CN113114328B - Signal relay method, signal identification method, device and equipment - Google Patents
Signal relay method, signal identification method, device and equipment Download PDFInfo
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- CN113114328B CN113114328B CN202110297886.0A CN202110297886A CN113114328B CN 113114328 B CN113114328 B CN 113114328B CN 202110297886 A CN202110297886 A CN 202110297886A CN 113114328 B CN113114328 B CN 113114328B
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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
- H04B7/15564—Relay station antennae loop interference reduction
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- 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
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- 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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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 demodulating the wireless signal to acquire a Media Access Control (MAC) layer data packet corresponding to the wireless signal; analyzing the MAC layer data packet to determine a preset bit in the MAC layer packet header; the MAC layer packet header is positioned in the MAC layer packet; and under the condition that the preset bit is a preset value, determining that the wireless signal is 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
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 signal 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 sent by signal sending equipment, and demodulating the initial signal to obtain an initial Media Access Control (MAC) layer data packet corresponding to the initial signal; configuring a preset bit in an initial MAC layer data packet into a preset value; generating a target MAC layer data packet based on the configured preset bit, and coding the target MAC layer data packet to generate a target signal corresponding to the target MAC layer data packet; and amplifying the target signal and sending the amplified target signal to the outside.
In a second aspect, a signal identification method is provided, which includes: receiving a wireless signal, and demodulating the wireless signal to acquire a Media Access Control (MAC) layer data packet corresponding to the wireless signal; analyzing the MAC layer data packet to determine a preset bit in the MAC layer packet header; the MAC layer packet header is positioned in the MAC layer packet; and under the condition that the preset bit is a preset value, determining that the wireless signal is 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 configuring unit, and a transmitting unit; a receiving unit, configured to receive an initial signal sent by a signal sending device; the processing unit is used for demodulating the initial signal received by the receiving unit to acquire an initial Media Access Control (MAC) layer data packet corresponding to the initial signal; a configuration unit, configured to configure a preset bit in an initial MAC layer packet as a preset value; the processing unit is also used for generating a target MAC layer data packet based on the configured preset bit; the processing unit is further used for encoding the target MAC layer data packet to generate a target signal corresponding to the target MAC layer data packet; the processing unit is also used for amplifying the target signal;
and the sending unit is used for sending the target signal amplified by the processing unit to the outside.
In a fourth aspect, a signal identification apparatus is provided, which includes a receiving unit, a processing unit, and a determining unit; a receiving unit for receiving a wireless signal; the processing unit is used for demodulating the wireless signal received by the receiving unit to acquire a Medium Access Control (MAC) layer data packet corresponding to the wireless signal; the processing unit is further configured to parse the MAC layer packet to determine a preset bit in the MAC layer packet header; the MAC layer packet header is positioned in the MAC layer packet; and the determining unit is used for determining the wireless signal to be the signal amplified by the signal relay equipment under the condition that the preset bit is a preset value.
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 a signal relaying method as in the first aspect or a 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 relay equipment, which are applied to a wireless communication environment, wherein when the relay equipment amplifies an initial signal, the relay equipment demodulates the initial signal and modifies the value of a preset bit in an MAC data packet obtained after demodulation, so that after the signal receiving equipment receives each wireless signal, after demodulating the wireless signal and acquiring the MAC layer data packet, whether the wireless signal is a useful signal amplified by the signal relay equipment can be judged according to whether the preset bit in the MAC layer data packet is a preset value or not. Furthermore, the data in the MAC layer data packet can be analyzed, 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 flow chart of a signal relaying method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a data format of an initial MAC layer header according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of 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 first flowchart illustrating a signal identification method according to an embodiment of the present invention;
fig. 9 is a schematic flow chart of a signal identification method according to an embodiment of the present invention;
fig. 10 is a 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 identification apparatus according to an embodiment of the present invention;
fig. 12 is a first schematic structural diagram of a signal relay device according to an embodiment of the present invention;
fig. 13 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 denote any order or importance, but rather the terms "first," "second," and the like do not denote any order or importance.
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 apparatus 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 sent by the signal relaying device 11, and can also be used for receiving the homologous interference signal sent by the signal sending 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 (which 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 device 11 may also demodulate the wireless signal to obtain an MAC layer packet during the process of amplifying the received wireless signal, and modify the value of the preset bit in the MAC layer packet.
