Method and apparatus for avoiding inter-cell interference, electronic device and storage medium

Abstract

Embodiments of the present application provide a method, device, electronic equipment and storage medium for avoiding inter-cell interference, the method is applied to a network side device, and includes: issuing an interference special measurement configuration to a user equipment (UE); wherein the interference special measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) in the case that a signal of a neighbor cell interferes with a signal of a serving cell; receiving the MR and the QOS, and determining frequency domain resources for scheduling the UE according to the MR and the QOS, so as to avoid inter-cell same frequency interference. The method, device, electronic equipment and storage medium for avoiding inter-cell interference provided by the embodiments of the present application can issue the interference special measurement configuration to the UE, and according to the neighbor cell signal strength reported by the edge UE, can refine the interference avoidance of the edge UE to the UE level, so as to increase the schedulable resources of the edge UE, and improve the communication rate and performance of the edge UE.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus, electronic device and storage medium for avoiding inter-cell interference. Background Technology

[0002] In the 4G (4th Generation Mobile Communication Technology) era, the wireless air interface already enabled the use of a single frequency to form a single network, which significantly reduced the investment in wireless spectrum by operators when building wireless networks. In the 5G (5th Generation Mobile Communication Technology) era, the same frequency co-location is supported. With the development and application of 5G technology, the number of 5G users is increasing, and the planned site density in building continuously covered 5G networks is also becoming increasingly higher.

[0003] In 5G, orthogonal frequency division multiplexing (OFDM) modulation is used within individual cells, ensuring orthogonality between subcarriers. Therefore, intra-cell interference is negligible. However, inter-cell macro base station communication still uses co-frequency networking, and interference between these co-frequency neighbors severely impacts the performance of user equipment (UE), leading to a poor user experience. Furthermore, in the early stages of 5G network deployment, only 100MHz of bandwidth is available for the New Radio (NR) interface. If it needs to be used both indoors and outdoors, co-frequency networking is necessary, inevitably introducing co-frequency interference and degrading network performance and user experience. Therefore, interference caused by co-frequency networking between 5G macro base stations and between indoor and outdoor base stations has become a critical challenge that operators and equipment manufacturers must address together. Summary of the Invention

[0004] This application provides a method, apparatus, electronic device, and storage medium for avoiding inter-cell interference, in order to solve the defects of interference caused by co-frequency networking between 5G macro base stations and between indoor and outdoor base stations in the prior art, thereby improving edge spectrum efficiency and thus improving the communication rate and performance of edge user equipment.

[0005] In a first aspect, embodiments of this application provide a method for avoiding inter-cell interference, applied to network-side devices, including:

[0006] The interference-specific measurement configuration is issued to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and quality of service (QOS) when the signal of the neighboring cell interferes with the signal of the serving cell.

[0007] The system receives the MR and the QoS, and determines the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid co-channel interference between cells.

[0008] Optionally, according to one embodiment of the method for avoiding inter-cell interference, the situation where the signal from a neighboring cell interferes with the signal from the serving cell includes:

[0009] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0010] Optionally, according to one embodiment of the method for avoiding inter-cell interference, the step of determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes:

[0011] Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained;

[0012] Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells;

[0013] The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources.

[0014] Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

[0015] Optionally, according to an embodiment of the method for avoiding inter-cell interference, the step of classifying the neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cells and the RSRP of the serving cell includes:

[0016] If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

[0017] Optionally, according to an embodiment of the method for avoiding inter-cell interference, determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes:

[0018] The number of Physical Resource Blocks (RPBs) required by the UE is determined based on the QoS.

[0019] Determine whether the second available resource meets the number of physical resource blocks (RPBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

[0020] Optionally, according to one embodiment of the method for avoiding inter-cell interference, determining the number of Physical Resource Blocks (RPBs) required by the UE based on the QoS includes one of the following operations:

[0021] Determine the QoS flow rate of the UE based on the services performed by the UE;

[0022] The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the modulation and coding style (MCS) used by the edge UE.

[0023] Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (RPBs) required by the UE.

[0024] Optionally, according to one embodiment of the method for avoiding inter-cell interference, determining the QoS flow rate of the UE based on the service being performed by the UE includes at least one of the following operations:

[0025] When the service being performed by the UE is a Guaranteed Bit Rate (GBR) stream service, the Guaranteed Flow Bit Rate (GFBR) of the GBR stream service is determined and used as the QoS stream rate.

[0026] If the service being performed by the UE is a non-guaranteed bit rate (NGBR) stream service, determine the priority bit rate (PBR) of the NGBR stream service and use it as the QoS stream rate; or,

[0027] When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

[0028] Optionally, according to one embodiment of the method for avoiding inter-cell interference, determining whether the second available resource satisfies the number of Physical Resource Blocks (RPBs) required by the UE includes one of the following operations:

[0029] If the number of RPBs required for the uplink channel differs from the number of RPBs required for the downlink channel, the following steps are used to determine whether the second available resource meets the number of physical resource block RPBs required by the UE:

[0030] In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of RPBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (RPBs) required by the UE is determined to be satisfied by the second available resource; or,

[0031] In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (RPBs) required for the uplink channel, and the second available resource also satisfies the number of RPBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (RPBs) required by the UE.

[0032] Optionally, according to one embodiment of the method for avoiding inter-cell interference, the step of sending interference-specific measurement configuration to the user equipment (UE) includes:

[0033] In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

[0034] Secondly, embodiments of this application also provide a method for avoiding inter-cell interference, applied to a terminal device, including:

[0035] Dedicated measurement configuration for receiving interference;

[0036] According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a measurement report (MR) and quality of service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0037] Optionally, according to one embodiment of the method for avoiding inter-cell interference, the situation where the signal from a neighboring cell interferes with the signal from the serving cell includes:

[0038] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0039] Thirdly, embodiments of this application also provide a network-side device, including a memory, a transceiver, and a processor, wherein:

[0040] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0041] The interference-specific measurement configuration is issued to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell.

[0042] The system receives the MR and the QoS, and determines the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid co-channel interference between cells.

[0043] Optionally, according to a network-side device of one embodiment of this application, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0044] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0045] Optionally, according to one embodiment of the network-side device of this application, determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes:

[0046] Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained;

[0047] Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells;

[0048] The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources.

[0049] Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

[0050] Optionally, according to one embodiment of the network-side device of this application, the step of classifying the neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cells and the RSRP of the serving cell includes:

[0051] If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

[0052] Optionally, according to a network-side device of one embodiment of this application, determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes:

[0053] The number of Physical Resource Blocks (RPBs) required by the UE is determined based on the QoS.

[0054] Determine whether the second available resource meets the number of physical resource blocks (RPBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

[0055] Optionally, in a network-side device according to an embodiment of this application, determining the number of Physical Resource Blocks (RPBs) required by the UE based on the QoS includes one of the following operations:

[0056] Determine the QoS flow rate of the UE based on the services performed by the UE;

[0057] The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE.

[0058] Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (RPBs) required by the UE.

[0059] Optionally, in a network-side device according to an embodiment of this application, determining the QoS flow rate of the UE based on the service being performed by the UE includes at least one of the following operations:

[0060] When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined.

