CN109391973B - Cross link interference measurement method, device and computer readable storage medium - Google Patents
Cross link interference measurement method, device and computer readable storage medium Download PDFInfo
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- CN109391973B CN109391973B CN201710693460.0A CN201710693460A CN109391973B CN 109391973 B CN109391973 B CN 109391973B CN 201710693460 A CN201710693460 A CN 201710693460A CN 109391973 B CN109391973 B CN 109391973B
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Abstract
The embodiment of the invention provides a cross link interference measurement method, equipment and a computer readable storage medium, wherein when the method is applied to a base station with a downlink subframe configuration direction, the method comprises the following steps: receiving measurement reference signal configuration information sent by an adjacent base station, and sending the measurement reference signal configuration information to a cell terminal; the subframe configuration direction of the adjacent base station is uplink; receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a device, and a computer-readable storage medium for measuring cross link interference.
Background
There are two duplex modes in the conventional mobile communication system, namely: frequency Division Duplex (FDD) and Time Division Duplex (TDD). With the development of communication technology, it is difficult for conventional TDD and FDD systems to better match the diversified service requirements of 5G networks. In order to meet the requirement of the duplex technology fusion of a new future 5G air interface, a flexible duplex technology is provided in the industry.
The flexible duplex technology breaks through a fixed configuration mode of uplink and downlink resources in a traditional cellular network system, and adaptively adjusts the uplink and downlink resources according to business requirements, so that the frequency spectrum utilization rate is improved, and the difference between FDD and TDD is indirectly eliminated.
At present, the flexible duplex technology can dynamically allocate uplink and downlink resources according to the uplink and downlink service change conditions of a cell, so that the ratio of uplink and downlink subframe resources is matched with the ratio of uplink and downlink service traffic, and the utilization rate of system resources is effectively improved. However, when neighboring cells transmit information in different directions (uplink or downlink) on the same time-frequency resource, cross-link interference is caused.
Disclosure of Invention
In view of the above, embodiments of the present invention are directed to a method, an apparatus, and a computer-readable storage medium for cross link interference measurement.
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 a cross link interference measuring method, which is applied to a base station with a downlink subframe configuration direction and comprises the following steps:
receiving measurement reference signal configuration information sent by an adjacent base station, and sending the measurement reference signal configuration information to a cell terminal; the subframe configuration direction of the adjacent base station is uplink;
receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
Before receiving the sounding reference signal configuration information sent by the neighboring base station, the method further includes:
interacting respective subframe direction to be configured with the adjacent base station;
and determining that the subframe configuration directions of the base station and the adjacent base station are different based on the subframe configuration direction.
Wherein the measurement reference signal configuration information includes: and sending time frequency resource configuration information and/or a reference signal sending period.
The embodiment of the invention also provides a cross link interference measuring method, which is applied to a base station with an uplink subframe configuration direction and comprises the following steps:
sending the configuration information of the measurement reference signal to an adjacent base station and sending the configuration information of the measurement reference signal to a terminal of the cell; the subframe configuration direction of the adjacent base station is downlink;
receiving interference measurement information sent by the adjacent base station, and performing subsequent cooperation between the cell base station and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
Wherein, before sending the sounding reference signal configuration information to the neighboring base station, the method further includes:
and interacting respective subframe direction to be configured with the adjacent base station.
Wherein the measurement reference signal configuration information includes: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a base station, including: 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.
The embodiment of the invention also provides a cross link interference measuring method, which is applied to a terminal and comprises the following steps:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is downlink;
measuring a measurement reference signal sent by a terminal at the side of an adjacent base station, and acquiring interference measurement information between the terminal and the terminal at the side of the adjacent base station based on a measurement result; the subframe configuration direction of the adjacent base station is uplink;
and uploading the interference measurement information to the serving base station.
When or after obtaining the interference measurement information between the terminal and the adjacent base station side terminal, the method further includes:
and establishing a corresponding interference list based on the acquired interference measurement information between the terminal and the adjacent base station side terminal.
Wherein the measurement reference signal configuration information includes: and sending time frequency resource configuration information and/or a reference signal sending period.
The embodiment of the invention also provides a cross link interference measuring method, which is applied to a terminal and comprises the following steps:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is uplink;
sending a measurement reference signal to an adjacent base station side terminal, wherein the measurement reference signal is used for the adjacent base station side terminal to acquire interference information between the adjacent base station side terminal and a cell terminal through the measurement reference signal; and the subframe configuration direction of the adjacent base station is downlink.
