CN115604827A

CN115604827A - Method, device, network equipment and storage medium for suppressing cross-link interference

Info

Publication number: CN115604827A
Application number: CN202110774927.0A
Authority: CN
Inventors: 洪媛; 李翔; 蒋一鸣; 刘华玲
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2023-01-13

Abstract

The embodiment of the invention provides a method, a device, network equipment and a storage medium for inhibiting cross-link interference. The method comprises the following steps: the method comprises the steps that first network equipment receives interference beam indication information sent by second network equipment; determining a first beam direction in which downlink transmission of first network equipment interferes with uplink transmission of second network equipment according to the interference beam indication information; acquiring target terminal equipment located in a first beam direction in terminal equipment in first network equipment; and adjusting the scheduling time slot of the downlink service of the target terminal equipment. Therefore, the embodiment of the invention inhibits the interference across the link, is not limited by the number of the transmitting beams and the receiving beams of the interference station and the interfered station, and has wider application range.

Description

Method, device, network equipment and storage medium for suppressing cross-link interference

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, a network device, and a storage medium for suppressing cross-link interference.

Background

The 5G NR supports larger bandwidth configuration, and the downlink transmission rate is higher under the current Time Division Duplex (TDD) frame structure ratio (such as 8D2U or 7D 3U), so that the downloading of higher-flow service can be met. When a user has services such as live broadcasting, video telephony and the like, or the industry facing enterprise users (2business, 2b) has scenes such as a high-definition camera, video monitoring return and the like, the TDD frame structure brings certain limitations to uplink capacity, and the user experience of uploading services is influenced. By adding a frame structure time slot ratio (such as 1D 3U), the requirement of an uplink large-flow scene can be met. However, when different frame structures coexist in adjacent regions at the same frequency, serious Cross Link Interference (CLI) is introduced. Therefore, in order to support coexistence of various application scenarios of 5G, research and implementation of how to reduce CLI interference are required.

The CLI interference characteristic is mainly expressed in that a downlink of a base station (called as an interfering station) interferes with an uplink of a neighboring base station (called as an interfered station), and particularly, a 5G adopts a large-scale antenna (Massive MIMO) technology, so that a shaped beam is narrower, coverage is farther, and interference on a CLI scene is stronger, so that interference suppression needs to be realized in a mode of reducing interference of the interfering station to a great extent. For example, fig. 1 is a schematic diagram of a frame structure in a CLI interference scenario, where an interfering station configures a 7D3U frame structure, and a victim station configures a 1D3U frame structure, and CLI interference shows that a D/S slot of the interfering station mainly interferes with a U slot of the victim station. Wherein D represents a downlink time slot, S represents a flexible time slot, and U represents an uplink time slot.

At present, a beam cooperative interference suppression method in a CLI scene is as follows: the victim station sends a coordination request message, and the message indicates the expected uplink receiving beam setting; and after receiving the request message, the interference station reduces the interference on the uplink receiving beam of the interfered station by selecting the downlink sending beam. Or the disturbing station normally sends the beam and transfers the beam information, and the disturbed station adjusts the receiving beam according to the disturbed degree. In summary, the existing beam cooperation scheme mainly reduces interference by a method of interacting and adjusting beam directions of an interfering station and a victim station.

As can be seen from the above description, the current beam coordination scheme mainly reduces CLI interference by means of interaction between the offender station and the victim station and adjustment of beam direction. However, the scheme has limited scenes, for example, when a victim station receives a wide beam, the victim station cannot adjust the direction of the received beam; when the interfering station adjusts the beam direction, if the adjustment of the beam angle is large, the coverage of the user in the beam direction of the interfering station is affected, and if the adjustment angle of the beam is small, the interference suppression effect is affected.

Thus, the effect of suppressing cross-link interference in the prior art is limited by the number of transmit and receive beams of victim and offender stations.

Disclosure of Invention

Embodiments of the present invention provide a method, an apparatus, a network device, and a storage medium for suppressing cross-link interference, so as to solve a problem that an effect of suppressing cross-link interference in the prior art is limited by the number of beams transmitted and received by a victim station and an aggressor station.

