CN111836387A - Self-adaptive method and device for far-end interference - Google Patents
Self-adaptive method and device for far-end interference Download PDFInfo
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- CN111836387A CN111836387A CN201910309035.6A CN201910309035A CN111836387A CN 111836387 A CN111836387 A CN 111836387A CN 201910309035 A CN201910309035 A CN 201910309035A CN 111836387 A CN111836387 A CN 111836387A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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Abstract
The embodiment of the invention provides a self-adaptive method and a device of far-end interference, which are applied to an air interface system, wherein the air interface system comprises a local base station and a far-end base station, the local base station acquires the interference power of an uplink time slot symbol, judges whether the interference power is larger than a preset first threshold value or not, when the interference power is larger than the preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbol, then the local base station adjusts the plurality of first target symbols, and sends a characteristic sequence aiming at the interference power to the far-end base station, so that the far-end base station adjusts the downlink time slot symbol of the far-end base station according to the characteristic sequence, thereby self-adaptively scheduling downlink time slot symbol services close to GP in real time, limiting the scheduling of the uplink time slot symbol which is seriously interfered, avoiding the uplink services which are mutually blocked between the base stations due to the far-, the key technical indexes and user experience of the base station interfered by the far end are guaranteed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for adaptive remote interference.
Background
With the development of the fifth generation wireless communication technology, 5G will be able to provide access to information and sharing of data for each user and application anywhere and anytime, be able to connect all contents wirelessly, and provide fast and rich contents and services, thereby enriching people's lives.
For uplink and downlink timeslots of an NR (New Radio, New air interface) system, the same frequency resource may be shared in a time division mode. However, in a specific climate or geographic environment, downlink timeslot data of the local base station of the NR system is transmitted over a long distance, and when the downlink timeslot data exceeds GP (Guard Period), the uplink timeslot data of the remote base station is easily interfered. The remote interference has reciprocity, and the downlink time slot data of the remote base station also interferes with the local uplink time slot.
The far-end interference has the characteristics of large interference range and long duration, which causes continuous blocking of uplink time slot symbol service, causes deterioration of various technical indexes of the NR network, and seriously affects user experience. However, there is no solution to how to handle far-end interference.
Disclosure of Invention
The embodiment of the invention provides a self-adaptive method of far-end interference, which aims to solve the problem of far-end interference between base stations.
Correspondingly, the embodiment of the invention also provides a self-adaptive device of the far-end interference, which is used for ensuring the realization and the application of the method.
In order to solve the above problem, an embodiment of the present invention discloses an adaptive method for far-end interference, which is applied to an air interface system, where the air interface system includes a local base station and a far-end base station, and the method includes:
the local base station acquires interference power of an uplink time slot symbol and judges whether the interference power is greater than a preset first threshold value or not;
when the interference power is greater than a preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbols;
and the local base station adjusts the plurality of first target symbols and sends a characteristic sequence aiming at the interference power to the remote base station so that the remote base station adjusts the downlink time slot symbols of the remote base station according to the characteristic sequence.
Optionally, the method further includes:
and the local base station receives the characteristic sequence sent by the remote base station so as to adjust the downlink time slot symbol of the local base station.
Optionally, the adjusting, by the remote base station, the downlink timeslot symbol of the remote base station according to the characteristic sequence includes:
the remote base station analyzes the characteristic sequence sent by the local base station to obtain first interference information aiming at an uplink time slot symbol of the local base station;
judging whether the first interference information is first target interference information, wherein the first target interference information is information that the interference power of the uplink time slot symbol of the local base station is greater than the first threshold value;
when the first interference information is the first target interference information, the remote base station determines a plurality of second target symbols corresponding to the interference power in uplink time slot symbols of the local base station by using the first interference information, and determines first numerical values corresponding to the plurality of second target symbols;
and the remote base station stops scheduling the downlink time slot symbol corresponding to the first numerical value.
Optionally, the adjusting, by the local base station, the first target symbols includes:
and the local base station stops scheduling the first target symbols in the uplink time slot symbols.
