CN111148119B - Method, apparatus, device and storage medium for selectively processing communication signals - Google Patents
Method, apparatus, device and storage medium for selectively processing communication signals Download PDFInfo
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- CN111148119B CN111148119B CN201911415396.5A CN201911415396A CN111148119B CN 111148119 B CN111148119 B CN 111148119B CN 201911415396 A CN201911415396 A CN 201911415396A CN 111148119 B CN111148119 B CN 111148119B
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Abstract
The invention discloses a method, a device, equipment and a storage medium for selectively processing communication signals, wherein the method comprises the steps of intercepting a target cell information source signal from a base station information source signal according to a scrambling sequence of the target cell information source signal, carrying out digital signal processing on the target cell information source signal to obtain a target cell radio frequency signal, amplifying the power of the target cell radio frequency signal, and transmitting the target cell radio frequency signal after power amplification to a coverage antenna. Due to the non-correlation of the scrambling code sequence of the target cell information source signal, other cell information source signals in the base station information source signal are suppressed, and therefore interception of the target cell information source signal is achieved; the cell information source signals in the physical cells are selected from the information source signals of the physical cells, and then the selected information source signals are subjected to power amplification and transmitted to the coverage antenna, so that the coverage area of the information source signals is effectively increased under the condition of not increasing the total power, the coverage effect of the information source signals is improved, and the product cost of a network coverage optimization system is reduced.
Description
Technical Field
The present invention relates to the field of wireless communications, and more particularly, to a method, apparatus, device, and storage medium for selectively processing communication signals.
Background
The working frequency band of the mobile communication signal coverage optimization system is generally a single or multiple carrier waves in a certain frequency band, in a 4G mobile communication network, multiple cells can use the same carrier wave to cover when a base station covers signals, the signal source signals received by the mobile communication signal coverage optimization system in a wireless mode are multiple cell signals of the same carrier wave, however, the total power of equipment is fixed, the power distributed by each cell is much smaller, which results in a smaller coverage area and poorer coverage effect.
If one physical cell of a plurality of physical cells of the same operator can be selected for power amplification, the area of optimized coverage can be effectively increased under the condition of not increasing the total power, and the product cost of a network coverage optimization system is reduced.
Disclosure of Invention
The present invention is directed to overcoming at least one of the above-mentioned deficiencies in the art and providing a method, an apparatus, a device and a storage medium for selectively processing a communication signal, which effectively increases the coverage area of a transmission signal and enhances the coverage effect of the transmission signal without increasing the total power of the transmission signal device.
A method for selectively processing communication signals intercepts target cell information source signals from base station information source signals according to scrambling sequences of the target cell information source signals, digital signal processing is carried out on the target cell information source signals to obtain target cell radio frequency signals, the power of the target cell radio frequency signals is amplified, and the target cell radio frequency signals after the power is amplified are transmitted to a covering antenna.
The base station information source signal comprises a plurality of cell information source signals, a cell needing communication signal processing is selected as a target cell, and the target cell information source signal can be intercepted from the base station information source signal according to a scrambling sequence of the target cell information source signal; due to the non-correlation of the scrambling code sequence of the target cell information source signal, other cell information source signals in the base station information source signal are suppressed, and therefore interception of the target cell information source signal is achieved. Intercepting a target cell information source signal from a base station information source signal, and then carrying out digital signal processing on the target cell information source signal, wherein the digital signal processing process comprises the steps of scrambling the information source signal by using a scrambling sequence of the target cell information source signal, then modulating and mapping the information source signal, then carrying out digital-to-analog conversion on the information source signal to generate a target cell radio frequency signal, amplifying the power of the target cell radio frequency signal, and transmitting the target cell radio frequency signal after power amplification to a covering antenna; in the base station information source signals sent by the same base station, the cell information source signals are selected from the information source signals of a plurality of physical cells, and then the selected information source signals are subjected to power amplification and transmitted to the covering antenna, so that the coverage area of the information source signals is effectively increased under the condition of not increasing the total power, the coverage effect of the information source signals is improved, and the product cost of a network coverage optimization system is reduced.
Further, before intercepting the target cell information source signal from a base station information source signal according to the scrambling code sequence of the target cell information source signal, determining the target cell and the physical cell identifier of the target cell, and determining the scrambling code sequence of the target cell information source signal according to the physical cell identifier of the target cell;
firstly, determining a physical cell identifier needing signal processing, determining a corresponding cell through the selected physical cell identifier, taking the cell as a target cell, and determining a scrambling code sequence of a target cell information source signal according to the physical cell identifier of the target cell after the physical cell identifiers of the target cell and the target cell are determined; the scrambling sequence of the target cell source signal can be generated by substituting the physical cell identity of the target cell into c (n) (x1(n + Nc) + x2(n + Nc)) mod2, and the above operation of intercepting the target cell source signal from the base station source signal can be realized by the scrambling sequence of the target cell source signal, so that the coverage area of the source signal can be effectively increased without increasing the total power, and the coverage effect can be improved.
Further, determining the target cell and the physical cell identifier of the target cell specifically includes: and determining the target cell and the physical cell identifier of the target cell according to the signal quality parameters and all the physical cell identifiers of the base station source signals.
