WO2020118700A1

WO2020118700A1 - Method for scanning channel, communication terminal, and storage medium

Info

Publication number: WO2020118700A1
Application number: PCT/CN2018/121262
Authority: WO
Inventors: 梁朝忠; 李亮华
Original assignee: 海能达通信股份有限公司
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2020-06-18

Abstract

Disclosed is a method for scanning a channel. The method comprises: obtaining a channel scanning parameter, wherein the channel scanning parameter is used for defining a target channel to be scanned; scanning the target channel defined by the channel scanning parameter in at least one time slot to obtain channel state information, wherein in the process for scanning the target channel, a hardware circuit for channel scanning is controlled to be started up before scanning an initial target channel, and the hardware circuit for the channel scanning is controlled to be closed down after the scanning of the last target channel is completed. According to the method, in the process for channel scanning, the hardware circuit for channel scanning is controlled to be started up and closed down only once, a large amount of time for starting up and closing down the hardware circuit is saved for scanning more channels, so that the efficiency for channel scanning is improved. The present application further provides a communication terminal and a storage medium.

Description

Channel scanning method, communication terminal and storage medium

Technical field

The present application relates to the field of communications, and in particular, to a channel scanning method, a communication terminal, and a storage medium.

Background technique

In the private network communication technology, the device needs to be able to identify the signals present in the current air interface within a certain frequency range, so as to identify valid signals, and then provide a basis for the development of other services. The above process is defined as channel scanning. In the current TDMA system, since the hardware circuit needs to be turned on and off in each time slot, this will cause more time to be spent on controlling the hardware circuit to start and turn off, so that only one frequency point can be performed in each time slot Locking and data collection and analysis result in low utilization of time slots. Due to the low time slot utilization rate, it will cause the channel scanning to take too long when the number of channels to be scanned is large. Therefore, a method that can solve the above technical problems is needed.

Summary of the invention

The main technical problem solved by this application is how to improve the efficiency of channel scanning.

To solve the above technical problems, a technical solution adopted by the present application is to provide a channel scanning method, and the method includes:

Acquiring a channel description parameter, where the channel description parameter is used to define a target channel to be scanned;

Scan the target channel defined by the channel description parameter in at least one time slot to obtain channel state information;

Wherein, during the scanning of the target channel, the hardware circuit for channel scanning is controlled to start before scanning the initial target channel, and the hardware circuit is controlled to be closed after the scanning of the last target channel is completed.

In order to solve the above technical problems, another technical solution adopted by the present application is to provide a communication terminal including: a processor, a memory, a receiving circuit, and a voltage-controlled oscillator circuit;

Wherein, the receiving circuit is connected to the voltage controlled oscillator circuit, and is used to receive the signal from the base station, preprocess the received signal and send it to the voltage controlled oscillator circuit;

The control end of the voltage-controlled oscillator circuit is connected to the processor, and is used to lock the channel of the frequency corresponding to the control instruction when receiving the control instruction of the processor;

The memory is used to store program data; the memory is used to store program data;

The processor is used to run the program data to perform the method as described above.

To solve the above technical problem, another technical solution adopted by the present application is to provide a storage medium storing program data, and the program data is executed to implement the method described above when the program data is executed.

In the above solution, the target channel defined by the channel description parameter is scanned in at least one time slot by acquiring the channel description parameter used to define the target channel to be scanned to obtain channel state information. In the process of channel scanning defined by the channel description parameters, the hardware circuit for channel scanning is controlled to start only before the initial target channel is scanned, and the hardware for channel scanning is controlled after the last channel scan is completed The circuit is closed. In this process, the hardware circuit for channel scanning is only turned on and off once, so as to reduce the startup and shutdown of the hardware circuit, thereby reducing the time slot occupation of the scanning process by startup and shutdown, and improving the efficiency of channel scanning.