Optionally, the receiving, by the local base station, the signature sequence sent by the remote base station to adjust a downlink timeslot symbol of the local base station includes:
the local base station analyzes the characteristic sequence sent by the remote base station to obtain first interference information aiming at the uplink time slot symbol of the remote base station;
judging whether the first interference information is target interference information, wherein the target interference information is information that the interference power of the uplink time slot symbol of the remote base station is greater than the first threshold value;
when the first interference information is the target interference information, the local base station determines a plurality of second target symbols corresponding to the interference power in uplink time slot symbols of the remote base station by using the first interference information, and determines second numerical values corresponding to the plurality of second target symbols;
and the local base station stops scheduling the downlink time slot symbol corresponding to the second numerical value.
The embodiment of the invention also discloses a self-adaptive device of the far-end interference, which is applied to an air interface system, wherein the air interface system comprises a local base station and a far-end base station, and the device comprises:
an interference power determining module, configured to obtain, by the local base station, an interference power of an uplink timeslot symbol, and determine whether the interference power is greater than a preset first threshold;
an uplink symbol determining module, configured to determine, by the local base station, a plurality of first target symbols corresponding to the interference power in the uplink timeslot symbol when the interference power is greater than a preset first threshold;
a first symbol adjusting module, configured to adjust the first target symbols by the local base station, and send a signature sequence for the interference power to the remote base station, so that the remote base station adjusts downlink timeslot symbols of the remote base station according to the signature sequence.
Optionally, the method further includes:
and the second adjusting module is used for receiving the characteristic sequence sent by the remote base station by the local base station so as to adjust the downlink time slot symbol of the local base station.
Optionally, the first symbol adjusting module includes:
a first interference information obtaining submodule, configured to analyze, by the remote base station, the signature sequence sent by the local base station, and obtain first interference information for an uplink timeslot symbol of the local base station;
an information judgment sub-module, configured to judge whether the first interference information is first target interference information, where the first target interference information is information that interference power of an uplink timeslot symbol of the local base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the first interference information is the first target interference information, determine, by the remote base station, a plurality of second target symbols corresponding to the interference power in uplink timeslot symbols of the local base station by using the first interference information, and determine first numerical values corresponding to the plurality of second target symbols;
and the far-end downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the first numerical value by the far-end base station.
Optionally, the first symbol adjusting module further includes:
and the local uplink adjusting submodule is used for stopping scheduling the plurality of first target symbols in the uplink time slot symbols by the local base station.
Optionally, the second adjusting module includes:
a second interference information determining submodule, configured to analyze, by the local base station, the signature sequence sent by the remote base station, and obtain second interference information for an uplink timeslot symbol of the remote base station;
an information judgment sub-module, configured to judge whether the second interference information is second target interference information, where the second interference information is information that interference power of an uplink timeslot symbol of the remote base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the second interference information is the target interference information, determine, by the local base station, a plurality of third target symbols corresponding to the interference power in uplink timeslot symbols of the remote base station by using the second interference information, and determine second values corresponding to the plurality of third target symbols;
and the local downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the second numerical value by the local base station.
The embodiment of the invention also discloses a device, which comprises:
one or more processors; and
one or more machine readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform one or more methods as described above.
Embodiments of the invention also disclose one or more machine-readable media having instructions stored thereon, which when executed by one or more processors, cause the processors to perform one or more of the methods described above.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the method is applied to an air interface system which comprises a local base station and a remote base station, the interference power of an uplink time slot symbol is obtained through the local base station, whether the interference power is larger than a preset first threshold value or not is judged, when the interference power is larger than the preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbol, then the local base station adjusts the plurality of first target symbols, and sends a characteristic sequence aiming at the interference power to the remote base station, so that the remote base station adjusts the downlink time slot symbol of the remote base station according to the characteristic sequence, thereby adaptively scheduling downlink time slot symbol services close to GP in real time, limiting uplink time slot symbol scheduling seriously interfered, and avoiding the remote interference to cause the base stations to block uplink services mutually, the key technical indexes and user experience of the base station interfered by the far end are guaranteed.
