CN113114327A - Signal relay method, signal identification method, device and equipment - Google Patents

Signal relay method, signal identification method, device and equipment Download PDF

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Publication number
CN113114327A
CN113114327A CN202110297876.7A CN202110297876A CN113114327A CN 113114327 A CN113114327 A CN 113114327A CN 202110297876 A CN202110297876 A CN 202110297876A CN 113114327 A CN113114327 A CN 113114327A
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signal
energy value
frequency point
initial
frequency
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CN113114327B (en
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杨艳
郭希蕊
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15564—Relay station antennae loop interference reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a signal relay method, a signal identification method, a device and equipment, relating to the technical field of communication and used for determining useful signals in a wireless communication environment, wherein the method comprises the following steps: receiving a wireless signal, and determining that the wireless signal comprises a target variable frequency signal and a pulse signal; respectively determining a first energy value and a second energy value; the first energy value is used for representing the average energy of the target variable frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal; and under the condition that the ratio of the second energy value to the first energy value is within a preset range, determining the wireless signal as a signal amplified by the signal relay equipment. The embodiment of the invention is applied to a communication environment running at a high speed.

Description

Signal relay method, signal identification method, device and equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal relaying method, a signal identifying device, and a signal relaying apparatus.
Background
Currently, in a wireless communication environment, when a radio penetration loss is large (for example, a train passes through a tunnel), in order to ensure signal quality between two communication parties, a scheme of wireless relay may be used to perform relay amplification of a wireless signal between a User Equipment (UE) and a base station. Specifically, taking an example that a UE on a train receives a downlink signal of a base station, a repeater is installed on the train, and the repeater receives the downlink signal sent by the repeater and performs relay amplification processing on the downlink signal. Further, the repeater sends the amplified downlink signal as a useful signal to the UE, so as to ensure the signal quality of the wireless signal received by the UE.
However, with the above-mentioned scheme, the low-quality downlink signal penetrating from the window becomes the homologous interference signal of the useful signal, and if the UE receives the homologous interference signal before the useful signal, the homologous interference signal is decoded, and the communication between the UE and the useful signal may still fail.
Disclosure of Invention
The embodiment of the invention provides a signal relay method, a signal identification device and signal identification equipment, which are used for determining a useful signal after relay amplification by relay equipment.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a signal relaying method is provided, where the method includes: receiving an initial signal, and carrying out frequency conversion processing on the initial signal to obtain an initial frequency conversion signal; determining a third energy value, wherein the third energy value is used for representing the average energy of the initial variable frequency signal in a unit bandwidth; generating a pulse signal based on the third energy value; the power of the pulse signal is a third energy value; determining the position of the pulse signal, and combining the initial variable frequency signal and the pulse signal based on the position of the pulse signal to generate a combined signal; and amplifying the combined signal and sending the amplified combined signal outwards.
In a second aspect, a signal identification method is provided, which includes: receiving a wireless signal, and determining that the wireless signal comprises a target variable frequency signal and a pulse signal; respectively determining a first energy value and a second energy value; the first energy value is used for representing the average energy of the target variable frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal; and under the condition that the ratio of the second energy value to the first energy value is within a preset range, determining the wireless signal as a signal amplified by the signal relay equipment.
In a third aspect, there is provided a signal relaying apparatus including a receiving unit, a processing unit, a determining unit, a generating unit, a combining unit, and a transmitting unit; a receiving unit for receiving an initial signal; the processing unit is used for carrying out frequency conversion processing on the initial signal received by the receiving unit so as to obtain an initial frequency conversion signal; the determining unit is used for determining a third energy value after the initial frequency conversion signal is obtained, wherein the third energy value is used for representing the average energy of the initial frequency conversion signal in a unit bandwidth; a generating unit for generating a pulse signal based on the third energy value determined by the determining unit; the power of the pulse signal is a third energy value; the determining unit is also used for determining the position of the pulse signal; a merging unit for merging the initial frequency-converted signal and the pulse signal based on the position of the pulse signal to generate a merged signal; the processing unit is also used for amplifying the combined signal combined by the combining unit; and the sending unit is used for sending the amplified combined signal to the outside.
In a fourth aspect, a signal identification apparatus is provided, which includes a receiving unit and a determining unit; a receiving unit for receiving a wireless signal; the determining unit is used for determining that the wireless signals received by the receiving unit comprise target variable frequency signals and pulse signals; the determining unit is further used for respectively determining a first energy value and a second energy value; the first energy value is used for representing the average energy of the target variable frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal; and the determining unit is further used for determining the wireless signal as the signal amplified by the signal relay equipment under the condition that the ratio of the second energy value to the first energy value is within a preset range.
In a fifth aspect, there is provided a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the signal relaying method as in the first aspect or the signal identifying method as in the second aspect.
