CN114727303A - Method and device for controlling beam cooperation between stations and computer readable storage medium - Google Patents

Method and device for controlling beam cooperation between stations and computer readable storage medium Download PDF

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Publication number
CN114727303A
CN114727303A CN202110007091.1A CN202110007091A CN114727303A CN 114727303 A CN114727303 A CN 114727303A CN 202110007091 A CN202110007091 A CN 202110007091A CN 114727303 A CN114727303 A CN 114727303A
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China
Prior art keywords
interference
station
csi
interface
uplink
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CN202110007091.1A
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Chinese (zh)
Inventor
郝悦
江天明
王大鹏
陈卓
邓伟
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Priority to CN202110007091.1A priority Critical patent/CN114727303A/en
Publication of CN114727303A publication Critical patent/CN114727303A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • 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
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • 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
    • 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
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the invention provides an inter-station beam cooperative control method, an inter-station beam cooperative control device and a computer readable storage medium, wherein the method comprises the following steps: exchanging channel state information reference signal (CSI-RS) configuration information with a base station of a neighboring cell through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side; the interfered station judges whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink; when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation; and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction.

Description

Method and device for controlling beam cooperation between stations and computer readable storage medium
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for inter-station beam cooperative control, and a computer-readable storage medium.
Background
When two TDD systems use the same or close proximity frequency, if the time slots are not synchronized, cross-slot interference occurs, for example, in scenarios where the 4.9GHz NR public network employs 7D3U, the industry network employs 1D3U, and/or the SUL and stock 4G. When the macro station generates cross time slot interference to the macro station and the macro station generates cross time slot interference to the pico station, the space isolation of two TDD systems is difficult to meet the requirement, and the performance of the system is greatly reduced. Before interference elimination or avoidance, an interference detection means is needed to locate or reduce the position and mutual interference relationship of the interference source.
Disclosure of Invention
In view of the above, embodiments of the present invention desirably provide an inter-station beam cooperative control method, an apparatus, and a computer-readable storage medium.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides an inter-station beam cooperative control method, which is applied to a disturbed station and comprises the following steps:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation;
and sending an interference indication to the interference giving station for the interference giving station to adjust the beam power and/or the beam direction.
Wherein, the determining whether the uplink of the interfered station is interfered based on the adjacent cell beam received by the uplink comprises:
and judging whether the uplink of the interfered station is interfered or not based on the RSRP and/or the signal-to-interference-plus-noise ratio SINR of the uplink received CSI-RS downlink reference signal.
Wherein the determining whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR includes:
for the uplink received CSI-RS, the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to other beams is judged to be larger than a preset threshold THR, and then the beam is considered to have interference.
Wherein the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
Wherein the determining, based on the CSI-RS beam mapping relationship, the interfering station corresponding to the interference includes:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
The embodiment of the invention also provides an interstation beam cooperative control method, which is applied to an interference station and comprises the following steps:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
adjustments to the beam power and/or beam direction are made.
Before the CSI-RS configuration information is exchanged with the neighboring base station, the method further includes:
and scanning the beam level CSI-RS in a periodic mode, and establishing a CSI-RS beam mapping relation by the network management side.
Wherein the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
The embodiment of the invention also provides an inter-station beam cooperative control device, which is applied to a disturbed station and comprises the following components:
the first transceiver module is used for interacting channel state information reference signal CSI-RS configuration information with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side; the interference indication is also sent to the interference station, and the interference station is used for adjusting the beam power and/or the beam direction;
the interference judging module is used for judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
and the determining module is used for determining the interference station corresponding to the interference based on the CSI-RS beam mapping relation when the interference judging module judges that the interference is received.
The embodiment of the invention also provides an inter-station beam cooperative control device, which is applied to an interference station and comprises the following steps:
the second transceiver module is used for interacting channel state information reference signal CSI-RS configuration information with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side; and further for receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
and the processing module is used for adjusting the beam power and/or the beam direction.
The embodiment of the invention also provides an inter-station beam cooperative control device, which comprises: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the above method when running the computer program.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the above-mentioned method.
