CN110831176B - Signal sending method, signal detection method, device and base station - Google Patents
Signal sending method, signal detection method, device and base station Download PDFInfo
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Abstract
The invention provides a signal sending method, a signal detection method, a device and a base station, wherein the method comprises the following steps: determining a target frequency domain position for transmitting a target signal; transmitting the target signal at the determined target frequency domain location; the base station can select the frequency domain position of the target signal and send the target signal at the selected frequency domain position, and the mode of selecting the frequency domain position by the base station aiming at the target signal does not increase excessive detection complexity for the detection of the base station on the basis of reserving enough spectrum use flexibility for the base station.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal sending method, a signal detecting method, a device, and a base station.
Background
In a TDD (Time Division duplex) network, remote base station interference becomes a persistent problem in the system. The main meteorological reasons such as humidity and temperature cause the atmosphere refractive index to have abnormal changes, so that the downlink transmission of the base station interfered by the super-long distance is interfered by the uplink transmission of the interfered base station after the propagation delay, as shown in fig. 1.
The prior art does not have a standardized sequential transmission mode to assist the interference detection of the remote base station of the TDD network. In an implementation-based approach, such as for an LTE TDD system, one achievable way is to transmit the sequence detected for base station interference identification at the system full bandwidth. For a 5G NR (new air interface) system, because the system bandwidth is large and the system bandwidth is flexible to use, if a full-bandwidth method is continuously used to transmit a sequence for identifying and detecting interference of a base station, the sequence overhead is large, and the use efficiency of a system frequency spectrum is reduced.
One way to reduce overhead is to allow the network to send sequences for base station interference identification detection over a portion of the bandwidth. If the protocol specifies that the sequence is transmitted by using a fixed frequency domain position, the frequency spectrum using mode of the system is greatly limited and is not flexible. At present, 5G systems have allowed different base stations to select synchronization signals used by them, that is, the frequency domain positions of the synchronization signals of different base stations may be different; in addition, the 5G system has allowed different base stations to select the bandwidth used by the base stations to transmit downlink data to users, that is, the frequency domain locations used by different base stations to transmit downlink data information may be different. If the sequence is transmitted in a manner fixed in advance by a protocol, there is a possibility that the fixed frequency domain position of the sequence may be different from the frequency domain position used by the system for transmitting the synchronization signal and/or the data information, which may cause system overhead due to the sequence transmission and cause inaccurate interference information due to the different frequency domain positions of the sequence transmission and the data transmission.
Disclosure of Invention
The invention aims to provide a signal sending method, a signal detection device and a base station, and aims to solve the problem that a sending mode of a signal for interference detection or identification in the prior art is not suitable for a system with large system bandwidth and flexible system bandwidth use.
In order to solve the above problem, an embodiment of the present invention provides a signal sending method, applied to a base station, including:
determining a target frequency domain position for transmitting a target signal;
and transmitting the target signal at the determined target frequency domain position.
The target signal is a signal used for detecting or identifying interference between base stations.
Wherein the target frequency domain position is:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Wherein the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Wherein the certain synchronization signal grid is:
one of all synchronization signal grids included in a carrier or frequency band in which the target signal is located;
or, one synchronization signal grid in a synchronization signal grid set of all synchronization signal grid sets contained in a carrier or frequency band in which the target signal is located.
Wherein the method further comprises:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
The embodiment of the invention also provides a signal detection method, which is applied to a base station and comprises the following steps:
determining a frequency domain position where a target signal may exist;
detecting the target signal at the determined one or more frequency domain locations.
The target signal is a signal used for detecting or identifying interference between base stations.
Wherein the determining the frequency domain position where the target signal may exist comprises:
determining a frequency domain position where the target signal possibly exists according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
determining, based on preconfiguration, a frequency domain location where the target signal may exist; or,
according to the specification of a protocol, determining the possible frequency domain position of the target signal.
