JP6884907B2 - Methods and devices for eliminating cell-to-cell interference - Google Patents

Description

Examples of the present invention relate to the field of communication, and more specifically to methods and devices for eliminating cell-cell interference.

The 4th generation (4G) communication system employs Orthogonal Frequency Division Multiple Access (OFDMA) technology, which itself does not support cell-to-cell interference suppression technology (ICIC). : Inter-Cell Interference Coordination) has been introduced. However, ICIC can obtain a good interference adjustment effect only in a system with a relatively light load, and it is difficult to obtain a gain when the number of users is large and the system capacity is saturated. Is. Fifth generation (5G) communication systems will employ ultra-high density networking and network slicing technology. Different network slicing can use different time-frequency resources, different transmission technologies (eg duplex mode, multiplex access technology, etc.) and different physical layer parameters (eg, subcarrier spacing, frame structure, common channel switch). Etc.) and can be carried by different types of network nodes (eg, 4G base stations, 5G base stations, relay stations, inter-equipment communication nodes, etc.). Therefore, in the context of ultra-high density networking, multiple cells corresponding to different network slicing can overlap at one geographical location and cause cell-to-cell interference, and how to cause cell-to-cell interference in that context. Whether to remove it is a technical issue that must be resolved immediately.

The embodiments of the present invention provide methods and devices for eliminating cell-to-cell interference that can achieve elimination of cell-to-cell interference.

According to the first aspect, a method for eliminating cell-cell interference is provided. In the method, the first transmission / reception node acquires the interference information of the potential interference cell, and the first transmission / reception node transmits the interference information of the potential interference cell to the first terminal equipment. Including, here, the potential interference cell belongs to the second transmission / reception node, and the interference information of the potential interference cell includes the duplex mode information of the potential interference cell and the multiple access technology of the potential interference cell. Information, the physical layer parameters of the potential interfering cell in each first transmission resource pool in at least one first transmission resource pool, and each second in at least one second transmission resource pool. Includes at least one of the resource allocation information of the potential interfering cell in the transmission resource pool.

Optionally, the potential interfering cell may be a potential interfering cell of a first terminal facility serviced by the first transmitting and receiving node.

As an option, the data transmission between the potential interfering cell and the second terminal equipment receiving the service of the potential interfering cell is the data transmission between the first transmitting / receiving node and the first terminal equipment. On the other hand, it is currently causing or may cause interference.

Therefore, according to the method for eliminating cell-to-cell interference according to the embodiment of the present invention, the second transmission / reception node transmits the interference information of the potential interference cell to the first transmission / reception node, and the first transmission / reception node. Transmits the interference information of each potential interference cell in at least one potential interference cell received by the first terminal equipment to the interference information of at least one potential interference cell received by the first terminal equipment. By performing interference removal based on this, it is beneficial for inter-cell interference removal and system performance can be improved.

In the first feasible method of the first aspect, the acquisition of the interference information of the potential interference cell by the first transmission / reception node means that the first transmission / reception node belongs to the potential interference cell. This includes receiving the interference information of the potential interference cell transmitted by the transmitting / receiving node of 2.

Combined with the above feasible method, in the second feasible method of the first aspect, the first transmit and receive node is the potential transmitted by the second transmit and receive node to which the potential interfering cell belongs. Before receiving the interference information of the target interference cell, the method is such that the first transmission / reception node transmits the interference information of the potential interference cell in the at least one target transmission resource pool. Further including transmitting a request instruction for requesting to the second transmission / reception node, the first transmission / reception node transmits the potential transmission by the second transmission / reception node to which the potential interference cell belongs. Receiving the interference information of the target interference cell means that the first transmission / reception node is each target transmission resource pool in the at least one target transmission resource pool to which the second transmission / reception node is transmitted according to the request instruction. Including receiving the interference information of the potential interference cell in.

In this way, the first transmission / reception node uses the request instruction to be transmitted to the second transmission / reception node of the second transmission / reception node (or the target cell of the second transmission / reception node) in the target transmission resource range. By requesting interference information (eg, transmission technology and / or physical layer parameters), the second transmit / receive node targets the second transmit / receive node (or the target of the second transmit / receive node) within the target transmission resource range. Only the interference information of the cell) can be transmitted to the first transmission / reception node, and the interference information of the second transmission / reception node (or the target cell of the second transmission / reception node) in the entire transmission resource range can be transmitted. Since it is not necessary to feed back the signal, the signaling overhead can be reduced.

The first transmission / reception node executes resource scheduling based on the target transmission resource range specified in the request instruction, and allocates the resources of the first transmission / reception node as much as possible to the resources of the second transmission / reception node. By matching the allocation, the complexity of the cell-to-cell interference elimination algorithm can be reduced.

According to the second aspect, a method for removing another type of cell-to-cell interference is provided, in which the first terminal equipment provides interference information of a potential interference cell transmitted by a first transmit / receive node. The potential includes that the first terminal equipment performs interference removal on the signal received from the first transmission / reception node based on the interference information of the potential interference cell. The interference information of the target interference cell is the duplex mode information of the potential interference cell, the multiple access technical information of the potential interference cell, and each first transmission resource pool in at least one first transmission resource pool. Includes at least one of the physical layer parameters of the potential interfering cell and the resource allocation information of the potential interfering cell in each second transmission resource pool in at least one second transmission resource pool. ..

According to the third aspect, a method for removing another type of cell-to-cell interference is provided, in which the second transmission / reception node determines the interference information of the first cell, and the second method. The transmission / reception node includes transmitting the interference information of the first cell to the first transmission / reception node, where the first cell belongs to the second transmission / reception node and the first cell. The interference information includes the duplex mode information of the first cell, the multiple access technical information of the first cell, and the first transmission resource pool in each first transmission resource pool in at least one first transmission resource pool. Contains at least one of the physical layer parameters of the cell and the resource allocation information of the first cell in each second transmission resource pool in at least one second transmission resource pool.

Optionally, the first cell belongs to the second transmit / receive node, and the first cell is a potential interference cell of the first terminal equipment that receives the service of the first transmit / receive node. You may.

Optionally, the duplex mode information in the first cell includes information on the duplex mode adopted by the first cell in each third transmission resource pool in at least one third transmission resource pool. ..

As an option, the multiple access technology information of the first cell includes information on the multiple access technology adopted by the first cell in each fourth transmission resource pool in the at least one fourth transmission resource pool. ..

As an option, the resource allocation information of the first cell in the second transmission resource pool is in at least one second terminal facility that receives the service of the first cell in the second transmission resource pool. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the first cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the terminal equipment of.

Optionally, the method is such that the second transmit / receive node is transmitted by the first transmit / receive node before the second transmit / receive node transmits the interference information of the first cell to the first transmit / receive node. The request instruction further includes receiving the request instruction, which requests the second transmission / reception node to transmit the interference information of the first cell in the at least one target transmission resource pool. The second transmission / reception node transmits the interference information of the first cell to the first transmission / reception node, so that the second transmission / reception node at least according to the request instruction. Including transmitting the interference information of the first cell in each target transmission resource pool in one target transmission resource pool to the first transmission / reception node, here, the potential in the target transmission resource pool. The interference information of the interference cell includes the duplex mode information of the potential interference cell in the target transmission resource pool, the multiple access technical information of the potential interference cell in the target transmission resource pool, and the potential transmission resource pool. It includes at least one of the physical layer parameters of the interfering cell and the resource allocation information of the potential interfering cell in the target transmission resource pool.

In some aspects of the invention, optionally, the at least one first transmission resource pool may be all or part of the transmission resource pool allocated to the potential interfering cell.

In some aspects of the invention, optionally, the at least one second transmission resource pool may be all or some of the transmission resource pools allocated for the potential interfering cell.

In some aspects of the invention, the duplex mode information of the potential interfering cell is the duplex mode adopted by the potential interfering cell in each third transmission resource pool in at least one third transmission resource pool. Contains information about.

In some embodiments of the invention, optionally, the duplex mode may be one of frequency division duplex, time division duplex, inter-equipment D2D, and full duplex.

In some aspects of the invention, optionally, the at least one third transmission resource pool may be all or some of the transmission resource pools allocated for the potential interfering cell.

In certain aspects of the invention, optionally, the multiple access technology information for the potential interfering cell is adopted by the potential interfering cell in each fourth transmission resource pool within at least one fourth transmission resource pool. Contains information on multiple access technologies.

In some embodiments of the invention, the multiple access technique may optionally be one of orthogonal frequency split multiple access OFDMAs, filtered OFDMA, CDMA, and non-orthogonal multiple access techniques.

