CN110278577B - Data transmission control method and device - Google Patents
Data transmission control method and device Download PDFInfo
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- CN110278577B CN110278577B CN201910485799.0A CN201910485799A CN110278577B CN 110278577 B CN110278577 B CN 110278577B CN 201910485799 A CN201910485799 A CN 201910485799A CN 110278577 B CN110278577 B CN 110278577B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Abstract
The utility model discloses a data sending control method and device, communication equipment integrate have WIFI module and be different from the wireless transmission module of WIFI module, wireless transmission module and WIFI module carry out data transmission the same or have overlapping frequency channel with the available working frequency channel, be equipped with first signal line and second signal line between WIFI module and the wireless transmission module, include: when data to be sent exist in the wireless transmission module, controlling a first pin of the wireless transmission module to output a first indication signal; after the WIFI module detects the first indication signal, when the WIFI module does not send data, a second pin of the WIFI module is controlled to output a first response signal, and the second pin is a pin connected with a second signal line on the WIFI module; and starting to transmit data to be transmitted when the wireless transmission module detects the first response signal. The problem of co-channel interference caused by the same working frequency band or overlapped frequency bands is effectively solved.
Description
Technical Field
The present disclosure relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for controlling data transmission.
Background
In an intelligent home, a Zigbee network is usually constructed through an intelligent gateway, so as to realize wireless control of intelligent home devices. The working frequency range of the Zigbee module in the intelligent gateway is 2.4GHz, the working frequency range of the WIFI module inherited by the intelligent gateway is 2.4GHz, and the working frequency ranges of the Zigbee module and the WIFI module are the same, so that co-frequency interference is easily caused, the network communication quality is greatly influenced, and the failure or too large time delay of controlling the household equipment by the intelligent gateway is easily caused.
Therefore, a method for reducing co-channel interference between wireless transmission modules with the same operating frequency band is needed.
Disclosure of Invention
In order to solve the problems in the related art, the present disclosure provides a data transmission control method and apparatus.
In a first aspect, a data transmission control method is applied to a communication device, the communication device is integrated with a WIFI module and a wireless transmission module different from the WIFI module, the wireless transmission module and the WIFI module have the same available working frequency band for data transmission or have overlapping frequency bands, a first signal line and a second signal line are arranged between the WIFI module and the wireless transmission module, and the method includes:
when data to be sent exist in the wireless transmission module, controlling a first pin of the wireless transmission module to output a first indication signal, wherein the first pin is a pin connected with the signal wire on the wireless transmission module;
after the WIFI module detects the first indication signal, when the WIFI module does not send data, a second pin of the WIFI module is controlled to output a first response signal, wherein the second pin is a pin connected with the second signal line on the WIFI module;
and when the wireless transmission module detects the first response signal, starting to transmit the data to be transmitted.
In a second aspect, a data transmission control device is applied to a communication device, the communication device is integrated with a WIFI module and a wireless transmission module different from the WIFI module, the wireless transmission module and the WIFI module have the same available working frequency band for data transmission or have overlapping frequency bands, a first signal line and a second signal line are arranged between the WIFI module and the wireless transmission module, and the data transmission control device includes:
the control module is used for controlling a first pin of the wireless transmission module to output a first indication signal when the wireless transmission module has data to be sent, wherein the first pin is a pin connected with the signal wire on the wireless transmission module;
the response module is used for controlling a second pin of the WIFI module to output a first response signal when the WIFI module does not transmit data after the WIFI module detects the first indication signal, wherein the second pin is a pin connected with the second signal line on the WIFI module;
and the sending starting module is used for starting to send the data to be sent when the wireless transmission module detects the first response signal.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the technical scheme, for the communication equipment integrated with the WIFI module with the same available working frequency band or the overlapped frequency band and the wireless transmission module different from the WIFI module, when data to be transmitted exist in the wireless transmission module, the first indication signal is transmitted to the WIFI module, and after the first response signal which indicates that the WIFI module does not perform data transmission is returned after the WIFI module responds to the detected first indication signal, the data to be transmitted is started to be transmitted.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic illustration of an implementation environment according to the present disclosure;
FIG. 2 is a block diagram of an electronic device shown in accordance with an exemplary embodiment;
fig. 3 is a flowchart illustrating a data transmission control method according to an exemplary embodiment;
FIG. 4 is a flow diagram of step S110 of the corresponding embodiment of FIG. 3 in one embodiment;
FIG. 5 is a flow diagram of step S130 of the corresponding embodiment of FIG. 4 in one embodiment;
FIG. 6 is a flow chart of step S130 of the corresponding embodiment of FIG. 4 in another embodiment;
FIG. 7 is a flow diagram in one embodiment of steps after step S150 of the corresponding embodiment of FIG. 4;
FIG. 8 is a flowchart of steps in another embodiment after step S150 of the corresponding embodiment of FIG. 4;
FIG. 9 is a flow diagram illustrating control of the transmission of data in accordance with one particular embodiment;
FIG. 10 is a flow diagram illustrating control of the transmission of data in accordance with another particular embodiment;
fig. 11 is a schematic channel division diagram of a WIFI channel and a Zigbee channel in a 2.4GHz band;
fig. 12 is a block diagram illustrating a data transmission control apparatus according to an exemplary embodiment;
FIG. 13 is a flow diagram of the control module 110 of the corresponding embodiment of FIG. 12 in one embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
FIG. 1 is a schematic illustration of an implementation environment according to the present disclosure. The implementation environment includes: a communication device 1000, at least one first communication terminal 3000, and at least one second communication terminal 4000, wherein the communication device 1000 is integrated with a WIFI module 100 and a wireless communication module 300 different from the WIFI module 100, and the wireless communication module 300 may be, for example, a Zigbee module, a bluetooth module, or another communication module capable of performing wireless data transmission, and is not limited specifically herein.