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, the signal relaying method provided in the embodiment of the present invention includes the following steps S201 to S207:
s201, the signal relay equipment receives the initial signal sent by the signal sending equipment.
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 transmitting apparatus is an apparatus in a base station, the initial signal is a downlink signal, and in the case where the signal transmitting apparatus is a UE, the initial signal is an uplink signal.
S202, the signal relay equipment demodulates the initial signal to obtain an initial MAC layer data packet corresponding to the initial signal.
As one possible implementation, the signal relay device performs a demodulation operation on the initial signal to obtain an initial Media Access Control (MAC) layer packet carried in the initial signal.
It should be noted that the initial MAC layer packet is a packet on the MAC layer on the data link layer.
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.
S203, the signal relay device configures a preset bit in the initial MAC layer packet to be a preset value.
As a possible implementation manner, the signal relay device parses the initial MAC layer packet to obtain a preset bit in the initial MAC layer packet, and configures the preset bit as a preset value.
It should be noted that the preset bit is located in a fixed position of the initial MAC layer packet header of the initial MAC layer packet. The preset value can be set and stored in the signal relay device and the signal receiving device in advance by operation and maintenance personnel of the wireless communication system.
For example, the preset value may be 1, the default value of the preset bit included in the initial MAC layer data is 0, and the value of the preset bit after configuration is 1.
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 target MAC layer data packet based on the configured preset bit.
As a possible implementation manner, the signal relay device generates a header of the target MAC layer based on the configured preset bits, and generates the target MAC layer based on the header of the target MAC layer.
The specific implementation manner of this step may refer to the subsequent description of the embodiment of the present invention, and is not described herein again.
S205, the signal relay equipment encodes the target MAC layer data packet to generate a target signal corresponding to the target MAC layer data packet.
As a possible implementation, the signal relay device encapsulates the target MAC packet to obtain a target physical layer packet, and encodes the MAC layer packet to generate a target signal including the target physical layer packet.
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 S206, the signal relay equipment amplifies the target signal.
As a possible implementation manner, the signal relay apparatus performs amplification processing on the combined signal by using a power amplifier therein to generate an amplified target signal.
And S207, the signal relay equipment sends the amplified target signal to the outside.
As a possible implementation, the signal relay apparatus transmits the target signal after the amplification processing to the signal receiving apparatus by using its antenna.
In one design, in order to obtain the initial MAC layer packet, as shown in fig. 3, S202 provided in the embodiment of the present invention specifically includes following S2021-S2022.
S2021, the signal relay device demodulates the initial signal to obtain an initial physical layer packet corresponding to the initial signal.
As a possible implementation manner, the signal relay device performs a demodulation operation on the initial signal to obtain the physical layer packet carried in the initial signal.
S2022, the signal relay device parses the initial physical layer packet to obtain an initial MAC layer packet.
As a possible implementation manner, the signal relay device performs a parsing operation on the initial physical layer packet to obtain a MAC layer packet included in the initial physical layer packet.
It is to be understood that, in one case, the transport blocks included in the initial physical layer packet are the initial MAC packet.
It should be noted that the initial physical layer packet includes a transport data block and also includes a Cyclic Redundancy Check (CRC) code.
In one design, in order to configure preset bits in an initial MAC layer packet, as shown in fig. 4, S203 provided in the embodiment of the present invention specifically includes the following S2031 to S2033.
S2031, the signal relay equipment analyzes the MAC layer packet to obtain an initial MAC layer packet header.
As a possible implementation manner, the signal relay device performs parsing operation on the MAC layer packet to obtain an initial MAC layer packet header and a MAC sub-Protocol Data Unit (SDU).
It should be noted that the initial MAC layer packet includes a MAC Protocol Data Unit (PDU) transmission Data block, where the MAC PDU transmission Data block includes a plurality of MAC SDUs, and each MAC SDU corresponds to a MAC layer packet header.
S2032, the signal relay device determines that the first field of the initial MAC layer header is a preset bit.
As a possible implementation manner, after acquiring the initial MAC layer packet header, the signal relay device analyzes the acquired initial MAC layer packet header, and determines that a field of a first bit in the initial MAC layer packet header is a preset bit.