The method comprises the steps of performing full-band scanning on a base station information source signal within a frequency band range of the base station information source signal to select a frequency band with a stronger signal as a target frequency band, positioning the target frequency band, selecting a physical cell identifier according to signal quality parameters from all physical cell identifiers of the base station information source signal within the target frequency band range, determining a target cell according to the selected physical cell identifier, wherein the selected physical cell identifier is the physical cell identifier of the target cell, so that when the target cell needing communication signal processing is judged and selected, the physical cell identifiers of all the physical cell identifiers of the base station information source signal can be selected according to the signal quality parameters to determine the target cell, and further signal processing is performed according to a scrambling code sequence of the target cell.
Further, determining the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all the physical cell identifiers of the base station information source signal, specifically: and determining the target cell and the physical cell identifier of the target cell according to the strength of the primary synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
Performing full-band scanning on the base station information source signal, and taking the frequency band of the base station information source signal with a stronger signal as a target frequency band according to the intensity of the main synchronous signal and the SINR value; after the positioning is performed in the target frequency band, in the physical cell identifier of the base station source signal within the target frequency band, determining the physical cell identifiers of a target cell and the target cell according to signal quality parameters, wherein the signal quality parameters may include a primary synchronization signal strength and an SINR value (i.e., an LTE signal to noise ratio), selecting the physical cell identifier according to the primary synchronization signal strength and the SINR value, and determining the target cell according to the selected physical cell identifier, i.e., the selected physical cell identifier is the physical cell identifier of the target cell; since the physical layer of the target cell information source signal needs to be processed after the target cell information source signal is intercepted from the base station information source signal, the SINR value is a more preferential condition in the selection of the physical cell identifier than the strength of the primary synchronization signal.
Further, before determining the target cell and the physical cell identifier of the target cell in all the physical cell identifiers of the base station information source signal according to the signal quality parameter, determining all the physical cell identifiers of the base station information source signal according to all the cell identifiers of the base station information source signal and all the cell identifier group numbers of the base station information source signal.
The physical cell identifier of each base station information source signal is composed of a cell identifier of one of the base station information source signals and a cell identifier group number of one of the base station information source signals, and all the physical cell identifiers of the base station information source signals can be determined by PCI (cell.id + group.id) 3, wherein PCI is the physical cell identifier of the base station information source signals, cell.id is the cell identifier of the base station information source signals, and group.id is the cell identifier group number of the base station information source signals. And substituting the cell identifier of each base station information source signal and the cell identifier group number of each base station information source signal into PCI (cell. ID + group. ID) 3 for calculation to obtain all physical cell identifiers of the base station information source signals, and taking the selected physical cell identifier as the physical cell identifier of the target cell after the selection so as to determine the target cell.
Further, before determining all physical cell identifiers of the base station information source signal according to all cell identifiers of the base station information source signal and all cell identifier group numbers of the base station information source signal, detecting and receiving a primary synchronization signal in the base station information source signal, performing time slot synchronization with the primary synchronization signal to obtain all cell identifiers of the base station information source signal, detecting and receiving a secondary synchronization signal in the base station information source signal according to the primary synchronization signal, and performing frame synchronization with the secondary synchronization signal to obtain all cell identifier group numbers of the base station information source signal.
Detecting and receiving a main synchronization signal in a frequency band range of a base station information source signal, carrying out time slot synchronization with the main synchronization signal, and simultaneously obtaining all cell identifications of the base station information source signal indicated by the main synchronization signal; after time slot synchronization, detecting and receiving a secondary synchronization signal in the frequency band range of a base station information source signal on the basis of the primary synchronization signal, carrying out frame synchronization with the secondary synchronization signal, simultaneously obtaining all cell identification group numbers of the base station information source signal, and after determining all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal, obtaining all physical cell identifications of the base station information source signal through calculation.
A device for selectively processing communication signals comprises a baseband signal processing module and a signal power amplifying module, wherein the baseband signal processing module is used for intercepting a target cell information source signal from a base station information source signal according to a scrambling sequence of the target cell information source signal and converting the target cell information source signal into a target cell radio frequency signal, and the signal power amplifying module is used for amplifying the power of the target cell radio frequency signal and transmitting the target cell radio frequency signal after the power is amplified to a coverage antenna.
The base station information source signal comprises a plurality of cell information source signals, the baseband signal processing module selects a cell needing communication signal processing as a target cell, and the target cell information source signal can be intercepted from the base station information source signal according to a scrambling code sequence of the target cell information source signal; due to the non-correlation of the scrambling code sequence of the target cell information source signal, other cell information source signals in the base station information source signal are suppressed, and therefore interception of the target cell information source signal is achieved. After intercepting the target cell information source signal from the base station information source signal, the baseband signal processing module performs digital signal processing on the target cell information source signal: scrambling the information source signal by using a scrambling sequence of the information source signal of the target cell, modulating and mapping the information source signal, performing digital-to-analog conversion on the information source signal to generate a radio frequency signal of the target cell, amplifying the power of the radio frequency signal of the target cell, and transmitting the radio frequency signal of the target cell after amplifying the power to a coverage antenna; in the base station information source signals sent by the same base station, the information source signals of a plurality of physical cells are selected, and then the information source signals are subjected to power amplification and transmitted to the coverage antenna, so that the coverage area of the information source signals is effectively increased under the condition of not increasing the total power, the coverage effect of the information source signals is improved, and the product cost of a network coverage optimization system is reduced.