Drawings
Fig. 1 is a flowchart illustrating a first embodiment of a method for remote interference adaptation according to the present invention;
fig. 2 is a schematic diagram of remote interference provided in an embodiment of a method for adaptive remote interference according to the present invention;
fig. 3 is a flowchart illustrating steps of a second embodiment of a method for remote interference adaptation according to the present invention;
fig. 4 is a block diagram of an embodiment of an adaptive apparatus for far-end interference according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a flowchart illustrating steps of a first embodiment of a method for adaptive far-end interference according to the present invention is shown, where the method is applied to an air interface system, where the air interface (New Radio, NR) system may include a plurality of base stations, and the method may specifically include the following steps:
in the NR system, the NR system may include a plurality of base stations, where, for a local base station deployed in a local area, when a downlink timeslot symbol of a remote base station is transmitted over a long distance and exceeds a Guard Period (GP), the downlink timeslot symbol of the remote base station interferes with transmission of an uplink timeslot symbol of the local base station, so as to form remote interference. The remote interference has a mutual difference, and the transmission of the downlink timeslot symbol of the local base station also interferes with the transmission of the uplink timeslot symbol of the remote base station.
For TDD (Time Division duplex), different Time slots of the same frequency are used for receiving and transmitting to distinguish the uplink and downlink channels, which are not continuous in Time. One time period is sent to the base station by the user equipment, and the other time period is sent to the user equipment by the base station, so that the requirement on time synchronization between the base station and the user equipment is harsh.
The TDD employs an OFDM (Orthogonal Frequency Division Multiplexing) technique, where Δ f is a subcarrier interval of 15kHz, each subcarrier is 2048 IFFT samples, and then an LTE sampling period Ts is 1/(2048 × 15000) of 0.033 us. In LTE, the minimum unit of the frame structure time description is the sampling period Ts, and each 10ms frame consists of 101 ms subframes, each containing 2 0.5ms slots.
Wherein, for TD-SCDMA, there are 3 special time slots: the length of DwPTS (Downlink Pilot Time Slot) is 75us, the length of GP is 75us, the length of UpPTS (Uplink Pilot Time Slot) is 125us, and the total length of the special Time Slot is 0.275 ms. In the NR system, the lengths of different special timeslots DwPTS, GP, DwPTS may be configured as shown in the following table. One subframe length of TDD includes 2 slots, and in case of a normal CP configuration, one subframe length of TDD is 14 OFDM symbol periods, and in case of an extended CP configuration, one subframe length of TDD is 12 OFDM symbol periods.
In the embodiment of the invention, the base station can simultaneously cover a plurality of cells, and after the cells are activated, the base station can turn on the far-end interference switch, set the first threshold value as a judgment reference for the far-end interference power, and monitor the far-end interference through the physical layer, thereby adaptively adjusting the far-end interference.
It should be noted that the first threshold may be set according to an actual situation, based on the service affecting the user terminal, and if the uplink received interference power exceeds 15db, the normal service is affected, which is not limited in the present invention.
In a specific implementation, the local base station may monitor, in real time, the interference power of the uplink timeslot symbol of the user terminal in the cell through the physical layer, and determine the far-end interference power through the first threshold value, where when the interference power is greater than the first threshold value, it indicates that the uplink timeslot symbol in the cell is interfered by the far-end of the far-end base station, and the self-adaptive adjustment of the far-end interference needs to be performed.
It should be noted that, in the embodiment of the present invention, a local base station is taken as an example for illustration, and the local base station and a remote base station may be switched to each other in different scenarios, for example, the base station a deployed in an area a and the base station B deployed in an area B are, the base station a is a local base station in the area a, a remote base station in the area B, the base station B is a local base station in the area B, and a remote base station in the area a, and it is understood that the method provided in the embodiment of the present invention may be applied to a base station in an NR system, and the present invention is not limited to this.
in the embodiment of the present invention, after the local base station determines the remote interference power of the uplink timeslot symbols of the user terminal in the cell in real time through the physical layer, and when it is determined that the remote interference power is greater than the preset first threshold, a plurality of first target symbols affected by the remote interference power may be determined, where the first target symbols are uplink timeslot symbols affected by the remote interference in the uplink timeslot symbols in the local base station.
In a specific implementation, when the local base station monitors that the remote interference power is greater than a preset first threshold, it indicates that the downlink timeslot symbol of the remote base station is transmitted over a long distance and exceeds GP at the moment, and interferes with the transmission of the uplink timeslot symbol of the local base station to form remote interference, and the local base station may determine the uplink timeslot symbol interfered by the remote in the uplink timeslot symbols in the access cell and determine the number of uplink timeslot symbols interfered by the remote.