[0061] If the service being performed by the UE is a non-guaranteed bit-rate (NGBR) stream service, determine the priority bit rate (PBR) of the NGBR stream service and use it as the QoS stream rate; or,

[0062] When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

[0063] Optionally, according to a network-side device of one embodiment of this application, determining whether the second available resource satisfies the number of Physical Resource Blocks (RPBs) required by the UE includes one of the following operations:

[0064] If the number of RPBs required for the uplink channel differs from the number of RPBs required for the downlink channel, the following steps are used to determine whether the second available resource meets the number of physical resource block RPBs required by the UE:

[0065] In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of RPBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (RPBs) required by the UE is determined to be satisfied by the second available resource; or,

[0066] In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (RPBs) required for the uplink channel, and the second available resource also satisfies the number of RPBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (RPBs) required by the UE.

[0067] Optionally, according to one embodiment of the network-side device of this application, the step of sending interference-specific measurement configuration to the user equipment (UE) includes:

[0068] In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

[0069] Fourthly, embodiments of this application also provide a terminal device, including a memory, a transceiver, and a processor, wherein:

[0070] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0071] Dedicated measurement configuration for receiving interference;

[0072] According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a measurement report (MR) and quality of service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0073] Optionally, according to one embodiment of the terminal device of this application, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0074] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0075] Fifthly, embodiments of this application also provide a device for avoiding inter-cell interference, applied to network-side equipment, including:

[0076] The sending unit is used to send interference-specific measurement configuration to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell.

[0077] The receiving and processing unit is configured to receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS, so as to avoid co-channel interference between cells.

[0078] Sixthly, embodiments of this application also provide a device for avoiding inter-cell interference, applied to a terminal device, including:

[0079] The receiving unit is used to receive interference-specific measurement configurations;

[0080] The detection and reporting unit is configured to report a measurement report (MR) and a quality of service (QOS) when a signal from a neighboring cell interferes with the signal of the serving cell, based on the interference-specific measurement configuration; wherein the MR and the QOS are used to determine frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0081] In a seventh aspect, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the method for avoiding inter-cell interference as described in the first aspect, or for causing the processor to perform the steps of the method for avoiding inter-cell interference as described in the second aspect.

[0082] The method, apparatus, electronic device, and storage medium for avoiding inter-cell interference provided in this application embodiment, by issuing interference-specific measurement configuration to the UE, refines the interference avoidance of the edge UE to the UE level based on the neighboring cell signal strength reported by the edge UE, thereby increasing the resources that the edge UE can schedule and improving the communication rate and performance of the edge UE. Attached Figure Description

[0083] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0084] Figure 1 This is one of the flowcharts illustrating the method for avoiding inter-cell interference provided in this application embodiment;

[0085] Figure 2 This application illustrates the MR data and QoS metrics collected by the serving cell in an embodiment of the present application.

[0086] Figure 3 This illustrates the results of classifying the neighboring cells of a UE according to the degree of interference, as provided in an embodiment of this application.

[0087] Figure 4 This is a second schematic flowchart of the method for avoiding inter-cell interference provided in the embodiments of this application;

[0088] Figure 5 This is the third flowchart illustrating the method for avoiding inter-cell interference provided in the embodiments of this application;

[0089] Figure 6 This application provides an embodiment of MR data and QOS metrics reported by a UE based on an interference-dedicated measurement configuration.

[0090] Figure 7 The results of classifying the neighboring cells of the UE according to the degree of interference provided in the embodiments of this application are shown;

[0091] Figure 8 This illustrates the remaining available resources for each UE after avoiding interference with the main frequency of neighboring cells, as provided in the embodiments of this application.

[0092] Figure 9 MCS index table 2 for PDSCH and MCS index table 2 for PUSCH are shown in the embodiments of this application.

[0093] Figure 10 The embodiments of this application show the number of PRBs required for each UE to meet QoS, whether the remaining available resources of each UE after avoiding interference meet QoS requirements, and the frequency domain resources available for each UE when it is scheduled.

[0094] Figure 11 This is the fourth flowchart illustrating the method for avoiding inter-cell interference provided in the embodiments of this application;

[0095] Figure 12 This is a schematic diagram of the network-side device provided in an embodiment of this application;

[0096] Figure 13 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application;

[0097] Figure 14 This is one of the structural schematic diagrams of the device for avoiding inter-cell interference provided in the embodiments of this application;

[0098] Figure 15 This is a second schematic diagram of the structure of the device for avoiding inter-cell interference provided in the embodiments of this application; Detailed Implementation

[0099] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0100] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0101] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0102] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0103] In the era of 5G communication systems, with the increasing density of sites using co-frequency networking and the growing number of 5G users, co-frequency interference between 5G cells is also increasing. To avoid co-frequency interference between cells, there are currently two solutions: Solution 1, implementing inter-frequency; Solution 2, implementing spatial isolation. For the first solution, since there are no more frequency resources available, it is not possible to directly add more. Therefore, a cell edge inter-frequency solution has emerged, namely the Inter-Cell Interference Coordination (ICIC) solution. For the ICIC solution, the entire bandwidth of the system can be allocated to users in the middle of the cell. Evolved Node B (eNB) transmits at reduced power on the secondary frequency to avoid interfering with the main frequency of adjacent cells. For user equipment in the cell edge area, only the main frequency is usually allocated, and the eNB can transmit at high power on the main frequency. This solution sacrifices some capacity at the cell edge. The second approach, in the era of 5G communication systems, utilizes beam isolation between adjacent cells to reduce interference. Beamforming is used for service channels to achieve spatial beam isolation of services, and a time-division scanning mechanism is adopted to determine the beam start order between adjacent cells based on the Physical Cell Identifier (PCI).

[0104] In implementing the inter-frequency scheme, only two categories of UEs are distinguished: cell center UEs and cell edge UEs. UEs at the cell edge use the same resource range and can only use the primary frequency of their own cell. For example, when the serving cell is 4, UE1 (located between cells 4 and 3), UE2 (located between cells 4, 1, and 3), and UE3 (located between cells 4 and 5) can only use the primary frequency of cell 4. However, when an edge UE requires more resources, such as exceeding one-third of the system's total bandwidth or a specified portion, the edge UE will have no schedulable resources. This limitation significantly reduces the capacity of edge UEs.

[0105] In implementing spatial isolation schemes, interference between control channels can be effectively reduced. However, for service channels, UEs typically transmit data continuously, and there will inevitably be times when beams between adjacent channels overlap. Furthermore, service channels use narrow beams, making interference even more severe in overlapping areas.

[0106] To address inter-cell interference issues in co-frequency networks, particularly between macro base stations and between indoor and outdoor base stations, and to improve spectral efficiency at base station edges, thereby enhancing communication speed and performance of edge user equipment (UEs), this application provides a method, apparatus, electronic device, and storage medium for mitigating inter-cell interference. The method further classifies edge UEs, overlays measurement results reported by the UEs, and selects neighboring cells with strong and low interference. Then, based on the UE's Quality of Service (QoS) requirements, it determines the remaining resources after removing the main frequencies of all neighboring cells or the strongest neighboring cell from the total bandwidth for scheduling the UE. Compared to implementing a cross-frequency scheme, this method increases the resources available to UEs at the two neighboring cell boundaries while also meeting UE QoS requirements, effectively improving edge spectral efficiency and UE performance. The following description, in conjunction with the accompanying drawings, illustrates the method, apparatus, electronic device, and storage medium for mitigating inter-cell interference provided in this application.

