WO2012079337A1 - Inter-cell interference coordination method and device in heterogeneous network - Google Patents
Inter-cell interference coordination method and device in heterogeneous network Download PDFInfo
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- WO2012079337A1 WO2012079337A1 PCT/CN2011/074583 CN2011074583W WO2012079337A1 WO 2012079337 A1 WO2012079337 A1 WO 2012079337A1 CN 2011074583 W CN2011074583 W CN 2011074583W WO 2012079337 A1 WO2012079337 A1 WO 2012079337A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W16/14—Spectrum sharing arrangements between different networks
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- the present invention relates to wireless communication technologies, and more particularly to a method and apparatus for inter-cell interference coordination in a heterogeneous network. Background technique
- the object of the present invention is to propose an interference coordination method and apparatus in a heterogeneous network to reduce inter-cell interference.
- a method for coordinating interference in a heterogeneous network comprising: setting a restricted interference source selection threshold and a interference contrast threshold according to a set parameter of a restricted interference source selected by a base station and a interference contrast threshold; measuring neighboring cell interference and The interference measurement value is reported to the base station; the base station compares the interference measurement value with When the interference measurement value is greater than the threshold value, the base station determines the interference coordination strategy according to the comparison result of the interference measurement value of the different types of base stations and users in the heterogeneous network and the interference contrast threshold.
- the method further includes: the base station compares the interference measurement value with the restricted interference source to select a threshold, and selects different types of base stations and users that are greater than the threshold as the restricted interference source.
- the method further includes: the base station selecting the physical cell identifier according to the restricted interference source, and maintaining the orthogonality with the physical cell identifiers of all the base stations and the UE in the restricted interference source.
- the method further includes: changing, by the different types of base stations and the UE in the heterogeneous network, the physical cell identifier according to the new policy, reallocating resources, and adjusting the transmit power.
- the method further includes: setting different thresholds and interferences for different types of base stations and UEs in the heterogeneous network to set a new restricted interference source Contrast the threshold.
- the present invention also provides an interference coordination apparatus in a heterogeneous network, where the apparatus includes a setting unit, a measuring unit, a comparing unit, and a determining unit, where:
- the setting unit is configured to set a limited interference source selection threshold and a interference contrast threshold according to the selected parameter of the selected interference source selection threshold and the interference contrast threshold;
- the measuring unit is configured to measure the interference of the neighboring cell, and report the interference measurement value to the comparing unit;
- the comparing unit is configured to compare the interference measurement value with the interference contrast threshold
- the determining unit is configured to determine an interference coordination strategy according to a comparison result between interference measurement values of different types of base stations and UEs and interference contrast thresholds in the heterogeneous network when the measured value is greater than the threshold.
- the apparatus further includes a selecting unit, configured to compare the interference measurement value with the restricted interference source selection threshold, and select different types of base stations and users that are greater than the threshold as the restricted interference source. Further, the determining unit is further configured to select a physical cell identifier according to the restricted interference source, and keep orthogonal to the physical cell identifiers of all base stations and clients in the restricted interference source.
- the determining unit is further configured to change the physical cell identifier according to the new interference coordination policy, reallocate the resource, and adjust the transmit power.
- the setting unit is further configured to set a new restricted interference source selection threshold and an interference contrast threshold.
- the technical solution of the present invention significantly reduces different types of base stations and user detectable areas in a heterogeneous network in physical cell identity allocation and identification by setting a restricted interference source.
- the collision probability of the inner physical cell identifier, and the characteristics of different types of base stations in the heterogeneous network are considered in the small-interval interference coordination, and different interference coordination strategies are determined, which effectively reduces inter-cell interference.
- FIG. 1 is a schematic flowchart of an interference coordination method in a heterogeneous network according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of an interference coordination apparatus in a heterogeneous network according to an embodiment of the present invention.
- the technical solution of the present invention is directed to a physical inter-cell interference coordination method and apparatus based on a restricted interference source.
