WO2014101202A1

WO2014101202A1 - Multiple-line crosstalk testing method, device and system

Info

Publication number: WO2014101202A1
Application number: PCT/CN2012/088077
Authority: WO
Inventors: 涂建平
Original assignee: 华为技术有限公司
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2014-07-03
Also published as: CN103229472A; CN103229472B

Abstract

Provided are a multiple-line crosstalk testing method, device and system. The method includes: configuring corresponding sub-carrier testing sequence for each one of multiple tested lines, the sub-carrier testing sequence comprising at least one shielding frequency point where the transmission of sub-carrier signal of the corresponding frequency is shielded; controlling a sending end of the each tested line to upload a sub-carrier testing sequence corresponding to the each tested line, and sending the sequence to a corresponding receiving end through the each tested line; collecting operating parameter information of the each tested line; computing a crosstalk level coefficient between each pair of the multiple tested lines according to the received operating parameter information through the multiple tested lines. The present invention can test multiple lines at the same time and accomplish the crosstalk test rapidly and accurately, whereas the tested line can still operate normally, thus making a small impact on user's service.

Description

多线路串扰测试方法、装置及*** Multi-line crosstalk test method, device and system

技术领域 Technical field

本发明涉及通信技术领域，尤其涉及一种多线路串扰测试方法、装置及 ***。背景技术 The present invention relates to the field of communications technologies, and in particular, to a multi-line crosstalk testing method, apparatus, and system. Background technique

数字用户线（Digital Subscriber Line, DSL )技术是一种通过电话双绞线，即无屏蔽双绞线（Unshielded Twist Pair, UTP )进行数据传输的高速传输技术，包括非对称数字用户线（ Asymmetrical Digital Subscriber Line, ADSL ) , 甚高速数字用户线（Very_high_bit_rate Digital Subscriber Une, VDSL)、基于综合业务数字网 ( Integrated Services Digital Network, ISDN) 的用户数字线（ISDN Digital Subscriber Line, IDSL ) 和单线对高速数字用户线 ( Single-pair High-bit-rate Digital Subscriber Line, SHDSL ) 等。 Digital Subscriber Line (DSL) technology is a high-speed transmission technology for data transmission over a telephone twisted pair, Unshielded Twist Pair (UTP), including Asymmetric Digital Subscriber Line (Asymmetrical Digital). Subscriber Line, ADSL), Very High-speed Digital Subscriber Line (VDSL), Integrated Services Digital Network (ISDN)-based ISDN Digital Subscriber Line (IDSL) and single-pair high-speed digital Single-pair High-bit-rate Digital Subscriber Line (SHDSL).

在各种数字用户线技术（xDSL) 中，采用通带传输的 DSL利用频分复用技术使得 DSL与传统电话业务（Plain Old Telephone Service, POTS )共存于同一对双绞线上，其中 DSL占据高频段， POTS占用 4KHz以下基带部分， POTS 信号与 DSL信号通过分离 /整合器（Splitter)进行分离或合并。通带传输的 xDSL采用离散多音频调制（Discrete Multi- Tone Modulation, DMT )技术进行调制和解调。 In various digital subscriber line technologies (xDSL), DSL using passband transmission uses frequency division multiplexing technology to make DSL and the traditional telephone service (POTS) coexist on the same pair of twisted pairs, where DSL occupies In the high frequency band, the POTS occupies the baseband portion below 4 kHz, and the POTS signal and the DSL signal are separated or combined by a splitter/splitter. The passband transmission xDSL uses Discrete Multi-Tone Modulation (DMT) technology for modulation and demodulation.

用户电缆基本上都包含多对（ 25对或以上）双绞线，在各个双绞线上可能运行了多种不同的业务，由于电磁感应原理，各种类型的 xDSL同时工作的时候互相之间会产生串扰（Crosstalk) , 其中某些线路会因串扰问题性能急剧下降；尤其当线路比较长时，某些线路甚至根本不能开通任何形式的 DSL 业务。串扰是当前 DSL modern (如 ADSL, VDSL ) ***中影响用户速率的主要因素，可分为远端串扰（FEXT )和近端串扰（NEXT )，通常 NEXT 的影响要比 FEXT大，但在 ADSL/VDSL中，由于采用了上、下行频域分隔和频分复用技术， FEXT的影响要远大于 NEXT , FEXT会严重影响线路的传输性能。 User cables basically contain multiple pairs (25 pairs or more) of twisted pairs. Different twisted pairs may run a variety of different services. Due to the principle of electromagnetic induction, various types of xDSL work simultaneously with each other. Crosstalk will occur, and some of the lines will experience a sharp drop in performance due to crosstalk problems; especially when the line is long, some lines may not even be able to open any form of DSL at all. business. Crosstalk is the main factor affecting user rate in current DSL modern (such as ADSL, VDSL) systems. It can be divided into far-end crosstalk (FEXT) and near-end crosstalk (NEXT). Usually NEXT has a greater impact than FEXT, but in ADSL/ In VDSL, due to the use of uplink and downlink frequency domain separation and frequency division multiplexing technology, the impact of FEXT is much greater than NEXT, and FEXT will seriously affect the transmission performance of the line.

针对串扰问题，目前大多数运营商采用动态频谱管理方法（Dynami c For crosstalk problems, most operators currently use dynamic spectrum management methods (Dynami c

Spec t rum Management-DSM ) 来避免设备之间的串扰问题。 DSM的主要目的是通过线路之间的串扰信息来优化和控制线路发送功率谱使同一捆电缆中的线路在工作过程中受到尽量小的串扰影响，从而提升线路稳定性、提高线路的可达速率和降低功率消耗。 Spec t rum Management-DSM ) to avoid crosstalk between devices. The main purpose of DSM is to optimize and control the transmission power spectrum of the line through the crosstalk information between the lines so that the lines in the same bundle of cables are affected by as little crosstalk as possible during the operation, thereby improving the stability of the line and increasing the reachability of the line. And reduce power consumption.

