WO2023197599A1

WO2023197599A1 - Lte frame offset value calculation method, apparatus and system, and device and storage medium

Info

Publication number: WO2023197599A1
Application number: PCT/CN2022/132041
Authority: WO
Inventors: 梁德刚
Original assignee: 广州万码科技有限公司
Priority date: 2022-04-13
Filing date: 2022-11-15
Publication date: 2023-10-19
Also published as: CN114885412B; CN114885412A

Abstract

Disclosed in the present invention are an LTE frame offset value calculation method, apparatus and system, and a device and a storage medium. The method comprises: performing time synchronization on a sampling tool; sampling target base station data at a specified sampling rate by using the sampling tool that has successfully experienced time synchronization, wherein the target base station data comprises a sampling data buffer area and a sampling count; searching for a protocol signal on the basis of the sampling data buffer area and according to an LTE protocol, comparing the protocol signal with a synchronization signal, and outputting a determination result; if the determination result is that the protocol signal is synchronous with the synchronization signal, recording the current sampling count, and calculating a frame offset value of a target base station; and if the determination result is that the protocol signal is not synchronous with the synchronization signal, returning to the step of sampling target base station data at a specified sampling rate by using the sampling tool that has successfully experienced time synchronization, and executing subsequent steps. In the present invention, there is no need to use a dedicated decoding chip to execute complicated search and decoding operations, and a frame offset value of a target base station can be calculated only according to a sampling count and a specified sampling rate, such that the operation efficiency can be improved, and the decoding cost can be saved on.

Description

LTE frame offset value calculation method, device, system, equipment and storage medium

Technical field

The invention relates to an LTE frame offset value calculation method, device, system, equipment and storage medium, and belongs to the field of wireless communication.

Background technique

With the development of wireless communication technology, the fourth generation mobile communication system (4G) has penetrated into every aspect of people's lives. As an enhanced version of 3G, LTE (Long term Evolutions) has fully met the standards of the 4G network (100Mbps downlink) and has become the de facto 4G standard implementation; among them, the LTE system under TDD (time division mode) has time synchronization requirements very high. Frame time offset is an important indicator of base station operation. Improper setting will cause various wireless interference and even communication interruptions. In addition, during the wireless interference troubleshooting process, obtaining frame offset information related to the interference source and comparing it with the actual base station will also help quickly Locate the source of interference. Currently, traditional methods use complex cell search decoding methods to calculate frame timestamps (the timestamp is the current time of the wireless data packet, and the frame offset value is between the first frame timestamp and the zero time (such as GPS 0 minutes and 0 seconds) difference), but the calculation process is too complex and is not conducive to efficient positioning of interference sources. For this reason, a method that can simplify the calculation of frame offset values is urgently needed.

Contents of the invention

In view of this, the present invention provides an LTE frame offset value calculation method, device, system, equipment and storage medium, which uses a sampling tool with successful time synchronization to sample data from the target base station at a specified sampling rate, and The sampling data is judged for synchronization, and then the LTE frame offset value of the target base station is calculated based on the specified sampling rate and the number of samples collected in the sampling data.

The first object of the present invention is to provide an LTE frame offset value calculation method.

The second object of the present invention is to provide an LTE frame offset value calculation device.

The third object of the present invention is to provide an LTE frame offset value calculation system.

A fourth object of the present invention is to provide a computer device.

The fifth object of the present invention is to provide a storage medium.

The first object of the present invention can be achieved by adopting the following technical solutions:

A method for calculating LTE frame offset value, the method includes:

Synchronize sampling tools;

Use a sampling tool that has successfully timed to sample target base station data at a specified sampling rate, where the target base station data includes a sampling data buffer and a sampling count;

Based on the sampling data buffer, according to the LTE protocol, the protocol signal is searched, the protocol signal is compared with the synchronization signal, and the judgment result is output;

If the judgment result is synchronized, record the current sampling count and calculate the frame offset value of the target base station; if the judgment result is not synchronized, return to the sampling tool with successful time synchronization to sample the target base station data at the specified sampling rate, and perform subsequent steps.

Further, the current sampling count is recorded and the frame offset value of the target base station is calculated as follows:

Among them, R _offset represents the frame offset value of the target base station, C _S represents the current collection count, f _s represents the specified sampling rate, and int() represents rounding.

Further, synchronizing the time of the sampling tool specifically includes: using the positioning system to synchronize the time of the sampling tool with the time of the positioning system.

Further, the sampling tool is a wireless radio frequency card, which includes a radio frequency receiving antenna, a positioning system response pulse interface, a radio frequency data processing AD chip and a transmission interface.

Further, the positioning system includes a GPS positioning system and a Beidou positioning system.