- the UE measures the interference situation of the neighboring cell base station, for example, measures the interference signal strength, The path loss is reported to the base station; the base station selects a threshold according to the user-set restricted interference source, and the threshold can be set according to the information such as the measured interference signal strength and the path loss; the base station compares the interference measurement value with the threshold value, Determining different types of base stations and restricted interference sources of the user end in the heterogeneous network; the base station determines the physical cell identifiers of different types of base stations and users in the heterogeneous network according to the restricted interference source, and maintains orthogonality, that is, the physical cell There is no conflict in the identity; different types of base stations in a heterogene
- the setting of the restricted interference source significantly reduces the collision probability of different types of base stations in the heterogeneous network in the physical cell identity allocation and identification and the physical cell identifier in the detectable area of the UE.
- inter-cell interference coordination considering the characteristics of different types of base stations in heterogeneous networks, different interference coordination strategies are determined, which effectively reduces inter-cell interference.
- the restricted interference source and the physical cell identifier can be static, semi-static, semi-dynamic, and dynamic, to meet the performance requirements of different types of base stations and users in the heterogeneous network. Different types of base stations in a heterogeneous network can set different interference contrast thresholds or use multiple thresholds according to their own performance to meet the demand.
- the strategy of physical cell identification, reallocation of different resources, and adjustment of transmit power in small-interval interference coordination may be used alone or in combination of several or all of the strategies to adjust to interference to meet the interference threshold.
- Different types of base stations in a heterogeneous network can set different restricted interference source selection thresholds or use multiple thresholds to meet the demand.
- FIG. 1 it is a schematic flowchart of an interference coordination method in a heterogeneous network according to an embodiment of the present invention, which includes the following steps:
- the base station selects a set parameter of the limited interference source selection threshold value and the interference contrast threshold value, such as measuring the interference signal strength, the path loss, and the like;
- S102 The base station sets a restricted interference source selection threshold according to the selected parameter.
- S103 The base station sets the interference contrast threshold according to the selected parameter.
- S104 The neighboring cell interference is measured by different types of base stations and UEs in the heterogeneous network, and the interference measurement value is reported to the base station;
- the base station compares the interference measurement value with the restricted interference source to select a threshold, and selects greater than the Different types of base stations and subscribers of wide value as restricted interference sources;
- the base station selects a physical cell identifier according to the restricted interference source, and keeps the physical cell identifier orthogonal to all the base stations and the user end in the restricted interference source;
- the base station compares the interference measurement value with the interference contrast threshold, when the measured value is greater than the threshold, go to step S108, otherwise, go to step S110;
- the base station determines an interference coordination strategy according to a comparison result between interference measurement values of different types of base stations and users in the heterogeneous network and interference contrast threshold values;
- S109 Different types of base stations and UEs in the heterogeneous network change the physical cell identifier according to the new interference coordination policy, reallocate resources, and adjust the transmit power.
- FIG. 2 it is an architectural schematic of an interference coordination apparatus in a heterogeneous network according to an embodiment of the present invention, which includes a setting unit, a measuring unit, a comparing unit, and a determining unit, and further includes a selecting unit. among them,
- the setting unit is configured to: after selecting a setting parameter of the limited interference source selection threshold and the interference contrast threshold, setting a limited interference source selection threshold according to the selected parameter; and further configured to set the interference contrast threshold according to the selected parameter; And, the different types of base stations and the UEs in the heterogeneous network in the S110 in the foregoing method embodiment set a new restricted interference source selection threshold and a interference contrast threshold.
- the measuring unit is configured to measure neighboring cell interferences of different types of base stations and UEs in the heterogeneous network, and report the interference measurement values to the comparing unit.
- the comparing unit is configured to compare the interference measurement value with the limited interference source selection threshold, and is further configured to select different types of base stations and users that are greater than the threshold as the restricted interference source.
- the selection unit is configured to compare the interference measurement value with the restricted interference source selection threshold, and select different types of base stations and users that are larger than the threshold as the restricted interference source.
- the determining unit is configured to perform interference according to different types of base stations and user terminals in a heterogeneous network
- the determining unit is further configured to select a physical cell identifier according to the restricted interference source, and keep orthogonal to the physical cell identifiers of all base stations and clients in the restricted interference source.
- the determining unit is further configured to change the physical cell identifier according to the new interference coordination policy, reallocate the resources, and adjust the transmit power.
- the setting unit, the measuring unit and the determining unit are located on the base station side and the user side, and the comparing unit and the selecting unit are located on the base station side.
