CN111263396B - System and method for realizing blind search switching control of different communication modes for full-mode sweep generator - Google Patents
System and method for realizing blind search switching control of different communication modes for full-mode sweep generator Download PDFInfo
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
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Abstract
The invention relates to a system for realizing blind search switching control of different communication modes, which is applied to a full-mode sweep generator, and comprises a radio frequency board, wherein the radio frequency board is connected with an RF antenna through an SMA cable; the high-speed interface conversion board is connected with the input and output ends of the radio frequency board through a high-speed connector; the baseband board group is connected with the input and output ends of the high-speed interface conversion board through the high-speed connector; the interface board is connected with the input and output ends of the baseband board group through a wire-to-board connector; the upper computer is connected with the input and output ends of the interface board through a network port. The invention also relates to a method for realizing the blind search switching control of different communication modes, which is applied to the full-mode sweep generator. The system and the method for realizing the blind search switching control of different communication modes by using the full-mode sweep generator reduce the measurement interval to the maximum extent, realize the quick switching of the blind search of different communication modes and improve the utilization efficiency and the operation speed of the system.
Description
Technical Field
The invention relates to the field of 5G communication, in particular to the field of network optimization test, and particularly relates to a system and a method for realizing blind search switching control of different communication modes, which are applied to a full-mode sweep generator.
Background
With the development of 5G technology, 5G communication test instruments are attracting attention as an important component of 5G industry development. Under the condition that the current 5G technology is deeply developed and a plurality of networks coexist, how to judge and measure the interference conditions of network coverage and different communication systems under the condition of the coexistence of the plurality of networks is a very concerned problem in the whole industry. The full-system sweep generator is an indispensable tool for network coverage and interference conditions of different communication systems, and the full-system sweep generator communication system blind search switching plays an increasingly important role in improving test efficiency and test accuracy.
For blind search switching of a full-system sweep generator communication system, the traditional method is serial measurement of different frequency points of different systems, the greatest problem of the method is that data is easy to miss, the coverage condition of all current communication networks cannot be completely reflected, the mutual interference condition among different networks cannot be correctly displayed, and the performance is particularly obvious when the network is pulled.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for realizing blind search switching control of different communication modes by using a full-mode sweep generator, which have the advantages of high satisfaction efficiency, simple and convenient operation and wider application range.
In order to achieve the above purpose, the system and the method for realizing the blind search switching control of different communication modes, which are applied to the full-mode sweep generator, are as follows:
the system and the method for realizing blind search switching control of different communication modes are mainly characterized in that the system comprises:
the input end of the radio frequency board is connected with the RF antenna through an SMA cable;
the input and output ends of the high-speed interface conversion plate are connected with the input and output ends of the radio frequency plate through the high-speed connector;
the input and output ends of the baseband board group are connected with the input and output ends of the high-speed interface conversion board through the high-speed connector;
the input and output ends of the interface board are connected with the input and output ends of the baseband board group through a wire-to-board connector;
the upper computer is connected with the input and output ends of the interface board through a network port.
Preferably, the baseband board group comprises an LTE baseband board, a GSM/NB-IoT baseband board and a WCDMA/5G NR baseband board, and input and output ends of the LTE baseband board, the GSM/NB-IoT baseband board and the WCDMA/5G NR baseband board are connected with the high-speed interface conversion board and the interface board.
Preferably, each baseband board in the baseband board group includes:
the analog-to-digital converter ADC is connected with the output end of the digital low-pass filter and is used for converting the analog signal into a digital signal;
the logic gate array FPGA is connected with the input and output ends of the analog-to-digital converter ADC and is used for controlling the direct-pass or high-resistance state of the baseband board card, initially synchronizing, judging the validity of data and controlling the writing of valid data into the memory;
the digital signal processor DSP is connected with the logic gate array FPGA by the input/output pins and is used for controlling the radio frequency channel, controlling the data searching state and searching the same frequency multi-cell.
Preferably, the digital signal processor of the baseband board group is fixedly allocated with different IP addresses for identifying different test tasks issued by the upper computer.