Wherein the target frequency domain position is:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Wherein the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Wherein the certain synchronization signal grid is:
one of all synchronization signal grids included in a carrier or frequency band in which the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Wherein the method further comprises:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
The embodiment of the present invention further provides a signal sending apparatus, applied to a base station, including:
the device comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a target frequency domain position for sending a target signal;
and the sending module is used for sending the target signal on the determined target frequency domain position.
The embodiment of the invention also provides a base station, which comprises a processor and a transceiver, wherein the processor is used for executing the following processes:
determining a target frequency domain position for transmitting a target signal;
the transceiver is used for executing the following processes:
and transmitting the target signal at the determined target frequency domain position.
The target signal is a signal used for detecting or identifying interference between base stations.
Wherein the target frequency domain position is:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position of a certain synchronous signal grid contained in a carrier wave or a frequency band where the target signal is positioned.
Wherein the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Wherein the certain synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Wherein the processor is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band in which the target signal is positioned according to a mode predefined by a protocol.
The embodiment of the invention also provides a signal detection device, which is applied to a base station and comprises the following components:
the second determining module is used for determining the frequency domain position where the target signal possibly exists;
a detection module for detecting the target signal at the determined one or more frequency domain locations.
The embodiment of the invention also provides a base station, which comprises a processor and a transceiver, wherein the processor is used for executing the following processes:
determining a frequency domain position where a target signal may exist;
detecting the target signal at the determined one or more frequency domain locations.
The target signal is a signal used for detecting or identifying interference between base stations.
Wherein the processor is further configured to:
determining a frequency domain position where the target signal possibly exists according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
determining, based on preconfiguration, a frequency domain location where the target signal may exist; or,
according to the specification of the protocol, the frequency domain position where the target signal possibly exists is determined.
Wherein the target frequency domain position is:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Wherein the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Wherein the certain synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Wherein the processor is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is configured to implement, when executed by a processor, the steps in the signal sending method as described above; alternatively, the program implements the steps in the signal detection method as described above when executed by a processor.
The technical scheme of the invention at least has the following beneficial effects:
in the signal transmission method, the signal detection device and the base station according to the embodiments of the present invention, the base station may select a frequency domain position at which the base station transmits a target signal and transmit the target signal at the selected frequency domain position, and the base station may select the frequency domain position for the target signal without adding too much detection complexity to the detection of the base station on the basis of leaving enough spectrum use flexibility for the base station.
Drawings
Fig. 1 is a schematic diagram illustrating interference between base stations according to the prior art;
fig. 2 is a flowchart illustrating steps of a signal transmission method according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating steps of a signal detection method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal transmitting apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a signal detection apparatus according to an embodiment of the present invention.
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, an embodiment of the present invention provides a signal sending method, applied to a base station, including:
and step 22, transmitting the target signal at the determined target frequency domain position.
In the embodiment of the invention, a base station selects a target frequency domain position for sending a target signal according to the related information of the target signal; wherein the related information of the target signal at least comprises: bandwidth occupied by the target signal and/or information of the carrier carrying the target signal.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
As an embodiment, the target frequency domain position is:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position of a certain synchronous signal grid contained in a carrier wave or a frequency band where the target signal is positioned.
Preferably, the one synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, one synchronization signal grid in a synchronization signal grid set of all synchronization signal grid sets contained in a carrier or frequency band in which the target signal is located.
As a preferred embodiment, the signal sending method provided in the embodiment of the present invention further includes: and determining all synchronous signal grid subsets contained in the carrier or frequency band in which the target signal is positioned according to a mode predefined by a protocol.
Preferably, the one synchronization signal grid is: a synchronization signal grid having a corresponding relationship with a frequency band in which the bandwidth occupied by the target signal is located; i.e. the synchronization signal grid has a correspondence with the frequency bands, which correspondence may be determined in a manner predefined based on the protocol. And the base station determines the synchronous signal grid which corresponds to the frequency band of the bandwidth occupied by the target signal as the certain synchronous signal grid according to the corresponding relation between the synchronous signal grid and the frequency band.
Taking the above example as a preferred embodiment, the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the subcarrier which is positioned at the middlest of all frequency domain values in all frequency domain subcarriers occupied by the target signal.