Wherein the measurement reference signal configuration information includes: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a terminal, including: 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.
In the method, the device and the computer-readable storage medium for measuring cross link interference provided by the embodiment of the invention, a base station with a downlink subframe configuration direction receives measurement reference signal configuration information sent by an adjacent base station, and sends the measurement reference signal configuration information to a terminal of a local cell; the subframe configuration direction of the adjacent base station is uplink; receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell. The embodiment of the invention utilizes the measurement reference signal to carry out the cross link interference measurement between users, and can enable the flexible duplex system to carry out effective interference deletion or interference suppression according to the interference measurement information obtained by the terminal serving the downlink base station in the subframe direction.
Drawings
Fig. 1 is a first flowchart of a cross link interference measurement method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a cross link interference measurement method according to an embodiment of the present invention;
fig. 3 is a third schematic flow chart of a cross link interference measurement method according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a cross link interference measurement method according to an embodiment of the present invention;
fig. 5 is a first schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to the second embodiment of the present invention;
fig. 7 is a first schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a terminal structure according to the embodiment of the present invention;
fig. 9 is a flowchart of inter-terminal interference measurement according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a scenario of measuring cross link interference according to the second embodiment of the present invention;
fig. 11 is a schematic diagram of a scenario of measuring cross link interference according to the third embodiment of the present invention.
Detailed Description
The invention is described below with reference to the figures and examples.
An embodiment of the present invention provides a method for measuring cross link interference, as shown in fig. 1, where the method is applied to a base station whose subframe configuration direction is downlink, and the method includes:
step 101: receiving measurement reference signal configuration information sent by an adjacent base station, and sending the measurement reference signal configuration information to a cell terminal; the subframe configuration direction of the adjacent base station is uplink;
step 102: receiving interference measurement information uploaded by a terminal of a cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station (the base station with a downlink subframe configuration direction) of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
In this embodiment of the present invention, before receiving the sounding reference signal configuration information sent by the neighboring base station, the method further includes:
interacting respective subframe direction to be configured with the adjacent base station;
and determining that the subframe configuration directions of the base station are different from those of the adjacent base stations based on the subframe direction to be configured.
Optionally, the measurement reference signal configuration information may include: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a cross link interference measurement method, as shown in fig. 2, where the method is applied to a base station in which a subframe configuration direction is uplink, and includes:
step 201: sending the configuration information of the measurement reference signal to an adjacent base station and sending the configuration information of the measurement reference signal to a terminal of the cell; the subframe configuration direction of the adjacent base station is downlink;
step 202: receiving interference measurement information sent by the adjacent base station, wherein the interference measurement information is used for subsequent cooperation between a base station (a base station with an uplink subframe configuration direction) of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
In this embodiment of the present invention, before sending the srs configuration information to the neighboring base station, the method further includes:
and interacting respective subframe direction to be configured with the adjacent base station.
Optionally, the measurement reference signal configuration information may include: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a method for measuring cross link interference, as shown in fig. 3, where the method is applied to a terminal, and includes:
step 301: receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is downlink;
step 302: measuring a measurement reference signal sent by a terminal at the side of an adjacent base station, and acquiring interference measurement information between the terminal and the terminal at the side of the adjacent base station based on a measurement result; the subframe configuration direction of the adjacent base station is uplink;
step 303: and uploading the interference measurement information to the serving base station.
In this embodiment of the present invention, when or after obtaining interference measurement information between itself and an adjacent base station side terminal, the method further includes:
and establishing a corresponding interference list based on the acquired interference measurement information between the terminal and the adjacent base station side terminal.
Optionally, the measurement reference signal configuration information may include: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a method for measuring cross link interference, as shown in fig. 4, where the method is applied to a terminal, and includes:
step 401: receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is uplink;
step 402: sending a measurement reference signal to an adjacent base station side terminal, wherein the measurement reference signal is used for the adjacent base station side terminal to acquire interference information between the adjacent base station side terminal and a cell terminal through the measurement reference signal; and the subframe configuration direction of the adjacent base station is downlink.
Optionally, the measurement reference signal configuration information may include: and sending time frequency resource configuration information and/or a reference signal sending period.