In the embodiment of the invention, for the uplink and downlink time slots of the NR system, the same frequency resource is shared by adopting a time division mode, namely, the uplink and the downlink work at the same frequency. When the local base station monitors that the interference power of the remote base station to the uplink time slot data is larger than a first threshold value through a physical layer, and after a first target symbol is determined, the first target symbol of the uplink time slot symbol in a cell accessed to the local base station can be adjusted, and a characteristic sequence aiming at the interference power is sent to the remote base station through an MAC (media access control) layer scheduling physical layer, so that the remote base station adjusts the downlink time slot symbol in the cell accessed to the remote base station according to the characteristic sequence.
In a specific implementation, when a local base station monitors transmission of a downlink time slot symbol of a remote base station through a physical layer and causes remote interference to transmission of an uplink time slot symbol of a cell accessed to the local base station, an uplink time slot symbol affected by the remote interference can be determined through an MAC layer, and scheduling of the uplink time slot symbol affected by the remote interference in the uplink time slot symbol is stopped.
Meanwhile, the local base station may also send a feature sequence to the remote base station through the MAC layer, and notify the remote base station that the downlink timeslot symbol transmission of the remote causes remote interference to the local base station, which requires the remote base station to adjust the downlink timeslot symbol of the cell accessed to the remote base station.
In an example of the embodiment of the present invention, a process of the remote base station adjusting a downlink timeslot symbol of a cell accessed to the remote base station may be:
the remote base station may analyze the characteristic sequence sent by the local base station to obtain first interference information for an uplink timeslot symbol of the local base station, and then may determine whether the first interference information is first target interference information, where the first target interference information is information that an interference power of the uplink timeslot symbol of the local base station is greater than a first threshold. When the first interference information is the first target interference information, the remote base station may determine, by using the first interference information, a plurality of second target symbols corresponding to the interference power in the uplink time slot symbol of the local base station, and determine first values corresponding to the plurality of second target symbols, and then the remote base station may stop scheduling the downlink time slot symbol corresponding to the first value, thereby implementing real-time adaptive control of downlink time slot symbol service scheduling near the GP by the base station according to the interference power and the feature sequence of the remote interference, and limiting the uplink time slot symbol subjected to the remote interference, avoiding the remote interference causing uplink service to be blocked by each other between the base stations, and ensuring key technical indexes and user experience of the base station subjected to the remote interference.
In an example of the embodiment of the present invention, referring to fig. 2, a far-end interference schematic diagram provided in an embodiment of a far-end interference adaptive method according to the present invention is shown, where DL is a Downlink (DL), UL is an uplink (Up Link, UL), DWPTS is a downlink pilot Time Slot, GP is a guard interval, and UPPTS is an uplink pilot Time Slot (UPPTS). Assuming that the currently adopted special slot length configuration serial number is 7 and a normal CP is adopted, the DWPTS includes 10 OFDM symbols, the GP includes 2 OFDM symbols, and the UPPTS includes 2 OFDM symbols. When the local base station monitors that the far-end interference power of the far-end base station to the local base station is greater than a first threshold value, the number of uplink time slot symbols interfered by the far end can be determined, for example, the number of uplink time slot symbols interfered by the far end is 2. First, the local base station may limit 2 uplink timeslot symbols interfered by the remote end, and does not schedule the uplink timeslot symbols, and simultaneously the local base station may send a signature sequence to the remote base station that generates the remote end interference, where the signature sequence may include the number of uplink timeslot symbols interfered by the remote end of the local base station, and the like. After the far-end base station receives the characteristic sequence, the number of uplink time slot symbols interfered by the far-end of the local base station can be determined, then 2 downlink time slot symbols of the access cell close to GP are limited, and the uplink time slot symbols are not scheduled.
It should be noted that the far-end interference has reciprocity, and the description of the far-end interference on the far-end base station is the same as that on the local base station, and the description of the far-end interference on the far-end base station is not repeated herein.
