CN111988099A

CN111988099A - Method, network side equipment, terminal and system for measuring cross link interference

Info

Publication number: CN111988099A
Application number: CN201910433905.0A
Authority: CN
Inventors: 谭元德; 王真真; 信金灿; 高晖
Original assignee: Hisense Co Ltd
Current assignee: Hisense Group Co Ltd; Hisense Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-11-24

Abstract

The invention discloses a method, network side equipment, a terminal and a system for measuring cross link interference, which relate to the technical field of wireless communication and are used for solving the problems that how to trigger CLI measurement is not specified and the signaling overhead is large, wherein the method comprises the following steps: the first network side equipment is used for determining an interference terminal which is positioned in the cell and can generate interference to terminals of other cells, and sending first configuration information to the interference terminal; the second network side device is used for determining a disturbed terminal which is positioned at the edge of the cell and can be interfered by terminals of other cells, and sending second configuration information to the disturbed terminal; the interference terminal is used for receiving the first configuration information and sending a CLI measurement reference signal according to the first configuration information; the interfered terminal is used for receiving the second configuration information, receiving the CLI measurement reference signal according to the second configuration information and measuring.

Description

Method, network side equipment, terminal and system for measuring cross link interference

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, a network side device, a terminal, and a system for measuring cross link interference.

Background

In NR (New Radio, New air interface), for a cell configured with a TDD (Time Division duplex) mode, transmission directions between users served by adjacent cells may be different, thereby causing CLI (Cross Link Interference). The cross link interference can be divided into two types, the first type is interference between base stations, and can also be referred to as interference of downlink transmission to uplink transmission. The second is user-to-user interference, which may also be referred to as interference of uplink transmission to downlink transmission.

When a cell adopts D-TDD (Dynamic Time Division duplex) configuration, users in two adjacent cells have different transmission directions, and a cell edge user is likely to suffer from more severe cross link interference. However, for cross link interference between users, how to trigger an interference measurement procedure is not explicitly specified in the existing cross link interference measurement method, and a User Equipment (UE) occupies many time-frequency resources, resulting in a large signaling overhead.

In summary, at present, how to trigger the CLI measurement procedure is not explicitly specified, and the UE occupies many time-frequency resources, resulting in a large signaling overhead.

Disclosure of Invention

The invention provides a method and equipment for measuring cross link interference, which are used for solving the problems that how to trigger a CLI measuring process is not specified clearly at present, and UE occupies a plurality of time-frequency resources, so that larger signaling overhead is caused.

In a first aspect, a system for measuring cross-link interference provided in an embodiment of the present invention includes:

the first network side equipment is used for determining an interference terminal which is positioned in the cell and can generate interference to terminals of other cells, and sending first configuration information to the interference terminal;

the second network side device is used for determining a disturbed terminal which is located at the edge of the cell and can be interfered by terminals of other cells, and sending second configuration information to the disturbed terminal;

the interference terminal is used for receiving the first configuration information and sending a CLI measurement reference signal according to the first configuration information;

and the interfered terminal is used for receiving the second configuration information, receiving the CLI measurement reference signal according to the second configuration information, and measuring the received CLI measurement reference signal.

In the embodiment of the invention, the measurement starting is triggered by sending the configuration information to the terminal by the first network side device or the second network side device, so that a way of triggering the CLI measurement is provided, in addition, the interfered terminal is a terminal which is positioned at the edge of the cell and can be interfered by terminals of other cells, and the interfering terminal is a terminal which is positioned in the cell and can generate interference to the terminals of other cells, therefore, when the CLI measurement is carried out, the CLI measurement is only required to be started for the interfering terminal determined by the first network side device and the interfered terminal determined by the second network side device, and the CLI measurement is not required to be started for other terminals in the cell, thereby reducing the consumption of signaling.

In a second aspect, a method for measuring cross link interference provided in an embodiment of the present invention is applied to a network side device adopting dynamic time division duplex configuration, and the method includes:

a first network side device determines an interference terminal which is located in a local cell and can generate interference to terminals of other cells;

and the first network side equipment sends first configuration information to the interference terminal so that the interference terminal sends a CLI measurement reference signal according to the first configuration information.

In the method, the first network side device takes the terminal which is located in the cell and can generate interference to the terminals of other cells as an interference terminal, the interference terminal starts a CLI measurement process and sends a measurement reference signal by sending the first configuration information to the interference terminal, how to trigger the measurement process is disclosed, and the configuration information is only sent to the interference terminal for measurement, so that only one part of the terminals in the cell start the measurement function, and the other part of the terminals do not start the measurement function.

In a possible implementation manner, the first network side device determines a terminal that may generate interference to terminals of other cells by:

and the first network side equipment determines the terminal needing uplink transmission in the cell as the terminal which can generate interference to the terminals of other cells.

According to the method, the terminal which can generate interference to the terminals of other cells is determined according to the transmission direction when the terminal prepares to perform data transmission, and the terminal which needs to perform uplink transmission is a potential interferer generally (namely, the terminal which can generate interference to the terminals of other cells), so that the terminal which can generate interference to the terminals of other cells is determined according to the transmission direction, and the terminal which is interfered is further convenient to determine.

In a possible implementation manner, the first network side device determines the first configuration information by:

the first network side equipment determines the first configuration information according to measurement information interacted with second network side equipment through a backhaul network;

wherein the measurement information includes part or all of:

the method comprises the steps of serving cell ID, reference signal generation sequence, the initial position of a measurement time slot, the configuration period of the measurement time slot, the measurement frequency point of an edge user and the user ID in the serving cell.

According to the method, the first network side equipment interacts the measurement information with the second network side equipment through the backhaul network so as to determine first configuration information which enables the interference applying terminal determined by the first network side equipment and the interference receiving terminal determined by the second network side equipment to perform CLI measurement on the same time-frequency resource block, and the terminals with cross link interference can be ensured to perform CLI measurement on the same time-frequency resource block, wherein the service cell ID is used for determining an interference source, so that the interference receiving source can measure the experienced cross link interference and confirm information such as the interference source ID.

In a possible implementation manner, the sending, by the first network-side device, the first configuration information to the disturbing terminal includes:

the first network side device sends first configuration Information to the interference terminal through RRCReconfig (Radio Resource Control connection reconfiguration) signaling or DCI (Downlink Control Information) signaling.

In the method, the first network side device indicates the interference terminal to start the CLI measurement through the RRCReconfig signaling or the DCI signaling, and sends the configuration information of the reference signal to the interference terminal, wherein the RRCReconfig signaling is usually attached to a PDSCH (Physical Downlink Shared Channel) for transmission, the configuration is more flexible, and bits can be flexibly increased according to the configuration requirement; the DCI is transmitted in a physical downlink control channel, and modulated by QPSK (Quadrature Phase Shift keying), so that the demodulation success is higher.

In a third aspect, a method for measuring cross link interference provided in an embodiment of the present invention is applied to a network side device adopting dynamic time division duplex configuration, and the method includes:

the second network side equipment determines a disturbed terminal which is located at the edge of the cell and can be interfered by terminals of other cells;

and the second network side equipment sends second configuration information to the interfered terminal so that the interfered terminal measures the received CLI measurement reference signal according to the second configuration information.

In the method, because the terminal located at the edge of the cell is easily interfered by the cross link, the second network side device takes the terminal located at the edge of the cell and interfered by the terminals of other cells as an interfered terminal, and sends the second configuration information to the interfered terminal, so that the interfered terminal starts the CLI measurement process, receives the measurement reference signal sent by the interfered terminal, and discloses how to trigger the measurement process, and only sends the configuration information to the interfered terminal and performs measurement.

In a possible implementation manner, the second network side device determines a terminal that needs to perform downlink transmission in the cell as the terminal that may be interfered by terminals of other cells.

According to the method, the terminal which can generate interference to the terminals of other cells is determined according to the transmission direction when the terminal prepares to perform data transmission, and the terminal which needs to perform downlink transmission is a potential victim (namely, the terminal is easily influenced by the interference generated by the terminals of other cells), so that the terminal which is interfered by the terminals of other cells is determined according to the transmission direction, and further the interfered terminal is convenient to determine.

In a possible implementation manner, the second network side device determines the terminal located at the edge of the cell by:

the second network side device takes a terminal configured for the terminal and having a Timing Advance (TA) greater than a TA preset value as the terminal located at the edge of the cell; or

And the second network side equipment takes the terminal with the RSRP (Reference Signal Received Power) value of the public Reference Signal of the downlink cell smaller than the RSRP preset value as the terminal positioned at the edge of the cell.

According to the method, the TA value or the reference signal receiving power value configured for the terminal by the second network side equipment is compared with the preset value to determine whether the terminal is the terminal located at the edge of the cell, so that the TA value or the reference signal receiving power is related to the distance between the terminal and the network side equipment, the TA value can be updated along with the movement of the terminal, and the cell center user and the cell edge user can be more accurately distinguished.

In a possible implementation manner, the second network side device determines the TA preset value by the following means:

the second network side device takes N times of the ratio of the radius of the cell central area to the radius of the cell coverage area as the TA preset value;

the second network side device determines the RSRP preset value in the following manner:

and the second network side equipment takes the average value of the product of the transmitting power of the common reference signal of at least one downlink cell and the channel fading coefficient as the RSRP preset value.

In a possible implementation manner, the sending, by the second network side device, the second configuration information to the victim terminal includes:

and the second network side equipment sends second configuration information to the interfered terminal through RRCReconfig signaling or DCI signaling.

In the method, the second network side device instructs the victim terminal to start CLI measurement through RRCREConfig signaling or DCI signaling, and sends the configuration information of the reference signal to the victim terminal, wherein the RRCREConfig signaling is usually attached to the PDSCH for transmission, the configuration is more flexible, and bits can be flexibly increased according to the configuration requirement; DCI is transmitted in a physical downlink control channel and modulated by QPSK, so that the demodulation success rate is higher.