An embodiment of the present invention further provides a base station, as shown in fig. 5, where a subframe configuration direction of the base station 50 is downlink, and the method includes:
a receiver 501, configured to receive measurement reference signal configuration information sent by a neighboring base station; receiving interference measurement information uploaded by a terminal of the cell; the subframe configuration direction of the adjacent base station is uplink;
a transmitter 502, configured to send the srs configuration information to a cell terminal; sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
In the embodiment of the present invention, the base station further includes: a processor 503; accordingly, the method can be used for solving the problems that,
the receiver 501 and the transmitter 502 are configured to interact with the neighboring base stations in respective subframe configuring directions;
the processor 503 is configured to determine that the subframe configuration directions of the base station 50 and the neighboring base stations are different based on the subframe intended configuration direction.
An embodiment of the present invention further provides a base station, and as shown in fig. 6, the configuring direction of the subframe of the base station 60 for uplink includes:
a transmitter 602, configured to send the sounding reference signal configuration information to an adjacent base station, and send the sounding reference signal configuration information to the cell terminal; the subframe configuration direction of the adjacent base station is downlink;
a receiver 601, configured to receive interference measurement information sent by the neighboring base station, and configured to perform subsequent cooperation between the local cell base station and the neighboring base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
In the embodiment of the present invention, before the transmitter 602 sends the srs configuration information to the neighboring base stations,
the receiver 601 and the transmitter 602 are further configured to interact with the neighboring base station in the respective subframe configuring direction.
An embodiment of the present invention further provides a terminal, as shown in fig. 7, where the terminal 70 includes:
a receiver 701, configured to receive measurement reference signal configuration information sent by a serving base station of a local cell; the subframe configuration direction of the service base station is downlink;
a processor 702, configured to measure a measurement reference signal sent by a terminal on an adjacent base station side, and obtain interference measurement information between the processor and the terminal on the adjacent base station side based on a measurement result; the subframe configuration direction of the adjacent base station is uplink;
a transmitter 703 configured to upload the interference measurement information to the serving base station.
In the embodiment of the present invention, when or after the processor 702 obtains the interference measurement information between itself and the adjacent base station side terminal,
and the method is also used for establishing a corresponding interference list based on the acquired interference measurement information between the terminal and the adjacent base station side terminal.
An embodiment of the present invention further provides a terminal, as shown in fig. 8, where the terminal 80 includes:
a receiver 801, configured to receive measurement reference signal configuration information sent by a serving base station of a local cell; the subframe configuration direction of the service base station is uplink;
a transmitter 802, configured to send a sounding reference signal to an adjacent base station side terminal, where the sounding reference signal is used for the adjacent base station side terminal to obtain interference information between the adjacent base station side terminal and a terminal in a local cell; and the subframe configuration direction of the adjacent base station is downlink.
The embodiment of the present invention further provides a base station (the subframe configuration direction is downlink), including: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to, when running the computer program, perform:
receiving measurement reference signal configuration information sent by an adjacent base station, and sending the measurement reference signal configuration information to a cell terminal; the subframe configuration direction of the adjacent base station is uplink;
receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
The processor is further configured to, when executing the computer program, perform:
before the measurement reference signal configuration information sent by the adjacent base station is received, interacting respective subframe direction to be configured with the adjacent base station;
and determining that the subframe configuration directions of the base station and the adjacent base station are different based on the subframe configuration direction.
The embodiment of the present invention further provides a base station (the subframe configuration direction is uplink), including: 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:
sending the configuration information of the measurement reference signal to an adjacent base station and sending the configuration information of the measurement reference signal to a terminal of the cell; the subframe configuration direction of the adjacent base station is downlink;
receiving interference measurement information sent by the adjacent base station, and performing subsequent cooperation between the cell base station and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
The processor is further configured to, when executing the computer program, perform:
and before the configuration information of the measurement reference signal is sent to the adjacent base station, interacting respective subframe direction to be configured with the adjacent base station.
An embodiment of the present invention further provides a terminal, including: 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:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is downlink;
measuring a measurement reference signal sent by a terminal at the side of an adjacent base station, and acquiring interference measurement information between the terminal and the terminal at the side of the adjacent base station based on a measurement result; the subframe configuration direction of the adjacent base station is uplink;
and uploading the interference measurement information to the serving base station.
The processor is further configured to, when executing the computer program, perform:
and when or after the interference measurement information between the self terminal and the adjacent base station side terminal is acquired, establishing a corresponding interference list based on the acquired interference measurement information between the self terminal and the adjacent base station side terminal.