Fig. 5 shows various data format diagrams of an initial MAC layer header. Illustratively, as shown in fig. 5, the initial MAC layer packet header includes a plurality of reserved bits R, a logical channel identifier LCID, a MAC SDU length L, and a byte length F. And the reserved bit R of the first field in the initial MAC layer packet header is a preset bit.
It should be noted that the reserved bit R is a single bit. The logical channel identifier is 6 bits and is used for defining MAC SDU, MAC CE type and padding in the logical channel, and each MAC layer packet header only has one logical channel identifier. The length L of the MAC SDU reflects the length of the MAC SDU, which depends on the bit number of the MAC CE, and each MAC layer packet header only has one length L of the MAC SDU. The byte length F is single bit, each MAC layer packet header only has one byte length F, when the numerical value of F is 0, the byte length of the MAC SDU is 8bit, and when the numerical value of F is 1, the byte length of the MAC SDU is 16bit.
S2033, the signal relay apparatus configures the value of the preset bit to a preset value.
As a possible implementation manner, after determining the preset bit, the signal relay device modifies a default value of the preset bit to a preset value.
Illustratively, the signal relay device modifies a default value 0 of a preset bit of a first bit in the MAC layer packet header to a preset value 1.
In one design, in order to generate the target MAC layer packet, as shown in fig. 6, S204 provided in the embodiment of the present invention specifically includes the following S2041 to S2042.
S2041, the signal relay equipment generates a target MAC layer packet header based on the configured preset bits.
And the target MAC layer packet header comprises the configured preset bit.
As a possible implementation manner, the signal relay device encapsulates the configured preset bits and other data except the preset bits in the initial MAC layer packet header to generate a target MAC layer packet header.
S2042, the signal relay device generates a destination MAC layer packet based on the destination MAC layer packet header.
The target MAC layer packet includes a target MAC layer packet header.
As a possible implementation manner, the signal relay device encapsulates the MAC SDU in the initial MAC layer packet and the target MAC layer packet header to generate the target MAC layer packet.
In one design, to generate the target signal, as shown in fig. 7, S205 provided in the embodiment of the present invention specifically includes following S2051-S2052.
S2051, the signal relay apparatus encodes the target MAC layer packet to generate a target physical layer packet corresponding to the target signal.
Wherein, the target physical layer packet comprises the target MAC layer packet.
As a possible implementation, the signal relay device encapsulates the CRC code included in the target MAC layer packet and the initial physical layer packet to generate a target physical layer packet.
S2052, the signal relay device modulates the target physical layer packet to generate a target signal.
As a possible implementation manner, the signal relay device modulates the target physical layer packet to generate a target signal for carrying the target physical layer packet.
As shown in fig. 8, an embodiment of the present invention further provides a signal identification method, which is applied to a signal receiving device, and may 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 target signal amplified by the signal relaying device, or may be an initial signal transmitted by the signal transmitting device.
S302, the signal receiving device demodulates the wireless signal to obtain a Medium Access Control (MAC) layer data packet corresponding to the wireless signal.
The specific implementation manner of this step may refer to S202 and S2021 to S2022 provided in this embodiment of the present invention, which is not described herein again. The difference is that the main execution of this step is the signal receiving device, the object of demodulation is any wireless signal, the main execution of S202 and S2021-S2022 is the signal relaying device, and the object of demodulation is the initial signal.
S303, the signal receiving device parses the MAC layer packet to determine a preset bit in the MAC layer packet header.
Wherein, the MAC layer packet header is positioned in the MAC layer packet.
As a possible implementation manner, the signal receiving device parses the MAC layer packet, and determines a preset bit from a preset position of the MAC layer packet header.
It should be noted that the preset position of the preset bit in the MAC layer packet header may be preset and stored in the signal receiving device by an operation and maintenance person.
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.
S304, the signal receiving equipment judges whether the preset bit is a preset value or not.
As a possible implementation manner, the value of the preset bit is determined, and whether the value of the preset bit is the preset value is determined.
S305, the signal receiving device determines that the wireless signal is a signal amplified by the signal relaying device when the preset bit is a preset value.
As a possible implementation manner, the signal receiving device determines that the received wireless signal is a signal amplified by the signal relaying device, when determining that the preset bit is the preset value.
Subsequently, the signal receiving device decodes the data in the MAC layer packet by layers above the MAC layer.
