CN114501606A - Physical cell identity detection method and device and electronic equipment - Google Patents
Physical cell identity detection method and device and electronic equipment Download PDFInfo
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Abstract
The invention provides a physical cell identifier detection method, a physical cell identifier detection device and electronic equipment; relates to the technical field of wireless communication; the reliability of signal synchronization can be improved by detecting the availability of physical cell identities. The method comprises the following steps: receiving wireless signals of a plurality of cells; determining a physical cell identity of each cell through the wireless signal; and detecting whether the physical cell identification is available or not to obtain the available physical cell identification.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for detecting a physical cell identifier, and an electronic device.
Background
The Physical-layer Cell Identity (PCI) is used to distinguish the radio signals of different cells. In Long Term Evolution (LTE), a terminal initially enters a cell, needs to synchronize with a base station by monitoring real-time information sent by the base station in a downlink direction, and receives information of the base station to establish a connection. In practical application, a terminal receives different PCIs of a plurality of cells, but each PCI is not true and valid for the terminal, and if some invalid PCIs exist, decoding and demodulation of the terminal are failed, and the working efficiency of the system is reduced.
Disclosure of Invention
The invention provides a physical cell identifier detection method, a physical cell identifier detection device and electronic equipment, which can reduce the problem of failure in decoding and demodulating wireless signals by a terminal in the prior art by detecting the usability of PCI.
In a first aspect, the present invention provides a method for detecting a physical cell identifier, including:
receiving wireless signals of a plurality of cells;
determining a physical cell identity of each cell through the wireless signal;
and detecting whether the physical cell identification is available or not to obtain the available physical cell identification.
According to an exemplary embodiment of the present invention, the detecting whether the physical cell identifier is available includes:
acquiring a cell specific reference signal through the physical cell identifier;
calculating the correlation between the cell reference signal and a preset reference signal;
determining whether the physical cell identity is available through the correlation.
According to an exemplary embodiment of the present invention, the calculating the correlation between the cell reference signal and the preset cell reference signal includes:
determining a first correlation between the cell reference signal and a preset local reference signal;
and accumulating the first correlation obtained by calculating the reference signal of each symbol to obtain the correlation between the cell reference signal and a preset cell reference signal.
According to an exemplary embodiment of the present invention, determining whether the physical cell identifier is available through the correlation includes:
and comparing the amplitude of the correlation value with a preset threshold value, and if the amplitude of the correlation value exceeds the preset threshold value, determining that the physical cell identifier is available.
According to an exemplary embodiment of the present invention, determining a first correlation between the cell reference signal and the preset reference signal includes:
carrying out fast Fourier transform on each symbol of a received cell to obtain frequency domain data of each symbol;
calculating a first correlation between the per-symbol reference signal and the preset local reference signal through the frequency domain data.
According to an exemplary embodiment of the present invention, after detecting whether the physical cell identifier is available, the method further includes:
discarding the physical cell identity and re-searching for signals.
In a second aspect, the present invention further provides a cell identifier detecting apparatus, including:
the radio frequency receiving module is used for receiving wireless signals of a plurality of cells;
an identifier determining module, configured to determine, through the wireless signal, a physical cell identifier of each cell;
and the identification detection module is used for detecting whether the physical cell identification is available or not to obtain the available physical cell identification.
In a third aspect, the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement any one of the above methods for detecting a physical cell identifier.
In a fourth aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a physical cell identity detection method as described in any of the above.
In a fifth aspect, the present invention also provides a computer program product comprising a computer program, which when executed by a processor, implements the physical cell identity detection method according to any one of the above.
According to the physical cell identifier detection method, the physical cell identifier detection device and the electronic equipment, when wireless signals of a plurality of cells are received, available PCIs are filtered out from the PCIs of the plurality of cells by detecting whether the PCIs of the wireless signals are available. The wireless signals are demodulated and descrambled through the available PCI, so that the failure of demodulation and descrambling tasks can be avoided, and the reliability of the system is improved. In addition, compared with the prior art, the scheme verifies the PCI before demodulation and descrambling tasks, so that invalid demodulation and descrambling can be reduced, and the processing efficiency is improved.