In a sixth aspect, a signal relay apparatus includes: a processor and a memory; wherein the memory is used to store one or more programs, the one or more programs comprising computer executable instructions, which when run by the signal relaying device, the processor executes the computer executable instructions stored by the memory to cause the signal relaying device to perform the signal relaying method as in the first aspect.
In a seventh aspect, a signal receiving apparatus includes: a processor and a memory; wherein the memory is used for storing one or more programs, the one or more programs comprising computer executable instructions, and the processor executes the computer executable instructions stored by the memory when the signal receiving apparatus is running, so as to make the signal receiving apparatus execute the signal identification method as the second aspect.
In an eighth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the signal relaying method of the first aspect or the signal identifying method of the second aspect.
The embodiment of the invention provides a signal relay method, a signal identification device and a signal identification device, which are applied to a wireless communication environment, when a relay device amplifies an initial signal, a pulse signal for identifying the relay device is added in the initial frequency conversion signal after the frequency conversion processing is carried out on the initial signal, and the power of the pulse signal is the same as the average energy in a unit bandwidth of the initial frequency conversion signal, so that after a signal receiving device receives each wireless signal, after the wireless signal is determined to comprise a target frequency conversion signal and the pulse signal, whether the wireless signal is a useful signal after the amplification processing of the relay device can be judged according to the magnitude relation between a second energy value of the pulse signal and a first energy value of the target frequency conversion signal. Further, the determined useful signals can be subjected to subsequent decoding processing, and the communication quality of both communication parties can be ensured.
Drawings
Fig. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention;
fig. 2 is a first flowchart illustrating a signal relaying method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a signal relaying method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an initial frequency-converted signal according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a signal relaying method according to an embodiment of the present invention;
fig. 6 is a first flowchart illustrating a signal identification method according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a signal identification method according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a signal relay device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a signal identification apparatus according to an embodiment of the present invention;
fig. 10 is a first schematic structural diagram of a signal relay device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a signal relay device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, "/" means "or" unless otherwise specified, for example, a/B may mean a or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" or "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.
The signal relay method and the signal identification provided by the embodiment of the invention can be suitable for a wireless communication system. Fig. 1 shows a schematic structural diagram of the wireless communication system. As shown in fig. 1, the wireless communication system 10 includes a signal relay apparatus 11, a signal reception apparatus 12, and a signal transmission apparatus 13. The signal relay apparatus 11 is connected to the signal reception apparatus 12 and the signal transmission apparatus 13, respectively. The signal relay device 11 communicates with the signal receiving device 12 and the signal transmitting device 13 by using a wireless connection method.
The signal relay device 11 may be used in a mobile communication environment, such as on a running train. The signal relay apparatus 11 may also be used in a fixed wireless communication environment, such as an underground environment, a cave environment, or the like, in which the penetration loss is large.
The signal receiving device 12 is used for receiving the useful signal transmitted by the signal relaying device 11, and may also be used for receiving the homologous interference signal transmitted by the signal transmitting device 13. Illustratively, the signal receiving device 12 may be a UE, or may be a device in a base station.
The signal transmission device 13 is used for transmitting wireless signals carrying data packets to the outside.
Illustratively, the signal transmission device 13 may be a UE, or may be a device in a base station.
It is to be understood that, in the case where the signal transmission device 13 is a UE, the signal reception device 12 is a device in a base station that receives an uplink signal. When the signal transmitting apparatus 13 is an apparatus in a base station, the signal receiving apparatus 12 is a UE that receives a downlink signal.
The signal relay device 11 may be configured to receive a wireless signal (may be an uplink signal or a downlink signal) sent by the signal sending device, amplify the received wireless signal, and send the amplified wireless signal to the outside.
The signal relay apparatus 11 may also insert a pulse signal serving as an identifier into the wireless signal during the process of amplifying the received wireless signal. The power of the pulse signal is equivalent to the energy value in the unit bandwidth after the frequency conversion of the wireless signal.
For example, the signal relay device 11 may be a repeater, or may be another relay device that can amplify a wireless signal.
In the case that the signal relay device 11 is a repeater, the signal relay device 11 also includes an antenna, a radio frequency duplexer, a low noise amplifier, a down converter, a filter, a mid-amplifier, an up converter, a power amplifier, and other components or modules, and the functions of the components or modules are the same as the functions of the components or modules in the repeater.
The signal relaying method and the signal identifying method provided by the embodiment of the present invention are described below with reference to the drawings, and the signal relaying method may be applied to the above-mentioned signal relaying apparatus and also to a signal relaying device in the signal relaying apparatus. The signal identification method provided by the embodiment of the invention can be applied to the signal receiving equipment and can also be applied to a signal identification device in the signal receiving equipment.