The communication device 1000 is compatible with two communication modes, namely a WIFI communication mode in which communication is performed based on the WIFI module, and another wireless communication mode based on the wireless communication module 300. The communication device 1000 performs data transmission with a first communication terminal 3000 according to a WIFI communication mode through the WIFI module 100, where the first communication terminal 3000 is, for example, a router; the communication device 1000 performs data transmission with the second communication terminal 4000 through the wireless communication module 300 according to another wireless communication mode different from the wifi communication mode, and the second communication terminal 4000 may be an electronic device compatible with the wireless communication mode corresponding to the wireless communication module 300, for example, an electronic device integrated with the wireless communication module 300, such as an intelligent air conditioner, an intelligent switch, an intelligent socket, an intelligent mobile phone, and a tablet computer.
The communication device 1000 may be a gateway device or an electronic device integrated with a gateway function compatible with the above two communication modes, and is not limited in particular herein, or may be other devices capable of data transmission.
The available operating frequency bands of the WIFI module 100 and the wireless communication module 300 for data transmission are the same or have overlapping frequency bands, for example, the available operating frequency band of the WIFI module based on the IEEE 802.15.1 standard is a 2.4GHz frequency band, the globally popular available operating frequency band of the Zigbee module based on the IEEE802.15.4 standard is 2.4GHz, and the available operating frequency band of the bluetooth module based on the IEEE 802.15.1 standard is a 2.4GHz frequency band. Since the available operating frequency bands of the WIFI module and the wireless communication module are the same or there are repeat frequency bands, when both the WIFI module 100 and the wireless communication module 300 need to transmit data, interference between data transmitted by the WIFI module 100 and data transmitted by the wireless communication module 300 may be caused. Based on this, in order to solve the problem of data transmission interference faced by the WIFI module 100 and the wireless communication module 300, the technical solution of the present disclosure is proposed.
FIG. 2 is a block diagram illustrating an electronic device 200 according to an example embodiment. For example, the electronic device 200 may be the communication device 1000 in the implementation environment shown in fig. 1, and is used for implementing the transmission control method of the data of the present disclosure.
Referring to fig. 2, electronic device 200 may include one or more of the following components: the wireless communication module comprises a processing component 202, a memory 204, a power component 206, an audio component 210, a sensor component 214, a WIFI module 216, and a wireless communication module 208 that is distinct from the WIFI module, wherein at least two signal lines 201 (only two are shown in fig. 2) are provided between communication interfaces of the WIFI module 216 and the wireless communication module 208.
The processing component 202 generally controls overall operation of the electronic device 200, such as operations associated with display, data communication, recording operations, and the like. The processing components 202 may include one or more processors 218 to execute instructions. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the electronic device 200. Examples of such data include instructions for any application or method operating on the electronic device 200. The Memory 204 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. Also stored in memory 204 are one or more modules configured to be executed by the one or more processors 218.
The power supply component 206 provides power to the various components of the electronic device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 200.
The audio component 210 is configured to output and/or input audio signals. For example, the audio component 210 includes a speaker for outputting audio signals.
The sensor component 214 includes one or more sensors for providing various aspects of status assessment for the electronic device 200. For example, the sensor component 214 may detect an open/closed status of the electronic device 200, the relative positioning of the components, and the sensor component 214 may also detect a change in temperature of the electronic device 200 or a component of the electronic device 200. In some embodiments, the sensor assembly 214 may also include a magnetic sensor, a pressure sensor, a voltage sensor, a current sensor, a temperature sensor, and the like.
The WIFI module 216 is configured to establish a WIFI communication mode between the electronic device 200 and other devices, so that the electronic device 200 can access a WIreless-Fidelity (WIFI) based WIreless network, and further, the electronic device 200 can perform data transmission with an external device through the accessed WIFI network, for example, sending WIFI data, receiving WIFI data, and the like.
The wireless communication module 208 is configured to establish a wireless communication mode corresponding to the wireless communication module 208 between the electronic device 200 and another device, for example, when the wireless communication module 208 is a Zigbee module, a Zigbee communication mode between the electronic device 200 and another device is established; and, for example, when the wireless communication module 208 is a bluetooth module, a bluetooth communication mode between the electronic device 200 and another device is established.
At least two signal lines are arranged between the wireless communication module 208 and the WIFI module 216, so that one of the signal lines is used for the wireless communication module 220 to send information to the WIFI module 216, for example, when data to be sent exists in the wireless communication module, a first indication signal is sent to the WIFI module to inform the WIFI module; another signal line is used for the WIFI module 216 to send information to the wireless communication module 220. Based on the at least two signal lines provided between the wireless communication module 208 and the WIFI module 216, the electronic device 200 may be configured to implement the data transmission control method of the present disclosure.