In summary, in the embodiments of the present invention, the base station may select the frequency domain position where the base station transmits the target signal and transmit the target signal at the selected frequency domain position, and the manner in which the base station selects the frequency domain position for the target signal does not increase too much detection complexity for the detection of the base station on the basis of leaving enough spectrum usage flexibility for the base station.
As shown in fig. 3, an embodiment of the present invention further provides a signal detection method applied to a base station, including:
in step 31, the frequency domain position where the target signal may exist is determined.
And step 32, detecting the target signal at the determined one or more frequency domain positions.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
As an example, step 31 comprises:
determining a frequency domain position where the target signal may exist according to mutual information between base stations or mutual information between the base stations and a service device (such as a network management device); or,
determining, based on a pre-configuration, a frequency domain location where the target signal may exist; or,
according to the specification of the protocol, the frequency domain position where the target signal possibly exists is determined.
As another embodiment, the target frequency domain position is:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position of a certain synchronous signal grid contained in a carrier wave or a frequency band where the target signal is positioned.
Preferably, the one synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
As a preferred embodiment, the signal sending method provided in the embodiment of the present invention further includes: and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
Preferably, the one synchronization signal grid is: a synchronization signal grid having a corresponding relationship with a frequency band in which the bandwidth occupied by the target signal is located; i.e. the synchronization signal grid has a correspondence with the frequency bands, which correspondence may be determined in a manner predefined based on the protocol. And the base station determines the synchronous signal grid which corresponds to the frequency band of the bandwidth occupied by the target signal as the certain synchronous signal grid according to the corresponding relation between the synchronous signal grid and the frequency band.
As a preferred embodiment, the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
In summary, in the above embodiments of the present invention, the base station may detect the target signal at all possible frequency domain positions, and this way does not increase too much detection complexity for the base station detection on the basis of leaving enough spectrum usage flexibility for the base station.
As shown in fig. 4, an embodiment of the present invention further provides a signal transmitting apparatus, applied to a base station, including:
a first determining module 41, configured to determine a target frequency domain location for transmitting a target signal;
a sending module 42, configured to send the target signal at the determined target frequency domain position.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
Preferably, in the above embodiment of the present invention, the target frequency domain position is:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Preferably, in the above embodiment of the present invention, the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Preferably, in the above embodiment of the present invention, the one synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
and the first synchronization grid determining module is used for determining all synchronization signal grid subsets contained in the carrier or frequency band where the target signal is located according to a mode predefined by a protocol.
In summary, in the above embodiments of the present invention, the base station may select the frequency domain position where the base station transmits the target signal and transmit the target signal at the selected frequency domain position, and the manner in which the base station selects the frequency domain position for the target signal does not increase too much detection complexity for the detection of the base station on the basis of leaving enough spectrum usage flexibility for the base station.
It should be noted that, the signal transmission apparatus provided in the embodiments of the present invention is an apparatus capable of executing the signal transmission method, and all embodiments of the signal transmission method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 5, an embodiment of the present invention further provides a base station, which includes a processor 500 and a transceiver 510, where the processor 500 is configured to perform the following processes:
determining a target frequency domain position for transmitting a target signal;
the transceiver 510 is configured to perform the following processes:
and transmitting the target signal at the determined target frequency domain position.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
Preferably, in the above embodiment of the present invention, the target frequency domain position is:
preferably, in the above embodiment of the present invention, the carrier or frequency band of the target signal includes a frequency domain position where a certain synchronization signal grid is located; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
The relationship between the target frequency domain position and the target signal is as follows:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Preferably, in the above embodiment of the present invention, the one synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Preferably, in the above embodiment of the present invention, the processor 500 is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
In summary, in the embodiments of the present invention, the base station may select the frequency domain position where the base station transmits the target signal and transmit the target signal at the selected frequency domain position, and the manner in which the base station selects the frequency domain position for the target signal does not increase too much detection complexity for the detection of the base station on the basis of leaving enough spectrum usage flexibility for the base station.
