CN118101121A - Signal shielding method, apparatus, device, storage medium, and program product - Google Patents
Signal shielding method, apparatus, device, storage medium, and program product Download PDFInfo
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Abstract
The invention provides a signal shielding method, a device, equipment, a storage medium and a program product, which relate to the technical field of communication, wherein the signal shielding method comprises the following steps: acquiring a first signal-to-interference-plus-noise ratio SINR when a terminal enters a Radio Resource Control (RRC) idle state; receiving a synchronous signal block SSB, and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR; and transmitting the first interference signal to the SSB according to the first transmission parameter. The first transmission parameter calculated by the scheme of the invention has lower power consumption, is more environment-friendly, can be adjusted, and transmits the first interference signal to the SSB according to the first transmission parameter so as to realize signal interference.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal shielding method, apparatus, device, storage medium, and program product.
Background
In recent years, with the rapid development of mobile communication technology and the acceleration of information-based social processes, people enjoy convenience, rapidness, accuracy and individuation brought by modern communication, and meanwhile, the information safety hidden danger is faced, and greater challenges are also presented for information safety protection of confidential places such as examination rooms, conference rooms and the like.
With the rapid development and widespread deployment of fifth-generation mobile communication technology (5th Generation Mobile Communication Technology,5G), the advantages of high data transmission rate and low delay are being adopted by various industries. In order to achieve a higher transmission rate, the maximum bandwidth of a New air interface (NR) is increased from 20MHz of long term evolution (Long Term Evolution, LTE) of a fourth generation mobile communication system to 400MHz, and even the mainstream commercial 5G frequency band needs to occupy a bandwidth of 100MHz, and the bandwidth of 100MHz results in a higher bandwidth of an interference signal required to be transmitted by a shielding device; secondly, one of the core requirements of 5G NR on the protocol design is a high level of security and anti-jamming capability, in particular resilience to jamming attacks. For a system with high anti-interference capability and large bandwidth like 5G, the signal shielding device based on the traditional method has high power consumption, strong radiation and limited interference distance, so that the use place is narrowed, the interference power cannot be dynamically adjusted according to the place, and finally, the interference effect is ambiguous, and whether interference exists or not cannot be accurately judged.
Disclosure of Invention
The invention aims to provide a signal shielding method, a device, equipment, a storage medium and a program product, which are used for solving the problems of high interference power consumption, environmental protection and non-adjustable interference power of the existing signal shielding method.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
the embodiment of the invention provides a signal shielding method, which comprises the following steps:
acquiring a first signal-to-interference-plus-noise ratio SINR when a terminal enters a Radio Resource Control (RRC) idle state;
Receiving a synchronous signal block SSB, and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
And transmitting the first interference signal to the SSB according to the first transmission parameter.
Optionally, the first transmission parameter includes a transmission power of the first interference signal;
According to the SSB and/or the first SINR, a first transmission parameter of a first interfering signal is obtained, including:
detecting the SSB to obtain reference signal receiving power SS-RSRP and a second SINR of the synchronous signal;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
Optionally, detecting the SSB to obtain a reference signal received power SS-RSRP and a second SINR of the synchronization signal includes:
detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB;
and obtaining the SS-RSRP and the second SINR according to the frame head position.
Optionally, obtaining the transmission power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR includes:
Obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB;
obtaining free space loss power according to the interference range;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power.
Optionally, the first transmission parameter includes a frequency domain location and a time domain location at which the first interference signal is transmitted;
According to the SSB and/or the first SINR, a first transmission parameter of a first interfering signal is obtained, including:
detecting PSS and SSS in the SSB to obtain the frame head position of the SSB;
and obtaining the frequency domain position and the time domain position of the first interference signal according to the frame head position.
Optionally, the method further comprises:
decoding a Physical Broadcast Channel (PBCH) in the SSB to obtain a second transmission parameter of a second interference signal;
And transmitting the second interference signal to a physical random access channel PRACH according to the second transmission parameter.