S306, the signal receiving equipment determines that the wireless signal is an interference signal under the condition that the preset bit is not a preset value.
As a possible implementation manner, the signal receiving device determines that the received wireless signal is an interference signal when the preset bit is determined to be the preset value.
Subsequently, the signal receiving apparatus discards the MAC layer packet.
In one design, in order to determine the preset bits in the MAC layer packet header, as shown in fig. 9, S303 provided in the embodiment of the present invention specifically includes following S3031 to S3032.
S3031, the signal receiving device parses the MAC layer packet to obtain a MAC layer packet header.
The specific implementation manner of this step may refer to S2031 provided in this embodiment of the present invention, and details are not described here. The difference is that the execution subject of this step is the signal receiving device, the object of analysis is the MAC layer packet included in any wireless signal, the execution subject in S203 is the signal relaying device, and the object of analysis is the initial MAC layer packet in the initial signal.
S3032, the signal receiving device determines that the first field of the MAC layer packet header is a preset bit.
The specific implementation manner of this step may refer to S2032 provided in this embodiment of the present invention, and details are not described here. The difference is that the execution subject of this step is the signal receiving apparatus, the object of analysis is the MAC layer header included in any wireless signal, the execution subject in S2032 is the signal relaying apparatus, and the object of analysis is the initial MAC layer header in the initial signal.
The embodiment of the invention provides a signal relay method, a signal identification device and a signal relay device, which are applied to a wireless communication environment, wherein when a relay device amplifies an initial signal, the relay device demodulates the initial signal and modifies a value of a preset bit in an MAC data packet obtained after demodulation, so that after a signal receiving device receives each wireless signal, after demodulating the wireless signal and acquiring the MAC data packet, whether the wireless signal is a useful signal amplified by the signal relay device can be judged according to whether the preset bit in the MAC data packet is the preset value or not. Furthermore, the data in the MAC layer data packet can be analyzed, 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 components 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. 10 is a schematic structural diagram of a signal relay apparatus 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. 10, the signal relay apparatus 40 is configured to perform a relay amplification process on the initial signal, for example, to execute the signal relay method shown in fig. 2. This signal relay apparatus 40 includes a reception unit 401, a processing unit 402, a configuration unit 403, and a transmission unit 404.
A receiving unit 401, configured to receive an initial signal sent by the signal sending apparatus. For example, as shown in fig. 2, the receiving unit 401 may be configured to perform S201.
A processing unit 402, configured to demodulate the initial signal received by the receiving unit 401 to obtain an initial MAC layer packet corresponding to the initial signal. For example, as shown in fig. 2, processing unit 402 may be configured to execute S202.
A configuring unit 403, configured to configure a preset bit in the initial MAC layer packet to be a preset value. For example, as shown in fig. 2, the configuration unit 403 may be used to execute S203.
The processing unit 402 is further configured to generate a target MAC layer packet based on the configured preset bits. For example, as shown in fig. 2, processing unit 402 may be configured to execute S204.
The processing unit 402 is further configured to encode the target MAC layer packet to generate a target signal corresponding to the target MAC layer packet. For example, as shown in fig. 2, the processing unit 402 may be configured to execute S205.
The processing unit 402 is further configured to perform amplification processing on the target signal. For example, as shown in fig. 2, the processing unit 402 may be configured to execute S206.
A sending unit 404, configured to send the target signal amplified by the processing unit 402 to the outside. For example, as shown in fig. 2, the sending unit 404 may be configured to execute S207.
Optionally, as shown in fig. 10, the processing unit 402 provided in the embodiment of the present invention is specifically configured to:
and demodulating the initial signal to obtain an initial physical layer data packet corresponding to the initial signal. For example, as shown in fig. 3, processing unit 402 may be configured to perform S2021.
And analyzing the initial physical layer data packet to obtain an initial MAC layer data packet. For example, as shown in fig. 3, processing unit 402 may be configured to perform S2022.
Optionally, as shown in fig. 10, the configuration unit 403 provided in the embodiment of the present invention is specifically configured to:
and analyzing the MAC layer packet to obtain an initial MAC layer packet header. For example, as shown in fig. 4, configuration unit 403 may be used to execute S2031.
Determining a first field of an initial MAC layer packet header as a preset bit, and configuring the value of the preset bit as a preset value. For example, as shown in FIG. 4, configuration unit 403 may be used to execute S2032-S2033.
