CN103167505A - A cell data channel configuration method and system - Google Patents
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Abstract
本发明公开了一种小区数据信道配置方法和系统,方法包括步骤:采集小区业务数据;根据所采集的小区业务数据,将业务特性相同的小区归为一类;采用回归方法针对每一类型的小区,建立信道和参数配置与网络指标之间的关联关系;根据针对每一类型的小区的信道和参数配置与网络指标之间的关联关系,对对应小区进行资源配置。系统包括:数据采集模块、小区分类模块和配置模块。采用了本发明的技术方案,能够对数据业务信道进行合理规划,既保证保障数据业务的质量,提高用户感知,同时又尽可能地提高了数据信道的利用效率,提升了话音业务的质量。
The invention discloses a cell data channel configuration method and system. The method includes the steps of: collecting cell service data; classifying cells with the same service characteristics into one category according to the collected cell service data; adopting a regression method for each type of cell For a cell, an association relationship between channel and parameter configurations and network indicators is established; according to the association relationship between channel and parameter configurations and network indicators for each type of cell, resource allocation is performed for the corresponding cell. The system includes: a data acquisition module, a community classification module and a configuration module. By adopting the technical solution of the present invention, the data service channel can be reasonably planned, which not only guarantees the quality of the data service, improves user perception, but also improves the utilization efficiency of the data channel as much as possible, and improves the quality of the voice service.
Description
技术领域 technical field
本发明涉及无线技术领域,特别涉及一种小区数据信道配置方法和系统。The invention relates to the field of wireless technology, in particular to a cell data channel configuration method and system.
背景技术 Background technique
坎贝算法是目前应用较为广泛的一种数据业务信道配置方法。其关键是引入业务资源强度,不同业务对无线资源的占用情况不同,高速业务占用资源较多,低速业务占用资源量较小,坎贝尔模型定义业务资源强度来反映不同业务对无线资源的占用情况。在GPRS(General Packet RadioService,通用分组无线服务技术)系统中,业务资源强度就是对带宽的需求,以单时隙容量带宽为1,设每种业务的业务资源强度为Ai,每种业务的话务量为Ei,则虚拟业务(坎贝尔业务)的业务资源强度和话务量为The Campbell algorithm is a data traffic channel configuration method widely used at present. The key is to introduce service resource intensity. Different services occupy different wireless resources. High-speed services occupy more resources, while low-speed services occupy less resources. The Campbell model defines service resource intensity to reflect the occupation of wireless resources by different services. In the GPRS (General Packet Radio Service, general packet radio service technology) system, the service resource intensity is the demand for bandwidth, with the capacity bandwidth of a single time slot being 1, the service resource intensity of each service is assumed to be A i , and the service resource intensity of each service is The traffic volume is E i , then the service resource intensity and traffic volume of the virtual service (Campbell service) are
如果一个小区可以提供n个物理时隙用于GPRS业务,则相当于提供了个坎贝尔信道给坎贝尔业务使用,对nx按照Erlang B公式(如2%的呼损)计算的业务量除以每用户的坎贝尔业务量,即是小区可以支持的用户数。If a cell can provide n physical time slots for GPRS services, it is quite In order to provide a Campbell channel for the Campbell service, divide the service volume calculated according to the Erlang B formula (such as 2% call loss) by the Campbell service volume of each user for n x , that is, the number of users that the cell can support.
与此类似的,还有中国专利CN102083215A号提出了针对数据信道配置的方法,包括:获取需要进行PDCH(Packet Data Channel,分组数据信道)配置的小区的当前数据量;并根据获取的当前数据量与设定的业务质量条件,确定该小区当前所需的PDCH配置数;设定的业务质量条件表征该小区的数据传输速率要求;以及根据确定出的当前所需的PDCH配置数,对该小区进行PDCH配置。Similar to this, Chinese patent CN102083215A also proposes a method for data channel configuration, including: obtaining the current data volume of a cell that needs to be configured with PDCH (Packet Data Channel, packet data channel); and according to the obtained current data volume Determine the number of PDCH configurations currently required by the cell with the set quality of service condition; the set quality of service condition represents the data transmission rate requirement of the cell; and according to the determined current required PDCH configuration number, the cell Perform PDCH configuration.
传统的无线信道资源规划是采用坎贝尔算法,该算法存在很多人为的前提假设,如:每次业务请求数据是以平均带宽连续传送的,终端每次申请信道数是够满足带宽需求的最小信道数等。单实际的数据业务实在RLC(Radio Link Control,无线链路控制)层的Block级别的复用,有突发性。第一个假设降低了信道的复用度和使用效率,而第二个假设则降低了集线效率,因为终端申请时隙一半是按照硬件能力级别申请的,不区分业务。The traditional wireless channel resource planning uses the Campbell algorithm, which has many artificial assumptions, such as: each service request data is continuously transmitted with the average bandwidth, and the number of channels requested by the terminal each time is the minimum number of channels that can meet the bandwidth requirements wait. The actual data service is multiplexed at the Block level of the RLC (Radio Link Control, radio link control) layer, which is bursty. The first assumption reduces channel multiplexing and usage efficiency, while the second assumption reduces hub efficiency, because half of the terminal application time slots are applied for according to the hardware capability level, and services are not differentiated.
