CN110831046B - Signal transmission method and network equipment - Google Patents
Signal transmission method and network equipment Download PDFInfo
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- CN110831046B CN110831046B CN201810912124.5A CN201810912124A CN110831046B CN 110831046 B CN110831046 B CN 110831046B CN 201810912124 A CN201810912124 A CN 201810912124A CN 110831046 B CN110831046 B CN 110831046B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention provides a signal transmission method and network equipment, belonging to the technical field of wireless communication, wherein the method applied to first network equipment comprises the following steps: transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference; receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference. In the invention, the first network equipment judges whether the remote interference exists according to the received first feedback information for indicating the existence of the remote interference, and compared with the method for judging whether the remote interference exists according to the interference signal detected by the first network equipment, the method can improve the judgment accuracy and avoid the ping-pong effect.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a signal transmission method and a network device.
Background
In time division duplex (Time Division Duplexing, TDD) system networking, the same uplink and downlink configuration is generally selected to avoid uplink and downlink interference between cells. And a Guard Period (GP) is set between the downlink and uplink transmissions, which is generally N (< 14) orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols. The GP length needs to be selected to ensure that downlink transmissions of other base stations within a certain range (typically tens of kilometers) will not interfere with uplink reception of the base station. And under the normal condition, the base station cannot experience interference generated by downlink transmission of the base station outside hundred kilometers due to the loss of electromagnetic waves in space propagation. However, due to the influence of factors such as atmospheric refraction and propagation environment, for example, the atmospheric waveguide phenomenon may cause that the downstream transmission of the remote base station beyond hundred kilometers interferes with the upstream reception of the base station, as shown in fig. 1, that is, the remote interference phenomenon. The remote interference range can reach hundred kilometers, for example 300km, the propagation delay is 1ms, the protection interval (GP) of uplink and downlink switching is exceeded, and the interference source is downlink resources before the GP.
In the prior art, the solution of far-end interference is as follows: 1. after the interfered base station detects the far-end interference, the interfered base station transmits an interfered reference signal; 2. shi Raoji station performs interference management (or referred to as interference backoff) after receiving the corresponding reference signal; 3. shi Rao the base station can not detect the far-end interference, and stops sending the interfered reference signals; 4. shi Rao after receiving no interfered reference signal, the base station returns to the original transmission mode (i.e., stops performing interference management). If the factor causing the remote interference is not disappeared, the interfering base station will continue to generate the remote interference to the interfered base station, and the remote interference solving process needs to be repeatedly executed. I.e. a ping-pong effect is caused.
Disclosure of Invention
In view of this, the present invention provides a signal transmission method and a network device, which are used for solving the problem that the scheme of judging whether the remote interference exists by the interfered base station according to the self-detection interference information is easy to cause the ping-pong effect.
To solve the above technical problem, in a first aspect, the present invention provides a signal transmission method, applied to a first network device, where the method includes:
transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
Receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference.
Preferably, the transmitting the first reference signal includes:
and when the remote interference is judged to exist, the first reference signal is sent.
Preferably, the sending the first reference signal when it is determined that there is far-end interference includes:
when the uplink interference noise IoT of the first network device presents the far-end interference characteristic, it is determined that far-end interference exists, and the first reference signal is sent.
Preferably, the method further comprises:
and when second type feedback information is received, stopping sending the first reference signal if a preset condition is met, wherein the second type feedback information indicates that the second network equipment does not hear the first reference signal.
Preferably, the predetermined condition is determined according to the received first type feedback information and the second type feedback information.
Preferably, the first type of feedback information is transmitted to the first network device via a link between the first network device and a second network device.
Preferably, the first type of feedback information is transmitted by the second network device to the first network device via the third network device.
Preferably, the second type of feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Preferably, the second type of feedback information is transmitted by the second network device to the first network device via the third network device.
In a second aspect, the present invention further provides a signal transmission method, applied to a second network device, the method including:
listening for a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
and sending first-type feedback information, wherein the first-type feedback information indicates that remote interference exists.
Preferably, the listening for the first reference signal includes:
listening to the first reference signal when an uplink interference noise IoT of the second network device exhibits a far-end interference characteristic; or alternatively, the process may be performed,
and according to the OAM configuration, the first reference signal is intercepted.