- the technical solution of the present invention significantly reduces the collision probability of different types of base stations and physical cell identifiers in the detectable area of the heterogeneous network in the heterogeneous network in the physical cell identity allocation and identification by setting the restricted interference source, and the small interval interference coordination Considering the characteristics of different types of base stations in a heterogeneous network, different interference coordination strategies are determined, which effectively reduces inter-cell interference.
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Abstract
Description
一种异构网络中小区间干扰协调方法及装置 技术领域 Method and device for coordinating inter-cell interference in heterogeneous network
本发明涉及无线通信技术， 更具体地， 涉及一种异构网络中小区间干 扰协调方法及装置。 背景技术 The present invention relates to wireless communication technologies, and more particularly to a method and apparatus for inter-cell interference coordination in a heterogeneous network. Background technique
在下一代的宽带无线通信网络中， 解决无线通信网络中如何在当前无 线通信系统中的带宽下支持更大的带宽， 成为提高小区间用户端吞吐量及 用户端平均吞吐量的一个关键因素并面临严峻的挑战。 In the next generation of broadband wireless communication networks, solving how wireless communication networks support larger bandwidths in the bandwidth of current wireless communication systems is a key factor for improving inter-cell user throughput and average throughput of users. Faced with severe challenges.
目前， 在第三代合作伙伴计戈' J ( The 3rd Generation Partnership Project, 3GPP )的长期演进（Long Term Evolution, LTE )技术中， 特别是在异构网 络中， 由于存在不同类型的基站 （BS ) , 这些基站具有不同的自身性能， 诸如发射功率、 吞吐量、 峰值速率、 负载状况等都可能会不同， 为物理小 区标识的分配带来的难度， 特别是在不同类型的基站数量较大时， 会给物 理小区标识的分配中冲突的避免带来很大的难度， 同时， 由于不同类型的 基站都有各自的覆盖区域， 也给小区间干扰协调带来严峻的挑战。 发明内容 Currently, in the 3rd generation partner Long Term Evolution (LTE) technology of the 3rd Generation Partnership Project (3GPP), especially in heterogeneous networks, there are different types of base stations (BS). These base stations have different self-performances, such as transmit power, throughput, peak rate, load status, etc., which may cause difficulties in the allocation of physical cell identifiers, especially when the number of different types of base stations is large. It will bring great difficulty to avoid conflicts in the allocation of physical cell identifiers. At the same time, since different types of base stations have their own coverage areas, it also brings severe challenges to inter-cell interference coordination. Summary of the invention
有鉴于此， 本发明的目的是提出一种异构网络中干扰协调方法及装置， 以降低小区间干扰。 In view of this, the object of the present invention is to propose an interference coordination method and apparatus in a heterogeneous network to reduce inter-cell interference.
为解决上述技术问题， 本发明的技术方案是这样实现的： In order to solve the above technical problem, the technical solution of the present invention is implemented as follows:
一种异构网络中干扰协调方法， 包括： 根据基站选择的受限干扰源选 择阔值和干扰对比阔值的设置参数设置受限干扰源选择阔值和干扰对比阔 值； 测量邻小区干扰并将干扰测量值上报给基站； 基站对比干扰测量值与 干扰对比阔值， 当干扰测量值大于所述阔值时， 基站根据异构网络中的不 同类型的基站和用户端的干扰测量值与干扰对比阔值的对比结果确定干扰 协调策略。 A method for coordinating interference in a heterogeneous network, comprising: setting a restricted interference source selection threshold and a interference contrast threshold according to a set parameter of a restricted interference source selected by a base station and a interference contrast threshold; measuring neighboring cell interference and The interference measurement value is reported to the base station; the base station compares the interference measurement value with When the interference measurement value is greater than the threshold value, the base station determines the interference coordination strategy according to the comparison result of the interference measurement value of the different types of base stations and users in the heterogeneous network and the interference contrast threshold.
进一步地， 所述方法还包括： 基站对比干扰测量值与受限干扰源选择 阔值， 并选择大于阔值的不同类型基站和用户端作为受限干扰源。 Further, the method further includes: the base station compares the interference measurement value with the restricted interference source to select a threshold, and selects different types of base stations and users that are greater than the threshold as the restricted interference source.