In some aspects of the invention, optionally, the at least one fourth transmission resource pool may be all or some of the transmission resource pools allocated for the potential interfering cell.

In some embodiments of the invention, the physical layer parameter optionally comprises at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

In some embodiments of the invention, the frame structure parameters are optionally subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, and within the frame. Includes at least one of the common channel configuration and the control channel configuration within the frame.

In some aspects of the invention, optionally, the subframe structural parameters are included in the uplink resource configuration and downlink resource configuration within the subframe, the common channel configuration within the subframe, and the control channel configuration within the subframe. Includes at least one of.

In some embodiments of the invention, optionally, the resource allocation information for the potential interfering cell in the second transmission resource pool is at least one serviced by the potential interfering cell in the second transmission resource pool. The configuration information of the terminal identification reference signal of each second terminal equipment in the second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the relevant Includes at least one of the transmission resource information in the second transmission resource pool that the potential interference cell has assigned to each second terminal facility.

In certain aspects of the invention, optionally, the interference information of the potential interference cell in the target transmission resource pool is the duplex mode information of the potential interference cell in the target transmission resource pool, the potential in the target transmission resource pool. At least one of the multiple access technical information of the target transmission cell, the physical layer parameter of the potential interference cell in the target transmission resource pool, and the resource allocation information of the potential interference cell in the target transmission resource pool. Including.

According to the fourth aspect, there is provided an apparatus for eliminating cell-to-cell interference for carrying out the method in any of the first aspect or the feasible aspect described above. Specifically, the device may include a unit for performing the method in any of the above first aspects, or any feasible aspect of the first aspect.

According to the fifth aspect, there is provided an apparatus for eliminating cell-to-cell interference for carrying out the method in any of the above-mentioned second aspect or the feasible aspect of the second aspect. Specifically, the device may include a unit for performing the method in any of the above second aspects, or any feasible aspect of the second aspect.

According to the sixth aspect, there is provided an apparatus for eliminating cell-to-cell interference for carrying out the method in any of the third aspect or the feasible aspect described above. Specifically, the device may include a unit for performing the method in any of the third aspects described above, or any feasible aspect of the third aspect.

According to a seventh aspect, a device for eliminating cell-cell interference is provided, the device including a storage unit and a processor. The storage unit stores instructions, and the processor executes the instructions stored in the storage device. Further, when the instruction stored in the storage device is executed by the processor, the execution causes the processor to execute the method in either the first aspect or the feasible aspect of the first aspect. To do so.

According to an eighth aspect, a device for eliminating cell-cell interference is provided, the device including a storage unit and a processor. The storage unit stores instructions, and the processor executes the instructions stored in the storage device. Further, when the instruction stored in the storage device is executed by the processor, the execution causes the processor to execute the method in the second aspect or the feasible aspect of the second aspect. To do so.

According to a ninth aspect, a device for eliminating cell-cell interference is provided, the device including a storage unit and a processor. The storage unit stores instructions, and the processor executes the instructions stored in the storage device. Further, when the instruction stored in the storage device is executed by the processor, the execution causes the processor to execute the method in the third aspect or any of the feasible aspects of the third aspect. To do so.

According to a tenth aspect, a computer-readable medium for storing a computer program is provided, and the computer program is a method in either the first aspect or a feasible aspect of the first aspect. Contains instructions to execute.

According to the eleventh aspect, a computer-readable medium for storing a computer program is provided, and the computer program is a method in a second aspect or a feasible aspect of the second aspect. Contains instructions to execute.

According to a twelfth aspect, a computer-readable medium for storing a computer program is provided, and the computer program is a method in a third aspect or a feasible aspect of the third aspect. Contains instructions to execute.

According to the thirteenth aspect, the wireless communication system is provided, and the system is the device in the possible realization method of the fourth aspect or the fourth aspect, the fifth aspect, or the fifth aspect. The device in any of the feasible methods and the device in the sixth aspect or any feasible method of the sixth aspect may be included. Alternatively, the wireless communication system is an apparatus in any of the seventh or seventh aspects of the feasible realization method, an eighth aspect, or an eighth aspect of the feasible method. , And the device in any of the ninth aspects, or any feasible method of the ninth aspect, may be included.

It is an exemplary architecture of a wireless communication system applied in an embodiment of the present invention. It is an exemplary flowchart of a method for eliminating cell-to-cell interference provided by the embodiments of the present invention. It is an exemplary block diagram of the apparatus for eliminating cell-to-cell interference provided by the embodiments of the present invention. FIG. 6 is an exemplary block diagram of an apparatus for eliminating cell-cell interference provided by another embodiment of the present invention. FIG. 6 is an exemplary block diagram of an apparatus for eliminating cell-cell interference provided by another embodiment of the present invention. FIG. 6 is an exemplary block diagram of an apparatus for eliminating cell-cell interference provided by another embodiment of the present invention. FIG. 6 is an exemplary block diagram of an apparatus for eliminating cell-cell interference provided by another embodiment of the present invention. FIG. 6 is an exemplary block diagram of an apparatus for eliminating cell-cell interference provided by another embodiment of the present invention. It is an exemplary block diagram of the system for eliminating cell-to-cell interference provided by the embodiments of the present invention.

Hereinafter, in order to more clearly explain the configuration of the examples of the present invention, the drawings required in the description of the examples or the prior art will be briefly described, and the drawings described below are merely books. It is clear to those skilled in the art that other drawings can be obtained based on these drawings, provided that they are only a few examples of the invention and that no creative effort is made.

Hereinafter, the technical proposals of the examples of the present invention will be clearly and fully described by combining the drawings of the examples of the present invention. Of course, the examples described are only some of the examples of the present invention, not all of them. All other examples obtained by one of ordinary skill in the art based on the examples of the present invention without any creative effort fall within the scope of the present invention.

The terms "system" and "network" of the present application can be used interchangeably in the present application. The term "and / or" in the present application merely describes the correspondence between related objects, and three relationships can be expressed. For example, A and / or B can represent a case where only A is present, a case where both A and B are present, and a case where only B is present. Furthermore, the letter "/" in the present application generally represents the relationship of "or" between contextually related objects.

FIG. 1 is a schematic diagram of an architecture of a wireless communication system 100 that can be applied in an embodiment of the present invention. The wireless communication system 100 includes a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access (WCDMA) system. , General-purpose packet radio service (GPRS: General Packet Radio Service) system, Long-term evolution (LTE: Long Term Evolution) system, LTE frequency division multiple access (FDD: Frequency Division Duplex) system, LTE time division multiple access (TD) Division Duplex) system, Universal Mobile Communication System (UMTS), Global Interconnect Microwave Access (WiMAX: Worldwide Interoperability for Mobility for Communication System, etc.) Future Communication System, etc.

As shown in FIG. 1, the wireless communication system 100 includes a plurality of transmission / reception nodes (TRP: Transition and Reception Point) 110 and a plurality of terminal equipment 120, and for the sake of brevity, only two transmission / reception nodes are used here. However, the embodiment of the present invention is not limited to the number of transmitting and receiving nodes. Each transmit / receive node can provide communication coverage for a particular geographic area, and the transmit / receive node coverage area can be divided into multiple smaller areas, each smaller area. You may call it a cell. FIG. 1 illustrates a case where the coverage area of the transmission / reception node 110 is divided into three cells 104a, 104b and 104c. However, in the embodiment of the present invention, one transmission / reception node is one. Alternatively, a plurality of cells can be supported, and the embodiment of the present invention is not limited thereto.

FIG. 1 further shows a plurality of terminal equipment 120s located within the coverage range of the transmitting / receiving node. For the sake of brevity, one terminal facility in each cell is exemplified here, but the embodiment of the present invention is not limited to the number of terminal devices in the cell.

In the embodiment of the present invention, the transmitting / receiving node may be connected to the terminal equipment located within the coverage range by wireless connection, wired connection, or other methods, and simultaneous transmission of a plurality of cellular carriers. Can be supported. In the optional example, the transmission / reception node and the terminal equipment may communicate via an air interface (for example, Uu interface), and the communication link from the transmission / reception node to the terminal equipment is called a downlink (DL: Downlink). However, the communication link from the terminal equipment to the transmission / reception node may be called an uplink (UL). Communication between different transmission / reception nodes may be performed via a network interface (for example, an X2 interface).

As an option, the embodiments of the present invention specifically employ a homogeneous case, a heterogeneous case of non-ideal connection, or a heterogeneous connection between different transmit and receive nodes. The case may be a Genius case, and the examples of the present invention are not limited thereto.