Preferably, the method further comprises:
when the first reference signal is detected, remote interference management is performed, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Preferably, the sending the first type of feedback information includes:
and when the first reference signal is detected, sending the first type of feedback information.
Preferably, the method further comprises:
before sending the first type of feedback information, a link is established with the first network device.
Preferably, the sending the first type of feedback information includes:
and sending the first type feedback information to the first network equipment.
Preferably, the sending the first type of feedback information includes:
the first type of feedback information is communicated to the first network device via a third network device.
Preferably, the method further comprises:
and when the first reference signal is not detected, sending second-type feedback information.
Preferably, the sending the second type feedback information includes:
and sending the second type feedback information to the first network equipment.
Preferably, the sending the second type feedback information includes:
the second type of feedback information is transmitted to the first network device via a third network device.
Preferably, the method further comprises:
when the first reference signal is not detected, remote interference management is stopped, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Preferably, the method further comprises:
stopping listening to the first reference signal when the first reference signal is not heard within a first time window; or alternatively, the process may be performed,
And stopping interception of the first reference signal according to the OAM configuration.
Preferably, the first time window is configured by the second network device or OAM configured.
Preferably, the absence of hearing the first reference signal means at least one of: the signal strength of the detected first reference signal is lower than a first threshold value; the number of the first reference signals detected is lower than a second threshold value.
In a third aspect, the present invention also provides a first network device, including: a first transceiver and a first processor;
the first transceiver is configured to: transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
the first transceiver is further configured to: receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference.
In a fourth aspect, the present invention also provides a second network device, including: a second transceiver and a second processor;
the second transceiver is configured to: listening for a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
the second transceiver is further configured to: and sending first-type feedback information, wherein the first-type feedback information indicates that remote interference exists.
In a fifth aspect, the present invention also provides a network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the steps of any one of the signal transmission methods described above are implemented when the processor executes the computer program.
In a sixth aspect, the present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of any of the above-mentioned signal transmission methods.
The technical scheme of the invention has the following beneficial effects:
in the embodiment of the invention, the first network equipment judges whether the far-end interference exists according to the received first feedback information for indicating the existence of the far-end interference, and compared with the method for judging whether the far-end interference exists according to the interference signal detected by the first network equipment, the method can improve the judgment accuracy and avoid the ping-pong effect.
Drawings
FIG. 1 is a schematic diagram of the principle of far-end interference;
FIG. 2 is a flow diagram of an existing solution for far-end interference;
fig. 3 is a flowchart of a signal transmission method applied to a first network device according to a first embodiment of the present invention;
Fig. 4 is a schematic diagram of remote interference management according to an embodiment of the present invention;
fig. 5 is an overall flowchart of remote interference management according to an embodiment of the present invention;
fig. 6 is a flowchart of a signal transmission method applied to a second network device in a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first network device in a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second network device in a fourth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a network device in a fifth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network device in a sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
In the existing 4G network, as shown in fig. 2, when a interfered station (also referred to as a interfered base station or a first network device) is interfered, whether the detected interference noise accords with the interference characteristic of the atmospheric waveguide is judged, if so, a Reference Signal (RS) is sent, after the interfering station (also referred to as a Shi Raoji station or a second network device) listens to the reference signal, an interference measurement result is reported to an artificial background (specifically, may be an operation maintenance management (Operation Administration and Maintenance) or abbreviated as OAM), and the artificial background configures interference rollback for the interfering station according to the interference measurement result reported by the interfering station, and the interfering station performs interference rollback according to the configuration of the artificial background.
However, the far-end interference solution described above has the following problems: 1. non-real time; 2. non-self-adaption, for starting and ending of events (such as sending reference signals, intercepting reference signals, carrying out interference rollback and recovering original sending modes, etc.), manual intervention is needed, the duration of the whole process is needed to be controlled manually and empirically, inaccuracy is likely to cause lower system efficiency.
Referring to fig. 3, a signal transmission method is provided in an embodiment of the present invention, and the method is applied to a first network device, and includes the following steps:
step 11: transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
step 12: receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference.