The second transmission parameters comprise a frequency domain position for transmitting the second interference signal, a time domain position for transmitting the second interference signal and a transmission power of the second interference signal;
Decoding the physical broadcast channel PBCH in the SSB to obtain a second transmission parameter of a second interference signal, including:
Decoding the PBCH to obtain a master information block MIB;
decoding the PDCCH according to the time domain position and the frequency domain position of the physical downlink control channel PDCCH indicated by the MIB to obtain downlink control information DCI;
Decoding a Physical Downlink Shared Channel (PDSCH) according to the DCI to obtain a System Information Block (SIB);
And obtaining the frequency domain position for transmitting the second interference signal, the time domain position for transmitting the second interference signal and the transmitting power of the second interference signal according to the SIB.
The embodiment of the invention also provides a signal shielding device, which comprises:
the first acquisition module is used for acquiring a first signal-to-interference-plus-noise ratio SINR when the terminal enters a Radio Resource Control (RRC) idle state;
the first processing module is used for receiving the synchronous signal block SSB and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
And the first sending module is used for sending a first interference signal to the SSB according to the first sending parameter.
The embodiment of the invention also provides a signal screen device, which comprises: a processor and a transceiver;
the processor is configured to obtain a first signal-to-interference-plus-noise ratio SINR when the terminal enters a radio resource control RRC idle state;
the transceiver is used for receiving the synchronous signal block SSB;
the processor is further configured to obtain a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
The transceiver is further configured to send the first interference signal to the SSB according to the first transmission parameter.
The embodiment of the invention also provides signal shielding equipment, which comprises: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the signal masking method as claimed in any one of the preceding claims.
The embodiment of the invention also provides a readable storage medium, wherein a program is stored on the readable storage medium, and the program is executed by a processor to implement the steps in the signal shielding method according to any one of the above.
Embodiments of the present invention also provide a computer program product comprising computer instructions which, when executed by a processor, implement the steps in the signal masking method as claimed in any one of the preceding claims.
At least one of the above technical solutions of the invention has the following beneficial effects:
According to the signal shielding method provided by the scheme of the invention, the first SINR of the terminal entering the RRC idle state is obtained, the SSB is received, the first transmission parameter of the first interference signal is obtained according to the SSB and/or the first SINR, the first transmission parameter calculated according to the method has lower power consumption and is more environment-friendly, the adjustment can be carried out, the first interference signal is sent to the SSB according to the first transmission parameter, and the signal interference is realized.
Drawings
Fig. 1 is a flowchart of a signal shielding method according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a signal interference device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection between a computer device and a radio frequency board card according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a signal shielding device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signal shielding device according to an embodiment of the present invention;
Fig. 6 is a second schematic structural diagram of a signal shielding device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In order to solve the problems of high interference power consumption, environmental protection and non-adjustable interference power of the existing signal shielding method, the embodiment of the invention provides a signal shielding method, a device, equipment, a storage medium and a program product.
As shown in fig. 1, an embodiment of the present invention provides a signal shielding method, including:
Step 101: a first signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) is obtained when the terminal enters a radio resource control (Radio Resource Control, RRC) idle state.
In this step, the radio link is established by simulation, and the out-of-step threshold value that triggers the radio link failure and causes the RRC reestablishment is confirmed.
The specific simulation flow is as follows:
The terminal performs quality assessment on a wireless link between base stations connected with the terminal by monitoring a synchronization signal block (Synchronization Signal Block, SSB) or a channel state Information reference signal (CHANNEL STATE Information REFERENCE SIGNAL, CSI-RS), and indicates to a higher layer that the terminal is currently in a synchronization state or an out-of-synchronization state so as to ensure continuity and stability of communication. According to the protocol, the out-of-step block error rate is 10%, and the definition channel of the out-of-step block error rate is a physical downlink control channel (Physical downlink control channel, PDCCH). That is, during the monitoring time of the terminal, when the SINR of the detected reference signal SSB or CSI-RS is too low, the terminal considers that the block error rate of the mapped PDCCH is too high, once the block error rate exceeds the threshold value by 10%, the step-out state is reported to the higher layer once, after triggering the step-out state for M times (M is a positive integer), the terminal starts a timer T310, during the starting time of T310, if no indication information of N (N is a positive integer) synchronous states is received, the terminal declares the radio link failure (Radio Link Failure, RLF) after the timer expires.
After the terminal declares RLF, the terminal will perform the radio link recovery work. In a practical scenario, the terminal stops any data transmission or reception over the source link and releases the source link, but maintains the source RRC configuration; if the handover failure is later declared in the target cell, the terminal selects a suitable cell and initiates RRC reestablishment; if a suitable cell is not found within a certain time after declaring handover failure, the rrc_idle state (i.e., RRC IDLE state) is entered.