In a first aspect, an embodiment of the present invention provides a method for suppressing cross-link interference, which is applied to a first network device, and the method includes:

receiving interference beam indication information sent by second network equipment;

determining a first beam direction in which downlink transmission of the first network equipment interferes with uplink transmission of the second network equipment according to the interference beam indication information;

acquiring target terminal equipment located in the first beam direction in terminal equipment in the first network equipment;

and adjusting the scheduling time slot of the downlink service of the target terminal equipment.

Optionally, the obtaining, among the terminal devices in the first network device, a target terminal device located in the first beam direction includes:

acquiring first terminal equipment in a cell access process in terminal equipment in the first network equipment;

determining a target synchronization signal block having a mapping relation with a target preamble according to a predetermined mapping relation between the preamble and the synchronization signal block, wherein the target preamble is a preamble used for random access of the first terminal device;

and acquiring the terminal equipment in the first terminal equipment, wherein the beam direction of the target synchronization signal block is the same as the first beam direction, and the terminal equipment is taken as the target terminal equipment.

Optionally, the obtaining, in the terminal device in the first network device, a target terminal device located in the first beam direction further includes:

acquiring a second terminal device in a connection state in the terminal devices in the first network device;

determining a second beam direction indicated by first indication information reported by the second terminal device, wherein the first indication information is used for indicating a beam with a strongest channel state information reference signal;

and acquiring the terminal equipment in the second terminal equipment, wherein the second beam direction is the same as the first beam direction, as the target terminal equipment.

Optionally, the adjusting the scheduling time slot of the downlink service of the target terminal device includes:

scheduling the downlink service of the target terminal equipment in a non-crossed time slot;

the non-crossed time slots are downlink time slots and flexible time slots of the first network equipment, uplink time slots of the second network equipment and non-crossed time slots.

Optionally, after obtaining, in the terminal device in the first network device, a target terminal device located in the first beam direction, the method further includes:

and adjusting the scheduling time slot of the control channel of the target terminal equipment.

Optionally, the adjusting the scheduling time slot of the control channel of the target terminal device includes:

scheduling a control channel of the target terminal device in a non-cross time slot;

the non-crossed time slot is a downlink time slot and a flexible time slot of the first network equipment, and an uplink time slot and a non-crossed time slot of the second network equipment.

and adjusting the scheduling time slot of the physical downlink control channel of the uplink authorization sent by the target terminal equipment.

In a second aspect, an embodiment of the present invention further provides a method for suppressing cross-link interference, which is applied to a second network device, and the method includes:

acquiring interference beam indication information, wherein the interference beam indication information is used for indicating a first beam direction in which downlink transmission of first network equipment interferes with uplink transmission of second network equipment;

transmitting the interference beam indication information to the first network device.

Optionally, the obtaining interference beam indication information includes:

measuring uplink received interference power of a beam pre-configured to the first network device;

and determining the identification information of the beam direction with the maximum uplink received interference power as the interference beam indication information.

In a third aspect, an embodiment of the present invention further provides a network device, where the network device is a first network device;

the network device includes a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

controlling the transceiver to receive interference beam indication information sent by second network equipment;

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device is a second network device;

the network device includes a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

control the transceiver to transmit the interference beam indication information to the first network device.

In a fifth aspect, an embodiment of the present invention provides an apparatus for suppressing cross-link interference, where the apparatus is applied to a first network device, and the apparatus includes:

a first receiving module, configured to receive interference beam indication information sent by a second network device;

an interference direction determining module, configured to determine, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device;

a device obtaining module, configured to obtain a target terminal device located in the first beam direction from terminal devices in the first network device;

and the first adjusting module is used for adjusting the scheduling time slot of the downlink service of the target terminal equipment.

In a sixth aspect, an embodiment of the present invention provides an apparatus for suppressing cross-link interference, where the apparatus is applied to a second network device, and the apparatus includes:

an indication information obtaining module, configured to obtain interference beam indication information, where the interference beam indication information is used to indicate a first beam direction in which downlink transmission of a first network device interferes with uplink transmission of a second network device;

a first sending module, configured to send the interference beam indication information to the first network device.