In a possible implementation manner, the second network side device determines the second configuration information by:

the second network side equipment determines the second configuration information according to the measurement information interacted with the first network side equipment through a backhaul network;

wherein the measurement information includes part or all of:

identification of a serving cell, a reference signal generation sequence, a starting position of a measurement time slot, a configuration period of the measurement time slot, a measurement frequency point of an edge user, and a user ID in the serving cell.

According to the method, the second network side equipment interacts the measurement information with the first network side equipment through a backhaul network so as to determine second configuration information which enables the interference applying terminal determined by the first network side equipment and the interference receiving terminal determined by the second network side equipment to perform CLI measurement on the same time-frequency resource block, and further the terminal with the cross link interference can be ensured to perform CLI measurement on the same time-frequency resource block, wherein the service cell ID is used for determining an interference source, so that the interference receiving source can measure the experienced cross link interference and confirm information such as the interference source ID.

In a fourth aspect, a method for measuring cross link interference provided in an embodiment of the present invention is applied to an interfering terminal that needs to send a CLI measurement reference signal in CLI measurement, and the method includes:

the interference terminal receives first configuration information sent by first network side equipment, wherein the first configuration information is sent by the first network side equipment to a terminal which is located in a local cell and can generate interference to terminals of other cells;

and the interference terminal sends a CLI measurement reference signal according to the first configuration information.

In the method, the interference terminal sends the CLI measurement reference signal according to the received first configuration information, which indicates that the first configuration information sent by the first network side device triggers the measurement process, that is, a CLI measurement triggering mode is provided, and in addition, the interference terminal is a terminal which is determined by the first network side device and is located in the cell and generates interference to terminals of other cells, so that only a part of terminals in the cell start the measurement function, and the other part of terminals do not start the measurement function.

In a possible implementation manner, the receiving, by the interference applying terminal, first configuration information sent by a first network side device includes:

And the interference terminal receives the first configuration information sent by the first network side equipment through RRCReconfig signaling or DCI signaling.

In the method, the interference terminal receives the first configuration information sent by the first network side device through the RRCREConfig signaling or the DCI signaling, wherein the RRCREConfig signaling is usually attached to the PDSCH channel for transmission, the configuration is more flexible, and bits can be flexibly increased according to the configuration requirement; DCI is transmitted in a physical downlink control channel and modulated by QPSK, so that the demodulation success rate is higher.

In a fifth aspect, a method for cross link interference measurement provided in an embodiment of the present invention is applied to a victim terminal that needs to receive a CLI measurement reference signal in CLI measurement, and the method includes:

receiving second configuration information sent by second network side equipment by a disturbed terminal, wherein the second configuration information is of a terminal which is located at the edge of a local cell and can be interfered by terminals of other cells by the second network side equipment;

and the interfered terminal receives the CLI measurement reference signal according to the second configuration information and measures the received CLI measurement reference signal.

In the method, the interfered terminal sends the CLI measurement reference signal according to the received second configuration information, which indicates that the second configuration information sent by the second network side equipment triggers the measurement process, that is, a CLI measurement triggering mode is provided, and in addition, the interfered terminal is a terminal which is determined by the second network side equipment and is located at the edge of the cell and can receive the interference of terminals of other cells, so that only a part of terminals in the cell start the measurement function, and the other part of terminals do not start the measurement function.

In a possible implementation manner, the receiving, by the victim terminal, second configuration information sent by a second network side device includes:

and the interfered terminal receives second configuration information sent by the second network side equipment through RRCReconfig signaling or DCI signaling.

In the method, the victim terminal receives the second configuration information sent by the second network side device through the RRCReconfig signaling or the DCI signaling, wherein the RRCReconfig signaling is usually attached to the PDSCH channel for transmission, the configuration is more flexible, and bits can be flexibly increased according to the configuration requirement; DCI is transmitted in a physical downlink control channel and modulated by QPSK, so that the demodulation success rate is higher.

In a sixth aspect, a first network-side device for measuring cross link interference provided in an embodiment of the present invention is applied to a network-side device adopting dynamic tdd configuration, where the first network-side device includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

determining a disturbing terminal which is positioned in the cell and can generate interference to terminals of other cells;

And sending first configuration information to the interference terminal so that the interference terminal sends a CLI measurement reference signal according to the first configuration information.

In one possible implementation, the processor is further configured to determine a terminal that may interfere with terminals of other cells by:

and determining the terminal which needs to perform uplink transmission in the cell as the terminal which can generate interference to the terminals of other cells.

In one possible implementation, the processor is further configured to determine the first configuration information by:

determining the first configuration information according to measurement information interacted with second network side equipment through a backhaul network;

wherein the measurement information includes part or all of:

In one possible implementation, the processor is specifically configured to:

and sending first configuration information to the interference terminal through RRCREConfig signaling or DCI signaling.

In a seventh aspect, a second network-side device for measuring cross link interference provided in the embodiment of the present invention is applied to a network-side device adopting dynamic tdd configuration, where the second network-side device includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

Determining interfered terminals which are positioned at the edge of the cell and can be interfered by terminals of other cells;

and sending second configuration information to the interfered terminal so that the interfered terminal measures the received CLI measurement reference signal according to the second configuration information.

In one possible implementation, the processor is further configured to determine a terminal that may be interfered with by terminals of other cells by:

and determining the terminal needing downlink transmission in the cell as the terminal which can be interfered by the terminals of other cells.

In a possible implementation manner, the processor is further configured to determine a terminal located at an edge of the cell by:

taking a terminal configured for the terminal and having a Timing Advance (TA) greater than a TA preset value as the terminal located at the edge of the cell; or

And taking a terminal with the RSRP (Reference Signal Received Power) value of the public Reference Signal of the downlink cell smaller than the RSRP preset value as the terminal positioned at the edge of the cell.

In one possible implementation, the processor is further configured to determine the TA preset value by:

Taking N times of the ratio of the radius of the cell central area to the radius of the cell coverage area as the TA preset value;

the processor is further configured to determine the RSRP preset value by:

and taking the average value of the product of the emission power of the common reference signal of at least one downlink cell and the channel fading coefficient as the RSRP preset value.

In a possible implementation manner, the processor is further configured to send second configuration information to the victim terminal, including:

and sending second configuration information to the interfered terminal through RRCREConfig signaling or DCI signaling.

In one possible implementation, the processor is further configured to determine the second configuration information by:

determining the second configuration information according to the measurement information interacted with the first network side equipment through a backhaul network;

wherein the measurement information includes part or all of:

In an eighth aspect, an interfering terminal for cross link interference measurement according to an embodiment of the present invention includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

Receiving first configuration information sent by first network side equipment, wherein the first configuration information is sent by the first network side equipment to a terminal which is located in a local cell and can generate interference to terminals of other cells;

and transmitting a CLI measurement reference signal according to the first configuration information.

In one possible implementation, the processor is specifically configured to:

and receiving the first configuration information sent by the first network side equipment through RRCReconfig signaling or DCI signaling.

In a ninth aspect, an embodiment of the present invention provides a victim terminal for cross-link interference measurement, where the victim terminal includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

receiving second configuration information sent by a second network side device, wherein the second configuration information is of a terminal which is located at the edge of the local cell and can be interfered by terminals of other cells;

In one possible implementation, the processor is specifically configured to:

and receiving second configuration information sent by the second network side equipment through RRCReconfig signaling or DCI signaling.

In a tenth aspect, an embodiment of the present invention further provides a device for measuring cross link interference, which is applied to a network side device adopting dynamic time division duplex configuration, where the device includes a first determining module and a first sending module:

a first determining module, configured to determine an interfering terminal that is located in a local cell and generates interference to terminals of other cells;

the device comprises a first sending module and a second sending module, wherein the first sending module is used for sending first configuration information to an interference terminal so that the interference terminal sends a CLI measurement reference signal according to the first configuration information.

In an eleventh aspect, an embodiment of the present invention further provides a device for measuring cross link interference, where the device is applied to a network side device adopting dynamic time division duplex configuration, and the device includes a second determining module and a second sending module:

a second determining module, configured to determine a disturbed terminal that is located at an edge of the local cell and that may be interfered by terminals of other cells;

and the second sending module is used for sending second configuration information to the interfered terminal so that the interfered terminal measures the received CLI measurement reference signal according to the second configuration information.

In a twelfth aspect, an embodiment of the present invention further provides a device for measuring cross link interference, which is applied to an interfering terminal that needs to send a CLI measurement reference signal in CLI measurement, and the device includes a first receiving module and a third sending module:

a first receiving module, configured to receive first configuration information sent by a first network-side device, where the first configuration information is sent by the first network-side device to a terminal that is located in a local cell and may interfere with terminals of other cells;

and a third sending module, configured to send a CLI measurement reference signal according to the first configuration information.

In a thirteenth aspect, an embodiment of the present invention further provides a device for cross link interference measurement, which is applied to a victim terminal that needs to receive a CLI measurement reference signal in CLI measurement, and the device includes a second receiving module and a measuring module:

a second receiving module, configured to receive second configuration information sent by a second network-side device, where the second configuration information is of a terminal that is located at an edge of a local cell and is interfered by terminals of other cells;

and the measurement module is used for receiving the CLI measurement reference signal according to the second configuration information and measuring the received CLI measurement reference signal.

In a fourteenth aspect, the present application further provides a computer storage medium having a computer program stored thereon, which when executed by a processing unit, performs the steps of the method of the first aspect.