An embodiment of the present invention further provides a terminal, including: 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:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is uplink;
sending a measurement reference signal to an adjacent base station side terminal, wherein the measurement reference signal is used for the adjacent base station side terminal to acquire interference information between the adjacent base station side terminal and a cell terminal through the measurement reference signal; and the subframe configuration direction of the adjacent base station is downlink.
It should be noted that: in the foregoing embodiment, when performing interference measurement, the base station and the terminal provided in the foregoing embodiment are only illustrated by dividing the program modules, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules, so as to complete all or part of the processing described above. In addition, the base station and the terminal provided in the above embodiments belong to the same concept as the corresponding method embodiments, and the specific implementation process thereof is described in the method embodiments and will not be 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 provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program performs:
receiving measurement reference signal configuration information sent by an adjacent base station, and sending the measurement reference signal configuration information to a cell terminal; the subframe configuration direction of the adjacent base station is uplink;
receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
The computer program, when executed by the processor, further performs:
before the measurement reference signal configuration information sent by the adjacent base station is received, interacting respective subframe direction to be configured with the adjacent base station;
and determining that the subframe configuration directions of the base station and the adjacent base station are different based on the subframe configuration direction.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program performs:
sending the configuration information of the measurement reference signal to an adjacent base station and sending the configuration information of the measurement reference signal to a terminal of the cell; the subframe configuration direction of the adjacent base station is downlink;
receiving interference measurement information sent by the adjacent base station, and performing subsequent cooperation between the cell base station and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
The computer program, when executed by the processor, further performs:
and before the configuration information of the measurement reference signal is sent to the adjacent base station, interacting respective subframe direction to be configured with the adjacent base station.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program performs:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is downlink;
measuring a measurement reference signal sent by a terminal at the side of an adjacent base station, and acquiring interference measurement information between the terminal and the terminal at the side of the adjacent base station based on a measurement result; the subframe configuration direction of the adjacent base station is uplink;
and uploading the interference measurement information to the serving base station.
The computer program, when executed by the processor, further performs:
and when or after the interference measurement information between the terminal and the adjacent base station side terminal is acquired, establishing a corresponding interference list based on the acquired interference measurement information between the terminal and the adjacent base station side terminal.
An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, performs:
receiving measurement reference signal configuration information sent by a serving base station of a cell; the subframe configuration direction of the service base station is uplink;
sending a measurement reference signal to an adjacent base station side terminal, wherein the measurement reference signal is used for the adjacent base station side terminal to acquire interference information between the adjacent base station side terminal and a cell terminal through the measurement reference signal; and the subframe configuration direction of the adjacent base station is downlink.
The invention is described below in conjunction with the scenario embodiments.
Example one
In this embodiment, cross link interference measurement between users is performed based on Sounding Reference Signal (SRS), and a specific flow is shown in fig. 9, specifically:
step 901: the direction to be configured of the subframes is interacted between the base station 1 and the base station 2 through a backhaul link (an X2 interface);
here, the subframe of base station 1 will be configured as downlink and the subframe of base station 2 will be configured as uplink, and in this case, the UE2 served by base station 2 will generate UE-UE cross-link interference to the cell UE1 served by base station 1.
Step 902: the base station 2 interacts the SRS configuration information to the adjacent base station 1 through a backhaul link (X2 interface), and the base station 2 indicates the SRS configuration information to the UE2 of the cell;
here, the SRS configuration information specifically includes: time frequency resource configuration information, a sending period and the like.
Step 903: the base station 1 indicates the received SRS configuration information to the local cell UE 1;
step 904: the UE2 transmits SRS to the UE 1;
step 905: the UE1 measures the SRS transmitted by the UE2 of the neighboring cell, and obtains interference measurement information, such as Reference Signal Received Power (RSRP), between the UE1 of the cell (base station) 1 and the UE2 of the cell (base station) 2;
here, if there are multiple UEs in cell 2, UE1 in cell 1 will measure the interference information with multiple UEs in cell 2 and establish an interference list;
step 906: the UE1 feeds back the obtained interference measurement information to the base station 1;
step 907: the base station 1 interacts the received cross link interference measurement information of multiple UEs to the base station 2 through a backhaul link (X2 interface), so that all the base stations obtain cross link interference information between UEs, and thereafter the base stations may perform cooperation, such as interference cancellation, power control, or cooperative scheduling, according to the interference information.