As shown in fig. 2, a signal relaying method provided in an embodiment of the present invention includes the following steps S201 to S208:
s201, the signal relay equipment receives an initial signal.
As a possible implementation, the signal relay apparatus receives the initial signal transmitted by the signal transmission apparatus by using a signal receiving antenna therein.
It can be understood that, in the case where the signal transmission apparatus is an apparatus in a base station, the initial signal is a downlink signal, and in the case where the signal transmission apparatus is a UE, the initial signal is an uplink signal.
S202, the signal relay equipment carries out frequency conversion processing on the initial signal to obtain an initial frequency conversion signal.
As a possible implementation manner, the signal relay device performs a series of frequency conversion processing on the initial signal by using a low noise amplifier, a down converter, a filter, a middle amplifier and an up converter thereof, so as to generate an initial frequency conversion signal.
It is understood that the initial frequency-converted signal is an analog signal after digital-to-analog conversion.
S203, the signal relay apparatus determines a third energy value.
Wherein the third energy value is used to represent the average energy of the initial frequency-converted signal within a unit bandwidth.
As a possible implementation manner, the signal relay device analyzes the initial frequency conversion signal to obtain a center frequency point, a bandwidth, and a power of each frequency point of the initial frequency conversion signal, so as to determine a third energy value.
The specific implementation manner of this step may refer to the following description of the embodiment of the present invention, and is not described herein again.
And S204, the signal relay equipment generates a pulse signal based on the third energy value.
Wherein the power of the pulse signal is a third energy value.
As a possible implementation, the signal relaying device determines the third energy value as the power of the pulse signal.
S205, the signal relay equipment determines the position of the pulse signal.
As a possible implementation manner, the signal relay device determines the position of the frequency point of the pulse signal in the initial frequency conversion signal.
The specific implementation manner of this step may refer to the following description of the embodiment of the present invention, and is not described herein again.
It should be noted that, in the embodiment of the present invention, the execution sequence among S203-S204 and S205 is not limited, and in practical applications, the signal relay device may execute S203-S204 first and then execute S205, may execute S205 first and then execute S203-S204, and may execute S203-S204 and S205 simultaneously.
S206, the signal relay equipment combines the initial frequency conversion signal and the pulse signal based on the position of the pulse signal to generate a combined signal.
As one possible implementation, the signal relay apparatus inserts the pulse signal into the initial frequency-converted signal based on the position of the pulse signal to generate a combined signal.
And S207, the signal relay equipment amplifies the combined signal.
As a possible implementation manner, the signal relay device performs amplification processing on the combined signal by using a power amplifier therein to generate an amplified combined signal.
And S208, the signal relay equipment sends the amplified combined signal to the outside.
As a possible implementation manner, the signal relay device sends the amplified combined signal to the signal receiving device by using its antenna.
In one design, in order to determine the third energy value of the initial frequency conversion signal, as shown in fig. 3, S203 provided in the embodiment of the present invention specifically includes following S2031 to S2032.
S2031, the signal relay equipment determines a central frequency point and a bandwidth of the initial frequency conversion signal and the power of each frequency point in the initial frequency conversion signal.
As a possible implementation manner, the signal relay device analyzes the initial frequency conversion signal to determine a center frequency point and a bandwidth of the initial frequency conversion signal and a power of each frequency point in the initial frequency conversion signal.
S2032, the signal relay equipment determines a third energy value based on the center frequency point and the bandwidth of the initial frequency conversion signal and the power of each frequency point in the initial frequency conversion signal.
As a possible implementation manner, the signal relay device determines the third energy value based on the center frequency point and the bandwidth of the initial frequency conversion signal, the power of each frequency point in the initial frequency conversion signal, and the following formula one:
Figure BDA0002984999960000061
wherein,
Figure BDA0002984999960000071
is a third energy value, f0Is the central frequency point of the initial frequency conversion signal, W is the bandwidth of the initial frequency conversion signal, PcThe power of each frequency point in the initial frequency conversion signal is defined as f, the frequency point of the initial frequency conversion signal is defined as H, and the power of the initial frequency conversion signal is defined as H.
Illustratively, fig. 4 shows a schematic diagram of an initial frequency-converted signal. As shown in FIG. 4, the center frequency point of the initial frequency-converted signal is f0The bandwidth is W, the power of the center frequency point is H, and the third energy value is a shaded portion in the figure.
In one design, in order to determine the position of the pulse signal, as shown in fig. 5, S205 provided in the embodiment of the present invention may specifically include the following S2051 to S2052.
S2051, the signal relay equipment acquires a first side lobe frequency point and a second side lobe frequency point of the initial frequency conversion signal.