BRIEF DESCRIPTION

1 is a schematic flowchart of an embodiment of a channel scanning method according to this application;

2 is a schematic flowchart of another embodiment of a channel scanning method according to this application;

3 is a schematic flowchart of another embodiment of a channel scanning method according to this application;

4 is a schematic structural diagram of an embodiment of a communication terminal of the present application;

5 is a schematic structural diagram of an embodiment of a storage medium of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. It can be understood that the specific embodiments described here are only used for explaining the present application, rather than limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference herein to "embodiments" means that specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments.

The first thing to note is that the process of channel scanning in the prior art is as follows: At or before the start of each receive time slot, the hardware circuit for channel scanning needs to be turned on and configured. At the end of the time slot, Turn off the hardware circuit used for channel scanning, which will occupy more time slots for switching related hardware circuits, resulting in lower efficiency of channel scanning. The solution provided by this application is used to solve this technical problem and to improve the efficiency of channel scanning.

Please refer to FIG. 1, which is a schematic flowchart of an embodiment of a channel scanning method according to this application. In the current embodiment, the method includes:

S110: Acquire channel description parameters.

Among them, the channel description parameter is used to define the target channel to be scanned. In the current embodiment, the channel description parameters include: information of the starting target channel, channel increment and total number of channels. The start target channel is the first channel to be scanned, and the information of the start target channel includes at least: the frequency corresponding to the start channel. The channel increment is the difference between the frequency of the two adjacent scanning channels. The frequency of the latter channel is equal to the sum of the frequency of the previous channel and the increment of the channel. Set the channel increment to a relatively small value. The total number of channels is the total number of channels that need to be scanned during the current scanning process. Together with the initial target channel and channel increment, the frequency range of the scanned channels is determined.

The channel description parameter acquisition method includes: set by user input. The channel scanning parameters set by the user can be modified by the user according to the actual communication environment. The range of user-modifiable channel parameters is set by the communication device at the factory. In order to scan the channel more accurately, the channel increment can also be preset in the factory, recommended by the communication terminal for the user, and determined by the user's choice.

S120: Scan the target channel defined by the channel description parameter in at least one time slot to obtain channel state information.

Scanning the target channel defined by the channel description parameter is the process of frequency locking and data collection on the target channel. Therefore, it is necessary to control the hardware circuit used for channel scanning, receive data calculation and analysis, software flow control, save scanning results, etc., which will be described in detail below. In the current embodiment, the channel state information includes: the strength of the channel signal. Of course, in other embodiments, the channel state information may further include: information data carried by it.

Among them, during the scanning of the target channel, the hardware circuit for channel scanning is controlled to start before scanning the initial target channel, and the hardware circuit for channel scanning is controlled to be closed after the scanning of the last target channel is completed. The hardware circuit used for channel scanning includes: a receiving circuit and a voltage-controlled oscillation circuit.

In the current embodiment, in step S120: scanning the target channel defined by the channel description parameter in at least one time slot to obtain channel state information, the method further includes: sending a first start instruction to the receiving circuit to start the receiving circuit, And send a second start command to the voltage controlled oscillation circuit to start the voltage controlled oscillation circuit. And in the technical solution provided by the present application, in the process of scanning the channel such as the total number of channels, in the normal process, the first start instruction and the second start instruction are sent only once before the initial channel scan, which are used to start Receiving circuit and voltage control oscillation circuit. After the scan of the initial channel or the scan of the non-last channel is completed, the receiving circuit and the voltage-controlled oscillation circuit will not be closed. After completing the scanning of all target channels defined by the channel scanning parameters, a first shutdown command is sent to the receiving circuit to shut down the receiving circuit, and a second closing command is sent to the voltage controlled oscillator circuit to shut down the voltage controlled oscillator circuit. Similar to starting the receiving circuit and the voltage-controlled oscillation circuit, in the technical solution provided by the present application, in the process of scanning the channel defined by the channel description parameter, the receiving circuit and the voltage-controlled oscillation circuit will be closed only once, specifically until The first close command and the second close command will be sent only after scanning all channels, which are used to close the receiving circuit and the voltage-controlled oscillation circuit, respectively.

