WO2013127140A1

WO2013127140A1 - Method and device for managing interference in heterogeneous network

Info

Publication number: WO2013127140A1
Application number: PCT/CN2012/077021
Authority: WO
Inventors: 魏巍
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-03-02
Filing date: 2012-06-15
Publication date: 2013-09-06
Also published as: CN102625336B; CN102625336A

Abstract

Disclosed are a method and device for managing interference in a heterogeneous network. The method comprises: respectively determining the RSRQs of a base station and a low-power node; comparing the ratio of the RSRQ of the base station to the RSRQ of the low-power node with a preset threshold; and performing interference management on UE according to a comparison result. The present invention can significantly reduce interference among cells on the premise of guaranteeing the communication quality of the base station and the low-power node through resource allocation, power control and control channel configuration, guarantee the support to backward compatible/non-backward compatible UE through the setting of all the RE control channel information on a main/auxiliary carrier; implement new UE cell selection and handover policies through the reference values of the RSRQs of the base station and the low-power node so as to avoid the significant reduction of subsidiary (or service) UE of the low-power node; and solve the problem of interference among cells caused by that effective power control cannot be performed when the resource units of control channels are spread all over the whole system bandwidth in an RSRQ weighted manner.

Description

异构网络中干扰管理方法及装置技术领域 Interference management method and device in heterogeneous network

本发明涉及干扰管理技术，尤其涉及一种异构网络中干扰管理方法及装置。背景技术 The present invention relates to interference management technologies, and in particular, to a method and apparatus for interference management in a heterogeneous network. Background technique

在下一代宽带无线通信网络中，如何支持更大带宽成为提高小区间用户终端吞吐量及用户终端平均吞吐量的关键因素。 In the next generation of broadband wireless communication networks, how to support larger bandwidths is a key factor in improving the throughput of inter-cell user terminals and the average throughput of user terminals.

目前，在第三代合作伙伴计划的长期演进（ LTE, Long Term Evolution ) ***中提出采用载波聚合的方式支持更大的带宽，以满足新一代无线标准中对吞吐量、峰值速率等指标的需求。载波聚合是未来无线通信***中支持更大带宽的关键技术，其通过对不同的载波进行聚合，形成更大带宽的载波，在聚合后的带宽上支持具有更强能力的用户设备（ UE , User Equipment )。例如增强型长期演进（ LTE-Advanced , Long Term Evolution-Advanced ) ***中支持超过 100 MHz的带宽。 At present, in the Long Term Evolution (LTE) system of the 3rd Generation Partnership Project, carrier aggregation is proposed to support larger bandwidth to meet the requirements of throughput, peak rate and other indicators in the new generation wireless standard. . Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems. It aggregates different carriers to form a carrier with a larger bandwidth, and supports more powerful user equipments on the aggregated bandwidth (UE, User Equipment ). For example, the Long Term Evolution-Advanced (LTE-Advanced) system supports bandwidths exceeding 100 MHz.

基于载波聚合的异构网络***中 , 干扰管理面临三个重要问题： In heterogeneous network systems based on carrier aggregation, interference management faces three important issues:

( 1 )异构网络中，低功率节点主要是指诸如射频拉远节点（RRH , Remote Radio Head ), Pico小区节点、家庭基站、中继节点等发射功率比宏基站显著低的网络节点。对于室外部署场景比宏基站低 9-26dB , 对于室内部署场景比宏基站低 26dB , 因此，低功率节点服务的 UE将受到与其覆盖区域重叠的宏小区的严重干扰； (1) In a heterogeneous network, a low-power node mainly refers to a network node such as a radio remote node (RRH), a Pico cell node, a home base station, and a relay node, which have significantly lower transmission power than a macro base station. The outdoor deployment scenario is 9-26 dB lower than the macro base station, and the indoor deployment scenario is 26 dB lower than the macro base station. Therefore, the UE served by the low power node will be seriously interfered by the macro cell overlapping with its coverage area;

( 2 ) 目前，典型的异构网络中，小区选择与接入的规则是， UE 附属 (或服务）于最强的服务信号小区即具有最强的接收信号强度的小区。由于低功率节点发射功率非常低，因此，将使 UE优先选择、接入到宏小区，从而使低功率节点附属（或服务）的 UE显著减少，进而使服务区域显著降低； (2) At present, in a typical heterogeneous network, the rule of cell selection and access is that the UE attaches (or services) to the strongest service signal cell, that is, the cell with the strongest received signal strength. Since the low power node has very low transmit power, the UE will be preferentially selected and accessed to the macro cell. Thereby significantly reducing the number of UEs attached to (or serving) the low power node, thereby significantly reducing the service area;

( 3 )传统的干扰管理或避免方法与策略不能被应用于控制信道，主要原因是，形成控制信道的资源单元（RE, Resource Element ) (也就是物理控制格式标识信道（PCFICH, Physical Control Format Indicator CHannel ), 物理下行链路控制信道（ PDCCH, Physical Downlink Control CHannel ), 物理 HARQ指示信道 ( PHICH, Physical Hybrid- ARQ Indicator CHannel ) )遍布全部***带宽。 (3) The traditional interference management or avoidance method and strategy cannot be applied to the control channel. The main reason is that the resource element (RE, Resource Element) forming the control channel (that is, the Physical Control Format Indicator (PCFICH) The physical downlink control channel (PDCCH, Physical Downlink Control CHannel) and the Physical Hybrid-ARQ Indicator CHannel (CHICH) are distributed over the entire system bandwidth.

目前尚无解决上述的技术问题的相关技术方案。发明内容 There is currently no technical solution to solve the above technical problems. Summary of the invention

有鉴于此，本发明的主要目的在于提供一种异构网络中干扰管理方法及装置，能根据当前的信道质量状况通知 UE进行较佳的小区选择与切换、为基站及低功率节点进行资源与功率分配或控制信道信息承载。 In view of the above, the main objective of the present invention is to provide a method and a device for managing interference in a heterogeneous network, which can notify the UE to perform better cell selection and handover according to the current channel quality condition, and perform resource and base station and low power nodes. Power allocation or control channel information bearer.

为达到上述目的，本发明的技术方案是这样实现的：一种异构网络中干扰管理方法，包括： To achieve the above objective, the technical solution of the present invention is implemented as follows: A method for managing interference in a heterogeneous network, comprising:

分别确定基站、低功率节点的 RSRQ, 将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较，根据比较结果对用户设备 UE进行干扰管理。 The RSRQ of the base station and the low-power node are respectively determined, and the RSRQ ratio of the base station and the RSRQ ratio of the low-power node are compared with a set threshold, and the user equipment UE is subjected to interference management according to the comparison result.