[0107] Figure 1 This is one of the flowcharts illustrating the method for avoiding inter-cell interference provided in this application embodiment, such as... Figure 1 As shown, this application provides a method for avoiding inter-cell interference, the executing entity of which can be a network-side device, such as a base station. The method includes:

[0108] Step 110: Send interference-specific measurement configuration to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell.

[0109] Specifically, in this embodiment of the application, the base station first sends an interference-specific measurement configuration to the UE. This interference-specific measurement configuration can be carried through higher-layer signaling, such as an RRC message.

[0110] Step 120: Receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid co-channel interference between cells.

[0111] Specifically, in this embodiment of the application, after issuing the interference-dedicated measurement configuration, the base station collects the measurement reporting data of the UE; after receiving the MR and the QoS, it determines the frequency domain resources for scheduling the UE based on the MR and the QoS.

[0112] For example, if the MR determines that the main frequency of the neighboring cell causes signal interference to the serving cell, and the QoS determines that the remaining frequency domain resources after avoiding the use of the main frequency of the neighboring cell are sufficient to meet the QoS requirements, then the frequency domain resources used to schedule the UE are determined to be the available resources remaining after avoiding the use of the main frequency resources of the neighboring cell.

[0113] The method for avoiding inter-cell interference provided in this application embodiment issues interference-specific measurement configurations to the UE and refines the interference avoidance of the edge UE to the UE level based on the neighboring cell signal strength reported by the edge UE, thereby increasing the resources that the edge UE can schedule and improving the communication rate and performance of the edge UE.

[0114] Optionally, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0115] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0116] Specifically, the 3GPP (3rd Generation Partnership Project) specification proposes a set of predefined measurement reporting mechanisms executed by the UE. These predefined measurement reporting types are called "events." The type of "event" that the UE must report is specified by the RRC signaling message sent by the base station. Among them, Event A3 is triggered when the offset of a neighboring cell exceeds that of a specified cell, thus triggering a measurement report. This interference-dedicated measurement configuration belongs to the Event A3 type, but in order not to affect normal handover, the trigger threshold of this interference-dedicated measurement configuration is lower than the threshold of normal co-channel handover. For example, the threshold a3 offset for co-channel handover is set to 15dB, and when the UE finds any neighboring cell whose measurement value is 15dB higher than the serving cell, the UE reports Event A3; while the trigger threshold for the interference-dedicated measurement configuration is set to 6dB, and when the UE finds a neighboring cell whose measurement value is 6dB higher than the serving cell but not more than 15dB higher, the UE reports MR and QoS, triggering co-channel interference avoidance. If the UE does not report interference-specific measurements including neighboring cell signal strength, it indicates that the UE is a central user and can use the full bandwidth within the system.

[0117] This application identifies edge UEs by setting the co-channel interference avoidance to be triggered only when the signal of the neighboring cell interferes with the signal of the serving cell, thereby enabling inter-cell interference avoidance at the UE level without affecting normal handover.

[0118] Optionally, determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes:

[0119] Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained;

[0120] Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells;

[0121] The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources.

[0122] Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

[0123] Specifically, after the measurement configuration is issued, the serving cell will collect the UE's measurement reporting data. The collected MR data and QoS metrics are as follows: Figure 2 The table below shows the measurement parameters for MR data. These parameters can be either the Reference Signal Received Power (RSRP) of the Synchronization Signal Block (SSB) or the RSRP of the Channel State Information Reference Signal (CSI-RS). The appropriate parameter can be configured based on commonly used field parameters. Figure 2 The table shows the RSRP of the SSB. Figure 2 In this diagram, each user equipment is represented by User 1, User 2, and User 3, referring to three different UEs. The serving cell and neighboring cell metrics for each UE are represented by SSB-RSRP 1, SSB-RSRP 2, SSB-RSRP 3, and SSB-RSRP 4, referring to the RSRP of the SSB of each cell. For example, the RSRP of the SSB of cell 1 measured by the UE is represented as SSB-RSRP 1. The neighboring cell IDs are represented as Adjacent Cell ID 2, Adjacent Cell ID 3, Adjacent Cell ID 4, and Adjacent Cell ID 5, referring to different neighboring cells.

[0124] Therefore, the RSRP of neighboring cells and the RSRP of the serving cell can be obtained based on the MR data. After obtaining the RSRP of neighboring cells and the RSRP of the serving cell, the degree of co-channel interference of each neighboring cell of the UE to the serving cell can be judged, and the neighboring cells of the UE can be classified into tiers. Those with higher interference levels are classified as high-interference neighboring cells, and those with lower interference levels are classified as low-interference neighboring cells. After classification, the remaining available resources for each UE after avoiding the use of the main frequency resources of each tier of interfering neighboring cells are calculated. The remaining available resources after avoiding both high-interference and low-interference neighboring cells are: system bandwidth minus the main frequency resources of high-interference neighboring cells, and then minus the main frequency resources of low-interference neighboring cells. The remaining available resources after avoiding only the high-interference neighboring cells are: system bandwidth minus the main frequency resources of high-interference neighboring cells.

[0125] like Figure 2 As shown in the table, QoS metrics are the relevant metrics transmitted by the core network to the base station when a UE engages in a service. This mainly involves collecting the sum of all Guaranteed Flow Bit Rates (GFBR) and Prioritized Bit Rates (PBR) for the UE. QoS metrics distinguish between uplink and downlink; DL represents downlink, and UL represents uplink. For Guaranteed Flow Bit Rate (GBR) services, the sum of the GFBRs for all GBR services needs to be extracted; for Non-Guaranteed Flow Bit Rate (NGBR) services, the sum of the PBRs for all NGBR services needs to be extracted. Figure 2 The code uses DL GFBR1, DL PBR1, UL GFBR1, and UL PBR1 to represent the sum of downlink GFBR rates, downlink PBR rates, uplink GFBR rates, and uplink PBR rates for User 1, respectively. The same method is used to represent the sums of rates for User 2 and User 3. After calculating the remaining available resources for each UE after avoiding the use of primary frequency resources in each interfering neighboring cell (i.e., the first and second available resources), it is determined whether the remaining available resources meet the QoS requirements, thereby determining the frequency domain resources used for scheduling the UE.

[0126] This application categorizes the UE's neighboring cells based on the degree of co-channel interference of each neighboring cell to the serving cell, and combines this with QoS requirements to adjust the frequency domain resources to be avoided, thereby increasing the available resources for UEs located in overlapping coverage areas of adjacent cells and improving the efficiency of spectrum utilization at cell edges.

[0127] Optionally, classifying the neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cell and the RSRP of the serving cell includes:

[0128] If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

[0129] Specifically, two thresholds can be set: Threshold1 and Threshold2. The following describes a method for classifying neighboring cells into high-interference and low-interference neighboring cells based on the RSRP of the neighboring cell, the RSRP of the serving cell, the first threshold Threshold1, and the second threshold Threshold2.

[0130] For each UE, determine each neighboring cell. If:

[0131] The neighboring cell's RSRP > Threshold1 (Formula 1) or...