According to the above principle, mapping the relation between SINR and PDCCH block error rate is performed, and the SINR corresponding to the PDCCH block error rate is determined in a simulation manner, wherein the SINR is called an out-of-step threshold, namely, the first SINR when the terminal enters an RRC) idle state is called the out-of-step threshold.
In this step, the moment when the terminal enters the RLF and rrc_idle states is simulated, so as to estimate the step-out threshold value when the terminal enters the step-out state, and the first SINR.
Step 102: and receiving a synchronous signal block SSB, and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR.
It should be noted that, the signal shielding method provided by the embodiment of the present invention is applied to a signal interference device, and a structural schematic diagram of the signal interference device is shown in fig. 2, where a core processing module in the signal interference device includes three modules, which are a signal acquisition module, a baseband processing module and a signal transmitting module, respectively. Specifically, when the device is built, the omnidirectional receiving antenna is connected with the radio frequency board card (not shown in fig. 2), the function of the signal acquisition module is completed, the downlink synchronous signal (NR base station signal) is received, the radio frequency board card is connected with the upper computer program through a universal serial bus 3.0 (Universal Serial Bus.0, USB 3.0) interface, the upper computer completes the function of the baseband processing module, and finally, the omnidirectional receiving antenna is connected with the radio frequency board card through the omnidirectional transmitting antenna, the function of the signal transmitting module is completed, and the signal transmitting module is used for transmitting interference signals. In this step, after the above device is installed, the frequency point and the acquisition gain of the target NR cell synchronization signal block SSB are input in the upper computer software, the operation button is clicked, and the radio frequency sub-board (signal acquisition module) acquires the downlink synchronous in-phase quadrature (in-phase, quadrature, IQ) data at a sampling rate of 30.72M through the omni-directional receiving antenna, and transmits the data to the upper computer program. The upper computer program enters a downlink synchronization module to obtain a synchronization signal block SSB according to the IQ data.
The baseband processing module functions to decode and calculate the SSB, and obtain a first transmission parameter of a first interference signal according to the SSB and/or the first SINR, where the first transmission parameter includes at least one of the following:
The transmit power of the first interfering signal;
transmitting a time domain position of a first interference signal;
The frequency domain location of the first interfering signal is transmitted.
The device can obtain the downlink synchronous signal at any position in the cell by utilizing the characteristic that the omni-directional receiving antenna can receive signals in all directions.
Step 103: and transmitting the first interference signal to the SSB according to the first transmission parameter.
After the steps are carried out, the first transmission parameters are determined, and then, a first interference signal is sent to the SSB according to the first transmission parameters, so that signal interference is realized. The device can complete the function of omnibearing range interference at any position in a cell by utilizing the characteristic that signals can be transmitted in all directions of an omnibearing transmitting antenna.
In an alternative embodiment, obtaining the first transmission parameter of the first interference signal according to the SSB and/or the first SINR includes:
And detecting the SSB to obtain reference signal receiving Power SS-RSRP and a second SINR of the synchronous signals, specifically, the baseband processing module firstly performs downlink Synchronization on the acquired signals, namely detecting a main synchronous signal (Primary Synchronisation Signal, PSS) and a secondary synchronous signal (Secondary Synchronisation Signal, SSS) in the SSB, and calculating the reference signal receiving quality (Synchronization SIGNAL REFERENCE SIGNAL RECEIVED Power, SS-RSRP) and the SINR (namely the second SINR) of the synchronous signals at the current position of the device by utilizing the characteristics of the SSB signals as standards for signal quality evaluation, namely calculating the SS-RSRP) and evaluating the current signal quality by using the characteristics of the SSB signals.
And obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
Further, detecting the SSB to obtain a reference signal received power SS-RSRP and a second SINR of the synchronization signal, including:
Detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB, specifically, entering a downlink synchronization module by an upper computer program, and performing PSS detection and SSS detection on the SSB obtained according to IQ data to obtain the frame head position;
and obtaining the SS-RSRP and the second SINR according to the frame head position, namely calculating the SS-RSRP and the second SINR according to the frame head position.