Further, the protocol signal is compared with the synchronization signal and the judgment result is output, specifically including:

If the protocol signal matches the auxiliary synchronization signal, the judgment result is synchronized; if the protocol signal does not match the auxiliary synchronization signal, the judgment result is out of sync.

The second object of the present invention can be achieved by adopting the following technical solutions:

An LTE frame offset value calculation device, the device includes:

The timing module is used to synchronize sampling tools;

A sampling module, used to sample target base station data at a specified sampling rate using a sampling tool that has successfully timed the timing. The target base station data includes a sampling data buffer and a sampling count;

The discrimination module is used to search for protocol signals based on the LTE protocol based on the sampling data buffer, compare the protocol signals with the synchronization signals, and output the judgment results;

The calculation module is used to record the current sampling count and calculate the frame offset value of the target base station if the judgment results are synchronized; if the judgment results are not synchronized, return to the sampling tool that has successfully synchronized the time to sample the target base station data at the specified sampling rate. and perform the next steps.

The third object of the present invention can be achieved by adopting the following technical solutions:

An LTE frame offset value calculation system, the system includes an antenna device, a clock pulse device, a sampling device and a computer; the antenna device, the clock pulse device, and the computer are respectively connected to the sampling device, and the clock pulse device includes a positioning device The system responds to a pulse interface and a positioning system chip. The sampling device has a built-in radio frequency data processing AD chip. The positioning system chip is connected to the sampling device through the positioning system response pulse interface.

Antenna equipment, used to obtain the signal of the target base station;

Clock pulse device, used to synchronize sampling equipment;

Sampling device, used to sample target base station data, where the target base station data includes a sampling data buffer and a sampling count;

A computer, used to execute the above LTE frame offset value calculation method.

The fourth object of the present invention can be achieved by adopting the following technical solutions:

A computer device includes a processor and a memory for storing a program executable by the processor. When the processor executes the program stored in the memory, the above-mentioned LTE frame offset value calculation method is implemented.

The fifth object of the present invention can be achieved by adopting the following technical solutions:

A storage medium stores a program. When the program is executed by a processor, the above-mentioned LTE frame offset value calculation method is implemented.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention uses a sampling tool that has successfully synchronized time to sample data from a target base station at a specified sampling rate, and performs synchronous judgment on the sampling data, and then calculates the target based on the specified sampling rate and the number of samples collected in the sampling data. The LTE frame offset value of the base station. This calculation method greatly simplifies the calculation process of the LTE frame offset value and can improve the calculation efficiency. In addition, during the above calculation process, the present invention does not need to use a dedicated decoding chip to perform the decoding operation. Thus reducing costs.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

FIG. 1 is a flow chart of an LTE frame offset value calculation method according to Embodiment 1 of the present invention.

FIG. 2 is a structural block diagram of an LTE frame offset value calculation device according to Embodiment 2 of the present invention.

Figure 3 is a structural block diagram of an LTE frame offset value calculation system according to Embodiment 3 of the present invention.

Figure 4 is a structural block diagram of a computer device according to Embodiment 4 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection of the present invention. scope.

Example 1:

As shown in Figure 1, this embodiment provides a method for calculating an LTE frame offset value. The method includes the following steps:

S101. Synchronize the sampling tool.

The sampling tool in this embodiment is a wireless radio frequency card, which includes: a radio frequency receiving antenna, one or more GPS positioning system response pulse interfaces/Beidou system response pulse interfaces, a radio frequency data processing AD chip and one or more USB interfaces .

This embodiment uses the GPS/Beidou chip to request the GPS positioning system/Beidou positioning system to provide timing services to the wireless radio frequency card.

In the above timing service, this embodiment chooses to perform timing service on the wireless radio frequency card in an outdoor open environment, where the outdoor open environment is an unobstructed environment, that is, an environment where information from the GPS or Beidou positioning system can be obtained; if due to the external environment ( If the weather or surrounding obstruction) changes, resulting in the failure of successful timing, the request needs to be continued until the wireless radio frequency card is successfully timed.

The time synchronization in this embodiment synchronizes the time of the wireless radio frequency card with the time of the GPS positioning system/Beidou positioning system.

S102. Use a sampling tool that has successfully timed to sample target base station data at a specified sampling rate. The target base station data includes a sampling data buffer and a sampling count.

After the wireless radio frequency card is successfully timed, the wireless radio frequency card is turned on and the sampling rate f _s is specified to sample data from the target base station.

During the above data sampling process, the sampling data buffering and sampling counting can be turned on at the nearest integer second according to the timing of the GPS/Beidou chip.

The data sampled in this embodiment are sampling data buffer and sampling count.