Further, the baseband signal processing module is further configured to determine the target cell and a physical cell identifier of the target cell, and determine a scrambling code sequence of the target information source signal according to the physical cell identifier.
The baseband signal processing module firstly determines a physical cell identifier needing signal processing, determines a corresponding cell through the selected physical cell identifier, takes the cell as a target cell, and determines a scrambling code sequence of a target cell information source signal according to the physical cell identifier of the target cell after the physical cell identifiers of the target cell and the target cell are determined; the scrambling code sequence of the source signal of the target cell can be determined according to the physical cell identity of the target cell, the scrambling code sequence of the source signal of the target cell can be produced by substituting c (n) ═ x1(n + Nc) + x2(n + Nc)) mod2 into the physical cell identity of the target cell, and the baseband signal processing module can realize the operation of intercepting the source signal of the target cell from the source signal of the base station through the scrambling code sequence of the source signal of the target cell, so that the coverage area of the source signal can be effectively increased without increasing the total power, and the coverage effect can be improved.
Further, the baseband signal processing module is configured to determine the target cell and a physical cell identifier of the target cell, specifically: the baseband signal processing module is further configured to determine the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all the physical cell identifiers of the base station information source signal.
The method comprises the steps of performing full-band scanning on a base station information source signal within a frequency band range of the base station information source signal to select a frequency band with a stronger signal as a target frequency band, positioning the target frequency band, selecting a physical cell identifier according to signal quality parameters from all physical cell identifiers of the base station information source signal within the target frequency band range, determining a target cell according to the selected physical cell identifier, wherein the selected physical cell identifier is the physical cell identifier of the target cell, so that when the target cell needing communication signal processing is judged and selected, the physical cell identifiers of all the physical cell identifiers of the base station information source signal can be selected according to the signal quality parameters to determine the target cell, and further signal processing is performed according to a scrambling code sequence of the target cell.
Further, the baseband signal processing module is further configured to determine the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all physical cell identifiers of the base station information source signal, specifically: and the baseband signal processing module is used for determining the target cell and the physical cell identifier of the target cell according to the strength of the main synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
The baseband signal processing module performs full-band scanning on the base station information source signal and takes the frequency band of the base station information source signal with a stronger signal as a target frequency band; after the target frequency band is located, in the physical cell identifier of the base station source signal in the target frequency band range, determining the physical cell identifiers of a target cell and the target cell according to signal quality parameters, wherein the signal quality parameters can include a primary synchronization signal strength and an SINR value (namely, an LTE signal strength), the baseband signal processing module selects the physical cell identifier according to the primary synchronization signal strength and the SINR value, and determines the target cell according to the selected physical cell identifier, namely, the selected physical cell identifier is the physical cell identifier of the target cell; since the physical layer of the target cell information source signal needs to be processed after the target cell information source signal is intercepted from the base station information source signal, the SINR value is a more preferential condition in the selection of the physical cell identifier than the strength of the primary synchronization signal.
Further, the baseband signal processing module is further configured to determine all physical cell identifiers of the base station information source signal according to all cell identifiers of the base station information source signal and all cell identifier group numbers of the base station information source signal.
The physical cell identifier of each base station information source signal is composed of a cell identifier of one of the base station information source signals and a cell identifier group number of one of the base station information source signals, and all the physical cell identifiers of the base station information source signals can be determined by PCI (cell.id + group.id) 3, wherein PCI is the physical cell identifier of the base station information source signals, cell.id is the cell identifier of the base station information source signals, and group.id is the cell identifier group number of the base station information source signals. And substituting the cell identifier of each base station information source signal and the cell identifier group number of each base station information source signal into PCI (cell. ID + group. ID) 3 for calculation to obtain all physical cell identifiers of the base station information source signals, and taking the selected physical cell identifier as the physical cell identifier of the target cell after the selection so as to determine the target cell.
Further, the baseband signal processing module is further configured to detect and receive a primary synchronization signal in the base station information source signal, obtain all cell identifiers of the base station information source signal by performing time slot synchronization with the primary synchronization signal, detect and receive a secondary synchronization signal in the base station information source signal according to the primary synchronization signal, and obtain all cell identifier groups of the base station information source signal by performing frame synchronization with the secondary synchronization signal.
Detecting and receiving a main synchronization signal in a frequency band range of a base station information source signal, carrying out time slot synchronization with the main synchronization signal, and simultaneously obtaining all cell identifications of the base station information source signal indicated by the main synchronization signal; after time slot synchronization, detecting and receiving a secondary synchronization signal in the frequency band range of a base station information source signal on the basis of the primary synchronization signal, carrying out frame synchronization with the secondary synchronization signal, simultaneously obtaining all cell identification group numbers of the base station information source signal, and after determining all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal, obtaining all physical cell identifications of the base station information source signal through calculation.
A computer device comprising a memory storing a computer program and a processor implementing the above-described method of selectively processing communication signals when the processor executes the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the above-mentioned data processing method.
Compared with the prior art, the invention has the beneficial effects that:
the scheme of the invention intercepts and amplifies the power of the specific cell information source signal and transmits the power to the covering antenna under the condition of not improving the total power of the signal transmission equipment, the power of the transmission equipment is the power of the cell selected by the transmission equipment, and the maximum power of the existing transmission equipment is distributed by each physical cell signal, so the invention effectively increases the covering area of the transmission signal and enhances the covering effect of the signal, and reduces the product cost of a network covering optimization system.