In addition, for technical effects brought by any one implementation manner of the sixth aspect to the thirteenth aspect, reference may be made to technical effects brought by different implementation manners of the second aspect to the fifth aspect, and details are not repeated here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of cross-link interference according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a slot configuration of an edge UE1 and an edge UE2 according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a cross-link interference measurement method according to an embodiment of the present invention;

fig. 4A is a schematic diagram of a cell center user and a cell edge user according to an embodiment of the present invention;

Fig. 4B is a schematic diagram of a cell service radius according to an embodiment of the present invention;

fig. 5A is a schematic diagram of uplink and downlink transmission without a TA value according to an embodiment of the present invention;

fig. 5B is a schematic diagram of uplink and downlink transmission with a TA value according to an embodiment of the present invention;

fig. 6 is a schematic diagram of RAR carrying information according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a process of acquiring a TA value in uplink synchronization according to an embodiment of the present invention;

fig. 8 is a schematic diagram of three cells adjacent to each other according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a measurement frame structure according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a first method for cross link interference measurement according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a second method for cross link interference measurement according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a third method for cross link interference measurement according to an embodiment of the present invention;

fig. 13 is a diagram illustrating a fourth method for cross link interference measurement according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a complete method for cross link interference measurement according to an embodiment of the present invention;

fig. 15 is a schematic diagram of a first network-side device for cross-link interference measurement according to an embodiment of the present invention;

Fig. 16 is a schematic diagram of a second network-side device for cross-link interference measurement according to an embodiment of the present invention;

fig. 17 is a schematic diagram of an interfering terminal for measuring cross link interference according to a first embodiment of the present invention;

fig. 18 is a schematic diagram of a disturbed terminal for a first cross-link interference measurement according to an embodiment of the present invention;

fig. 19 is a schematic diagram of an interfering terminal for a second cross-link interference measurement according to an embodiment of the present invention;

fig. 20 is a schematic diagram of a disturbed terminal for a second cross-link interference measurement according to an embodiment of the present invention;

fig. 21 is a schematic diagram of a first network-side device for measuring cross-link interference according to another embodiment of the present invention;

fig. 22 is a schematic diagram of a second network-side device for measuring cross-link interference according to another embodiment of the present invention;

fig. 23 is a schematic diagram of an interfering terminal for measuring interference of a third cross link according to an embodiment of the present invention;

fig. 24 is a schematic diagram of a disturbed terminal for third cross-link interference measurement according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Some of the words that appear in the text are explained below:

1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

2. In the embodiment of the present invention, the term "network side device" refers to a device capable of indicating cross link interference measurement, and includes a macro base station, a micro base station, a pico base station, and the like.

3. The term "terminal" in the embodiments of the present invention refers to a mobile communication device capable of performing cross-link interference measurement, and includes a mobile phone, a computer, a tablet, an intelligent terminal, a multimedia device, a streaming media device, and the like.

The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.

As shown in fig. 1, two adjacent cells in the figure are: cell 1, cell 2, cell 1 is a cell to which network side device TRP1(TRP, Transmission Reference Point) belongs, and cell 2 is a cell to which network side device TRP2 belongs, where edge UE1 is located at a boundary of the cell 1, and edge UE2 is located at a boundary of the cell 2, and the two are close to each other. The configuration of the time slots of the edge cell 1 and the edge cell 2 is shown in fig. 2, where D is a downlink symbol, F is a flexible configuration symbol, and U is a downlink symbol. When the edge UE2 is transmitting uplink traffic at the F symbol, the edge UE1 is receiving downlink information sent by the base station. At this time, since the edge UE1 is at the cell edge, the received power is small; the edge UE2 requires a larger transmit power and is located closer to the edge UE1, and thus causes severe interference to the edge UE1, where the interference between uplink and downlink is user-to-user interference. When the number of adjacent cells is increased, a plurality of cells for uplink transmission may exist at the same time, so that the cross link interference suffered by the interfered side is superposition caused by a plurality of interfering sides, and the interference situation becomes more serious.

The 3gpp conference decides to perform user-user interference measurement by using SRS (Sounding Reference Signal), and the network side should have a mechanism to allocate SRS sequences to one or more users to support CLI measurement of different levels, and should pay attention to overhead caused by measurement to avoid occupying too much system resources. Thus, conferences have decided to assess the extent of CLI by long-term measurements, such as: RSSI (Received Signal Strength Indication) measurement or RSRP measurement. However, the conference does not specify how to trigger the interference measurement procedure and what type of reference signal is transmitted by the interfering side and the interfered side.

Therefore, the embodiment of the invention provides a cross Link interference measurement method based on user position and transmission direction in a communication network with D-TDD, aiming at cross Link interference caused by asymmetric UL (Up Link ) and DL (Down Link) transmission in a D-TDD mode.

With respect to the above scenario, the following describes an embodiment of the present invention in further detail with reference to the drawings of the specification.

As shown in fig. 3, a method for measuring cross-link interference according to an embodiment of the present invention includes: the device comprises a first network side device 10, a second network side device 20, an interference applying terminal 30 and a disturbed terminal 40.

A first network side device 10, configured to determine an interfering terminal that is located in a local cell and may generate interference to terminals of other cells, and send first configuration information to the interfering terminal;

The second network side device 20 is configured to determine a victim terminal that is located at an edge of the local cell and that may be interfered by terminals of other cells, and send second configuration information to the victim terminal;

the interference terminal 30 is configured to receive first configuration information sent by a first network side device, and send a CLI measurement reference signal according to the first configuration information;

and the victim terminal 40 is configured to receive second configuration information sent by a second network-side device, receive a CLI measurement reference signal according to the second configuration information, and measure the received CLI measurement reference signal.

Through the scheme, because the interfered terminal in the embodiment of the invention is a terminal which is positioned at the edge of the cell and can be interfered by terminals of other cells, and the interfering terminal is a terminal which is positioned in the cell and can generate interference to the terminals of other cells, when CLI measurement is carried out, the CLI measurement is started only for the interfering terminal determined by the first network side equipment and the interfered terminal determined by the second network side equipment, but the CLI measurement is not started for other terminals in the cell, so that the consumption of signaling is reduced, and in addition, the measurement starting is triggered by sending configuration information to the terminal by the first network side equipment or the second network side equipment, so that a way for triggering the CLI measurement is provided.

Optionally, the first network side device may also determine a terminal that is located at an edge of the local cell and may generate interference to terminals of other cells.

The cross link interference scheme in the embodiment of the invention mainly comprises two parts, wherein the first part is to judge whether a user in a cell is an edge user so as to determine whether to start a CLI measurement function, and the second part is to determine the reference signal type of the user according to the transmission direction of the user.

For the first part of the scheme, the network side device determines the terminal located at the edge of the cell according to the location information of the terminal, and further determines the interfering terminal or the interfered terminal from the terminal located at the edge of the cell, specifically, the first network side device determines the interfering terminal in the corresponding cell (for example, the corresponding cell is cell 1), and the second network side device determines the interfered terminal in the corresponding cell (for example, the corresponding cell is cell 2).

The network side equipment only starts the measurement function for the interfered terminal or the interfered terminal in the cell. Therefore, only a part of users in the cell start the measurement function, and the other part of users do not start the measurement function, thereby reducing the measurement overhead of the CLI.

In the embodiment of the present invention, a schematic diagram of a cell edge user and a cell center user is shown in fig. 4A, where a circular shaded portion in a cell is a cell center area (the cell center of cell 1 in the figure), and a user located in the cell center area is a cell center user; in a cell, the white area except the shaded portion is a cell edge area (cell edge of cell 1 in the figure), and a user located in the cell edge area is a cell edge user.

Optionally, there are many methods for distinguishing the cell edge users from the cell center users, and the following methods are listed as follows:

and in the first distinguishing mode, selecting a terminal with TA greater than a TA preset value as a terminal at the edge of the cell.

The TA preset value is N times of the ratio of the radius of the cell center area to the radius of the cell coverage area.

In the embodiment of the present invention, considering that the TA value is twice of the transmission delay of the base station and the user, N is 2.

As shown in fig. 4B, if the radius of the cell center area is R Km and the radius of the cell coverage area is c (i.e. R shown in the figure) Km, the TA is preset to a value TA_thresholdComprises the following steps:

wherein, the value range of R is 0-R, which can be set according to the condition of the cell. For the setting of r, if more resources in the cell are occupied, the value of r can be adjusted to be small appropriately; if the intra-cell traffic is not heavy and some users have poor communication link conditions (assuming severe cross-link interference is experienced), the value of r may be scaled up appropriately.

Selecting a terminal with reference signal received power of a common reference signal of a downlink cell being less than a RSRP preset value as a terminal positioned at the edge of the cell;

and taking the ratio of the sum of the products of the emission power of the at least one downlink cell common reference signal and the channel fading coefficient to the number of the at least one downlink cell common reference signal as the RSRP preset value.

Assuming that reference signals (i.e. T downlink cell common reference signals) are configured on T resources in total, the transmission power of each reference signalIs P_tThen RSRP preset value RSRP_thresholdComprises the following steps:

where g is the channel fading coefficient, a function of the radius of the cell center. When a plurality of resource allocation reference signals exist, averaging can be carried out on the plurality of reference signals to obtain a final RSRP preset value. When only one resource configuration reference signal exists, taking the product of the transmission power of the resource configuration reference signal and the channel fading coefficient as an RSRP preset value, and when the RSRP of the user is greater than the RSRP preset value, considering the user as a cell center user; otherwise, the user is considered to be a cell edge user.

Optionally, the network side device may also directly measure the primary synchronization signal strengths of all UEs in the corresponding cell range, determine the position of the corresponding UE in the cell managed by the network side device based on the measured primary synchronization signal strengths of the UEs, determine whether the UE is a cell edge UE based on a preset threshold, and then identify the cell edge UE as a user needing CLI measurement.

The UE is determined to be edge UE of the network side device to which the UE belongs when the primary synchronization signal strength of the UE is smaller than a set primary synchronization signal strength threshold.

In the embodiment of the invention, compared with the first distinguishing mode, the second distinguishing mode is a sub-optimal method, because the RSRP updating period is slow, when the user moves, the position of the user cannot be accurately positioned, and the TA value can be updated along with the movement of the user, so that the center of a cell and the edge user can be more accurately distinguished.