由于在不同小区在业务配比及数据业务用户行为特征上都存在差异,根据某小区数据得到的业务特性及配置方案针对该小区能达到很高的精确度,但是对于其他小区,由于业务特性的差异,在准确度上就大打折扣。实际应用中存在无法大规模进行快速部署等问题。Due to the differences in service allocation and data service user behavior characteristics in different communities, the service characteristics and configuration scheme obtained from the data of a certain community can achieve high accuracy for this community, but for other communities, due to the different service characteristics The difference greatly reduces the accuracy. In practical applications, there are problems such as the impossibility of large-scale rapid deployment.
专利CN102083215A中提到的方法与坎贝尔方法近似,但是考虑到了业务质量条件,在这方面有所提高。问题同样在于配置的方案得到是针对某个小区的,无法进行大规模地推广。The method mentioned in the patent CN102083215A is similar to the Campbell method, but it has been improved in this respect considering the service quality condition. The problem is also that the configuration scheme is targeted at a certain community and cannot be promoted on a large scale.
发明内容 Contents of the invention
本发明的目的是提供一种小区数据信道配置方法和系统,能够对数据业务信道进行合理规划,既保证保障数据业务的质量,提高用户感知,同时又尽可能地提高数据信道的利用效率,提升话音业务的质量。The purpose of the present invention is to provide a cell data channel configuration method and system, which can reasonably plan the data service channel, not only guarantee the quality of the data service, improve user perception, but also improve the utilization efficiency of the data channel as much as possible, improve The quality of the voice service.
本发明实施例中提供了一种小区数据信道配置方法包括步骤:An embodiment of the present invention provides a cell data channel configuration method including steps:
采集小区业务数据;根据所采集的小区业务数据,将业务特性相同的小区归为一类;采用回归方法针对每一类型的小区,建立信道和参数配置与网络指标之间的关联关系;根据针对每一类型的小区的信道和参数配置与网络指标之间的关联关系,对对应小区进行资源配置。Collect community service data; according to the collected community service data, classify the communities with the same service characteristics into one category; use the regression method for each type of community to establish the correlation between channel and parameter configuration and network indicators; The channel and parameter configuration of each type of cell are associated with network indicators, and resource configuration is performed on the corresponding cell.
本发明的小区数据信道配置方法,还包括以下步骤:The cell data channel configuration method of the present invention also includes the following steps:
评测所述对应小区资源配置调整前后关键绩效指标的变化,如果评测结果不理想,则重新建立信道和参数配置与网络指标之间的关联关系,至到所述评测结果理想。Evaluate the change of key performance indicators before and after the adjustment of the resource configuration of the corresponding cell, if the evaluation result is not satisfactory, re-establish the correlation between the channel and parameter configuration and the network index until the evaluation result is satisfactory.
本发明的小区数据信道配置方法,获取小区资源配置的KPI,判断所述KPI是否达到预设值,如果达到,则所述评测结果是理想的,否则所述评测结果是不理想的。The cell data channel configuration method of the present invention acquires the KPI of the resource configuration of the cell, and judges whether the KPI reaches a preset value, and if so, the evaluation result is ideal, otherwise, the evaluation result is unsatisfactory.
本发明的小区数据信道配置方法,小区业务数据是通过数据快照系统进行采集的。In the cell data channel configuration method of the present invention, cell service data is collected through a data snapshot system.
本发明的小区数据信道配置方法,所述业务特性包括业务的数据流量、小区业务频次和小区业务时长。In the cell data channel configuration method of the present invention, the service characteristics include service data flow, cell service frequency and cell service duration.
本发明的小区数据信道配置方法,采用数据挖掘的方法,通过聚类算法,将业务特性相同的小区归为一类。The cell data channel configuration method of the present invention adopts a data mining method and a clustering algorithm to classify cells with the same service characteristics into one category.
本发明的小区数据信道配置方法,进一步包括,对所采集的小区业务数据进行预处理,得到处理后的小区业务数据;以处理后的小区业务数据作为输入,先利用聚类算法Two step得到目标类别数,以目标类别数为输入,利用聚类算法K-means得到小区类型编号;对小区类型编号进行验证,如果验证结果不理想,则调整Two step和/或K-means的参数,直到结果理想。The cell data channel configuration method of the present invention further includes: preprocessing the collected cell service data to obtain the processed cell service data; using the processed cell service data as input, first using the clustering algorithm Two step to obtain the target The number of categories, using the number of target categories as input, using the clustering algorithm K-means to obtain the cell type number; verify the cell type number, if the verification result is not satisfactory, adjust the parameters of Two step and/or K-means until the result ideal.