Preferably, the bandwidth of the digital low-pass filter of the LTE baseband board is 10MHz, the bandwidth of the digital low-pass filter of the GSM/NB-IoT baseband board is 100kHz, and the bandwidth of the digital low-pass filter of the WCDMA/5G NR baseband board is 4MHz.
The method for realizing the blind search switching control of different communication modes applied to the full-mode sweep generator based on the system is mainly characterized by comprising the following steps of:
(1) Different IP addresses are fixedly allocated to the digital signal processors on the baseband board group and used for identifying different test tasks issued by the upper computer;
(2) The upper computer sends a blind search test task list of the baseband board group through the network port, and identifies a specific test task and specific test starting and ending frequency bands according to a control instruction sent by the upper computer;
(3) Initializing a baseband board group to be in a high-resistance state, and inquiring according to sequence after receiving an issued instruction;
(4) Starting a test task issued by an upper computer, and sequentially starting a baseband board of a corresponding system to work;
(5) The upper computer acquires cell measurement results of different communication systems and different frequency points at the current position from different baseband boards according to the issuing, displays measurement data of field intensity, signal-to-noise ratio, time delay and different antenna ports, and judges the network coverage quality of mobile communication in the current area according to the data.
Preferably, the step (4) specifically includes the following steps:
(4.1) inquiring the states of all baseband boards, and starting the normal work of the current baseband under the condition that the baseband board group is in a high-resistance state;
(4.2) configuring corresponding system receiving signal frequency bands, center frequency and frequency steps through a digital signal processor in the baseband board, and controlling an analog-to-digital converter to carry out digital sampling;
(4.3) controlling the automatic gain adjustment of the baseband board and obtaining the average value of the sampled digital baseband data of the analog-to-digital converter;
(4.4) carrying out initial synchronization in a logic gate array, judging the validity of the current data, if so, storing the sampling data for controlling the analog-to-digital converter into a memory by the logic gate array, and configuring a baseband board group to be in a high-resistance state; otherwise, continuing the step (4.5);
and (4.5) starting a test task issued by the next upper computer and starting the corresponding standard baseband board to work, and repeating the steps (4.1) to (4.4).
Preferably, the step (4.1) specifically includes the following steps:
(4.1.1) querying all baseband board states;
(4.1.2) judging whether the baseband board group is in a high-resistance state, if so, starting the normal work of the current baseband; otherwise, delay waiting is carried out until the baseband board group is in a high-resistance state, and starting working of the current baseband board is started;
and (4.1.3) judging whether the baseband board sets have the upper computer to issue a test task, and if so, setting the baseband board sets in a straight-through state.
Preferably, the step (4) further comprises the steps of:
(4.6) starting the next baseband board, carrying out the same-frequency multi-cell search in a digital signal processor of the baseband board, giving a data search state of 'in the data calculation process' before searching, reporting data to an upper computer for measuring result display after all cell searches are finished, and giving a data search state of 'data calculation finished';
(4.7) starting a test task, namely polling the same baseband board or the current test task to the baseband board which is started to work, detecting whether the data searching state is in the process of data calculation, if so, delaying until the data searching state is in the process of data calculation, and continuing the steps (4.2) to (4.6); otherwise, continuing the step (4.2) to the step (4.6).
Preferably, the configuration in the step (4.2) corresponds to a processing procedure of the standard received signal frequency band, the center frequency and the frequency step, and is defined according to user needs or is scanned according to the frequency band specified by the 3 GPP.
Preferably, the frequency step of the initial center frequency in the step (4.2) is default to 200KHz.
Preferably, the average value in the step (4.3) is 2 n -2 and 2 n -1, wherein n is a positive integer.
The system and the method for realizing the blind search switching control of different communication modes by using the full-mode sweep generator adopt one-channel radio frequency and three-channel baseband hardware architecture, classify according to different mode modulation bandwidths, flexibly schedule the frequency configuration of a radio frequency receiving channel by different baseband boards, furthest reduce the measuring interval by controlling the working states of the different baseband boards, realize the blind search quick switching of different communication modes and improve the utilization efficiency and the operation speed of the system. The method solves the problems that the data is missed in the traditional mode, the coverage condition of all the current communication networks cannot be completely reflected, and the mutual interference condition among different networks cannot be accurately displayed.