然而实际的线路情况非常复杂，在局方的配线架，相邻端口并不是按照相邻线序来映射绑定的，相邻的端口可能不在一个线捆中，而不相邻的端口可能在同一线捆中，而 DSM是对同一捆线中的端口进行优化。现网上有几百万的端口，线路管理***必须知道哪些端口属于同一捆线，才能进行 DSM优化。有些局方提供的布线的线路拓朴信息，有些局方在布线时并没有记录相关的线路拓朴信息。但是局方的记录信息并不是非常准确的，当线路发生变化时，局方的信息库并不能及时更新。因而在实际应用中，时常需要测试各线路的串扰影响，用以对各线路进行动态频语优化，尽量减小串扰的影响。 However, the actual line condition is very complicated. In the distribution frame of the bureau, the adjacent ports are not mapped according to the adjacent line order. The adjacent ports may not be in one line bundle, and the adjacent ports may not be adjacent. In the same bundle, DSM optimizes the ports in the same bundle. There are millions of ports on the network, and the line management system must know which ports belong to the same bundle for DSM optimization. Some of the route topology information provided by the Administrator, some of the Bureau did not record the relevant route topology information when wiring. However, the record information of the bureau is not very accurate. When the line changes, the information bank of the bureau cannot be updated in time. Therefore, in practical applications, it is often necessary to test the crosstalk effect of each line to optimize the dynamic frequency of each line to minimize the influence of crosstalk.

现有的串扰测试方法主要通过测量线路上有无串扰时静默噪声的差别，来测量串扰的大小。在测试过程中，需要分别单独激活每条线路，测量该线路在无其它线路串扰情况下的静默噪声。具体地，依次选定其中一条线路作为干扰线路，并激活，把其它线路作为受扰线路，逐个激活受扰线路，测量受扰线路在该串扰线路激活情况下的静默噪声，通过两次静默噪声的差，两两测量该干扰线路对其它受扰线路的串扰噪声。然而，这种方式只能逐一单个地测试其中一条线路，而且在测试时，其他线路不能工作，必须处于静默的状态，而且，逐一测量耗时长，需要频繁去激活线路，尤其对于线路规模较大时，需要测量的次数巨大，对业务影响较大。发明内容 The existing crosstalk test method mainly measures the size of crosstalk by measuring the difference of silence noise when there is crosstalk on the line. During the test, each line needs to be individually activated to measure the quiet noise of the line without other line crosstalk. Specifically, one of the lines is sequentially selected as the interference line, and activated, and the other line is used as the victim line, and the victim line is activated one by one, and the silent noise of the victim line in the activation condition of the crosstalk line is measured, and the silence noise is passed twice. The difference between the two, the two, the crosstalk noise of the interference line to other disturbed lines. However, this method can only test one of the lines individually, and other lines cannot work during the test, and must be in a silent state. Moreover, the measurement time is one by one, and the line needs to be activated frequently, especially for the line size. At the time, the number of measurements required is huge, which has a great impact on the business. Summary of the invention

有鉴于此，本发明的目的是提供一种多线路串扰测试方法、装置及***，可以同时进行多条线路的测试，能够快速准确地完成串扰测试，被测线路可以正常工作，对用户的业务影响小。 In view of this, the object of the present invention is to provide a multi-line crosstalk test method, device and system, which can test multiple lines at the same time, can complete crosstalk test quickly and accurately, and the tested line can work normally, and the service to the user The impact is small.

为实现上述目的，本发明第一方面提供了一种多线路串扰测试方法，所述方法包括： To achieve the above object, a first aspect of the present invention provides a multi-line crosstalk test method, the method comprising:

为多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； Configuring a corresponding subcarrier test sequence for each of the plurality of tested lines, the subcarrier test sequence includes at least one masking frequency point, and shielding the subcarrier signal corresponding to the frequency at the masking frequency point ;

控制所述每条被测线路的发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述每条被测线路的接收端； Controlling, by the transmitting end of each of the tested lines, the subcarrier test sequence corresponding to each of the tested lines, and transmitting the received test line to the corresponding receiving of each tested line End

采集所述每条被测线路的运行参数信息； Collecting operation parameter information of each tested line;

根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 And calculating, according to the operation parameter information received by the plurality of tested lines, a crosstalk level coefficient between the two tested lines.

结合第一方面，在第一方面的第一种可能的实施方式中，所述为多条被测线路中的每条被测线路配置对应的子载波测试序列，包括： With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining, by using each of the plurality of tested lines, a corresponding subcarrier test sequence includes:

获取所述多条被测线路的线路数量 K; Obtaining the number of lines of the plurality of lines to be tested K;

针对 K条所述被测线路设置所述屏蔽频点，生成 K个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 κ。 Setting the shielding frequency points for the K-tested lines to generate K different sub-carrier test sequences, wherein the number of the shielding frequency points set in at least one of the sub-carrier test sequences is greater than or equal to The number of lines is κ.

结合第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，在所述获取所述多条被测线路的线路数量 Κ时，还包括： With reference to the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, when the acquiring the number of lines of the multiple tested lines, the method further includes:

获取所述多条被测线路的线路参数，所述线路参数包括以下所列中的一种或任意组合：子载波宽度、线路长度、平均线路衰减、电气长度、最大可达速率；所述针对 K条所述被测线路设置所述屏蔽频点，生成 K个不同的子载波测试序列，包括： Obtaining line parameters of the plurality of tested lines, where the line parameters include one or any combination of the following: a subcarrier width, a line length, an average line attenuation, an electrical length, and a maximum reachable rate. The masking frequency points are set for the K lines to be tested, and K different subcarrier test sequences are generated, including:

根据获取的所述线路参数的大小，对 K条所述被测线路进行排序；根据所述排序的结果，依次对 K条所述被测线路设置屏蔽频点，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 K个不同的子载波测试序列。 And sorting the K lines to be tested according to the obtained size of the line parameter; according to the sorting result, setting a shielding frequency point to the K lines to be tested, the number of the shielding frequency points in turn The masking frequency point set by the last line to be tested includes all the masking frequency points set by the previous line to be tested, and K different subcarrier test sequences are formed.