The inter-station beam cooperative control method, the inter-station beam cooperative control device and the computer-readable storage medium provided by the embodiment of the invention exchange channel state information reference signal (CSI-RS) configuration information with a neighboring base station through an Xn interface, an S1 interface, an NG interface, a relay or an air interface, and are used for establishing a CSI-RS beam mapping relationship at a network management side or a base station side; the interfered station judges whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink; when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation; and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction. The embodiment of the invention can position the interference source problem between base stations (such as macro stations and macro stations, macro stations and pico stations, and pico stations), and can reduce the interference degree of cross time slots, improve the uplink throughput of cells and improve the system performance by combining the adjustment of the interference applying stations on beams and/or power.
Drawings
Fig. 1 is a first flowchart illustrating an inter-station beam cooperative control method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a inter-station beam cooperative control method according to an embodiment of the present invention;
fig. 3 is a first schematic structural diagram of an inter-station beam cooperative control apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second inter-station beam cooperative control apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third inter-station beam cooperative control apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a scrambling station periodically scanning a beam level CSI-RS according to an embodiment of the present disclosure.
Detailed Description
The invention is described below with reference to the figures and examples.
When the macro station generates cross time slot interference to the macro station and the macro station generates cross time slot interference to the pico station, the space isolation of two TDD systems is difficult to meet the requirement, and the performance of the system is greatly reduced. Moreover, before interference cancellation or avoidance, an interference detection means is needed to locate or reduce the position of the interference source and the mutual interference relationship, and the related solution provided by the cross slot problem is not temporarily available in the industry.
Based on this, an embodiment of the present invention provides an inter-station beam cooperative control method, as shown in fig. 1, where the method is applied to a victim station, and includes:
step 100: the CSI-RS configuration information is interacted with the base station of the adjacent cell through an Xn interface, an S1 interface, an NG interface, a relay or an air interface, and the CSI-RS configuration information is used for establishing a CSI-RS wave beam mapping relation at a network management side or a base station side;
step 101: judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
step 102: when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation;
step 103: and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction.
The embodiment of the invention can position the interference source problem between base stations (such as macro stations and macro stations, macro stations and pico stations, and pico stations), and can reduce the interference degree of cross time slots, improve the uplink throughput of cells and improve the system performance by combining the adjustment of the interference applying stations on beams and/or power.
Here, the victim station interacts CSI-RS configuration information with the neighboring base station through an Xn interface, or an S1 interface, or a relay, or an air interface. And exchanging CSI-RS configuration information between the base stations with different frame structure configurations.
In this embodiment of the present invention, the determining, based on the neighboring cell beam received by the uplink, whether the uplink of the victim station is interfered includes:
and judging whether the uplink of the interfered station is interfered or not based on the received power RSRP and/or the signal-to-interference-plus-noise ratio SINR of the uplink received CSI-RS downlink reference signal.
In this embodiment of the present invention, the determining whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR includes:
for the uplink received CSI-RS, the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to other beams is judged to be larger than a preset threshold THR, and then the beam is considered to have interference.
In this embodiment of the present invention, the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence relationship between the following items:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
In practical application, a network management side can maintain a CSI-RS beam mapping table, and the items are in one-to-one correspondence.
In this embodiment of the present invention, the determining, based on the CSI-RS beam mapping relationship, the interference applying station corresponding to the interference includes:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
In the embodiment of the present invention, the keeping of the interference indication consistent with the CSI-RS sent by the interfering station to the victim station includes: the base station identifier, the cell identifier, the CSI-RS resource identifier and other contents can be indexed from the network management side.
The embodiment of the present invention further provides an inter-station beam cooperative control method, as shown in fig. 2, the method is applied to an interfering station, and includes:
step 200: the CSI-RS configuration information is interacted with the base station of the adjacent cell through an Xn interface, an S1 interface, an NG interface, a relay or an air interface, and the CSI-RS configuration information is used for establishing a CSI-RS wave beam mapping relation at a network management side or a base station side;
step 201: receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
step 202: adjustments to the beam power and/or beam direction are made.
In another embodiment of the present invention, before the interacting CSI-RS configuration information with the neighboring base station, the method further includes:
and scanning the beam level CSI-RS in a periodic mode, and establishing a CSI-RS beam mapping relation by the network management side.