进一步地， 所述方法还包括： 基站根据受限干扰源选择物理小区标识， 并保持与受限干扰源内的所有基站、 用户端的物理小区标识正交。 Further, the method further includes: the base station selecting the physical cell identifier according to the restricted interference source, and maintaining the orthogonality with the physical cell identifiers of all the base stations and the UE in the restricted interference source.
进一步地， 所述确定干扰协调策略之后， 进一步包括： 异构网络中的 不同类型的基站和用户端根据新的策略变更物理小区标识， 重新分配资源 , 调整发射功率。 Further, after the determining the interference coordination policy, the method further includes: changing, by the different types of base stations and the UE in the heterogeneous network, the physical cell identifier according to the new policy, reallocating resources, and adjusting the transmit power.
进一步地， 如果所述干扰测量值小于干扰对比阔值， 所述确定干扰协 调策略之后， 进一步包括： 异构网络中的不同类型的基站和用户端设置新 的受限干扰源选择阔值、 干扰对比阔值。 Further, if the interference measurement value is smaller than the interference contrast threshold, after determining the interference coordination policy, the method further includes: setting different thresholds and interferences for different types of base stations and UEs in the heterogeneous network to set a new restricted interference source Contrast the threshold.
另外， 本发明还提出一种异构网络中干扰协调装置， 所述装置包括设 置单元、 测量单元、 比较单元和确定单元， 其中： In addition, the present invention also provides an interference coordination apparatus in a heterogeneous network, where the apparatus includes a setting unit, a measuring unit, a comparing unit, and a determining unit, where:
所述设置单元用于根据选择的受限干扰源选择阔值和干扰对比阔值的 设置参数设置受限干扰源选择阔值和干扰对比阔值； The setting unit is configured to set a limited interference source selection threshold and a interference contrast threshold according to the selected parameter of the selected interference source selection threshold and the interference contrast threshold;
所述测量单元用于测量邻小区干扰， 并将干扰测量值上报给所述比较 单元； The measuring unit is configured to measure the interference of the neighboring cell, and report the interference measurement value to the comparing unit;
所述比较单元用于对比干扰测量值与干扰对比阔值； The comparing unit is configured to compare the interference measurement value with the interference contrast threshold;
所述确定单元用于当上述测量值大于阔值时， 才艮据异构网络中的不同 类型的基站和用户端的干扰测量值与干扰对比阔值的对比结果确定干扰协 调策略。 The determining unit is configured to determine an interference coordination strategy according to a comparison result between interference measurement values of different types of base stations and UEs and interference contrast thresholds in the heterogeneous network when the measured value is greater than the threshold.
进一步地， 所述装置还包括选择单元， 用于对比干扰测量值与受限干 扰源选择阔值， 并选择大于阔值的不同类型基站和用户端作为受限干扰源。 进一步地， 所述确定单元进一步用于根据受限干扰源选择物理小区标 识， 并保持与受限干扰源内的所有基站、 用户端的物理小区标识正交。 Further, the apparatus further includes a selecting unit, configured to compare the interference measurement value with the restricted interference source selection threshold, and select different types of base stations and users that are greater than the threshold as the restricted interference source. Further, the determining unit is further configured to select a physical cell identifier according to the restricted interference source, and keep orthogonal to the physical cell identifiers of all base stations and clients in the restricted interference source.
进一步地， 所述确定单元进一步用于根据新的干扰协调策略变更物理 小区标识， 重新分配资源， 调整发射功率。 Further, the determining unit is further configured to change the physical cell identifier according to the new interference coordination policy, reallocate the resource, and adjust the transmit power.
进一步地， 如果所述干扰测量值小于干扰对比阔值， 所述设置单元进 一步用于设置新的受限干扰源选择阔值、 干扰对比阔值。 Further, if the interference measurement value is smaller than the interference contrast threshold, the setting unit is further configured to set a new restricted interference source selection threshold and an interference contrast threshold.