结合第一方面的第一种可能或第二种可能的实施方式，在第一方面的第三种可能的实施方式中，所述 κ 个不同的子载波测试序列设置的屏蔽频点以 κ*κ阶梯方式分布，具体为： With reference to the first possible or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the shielding frequency set by the κ different subcarrier test sequences is κ* κ ladder way distribution, specifically:

每一行表示一个子载波测试序列中包含的屏蔽频点，其中，第 1行表示第 1个子载波测试序列包含 1个屏蔽频点 ^第 Κ行表示第 Κ个子载波测试序列包括 Κ个屏蔽频点 _ηι〜 η_κ。 Each row represents a masked frequency point included in a subcarrier test sequence, wherein the first row indicates that the first subcarrier test sequence includes one masked frequency point. The second row indicates that the second subcarrier test sequence includes one masking frequency point. _Ηι ～ η _κ .

结合第一方面的第三种可能的实施方式，在第一方面的第四种可能的实施方式中，所述运行参数信息包括线路衰减 H_i ( )、发送功率谱密度 ( )和接收端的噪声 R_XN₀i_Sei (n_k、，其中，表示所述子载波测试序列的第 k个屏蔽频点， H_{h ;}( )表示在第 k个屏蔽频点时第 i条被测线路的线路衰减（即传输函数），表示第 j 条被测线路在第 k 个屏蔽频点的发送功率谱密度，表示第 i条被测线路在第 k个屏蔽频点的接收端的噪声， 1 i K，With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the operating parameter information includes a line attenuation H _i ( ), a transmit power spectral density ( ), and a noise at the receiving end R _X N ₀ i _Sei (n _k , where represents the kth masking frequency of the subcarrier test sequence, H _{h ;} ( ) represents the line of the ith measured line at the kth masking frequency point Attenuation (ie, transfer function), indicating the transmission power spectral density of the jth measured line at the kth shielding frequency point, indicating the noise of the i-th measured line at the receiving end of the kth shielding frequency point, 1 i K,

K k < K ， 1 < j < k-1 ； K k < K , 1 < j < k-1 ;

所述根据各所述被测线路对应接收到的所述运行参数信息，计算各所述被测线路两两之间的串扰水平系数，具体为：根据方程组(八/- )²-| ■Y_ja -S_j n_k) + a_i = RxNoise^) ,计算得到串扰水平系数〜 , 其中，表示第 j条被测线路对第 i条被测线路的串扰水平系数， Δ/表示子载波间隔， 2 k K ， k i K。 And calculating, according to the operating parameter information received by each of the tested lines, a crosstalk level coefficient between each of the tested lines, specifically: According to the equations (8/-) ² -| ■ Y _j a -S _j n _k ) + a _i = RxNoise^) , the crosstalk horizontal coefficient ~ is calculated, where, the jth measured line is the ith Measure the crosstalk level factor of the line, Δ/ denotes the subcarrier spacing, 2 k K , ki K.

结合第一方面的第四种可能的实施方式，在第一方面的第五种可能的实施方式中，在所述根据方程组 (Δ/ · )² · IH, , (n_k )|² · Z α,.. · Sj (n_k ) + σ, = RxNois_ei (n_k ) , 计算得到串扰水平系数〜之前，还包括： In conjunction with the fourth possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the set according to the equation (Δ/ · ) ² · IH, , (n _k )| ² · Z α,.. · Sj (n _k ) + σ, = RxNois _ei (n _k ) , before calculating the crosstalk level coefficient ~, also includes:

获得所述每条测试线路的无串扰时的背景噪声； Obtaining background noise without crosstalk of each test line;

所述背景噪声通过以下所列中的任意一种获得： The background noise is obtained by any of the following:

根据公式 ·

, 计算出所述每条测试线路的无串扰时的背景噪声； According to the formula

Calculating the background noise of the test line without crosstalk;

或者，根据公式 = ι)· "ι) , 计算出所述每条测试线 Or, according to the formula = ι)· "ι), calculate each test line

SNR₍ {η_λ ) 路的无串扰时的背景噪声； Background noise without SNR on the SNR ₍ {η _λ ) path;

其中，表示第 i条被测线路在第 1个屏蔽频点的背景噪声，表示第 i条被测线路在第 k个屏蔽频点的背景噪声， ^WR,.^)表示所述运行参数信息中的第 i条被测线路在第 1个屏蔽频点的信噪比。 Wherein, the background noise of the i-th measured line at the first masking frequency point indicates the background noise of the i-th measured line at the kth masking frequency point, ^WR, .^) indicates the operating parameter information The signal-to-noise ratio of the first shielded frequency point of the i-th line under test.

结合第一方面的第四种可能的实施方式，在第一方面的第六种可能的实施方式中，在所述计算得到串扰水平系数^之后，还包括： With reference to the fourth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, after the calculating the crosstalk level coefficient ^, the method further includes:

根据对称性公式^ 计算得到第 i条被测线路对第 j条被测线路的串扰水平系数^, _;。 The symmetry is calculated formula ^ i th horizontal test line crosstalk coefficient of the j-th test line _^,;.

结合第一方面的第四种可能的实施方式，在第一方面的第七种可能的实施方式中，在所述根据方程组 (Δ/ . )². RxNoise_f (n_k ) ,

In conjunction with the fourth possible implementation of the first aspect, in a seventh possible implementation of the first aspect, in the system of equations (Δ/.) ² . RxNoise _f (n _k )

计算得到串扰水平系数〜之前，还包括： Calculated to get the crosstalk level coefficient ~ before, also includes:

获取已知的串扰水平系数；所述根据方程组(八/ - )² -| ， _; (n_k )|² · ¾ a. . - Sj (n_k ) + σ_; = RxNoise, (n_k ) , 计算得到 j=l Obtain a known crosstalk level coefficient; According to the system of equations (8/-) ² -| , _; (n _k )| ² · 3⁄4 a. . - Sj (n _k ) + σ _; = RxNoise, (n _k ) , calculate j=l

串扰水平系数 ^ , 具体为： The crosstalk level coefficient ^ , specifically:

将所述已知的串扰水平系数作为方程组 Using the known crosstalk level as the equation group

(Af - n_k f - \H. _; (n_k )|² · ^ a. . - 5 . (n_k ) + σ_; = RxNoise, (n_k )的输入，并根据所述多条被测线路对应接收到的所述运行参数信息，计算出剩余的所述多条被测线路两两之间的串扰水平系数。 (Af - n _k f - \H. _; (n _k )| ² · ^ a. . - 5 . (n _k ) + σ _; = RxNoise, (n _k ) input, and measured according to the multiple The line corresponds to the received operating parameter information, and calculates a crosstalk level coefficient between the remaining plurality of tested lines.