In an exemplary embodiment, the electronic device 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital signal processors, digital signal processing devices, programmable logic devices, field programmable gate arrays, controllers, microcontrollers, microprocessors or other electronic components for performing the methods described below.
Fig. 3 is a flowchart illustrating a data transmission control method according to an exemplary embodiment. This data transmission control method is used in the communication apparatus 1000 of the implementation environment shown in fig. 1. As shown in fig. 3, the data transmission control method may be executed by a communication device 1000, the communication device integrates a WIFI module and a wireless transmission module different from the WIFI module, available working frequency bands for data transmission of the wireless transmission module and the WIFI module are the same or have overlapping frequency bands, a first signal line and a second signal line are disposed between the WIFI module and the wireless transmission module, and the method includes:
step S110, when there is data to be transmitted in the wireless transmission module, controlling a first pin of the wireless transmission module to output a first indication signal, where the first pin is a pin connected to a signal line on the wireless transmission module.
The communication device is integrated with a WIFI module and a wireless transmission module which is different from the WIFI module, namely, the communication device is compatible with at least two communication modes, namely, the WIFI communication mode based on the WIFI module and another wireless communication mode which is different from the WIFI communication mode based on the wireless transmission module. Therefore, in the communication device, the WIFI module is configured to send and receive WIFI data, where the WIFI data is data encapsulated based on a WIFI communication protocol corresponding to the WIFI module; the wireless transmission module is used for sending and receiving communication data corresponding to the communication protocol of the wireless transmission module, and the communication data is data obtained by encapsulation according to the communication protocol supported by the wireless transmission module.
All be equipped with a plurality of pins on WIFI module and the wireless transmission module to, based on the pin of laying, realize laying first signal line and second signal line before WIFI module and wireless transmission module. For example, a pin a1 and a pin a2 are provided on the WIFI module, a pin B1 and a pin B2 are provided on the wireless transmission module, one end of the first signal line is connected to the pin a1, and the other end of the first signal line is connected to the pin B1; one end of the second signal line is connected to the pin a2, and the other end is connected to the pin B2. And the first signal line and the second signal line which are distributed on the WIFI module and the wireless transmission module are used for realizing information transmission between the WIFI module and the wireless transmission module on a physical layer. In view of the fact that one signal line can only realize one-way transmission of information, in order to realize interaction between the WIFI module and the wireless transmission module, a first signal line and a second signal line are arranged, wherein the first signal line is used for the wireless transmission module to send messages to the WIFI module; the second signal line is used for the WIFI module to send messages to the wireless transmission module, in other words, the messages transmitted on the first signal line are sent by the wireless transmission module, and the messages transmitted on the second signal line are sent by the WIFI module.
In a specific embodiment, the first signal line may include only one signal line, or may be composed of multiple signal lines, and the corresponding first pin may include only one pin, or may include multiple pins; similarly, the second signal line and the third signal line may also include only one signal line, or may be composed of a plurality of signal lines, and the second pin and the third pin may also include only one pin, or may include a plurality of pins, which is not specifically limited herein. In a specific embodiment, the number of the pins in the first pin is the same as the number of the signal lines in the first signal line, that is, one signal line is connected to one pin.
After the WIFI module or the wireless transmission module is powered on, for each pin on the WIFI module or the wireless transmission module, an I/O port where the pin is located may be set to a high level or a low level, in other words, each pin may be controlled to output a high level signal and a low level signal. Thus, the first pin may output at least two different signals. Therefore, the first indication signal is appointed according to the signal which can be output by the first pin of the wireless transmission module, and the first indication signal is appointed with the WIFI module. The convention is that the WIFI module is agreed with the meaning represented by the first indication signal.
In the technical scheme of this disclosure, first instruction signal is used for wireless transmission module to instruct the WIFI module: the wireless transmission module has data to be transmitted.
The WIFI module may be a WIFI chip, for example, a WIFI chip with a model number RTL8187L, RT3070, IPQ4019, and the like, which is not specifically limited herein.
The working frequency band of the WIFI module is 2.4GHz, the transmission data volume of the WIFI communication mode is large, and other working frequency bands are the same as 2.4GHz or in a wireless communication mode with overlapping frequency bands, such as Zigbee or bluetooth, the data volume of data transmission is small, so in order to ensure the effectiveness of data transmission in the wireless communication mode with small data transmission volume, in the technical scheme disclosed in the present disclosure, the wireless transmission module different from the WIFI module is used for preferentially transmitting data as a whole.
Step S130, after the WIFI module detects the first indication signal, when the WIFI module does not send data, a second pin of the WIFI module is controlled to output a first response signal, and the second pin is a pin connected with a second signal line on the WIFI module.
Step S150, when the wireless transmission module detects the first response signal, starts to transmit data to be transmitted.
Due to the fact that the WIFI module and the wireless transmission module are appointed in advance, the WIFI module detects the first indicating signal, and therefore the fact that data to be sent exist on the wireless transmission module is known.
Like the first indication signal, the first response signal is also preset according to a signal that can be output by the second pin, and is agreed with the wireless transmission module. The first response signal is used for indicating that the WIFI module does not transmit data to the wireless transmission module.