In this embodiment of the present invention, the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence relationship between the following items:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
In order to implement the foregoing method embodiment, an embodiment of the present invention further provides an inter-station beam cooperative control apparatus, as shown in fig. 3, where the apparatus is applied to a victim station, and includes:
the first transceiver module 300 is configured to interact with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface to obtain CSI-RS configuration information, and establish a CSI-RS beam mapping relationship at a network management side or a base station side; the interference indication is also sent to the interference station, and the interference station is used for adjusting the beam power and/or the beam direction;
an interference determining module 301, configured to determine whether an uplink of the interfered station is interfered based on an uplink-received neighboring cell beam;
a determining module 302, configured to determine, when the interference determining module determines that the interference is received, an interfering station corresponding to the interference based on the CSI-RS beam mapping relationship.
In this embodiment of the present invention, the determining module 301, based on the neighboring cell beam received by the uplink, determines whether the uplink of the interfered station is interfered, including:
and judging whether the uplink of the interfered station is interfered or not based on the received power RSRP and/or the signal-to-interference-plus-noise ratio SINR of the uplink received CSI-RS downlink reference signal.
In this embodiment of the present invention, the determining module 301 determines whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR, including:
for the uplink received CSI-RS, the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to other beams is judged to be larger than a preset threshold THR, and then the beam is considered to have interference.
In this embodiment of the present invention, the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence relationship between the following items:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
In practical application, a network management side can maintain a CSI-RS beam mapping table, and the items are in one-to-one correspondence.
In this embodiment of the present invention, the determining module 302 determines, based on the CSI-RS beam mapping relationship, the interference applying station corresponding to the interference, including:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
Here, there is an interaction of CSI-RS configuration information between base stations configured in an inter-frame structure.
An embodiment of the present invention further provides an inter-station beam cooperative control apparatus, as shown in fig. 4, where the apparatus is applied to an interfering station, and includes:
the second transceiver module 401 is configured to interact with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface to establish CSI-RS beam mapping relationship between CSI-RS configuration information and a network management side or a base station side; and further for receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
a processing module 402, configured to perform adjustment of beam power and/or beam direction.
In another embodiment of the present invention, as shown in fig. 5, the apparatus further includes: a scanning module 403, before the second transceiver module 401 interacts CSI-RS configuration information with the neighboring base station,
the scanning module 403 is configured to scan a beam level CSI-RS in a periodic manner, and is configured to establish a CSI-RS beam mapping relationship on the network management side.
In this embodiment of the present invention, the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence relationship between the following items:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
The embodiment of the invention also provides an inter-station beam cooperative control device, which comprises: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to execute, when running the computer program:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation;
and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction.
When the uplink of the interfered station is judged to be interfered based on the adjacent cell beam received by the uplink, the processor is further configured to execute:
and judging whether the uplink of the interfered station is interfered or not based on the received power RSRP and/or the signal-to-interference-plus-noise ratio SINR of the uplink received CSI-RS downlink reference signal.
When the determining whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR, the processor is further configured to execute, when running the computer program:
for the uplink received CSI-RS, it is determined that the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to another beam is greater than a preset threshold THR, and it is determined that the beam has interference.
Wherein the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
When the interference station corresponding to the interference is determined based on the CSI-RS beam mapping relationship, the processor is further configured to execute, when the computer program is run, the following steps:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
The embodiment of the invention also provides an inter-station beam cooperative control device, which comprises: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to execute, when running the computer program:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
adjustments to the beam power and/or beam direction are made.
Before the CSI-RS configuration information is exchanged with the neighboring base station, the processor is further configured to execute, when the computer program is run:
and scanning the beam level CSI-RS in a periodic mode, and establishing a CSI-RS beam mapping relation by the network management side.
It should be noted that: in the device provided in the foregoing embodiment, when performing inter-station beam cooperative control, only the division of each program module is described as an example, and in practical applications, the processing allocation may be completed by different program modules as needed, that is, the internal structure of the apparatus is divided into different program modules to complete all or part of the processing described above. In addition, the apparatus provided in the above embodiments and the corresponding method embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments and are not described herein again.