[0132] (RSRP difference between the neighboring cell and the serving cell) > Threshold2 Formula 2

[0133] If the neighboring cell is classified as high-interference, then it is classified as a high-interference neighboring cell; otherwise, it is classified as a low-interference neighboring cell. Possible classification results are as follows: Figure 3 As shown, for User 1, two neighboring cells that detected signals interfering with the serving cell were identified as Adjacent Cell ID 2 and Adjacent Cell ID 3. Using the above classification method, they were classified as high-interference neighboring cells and low-interference neighboring cells, respectively. The classification results for User 2 and User 3 were also represented in the same way.

[0134] By adopting the above classification method, neighboring cells can be classified into high-interference neighboring cells or low-interference neighboring cells according to the degree of interference of neighboring cells to the serving cell.

[0135] Optionally, determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes:

[0136] The number of Physical Resource Blocks (RPBs) required by the UE is determined based on the QoS.

[0137] Determine whether the second available resource meets the number of physical resource blocks (RPBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

[0138] Specifically, based on the rate requirements and symbol modulation scheme in QoS, the number of Physical Resource Blocks (PRBs) that can meet the UE's requirements can be determined. After determining the number of PRBs required by the UE, it can be determined whether the remaining available resources after avoiding the main frequency resources of interfering neighboring cells meet the number of PRBs required by the UE. If the remaining frequency band resources after avoiding both high-interference and low-interference neighboring cells can meet the number of PRBs required by the UE, then the frequency band resources that can be scheduled after interference avoidance for the UE are the frequency band resources remaining after avoiding both high and low interference levels; otherwise, the frequency band resources remaining after only avoiding interference from high-interference neighboring cells will be used as the frequency band resources for scheduling the UE, and in this case, the power will be reduced and transmitted on the main frequency of the low-interference neighboring cell.

[0139] This application improves the efficiency of spectrum utilization at the cell edge by employing two avoidance methods: avoiding two levels of interference and avoiding only high-level interference. It also determines whether the remaining frequency domain resources after avoidance meet the UE's QoS requirements, thus fully considering the QoS requirements of each UE and enhancing user experience.

[0140] Optionally, determining the number of Physical Resource Blocks (RPBs) required by the UE based on the QoS includes one of the following operations:

[0141] Determine the QoS flow rate of the UE based on the services performed by the UE;

[0142] The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE.

[0143] Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (RPBs) required by the UE.

[0144] Specifically, for each UE, the final schedulable frequency band resources are determined based on its current service QoS requirements. QoS metrics include relevant indicators for various bearer services, which can be used to determine the UE's QoS flow rate requirements. The bandwidth required by the UE is equivalent to the bandwidth of side-by-side Physical Resource Blocks (PRBs) in the frequency domain. Furthermore, the data carrying capacity of one OFDM symbol depends on the modulation scheme; therefore, the UE's Modulation and Coding Scheme (MCS) needs to be determined. This MCS can be obtained from the Channel Quality Indicator (CQI) reported by the UE, or it can be inferred from the MCS used by known edge UEs. Once the MCS and QoS flow rate requirements are obtained, the number of Physical Resource Blocks (PRBs) required by the UE can be calculated based on these requirements.

[0145] This application calculates the number of PRBs required by the user equipment based on the QoS requirements of the user equipment, and compares the remaining frequency domain resources after interference avoidance with the number of PRBs required by the UE, thereby determining whether the remaining frequency domain resources after interference avoidance meet the UE's QoS requirements.

[0146] Optionally, determining the QoS flow rate of the UE based on the service being performed by the UE includes at least one of the following operations:

[0147] When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined.

[0148] If the service being performed by the UE is a non-guaranteed bit-rate (NGBR) stream service, determine the priority bit rate (PBR) of the NGBR stream service and use it as the QoS stream rate; or,

[0149] When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

[0150] Specifically, QCI (QoS class identifier) ​​is a parameter used by the system to identify the transmission characteristics of service data packets. Protocol 23203 defines QCI values ​​corresponding to different bearer services. It is particularly important to note that IP Multimedia Subsystem (IMS) signaling services with QCI=5 belong to Non-GBR and have a higher priority than GBR bearers. Based on the QCI, bearers can be divided into two main categories: GBR (Guaranteed Bit Rate) bearers and Non-GBR (Non-Guaranteed Bit Rate) bearers. For each UE, the QoS flow rate is determined according to the type of its current service. For GBR flow services, the required bandwidth resources are calculated based on the sum of the GFBR rates; for NGBR flow services, the required bandwidth resources are calculated based on the sum of the PBR rates; for concurrent GBR and NGBR flow services, the required bandwidth resources are calculated by adding the sum of the PBR rates to the sum of the GFBR rates.

[0151] This application calculates the QoS flow rate of an edge UE by using GFBR and PBR indices, thereby determining the flow rate required to meet the UE's QoS requirements. This further allows the determination of the minimum frequency domain resources required by the UE, enabling the adjustment of the remaining available resources after interference avoidance based on the UE's frequency domain requirements.

[0152] Optionally, determining whether the second available resource satisfies the number of Physical Resource Blocks (RPBs) required by the UE includes one of the following operations:

[0153] If the number of RPBs required for the uplink channel differs from the number of RPBs required for the downlink channel, the following steps are used to determine whether the second available resource meets the number of physical resource block RPBs required by the UE:

[0154] In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of RPBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (RPBs) required by the UE is determined to be satisfied by the second available resource; or,

[0155] In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (RPBs) required for the uplink channel, and the second available resource also satisfies the number of RPBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (RPBs) required by the UE.

[0156] Specifically, when avoiding interference from both high-interference and low-interference cells, the resources required for the uplink channel and the downlink channel may differ. To address this discrepancy, for Time Division Duplex (TDD) communication systems, the system with the higher PRB (Programmable Buffer) requirement for both the uplink and downlink channels is used; for Frequency Division Duplex (FDD) systems, the resources required for the uplink and downlink channels can be calculated independently.

[0157] This application takes into account the possibility that the communication system may be frequency division duplex or time division duplex, and proposes a specific calculation method, which has broad applicability.

[0158] Optionally, the step of sending interference-specific measurement configuration to the user equipment (UE) includes:

[0159] In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

[0160] Specifically, in the UE's first Radio Resource Control (RRC) reconfiguration message, interference-specific measurement configuration is sent to the UE. When the UE first enters the RRC connection state, the base station configures the handover measurement event for the UE in the first RRC reconfiguration message it sends. Therefore, it is appropriate to send the interference-specific measurement configuration in this RRC message as well.

[0161] Figure 4 This is a second schematic flowchart of the method for avoiding inter-cell interference provided in the embodiments of this application, see reference. Figure 4 This application provides a method for avoiding inter-cell interference, including:

[0162] Step 111: The base station sends the interference-specific measurement configuration to the UE;

[0163] Specifically, in the first RRC reconfiguration message of the UE, the base station sends the interference-specific measurement configuration to the UE. After receiving the interference-specific measurement configuration, the UE reports the measurement report (MR) and the quality of service (QOS) according to the configuration when the signal of the neighboring cell interferes with the signal of the serving cell.

[0164] Step 121: The base station receives the measurement report and QoS reported by the UE;

[0165] Specifically, after the interference-specific measurement configuration is issued, the base station of the serving cell will collect the measurement reporting data of the UE, including the Measurement Report (MR) and the Quality of Service (QOS).