The first side lobe frequency point is a central frequency point of a first side lobe, the second side lobe frequency point is a central frequency point of a second side lobe, and the first side lobe and the second side lobe are positioned on the same side of the central frequency point of the initial frequency conversion signal. The power of the first side lobe frequency point is larger than that of the second side lobe frequency point.
As a possible implementation manner, the signal relay device analyzes the initial frequency conversion signal to obtain the first side lobe frequency point and the second side lobe frequency point.
Illustratively, as shown in fig. 4, when the first side lobe and the second side lobe are both located at the left side of the central frequency point of the initial frequency-converted signal, the frequency point of the first side lobe is-f1The second side lobe frequency point is-f2. When the first side lobe and the second side lobe are both positioned at the right side of the central frequency point of the initial frequency conversion signal, the frequency point of the first side lobe is f1The second sidelobe frequency point may be f2。
And S2052, the signal relay equipment determines the position of the pulse signal based on the first side lobe frequency point and the second side lobe frequency point.
As a possible implementation manner, the signal relay device determines the position of the pulse signal in the initial frequency conversion signal based on the size of the first side lobe frequency point and the size of the second side lobe frequency point.
In one case, as shown in fig. 4, if the first side lobe and the second side lobe are both located on the left side of the central frequency point of the initial frequency conversion signal, and the frequency point of the first side lobe is greater than the frequency point of the second side lobe, the position of the pulse signal satisfies the following formula two:
fpulse of light＝-f2+(-f2-(-f1) 2 equation two)
Wherein f isPulse of lightIs the position of the pulse signal, -f1Is a first side lobe frequency point, -f2And the second sidelobe frequency point is obtained.
In another case, as shown in fig. 4, if the first side lobe and the second side lobe are both located on the right side of the center frequency point of the initial frequency converted signal, and the frequency point of the first side lobe is smaller than the frequency point of the second side lobe, the position of the pulse signal satisfies the following formula two:
fpulse of light＝f1+(f2-f1) 2 formula two
Wherein f isPulse of lightFor the position of the pulse signal, f1Is the first side lobe frequency point, f2And the second sidelobe frequency point is obtained.
In practical application, the position of the pulse signal may be located on the left side of the central frequency point of the initial frequency conversion signal, or may be located on the right side of the central frequency point of the initial frequency conversion signal. The number of the pulse signals can be two, and the pulse signals can be simultaneously positioned on the left side and the right side of the central frequency point of the initial variable frequency signal.
It can be understood that, no matter the number of the pulse signals, the position of the pulse signals is in the middle of the first side lobe and the second side lobe, namely, the weakest position of the useless signals, so as to avoid the interference of the inserted pulse signals on the initial frequency conversion signals.
As shown in fig. 6, the embodiment of the present invention further provides a signal identification method, which is applied to a signal receiving device, and can also be applied to a signal identification apparatus in the signal receiving device, including the following steps S301 to S306.
S301, the signal receiving equipment receives a wireless signal.
As one possible implementation, the signal receiving apparatus receives a wireless signal using an antenna.
The wireless signal received by the signal receiving device may be a combined signal amplified by the relay device, or may be an initial signal transmitted by the signal transmitting device.
S302, the signal receiving equipment determines that the wireless signals comprise target variable frequency signals and pulse signals.
The target frequency conversion signal is a signal after frequency conversion.
As a possible implementation manner, the signal receiving device analyzes the received wireless signal to determine whether the wireless signal includes the target variable frequency signal and the pulse signal.
It should be noted that the target frequency-converted signal and the initial signal are homologous signals.
In one case, if the wireless signal includes the target frequency-converted signal and the pulse signal, the following step S303 is performed.
In another case, if the wireless signal does not include the pulse signal, the wireless signal is considered as an interference signal, and the interference signal is discarded without subsequent processing.
It should be noted that, the signal receiving apparatus determines whether the wireless signal includes the pulse signal, and reference may be made to the prior art, which is not described herein again.
On the other hand, after the signal receiving device determines that the wireless signal includes the target frequency conversion signal, the first side lobe frequency point and the second side lobe frequency point of the target frequency conversion signal can be determined, and then the weakest position in the middle of the first side lobe and the second side lobe is determined according to the first side lobe frequency point and the second side lobe frequency point, and then whether a pulse signal exists in the position is determined. The specific implementation manner of determining the position with the weakest signal in this step may refer to the specific description in embodiments S2051 to S2052, and is not described herein again. The difference is that the processed signals are different, the step is the target frequency conversion signal, and the above-mentioned S2051-S2052 are the initial frequency conversion signals.
S303, the signal receiving device determines the first energy value and the second energy value respectively.
The first energy value is used for representing the average energy of the target variable frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal.