In a seventh aspect, an embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the method for suppressing cross-link interference according to any of the foregoing claims.

In the embodiment of the present invention, a first network device receives interference beam indication information sent by a second network device, so as to determine, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device, further obtain a target terminal device located in the first beam direction in a terminal device in the first network device, and adjust a scheduling time slot of a downlink service of the target terminal device.

Therefore, in the embodiment of the present invention, the interference of the first network device to the second network device in the first beam direction is suppressed by adjusting the scheduling timeslot of the downlink service of the terminal device located in the first beam direction in the interfering station by the interfering station, without changing the beam directions of the interfering station and the interfered station, and therefore, the embodiment of the present invention suppresses the interference across the link, is not limited by the number of the transmission beams and the number of the reception beams of the interfering station and the interfered station, and has a wider application range.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic diagram of cross-link interference of different frame structures in TDD in the prior art;

fig. 2 is a flowchart of a method for suppressing cross-link interference applied to a first network device according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating interference beam directions according to an embodiment of the present invention;

fig. 4 is a diagram illustrating UL Grant scheduling adjustment according to an embodiment of the present invention;

fig. 5 is a flowchart of a method for suppressing cross-link interference applied to a second network device according to an embodiment of the present invention;

fig. 6 is a block diagram of a structure of an apparatus for suppressing cross-link interference applied to a first network device according to an embodiment of the present invention;

fig. 7 is a block diagram of a structure of an apparatus for suppressing cross-link interference applied to a second network device according to an embodiment of the present invention;

fig. 8 is a block diagram of a network device according to an embodiment of the present invention.

Detailed Description

In the embodiment of the present invention, the term "and/or" describes an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B, and 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.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all 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 application.

Embodiments of the present application provide a method, an apparatus, a network device, and a storage medium for suppressing cross-link interference, so as to solve the problem that an effect of suppressing cross-link interference in the prior art is limited by the number of beams transmitted and received by a victim station and an aggressor station.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

In addition, the technical scheme provided by the embodiment of the application can be applied to various systems, especially 5G systems. For example, suitable systems may be global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, long term evolution (long term evolution) systems, LTE-a systems, universal mobile systems (universal mobile telecommunications systems, UMTS), universal internet Access (world interoperability for microwave Access (WiMAX) systems, new Radio interface (NR) systems, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), may also be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), may also be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico) and the like, and the present application is not limited in this embodiment. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

Fig. 2 is a flowchart illustrating a method for suppressing cross-link interference according to an embodiment of the present invention. The method is applied to a first network device, wherein the first network device is an interfering station, and a second network device as described below is an interfered station.

As shown in fig. 2, the method may include the following steps S201 to S204.

Step S201: and receiving interference beam indication information sent by the second network equipment.

The method comprises the steps that a first network device (namely, an interference applying station) can send a remote interference management reference signal (RIM-RS) to a second network device (namely, an interfered station), wherein the RIM-RS carries a cell identifier and beam information of the first network device; the second network device may measure the received uplink received interference power of the RMS-RS, and thereby send the identification information of the beam direction having the largest uplink received interference power as the interference indication information to the first network device.

Therefore, the interference beam indication information is used for indicating the beam direction in which the interference station interferes the interfered station most strongly.

Step S202: and determining a first beam direction in which downlink transmission of the first network equipment interferes with uplink transmission of the second network equipment according to the interference beam indication information.

When different frame structures coexist in adjacent regions at the same frequency, a severe CLI is introduced, so that the frequencies of the first network device and the second network device in the first beam direction are the same.

In addition, since the interference beam indication information is used to indicate a beam direction in which the interfering station interferes with the interfered station most strongly, the first beam direction is a beam direction in which the first network device interferes with the second network device most strongly, that is, the first beam direction is a strongest interference beam direction.

Step S203: and acquiring target terminal equipment located in the first beam direction in the terminal equipment in the first network equipment.

Therefore, in order to suppress the interference, in the embodiment of the present invention, it is necessary to acquire a target terminal device in the first network device in the first beam direction, so as to adjust a scheduling time slot of a downlink service of the terminal device.