In the embodiment of the present invention, the terminal equipment includes an access terminal, a user equipment (UE, User Equipment), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a radio. It can refer to a communication device, a user agent or a user device. Terminal equipment includes cellular telephones, wireless telephones, session establishment protocol (SIP) telephones, wireless local loop (WLL) stations, personal digital processing (PDAs), and wireless communication functions. It may be a portable device, a computing device or other device connected to a wireless modulation demodulator, an in-vehicle device, a wearable device, and a terminal facility in a future 5G network, or a terminal facility in a future evolution PLMN network.

In the embodiment of the present invention, the transmission / reception node may be equipment for communicating with the terminal equipment, and the transmission / reception node may be a GSM system or a CDMA base station (BTS: Base Transfer Station). It may be a base station (NB: NodeB) in a WCDMA system, an evolutionary base station (eNB: Evolutionary Node B or eNodeB) in an LTE system, or a cloud radio access network (CRAN: Cloud Radio Access). It may be a wireless controller in Network). Alternatively, the node may be a relay station, an access point, an in-vehicle device, a wearable device, an access network device in a future 5G network, a node in a future evolution PLMN network, or the like.

The wireless communication system 100 may further include other network equipment, which is not shown in FIG. 1 for the sake of brevity, but the embodiments of the present invention are not limited thereto.

In the wireless communication system 100, the transmission / reception node may adopt a different transmission technology (Transmission System) in the managed cell, for example, a different duplex mode (Duplex Mode), a multiple access connection technology (Multiple Access System), or the like. May be adopted. Further, different physical layer parameters (PHY Parameter) may be adopted, and for example, different subcarrier spacing, chip rate, frame structure, and the like may be adopted. Note that the transmit and receive nodes may use different transmission techniques and physical layer parameters for different time-frequency resources within a cell, and the embodiments of the present invention are not limited thereto.

FIG. 2 shows a method 200 for eliminating cell-cell interference provided by the embodiments of the present invention. The method 200 may be applied to various wireless communication systems, for example, the wireless communication system 100 shown in FIG. 1, and the embodiments of the present invention are not limited thereto.

In S210, the second transmission / reception node transmits the interference information of the first cell to the first transmission / reception node, where the first cell belongs to the second transmission / reception node.

The first cell may be a potential interference cell of the first terminal equipment, where the current service cell of the first terminal equipment may belong to the first transmit and receive node. .. The potential interference cell of the first terminal equipment may be a cell adjacent to the current service cell of the first terminal equipment. The potential interference cell may be a cell that is currently causing interference with the first terminal equipment, or is a cell that may cause interference with the first terminal equipment. There may be, and examples of the present invention are not limited thereto.

The first cell belongs to the second transmit / receive node, and the first cell may specifically indicate one or more cells. If the first cell specifically indicates a plurality of cells, the interference information of the first cell may include the interference information of each cell in the plurality of cells, and the embodiment of the present invention may be used. Is not limited to this.

In the embodiment of the present invention, one or more transmission resource pools may be set for the first cell. Each transmission resource pool may correspond to one transmission resource set consisting of transmission resources available to the first cell, where the available transmission resources are available time-frequency resources, code domain resources. , And / or may include space domain resources and the like, and examples of the present invention are not limited thereto.

As an option, the interference information of the first cell includes the duplex mode information of the first cell, the multiple access technical information of the first cell, and each first in at least one first transmission resource pool. At least in the physical layer parameters of the first cell in the transmission resource pool and the resource allocation information of the first cell in each second transmission resource pool in at least one second transmission resource pool. May include one.

Optionally, any first transmission resource pool in the at least one first transmission resource pool is different from any second transmission resource pool in the at least one second transmission resource pool. That is, it does not have to be common between the at least one first transmission resource and the at least one second transmission resource pool. Alternatively, a part of the first transmission resource pool in the at least one first transmission resource pool is the same as a part of the second transmission resource in the at least one second transmission resource pool. The remaining part of the first transmission resource pool may be different from the remaining part of the second transmission resource pool, that is, the at least one first transmission resource pool and at least the said one. It may be partially shared with one second transmission resource pool. Alternatively, the at least one first transmission resource pool may be one-to-one the same as the at least one second transmission resource pool, that is, the at least one first transmission resource pool. , The at least one second transmission resource pool may be completely overlapped, for example, the at least one first transmission resource pool and the at least one second transmission resource pool are both. The entire transmission resource pool allocated to the first cell may be used, and the embodiments of the present invention are not limited thereto.

Specifically, the duplex mode information of the first cell may be used to indicate the duplex mode adopted by the first cell. Optionally, the duplex mode is either Frequency Division Duplex, Time Division Duplex, Equipment to Device (D2D), or Full Duplex. Alternatively, the embodiments of the present invention are not limited thereto.

Optionally, the first cell may employ the same duplex mode in all transmission resource pools of the first cell, in which case the duplex mode information of the first cell will be: Specifically, it may be used to indicate the only duplex mode adopted by the first cell in all transmission resource pools. That is, the number of duplex modes indicated by the duplex mode information is one, and the duplex mode may be applied to all transmission resource sets of the first cell. Optionally, the first cell may employ different duplex modes in different transmission resource pools, where the duplex mode information in the first cell is specifically at least one third. It may be used to indicate the duplex mode adopted by the first cell in each third transmission resource pool in the transmission resource pool of. Here, the at least one third transmission resource pool may be a part or all of the transmission resource pools in all the transmission resource pools of the first cell. That is, the duplex mode information of the first cell specifically indicates at least one duplex mode having a one-to-one correspondence with at least one third transmission resource pool of the first cell. It may be used, and each duplex mode may be applied only to the third transmission resource pool corresponding to itself, and the embodiments of the present invention are not limited thereto.

As another optional embodiment, the interference information in the first cell further does not explicitly include the duplex mode information in the first cell and is otherwise adopted by the first cell. Duplex mode can be indicated implicitly. For example, the first cell (or the first cell in the transmission resource pool) is adopted by the physical layer parameter of the first cell (or the transmission resource pool in which the first cell is located). Duplex mode can be indicated implicitly. In the optional example, if the physical layer parameter of the first cell includes the uplink and downlink subframes or symbol ratios of the first cell (or the transmission resource pool with the first cell). In this case, it can be indicated that the duplex mode adopted by the first cell (or the first cell in the transmission resource pool) is TDD. If the physical layer parameter of the first cell does not include the upsubframe and symbol ratio of the first cell (or the transmission resource pool in which the first cell is located), the first cell (or the first cell). , It can be shown that the duplex mode adopted by the first cell) in the transmission resource pool is FDD. However, the examples of the present invention are not limited to these.

The multiplex access technology information of the first cell may be used to indicate the multiplex access technology adopted by the first cell. As an option, the multiple access technology may be specifically included in Orthogonal Frequency Division Multiple Access (OFDA), filtered OFDMA (Filtered-OFDMA), CDMA, or non-orthogonal multiple access technology. However, the embodiment of the present invention is not limited thereto.

Optionally, the first cell may employ the same multiplex access technology in all transmission resource pools of the first cell, in which case the multiple access technology information of the first cell is specific. In particular, the only multiplex access technique adopted by the first cell in all transmission resource pools may be shown. That is, the number of multiple access technologies indicated by the multiple access technology information of the first cell is one, and the multiple access technology may be applied to all transmission resource pools of the first cell. .. Optionally, the first cell may employ different multiplex access technologies in different transmission resource pools, in which case the multiplex access technology information in the first cell is specifically at least one first cell. It may be used to indicate the multiplex access technique adopted by the first cell in each of the fourth transmission resource pools of the four transmission resource pools. Here, the at least one fourth transmission resource pool may be a part or all of the transmission resource pools in all the transmission resource pools of the first cell. That is, the multiple access technology information of the first cell specifically indicates at least one multiple access technology having a one-to-one correspondence with at least one fourth transmission resource pool of the first cell. It may be used and each multiplex access technique may be applied only to a fourth transmission resource pool corresponding to itself, the embodiments of the present invention are not limited thereto.

As another optional embodiment, the interference information of the first cell further does not explicitly include the multiplex access technical information of the first cell and is otherwise adopted by the first cell. Multiple access techniques may be implied. For example, the multiplexing adopted by the first cell (or the first cell in the transmission resource pool) by the physical layer parameter of the first cell (or the transmission resource pool in which the first cell is located). Access technology may be implied. In the optional example, if the physical layer parameter of the first cell includes the subcarrier spacing of the first cell (or the transmission resource pool of the first cell), the first cell (or the transmission resource pool of the first cell). Alternatively, it can be shown that the multiplex access technology adopted by the first cell) in the transmission resource pool is OFDMA. Alternatively, if the physical layer parameter of the first cell includes the chip rate of the first cell (or the transmission resource pool in which the first cell is located), the first cell (or the transmission resource). The multiple access technology employed by the first cell) in the pool can exhibit CDMA, but the embodiments of the present invention are not limited thereto.