The first part is described in detail below by taking a distinguishing manner one as an example, namely, the user type is judged according to the TA value, and the first part mainly relates to the measurement and reporting process of the TA value of the user.

An important indicator of uplink transmission in the existing system is that different UEs implement orthogonal multiple access in time and frequency, i.e. different UEs in the same cell do not interfere with each other in uplink transmission. In order to ensure the orthogonality of uplink transmissions, the base station requires that the arrival times of signals of different UEs in the same subframe but different frequency domain resources at the base station are substantially aligned. In the UE side, the essence of TA is that there is a negative offset between the received downlink subframe start time and the uplink subframe transmission time. The base station can appropriately control the offset of each UE, so as to control the time of arrival of uplink signals of different UEs at the base station. For the users at the edge of the cell, because of the larger transmission delay, the users need to send uplink data ahead of the users at the center of the cell, and it is ensured that the timing of uplink or downlink subframes reaching different UEs at the base station side is the same. The TA value is a UE-level configuration, and as shown in fig. 5A and 5B, the TA value indicates uplink transmission or downlink transmission performed between the base station and the terminal when there is no TA or TA, respectively.

Generally, the base station needs to measure uplink information of the UE, so as to obtain delay information of the uplink signal of the user through measurement. Then, the base station may send a Time Advance Command to the UE through an initial uplink synchronization process or an uplink synchronization update process to inform the UE of the TA value of the UE, thereby completing an interaction process of the TA value.

The uplink synchronization process is divided into the following steps. After the user completes the cell search process, the UE and the cell acquire downlink synchronization, so that the UE can receive downlink data. The UE needs to establish a connection with the cell and acquire uplink synchronization through a random access procedure. The first step of the Random Access process is that the UE sends a Random Access Preamble, where the Preamble is used to notify the base station that the UE initiates a Random Access request, and enable the base station to estimate a transmission delay with the UE, so as to calibrate uplink Time and notify the UE of a Time Advance Command. Before the UE needs to send the Preamble, the following information is needed:

preamble Index, time-frequency resource for transmitting PRACH (Physical Random Access Channel), corresponding scrambling information RA-RNTI (Random Access Radio Network Temporary Identifier), and target receiving power.

The Preamble signaling is transmitted on the PRACH, and the base station notifies all UEs through the PRACH-ConfigIndex and the PRACH-frequency offset fields in the broadcast system information SIB 2, and allows the Preamble to be transmitted on which time/frequency resources. Each preamble Resource occupies 6 consecutive RBs (Resource Block ) in the frequency domain, and just supports the minimum system bandwidth.

Optionally, the selection of the Preamble Index may be determined by the UE or the base station, and then PRACH resources usable in the time domain are determined according to the PRACH-configIndex (physical random access channel configuration Index), and which PRACH in the system frame can send the Preamble and the frequency domain position are specified by the PRACH Mask Index (physical random access channel Mask Index). After the corresponding time-frequency information is determined, the value of the RA-RNTI is also determined, the item is used for scrambling, and the UE monitors a corresponding PDCCH (Physical Downlink Control Channel) according to the RA-RNTI in a time window after the preamble is sent. And finally, determining the power of the UE for sending the preamble, wherein the power value is determined by the downlink path loss obtained by the UE through measuring the cell reference signal.

In implementation, since the base station does not know which time-frequency resource the UE will transmit the preamble on, the preamble is detected and received on all time-frequency resources indicated by the system. The base station side determines a TA value through a preamble (that is, the base station configures a TA for the terminal), and sends the TA value to the UE through a Time Advance Command field of an RAR (Random Access Response). The information carried by the RAR is shown in fig. 6, and includes an RTime Advance Command, an UL grant, and a temporal C-RNTI (Cell Radio Network temporal Identifier), where the Time Advance Command occupies 11 bits, and the corresponding index range is 0-1282.

In an implementation, after the UE transmits the preamble, the UE may monitor the PDCCH in the RAR time window, that is, monitor the PDCCH in the time window shown in fig. 7, so as to receive the RAR message corresponding to the RA-RNTI, where the time window starts from "subframe +3 subframes where the preamble is transmitted", and has a duration of RA-ResponseWindowSize (random access response window size) subframes. And if the UE does not monitor the RAR returned by the base station in the period of time, the UE considers that the random access fails. And when the UE successfully receives an RAR and successfully decodes through the RNTI, the UE acquires the TA value of the UE, and the TA value interaction between the base station and the UE is completed. The whole flow is shown in fig. 7.

In practice, there is a transmission delay of about 6.7us per 1Km, since the uncertainty of the uplink timing is proportional to the cell radius. The granularity of uplink synchronization is 16Ts (0.52us), so the actual uplink adjustment value is NTA × 16 Ts.

Optionally, considering that the location of the user may change when the user moves over time, the base station may further obtain the TA value of the user through an uplink synchronization update process. When the UE and the base station have already acquired uplink synchronization, but the original TA value may no longer be applicable with the change of factors such as high-speed movement of the UE or transmission path, and the UE needs to continuously update its time advance to ensure uplink synchronization. When a base station finds that UE loses uplink synchronization, a Timing Advance Command is sent to the UE to request the UE to adjust uplink transmission Timing, the Command is sent to the UE through a Timing Advance Command MAC Control Element (Media Access Control Element, Media Access Control layer Control unit), 6 bits are occupied, the corresponding index range is 0-63, the UE calculates according to a TA value stored for the last time, and after the base station receives the Timing Advance Command MAC Control Element Command, the TA adjustment value is recalculated through the following formula.

N_TA,new＝N_TA,old+(TA-31)*16

Wherein N is_TA,newFor recalculating the resulting uplink adjustment value, N_TA,oldThe value is adjusted for the last uplink.

In summary, in the embodiment of the present invention, the base station measures the TA value through the uplink information sent by the UE, and notifies the UE through the Timing Advance Command, at this time, the process of interaction between the two is completed. In the initial uplink synchronization process, UE sends a preamble sequence, a base station determines a TA value and sends the TA value configured for a terminal to the UE through a Timing Advance Command field; when the user is in the uplink synchronization updating process, the base station can also notify the user of new TA value information. Therefore, the base station can acquire the TA value of the user served by the base station.

After the base station acquires the TA values of all users in the cell, comparing the TA values of all users with the threshold value, and when the TA value of the user is greater than the threshold value, considering the user as a cell edge user; otherwise, the user is considered as the cell center user.

Considering that a terminal which does not need to interact with network side equipment is generally in a dormant state, because cross link interference cannot be generated, optionally, an interfering terminal which needs to start CLI measurement is a user in a cell and is a terminal which needs to interact with first network side equipment; the disturbing terminal which needs to start CLI measurement is a cell edge user and is a terminal which needs to interact with a second network side device.

For example, cell 1 is adjacent to cell 2, and users located at the edge of this cell 1 include: user 1, user 2, the users located at the edge of this cell 2 have: user 3, user 4.

Suppose that the user 1 and the user 2 are ready to perform uplink transmission, and the user 3 and the user 4 are ready to perform downlink transmission, so that it can be determined that the interfering terminals in the cell 1 are the user 1 and the user 2, and the interfered terminals in the cell 2 are the user 3 and the user 4, that is, the terminals in the cell 1 that need to start CLI measurement are: the user 1, the user 2, and the terminal in the cell 2 that needs to start CLI measurement are: user 3, user 4.

Assuming that user 1, user 2, and user 3 are ready to perform uplink transmission and user 4 is ready to perform downlink transmission, it can be determined that the interfering terminal in cell 1 is: user 1, user 2, the disturbed terminal in cell 2 is: the user 4.

Optionally, it is considered that the user 3 needs to perform uplink transmission with the network-side device in the cell 2, and the user 1 and the user 2 need to perform uplink transmission with the network-side device in the cell 1, that is, the transmission directions of the

users

1, 2, and 3 in the adjacent cell 1 and the cell 2 are the same, so that cross-link interference does not occur between the

users

1, 2, and 3, and therefore the network-side device corresponding to the cell 2 does not need to configure second configuration information for the user 3, and interaction of signaling can be reduced.

Optionally, when the user 3 in the cell 2 may generate interference to the user 5 in the cell 3, the network side device corresponding to the cell 2 may determine that the interfering terminal in the cell 2 is the user 3, and configure the first configuration information for the user 3.

For the second part of the scheme, the type of the user is mainly determined according to the transmission direction of the user, different reference signals are configured for different types of users, and the network side equipment sends different configuration information to the different types of users.

In the embodiment of the present invention, the first network side device may also use a terminal located in the local cell and interfered by terminals of other cells as an interfered terminal, and configure second configuration information for the interfered terminal; alternatively, the second network side device may use a terminal that is located in the local cell and may generate interference to terminals of other cells as an interfering terminal, and configure the first configuration information for the interfering terminal.

Specifically, the network side device determines the type of the terminal that needs to start CLI measurement in the following manner:

if the direction in which a certain terminal prepares to transmit data is downlink transmission (i.e. a network side device such as a base station needs to send data to the terminal), the terminal is interfered (i.e. a potential interfered person); if the direction in which a terminal is ready to transmit data is uplink (i.e., the terminal needs to send data to the base station), the terminal interferes with the terminal (i.e., a potential interferer).

In implementation, the base station needs to determine the user transmission direction according to SR (Scheduling Request) information sent by the user and data in the buffer at the base station side. When a user has uplink information to send, a terminal needs to send an SR to a base station in advance, namely the terminal prepares to perform uplink transmission, and the direction of data pre-transmission of the terminal is uplink transmission at the moment; when the base station receives the downlink data of the high layer, namely the terminal prepares to perform downlink transmission, the direction of the data pre-transmitted by the terminal is downlink transmission at this time.