优选地，所述分别确定基站、低功率节点的 RSRQ, 为： Preferably, the determining the RSRQ of the base station and the low power node respectively is:

分别确定基站、低功率节点的 RSRP及 RSSI, 还分别确定基站、低功率节点的 RSRP与 RSSI 的比值，将所述比值与传输所需要的物理资源块 PRB总数 N_ras的积分别作为基站、低功率节点的 RSRQ。 Determining the RSRP and RSSI of the base station and the low-power node respectively, and determining the ratio of the RSRP to the RSSI of the base station and the low-power node respectively, and using the ratio of the ratio and the total number of physical resource blocks PRB required by the transmission, N _ras as the base station, respectively. The RSRQ of the power node.

优选地，确定基站、低功率节点的 RSRP, 为： Preferably, determining the RSRP of the base station and the low power node is:

分别确定基站、低功率节点的接收带宽内两个时隙上的小区参考信号的所有资源单元 RE接收功率的线性平均值/^ , 以及分别获取所述 UE上报的路损 PL, 以/^和 PL的积分别作为基站、低功率节点的 RSRP; Determining cell reference signals on two time slots in the receiving bandwidth of the base station and the low power node, respectively All the resource units RE receive the linear average of the power / ^, and respectively obtain the path loss PL reported by the UE, and the product of /^ and PL respectively serve as the RSRP of the base station and the low power node;

确定基站、低功率节点的 RSSI, 为： Determine the RSSI of the base station and the low power node as:

分别确定基站、低功率节点的接收带宽内两个时隙上 PRB的平均发射功率 P_PRB , 将 ^、 N_PRB、 PL作连积后，与 PRB中的 OFDM符号数 N 。,作商，将商值分别作为基站、低功率节点的 RSSI。 The average transmit power P _{PRB of the PRBs} in the two slots in the receiving bandwidth of the base station and the low power node are respectively determined, and the number of OFDM symbols in the PRB is concatenated by ^, N _PRB and PL. As the quotient, the quotient is taken as the RSSI of the base station and the low power node.

优选地，所述方法还包括：对、进行加权归一化处理，为：

、Preferably, the method further includes: performing weighted normalization processing on:

,

P_PRB =∑(d(i)xP_PRB(i))/N ,其中， Ν为设定时间帧中的时隙总数， (i)、 d (i) 分别为每个时隙中/ ^和的权值； δ (i)、 a (i)根据负载均衡、小区间干扰、覆盖范围调整而设定； P _PRB =∑(d(i)xP _PRB (i))/N , where Ν is the total number of time slots in the set time frame, (i), d (i) are / ^ and in each time slot respectively Weights; δ (i), a (i) are set according to load balancing, small interval interference, and coverage adjustment;

所述分别确定基站、低功率节点的 RSRQ, 为： The determining the RSRQ of the base station and the low power node respectively is:

以加权归一化处理后的、确定基站、低功率节点的 RSRQ。 The RSRQ of the base station and the low power node is determined by the weighted normalization process.

优选地，所述设定阈值包括切换阈值、资源及功率分配阈值；所述干扰管理包括小区选择与切换、资源与功率分配或控制信道信息承载； Preferably, the set threshold includes a handover threshold, a resource and a power allocation threshold; the interference management includes cell selection and handover, resource and power allocation, or control channel information bearer;

所述将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较，根据比较结果对 UE进行干扰管理，为： And comparing the RSRQ ratio of the base station and the RSRQ ratio of the low power node with a set threshold, and performing interference management on the UE according to the comparison result, where:

根据基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值的对比结果以及预先设定的干扰管理策略，确定对应的干扰管理方式。 The corresponding interference management mode is determined according to the comparison result between the RSRQ of the base station and the RSRQ ratio of the low power node and the set threshold and the preset interference management strategy.

优选地，所述干扰管理策略包括： Preferably, the interference management policy includes:

大于切换阈值，进行小区切换； More than the handover threshold, performing cell handover;

小于等于切换阈值而大于第一资源及功率分配阈值时，在载波支持后向兼容时，链路控制信道信息在全部 RE上发送，在载波不支持后向兼容时，链路控制信道信息在主组成载波的全部 RE上发送； When the handover threshold is greater than or equal to the first resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information is sent on all REs, and when the carrier is not supported backward compatible, The link control channel information is sent on all REs of the primary component carrier;

小于等于第一资源及功率分配阈值大于第二资源及功率分配阈值时，在载波支持后向兼容时，链路控制信道信息在全部满功率发射的 RE上发送，在载波不支持后向兼容时，链路控制信道信息在全部满功率发射的主组成载波的全部 RE上发送； When the first resource and the power allocation threshold are greater than the second resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information is sent on all REs of full power transmission, and when the carrier does not support backward compatibility. The link control channel information is sent on all REs of the main component carrier of all full power transmissions;

小于等于第二资源及功率分配阈值大于第三资源及功率分配阈值时，在载波支持后向兼容时，基站的链路控制信道信息在满功率发射的 RE上发送，低功率节点的链路控制信道信息在非满功率发射的 RE上发送；在载波不支持后向兼容时，基站的链路控制信道信息在非满功率发射的 RE上发送，低功率节点的链路控制信道信息在满功率发射的 RE上发送。 When the second resource and the power allocation threshold are greater than the third resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information of the base station is sent on the RE of the full power transmission, and the link control of the low power node is performed. The channel information is transmitted on the RE of the non-full power transmission; when the carrier is not backward compatible, the link control channel information of the base station is transmitted on the RE of the non-full power transmission, and the link control channel information of the low power node is at the full power. The transmitted RE is sent on.

基站或低功率节点的载波资源为正交和 /或准正交时以满功率发射，非正交和 /或正交和 /或准正交时以降低功率发射。 The carrier resources of the base station or low power node are transmitted at full power when orthogonal and/or quasi-orthogonal, non-orthogonal and/or orthogonal and/or quasi-orthogonal to reduce power transmission.

一种异构网络中干扰管理装置，包括确定单元、比较单元和干扰管理单元，其中： An interference management device in a heterogeneous network, comprising a determining unit, a comparing unit and an interference management unit, wherein:

确定单元，分别确定基站、低功率节点的 RSRQ; Determining a unit, respectively determining an RSRQ of the base station and the low power node;

比较单元，用于将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较； a comparing unit, configured to compare a RSRQ ratio of the base station and an RSRQ ratio of the low power node with a set threshold;

干扰管理单元，用于根据比较结果对 UE进行干扰管理。 The interference management unit is configured to perform interference management on the UE according to the comparison result.