As a possible implementation manner, the signal relay device analyzes the target variable frequency signal to obtain a center frequency point, a bandwidth, and a power of each frequency point of the initial variable frequency signal, so as to determine the first energy value.
The specific implementation manner of this step may refer to the following description of the embodiment of the present invention, and is not described herein again.
On the other hand, after the signal relay equipment analyzes the target variable frequency signal, the power of the pulse signal is determined as a second energy value.
In this step, the specific implementation manner of determining the power of the pulse signal may be to determine the power of the pulse signal by analyzing the pulse signal, which may specifically refer to the prior art and is not described herein again.
S304, the signal receiving equipment judges whether the ratio of the second energy value to the first energy value is in a preset range.
As a possible implementation, the signal receiving apparatus determines a ratio of the second energy value to the second energy value, and determines whether the ratio is within a preset range.
It should be noted that the preset range may be preset in the signal receiving device by an operation and maintenance person of the wireless communication system.
For example, the predetermined range may be [ (1-a), (1+ a) ].
Wherein a is a preset signal amplitude deviation value.
It should be noted that the value range of the signal amplitude offset value a may be set in advance in the signal receiving device by an operation and maintenance person.
Illustratively, a may range from (0.05-0.25).
S305, the signal receiving device determines that the wireless signal is a signal amplified by the signal relaying device when the ratio of the second energy value to the first energy value is within a preset range.
As a possible implementation manner, in the case that the signal receiving device determines that the ratio of the second energy value to the first energy value is within the preset range, the signal receiving device determines that the wireless signal is the useful signal amplified by the signal relaying device.
Subsequently, the signal receiving device demodulates the useful signal to obtain the data carried by the useful signal.
S306, the signal receiving equipment determines that the wireless signal is an interference signal under the condition that the ratio of the second energy value to the first energy value is not in a preset range.
As a possible implementation manner, the signal receiving apparatus determines that the wireless signal is an interference signal in a case where it is determined that the ratio of the second energy value to the first energy value is out of a preset range.
Subsequently, the signal receiving apparatus discards the interference signal.
In one design, as shown in fig. 7, the determining the first energy value in S303 provided in the embodiment of the present invention specifically includes the following S3031 to S3032.
S3031, the signal receiving equipment determines the center frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal.
In this step, the specific implementation of determining the first energy value by the signal receiving device may refer to the specific description in S2031 in the foregoing embodiment, and details are not repeated here. The difference is that the object analyzed in this step is the target frequency conversion signal, and the object analyzed in S2031 to S2032 is the initial frequency conversion signal.
S3032, the signal receiving equipment determines a first energy value based on the center frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal.
In this step, the specific implementation manner and formula for the signal receiving device to determine the first energy value may refer to the specific description in S2032 in the foregoing embodiment, and details are not repeated here. The difference is that the first energy value of the target frequency conversion signal is determined in this step, and the third energy value of the initial frequency conversion signal is determined in S2031-S2032.
The embodiment of the invention provides a signal relay method, a signal identification device and a signal identification device, which are applied to a wireless communication environment, when a relay device amplifies an initial signal, a pulse signal for identifying the relay device is added in the initial frequency conversion signal after the frequency conversion processing is carried out on the initial signal, and the power of the pulse signal is the same as the average energy in a unit bandwidth of the initial frequency conversion signal, so that after a signal receiving device receives each wireless signal, after the wireless signal is determined to comprise a target frequency conversion signal and the pulse signal, whether the wireless signal is a useful signal after the amplification processing of the relay device can be judged according to the magnitude relation between a second energy value of the pulse signal and a first energy value of the target frequency conversion signal. Further, the determined useful signals can be subjected to subsequent decoding processing, and the communication quality of both communication parties can be ensured.
The scheme provided by the embodiment of the invention is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiments of the present invention may perform functional module division on the signal relay device according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Fig. 8 is a schematic structural diagram of a signal relay device according to an embodiment of the present invention. The signal relaying means may be located in the signal relaying device described above. As shown in fig. 8, the signal relay apparatus 11 is configured to perform a relay amplification process on the initial signal, for example, to execute the signal relay method shown in fig. 2. Signal relay apparatus 40 includes reception section 401, processing section 402, determination section 403, generation section 404, combining section 405, and transmission section 406.
A receiving unit 401, configured to receive an initial signal. For example, as shown in fig. 2, the receiving unit 401 may be configured to perform S201.
A processing unit 402, configured to perform frequency conversion processing on the initial signal received by the receiving unit 401 to obtain an initial frequency-converted signal. For example, as shown in fig. 2, processing unit 402 may be configured to execute S202.
A determining unit 403, configured to determine a third energy value after acquiring the initial frequency-converted signal, where the third energy value is used to represent an average energy of the initial frequency-converted signal within a unit bandwidth. For example, as shown in fig. 2, the determination unit 403 may be configured to execute S203.