Optionally, as shown in fig. 10, the processing unit 402 provided in the embodiment of the present invention is specifically configured to:
and generating a target MAC layer packet header based on the configured preset bits. The target MAC layer packet header comprises a configured preset bit. For example, as shown in fig. 6, the processing unit 402 may be configured to execute S2041.
And generating a target MAC layer data packet based on the target MAC layer packet header. For example, as shown in fig. 6, the processing unit 402 may be configured to execute S2042.
Optionally, as shown in fig. 10, the processing unit 402 provided in the embodiment of the present invention is specifically configured to:
and encoding the target MAC layer data packet to generate a target physical layer data packet corresponding to the target signal. For example, as shown in fig. 7, the processing unit 402 may be configured to perform S2051.
The target physical layer packet is modulated to generate a target signal. For example, as shown in fig. 7, the processing unit 402 may be configured to perform S2052.
Fig. 11 is a schematic structural diagram of a signal identification device 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. 11, the signal identification device 50 is used for determining whether the received wireless signal is a signal amplified by the signal relay apparatus, for example, for executing the signal identification method shown in fig. 8. The signal recognition apparatus 50 includes a receiving unit 501, a processing unit 502, and a determining unit 503.
A receiving unit 501 is configured to receive a wireless signal. For example, as shown in fig. 8, the receiving unit 501 may be configured to perform S301.
The processing unit 502 is configured to demodulate the wireless signal received by the receiving unit 501 to obtain a MAC layer packet corresponding to the wireless signal. For example, as shown in fig. 8, the processing unit 502 may be configured to execute S302.
The processing unit 502 is further configured to parse the MAC layer packet to determine a preset bit in a header of the MAC layer packet. The MAC layer packet header is positioned in the MAC layer packet. For example, as shown in fig. 8, the processing unit 502 may be configured to execute S303.
A determining unit 503, configured to determine that the wireless signal is a signal amplified by the signal relaying device if the preset bit is a preset value. For example, as shown in fig. 8, the determining unit 503 may be configured to execute S305.
Optionally, as shown in fig. 11, the processing unit 502 provided in the embodiment of the present invention is specifically configured to:
and analyzing the MAC layer data packet to obtain the MAC layer packet header. For example, as shown in fig. 9, the processing unit 502 may be configured to execute S3031.
And determining a first field of the MAC layer packet header as a preset bit. For example, as shown in fig. 9, the processing unit 502 may be configured to execute 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. 12, 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 exist separately from the processor 601, and the memory 602 may be connected to the processor 601 through a bus 603 for storing instructions or program codes. 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. 12, but that does not indicate only one bus or one type of bus.
Note that the configuration shown in fig. 12 does not constitute a limitation of the signal relay apparatus 60. In addition to the components shown in fig. 12, 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 connection with fig. 10, the functions implemented by the receiving unit 401, the processing unit 402, the configuration unit 403, and the transmitting unit 404 in the signal relaying apparatus are the same as those of the processor 601 in fig. 12.
Optionally, as shown in fig. 12, 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. 13 shows another hardware configuration of the signal relaying device in the embodiment of the present invention. As shown in fig. 13, 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 can 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. 13 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. 13, or combine some components, or a different arrangement of components, in addition to the components shown in fig. 13.