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In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a physical cell identity detection method provided in the present invention;
fig. 2 is a schematic diagram of a signal structure of a physical cell identity detection method provided in the present invention;
fig. 3 is a second flowchart of the method for detecting a physical cell identifier according to the present invention;
FIG. 4 is a schematic diagram of a system framework provided by the present invention;
fig. 5 is a schematic structural diagram of a physical cell identifier detection apparatus provided in the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the process of cell search, after the PCI value is searched, the PCI is utilized to demodulate and descramble the received information. Then, decoding and CRC check are carried out on the descrambled information, if the CRC check is not passed, the PCI is discarded, and searching is carried out again. Therefore, in the related art, no matter whether the PCI is real or reliable, the operations such as demodulation, descrambling, decoding, CRC check and the like are required, which results in low efficiency.
Based on this, the present invention first provides a physical cell identity detection method. The method can be executed by electronic equipment such as a mobile phone, a personal computer, a tablet computer or a server, and the expression form of the electronic equipment is not particularly limited by the invention.
The following describes a technical solution of the physical cell identity detection method according to the present invention with reference to fig. 1 to 4.
As shown in fig. 1, the physical cell identity detection method may include the following steps:
step S10: wireless signals of a plurality of cells are received.
Before the terminal does not establish a connection with the base station, the terminal may receive wireless signals transmitted by the base station through a broadcast channel, and perform downlink synchronization through the wireless signals. The radio signals are organized into radio frame transmissions. One radio frame is 10ms, which includes 10 subframes of 1ms each. Each subframe, in turn, is composed of a plurality of slots (slots), each slot being composed of a plurality of symbols (OFDM).
Step S20: determining a physical cell identity for each cell from the wireless signal.
Firstly, PSS synchronization processing is carried out on wireless signals, and information such as an intra-group ID (ID with Cell group) of a Cell, half frame timing, integral multiple and decimal frequency offset estimation and the like is obtained. Then, the frequency offset of the time domain signal of the received symbol is corrected by integer-multiple and fractional-multiple frequency offset estimation, and Fast Fourier Transform (FFT) is performed. Finally, cell Group id and frame timing information are determined by SSS synchronization processing. When a terminal such as a mobile phone or a monitoring device is to communicate with a certain cell, the terminal may be determined by a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) transmitted by the cell every 5 ms.
The cell group ID was set as NID1, the group ID was set as NID2, and the PCI of the cell was obtained using NID1 and NID 2. The LTE system provides 504 PCIs in total, and when the gateway is configured, a number between 0 and 503 is configured for a cell, wherein the number can be composed of NID1 and NID 2. PCI ═ 3 × NID1) + NID 2.
Step S30: and detecting whether the physical cell identification is available or not to obtain an available physical cell identification, and processing the wireless signal corresponding to the available physical cell identification.
For example, determining whether the PCI of the Cell is available may be determined by detecting a correlation between a Cell-specific reference signal (CRS) and a local reference signal preset by the terminal. Specifically, a cell specific reference signal is obtained through a PCI; then calculating the correlation between the specific reference signal of the cell and a preset reference signal; whether the PCI is available is determined by correlation.
The preset reference signal is a CRS sequence predetermined locally by the terminal, and is hereinafter referred to as a local CRS. The PCI of a cell corresponds one-to-one to the position of a cell-specific reference signal (hereinafter, simply referred to as cell CRS). The PCI obtained according to the steps can determine the position of the CRS signal of the cell from the wireless signal of the cell, thereby obtaining the CRS data of the cell. The CRS signal occupies a plurality of symbols, and when calculating the correlation between the local CRS and the cell CRS, the correlation between the CRS in each symbol of the cell and the local CRS, i.e. the first correlation, may be determined. And then accumulating each correlation value, namely adding a correlation value between a symbol 0 of the local CRS and a symbol 0 of the cell CRS, a correlation value between a symbol 4 of the local CRS and a symbol 4 of the cell CRS, a correlation value between a symbol 7 of the local CRS and a symbol 7 of the cell CRS and a correlation value between a symbol 11 of the local CRS and a symbol 11 of the cell CRS, and taking the obtained result as the correlation between the cell reference signal and the preset cell reference signal.
Illustratively, as shown in fig. 2, the CRS may be located according to the PCI formed by NID1 and NID2, so as to extract the CRS signal. The CRS signal is included in symbols 0, 4, 7, and 11 of subframe 0. The time domain signal received from the base station is converted into a digital signal through a digital-to-analog converter, and then the frequency domain signal of each symbol is obtained through FFT conversion. When receiving one frequency domain data, it can be determined whether the received data is CRS data corresponding to PCI. Specifically, after timing information of a radio frame is determined, a time domain symbol of a subframe 0 is acquired, data of symbols 0, 4, 7 and 11 of the subframe 0 are acquired respectively, then FFT transformation is carried out on the acquired data of the symbols 0, 4, 7 and 11, the time domain symbol is transformed into frequency domain data corresponding to each symbol, CRS signals of each symbol are extracted according to NID1 and NID2, each time domain symbol contains 12 CRS frequency domain data at most, therefore, the extracted CRS signals of the subframe 0 contain 48 CRS frequency domain data at most, and then relevant accumulation operation is carried out on the extracted CRS signals of the subframe 0, and the availability of a cell is determined.