Referring to fig. 4 and fig. 5, in the signal transmission method provided by the embodiment of the present invention, after the first network device (specifically, the first base station) detects the far-end interference, that is, after it experiences the far-end interference, the first reference signal (also referred to as an interfered reference signal) is sent. Based on the reciprocity of the channel, if the first network device is interfered by the downlink signal of the second network device (specifically, the second base station) at the far end due to the atmospheric waveguide, the first reference signal sent by the first network device can be detected by the second network device. The second network device, after listening to the first reference signal, sends a first type of feedback information (also referred to as a feedback signal) to the first network device to inform the first network device that there is far-end interference. At this time, whether the first network device detects far-end interference noise or not is judged according to the first type of feedback information whether far-end interference exists or not. After the second network device performs the remote interference management, the first network device may not detect the remote interference noise, but the cause (such as an atmospheric waveguide phenomenon) of the remote interference is not disappeared, so that the method for judging whether the remote interference exists according to the detected remote interference noise by the first network device is inaccurate, and a ping-pong effect is easily caused. The method for judging whether the remote interference exists or not through the first type of feedback signals is accurate, and the ping-pong effect is avoided.
The above signal transmission method is exemplified below.
Preferably, the transmitting the first reference signal includes:
and when the remote interference is judged to exist, the first reference signal is sent.
In this embodiment, when the first network device determines that there is far-end interference, the first network device triggers to send the first reference signal, that is, only when it determines that there is far-end interference, the first reference signal is sent, so as to save communication resources.
Further, when the first network device judges that the remote interference exists, the first reference signal is automatically triggered to be sent. Compared with a method of manually triggering and transmitting the first reference signal, the method is higher in efficiency.
Optionally, the sending the first reference signal when it is determined that there is far-end interference includes:
when the uplink interference noise (Interference over Thermal, ioT for short) of the first network device presents the far-end interference characteristic, it is determined that far-end interference exists, and the first reference signal is sent.
In addition, it may also be that when the uplink interference noise of the first network device exhibits a far-end interference characteristic and the intensity is greater than a certain threshold, it is determined that the far-end interference exists.
In the embodiment of the invention, whether the remote interference exists is judged mainly according to whether the uplink interference noise detected by the first network equipment presents the remote interference characteristic.
In other embodiments, other ways of determining whether a remote disturbance is present may be used.
The sending position of the first reference signal is an end position of a downlink resource, and the end position of the downlink resource is located before and next to a guard interval (GP). I.e. the first reference signal is sent on the downlink resource immediately before the GP. The second network equipment can accurately determine the uplink time length of the remote interference influence according to the position of the first reference signal, so that corresponding remote interference management is performed according to the uplink time length of the remote interference influence.
The method provided by the embodiment of the invention further comprises the following steps: and when second type feedback information is received, stopping sending the first reference signal if a preset condition is met, wherein the second type feedback information indicates that the second network equipment does not hear the first reference signal.
In the embodiment of the invention, after the second network device detects the first reference signal for the first time, the second network device continues to detect the first reference signal, and if the first reference signal is not detected any more, the second network device sends second type feedback information to the first network device so as to inform the first network device that the second network device does not detect the first reference signal.
The preset condition is judged according to the received first-type feedback information and the received second-type feedback information.
Because the remote interference may be formed to the first network device by more than one second network device, the first network device may only receive the first type feedback information or the second type feedback information sent by one second network device at a time, and may also simultaneously receive the first type feedback information or the second type feedback information sent by other second network devices. Thus, the first network device needs to comprehensively determine whether to stop transmitting the first reference signal (considered that far-end interference has disappeared) or continue transmitting the first reference signal (considered that far-end interference also exists) according to all the received first type feedback information and/or second type feedback information.
Therefore, the predetermined condition may be that the ratio of the number of the second type feedback information in the sum of the numbers of the first type feedback information and the second type feedback information is greater than a predetermined threshold value, or that the number of the second type feedback information is greater than a predetermined threshold value.