Drawings
Fig. 1 is a block diagram of a system for implementing blind search switching control of different communication modes, which is applied to a full-mode sweep generator.
Fig. 2 is a schematic diagram of a baseband board of the system for implementing blind search switching control of different communication modes, which is applied to a full-mode sweep generator.
Fig. 3 is a diagram showing the measurement result of an upper computer of the system and the method for realizing the blind search switching control of different communication modes, which are applied to the full-mode sweep generator.
Detailed Description
In order to more clearly describe the technical contents of the present invention, a further description will be made below in connection with specific embodiments.
The system for realizing blind search switching control of different communication modes by using the full-mode sweep generator comprises the following components:
the input end of the radio frequency board is connected with the RF antenna through an SMA cable;
the input and output ends of the high-speed interface conversion plate are connected with the input and output ends of the radio frequency plate through the high-speed connector;
the input and output ends of the baseband board group are connected with the input and output ends of the high-speed interface conversion board through the high-speed connector;
the input and output ends of the interface board are connected with the input and output ends of the baseband board group through a wire-to-board connector;
the upper computer is connected with the input and output ends of the interface board through a network port.
As a preferred embodiment of the invention, the baseband board group comprises an LTE baseband board, a GSM/NB-IoT baseband board and a WCDMA/5G NR baseband board, and the input and output ends of the LTE baseband board, the GSM/NB-IoT baseband board and the WCDMA/5G NR baseband board are connected with a high-speed interface conversion board and an interface board.
As a preferred embodiment of the present invention, each of the baseband board groups includes:
the analog-to-digital converter ADC is connected with the output end of the digital low-pass filter and is used for converting the analog signal into a digital signal;
the logic gate array FPGA is connected with the input and output ends of the analog-to-digital converter ADC and is used for controlling the direct-pass or high-resistance state of the baseband board card, initially synchronizing, judging the validity of data and controlling the writing of valid data into the memory;
the digital signal processor DSP is connected with the logic gate array FPGA by the input/output pins and is used for controlling the radio frequency channel, controlling the data searching state and searching the same frequency multi-cell.
As the preferred implementation mode of the invention, the digital signal processor of the baseband board group is fixedly allocated with different IP addresses for identifying different test tasks issued by the upper computer.
As a preferred embodiment of the invention, the bandwidth of the digital low-pass filter of the LTE baseband board is 10MHz, the bandwidth of the digital low-pass filter of the GSM/NB-IoT baseband board is 100kHz, and the bandwidth of the digital low-pass filter of the WCDMA/5G NR baseband board is 4MHz.
The method for realizing the blind search switching control of different communication modes applied to the full-mode sweep generator based on the system comprises the following steps:
(1) Different IP addresses are fixedly allocated to the digital signal processors on the baseband board group and used for identifying different test tasks issued by the upper computer;
(2) The upper computer sends a blind search test task list of the baseband board group through the network port, and identifies a specific test task and specific test starting and ending frequency bands according to a control instruction sent by the upper computer;
(3) Initializing a baseband board group to be in a high-resistance state, and inquiring according to sequence after receiving an issued instruction;
(4) Starting a test task issued by an upper computer, and sequentially starting a baseband board of a corresponding system to work;
(4.1) inquiring the states of all baseband boards, and starting the normal work of the current baseband under the condition that the baseband board group is in a high-resistance state;
(4.1.1) querying all baseband board states;
(4.1.2) judging whether the baseband board group is in a high-resistance state, if so, starting the normal work of the current baseband; otherwise, delay waiting is carried out until the baseband board group is in a high-resistance state, and starting working of the current baseband board is started;
(4.1.3) judging whether the baseband board group has an upper computer to issue a test task, if so, the baseband board group is in a straight-through state;