第二方面，本发明还提供了一种多线路串扰测试装置，所述装置包括：配置单元，用于为多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； In a second aspect, the present invention further provides a multi-line crosstalk test apparatus, where the apparatus includes: a configuration unit, configured to configure a corresponding subcarrier test sequence for each of the plurality of tested lines, The subcarrier test sequence includes at least one masking frequency point, and the subcarrier signal for transmitting the corresponding frequency is shielded at the masking frequency point;

发送单元，用于在所述每条被测线路中加载所述配置单元配置的所述子载波测试序列，并经由所述每条被测线路发送； a sending unit, configured to load, in each of the tested lines, the subcarrier test sequence configured by the configuration unit, and send the test by using each of the tested lines;

采集单元，用于采集所述每条被测线路在所述发送单元加载并发送所述子载波测试序列后的运行参数信息； An acquisition unit, configured to collect operation parameter information after each of the tested lines loads and sends the subcarrier test sequence in the sending unit;

计算单元，用于根据所述采集单元采集的所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 And a calculating unit, configured to calculate a crosstalk level coefficient between the two tested lines according to the received operating parameter information corresponding to the plurality of measured lines collected by the collecting unit.

结合第二方面，在第二方面的第一种可能的实施方式中，所述配置单元包括： With reference to the second aspect, in a first possible implementation manner of the second aspect, the configuring unit includes:

获取子单元，用于获取所述多条被测线路的线路数量 K ; Obtaining a subunit, configured to acquire the number of lines K of the plurality of tested lines;

设置子单元，用于根据获取子单元获取的线路数量 K ,针对 K条所述被测线路设置所述屏蔽频点，生成 κ 个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量〖。 a setting subunit, configured to set the shielding frequency point for the K lines to be tested according to the number K of lines acquired by the obtaining subunit, to generate κ different subcarrier testing sequences, wherein at least one of the subcarriers is generated The number of the masking frequency points set in the test sequence is greater than or equal to the number of the lines.

结合第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述获取子单元还用于获取所述多条被测线路的线路参数，所述线路参数包括以下所列中的一种或任意组合： With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the acquiring subunit is further configured to acquire line parameters of the multiple tested lines, Line parameters include one or any combination of the following:

子载波宽度、线路长度、平均线路衰减、电气长度、最大可达速率；所述配置单元还包括： Subcarrier width, line length, average line attenuation, electrical length, maximum reachable rate; the configuration unit further includes:

排序子单元，用于根据所述获取子单元获取的所述线路参数的大小，对 K 条所述被测线路进行排序； a sorting subunit, configured to sort the K lines to be tested according to the size of the line parameter acquired by the acquiring subunit;

所述设置子单元根据所述排序子单元排序的结果，依次对 K条所述被测线路设置屏蔽频点，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 K 个不同的子载波测试序列。 The setting subunit sets a masking frequency point to the K lines to be tested according to the sorting result of the sorting subunit, the number of the shielding frequency points is sequentially increased, and the shielding of the next measured line is set. The frequency point includes all the masking frequency points set by the previous line under test, forming K different subcarrier test sequences.

结合第二方面的第一种可能或第二种可能的实施方式，在第二方面的第三种可能的实施方式中，所述设置子单元设置的 κ个不同的子载波测试序列设置的屏蔽频点以 κ*κ阶梯方式分布，具体为： With reference to the first possible or second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the shielding of the κ different subcarrier test sequence set by the setting subunit is set The frequency points are distributed in a κ*κ step manner, specifically:

结合第二方面的第三种可能的实施方式，在第二方面的第四种可能的实施方式中，所述采集单元采集的运行参数信息包括线路衰减 H_i ( )、发送功率谱密度和接收端的噪声其中，表示所述子载波测试序列的第 k个屏蔽频点， H 表示在第 k个屏蔽频点时第 i条被测线路的线路衰减（即传输函数），表示第 j条被测线路在第 k个屏蔽频点的发送功率谱密度， R_XNoi_Sei (n_k )表示第 i条被测线路在第 k个屏蔽频点的接收端的噪声， 1 i K ， K k < K ， 1 < j < k-1 ；所述计算单元具体用于根据方程组 (Af-n_kf , 计算得到串扰水平系数〜

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the operating parameter information collected by the collecting unit includes line attenuation H _i ( ), transmission power spectral density, and receiving The noise of the terminal, wherein the k-th shielding frequency point of the sub-carrier test sequence is represented, and H represents the line attenuation (ie, the transmission function) of the ith-tested line at the k-th shielding frequency point, indicating that the j-th column is measured. The transmission power spectral density of the line at the kth shielding frequency point, R _X Noi _Sei (n _k ), represents the noise of the i-th measured line at the receiving end of the kth shielding frequency point, 1 i K , K k < K , 1 < j <k-1; The calculating unit is specifically configured to calculate a crosstalk horizontal coefficient according to a system of equations (Af-n _k f

, 其中， ^表示第 j条被测线路对第 i条被测线路的串扰水平系数， Δ/表示子载波间隔， 2 k K ， k i K。 Where ^ denotes the crosstalk level coefficient of the jth line under test for the ith line under test, Δ/ denotes the subcarrier spacing, 2 k K , k i K.

结合第二方面的第四种可能的实施方式，在第二方面的第五种可能的实施方式中，所述计算单元还包括： With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the calculating unit further includes:

第一计算子单元，用于获得所述每条测试线路的无串扰时的背景噪声 ; 所述第一计算子单元根据公式 * σ,(¾) * σ = RxNoise^) , 计算出所述每条测试线路的无串扰时的背景噪声；或者，所述第一计算子单元根据公式 ₍7,( ) ₍7 ₁)=^^^ , 计 a first calculating subunit, configured to obtain background noise without crosstalk of each test line; the first calculating subunit calculates the each according to a formula * σ, (3⁄4) * σ = RxNoise^) Background noise of the test line without crosstalk; or, the first calculation subunit is calculated according to the formula ₍ 7, ( ) ₍ 7 ₁ )=^^^

SNR_{ {η_λ ) 算出所述每条测试线路的无串扰时的背景噪声； SNR _{ {η _λ ) calculating the background noise of the test line without crosstalk;

其中， σ, ^)表示第 i条被测线路在第 1个屏蔽频点的背景噪声， σ, ^表示第 i条被测线路在第 k个屏蔽频点的背景噪声， ^WR,^)表示所述运行参数信息中的第 i条被测线路在第 1个屏蔽频点的信噪比。 Where σ, ^) represents the background noise of the i-th measured line at the first masking frequency point, σ, ^ represents the background noise of the i-th measured line at the kth masking frequency point, ^WR, ^) Indicates a signal-to-noise ratio of the ith measured channel at the first masking frequency point in the operation parameter information.