优选地，所述确定单元还用于，分别确定基站、低功率节点的 RSRP 及 RSSI, 还分别确定基站、低功率节点的 RSRP与 RSSI的比值，将所述比值与传输所需要的 PRB 总数 N^的积分别作为基站、低功率节点的 RSRQ₀ Preferably, the determining unit is further configured to determine a RSRP and an RSSI of the base station and the low power node, respectively, and determine a ratio of the RSRP to the RSSI of the base station and the low power node, respectively, and the ratio and the total number of PRBs required for the transmission. The product of ^ is used as the base station, low power node RSRQ ₀

优选地，所述确定单元还用于，分别确定基站、低功率节点的接收带宽内两个时隙上的小区参考信号的所有 RE接收功率的线性平均值/^ , 以及分别获取所述 UE上报的路损 PL , 以/^和 PL的积分别作为基站、低功率节点的 RSRP; Preferably, the determining unit is further configured to respectively determine a linear average value /^ of all RE receiving powers of the cell reference signals on the two slots in the receiving bandwidth of the base station and the low power node, to Obtaining, respectively, the path loss PL reported by the UE, and the product of /^ and PL respectively as the RSRP of the base station and the low power node;

优选地，所述装置还包括： Preferably, the device further includes:

加权归一化处理单元，用于对、进行加权归一化处理，为：

, 其中， N 为设定时间帧中的时隙总数， δ ( i )、 d ( i )分别为每个时隙中/ ^和的权值； δ ( i )、 d ( i )根据负载均衡、小区间干扰、覆盖范围调整而设定； A weighted normalization processing unit for performing weighted normalization processing, which is:

Where N is the total number of time slots in the set time frame, δ ( i ), d ( i ) are the weights of / ^ and in each time slot respectively; δ ( i ), d ( i ) are based on load balancing , small interval interference, coverage adjustment and setting;

所述确定单元还用于，以加权归一化处理后的、确定基站、低功率节点的 RSRQ。 The determining unit is further configured to determine the RSRQ of the base station and the low power node after the weighted normalization process.

所述干扰管理单元还用于，根据基站的 RSRQ和低功率节点的 RSRQ 扰管理方式。 The interference management unit is further configured to: according to the RSRQ of the base station and the RSRQ interference management mode of the low power node.

小于等于切换阈值而大于第一资源及功率分配阈值时，在载波支持后向兼容时，链路控制信道信息在全部 RE上发送，在载波不支持后向兼容时，链路控制信道信息在主组成载波的全部 RE上发送； When the handover threshold is greater than or equal to the first resource and the power allocation threshold, the link control channel information is transmitted on all REs when the carrier is backward compatible, and the link control channel information is in the main when the carrier is not supported backward compatible. Sending on all REs that make up the carrier;

小于等于第一资源及功率分配阈值大于第二资源及功率分配阈值时，在载波支持后向兼容时，链路控制信道信息在全部满功率发射的 RE上发送，在载波不支持后向兼容时，链路控制信道信息在全部满功率发射的主组成载波的全部 RE上发送； When the first resource and the power allocation threshold are greater than the second resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information is sent on all REs of full power transmission. Send, when the carrier does not support backward compatibility, the link control channel information is sent on all REs of the main component carrier of all full power transmission;

小于等于第二资源及功率分配阈值大于第三资源及功率分配阈值时，在载波支持后向兼容时，基站的链路控制信道信息在满功率发射的 RE上发送，低功率节点的链路控制信道信息在非满功率发射的 RE上发送；在载波不支持后向兼容时，基站的链路控制信道信息在非满功率发射的 RE上发送，低功率节点的链路控制信道信息在满功率发射的 RE上发送； When the second resource and the power allocation threshold are greater than the third resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information of the base station is sent on the RE of the full power transmission, and the link control of the low power node is performed. The channel information is transmitted on the RE of the non-full power transmission; when the carrier is not backward compatible, the link control channel information of the base station is transmitted on the RE of the non-full power transmission, and the link control channel information of the low power node is at the full power. Transmitted on the transmitted RE;

和 /或，基站或低功率节点的载波资源为正交和 /或准正交时以满功率发射，非正交和 /或正交和 /或准正交时以降低功率发射。 And/or, the carrier resources of the base station or the low power node are transmitted at full power when orthogonal and/or quasi-orthogonal, non-orthogonal and/or orthogonal and/or quasi-orthogonal to reduce power transmission.

本发明中，分别确定基站（BS, Base Station )、低功率节点的参考信号接收质量（RSRQ, Reference Signal Receiving Quality ), 将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较，根据比较结果对用户设备 UE进行干扰管理。本发明的干扰管理包括小区选择与切换、资源与功率分配或控制信道信息承载；根据基站的 RSRQ和低功率节点的 RSRQ比值与方式。 In the present invention, the reference signal reception quality (RSRQ, Reference Signal Receiving Quality) of the base station (BS, Base Station) and the low power node are respectively determined, and the RSRQ ratio of the base station and the RSRQ ratio of the low power node are compared with a set threshold, according to The comparison result performs interference management on the user equipment UE. The interference management of the present invention includes cell selection and handover, resource and power allocation or control channel information bearer; RSRQ ratio and mode according to the RSRQ of the base station and the low power node.

本发明通过资源分配、功率控制、控制信道的配置，能够在确保基站和低功率节点通信质量的前提下，显著降低小区间的干扰；通过对主 /辅载波上所有 RE控制信道信息的设置，保证了对于后向兼容 /非后向兼容 UE 的支持；通过基站、低功率节点的 RSRQ参考值实施新的 UE小区选择与切换策略，避免了低功率节点附属（或服务）的 UE显著减少；通过 RSRQ 加权的方式解决了控制信道的资源单元遍布全部***带宽时无法进行有效的功率控制，进而导致小区间干扰的问题。附图说明 The invention can significantly reduce inter-cell interference under the premise of ensuring the communication quality of the base station and the low-power node by resource allocation, power control, and control channel configuration; and setting the control channel information of all REs on the primary/secondary carrier, Guaranteeing support for backward compatible/non-backward compatible UEs; implementing a new UE cell selection and handover strategy by using RSRQ reference values of base stations and low power nodes, avoiding significant reduction of low power node affiliated (or serving) UEs; The RSRQ weighting method solves the problem that the resource unit of the control channel cannot perform effective power control when the resource unit is spread over the entire system bandwidth, thereby causing inter-cell interference. DRAWINGS

图 1为本发明实施例的异构网络中干扰管理方法的流程图；图 2为本发明实施的异构网络中干扰管理装置的组成结构示意图。具体实施方式 1 is a flowchart of an interference management method in a heterogeneous network according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a structure of an interference management apparatus in a heterogeneous network according to an embodiment of the present invention. detailed description

本发明的基本思想为：分别确定基站、低功率节点的 RSRQ, 将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较，根据比较结果对用户设备 UE进行干扰管理。 The basic idea of the present invention is: determining the RSRQ of the base station and the low power node respectively, comparing the RSRQ ratio of the base station and the RSRQ ratio of the low power node with a set threshold, and performing interference management on the user equipment UE according to the comparison result.