S103. Based on the sampling data buffer, search the protocol signal according to the LTE protocol, compare the protocol signal with the synchronization signal, and output the judgment result.

Make a synchronization judgment on the sampling data buffer, specifically: search for possible primary synchronization signals (Primary Synchronization Signal, PSS) and secondary synchronization signals (Secondary Synchronization Signal, SSS) according to the corresponding LTE protocol. If the SSS matching the protocol appears, the synchronization is successful; if the SSS matching the protocol does not appear, the synchronization fails.

The protocol signals in this embodiment include PSS and SSS, and the synchronization signal in this embodiment is SSS.

S104. If the judgment result is synchronized, record the current sampling count and calculate the frame offset value of the target base station; if the judgment result is not synchronized, return to the sampling tool that has successfully synchronized the time to sample the target base station data at the specified sampling rate, and perform subsequent step.

In step S104, the current sampling count is recorded, and the frame offset value of the target base station is calculated, as follows:

This embodiment performs the above four steps to finally obtain the frame offset value of the target base station.

Example 2:

As shown in Figure 2, this embodiment provides an LTE frame offset value calculation device. The device includes a time synchronization module 201, an acquisition module 202, a determination module 203 and a calculation module 204. The specific functions of each module are as follows:

Time synchronization module 201, used to synchronize sampling tools;

The sampling module 202 is used to sample target base station data at a specified sampling rate using a sampling tool that has successfully timed the timing. The target base station data includes a sampling data buffer and a sampling count;

The judgment module 203 is used to search for protocol signals based on the LTE protocol based on the sampling data buffer, compare the protocol signals with the synchronization signals, and output the judgment results;

The calculation module 204 is used to record the current sampling count and calculate the frame offset value of the target base station if the judgment result is synchronized; if the judgment result is not synchronized, return to sampling the target base station data at a specified sampling rate using a sampling tool that has successfully synchronized the time. , and perform the next steps.

The specific implementation of each module in this embodiment can be referred to the above-mentioned Embodiment 1, which will not be described one by one here. It should be noted that the device provided in this embodiment is only exemplified by the division of the above-mentioned functional modules. In practical applications, , the above functions can be assigned to different functional modules as needed, that is, the internal structure is divided into different functional modules to complete all or part of the functions described above.

Example 3:

As shown in Figure 3, this embodiment provides an LTE frame offset value calculation system. The system includes an antenna device 301, a clock pulse device, a sampling device 303 and a computer 304; the antenna device 301, the clock pulse device, the computer 304 are respectively connected to the sampling device 301. The clock pulse device includes a positioning system response pulse interface 3021 and a positioning system chip 3022. The sampling device 303 has a built-in radio frequency data processing AD chip 3031. The positioning system chip 3022 passes through the positioning system. The response pulse interface 3021 is connected to the sampling device 303 .

Antenna device 301, used to obtain the signal of the target base station;

Clock pulse device, used to synchronize sampling equipment;

Sampling device 303, used to sample target base station data, where the target base station data includes a sampling data buffer and a sampling count;

Computer 304 is used to implement the LTE frame offset value calculation method in Embodiment 1 above, as follows:

Synchronize sampling tools;

Example 4:

As shown in FIG. 4 , this embodiment provides a computer device, which includes a processor 402 , a memory, an input device 403 , a display device 404 and a network interface 405 connected through a system bus 401 . Among them, the processor 402 is used to provide computing and control capabilities, and the memory includes a non-volatile storage medium 406 and an internal memory 407. The non-volatile storage medium 406 stores an operating system, computer programs and databases. The internal memory 407 is The operating system and computer program in the non-volatile storage medium 406 provide an environment for running. When the computer program is executed by the processor 402, the LTE frame offset value calculation method of the above-mentioned Embodiment 1 is implemented, as follows:

Synchronize sampling tools;

Example 5:

This embodiment provides a storage medium, which is a computer-readable storage medium that stores a computer program. When the computer program is executed by a processor, the LTE frame offset value calculation method of the above-mentioned Embodiment 1 is implemented, as follows: :

Synchronize sampling tools;

If the judgment result is synchronized, record the current sampling count and calculate the frame offset value of the target base station; if the judgment result is not synchronized, return to the sampling tool that has successfully synchronized the time to sample the target base station data at the specified sampling rate, and perform subsequent steps.

It should be noted that the computer-readable storage medium in this embodiment may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples of computer readable storage media may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard drive, random access memory (RAM), read only memory (ROM), removable Programmed read-only memory (EPROM or flash memory), fiber optics, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.