结合第二方面的第四种可能的实施方式，在第二方面的第六种可能的实施方式中，所述计算单元还用于根据计算得到的串扰水平系数^和对称性公式 _Ωίί=Ωί i , 计算得到第 i条被测线路对第 j条被测线路的串扰水平系数 a 。 In conjunction with the fourth possible implementation of the second aspect, in a sixth possible implementation manner of the second aspect, the calculating unit is further configured to calculate a crosstalk level coefficient and a symmetry formula _{Ω ίί= Ωί} i Calculate the crosstalk level coefficient a of the ith measured line to the jth measured line.

结合第二方面的第四种可能的实施方式，在第二方面的第七种可能的实施方式中，所述装置还包括： With reference to the fourth possible implementation of the second aspect, in a seventh possible implementation manner of the second aspect, the device further includes:

检测单元，用于获取已知的串扰水平系数； a detecting unit, configured to acquire a known crosstalk level coefficient;

所述计算单元将所述检测单元获取的所述已知的串扰水平系数作为方程组 (Δ/ · )² -|H. ,( )|² Α( ) + · =RxNoise_i n_k)的输入，并根据所述采集单元采集的所述运行参数信息，计算出剩余的所述多条被测线路两两之间的串扰水平系数。第三方面，本发明还提供了一种多线路串扰测试***，所述***包括：频谱管理中心单元、多条被测线路对应的发送端和接收端； The calculating unit uses the known crosstalk horizontal coefficient obtained by the detecting unit as an input of a system of equations (Δ/ · ) ² -|H. , ( )| ² Α ( ) + · = RxNoise _i n _k ) And calculating, according to the operating parameter information collected by the collecting unit, a crosstalk horizontal coefficient between the remaining plurality of tested lines. In a third aspect, the present invention further provides a multi-line crosstalk test system, where the system includes: a spectrum management center unit, a plurality of transmitting ends and a receiving end corresponding to the tested line;

频谱管理中心单元为所述多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； The spectrum management center unit configures a corresponding subcarrier test sequence for each of the plurality of tested lines, where the subcarrier test sequence includes at least one masked frequency point, and the shielded frequency point is shielded and transmitted. a subcarrier signal corresponding to the frequency;

所述每条被测线路的所述发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述接收端； The transmitting end of each of the tested lines loads the subcarrier test sequence corresponding to each of the tested lines, and sends the subcarrier test sequence to the corresponding receiving end via the each tested line;

频谱管理中心单元采集所述每条被测线路的运行参数信息，并根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 The spectrum management center unit collects the operation parameter information of each of the tested lines, and calculates crosstalk between the two tested lines according to the operation parameter information received by the plurality of measured lines. Horizontal factor.

结合第三方面，在第三方面的第一种可能的实施方式中，所述频谱管理中心单元获取所述多条被测线路的线路数量 K,并针对 K条所述被测线路设置所述屏蔽频点，生成 κ 个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 κ。 With reference to the third aspect, in a first possible implementation manner of the third aspect, the spectrum management center unit acquires a number of lines K of the plurality of tested lines, and sets the line for the K lines to be tested. Shielding frequency points, generating κ different subcarrier test sequences, wherein the number of the mask frequency points set in at least one of the subcarrier test sequences is greater than or equal to the number of lines κ.

本发明提供的多线路串扰测试方法、装置及***，利用子载波屏蔽（ tone blackout )设置不同样式的子载波的屏蔽频点，构造出不同的子载波测试序歹 ij , 利用各序列的不相关性，计算得到被测线路两两之间的串扰水平系数，在每条被测线路上只需要传输一次子载波测试序列即可，可以同时进行多条线路的测试，能够快速准确地完成串扰测试，被测线路可以正常工作，对用户的业务影响小。附图说明 The multi-line crosstalk test method, device and system provided by the invention use sub-carrier shielding (tone blackout) to set shielding frequency points of different styles of sub-carriers, construct different sub-carrier test sequences 歹ij, and use each sequence irrelevant Sexuality, calculate the crosstalk level coefficient between the two lines to be tested, and only need to transmit the subcarrier test sequence once on each line to be tested. It can test multiple lines at the same time, and can complete the crosstalk test quickly and accurately. The tested line can work normally and has little impact on the user's business. DRAWINGS

图 1为本发明提供的多线路串扰测试方法所基于的多路 DSL接入***的示意图； 1 is a schematic diagram of a multi-channel DSL access system based on a multi-line crosstalk test method provided by the present invention;

图 2为本发明实施例一提供的多线路串扰测试方法流程图； 2 is a flowchart of a multi-line crosstalk test method according to Embodiment 1 of the present invention;

图 3为本发明实施例一提供的下行方向的子载波测试序列的示意图；图 4为本发明实施例二提供的多线路串扰测试方法流程图； 3 is a schematic diagram of a subcarrier test sequence in a downlink direction according to Embodiment 1 of the present invention; 4 is a flowchart of a multi-line crosstalk test method according to Embodiment 2 of the present invention;

图 5为本发明实施例三提供的多线路串扰测试装置示意图； 5 is a schematic diagram of a multi-line crosstalk test apparatus according to Embodiment 3 of the present invention;

图 6为本发明实施例四提供的多线路串扰测试装置示意图； 6 is a schematic diagram of a multi-line crosstalk test apparatus according to Embodiment 4 of the present invention;

图 7为本发明实施例五提供的多线路串扰测试***的示意图。具体实施方式 FIG. 7 is a schematic diagram of a multi-line crosstalk test system according to Embodiment 5 of the present invention. detailed description

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。 DSL接入复用器（DSL Access Multiplexer, DSLAM )是提供多路 DSL接入的***，图 1是本发明的多线路串扰测试方法所基于的多路 DSL接入*** 的示意图，如图 1所示，该***包括用户端 DSLAM120和局端 DSLAM150。 The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments. A DSL Access Multiplexer (DSLAM) is a system for providing multiple DSL access. FIG. 1 is a schematic diagram of a multi-channel DSL access system based on the multi-line crosstalk test method of the present invention, as shown in FIG. The system includes a subscriber end DSLAM 120 and a central office DSLAM 150.