A generating unit 404, configured to generate a pulse signal based on the third energy value determined by the determining unit 403. The power of the pulse signal is a third energy value. For example, as shown in fig. 2, the generating unit 404 may be configured to execute S204.
The determining unit 403 is further configured to determine a position of the pulse signal. For example, as shown in fig. 2, the determination unit 403 may be configured to execute S205.
A combining unit 405, configured to combine the initial frequency-converted signal and the pulse signal based on the position of the pulse signal to generate a combined signal. For example, as shown in fig. 2, the merging unit 405 may be configured to execute S206.
The processing unit 402 is further configured to amplify the combined signal combined by the combining unit 405. For example, as shown in fig. 2, processing unit 402 may be configured to execute S207.
A sending unit 406, configured to send the amplified combined signal to the outside. For example, as shown in fig. 2, the sending unit 406 may be configured to perform S208.
Optionally, as shown in fig. 7, the determining unit 403 provided in the embodiment of the present invention is specifically configured to:
and determining the central frequency point and the bandwidth of the initial frequency conversion signal and the power of each frequency point in the initial frequency conversion signal. For example, as shown in fig. 3, the determination unit 403 may be configured to execute S2031.
And determining a third energy value based on the central frequency point and the bandwidth of the initial variable frequency signal and the power of each frequency point in the initial variable frequency signal. For example, as shown in fig. 3, the determination unit 403 may be configured to execute S2032.
Optionally, as shown in fig. 7, the third energy value provided by the embodiment of the present invention satisfies the following formula:
Figure BDA0002984999960000121
wherein,
Figure BDA0002984999960000122
is a third energy value, f0Is the central frequency point of the initial frequency conversion signal, W is the bandwidth of the initial frequency conversion signal, PcThe power of each frequency point in the initial frequency conversion signal is defined as f, the frequency point of the initial frequency conversion signal is defined as H, and the power of the initial frequency conversion signal is defined as H.
Optionally, as shown in fig. 7, the determining unit 403 provided in the embodiment of the present invention is specifically configured to:
and acquiring a first side lobe frequency point and a second side lobe frequency point of the initial frequency conversion signal. The first side lobe frequency point is the central frequency point of the first side lobe, the second side lobe frequency point is the central frequency point of the second side lobe, and the first side lobe and the second side lobe are positioned at the same side of the central frequency point of the initial frequency conversion signal. For example, as shown in fig. 5, the determination unit 403 may be configured to execute S2051.
And determining the position of the pulse signal based on the first side lobe frequency point and the second side lobe frequency point. For example, as shown in fig. 5, the determination unit 403 may be configured to execute S2052.
Fig. 9 is a schematic structural diagram of a signal identification apparatus according to an embodiment of the present invention. The signal identifying means may be located in the signal receiving apparatus described above. As shown in fig. 9, the signal identifying device 50 is used for determining whether the received wireless signal is a signal amplified by the signal relaying apparatus, for example, for executing the signal identifying method shown in fig. 6. The signal recognition apparatus 50 includes a receiving unit 501 and a determining unit 502.
A receiving unit 501 is configured to receive a wireless signal. For example, as shown in fig. 6, the receiving unit 501 may be configured to perform S301.
The determining unit 502 is configured to determine that the wireless signal received by the receiving unit 501 includes a target frequency conversion signal and a pulse signal. For example, as shown in fig. 6, the determination unit 502 may be configured to perform S302.
The determining unit 502 is further configured to determine a first energy value and a second energy value, respectively. The first energy value is used for representing the average energy of the target variable frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal. For example, as shown in fig. 6, the determining unit 502 may be configured to perform S303.
The determining unit 502 is further configured to determine that the wireless signal is a signal amplified by the signal relaying device when a ratio of the second energy value to the first energy value is within a preset range. For example, as shown in fig. 6, the determination unit 502 may be configured to execute S305.
Optionally, as shown in fig. 9, the determining unit 502 provided in the embodiment of the present invention is specifically configured to:
and determining the central frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal. For example, as shown in fig. 7, the determining unit 502 may be configured to perform S3031.
And determining a first energy value based on the central frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal. For example, as shown in fig. 7, the determining unit 502 may be configured to perform S3032.
In the case of implementing the functions of the integrated modules in the form of hardware, the embodiment of the present invention provides a schematic diagram of a possible structure of the signal relay device in the above embodiment. As shown in fig. 10, a signal relaying apparatus 60 for performing a relaying amplification process on a wireless signal, for example, for performing the signal relaying method shown in fig. 2. The signal relay device 60 includes a processor 601, a memory 602, and a bus 603. The processor 601 and the memory 602 may be connected by a bus 603.