In particular, with continued reference to fig. 2, the local CRS is retrieved from the local ROM memory module. The local CRS may be pre-stored in the corresponding local ROM storage module, that is, a ROM storage module may be created for the CRS in advance, and the initialization data of the ROM storage module is the local CRS frequency domain data with the number calculated in advance. Each CRS signal is represented by 2 bits, and the CRS signal of one symbol is 24 bits. According to the values of NID1 and NID2 and half frame timing, 24-bit data of 0, 4, 7 and 11 can be read from the ROM storage model in sequence, so that local CRS data can be obtained. And then, carrying out correlation operation on each symbol of the local CRS and each symbol corresponding to the cell CRS to obtain the correlation corresponding to each symbol, and then accumulating the correlations of 4 symbols to obtain a value which is the correlation between the local CRS and the cell CRS.
The higher the correlation between the local CRS and the cell CRS, the higher the probability that the PCI of the cell is available. For example, the correlation between the local CRS and the received CRS is compared with a preset threshold, and if the correlation exceeds the preset threshold, the cell PCI may be determined to be an available PCI. And if the correlation between the local CRS and the received CRS does not exceed the preset threshold value, determining the PCI of the cell as the invalid PCI. Invalid PCIs, when synchronized, cause failure in demodulation, descrambling, decoding and CRC check of signals, resulting in a reduction in cell search efficiency. The terminal may discard the invalid PCI and re-search. Therefore, in the embodiment, whether the PCI is available can be determined before CRC check is performed, so that an available PCI is screened out, and reliability of signal synchronization and efficiency of cell search are ensured. The preset threshold value may be determined by a designer according to experience, and this embodiment is not particularly limited in this respect.
After determining that the PCI is an available PCI, the terminal may perform various processing such as signal demodulation, descrambling, decoding, and the like by using the PCI, thereby establishing a connection with the cell. In addition, when the signal is demodulated, descrambled, decoded, CRC (cyclic redundancy check) checked and the like, the processing failure caused by invalid PCI (peripheral component interconnect) is avoided, and the reliability and the processing efficiency of signal synchronization can be improved.
As shown in fig. 3, the present solution may include steps S301 to S3. Specifically, in step S301, a local storage module is created. A block of memory module may be allocated in the ROM of the terminal for storing the local CRS signals. In step S302, NID1 and NID2 are determined. NID2 and NID2 were determined by detecting PSS and SSS signals. In step S303, the local CRS sequence is read from the local storage module. And reading 24-bit local CRS data of the symbol 0, the symbol 4, the symbol 7 and the symbol 11 in the storage module according to the values of the NID2 and NID1 and the information sequence of the half frame timing. Illustratively, 2 bits of data are read at a time, e.g., 2 bits of data in symbol 0 are read for the first time, and 2 bits of read data are shifted to the right for the second time. In step S304, symbol data containing a CRS signal (i.e., receiving CRS) is received. The input ready signal of the FFT is set high and data containing symbol 0, symbol 4, symbol 7 and symbol 11 of the CRS is awaited to be received. In step S305, it is determined whether or not the data is data of symbol 0, symbol 4, symbol 7, or symbol 11, and if so, step S306 is executed, and if not, reception of the next data is waited. In step S306, it is determined whether or not the CRS data is used. The method comprises the steps that signals transmitted by a base station are converted into IQ data through FFT, whether the data are CRS data or not is judged for each IQ data, and if the serial number X% 6 of the data is 3 (NID 1% 2) + NID2, the data are the CRS data. The value of NID 1% 2 can be obtained by testing for NID [0 ]. The value of X% 6 can be determined by a table lookup. Since X is the number of subcarriers for which symbol frequency domain data is received, the count is increased from 0 to 71, and X may also be repeatedly counted from 0 to 5, thereby completing the remainder operation. In step S307, CRS data is estimated. Namely, the correlation value of the currently received CRS and the currently read local CRS is calculated. In step S308, the accumulated sum of the correlation values is calculated. In the step, the correlation value obtained by each calculation is accumulated with the previous correlation value to obtain an accumulated sum. For example, the value of the initialized SUM register SUM is 0, the SUM is accumulated on the value of the SUM