In the embodiment of the invention, the method is applied to an air interface system which comprises a local base station and a remote base station, the interference power of an uplink time slot symbol is obtained through the local base station, whether the interference power is larger than a preset first threshold value or not is judged, when the interference power is larger than the preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbol, then the local base station adjusts the plurality of first target symbols, and sends a characteristic sequence aiming at the interference power to the remote base station, so that the remote base station adjusts the downlink time slot symbol of the remote base station according to the characteristic sequence, thereby adaptively scheduling downlink time slot symbol services close to GP in real time, limiting uplink time slot symbol scheduling seriously interfered, and avoiding the remote interference to cause the base stations to block uplink services mutually, the key technical indexes and user experience of the base station interfered by the far end are guaranteed.
Referring to fig. 3, a flowchart illustrating steps of a second embodiment of a method for adaptive far-end interference according to the present invention is shown, where the method is applied to an air interface system, where the air interface (New Radio, NR) system may include a plurality of base stations, and the method may specifically include the following steps:
301, a base station acquires interference power of an uplink time slot symbol;
in a specific implementation, a base station may monitor, in real time, a far-end interference power of an uplink timeslot symbol in a cell through a physical layer, and determine a far-end interference power corresponding to a current time of the uplink timeslot symbol.
in the specific implementation, after determining the far-end interference power corresponding to the current time of the uplink time slot symbol in the cell, the physical layer determines the far-end interference power through a first threshold value, and performs self-adaptive adjustment of the far-end interference through the MAC layer according to the determination result.
And 303, performing self-adaptive adjustment on the far-end interference according to the judgment result.
In a specific implementation, the base station determines the far-end interference power through the first threshold value, and then performs adaptive adjustment on the base station according to a determination result, so as to avoid the influence of the far-end interference on continuously blocking the uplink service.
In an alternative embodiment of the present invention, step 303 may comprise the following sub-steps:
and a substep S11, when the interference power is greater than the preset first threshold, the local base station adjusts the uplink timeslot symbol, and sends a characteristic sequence for the interference power to the remote base station, so that the remote base station adjusts the downlink timeslot symbol of the remote base station according to the characteristic sequence.
In the embodiment of the invention, when the local base station monitors that the interference power is greater than the first threshold value through the physical layer, the uplink time slot symbol of the local base station can be adjusted through the MAC layer, and the characteristic sequence aiming at the interference power is sent to the remote base station through the MAC layer, so that the remote base station schedules the downlink time slot symbol accessed to the remote base station through the MAC layer.
In a specific implementation, when a local base station monitors transmission of a downlink time slot symbol of a remote base station through a physical layer and causes remote interference to transmission of an uplink time slot symbol of a cell accessed to the local base station, an uplink time slot symbol affected by the remote interference can be determined through an MAC layer, and scheduling of the uplink time slot symbol affected by the remote interference in the uplink time slot symbol is stopped.
Meanwhile, the local base station may also send a signature sequence to the remote base station through the MAC layer, where the signature sequence may include the number and number corresponding to the uplink timeslot symbol interfered by the remote end in the local base station. After the remote base station receives the characteristic sequence sent by the local base station, the characteristic sequence is analyzed through a physical layer, the number of uplink time slot symbols interfered by the remote end of the local base station and downlink time slot symbols matched with the number in the remote base station are determined, and the downlink time slot symbols are stopped being scheduled through an MAC layer, so that the base station adaptively controls downlink symbol service scheduling close to GP in real time according to the interference power and the characteristic sequence of the remote end interference, limits the uplink time slot symbols interfered by the remote end, avoids the remote end interference causing the base stations to block uplink services mutually, and guarantees key technical indexes and user experience of the base station interfered by the remote end.
And a substep S12, when the interference power is less than or equal to a preset first threshold, the local base station receives the signature sequence sent by the remote base station, so as to adjust the downlink timeslot symbol of the local base station.
In the embodiment of the present invention, when the local base station monitors that the interference power is less than or equal to the first threshold value through the physical layer, it indicates that the remote base station does not cause remote interference to the local base station at this time, and the remote interference has reciprocity, that is, although the remote base station does not cause remote interference to the local base station, the remote transmission of the downlink timeslot symbol of the local base station may cause remote interference to the uplink timeslot symbol of the remote base station, and the local base station may also receive the signature sequence sent by the remote base station through the MAC layer while monitoring the interference power of the uplink timeslot symbol of the local base station, so as to adjust the downlink timeslot symbol of the cell accessing the local base station.