用户端 DSLAM 120包括用户端收发单元 121和分离 /整合器 122, 在上行方向，用户端收发单元 121接收来自计算机 110的 DSL信号并对所收到的信号进行放大处理，将处理后的 DSL信号发送至分离 /整合器 122; 分离 /整合器 122将来自用户端收发单元 121的 DSL信号和电话终端 130的 POTS信号进行整合处理；整合后的信号通过多路的 UTP 140的传输，由局端 DSLAM 150 中的分离 /整合器 151接收；分离 /整合器 151将所接收的信号进行分离，将其中的 POTS信号发送至公用电话交换网（Public Switched Telephone Network, PSTN) 160, 将其中的 DSL信号发送至 DSLAM150的收发单元 152, 收发单元 152 再将所收到的信号进行放大处理后发送至网络管理*** （Network Management System, NMS) 170。在信号的下行方向，则信号按照与上述相反的顺序进行传输。 The client DSLAM 120 includes a client transceiver unit 121 and a split/integrator 122. In the uplink direction, the client transceiver unit 121 receives the DSL signal from the computer 110 and amplifies the received signal to process the processed DSL signal. Sending to the split/consolidator 122; the split/conformer 122 integrates the DSL signal from the client transceiver unit 121 and the POTS signal of the telephone terminal 130; the integrated signal is transmitted through the multi-channel UTP 140, by the central office The split/conformer 151 in the DSLAM 150 receives; the split/conformer 151 separates the received signals, and transmits the POTS signals therein to a Public Switched Telephone Network (PSTN) 160, which will be the DSL signal. The transceiver unit 152 sends the received signal to the network management system (NMS) 170. In the downstream direction of the signal, the signals are transmitted in the reverse order of the above.

在第二代甚高速数字用户线（VDSL2) 中采用遗留（Legacy)线路进行传输， DSLAM端无法自行获得 Legacy线路与 Legacy线路之间的串扰信息，需要通过单独的串扰测试方法获取。目前业界提出了矢量化 DSL ( Vectored - DSL ) 技术，主要利用在 DSLAM端进行联合的收发的可能性，使用上下行信号联合处理的方法来抵消 FEXT 的干扰，从而消除每一路信号中 FEXT 干扰，即 Vectored-DSL是远端自串扰消除的 VDSL2。由于 VDSL2技术早于 Vectored-DSL 技术，且已得到广泛应用，因此将 VDSL2升级到 Vectored-DSL时必须考虑兼容现网已有的且不支持 Vectored-DSL 的 VDSL2 Legacy 用户前端装置 ( Customer Premises Equipment , CPE )，如制解调器 modem。然而, VDSL2 Legacy CPE不支持在同步符号（Sync Symbol )发送与接收导频序列以及反馈误差，从而导致矢量化控制实体 ( Vectoring Control Entity, VCE )难以估计出 Vector线路和 Legacy线路之间串扰系数。所以 Vectored-DSL技术应用受限于和 Legacy VDSL2长期共存的问题。 In the second generation of very high speed digital subscriber line (VDSL2), the Legacy line is used for transmission. The DSLAM terminal cannot obtain the crosstalk information between the Legacy line and the Legacy line by itself, and needs to be obtained by a separate crosstalk test method. At present, the industry proposes vectorized DSL (Vectored-DSL) technology, which mainly utilizes the possibility of joint transmission and reception at the DSLAM end, and uses the uplink and downlink signal joint processing method to cancel the FEXT interference, thereby eliminating FEXT interference in each signal. which is Vectored-DSL is VDSL2 for remote self-crosstalk cancellation. Since VDSL2 technology is earlier than Vectored-DSL technology and has been widely used, it is necessary to consider VDSL2 Legacy user front-end devices (Customer Premises Equipment) that are compatible with existing networks and do not support Vectored-DSL when upgrading VDSL2 to Vectored-DSL. CPE), such as a modem modem. However, the VDSL2 Legacy CPE does not support the transmission and reception of pilot sequences and feedback errors in the Sync Symbol, which makes it difficult for the Vectoring Control Entity (VCE) to estimate the crosstalk coefficient between the Vector line and the legacy line. Therefore, the application of Vectored-DSL technology is limited by the long-term coexistence with Legacy VDSL2.

动态频谱管理 DSM主要应用于纯 Legacy VDSL2, 以及 Legacy VDSL2和 Vectored-DSL混合的场景。如果没有 Legacy线路与 Legacy线路之间，以及 Legacy线路与 Vector线路之间的详细串扰信息，使得 DSM不能有效的工作。 Dynamic Spectrum Management DSM is primarily used in pure Legacy VDSL2, as well as in legacy VDSL2 and Vectored-DSL hybrid scenarios. If there is no detailed crosstalk between the Legacy line and the Legacy line, and between the Legacy line and the Vector line, the DSM will not work effectively.

本发明提供的多线路串扰测试方法和装置，可以应用于 DSM***获取各线路之间的串扰信息，用以优化各线路发送功率谱，对线路的串扰进行预补偿或者选择串扰较小的线路进行通信，尽量小的串扰影响，提升线路稳定性、提高线路的可达速率和降低功率消耗。本发明还可以应用于对线路通信状态的检测，通过对线路串扰状况判断出有故障的线路等，保证线路有效工作。 The multi-line crosstalk test method and device provided by the invention can be applied to the DSM system to obtain crosstalk information between lines, to optimize the transmission power spectrum of each line, to pre-compensate the crosstalk of the line or to select a line with less crosstalk. Communication, minimize crosstalk effects, improve line stability, increase line reachability, and reduce power consumption. The invention can also be applied to the detection of the line communication state, and the faulty line is judged by the line crosstalk condition to ensure the effective operation of the line.