Further, obtaining the transmission power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR includes:
and obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB. Wherein the transmitting SSB is transmitted through an omni-directional transmitting antenna and the receiving SSB is received through an omni-directional receiving antenna.
Specifically, according to the transmitting power of the SSB, the frequency domain position of the SSB, and the receiving power of the SSB, an interference range is obtained, and an interference range of a first interference signal is obtained, where the specific formula is as follows:
PR(dBm)＝PT(dBm)-20lg(d_km)-20lg(frequency_mhz)-32.442
Where P T (dBm) represents the power of a transmission signal (transmission power of a transmission SSB), d_km represents the distance between an jammer (i.e., the apparatus shown in fig. 2) and a receiver (terminal), the distance is an interference range, frequency_mhz is an interference frequency point (frequency domain position of the SSB) in km, and P R (dBm) is the power of a reception signal (reception power of the SSB) in MHz.
And obtaining free space loss power according to the interference range, specifically, regulating d_km according to the interference range, and calculating the free space loss power.
And obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power. I.e. the signal power level at which the transmitting antenna transmits the first interfering signal is further determined. Specifically, a difference delta SINR between the second SINR and the first SINR is determined, and according to SS-RSRP and free space loss power, the transmission power tx_power of the first interference signal is obtained according to the following formula:
Tx_power=ss-rsrp+Δ SINR +free space lost power+preset margin.
In an alternative embodiment, obtaining the first transmission parameter of the first interference signal according to the SSB and/or the first SINR includes:
detecting PSS and SSS in the SSB to obtain the frame head position of the SSB;
And obtaining a frequency domain position and a time domain position of the first interference signal according to the frame head position, specifically, obtaining the frequency domain position of the first interference signal according to the frame head position, and obtaining the time domain position occupied by the first interference signal in each frame by looking up a table according to the frequency domain position.
Specifically, since the SSB is periodically transmitted, that is, once transmitted in 20ms, the transmission of the first interference signal only occupies 2ms, the time domain duty ratio of the first interference signal is 1/10, taking the current network as an example, the bandwidth of the SSB is 20RB, and the frequency domain duty ratio of the first interference signal is 20/273, so that the time-frequency resource is greatly saved.
Illustratively, the frame header position is obtained by decoding the SSB, that is, the starting position sample point x of 10ms, and the starting position and the SSB differ by 100 sample points, then the first interference signal will be transmitted at (x+100)/sample rate +n, where n is a set time in seconds.
For a terminal that has not established an RRC connection, due to high interference signal power, cell search may still be performed to access the cell, but once the RRC connection is established, since the current SINR value is a threshold for triggering a radio link failure, RRC reestablishment may be performed to other inter-frequency cells even after the access due to triggering a link failure.
It should be further noted that, to further save time-frequency resources, after a period of time has elapsed to interfere with the SSB signal, all end users in the area have left the cell, and at this time, the interfering object is switched to a Physical Random access channel (Physical Random ACCESS CHANNEL, PRACH), and the channel and period configuration of the PRACH results in less occupied time-frequency resources.
Thus, further, the method further comprises:
decoding a physical broadcast channel (Physical Broadcast Channel, PBCH) in the SSB to obtain a second transmission parameter of a second interference signal, wherein the second transmission parameter includes at least one of:
The transmit power of the second interfering signal;
Transmitting a time domain position of the second interference signal;
and transmitting the frequency domain position of the second interference signal.
And transmitting the second interference signal to a physical random access channel PRACH according to the second transmission parameter.
In an alternative embodiment, decoding the physical broadcast channel PBCH in the SSB to obtain the second transmission parameter of the second interference signal includes:
And decoding the PBCH to obtain a main information block (Master Information Block, MIB), specifically, entering a PBCH decoding unit immediately, wherein the method comprises at least one of the operations of extracting a reference signal, determining SSB sequence numbers, carrying out channel estimation and equalization, carrying out noise estimation, demodulating, carrying out secondary scrambling, carrying out rate matching demodulation, carrying out pole code decoding, carrying out CRC (cyclic redundancy check) decoding, carrying out primary scrambling decoding and the like, and obtaining MIB information.