本发明的小区数据信道配置方法,建立信道和参数配置与网络指标之间的关联关系的步骤进一步包括,建立对网络指标TRF239的预测模型;建立对配置参数CDEF的预测模型;根据拥塞率计算相应的CDED参数配置。In the cell data channel configuration method of the present invention, the step of establishing the relationship between the channel and parameter configuration and the network index further includes: establishing a prediction model for the network index TRF239; establishing a prediction model for the configuration parameter CDEF; calculating the corresponding CDED parameter configuration.
本发明的小区数据信道配置方法,建立对网络指标TRF239的预测模型的步骤进一步包括,选定的预测自变量;对自变量进行数据转换;以自变量转换后的数据为输入,使用多元线性回归的算法,计算得到结果;对结果进行分析,如果达不到评价指标,则重新选择自变量,或者对自变量进行其它方式的数据转换,或者选择其他的拟合算法,至到达到评价指标。In the cell data channel configuration method of the present invention, the step of establishing a prediction model for the network index TRF239 further includes, selecting the predictive independent variable; performing data conversion on the independent variable; taking the data converted by the independent variable as input, and using multiple linear regression The algorithm is used to calculate the result; analyze the result, if the evaluation index cannot be reached, re-select the independent variable, or perform other data conversion on the independent variable, or choose other fitting algorithms, until the evaluation index is reached.
本发明的小区数据信道配置方法,建立对配置参数CDEF的预测模型的步骤进一步包括,将TRF_239、升降域网络配置参数、小区话音单时隙负荷和数据单时隙负荷作为自变量,使用线性回归算法,计算得到CDEF。In the cell data channel configuration method of the present invention, the step of establishing a prediction model for the configuration parameter CDEF further includes, using TRF_239, the configuration parameters of the lifting domain network, the cell voice single time slot load and the data single time slot load as independent variables, and using linear regression Algorithm to calculate CDEF.
本发明的小区数据信道配置方法,还包括:根据小区业务数据,采用决策树方法得到小区类型映射规则集。The cell data channel configuration method of the present invention further includes: obtaining the cell type mapping rule set by adopting a decision tree method according to the cell service data.
本发明实施例还提供了一种小区数据信道配置系统,包括:数据采集模块、小区分类模块和配置模块;数据采集模块,用于采集小区业务数据;小区分类模块,用于根据数据采集模块所采集的小区业务数据,将业务特性相同的小区归为一类;配置模块,用于针对小区分类模块所划分的每一类型的小区,建立对应的信道和参数配置与网络指标之间的关联关系。The embodiment of the present invention also provides a cell data channel configuration system, including: a data collection module, a cell classification module, and a configuration module; a data collection module, for collecting cell service data; a cell classification module, for The collected cell service data classifies the cells with the same service characteristics into one category; the configuration module is used to establish the correlation between the corresponding channel and parameter configuration and network indicators for each type of cell divided by the cell classification module .
本发明的小区数据信道配置系统,还包括评测模块,用于根据针对每一类型的小区的信道和参数配置与网络指标之间的关联关系,对对应小区进行资源配置后,评测小区资源配置调整前后关键绩效指标的变化,如果不理想,则调用配置模块重新建立信道和参数配置与网络指标之间的关联关系,至到对小区资源配置调整前后关键绩效指标的变化评测的结果理想。The cell data channel configuration system of the present invention also includes an evaluation module, which is used to evaluate the resource configuration adjustment of the cell after the resource configuration is performed on the corresponding cell according to the channel and parameter configuration for each type of cell and the association relationship between the parameter configuration and the network index. If the changes of key performance indicators before and after are unsatisfactory, call the configuration module to re-establish the correlation between channel and parameter configuration and network indicators, until the evaluation result of the change of key performance indicators before and after the adjustment of cell resource configuration is satisfactory.
本发明的小区数据信道配置系统,还包括小区类型映射规则集生成模块,用于根据小区业务数据,采用决策树方法得到小区类型映射规则集。The cell data channel configuration system of the present invention further includes a cell type mapping rule set generating module, which is used to obtain the cell type mapping rule set by adopting a decision tree method according to the cell service data.
本发明的技术效果在于,能够对数据业务信道进行合理规划,既保证保障数据业务的质量,提高用户感知,同时又尽可能地提高数据信道的利用效率,提升话音业务的质量。The technical effect of the present invention is that the data service channel can be reasonably planned, which not only guarantees the quality of the data service, improves user perception, but also improves the utilization efficiency of the data channel as much as possible, and improves the quality of the voice service.