频语管理中心（ Spectrum Management Center, SMC )是 DSM***中一个重要的功能模块， SMC通过 DSLAM经由多路传输线路与用户的网络终端设如 modem)相接。 SMC可以集成在 DSLAM中，也可以作为单独的服务器控制 DSLAM。 The Spectrum Management Center (SMC) is an important functional module in the DSM system. The SMC connects to the user's network terminal such as a modem via a DSLAM via a multiplex line. The SMC can be integrated into the DSLAM or it can be used as a separate server to control the DSLAM.

实施例一 Embodiment 1

图 2是本实施例提供的多线路串扰测试方法流程图，如图 2所示，本发明的方法包括： 2 is a flowchart of a multi-line crosstalk test method provided in this embodiment. As shown in FIG. 2, the method of the present invention includes:

步骤 S101、 SMC为多条被测线路中的每条被测线路配置对应的子载波测试序列。 Step S101: The SMC configures a corresponding subcarrier test sequence for each of the plurality of tested lines.

SMC 预先配置多个子载波测试序列，并存储于管理信息库（Management The SMC pre-configures multiple subcarrier test sequences and stores them in the management information base (Management).

Information Base, MIB ) 中。两条线路 LI和 L2之间的远端串扰包含两个方向：下行方向和上行方向，下行方向 L2对 L1的串扰和上行方向 L1对 L2的串扰系数具有对偶关系，即在频率相同的情况下，两个方向的串扰水平系数是相等的。因而， SMC在构造子载波测试序列可以分别构造两个方向的子载波测试序列，分别计算得到两个方向的串扰水平系数，或者，也可以仅构造一个方向（上行方向或下行方向）的子载波测试序列，从而计算得到一个方向的串扰水平系数，再通过对称关系，计算得到另一个方向的串扰水平系数。在本实施例中，以构造下行方向的子载波测试序列为例进行说明，但并不以此限制本发明。 Information Base, MIB). The far-end crosstalk between the two lines LI and L2 includes two directions: the downlink direction and the uplink direction, the downlink direction L2 crosstalk to L1 and the uplink direction L1 to L2 crosstalk coefficient have a dual relationship, that is, in the case of the same frequency The crosstalk horizontal coefficients in both directions are equal. Therefore, the SMC can construct subcarrier test sequences in two directions in the constructed subcarrier test sequence, respectively calculate the crosstalk horizontal coefficients in two directions, or can construct only one direction (uplink or downlink) subcarriers. The sequence is tested to calculate the horizontal crosstalk level coefficient in one direction, and then the crosstalk horizontal coefficient in the other direction is calculated by the symmetric relationship. In this embodiment, the subcarrier test sequence in the downlink direction is described as an example, but the present invention is not limited thereto.

SMC为多条被测线路中的每条被测线路配置对应的子载波测试序列，具体包括： The SMC configures a corresponding subcarrier test sequence for each of the plurality of tested lines, including:

步骤 S 101 1、 SMC获取所述多条被测线路的线路数量 K。 Step S101: The SMC acquires the number K of lines of the plurality of tested lines.

步骤 S1012、 SMC针对 K条所述被测线路设置所述屏蔽频点，生成 K个不同的子载波测试序列。 Step S1012: The SMC sets the mask frequency point for the K lines to be tested, and generates K different subcarrier test sequences.

所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号，即在该屏蔽频点上不传输任何信号。 The subcarrier test sequence includes at least one masking frequency point, and the subcarrier signal corresponding to the frequency is shielded at the masking frequency point, that is, no signal is transmitted at the masking frequency point.

优选地， SMC按照阶梯方式构造子载波测试序列，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 K个不同的子载波测试序列。 Preferably, the SMC constructs a subcarrier test sequence in a stepwise manner, the number of the masked frequency points is sequentially increased, and the shielding frequency points set by the next measured line include all the shielding frequency points set by the previous measured line, forming K different subcarrier test sequences.

例如，所述 K个不同的子载波测试序列设置的屏蔽频点以 K*K阶梯方式分布，具体为：式 1

For example, the shielding frequency points set by the K different subcarrier test sequences are distributed in a K*K ladder manner, specifically:

每一行表示一个子载波测试序列中包含的屏蔽频点，其中，第 1行表示第 1个子载波测试序列包含 1个屏蔽频点 ^第 Κ行表示第 Κ个子载波测试序列包括 Κ个屏蔽频点 _ηι〜η_κ。可选地，在步骤 SI Oi l所述获取所述被测线路的线路数量 K时，还包括：获取各所述被测线路的线路参数。 Each row represents a masked frequency point included in a subcarrier test sequence, wherein the first row indicates that the first subcarrier test sequence includes one masked frequency point. The second row indicates that the second subcarrier test sequence includes one masking frequency point. _{_ηι ~η κ.} Optionally, when acquiring the number of lines K of the tested line in step SIO1, the method further includes: acquiring line parameters of each of the tested lines.

所述线路参数包括以下所列中的一种或任意组合：子载波宽度、线路长度、电气长度、平均线路衰减、最大可达速率。 The line parameters include one or any combination of the following: subcarrier width, line length, electrical length, average line attenuation, maximum reachable rate.

则步骤 S1012还可以先根据获取的所述线路参数的大小，对所述被测线路进行排序；再根据所述排序的结果，依次对 Κ条所述被测线路设置屏蔽频点，形成 Κ 个不同的子载波测试序列，可以通过模板参数中，包括 Tone Blackout , RFI notch, PSDMASK参数，选取任意一种或者几种模板参数组合产生 K个模板。在本发明中以 Tone Blackout为模板参数设置屏蔽频点为例进行说明，但并不以此限制本发明，可以采用 RFI notch、 PSDMASK为模板参数来设置屏蔽频点。 In step S1012, the measured line may be first sorted according to the obtained size of the line parameter; and according to the sorted result, the masked frequency points are sequentially set to the tested line to form a plurality of lines. For different subcarrier test sequences, K templates can be generated by using any one or several template parameter combinations in the template parameters, including Tone Blackout, RFI notch, and PSDMASK parameters. In the present invention, the Tone Blackout is used as a template parameter to set the mask frequency as an example. However, the present invention is not limited thereto, and the mask frequency can be set by using RFI notch and PSDMASK as template parameters.