after each correlation value is obtained, and the calculated SUM is the final correlation accumulation value of the local CRS and the received CRS. In step S309, the local storage module is shifted to the right by 2 bits. In step S310, it is determined whether correlation accumulation and calculation of 12 CRSs are completed. If the correlation value accumulation sum of 12 CRSs is not completed, the process goes to step S305 to receive the next data belonging to symbols 0, 4, 7, and 11. If the accumulation of the correlation values of 12 CRSs is completed, one symbol is calculated, and then step S311 is performed. In step S311, it is determined whether the correlation value accumulation and summation of 4 symbols is completed. If the accumulation of the correlation values of 4 symbols is not completed, go to step S303 to continue accumulating the correlation values of 12 CRSs of the next symbol until the accumulation of the correlation values of 4 symbols is completed. In step S312, the magnitude of the cumulative sum of correlation values is calculated. The magnitude may be modulo the cumulative sum of the correlation values. In step S313, it is determined whether the amplitude is greater than the predetermined threshold, and if so, step S314 is executed to output a valid PCI. The PCI is the PCI formed by NID1 and NID2 in step S302. If the amplitude is not greater than the preset threshold value, the search can be performed again.
The above embodiments of the present invention can be implemented by a Field Programmable Gate Array (FPGA). The FPGA chip has the characteristics of abundant wiring resources, repeated programming, high integration level, low cost and the like. In an exemplary embodiment, the system framework of the present solution may be as shown in fig. 4. The terminal 401 is an electronic device that performs the above-described physical cell search method. The terminal 401 includes a radio frequency subsystem 402, an FPGA-based PCI search subsystem 403, an FPGA-based PCI authentication subsystem 404, and a configuration management subsystem 405.
The rf subsystem 402 may receive a signal transmitted by the base station 406, and the FPGA-based PCI search subsystem 403 detects the primary synchronization signal PSS based on the signal received by the rf subsystem 402, and determines the intra-group ID (i.e., NID2), the half frame timing, the integer multiple, and the fractional frequency offset estimation according to the primary synchronization signal PSS. The FPGA-based PCI search subsystem 403 may then also determine the field timing, detect the secondary synchronization signal SSS, and determine the cell group ID (i.e., NID1) and the frame timing.
The FPGA-based PCI verification subsystem 404 may obtain NID1 and NID2 determined by the FPGA-based PCI search subsystem 403, and calculate the cell PCI using NID1 and NID 2. And determining the position of the CRS signal according to the cell PCI, thereby extracting the CRS frequency domain signals of the symbol 0, the symbol 4, the symbol 7 and the symbol 11 on the subframe 0 for calculation, and calculating the correlation accumulation sum of the received CRS signal and the local CRS signal. Next, the FPGA-based PCI verification subsystem 404 may compare the amplitude of the correlation cumulative sum with a preset threshold, and output the PCI formed by NID1 and NID2 if the amplitude of the correlation cumulative sum exceeds the preset threshold, or discard the PCI if the amplitude of the correlation cumulative sum is lower than the preset threshold, thereby achieving the purpose of PCI verification.
The configuration management subsystem 405 is a control center that manages and controls the other subsystems.
Therefore, the technical scheme is realized based on the FPGA, the advantage of high FPGA signal processing speed can be exerted, and the verification of the PCI can be completed quickly, so that the output PCI is ensured to be the effective and available PCI, the effectiveness of the terminal in screening the cell PCI is improved, and the reliability of the synchronous information between the terminal and the base station is ensured.
Furthermore, the present invention also provides a physical cell identity detection apparatus, which can be used to execute the physical cell identity detection method. The following describes a physical cell identifier detection apparatus provided in the present invention.
As shown in fig. 5, the physical cell identity detecting device 50 may include a signal receiving module 51, an identity determining module 52, and an identity detecting module 53.
Specifically, the signal receiving module 51 is configured to receive wireless signals of multiple cells. An identity determining module 52, configured to determine a physical cell identity of each cell through the wireless signal. An identifier detecting module 53, configured to detect whether the physical cell identifier is available, so as to obtain an available physical cell identifier.