(4.2) configuring corresponding system receiving signal frequency bands, center frequency and frequency steps through a digital signal processor in the baseband board, and controlling an analog-to-digital converter to carry out digital sampling;
(4.3) controlling the automatic gain adjustment of the baseband board and obtaining the average value of the sampled digital baseband data of the analog-to-digital converter;
(4.4) carrying out initial synchronization in a logic gate array, judging the validity of the current data, if so, storing the sampling data for controlling the analog-to-digital converter into a memory by the logic gate array, and configuring a baseband board group to be in a high-resistance state; otherwise, continuing the step (4.5);
(4.5) starting a test task issued by the next upper computer and starting the corresponding standard baseband board to work, and repeating the steps (4.1) to (4.4);
(4.6) starting the next baseband board, carrying out the same-frequency multi-cell search in a digital signal processor of the baseband board, giving a data search state of 'in the data calculation process' before searching, reporting data to an upper computer for measuring result display after all cell searches are finished, and giving a data search state of 'data calculation finished';
(4.7) starting a test task, namely polling the same baseband board or the current test task to the baseband board which is started to work, detecting whether the data searching state is in the process of data calculation, if so, delaying until the data searching state is in the process of data calculation, and continuing the steps (4.2) to (4.6); otherwise, continuing the steps (4.2) to (4.6);
(5) The upper computer acquires cell measurement results of different communication systems and different frequency points at the current position from different baseband boards according to the issuing, displays measurement data of field intensity, signal-to-noise ratio, time delay and different antenna ports, and judges the network coverage quality of mobile communication in the current area according to the data.
As a preferred embodiment of the present invention, the configuration in the step (4.2) corresponds to a processing procedure of the standard received signal frequency band, the center frequency and the frequency step, and is defined according to a user's need, or is configured to scan according to a frequency band specified by the 3 GPP.
As a preferred embodiment of the present invention, the frequency step of the initial center frequency in step (4.2) is default to 200KHz.
As a preferred embodiment of the present invention, the average value in the step (4.3) is 2 n -2 and 2 n -1, wherein n is a positive integer.
In the specific embodiment of the invention, as shown in fig. 1, the RF antenna is connected with the input end of the radio frequency board module through an SMA cable; the input and output ends of the radio frequency board A1 are connected with the input and output ends of the high-speed interface conversion board A2 through a high-speed connector; the input and output ends of the high-speed interface conversion board A2 are respectively connected with the input and output ends of the LTE baseband board B0, the GSM/NB-IoT baseband board B1 and the WCDMA/5G NR baseband board B2 through high-speed connectors; the input and output ends of the LTE baseband board B0, the GSM/NB-IoT baseband board B1 and the WCDMA/5G NR baseband board B2 are connected with the input and output ends of the interface board A3 through wire-to-board connectors; the input and output ends of the interface board A3 are connected with the upper computer through network ports.
LTE baseband board B0, GSM/NB-IoT baseband board B1, and WCDMA/5G NR baseband board B2, including a/D, DSP and FPGA, where a/D is responsible for converting analog signals to digital signals; the FPGA is responsible for controlling the direct connection or high-resistance state of the baseband board card, initially synchronizing, judging the validity of data and controlling writing of valid data into the DDR; the DSP is responsible for radio frequency channel control, data search state control and same-frequency multi-cell search.
As shown in fig. 2, in LTE baseband board B0, GSM/NB-IoT baseband board B1, and WCDMA/5G NR baseband board B2, the digital low-pass filter output is connected to the I, Q input of the ADC; the input and output ends of the ADC are connected with the FPGA; the input/output pins of the FPGA are connected with the input/output pins of the DSP; the input/output pins of the DSP are connected with the input/output pins of the DDR and the Ethernet.
The bandwidth of the digital low-pass filter of the LTE baseband board B0 is 10MHz, the bandwidth of the digital low-pass filter of the GSM/NB-IoT baseband board B1 is 100kHz, and the bandwidth of the digital low-pass filter of the WCDMA/5G NR baseband board B2 is 4MHz, so that the corresponding bandwidth filters are configured according to different bandwidths to ensure the suppression of out-of-band interference signals.