The first response signal is used for indicating that the WIFI module does not perform data transmission, so that after the WIFI module detects the first indication signal, when the WIFI module does not perform data transmission, the second pin is controlled to output the first response signal.
For the WIFI module, when the WIFI module detects the first indication signal, there may be two situations for the WIFI module: in the first case, data transmission is not performed by itself; in the second case, the mobile station itself is performing data transmission. In the first case, the second pin may be immediately controlled to output the first response signal, and in the second case, the second pin needs to be controlled to output the first response signal after the data transmission performed by the second pin is completed or the data transmission is interrupted.
According to the technical scheme, for the communication equipment integrated with the WIFI module with the same available working frequency band or the overlapped frequency band and the wireless transmission module different from the WIFI module, when data to be transmitted exist in the wireless transmission module, the first indication signal is transmitted to the WIFI module, and after the first response signal which indicates that the WIFI module does not perform data transmission is returned after the WIFI module responds to the detected first indication signal, the data to be transmitted is started to be transmitted.
In an embodiment, a third signal line is further disposed between the WIFI module and the wireless transmission module, as shown in fig. 4, step S110 includes:
step S111, the wireless transmission module analyzes the data to be transmitted to determine whether the data to be transmitted allows delayed transmission.
For the wireless transmission module, the data to be transmitted on the wireless transmission module is determined by the upper layer application of the wireless transmission module. In an embodiment, data that is allowed to be transmitted with delay and data that is not allowed to be transmitted with delay are represented by different marks, so that the wireless transmission module can determine whether the number to be transmitted allows delay transmission by analyzing the corresponding marks in the data to be transmitted. In another embodiment, the data type corresponding to the data which is not allowed to be transmitted with delay and/or the data type corresponding to the data which is not allowed to be transmitted with delay are preset on the wireless transmission module, so that the wireless transmission module analyzes the data to be transmitted, obtains the data type of the data to be transmitted, and further determines whether the data to be transmitted is allowed to be transmitted with delay. For example, it is predetermined that the alarm data of the acousto-optic alarm is not allowed to be transmitted in a delayed manner, and the common response data is allowed to be transmitted in a delayed manner, so that whether the data to be transmitted is allowed to be transmitted in a delayed manner is determined by analyzing whether the data to be transmitted belongs to the alarm data or the common response data. In step S112, if the data to be transmitted allows delayed transmission, only the first pin is controlled to output the first indication signal.
Step S113, if the data to be transmitted does not allow delayed transmission, controlling the first pin to output the first indication signal and controlling the third pin to output the first priority indication signal, where the third pin is a pin connected to the third signal line on the wireless transmission module.
The first priority indication signal is used for indicating that data to be sent on the wireless transmission module is not allowed to be sent in a delayed mode to the WIFI module.
And correspondingly outputting signals of different combinations according to the types of the data to be sent, namely, allowing delayed sending and not allowing delayed sending, so that the type of the data to be sent is correspondingly known when the WIFI signal receives the signals, and then the data to be sent is correspondingly processed.
In an embodiment, the wireless transmission module determines that the data to be sent is allowed to be sent with a delay, and when the WIFI module detects the first indication signal, the WIFI module itself performs data sending, as shown in fig. 5, step S130 includes:
step S131A, after the WIFI module detects the first indication signal, and after data transmission is completed or interrupted, the WIFI module controls the second pin to output the first response signal.
As described above, when the WIFI module detects the first indication signal, the WIFI module itself may or may not perform data transmission.
Then, for the situation that the WIFI module does not send data, the WIFI module can immediately control the second pin to output the first response signal.
And for the situation that the WIFI module is transmitting data, the second pin needs to be controlled to output the first response signal when the WIFI module is not transmitting data. For this situation, the WIFI module is required to control the second pin to output the first response signal after the data transmission performed by the WIFI module is completed or interrupted.
The data transmission interruption performed by the WIFI module may be interrupted immediately after the first indication signal is detected, or interrupted after a period of time, which is not specifically limited herein.
In an embodiment, the WIFI module autonomously controls the interruption of data transmission performed by itself or does not interrupt. For example, it is predetermined in advance for the WIFI module which data types of data can be immediately interrupted from being transmitted, and which data types cannot be immediately interrupted from being transmitted, so as to correspondingly determine the data types corresponding to the data transmission to determine whether to immediately interrupt the data transmission; for example, it is determined whether or not the data transmission can be immediately interrupted according to the schedule of the data transmission, for example, it is predetermined at which schedule the data transmission can be interrupted, for example, the data transmission can be interrupted when the transmitted amount of the data does not exceed 50% of the total amount of the single transmission, or the data transmission can be interrupted when the transmitted amount of the data occupies 70% of the total amount of the single transmission, so as to determine whether or not the data transmission can be immediately interrupted by determining the schedule of the data transmission currently performed, and the data transmission performed is interrupted when the scheduled schedule is reached. The foregoing is, of course, merely exemplary and is not to be construed as limiting the scope of the disclosure.