In an exemplary embodiment, the embodiment of the present invention also provides a computer-readable storage medium, which may be a Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disc, or CD-ROM; or may be a variety of devices including one or any combination of the above memories, such as a mobile phone, computer, tablet device, personal digital assistant, etc.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation;
and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction.
When the uplink of the interfered station is judged to be interfered based on the adjacent cell wave beam received by the uplink, and when the computer program is executed by the processor, the computer program further executes:
and judging whether the uplink of the interfered station is interfered or not based on the received power RSRP and/or SINR of the uplink received CSI-RS downlink reference signal.
When the determining whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR, the computer program is executed by a processor to further perform:
for the uplink received CSI-RS, the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to other beams is judged to be larger than a preset threshold THR, and then the beam is considered to have interference.
Wherein the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
When the interference station corresponding to the interference is determined based on the CSI-RS beam mapping relation, when the computer program is executed by a processor, the computer program further executes:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
adjustments to beam power and/or beam direction are made.
Before the CSI-RS configuration information is exchanged with the neighboring base station, when the computer program is executed by the processor, the method further performs:
and scanning the beam level CSI-RS in a periodic mode, and establishing a CSI-RS beam mapping relation by the network management side.
The present invention is described below with reference to scene embodiments.
The scenario involved in this embodiment can be as follows:
scene one: for macro stations and macro stations, downlink-to-uplink interference and simultaneous slot interference;
scene two: aiming at a macro station and a pico station, uplink interference of a macro station downlink to the pico station, or uplink interference of the pico station downlink to the macro station, and simultaneous slot interference;
scene three: for pico-stations and pico-stations, downlink to uplink interference, and simultaneous slot interference.
It should be noted that: due to the uncertainty of the mobile position of the terminal and the small transmission power, the embodiment does not relate to the interference scene related to the terminal for the moment.
For the above scenario, the flow of the CSI-RS inter-station beam based cooperative control method provided in this embodiment is as follows:
the method comprises the following steps: the network management side monitors whether a base station configured with a different frame structure exists, and if so, all potential interfering base stations (interfering stations) in the range scan the CSI-RS in a periodic manner, as shown in FIG. 6, where different beams correspond to different CSI-RS resource identifiers (resource IDs) (base station implementation scheme). Meanwhile, maintaining a mapping table of beam IDs and CSI-RS resource IDs at the network management side can be shown in table 1 below:
Figure BDA0002883943530000121
TABLE 1
Step two: the base station cluster interacts the CSI-RS configuration information through an Xn interface, or an S1 interface, or a relay, or an air interface, etc. (for example, the perturbation station sends the CSI-RS configuration information to the perturbation station through the above interface), as follows:
Figure BDA0002883943530000122
wherein the CSI-RS configuration information may include: NZP-CSI-RS-resource id, scrambling identification (scramblingID) and other information; meanwhile, the network management side mapping table is supplemented with a scramblingID (standard definition of 10bit length) and eNB-ID and cell ID index relationship (as shown in Table 2), so that a one-to-one mapping relationship exists between CSI-RS beam ID-NZP-CSI-RS-resource ID-cell ID-eNB-ID.
Figure BDA0002883943530000131
TABLE 2
Step three: the interfered base station receives the adjacent area wave beam in the uplink and judges whether the uplink is subjected to strong interference (namely the interference) and the source of the strong interference; if the interference is strong interference, the corresponding eNB-ID, the cell ID and the beam ID are obtained by inquiring the table 2 according to the resource ID of the strong interference, and a strong interference indication is sent to the interference base station.
The strong interference is determined according to CSI-RS RSRP, which may specifically be as follows:
when receiving the CSI-RS reference signal, if a ratio of RSRP received by a resource ID (for example, ID ═ 1) corresponding to a certain beam to RSRP received by resource IDs (ID ═ 2,3,4, … 15) corresponding to other beams is greater than a preset threshold THR, it is considered that there is strong interference in the beam corresponding to resource ID ═ 1.