The invention also discloses a full-system sweep generator communication system blind search switching method. The invention adopts one-path radio frequency and three-path baseband hardware architecture, classifies according to different standard modulation bandwidths, and flexibly schedules the frequency configuration of the radio frequency receiving channel through different baseband boards, thereby realizing the blind search quick switching of different communication standards and improving the utilization efficiency and the operation speed of the system.
1) Different IP addresses are fixedly allocated to DSPs on an LTE baseband board B0, a GSM/NB-IoT baseband board B1 and a WCDMA/5G NR baseband board B2 and are used for identifying different test tasks issued by an upper computer;
2) The upper computer issues one or more blind search test task lists in LTE, GSM, NB-IoT, WCDMA and 5G NR through the internet access. The DSP on different baseband boards recognizes specific test tasks and specific test starting and ending frequency bands according to control instructions issued by the upper computer;
3) Initializing all baseband boards to be in a high-resistance state, and inquiring according to the sequence of B0 … … Bn (n is less than or equal to 2) after receiving an instruction issued by an upper computer;
4) And inquiring the states of all the baseband boards, normally starting the normal work of the current baseband when the states of all the baseband boards are 1 (high-resistance state), otherwise, carrying out delay waiting until the states of all the baseband boards are 1 (high-resistance state), and starting the work of the current baseband boards. If the Bn baseband board has an upper computer to issue a test task, the Bn is configured to be in a straight-through state;
5) Configuring an initial center frequency Fnm of a corresponding standard receiving signal frequency band through a DSP (digital signal processor) in a baseband board Bn, configuring a default frequency step to be 200KHz, and then controlling an A/D to carry out digital sampling;
6) Controlling AGC (automatic gain) adjustment on Bn baseband board, and obtaining average value of A/D (analog-to-digital converter) sampling digital baseband data to make average value be 2 n -2 and 2 n -1, in order to guarantee a better correlation of the data;
7) Initial synchronization is carried out in an FPGA (logic gate array), the validity of current data is judged, if the data is valid, the FPGA stores control A/D sampling data into a DDR (storage), and a Bn baseband board is configured to be in a high-resistance state;
8) Starting a testing task issued by the next upper computer and starting the corresponding standard baseband board to work, and repeating the steps 4) to 7);
9) When the next baseband board is started, the DSP of the Bn baseband board performs the same-frequency multi-cell search, the data searching state is given as T0 (in the data calculation process) before searching, the data is reported to the upper computer for displaying the measurement result after the searching of all cells is finished, and the data searching state is given as T1 (the data calculation is finished) for judging the state of the Bn baseband board next time;
10 If the starting test task is in the same baseband board or the current test task polls the baseband board which is already started, whether the data searching state is T1 or not is detected, if the data searching state is T0, the step 5) to the step 9) can be carried out when waiting until the data searching state is T0;
11 The upper computer obtains the cell measurement results of different communication modes and different frequency points at the current position according to the issuing from different baseband board cards, displays the measurement data of field intensity, signal to noise ratio, time delay and different antenna ports, and judges the network coverage quality of the mobile communication in the current area according to the data.
In step 5), the frequency band, center frequency and frequency step of the corresponding system receiving signal can be defined according to the user's needs, and the configuration scanning can be performed according to the frequency band specified by 3 GPP.
Fig. 3 is a diagram showing reporting of measurement results and measurement parameters of different communication systems in an upper computer.