Drawings
Fig. 1 is a flowchart illustrating an overall execution flow of a method for selectively processing a communication signal according to embodiment 1 of the present invention.
Fig. 2 is a schematic flow chart illustrating the execution of steps T1 and S1 in embodiment 1 of the present invention.
Fig. 3 is a schematic flow chart illustrating the execution of steps R1 and T1 in embodiment 1 of the present invention.
Fig. 4 is a schematic flow chart illustrating the execution of steps Q1, Q2, and R1 in embodiment 1 of the present invention.
Fig. 5 is a schematic flow chart illustrating the execution of steps N1, N2, and N3 in embodiment 1 of the present invention.
Fig. 6 is a schematic structural diagram of an apparatus for selectively processing a communication signal according to embodiment 2 of the present invention.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
The method for selectively processing a communication signal provided in embodiment 1 may be applied to any base station or other device suitable for the method, and is specifically applied to a downlink signal transmission processing procedure of the base station or other device, where the base station or other device is collectively referred to as a "base station" in embodiment 1, and in the downlink signal transmission processing procedure of the base station, a base station source signal of the base station includes multiple cell source signals, and a cell source signal suitable for being processed by the method is selected as a target cell source signal, as shown in fig. 1, where the method includes the steps of:
s1: intercepting a target cell information source signal from a base station information source signal according to a scrambling code sequence of the target cell information source signal;
s2: carrying out digital signal processing on the target cell information source signal to obtain a target cell radio frequency signal;
s3: amplifying the power of the radio frequency signal of the target cell;
s4: and transmitting the radio frequency signal of the target cell after power amplification to a coverage antenna.
Step S1 is executed: intercepting the target cell source signal from the base station source signal, typically by (b), (n) + c (n)) mod2, based on the scrambling sequence of the target cell source signal, where b (n) is the base station source signal and c (n) is the scrambling sequence of the target cell source signal; due to the non-correlation of the scrambling code sequence of the target cell information source signal, other cell information source signals in the base station information source signal are suppressed, and therefore interception of the target cell information source signal is achieved. After intercepting the target cell source signal from the base station source signal, step S2 is executed: carrying out digital signal processing on the target cell information source signal, wherein the digital signal processing process comprises the steps of scrambling the information source signal by using a scrambling sequence of the target cell information source signal, modulating and mapping the information source signal, and then carrying out digital-to-analog conversion on the information source signal to generate a target cell radio frequency signal; step S3 is executed: amplifying the power of the radio frequency signal of the target cell; step S4 is executed: and transmitting the radio frequency signal of the target cell after power amplification to a coverage antenna. In the base station information source signals sent by the same base station, the cell information source signals are selected from the information source signals of a plurality of physical cells, and then the selected information source signals are subjected to power amplification and transmitted to the covering antenna, so that the coverage area of the information source signals is effectively increased under the condition of not increasing the total power, the coverage effect of the information source signals is improved, and the product cost of a network coverage optimization system is reduced.
Preferably, as shown in fig. 2, the scrambling code sequence of the source signal of the target cell in the step S1 may be determined by performing step T1 before performing step S1:
t1: determining the target cell and the physical cell identifier of the target cell, and determining the scrambling code sequence of the source signal of the target cell according to the physical cell identifier of the target cell;
step T1 is executed: firstly, determining a physical cell identifier which needs to perform signal processing, determining a corresponding cell through the selected physical cell identifier, taking the cell as a target cell, determining a scrambling code sequence of a target cell source signal according to the physical cell identifier of the target cell after the physical cell identifiers of the target cell and the target cell are determined, and generally determining the scrambling code sequence of the target cell source signal through c (n) ═ x1(n + Nc) + x2(n + Nc)) mod2, wherein Nc is a state offset which ensures that the non-correlation between different sequences is increased, the value of Nc can be 1600, c (n) is the scrambling code sequence of the target cell source signal, and the scrambling code sequence consists of two m sequences x1(n) and x2 (n): where x1(n +31) ═ x1(n +3) + x1(n)) mod2, the sequence x1(n) has an initial value of x1(0) ═ 1, x1(n) ═ 0, and n ═ 1,2,3.., 30; where x2(n +31) ═ x2(n +3) + x2(n +2) + x2(n +1) + x2(n)) mod2, the sequence x2(n) is initialized by
It can be determined that the initial value of x2(n) is different according to different channels, wherein the initial value of x2(n) is x2(n) in scrambling code sequence calculation of a physical broadcast channel
Namely the physical cell identification of the target cell, in the calculation of the scrambling code sequence of the physical downlink control channel, the initial value of x2(n) is
Where ns is the number of the time slot,
a physical cell identity for the target cell; will calculateSubstituting the obtained physical cell identifier of the target cell into c (n) ═ x1(n + Nc) + x2(n + Nc)) mod2 to calculate, and producing a scrambling code sequence of the target cell source signal; after determining the scrambling code sequence of the source signal of the target cell, step S1 is executed to realize the above-mentioned operation of intercepting the source signal of the target cell from the source signal of the base station, thereby realizing effectively increasing the coverage area of the source signal without increasing the total power and improving the coverage effect.