In the embodiment shown in FIG. 1, by performing scanning on the target channel defined by the channel description parameter, the receiving circuit and the voltage-controlled oscillation circuit for channel scanning will be turned on only once before the starting target channel is scanned, and After scanning the initial target channel, the receiving circuit and the voltage-controlled oscillation circuit are not turned off. Only after the channel scanning of the total number of channels is completed, the hardware circuit for channel scanning is turned off. In this way, the time for turning on and off the hardware circuit can be reduced, the time for hardware scanning in the time slot for scanning can be reduced, and more time in the time slot can be used for scanning the channel defined by the channel description parameter, which greatly improves The scanning efficiency of the channel.

Please refer to FIG. 2, which is a schematic flowchart of another embodiment of a channel scanning method according to this application. In the current embodiment, the target channel defined by the channel description parameter is scanned in the embodiment shown in FIG. 1 to obtain channel state information for further elaboration. In the current embodiment, the steps include:

S221: The starting target channel is first used as the target channel.

First, the target channel defined in the target description parameter is used as the target channel, where the target channel refers to the channel to be scanned. Since the starting target channel is defined in the channel description parameter, after the start of the hardware circuit for channel scanning, the starting target channel will be used as the target channel first, which is also the first channel to be scanned. Understandably, when the user-defined channel description parameter does not define a starting target channel, the default starting channel is automatically selected based on the attributes of the communication frequency range corresponding to the communication device, and the defined starting channel is used as The target channel will not be detailed here.

S222: Obtain the frequency of the target channel, and configure a voltage-controlled oscillation circuit to lock the frequency of the target channel.

After the target signal is determined, the frequency of the target channel needs to be further locked. Specifically, the frequency of the target channel is locked by the voltage-controlled oscillation circuit. Therefore, after acquiring the target channel frequency, a voltage-controlled oscillation circuit will be further configured to lock the target channel frequency.

In the current embodiment, when the first target channel is scanned, since the first target channel is the starting target channel, the locking of the first target channel is only after acquiring the frequency corresponding to the starting target channel To configure the voltage-controlled oscillation circuit to lock the frequency corresponding to the initial target channel.

After the first channel is scanned, the following channels need to be scanned to determine the target channel that needs to be scanned. The process of determining the non-first target channel is as follows: add the last channel to be scanned and the channel increment defined in the channel description parameter to obtain the target channel that needs to be scanned currently. After determining the target channel to be scanned, the corresponding frequency can be obtained based on the determined target channel, and then the voltage-controlled oscillation circuit can be configured to output a voltage corresponding to the frequency to lock the frequency of the target channel. Among them, frequency locking refers to making the voltage-controlled oscillation circuit output a voltage-controlled voltage so that the signal can oscillate steadily at a certain frequency. S223: Scan the target channel to obtain the channel state information of the target channel.

After configuring the voltage-controlled oscillation circuit to lock the frequency of the target channel, start data collection to obtain the channel status information of the target channel. As described above, in the current embodiment, the channel state information includes: the current signal strength of the channel. Therefore, when collecting data, the signal strength at the locked frequency will be obtained, and the obtained signal strength and channel information will be stored correspondingly.

After completing the scan of the target channel, that is, completing the data collection to obtain the channel state information of the target channel, the channel state information of the target channel will be further saved. Specifically, in the current embodiment, after the scanning of one channel is completed, the obtained channel state information will be temporarily stored until all the channel state information obtained is reported together after completing the scanning of all channels save.

S224: If it is judged that the total number of channels currently scanned is less than the total number of channels, the sum of the current target channel and the channel increment is used as the new target channel, and the frequency locking step of the target channel and the scanning step of the target channel are performed until the current The total number of channels that have completed scanning is not less than the total number of channels.

Since there are multiple channels to be scanned, after scanning one channel, it will be judged whether the total number of channels currently scanned is less than the total number of channels, used to judge whether all the channels defined in the channel description parameters are completed Scan.