In the examples of the present invention, the terms "first", "second", "third" and "fourth" are merely for distinguishing different contents, and are used in the examples of the present invention. It should be understood that there are no restrictions on it. Specifically, the "first," "second," "third," and "fourth" were used to limit the "transmission resource pool," but this is simply a transmission resource pool that can be different. This is for the sake of convenience, and does not necessarily indicate different transmission resource pools. Optionally, in the at least one first transmission resource pool, the at least one second transmission resource pool, the at least one third transmission resource pool, and the at least one fourth transmission resource pool. There may be no intersections, some intersections, or complete overlaps between any two different sets of the above. Not limited.

The physical layer parameter of the first cell may specifically indicate the transmission parameter adopted by the first cell when a particular duplex mode and / or a particular multiplex access technique is adopted. Good. Optionally, the physical layer parameter may include a basic transmission parameter, which can depend on the multiplex access technique employed by the first cell. For example, if the multiplex access technology adopted by the first cell is OFDMA, the basic transmission parameter may include subcarrier spacing, or if the multiplex access technology is CDMA, the basic transmission parameter may be: Chip rates may be included, or if the multiple access technology is Filtered-OFDMA, the basic transmission parameters may include filtered waveform parameters, and examples of the present invention are not limited thereto.

Optionally, the physical layer parameter may further include a frame structure parameter to indicate the frame structure configuration of the first cell. Optionally, the frame structure parameter may include a subframe or time slot length, in which case the second transmit / receive node may adopt different subframe or time slot lengths within different cells. However, the examples of the present invention are not limited to these. Optionally, the frame structure parameters may further include in-frame uplink and downlink configurations, specifically time domain resources, frequency domain resources, and codes occupied by in-frame uplinks and downlinks, respectively. It may indicate a transmission resource such as a domain resource. As an option, the frame structure parameter may further include a configuration of a common reference signal (CRS) within the frame, and may specifically indicate a transmission resource occupied by the reference signal. Optionally, the frame structure parameter may further include a common channel configuration within the frame and / or a control channel configuration, wherein the control channel configuration is a common control channel configuration and / or dedicated control. It may include a channel configuration. Specifically, the common channel configuration within the frame indicates at least one of the time domain resource, frequency domain resource, code domain resource, and space domain resource occupied by the control channel in the radio frame. The control channel configuration within the frame may also indicate at least one of the time domain resource, frequency domain resource, code domain resource, and space domain resource occupied by the control channel within the radio frame. Well, the examples of the present invention are not limited to these.

Optionally, the physical layer parameter may further include a subframe structure parameter to indicate the subframe structure configuration of the first cell. Optionally, the subframe structural parameters may include uplink and downlink transmission resource configurations within the subframe, common channel configurations within the subframe, and control channel configurations within the subframe, eg, subframes. At least one of a common channel within a frame and / or a time domain resource, a frequency domain resource, a code domain resource, and a space domain resource occupied by a control channel may be indicated. Examples are not limited to this.

Optionally, the first cell may employ the same physical layer parameters in all transmission resource pools of the first cell, in which case the interference information of the first cell will be , The physical layer parameters adopted by the first cell in all transmission resource pools may be included. That is, the interference information may include only one physical layer parameter set. Alternatively, the first cell may employ different physical layer parameters in different transmission resource pools, where the interference information in the first cell is specifically at least one first transmission resource. Each first transmission resource pool in the pool may include physical layer parameters adopted by the first cell, and the types of physical layer parameters corresponding to different first transmission resource pools are the same. Or may be different. That is, the interference information of the first cell may include at least one physical layer parameter set having a one-to-one correspondence with at least one first transmission resource pool of the first cell, but of the present invention. Examples are not limited to this.

Optionally, in the embodiments of the present invention, the interference information of the first cell is further derived from each second transmission resource pool in one or more second transmission resource pools of the first cell. It may include resource allocation information. Here, the resource allocation information of the transmission resource pool may indicate the allocation status of the first cell for the transmission resource in the transmission resource pool. For example, specifically, the first cell is the first cell. The transmission resource in the transmission resource pool allocated to each second terminal equipment in at least one second terminal equipment that receives the service of the cell may be indicated. Here, the data transmission between the first cell and the second terminal equipment currently causes interference with the data transmission between the first transmission / reception node and the first terminal equipment. Or it can cause interference. As an option, the resource allocation information of the transmission resource pool includes the configuration information of the terminal identification reference signal (UE-Special Reference Signal) of each second terminal facility in the transmission resource pool, and each second in the transmission resource pool. It may include at least one of the configuration information of the terminal specific control channel (UE-Specific Reference Signal) of the terminal equipment and the information of the transmission resource occupied by each second terminal equipment in the transmission resource pool. .. Optionally, the resource allocation information of the transmission resource pool may further include other information, but the embodiments of the present invention are not limited thereto.

The configuration information of the terminal identification reference signal of the second terminal equipment in the transmission resource pool may indicate the transmission resource occupied by the terminal identification reference signal of the second terminal equipment in the transmission resource pool. The configuration information of the terminal specific control channel of the second terminal equipment in the transmission resource pool may indicate the transmission resource occupied by the terminal specific control channel of the second terminal equipment in the transmission resource pool. As an option, the resource allocation information of the transmission resource pool may further include the transmission parameters of the second terminal equipment in the transmission resource pool, where the transmission parameters are multiple inputs and multiple outputs (MIMO). Multiple Output) parameters, modulation coding formats, spread codes, and one or more of scrambling codes may be included, but embodiments of the invention are not limited thereto.

In the prior art, if cell 1 belonging to TRP1 provides service to terminal equipment 1 and cell 1 belonging to TRP1 allocates to terminal equipment 1 within the time-frequency resource range. , When the cell 2 belonging to TRP2 allocates transmission resources to the terminal equipment 2 and the terminal equipment 3, the signals transmitted by the TRP 2 to the terminal equipment 2 or the terminal equipment 3 are all transmitted by the TRP 1 to the terminal equipment 1. The signals transmitted by the TRP 2 to the terminal equipment 2 and the terminal equipment 3 are encoded separately, and the decoding and interference reconstruction are performed accordingly. Therefore, the terminal equipment 1 needs to be aware of how many signals from the terminal equipment the interference received by itself is included, and further, it is occupied by how many terminal equipments. It is necessary to be aware of the time-frequency resource boundary, but this is very difficult to achieve. In this way, the resources occupied by the coding code of the terminal equipment in the interference cell and the resources occupied by the coding code of the terminal equipment in the service cell cannot completely overlap and are covered. Interference terminal equipment will not be able to remove interference. In the embodiment of the present invention, the interfering cell transmits the information of the time-frequency resource allocated to the related terminal equipment to the service cell of the interfering terminal equipment, and then receives the information by the service cell. Send to the interfering terminal equipment. In this way, the interfered terminal equipment can perform decoding and reconstruction interference on the received signal based on the information, and can further realize interference elimination. For example, in the above example, the time-frequency resource range of the terminal equipment 2 and the terminal equipment 3 exceeds the time-frequency resource range of the terminal equipment 1, but the terminal equipment 1 has an interference signal of the terminal equipment 2 and the terminal equipment 3. After reconstructing the above, interference elimination can be realized by subtracting only the portion where the interference signal and its own time-frequency resource overlap. For example, the frequency domain range of the signal that the terminal equipment 1 needs to receive is 3 to 5 MHz, the signal transmitted by the interfering cell to the terminal equipment 2 covers 2 to 4 MHz, and the interfering cell covers the terminal equipment 3. Assuming that the signal transmitted to the terminal covers 4 to 6 MHz, the frequency domain range of the interference that the terminal equipment 1 tries to subtract is 3 to 5 MHz, but the interference of this portion is the signal transmitted to the two terminal equipments. Since it is composed of, it is necessary to reconstruct it separately. Specifically, the terminal equipment 1 reconstructs the interference in the frequency domain range of 2 to 4 MHz, subtracts the portion of 3 to 4 MHz here, and further reconfigures the interference in the frequency domain range of 4 to 6 MHz. After the configuration, the portion of 4 to 5 MHz here can be subtracted, but the embodiment of the present invention is not limited to these.

Optionally, the interference information of the first cell may further include the cell identifier of the first cell, or may further include other information, although the embodiments of the present invention are here. Not limited to.