[0166] Step 122: Classify the reported interfering neighboring cells according to their interference intensity;

[0167] Specifically, based on the reported interference intensity of neighboring cells to the serving cell, each neighboring cell is classified into two tiers: high-interference neighboring cells and low-interference neighboring cells.

[0168] Step 123: Calculate the remaining resources for the UE after avoiding interference with neighboring cells;

[0169] Specifically, the remaining available resources after avoiding the use of the main frequency resources of high-interference neighboring cells, and the remaining available resources after avoiding the use of the main frequency resources of both high-interference and low-interference neighboring cells are calculated.

[0170] Step 124: Determine the schedulable frequency domain resources based on the UE's QoS;

[0171] Specifically, it calculates whether the remaining available resources after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells meet the QoS requirements of the UE. If the QoS requirements of the UE are met, the UE is scheduled on the remaining available resources after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells. If the QoS requirements are not met, the UE is scheduled on the remaining available resources after avoiding the use of the main frequency resources of high-interference neighboring cells.

[0172] Figure 4 The main steps of the method for avoiding inter-cell interference provided in the embodiments of this application are shown, but the different choices after the determination are not specifically shown, nor are specific numerical values ​​introduced. Figure 5 This is the third flowchart illustrating the method for avoiding inter-cell interference provided in this application embodiment. See below for further details. Figure 5 Provide examples of methods to avoid inter-cell interference that are described in more detail and include specific numerical values.

[0173] Assume the serving cell is Cell 1, and the neighboring cells are Cells 2 through 7 (Cell2, Cell3, Cell4, Cell5, Cell6, Cell7, where Cell2, Cell4, and Cell6 have the same clock frequency, and Cell3, Cell5, and Cell7 have the same clock frequency). The total network bandwidth is 273 RPB, which is divided into three parts for each cell's clock frequency, with each part containing 91 RPB. To easily distinguish between different clock frequencies, the clock frequency of Cell 1 is marked in red, the clock frequencies of Cell 2, Cell 4, and Cell 6 are marked in blue, and the clock frequencies of Cell 3, Cell 5, and Cell 7 are marked in green.

[0174] Using the method for avoiding inter-cell interference provided in the embodiments of this application, firstly, the base station sends an interference-specific measurement configuration to the UE in the UE's first RRC reconfiguration message;

[0175] Then, the UE performs co-channel interference avoidance measurements according to the dedicated interference measurement configuration. If the signal from a neighboring cell interferes with the signal from the serving cell, the measurement results are reported. Correspondingly, the base station in the serving cell waits for the UE to report the measurement results. If the UE does not report interfering neighboring cells, it indicates that the UE is a central user. In this case, the UE can use the full bandwidth within the system, that is, all bandwidth resources in the cell are frequency domain resources used to schedule the UE. The UE will then be scheduled on the frequency domain resources used to schedule the UE, and the process ends.

[0176] If the UE reports interfering neighboring cells, then assume that the UE reports MR data and QoS metrics based on the interference-specific measurement configuration, as follows: Figure 6 As shown, Figure 6 The diagram shows the RSRP value of the serving cell, Cell1, for each UE, the ID of its interfering neighbor cell and the corresponding RSRP value of the interfering neighbor cell, as well as the rates of various QoS metrics.

[0177] Next, according to Figure 6 The MR data and QoS indicators shown are used to classify the UE's interfering neighboring cells into high and low levels according to the degree of interference.

[0178] Assuming the first threshold Threshold1 = -90 and the second threshold Threshold2 = -10, substitute the RSRP of each UE's neighboring cells and the RSRP of the serving cell into Formula 1 or Formula 2 above.

[0179] For example, for User 1, its interfering neighbor Cell 2 has an RSRP of -89, which is greater than Threshold 1. Therefore, Cell 2 is a high-interference neighbor. Its other interfering neighbor, Cell 3, has an RSRP of -101, which is less than Threshold 1. Furthermore, the difference between Cell 3's RSRP and the serving cell's RSRP is -11, which is less than Threshold 2. Neither of these conditions is met, so Cell 3 is a low-interference neighbor. And so on, we can obtain... Figure 7 The example shown in this application illustrates the result of classifying the neighboring cells of the UE according to the degree of interference.

[0180] Based on the above classification results, the remaining resources after avoiding interference with neighboring cells are calculated. Substituting into the above calculation method, the remaining available resources for avoiding both high-interference and low-interference neighboring cells are: system bandwidth minus the main frequency resources of the high-interference neighboring cells, and then minus the main frequency resources of the low-interference neighboring cells; the remaining available resources for avoiding only the high-interference neighboring cells are: system bandwidth minus the main frequency resources of the high-interference neighboring cells.

[0181] For example, for User 1, its interfering neighbor Cell2 is a high-interference neighbor cell, with its main frequency in the blue band, and Cell3 is a low-interference neighbor cell, with its main frequency in the green band. Therefore, to avoid both high-interference and low-interference neighbor cells, the remaining available resources are the system bandwidth minus the blue band, then minus the green band, leaving only the red band. To avoid only the high-interference neighbor cell, the remaining available resources are the system bandwidth minus the blue band, leaving the red and green bands. And so on, until... Figure 8 The embodiments of this application show the remaining available resources for each UE after avoiding interference with the main frequency of neighboring cells.

[0182] After obtaining the remaining resources after avoiding interference with neighboring cells, the remaining available resources for both high-interference and low-interference neighboring cells are determined based on the QoS of each UE to meet the UE's QoS requirements.

[0183] The modulation and coding scheme (MCS) used by the UE can be determined using the Channel Quality Indicator (CQI) reported by the UE, as mentioned above. For the sake of simplicity in describing the main steps, it is assumed that all UEs use the same downlink modulation and coding scheme (MCS). Figure 9 The modulation scheme shown in Table 2 of the MCS index for the Physical Downlink Shared Channel (PDSCH) is MCS=4. Downlink modulation uses the same MCS=4 scheme as in Table 2 of the Physical Uplink Shared Channel (PUSCH). There are 1600 downlink slots per second and 400 uplink slots per second. Both uplink and downlink are single streams. It is assumed that the demodulation reference signal (DMRS) is configured as a single symbol. Based on the MCS and QoS flow rates, the number of RPBs required for each UE can be determined, as shown below. Figure 10 The number of PRBs required for each UE to satisfy QoS is shown.

[0184] This section illustrates the calculation method for the required number of PRBs. For the sake of simplicity, the resources occupied by the Channel State Information Reference Signal (CSI-RS) and control-resource set (CORESET) symbols are ignored. The resource element (RE) is the smallest granularity of the physical layer resource, representing one subcarrier in the frequency domain and one symbol in the time domain. The formula for calculating the required number of PRBs is simplified as follows:

[0185] The number of PRBs required for downlink = rate / (REs available in 1 PRB per time slot * spectral efficiency * number of downlink streams * number of downlink time slots per second).

