.
Background
At present, electronic price sign-on needs to search all 2.4G channels in sequence, select an available channel and register to access the network, and then perform corresponding data transmission. Since the base station is arranged at a fixed position in advance through a network cable, when the position of the electronic price tag moves and changes, the network environment of the electronic price tag changes, and at the moment, the signal quality of a channel originally selected by the electronic price tag may be deteriorated, which may seriously affect the update of the data corresponding to the electronic price tag, and even cause a network drop. Therefore, how to re-select channels by the electronic price tag is one of the problems to be solved at present.
Disclosure of Invention
The invention provides a method, equipment and computer storage medium for selecting electronic price tag channels, aiming at selecting and using channels with good communication quality by an electronic price tag.
A first aspect of an embodiment of the present invention provides an electronic price tag channel selection method, where the method includes:
the electronic price tag starts a timer of a preset frequency sweep period, and measures the wireless receiving signal strength RSSI value of a currently used communication channel when the preset frequency sweep period is reached;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag re-determines the communication channel which is required to be used currently.
Optionally, the electronic price tag channel selection method further includes:
and carrying out full-frequency scanning after the electronic price tag is started for the first time, selecting the channel with the maximum RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the RSSI value, recording the 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 corresponding to the channel.
Optionally, the re-determining, by the electronic price tag, a currently required communication channel according to the comparison result between 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 intensity value, when the electronic price tag determines that a corresponding communication channel needs to be reselected, selecting a channel range needing to be scanned;
within the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel within the channel range, and obtains the maximum value of the RSSI value of each communication channel obtained through measurement;
and the electronic price tag selects a channel corresponding to the maximum RSSI value as a reselected communication channel.
Optionally, the re-determining, by the electronic price tag, a currently required communication channel according to the comparison result between the current RSSI value and the preset signal strength value includes:
recording the measured current RSSI value as V1, recording the upper limit value of the preset signal strength value as Vmax, recording the lower limit value of the preset signal strength value as Vmin, and obtaining the comparison result of the current RSSI value and the preset signal strength value;
if the current RSSI value V1 satisfies: if V1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and reselects a corresponding communication channel to join the network;
if the current RSSI value V1 satisfies: if V1 is greater than Vmax, the electronic price tag does not measure other channels and continues to use the current communication channel;
if the current RSSI value V1 satisfies: and Vmin is more than V1 and less than or equal to Vmax, determining the scanned channel range according to the current RSSI value V1 of the currently used communication channel obtained through measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is accessed to the network for the first time, and further determining the currently required communication channel.
Optionally, the electronic price tag initiates full frequency scanning, 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 newly determined communication channel.
Optionally, the determining, according to the current RSSI value V1 obtained by measurement 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 is first networked, a scanned channel range, and then determining a currently required communication channel includes:
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vmax, and V0-V1 is more than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price label is as follows: scanning other channels pre-stored in a storage list when the electronic price tag is started for scanning for the first time, and determining a communication channel required to be used currently according to the scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vax, and V0-V1 and is less than or equal to Vn are simultaneously satisfied, the scanning range determined by the electronic price label is as follows: and scanning the full frequency, and reselecting a corresponding communication channel to join the network according to the scanning result.
Optionally, the scanning other channels pre-stored in a storage list when the electronic price tag is first turned on for scanning, and determining a communication channel currently required to be used according to a scanning result of the other channels includes:
scanning other channels pre-stored when the electronic price tag is started for scanning for the first time, and acquiring RSSI values respectively corresponding to the other channels;
if the RSSI values of other channels are all smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all scanned channels, acquiring the maximum value of the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a newly determined communication channel;
and if the RSSI values of other channels have values larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of other channels as the newly determined communication channel.
A second aspect of an embodiment of the present invention provides an electronic price tag channel selection device, where the device includes a processor and a memory; the memory is used for storing an executable program; the processor is configured to execute the executable program to implement the electronic price tag channel selection method.