Example two
As shown in fig. 10, when an intermediate base station (serving j UEs) is configured as an uplink subframe and other surrounding base stations are configured as downlink subframes (the surrounding base stations may not be configured as downlink subframes), the base station will cause inter-UE cross-link interference to users in surrounding base stations 1 (serving m UEs), 2 (serving n UEs) and 3 (serving k UEs), that is, the intermediate uplink base station transmits SRS, and the surrounding downlink base stations serve UEs to perform interference measurement.
In the scenario shown in fig. 10, the uplink base station and the surrounding base stations first exchange subframes to configure direction information through backhaul/X2, and the uplink base station exchanges SRS configuration information configured for each UE in the cell to the surrounding base stations. The peripheral base stations 1, 2 and 3 judge the subframe configuration direction of the peripheral base stations, if the subframe transmission directions of the peripheral base stations are inconsistent with the subframe transmission direction of the uplink base station, the received SRS configuration information interacted with the base stations of the adjacent cells needs to be indicated to the UE of the cell, corresponding symbols are reserved for UE-UE interference measurement, an interference list is established, and the base stations 1[ UE11UE1/RSRP1 and … … UE11UEj/RSRPj are subjected to interference measurement; UE1mUEj/RSRP1, … … UE1mUEj/RSRPj ]; for base station 2[ UE21UE1/RSRP1, … … UE21 UEj/RSRPj; UE2nUEj/R SRP1, … … UE2nUEj/RSRPj ]; for base station 3[ UE31UE1/RSRP1, … … UE31 UEj/RSRPj; UE3KUEj/RSRP1, … … UE3KUEj/RSRPj ]. After obtaining the corresponding interference list, the UE of the downlink base station service cell reports the interference list to the respective service base station respectively; the downlink base station 1, the base station 2, and the base station 3 interact the interference lists obtained by each base station to the uplink base station, so that all the base stations obtain cross link interference information between UEs, and thereafter the base stations may perform cooperation, such as interference deletion, power control, or cooperative scheduling, according to the interference information.
The embodiment can also be extended to understand the situation that a plurality of base stations alternately transmit interference measurement RS and other base stations perform interference measurement.
EXAMPLE III
As shown in fig. 11, when the middle base station (serving j UEs) is configured as a downlink subframe and other surrounding base stations are configured as uplink subframes (the surrounding base stations may not be configured as uplink subframes), the surrounding base stations 1 (serving m UEs), 2 (serving n UEs) and 3 (serving k UEs) will cause inter-UE cross-link interference to the users served by the middle base station. Namely, the surrounding uplink base stations transmit SRS, and the UE served by the middle downlink base station performs interference measurement.
Different from the second embodiment, the intermediate downlink base station measures the SRS transmitted by the serving users of the surrounding base stations 1, 2, and 3. The middle base station and the surrounding base stations firstly exchange subframe configuration direction information through backhaul/X2, and meanwhile, the surrounding base stations exchange SRS configuration information configured for each UE in the cell to the middle base station. The middle downlink base station judges that the subframe configuration direction of the middle downlink base station is inconsistent with the subframe transmission direction of the surrounding uplink base stations, the received SRS configuration information interacted with the surrounding uplink cell base stations needs to be indicated to the cell UE, corresponding symbols are reserved for UE-UE interference measurement, an interference list is established, and base stations 1[ U E1UE11/RSRP11, … … UE1UE1m/RSRP1m are subjected to interference measurement; UEJUE11/RSRP11, … … UEJUE1m/R SRP1m ]; for base station 2[ UE1UE21/RSRP21, … … UE1UE2n/RSRP2 n; uejeue 21/RSRP21, … … uejeue 2n/RSRP2n ]; for base station 3[ UE1UE31/RSRP31, … … UE1UE3k/RSRP3 k; UEjUE31/RSRP31, … … UEjUE3k/RSRP3k ]. After obtaining the corresponding interference list, the UE served by the intermediate downlink base station reports the different interference lists established for each uplink base station to the serving base station respectively; the base station respectively interacts the acquired interference lists with the base station 1, the base station 2 and the base station 3, so that all the base stations acquire cross link interference information among the UEs, and thereafter, the base stations may perform cooperation, such as interference deletion, power control or cooperative scheduling, according to the interference information.
Example four
The present embodiment is a combination of the above second and third embodiments, that is, the subframe configuration in the cell may be considered in stages, and the scenario configuration may be the case of the second embodiment at a certain time, and the scenario configuration may be the case of the third embodiment at the next time. And sending the SRS by the UE in one base station at different stages, and performing interference measurement by the UE served by a plurality of base stations through the SRS, or sending the SRS by the UE in a plurality of base stations and performing interference measurement by the UE served by one base station through the SRS.