As another optional embodiment, the second transmit / receive node further provides interference information for each target cell in at least one target cell of the first transmit / receive node. A request instruction (Indication) for requesting transmission to the second transmission / reception node may be transmitted to the first transmission / reception node. Optionally, the request instruction includes the cell identifier of the target cell, the target transmission resource pool of the target cell, and / or the information of the target time-frequency resource, so that the first transmission / reception node can perform the target transmission resource. You may request to transmit interference information for the target cell in the pool and / or the target time-frequency resource. Optionally, the request instruction may further include at least one of a transmission technical instruction, a physical layer parameter instruction, and a resource allocation instruction. Here, the transmission technology instruction may request that the first transmission / reception node transmit the target cell transmission technology information, and the first transmission / reception node responds to the target according to the transmission technology instruction. Information on the transmission technology adopted by the target cell in the transmission resource pool and / or the target time-frequency resource may be transmitted to the second transmission / reception node. The physical layer parameter instruction may require the first transmit / receive node to transmit the physical layer parameter of the target cell, and the first transmit / receive node responds to the target according to the physical layer parameter instruction. The physical layer parameters adopted by the target cell in the transmission resource pool and / or the target time-frequency resource may be transmitted to the second transmission / reception node. The resource allocation instruction may request that the first send / receive node transmit the resource allocation information of the target cell, and the first send / receive node responds to the target transmission resource in accordance with the resource allocation instruction. The resource allocation information of the target cell in the pool and / or the target time-frequency resource may be transmitted to the second transmission / reception node. Optionally, the request instructions may further include other information, and examples of the present invention are not limited thereto.

As an option, the second transmitting / receiving node may add the interference information of the first cell and the request instruction in the same message or different messages, and the embodiment of the present invention is limited thereto. do not.

In the embodiment of the present invention, the second transmission / reception node transmits the interference information of the first cell to the first transmission / reception node via the network interface between the second transmission / reception node and the first transmission / reception node. It may be transmitted to the transmission / reception node of. As an example of one option, the interference information transmitted over the network interface may have the formats shown in Table 1.

Table 1: Examples of interference information formats transmitted via network interfaces

Table 1 merely illustrates the format of the interference information, but optionally, the interference information may include at least a portion shown in Table 1, whereas the embodiments of the present invention are opposed to this. It should be understood that there is no limitation.

In S220, the first transmission / reception node receives the interference information of the first cell transmitted by the second transmission / reception node, and also transmits the interference information of the first cell to the first terminal equipment. You may.

Optionally, the first transmit / receive node may further receive the interference information of the second cell transmitted by the third transmit / receive node, where the second cell is the third transmit / receive node. The second cell may be a potential interference cell of the first terminal equipment. In this case, the first transmitting / receiving node may transmit the interference information of each potential interference cell in at least one potential interference cell of the first terminal equipment to the first terminal equipment. Here, the at least one potential interference cell may include the first cell and the second cell.

In S220, the first transmission / reception node is of each potential interference cell in the at least one potential interference cell via the air interface between the first transmission / reception node and the first terminal equipment. The interference information may be transmitted to the first terminal equipment. As an example of one option, the interference information transmitted via the air interface may have the formats shown in Table 2.

Table 2: Examples of interference information formats transmitted via the air interface

Table 2 merely illustrates the format of the interference information, but optionally, the interference information may include at least a portion shown in Table 2, whereas the embodiments of the present invention are opposed to this. It should be understood that there is no limitation.

In S230, the first terminal equipment receives the interference information of each potential interference cell in at least one potential interference cell transmitted by the first transmission / reception node, and also receives the interference information of the at least one potential interference. Based on the interference information of each potential interference cell in the cell, interference removal is performed on the signal received from the first transmission / reception node.

In the embodiment of the present invention, as an option, the second transmission / reception node may voluntarily transmit the interference information of the first cell to the first transmission / reception node. Alternatively, before S210, the first transmission / reception node sends a request instruction to the second transmission / reception node for requesting the second transmission / reception node to transmit the interference information of the first cell. You may send it. In this case, in S210, the second transmission / reception node may specifically transmit the interference information of the first cell to the first transmission / reception node according to the received request instruction. As an option, the request instruction is added with the information of at least one target transmission resource pool in the first cell, so that the second transmission / reception node is the first in the target transmission resource pool at least one. You may request that the cell interference information be transmitted to the first transmit / receive node. Correspondingly, the interference information of the first cell transmitted by the second transmission / reception node is specifically the first cell in each target transmission resource pool in the at least one target transmission resource pool. The interference information of the present invention may be used, and the examples of the present invention are not limited thereto. The specific implementation method of the request instruction transmitted by the first transmission / reception node to the second transmission / reception node may be referred to the related description above, and is not described further here for the sake of brevity. Should be understood.

As an example of one option, the interference information of the first cell in the target transmission resource pool is the information of the duplex mode adopted by the first cell in the target transmission resource pool, and the information in the target transmission resource pool. Among the information on the multiple access technology adopted by the first cell, the physical layer parameters of the first cell in the target transmission resource pool, and the resource allocation information of the first cell in the target transmission resource pool, At least one may be included. In this case, the at least one first transmission resource pool, the at least one second transmission resource pool, the at least one third transmission resource pool, and the at least one fourth transmission resource pool are all included. Specifically, it may be the at least one target transmission resource pool, and the embodiments of the present invention are not limited thereto.

In this way, the transmitting side requests the receiving side to feed back the interference information (for example, transmission technology and / or physical layer parameter) of the receiving side in the target transmission resource range by using the request instruction. Therefore, the receiving side can feed back only the interference information of the receiving side within the target transmission resource range to the transmitting side, and it is not necessary to feed back the interference information of the receiving side in the entire transmission resource range. , The signaling overhead can be reduced. Note that inter-cell interference is eliminated by the receiving side executing resource scheduling based on the target transmission resource range specified in the request instruction and matching the resource allocation of the receiving side with the resource allocation of the transmitting side as much as possible. The complexity of the algorithm can be reduced.

Therefore, according to the method for eliminating cell-to-cell interference according to the embodiment of the present invention, the second transmission / reception node transmits the interference information of the potential interference cell to the first transmission / reception node, and the first transmission / reception node causes the first transmission / reception node. The interference information of each potential interference cell in at least one potential interference cell received is transmitted to the first terminal equipment, and is based on the interference information of at least one potential interference cell received by the first terminal equipment. By removing the interference, it is possible to eliminate the interference between cells and improve the system performance.

The interference information includes duplex mode information, multiplex access technical information, physical layer parameters of each transmission resource pool in at least one transmission resource pool, and each transmission resource pool in at least one transmission resource pool. By including at least one of the resource allocation information of, it can be applied to the elimination of interference between two cells adopting different transmission techniques and physical layer parameters.

In each embodiment of the present invention, the number of each process described above does not mean the order before and after the execution, and the order of execution of each process should be determined by its function and its own logic. It should be understood that it does not limit the process of implementation of.

The method for eliminating cell-cell interference according to the embodiment of the present invention has been described in detail above while being coupled to FIG. The apparatus and system for eliminating cell-cell interference according to the embodiment of the present invention will be described in detail below, while being coupled with FIGS. 3 to 9.

FIG. 3 is an exemplary block diagram of the device 300 for eliminating cell-cell interference provided by the embodiments of the present invention. The device 300 for removing the inter-cell interference is
An acquisition unit 310 configured to acquire interference information of potential interference cells,
The acquisition unit 310 includes a transmission unit 320 configured to transmit the interference information of the potential interference cell acquired by the acquisition unit 310 to the first terminal equipment.
Here, the potential interference cell belongs to the second transmission / reception node, and the interference information of the potential interference cell includes the duplex mode information of the potential interference cell, the multiplex access technical information of the potential interference cell, and the like. The physical layer parameters of the potential interference cell in each first transmission resource pool in at least one first transmission resource pool, and each second transmission resource in at least one second transmission resource pool. Includes at least one of the resource allocation information for the potential interfering cell in the pool.

Optionally, the duplex mode information of the potential interfering cell includes information on the duplex mode adopted by the potential interfering cell in each third transmission resource pool in at least one third transmission resource pool. ..

Optionally, the multiple access technology information of the potential interfering cell includes information on the multiple access technology adopted by the potential interfering cell in each fourth transmission resource pool in at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the potential interference cell in the second transmission resource pool is stored in at least one second terminal facility in the second transmission resource pool that receives the service of the potential interference cell. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the potential interference cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the second terminal equipment.

As an option, the acquisition unit 310 includes a receive subunit configured to receive interference information of the potential interference cell transmitted by a second transmit / receive node to which the potential interference cell belongs.