A third aspect of embodiments of the present invention provides a computer storage medium having an executable program stored thereon, the executable program when executed implementing 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 of a preset frequency sweep period is started through the electronic price tag, and when the preset frequency sweep 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 re-determines the communication channel which is required to be used currently; the purpose that the electronic price tag can select and use a channel with good communication quality is achieved, the network communication quality of the electronic price tag is improved, the stability of communication connection between the electronic price tag and the base station is ensured, data updating failure caused by weak wireless signal strength of the channel connected with the base station of the electronic price tag is prevented, and the occurrence of a 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 communication network system architecture diagram 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 an environmental change of an electronic price tag network according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method of an implementation manner of a method for selecting an electronic price tag channel 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 merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.
The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The following describes each component of the mobile terminal in detail with reference to fig. 1:
the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, 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 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).
WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing 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 call 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 related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a 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 graphic 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 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone 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 audio signals.
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 that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.
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 (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 generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, 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 a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a 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 direction 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 sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. 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, a mouse, a joystick, and the like, and are not limited to these specific examples.
Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.
The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (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 external devices 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 external devices.
The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the 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 operating 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, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly 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 supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via 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 in detail 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 is described below.
Referring to fig. 2, fig. 2 is an architecture 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 universal mobile telecommunications 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) 203, and an IP service 204 of an operator, which are in communication connection in sequence.
Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.
The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.
The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.
Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also 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 communication network system, the present invention provides various embodiments of the method.
As shown in fig. 3, fig. 3 is a schematic diagram of an electronic price tag network architecture according to an embodiment of the present invention. In the application scenario illustrated in fig. 3, the base station is disposed at a fixed position through the network cable, and therefore, when the electronic price tag moves, the signal strength of the currently connected base station of the electronic price tag also changes. As shown in fig. 4, fig. 4 is a schematic diagram of an environmental change of an electronic price tag network according to an embodiment of the present invention. When the electronic price tag moves, the corresponding network environment changes, and the communication quality of the wireless network communication between the electronic price tag and the base station may also change.
In view of the above situation, as shown in fig. 5, fig. 5 is a schematic method flow diagram of an implementation manner of an electronic price tag channel selection method according to an embodiment of the present invention. In the embodiment of fig. 5, the electronic price tag channel selection method may be implemented as steps S10-S30 described below.
And step S10, starting a timer of a preset frequency sweep period by the electronic price tag, and measuring the wireless receiving signal strength RSSI value of the currently used communication channel by the electronic price tag when the preset frequency sweep period is reached.
And step S20, comparing the current RSSI value obtained by current measurement with a preset signal strength value.
And step S30, according to the comparison result between the current RSSI value and the preset signal strength value, the electronic price tag re-determines the communication channel which is required to be used currently.
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 sweeping period, for example, the preset frequency sweeping period is five minutes; when the preset frequency sweeping period is reached, the electronic price tag measures the Received Signal Strength (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 present invention, the preset signal strength value may be configured according to a specific application scenario of the electronic price tag and/or a communication requirement between the electronic price tag and the base station. And according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag determines whether to continue using the current communication channel or reselect a new communication channel.
In one embodiment, for an electronic price tag which is started up for the first time and accessed to the network, full frequency scanning is performed after the electronic price tag is started up for the first time, a channel with the maximum RSSI value is selected as a currently used communication channel, a preset number of high-quality channels are simultaneously selected according to 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 recorded channel information includes, but is not limited to: channel number, channel RSSI value, and base station ID corresponding to the channel.
For example, in a specific application scenario, after the electronic price tag is powered on for the first full-frequency scanning, five optimal channels are selected, and then the best channel, i.e., the channel with the maximum RSSI value, is selected from the five channels to be used as a communication channel for network camping. After the electronic price tag and the base station normally communicate, the electronic price tag records and stores the channel number, the channel RSSI value and the base station ID of the five channels 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, the step S30 of the embodiment shown in fig. 5, wherein the electronic price tag re-determines the communication channel currently required to be used according to the comparison result between the current RSSI value and the preset signal strength value, may be implemented as steps S31-S33 as described below.
Step S31, according to the comparison result between 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 a channel range to be scanned.
Step S32, in the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel in the channel range, and obtains the maximum value of the measured RSSI value of each communication channel.
And step S33, selecting the channel corresponding to the maximum value of the RSSI value by the electronic price tag as the reselected communication channel.