The system and the method for realizing the blind search switching control of different communication modes by using the full-mode sweep generator adopt one-channel radio frequency and three-channel baseband hardware architecture, classify according to different mode modulation bandwidths, flexibly schedule the frequency configuration of a radio frequency receiving channel by different baseband boards, furthest reduce the measuring interval by controlling the working states of the different baseband boards, realize the blind search quick switching of different communication modes and improve the utilization efficiency and the operation speed of the system. The method solves the problems that the data is missed in the traditional mode, the coverage condition of all the current communication networks cannot be completely reflected, and the mutual interference condition among different networks cannot be accurately displayed.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (10)
1. The system for realizing blind search switching control of different communication modes applied to the full-mode sweep generator is characterized by comprising the following components:
the input end of the radio frequency board is connected with the RF antenna through an SMA cable;
the input and output ends of the high-speed interface conversion plate are connected with the input and output ends of the radio frequency plate through the high-speed connector;
the input and output ends of the baseband board group are connected with the input and output ends of the high-speed interface conversion board through the high-speed connector;
the input and output ends of the interface board are connected with the input and output ends of the baseband board group through a wire-to-board connector;
the upper computer is connected with the input and output ends of the interface board through a network port;
the baseband board group comprises an LTE baseband board, a GSM/NB-IoT baseband board and a WCDMA/5G NR baseband board, and input and output ends of the LTE baseband board, the GSM/NB-IoT baseband board and the WCDMA/5G NR baseband board are connected with a high-speed interface conversion board and an interface board;
each baseband board in the baseband board group comprises:
the analog-to-digital converter ADC is connected with the output end of the digital low-pass filter and is used for converting the analog signal into a digital signal;
the logic gate array FPGA is connected with the input and output ends of the analog-to-digital converter ADC and is used for controlling the direct-pass or high-resistance state of the baseband board card, initially synchronizing, judging the validity of data and controlling the writing of valid data into the memory;
the digital signal processor DSP is connected with the logic gate array FPGA by an input/output pin and is used for controlling a radio frequency channel, controlling a data searching state and searching multiple cells in the same frequency;
the blind search switching control of different communication modes can be realized through the system, and the method specifically comprises the following steps:
(1) Different IP addresses are fixedly allocated to the digital signal processors on the baseband board group and used for identifying different test tasks issued by the upper computer;
(2) The upper computer sends a blind search test task list of the baseband board group through the network port, and identifies a specific test task and specific test starting and ending frequency bands according to a control instruction sent by the upper computer;
(3) Initializing a baseband board group to be in a high-resistance state, and inquiring according to sequence after receiving an issued instruction;
(4) Starting a test task issued by an upper computer, and sequentially starting a baseband board of a corresponding system to work;
(5) The upper computer acquires cell measurement results of different communication systems and different frequency points at the current position from different baseband boards according to the issuing, displays measurement data of field intensity, signal-to-noise ratio, time delay and different antenna ports, and judges the network coverage quality of mobile communication in the current area according to the data.
2. The system for realizing the blind search switching control of different communication modes for the full-mode sweep generator according to claim 1, wherein the digital signal processor of the baseband board group is fixedly allocated with different IP addresses for identifying different test tasks issued by an upper computer.
3. The system for implementing blind search switching control of different communication modes for an all-mode scanner according to claim 1, wherein the bandwidth of the digital low-pass filter of the LTE baseband board is 10MHz, the bandwidth of the digital low-pass filter of the gsm/NB-IoT baseband board is 100khz, and the bandwidth of the digital low-pass filter of the wcdma/5G NR baseband board is 4MHz.
4. A method for realizing blind search switching control of different communication modes applied to a full-mode sweep generator based on a system for realizing blind search switching control of different communication modes applied to the full-mode sweep generator, the system comprising:
the input end of the radio frequency board is connected with the RF antenna through an SMA cable;
the input and output ends of the high-speed interface conversion plate are connected with the input and output ends of the radio frequency plate through the high-speed connector;
the input and output ends of the baseband board group are connected with the input and output ends of the high-speed interface conversion board through the high-speed connector;
the input and output ends of the interface board are connected with the input and output ends of the baseband board group through a wire-to-board connector;
the upper computer is connected with the input and output ends of the interface board through a network port;
the baseband board group comprises an LTE baseband board, a GSM/NB-IoT baseband board and a WCDMA/5G NR baseband board, and input and output ends of the LTE baseband board, the GSM/NB-IoT baseband board and the WCDMA/5G NR baseband board are connected with a high-speed interface conversion board and an interface board;
each baseband board in the baseband board group comprises:
the analog-to-digital converter ADC is connected with the output end of the digital low-pass filter and is used for converting the analog signal into a digital signal;
the logic gate array FPGA is connected with the input and output ends of the analog-to-digital converter ADC and is used for controlling the direct-pass or high-resistance state of the baseband board card, initially synchronizing, judging the validity of data and controlling the writing of valid data into the memory;
the digital signal processor DSP is connected with the logic gate array FPGA by an input/output pin and is used for controlling a radio frequency channel, controlling a data searching state and searching multiple cells in the same frequency;
the method is characterized by comprising the following steps:
(1) Different IP addresses are fixedly allocated to the digital signal processors on the baseband board group and used for identifying different test tasks issued by the upper computer;
(2) The upper computer sends a blind search test task list of the baseband board group through the network port, and identifies a specific test task and specific test starting and ending frequency bands according to a control instruction sent by the upper computer;
(3) Initializing a baseband board group to be in a high-resistance state, and inquiring according to sequence after receiving an issued instruction;
(4) Starting a test task issued by an upper computer, and sequentially starting a baseband board of a corresponding system to work;
(5) The upper computer acquires cell measurement results of different communication systems and different frequency points at the current position from different baseband boards according to the issuing, displays measurement data of field intensity, signal-to-noise ratio, time delay and different antenna ports, and judges the network coverage quality of mobile communication in the current area according to the data.