If it is judged that the total number of channels currently scanned is less than the total number of channels, it is judged that the scanning of all channels defined by the channel description parameter is not currently completed. Then, the sum of the current target channel and the channel increment needs to be used as the new target channel, and then the determined new target channel is frequency locked and scanned for the target channel. Then it is judged again whether the scanning of the channels defined by the channel description parameters has been completed. After scanning all the channels, the channel status information obtained by scanning all the channels will be reported and saved together for processing and analysis by the processor. Channel scanning will further cycle: determine the new target channel, lock the target channel frequency, scan the target channel and determine whether to complete the scan of all channels.

Please refer to FIG. 3, which is a schematic flowchart of another channel scanning method according to this application in another embodiment. In the current embodiment, the method includes:

S310: Acquire channel description parameters. Step S310 is the same as step S110 in FIG. 1 described above. For details, please refer to the explanation of step S110 above, and details are not repeated here.

S320: Calculate the frequency of at least one target channel according to the information of the initial target channel, the channel increment, and the total number of channels. Among them, the target channel includes a start target channel, and other target channels based on the start target channel and increasing in channel increments. Among them, the number of other target channels is the value corresponding to the total number of channels in the channel description parameter minus one (the minus one represents the number of starting target channels).

In the embodiment shown in FIG. 3, in step S320, all target channels corresponding to the channels defined in the channel description parameters are pre-determined, and the frequency corresponding to each target channel is calculated to be used as a basis for scanning the target channel. Calculate the frequency to configure the voltage-controlled oscillation circuit in sequence.

It should be noted that, in the current embodiment, step S320 is a step that will be performed before scanning the initial target channel to obtain channel state information.

S330: Configure a voltage-controlled oscillation circuit to lock the frequency of a target channel.

Starting from the frequency corresponding to the initial target channel, the voltage-controlled oscillator circuit is configured in sequence according to the calculated frequency of each target channel to be scanned to lock the frequency of a target channel. After locking the frequency of a target channel, that is Step S340 is performed, that is, the target channel is scanned to obtain the channel state information of the target channel.

S340: Scan the target channel to obtain channel state information of the target channel. Step S340 is the same as step S223 in the embodiment corresponding to FIG. 2 above. For details, please refer to the explanation of step S223 above, and will not be repeated here.

In the current embodiment, since the frequency of the target channel to be scanned is calculated and obtained in step S320, when performing channel scanning, it is only necessary to sequentially configure the voltage-controlled oscillation circuit from the frequency corresponding to the starting target channel. Then, after the frequency is locked, the channel is scanned to obtain the channel status information of the target channel, and then it is judged that the scan of all channels is not completed, and the voltage-controlled oscillation circuit is directly configured based on the calculated frequency of the next target channel to lock the frequency And then scan.

Of course, in other embodiments, after the scanning of one channel is completed, it is only necessary to determine whether the scanning of all channels is completed according to the frequency of the target channel calculated in step S320. Configure the voltage-controlled oscillation circuit according to the calculated frequency of the next target channel, and then perform frequency locking and channel scanning.

In the current embodiment, after scanning one channel is completed, it will be judged whether the scanning of all channels defined by the channel description parameter is completed. When the judgment is not completed, the above steps S330 and S340 will be repeated until the judgment is completed. Scanning of all channels stops afterwards. Further, in the current embodiment, when it is judged that the calculated target channels have been scanned, the channel state information of all the target channels obtained by scanning is reported to the protocol stack for the preset service to call. When the channel scan is not completed, the channel state parameters obtained by the scan are temporarily stored, and all the channel scans are reported and saved together after completion.

In the technical solution provided by the present application, compared with the prior art solution, a large amount of time for turning on the receiving circuit and the voltage-controlled oscillation circuit is saved, so that the time for channel scanning in each time slot is relatively large. Therefore, in the technical solution provided by the present application, there are multiple target channels scanned in each time slot. In each time slot, after the scan of the previous target channel is completed, only the frequency corresponding to the next target channel of the voltage-controlled oscillation circuit needs to be configured, and the frequency corresponding to the target channel can be locked in a short time, thus, That is, multiple channels can be scanned in one time slot.