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
下面通过附图和实施例,对本发明的技术方案做进一步的详细描述。The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
附图说明 Description of drawings
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。在附图中:The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:
图1是本发明具体实施方式一中的小区数据信道配置方法流程图;FIG. 1 is a flow chart of a cell data channel configuration method in
图2是本发明具体实施方式一中聚类得到小区类型的步骤进一步细化的流程图;Fig. 2 is the flowchart of the further refinement of the step of clustering to obtain the cell type in
图3是本发明具体实施方式一中参数与配置关系建立的步骤进一步细化的流程图;FIG. 3 is a flow chart of further refinement of the steps of establishing the relationship between parameters and configurations in
图4是本发明具体实施方式一中TRF239预测回归的步骤进一步细化的流程图;Fig. 4 is the flow chart that the step of TRF239 prediction regression in the embodiment of the present invention is further refined;
图5是使用本发明具体实施方式一,对需要减配的小区重新配置后,TBF_38C减容前后对比示意图;Figure 5 is a schematic diagram of the comparison before and after the capacity reduction of TBF_38C after reconfiguring the cells that need to be reduced using the first embodiment of the present invention;
图6是使用本发明具体实施方式一,对需要减配的小区重新配置后,TBF_16C减容前后对比示意图;Fig. 6 is a schematic diagram of the comparison before and after the capacity reduction of TBF_16C after reconfiguring the cell that needs to be reduced using the first embodiment of the present invention;
图7是使用本发明具体实施方式一,对需要减配的小区重新配置后,LLC_3减容前后对比示意图;Fig. 7 is a schematic diagram of the comparison before and after LLC_3 capacity reduction after reconfiguring the cells that need to be reduced using the first embodiment of the present invention;
图8是使用本发明具体实施方式一,对需要减配的小区重新配置后,单时隙负荷减容前后对比示意图;Fig. 8 is a schematic diagram of the comparison before and after the single-slot load reduction after reconfiguring the cell that needs to be reduced using the first embodiment of the present invention;
图9是使用本发明具体实施方式一,对需要扩容的小区重新配置后,TBF_38C扩容前后对比示意图;Figure 9 is a schematic diagram of the comparison before and after the expansion of the TBF_38C after reconfiguring the cell that needs to be expanded using the first embodiment of the present invention;
图10是使用本发明具体实施方式一,对需要扩容的小区重新配置后,TBF_16扩容前后对比示意图;Fig. 10 is a schematic diagram of the comparison before and after the expansion of TBF_16 after reconfiguring the cells that need to be expanded using the first embodiment of the present invention;
图11是使用本发明具体实施方式一,对需要扩容的小区重新配置后,LLC_3扩容前后对比示意图;Fig. 11 is a schematic diagram of comparison before and after LLC_3 expansion after reconfiguring the cells that need to be expanded using
图12是使用本发明具体实施方式一,对需要扩容的小区重新配置后,单时隙负荷扩容前后对比示意图;Fig. 12 is a schematic diagram of the comparison before and after single-slot load expansion after reconfiguring the cells that need to be expanded using the first embodiment of the present invention;
图13是本发明具体实施方式二中的小区数据信道配置系统示意图。FIG. 13 is a schematic diagram of a cell data channel configuration system in
具体实施方式 Detailed ways
以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
以下将结合说明书附图,详细描述本发明。The present invention will be described in detail below in conjunction with the accompanying drawings.
如图1所示,一种小区数据信道配置方法,包括步骤:采集小区业务数据;根据所采集的小区业务数据,将业务特性相同的小区归为一类;采用回归方法针对每一类型的小区,建立信道和参数配置与网络指标之间的关联关系;根据针对每一类型的小区的信道和参数配置与网络指标之间的关联关系,对对应小区进行资源配置。As shown in Figure 1, a kind of cell data channel configuration method comprises the steps: collecting cell service data; according to the collected cell service data, the cells with the same service characteristics are classified into one category; using regression method for each type of cell , establishing an association relationship between channel and parameter configurations and network indicators; according to the association relationship between channel and parameter configurations and network indicators for each type of cell, resource allocation is performed on corresponding cells.
通过诺基亚西门子公司的采用了DPI(Deep Packet Inspection,深度包识别)技术的“数据快照”系统得到小区业务特性相关信息。为了达到更精确的无线资源配置,将采集7*24小时数据(抽取其中上下午共六个小时业务忙时)。小区业务特性将包含小区各类业务的数据流量,小区业务频次(业务发起次数)、小区业务时长。要求可识别的业务类型的流量应至少涵盖总流量的80%,至少包含浏览、即时通信、股票、游戏、下载、MMS(Multimedia Messaging Service,多媒体信息服务)、邮件等常用业务,剩余小流量业务将不再细分。Through the "data snapshot" system of Nokia Siemens, which adopts DPI (Deep Packet Inspection, deep packet identification) technology, the relevant information of the service characteristics of the cell is obtained. In order to achieve more accurate wireless resource allocation, 7*24 hours data will be collected (extract six hours of busy hours in the morning and afternoon). The service characteristics of the cell will include the data flow of various services in the cell, the frequency of the cell’s business (the number of times the service is initiated), and the duration of the cell’s business. It is required that the traffic of identifiable business types should cover at least 80% of the total traffic, at least including browsing, instant messaging, stocks, games, downloads, MMS (Multimedia Messaging Service, multimedia information service), mail and other common services, and the remaining small traffic services will no longer be subdivided.