Preferably, the specific implementation process of "determining the target cell and the physical cell identifier of the target cell" in step T1 includes: and determining the target cell and the physical cell identifier of the target cell according to the signal quality parameters and all the physical cell identifiers of the base station source signals.
Performing full-band scanning on a base station information source signal within a frequency band range of the base station information source signal to select a frequency band with a stronger signal as a target frequency band, positioning the frequency band at the target frequency band, selecting a physical cell identifier in all physical cell identifiers of the base station information source signal within the target frequency band range according to signal quality parameters, determining the target cell according to the selected physical cell identifier, wherein the selected physical cell identifier is the physical cell identifier of the target cell; step T1 is executed before step S1, the target cell requiring communication signal processing is determined and selected, the physical cell id of all physical cell ids of the base station source signal is selected according to the signal quality parameter, so as to determine the target cell, and in step S1, further signal processing is performed according to the scrambling code sequence of the target cell.
As a preferred scheme, the specific process of "determining the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all the physical cell identifiers of the base station source signal" in step T1 includes: and determining the target cell and the physical cell identifier of the target cell according to the strength of the primary synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
Executing step T1, wherein the signal quality parameter mentioned in step T1 preferably adopts the strength and SINR value of the primary synchronization signal as the standard for measuring the signal quality, performs full-band scanning on the base station information source signal, and takes the frequency band of the base station information source signal with stronger signal as the target frequency band according to the strength and SINR value of the primary synchronization signal; after the positioning is performed in the target frequency band, in the physical cell identifier of the base station source signal within the target frequency band, determining the physical cell identifiers of a target cell and the target cell according to signal quality parameters, wherein the signal quality parameters may include a primary synchronization signal strength and an SINR value (i.e., LTE signal strength), selecting the physical cell identifier according to the primary synchronization signal strength and the SINR value, and determining the target cell according to the selected physical cell identifier, i.e., the selected physical cell identifier is the physical cell identifier of the target cell; since the physical layer of the target cell information source signal needs to be processed after the target cell information source signal is intercepted from the base station information source signal, the SINR value is a more preferential condition in the selection of the physical cell identifier than the strength of the primary synchronization signal.
Preferably, as shown in fig. 3, all physical cell identities of the source signal of the base station in the step T1 may be determined by performing step R1 before performing step T1:
r1: and determining all physical cell identifications of the base station information source signal according to all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal.
The physical cell identifier of each base station source signal is composed of a cell identifier of one of the base station source signals and a cell identifier group number of one of the base station source signals, and step P1 is executed: all physical cell identifiers of the base station information source signal are usually determined by PCI ═ cell.id + group.id × 3, where PCI is a physical cell identifier of the base station information source signal, the cell.id is a cell identifier of the base station information source signal, and the group.id is a cell identifier group number of the base station information source signal. Wherein, the value range of cell.ID can be [0,2], the value range of group.ID can be [0,167], and both can take integer values; calculating by substituting the cell identifier of each base station information source signal and the cell identifier group number of each base station information source signal into PCI (cell.id + group.id) × 3, so as to obtain 504 physical cell identifiers of the base station information source signals, then executing step T1, and selecting the physical cell identifier of the base station information source signal as the physical cell identifier of the target cell according to the signal quality parameters from all the physical cell identifiers of the base station information source signals, thereby determining the target cell.
Preferably, as shown in fig. 4, all cell ids of the base station source signal and all cell id group numbers of the base station source signal in the step R1 are determined by performing steps Q1 and Q2 before performing step R1:
q1: detecting and receiving a main synchronization signal in the base station information source signal, and performing time slot synchronization with the main synchronization signal to obtain all cell identifiers of the base station information source signal;
q2: detecting and receiving a slave synchronization signal in the base station source signal according to the master synchronization signal received in step Q1, and obtaining all cell identification group numbers of the base station source signal by performing frame synchronization with the slave synchronization signal.
Step Q1 is executed: detecting and receiving a main synchronization signal in a frequency band range of a base station information source signal, carrying out time slot synchronization with the main synchronization signal, and simultaneously obtaining all cell identifications of the base station information source signal indicated by the main synchronization signal; after the time slot synchronization, the step Q2 is executed: detecting and receiving a secondary synchronization signal in the frequency band range of a base station information source signal on the basis of the primary synchronization signal, performing frame synchronization with the secondary synchronization signal, simultaneously obtaining all cell identification group numbers of the base station information source signal, and after determining all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal, executing a step P1, substituting the determined all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal into PCI (cell.ID + group.ID) 3 for calculation to obtain all physical cell identifications of the base station information source signal.
As a preferred scheme, based on the processing of the downlink signal of the base station, as shown in fig. 5, the method further includes processing the user signal corresponding to the base station, and performing the following steps:
n1: filtering the user signal according to the frequency bandwidth message of the target cell to obtain an uplink signal of the target cell;
n2: converting the uplink signal of the target cell into an uplink radio frequency signal;
n3: amplifying the power of the uplink radio frequency signal and transmitting the uplink radio frequency signal after power amplification to the base station;
the processing of the user signal is similar to the processing of the base station downlink signal, i.e. by performing step N1: and filtering the uplink signal of the target cell in the user signal according to the frequency bandwidth message of the target cell, and amplifying the power of the uplink signal of the target cell independently, so that the signal strength and the transmission effect of the uplink signal of the target cell can be effectively enhanced under the condition of not increasing the total power.