The processor 601 is a control center of the communication apparatus, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 601 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.
For one embodiment, processor 601 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 8.
The memory 602 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
As a possible implementation, the memory 602 may be present separately from the processor 601, and the memory 602 may be connected to the processor 601 via a bus 603 for storing instructions or program code. The processor 601 can implement the resource isolation method provided by the embodiment of the present invention when calling and executing the instructions or program codes stored in the memory 602.
In another possible implementation, the memory 602 may also be integrated with the processor 601.
The bus 603 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
Note that the structure shown in fig. 10 does not constitute a limitation of the signal relay apparatus 60. In addition to the components shown in fig. 10, the signal relay device 60 may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As an example, in conjunction with fig. 8, the functions implemented by the receiving unit 401, the processing unit 402, the determining unit 403, the generating unit 404, the combining unit 405, and the transmitting unit 406 in the signal relaying apparatus are the same as those of the processor 601 in fig. 10.
Optionally, as shown in fig. 10, the signal relay device 60 provided in the embodiment of the present invention may further include a communication interface 604.
A communication interface 604 for connecting with other devices via a communication network. The communication network may be an ethernet network, a radio access network, a Wireless Local Area Network (WLAN), etc. The communication interface 604 may include a receiving unit for receiving data and a transmitting unit for transmitting data.
In one design, in the signal relay device provided in the embodiment of the present invention, the communication interface may be further integrated in the processor.
Fig. 11 shows another hardware configuration of the signal relaying device in the embodiment of the present invention. As shown in fig. 11, the signal relaying device 70 may include a processor 701 and a communication interface 702. The processor 701 is coupled to a communication interface 702.
The functions of the processor 701 may refer to the description of the processor 601 above. The processor 701 also has a memory function, and the function of the memory 602 can be referred to.
The communication interface 702 is used to provide data to the processor 701. The communication interface 702 may be an internal interface of the communication apparatus, or may be an external interface of the communication apparatus (corresponding to the communication interface 604).
It is to be noted that the configuration shown in fig. 11 does not constitute a limitation of the signal relay apparatus 70, and the signal relay apparatus 70 may include more or less components than those shown in fig. 11, or combine some components, or a different arrangement of components, in addition to the components shown in fig. 11.
Meanwhile, the schematic structural diagram of the hardware of the signal receiving device according to the embodiment of the present invention may also refer to the description of the signal relaying device in fig. 10 or fig. 11, which is not described herein again. The difference is that the signal receiving apparatus comprises a processor for performing the steps performed by the signal receiving apparatus in the above-described embodiments.
As an example, in conjunction with fig. 9, the functions implemented by the receiving unit 501 and the determining unit 502 in the signal identifying apparatus are the same as those of the processor of the signal receiving device.
Through the above description of the embodiments, it is clear for a person skilled in the art that, for convenience and simplicity of description, only the division of the above functional units is illustrated. In practical applications, the above function allocation can be performed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer executes each step in the method flow shown in the above method embodiment.
Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the signal relaying method and the signal identifying method in the above-described method embodiments.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), registers, a hard disk, an optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium, in any suitable combination, or as appropriate in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Since the signal relay device, the computer-readable storage medium, and the computer program product in the embodiments of the present invention may be applied to the method described above, for technical effects that can be obtained by the method, reference may also be made to the method embodiments described above, and details of the embodiments of the present invention are not repeated herein.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention.

Claims (15)

1. A signal identification method applied to a signal receiving device, comprising:
receiving a wireless signal, and determining that the wireless signal comprises a target variable frequency signal and a pulse signal;
respectively determining a first energy value and a second energy value; the first energy value is used for representing the average energy of the target variable-frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal;
and under the condition that the ratio of the second energy value to the first energy value is within a preset range, determining that the wireless signal is a signal amplified by the signal relay equipment.
2. The signal identification method of claim 1, wherein determining the first energy value comprises:
determining a central frequency point and a bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal;
and determining the first energy value based on the central frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal.
3. A signal relay method is applied to relay equipment and is characterized by comprising the following steps:
receiving an initial signal, and carrying out frequency conversion processing on the initial signal to obtain an initial frequency conversion signal;
determining a third energy value, wherein the third energy value is used for representing the average energy of the initial variable frequency signal in a unit bandwidth;
generating a pulse signal based on the third energy value; the power of the pulse signal is the third energy value;
determining the position of a pulse signal, and combining the initial variable frequency signal and the pulse signal based on the position of the pulse signal to generate a combined signal;
and amplifying the combined signal, and sending the amplified combined signal outwards.
4. The signal relaying method of claim 3, wherein said determining a third energy value comprises:
determining a central frequency point and a bandwidth of the initial variable frequency signal and the power of each frequency point in the initial variable frequency signal;
and determining the third energy value based on the central frequency point and the bandwidth of the initial variable frequency signal and the power of each frequency point in the initial variable frequency signal.