In other embodiments, the first type of feedback information and/or the second type of feedback information may further carry other information, for example, information for indicating a relevant parameter (such as signal strength, etc.) of the first reference signal that is detected by the second network device, so that the first network device may further comprehensively consider the number of the first type of feedback information and/or the second type of feedback information, and other information carried in the first type of feedback information and/or the second type of feedback information to determine whether to stop sending the first reference signal.
Optionally, the first type of feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Optionally, the first type of feedback information is transmitted by the second network device to the first network device via the third network device.
Optionally, the second type of feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Optionally, the second type of feedback information is transmitted by the second network device to the first network device via the third network device.
The transmission method of the first type feedback information and the second type feedback information is not influenced by factors such as atmospheric waveguides, and the transmission reliability is high.
In the embodiment of the present invention, the first network device and the second network device are base stations, and the third network device may be a core network element.
Referring to fig. 6, a second embodiment of the present invention provides a signal transmission method, which is applied to a second network device, and includes the following steps:
step 21: listening for a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
step 22: and sending first-type feedback information, wherein the first-type feedback information indicates that remote interference exists.
In the signal transmission method, after the second network device listens to the first reference signal (sent by the first network device), the second network device sends first type feedback information for indicating that remote interference exists to the first network device, so that whether the first network device detects remote interference noise at this time or not, whether the remote interference exists or not is judged according to the first type feedback information. After the second network device performs the remote interference management, the first network device may not detect the remote interference noise, but the cause (such as an atmospheric waveguide phenomenon) of the remote interference is not disappeared, so that the method for judging whether the remote interference exists according to the detected remote interference noise by the first network device is inaccurate, and a ping-pong effect is easily caused. The method for judging whether the remote interference exists or not through the first type of feedback signals is accurate, and the ping-pong effect can be avoided.
The above signal transmission method is exemplified below.
Optionally, the listening for the first reference signal includes:
listening to the first reference signal when an uplink interference noise IoT of the second network device exhibits a far-end interference characteristic; or alternatively, the process may be performed,
and according to the OAM configuration, the first reference signal is intercepted.
That is, in the embodiment of the present invention, the triggering condition for the second network device to intercept the first reference signal may be that the uplink interference noise IoT of the second network device exhibits the far-end interference characteristic, or may be OAM configuration.
In addition, the method further comprises:
when the first reference signal is detected, remote interference management is performed, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
In the embodiment of the invention, after the second network device monitors the first reference signal (sent by the first network device), the second network device determines that the second network device is a remote interference source of the first network device, so that remote interference management is required to weaken or eliminate interference of a downlink signal of the second network device on an uplink signal of the first network device.
Preferably, in this embodiment, the second network device automatically triggers the remote interference management when hearing the first reference signal, which is more timely and more accurate than the mode that requires manual configuration of the remote interference management.
In an embodiment of the present invention, the sending the first type of feedback information includes:
and when the first reference signal is detected, sending the first type of feedback information.
That is, the trigger condition for transmitting the first type of feedback information is that the first reference signal is detected. Preferably, the second network device automatically triggers to send the first type of feedback information after hearing the first reference signal.
Preferably, the method further comprises:
before the first type feedback information is sent, a link with the first network equipment is established, so that the first type feedback information is sent to the first network equipment by utilizing the link, and the reliability of the first type feedback information transmission is improved. Wherein the link may be established through an interface (Xn interface) between the first network device and the second network device, or may be established through a core network (Ng interface). The link may also be established by other means, without limitation.
Specifically, the sending the first type of feedback information includes:
and sending the first type feedback information to the first network equipment.
Optionally, the sending the first type of feedback information includes:
the first type of feedback information is communicated to the first network device via a third network device.
In addition, the method further comprises:
and when the first reference signal is not detected, sending second-type feedback information.
In the embodiment of the invention, the first network device judges whether the remote interference disappears according to the second type feedback information (used for indicating that the second network device cannot hear the first reference signal) sent by the second network device, and compared with a method for judging whether the remote interference disappears according to the interference detected by the first network device, the method can improve the judgment accuracy and avoid the ping-pong effect.
And after the second network equipment detects the first reference signal for the first time, the second network equipment continuously detects the first reference signal, and if the first reference signal is not detected, the second type feedback information is sent to inform the first network equipment that the first reference signal is not detected.