Example 2
The method for selectively processing a communication signal provided in embodiment 1 can be specifically applied to the apparatus for selectively processing a communication signal provided in embodiment 2, where the apparatus can be a base station or other equipment suitable for the method provided in embodiment 1, or belong to a part of the base station or other equipment, in embodiment 2, the apparatus is regarded as belonging to a part of the base station or any other equipment, the base station or any other suitable equipment is hereinafter referred to as "base station" in embodiment 2, the apparatus specifically processes downlink signal transmission of the base station, in a downlink signal transmission process of the base station, a base station source signal of the base station includes a plurality of cell source signals, and the apparatus selects a cell source signal that needs to be processed therein as a target cell source signal;
as shown in fig. 6, the apparatus includes: a baseband signal processing module M10 and a signal power amplifying module M20; the baseband signal processing module M10 is configured to intercept a target cell information source signal from a base station information source signal according to a scrambling sequence of the target cell information source signal, and convert the target cell information source signal into a target cell radio frequency signal, and the signal power amplification module M20 is configured to amplify power of the target cell radio frequency signal, and transmit the target cell radio frequency signal after power amplification to a coverage antenna;
in the process of processing the target cell information source signal, the baseband signal processing module M10 specifically executes the following steps:
s1: intercepting a target cell information source signal from a base station information source signal according to a scrambling code sequence of the target cell information source signal;
s2: carrying out digital signal processing on the target cell information source signal to obtain a target cell radio frequency signal;
the baseband signal processing module M10 performs step S1: intercepting the target cell source signal from the base station source signal, typically by (b), (n) + c (n)) mod2, based on the scrambling sequence of the target cell source signal, where b (n) is the base station source signal and c (n) is the scrambling sequence of the target cell source signal; due to the non-correlation of the scrambling code sequence of the target cell information source signal, other cell information source signals in the base station information source signal are suppressed, and therefore interception of the target cell information source signal is achieved. After intercepting the target cell source signal from the base station source signal, the baseband signal processing module M10 executes step S2: carrying out digital signal processing on the target cell information source signal, wherein the digital signal processing process comprises the steps of scrambling the information source signal by using a scrambling sequence of the target cell information source signal, modulating and mapping the information source signal, and then carrying out digital-to-analog conversion on the information source signal to generate a target cell radio frequency signal;
in the process of processing the target cell source signal, the signal power amplifying module M20 specifically executes the following steps:
s3: amplifying the power of the target cell radio frequency signal generated by the baseband signal processing module M10;
s4: and transmitting the radio frequency signal of the target cell after power amplification to a coverage antenna.
In the base station information source signals sent by the same base station, the information source signals of a plurality of physical cells are selected, and then the information source signals are subjected to power amplification and transmitted to the coverage antenna, so that the coverage area of the information source signals is effectively increased under the condition of not increasing the total power, the coverage effect of the information source signals is improved, and the product cost of a network coverage optimization system is reduced.
Preferably, the baseband signal processing module M10 performs the scrambling code sequence of the target cell source signal in step S1, and the determination can be made by the baseband signal processing module M10 performing step T1 before performing step S1:
t1: determining the target cell and the physical cell identifier of the target cell, and determining the scrambling code sequence of the source signal of the target cell according to the physical cell identifier of the target cell;
the baseband signal processing module M10 performs step T1: firstly, determining a physical cell identifier which needs to perform signal processing, determining a corresponding cell through the selected physical cell identifier, taking the cell as a target cell, determining a scrambling code sequence of a target cell source signal according to the physical cell identifier of the target cell after the physical cell identifiers of the target cell and the target cell are determined, and generally determining the scrambling code sequence of the target cell source signal through c (n) ═ x1(n + Nc) + x2(n + Nc)) mod2, wherein Nc is a state offset which ensures that the non-correlation between different sequences is increased, the value of Nc can be 1600, c (n) is the scrambling code sequence of the target cell source signal, and the scrambling code sequence consists of two m sequences x1(n) and x2 (n): where x1(n +31) ═ x1(n +3) + x1(n)) mod2, the sequence x1(n) has an initial value of x1(0) ═ 1, x1(n) ═ 0, and n ═ 1,2,3.., 30; where x2(n +31) ═ x2(n +3) + x2(n +2) + x2(n +1) + x2(n)) mod2, the sequence x2(n) is initialized by
It can be determined that the initial value of x2(n) is different according to different channels, wherein the initial value of x2(n) is x2(n) in scrambling code sequence calculation of a physical broadcast channel
Namely the purposeThe physical cell ID of the target cell, in the calculation of the scrambling code sequence of the physical downlink control channel, the initial value of x2(n) is
Where ns is the number of the time slot,
a physical cell identity for the target cell; substituting the calculated physical cell identifier of the target cell into c (n) ═ x1(n + Nc) + x2(n + Nc)) mod2 to calculate, and producing a scrambling code sequence of the target cell source signal; after determining the scrambling code sequence of the source signal of the target cell, step S1 is executed to realize the above-mentioned operation of intercepting the source signal of the target cell from the source signal of the base station, thereby realizing effectively increasing the coverage area of the source signal without increasing the total power and improving the coverage effect.