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. A cross link interference measurement method is applied to a base station with a downlink subframe configuration direction, and comprises the following steps:
interacting respective subframe direction to be configured with adjacent base stations; determining that the subframe configuration directions of the base station and the adjacent base station are different based on the subframe to-be-configured direction;
receiving the configuration information of the measurement reference signal sent by the adjacent base station, and sending the configuration information of the measurement reference signal to the terminal of the cell; the subframe configuration direction of the adjacent base station is uplink; the base station with the subframe configuration direction being downlink and the adjacent base station transmit information on the same time frequency resource;
receiving interference measurement information uploaded by a terminal of the cell, and sending the interference measurement information to the adjacent base station for subsequent cooperation between the base station of the cell and the adjacent base station according to the interference measurement information; the interference measurement information is: and interference information between the terminal of the cell and the terminal of the adjacent base station side is acquired by the terminal of the cell.
2. The method of claim 1, wherein the Measure reference Signal configuration information comprises: and sending time frequency resource configuration information and/or a reference signal sending period.
3. A cross link interference measurement method is applied to a base station with an uplink subframe configuration direction, and comprises the following steps:
interacting respective subframe direction to be configured with adjacent base stations; determining that the subframe configuration directions of the base station and the adjacent base station are different based on the subframe to-be-configured direction;
sending the configuration information of the measurement reference signal to the adjacent base station and sending the configuration information of the measurement reference signal to the terminal of the cell; the subframe configuration direction of the adjacent base station is downlink; the base station with the subframe configuration direction of ascending and the adjacent base station transmit information on the same time frequency resource;
receiving interference measurement information sent by the adjacent base station, and performing subsequent cooperation between the cell base station and the adjacent base station according to the interference measurement information; the interference measurement information is: and the interference information between the adjacent base station side terminal and the cell terminal is acquired by the adjacent base station side terminal.
4. The method of claim 3, wherein the Measure reference Signal configuration information comprises: and sending the time frequency resource configuration information and/or the reference signal sending period.
5. A cross link interference measurement method is applied to a terminal, and comprises the following steps:
the serving base station of the cell interacts respective sub-frame direction to be configured with the adjacent base station; determining that the subframe configuration directions of the serving base station and the adjacent base station are different based on the subframe configuration direction;
receiving the configuration information of the measurement reference signal sent by the serving base station of the cell; the subframe configuration direction of the service base station is downlink;
measuring a measurement reference signal sent by a terminal at the side of an adjacent base station, and acquiring interference measurement information between the terminal and the terminal at the side of the adjacent base station based on a measurement result; the subframe configuration direction of the adjacent base station is uplink; the service base station and the adjacent base station transmit information on the same time-frequency resource;
and uploading the interference measurement information to the serving base station.
6. The method of claim 5, wherein, during or after the obtaining of the interference measurement information between the terminal and the adjacent base station side terminal, the method further comprises:
and establishing a corresponding interference list based on the acquired interference measurement information between the terminal and the adjacent base station side terminal.
7. The method of claim 5, wherein the Measure reference Signal configuration information comprises: and sending time frequency resource configuration information and/or a reference signal sending period.
8. A cross link interference measurement method is applied to a terminal and comprises the following steps:
the serving base station of the cell interacts respective sub-frame direction to be configured with the adjacent base station; determining that the subframe configuration directions of the serving base station and the adjacent base station are different based on the subframe configuration direction;
receiving the configuration information of the measurement reference signal sent by the serving base station of the cell; the subframe configuration direction of the service base station is uplink;
sending a measurement reference signal to an adjacent base station side terminal, wherein the measurement reference signal is used for the adjacent base station side terminal to acquire interference information between the adjacent base station side terminal and a cell terminal through the measurement reference signal; the subframe configuration direction of the adjacent base station is downlink; and the service base station and the adjacent base station transmit information on the same time-frequency resource.
9. The method of claim 8, wherein the Measure reference Signal configuration information comprises: and sending time frequency resource configuration information and/or a reference signal sending period.
10. A base station, comprising: 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 method of any one of claims 1 to 2, or to perform the steps of the method of any one of claims 3 to 4, when the computer program is run.
11. A terminal, 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 5 to 7 or to perform the steps of the method of claim 8 or 9 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 2, or carries out the steps of the method of any one of claims 3 to 4, or carries out the steps of the method of any one of claims 5 to 7, or carries out the steps of the method of claim 8 or 9.
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