Specifically, the sending the second type feedback information includes:
and sending the second type feedback information to the first network equipment.
Optionally, the sending the second type feedback information includes:
the second type of feedback information is transmitted to the first network device via a third network device.
Further, when the first reference signal is not detected, remote interference management is stopped, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
After the second network device detects the first reference signal for the first time, the second network device continues to monitor the first reference signal, and if the second network device does not monitor the first reference signal any more, the remote interference management is stopped, so that the original transmission mode is recovered for downlink transmission. Because, if the second network device does not monitor the first reference signal (sent by the first network device), it is determined that the second network device is no longer a remote interference source of the first network device, so that the original sending mode can be restored to send the downlink signal. More timely and accurate than the way in which manual configuration is required to cease far-end interference management.
Optionally, the method further comprises:
stopping listening to the first reference signal when the first reference signal is not heard within a first time window; or alternatively, the process may be performed,
and stopping interception of the first reference signal according to the OAM configuration.
That is, the triggering condition for stopping listening to the first reference signal may be that the first reference signal is not detected within the first time window, or may be according to the configuration of the OAM.
Specifically, the first time window is configured by the second network device or OAM configured. The first time window cannot be in downlink time, and can be monitored in uplink time after GP. Preferably, the starting position of the first time window is the starting position of the uplink resource, so as to accurately judge the uplink starting point of the influence of the remote interference, thereby accurately judging the uplink duration of the influence of the remote interference.
In addition, when the first reference signal is detected, performing remote interference management may specifically include:
acquiring a position where the first reference signal is detected;
judging the uplink time length of the influence of the remote interference according to the position of the first reference signal;
and executing remote interference management according to the uplink time length of the remote interference influence.
In the embodiment of the invention, in order to determine the uplink duration affected by the remote interference by using the position where the first reference signal is detected, the transmitting position of the first reference signal needs to be ensured to be fixed. After the uplink time length of the remote interference influence is obtained, an optimal remote interference management scheme is determined according to the time length, so that the influence of the remote interference management on the downlink transmission of the second network equipment is reduced as much as possible.
Optionally, the absence of hearing the first reference signal means at least one of: the signal strength of the detected first reference signal is lower than a first threshold value; the number of the first reference signals detected is lower than a second threshold value.
In other embodiments, the first reference signal not being detected may be defined as other, and is not limited herein.
In the embodiment of the present invention, referring to fig. 4 and fig. 5, after the second network device listens to a first reference signal (which may also be referred to as an interfered reference signal) sent by the first network device (specifically, may be a first base station), the second network device sends first type feedback information (which may also be referred to as a feedback signal) for indicating that there is far-end interference to the first network device, and performs far-end interference management. Then, if the second network device does not sense the first reference signal any more, it determines that the second network device is no longer a remote interference source, stops remote interference management (for example, may be interference back-off) and sensing of the first reference signal, and sends second type feedback information (which may also be referred to as a feedback signal) to the first network device, which is used to inform the first network device that the first network device cannot sense the first reference signal, so that the first network device determines whether the remote interference disappears according to the first type feedback information and/or the second type feedback information, and determines whether to continue to send the first reference signal or stop sending the first reference signal.
In the embodiment of the invention, the first network device and the second network device are base stations, and the third network device is a core network element.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a first network device according to a third embodiment of the present invention, where the first network device 300 includes: a first transceiver 301 and a first processor 302;
the first transceiver 301 is configured to: transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
the first transceiver 301 is further configured to: receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference.
In the embodiment of the invention, the first network equipment judges whether the far-end interference exists according to the received first feedback information for indicating the existence of the far-end interference, and compared with the method for judging whether the far-end interference exists according to the interference signal detected by the first network equipment, the method can improve the judgment accuracy and avoid the ping-pong effect.
Specifically, the first transceiver 301 is configured to: and when the remote interference is judged to exist, the first reference signal is sent.
Specifically, the first transceiver 301 is configured to: when the uplink interference noise IoT of the first network device presents the far-end interference characteristic, it is determined that far-end interference exists, and the first reference signal is sent.
Specifically, the first transceiver 301 is configured to: and when second type feedback information is received, stopping sending the first reference signal if a preset condition is met, wherein the second type feedback information indicates that the second network equipment does not hear the first reference signal.