本发明的有益效果： 与现有技术相比较， 本发明技术方案通过对受限 干扰源的设置显著降低了物理小区标识分配与识别中的异构网络中不同类 型的基站及用户端可检测区域内物理小区标识的冲突概率， 小区间干扰协 调中考虑到异构网络中不同类型基站的特性， 确定了不同的干扰协调策略， 有效降低了小区间干扰。 附图说明 Advantageous Effects of the Invention: Compared with the prior art, the technical solution of the present invention significantly reduces different types of base stations and user detectable areas in a heterogeneous network in physical cell identity allocation and identification by setting a restricted interference source. The collision probability of the inner physical cell identifier, and the characteristics of different types of base stations in the heterogeneous network are considered in the small-interval interference coordination, and different interference coordination strategies are determined, which effectively reduces inter-cell interference. DRAWINGS
图 1是本发明实施例异构网络中干扰协调方法的流程示意图； 图 2是本发明实施例异构网络中干扰协调装置的结构示意图。 具体实施方式 1 is a schematic flowchart of an interference coordination method in a heterogeneous network according to an embodiment of the present invention; and FIG. 2 is a schematic structural diagram of an interference coordination apparatus in a heterogeneous network according to an embodiment of the present invention. detailed description
本发明技术方案是针对基于受限干扰源的物理小区间干扰协调方法和 装置。在本发明技术方案中，对于异构网络中的不同类型的基站，诸如 Femto 小区、 家庭基站、 微蜂窝 （Micro Cell )等， 用户端测量邻小区基站的干扰 情况， 例如， 测量干扰信号强度、 路损等， 将干扰测量值上报给基站； 基 站根据用户端设置受限干扰源选择阔值， 该阔值可以根据测量干扰信号强 度、 路损等信息设置； 基站对比干扰测量值与阔值， 确定异构网络中的不 同类型的基站、 用户端的受限干扰源； 基站根据受限干扰源确定异构网络 中的不同类型的基站、 用户端的物理小区标识， 并保持正交， 即， 物理小 区标识没有冲突； 异构网络中的不同类型的基站根据自身性能， 诸如发射 功率、 吞吐量、 峰值速率、 负载状况等， 设置干扰对比阔值； 基站根据异 构网络中的不同类型的基站、 用户端的干扰测量值与干扰对比阔值的对比 结果确定干扰协调策略； 基站的干扰协调策略包括变更异构网络中不同类 型的基站的物理小区标识、 重新分配不同的资源、 调整发射功率， 但不限 于此。 受限干扰源的设置显著降低了物理小区标识分配与识别中的异构网 络中不同类型的基站及用户端可检测区域内物理小区标识的冲突概率。 小 区间干扰协调中考虑到异构网络中不同类型基站的特性， 确定了不同的干 扰协调策略， 有效降低了小区间干扰。 受限干扰源及物理小区标识可以静 态、 半静态、 半动态、 动态配置， 以适应异构网络中不同类型基站、 用户 端性能需求。 异构网络中不同类型的基站根据自身的性能可以设置不同的 干扰对比阔值或釆用多个阔值， 以满足需求。 小区间干扰协调中物理小区 标识、 重新分配不同的资源、 调整发射功率等策略可以单独使用， 也可以 是几个或全部策略的联合使用， 起到调整到干扰满足干扰对比阔值要求。 异构网络中不同类型的基站可以设置不同的受限干扰源选择阔值， 或釆用 多个阔值， 以满足需求。 The technical solution of the present invention is directed to a physical inter-cell interference coordination method and apparatus based on a restricted interference source. In the technical solution of the present invention, for different types of base stations in a heterogeneous network, such as a Femto cell, a home base station, a micro cell, etc., the UE measures the interference situation of the neighboring cell base station, for example, measures the interference signal strength, The path loss is reported to the base station; the base station selects a threshold according to the user-set restricted interference source, and the threshold can be set according to the information such as the measured interference signal strength and the path loss; the base station compares the interference measurement value with the threshold value, Determining different types of base stations and restricted interference sources of the user end in the heterogeneous network; the base station determines the physical cell identifiers of different types of base stations and users in the heterogeneous network according to the restricted interference source, and maintains orthogonality, that is, the physical cell There is no conflict in the identity; different types of base stations in a heterogeneous network are based on their own capabilities, such as transmission Set the interference contrast threshold according to power, throughput, peak rate, load status, etc.; the base station determines the interference coordination strategy according to the comparison between the interference measurement values of different types of base stations and UEs in the heterogeneous network and the interference contrast threshold; The interference coordination strategy includes changing the physical cell identity of different types of base stations in the heterogeneous network, reallocating different resources, and adjusting the transmission power, but is not limited thereto. The setting of the restricted interference source significantly reduces the collision probability of different types of base stations in the heterogeneous network in the physical cell identity allocation and identification and the physical cell identifier in the detectable area of the UE. In the inter-cell interference coordination, considering the characteristics of different types of base stations in heterogeneous networks, different interference coordination strategies are determined, which effectively reduces inter-cell interference. The restricted interference source and the physical cell identifier can be static, semi-static, semi-dynamic, and dynamic, to meet the performance requirements of different types of base stations and users in the heterogeneous network. Different types of base stations in a heterogeneous network can set different interference contrast thresholds or use multiple thresholds according to their own performance to meet the demand. The strategy of physical cell identification, reallocation of different resources, and adjustment of transmit power in small-interval interference coordination may be used alone or in combination of several or all of the strategies to adjust to interference to meet the interference threshold. Different types of base stations in a heterogeneous network can set different restricted interference source selection thresholds or use multiple thresholds to meet the demand.