图 1为本发明实施例的异构网络中干扰管理方法的流程图，如图 1所示，本示例的异构网络中干扰管理方法包括以下步驟： 1 is a flowchart of an interference management method in a heterogeneous network according to an embodiment of the present invention. As shown in FIG. 1, the interference management method in a heterogeneous network in this example includes the following steps:

步驟 101 , 分别确定基站、低功率节点的 RSRQ。 Step 101: Determine an RSRQ of the base station and the low power node, respectively.

这里，首先对 RSRQ进行简单介绍。 RSRQ需要通过参考信号接收功率（ RSRP, Reference Signal Receiving Power )和接收信号强度指示（ RSSI, Received Signal Strength Indicator ) 来确定，其中， RSRP为在某个 Symbol 内承载参考信号（ Reference Signal )的所有 RE上接收到的信号功率的平均值，而 RSSI则是在这个 Symbol内接收到的所有信号（包括导频信号和数据信号，邻区干扰信号，噪音信号等）功率的平均值， RSRQ 则是 RSRP 和 RSSI的比值。由于 RSRP和 RSSI在测量时所基于的带宽可能不同，会使用一个系数来调整 RSRP和 RSSI的比值，作为 RSRQ。 Here, the RSRQ is briefly introduced. RSRQ needs to be determined by Reference Signal Receiving Power (RSRP) and Received Signal Strength Indicator (RSI), where RSRP is all REs carrying reference signals ( Reference Signal) within a certain Symbol. The average of the received signal power, and the RSSI is the average of the power of all signals received in the Symbol (including pilot and data signals, neighbor interference signals, noise signals, etc.), and RSRQ is RSRP. The ratio to RSSI. Since the bandwidth on which RSRP and RSSI are based on measurements may be different, a coefficient is used to adjust the ratio of RSRP to RSSI as RSRQ.

以下详细描述本发明实施例的 RSRQ是如何确定的。 How the RSRQ of the embodiment of the present invention is determined is described in detail below.

对于 3GPP LTE, RSRQ可由公式（ 1 )所示的计算公式确定。 For 3GPP LTE, RSRQ can be determined by the calculation formula shown in equation (1).

V = ν χΝ I ly (、 1丄 ) 其中， V 为待确定的参考信号接收质量 RSRQ值，为参考信号接收功率 RSRP, N^为下行传输中所需要的物理资源块（PRB , Physical Resource Block ) 总数， V_RSS1为载波接收信号强度指示 RSSI。 V = ν χΝ I ly (, 1丄) where V is the reference signal received quality RSRQ value to be determined, which is the reference signal received power RSRP, and N^ is the physical resource block required for downlink transmission (PRB, Physical Resource Block) ) Total, V _RSS1 is the carrier received signal strength indicator RSSI.

下述公式（2 )示出了 RSRP的计算公式。 The formula (2) below shows the calculation formula of RSRP.

V_RSRP = P_RS x PL ( 2 ) 其中，为在***接收带宽内，两个时隙上相应的小区参考信号的每个参考信号资源单元 ( RS-RE, Reference Signal Resource Element )接收功率的线性平均。 PL为路损，其中， PL值由 UE测量并上报。 V _RSRP = P _RS x PL ( 2 ) The reference signal resource unit (RS-RE, Reference Signal Resource Element) of the corresponding cell reference signal on the two time slots receives a linear average of the power within the system receiving bandwidth. PL is the path loss, where the PL value is measured and reported by the UE.

公式（ 3 )示出了 V 的计算公式。 Equation (3) shows the formula for calculating V.

V_RSS! = (P_PRB xN_PRBxPL)/N_Symbol ( 3 ) V _RSS! = (P _PRB xN _PRB xPL)/N _Symbol ( 3 )

其中，为在***接收带宽内两个时隙上 PRB平均发射功率； N_Symbol 为每个 PRB上的 OFDM符号数。 Wherein, the average transmit power of the PRB on two time slots within the system reception bandwidth; N _Symbol is the number of OFDM symbols on each PRB.

将公式（2)和（3)代入公式（1)可得： Substituting equations (2) and (3) into equation (1) yields:

V X ) / ( 4 ) V X ) / ( 4 )

考虑到控制信道的 RE遍布全部***带宽，因此，本发明实施例还要对和 «进行加权归一化处理，即分别按下式（5)、（6)分别对上述计算出的、进行相应处理：

Considering that the RE of the control channel spreads over the entire system bandwidth, the embodiment of the present invention also performs weighted normalization processing on the sum of the following, that is, respectively, according to the following equations (5) and (6), respectively deal with:

P_PRB =∑(d(i)xP_PRB(i))/N (6) 其中， N为设定时间帧中的时隙总数， δ (i)、 d (i)分别为每个时隙中和 ^的权值，设置方法可以为，当所有的 RE均连续分布时， (i)、 d (i) 为 1, 均不连续分布时， δ (i)、 d (i) 为 0.1。 δ. 3可以相同，也可以不同，可以分别进行设定。由于根据经验对 (i)、 3 (i)进行设定是非常容易实现的，本发明实施例不再给出其他的设定方式。也可以根据系统中 BS和低功率节点间的需求，如负载均衡、小区间干扰、覆盖范围调整等动态调整 (i)、 a (i) 的大小。 P _PRB =∑(d(i)xP _PRB (i))/N (6) where N is the total number of time slots in the set time frame, δ (i), d (i) are in each time slot The weights of ^ and ^ can be set such that when all REs are continuously distributed, (i) and d (i) are 1, and when they are not continuously distributed, δ (i) and d (i) are 0.1. δ. 3 may be the same or different, and may be set separately. Since setting (i), 3 (i) is very easy to implement according to experience, other setting modes are not given in the embodiment of the present invention. It is also possible to dynamically adjust the size of (i), a (i) according to the requirements between the BS and the low power nodes in the system, such as load balancing, small interval interference, and coverage adjustment.