In the embodiment of the present invention, after the local base station receives the feature sequence sent by the remote base station through the MAC layer, the local base station may analyze the feature sequence through the physical layer to obtain the second interference information for the uplink slot data of the remote base station, and determine the second interference information, and when the second interference information is the first target interference information, the local base station may determine a plurality of third target symbols corresponding to the interference power in the uplink slot symbol of the remote base station by using the second interference information, and determine the second numerical values corresponding to the plurality of third target symbols, so that the local base station may stop scheduling the downlink slot symbol corresponding to the second numerical value through the MAC layer.
In a specific implementation, the second target interference information is that the interference power of the uplink timeslot symbol of the remote base station is greater than a first threshold. When the second interference information is second target interference information, it indicates that the remote base station is subjected to remote interference by the local base station at the moment, the local base station can obtain the number and the number of uplink time slot symbols subjected to the remote interference in uplink time slot symbols of the remote base station through the physical layer by using the second interference information, so that the local base station can stop scheduling downlink time slot symbols with the number corresponding to the uplink time slot symbols subjected to the remote interference by the remote base station and adjacent to GP through the MAC layer, thereby realizing adaptive adjustment of uplink and downlink symbol level scheduling, avoiding the remote interference of the local base station to the remote base station, and further avoiding the influence of the remote interference on continuous uplink service blocking.
In a specific implementation, while the local base station limits downlink timeslot symbol scheduling, the remote base station may limit the uplink timeslot symbol interfered by the remote base station itself, and does not schedule the uplink timeslot symbol.
It should be noted that, for a base station subjected to far-end interference, it may send a signature sequence to a base station that generates interference, such as base station a, base station B, and base station C, corresponding to an ID identifier corresponding to each base station, and when the base station a is subjected to the far-end interference of the base station B, the base station a may send the signature sequence to the base station B according to the ID of the base station B; when the base station B is interfered by the far end of the base station C, the base station B may send the signature sequence to the base station C according to the ID of the base station C; when the base station C is interfered by the far end of the base station a, the base station C may transmit the signature sequence to the base station a according to the ID of the base station a, and the like.
In addition, when the base station a and the base station C are simultaneously subjected to the far-end interference of the base station B, the base station a and the base station C may transmit the signature sequence to the base station B according to the ID of the base station B, and perform adaptive adjustment of the far-end interference.
In the embodiment of the invention, the method is applied to an air interface system which comprises a local base station and a remote base station, the interference power of an uplink time slot symbol is obtained through the local base station, whether the interference power is larger than a preset first threshold value or not is judged, when the interference power is larger than the preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbol, then the local base station adjusts the plurality of first target symbols, and sends a characteristic sequence aiming at the interference power to the remote base station, so that the remote base station adjusts the downlink time slot symbol of the remote base station according to the characteristic sequence, thereby adaptively scheduling downlink time slot symbol services close to GP in real time, limiting uplink time slot symbol scheduling seriously interfered, and avoiding the remote interference to cause the base stations to block uplink services mutually, the key technical indexes and user experience of the base station interfered by the far end are guaranteed.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 4, a block diagram of an embodiment of an adaptive apparatus for far-end interference according to the present invention is shown, and is applied to an air interface system, where the air interface system includes a local base station and a far-end base station, and specifically includes the following modules:
an interference power determining module 401, configured to obtain, by the local base station, an interference power of an uplink timeslot symbol, and determine whether the interference power is greater than a preset first threshold;
an uplink symbol determining module 402, configured to determine, by the local base station, a plurality of first target symbols corresponding to the interference power in the uplink timeslot symbol when the interference power is greater than a preset first threshold;
a first symbol adjusting module 403, configured to adjust the first target symbols by the local base station, and send a signature sequence for the interference power to the remote base station, so that the remote base station adjusts downlink timeslot symbols of the remote base station according to the signature sequence.
In an optional embodiment of the present invention, the apparatus may further include:
and the second adjusting module is used for receiving the characteristic sequence sent by the remote base station by the local base station so as to adjust the downlink time slot symbol of the local base station.