Optionally, the potential interferer transmits a non-zero power reference signal, the potential interferer transmits a zero power reference signal, and the potential interferer performs CLI measurements. That is, when the base station considers that a certain user among users interacting with users of other cells is a cell edge user and prepares to perform uplink service transmission, it may be determined that the user is a potential interferer, configure a non-zero power reference signal for the user, and send first configuration information; when the base station considers that one of the users interacting with the users of other cells is a cell edge user and prepares to perform downlink service transmission, it may be determined that the user is a potential interfered user, configure a zero-power reference signal for the user, and send second configuration information.

Optionally, after the serving cell determines the type of the user, to ensure effective implementation of the measurement function, measurement information (i.e., information used for CLI measurement) is exchanged between different cells through a backhaul link, that is, the first network side device determines the first configuration information according to the measurement information exchanged with the second network side device through the backhaul network, and the second network side device determines the second configuration information according to the measurement information exchanged with the first network side device through the backhaul network.

Wherein the measurement information includes, but is not limited to, part or all of the columns:

When there are multiple first network-side devices or multiple second network-side devices, for example, the network-side device 1 corresponding to the cell 1 determines that the interfering terminal in the cell 1 has the user 1 (generates interference to the user 3) and the user 2 (generates interference to the user 4), the network-side device 2 corresponding to the cell 2 determines that the interfered terminal in the cell 2 has the user 3 (is interfered by the user 1), and the network-side device 3 corresponding to the cell 3 determines that the interfered terminal in the cell 3 has the user 4 (is interfered by the user 2), then the network-side device 1 needs to perform interaction of measurement information with both the network-side device 2 and the network-side device 3.

In the embodiment of the invention, after information used for CLI measurement is interacted among a plurality of network side devices, the network side devices send first configuration information to an interfering terminal and/or send second configuration information to an interfered terminal through a radio resource control connection reconfiguration RRCReconfig signaling or a DCI signaling.

Example (b): it is assumed that there are three cells adjacent to each other, where the geographical location of the UE is as shown in fig. 8. And setting the radius of the center of the cell as R ═ R/2, wherein R is the radius of the coverage area of the cell. The base station exchanges the time frequency position of the reference signal, service cell ID information, a signal generation sequence used by the non-zero power reference signal, a system frame number at the beginning of the measurement subframe, a sending period of the measurement subframe, a measurement frequency point and other information through a backhaul network. The UE is started, firstly monitors a cell master/slave synchronous signal, acquires cell broadcast information from the cell master/slave synchronous signal, demodulates a time frequency resource occupied by a base station for allowing uplink transmission of the Preamble from a broadcast channel, selects the Preamble sequence and the transmission power thereof used by the UE, then transmits the Preamble sequence, monitors the signal at the position where the Preamble is continuously located by the base station, receives the signal transmitted by the UE, calculates the delay time of the uplink signal at the moment and the TA value of each user according to the cyclic shift value of the signal, compares the TA value of the user with the TA threshold value, and distinguishes a cell center user and a cell edge user. At this time, the base station packages the TA value of the user into an RAR message and attaches the RAR message to a physical channel PDCCH, the message is sent to the UE, and the UE receives the signal in a corresponding monitoring window to complete the interaction process of the TA value.

Optionally, the network side device sends the first configuration information to the interfering terminal and/or sends the second configuration information to the interfered terminal through the RRCReconfig signaling or the DCI signaling.

For example, the base station initiates a RRCReconfig request for an edge user among users interacting with users of other cells, encapsulates relevant information measured by CLI in RRCReconfig signaling, and specifies a potential interferer to send a non-zero power reference signal and a potential interfered user to send a zero power reference signal. And the potential interfered user monitors the reference signal sent by the potential interferer at the corresponding frequency point, and feeds back the measured value to the base station after measuring the power of the reference signal, thereby completing the CLI measurement process.

Specifically, the RRC protocol includes functions of taking charge of UE mobility management related measurement and providing parameter configuration for the UE, and may trigger the RRCReconfig function when measurement management/parameter configuration needs to be performed on the user. The whole process is divided into two steps, in the first step, the base station sends RRC Reconfiguration information in DL-CCCH (Downlink Common Control Channel), the information can carry configuration information aiming at the UE, the signaling is used for helping a user to complete the cross Link interference measurement function, and the information possibly comprises the reference signal type used by the user, the measurement period, the measurement frequency point, the measurement initial position and the like; and step two, the RRC connection reconfiguration is completed, and the UE does not carry any actual information and only plays a role in confirming the RRC layer configuration.

Optionally, in addition to the RRC signaling, the user interference measurement function may also be started through DCI signaling attached to a PDCCH channel. In the protocol 38.212, several formats of DCI are specified, wherein DCI Format 2_3 can be used to manage SRS for turning on the measurement function. The signaling currently includes: determining a bit by the DCI format, wherein the bit occupies 1 bit; the sequence number of the transmission block occupies flexible change of bit information; an SRS sending request occupies 2 bits; power control command, 2 bits. For example, when the user is a cell edge user and is a potential interferer, a suitable SRS sequence is chosen for the user at this time, and the SRS transmit power is calculated from large-scale fading. When the user is a cell edge user and is a potential interfered person, the SRS sequence value can be defaulted, and then the transmitting power of the user SRS is set to zero, and the configuration of the zero power reference signal can be carried out. For the cell center user, if the DCI _ Format in this Format is not configured, the UE cannot retrieve the Format and does not start the measurement function.

In the embodiment of the invention, the RRCREConfig signaling is usually attached to a PDSCH channel for transmission, the configuration is more flexible, bits can be flexibly increased according to the configuration requirement, but compared with the transmission in a control channel, the demodulation success rate is lower than that of DCI signaling. The DCI is transmitted in a physical downlink control channel, QPSK modulation is adopted, demodulation success is higher, but compared with RRCReconfig signaling, the DCI occupies more system time/frequency resources.

In this embodiment, the first configuration information or the second configuration information includes, but is not limited to, part or all of the following:

reference signal type, measurement period, measurement frequency point and measurement starting position.

Optionally, the measurement period is determined by a higher layer, and when finer CLI information is required, the configured measurement period should be shorter; conversely, the measurement period should be longer. For a non-zero power reference signal, the selected reference signal sequence should have some functional relationship with the cell ID or user ID so that the party transmitting the zero power reference signal can determine the interference source.

Optionally, for a non-zero power reference signal, the reference signal sequence should have some functional relationship with the cell ID or the user ID, so that the party transmitting the zero power reference signal can determine the interference source.

In the embodiment of the invention, the network side equipment sends first configuration information to the interference terminal and/or sends second configuration information to the interfered terminal, so that the interfered terminal measures the received CLI measurement reference signal according to the second configuration information.

Optionally, when the network side device sends the configuration information to the terminal, the configuration may be performed according to set accuracy (accuracy is adjustable), for example, the accuracy is divided into a cell level and a user level, which respectively represent interference at a measurement cell level and interference at a measurement user level.

For example, cell level: for interfering terminals in the same cell, the configurations are the same, and the configurations of the interfered terminals are the same, for example, if the interfering terminals in cell 1 include UE1 and UE2, the first configuration information of UE1 and UE2 is the same, and if the interfering terminals in cell 2 include UE3 and UE4, the first configuration information of UE3 and UE4 is the same, and the first configuration information of UE2 is different from the first configuration information of UE 4.

User level: the configurations for different users are orthogonal to each other, for example, if there are UE1 and UE2 in the interfering terminal in cell 1, the first configuration information of UE1 and UE2 is different, for example, the measurement time is orthogonal (different), so as to ensure that UE1 and UE2 send reference signals in different time-frequency resources.

As shown in fig. 8, base station 1 determines that the user in cell 1 who needs to turn on CLI measurement is UE2, and UE2 interferes with the terminal; the base station 2 determines that the user needing to start CLI measurement in the cell 2 is UE3, and UE3 is a disturbed terminal; the base station 3 determines that a user needing to start CLI measurement in the cell 3 is the UE5, and the UE5 is a disturbed terminal, after the information used for measurement is interacted among the base station 1, the base station 2 and the base station 3 through a backhaul network, the base station 1 sends first configuration information to the UE2, the base station 2 sends second configuration information to the UE3, and the base station 3 sends second configuration information to the UE5, wherein the second configuration information sent by the base station 1 and the base station 3 are different.

Optionally, the configuration information may also be determined by the scheduling center, and the scheduling center sends the configured first configuration information including RS (Reference Signal, interference measurement Reference Signal) resource configuration information to the first network-side device, and sends the configured second configuration information including RS resource configuration information to the second network-side device, where the scheduling center may be disposed on a network-side device that the scheduling center can control, or may be an independently disposed network-side device.

Specifically, the scheduling center determines resources for performing CLI measurement according to the expected uplink and downlink service configuration information fed back by the network side device; the scheduling center determines a first network side device for processing the uplink service on the resource and a second network side device for processing the downlink service on the resource according to the uplink and downlink service configuration information; the scheduling center allocates the reference signal RS resource to the first network side equipment, wherein the first network side equipment processes the uplink service on the resource for CLI measurement; the first network side equipment instructs the UE to send RS signals to the second network side equipment on the RS resources distributed by the scheduling center; and the second network side equipment instructs the UE to perform CLI measurement (rough measurement) on the RS resource configured to the first network side equipment by the scheduling center.

Optionally, the second network side device reports the CLI measurement result to the scheduling center, and the scheduling center determines the interference coefficient corresponding to the first network side device according to the CLI measurement result reported by the terminal UE of the second network side device; the CLI measurement result is obtained by measuring the UE of the second network side equipment on the RS resource configured to the first network side equipment; the scheduling center reconfigures RS resources for the first network side equipment according to the interference coefficient corresponding to the first network side equipment, wherein the RS resources of the first network side equipment with the large interference coefficient are more than the RS resources of the first network side equipment with the small interference coefficient; the first network side equipment receives the reconfigured RS resource configuration information notified by the scheduling center; the first network side equipment instructs the UE to send the RS signal on the new RS resource; after the CLI measurement result reported by the second network side equipment to the scheduling center, the second network side equipment receives the reconfigured RS resource configuration information notified by the scheduling center; and the second network side equipment instructs the UE to perform CLI measurement (fine measurement) on the time-frequency resource position corresponding to the new RS resource allocated to the first network side equipment.