由于业务的种类较多,带来了非常多维度的数据,采用传统的方法难以从中找到需要的信息。如图2所示,在本发明的方法中采用数据挖掘的方法,通过聚类算法,将业务特性相同(包括业务分布,业务频次等信息)的小区归为一类。每个小区应属于且仅属于某一个小区类型。Due to the large variety of businesses, it brings very multi-dimensional data, and it is difficult to find the required information using traditional methods. As shown in Fig. 2, the method of data mining is adopted in the method of the present invention, and the sub-districts with the same service characteristics (including information such as service distribution and service frequency) are classified into one category through a clustering algorithm. Each cell should belong to and only belong to a certain cell type.
通过数据预处理步骤,对输入数据进行选择和处理。例如:在数据采集过程中出现的遗漏数据(即空值)、异常数据(不符合正常逻辑或远离绝大部分数据点)等,需要进行排除。The input data is selected and processed through data preprocessing steps. For example: missing data (ie, null values), abnormal data (not in line with normal logic or far away from most data points) that appear in the data collection process, etc., need to be excluded.
其次,在现网数据中,有部分业务的流量都非常小,甚至有很多小区该业务流量为0,那么象这样的业务应该是被排除在我们的聚类算法之外的。因为本身没有差异性,不排除这样的输入数据只会增加聚类的复杂性并影响结果。Secondly, in the live network data, the traffic of some services is very small, even in many cells, the traffic of this service is 0, so such services should be excluded from our clustering algorithm. Because there is no difference in itself, not excluding such input data will only increase the complexity of clustering and affect the results.
另外,有些数据业务在其特性上有相近之处,即其对无线信道资源的具有相似的需求,因此可将这些业务合并成一类业务进行处理。In addition, some data services have similar characteristics, that is, they have similar requirements on wireless channel resources, so these services can be combined into one type of service for processing.
本发明使用了K-means和two step两种聚类算法。使用数据挖掘工具(如:PASW modeler),导入预处理完成的数据,先利用Two step得到较合理的目标类别数,然后在K-means算法中设定该目标类别数,在每个记录后得到一个所属分类的标号,即所希望得到的小区类型编号。The present invention has used two kinds of clustering algorithms of K-means and two step. Use data mining tools (such as: PASW modeler), import the preprocessed data, first use Two step to get a more reasonable number of target categories, and then set the number of target categories in the K-means algorithm, and get after each record A label of the category it belongs to, that is, the number of the desired cell type.
对得到的小区类型编号的准确性进行验证。第一种验证手段是从数据挖掘方法的评判标准上去验证,通过对凝聚和分离的轮廓测量值的评估,来衡量分类的优劣。该指标大于0.25时,聚类结果属于尚好,若大于0.5,则属于良好了。第二种验证是手段是对于有特征的地理区域,是否所得到的小区类别具有较高的一致性。第三种验证手段是从网络指标入手,观察各个小区类型其指标呈现是否符合预期的业务特性。如果结果检验不合格,则重新选择合适的变量,或者调整聚类算法参数等,直到得到的结果能够从数学上和业务上被接受。Verify the accuracy of the obtained cell type number. The first verification method is to verify from the evaluation criteria of the data mining method, and to measure the pros and cons of the classification through the evaluation of the cohesive and segregated contour measurements. When the index is greater than 0.25, the clustering result is good, and if it is greater than 0.5, it is good. The second method of verification is whether the obtained cell types have a high consistency for a characteristic geographical area. The third verification method is to start with the network indicators and observe whether the indicators of each cell type meet the expected service characteristics. If the result test is unqualified, re-select the appropriate variable, or adjust the parameters of the clustering algorithm, etc., until the obtained result can be accepted mathematically and operationally.
针对每一类型小区,寻求适合该类小区的资源配置与主要质量指标之间关系。如图3所示,回归方法建立配置和参数与网络指标间的关联关系的过程分三步:计算TRF239;计算CDEF;计算CDED。通过计算TRF239,建立对网络指标TRF239的预测模型;通过计算TRF239,建立对配置参数CDEF的预测模型;通过计算TRF239,根据拥塞率计算相应的CDED参数配置。For each type of cell, the relationship between the resource configuration suitable for this type of cell and the main quality indicators is sought. As shown in Figure 3, the process of establishing the relationship between configuration and parameters and network indicators in the regression method is divided into three steps: calculating TRF239; calculating CDEF; and calculating CDED. By calculating TRF239, establish a prediction model for network index TRF239; by calculating TRF239, establish a prediction model for configuration parameter CDEF; by calculating TRF239, calculate the corresponding CDED parameter configuration according to the congestion rate.
TRF_239统计实际使用的下行数据业务时隙数,反映的是数据业务的无线资源实际使用情况。在特定的指标选取范围内可当作是数据无线资源的需求数。研究不同聚类的小区中TRF_239与各业务的构成及其他指标的对应关系,可用做后期业务增长或新增站点的无线资源需求的评估准则,方便资源需求的计算与规划。TRF_239 counts the number of time slots actually used for downlink data services, reflecting the actual use of radio resources for data services. Within a specific index selection range, it can be regarded as the required number of data wireless resources. Studying the corresponding relationship between TRF_239 and the composition of various services and other indicators in different clustered cells can be used as an evaluation criterion for the later service growth or wireless resource requirements of new sites, and facilitates the calculation and planning of resource requirements.