Step S204: and adjusting the scheduling time slot of the downlink service of the target terminal equipment.

In the embodiment of the present invention, the scheduling time slot of the downlink service of the target terminal device is adjusted, so that the downlink service of the target terminal device is staggered from the uplink transmission time slot of the second network device, thereby preventing the downlink transmission of the first network device in the first beam direction from affecting the uplink transmission of the second network device.

As can be seen from the foregoing steps S201 to S204, in the embodiment of the present invention, the first network device receives the interference beam indication information sent by the second network device, so that according to the interference beam indication information, it is determined that downlink transmission of the first network device interferes with a first beam direction of uplink transmission of the second network device, and then obtains a target terminal device located in the first beam direction in the terminal devices in the first network device, and adjusts a scheduling time slot of downlink service of the target terminal device.

Therefore, in the embodiment of the present invention, the interference of the first network device to the second network device in the first beam direction is suppressed by adjusting the scheduling time slot of the downlink traffic of the terminal device located in the first beam direction in the interfering station by the interfering station, without changing the beam directions of the interfering station and the interfered station.

Optionally, the obtaining, in the terminal device in the first network device, a target terminal device located in the first beam direction includes:

acquiring first terminal equipment in a cell access process from terminal equipment in the first network equipment;

determining a target synchronization signal block which has a mapping relation with a target lead code according to a predetermined mapping relation between the lead code and the synchronization signal block, wherein the target lead code is a lead code used by the first terminal equipment for random access;

Wherein the network device transmits Synchronization Signal Blocks (SSBs) in multiple narrow beam directions and configures different access preamble index ranges for different SSBs. Therefore, when the terminal device accesses the network device, the signal strength of each SSB is measured first, and then the preamble corresponding to the SSB with the strongest signal is selected for random access; after the network device detects the preamble, the SSB beam direction in which the terminal device is located may be determined according to the preamble index.

Therefore, in the embodiment of the present invention, for a first terminal device in an access process in a first network device, the first network device may determine, according to a mapping relationship between a preamble and an SSB, a target SSB having a mapping relationship with the preamble used by the first terminal device for random access. The target SSB having a mapping relationship with the preamble used for random access by the first terminal device is the SSB where the first terminal device is located.

In addition, after determining the SSB in which the first terminal device in the access process is located in the first network device, the method may compare whether the beam direction of the SSB is the same as the first beam direction (i.e., the direction of the strongest interference beam), and if the beam direction of the SSB is the same as the first beam direction, determine that the first terminal device in the SSB is located in the direction of the strongest interference beam. For example, as shown in fig. 3, UE1 and UE2 are both first terminal devices in an access process in a first network device, and if a beam direction of an SSB where UE1 is located is the same as a strongest interference beam direction, UE1 is located in the strongest interference beam direction; if the beam direction of the SSB where the UE2 is located is different from the strongest interfering beam direction, the UE2 is not located in the strongest interfering beam direction.

determining a second beam direction indicated by first indication information reported by the second terminal equipment, wherein the first indication information is used for indicating a beam with a strongest channel state information reference signal;

and acquiring terminal equipment in the second terminal equipment, wherein the second beam direction is the same as the first beam direction, and the terminal equipment is taken as the target terminal equipment.

When the terminal device is in a connected state in a cell, the beam direction in which the terminal device is located may change in consideration of the mobility of the terminal device, and therefore the network device needs to track the beam position in which the terminal device is located in real time. The channel state information reference signal (CSI-RS) introduced by NR can be used not only for channel measurement, but also for presenting information of multiple beam directions, that is, narrow beams in multiple directions are transmitted by forming. Therefore, when the network device sends CSI-RS signals in multiple beam directions and configures the terminal device to perform measurement reporting of beam information, the terminal device performs measurement reporting of beam information according to the configured time granularity, where the reporting information includes a beam indication that the CSI-RS signal is strongest. The network device may determine the reported beam indication, and if the beam indication of a certain terminal device is consistent with the first beam direction (i.e., the direction of the strongest interference beam), the terminal device is located in the direction of the strongest interference beam.