In an optional embodiment of the present invention, the first symbol adjusting module may include:
a first interference information obtaining submodule, configured to analyze, by the remote base station, the signature sequence sent by the local base station, and obtain first interference information for an uplink timeslot symbol of the local base station;
an information judgment sub-module, configured to judge whether the first interference information is first target interference information, where the first target interference information is information that interference power of an uplink timeslot symbol of the local base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the first interference information is the first target interference information, determine, by the remote base station, a plurality of second target symbols corresponding to the interference power in uplink timeslot symbols of the local base station by using the first interference information, and determine first numerical values corresponding to the plurality of second target symbols;
and the far-end downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the first numerical value by the far-end base station.
In an optional embodiment of the present invention, the first symbol adjusting module may further include:
and the local uplink adjusting submodule is used for stopping scheduling the plurality of first target symbols in the uplink time slot symbols by the local base station.
In an optional embodiment of the present invention, the second adjusting module includes:
a second interference information determining submodule, configured to analyze, by the local base station, the signature sequence sent by the remote base station, and obtain second interference information for an uplink timeslot symbol of the remote base station;
an information judgment sub-module, configured to judge whether the second interference information is second target interference information, where the second interference information is information that interference power of an uplink timeslot symbol of the remote base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the second interference information is the target interference information, determine, by the local base station, a plurality of third target symbols corresponding to the interference power in uplink timeslot symbols of the remote base station by using the second interference information, and determine second values corresponding to the plurality of third target symbols;
and the local downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the second numerical value by the local base station.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides an apparatus, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform methods as described in embodiments of the invention.
Embodiments of the invention also provide one or more machine-readable media having instructions stored thereon, which when executed by one or more processors, cause the processors to perform the methods described in embodiments of the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. 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 terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory 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 terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The foregoing describes in detail a method and an apparatus for adaptive far-end interference adaptive to far-end interference provided by the present invention, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the foregoing embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (12)
1. A method for adaptive far-end interference, applied to an air interface system including a local base station and a far-end base station, the method comprising:
the local base station acquires interference power of an uplink time slot symbol and judges whether the interference power is greater than a preset first threshold value or not;
when the interference power is greater than a preset first threshold value, the local base station determines a plurality of first target symbols corresponding to the interference power in the uplink time slot symbols;
and the local base station adjusts the plurality of first target symbols and sends a characteristic sequence aiming at the interference power to the remote base station so that the remote base station adjusts the downlink time slot symbols of the remote base station according to the characteristic sequence.
2. The method of claim 1, further comprising:
and the local base station receives the characteristic sequence sent by the remote base station so as to adjust the downlink time slot symbol of the local base station.
3. The method according to claim 1 or 2, wherein the remote base station adjusts the downlink timeslot symbol of the remote base station according to the signature sequence, including:
the remote base station analyzes the characteristic sequence sent by the local base station to obtain first interference information aiming at an uplink time slot symbol of the local base station;
judging whether the first interference information is first target interference information, wherein the first target interference information is information that the interference power of the uplink time slot symbol of the local base station is greater than the first threshold value;
when the first interference information is the first target interference information, the remote base station determines a plurality of second target symbols corresponding to the interference power in uplink time slot symbols of the local base station by using the first interference information, and determines first numerical values corresponding to the plurality of second target symbols;
and the remote base station stops scheduling the downlink time slot symbol corresponding to the first numerical value.
4. The method of claim 1, wherein the local base station adjusts the first plurality of target symbols, comprising:
and the local base station stops scheduling the first target symbols in the uplink time slot symbols.
5. The method of claim 2, wherein the local base station receives the signature sequence sent by the remote base station to adjust downlink slot symbols of the local base station, and wherein the method comprises:
the local base station analyzes the characteristic sequence sent by the remote base station to obtain second interference information aiming at the uplink time slot symbol of the remote base station;
judging whether the second interference information is second target interference information, wherein the target interference information is information that the interference power of the uplink time slot symbol of the remote base station is greater than the first threshold value;
when the second interference information is the target interference information, the local base station determines a plurality of third target symbols corresponding to the interference power in uplink time slot symbols of the remote base station by using the second interference information, and determines second numerical values corresponding to the plurality of third target symbols;
and the local base station stops scheduling the downlink time slot symbol corresponding to the second numerical value.