Specifically, the predetermined condition is judged according to the received first-type feedback information and the received second-type feedback information.
Specifically, the first type of feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Specifically, the first type of feedback information is transmitted to the first network device by the second network device through the third network device.
Specifically, the second type feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Specifically, the second type of feedback information is transmitted to the first network device by the second network device through the third network device.
The embodiment of the present invention is an embodiment of the apparatus corresponding to the first embodiment, so that the description is omitted herein, and reference is made to the first embodiment in detail.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a second network device according to a fourth embodiment of the present invention, where the second network device 400 includes: a second transceiver 401 and a second processor 402;
The second transceiver 401 is configured to: listening for a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
the second transceiver 401 is further configured to: and sending first-type feedback information, wherein the first-type feedback information indicates that remote interference exists.
In the embodiment of the invention, after the second network equipment monitors the first reference signal, the second network equipment sends the first type feedback signal indicating the existence of the remote interference to the first network equipment, so that the first network equipment judges whether the remote interference exists according to the first type feedback information.
Specifically, the second transceiver 401: listening to the first reference signal when an uplink interference noise IoT of the second network device exhibits a far-end interference characteristic; or, according to an OAM configuration, listening for the first reference signal.
Specifically, the second processor 402 is configured to: when the first reference signal is detected, remote interference management is performed, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Specifically, the second transceiver 401 is configured to: and when the first reference signal is detected, sending the first type of feedback information.
Specifically, the second transceiver 401 is configured to: before sending the first type of feedback information, a link is established with the first network device.
Specifically, the second transceiver 401 is configured to: and sending the first type feedback information to the first network equipment.
Specifically, the second transceiver 401 is configured to: the first type of feedback information is communicated to the first network device via a third network device.
Specifically, the second transceiver 401 is further configured to: and when the first reference signal is not detected, sending second-type feedback information.
Specifically, the second transceiver 401 is configured to: and sending the second type feedback information to the first network equipment.
Specifically, the second transceiver 401 is configured to: the second type of feedback information is transmitted to the first network device via a third network device.
Specifically, the second processor 402 is further configured to: when the first reference signal is not detected, remote interference management is stopped, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Specifically, the second transceiver 401 is further configured to: stopping listening to the first reference signal when the first reference signal is not heard within a first time window; or stopping interception of the first reference signal according to the OAM configuration.
Specifically, the first time window is configured by the second network device or OAM configured.
Specifically, the absence of hearing the first reference signal means at least one of: the signal strength of the detected first reference signal is lower than a first threshold value; the number of the first reference signals detected is lower than a second threshold value.
The embodiment of the present invention is an embodiment of the device corresponding to the second embodiment, so that the description is omitted herein, and reference is made in detail to the second embodiment.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a network device according to a fifth embodiment of the present invention, where the network device 500 includes a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501; the processor 501, when executing the computer program, performs the following steps:
transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
Receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference.
In the embodiment of the invention, the first network equipment judges whether the far-end interference exists according to the received first feedback information for indicating the existence of the far-end interference, and compared with the method for judging whether the far-end interference exists according to the interference signal detected by the first network equipment, the method can improve the judgment accuracy and avoid the ping-pong effect.
Optionally, the computer program may further implement the following steps when executed by the processor 501:
the transmitting the first reference signal includes:
and when the remote interference is judged to exist, the first reference signal is sent.
Optionally, the computer program may further implement the following steps when executed by the processor 501:
and when the remote interference is judged to exist, sending the first reference signal, wherein the sending comprises the following steps:
when the uplink interference noise IoT of the first network device presents the far-end interference characteristic, it is determined that far-end interference exists, and the first reference signal is sent.
Optionally, the computer program may further implement the following steps when executed by the processor 501:
and when second type feedback information is received, stopping sending the first reference signal if a preset condition is met, wherein the second type feedback information indicates that the second network equipment does not hear the first reference signal.
Optionally, the predetermined condition is determined according to the received first type feedback information and the second type feedback information.
Optionally, the first type of feedback information is transmitted to the first network device via a link between the first network device and a second network device.