Decoding the physical downlink control channel (Physical Downlink Control Channel, PDCCH) according to the time domain position and the frequency domain position of the PDCCH indicated by the MIB to obtain downlink control information DCI, specifically, entering a PDCCH decoding unit through the PDCCH time-frequency position indicated by the MIB information to decode the PDCCH to obtain downlink control information (Downlink Control Information, DCI), such as DCI1_0;
And decoding a physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) according to the DCI to obtain a system information block (System Information Block, SIB), for example, entering a PDSCH decoding unit to obtain SIB1 information according to PDSCH related information indicated by DCI1_0.
Specifically, SIB1 information provides a general configuration RACH-ConfigGereric of a random access channel. The structure of RACH-ConfigGereric is defined as follows:
Configuration information prach-RootSequenceIndex is also provided in SIB1 information to determine the available preamble configuration, and its structure is defined as follows:
According to the SIB, obtaining a frequency domain position for transmitting the second interference signal, a time domain position for transmitting the second interference signal and a transmitting power of the second interference signal, specifically, determining a bandwidth of the PRACH according to information provided by PRACH-RootSequenceIndex in the SIB, and obtaining a period configured by the PRACH and a time domain symbol position and duration according to a table look-up of the bandwidth and PRACH-ConfigurationIndex of the PRACH, that is, obtaining a time domain position and period for transmitting the second interference signal according to the bandwidth of the PRACH and the table look-up of PRACH-ConfigurationIndex, wherein the PRACH-ConfigurationIndex indicates corresponding relations between bandwidths and frequency domain positions of different PRACH, and then determining the frequency domain position for transmitting the second interference signal according to the time domain position of the second interference signal and table look-up of msg1-FrequencyStart, wherein msg1-FrequencyStart indicates corresponding relations between different time domain positions and frequency domain positions. Determining the maximum transmitting power of the terminal preamble according to the available preamble configuration in the SIB1 information, and then obtaining the transmitting power Tx_power of the second interference signal according to the maximum transmitting power and a preset allowance, wherein the specific formula is as follows:
tx_power=maximum transmit power of terminal preamble+preset margin. The method comprises the steps of sequentially obtaining MIB information through a PBCH decoding unit, obtaining DCI information through a PDCCH decoding unit, obtaining SIB1 information through a PDSCH decoding unit, determining the time-frequency position and period of a PRACH channel as the time-frequency position and period for transmitting a second interference signal according to relevant parameters provided by the SIB1 information, and determining the transmitting power of the second interference signal.
In summary, the upper computer completes the baseband processing function, completes the decoding of the received signal, calculates the signal quality of the current position, calculates the period and time-frequency position of the uplink random access channel, calculates the power of the transmitted interference according to the interference range required, the signal quality of the current position and the space loss, determines the transmitted frequency point and the time length, and completes the function of the signal transmitting module.
The embodiment of the invention also provides a computer device for realizing the functions of the upper computer, and particularly as shown in fig. 3, the computer device is connected with a radio frequency board card, and the radio frequency board card comprises a processor, a radio frequency transceiver module, an input/output (I/O) interface and a timer module, wherein the radio frequency transceiver module, the input/output (I/O) interface and the timer module are respectively connected with the processor. The radio frequency transceiver module is also interactively connected with an antenna (the antenna is an omni-directional antenna), the computer equipment comprises a processor, an operating system connected with the processor, a baseband processing module, an I/O interface and a display, the functions of the operating system and the baseband processing module are realized through a computer program, and the computer program is stored through a nonvolatile storage medium. The I/O interface of the computer equipment is connected and interacted with the I/O interface of the radio frequency board card.
The method for jointly calculating the interference transmitting power according to the relevant parameters such as the SINR out-of-step threshold, free space loss, SS-RSRP and the like corresponding to the radio link failure can reasonably control the transmitting power according to the interference range and the signal quality condition of the area, has lower power consumption and is more environment-friendly. When the interference is carried out, the interference method firstly forces all resident cell users in the interference range to report out of step frequently by transmitting the interference to the synchronous signal SSB until the radio link fails and finally leaves the cell, then switches the interference object to be a PRACH channel, and the occupied time-frequency resource caused by the PRACH channel characteristic is usually greatly less than the synchronous block SSB, thereby further saving the power consumption. The method of firstly interfering the SSB synchronous block and then switching the interference object as the PRACH ensures that the terminal which establishes the RRC connection or does not establish the RRC connection leaves the cell, and further saving of the interference time-frequency resource is realized by switching the interference object. The method for calculating the transmitting power of the interference signal is controllable, and power loss caused by transmitting redundant interference power is avoided.