5. The method for implementing blind search switching control of different communication modes applied to an all-mode sweep generator according to claim 4, wherein the step (4) specifically comprises the following steps:
(4.1) inquiring the states of all baseband boards, and starting the normal work of the current baseband under the condition that the baseband board group is in a high-resistance state;
(4.2) configuring corresponding system receiving signal frequency bands, center frequency and frequency steps through a digital signal processor in the baseband board, and controlling an analog-to-digital converter to carry out digital sampling;
(4.3) controlling the automatic gain adjustment of the baseband board and obtaining the average value of the sampled digital baseband data of the analog-to-digital converter;
(4.4) carrying out initial synchronization in a logic gate array, judging the validity of the current data, if so, storing the sampling data for controlling the analog-to-digital converter into a memory by the logic gate array, and configuring a baseband board group to be in a high-resistance state; otherwise, continuing the step (4.5);
and (4.5) starting a test task issued by the next upper computer and starting the corresponding standard baseband board to work, and repeating the steps (4.1) to (4.4).
6. The method for implementing blind search switching control of different communication modes applied to an all-mode sweep generator according to claim 5, wherein the step (4.1) specifically comprises the following steps:
(4.1.1) querying all baseband board states;
(4.1.2) judging whether the baseband board group is in a high-resistance state, if so, starting the normal work of the current baseband; otherwise, delay waiting is carried out until the baseband board group is in a high-resistance state, and starting working of the current baseband board is started;
and (4.1.3) judging whether the baseband board sets have the upper computer to issue a test task, and if so, setting the baseband board sets in a straight-through state.
7. The method for implementing blind search switching control of different communication modes applied to an all-mode scanner according to claim 5, wherein said step (4) further comprises the steps of:
(4.6) starting the next baseband board, carrying out the same-frequency multi-cell search in a digital signal processor of the baseband board, giving a data search state of 'in the data calculation process' before searching, reporting data to an upper computer for measuring result display after all cell searches are finished, and giving a data search state of 'data calculation finished';
(4.7) starting a test task, namely polling the same baseband board or the current test task to the baseband board which is started to work, detecting whether the data searching state is in the process of data calculation, if so, delaying until the data searching state is in the process of data calculation, and continuing the steps (4.2) to (4.6); otherwise, continuing the step (4.2) to the step (4.6).
8. The method for implementing blind search switching control of different communication modes applied to an all-mode scanner according to claim 5, wherein the configuration in step (4.2) corresponds to the processing procedure of the frequency band, center frequency and frequency step of the system reception signal, and the configuration scanning is performed according to user requirements or according to the frequency band specified by 3 GPP.
9. The method for implementing blind search switching control of different communication modes applied to an all-mode scanner according to claim 5, wherein the frequency step of the initial center frequency in the step (4.2) is configured to be 200KHz by default.
10. The method for implementing blind search switching control of different communication modes applied to full-mode sweep generator according to claim 5, wherein said average value in step (4.3) is betweenAnd->Wherein n is a positive integer.
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