6. An apparatus for adaptive far-end interference, applied to an air interface system including a local base station and a far-end base station, the apparatus comprising:
an interference power determining module, configured to obtain, by the local base station, an interference power of an uplink timeslot symbol, and determine whether the interference power is greater than a preset first threshold;
an uplink symbol determining module, configured to determine, by the local base station, a plurality of first target symbols corresponding to the interference power in the uplink timeslot symbol when the interference power is greater than a preset first threshold;
a first symbol adjusting module, configured to adjust the first target symbols by the local base station, and send a signature sequence for the interference power to the remote base station, so that the remote base station adjusts downlink timeslot symbols of the remote base station according to the signature sequence.
7. The apparatus of claim 6, further comprising:
and the second adjusting module is used for receiving the characteristic sequence sent by the remote base station by the local base station so as to adjust the downlink time slot symbol of the local base station.
8. The apparatus of claim 6 or 7, wherein the first symbol adjustment module comprises:
a first interference information obtaining submodule, configured to analyze, by the remote base station, the signature sequence sent by the local base station, and obtain first interference information for an uplink timeslot symbol of the local base station;
an information judgment sub-module, configured to judge whether the first interference information is first target interference information, where the first target interference information is information that interference power of an uplink timeslot symbol of the local base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the first interference information is the first target interference information, determine, by the remote base station, a plurality of second target symbols corresponding to the interference power in uplink timeslot symbols of the local base station by using the first interference information, and determine first numerical values corresponding to the plurality of second target symbols;
and the far-end downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the first numerical value by the far-end base station.
9. The apparatus of claim 6, wherein the first symbol adjustment module further comprises:
and the local uplink adjusting submodule is used for stopping scheduling the plurality of first target symbols in the uplink time slot symbols by the local base station.
10. The apparatus of claim 6, wherein the second adjusting module comprises:
a second interference information determining submodule, configured to analyze, by the local base station, the signature sequence sent by the remote base station, and obtain second interference information for an uplink timeslot symbol of the remote base station;
an information judgment sub-module, configured to judge whether the second interference information is second target interference information, where the second interference information is information that interference power of an uplink timeslot symbol of the remote base station is greater than the first threshold;
a downlink symbol determining submodule, configured to, when the second interference information is the target interference information, determine, by the local base station, a plurality of third target symbols corresponding to the interference power in uplink timeslot symbols of the remote base station by using the second interference information, and determine second values corresponding to the plurality of third target symbols;
and the local downlink adjusting submodule is used for stopping scheduling the downlink time slot symbol corresponding to the second numerical value by the local base station.
11. An apparatus, comprising:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of one or more of claims 1-5.
12. One or more machine readable media having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method of one or more of claims 1-5.
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| CN201910309035.6A CN111836387B (en) | 2019-04-17 | 2019-04-17 | Self-adaptive method and device for far-end interference |
| PCT/CN2020/082318 WO2020211633A1 (en) | 2019-04-17 | 2020-03-31 | Adaptive method for far-end crosstalk, and device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018045516A1 (en) * | 2016-09-07 | 2018-03-15 | 华为技术有限公司 | Communication method and base station |
| CN108882303A (en) * | 2017-05-08 | 2018-11-23 | 大唐移动通信设备有限公司 | A kind of bypassing method and device of interference |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101360320B (en) * | 2007-07-30 | 2011-11-30 | 电信科学技术研究院 | Bypassing method for co-channel interference between base stations, control apparatus and base station device |
| CN102958092A (en) * | 2011-08-26 | 2013-03-06 | 华为技术有限公司 | Interference signal code power detection method, user access method and access equipment |
| US9001920B2 (en) * | 2013-02-19 | 2015-04-07 | At&T Intellectual Property I, Lp | Apparatus and method for interference cancellation in communication systems |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018045516A1 (en) * | 2016-09-07 | 2018-03-15 | 华为技术有限公司 | Communication method and base station |
| CN108882303A (en) * | 2017-05-08 | 2018-11-23 | 大唐移动通信设备有限公司 | A kind of bypassing method and device of interference |
Non-Patent Citations (1)
| Title |
|---|
| 刘毅等: "《TD-LTE大气波导效应导致干扰研究》", 《移动通信》 * |
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