下面结合附图和具体实施例对本发明技术方案做详细描述。 The technical solutions of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments.
请参考图 1 所示， 是本发明实施例异构网络中干扰协调方法的流程示 意图， 其包括如下步骤： Referring to FIG. 1 , it is a schematic flowchart of an interference coordination method in a heterogeneous network according to an embodiment of the present invention, which includes the following steps:
S101 : 基站选择受限干扰源选择阔值、 干扰对比阔值的设置参数， 如 测量干扰信号强度、 路损等； S101: The base station selects a set parameter of the limited interference source selection threshold value and the interference contrast threshold value, such as measuring the interference signal strength, the path loss, and the like;
S102: 基站根据选择的参数设置受限干扰源选择阔值； S102: The base station sets a restricted interference source selection threshold according to the selected parameter.
S103: 基站根据选择的参数设置干扰对比阔值； S103: The base station sets the interference contrast threshold according to the selected parameter.
S104: 异构网络中不同类型的基站和用户端测量邻小区干扰， 并将干 扰测量值上报基站； S104: The neighboring cell interference is measured by different types of base stations and UEs in the heterogeneous network, and the interference measurement value is reported to the base station;
S105: 基站对比干扰测量值与受限干扰源选择阔值， 并选择大于所述 阔值的不同类型基站和用户端作为受限干扰源； S105: the base station compares the interference measurement value with the restricted interference source to select a threshold, and selects greater than the Different types of base stations and subscribers of wide value as restricted interference sources;
S106: 基站根据受限干扰源选择物理小区标识， 并保持与受限干扰源 内的所有基站、 用户端的物理小区标识正交； S106: The base station selects a physical cell identifier according to the restricted interference source, and keeps the physical cell identifier orthogonal to all the base stations and the user end in the restricted interference source;
S107: 基站对比干扰测量值与干扰对比阔值， 当测量值大于阔值时， 转到步骤 S108, 否则， 转到步骤 S110; S107: the base station compares the interference measurement value with the interference contrast threshold, when the measured value is greater than the threshold, go to step S108, otherwise, go to step S110;
S108: 基站根据异构网络中的不同类型的基站和用户端的干扰测量值 与干扰对比阔值的对比结果确定干扰协调策略； S108: The base station determines an interference coordination strategy according to a comparison result between interference measurement values of different types of base stations and users in the heterogeneous network and interference contrast threshold values;
S109: 异构网络中的不同类型的基站和用户端根据新的干扰协调策略 变更物理小区标识， 重新分配资源， 调整发射功率； S109: Different types of base stations and UEs in the heterogeneous network change the physical cell identifier according to the new interference coordination policy, reallocate resources, and adjust the transmit power.
S110: 异构网络中的不同类型的基站和用户端设置新的受限干扰源选 择阔值、 干扰对比阔值， 并转到步骤 S104重新测量。 S110: Different types of base stations and UEs in the heterogeneous network set a new restricted interference source selection threshold and interference contrast threshold, and go to step S104 to re-measure.