Step four: after receiving the indication of 'strong interference' of the neighboring cell, the interfering base station comprehensively judges in the effective time, and decides whether to adjust the power or stagger the beam direction, thereby effectively avoiding the strong interference of the strongest beam of the macro station to the service cell.
Therefore, by the CSI-RS inter-station beam cooperative control scheme, the interference source problem of the macro station and the macro station, the interference source problem of the macro station and the interference source problem of the pico station can be positioned, the cross time slot interference degree can be reduced by combining the adjustment of the beam and the power, the uplink throughput of the cell is improved, and the system performance is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (12)

1. An inter-station beam cooperative control method is applied to a victim station, and comprises the following steps:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
when interference is judged, determining a disturbance station corresponding to the interference based on the CSI-RS beam mapping relation;
and sending an interference indication to the interference applying station, wherein the interference applying station is used for adjusting the beam power and/or the beam direction.
2. The method of claim 1, wherein the determining whether the uplink of the victim station is interfered based on the uplink received neighboring cell beam comprises:
and judging whether the uplink of the interfered station is interfered or not based on the RSRP and/or the signal-to-interference-plus-noise ratio SINR of the uplink received CSI-RS downlink reference signal.
3. The method of claim 2, wherein the determining whether the uplink of the victim station is interfered based on the uplink received CSI-RS RSRP and/or SINR comprises:
for the uplink received CSI-RS, the ratio of the RSRP received by the resource identifier resource ID corresponding to one beam to the RSRP received by the resource identifier resource ID corresponding to other beams is judged to be larger than a preset threshold THR, and then the beam is considered to have interference.
4. The method of claim 1, wherein the CSI-RS beam mapping relationship comprises, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
5. The method of claim 1, wherein the determining the interfering station corresponding to the interference based on the CSI-RS beam mapping relationship comprises:
and determining a base station identifier, a cell identifier and a beam identifier ID corresponding to the interference based on the resource ID of the interference beam and the CSI-RS beam mapping relation established by the network management side.
6. An inter-station beam cooperative control method is applied to an interference station and comprises the following steps:
interacting channel state information reference signal CSI-RS configuration information with a neighboring cell base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side;
receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
adjustments to the beam power and/or beam direction are made.
7. The method of claim 6, wherein before the exchanging the CSI-RS configuration information with the neighboring base station, the method further comprises:
and scanning the CSI-RS at the beam level in a periodic mode, and establishing a CSI-RS beam mapping relation by the network management side.
8. The method of claim 6, wherein the CSI-RS beam mapping relationship includes, but is not limited to, a one-to-one correspondence between:
the method comprises the steps of base station identification, cell identification, beam identification ID, CSI-RS resource identification and Scrambling identification Scrambling ID.
9. An inter-station beam cooperative control device, which is applied to a victim station, comprises:
the first transceiver module is used for interacting channel state information reference signal CSI-RS configuration information with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side; the interference indication is also sent to the interference station, and the interference station is used for adjusting the beam power and/or the beam direction;
the interference judging module is used for judging whether the uplink of the interfered station is interfered or not based on the adjacent cell wave beam received by the uplink;
and the determining module is used for determining the interference station corresponding to the interference based on the CSI-RS beam mapping relation when the interference judging module judges that the interference is received.
10. An inter-station beam cooperative control device, which is applied to an interfering station, comprises:
the second transceiver module is used for interacting channel state information reference signal CSI-RS configuration information with a neighboring base station through an Xn interface, or an S1 interface, or an NG interface, or a relay, or an air interface, and establishing a CSI-RS beam mapping relationship at a network management side or a base station side; and further for receiving an interference indication; the interference indication is: when the interfered station judges that the interference is received, determining the interference station corresponding to the interference to send based on the CSI-RS wave beam mapping relation;
and the processing module is used for adjusting the beam power and/or the beam direction.
11. An inter-station beam cooperative control apparatus, comprising: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is adapted to perform the steps of the method of any one of claims 1 to 5 or to perform the steps of the method of any one of claims 6 to 8 when running the computer program.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5 or carries out the steps of the method of any one of claims 6 to 8.
CN202110007091.1A 2021-01-05 2021-01-05 Method and device for controlling beam cooperation between stations and computer readable storage medium Pending CN114727303A (en)

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