In the embodiment of the invention, according to the comparison result of the current RSSI value and the preset signal intensity value, if the electronic price tag is determined to need to reselect the corresponding communication channel, the 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 only scans a pre-stored preset number of good channels. And if the electronic price tag directly performs full-frequency scanning, directly taking the channel with the maximum RSSI value in all the measured channels as a reselected communication channel. If the electronic price tag only scans the pre-stored high-quality channels with the preset number, the channel with the maximum RSSI value is obtained from the high-quality channels with the preset number and is used as the reselected communication channel.
In one embodiment, the step S30 of the embodiment shown in fig. 5, wherein the electronic price tag re-determines the communication channel currently required to be used according to the comparison result between the current RSSI value and the preset signal strength value, may be implemented as steps S34-S37 as described below.
And step S34, recording the measured current RSSI value as V1, recording the upper limit value of the preset signal strength value as Vmax, and recording the lower limit value of the preset signal strength value as Vmin, and acquiring a comparison result of the current RSSI value and the preset signal strength value.
If the current RSSI value V1 satisfies: v1 is less than or equal to Vmin, then step S35 is executed.
And step S35, the electronic price tag initiates full frequency scanning, and reselects a corresponding communication channel to join the network.
If the current RSSI value V1 satisfies: v1 > Vmax, then step S36 is executed.
And step S36, the electronic price tag does not carry out other channel measurement and continues to use the current communication channel.
If the current RSSI value V1 satisfies: vmin < V1 is less than or equal to Vmax, then step S37 is executed.
And S37, obtaining the current RSSI value V1 of the currently used communication channel according to measurement, determining a scanned channel range according to a first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is accessed to the network for the first time, and further determining the currently needed communication channel.
For example, in a specific application scenario, the value of Vmin is-90 dbm, and the value of Vmax is-77 dbm, when V1 is less than or equal to-90 dbm, the electronic price tag directly initiates full-frequency scanning, and a channel is reselected for network access. When V1 > -77dbm, no other channel scans and measurements are made and the current communication channel continues to be used for data transmission. And 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 accessed to the network for the first time, and determining a corresponding scanning range according to the comparison result of V1 and V0 so as to further determine the currently required communication channel.
Further, in an embodiment, the step S35 of initiating a full frequency scan by the electronic price tag and reselecting a corresponding communication channel to join the 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 newly determined communication channel.
Further, in an embodiment, the step S37, determining the scanned channel range and further determining the currently required communication channel 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 internet, may be implemented according to the following technical means:
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vmax, and V0-V1 is more than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price label is as follows: and scanning other channels which are pre-stored in a storage list when the electronic price tag is started for scanning for the first time, and determining a communication channel required to be used currently according to the scanning result of the other channels.
When the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vax, and V0-V1 and is less than or equal to Vn are simultaneously satisfied, the scanning range determined by the electronic price label is as follows: and scanning the full frequency, and reselecting a corresponding communication channel to join the network according to the scanning result.
Further, in an embodiment, the scanning other channels pre-stored in the storage list when the electronic price tag is first turned on for scanning, 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 pre-stored when the electronic price tag is started for scanning for the first time, and acquiring RSSI values respectively corresponding to the other channels.
If the RSSI values of other channels are all smaller than the current RSSI value V1, full-frequency scanning is initiated, the RSSI values of all scanned channels are obtained, the maximum value of the RSSI values is obtained, and the channel corresponding to the maximum value of the RSSI values is selected as the newly determined communication channel.
And if the RSSI values of other channels have values larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of other channels as the newly determined communication channel.
For example, in a specific application scenario, if the preset phase difference threshold value is 3dbm, then when-77 dbm is less than V1 and less than or equal to-90 dbm, and V0-V1 is greater than 3dbm, then the scanning range determined by the electronic price tag is: 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 corresponding to the maximum value of the measured RSSI values to reside. And if the RSSI values measured correspondingly to other communication channels in the scanning storage list are all 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, a timer of a preset frequency sweep period is started through an electronic price tag, and when the preset frequency sweep 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 re-determines the communication channel which is required to be used currently; the purpose that the electronic price tag can select and use a channel with good communication quality is achieved, the network communication quality of the electronic price tag is improved, the stability of communication connection between the electronic price tag and the base station is ensured, data updating failure caused by weak wireless signal strength of the channel connected with the base station of the electronic price tag is prevented, and the occurrence of a 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; the number of the processors 401 in the electronic price tag dynamic wake-up device may be one or more, and fig. 6 only describes 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 in another manner, where in the embodiment shown in fig. 6, the processor 401 and the memory 402 are connected by a bus as an example. It is understood that the electronic price tag dynamic wake-up device described in this embodiment may also be applied to the embodiments shown in fig. 1 or fig. 2.