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. 12 or fig. 13, 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 connection with fig. 11, the functions implemented by the receiving unit 501, the processing unit 502, and the determining unit 503 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 computer executes the instructions, the computer executes each step in the method flow shown in the foregoing 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 of the foregoing. 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, optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), optical storage devices, magnetic storage devices, or any other form of computer-readable storage medium known in the art, in any suitable combination of the above, or any other form of computer-readable storage medium known 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 (11)
1. A signal identification method applied to a signal receiving device, comprising:
receiving a wireless signal, and demodulating the wireless signal to acquire a Media Access Control (MAC) layer data packet corresponding to the wireless signal;
analyzing the MAC layer data packet to determine a preset bit in an MAC layer packet header; the MAC layer header is located in the MAC layer packet;
determining the value of the preset bit, and judging whether the value of the preset bit is a preset value or not; determining the wireless signal to be a signal amplified by signal relay equipment under the condition that the preset bit is a preset value, wherein the preset bit is a reserved bit of a first field in an initial MAC layer packet header, and the preset value is a value of the preset bit after the relay equipment is configured;
the acquiring a Media Access Control (MAC) layer packet corresponding to the wireless signal includes:
demodulating the wireless signal to obtain a physical layer data packet corresponding to the wireless signal;
analyzing the physical layer data packet to obtain the MAC layer data packet;
the parsing the MAC layer packet to determine a preset bit in a MAC layer packet header includes:
analyzing the MAC layer packet to obtain the MAC layer packet header; wherein, the MAC layer packet head is positioned in the MAC layer packet; determining a preset bit from a preset position of an MAC layer packet header;
the initial MAC layer packet header comprises a plurality of reserved bits R, a logical channel identifier LCID, a MAC SDU length L and a byte length F; the reserved bit is single bit, the logical channel identifier is 6bit, and the logical channel identifier is used for defining MAC SDU, MAC CE type and padding in the logical channel, and each MAC layer packet header only has one logical channel identifier; the length L of the MAC SDU reflects the length of the MAC SDU, the L depends on the bit number of the MAC CE, and each MAC layer packet header only has one length L of the MAC SDU; the byte length F is single bit, each MAC layer packet header only has one byte length F, when the value of F is 0, the byte length of the MAC SDU is 8 bits, and when the value of F is 1, the byte length of the MAC SDU is 16 bits.
2. A signal relay method is applied to signal relay equipment and is characterized by comprising the following steps:
receiving an initial signal sent by a signal sending device, and demodulating the initial signal to obtain an initial Media Access Control (MAC) layer data packet corresponding to the initial signal;
configuring a preset bit in the initial MAC layer data packet into a preset value;
generating a target MAC layer data packet based on the configured preset bit, and encoding the target MAC layer data packet to generate a target signal corresponding to the target MAC layer data packet;
amplifying the target signal, and sending the amplified target signal outwards;
the demodulating the initial signal to obtain an initial MAC layer packet corresponding to the initial signal includes:
demodulating the initial signal to obtain an initial physical layer data packet corresponding to the initial signal;
analyzing the initial physical layer data packet to obtain the initial MAC layer data packet;
configuring the preset bits in the initial MAC layer packet to be preset values, including:
analyzing the MAC layer packet to obtain an initial MAC layer packet header;
determining a first field of the initial MAC layer packet header as the preset bit, and configuring the value of the preset bit as the preset value;
the initial MAC layer packet header comprises a plurality of reserved bits R, a logical channel identifier LCID, an MAC SDU length L and a byte length F; the reserved bit is single bit, the logical channel identifier is 6bit, and the logical channel identifier is used for defining MAC SDU, MAC CE type and padding in the logical channel, and each MAC layer packet header only has one logical channel identifier; the length L of the MAC SDU reflects the length of the MAC SDU, the L depends on the bit number of the MAC CE, and each MAC layer packet header only has one length L of the MAC SDU; the byte length F is single bit, each MAC layer packet header only has one byte length F, when the value of F is 0, the byte length of the MAC SDU is 8 bits, and when the value of F is 1, the byte length of the MAC SDU is 16 bits.
3. The signal relaying method of claim 2, wherein the generating the target MAC layer packet based on the configured preset bits comprises:
generating a target MAC layer packet header based on the configured preset bit; the target MAC layer packet header comprises the configured preset bit;
and generating the target MAC layer packet based on the target MAC layer packet header.
4. The signal relaying method of claim 2, wherein said encoding the destination MAC layer packet to generate the destination signal corresponding to the destination MAC layer packet comprises:
encoding the target MAC layer data packet to generate a target physical layer data packet corresponding to the target signal;
modulating the target physical layer packet to generate the target signal.