The interference signal adopted by the embodiment of the invention is Gaussian white noise, and the mode of reconstructing the received signal is not adopted to transmit as the interference signal, so that the requirement on the real-time information processing capability of the interference equipment is reduced.
As shown in fig. 4, an embodiment of the present invention further provides a signal shielding device, including:
A first obtaining module 401, configured to obtain a first signal-to-interference-plus-noise ratio SINR when the terminal enters a radio resource control RRC idle state;
A first processing module 402, configured to receive a synchronization signal block SSB, and obtain a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
A first sending module 403, configured to send a first interference signal to the SSB according to the first sending parameter.
Optionally, the first transmission parameter includes a transmission power of the first interference signal;
The first processing module 402 includes:
the first processing unit is used for detecting the SSB to obtain reference signal receiving power SS-RSRP and second SINR of the synchronous signal;
and the second processing unit is used for obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
Optionally, the first processing unit is specifically configured to:
detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB;
and obtaining the SS-RSRP and the second SINR according to the frame head position.
Optionally, the second processing unit is specifically configured to:
Obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB;
obtaining free space loss power according to the interference range;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power.
Optionally, the first transmission parameter includes a frequency domain location and a time domain location at which the first interference signal is transmitted;
The first processing module 402 includes:
The third processing unit is used for detecting the PSS and the SSS in the SSB to obtain the frame head position of the SSB;
And the fourth processing unit is used for obtaining the frequency domain position and the time domain position of the first interference signal according to the frame head position.
Optionally, the apparatus further comprises:
The second processing module is used for decoding a Physical Broadcast Channel (PBCH) in the SSB to obtain a second transmitting parameter of a second interference signal;
and the second sending module is used for sending the second interference signal to the physical random access channel PRACH according to the second sending parameter.
Optionally, the second transmission parameter includes a frequency domain position at which the second interference signal is transmitted, a time domain position at which the second interference signal is transmitted, and a transmission power of the second interference signal;
the second processing module includes:
a fifth processing unit, configured to decode the PBCH to obtain a master information block MIB;
A sixth processing unit, configured to decode the PDCCH according to the time domain position and the frequency domain position of the physical downlink control channel PDCCH indicated by the MIB, to obtain downlink control information DCI;
a seventh processing unit, configured to decode a physical downlink shared channel PDSCH according to the DCI to obtain a system information block SIB;
And an eighth processing unit, configured to obtain, according to the SIB, a frequency domain position at which the second interference signal is transmitted, a time domain position at which the second interference signal is transmitted, and a transmit power of the second interference signal.
It should be noted that, the signal shielding device according to the embodiment of the present invention is a device capable of executing the signal shielding method, and all embodiments of the signal shielding method described above are applicable to the device, and the same or similar technical effects can be achieved.
As shown in fig. 5, an embodiment of the present invention further provides a signal shielding device, including: a processor 501 and a transceiver 502;
the processor 501 is configured to obtain a first signal-to-interference-plus-noise ratio SINR when the terminal enters a radio resource control RRC idle state;
the transceiver 502 is configured to receive a synchronization signal block SSB;
The processor 501 is further configured to obtain a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
The transceiver 502 is further configured to send the first interference signal to the SSB according to the first transmission parameter.
Optionally, the first transmission parameter includes a transmission power of the first interference signal;
the processor 501 is specifically configured to:
detecting the SSB to obtain reference signal receiving power SS-RSRP and a second SINR of the synchronous signal;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
Optionally, the processor 501 is specifically configured to:
detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB;
and obtaining the SS-RSRP and the second SINR according to the frame head position.
Optionally, the processor 501 is specifically configured to:
Obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB;
obtaining free space loss power according to the interference range;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power.
Optionally, the first transmission parameter includes a frequency domain location and a time domain location at which the first interference signal is transmitted;
the processor 501 is specifically configured to:
detecting PSS and SSS in the SSB to obtain the frame head position of the SSB;
and obtaining the frequency domain position and the time domain position of the first interference signal according to the frame head position.
Optionally, the processor 501 is further configured to decode a physical broadcast channel PBCH in the SSB to obtain a second transmission parameter of a second interference signal;
the transceiver 502 is further configured to send the second interference signal to a physical random access channel PRACH according to the second transmission parameter.