As an option, the transmitting unit 320 further receives the second transmitting and receiving node to which the potential interfering cell belongs before the receiving subunit receives the interfering information of the potential interfering cell transmitted by the second transmitting and receiving node. A request instruction for requesting the transmit / receive node to transmit interference information of the potential interfering cell in the at least one target transmission resource pool is configured to transmit to the second transmit / receive node.
Correspondingly, the receiving subsystem specifically sends each target in the at least one target transmission resource pool transmitted in accordance with the request instructions transmitted by the transmitting unit 320 by the second transmitting and receiving node. It is configured to receive the interference information of the potential interference cell in the transmission resource pool, where the interference information of the potential interference cell in the target transmission resource pool is the interference information of the potential interference cell in the target transmission resource pool. Duplex mode information, multiple access technical information of the potential interference cell in the target transmission resource pool, physical layer parameters of the potential interference cell in the target transmission resource pool, and the potential in the target transmission resource pool. Includes at least one of the resource allocation information of the interfering cell.

It should be understood that the device 300 here is embodied in the form of a functional unit. In an optional example, one of ordinary skill in the art will appreciate that the device 300 is specifically the first transmit / receive node in the above embodiment and corresponds to the first transmit / receive node in the above embodiment. It should be understood that the flow and / or steps can be performed and no further discussion is given here to avoid duplication.

FIG. 4 is an exemplary block diagram of a device 400 for eliminating cell-cell interference provided by another embodiment of the present invention. The device 400 for removing the inter-cell interference is
A receiving unit 410 configured to receive the interference information of the potential interference cell transmitted by the first transmitting / receiving node, and
The receiving unit 410 includes a processing unit 420 configured to perform interference removal on a signal received from the first transmitting / receiving node based on the interference information of the potential interference cell received.
Here, the interference information of the potential interference cell includes the duplex mode information of the potential interference cell, the multiple access technical information of the potential interference cell, and each first in at least one first transmission resource pool. In the physical layer parameters of the potential interference cell in the transmission resource pool of, and in the resource allocation information of the potential interference cell in each second transmission resource pool in at least one second transmission resource pool, Includes at least one.

Optionally, the duplex mode information of the potential interfering cell includes information on the duplex mode adopted by the potential interfering cell in each third transmission resource pool in at least one third transmission resource pool. ..

Optionally, the multiple access technology information of the potential interfering cell includes information on the multiple access technology adopted by the potential interfering cell in each fourth transmission resource pool in at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the potential interference cell in the second transmission resource pool is stored in at least one second terminal facility in the second transmission resource pool that receives the service of the potential interference cell. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the potential interference cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the second terminal equipment.

It should be understood that the device 400 here is embodied in the form of a functional unit. In an optional example, one of ordinary skill in the art will appreciate that the device 400 is specifically the first terminal equipment in the above embodiment and corresponds to the first terminal equipment in the above method embodiment. It should be understood that the flow and / or steps can be performed and no further discussion is given here to avoid duplication.

FIG. 5 is a device 500 for eliminating cell-to-cell interference provided by another embodiment of the present invention. The device 500 for removing the inter-cell interference is
A processing unit 510 configured to determine the interference information of the first cell,
The processing unit 510 includes a transmission unit 520 configured to transmit the determined interference information of the first cell to the first transmission / reception node.
Here, the first cell belongs to the device, and the interference information of the first cell includes the duplex mode information of the first cell, the multiple access technical information of the first cell, and at least one of them. The physical layer parameters of the first cell in each first transmission resource pool in the first transmission resource pool, and the relevant in each second transmission resource pool in at least one second transmission resource pool. Includes at least one of the resource allocation information in the first cell.

Optionally, the duplex mode information in the first cell includes information on the duplex mode adopted by the first cell in each third transmission resource pool in at least one third transmission resource pool. ..

As an option, the multiple access technology information of the first cell includes information on the multiple access technology adopted by the first cell in each fourth transmission resource pool in the at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the first cell in the second transmission resource pool is in at least one second terminal facility that receives the service of the first cell in the second transmission resource pool. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the first cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the terminal equipment of.

As an option, the apparatus 500 transmits the interference information of the first cell to the first transmission / reception node before the transmission unit 520 transmits the interference information of the first transmission / reception node to the first transmission / reception node. Further includes a receive unit configured to receive a request instruction for the second transmit / receive node to request that the interference information of the first cell in the at least one target transmission resource pool be transmitted. ,
Correspondingly, the transmission unit 520 specifically, according to the request instruction received by the reception unit, the interference information of the first cell in each target transmission resource pool in the at least one target transmission resource pool. Is configured to be transmitted to the first transmission / reception node, where the interference information of the potential interference cell in the target transmission resource pool is the duplex mode of the potential interference cell in the target transmission resource pool. Information, multiplex access technical information of the potential interference cell in the target transmission resource pool, physical layer parameters of the potential interference cell in the target transmission resource pool, and resources of the potential interference cell in the target transmission resource pool. Includes at least one of the allocation information.

It should be understood that the device 500 here is embodied in the form of a functional unit. In an optional example, one of ordinary skill in the art will appreciate that the device 500 is specifically a second transmit / receive node in the above embodiment, each flow corresponding to the terminal equipment in the above embodiment, and / Alternatively, it should be understood that the steps can be performed and are not described further here to avoid duplication.

The term "unit" here refers to an application specific integrated circuit (ASIC), an electronic circuit, or a processor for executing one or more software or firmware programs (for example, a shared processor, a dedicated processor). Or processor sets, etc.) and storage devices, combination logic circuits and / or other suitable components that support the described functions should be understood.

FIG. 6 is an exemplary block diagram of the device 600 for eliminating cell-cell interference provided by the embodiments of the present invention. The device 600 for eliminating the cell-to-cell interference includes a processor 610 and a transmitter 620 coupled to the processor 610.

The processor 610 is configured to acquire the interference information of the potential interference cell, where the potential interference cell belongs to the second transmission / reception node, and the interference information of the potential interference cell is the potential interference cell. Duplex mode information of the interfering cell, multiple access technical information of the potential interfering cell, physical layer parameters of the potential interfering cell in each first transmission resource pool in at least one first transmission resource pool, and , Including at least one of the resource allocation information of the potential interfering cell in each second transmission resource pool in at least one second transmission resource pool.
The transmitter 620 is configured to transmit the interference information of the potential interference cell acquired by the processor 610 to the first terminal equipment.

Optionally, the duplex mode information of the potential interfering cell includes information on the duplex mode adopted by the potential interfering cell in each third transmission resource pool in at least one third transmission resource pool. ..

Optionally, the multiple access technology information of the potential interfering cell includes information on the multiple access technology adopted by the potential interfering cell in each fourth transmission resource pool in at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the potential interference cell in the second transmission resource pool is stored in at least one second terminal facility in the second transmission resource pool that receives the service of the potential interference cell. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the potential interference cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the second terminal equipment.

As an option, the device further includes a receiver for receiving interference information of the potential interfering cell transmitted by a second transmitting / receiving node to which the potential interfering cell belongs.

Optionally, the transmitter 620 is further provided by the second transmit / receive node before the receiver receives interference information of the potential interfering cell transmitted by the second transmit / receive node to which the potential interfering cell belongs. A request instruction for requesting transmission of interference information of the potential interfering cell in the at least one target transmission resource pool is configured to be transmitted to the second transmitting and receiving node.
Correspondingly, the receiver specifically sends each target transmission resource pool in the at least one target transmission resource pool transmitted in accordance with the request instruction transmitted by the transmitter 620 by the second transmit / receive node. The interference information of the potential interference cell in the target transmission resource pool is configured to receive the interference information of the potential interference cell in the target transmission resource pool. Mode information, multiplex access technical information of the potential interference cell in the target transmission resource pool, physical layer parameters of the potential interference cell in the target transmission resource pool, and of the potential interference cell in the target transmission resource pool. Includes at least one of the resource allocation information.

As an option, the device 600 may further include a storage device, wherein the storage device may include a read-only memory and a random access memory, and also provides instructions and data to the processor. Some of the storage devices may further include non-volatile random access memory. For example, the storage device may further store equipment type information. The processor can execute the instructions stored in the storage device, and when the instructions are executed by the processor, each step corresponding to the terminal equipment in the above method embodiment is executed by the processor. Can be done.

The device 600 is specifically the first transmit / receive node in the above embodiment, and can execute each flow and / or step corresponding to the first transmit / receive node in the above method embodiment. It should be understood that, for the sake of brevity, no further explanation is given here.