It should be noted that, the base station provided in the embodiments of the present invention is a base station capable of executing the above-mentioned signal transmission method, and all embodiments of the above-mentioned signal transmission method are applicable to the base station, and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the foregoing signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 6, an embodiment of the present invention further provides a signal detection apparatus, applied to a base station, including:
a second determining module 61, configured to determine a frequency domain position where the target signal may exist;
a detection module 62 for detecting the target signal at the determined one or more frequency domain locations.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
Preferably, in the above embodiment of the present invention, the second determining module includes:
the determining submodule is used for determining the frequency domain position of the target signal possibly existing according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
for determining, based on a pre-configuration, a frequency domain location where the target signal may exist; or,
the method is used for determining the possible frequency domain positions of the target signal according to the specification of a protocol.
Preferably, in the above embodiment of the present invention, the target frequency domain position is:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Preferably, in the above embodiment of the present invention, the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Preferably, in the above embodiment of the present invention, the one synchronization signal grid is:
one of all synchronization signal grids included in a carrier or frequency band in which the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
and the second synchronization signal grid determining module is used for determining all synchronization signal grid subsets contained in the carrier or frequency band where the target signal is located according to a protocol predefined mode.
In summary, in the above embodiments of the present invention, the base station may detect the target signal at all possible frequency domain positions, and this way does not increase too much detection complexity for the base station detection on the basis of leaving enough spectrum usage flexibility for the base station.
It should be noted that, the signal detection apparatus provided in the embodiments of the present invention is an apparatus capable of executing the signal detection method, and all embodiments of the signal detection method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 5, an embodiment of the present invention further provides a base station, which includes a processor 500 and a transceiver 510, where the processor 500 is configured to perform the following processes:
determining a frequency domain position where a target signal may exist;
detecting the target signal at the determined one or more frequency domain locations.
Preferably, in the above embodiments of the present invention, the target signal is a signal for detecting or identifying interference between base stations.
Preferably, in the above embodiment of the present invention, the processor 500 is further configured to:
determining a frequency domain position where the target signal possibly exists according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
determining, based on a pre-configuration, a frequency domain location where the target signal may exist; or,
according to the specification of the protocol, the frequency domain position where the target signal possibly exists is determined.
Preferably, in the above embodiment of the present invention, the target frequency domain position is:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
Preferably, in the above embodiment of the present invention, the relationship between the target frequency domain position and the target signal is:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
Preferably, in the above embodiment of the present invention, the one synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
Preferably, in the above embodiment of the present invention, the processor 500 is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
In summary, in the above embodiments of the present invention, the base station may detect the target signal at all possible frequency domain positions, and this way does not increase too much detection complexity for the base station detection on the basis of leaving enough spectrum usage flexibility for the base station.
It should be noted that, the base station provided in the embodiments of the present invention is a base station capable of executing the signal detection method, and all embodiments of the signal detection method are applicable to the base station and can achieve the same or similar beneficial effects.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the signal detection method embodiment described above, and can achieve the same technical effect, and for avoiding repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (21)
1. A signal transmission method applied to a base station, comprising:
determining a target frequency domain position for transmitting a target signal;
sending the target signal at the determined target frequency domain position, wherein the target signal is a signal used for detecting or identifying interference between base stations;
the target frequency domain position is as follows:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
2. The method of claim 1, wherein the target frequency domain location is related to the target signal by any one of:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
3. The method of claim 1, wherein the certain synchronization signal grid is:
one of all synchronization signal grids included in a carrier or frequency band in which the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
4. The method of claim 3, further comprising:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
5. A signal detection method applied to a base station, comprising:
determining a frequency domain position where a target signal may exist;
detecting the target signal at the determined one or more frequency domain positions, wherein the target signal is a signal used for inter-base station interference detection or identification;
the target frequency domain positions are:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position of a certain synchronous signal grid contained in a carrier wave or a frequency band where the target signal is positioned.
6. The method of claim 5, wherein determining the frequency domain locations where the target signal may exist comprises:
determining a frequency domain position where the target signal possibly exists according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
determining, based on a pre-configuration, a frequency domain location where the target signal may exist; or,
according to the specification of a protocol, determining the possible frequency domain position of the target signal.