In an embodiment, for data transmission interrupted by the WIFI module, after the data transmission interrupted by the WIFI module, a data transmission interruption event is correspondingly generated, where the generated data transmission interruption event includes information such as a data identifier of the data transmission, a time point at which the data transmission is interrupted, and so on, so that after the subsequent wireless transmission module completes transmission of data to be transmitted, the generated data transmission interruption time is correspondingly obtained, and transmission of the interrupted data is restarted.
In another embodiment, the wireless transmission module determines that data to be transmitted is not allowed to be transmitted in a delayed manner, and when the WIFI module detects the first indication signal, the WIFI module itself performs data transmission, as shown in fig. 6, step S130 includes:
step S131B, when the WIFI module detects the first indication signal and the first priority indication signal, immediately interrupt data transmission performed by itself, and control the second pin to output the first response signal.
As described above, the first priority indication signal indicates that the data to be transmitted in the wireless transmission module is not allowed to be transmitted in a delayed manner, so that, in order to ensure effective transmission of the data to be transmitted in the wireless transmission module, when the WIFI module detects the first indication signal and the first priority indication signal, the data transmission performed by the WIFI module is immediately interrupted, and the second pin is controlled to output the first response signal, so that the wireless transmission module starts to transmit the data to be transmitted when the first response signal is detected.
In another embodiment, if the WIFI module detects the first indication signal, the WIFI module does not transmit data, and in this case, if the WIFI module detects the first priority signal at the same time, the WIFI module immediately controls the second pin to output the first reply data, so as to meet a requirement that the data to be transmitted is not allowed to be transmitted in a delayed manner.
In an embodiment, as shown in fig. 7, after step S150, the method further includes:
step S171, after the wireless transmission module completes transmission of data to be transmitted, controlling to switch the first indication signal output by the first pin to the second indication signal.
Step S172, after the WIFI module detects the second indication signal, controlling to switch the first response signal output by the second pin to the second response signal.
The second indication signal is used for indicating the WIFI module that data transmission of the wireless transmission module is completed, so that the WIFI module can conveniently perform subsequent data transmission, for example, the WIFI module restarts to transmit data which is suspended to be transmitted. The second response signal is used for distinguishing the first response signal, so that the WIFI module is prevented from always keeping the state of outputting the first response signal. In other words, the wireless transmission module starts to transmit its own data to be transmitted only when detecting the first response signal transmitted by the WIFI module in response to the transmitted first indication signal, and does not start to transmit its own data to be transmitted otherwise, for example, when the signal output by the second pin is the second response signal.
In another embodiment, as shown in fig. 8, after step S150, the method includes:
step S181, after the wireless transmission module finishes transmitting the data to be transmitted, controlling to switch the first indication signal output by the first pin to the second indication signal and to switch the first priority indication signal output by the third pin to the second priority indication signal.
Step S182, when the WIFI module detects the second indication signal and the second priority indication signal, controlling to switch the first response signal output by the second pin to the second response signal.
In other words, for the WIFI module, only when the WIFI module detects the first priority indication signal output by the third pin and the first indication signal output by the first pin, the data transmission performed by the WIFI module is immediately interrupted and the second pin is controlled to output the first response data, and in other cases, for example, when the signal output by the third pin is the second priority signal, the data transmission performed by the WIFI module is not immediately interrupted.
By switching the first indication signal output by the first pin into the second indication signal and switching the first priority indication signal output by the third pin into the second priority indication signal, the influence of error indication on normal data transmission of the WIFI module is avoided, and therefore preparation is made for data transmission of the wireless transmission module next time.
In an embodiment, the wireless transmission module is a Zigbee module. As described above, when the working frequency band of the Zigbee module is 2.4GHz, which is popular worldwide, the working frequency band of the WIFI module is also 2.4GHz, and the working frequency bands of the WIFI module and the Zigbee module are the same, so that by the above method, the problem of data transmission interference between the Zigbee module and the WIFI module on the communication device can be avoided.
In another embodiment, the wireless transmission module may also be a bluetooth module. In an embodiment, the communication device is a gateway device, that is, the communication device is a gateway device integrating a WIFI module and a wireless transmission module, for example, a gateway device integrating a WIFI module and a Zigbee module.
The technical solution of the present disclosure is described below with reference to a specific embodiment. The communication equipment is an intelligent gateway integrating a WIFI module and a Zigbee module, wherein three signal lines are arranged between the WIFI module and the Zigbee module, a signal line 1 (serving as a first signal line), a signal line 2 (serving as a second signal line) and a signal line 3 (serving as a third signal line), wherein the signal line 1 is connected with a first pin of the Zigbee module and is used for the Zigbee module to send messages to the WIFI module; the signal line 2 is connected with a second pin of the WIFI module and is used for the WIFI module to send a message to the Zigbee module; the signal line 3 is connected to a third pin of the Zigbee module, and is used to send a message to the WIFI module when the data to be sent of the Zigbee module is not allowed to be sent with a delay.
When the Zigbee module performs data communication, the communication data amount is small, so the communication of the Zigbee module is prioritized as a whole. Since each end of the signal line 1, the signal line 2, and the signal line 3 is connected to only one pin, signals output from the first pin, the second pin, and the third pin are either high level signals or low level signals. In the industry, a pin connected to a signal line outputs a high level signal, which is also called pulling up the signal line connected to the pin (i.e. setting the I/O port where the pin is located to a high level), whereas a pin outputs a low level signal, which is also called pulling down the signal line connected to the pin (i.e. setting the I/O port where the pin is located to a low level).