In other embodiments, the number of channels pre-scanned in each time slot may be preset. Taking the tetra system as an example, according to the agreement, the dwell time of each frequency point of the tetra system is 2ms, and the maximum time of the locked frequency is 1ms. Based on the scheme provided in this application, only the channel will be activated during the channel scanning process. The hardware circuit is scanned once, and the hardware circuit is only turned off once, so according to the calculation of tetra each time slot time is 14.167ms, each channel can be scanned 4 times, greatly improving the scanning efficiency of the channel. In the current embodiment, a time slot may be preset to perform channel scanning 4 times to improve channel scanning efficiency. Based on the above example, four channel scans are performed in the tetra system, then the remaining time in one time slot will be used to check the information of the scanned channel scanned in the current time slot, and/or the channel to be scanned in the next time slot information.

It is concluded that when the time required to complete the scanning of a predetermined number of channels in the time slot is less than the time length of the time slot, the remaining time of the time slot will be used to calibrate the information of the scanning channel in the current time slot, and/or Pre-calibrate the channel information to be scanned in the next time slot, where the information of the checked channel at least includes: the frequency corresponding to the scanned channel.

In the technical solution provided by the present application, in the process of scanning the target channel, since the receiving circuit and the voltage control oscillation circuit are not closed after scanning the initial target channel, the second channel, the third and the last are scanned Before a channel, there is no need to repeatedly control the switch of the receiving circuit and the voltage control oscillation circuit, so that the frequency corresponding to the next target channel of the voltage control oscillation circuit can be directly configured, and the frequency lock time can also be reduced. As a result of the test: the frequency difference between the second target channel and the first target channel is within 1Mhz, and the frequency time corresponding to locking the second target channel can be reduced to within 1ms. Even if the data collection time is kept the same as the time in the prior art, the scanning time of one channel will be less than 3 ms, which greatly reduces the time to scan one channel and improves the scanning efficiency of a large number of channels. As mentioned above, when the time of one slot allows, the voltage-controlled oscillator circuit can be configured multiple times in one slot to scan multiple channels, so that when the number of channels to be scanned reaches tens or even hundreds Compared with the existing technology, this solution can save a lot of time, improve the user experience, and also improve the competitiveness of the product.

Please refer to FIG. 4, which is a schematic structural diagram of an embodiment of a communication terminal 400 according to the present application. The communication terminal 400 includes a processor 401, a memory 402, a receiving circuit 403, and a voltage controlled oscillator circuit 404.

Among them, the receiving circuit 403 is connected to the voltage-controlled oscillator circuit 404 for receiving radio frequency signals. The mixer (not shown) and the voltage controlled oscillator circuit 404 in the receiving circuit 403 also perform down conversion and sampling pre-processing on the received radio frequency signal, and send the processing result to the processor 401.

The control end of the voltage-controlled oscillator circuit 404 is connected to the processor 401, and is used to lock the frequency of the target channel corresponding to the control instruction when the control instruction of the processor 401 is received. The voltage-controlled oscillator circuit 404 is connected to the mixing terminal of the receiving circuit 403. The voltage-controlled oscillator circuit 404 is used to down-convert the signal received by the receiving circuit, and locks the frequency corresponding to the target channel in the received signal under the control of the processor 401.

The memory 402 is used to store program data, and the processor 401 is used to run the program data to perform the methods described in the embodiments corresponding to FIG. 1 to FIG. 3 above.

Referring to FIG. 5, the present application also provides a storage medium 500. The storage medium 500 stores program data 501 that implements the method of positioning signal processing as described above and the method described in each embodiment when the program data 501 is executed. Specifically, the storage medium 500 may be one of a memory, a personal computer, a server, a network device, or a U disk.

The above are only the embodiments of the present application, and therefore do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by the description and drawings of this application, or directly or indirectly used in other related technologies In the field, the same reason is included in the scope of patent protection of this application.