用表示本发明实施例的加权的 BS、低功率节点的 RSRQ参考值，有： τ =v Iv ( 7 ) 其中，公式（7 ) 中， V_RSRQ—_BS为 BS的 RSRQ值， V_KSKe—„为低功率节点的 RSRQ值，下标 BS代表基站，下标 LP代表低功率节点。 With the weighted BS, low power node RSRQ reference values representing the embodiment of the present invention, there are: τ = v Iv ( 7 ) where, in equation (7), V _RSRQ — _BS is the RSRQ value of the BS, V _KSKe — „ is the RSRQ value of the low power node, the subscript BS represents the base station, and the subscript LP represents the low power node. .

将上述公式（4 )、（5 )、 ( 6 )代入公式（7 )可得： Substituting the above formulas (4), (5), and (6) into the formula (7) can be obtained:

N I N N I N

T_SH =∑{ S_BS d) P_RS-BS ('·) x _LP (i) x P_PRB—_LP (i) )/∑{S_LP (i) x P_RS—_LP (i) x d_BS (i) x P_PRB__BS (i) ) T _SH =∑{ S _BS d) P _RS -BS ('·) x _LP (i) x P _PRB — _LP (i) )/∑{S _LP (i) x P _RS — _LP (i) xd _BS ( i) x P _PRB _ _BS (i) )

I I

( 8 ) ( 8 )

步驟 102, 将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较。 Step 102: Compare the RSRQ ratio of the base station and the RSRQ ratio of the low power node with a set threshold.

上述公式（8 )确定的 r_OT即为基站的 RSRQ与低功率节点的 RSRQ比值。本发明的实施例中，也可以使用非加权后的基站的 RSRQ与低功率节点的 RSRQ比值作为干扰管理的基础。 The r _OT determined by the above formula (8) is the ratio of the RSRQ of the base station to the RSRQ of the low power node. In the embodiment of the present invention, the RSRQ ratio of the unweighted base station and the RSRQ ratio of the low power node may also be used as the basis of interference management.

确定出基站的 RSRQ与低功率节点的 RSRQ比值后，与事先设定的阈值进行比较。 After determining the ratio of the RSRQ of the base station to the RSRQ of the low power node, it is compared with a preset threshold.

阈值的设定方式是根据运营商的管理需求而确定的，设定阈值的方式有很多种。以下通过一示例，阐明本发明阈值是如何设定的，该示例并非用于限定阈值的设定方式。 The threshold is set according to the management requirements of the operator. There are many ways to set the threshold. The following is an example to illustrate how the threshold of the present invention is set. This example is not intended to define the manner in which the threshold is set.

假定,所设定的的阈值有四个,分别为： T_SH—_HA„_DOVER和 T_SH― _RP1、 T_SH__RP2、 T_SH__RP3 , — w代表切换阈值， r_OT 表示资源及功率分配阈值， T_SH—_RPL、 T_SH—_RP2、 — ^分别表示进行资源及功率分配所依据的等级，上述阈值的关系是 T > T > Τ ¹ > Τ 步驟 103 , 根据比较结果对用户设备 UE进行干扰管理。 Assume that there are four thresholds set, namely: T _SH — _HA „ _DOVER and T _SH ― _RP1 , T _SH _ _RP2 , T _SH _ _RP3 , — w represents the switching threshold, r _OT represents the resource and power allocation Threshold, T _SH — _RPL , T _SH — _RP2 , — ^ respectively indicate the level by which the resource and power allocation are performed. The relationship of the above threshold is T > T > Τ ¹ > Τ Step 103, and the user equipment UE is performed according to the comparison result. Interference management.

表 1示出了 7^与设定阈值比较结果对应的干扰管理策略，也是 BS、低功率节点对 UE的小区选择与切换、资源与功率分配、控制信道信息承载的示例。加权 RSRQ参考小区选择资源与功兼容指示器 Table 1 shows an interference management policy corresponding to the result of the comparison of the set thresholds, and is also an example of the BS, the cell selection and handover of the low power node to the UE, the resource and power allocation, and the control channel information bearer. Weighted RSRQ reference cell selection resource and function compatibility indicator

值与切换率分配小区选择新小区重 τ > τ - 与切换新分配 Value and handover rate allocation cell selection new cell weight τ > τ - and handover new assignment

0 0

BS、低功率节点的上行链路、 BS, uplink of low power nodes,

下行链路控制信道信息在全 Downlink control channel information is in full

部 RE上发送 Send on the RE

- 010、 011 - 010, 011

1 1

BS、低功率节点的上行链路、 BS, uplink of low power nodes,

下行链路控制信道信息在主 Downlink control channel information is in the main

组成载波全部 RE上发送 The constituent carriers are all sent on the RE

0 0

BS、低功率节点的上行链路、 BS, uplink of low power nodes,

部满功率发射的 RE上发送 Sending on the RE of the full power transmission

101、 110、 τ > Τ > Τ - 1 101, 110, τ > Τ > Τ - 1

111 111

BS、低功率节点的上行链路、 BS, uplink of low power nodes,

部满功率发射的主组成载波 Main component carrier of full power transmission

全部 RE上发送 Send all on RE

0 0

BS的上行链路、下行链路控 Uplink and downlink control of BS

000、 001、 1 - 制信道信息在满功率发射的 000, 001, 1 - channel information is transmitted at full power

100 100

RE上发送，低功率节点的在 Send on RE, low power node

非满功率发射的 RE上发送 1 Sending on REs with non-full power transmission 1

BS的上行链路、下行链路控 Uplink and downlink control of BS

制信道信息在非满功率发射 Channel information at non-full power transmission

的 RE上发送，低功率节点的 Send on RE, low power node

在满功率发射的 RE上发送 Sent on full power transmitted RE

表 1 Table 1

表 1中，兼容指示器主要是指接入基站、低功率节点的 UE是否支持后向兼容。本发明的实施例中，当 UE为后向兼容时， BS、低功率节点根据载波上承载的控制信道信息来确定载波的后向兼容特性，当 UE为非后向兼容时， BS、低功率节点将全部载波设置为非后向兼容，以确保 UE正确接入到 BS、低功率节点。表 2说明了本发明实施例的载波兼容指示器（CC ) 的设置方式。 In Table 1, the compatibility indicator mainly refers to whether the UE accessing the base station and the low power node supports backward compatibility. In the embodiment of the present invention, when the UE is backward compatible, the BS and the low power node determine the backward compatibility characteristic of the carrier according to the control channel information carried on the carrier. When the UE is non-backward compatible, the BS and the low power are used. The node sets all carriers to be non-backward compatible to ensure that the UE is properly connected to the BS, low power node. Table 2 illustrates the manner in which the carrier compatible indicator (CC) of the embodiment of the present invention is set.