FIG. 7 is an exemplary block diagram of an apparatus 700 for eliminating cell-cell interference provided by another embodiment of the present invention. The device 700 for removing the inter-cell interference is
A receiver 710 configured to receive the interference information of the potential interference cell transmitted by the first transmit / receive node, and
It includes a processor 720 configured to perform interference removal on a signal received from the first transmit / receive node based on the interference information of the potential interference cell received by the receiver 710.
The interference information of the potential interference cell includes the duplex mode information of the potential interference cell, the multiple access technical information of the potential interference cell, and each first transmission resource in at least one first transmission resource pool. At least one of the physical layer parameters of the potential interference cell in the pool and the resource allocation information of the potential interference cell in each second transmission resource pool in at least one second transmission resource pool. including.

Optionally, the duplex mode information of the potential interfering cell includes information on the duplex mode adopted by the potential interfering cell in each third transmission resource pool in at least one third transmission resource pool. ..

Optionally, the multiple access technology information of the potential interfering cell includes information on the multiple access technology adopted by the potential interfering cell in each fourth transmission resource pool in at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the potential interference cell in the second transmission resource pool is stored in at least one second terminal facility in the second transmission resource pool that receives the service of the potential interference cell. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the potential interference cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the second terminal equipment.

Optionally, the device 700 may further include a storage device, wherein the storage device may include a read-only memory and a random access memory, and also provides instructions and data to the processor. Some of the storage devices may further include non-volatile random access memory. For example, the storage device may further store equipment type information. The processor can execute an instruction stored in the storage device, and when the instruction is executed by the processor, each step corresponding to the terminal equipment in the above method embodiment is executed by the processor. Can be done.

The apparatus 700 is specifically the first terminal equipment in the above embodiment, and can execute each flow and / or step corresponding to the first terminal equipment in the above method embodiment. It should be understood that, for the sake of brevity, no further explanation is given here.

FIG. 8 is a device 800 for eliminating cell-to-cell interference provided by another embodiment of the present invention. The device 800 for removing the inter-cell interference is
A processor 810 configured to determine the interference information in the first cell, and
The processor 810 includes a transmitter 820 configured to transmit the determined interference information of the first cell to the first transmitting / receiving node.
Here, the first cell belongs to the device, and the interference information of the first cell includes the duplex mode information of the first cell, the multiple access technical information of the first cell, and at least one of them. The physical layer parameters of the first cell in each first transmission resource pool in the first transmission resource pool, and the relevant in each second transmission resource pool in at least one second transmission resource pool. Includes at least one of the resource allocation information in the first cell.

Optionally, the duplex mode information in the first cell includes information on the duplex mode adopted by the first cell in each third transmission resource pool in at least one third transmission resource pool. ..

As an option, the multiple access technology information of the first cell includes information on the multiple access technology adopted by the first cell in each fourth transmission resource pool in the at least one fourth transmission resource pool. ..

Optionally, the physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.

Optionally, the frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and frame. Includes at least one of the control channel configurations within.

Optionally, the subframe structure parameter includes at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. ..

As an option, the resource allocation information of the first cell in the second transmission resource pool is in at least one second terminal facility that receives the service of the first cell in the second transmission resource pool. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in the second transmission resource pool, and the first cell are each second. Includes at least one of the transmission resource information in the second transmission resource pool assigned to the terminal equipment of.

As an option, the device 800 further includes a receiver, which is transmitted by the first transmit and receive node before the transmitter 820 transmits the interference information of the first cell to the first transmit and receive node. A request instruction is configured to receive a request instruction for requesting that the second transmit / receive node transmit interference information of the first cell in the at least one target transmission resource pool.
Accordingly, the transmitter 820 specifically, according to the request instruction received by the receiver, provides interference information of the first cell in each target transmission resource pool in the at least one target transmission resource pool. It is configured to transmit to the first transmit / receive node, where the interference information of the potential interference cell in the target transmission resource pool is the duplex mode information of the potential interference cell in the target transmission resource pool. Multiple access technical information of the potential interference cell in the target transmission resource pool, physical layer parameters of the potential interference cell in the target transmission resource pool, and resource allocation information of the potential interference cell in the target transmission resource pool. Including at least one of.

Optionally, the device 800 may further include a storage device, wherein the storage device may include a read-only memory and a random access memory, and also provides instructions and data to the processor. Some of the storage devices may further include non-volatile random access memory. For example, the storage device may further store equipment type information. The processor can execute an instruction stored in the storage device, and when the instruction is executed by the processor, each step corresponding to the terminal equipment in the above method embodiment is executed by the processor. Can be done.

The device 800 is specifically the second transmit / receive node in the above embodiment, and can execute each flow and / or step corresponding to the second transmit / receive node in the above method embodiment. It should be understood that, for the sake of brevity, no further explanation is given here.

In the embodiment of the present invention, the processor may be a central processing unit (CPU: Central Processing Unit), and the processor may be another general-purpose processor, a digital signal processor (DSP), or a dedicated integrated circuit (ASIC). ), Field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It should be understood that the general purpose processor may be a microprocessor, or the processor may be any regular processor or the like.

In the realization process, each step in the embodiment of the above method may be completed by a hardware integrated logic circuit in the processor or an instruction in the form of software. The steps of combining the methods disclosed in the examples of the present invention appear directly when performed in a hardware process or in a combination of hardware and software within a processor. Software modules may be located in mature storage media in the art such as random storage devices, flashes, read-only storage devices, programmable read-only memory or electrically erasable programmable memory, registers. The storage medium is located in memory, and the processor executes instructions in memory and combines with its hardware to complete the steps of the above method. Omitted here to avoid duplication.

FIG. 9 shows a system 900 for eliminating cell-to-cell interference provided by the embodiments of the present invention. The system architecture of the system 900 may refer to the wireless communication system 100 described above, and the examples of the present invention are not limited thereto.

Specifically, the system 900 may include a first transmission / reception node 910, a second transmission / reception node 920, and terminal equipment 930. Here, the first transmission / reception node 910 can currently provide a service to the terminal equipment 930. Further, the first cell of the second transmission / reception node 920 may be a potential interference cell of the terminal equipment 930, that is, the terminal equipment that receives the services of the first cell and the first cell. The data transmission between the first transmission / reception node 910 and the terminal equipment 930 is currently causing or may cause interference with the data transmission between the first transmission / reception node 910 and the terminal equipment 930.

The second transmission / reception node 920 can transmit the interference information of the first cell to the first transmission / reception node 910. The first transmission / reception node 910 can receive the interference information of the first cell transmitted by the second transmission / reception node, and can transmit the interference information of the first cell to the terminal equipment 930. The terminal equipment 930 can receive the interference information of the first cell transmitted by the first transmission / reception node 910, and interferes with the received signal based on the interference information of the first cell. Removal can be done.

As an example of one option, the first transmit / receive node 910 may specifically be the device 300, and the second transmit / receive node may specifically be the device 500. The terminal equipment 930 may be specifically the above-mentioned device 400.

As another optional embodiment, the first transmit / receive node 910 may specifically be the device 600, and the second transmit / receive node may specifically be the device 800. The terminal equipment 930 may be specifically the above-mentioned device 700.

It should be understood that the description of the examples in the present application can mainly emphasize the different parts between the examples and refer to their similar or similar parts.

It is said that the steps of each exemplary unit and algorithm described in the examples disclosed in the present application can be combined and realized using electronic hardware or a combination of computer software and electronic hardware. Any trader can understand. Whether these functions are implemented in the form of hardware or software depends on the specific application of the technical proposal and design constraints. One of ordinary skill in the art can realize the functions described using different methods for each particular application, but such realization should not be considered beyond the scope of the present invention.

One of ordinary skill in the art can refer to the corresponding flow of the above method embodiments for specific operations of the systems, devices and units described above for convenience and brevity of description. I won't say any more.

In some of the embodiments provided in the present application, the disclosed systems, devices and methods may be implemented in other ways. For example, the examples of the devices described above are merely exemplary, for example, the division of the units is merely a logical functional division, and in fact, other divisions when realized. It may be present, for example, a plurality of units or components may be integrated or assembled into another system, or some technical features may be omitted or not implemented. Also, the mutual coupling, or direct coupling, or communication connection of each component specified or discussed is connected by indirect coupling or communication of several interfaces, devices, or units. It may be of any form, electrical, mechanical, or other.

The units described above as separate components may or may not be physically separated. The component shown as a unit may or may not be a physical unit. It may be arranged in one place or distributed to a plurality of network units. Depending on the actual needs, some or all of the units here may be selected to achieve the purpose of the technical proposal of this embodiment.

Further, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be a single unit, and two or more units may be integrated into one unit. You may. The integrated unit may be realized by hardware or a software function unit.