Optionally, the first type of feedback information is transmitted by the second network device to the first network device via the third network device.
Optionally, the second type of feedback information is transmitted to the first network device via a link between the first network device and the second network device.
Optionally, the second type of feedback information is transmitted by the second network device to the first network device via the third network device.
The specific working process is the same as that of the first embodiment, so the detailed description thereof will be omitted herein, and reference is made to the description of the method steps in the first embodiment.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a network device according to a sixth embodiment of the present invention, where the network device 600 includes a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601; the processor 601, when executing the computer program, performs the following steps:
Listening for a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
transmitting a first type of feedback information indicating the presence of far-end interference
In the embodiment of the invention, after the second network equipment monitors the first reference signal, the second network equipment sends the first type feedback signal indicating the existence of the remote interference to the first network equipment, so that the first network equipment judges whether the remote interference exists according to the first type feedback information.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
optionally, the computer program may further implement the following steps when executed by the processor 601:
the listening for a first reference signal comprises:
listening to the first reference signal when an uplink interference noise IoT of the second network device exhibits a far-end interference characteristic; or alternatively, the process may be performed,
and according to the OAM configuration, the first reference signal is intercepted.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
When the first reference signal is detected, remote interference management is performed, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
the sending the first type of feedback information includes:
and when the first reference signal is detected, sending the first type of feedback information.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
before sending the first type of feedback information, a link is established with the first network device.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
the sending the first type of feedback information includes:
and sending the first type feedback information to the first network equipment.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
the sending the first type of feedback information includes:
the first type of feedback information is communicated to the first network device via a third network device.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
and when the first reference signal is not detected, sending second-type feedback information.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
the sending the second type feedback information includes:
and sending the second type feedback information to the first network equipment.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
the sending the second type feedback information includes:
the second type of feedback information is transmitted to the first network device via a third network device.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
when the first reference signal is not detected, remote interference management is stopped, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
Optionally, the computer program may further implement the following steps when executed by the processor 601:
stopping listening to the first reference signal when the first reference signal is not heard within a first time window; or alternatively, the process may be performed,
and stopping interception of the first reference signal according to the OAM configuration.
Optionally, the first time window is configured by the second network device or OAM configured.
Optionally, the absence of hearing the first reference signal means at least one of: the signal strength of the detected first reference signal is lower than a first threshold value; the number of the first reference signals detected is lower than a second threshold value.
The specific working process is identical to that of the second embodiment, so that the detailed description thereof will be omitted herein, and reference is made to the description of the method steps in the second embodiment.
A seventh embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the signal transmission methods of the first or second embodiments. For details, reference is made to the description of the method steps in the corresponding embodiments above.
The network device in the embodiment of the present invention may be a base station (Base Transceiver Station, BTS) in global mobile communications (Global System of Mobile communication, GSM for short) or code division multiple access (Code Division Multiple Access, CDMA for short), a base station (NodeB, NB for short) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA for short), an evolved base station (Evolutional Node B, eNB or eNodeB for short) in LTE, a relay station or access point, or a base station in a future 5G network, etc., which are not limited herein.
Such computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may be implemented in any method or technology for information storage. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (26)
1. A signal transmission method applied to a first network device, the method comprising:
transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference;
wherein the first type of feedback information is sent when the second network device receives the first reference signal.
2. The method of claim 1, wherein the transmitting the first reference signal comprises:
and when the remote interference is judged to exist, the first reference signal is sent.
3. The method of claim 2, wherein transmitting the first reference signal when it is determined that far-end interference is present comprises:
when the uplink interference noise IoT of the first network device presents the far-end interference characteristic, it is determined that far-end interference exists, and the first reference signal is sent.
4. The method according to claim 1, wherein the method further comprises:
and when second type feedback information is received, stopping sending the first reference signal if a preset condition is met, wherein the second type feedback information indicates that the second network equipment does not receive the first reference signal.
5. The method of claim 4, wherein the predetermined condition is determined based on the received first type of feedback information and the received second type of feedback information.
6. The method of claim 1, wherein the first type of feedback information is communicated to the first network device via a link between the first network device and a second network device.
7. The method of claim 1, wherein the first type of feedback information is communicated by a second network device to the first network device via a third network device.