Claims

A method of channel scanning, characterized in that the method includes:

Acquiring a channel description parameter, where the channel description parameter is used to define a target channel to be scanned;

Scan the target channel defined by the channel description parameter in at least one time slot to obtain channel state information;

Wherein, during the scanning of the target channel, the hardware circuit for channel scanning is controlled to start before scanning the initial target channel, and the hardware for channel scanning is controlled after the scan of the last target channel is completed The circuit is closed.
The method of channel scanning according to claim 1, wherein:

The hardware circuit for channel scanning includes: a receiving circuit and a voltage-controlled oscillation circuit;

Before scanning the target channel defined by the channel description parameter in at least one time slot to obtain channel state information, it includes:

Sending a first start command to the receiving circuit to start the receiving circuit, and sending a second start command to the voltage controlled oscillator circuit to start the voltage controlled oscillator circuit;

The method also includes:

After the scan of all target channels defined by the channel description parameters is completed, send a first close command to the receiving circuit to close the receiving circuit, and send a second close command to the voltage-controlled oscillation circuit to close The voltage controlled oscillation circuit.
The method of channel scanning according to claim 2, wherein the channel description parameters include: information of the starting target channel, channel increment and total number of channels.
The method of channel scanning according to claim 3, wherein the scanning of the target channel defined by the channel description parameter to obtain channel state information includes:

First use the starting target channel as the target channel;

Obtain the frequency of the target channel, and configure the voltage-controlled oscillation circuit to lock the frequency of the target channel;

Scanning the target channel to obtain channel state information of the target channel;

If it is determined that the total number of channels currently scanned is less than the total number of channels, the sum of the current target channel and the channel increment is used as the new target channel, and the frequency locking step of the target channel and the scanning step of the target channel are performed, The total number of channels that have been scanned until now is not less than the total number of channels.
The method of channel scanning according to claim 3, wherein

Before scanning the target channel defined by the channel description parameter in at least one time slot to obtain channel state information, it includes:

Calculate the frequency of at least one target channel according to the information of the starting target channel, channel increment, and the total number of channels, where the target channel includes the starting target channel, based on the starting target channel and using the Other target channels with increasing channel increments, wherein the number of the other target channels is a value corresponding to the total number of channels minus one;

The scanning of the target channel defined by the channel description parameter to obtain channel state information includes:

Configuring the voltage-controlled oscillation circuit to lock a frequency of the target channel;

Scanning the target channel to obtain channel state information of the target channel;

Repeat the above steps until all the calculated target channels have been scanned.
The method of channel scanning according to claim 5, wherein the method further comprises:

After scanning all the target channels, the channel state information of all the target channels obtained by scanning is reported to the protocol stack for the preset service to call.
The method of channel scanning according to claim 1, wherein the number of target channels scanned in each time slot is multiple.
The method of channel scanning according to claim 1, wherein the number of channels scanned is preset for each of the time slots;

The method also includes:

When the time required for the target channel to finish scanning the preset number of channels in the time slot is less than the time length of the time slot, the remaining time of the time slot will be used to check the information of the scanned channel in the current time slot , And/or pre-calibrate the channel information to be scanned in the next time slot, where the checked channel information at least includes: the frequency corresponding to the scanned channel.
A communication terminal, characterized in that the communication terminal includes: a processor, a memory, a receiving circuit, and a voltage-controlled oscillator circuit;

Wherein, the receiving circuit is connected to the voltage-controlled oscillator circuit, used to receive the incoming radio frequency signal, and pre-process the received signal and send it to the voltage-controlled oscillator circuit;

The control end of the voltage controlled oscillator circuit is connected to the processor, and is used to lock the frequency of the target channel corresponding to the control instruction when receiving the control instruction of the processor;

The memory is used to store program data;

The processor is used for running the program data to execute the method according to any one of claims 1-8.
A storage medium, characterized in that the storage medium stores program data, and when the program data is executed, the method according to any one of claims 1 to 8 is implemented.