As can be seen from the above, in the embodiment of the present invention, if the terminal device in the first network device is in the cell access process, it determines whether the terminal device is in the strongest interference beam direction according to the beam direction of the SSB having the mapping relationship in the preamble used by the random access; if the first network equipment is in the connection state, judging whether the first network equipment is in the direction of the strongest interference wave beam according to the direction of the strongest wave beam of the CSI-RS reported to the first network equipment.

In addition, the crossing time slot is a downlink time slot and a flexible time slot of the first network device, and is a crossing time slot of an uplink time slot of the second network device.

Therefore, in the embodiment of the present invention, for the target terminal device located in the direction of the strongest interference beam in the first network device, the downlink service of the target terminal device is scheduled in the non-cross time slot, and the scheduling is not performed in the cross time slot, so as to avoid affecting the second network device in the direction of the strongest interference beam. For terminal devices within the first network device that are not in the direction of the strongest interfering beam, all timeslots may be scheduled. For example, UE1 shown in fig. 3 is in the direction of the strongest interfering beam, and it schedules downlink traffic in non-intersecting time slots; UE2 is not in the direction of the strongest interfering beam, it can be scheduled normally in all time slots, i.e. UE2 traffic is not affected.

Specifically, for example, as shown in fig. 1, a downlink time slot D and a flexible time slot S of the offender station and an uplink time slot U of the victim station have cross time slots. Therefore, in fig. 1, the slots with slot numbers 2, 3, and 7 are crossing slots, and the slots other than the slots with slot numbers 2, 3, and 7 are non-crossing slots, that is, the slots with

slot numbers

0, 1, 4, 5, 6, 8, and 9 are non-crossing slots. Therefore, for a terminal device in the direction of the strongest interference beam in the interfering station, it may schedule downlink traffic in the time slots with the

time slot numbers

0, 1, 4, 5, 6, 8, and 9, and may not schedule downlink traffic in the time slots with the time slot numbers 2, 3, and 7.

Optionally, in the acquiring of the terminal device in the first network device, after the target terminal device located in the first beam direction, the method further includes:

In the embodiment of the present invention, the scheduling time slot of the control channel of the target terminal device is adjusted, so that the scheduling time slot of the control channel of the target terminal device is staggered with the uplink transmission time slot of the second network device, thereby further avoiding reducing interference on uplink transmission of the second network device.

scheduling a control channel of the target terminal equipment in a non-crossed time slot;

Therefore, in the embodiment of the present invention, for the target terminal device located in the direction of the strongest interference beam in the first network device, the control channel of the target terminal device is scheduled in the non-intersecting time slot, and scheduling is not performed in the intersecting time slot, thereby avoiding affecting the second network device in the direction of the strongest interference beam. For terminal devices in the first network device that are not in the direction of the strongest interfering beam, all timeslots can schedule control channels.

and adjusting the scheduling time slot of the physical downlink control channel of the target terminal equipment for sending the uplink authorization.

In an embodiment of the present invention, the control channel refers to a Physical Downlink Control Channel (PDCCH) transmitting a downlink Grant (DL Grant) and an uplink Grant (UL Grant). Wherein, the interfering station does not transmit the PDCCH of the DL grant without scheduling downlink traffic. However, for the UL Grant message for scheduling the uplink service, the UL Grant message is also transmitted on the PDCCH channel and CLI interference is generated, and at this time, by adjusting the uplink scheduling timing, CLI interference generated by the control channel in the direction of the strongest interference beam can be avoided.

The scrambling station can move the PDCCH for scheduling the UL grant to non-cross time slot for transmission by adjusting the scheduling time sequence. For example, as shown in fig. 4, the timeslots with timeslot numbers 2, 3, and 7 are cross timeslots, and taking the structure of the scrambling station 7D3U frame as an example, the UL grant of the timeslot with timeslot number 4 is adjusted to be issued by timeslot number 1, and the UL grants of the timeslots with

timeslot numbers

8 and 9 are respectively adjusted to be issued by

timeslot numbers

5 and 6, so as to avoid scheduling PDCCH channels for transmitting the UL grant in the cross timeslot.