Presetting, wherein a first indicating signal is a high level signal output by a first pin, and a second indicating signal is a low level signal output by the first pin; the first response signal is a high level signal output by the second pin, and the second response signal is a low level signal output by the second pin; the first priority indication signal is a high level signal output by the third pin, and the second priority indication signal is a low level signal output by the third pin.
When the Zigbee module has data to be transmitted, and the data to be transmitted is allowed to be transmitted with a delay, a transmission control flow of the data is as shown in fig. 9:
1. the Zigbee module only controls to pull up the signal wire 1;
2. after the WIFI module detects that the signal line 1 is pulled up (namely, a first indication signal serving as a high-level signal is detected), if the WIFI module per se is transmitting data, and if the data transmission performed by the WIFI module per se is allowed to be interrupted immediately, the signal line 2 is controlled to be pulled up (namely, a first response signal is output) after the data transmission performed by the WIFI module per se is interrupted; on the contrary, if the data transmission performed by the WIFI module itself does not allow immediate interruption, the signal line 2 is controlled to be pulled up after the data transmission performed by the WIFI module itself is interrupted or the data transmission is completed;
3. after the Zigbee module detects that the signal wire 2 is pulled high, starting to send data to be sent;
4. after the data to be sent is sent, the signal wire 1 is controlled to be pulled down;
5. after the WIFI module detects that the signal line 1 is pulled down, the signal line 2 is controlled to be pulled down.
When the data to be transmitted of the Zigbee module is not allowed to be transmitted with a delay, the transmission control flow of the data is as shown in fig. 10:
1. the Zigbee module controls to pull up the signal line 1 and the signal line 3;
2. when the WIFI module detects that the signal line 1 and the signal line 3 are both pulled up, data transmission performed by the WIFI module is immediately interrupted, and the signal line 2 is controlled to be pulled up;
3. after the Zigbee module detects that the signal wire 2 is pulled high, starting to send data to be sent;
4. after the data to be sent is sent, the Zigbee module pulls down the signal line 1 and the signal line 3;
5. after the WIFI module detects that the signal line 1 is pulled down, the signal line 2 is controlled to be pulled down.
In the technical scheme, the message transmission between the WIFI module and the Zigbee module is realized by controlling the first signal line and the second signal line, compared with the traditional message transmission, because the processes of data identification, data analysis, data processing, data encapsulation and the like are required to be carried out for each message transmission, the time delay of the message transmission is above the ms level, the timeliness and the effectiveness of data transmission of the wireless transmission module and the WIFI module are greatly influenced, the WIFI module and the Zigbee module are directly controlled in a physical layer, the message transmission between the WIFI module and the Zigbee module is realized by pulling up and pulling down, the module response is rapid, the Zigbee data transmission delay is greatly reduced, and the anti-interference performance of the gateway is also enhanced. When the technical scheme disclosed by the present disclosure is not adopted, under the condition of the WIFI100M throughput, the packet loss rate of Zigbee data transmission is above 80%, and after the technical scheme disclosed by the present disclosure is adopted, under the same condition, the packet loss rate of Zigbee data transmission is less than 5%, so that the validity of data transmission is greatly ensured.
For the WIFI module and the Zigbee module of the gateway, data transmission is performed based on a channel established by the WIFI module and the Zigbee module to perform data transmission and reception. For convenience of description, a channel for WIFI data transmission accessed by the WIFI module is referred to as a WIFI channel, and a channel for Zigbee data transmission accessed by the Zigbee module is referred to as a Zigbee channel. The division of the WIFI channel and the Zigbee channel based on the 2.4GHz working frequency band is shown in fig. 11.
In a specific embodiment, after the WIFI module of the gateway establishes the WIFI channel, the Zigbee module is actively notified, so that when the Zigbee module establishes the Zigbee channel, the frequency band where the WIFI channel is located is actively avoided, and Zigbee channel search is performed in other frequency bands, thereby establishing the Zigbee channel.
For example, the WIFI channel established by the WIFI module of the gateway is channel No. 1, as shown in fig. 11, the frequency band of channel No. 1 in the WIFI channel is 2.402GHz to 2.424 GHz. As shown in fig. 11, the frequency bands of the number 11 channel, the number 12 channel, the number 13 channel, and the number 14 channel in the Zigbee channels are exactly within the range of 2.402GHz to 2.424GHz, so that in the process of establishing the Zigbee channels by the Zigbee modules, the number 11 channel, the number 12 channel, the number 13 channel, and the number 14 channel are actively avoided, and channel search and establishment are performed in the number 15-26 channels. In communication, the larger the frequency band interval between channels is, the greatly reduced interference suffered by data transmission, so that, in order to ensure the frequency band interval between the established WIFI channel and the Zigbee channel, for example, at least ensure the frequency band interval of 4MHz, in the above example, channel search and establishment are performed in channel nos. 16 to 26.