7. The method of claim 5, wherein the target frequency domain location is related to the target signal by any one of:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the subcarrier which is positioned at the middlest of all frequency domain values in all frequency domain subcarriers occupied by the target signal.
8. The method of claim 5, wherein the certain synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, one synchronization signal grid in a synchronization signal grid set of all synchronization signal grid sets contained in a carrier or frequency band in which the target signal is located.
9. The method of claim 8, further comprising:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
10. A signal transmission apparatus applied to a base station, comprising:
the device comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a target frequency domain position for sending a target signal;
a sending module, configured to send the target signal at the determined target frequency domain position, where the target signal is a signal used for inter-base station interference detection or identification;
the target frequency domain positions are:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
11. A base station comprising a processor and a transceiver, wherein the processor is configured to perform the following:
determining a target frequency domain position for transmitting a target signal;
the transceiver is used for executing the following processes:
sending the target signal at the determined target frequency domain position, wherein the target signal is a signal used for detecting or identifying interference between base stations;
the target frequency domain positions are:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
12. The base station of claim 11, wherein the target frequency domain location is related to the target signal by any one of:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
13. The base station of claim 11, wherein the certain synchronization signal grid is:
one of all synchronization signal grids contained in a carrier or frequency band where the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
14. The base station of claim 13, wherein the processor is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
15. A signal detection device applied to a base station, comprising:
the second determining module is used for determining the frequency domain position where the target signal possibly exists;
a detection module, configured to detect the target signal at the determined one or more frequency domain positions, where the target signal is a signal used for inter-base station interference detection or identification;
the target frequency domain positions are:
a frequency domain position of a certain synchronous signal grid contained in a carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position of a certain synchronous signal grid contained in a carrier wave or a frequency band where the target signal is positioned.
16. A base station comprising a processor and a transceiver, wherein the processor is configured to perform the following:
determining a frequency domain position where a target signal may exist;
detecting the target signal at the determined one or more frequency domain positions, wherein the target signal is a signal used for inter-base station interference detection or identification;
the target frequency domain positions are:
the frequency domain position of a certain synchronous signal grid contained in the carrier or frequency band of the target signal; or,
and a frequency domain position with a first fixed frequency domain offset value is arranged between the frequency domain position and a frequency domain position where a certain synchronous signal grid contained in a carrier or a frequency band where the target signal is located.
17. The base station of claim 16, wherein the processor is further configured to:
determining a frequency domain position where the target signal possibly exists according to the mutual information between the base stations or the mutual information between the base stations and the service equipment; or,
determining, based on a pre-configuration, a frequency domain location where the target signal may exist; or,
according to the specification of the protocol, the frequency domain position where the target signal possibly exists is determined.
18. The base station of claim 16, wherein the target frequency domain location is related to the target signal by any one of:
the target frequency domain position is a subcarrier with the highest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier with the lowest frequency value in all frequency domain subcarriers occupied by the target signal;
the target frequency domain position is a subcarrier which is located at the center of all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a second fixed offset value is arranged between the target frequency domain position and the lowest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
a third fixed offset value is arranged between the target frequency domain position and the highest subcarrier located in all frequency domain values in all frequency domain subcarriers occupied by the target signal;
and a fourth fixed offset value is arranged between the target frequency domain position and the most middle subcarrier of all frequency domain subcarriers occupied by the target signal and positioned in all frequency domain values.
19. The base station of claim 16, wherein the certain synchronization signal grid is:
one of all synchronization signal grids included in a carrier or frequency band in which the target signal is located;
or, a synchronization signal grid in one synchronization signal grid set of all synchronization signal grid sets included in a carrier or a frequency band in which the target signal is located.
20. The base station of claim 19, wherein the processor is further configured to:
and determining all synchronous signal grid subsets contained in the carrier or frequency band of the target signal according to a mode predefined by a protocol.
21. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the signal transmission method according to any one of claims 1 to 4; alternatively, the program realizes the steps in the signal detection method according to any one of claims 5 to 9 when executed by a processor.
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