Wherein the storage 402 stores therein an executable program, and the processor 401 executes the executable program to implement the steps described as follows:
the electronic price tag starts a timer of a preset frequency sweep period, and measures the wireless receiving signal strength RSSI value of a currently used communication channel when the preset frequency sweep period is reached;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag re-determines the communication channel which is required to be used currently.
Optionally, the processor 401 performs full frequency scanning after the electronic price tag is turned on for the first time, selects a channel with the maximum RSSI value as a currently used communication channel, selects a preset number of high-quality channels according to 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 good channel recorded by the processor 401 includes:
channel number, channel RSSI value, and base station ID corresponding to the channel.
Optionally, the processor 401, according to a comparison result between the current RSSI value and the preset signal strength value, re-determining, by the electronic price tag, a communication channel that needs to be currently used, including:
according to the comparison result of the current RSSI value and the preset signal intensity value, when the electronic price tag determines that a corresponding communication channel needs to be reselected, selecting a channel range needing to be scanned;
within the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel within the channel range, and obtains the maximum value of the RSSI value of each communication channel obtained through measurement;
and the electronic price tag selects a channel corresponding to the maximum RSSI value as a reselected communication channel.
Optionally, the processor 401, according to a comparison result between the current RSSI value and the preset signal strength value, re-determining, by the electronic price tag, a communication channel that needs to be currently used, including:
recording the measured current RSSI value as V1, recording the upper limit value of the preset signal strength value as Vmax, recording the lower limit value of the preset signal strength value as Vmin, and obtaining the comparison result of the current RSSI value and the preset signal strength value;
if the current RSSI value V1 satisfies: if V1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and reselects a corresponding communication channel to join the network;
if the current RSSI value V1 satisfies: if V1 is greater than Vmax, the electronic price tag does not measure other channels and continues to use the current communication channel;
if the current RSSI value V1 satisfies: and Vmin is more than V1 and less than or equal to Vmax, determining the scanned channel range according to the current RSSI value V1 of the currently used communication channel obtained through measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is accessed to the network for the first time, and further determining the currently required communication channel.
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 newly determined communication channel.
Optionally, the determining, by the processor 401, the current RSSI value V1 of the currently used communication channel obtained according to the measurement, and a first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first accessed to the network, the scanned channel range, and then the currently required used communication channel, includes:
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vmax, and V0-V1 is more than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price label is as follows: scanning other channels pre-stored in a storage list when the electronic price tag is started for scanning for the first time, and determining a communication channel required to be used currently according to the scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vax, and V0-V1 and is less than or equal to Vn are simultaneously satisfied, the scanning range determined by the electronic price label is as follows: and scanning the full frequency, and reselecting a corresponding communication channel to join the network according to the scanning result.
Optionally, the processor 401 scans other channels pre-stored in a storage list when the electronic price tag is first turned on and scanned, and determines a communication channel required to be currently used according to a scanning result of the other channels, including:
scanning other channels pre-stored when the electronic price tag is started for scanning for the first time, and acquiring RSSI values respectively corresponding to the other channels;
if the RSSI values of other channels are all smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all scanned channels, acquiring the maximum value of the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a newly determined communication channel;
and if the RSSI values of other channels have values larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of other channels as the newly determined communication channel.
According to the electronic price tag channel selection device provided by the embodiment of the invention, a timer of a preset frequency sweep period is started through an electronic price tag, and when the preset frequency sweep 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 re-determines the communication channel which is required to be used currently; the purpose that the electronic price tag can select and use a channel with good communication quality is achieved, the network communication quality of the electronic price tag is improved, the stability of communication connection between the electronic price tag and the base station is ensured, data updating failure caused by weak wireless signal strength of the channel connected with the base station of the electronic price tag is prevented, and the occurrence of a network drop condition is avoided.