表 2 Table 2

其中， 0代表载波兼容指示器为非后向兼容， 1代表载波兼容指示器为后向兼容。同时，主 /辅组成载波设置时，主组成载波配置到兼容指示器为 0值的 CC, 对于后向兼容，辅组成载波可以配置到兼容指示器为 0/1值的 CC, 而对于非后向兼容，辅组成载波只能配置到兼容指示器为 0值的 cc。 Where 0 means the carrier compatible indicator is non-backward compatible and 1 means the carrier compatible indicator is backward compatible. At the same time, when the primary/secondary component is set, the primary component carrier is configured to a CC with a compatible indicator of 0. For backward compatibility, the secondary component carrier can be configured to a CC with a compatible indicator of 0/1, and To be compatible, the auxiliary component carrier can only be configured to a cc with a 0 value for the compatibility indicator.

另外，本发明实施例的 BS、低功率节点设置资源与功率分配策略如表 3所示。功率分配 In addition, the BS, low power node setting resource and power allocation strategy of the embodiment of the present invention are shown in Table 3. Power distribution

资 0 正交 00 BS、低功率节点满功率发射源 0 Orthogonal 00 BS, low power node full power source

01 RS '；劝率射分低功率节点降低功率发射配低功率节点满功率发射 01 RS '; Dividing low power nodes to reduce power transmission with low power node full power transmission

10 10

BS降低功率发射 BS reduces power transmission

11 BS、低功率节点降低功率发射 11 BS, low power node reduces power transmission

BS满功率发射 BS full power transmission

00 00

低功率节点降低功率发射 Low power nodes reduce power emissions

BS部分 RE满功率发射 BS part RE full power transmission

01 01

低功率节点降低功率发射 Low power nodes reduce power emissions

1 准正交 1 quasi-orthogonal

BS部分 RE满功率发射 BS part RE full power transmission

10 10

低功率节点部分 RE降低功率发射低功率节点满功率发射 Low power node part RE reduces power transmission low power node full power transmission

11 11

BS降低功率发射 BS reduces power transmission

表 3 table 3

表 3中， 0表示正交或准正交， 1表示非正交或非准正交。上述的 00、 01、 10、 11中第一 bit位对应于基站，用于指示基站中载波是否正交或准正交，第二 bit位对应于低功率节点，用于指示低功率节点中载波是否正交或准正交。 In Table 3, 0 indicates orthogonal or quasi-orthogonal, and 1 indicates non-orthogonal or non-quasi-orthogonal. The first bit in the above 00, 01, 10, and 11 corresponds to the base station, and is used to indicate whether the carrier in the base station is orthogonal or quasi-orthogonal, and the second bit corresponds to the low power node, and is used to indicate the carrier in the low power node. Whether orthogonal or quasi-orthogonal.

低功率节点为如射频拉远节点、 Pico 小区节点、家庭基站、中继节点等发射功率比宏基站显著低的网络节点。 The low power nodes are network nodes whose transmission power is significantly lower than that of the macro base station, such as a radio remote node, a Pico cell node, a home base station, and a relay node.

图 2为本发明实施例的异构网络中干扰管理装置的组成结构示意图，如图 2所示，本发明实施例的异构网络中干扰管理装置确定单元 20、比较单元 21和干扰管理单元 22, 其中： 2 is a schematic structural diagram of an interference management apparatus in a heterogeneous network according to an embodiment of the present invention. As shown in FIG. 2, an interference management apparatus determining unit 20, a comparing unit 21, and an interference management unit 22 in a heterogeneous network according to an embodiment of the present invention are shown in FIG. , among them:

确定单元 20, 分别确定基站、低功率节点的 RSRQ; The determining unit 20 determines the RSRQ of the base station and the low power node respectively;

比较单元 21 , 用于将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较；干扰管理单元 22, 用于根据比较结果对 UE进行干扰管理。其中，所述确定单元 20还用于，分别确定基站、低功率节点的 RSRP 及 RSSI, 还分别确定基站、低功率节点的 RSRP与 RSSI的比值，将所述比值与传输所需要的 PRB 总数 N_raB的积分别作为基站、低功率节点的 RSRQ₀ The comparing unit 21 is configured to compare the RSRQ ratio of the base station and the RSRQ ratio of the low power node with a set threshold; The interference management unit 22 is configured to perform interference management on the UE according to the comparison result. The determining unit 20 is further configured to determine the RSRP and the RSSI of the base station and the low-power node, respectively, and determine the ratio of the RSRP to the RSSI of the base station and the low-power node, respectively, and compare the ratio and the total number of PRBs required for transmission. _{The product of raB} is used as the RSRQ _{0 of the} base station and low power node respectively.

其中，所述确定单元 20还用于，分别确定基站、低功率节点的接收带宽内两个时隙上的小区参考信号的所有 RE接收功率的线性平均值以及分别获取所述 UE上报的路损 PL, 以和 PL的积分别作为基站、低功率节点的 RSRP; 以及，分别确定基站、低功率节点的接收带宽内两个时隙上 PRB的平均发射功率/ ^ , 将 P _B、 N_PRB、 PL作连积后，与 PRB中的 OFDM 符号数 N_s 。_;作商，将商值分别作为基站、低功率节点的 RSSI。 The determining unit 20 is further configured to respectively determine a linear average value of all RE receiving powers of the cell reference signals on the two slots in the receiving bandwidth of the base station and the low power node, and respectively acquire the path loss reported by the UE. PL, the product of the PL and the PL are respectively used as the RSRP of the base station and the low power node; and, respectively, determining the average transmit power / ^ of the PRB in the two slots in the receiving bandwidth of the base station and the low power node, respectively, P _B , N _PRB , After the PL is concatenated, the number of OFDM symbols in the PRB is N _s . _; Commercially for the quotient values as the RSSI base, low power node.

本发明实施例的异构网络中干扰管理装置还包括： The interference management apparatus in the heterogeneous network of the embodiment of the present invention further includes:

加权归一化处理单元 23, 用于对、 /^进行加权归一化处理，为： The weighted normalization processing unit 23 is configured to perform weighted normalization on and /^, which is:

P_RS = j^ P_Ri lN、

, 其中， Ν 为设定时间帧中的时隙总数， δ ( i)、 d ( i)分别为每个时隙中和/^的权值； δ ( i)、 d (i)根据负载均衡、小区间干扰、覆盖范围调整而设定； P _RS = j^ P _Ri lN,

, , is the total number of time slots in the set time frame, δ ( i), d ( i) are the weights of each time slot and / ^ respectively; δ ( i), d (i) according to load balancing , small interval interference, coverage adjustment and setting;

所述确定单元 20还用于，以加权归一化处理后的、确定基站、低功率节点的 RSRQ。 The determining unit 20 is further configured to determine the RSRQ of the base station and the low power node by weighting and normalizing.