In the embodiment of the invention, the scheduling center allocates the RS resource for CLI measurement for the first network side equipment which carries out uplink transmission, receives the CLI measurement result which is measured and reported on the corresponding RS resource by the UE of the second network side equipment which carries out downlink transmission, then the scheduling center processes the CLI measurement, and has a preliminary result on the interference intensity of each first network side equipment, and then the RS resource is reallocated according to the interference intensity of each first network side equipment, so that more RS resources can be allocated to the first network side equipment with strong interference to carry out more detailed CLI measurement, the accuracy of the CLI measurement result is improved, and the CLI measurement can be better carried out.

In the embodiment of the present invention, the first configuration information and/or the second configuration information includes, but is not limited to, part or all of the following:

the method comprises the steps of reference signal type used by a user, a measurement period, a measurement frequency point and a measurement starting position.

For example, in the first configuration information sent by the base station 1 to the UE2, the second configuration information sent by the base station 2 to the UE3, and the measurement time slot start position, the configuration cycle, and the like in the second configuration information sent by the base station 3 to the UE5 are the same, so that it is ensured that the UE2, the UE3, and the UE5 perform measurement on the same time-frequency resource, and the first configuration information sent by the base station 1 to the UE2 is different from the second configuration information sent by the base station 2 to the UE3 and the type of the reference signal used by the user in the second configuration information sent by the base station 3 to the UE 5.

The measurement frame structure is shown in fig. 9, where UE2 is a potential interferer, UE3, UE5 is a potential interferer; the reference signal transmitted by the UE2 is a non-zero power SRS1, and the reference signals transmitted by the UE3 and the UE5 are zero power SRS 1. The measurement resources are arranged between the control channel and the data transmission channel, one part of the measurement resources are used for CLI interference measurement, the other part of the measurement resources are used for measurement of original channel information, and the victim monitors the position of the zero power reference signal.

For example, after determining the measurement position, the measurement period, and the like according to the second configuration information, the UE3 and the UE5 perform monitoring at the position of the zero power reference signal (monitor the non-zero power reference signal transmitted by the UE 2). If stronger signal energy is monitored, i.e., the monitored signal energy is greater than a certain threshold, for example, the monitored signal energy of the UE3 is greater than the threshold V1, and the monitored signal energy of the UE5 is less than the threshold V1, it is considered that the UE3 suffers from CLI and the UE5 does not suffer from CLI at this time. The UE3 then feeds back the detected signal energy value to the served base station (i.e., base station 2) along with the sequence used to decode the reference signal, completing the measurement process.

In the embodiment of the present invention, when there are multiple interfering terminals in one cell and multiple interfered terminals in another cell adjacent to the cell, for example, cell 1 is adjacent to cell 2, UE1 and UE2 in cell 1 are interfering terminals, and UE3 and UE4 in cell 2 are interfering terminals, then both UE1 and UE2 send non-zero power reference signals to UE3 and UE4, respectively, and when UE3 or UE4 determines whether the monitored signal energy is greater than a threshold, the monitored signal energy is the sum of the monitored energies of multiple measurement reference signals, for example, UE3 monitors non-zero power reference signal 1 sent by UE1 and non-zero power reference signal 2 sent by UE2, and then determines whether the sum of the received powers of non-zero power reference signal 1 and non-zero power reference signal 2 is greater than the threshold.

The reason why both the UE1 and the UE2 transmit the non-zero power reference signals to the UE3 and the UE4 is considered that the UE1 may cause interference to both the UE3 and the UE4, and similarly, the UE2 may cause interference to both the UE3 and the UE 4.

As shown in fig. 10, an embodiment of the present invention provides a method for measuring cross-link interference, which is applied to a network side device adopting dynamic time division duplex configuration, and specifically includes the following steps:

step 1000, a first network side device determines an interference terminal which is located in a local cell and generates interference to terminals of other cells;

step 1001, the first network side device sends first configuration information to the disturbing terminal, so that the disturbing terminal sends a CLI measurement reference signal according to the first configuration information.

Optionally, the first network side device determines a terminal that may generate interference to terminals of other cells by:

Optionally, the first network side device determines the first configuration information through the following method:

Wherein the measurement information includes part or all of:

Optionally, the sending, by the first network side device, the first configuration information to the interfering terminal includes:

and the first network side equipment sends first configuration information to the interference terminal through RRCReconfig signaling or DCI signaling.

As shown in fig. 11, an embodiment of the present invention provides a method for measuring cross-link interference, which is applied to a network side device adopting dynamic time division duplex configuration, and specifically includes the following steps:

step 1100, a second network side device determines a disturbed terminal which is located at the edge of the cell and can be interfered by terminals of other cells;

step 1101, the second network side device sends second configuration information to the victim terminal, so that the victim terminal measures the received CLI measurement reference signal according to the second configuration information.

Optionally, the second network side device determines the terminal that needs to perform downlink transmission in the cell as the terminal that may be interfered by the terminals of other cells.

Optionally, the second network side device determines the terminal located at the edge of the cell by the following means:

the second network side device takes the terminal with the TA configured for the terminal greater than the TA preset value as the terminal positioned at the edge of the cell; or

And the second network side equipment takes the RSRP (the terminal with the value smaller than the RSRP preset value) of the downlink cell common reference signal as the terminal positioned at the edge of the cell.

Optionally, the second network side device determines the TA preset value in the following manner:

Optionally, the sending, by the second network side device, second configuration information to the victim terminal includes:

Optionally, the second network side device determines the second configuration information through the following method:

wherein the measurement information includes part or all of:

As shown in fig. 12, an embodiment of the present invention provides a method for measuring cross link interference, which is applied to an interfering terminal that needs to send a CLI measurement reference signal in CLI measurement, and specifically includes the following steps:

step 1200, an interfering terminal receives first configuration information sent by a first network side device, wherein the first configuration information is sent by the first network side device to a terminal which is located in a local cell and can generate interference to terminals of other cells;

step 1201, the disturbing terminal sends a CLI measurement reference signal according to the first configuration information.

Optionally, the receiving, by the interference applying terminal, first configuration information sent by the first network side device includes:

As shown in fig. 13, an embodiment of the present invention provides a method for cross link interference measurement, which is applied to a victim terminal that needs to receive a CLI measurement reference signal in CLI measurement, and specifically includes the following steps:

step 1300, receiving, by a victim terminal, second configuration information sent by a second network side device, where the second configuration information is of a terminal that is located at an edge of a local cell and is interfered by terminals of other cells;

and step 1301, the interfered terminal receives a CLI measurement reference signal according to the second configuration information, and measures the received CLI measurement reference signal.

Optionally, the receiving, by the victim terminal, second configuration information sent by a second network side device includes:

As shown in fig. 14, an embodiment of the present invention provides a complete method for cross link interference measurement, which specifically includes the following steps:

step 1400, the base station 1 obtains a TA value of each terminal in the cell 1;

step 1400', the base station 2 obtains the TA value of each terminal in the cell 2;

step 1401, the base station 1 compares the acquired TA value with a TA preset value 1 to determine a terminal located at the edge of the cell 1;

Step 1401', the base station 2 compares the acquired TA value with a TA preset value 2 to determine the terminal located at the edge of the cell 2;

step 1402, the base station 1 takes a terminal which needs to perform uplink transmission in the terminals located at the edge of the cell 1 as an interference terminal;

step 1402', the base station 2 takes a terminal needing downlink transmission in the terminals located at the edge of the cell 2 as a disturbed terminal;

step 1403, exchanging measurement information between the base station 1 and the base station 2 through a backhaul network;

step 1404, the base station 1 determines the first configuration information and sends the first configuration information to the interference terminal;

step 1404', the base station 2 determines the first configuration information and sends the second configuration information to the victim terminal;

step 1405, receiving the first configuration information sent by the base station 1 by the interference terminal;

step 1405', the interfered terminal receives the second configuration information sent by the base station 2;

1406, the interference terminal sends a CLI measurement reference signal according to the first configuration information; step 1406', the victim terminal receiving the CLI measurement reference signal according to the second configuration information;

step 1407, the disturbed terminal sends the measuring result to the base station 2;

step 1408, the base station 2 receives the measurement result sent by the disturbed terminal.

Optionally, the TA preset value 1 and the TA preset value 2 in step 1401 and step 1401' may be the same or different; in addition, step 1400 and step 1401 may be omitted (that is, the interfering terminal determined by the base station 1 may not be located at the edge of the cell 1), that is, the interfering terminal in the cell may be located at the edge of the cell or may not be located at the edge of the cell.

In the embodiment of the present invention, timing problems of the base station 1 sending the first configuration information to the interfering terminal and the base station 2 sending the second configuration information to the interfered terminal are not distinguished, and in addition, the base station 1 obtains the TA value of the terminal in the cell 1, and the base station 2 obtains the TA value of the terminal in the cell 2, and so on, and the timing problems are not distinguished, and there may be a sequence of sending at the same time, where the cell in which the base station 1 is located is the cell 1, and the cell in which the base station 2 is located is the cell 2, that is, between step 1400 and step 1400 ', between step 1401 and step 1401 ', between step 1402 and step 1402 ', and the timing problems between step 1404 and step 1404 ' may not be distinguished, but step 1406 and step 1406 ' need to be performed synchronously.

Based on the same inventive concept, the embodiment of the present invention further provides a device for measuring cross link interference, because the device is the first network side device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 15, a first network-side device for cross-link interference measurement provided in an embodiment of the present application includes: a processor 1500, a memory 1501 and a transceiver 1502.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1501 may store data used by the processor 1500 in performing operations. The transceiver 1502 is used to receive and transmit data under the control of the processor 1500.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1500, and various circuits of memory, represented by memory 1501, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1501 may store data used by the processor 1500 in performing operations.