5. The signal relaying method of claim 4, wherein the third energy value satisfies the following equation:
Figure FDA0002984999950000021
wherein,
Figure FDA0002984999950000022
is said third energy value, f0Is the central frequency point of the initial frequency conversion signal, W is the bandwidth of the initial frequency conversion signal, PcAnd f is the power of each frequency point in the initial frequency conversion signal, f is the frequency point of the initial frequency conversion signal, and H is the power of the initial frequency conversion signal.
6. The signal relaying method of claim 3, wherein said determining the location of the pulse signal comprises:
acquiring a first side lobe frequency point and a second side lobe frequency point of the initial frequency conversion signal; the first side lobe frequency point is a central frequency point of a first side lobe, the second side lobe frequency point is a central frequency point of a second side lobe, and the first side lobe and the second side lobe are positioned on the same side of the central frequency point of the initial frequency conversion signal;
and determining the position of the pulse signal based on the first side lobe frequency point and the second side lobe frequency point.
7. A signal identification device is characterized by comprising a receiving unit and a determining unit;
the receiving unit is used for receiving wireless signals;
the determining unit is configured to determine that the wireless signal received by the receiving unit includes a target variable frequency signal and a pulse signal;
the determining unit is further configured to determine a first energy value and a second energy value respectively; the first energy value is used for representing the average energy of the target variable-frequency signal in a unit bandwidth, and the second energy value is used for representing the power of the pulse signal;
the determining unit is further configured to determine that the wireless signal is a signal amplified by the signal relay device when a ratio of the second energy value to the first energy value is within a preset range.
8. The signal identification device according to claim 7, wherein the determination unit is specifically configured to:
determining a central frequency point and a bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal;
and determining the first energy value based on the central frequency point and the bandwidth of the target variable frequency signal and the power of each frequency point in the target variable frequency signal.
9. A signal relay device is characterized by comprising a receiving unit, a processing unit, a determining unit, a generating unit, a combining unit and a transmitting unit;
the receiving unit is used for receiving an initial signal;
the processing unit is configured to perform frequency conversion processing on the initial signal received by the receiving unit to obtain an initial frequency conversion signal;
the determining unit is configured to determine a third energy value after acquiring the initial frequency-converted signal, where the third energy value is used to represent an average energy of the initial frequency-converted signal within a unit bandwidth;
the generating unit is used for generating a pulse signal based on the third energy value determined by the determining unit; the power of the pulse signal is the third energy value;
the determining unit is further used for determining the position of the pulse signal;
the merging unit is used for merging the initial variable frequency signal and the pulse signal based on the position of the pulse signal so as to generate a merged signal;
the processing unit is further configured to amplify the combined signal combined by the combining unit;
and the sending unit is used for sending the amplified combined signal to the outside.
10. The signal relay device according to claim 9, wherein the determining unit is specifically configured to:
determining a central frequency point and a bandwidth of the initial variable frequency signal and the power of each frequency point in the initial variable frequency signal;
and determining the third energy value based on the central frequency point and the bandwidth of the initial variable frequency signal and the power of each frequency point in the initial variable frequency signal.
11. The signal relay device of claim 10, wherein the third energy value satisfies the following equation:
Figure FDA0002984999950000031
wherein,
Figure FDA0002984999950000032
is said third energy value, f0Is the central frequency point of the initial frequency conversion signal, W is the bandwidth of the initial frequency conversion signal, PcAnd f is the power of each frequency point in the initial frequency conversion signal, f is the frequency point of the initial frequency conversion signal, and H is the power of the initial frequency conversion signal.
12. The signal relay device according to claim 9, wherein the determining unit is specifically configured to:
acquiring a first side lobe frequency point and a second side lobe frequency point of the initial frequency conversion signal; the first side lobe frequency point is a central frequency point of a first side lobe, the second side lobe frequency point is a central frequency point of a second side lobe, and the first side lobe and the second side lobe are positioned on the same side of the central frequency point of the initial frequency conversion signal;
and determining the position of the pulse signal based on the first side lobe frequency point and the second side lobe frequency point.
13. A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the signal identification method of any one of claims 1-2 and the signal relaying method of any one of claims 3-6.
14. A signal receiving apparatus, comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions, which when executed by the signal receiving apparatus, are executed by the processor to cause the signal receiving apparatus to perform the signal identification method of any one of claims 1-2.
15. A signal relay apparatus, characterized by comprising: a processor and a memory; wherein the memory is configured to store one or more programs, the one or more programs including computer-executable instructions, which when executed by the processor, cause the signal relaying device to perform the signal relaying method of any of claims 3-6.
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