In an exemplary embodiment of the present invention, the identifier detecting module 53 specifically includes a reference signal determining module, configured to obtain a cell-specific reference signal through the physical cell identifier; the correlation operation module is used for calculating the correlation between the cell reference signal and a preset reference signal; a verification module for determining whether the physical cell identity is available through the correlation.
In an exemplary embodiment of the present invention, the correlation operation module may include: a correlation value calculation module, configured to determine a first correlation between a symbol in the cell reference signal and a symbol at the same position in the preset cell reference signal; and the accumulation and calculation module is used for accumulating the first correlation obtained by calculating each symbol in the cell reference signal so as to obtain the correlation between the cell reference signal and a preset cell reference signal.
In an exemplary embodiment of the present invention, the identifier detecting module 53 is specifically configured to compare the correlation with a preset threshold, and if the correlation exceeds the preset threshold, determine that the physical cell identifier is available.
In an exemplary embodiment of the present invention, the correlation value calculating module further includes a fourier transform module, configured to perform a fast fourier transform on each symbol of the received cell reference signal, so as to obtain frequency domain data of each symbol; and a calculation module, configured to calculate, through the frequency domain data, a first correlation between each symbol and a symbol at the same position in the preset reference signal.
In an exemplary embodiment of the invention, the apparatus further comprises: and the resetting module is used for discarding the physical cell identifier and searching the signal again.
As each functional module of the physical cell identifier detection apparatus in the exemplary embodiment of the present invention corresponds to the steps of the exemplary embodiment of the physical cell identifier detection method, please refer to the above-mentioned embodiment of the physical cell identifier detection method for details that are not disclosed in the embodiment of the apparatus of the present invention.
Fig. 6 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 6: a processor (processor)610, a communication Interface (Communications Interface)620, a memory (memory)630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform the above-described acupoint detection device method, the method comprising: step S10 receiving wireless signals of a plurality of cells; step S20, determining the physical cell mark of each cell through the wireless signal; step S30, detecting whether the physical cell identifier is available, to obtain an available physical cell identifier.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the acupoint detection device method provided by the above methods, the method including: step S10 receiving wireless signals of a plurality of cells; step S20, determining the physical cell mark of each cell through the wireless signal; step S30, detecting whether the physical cell identifier is available, to obtain an available physical cell identifier.
In still another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the acupoint detection device method provided by the above methods, the method including: step S10 receiving wireless signals of a plurality of cells; step S20, determining the physical cell mark of each cell through the wireless signal; step S30, detecting whether the physical cell identifier is available, to obtain an available physical cell identifier.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting Physical Cell Identity (PCI), comprising:
receiving wireless signals of a plurality of cells;
determining a physical cell identity of each cell through the wireless signal;
and detecting whether the physical cell identification is available or not to obtain the available physical cell identification.
2. The method of claim 1, wherein the detecting whether the physical cell identifier is available comprises:
acquiring a cell specific reference signal through the physical cell identifier;
calculating the correlation between the cell reference signal and a preset reference signal;
determining whether the physical cell identity is available through the correlation.
3. The method of claim 2, wherein calculating the correlation of the cell reference signal with a preset cell reference signal comprises:
determining a first correlation of the cell reference signal and a preset local reference signal;
and accumulating the first correlation values obtained by calculating the reference signals in each symbol of the cell to obtain the correlation between the cell reference signals and the reference signals of the preset cell.
4. The method of claim 2, wherein the determining whether the physical cell identifier is available through the correlation comprises:
and comparing the amplitude of the correlation value with a preset threshold value, and if the amplitude of the correlation value exceeds the preset threshold value, determining that the physical cell identifier is available.
5. The method of claim 3, wherein determining the first correlation of the cell reference signal and the local reference signal comprises:
carrying out fast Fourier transform on each symbol of a received cell to obtain frequency domain data of each symbol;
calculating a first correlation between the reference signal in said each symbol and the local reference signal in said each symbol from said frequency domain data.
6. The method of claim 1, wherein after detecting whether the physical cell identity is available, the method further comprises:
discarding the physical cell identity and re-searching for signals.
7. A physical cell identity detection apparatus, comprising:
the signal receiving module is used for receiving wireless signals of a plurality of cells;
an identifier determining module, configured to determine a physical cell identifier of each cell through the wireless signal;
and the identification detection module is used for detecting whether the physical cell identification is available or not to obtain the available physical cell identification.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the physical cell identity detection method according to any one of claims 1 to 6 when executing the program.
9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the physical cell identity detection method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the physical cell identity detection method according to any of claims 1 to 6.
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