5. A signal identification device is characterized by comprising a receiving unit, a processing unit and a determining unit;
the receiving unit is used for receiving wireless signals;
the processing unit is configured to demodulate the wireless signal received by the receiving unit to obtain a MAC layer packet corresponding to the wireless signal;
the processing unit is further configured to parse the MAC layer packet to determine a preset bit in an MAC layer packet header; the MAC layer packet header is located in the MAC layer packet;
the determining unit is configured to determine a value of the preset bit, and determine whether the value of the preset bit is a preset value; determining that the wireless signal is a signal amplified by signal relay equipment under the condition that the preset bit is a preset value, wherein the preset bit is a reserved bit of a first field in an initial MAC layer packet header, and the preset value is a value of the preset bit after the relay equipment is configured;
the processing unit is specifically configured to:
analyzing the MAC layer packet to obtain the MAC layer packet header;
determining the first field of the MAC layer packet header as the preset bit
The processing unit is further configured to parse the MAC layer packet to obtain the MAC layer packet header; wherein, the MAC layer packet header is positioned in the MAC layer packet; determining a preset bit from a preset position of an MAC layer packet header; the initial MAC layer packet header comprises a plurality of reserved bits R, a logical channel identifier LCID, a MAC SDU length L and a byte length F; the reserved bit is single bit, the logical channel identifier is 6bit, and the logical channel identifier is used for defining MAC SDU, MAC CE type and padding in the logical channel, and each MAC layer packet header only has one logical channel identifier; the length L of the MAC SDU reflects the length of the MAC SDU, the L depends on the bit number of the MAC CE, and each MAC layer packet header only has one length L of the MAC SDU; the byte length F is single bit, each MAC layer packet header only has one byte length F, when the numerical value of F is 0, the byte length of the MAC SDU is 8bit, and when the numerical value of F is 1, the byte length of the MAC SDU is 16bit.
6. A signal relay device is characterized by comprising a receiving unit, a processing unit, a configuration unit and a transmitting unit;
the receiving unit is used for receiving an initial signal sent by the signal sending equipment;
the processing unit is configured to demodulate the initial signal received by the receiving unit to obtain an initial MAC layer packet corresponding to the initial signal;
the configuration unit is configured to configure a preset bit in the initial MAC layer packet as a preset value;
the processing unit is further configured to generate a target MAC layer packet based on the configured preset bit;
the processing unit is further configured to encode the target MAC layer packet to generate a target signal corresponding to the target MAC layer packet;
the processing unit is further used for amplifying the target signal;
the sending unit is used for sending the target signal amplified by the processing unit to the outside;
the processing unit is specifically configured to:
demodulating the initial signal to obtain an initial physical layer data packet corresponding to the initial signal;
analyzing the initial physical layer data packet to obtain the initial MAC layer data packet;
the configuration unit is specifically configured to:
analyzing the MAC layer packet to obtain an initial MAC layer packet header;
determining a first field of the initial MAC layer packet header as the preset bit, and configuring the value of the preset bit as the preset value; the initial MAC layer packet header comprises a plurality of reserved bits R, a logical channel identifier LCID, a MAC SDU length L and a byte length F; the reserved bit is single bit, the logical channel identifier is 6bit, and the logical channel identifier is used for defining MAC SDU, MAC CE type and padding in the logical channel, and each MAC layer packet header only has one logical channel identifier; the length L of the MAC SDU reflects the length of the MAC SDU, the L depends on the bit number of the MAC CE, and each MAC layer packet header only has one length L of the MAC SDU; the byte length F is single bit, each MAC layer packet header only has one byte length F, when the value of F is 0, the byte length of the MAC SDU is 8 bits, and when the value of F is 1, the byte length of the MAC SDU is 16 bits.
7. The signal relay device according to claim 6, wherein the processing unit is specifically configured to:
generating a target MAC layer packet header based on the configured preset bit; the target MAC layer packet header comprises the configured preset bit;
and generating the target MAC layer packet based on the target MAC layer packet header.
8. The signal relay device according to claim 6, wherein the processing unit is specifically configured to:
encoding the target MAC layer data packet to generate a target physical layer data packet corresponding to the target signal;
modulating the target physical layer packet to generate the target signal.
9. 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 claim 1 and the signal relaying method of any one of claims 2-4.
10. 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 that, when executed by the signal receiving apparatus, cause the signal receiving apparatus to perform the signal identification method of claim 1 when the processor executes the computer-executable instructions stored by the memory.
11. 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 2-4.
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| CN110650550B (en) * | 2019-09-24 | 2021-05-07 | 展讯通信（上海）有限公司 | Data transmission method, UE and computer readable storage medium |
| JP2020191672A (en) * | 2020-08-07 | 2020-11-26 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Relay transmission method and device |
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| CN101926215A (en) * | 2008-01-25 | 2010-12-22 | 高通股份有限公司 | Method and apparatus for channel identification in wireless communication system |
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