[0186] Number of PRBs required for uplink = Rate / (REs available per PRB per time slot * Spectral efficiency * Number of uplink streams * Number of uplink time slots per second)

[0187] Substituting the values ​​from this embodiment into the formula for calculating the required number of PRBs, the number of symbols for a PRB transmission service within one time slot is 13, and the number of subcarriers within one PRB is 12. To achieve a downlink rate of 5 + 1 = 6 Mbps for User1 (the sum of User1's downlink GFBR rates is 5 Mbps, and the sum of its downlink PBR rates is 1 Mbps), the required number of PRBs is:

[0188] 6*10 6 / (13*12*1.1758*1*1600)=21 PRB;

[0189] Similarly, for User1 to achieve an uplink speed of 1 + 0.3 = 1.3 Mbps (the sum of User1's uplink GFBR speeds is 1 Mbps, and the sum of its uplink PBR speeds is 0.3 Mbps), the number of PRBs required is:

[0190] 1.3*10 6 / (13*12*0.6016*1*400)=35 PRBs.

[0191] Following this logic, we can obtain the following: Figure 10 The embodiments of this application show the number of PRBs required for each UE to satisfy QoS.

[0192] Will Figure 10 The number of PRBs required for each UE to satisfy QoS is shown. Figure 9 By comparing the remaining available resources of each UE after avoiding interference with the main frequency of neighboring cells, as shown, we can obtain the following: Figure 10 The remaining available resources for each UE after avoiding interference meet the QoS requirements.

[0193] According to the above judgment rule, if the remaining frequency band resources after simultaneously avoiding both high-interference and low-interference neighboring cells can meet the UE's required number of PRBs, then the frequency band resources available for scheduling after interference avoidance for the UE are the remaining frequency band resources after avoiding both high and low interference levels; otherwise, the frequency band resources remaining after only avoiding high-interference neighboring cells will be used as the frequency band resources for scheduling the UE. Figure 10As shown, the remaining available resources for each UE after avoiding interference meet the QoS requirements. It can be seen that, except for User2, the remaining frequency band resources after simultaneously avoiding both high-interference and low-interference neighbor cells are sufficient to meet the required number of PRBs for each user. Therefore, the available frequency domain resources for other users when scheduled are the remaining frequency band resources after simultaneously avoiding both high-interference and low-interference neighbor cells. However, the available frequency domain resources for User2 when scheduled are the remaining frequency band resources after only avoiding high-interference neighbor cells. This is shown in the figure below. Figure 10 The frequency domain resources available when each UE is scheduled are shown.

[0194] The method for avoiding inter-cell interference provided in this application determines the frequency domain resources used for scheduling the UE after avoiding interference from neighboring cells, based on the interference level of each UE's neighboring cells and the UE's QoS requirements. This refines interference avoidance to the UE level, fully considers the QoS requirements of each UE, improves user perception, increases the spectrum resources available to edge UEs, and improves the efficiency of edge spectrum utilization.

[0195] Figure 11 This is the fourth flowchart illustrating the method for avoiding inter-cell interference provided in this application embodiment, as follows: Figure 11 As shown, this application provides a method for avoiding inter-cell interference, the executing entity of which can be a terminal device, such as a mobile phone. The method includes:

[0196] Step 1110: Receive interference-specific measurement configuration;

[0197] Specifically, in this embodiment of the application, the UE receives an interference-specific measurement configuration sent by the base station. This interference-specific measurement configuration can be carried through higher-layer signaling, such as an RRC message.

[0198] Step 1120: According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a measurement report (MR) and quality of service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0199] Specifically, in this embodiment of the application, after receiving the interference-dedicated measurement configuration, the UE will detect whether the signal of the neighboring cell interferes with the signal of the serving cell. If an interfering neighboring cell is detected, the UE will report a measurement report (MR) and a quality of service (QOS). The reported MR and QOS will be used to determine the frequency domain resources used to schedule the UE in order to avoid co-channel interference between cells.

[0200] The method for avoiding inter-cell interference provided in this application embodiment refines the interference avoidance of the edge UE to the UE level by receiving interference-specific measurement configuration and based on the neighboring cell signal strength reported by the edge UE, thereby increasing the resources that the edge UE can schedule and improving the communication rate and performance of the edge UE.

[0201] Optionally, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0202] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0203] Specifically, the 3GPP (3rd Generation Partnership Project) specification proposes a set of predefined measurement reporting mechanisms executed by the UE. These predefined measurement reporting types are called "events." The type of "event" that the UE must report is specified by the RRC signaling message sent by the base station. Among them, Event A3 is triggered when the offset of a neighboring cell exceeds that of a specified cell, thus triggering a measurement report. This interference-dedicated measurement configuration belongs to the Event A3 type, but in order not to affect normal handover, the trigger threshold of this interference-dedicated measurement configuration is lower than the threshold of normal co-channel handover. For example, the threshold a3 offset for co-channel handover is set to 15dB, and when the UE finds any neighboring cell whose measurement value is 15dB higher than the serving cell, the UE reports Event A3; while the trigger threshold for the interference-dedicated measurement configuration is set to 6dB, and when the UE finds a neighboring cell whose measurement value is 6dB higher than the serving cell but not more than 15dB higher, the UE reports MR and QoS, triggering co-channel interference avoidance. If the UE does not report interference-specific measurements including neighboring cell signal strength, it indicates that the UE is a central user and can use the full bandwidth within the system.

[0204] This application identifies edge UEs by setting the co-channel interference avoidance to be triggered only when the signal of the neighboring cell interferes with the signal of the serving cell, thereby enabling inter-cell interference avoidance at the UE level without affecting normal handover.

[0205] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0206] Figure 12 This is a schematic diagram of the structure of a network-side device provided in an embodiment of this application, such as... Figure 12 As shown, the network-side device includes a memory 1220, a transceiver 1200, and a processor 1210, wherein:

[0207] The memory 1220 is used to store computer programs; the transceiver 1200 is used to send and receive data under the control of the processor 1210; the processor 1210 is used to read the computer program in the memory 1220 and perform the following operations:

[0208] The interference-specific measurement configuration is issued to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell.

[0209] The system receives the MR and the QoS, and determines the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid co-channel interference between cells.

[0210] Specifically, transceiver 1200 is used to receive and send data under the control of processor 1210.

[0211] Among them, Figure 12 In this context, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 1210) and memory (memory 1220). The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1200 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1210 during operation.

[0212] The processor 1210 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0213] Optionally, according to a network-side device of one embodiment of this application, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0214] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0215] Optionally, according to one embodiment of the network-side device of this application, determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes:

[0216] Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained;

[0217] Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells;

[0218] The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources.

[0219] Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

[0220] Optionally, according to one embodiment of the network-side device of this application, the step of classifying the neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cells and the RSRP of the serving cell includes:

[0221] If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

[0222] Optionally, according to a network-side device of one embodiment of this application, determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes:

[0223] The number of Physical Resource Blocks (RPBs) required by the UE is determined based on the QoS.

[0224] Determine whether the second available resource meets the number of physical resource blocks (RPBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

[0225] Optionally, in a network-side device according to an embodiment of this application, determining the number of Physical Resource Blocks (RPBs) required by the UE based on the QoS includes one of the following operations:

[0226] Determine the QoS flow rate of the UE based on the services performed by the UE;

[0227] The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE.

[0228] Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (RPBs) required by the UE.

[0229] Optionally, in a network-side device according to an embodiment of this application, determining the QoS flow rate of the UE based on the service being performed by the UE includes at least one of the following operations:

[0230] When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined.