In an environment where the gateway is located, there may be multiple gateways, so that, in order to avoid interference of data transmission caused by that multiple gateways occupy the same Zigbee channel or an adjacent Zigbee channel to perform data transmission, the Zigbee module that controls the gateway performs channel search and dynamically establishes the Zigbee channel. As described above, after the Zigbee module establishes the WIFI channel according to the WIFI module, the Zigbee module determines the selectable frequency band of the Zigbee channel according to the frequency band of the established WIFI channel, so as to perform Zigbee channel search in the selectable frequency band.
The Zigbee channel searching is carried out, namely, which Zigbee channels are occupied in the selectable frequency band are determined, so that the Zigbee module selects one of the unoccupied Zigbee channels in the selectable frequency band to access, and the same Zigbee channel occupied by other gateways is avoided; if the Zigbee channels in the selectable frequency band are all occupied, the power of each Zigbee channel is obtained through scanning, so that the Zigbee channel which is the least occupied is selected for access.
In an embodiment, a Zigbee channel with priority access may be set for the Zigbee module, for example, channels No. 11, 15, 20, and 25 in the Zigbee channel are set as priority access channels, so that when performing signal scanning, the priority access channel in the selectable frequency band is preferentially scanned. In an embodiment, the priority access channel may be set according to an interval frequency band of the channel, for example, if the interval frequency band is set to 20MHz, 11, 15, 20, and 25 may be set as the priority access channel. If the gateway accesses the priority access channel, the frequency band interval between the Zigbee channels of the gateway and other surrounding gateways can be ensured, and the interference of data transmission is reduced.
Further, after the gateway accesses the priority access channel to establish the Zigbee network, the terminal device that needs to join the Zigbee network may also perform channel scanning according to the priority access channel (e.g., 11, 15, 20, 25 mentioned above) set for the Zigbee module, and join the gateway when scanning the corresponding Zigbee network. Compared with the prior art that each terminal device of the Zigbee network that needs to join the gateway scans the channels 11, 12, and 13.
The following are embodiments of the apparatus of the present disclosure, which may be used to execute embodiments of the method for controlling data transmission executed by the above-mentioned communication device 1000 of the present disclosure. For details that are not disclosed in the embodiments of the apparatus of the present disclosure, please refer to the embodiments of the method for controlling sending of data of the present disclosure.
Fig. 12 is a block diagram of a data transmission control apparatus according to an exemplary embodiment, where the data transmission control apparatus is applied to a communication device, the communication device is integrated with a WIFI module and a wireless transmission module different from the WIFI module, available operating frequency bands of the wireless transmission module and the WIFI module for data transmission are the same or overlapping frequency bands exist, a first signal line and a second signal line are provided between the WIFI module and the wireless transmission module, and the data transmission control apparatus includes:
the control module 110 is configured to control a first pin of the wireless transmission module to output a first indication signal when the wireless transmission module has data to be sent, where the first pin is a pin on the wireless transmission module and connected to a signal line.
The response module 130 is configured to control a second pin of the WIFI module to output a first response signal when the WIFI module does not send data after the WIFI module detects the first indication signal, where the second pin is a pin on the WIFI module and connected to the second signal line.
The transmission starting module 150 is configured to start to transmit data to be transmitted when the wireless transmission module detects the first response signal.
The implementation process of the functions and actions of each module in the above device is detailed in the implementation process of the corresponding steps in the above method, and is not described herein again.
In an embodiment, a third signal line is further disposed between the WIFI module and the wireless transmission module, and the control module 110 includes:
an analyzing unit 111, configured to analyze, by the wireless transmission module, data to be sent to determine whether to allow delayed sending of the data to be sent;
a first control unit 112, configured to control only the first pin to output the first indication signal if the parsing unit determines that the data to be sent is allowed to be sent in a delayed manner;
the second control unit 113 is configured to control the first pin to output the first indication signal and control the third pin to output the first priority indication signal if the parsing unit determines that the data to be sent is not allowed to be sent in a delayed manner, where the third pin is a pin connected to the third signal line on the wireless transmission module.
In an embodiment, the wireless transmission module determines that data to be transmitted is allowed to be transmitted in a delayed manner, and when the WIFI module detects the first indication signal, the WIFI module itself is transmitting data, and the responding module 130 includes:
and the first response unit is used for controlling the second pin to output the first response signal after the WIFI module detects the first indication signal and data transmission of the WIFI module is completed or interrupted.
In another embodiment, the wireless transmission module determines that data to be transmitted is not allowed to be transmitted in a delayed manner, and when the WIFI module detects the first indication signal, the WIFI module itself is transmitting data, and the responding module 130 includes:
and the second response unit is used for immediately interrupting the data transmission performed by the WIFI module when the WIFI module detects the first indication signal and the first priority indication signal, and controlling the second pin to output the first response signal.
In one embodiment, the apparatus for controlling data transmission further includes:
the first switching module is used for controlling to switch the first indication signal output by the first pin into a second indication signal after the wireless transmission module finishes the transmission of the data to be transmitted;
and the second switching module is used for controlling the first response signal output by the second pin to be switched into a second response signal after the WIFI module detects the second indication signal.
In another embodiment, the apparatus for controlling transmission of data further includes:
the third switching module is used for controlling the first indication signal output by the first pin to be switched into the second indication signal and the first priority indication signal output by the third pin to be switched into the second priority indication signal after the wireless transmission module finishes transmitting the data to be transmitted;
and the fourth switching module is used for controlling to switch the first response signal output by the second pin into the second response signal when the WIFI module detects the second indication signal and the second priority indication signal.