本领域技术人员应当理解，上述的加权归一化处理单元 23是为优化本发明异构网络中干扰管理装置的技术方案而设置的，并非是实现本发明实施例的异构网络中干扰管理装置的必要技术手段。 It should be understood by those skilled in the art that the weighted normalization processing unit 23 is provided to optimize the technical solution of the interference management apparatus in the heterogeneous network of the present invention, and is not an interference management apparatus in the heterogeneous network that implements the embodiment of the present invention. The necessary technical means.

上述设定阈值包括切换阈值、资源及功率分配阈值； The above set threshold includes a handover threshold, a resource, and a power allocation threshold;

所述干扰管理包括小区选择与切换、资源与功率分配或控制信道信息承载；所述干扰管理单元 22还用于，根据基站的 RSRQ和低功率节点的 RSRQ 扰管理方式。 The interference management includes cell selection and handover, resource and power allocation, or control channel information bearer; The interference management unit 22 is further configured to: according to the RSRQ of the base station and the RSRQ interference management mode of the low power node.

其中，上述干扰管理策略包括： The above interference management strategies include:

或者，上述干扰管理策略包括：基站或低功率节点的载波资源为正交和 /或准正交时以满功率发射，非正交和 /或正交和 /或准正交时以降低功率发射。 Alternatively, the foregoing interference management strategy includes: transmitting, at a full power, a carrier resource of a base station or a low power node is orthogonal and/or quasi-orthogonal, and reducing power transmission when non-orthogonal and/or orthogonal and/or quasi-orthogonal .

上述所示的干扰管理策略可结合使用。 The interference management strategies shown above can be used in combination.

本发明实施例中，上述低功率节点为如射频拉远节点、 Pico小区节点、家庭基站、中继节点等发射功率比宏基站显著低的网络节点。 In the embodiment of the present invention, the low-power node is a network node whose transmitting power is significantly lower than that of the macro base station, such as a radio remote node, a Pico cell node, a home base station, and a relay node.

本领域技术人员应当理解，图 2 中所示的异构网络中干扰管理装置中的各处理单元的实现功能可参照前述异构网络中干扰管理方法的相关描述而理解。本领域技术人员应当理解，图 2所示的异构网络中干扰管理装置中各处理单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。 Those skilled in the art should understand that the implementation functions of the processing units in the interference management apparatus in the heterogeneous network shown in FIG. 2 may refer to the related description of the interference management method in the foregoing heterogeneous network. And understand. It should be understood by those skilled in the art that the functions of the processing units in the interference management apparatus in the heterogeneous network shown in FIG. 2 can be implemented by a program running on the processor, or can be implemented by a specific logic circuit.

以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

工业实用性 Industrial applicability

本发明通过资源分配、功率控制、控制信道的配置，能够在确保基站和低功率节点通信质量的前提下，显著降低小区间的干扰；通过对主 /辅载波上所有 RE控制信道信息的设置，保证了对于后向兼容 /非后向兼容 UE 的支持；通过基站、低功率节点的 RSRQ参考值实施新的 UE小区选择与切换策略，避免了低功率节点附属（或服务）的 UE显著减少；通过 RSRQ 加权的方式解决了控制信道的资源单元遍布全部***带宽时无法进行有效的功率控制，进而导致小区间干扰的问题。 The invention can significantly reduce inter-cell interference under the premise of ensuring the communication quality of the base station and the low-power node by resource allocation, power control, and control channel configuration; and setting the control channel information of all REs on the primary/secondary carrier, Guaranteeing support for backward compatible/non-backward compatible UEs; implementing a new UE cell selection and handover strategy by using RSRQ reference values of base stations and low power nodes, avoiding significant reduction of low power node affiliated (or serving) UEs; The RSRQ weighting method solves the problem that the resource unit of the control channel cannot perform effective power control when the resource unit is spread over the entire system bandwidth, thereby causing inter-cell interference.

Claims

权利要求书 Claim

1、一种异构网络中干扰管理方法，其中，所述方法包括： A method for managing interference in a heterogeneous network, where the method includes:

分别确定基站、低功率节点的参考信号接收质量 RSRQ, 将基站的 RSRQ和低功率节点的 RSRQ比值与设定阈值进行比较，根据比较结果对用户设备 UE进行干扰管理。 The reference signal receiving quality RSRQ of the base station and the low power node is respectively determined, and the RSRQ ratio of the base station and the RSRQ ratio of the low power node are compared with a set threshold, and the user equipment UE is subjected to interference management according to the comparison result.

2、根据权利要求 1所述的方法，其中，所述分别确定基站、低功率节点的 RSRQ, 为： 2. The method according to claim 1, wherein the determining the RSRQ of the base station and the low power node respectively is:

分别确定基站、低功率节点的参考信号接收功率 RSRP及接收信号强度指示 RSSI, 还分别确定基站、低功率节点的 RSRP与 RSSI的比值，将所述比值与传输所需要的物理资源块 PRB总数 N_raB的积分别作为基站、低功率节点的 RSRQ。 Determining the reference signal received power RSRP and the received signal strength indicator RSSI of the base station and the low power node respectively, and determining the ratio of the RSRP to the RSSI of the base station and the low power node, respectively, and comparing the ratio to the total number of physical resource blocks PRB required for transmission. _{The product of raB} is used as the RSRQ of the base station and the low power node, respectively.

3、根据权利要求 2所述的方法，其中，确定基站、低功率节点的 RSRP, 为： 3. The method of claim 2, wherein determining the RSRP of the base station and the low power node is:

分别确定基站、低功率节点的接收带宽内两个时隙上的小区参考信号的所有资源单元 RE接收功率的线性平均值/^ , 以及分别获取所述 UE上报的路损 PL, 以和 PL的积分别作为基站、低功率节点的 RSRP; Determining, respectively, a linear average value /^ of the received power of all resource units RE of the cell reference signal on the two slots in the receiving bandwidth of the base station and the low power node, and respectively acquiring the path loss PL reported by the UE, and the PL The product is used as the RSRP of the base station and the low power node respectively;

分别确定基站、低功率节点的接收带宽内两个时隙上 PRB的平均发射功率 P_PRB , 将 _ββ、 N_PRB、 PL作连积后，与 PRB中的 OFDM符号数 ^作商，将商值分别作为基站、低功率节点的 RSSI。 Determining the average transmit power P _{PRB of the PRBs} in the two slots in the receiving bandwidth of the base station and the low power node respectively, and concatenating _ββ , N _PRB , and PL, and quoting the number of OFDM symbols in the PRB, the quotient As the base station, the RSSI of the low power node.