An embodiment of the present invention further provides a computer storage medium, where an executable program is stored in the computer storage medium, and when the executable program is executed, the following steps are implemented:
the electronic price tag starts a timer of a preset frequency sweep period, and measures the wireless receiving signal strength RSSI value of a currently used communication channel when the preset frequency sweep period is reached;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag re-determines the communication channel which is required to be used currently.
Optionally, the executable program when executed implements the steps of:
and carrying out full-frequency scanning after the electronic price tag is started for the first time, selecting the channel with the maximum RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the RSSI value, recording the 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 corresponding to the channel.
Optionally, the executable program is executed to re-determine, according to the comparison result between the current RSSI value and the preset signal strength value, a communication channel currently required to be used by the electronic price tag, and includes:
according to the comparison result of the current RSSI value and the preset signal intensity value, when the electronic price tag determines that a corresponding communication channel needs to be reselected, selecting a channel range needing to be scanned;
within the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel within the channel range, and obtains the maximum value of the RSSI value of each communication channel obtained through measurement;
and the electronic price tag selects a channel corresponding to the maximum RSSI value as a reselected communication channel.
Optionally, the executable program is executed to re-determine, according to the comparison result between the current RSSI value and the preset signal strength value, a communication channel currently required to be used by the electronic price tag, and includes:
recording the measured current RSSI value as V1, recording the upper limit value of the preset signal strength value as Vmax, recording the lower limit value of the preset signal strength value as Vmin, and obtaining the comparison result of the current RSSI value and the preset signal strength value;
if the current RSSI value V1 satisfies: if V1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and reselects a corresponding communication channel to join the network;
if the current RSSI value V1 satisfies: if V1 is greater than Vmax, the electronic price tag does not measure other channels and continues to use the current communication channel;
if the current RSSI value V1 satisfies: and Vmin is more than V1 and less than or equal to Vmax, determining the scanned channel range according to the current RSSI value V1 of the currently used communication channel obtained through measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is accessed to the network for the first time, and further determining the currently required communication channel.
Optionally, the executable program is executed to initiate a full frequency scan by the electronic price tag, and reselect the 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 newly determined communication channel.
Optionally, the executable program is executed to determine a scanned channel range according to the current RSSI value V1 of the currently used communication channel obtained through 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 determine a currently required used communication channel, including:
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vmax, and V0-V1 is more than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price label is as follows: scanning other channels pre-stored in a storage list when the electronic price tag is started for scanning for the first time, and determining a communication channel required to be used currently according to the scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vax, and V0-V1 and is less than or equal to Vn are simultaneously satisfied, the scanning range determined by the electronic price label is as follows: and scanning the full frequency, and reselecting a corresponding communication channel to join the network according to the scanning result.
Optionally, the executable program is executed to scan other channels pre-stored in a storage list when the electronic price tag is first booted for scanning, and determine a communication channel required to be currently used according to a scanning result of the other channels, where the scanning includes:
scanning other channels pre-stored when the electronic price tag is started for scanning for the first time, and acquiring RSSI values respectively corresponding to the other channels;
if the RSSI values of other channels are all smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all scanned channels, acquiring the maximum value of the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a newly determined communication channel;
and if the RSSI values of other channels have values larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of other channels as the newly determined communication channel.
The computer storage medium provided by the embodiment of the invention starts a timer of a preset frequency sweep period through an electronic price tag, and when the preset frequency sweep 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 re-determines the communication channel which is required to be used currently; the purpose that the electronic price tag can select and use a channel with good communication quality is achieved, the network communication quality of the electronic price tag is improved, the stability of communication connection between the electronic price tag and the base station is ensured, data updating failure caused by weak wireless signal strength of the channel connected with the base station of the electronic price tag is prevented, and the occurrence of a 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method of electronic price tag channel selection, the method comprising:
the electronic price tag starts a timer of a preset frequency sweep period, and measures the wireless receiving signal strength RSSI value of a currently used communication channel when the preset frequency sweep period is reached;
comparing the current RSSI value obtained by current measurement with a preset signal strength value;
and according to the comparison result of the current RSSI value and the preset signal strength value, the electronic price tag re-determines the communication channel which is required to be used currently.