The processes disclosed in the embodiments of the present invention can be applied to the processor 1500, or implemented by the processor 1500. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits in hardware or instructions in software in the processor 1500. The processor 1500 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1501, and the processor 1500 reads the information in the memory 1501 and completes the steps of the signal processing flow in combination with the hardware thereof.

The processor 1500 is configured to read a program in the memory 1501 and execute the following processes:

Optionally, the processor 1500 is further configured to determine a terminal that may generate interference to terminals of other cells by:

Optionally, the processor 1500 is further configured to determine the first configuration information by:

wherein the measurement information includes part or all of:

Optionally, the processor 1500 is specifically configured to:

Based on the same inventive concept, the embodiment of the present invention further provides a device for measuring cross link interference, because the device is the second network side device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 16, an embodiment of the present invention further provides a second network-side device for cross-link interference measurement, where the second network-side device includes: a processor 1600, a memory 1601, and a transceiver 1602.

The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1601 may store data used by the processor 1600 in performing operations. The transceiver 1602 is used to receive and transmit data under the control of the processor 1600.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1600, and various circuits, represented by memory 1601, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1601 may store data used by the processor 1600 in performing operations.

The processes disclosed in the embodiments of the present invention may be implemented in processor 1600, or may be implemented by processor 1600. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits in hardware or instructions in software in the processor 1600. The processor 1600 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1601, and the processor 1600 reads information in the memory 1601 and completes steps of the signal processing flow in conjunction with hardware thereof.

The processor 1600 is configured to read a program in the memory 1601 and execute the following processes:

Optionally, the processor 1600 is further configured to determine a terminal that may be interfered by terminals of other cells by:

Optionally, the processor 1600 is further configured to determine a terminal located at an edge of the cell by:

taking the terminal with TA configured for the terminal greater than the TA preset value as the terminal positioned at the edge of the cell; or

And taking the terminal with the RSRP value of the public reference signal of the downlink cell smaller than the RSRP preset value as the terminal positioned at the edge of the cell.

Optionally, the processor 1600 is further configured to determine the TA preset value by:

The processor 1600 is further configured to determine the RSRP preset value by:

Optionally, the processor 1600 is further configured to send second configuration information to the victim terminal, including:

Optionally, the processor 1600 is further configured to determine the second configuration information by:

wherein the measurement information includes part or all of:

Based on the same inventive concept, the embodiment of the present invention further provides a device for measuring cross link interference, because the device is an interfering terminal in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are omitted.

As shown in fig. 17, an embodiment of the present invention further provides an interfering terminal for cross-link interference measurement, where the interfering terminal includes: a processor 1700 and a memory 1701, wherein the memory 1701 has stored program code that, when executed by the processor 1700, causes the processor 1700 to perform the following:

Optionally, the processor 1700 is specifically configured to:

Based on the same inventive concept, the embodiment of the present invention further provides a device for measuring cross link interference, because the device is a disturbed terminal in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 18, an embodiment of the present invention further provides a victim terminal for cross-link interference measurement, where the victim terminal includes: a processor 1800 and a memory 1801, wherein the memory 1801 stores program code that, when executed by the processor 1800, causes the processor 1800 to perform the following:

and receiving a CLI measurement reference signal according to the second configuration information, and measuring the received CLI measurement reference signal.

Optionally, the processor 1800 is specifically configured to:

and receiving the first configuration information sent by the second network side equipment through RRCReconfig signaling or DCI signaling.

As shown in fig. 19, an interfering terminal 1900 according to an embodiment of the present invention includes: radio Frequency (RF) circuit 1910, power supply 1920, processor 1930, memory 1940, input unit 1950, display unit 1960, camera 1970, communication interface 1980, and Wireless Fidelity (WiFi) module 1990. Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 19 is not intended to be limiting, and that the terminal provided by the embodiments of the present application may include more or less components than those shown, or some components may be combined, or a different arrangement of components may be provided.

The various components of the terminal 1900 will be described in detail below with reference to fig. 19:

the RF circuitry 1910 may be used for receiving and transmitting data during a communication or conversation. Specifically, the RF circuit 1910 transmits downlink data of a base station to the processor 1930 for processing; and in addition, sending the uplink data to be sent to the base station. Generally, the RF circuitry 1910 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.

In addition, RF circuitry 1910 may also communicate with networks and other terminals via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The WiFi technology belongs to a short-distance wireless transmission technology, and the terminal 1900 may Access an Access Point (AP) through the WiFi module 1990, so as to achieve Access to a data network. The WiFi module 1990 may be used for receiving and transmitting data during communication.

The terminal 1900 may be physically connected to other terminals through the communication interface 1980. Optionally, the communication interface 1980 is connected to the communication interfaces of the other terminals through cables, so as to implement data transmission between the terminal 1900 and the other terminals.

In the embodiment of the present application, the terminal 1900 may implement a communication service to send information to other contacts, so that the terminal 1900 needs to have a data transmission function, that is, the terminal 1900 needs to include a communication module inside. Although fig. 19 shows the communication modules such as the RF circuit 1910, the WiFi module 1990, and the communication interface 1980, it is understood that at least one of the above components or other communication modules (e.g., a bluetooth module) for realizing communication exists in the terminal 1900 for data transmission.

For example, when the terminal 1900 is a mobile phone, the terminal 1900 may include the RF circuit 1910, and may further include the WiFi module 1990; when the terminal 1900 is a computer, the terminal 1900 may include the communication interface 1980 and may further include the WiFi module 1990; when the terminal 1900 is a tablet computer, the terminal 1900 may include the WiFi module.

The memory 1940 may be used to store software programs and modules. The processor 1930 executes various functional applications and data processing of the terminal 1900 by executing software programs and modules stored in the memory 1940, and after the processor 1930 executes the program codes in the memory 1940, part or all of the processes in fig. 12 according to the embodiment of the present invention can be implemented.

Alternatively, the memory 1940 may mainly include a program storage area and a data storage area. The storage program area can store an operating system, various application programs (such as communication application), a face recognition module and the like; the storage data area may store data (such as various multimedia files like pictures, video files, etc., and face information templates) created according to the use of the terminal, etc.

Further, the memory 1940 can include high-speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The input unit 1950 may be used to receive numeric or character information input by a user and generate key signal inputs related to user settings and function control of the terminal 1900.

Optionally, the input unit 1950 may include a touch panel 1951 and other input terminals 1952.

The touch panel 1951, also referred to as a touch screen, may collect touch operations performed by a user on or near the touch panel 1951 (e.g., operations performed by the user on or near the touch panel 1951 using any suitable object or accessory such as a finger, a stylus, etc.) and drive corresponding connection devices according to a predetermined program. Alternatively, the touch panel 1951 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1930, and can receive and execute commands sent by the processor 1930. In addition, the touch panel 1951 may be implemented in various types, such as resistive, capacitive, infrared, and surface acoustic wave.

Optionally, the other input terminals 1952 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 1960 may be used to display information input by a user or information provided to the user and various menus of the terminal 1900. The display unit 1960 is a display system of the terminal 1900, and is used for presenting an interface and realizing human-computer interaction.

The display unit 1960 may include a display panel 1961. Alternatively, the Display panel 1961 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

Further, the touch panel 1951 may cover the display panel 1961, and when the touch panel 1951 detects a touch operation thereon or nearby, the touch panel 1951 transmits the touch operation to the processor 1930 to determine the type of touch event, and then the processor 1930 provides a corresponding visual output on the display panel 1961 according to the type of touch event.

Although the touch panel 1951 and the display panel 1961 are shown in fig. 19 as two separate components to implement the input and output functions of the terminal 1900, in some embodiments, the touch panel 1951 and the display panel 1961 may be integrated to implement the input and output functions of the terminal 1900.

The processor 1930 is a control center of the terminal 1900, connects various parts using various interfaces and lines, performs various functions of the terminal 1900 and processes data by operating or executing software programs and/or modules stored in the memory 1940 and calling data stored in the memory 1940, thereby implementing various services based on the terminal.

Optionally, the processor 1930 may include one or more processing units. Optionally, the processor 1930 may integrate an application processor and a modem processor, where the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1930.

The camera 1970 is configured to implement a shooting function of the terminal 1900 and shoot pictures or videos. The camera 1970 may also be used to implement a scanning function of the terminal 1900, and scan a scanning object (two-dimensional code/barcode).

The terminal 1900 also includes a power supply 1920 (e.g., a battery) for supplying power to the various components. Optionally, the power supply 1920 may be logically connected to the processor 1930 through a power management system, so as to implement functions of managing charging, discharging, power consumption, and the like through the power management system.

Although not shown, the terminal 1900 may further include at least one sensor, an audio circuit, and the like, which will not be described herein.

The memory 1930 may store the same program code as the memory 1701, which when executed by the processor 1930, causes the processor 1930 to implement all of the functions of the processor 1700.

Based on the same inventive concept, the embodiment of the present invention further provides a device for measuring cross link interference, and since the device is a device in the method in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are omitted.

As shown in fig. 20, another interference terminal 2000 according to an embodiment of the present invention includes: radio frequency circuit 2010, power supply 2020, processor 2030, memory 2040, input unit 2050, display unit 2060, camera 2070, communication interface 2080, and wireless fidelity module 2090. Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 20 is not intended to be limiting, and that the terminal provided by the embodiments of the present application may include more or less components than those shown, or some components may be combined, or a different arrangement of components may be provided.

The following describes each constituent element of the terminal 2000 in detail with reference to fig. 20:

the RF circuitry 2010 may be used for receiving and transmitting data during a communication or conversation. Specifically, the RF circuit 2010, after receiving downlink data of a base station, sends the downlink data to the processor 2030 for processing; and in addition, sending the uplink data to be sent to the base station. In general, the RF circuitry 2010 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

In addition, the RF circuit 2010 may also communicate with networks and other terminals via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, global system for mobile communications, general packet radio service, code division multiple access, wideband code division multiple access, long term evolution, email, short message service, and the like.