4、根据权利要求 3所述的方法，其中，所述方法还包括：对、 _β进行加权归一化处理，为：

、The method according to claim 3, wherein the method further comprises: performing weighted normalization processing on and _β , as follows:

,

P_PRB =∑(d(i)xP_PRB(i))/N ,其中， Ν为设定时间帧中的时隙总数， (i)、 3 (i) 分别为每个时隙中和/^的权值； δ ( i )、 a ( i )根据负载均衡、小区间干扰、覆盖范围调整而设定； P _PRB =∑(d(i)xP _PRB (i))/N , where Ν is the total number of time slots in the set time frame, (i), 3 (i) The weights of each time slot and /^ are respectively; δ ( i ), a ( i ) are set according to load balancing, small interval interference, and coverage adjustment;

5、根据权利要求 1所述的方法，其中，所述设定阈值包括切换阈值、资源及功率分配阈值； 5. The method according to claim 1, wherein the set threshold comprises a handover threshold, a resource, and a power allocation threshold;

所述干扰管理包括小区选择与切换、资源与功率分配或控制信道信息承载； The interference management includes cell selection and handover, resource and power allocation, or control channel information bearer;

6、根据权利要求 5所述的方法，其中，所述干扰管理策略包括：大于切换阈值，进行小区切换； The method according to claim 5, wherein the interference management policy comprises: performing a cell handover by being greater than a handover threshold;

小于等于第二资源及功率分配阈值大于第三资源及功率分配阈值时，在载波支持后向兼容时，基站的链路控制信道信息在满功率发射的 RE上发送，低功率节点的链路控制信道信息在非满功率发射的 RE上发送；在载波不支持后向兼容时，基站的链路控制信道信息在非满功率发射的 RE上发送，低功率节点的链路控制信道信息在满功率发射的 RE上发送。 When the second resource and the power allocation threshold are greater than the third resource and the power allocation threshold, when the carrier is backward compatible, the link control channel information of the base station is sent on the RE of the full power transmission, and the link control of the low power node is performed. The channel information is transmitted on the RE of the non-full power transmission; when the carrier does not support the backward compatibility, the link control channel information of the base station is sent on the RE of the non-full power transmission. The link control channel information of the low power node is sent on the RE of the full power transmission.

7、根据权利要求 1所述的方法，其中，所述干扰管理策略包括：基站或低功率节点的载波资源为正交和 /或准正交时以满功率发射，非正交和 /或正交和 /或准正交时以降低功率发射。 7. The method according to claim 1, wherein the interference management policy comprises: transmitting, at a full power, a carrier power of a base station or a low power node is orthogonal, and/or quasi-orthogonal, non-orthogonal and/or positive Transmit and / or quasi-orthogonal to reduce power transmission.

8、一种异构网络中干扰管理装置，其中，所述装置包括确定单元、比较单元和干扰管理单元，其中： 8. An interference management apparatus in a heterogeneous network, where the apparatus includes a determining unit, a comparing unit, and an interference management unit, where:

9、根据权利要求 8所述的装置，其中，所述确定单元还用于，分别确定基站、低功率节点的 RSRP及 RSSI,还分别确定基站、低功率节点的 RSRP 与 RSSI的比值，将所述比值与传输所需要的 PRB总数 N_raB的积分别作为基站、低功率节点的 RSRQ。 The device according to claim 8, wherein the determining unit is further configured to separately determine RSRP and RSSI of the base station and the low power node, and determine a ratio of RSRP to RSSI of the base station and the low power node, respectively. The product of the ratio and the total number of PRBs required for transmission, N _raB , is used as the RSRQ of the base station and the low power node, respectively.

10、根据权利要求 9所述的装置，其中，所述确定单元还用于，分别确定基站、低功率节点的接收带宽内两个时隙上的小区参考信号的所有 RE 接收功率的线性平均值 , 以及分别获取所述 UE上报的路损 PL, 以和 PL的积分别作为基站、低功率节点的 RSRP; The apparatus according to claim 9, wherein the determining unit is further configured to respectively determine a linear average value of all RE receiving powers of the cell reference signals on the two slots in the receiving bandwidth of the base station and the low power node. Obtaining, respectively, the path loss PL reported by the UE, and the product of the PL and the PL as the RSRP of the base station and the low power node;

11、根据权利要求 10所述的装置，其中，所述装置还包括： The device according to claim 10, wherein the device further comprises:

加权归一化处理单元，用于对、 /^进行加权归一化处理，为： A weighted normalization processing unit for performing weighted normalization on and /^ is:

P_RS =∑(^i)xP_Rs(i))/N . P_PRB =∑{d(i)xP_PRB(i))/N , 其中， N 为设定时间帧中 ί=1 ί=1 P _RS =∑(^i)xP _R s(i))/N . P _PRB =∑{d(i)xP _PRB (i))/N , where N is the set time frame ί=1 ί= 1

的时隙总数， δ ( i)、 a ( i)分别为每个时隙中和/^的权值； δ ( i)、 a ( i )根据负载均衡、小区间干扰、覆盖范围调整而设定； The total number of time slots, δ ( i), a ( i) are the weights of each and every time slot; δ ( i), a (i) set according to load balancing, small interval interference, and coverage adjustment;

12、根据权利要求 8所述的装置，其中，所述设定阈值包括切换阈值、资源及功率分配阈值； 12. The apparatus according to claim 8, wherein the set threshold comprises a handover threshold, a resource, and a power allocation threshold;

13、根据权利要求 12所述的装置，其中，所述干扰管理策略包括：大于切换阈值，进行小区切换； The apparatus according to claim 12, wherein the interference management policy comprises: performing a cell handover by being greater than a handover threshold;

和 /或，基站或低功率节点的载波资源为正交和 /或准正交时以满功率发 And/or, when the carrier resources of the base station or the low power node are orthogonal and/or quasi-orthogonal, the power is transmitted at full power.

IZOLLO/ZlOZ lD/lDd Ο ^ΐ/εΐΟΖ OAV IZOLLO/ZlOZ lD/lDd Ο ^ΐ/εΐΟΖ OAV

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