如图4所示,建立对网络指标TRF239的预测模型主要包括如下步骤:As shown in Figure 4, the establishment of a prediction model for the network indicator TRF239 mainly includes the following steps:
选定的预测自变量;对自变量进行数据转换;以自变量转换后的数据为输入,使用多元线性回归的算法,计算得到结果;对结果进行分析,如果达不到评价指标,则重新选择自变量,或者对自变量进行其它方式的数据转换,或者选择其他的拟合算法,至到达到评价指标。Selected predictive independent variable; perform data conversion on the independent variable; use the converted data of the independent variable as input, use the algorithm of multiple linear regression to calculate the result; analyze the result, if the evaluation index cannot be reached, re-select Independent variables, or perform other data conversion on the independent variables, or choose other fitting algorithms, until the evaluation index is reached.
关于选取关键指标参数。结合业务知识及相关性分析,最终选定预测自变量为:TBF_38C(Average DL TBF per timeslot,平均下行每时隙TBF数,TBF是Temporary Block Flow临时块流的缩写)、RLC_DL(Radio LinKControl_DownLinK,数据下行流量)、小区中各类业务的频次及流量占比等信息。About selecting key indicator parameters. Combined with business knowledge and correlation analysis, the final selected predictive variables are: TBF_38C (Average DL TBF per timeslot, the average downlink TBF per time slot, TBF is the abbreviation of Temporary Block Flow), RLC_DL (Radio LinKControl_DownLinK, data Downlink traffic), the frequency of various services in the community, and the proportion of traffic.
对自变量进行数据转换,使得经过转换后的数据与目标变量之间存在线性关系。可用的转换手段包括对数、二次、三次、反向、幂、S、增长、指数等。在本发明的方法的一个实施例中,对于TBF_38C使用幂转换。Data transformation is performed on the independent variable so that there is a linear relationship between the transformed data and the target variable. Available transformations include logarithmic, quadratic, cubic, inverse, power, S, growth, exponential, and more. In one embodiment of the method of the invention, power transformation is used for TBF_38C.
关于多元线性回归算法的选择。对于算法参数有四种,分别为:Enter,Step,Forward和Backward。本发明的方法的一个实施例中,选择Step进行拟合,对于每一类小区,算法选择的输入变量是有差异的。On the choice of multiple linear regression algorithm. There are four types of algorithm parameters, namely: Enter, Step, Forward and Backward. In one embodiment of the method of the present invention, Step is selected for fitting, and for each type of cell, the input variables selected by the algorithm are different.
关于对拟合结果进行分析。得到了拟合方程的同时,也可以同时得到一些评价拟合精度的主要指标,如R2等,如果拟合优度为0.80,则达到精度要求。如果达不到评价指标,那么需要重新选择自变量,或者对自变量进行处理,或者选择其他的拟合算法。On the analysis of fitting results. When the fitting equation is obtained, some main indicators for evaluating the fitting accuracy can also be obtained at the same time, such as R2, etc. If the goodness of fit is 0.80, the accuracy requirement is met. If the evaluation index cannot be reached, then the independent variable needs to be reselected, or the independent variable should be processed, or another fitting algorithm should be selected.
CDEF指缺省情况下用于数据业务的信道,即数据动态信道,当语音业务繁忙且语音信道占用达到一定比例时,其可转换为语音信道使用。在本发明的方法中,CDEF包含了CDED静态时隙,因此CDEF>=CDED。合理的CDEF设置值将使得小区减少升降域的次数,降低系统的系统负荷。CDEF refers to the channel used for data services by default, that is, the data dynamic channel. When the voice service is busy and the voice channel occupies a certain proportion, it can be converted to a voice channel for use. In the method of the present invention, CDEF includes CDED static time slot, so CDEF>=CDED. A reasonable CDEF setting value will enable the cell to reduce the number of lifting domains and reduce the system load of the system.
在得到TRF_239后,将其作为自变量,同时将升降域网络配置参数、小区话音单时隙负荷和数据单时隙负荷也作为自变量,使用线性回归的方法,建立其与CDEF间的关联关系,得到合理的CDEF配置值。After obtaining TRF_239, use it as an independent variable, and at the same time take the network configuration parameters of the lifting domain, cell voice single time slot load and data single time slot load as independent variables, and use the linear regression method to establish the correlation between it and CDEF , to get a reasonable CDEF configuration value.