In an embodiment, the wireless transmission module is a Zigbee module.
In an embodiment, the communication device is a gateway device.
The implementation process of the functions and actions of each module in the device is specifically described in the implementation process of the corresponding step in the data transmission control method, and is not described herein again.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (6)
1. A data transmission control method is applied to communication equipment, and is characterized in that the communication equipment is integrated with a WIFI module and a wireless transmission module different from the WIFI module, the available working frequency bands of the wireless transmission module and the WIFI module for data transmission are the same or have overlapped frequency bands, a first signal line, a second signal line and a third signal line are arranged between the WIFI module and the wireless transmission module, and the method comprises the following steps:
when the wireless transmission module has data to be sent, the wireless transmission module analyzes the data to be sent to determine whether the data to be sent is allowed to be sent in a delayed manner; if the data to be sent is allowed to be sent in a delayed mode, only the first pin is controlled to output a first indicating signal; if the data to be transmitted does not allow delayed transmission, controlling the first pin to output a first indication signal and controlling a third pin to output a first priority indication signal, wherein the third pin is a pin connected with a third signal line on the wireless transmission module, and the first pin is a pin connected with the signal line on the wireless transmission module;
after the WIFI module detects the first indication signal, when the WIFI module transmits data, judging whether the data transmission performed by the WIFI module can be interrupted or not based on the data transmission progress, if so, immediately interrupting the data transmission performed by the WIFI module, and controlling a second pin to output a first response signal; if not, after the data transmission is finished, controlling the second pin to output the first response signal, wherein the second pin is a pin connected with the second signal line on the WIFI module;
when the WIFI module detects the first indication signal and the first priority indication signal, immediately interrupting data transmission performed by the WIFI module, and controlling the second pin to output the first response signal;
and when the wireless transmission module detects the first response signal, starting to transmit the data to be transmitted.
2. The method of claim 1, wherein the wireless transmission module determines that the data to be transmitted is allowed to be transmitted with a delay, and wherein the wireless transmission module, after initiating transmission of the data to be transmitted when detecting the first acknowledgement signal, further comprises:
after the wireless transmission module finishes the transmission of the data to be transmitted, controlling to switch a first indication signal output by the first pin into a second indication signal;
and after the WIFI module detects the second indication signal, controlling to switch the first response signal output by the second pin into a second response signal.
3. The method of claim 1, wherein the wireless transmission module determines that the data to be transmitted is not allowed to be transmitted with a delay, and further comprising, after the wireless transmission module starts transmitting the data to be transmitted when the first acknowledgement signal is detected:
after the wireless transmission module finishes transmitting the data to be transmitted, controlling to switch the first indication signal output by the first pin into a second indication signal and switch the first priority indication signal output by the third pin into a second priority indication signal;
and when the WIFI module detects the second indication signal and the second priority indication signal, controlling to switch the first response signal output by the second pin into a second response signal.
4. The method of claim 1, wherein the wireless transmission module is a Zigbee module.
5. The method of claim 1, wherein the communication device is a gateway device.
6. The utility model provides a sending controlling means of data, is applied to communication equipment, its characterized in that, communication equipment is integrated with the WIFI module and is distinguished from the wireless transmission module of WIFI module, wireless transmission module with the usable working frequency channel that the WIFI module carries out data transmission is the same or there is overlapping frequency channel, the WIFI module with be equipped with first signal line, second signal line and third signal line between the wireless transmission module, the device includes:
the control module is used for analyzing the data to be sent by the wireless transmission module when the data to be sent exists in the wireless transmission module so as to determine whether the data to be sent is allowed to be sent in a delayed manner; if the data to be sent is allowed to be sent in a delayed mode, only the first pin is controlled to output a first indicating signal; if the data to be transmitted does not allow delayed transmission, controlling the first pin to output a first indication signal and controlling a third pin to output a first priority indication signal, wherein the third pin is a pin connected with a third signal line on the wireless transmission module, and the first pin is a pin connected with the signal line on the wireless transmission module;
the response module is used for judging whether data transmission performed by the WIFI module can be interrupted or not based on the data transmission progress when the WIFI module performs data transmission after the WIFI module detects the first indication signal, if so, immediately interrupting the data transmission performed by the WIFI module, and controlling a second pin to output a first response signal; if not, after the data transmission of the WIFI module is finished, controlling the second pin to output the first response signal, and immediately interrupting the data transmission of the WIFI module and controlling the second pin to output the first response signal when the WIFI module detects the first indication signal and the first priority indication signal, wherein the second pin is a pin connected with the second signal line on the WIFI module;
and the sending starting module is used for starting to send the data to be sent when the wireless transmission module detects the first response signal.
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| CN111083702A (en) * | 2019-11-20 | 2020-04-28 | 青岛海信智慧家居系统股份有限公司 | ZigBee equipment management method and device for smart home |
| CN111988896B (en) * | 2020-08-05 | 2021-06-04 | 北京东华博泰科技有限公司 | Internet of things equipment management method based on edge computing gateway and big data cloud platform |
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