As can be seen from the above, in the embodiment of the present invention, the interfering station performs scheduling avoidance on the traffic channel and the control channel, so as to suppress the CLI interference caused by user scheduling in the direction of the strongest interfering beam to a greater extent.

In summary, in the embodiments of the present invention, on the basis of the interference beam indication information fed back by the interfered station, the interfering station may determine the direction of the strongest interference beam, so as to determine whether the terminal device in the interfering station is located in the direction of the strongest interference beam. The terminal equipment in the direction of the strongest interference wave beam not only adjusts the sending time of the downlink service wave beam, but also adjusts the time sequence position of the control channel, thereby not only effectively reducing the user wave beam interference on the cross time slot, but also not affecting the terminal equipment in the direction of the non-strongest interference wave beam of the interference station. Therefore, compared with the existing beam cooperation technology, the embodiment of the invention is not limited by the number of the sending and receiving beams of the interference station and the interfered station, the scheme is more flexible, and the application range is wider in the CLI scene.

Fig. 5 is a flowchart illustrating a method for suppressing cross-link interference according to an embodiment of the present invention. The method is applied to a second network device, wherein the second network device is a victim station, and the first network device is an aggressor station as described below.

As shown in fig. 5, the method may include the following steps S501 to S502.

Step S501: interference beam indication information is acquired.

The interference beam indication information is used for indicating a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device.

Step S502: transmitting the interference beam indication information to the first network device.

In the implementation of the present invention, the second network device sends interference beam indication information to the first network device, so that the first network device determines, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device, thereby obtaining a target terminal device located in the first beam direction in the terminal devices in the first network device, and adjusting a scheduling time slot of downlink traffic of the target terminal device.

Optionally, the obtaining interference beam indication information includes:

In the embodiment of the present invention, a first network device (i.e., an interfering station) may send a remote interference management reference signal (RIM-RS) to a second network device (i.e., an interfered station), where the RIM-RS carries a cell identifier and beam information of the first network device; the second network device may measure the received uplink received interference power of the RMS-RS, and thereby send the identification information of the beam direction having the largest uplink received interference power as the interference indication information to the first network device.

With the above description of the method for suppressing cross-link interference according to the embodiment of the present invention, the apparatus for suppressing cross-link interference according to the embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 6, an embodiment of the present invention further provides an apparatus for suppressing cross-link interference, which is applied to a first network device, and as shown in fig. 6, the apparatus includes:

a first receiving module 601, configured to receive interference beam indication information sent by a second network device;

an interference direction determining module 602, configured to determine, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device;

a device obtaining module 603, configured to obtain a target terminal device located in the first beam direction from terminal devices in the first network device;

a first adjusting module 604, configured to adjust a scheduling time slot of a downlink service of the target terminal device.

Optionally, the device acquiring module 603 includes:

the first obtaining submodule is used for obtaining first terminal equipment in a cell access process in the terminal equipment in the first network equipment;

the first determining submodule is used for determining a target synchronization signal block which has a mapping relation with a target lead code according to the mapping relation between the lead code and the synchronization signal block, wherein the target lead code is used by the first terminal equipment for random access;

and a second obtaining sub-module, configured to obtain, as the target terminal device, a terminal device in the first terminal device, where a beam direction of the target synchronization signal block is the same as the first beam direction.

Optionally, the device acquiring module 603 further includes:

a third obtaining submodule, configured to obtain a second terminal device in a connected state from the terminal devices in the first network device;

a second determining submodule, configured to determine a second beam direction indicated by first indication information reported by the second terminal device, where the first indication information is used to indicate a beam with a strongest channel state information reference signal;

and a fourth obtaining sub-module, configured to obtain, as the target terminal device, a terminal device in the second terminal device, where the second beam direction is the same as the first beam direction.

Optionally, the first adjusting module 604 is specifically configured to:

Optionally, the apparatus further comprises:

and the second adjusting module is used for adjusting the scheduling time slot of the control channel of the target terminal equipment.

Optionally, the second adjusting module is specifically configured to:

As can be seen from the above, in the embodiment of the present invention, the first network device receives the interference beam indication information sent by the second network device, so as to determine, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device, further obtain, from terminal devices in the first network device, a target terminal device located in the first beam direction, and adjust a scheduling time slot of downlink traffic of the target terminal device.