CDEF是缺省的CS(Circuit Service,语音域)与PS(Packet Service数据域)域的边界,其设置具备如下特点:CDEF is the boundary of the default CS (Circuit Service, voice domain) and PS (Packet Service data domain) domains, and its settings have the following characteristics:
不会因为PS域内PS话务的冲击而频繁升降级;It will not be frequently upgraded due to the impact of PS traffic in the PS domain;
不会因为CS域内CS话务的冲击而频繁升降级;It will not be frequently downgraded due to the impact of CS traffic in the CS domain;
因为CS话务负荷算法的设置改变,CDEF的改变不会影响到CS的半速率占比;Because the setting of the CS traffic load algorithm is changed, the change of CDEF will not affect the half-rate ratio of CS;
因为CDEF不会影响到TRF_239以及数据流量,所以不会造成PDCH(Packet Data Channel,分组数据信道)使用效率的可观改变。Because CDEF will not affect TRF_239 and data traffic, it will not cause considerable changes in the efficiency of PDCH (Packet Data Channel, packet data channel).
CDED指专用于数据业务的信道,即数据静态信道,在任何情况下语音业务都不能占用,只分配给数据业务占用。CDED如果设置太大,在话音业务较高的情况将不能占用数据域更多的资源,可能引起拥塞。而CDED如果设置太小,则在话音业务较高的情况下,话音业务将会挤压数据动态信道,直到静态信道,过小的静态信态设置值则会引起数据业务的拥塞。CDED refers to a channel dedicated to data services, that is, a static data channel, which cannot be occupied by voice services under any circumstances and is only allocated to data services. If CDED is set too large, it will not be able to occupy more resources in the data domain when the voice traffic is high, which may cause congestion. And if CDED is set too small, then in the case of high voice traffic, the voice traffic will squeeze the data dynamic channel until the static channel, and too small static signal state setting value will cause data traffic congestion.
CDED的设置是为了最低限度地保证数据业务的使用,因此CDED的设置值即应研究在不引起小区的数据硬拥塞的情况下最小信道配置值。本发明的方法中将硬拥塞指标TBF_16选取0.5%-1%区间作为产生硬拥塞的临界。The setting of CDED is to ensure the use of data services at a minimum, so the setting value of CDED should study the minimum channel configuration value without causing hard data congestion in the cell. In the method of the present invention, the hard congestion index TBF_16 is selected from the range of 0.5%-1% as the threshold for hard congestion.
结合小区的话音业务,计算出话音需求的信道数(可根据目前应用较广泛的ERL-B算法)及数据业务需求的信道数(根据前面研究的数据信道资源需求结果),来给出小区增容或减容的建议,并根据新载频数投入规划配置新的CDED/CDEF(数据静态时隙/数据动态时隙)参数。Combined with the voice service of the cell, calculate the number of channels required for voice (according to the currently widely used ERL-B algorithm) and the number of channels required for data services (according to the results of data channel resource requirements studied earlier), to give the growth rate of the cell. Capacity or capacity reduction suggestions, and configure new CDED/CDEF (data static time slot/data dynamic time slot) parameters according to the new carrier frequency input plan.
记录观察小区资源配置调整前后一周的KPI(Key PerformanceIndicator,关键绩效指标法)变化,包括数据和语音。如指标变化不理想或者无法解释,则需要考虑调整参数选择,重新进行参数与网络指标之间的关联关系挖掘工作。在一个实际的项目中,利用本发明的小区数据信道配置方法,根据得到的各个小区的增减配信息,对相应小区做了配置的调整。对于需要减配的小区,其指标前后对比如错误!未找到引用源。图5至图8所示(对于每一对相互靠近的比对方块,左侧方块示意调整前,右侧方块示意调整后),可以看到,关键指标虽然略有恶化,但是全部符合网络质量指标考核的要求。这样即达到了保持业务质量,但节省信道,提高网络资源利用效率的目的。对于需要扩容的小区,其关键指标如图9至图12所示(对于每一对相互靠近的比对方块,左侧方块示意调整前,右侧方块示意调整后),均得到了提升,达到了指标考核的要求,改善了数据业务的质量,提高了用户感知。Record and observe the changes in KPI (Key Performance Indicator, key performance indicator method) of the week before and after the adjustment of the resource configuration of the community, including data and voice. If the index changes are unsatisfactory or cannot be explained, it is necessary to consider adjusting the parameter selection and re-mining the relationship between parameters and network indicators. In an actual project, the cell data channel configuration method of the present invention is used to adjust the configuration of the corresponding cell according to the obtained allocation information of each cell. For the cells that need to reduce the allocation, the before and after comparison of the indicators is wrong! Reference source not found. As shown in Figure 5 to Figure 8 (for each pair of comparison squares that are close to each other, the square on the left shows before adjustment, and the square on the right shows after adjustment), it can be seen that although the key indicators have deteriorated slightly, they all conform to the network quality Requirements for index assessment. In this way, the purpose of maintaining service quality, saving channels and improving network resource utilization efficiency is achieved. For a community that needs to be expanded, its key indicators are shown in Figures 9 to 12 (for each pair of comparison squares that are close to each other, the square on the left indicates before adjustment, and the square on the right indicates after adjustment), all of which have been improved to reach It meets the requirements of index assessment, improves the quality of data services, and enhances user perception.