2. The electronic price tag channel selection method of claim 1, wherein the method further comprises:
and carrying out full-frequency scanning after the electronic price tag is started for the first time, selecting the channel with the maximum RSSI value as a currently used communication channel, simultaneously selecting a preset number of high-quality channels according to the RSSI value, recording the 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 includes:
channel number, channel RSSI value, and base station ID corresponding to the channel.
4. The method of any of claims 1-3, wherein said re-determining a currently required communication channel by the electronic price tag based on the comparison of the current RSSI value with the preset signal strength value comprises:
according to the comparison result of the current RSSI value and the preset signal intensity value, when the electronic price tag determines that a corresponding communication channel needs to be reselected, selecting a channel range needing to be scanned;
within the selected channel range, the electronic price tag re-measures the RSSI value of each communication channel within the channel range, and obtains the maximum value of the RSSI value of each communication channel obtained through measurement;
and the electronic price tag selects a channel corresponding to the maximum RSSI value as a reselected communication channel.
5. The method of any of claims 1-3, wherein said re-determining a currently required communication channel by the electronic price tag based on the comparison of the current RSSI value with the preset signal strength value comprises:
recording the measured current RSSI value as V1, recording the upper limit value of the preset signal strength value as Vmax, recording the lower limit value of the preset signal strength value as Vmin, and obtaining the comparison result of the current RSSI value and the preset signal strength value;
if the current RSSI value V1 satisfies: if V1 is less than or equal to Vmin, the electronic price tag initiates full-frequency scanning, and reselects a corresponding communication channel to join the network;
if the current RSSI value V1 satisfies: if V1 is greater than Vmax, the electronic price tag does not measure other channels and continues to use the current communication channel;
if the current RSSI value V1 satisfies: and Vmin is more than V1 and less than or equal to Vmax, determining the scanned channel range according to the current RSSI value V1 of the currently used communication channel obtained through measurement and the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is accessed to the network for the first time, and further determining the currently required communication channel.
6. The method of claim 5, wherein the electronic price tag initiating a full frequency scan to reselect 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 newly determined communication channel.
7. The method of claim 5, wherein the determining the current RSSI value V1 of the currently used communication channel according to the measurement, the first measured RSSI value V0 corresponding to the currently used communication channel when the electronic price tag is first connected to the network, the range of the scanned channels, and thus the currently required communication channel, comprises:
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vmax, and V0-V1 is more than Vn, wherein Vn is a preset phase difference threshold value, and the scanning range determined by the electronic price label is as follows: scanning other channels pre-stored in a storage list when the electronic price tag is started for scanning for the first time, and determining a communication channel required to be used currently according to the scanning result of the other channels;
when the current RSSI value V1 satisfies: vmin is more than V1 and is less than or equal to Vax, and V0-V1 and is less than or equal to Vn are simultaneously satisfied, the scanning range determined by the electronic price label is as follows: and scanning the full frequency, and reselecting a corresponding communication channel to join the network according to the scanning result.
8. The method for selecting an electronic price tag channel according to claim 7, wherein said scanning other channels pre-stored in a storage list at the time of first power-on scanning of the electronic price tag and determining a currently required communication channel according to a scanning result of the other channels comprises:
scanning other channels pre-stored when the electronic price tag is started for scanning for the first time, and acquiring RSSI values respectively corresponding to the other channels;
if the RSSI values of other channels are all smaller than the current RSSI value V1, initiating full-frequency scanning, acquiring the RSSI values of all scanned channels, acquiring the maximum value of the RSSI values, and selecting the channel corresponding to the maximum value of the RSSI values as a newly determined communication channel;
and if the RSSI values of other channels have values larger than the current RSSI value V1, selecting the channel corresponding to the maximum value from the RSSI values of other channels as the newly determined communication channel.
9. An electronic price tag channel selection device, comprising a processor and a memory; the memory is used for storing an executable program;
the processor is configured to execute the executable program to implement the electronic price tag channel selection method of any one of claims 1-8.
10. A computer storage medium having stored thereon an executable program that when executed performs the electronic price tag channel selection method of any of claims 1-8.
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