Referring to fig. 7, an embodiment of the present invention further provides an apparatus for suppressing cross-link interference, which is applied to a second network device, and as shown in fig. 7, the apparatus includes:

an indication information obtaining module 701, configured to obtain interference beam indication information, where the interference beam indication information is used to indicate a first beam direction in which downlink transmission of a first network device interferes with uplink transmission of a second network device;

a first sending module 702, configured to send the interference beam indication information to the first network device.

Optionally, the indication information obtaining module 701 is specifically configured to:

As can be seen from the above, in the implementation of the present invention, the second network device sends the interference beam indication information to the first network device, so that the first network device determines, according to the interference beam indication information, a first beam direction in which downlink transmission of the first network device interferes with uplink transmission of the second network device, further obtains a target terminal device located in the first beam direction in terminal devices in the first network device, and adjusts a scheduling time slot of downlink traffic of the target terminal device.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are not repeated herein.

An embodiment of the present invention further provides a network device, as shown in fig. 8, the network device includes a memory 820, a transceiver 810, and a processor 800;

a memory 820 for storing a computer program;

a transceiver 810 for receiving and transmitting data under the control of the processor 800;

in a first aspect, when the network device is a first network device, the processor 800 is configured to read the computer program in the memory 820 and execute the following operations:

controlling the transceiver 810 to receive interference beam indication information transmitted by a second network device;

Optionally, when obtaining a target terminal device located in the first beam direction in the terminal devices in the first network device, the processor 800 is specifically configured to:

Optionally, when acquiring the target terminal device located in the first beam direction in the terminal devices in the first network device, the processor 800 is further configured to:

Optionally, when adjusting the scheduling time slot of the downlink service of the target terminal device, the processor 800 is specifically configured to:

Optionally, the processor 800 is further configured to:

Optionally, when adjusting the scheduling time slot of the control channel of the target terminal device, the processor 800 is specifically configured to:

In a second aspect, when the network device is a second network device, the processor 800 is configured to read the computer program in the memory 820 and execute the following operations:

control the transceiver 810 to transmit the interference beam indication information to the first network device.

Optionally, when obtaining the interference beam indication information, the processor 800 is specifically configured to:

Wherein in fig. 8 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 800 and various circuits of memory represented by memory 820 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 transceiver 810 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

The processor 800 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and the processor 800 may also have a multi-core architecture.

Embodiments of the present invention also provide a processor-readable storage medium having stored thereon a computer program for causing a processor to execute a method of suppressing cross-link interference.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

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

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

Claims

1. A method for suppressing cross-link interference, applied to a first network device, the method comprising:

2. The method of claim 1, wherein the obtaining a target terminal device located in the first beam direction from among terminal devices in the first network device comprises:

3. The method of claim 2, wherein the obtaining a target terminal device located in the first beam direction from among terminal devices in the first network device, further comprises:

4. The method of claim 1, wherein the adjusting the scheduling time slot of the downlink traffic of the target terminal device comprises:

5. The method of claim 1, wherein the obtaining of the target terminal device located in the first beam direction among the terminal devices in the first network device, the method further comprises:

6. The method of claim 5, wherein the adjusting the scheduled time slot of the control channel of the target terminal device comprises:

7. The method of claim 5, wherein the adjusting the scheduled time slot of the control channel of the target terminal device comprises:

8. A method for suppressing cross-link interference, applied to a second network device, the method comprising:

9. The method of claim 8, wherein the obtaining interference beam indication information comprises:

10. A network device, wherein the network device is a first network device;

the network device includes a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:

11. A network device, wherein the network device is a second network device;

the network device includes a memory, a transceiver, a processor:

12. An apparatus for suppressing cross-link interference, the apparatus being applied to a first network device and comprising:

the first receiving module is used for receiving interference beam indication information sent by second network equipment;

13. An apparatus for suppressing cross-link interference, the apparatus being applied to a second network device, the apparatus comprising:

14. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 7, or to perform the method of any one of claims 8 to 9.