8. The method of claim 4, wherein the second type of feedback information is communicated to the first network device via a link between the first network device and the second network device.
9. The method of claim 4, wherein the second type of feedback information is transmitted by a second network device to the first network device via a third network device.
10. A signal transmission method applied to a second network device, the method comprising:
receiving a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
transmitting first-type feedback information, wherein the first-type feedback information indicates that remote interference exists;
the sending the first type of feedback information includes:
and when the first reference signal is received, sending the first type of feedback information.
11. The method of claim 10, wherein the receiving the first reference signal comprises:
receiving the first reference signal when an uplink interference noise IoT of the second network device exhibits a far-end interference characteristic; or alternatively, the process may be performed,
and receiving the first reference signal according to the OAM configuration.
12. The method as recited in claim 10, further comprising:
when the first reference signal is received, remote interference management is performed, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
13. The method as recited in claim 10, further comprising:
before sending the first type of feedback information, a link is established with the first network device.
14. The method of claim 10, wherein the transmitting the first type of feedback information comprises:
and sending the first type feedback information to the first network equipment.
15. The method of claim 10, wherein the transmitting the first type of feedback information comprises:
the first type of feedback information is communicated to the first network device via a third network device.
16. The method as recited in claim 10, further comprising:
and when the first reference signal is not received, transmitting second-type feedback information.
17. The method of claim 16, wherein the sending the second type of feedback information comprises:
and sending the second type feedback information to the first network equipment.
18. The method of claim 17, wherein the sending the second type of feedback information comprises:
the second type of feedback information is transmitted to the first network device via a third network device.
19. The method as recited in claim 10, further comprising:
when the first reference signal is not received, remote interference management is stopped, wherein the remote interference management comprises remote interference avoidance and/or remote interference deletion.
20. The method as recited in claim 10, further comprising:
stopping receiving the first reference signal when the first reference signal is not received in a first time window; or alternatively, the process may be performed,
and stopping receiving the first reference signal according to the OAM configuration.
21. The method of claim 20, wherein the first time window is configured by the second network device or OAM configured.
22. The method according to claim 19 or 20, wherein said not receiving said first reference signal means at least one of: the received signal strength of the first reference signal is lower than a first threshold value; the number of the received first reference signals is lower than a second threshold value.
23. A first network device, comprising: a first transceiver and a first processor;
the first transceiver is configured to: transmitting a first reference signal, the first reference signal indicating: the first network device is subject to far-end interference;
the first transceiver is further configured to: receiving first-type feedback information, wherein the first-type feedback information indicates: there is far-end interference;
wherein the first type of feedback information is sent when the second network device receives the first reference signal.
24. A second network device, the second network device comprising: a second transceiver and a second processor;
the second transceiver is configured to: receiving a first reference signal, the first reference signal indicating that a first network device is subject to far-end interference;
the second transceiver is further configured to: transmitting first-type feedback information, wherein the first-type feedback information indicates that remote interference exists;
the second transceiver is further configured to: and when the first reference signal is received, sending the first type of feedback information.
25. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the signal transmission method according to any one of claims 1 to 22.
26. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the signal transmission method according to any one of claims 1 to 22.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655650A (en) * | 2012-01-05 | 2012-09-05 | 电信科学技术研究院 | Method and equipment for positioning far-end interference base station |
| CN105828349A (en) * | 2015-01-04 | 2016-08-03 | 中国移动通信集团公司 | Far-end interference detection method and far-end interference detection device based on TD-LTE system |
| CN106488488A (en) * | 2015-08-31 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of base station interference detection method and device |
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| US9060280B2 (en) * | 2011-07-29 | 2015-06-16 | Blackberry Limited | Enhanced in-device coexistence interference avoidance using predetermined downlink channel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655650A (en) * | 2012-01-05 | 2012-09-05 | 电信科学技术研究院 | Method and equipment for positioning far-end interference base station |
| CN105828349A (en) * | 2015-01-04 | 2016-08-03 | 中国移动通信集团公司 | Far-end interference detection method and far-end interference detection device based on TD-LTE system |
| CN106488488A (en) * | 2015-08-31 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of base station interference detection method and device |
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