[0231] If the service being performed by the UE is a non-guaranteed bit-rate (NGBR) stream service, determine the priority bit rate (PBR) of the NGBR stream service and use it as the QoS stream rate; or,

[0232] When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

[0233] Optionally, according to a network-side device of one embodiment of this application, determining whether the second available resource satisfies the number of Physical Resource Blocks (RPBs) required by the UE includes one of the following operations:

[0234] If the number of RPBs required for the uplink channel differs from the number of RPBs required for the downlink channel, the following steps are used to determine whether the second available resource meets the number of physical resource block RPBs required by the UE:

[0235] In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of RPBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (RPBs) required by the UE is determined to be satisfied by the second available resource; or,

[0236] In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (RPBs) required for the uplink channel, and the second available resource also satisfies the number of RPBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (RPBs) required by the UE.

[0237] Optionally, according to one embodiment of the network-side device of this application, the step of sending interference-specific measurement configuration to the user equipment (UE) includes:

[0238] In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

[0239] It should be noted that the network-side device provided in this application embodiment can implement all the method steps implemented by the method embodiment with the network-side device as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0240] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments of this application.

[0241] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0242] Figure 13 This is a schematic diagram of the structure of a terminal provided in an embodiment of this application, such as... Figure 13 As shown, the terminal includes a memory 1320, a transceiver 1300, and a processor 1310, wherein:

[0243] The memory 1320 is used to store computer programs; the transceiver 1300 is used to send and receive data under the control of the processor 1310; the processor 1310 is used to read the computer program in the memory 1320 and perform the following operations:

[0244] Dedicated measurement configuration for receiving interference;

[0245] According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a measurement report (MR) and quality of service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0246] Specifically, transceiver 1300 is used to receive and send data under the control of processor 1310.

[0247] Among them, Figure 13In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1310 and memory represented by memory 1320 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1300 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1330 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0248] The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 can store the data used by the processor 1310 when performing operations.

[0249] Optionally, the processor 1310 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0250] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0251] Optionally, according to one embodiment of the terminal device of this application, the situation where the signal from the neighboring cell interferes with the signal from the serving cell includes:

[0252] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0253] It should be noted that the terminal provided in this embodiment of the invention can implement all the method steps implemented by the method embodiment with the terminal as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0254] This application provides a method and apparatus for avoiding inter-cell interference, which solves the defects of interference caused by co-frequency networking between 5G macro base stations and between indoor base stations and outdoor base stations in the prior art, and improves edge spectrum efficiency, thereby improving the communication rate and performance of edge user equipment.

[0255] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0256] Figure 14 This is one of the structural schematic diagrams of the device for avoiding inter-cell interference provided in the embodiments of this application, such as... Figure 14 As shown in the embodiments of this application, the device for avoiding inter-cell interference is applied to network-side equipment and includes:

[0257] The sending unit 1410 is used to send interference-specific measurement configuration to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal of a neighboring cell interferes with the signal of the serving cell.

[0258] The receiving and processing unit 1420 is configured to receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS, so as to avoid co-channel interference between cells.

[0259] Optionally, according to one embodiment of the apparatus for avoiding inter-cell interference, the situation where the signal from a neighboring cell interferes with the signal of the serving cell includes:

[0260] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0261] Optionally, according to one embodiment of the apparatus for avoiding inter-cell interference, the step of determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes:

[0262] Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained;

[0263] Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells;

[0264] The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources.

[0265] Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

[0266] Optionally, according to one embodiment of the apparatus for avoiding inter-cell interference, the step of classifying the neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cells and the RSRP of the serving cell includes:

[0267] If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

[0268] Optionally, in an embodiment of the apparatus for avoiding inter-cell interference according to this application, determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes:

[0269] The number of Physical Resource Blocks (RPBs) required by the UE is determined based on the QoS.

[0270] Determine whether the second available resource meets the number of physical resource blocks (RPBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

[0271] Optionally, in an embodiment of the apparatus for avoiding inter-cell interference according to this application, determining the number of Physical Resource Blocks (RPBs) required by the UE based on the QoS includes one of the following operations:

[0272] Determine the QoS flow rate of the UE based on the services performed by the UE;

[0273] The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE.

[0274] Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (RPBs) required by the UE.

[0275] Optionally, in an embodiment of the apparatus for avoiding inter-cell interference according to this application, determining the QoS flow rate of the UE based on the service being performed by the UE includes at least one of the following operations:

[0276] When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined.

[0277] If the service being performed by the UE is a non-guaranteed bit-rate (NGBR) stream service, determine the priority bit rate (PBR) of the NGBR stream service and use it as the QoS stream rate; or,

[0278] When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

[0279] Optionally, in an embodiment of the apparatus for avoiding inter-cell interference according to this application, determining whether the second available resource satisfies the number of Physical Resource Blocks (RPBs) required by the UE includes one of the following operations:

[0280] If the number of RPBs required for the uplink channel differs from the number of RPBs required for the downlink channel, the following steps are used to determine whether the second available resource meets the number of physical resource block RPBs required by the UE:

[0281] In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of RPBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (RPBs) required by the UE is determined to be satisfied by the second available resource; or,

[0282] In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (RPBs) required for the uplink channel, and the second available resource also satisfies the number of RPBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (RPBs) required by the UE.

[0283] Optionally, according to one embodiment of the apparatus for avoiding inter-cell interference, the step of sending interference-specific measurement configuration to the user equipment (UE) includes:

[0284] In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

[0285] Figure 15 This is one of the structural schematic diagrams of the device for avoiding inter-cell interference provided in the embodiments of this application, such as... Figure 15 As shown in the embodiment of this application, the device for avoiding inter-cell interference is applied to a terminal device and includes:

[0286] Receiver unit 1510 is used to receive interference-specific measurement configurations;

[0287] The detection and reporting unit 1520 is configured to report a measurement report (MR) and a quality of service (QOS) when a signal from a neighboring cell interferes with the signal of the serving cell, based on the interference-specific measurement configuration; wherein the MR and the QOS are used to determine frequency domain resources for scheduling the UE to avoid co-channel interference between cells.

[0288] Optionally, according to one embodiment of the apparatus for avoiding inter-cell interference, the situation where the signal from a neighboring cell interferes with the signal of the serving cell includes:

[0289] The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

[0290] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0291] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0292] It should be noted that the apparatus provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0293] On the other hand, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing the processor to execute the methods for avoiding inter-cell interference provided in the above embodiments.

[0294] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0295] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0296] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0297] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0298] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0299] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for avoiding inter-cell interference, characterized in that, Applied to network-side devices, including: The interference-specific measurement configuration is issued to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell. Receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid inter-cell co-channel interference (PRB); In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

2. The method for avoiding inter-cell interference according to claim 1, characterized in that, The situations where the signal from a neighboring cell interferes with the signal from the serving cell include: The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

3. The method for avoiding inter-cell interference according to claim 1, characterized in that, The step of determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes: Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained; Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells; The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources. Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

4. The method for avoiding inter-cell interference according to claim 3, characterized in that, The step of classifying neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cell and the RSRP of the serving cell includes: If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

5. The method for avoiding inter-cell interference according to claim 3, characterized in that, The step of determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes: The number of Physical Resource Blocks (PRBs) required by the UE is determined based on the QoS. Determine whether the second available resource meets the number of Physical Resource Blocks (PRBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

6. The method for avoiding inter-cell interference according to claim 5, characterized in that, Determining the number of Physical Resource Blocks (PRBs) required by the UE based on the QoS includes one of the following operations: Determine the QoS flow rate of the UE based on the services performed by the UE; The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE. Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (PRBs) required by the UE.