The assembled units described above may be implemented in the form of software functional modules and may be stored on a computer-readable medium when sold or used as an independent product. Thereby, the technical proposal of the embodiment of the present invention can be embodied in the form of a software product as a part that contributes to the prior art in effect, and the computer software product is stored in a storage medium and is stored in a computer device (personal computer, personal computer,). It includes a plurality of instructions for causing a server, a network device, or the like) to execute all or part of the above methods of each embodiment of the present invention. The above storage medium stores various program codes such as a USB memory, a mobile storage medium, a read-only memory (ROM: Read-Only Memory), a random access storage device (RAM: Random Access Memory), a magnetic disk, or a compact disk. Includes capable media.

The above description is merely a specific embodiment of the present invention, and the present invention is not limited thereto, and modifications or modifications that can be easily conceived by those skilled in the art within the scope disclosed in the present invention. All replacements should be included within the scope of the present invention. Therefore, the scope of the present invention should conform to the stated claims.

Claims (18)

A method for eliminating cell-to-cell interference,
When the first transmitting / receiving node acquires the interference information of the potential interference cell,
The first transmitting / receiving node includes transmitting the interference information of the potential interference cell to the first terminal equipment.
Here, the potential interference cell belongs to the second transmission / reception node, the interference information of the potential interference cell includes the multiple access technical information of the potential interference cell, and the multiple access technical information of the potential interference cell. Includes information on the multiple access technology employed by the potential interfering cell in each fourth transmission resource pool in at least one fourth transmission resource pool, wherein the multiple access technology is orthogonal frequency split multiple access OFDMA. , One of the filtered OFDMA, CDMA, and non-orthogonal multiple access techniques. The interference information of the potential interference cell is further the duplex mode information of the potential interference cell, the physical layer of the potential interference cell in each first transmission resource pool in at least one first transmission resource pool. Claim 1 comprising a parameter and at least one of the resource allocation information of the potential interference cell in each second transmission resource pool in at least one second transmission resource pool. The method described in. The duplex mode information of the potential interference cell is characterized by including information on the duplex mode adopted by the potential interference cell in each third transmission resource pool in at least one third transmission resource pool. The method according to claim 2. The physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.
The frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and control within the frame. Includes at least one of the channel configurations
The subframe structure parameter is characterized by including at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. The method according to claim 2 or 3. The resource allocation information of the potential interference cell in each second transmission resource pool is in at least one second terminal facility that receives the service of the potential interference cell in each of the second transmission resource pools. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in each of the second transmission resource pools, and the configuration information of each of the second transmission resource pools. The invention according to any one of claims 2 to 4, wherein the potential interference cell includes at least one of the information of the transmission resource allocated to each second terminal equipment. Method. When the first transmitting / receiving node acquires the interference information of the potential interference cell,
Any of claims 1 to 5, wherein the first transmitting / receiving node includes receiving interference information of the potential interference cell transmitted by a second transmitting / receiving node to which the potential interference cell belongs. The method according to item 1. Before the first transmission / reception node receives the interference information of the potential interference cell transmitted by the second transmission / reception node to which the potential interference cell belongs,
The second transmission / reception gives a request instruction for the first transmission / reception node to request that the second transmission / reception node transmit interference information of the potential interference cell in the at least one target transmission resource pool. Including further sending to the node
When the first transmission / reception node receives the interference information of the potential interference cell transmitted by the second transmission / reception node to which the potential interference cell belongs,
The first transmit / receive node receives interference information of the potential interference cell in each target transmission resource pool in the at least one target transmission resource pool transmitted by the second transmit / receive node in accordance with the request instruction. Including that
Here, the interference information of the potential interference cell in the target transmission resource pool is the duplex mode information of the potential interference cell in the target transmission resource pool, and the multiple access of the potential interference cell in the target transmission resource pool. It is characterized by including at least one of technical information, physical layer parameters of the potential interference cell in the target transmission resource pool, and resource allocation information of the potential interference cell in the target transmission resource pool. The method according to claim 6. A method for eliminating cell-to-cell interference,
When the first terminal equipment receives the interference information of the potential interference cell transmitted by the first transmission / reception node,
The first terminal equipment includes performing interference removal on a signal received from the first transmission / reception node based on the interference information of the potential interference cell.
Here, the interference information of the potential interference cell includes the multiple access technology information of the potential interference cell, and the multiple access technology information of the potential interference cell is each in at least one fourth transmission resource pool. The multiple access technology includes information on the multiple access technology adopted by the potential interfering cell in the fourth transmission resource pool, and the multiple access technology includes orthogonal frequency division multiple access OFDMA, filtered OFDMA, CDMA, and non-orthogonal multiple access technology. One of the methods. The interference information of the potential interference cell is the duplex mode information of the potential interference cell, the physical layer parameter of the potential interference cell in each first transmission resource pool in at least one first transmission resource pool. , And, according to claim 8, at least one of the resource allocation information of the potential interference cell in each second transmission resource pool in at least one second transmission resource pool is included. The method described. The duplex mode information of the potential interference cell is characterized by including information on the duplex mode adopted by the potential interference cell in each third transmission resource pool in at least one third transmission resource pool. The method according to claim 9. The physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.
The frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and control within the frame. Includes at least one of the channel configurations
The subframe structure parameter is characterized by including at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. The method according to claim 9 or 10. The resource allocation information of the potential interference cell in each second transmission resource pool is in at least one second terminal facility that receives the service of the potential interference cell in each of the second transmission resource pools. The configuration information of the terminal identification reference signal of each second terminal equipment, the configuration information of the terminal identification control channel of each second terminal equipment in each of the second transmission resource pools, and the configuration information of each of the second transmission resource pools. The invention according to any one of claims 9 to 11, wherein the potential interference cell includes at least one of the information of the transmission resource allocated to each second terminal equipment. Method. A method for eliminating cell-to-cell interference,
The second transmitting / receiving node confirms the interference information of the first cell,
The second transmission / reception node includes transmitting the interference information of the first cell to the first transmission / reception node.
Here, the first cell belongs to the second transmission / reception node, the interference information of the first cell includes the multiple access technology information of the first cell, and the multiple access technology of the first cell. The information includes information on the multiple access technology adopted by the first cell in each fourth transmission resource pool in at least one fourth transmission resource pool, and the multiple access technology includes orthogonal frequency division multiple access. A method, which is one of OFDMA, filtered OFDMA, CDMA, and non-orthogonal multiple access techniques. The interference information of the first cell is the duplex mode information of the first cell, the physical layer parameter of the first cell in each first transmission resource pool in at least one first transmission resource pool. , And, according to claim 13, at least one of the resource allocation information of the first cell in each of the second transmission resource pools in at least one second transmission resource pool is included. The method described. The duplex mode information of the first cell is characterized by including information on the duplex mode adopted by the first cell in each third transmission resource pool in at least one third transmission resource pool. The method according to claim 14. The physical layer parameter includes at least one of a multiplex access technology basic transmission parameter, a frame structure parameter, and a subframe structure parameter.
The frame structure parameters include subframe length, time slot length, uplink resource configuration and downlink resource configuration within the frame, common reference signal configuration within the frame, common channel configuration within the frame, and control within the frame. Includes at least one of the channel configurations
The subframe structure parameter is characterized by including at least one of an uplink resource configuration and a downlink resource configuration within the subframe, a common channel configuration within the subframe, and a control channel configuration within the subframe. The method according to claim 14 or 15. The resource allocation information of the first cell in each second transmission resource pool is each in at least one second terminal facility that receives the service of the first cell in each of the second transmission resource pools. Configuration information of the terminal identification reference signal of the second terminal equipment, configuration information of the terminal identification control channel of each second terminal equipment in each of the second transmission resource pools, and in each of the second transmission resource pools. The method according to any one of claims 14 to 16, wherein the first cell in the above contains at least one of the information of the transmission resource allocated to each second terminal equipment. .. Before the second transmit / receive node transmits the interference information of the first cell to the first transmit / receive node,
To request that the second transmit / receive node transmit the interference information of the first cell in the at least one target transmission resource pool transmitted by the first transmit / receive node. Including receiving the request instructions of
When the second transmission / reception node transmits the interference information of the first cell to the first transmission / reception node,
The second transmission / reception node transmits the interference information of the first cell in each target transmission resource pool in the at least one target transmission resource pool to the first transmission / reception node in accordance with the request instruction. Including
Here, the interference information of the potential interference cell in the target transmission resource pool is the duplex mode information of the potential interference cell in the target transmission resource pool, and the multiple access of the potential interference cell in the target transmission resource pool. It is characterized by including at least one of technical information, physical layer parameters of the potential interference cell in the target transmission resource pool, and resource allocation information of the potential interference cell in the target transmission resource pool. The method according to any one of claims 13 to 17.

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