Optionally, the second transmission parameter includes a frequency domain position at which the second interference signal is transmitted, a time domain position at which the second interference signal is transmitted, and a transmission power of the second interference signal;
the processor 501 is specifically configured to:
Decoding the PBCH to obtain a master information block MIB;
decoding the PDCCH according to the time domain position and the frequency domain position of the physical downlink control channel PDCCH indicated by the MIB to obtain downlink control information DCI;
Decoding a Physical Downlink Shared Channel (PDSCH) according to the DCI to obtain a System Information Block (SIB);
And obtaining the frequency domain position for transmitting the second interference signal, the time domain position for transmitting the second interference signal and the transmitting power of the second interference signal according to the SIB.
It should be noted that, the signal shielding device according to the embodiment of the present invention is a device capable of executing the signal shielding method, and all embodiments of the signal shielding method described above are applicable to the signal shielding device, and the same or similar technical effects can be achieved.
As shown in fig. 6, an embodiment of the present invention further provides a signal shielding device, including: a processor 601; and a memory 603 connected to the processor 601 through a bus interface 602, the memory 603 storing programs and data used by the processor 601 when executing operations, the processor 601 calling and executing the programs and data stored in the memory 603.
Wherein the transceiver 604 is connected to the bus interface 602 for receiving and transmitting data under the control of the processor 601, in particular, the processor 601 is configured to read the program in the memory 603, and the processor 601 performs the following procedures:
acquiring a first signal-to-interference-plus-noise ratio SINR when a terminal enters a Radio Resource Control (RRC) idle state;
The transceiver 604 performs the following process:
receiving a synchronization signal block SSB;
The processor 601 also performs the following process:
according to the SSB and/or the first SINR, a first transmission parameter of a first interference signal is obtained;
the transceiver 604 also performs the following process:
And transmitting the first interference signal to the SSB according to the first transmission parameter.
Optionally, the first transmission parameter includes a transmission power of the first interference signal;
the processor 601 is specifically configured to:
detecting the SSB to obtain reference signal receiving power SS-RSRP and a second SINR of the synchronous signal;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
Optionally, the processor 601 is specifically configured to:
detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB;
and obtaining the SS-RSRP and the second SINR according to the frame head position.
Optionally, the processor 601 is specifically configured to:
Obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB;
obtaining free space loss power according to the interference range;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power.
Optionally, the first transmission parameter includes a frequency domain location and a time domain location at which the first interference signal is transmitted;
the processor 601 is specifically configured to:
detecting PSS and SSS in the SSB to obtain the frame head position of the SSB;
and obtaining the frequency domain position and the time domain position of the first interference signal according to the frame head position.
Optionally, the processor 601 is further configured to decode a physical broadcast channel PBCH in the SSB to obtain a second transmission parameter of a second interference signal;
The transceiver 604 is further configured to send the second interfering signal to a physical random access channel PRACH according to the second transmission parameter.
Optionally, the second transmission parameter includes a frequency domain position at which the second interference signal is transmitted, a time domain position at which the second interference signal is transmitted, and a transmission power of the second interference signal;
the processor 601 is specifically configured to:
Decoding the PBCH to obtain a master information block MIB;
decoding the PDCCH according to the time domain position and the frequency domain position of the physical downlink control channel PDCCH indicated by the MIB to obtain downlink control information DCI;
Decoding a Physical Downlink Shared Channel (PDSCH) according to the DCI to obtain a System Information Block (SIB);
And obtaining the frequency domain position for transmitting the second interference signal, the time domain position for transmitting the second interference signal and the transmitting power of the second interference signal according to the SIB.
Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 601 and various circuits of memory represented by memory 603, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 602 provides a user interface 605. The transceiver 604 may be a number of elements, i.e. include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.
In addition, a specific embodiment of the present invention also provides a computer readable storage medium having stored thereon a computer program, wherein the program when executed by a processor implements the steps of the signal masking method as described in any of the above.
In the several embodiments provided in the present application, it should be understood that the disclosed methods and apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving 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 (Random Access Memory RAM), a magnetic disk, or an optical disk, etc., which can store program codes.