WiFi technology belongs to short-distance wireless transmission technology, and the terminal 2000 can access the data network through an access point to which the WiFi module 2090 can connect. The WiFi module 2090 may be used for receiving and transmitting data during communication.

The terminal 2000 can be physically connected to other terminals through the communication interface 2080. Optionally, the communication interface 2080 is connected to the communication interface of the other terminal through a cable, so as to implement data transmission between the terminal 2000 and the other terminal.

In the embodiment of the present application, the terminal 2000 is capable of implementing a communication service and sending information to other contacts, so that the terminal 2000 needs to have a data transmission function, that is, the terminal 2000 needs to include a communication module inside. Although fig. 20 illustrates communication modules such as the RF circuit 2010, the WiFi module 2090, and the communication interface 2080, it is understood that at least one of the above components or other communication modules (such as bluetooth module) for implementing communication exist in the terminal 2000 for data transmission.

For example, when the terminal 2000 is a mobile phone, the terminal 2000 may include the RF circuit 2010 and may also include the WiFi module 2090; when the terminal 2000 is a computer, the terminal 2000 may include the communication interface 2080 and may further include the WiFi module 2090; when the terminal 2000 is a tablet computer, the terminal 2000 may include the WiFi module.

The memory 2040 may be used to store software programs and modules. The processor 2030 executes various functional applications and data processing of the terminal 2000 by executing software programs and modules stored in the memory 2040, and when the processor 2030 executes the program codes in the memory 2040, part or all of the processes in fig. 13 according to the embodiment of the present invention can be implemented.

Alternatively, the memory 2040 may mainly include a program storage area and a data storage area. The storage program area can store an operating system, various application programs (such as communication application), a face recognition module and the like; the storage data area may store data (such as various multimedia files like pictures, video files, etc., and face information templates) created according to the use of the terminal, etc.

Further, the memory 2040 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 2050 is operable to receive numeric or character information input by a user and generate key signal inputs related to user settings and function control of the terminal 2000.

Alternatively, the input unit 2050 may include a touch panel 2051 and other input terminals 2052.

The touch panel 2051, also referred to as a touch screen, can collect touch operations performed by a user on or near the touch panel 2051 (for example, operations performed by the user on or near the touch panel 2051 by using any suitable object or accessory such as a finger or a stylus pen), and drive a corresponding connection device according to a preset program. Optionally, the touch panel 2051 may include two parts, namely a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 2030, and can receive and execute commands sent by the processor 2030. In addition, the touch panel 2051 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave.

Optionally, the other input terminals 2052 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 2060 may be used to display information input by the user or information provided to the user and various menus of the terminal 2000. The display unit 2060 is a display system of the terminal 2000, and is used for presenting an interface and realizing human-computer interaction.

The display unit 2060 may include a display panel 2061. Alternatively, the display panel 2061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.

Further, the touch panel 2051 may cover the display panel 2061, and when the touch panel 2051 detects a touch operation on or near the touch panel 2051, the touch operation is transmitted to the processor 2030 to determine the type of touch event, and then the processor 2030 provides a corresponding visual output on the display panel 2061 according to the type of touch event.

Although in fig. 20, the touch panel 2051 and the display panel 2061 are implemented as two separate components to implement the input and output functions of the terminal 2000, in some embodiments, the touch panel 2051 and the display panel 2061 may be integrated to implement the input and output functions of the terminal 2000.

The processor 2030 is a control center of the terminal 2000, connects various components using various interfaces and lines, and performs various functions and processes data of the terminal 2000 by operating or executing software programs and/or modules stored in the memory 2040 and calling data stored in the memory 2040, thereby implementing various services based on the terminal.

Optionally, the processor 2030 may include one or more processing units. Optionally, the processor 2030 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application program, and the like, and the modem processor mainly processes wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 2030.

The camera 2070 is used for implementing the shooting function of the terminal 2000 and shooting pictures or videos. The camera 2070 may also be used to implement a scanning function of the terminal 2000, and scan a scanned object (two-dimensional code/barcode).

The terminal 2000 also includes a power supply 2020 (e.g., a battery) for powering the various components. Optionally, the power supply 2020 may be logically connected to the processor 2030 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

Although not shown, the terminal 2000 may further include at least one sensor, an audio circuit, and the like, which will not be described herein.

Wherein the memory 2030 may store the same program code as the memory 1801, which when executed by the processor 2030, causes the processor 2030 to implement all functions of the processor 1800.

As shown in fig. 21, a first network-side device for cross-link interference measurement according to an embodiment of the present invention includes: first determination module 2100 and first sending module 2101:

the first determination module 2100: the interference terminal is used for determining the interference terminal which is positioned in the cell and can generate interference to the terminals of other cells;

the first transmit module 2101: the method is used for sending first configuration information to an interference terminal so that the interference terminal sends a CLI measurement reference signal according to the first configuration information.

Optionally, the first determining module 2100 is further configured to determine a terminal that may generate interference to terminals of other cells by:

Optionally, the first sending module 2101 is further configured to determine the first configuration information by:

wherein the measurement information includes part or all of:

Optionally, the first sending module 2101 is specifically configured to:

As shown in fig. 22, a second network-side device for cross-link interference measurement according to an embodiment of the present invention includes: the second determining module 2200 and the second sending module 2201:

a second determining module 2200, configured to determine a disturbed terminal that is located at an edge of the local cell and is interfered by terminals of other cells;

a second sending module 2201, configured to send second configuration information to the victim terminal, so that the victim terminal measures the received CLI measurement reference signal according to the second configuration information.

Optionally, the second determining module 2200 is further configured to determine the terminal that may be interfered by the terminals of other cells by:

Optionally, the second determining module 2200 is further configured to determine the terminal located at the edge of the cell by:

Optionally, the second determining module 2200 is further configured to determine the TA preset value by:

the second determining module 2200 is further configured to determine the RSRP preset value by:

Optionally, the second sending module 2201 is specifically configured to:

Optionally, the second sending module 2201 is further configured to determine the second configuration information by:

wherein the measurement information includes part or all of:

As shown in fig. 23, an interfering terminal for measuring cross-link interference according to an embodiment of the present invention includes: the first receiving module 2300 and the third transmitting module 2301:

the first receiving module 2300: the first configuration information is sent by the first network side device to a terminal which is located in the cell and can generate interference to terminals of other cells;

the third transmitting module 2301: for transmitting a CLI measurement reference signal according to the first configuration information.

Optionally, the first receiving module 2300 is specifically configured to:

As shown in fig. 24, a disturbed terminal for cross link interference measurement according to an embodiment of the present invention includes: the second receiving module 2400 and the measuring module 2401:

A second receiving module 2400, configured to receive second configuration information sent by a second network-side device, where the second configuration information is of a terminal that is located at an edge of a local cell and is interfered by terminals of other cells;

a measuring module 2401, configured to receive the CLI sounding reference signal according to the second configuration information, and measure the received CLI sounding reference signal.

Optionally, the second receiving module 2400 is specifically configured to:

An embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes a program code, and when the program code runs on a computing terminal, the program code is configured to enable the computing terminal to perform the steps of the method for measuring cross link interference according to the embodiment of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A system for cross-link interference measurement, wherein the system is adapted to use a dynamic time division duplex configuration, the system comprising:

the interference terminal is used for receiving the first configuration information and sending a Cross Link Interference (CLI) measurement reference signal according to the first configuration information;

2. A method for measuring cross link interference is applied to a network side device adopting dynamic time division duplex configuration, and the method comprises the following steps:

3. The method of claim 2, wherein the first network side device determines the terminal that may interfere with the terminals of other cells by:

4. The method according to claim 2 or 3, wherein the first network side device determines the first configuration information by:

wherein the measurement information includes part or all of:

the method comprises the steps of serving cell Identification (ID), a reference signal generation sequence, the initial position of a measurement time slot, the configuration period of the measurement time slot, the measurement frequency point of an edge user and the user ID in a serving cell.

5. A method for measuring cross link interference is applied to a network side device adopting dynamic time division duplex configuration, and the method comprises the following steps:

6. The method of claim 5, wherein the second network side device determines the terminal located at the edge of the local cell by:

the second network side device takes the terminal with the time advance TA configured for the terminal greater than the TA preset value as the terminal at the edge of the cell; or

And the second network side equipment takes the terminal with the Reference Signal Received Power (RSRP) value of the downlink cell common reference signal smaller than the RSRP preset value as the terminal positioned at the edge of the cell.

7. The method according to claim 5 or 6, wherein the second network side device determines the second configuration information by:

wherein the measurement information includes part or all of:

8. A method for measuring cross link interference is applied to an interfering terminal needing to send a CLI measurement reference signal in CLI measurement, and comprises the following steps:

9. A method for cross-link interference measurement is applied to a disturbed terminal needing to receive a CLI measurement reference signal in CLI measurement, and the method comprises the following steps:

receiving second configuration information sent by second network side equipment by a disturbed terminal, wherein the second configuration information is sent to a terminal which is located at the edge of a local cell and can be interfered by terminals of other cells by the second network side equipment;

10. A network side device for measuring cross link interference, which is applied to a network side device adopting dynamic time division duplex configuration, and the network side device includes: a processor and a memory, wherein the memory stores program code which, when executed by the processor, causes the processor to carry out the steps of the method according to any one of claims 2 to 4 or the steps of the method according to any one of claims 5 to 7.

11. A terminal for cross-link interference measurement, for use in a terminal where CLI occurs, the terminal comprising: a processor and a memory, wherein the memory stores program code which, when executed by the processor, causes the processor to carry out the steps of the method as claimed in claim 8 or the steps of the method as claimed in claim 9.