Preferably, the specific implementation process of "determining the target cell and the physical cell identifier of the target cell" in step T1 executed by the baseband signal processing module M10 is as follows: and determining the target cell and the physical cell identifier of the target cell according to the signal quality parameters and all the physical cell identifiers of the base station source signals.
The baseband signal processing module M10 performs full-band scanning on the base station information source signal within the frequency band range of the base station information source signal to select the frequency band with a stronger signal as a target frequency band, and after the target frequency band is located, selects the physical cell identifier in all the physical cell identifiers of the base station information source signal within the target frequency band range according to the signal quality parameters, and determines the target cell according to the selected physical cell identifier, where the selected physical cell identifier is the physical cell identifier of the target cell; the baseband signal processing module M10 performs step T1 before step S1, determines and selects a target cell that needs to be processed by a communication signal, and selects a physical cell identifier of all physical cell identifiers of the base station source signal according to the signal quality parameter, thereby determining the target cell, and the baseband signal processing module M10 performs further signal processing according to the scrambling code sequence of the target cell in step S1.
Preferably, the specific process of "determining the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all the physical cell identifiers of the base station source signal" in step T1 executed by the baseband signal processing module M10 is as follows: and determining the target cell and the physical cell identifier of the target cell according to the strength of the primary synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
The baseband signal processing module M10 executes step T1, the signal quality parameter mentioned in step T1 preferably adopts the main synchronization signal strength and SINR value as the standard for measuring the signal quality, the baseband signal processing module M10 performs full-band scanning on the base station source signal, and the frequency band of the base station source signal with stronger signal is used as the target frequency band according to the main synchronization signal strength and SINR value; after the positioning is performed in the target frequency band, in the physical cell identifier of the base station source signal within the target frequency band, determining the physical cell identifiers of a target cell and the target cell according to signal quality parameters, wherein the signal quality parameters may include a primary synchronization signal strength and an SINR value (i.e., LTE signal strength), selecting the physical cell identifier according to the primary synchronization signal strength and the SINR value, and determining the target cell according to the selected physical cell identifier, i.e., the selected physical cell identifier is the physical cell identifier of the target cell; after intercepting the target cell information source signal from the base station information source signal, the baseband signal processing module M10 needs to process the physical layer of the target cell information source signal, so that the SINR value is a more preferential condition in the selection of the physical cell identifier than the primary synchronization signal strength.
Preferably, all the physical cell identifiers of the base station source signal in step T1 executed by the baseband signal processing module M10 may be determined by the baseband signal processing module M10 executing step R1 before executing step T1:
r1: and determining all physical cell identifications of the base station information source signal according to all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal.
The physical cell id of each base station source signal is composed of a cell id of one of the base station source signals and a cell id group number of one of the base station source signals, and the baseband signal processing module M10 executes step P1: all physical cell identifiers of the base station information source signal are usually determined by PCI ═ cell.id + group.id × 3, where PCI is a physical cell identifier of the base station information source signal, the cell.id is a cell identifier of the base station information source signal, and the group.id is a cell identifier group number of the base station information source signal. Wherein, the value range of cell.ID can be [0,2], the value range of group.ID can be [0,167], and both can take integer values; the baseband signal processing module M10 may obtain 504 physical cell identifiers of the base station information source signals by substituting the cell identifier of each base station information source signal and the cell identifier group number of each base station information source signal into PCI ═ cell.id + group.id × 3 for calculation, and the baseband signal processing module M10 then executes step T1, and selects a physical cell identifier of the base station information source signal among all the physical cell identifiers of the base station information source signals according to the signal quality parameters as the physical cell identifier of the target cell, thereby determining the target cell.
Preferably, all cell ids of the base station source signal and all cell id group numbers of the base station source signal in step R1 executed by the baseband signal processing module M10 may be determined by the baseband signal processing module M10 executing steps Q1 and Q2 before executing step R1:
q1: detecting and receiving a main synchronization signal in the base station information source signal, and performing time slot synchronization with the main synchronization signal to obtain all cell identifiers of the base station information source signal;
q2: detecting and receiving a slave synchronization signal in the base station source signal according to the master synchronization signal received in step Q1, and obtaining all cell identification group numbers of the base station source signal by performing frame synchronization with the slave synchronization signal.
The baseband signal processing module M10 performs step Q1: detecting and receiving a main synchronization signal in a frequency band range of a base station information source signal, carrying out time slot synchronization with the main synchronization signal, and simultaneously obtaining all cell identifications of the base station information source signal indicated by the main synchronization signal; after completing the slot synchronization, the baseband signal processing module M10 performs step Q2: on the basis of the master synchronization signal, a slave synchronization signal is detected and received in the frequency band range of a base station information source signal, frame synchronization is performed with the slave synchronization signal, all cell identification group numbers of the base station information source signal are obtained at the same time, after all cell identifications of the base station information source signal and all cell identification group numbers of the base station information source signal are determined, the baseband signal processing module M10 executes the step P1, all the determined cell identifications of the base station information source signal and all the determined cell identification group numbers of the base station information source signal are substituted into PCI (cell.id + group.id) 3 for calculation, and all physical cell identifications of the base station information source signal are obtained.