The embodiment of the present invention further provides a computer program product, which includes computer instructions, where the computer instructions, when executed by a processor, implement each process of the embodiment of the method shown in fig. 1 and achieve the same technical effects, and are not repeated herein.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes should also be considered as being within the scope of the present invention.
Claims (12)
1. A signal shielding method, comprising:
acquiring a first signal-to-interference-plus-noise ratio SINR when a terminal enters a Radio Resource Control (RRC) idle state;
Receiving a synchronous signal block SSB, and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
And transmitting the first interference signal to the SSB according to the first transmission parameter.
2. The method of claim 1, wherein the first transmission parameter comprises a transmission power of the first interfering signal;
According to the SSB and/or the first SINR, a first transmission parameter of a first interfering signal is obtained, including:
detecting the SSB to obtain reference signal receiving power SS-RSRP and a second SINR of the synchronous signal;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR and the first SINR.
3. The method of claim 2, wherein detecting the SSB to obtain the reference signal received power SS-RSRP and the second SINR of the synchronization signal comprises:
detecting a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB to obtain a frame head position of the SSB;
and obtaining the SS-RSRP and the second SINR according to the frame head position.
4. The method of claim 2, wherein obtaining the transmit power of the first interfering signal based on the SS-RSRP, the second SINR, and the first SINR comprises:
Obtaining an interference range according to the transmitting power of the SSB, the frequency domain position of the SSB and the receiving power of the SSB;
obtaining free space loss power according to the interference range;
and obtaining the transmitting power of the first interference signal according to the SS-RSRP, the second SINR, the first SINR and the free space loss power.
5. The method of claim 1, wherein the first transmission parameters comprise a frequency domain location and a time domain location at which the first interfering signal is transmitted;
According to the SSB and/or the first SINR, a first transmission parameter of a first interfering signal is obtained, including:
detecting PSS and SSS in the SSB to obtain the frame head position of the SSB;
and obtaining the frequency domain position and the time domain position of the first interference signal according to the frame head position.
6. The method according to claim 1, wherein the method further comprises:
decoding a Physical Broadcast Channel (PBCH) in the SSB to obtain a second transmission parameter of a second interference signal;
And transmitting the second interference signal to a physical random access channel PRACH according to the second transmission parameter.
7. The method of claim 6, wherein the second transmission parameters include a frequency domain location at which the second interfering signal is transmitted, a time domain location at which the second interfering signal is transmitted, and a transmission power of the second interfering signal;
Decoding the physical broadcast channel PBCH in the SSB to obtain a second transmission parameter of a second interference signal, including:
Decoding the PBCH to obtain a master information block MIB;
decoding the PDCCH according to the time domain position and the frequency domain position of the physical downlink control channel PDCCH indicated by the MIB to obtain downlink control information DCI;
Decoding a Physical Downlink Shared Channel (PDSCH) according to the DCI to obtain a System Information Block (SIB);
And obtaining the frequency domain position for transmitting the second interference signal, the time domain position for transmitting the second interference signal and the transmitting power of the second interference signal according to the SIB.
8. A signal shielding apparatus, comprising:
the first acquisition module is used for acquiring a first signal-to-interference-plus-noise ratio SINR when the terminal enters a Radio Resource Control (RRC) idle state;
the first processing module is used for receiving the synchronous signal block SSB and obtaining a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
And the first sending module is used for sending a first interference signal to the SSB according to the first sending parameter.
9. A signal shielding apparatus, comprising: a processor and a transceiver;
the processor is configured to obtain a first signal-to-interference-plus-noise ratio SINR when the terminal enters a radio resource control RRC idle state;
the transceiver is used for receiving the synchronous signal block SSB;
the processor is further configured to obtain a first transmission parameter of a first interference signal according to the SSB and/or the first SINR;
The transceiver is further configured to send the first interference signal to the SSB according to the first transmission parameter.
10. A signal shielding apparatus, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the signal masking method of any one of claims 1 to 7.
11. A readable storage medium, characterized in that the readable storage medium has stored thereon a program which, when executed by a processor, implements the steps in the signal masking method according to any of claims 1 to 7.
12. A computer program product comprising computer instructions which, when executed by a processor, implement the steps in the signal masking method of any of claims 1 to 7.
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| CN202410363833.8A CN118101121A (en) | 2024-03-28 | 2024-03-28 | Signal shielding method, apparatus, device, storage medium, and program product |
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