生成小区信道规划原则,将该原则集成到软件中,以便于后续大规模部署。工具软件的界面设计要求简洁明朗,操作简单易用。需要具备与数据库的接口,可以从已有的数据库中取得需要的数据表。功能需满足数据导入、浏览、分析以及配置自动生成、结果导出等。Generate cell channel planning principles and integrate the principles into software for subsequent large-scale deployment. The interface design of the tool software is required to be concise and clear, and the operation is simple and easy to use. It needs to have an interface with the database, and the required data tables can be obtained from the existing database. The function needs to meet data import, browsing, analysis, configuration automatic generation, result export, etc.
采用决策树方法得到小区类型映射规则。在根据小区业务信息数据,通过聚类方法得到小区类型后,为了能推广使用,需要能将各小区的业务特征与所属小区类型的规则确定下来。这样只要有新的数据输入,就可以立刻得到其所属的小区类型。The cell type mapping rules are obtained by using the decision tree method. After the cell type is obtained through the clustering method according to the cell service information data, in order to be popularized and used, it is necessary to be able to determine the service characteristics of each cell and the rules of the cell type it belongs to. In this way, as long as there is new data input, the cell type to which it belongs can be obtained immediately.
利用决策树方法,通过训练小区的业务特征数据,来找出其与小区类型之间的对应关系。本发明的方法的一个实施例中采用C5.0的决策树算法,实现对所有小区及可用小区类型之间的有效划分。Using the decision tree method, by training the service characteristic data of the cell, find out the corresponding relationship between it and the cell type. In one embodiment of the method of the present invention, the decision tree algorithm of C5.0 is adopted to realize effective division among all cells and available cell types.
根据小区业务数据,采用数据挖掘工具中的决策树方法得到小区类型映射规则集,记录小区的业务特征数据与小区类型之间的对应关系,其中规则集全部以If…then…else的方式来表达。因此,在工具中,首先通过固化的规则集,实现了由输入的小区特征信息到小区类型的映射。然后通过之前得到的适合各个类型小区的回归模型得到适合该类小区,并针对各个小区不同业务流量的合理信道配置参数。According to the business data of the community, the decision tree method in the data mining tool is used to obtain the mapping rule set of the community type, and the corresponding relationship between the service characteristic data of the community and the type of the community is recorded, and the rule set is all expressed in the form of If...then...else . Therefore, in the tool, the mapping from the input cell feature information to the cell type is realized first through the solidified rule set. Then, through the previously obtained regression model suitable for each type of cell, the reasonable channel configuration parameters suitable for this type of cell and for different service flows of each cell are obtained.
本发明还公布了一种小区数据信道配置系统,如图13所示,该系统包括:数据采集模块、小区分类模块和配置模块;数据采集模块,用于采集小区业务数据;小区分类模块,用于根据数据采集模块所采集的小区业务数据,将业务特性相同的小区归为一类;配置模块,用于针对小区分类模块所划分的每一类型的小区,建立对应的信道和参数配置与网络指标之间的关联关系。The present invention also discloses a community data channel configuration system, as shown in Figure 13, the system includes: a data collection module, a community classification module and a configuration module; a data collection module for collecting community business data; a community classification module for Based on the cell service data collected by the data collection module, the cells with the same service characteristics are classified into one category; the configuration module is used to establish corresponding channel and parameter configurations and network for each type of cell divided by the cell classification module Relationships between indicators.
一种小区数据信道配置系统,还包括评测模块,用于根据针对每一类型的小区的信道和参数配置与网络指标之间的关联关系,对对应小区进行资源配置后,评测小区资源配置调整前后关键绩效指标的变化,如果不理想,则调用配置模块重新建立信道和参数配置与网络指标之间的关联关系,至到对小区资源配置调整前后关键绩效指标的变化评测的结果理想。A cell data channel configuration system, further comprising an evaluation module, which is used to evaluate the resource configuration before and after adjustment of the resource configuration of the corresponding cell according to the association relationship between the channel and parameter configuration for each type of cell and the network index If the change of key performance indicators is unsatisfactory, call the configuration module to re-establish the correlation between channel and parameter configuration and network indicators, until the evaluation result of the change of key performance indicators before and after the adjustment of cell resource configuration is satisfactory.
一种小区数据信道配置系统,还包括小区类型映射规则集生成模块,用于根据小区业务数据,采用决策树方法得到小区类型映射规则集。A cell data channel configuration system further includes a cell type mapping rule set generating module, which is used to obtain the cell type mapping rule set by adopting a decision tree method according to cell service data.
综上所述,在本发明中,采用所述的一种小区数据信道配置方法和系统,能够对数据业务信道进行合理规划,既保证保障数据业务的质量,提高用户感知,同时又尽可能地提高数据信道的利用效率,提升话音业务的质量。To sum up, in the present invention, by adopting the method and system for configuring a cell data channel, the data service channel can be reasonably planned, which not only guarantees the quality of the data service, improves user perception, but also maximizes the user experience as much as possible. Improve the utilization efficiency of data channels and improve the quality of voice services.
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