Preferably, the baseband signal processing module M10 and the signal power amplifying module M20 further process the user signal corresponding to the base station based on the processing of the downlink signal of the base station, and the processing of the baseband signal processing module M10 includes the following steps:
n1: filtering the user signal according to the frequency bandwidth message of the target cell to obtain an uplink signal of the target cell;
n2: converting the uplink signal of the target cell into an uplink radio frequency signal;
the signal power amplifying module M20 amplifies the power of the uplink rf signal obtained after the baseband signal processing module M10 performs step N2, and transmits the uplink rf signal after power amplification to the base station;
the processing of the user signal by the apparatus is similar to the processing of the base station downlink signal, that is, the step N1 is performed by the baseband signal processing module M10: the uplink signal of the target cell is filtered out from the user signal according to the frequency bandwidth message of the target cell, and the signal power amplification module M20 is used to individually amplify the power of the uplink signal of the target cell obtained by the baseband signal processing module M10, so that the signal strength and transmission effect of the uplink signal of the target cell can be effectively enhanced without increasing the total power.
Example 3
The method for selectively processing communication signals provided in embodiment 1 can also be applied to the computer device provided in embodiment 3, and the computer device provided in embodiment 3 includes a memory and a processor, the memory stores a computer program, and the processor can implement the method for selectively processing communication signals provided in embodiment 1 when executing the computer program.
Example 4
The method of selectively processing a communication signal provided in embodiment 1 may also be applied to the computer-readable storage medium provided in embodiment 4, where the computer-readable storage medium provided in embodiment 4 has a computer program stored thereon, and the computer program, when executed by a processor, may implement the method of selectively processing a communication signal provided in embodiment 1.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (10)
1. A method of selectively processing a communication signal,
determining a target cell and a physical cell identifier of the target cell according to signal quality parameters and all physical cell identifiers of base station information source signals, determining a scrambling sequence of a target cell information source signal according to the physical cell identifier of the target cell, intercepting the target cell information source signal from the base station information source signal according to the scrambling sequence of the target cell information source signal, scrambling, modulating, mapping and carrying out digital-to-analog conversion on the target cell information source signal by using the scrambling sequence of the target cell information source signal to obtain a target cell radio frequency signal, amplifying the power of the target cell radio frequency signal, and transmitting the target cell radio frequency signal after power amplification to a coverage antenna;
the base station source signal comprises a plurality of cell source signals of the same carrier wave.
2. The method of claim 1, wherein the determining the target cell and the physical cell id of the target cell according to the signal quality parameter and all physical cell ids of the source signal of the base station is specifically:
and determining the target cell and the physical cell identifier of the target cell according to the strength of the primary synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
3. The method of selectively processing a communication signal as recited in claim 2, further comprising determining all physical cell identities of the base station source signal based on all cell identities of the base station source signal and all cell identity group numbers of the base station source signal before determining the target cell and the physical cell identity of the target cell based on the signal quality parameter and all physical cell identities of the base station source signal.
4. The method of claim 3, further comprising detecting and receiving a primary synchronization signal in the base station source signal, obtaining all cell identities of the base station source signal by performing slot synchronization with the primary synchronization signal, detecting and receiving a secondary synchronization signal in the base station source signal according to the primary synchronization signal, and obtaining all cell identity group numbers of the base station source signal by performing frame synchronization with the secondary synchronization signal, before determining all physical cell identities of the base station source signal according to all cell identities of the base station source signal and all cell identity group numbers of the base station source signal.
5. An apparatus for selectively processing a communication signal, comprising a baseband signal processing module and a signal power amplification module;
the baseband signal processing module is used for determining a target cell and a physical cell identifier of the target cell according to signal quality parameters and all physical cell identifiers of base station information source signals, determining a scrambling sequence of the target cell information source signals according to the physical cell identifiers, intercepting the target cell information source signals from the base station information source signals according to the scrambling sequence of the target cell information source signals, and scrambling, modulating, mapping and performing digital-to-analog conversion on the target cell information source signals by using the scrambling sequence of the target cell information source signals to obtain target cell radio-frequency signals;
the signal power amplification module is used for amplifying the power of the radio-frequency signal of the target cell and transmitting the radio-frequency signal of the target cell after the power is amplified to the coverage antenna;
the base station source signal comprises a plurality of cell source signals of the same carrier wave.
6. The apparatus for selectively processing communication signals according to claim 5,
the baseband signal processing module is further configured to determine the target cell and the physical cell identifier of the target cell according to the signal quality parameter and all physical cell identifiers of the base station information source signal, specifically:
and the baseband signal processing module is used for determining the target cell and the physical cell identifier of the target cell according to the strength of the main synchronization signal, the SINR value and all the physical cell identifiers of the base station source signal.
7. The apparatus for selectively processing a communication signal as claimed in claim 6, wherein the baseband signal processing module is further configured to determine all physical cell ids of the base station source signal according to all cell ids of the base station source signal and all cell id group numbers of the base station source signal.
8. The apparatus of claim 7, wherein the baseband signal processing module is further configured to detect and receive a primary synchronization signal in the base station source signal, obtain all cell ids of the base station source signal by performing slot synchronization with the primary synchronization signal, detect and receive a secondary synchronization signal in the base station source signal according to the primary synchronization signal, and obtain all cell id group numbers of the base station source signal by performing frame synchronization with the secondary synchronization signal.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor, when executing the computer program, implements the method of selectively processing communication signals of any of claims 1 to 4.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of selectively processing a communication signal according to any one of claims 1 to 4.
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