请参考图 2所示， 是本发明实施例异构网络中干扰协调装置的架构示 意图， 其包括设置单元、 测量单元、 比较单元和确定单元， 进一步包括选 择单元。 其中， Referring to FIG. 2, it is an architectural schematic of an interference coordination apparatus in a heterogeneous network according to an embodiment of the present invention, which includes a setting unit, a measuring unit, a comparing unit, and a determining unit, and further includes a selecting unit. among them,
所述设置单元用于当选择受限干扰源选择阔值、 干扰对比阔值的设置 参数后， 根据选择的参数设置受限干扰源选择阈值； 还用于根据选择的参 数设置干扰对比阔值； 以及， 用于上述方法实施例中的 S110中异构网络中 的不同类型的基站和用户端设置新的受限干扰源选择阔值、 干扰对比阔值。 The setting unit is configured to: after selecting a setting parameter of the limited interference source selection threshold and the interference contrast threshold, setting a limited interference source selection threshold according to the selected parameter; and further configured to set the interference contrast threshold according to the selected parameter; And, the different types of base stations and the UEs in the heterogeneous network in the S110 in the foregoing method embodiment set a new restricted interference source selection threshold and a interference contrast threshold.
所述测量单元用于异构网络中不同类型的基站和用户端测量邻小区干 扰， 并将干扰测量值上报给比较单元。 The measuring unit is configured to measure neighboring cell interferences of different types of base stations and UEs in the heterogeneous network, and report the interference measurement values to the comparing unit.
所述比较单元用于对比干扰测量值与受限干扰源选择阔值， 进一步用 于选择大于阔值的不同类型基站和用户端作为受限干扰源。 The comparing unit is configured to compare the interference measurement value with the limited interference source selection threshold, and is further configured to select different types of base stations and users that are greater than the threshold as the restricted interference source.
所述选择单元用于对比干扰测量值与受限干扰源选择阔值， 并选择大 于阔值的不同类型基站和用户端作为受限干扰源。 The selection unit is configured to compare the interference measurement value with the restricted interference source selection threshold, and select different types of base stations and users that are larger than the threshold as the restricted interference source.
所述确定单元用于根据异构网络中的不同类型的基站和用户端的干扰 所述确定单元进一步用于根据受限干扰源选择物理小区标识， 并保持 与受限干扰源内的所有基站、 用户端的物理小区标识正交。 The determining unit is configured to perform interference according to different types of base stations and user terminals in a heterogeneous network The determining unit is further configured to select a physical cell identifier according to the restricted interference source, and keep orthogonal to the physical cell identifiers of all base stations and clients in the restricted interference source.
所述确定单元进一步用于根据新的干扰协调策略变更物理小区标识， 重新分配资源， 调整发射功率。 The determining unit is further configured to change the physical cell identifier according to the new interference coordination policy, reallocate the resources, and adjust the transmit power.
根据上述装置的描述可见， 所述设置单元、 测量单元和确定单元位于 基站侧和用户端侧， 所述比较单元和选择单元位于基站侧。 It can be seen from the description of the above device that the setting unit, the measuring unit and the determining unit are located on the base station side and the user side, and the comparing unit and the selecting unit are located on the base station side.
本发明技术方案通过对受限干扰源的设置显著降低了物理小区标识分 配与识别中的异构网络中不同类型的基站及用户端可检测区域内物理小区 标识的冲突概率， 小区间干扰协调中考虑到异构网络中不同类型基站的特 性， 确定了不同的干扰协调策略， 有效降低了小区间干扰。 The technical solution of the present invention significantly reduces the collision probability of different types of base stations and physical cell identifiers in the detectable area of the heterogeneous network in the heterogeneous network in the physical cell identity allocation and identification by setting the restricted interference source, and the small interval interference coordination Considering the characteristics of different types of base stations in a heterogeneous network, different interference coordination strategies are determined, which effectively reduces inter-cell interference.
当然， 本发明还可有多种实施方式， 在不背离本发明精神及其实质的 但凡在本发明的精神和原则之内所作的任何修改、 等同替换、 改进， 均应 包含在本发明的保护范围之内。 The invention may, of course, be embodied in a variety of embodiments, and any modifications, equivalents, and improvements made within the spirit and scope of the invention are intended to be included in the protection of the invention. Within the scope.
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