In this embodiment, a computer-readable storage medium may be any tangible medium that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus, or device. In this embodiment, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, in which a computer-readable program is carried. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable storage medium other than computer-readable storage media that can be sent, propagated, or transmitted for use by or in connection with an instruction execution system, apparatus, or device program. Computer programs embodied on computer-readable storage media may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

The above-mentioned computer-readable storage medium can be used to write a computer program for executing this embodiment in one or more programming languages or a combination thereof. The above-mentioned programming languages include object-oriented programming languages such as Java, Python, and C++. Also included are conventional procedural programming languages—such as C or similar programming languages. The Program may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In situations involving remote computers, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer, such as through the Internet using an Internet service provider. ).

To sum up, the present invention uses a sampling tool that has successfully synchronized time to sample data from the target base station at a specified sampling rate, and performs synchronization judgment on the sampling data, and then based on the specified sampling rate and the samples collected in the sampling data Number, the LTE frame offset value of the target base station is calculated. This calculation method greatly simplifies the calculation process of the LTE frame offset value and can improve the calculation efficiency; in addition, in the above calculation process, the present invention does not need to use a dedicated decoding The chip performs the decoding operation, thus reducing costs.

The above are only preferred embodiments of the patent of the present invention, but the scope of protection of the patent of the present invention is not limited thereto. Any person familiar with the technical field can, within the scope disclosed by the patent of the present invention, proceed according to the patent of the present invention. Any equivalent substitution or change of the technical solution and its inventive concept shall fall within the scope of protection of the patent of the present invention.

Claims

A method for calculating LTE frame offset values, characterized in that the method includes:

Synchronize sampling tools;

Use a sampling tool that has successfully timed to sample target base station data at a specified sampling rate, where the target base station data includes a sampling data buffer and a sampling count;

Based on the sampling data buffer, according to the LTE protocol, the protocol signal is searched, the protocol signal is compared with the synchronization signal, and the judgment result is output;

If the judgment result is synchronized, record the current sampling count and calculate the frame offset value of the target base station; if the judgment result is not synchronized, return to the sampling tool with successful time synchronization to sample the target base station data at the specified sampling rate, and perform subsequent steps.
The LTE frame offset value calculation method according to claim 1, characterized in that recording the current sampling count and calculating the frame offset value of the target base station is as follows:

Among them, R offset represents the frame offset value of the target base station, C S represents the current collection count, f s represents the specified sampling rate, and int() represents rounding.
The LTE frame offset value calculation method according to claim 1, wherein the synchronizing the time of the sampling tool specifically includes: using the positioning system to time the sampling tool so that the time of the sampling tool is synchronized with the time of the positioning system. .
The LTE frame offset value calculation method according to claim 3, characterized in that the sampling tool is a wireless radio frequency card.
The LTE frame offset value calculation method according to claim 3, characterized in that the positioning system includes a GPS positioning system and a Beidou positioning system.
The LTE frame offset value calculation method according to claim 1, characterized in that the protocol signal is compared with the synchronization signal and a judgment result is output, specifically including:

If the protocol signal matches the auxiliary synchronization signal, the judgment result is synchronized; if the protocol signal does not match the auxiliary synchronization signal, the judgment result is out of sync.
An LTE frame offset value calculation device, characterized in that the device includes:

The timing module is used to synchronize sampling tools;

A sampling module, used to sample target base station data at a specified sampling rate using a sampling tool that has successfully timed the timing. The target base station data includes a sampling data buffer and a sampling count;

The discrimination module is used to search for protocol signals based on the LTE protocol based on the sampling data buffer, compare the protocol signals with the synchronization signals, and output the judgment results;

The calculation module is used to record the current sampling count and calculate the frame offset value of the target base station if the judgment results are synchronized; if the judgment results are not synchronized, return to the sampling tool that has successfully synchronized the time to sample the target base station data at the specified sampling rate. and perform the next steps.
An LTE frame offset value calculation system, characterized in that the system includes an antenna device, a clock pulse device, a sampling device and a computer; the antenna device, the clock pulse device and the computer are respectively connected to the sampling device, and the clock The pulse device includes a positioning system response pulse interface and a positioning system chip. The sampling device has a built-in radio frequency data processing AD chip. The positioning system chip is connected to the sampling device through the positioning system response pulse interface.

Antenna equipment, used to obtain the signal of the target base station;

Clock pulse device, used to synchronize sampling equipment;

Sampling device, used to sample target base station data, where the target base station data includes a sampling data buffer and a sampling count;

A computer, configured to execute the LTE frame offset value calculation method according to any one of claims 1-6.
A computer device, including a processor and a memory for storing a program executable by the processor, characterized in that when the processor executes the program stored in the memory, the LTE frame offset described in any one of claims 1-6 is implemented. Shift calculation method.
A storage medium stores a program. When the program is executed by a processor, the LTE frame offset value calculation method described in any one of claims 1-6 is implemented.