7. The method for avoiding inter-cell interference according to claim 6, characterized in that, Determining the QoS flow rate of the UE based on the services performed by the UE includes at least one of the following operations: When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined. When the service being performed by the UE is a non-guaranteed bit NGBR stream service, the rate of the priority bit rate PBR of the NGBR stream service and the rate of the QoS stream rate are determined. When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

8. The method for avoiding inter-cell interference according to any one of claims 1 to 7, characterized in that, The process of sending interference-specific measurement configuration to the user equipment (UE) includes: In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

9. A method for avoiding inter-cell interference, characterized in that, Applied to terminal equipment (UE), including: Dedicated measurement configuration for receiving interference; According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a Measurement Report (MR) and Quality of Service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid inter-cell co-channel interference (PRB). In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

10. The method for avoiding inter-cell interference according to claim 9, characterized in that, The situations where the signal from a neighboring cell interferes with the signal from the serving cell include: The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

11. A network-side device, comprising a memory, a transceiver, and a processor, characterized in that: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: The interference-specific measurement configuration is issued to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell. Receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS to avoid inter-cell co-channel interference (PRB); In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

12. The network-side device according to claim 11, characterized in that, The situations where the signal from a neighboring cell interferes with the signal from the serving cell include: The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

13. The network-side device according to claim 11, characterized in that, The step of determining the frequency domain resources for scheduling the UE based on the MR and the QoS includes: Based on the MR, the reference received power (RSRP) of the neighboring cell and the RSRP of the serving cell are obtained; Based on the RSRP of the neighboring cell and the RSRP of the serving cell, the neighboring cells are divided into high-interference neighboring cells and / or low-interference neighboring cells; The remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells are identified as the first available resources, and the remaining available resources after avoiding the use of the main frequency resources of the high-interference neighboring cells and the low-interference neighboring cells are identified as the second available resources. Based on the first available resource, the second available resource, and the QoS, determine the frequency domain resources used to schedule the UE.

14. The network-side device according to claim 13, characterized in that, The step of classifying neighboring cells into high-interference neighboring cells and / or low-interference neighboring cells based on the RSRP of the neighboring cell and the RSRP of the serving cell includes: If the RSRP of the neighboring cell is greater than a first threshold, or if the difference between the RSRP of the neighboring cell and the RSRP of the serving cell is greater than a second threshold, the neighboring cell is classified as a high-interference neighboring cell; otherwise, the neighboring cell is classified as a low-interference neighboring cell.

15. The network-side device according to claim 13, characterized in that, The step of determining the frequency domain resources for scheduling the UE based on the first available resource, the second available resource, and the QoS includes: The number of Physical Resource Blocks (PRBs) required by the UE is determined based on the QoS. Determine whether the second available resource meets the number of Physical Resource Blocks (PRBs) required by the UE. If it does, determine the frequency domain resource used to schedule the UE as the second available resource; otherwise, determine the frequency domain resource used to schedule the UE as the first available resource.

16. The network-side device according to claim 15, characterized in that, Determining the number of Physical Resource Blocks (PRBs) required by the UE based on the QoS includes one of the following operations: Determine the QoS flow rate of the UE based on the services performed by the UE; The MCS of the UE is determined based on the Channel Quality Indicator (CQI) reported by the UE, or the empirical value of the Modulation and Coding Style (MCS) used by the edge UE. Based on the MCS and the QoS flow rate, determine the number of Physical Resource Blocks (PRBs) required by the UE.

17. The network-side device according to claim 16, characterized in that, Determining the QoS flow rate of the UE based on the services performed by the UE includes at least one of the following operations: When the service being performed by the UE is a Guaranteed Bit Rate (GFBR) stream service, the Guaranteed Bit Rate (GFBR) of the GBR stream service and the QoS stream rate are determined. When the service being performed by the UE is a non-guaranteed bit NGBR stream service, the rate of the priority bit rate PBR of the NGBR stream service and the rate of the QoS stream rate are determined. When the service being performed by the UE is a concurrent GBR and NGBR service, the sum of the GFBR rate and the PBR rate of the concurrent GBR and NGBR service is determined as the QoS flow rate.

18. The network-side device according to any one of claims 11 to 17, characterized in that, The process of sending interference-specific measurement configuration to the user equipment (UE) includes: In the first Radio Resource Control (RRC) reconfiguration message of the UE, an interference-specific measurement configuration is sent to the UE.

19. A terminal device (UE), comprising a memory, a transceiver, and a processor, characterized in that: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Dedicated measurement configuration for receiving interference; According to the interference-dedicated measurement configuration, when the signal from a neighboring cell interferes with the signal from the serving cell, a Measurement Report (MR) and Quality of Service (QOS) are reported; wherein the MR and the QOS are used to determine the frequency domain resources for scheduling the UE to avoid inter-cell co-channel interference (PRB). In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

20. The terminal device UE according to claim 19, characterized in that, The situations where the signal from a neighboring cell interferes with the signal from the serving cell include: The reference signal received power (RSRP) of the neighboring cell is higher than that of the serving cell, and the difference between the RSRP of the neighboring cell and the serving cell is lower than the threshold for triggering event A3.

21. A device for avoiding inter-cell interference, characterized in that, Applied to network-side devices, including: The sending unit is used to send interference-specific measurement configuration to the user equipment (UE); wherein the interference-specific measurement configuration is used to trigger the UE to report a measurement report (MR) and a quality of service (QOS) when the signal from a neighboring cell interferes with the signal from the serving cell. A receiving and processing unit is configured to receive the MR and the QoS, and determine the frequency domain resources for scheduling the UE based on the MR and the QoS, so as to avoid inter-cell co-channel interference (PRB). In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

22. A device for avoiding inter-cell interference, characterized in that, Applied to terminal equipment (UE), including: The receiving unit is used to receive interference-specific measurement configurations; The detection and reporting unit is configured to report a Measurement Report (MR) and Quality of Service (QOS) when a signal from a neighboring cell interferes with the signal of the serving cell, based on the interference-specific measurement configuration; wherein the MR and the QOS are used to determine frequency domain resources for scheduling the UE to avoid inter-cell co-channel interference (PRB). In the case of a time-division duplex (TDD) communication system, if the second available resource satisfies the largest number of PRBs required by the uplink channel and the downlink channel, then the number of physical resource blocks (PRBs) required by the UE is determined to be satisfied by the second available resource. In the case of a frequency division duplex (FDD) communication system, if the second available resource satisfies the number of physical resource blocks (PRBs) required for the uplink channel and also satisfies the number of PRBs required for the downlink channel, then it is determined that the second available resource satisfies the number of physical resource blocks (PRBs) required by the UE. The second available resource is the remaining available resource after avoiding the use of the main frequency resources of high-interference neighboring cells and low-interference neighboring cells.

23. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program that causes the processor to perform the method according to any one of claims 1 to 8, or to perform the method according to any one of claims 9 to 10.

Images