图 3是本实施提供的下行方向的子载波测试序列的示意图，如图 3所示，被测线路包括 K条被测线路，即线路 L 1 ~线路 LK , 各条被测线路可以具有不同的线路参数，例如，线路 L1的子载波宽度可以为 8M, 线路 L2的子载波宽度不同的或长度等。线路 L1上设置屏蔽频点 nl , 线路 L2上设置了屏蔽频点 nl和屏蔽频点 n2 , 线路 L3上设置了屏蔽频点 nl、屏蔽频点 n2和屏蔽频点 n3 , 线路 LK上设置了屏蔽频点 nl ~ nK, 即按照式 1所示的 Κ*Κ阶梯方式设置屏蔽频点。其中， US表示上行方向， DS表示下行方向，屏蔽频点 nl ~ nK均设置在下行方向。可以看出，屏蔽频点 nl在所有被测线路中均有设置，也就是说，在这个该屏蔽频点 nl所有被测线路均不传输子载波信号，各被测线路之间无相互的串扰，此时测量得到的接收端的噪声信号为线路的背景噪声（即白噪声）。需要说明的是，为了增强测试准确性， κ*κ阶梯矩阵中的每一列可以多次重复，即阶梯矩阵中包括的列数可以大于 Κ, 也就是说，也可以在所有被测线路上设置多个相同的屏蔽频点（例如在所有被测线路上设置另一屏蔽频点 ηΓ , 屏蔽频点 ηΓ与屏蔽频点 nl的位置不同，即对应的频率不同）用以计算得到白噪声，通过求取平均值提高白噪声的计算精度。对于其他屏蔽频点，类似地，也可以甚至多个，因而，线路 LK上设置的屏蔽频点的个数可以大于 K。 3 is a schematic diagram of a subcarrier test sequence in the downlink direction provided by the present embodiment. As shown in FIG. 3, the line to be tested includes K lines to be tested, that is, line L 1 to line LK, and each line to be tested may have different lines. The line parameters, for example, the subcarrier width of the line L1 may be 8M, the subcarrier width of the line L2 is different or length, and the like. The shielding frequency point nl is set on the line L1, the shielding frequency point nl and the shielding frequency point n2 are set on the line L2, the shielding frequency point nl, the shielding frequency point n2 and the shielding frequency point n3 are set on the line L3, and the shielding is set on the line LK. The frequency point nl ~ nK, that is, the mask frequency is set according to the Κ*Κ step mode shown in Equation 1. The US indicates the uplink direction, the DS indicates the downlink direction, and the mask frequencies n1 to nK are both set in the downlink direction. It can be seen that the shielding frequency point n1 is set in all the tested lines, that is to say, all the tested lines do not transmit subcarrier signals at this shielding frequency point nl, and there is no mutual crosstalk between the tested lines. At this time, the measured noise signal at the receiving end is the background noise of the line (ie, white noise). It should be noted that, in order to enhance the test accuracy, each column in the κ*κ step matrix can be repeated multiple times, that is, the number of columns included in the ladder matrix can be greater than Κ, that is, it can also be set on all lines to be tested. Multiple identical shielding frequency points (for example, another shielding frequency point η 设置 is set on all the tested lines, and the shielding frequency point η Γ is different from the shielding frequency point nl, that is, the corresponding frequency is different) for calculating white noise, Finding the average value improves the calculation accuracy of white noise. For other shields The frequency point, similarly, may even be plural, and thus, the number of shielding frequency points set on the line LK may be greater than K.

通常，被测线路的长度越长，线路衰减越大；子载波频率越高，线路衰减也越大，因而，长度越长的被测线路用的子载波宽度越小。 SMC可以按照子载波的屏蔽频点的个数对所有线路性能影响最小的规则将模板映射到 Κ条被测线路对应线路的端口模板，具体可以采用以下所列中的任意一种： Generally, the longer the length of the line under test, the greater the line attenuation; the higher the subcarrier frequency, the greater the line attenuation. Therefore, the longer the length, the smaller the subcarrier width for the line under test. The SMC can map the template to the port template of the corresponding line of the tested line according to the rule that the number of masked frequency points of the subcarriers has the least impact on all line performances. Specifically, any one of the following can be used:

( a )按照被测线路的长度、电气长度或者平均衰减大小分配上述子载波屏蔽序列。 (a) The above subcarrier masking sequence is allocated according to the length, electrical length or average attenuation of the line under test.

( b )按照被测线路的子载波宽度或者实际可用子载波个数的多少分配上述子载波屏蔽序列。也就是说，被测线路的子载波宽度越窄，屏蔽频点数量越少越好。 (b) The above subcarrier masking sequence is allocated according to the subcarrier width of the tested line or the number of actually available subcarriers. In other words, the narrower the subcarrier width of the line under test, the smaller the number of masked frequencies, the better.

( c )按照被测线路最大可能速率的大小分配上述子载波屏蔽序列。 (c) Allocating the above subcarrier masking sequence according to the maximum possible rate of the measured line.

这样，可以尽量减少屏蔽的子载波数量对所传输的线路整体性能的影响。步骤 S 1 02、 SMC控制所述每条被测线路的发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述每条被测线路的接收端。 In this way, the effect of the number of shielded subcarriers on the overall performance of the transmitted line can be minimized. Step S102: The SMC controls the sending end of each tested line to load the subcarrier test sequence corresponding to each tested line, and sends the corresponding test line to each corresponding one of the tested lines. The receiving end of the line to be tested.

发送端既可以是 DSLAM, 也可以是用户的网络终端设备（如 CPE ) 。 The sender can be either a DSLAM or a user's network terminal device (such as CPE).

下行方向是指数据传输方向由 DSLAM发送给 CPE的方向，上行方向是指数据传输方向由 CPE发送给 DSLAM的方向。 The downlink direction refers to the direction in which the data transmission direction is sent by the DSLAM to the CPE, and the uplink direction refers to the direction in which the data transmission direction is sent by the CPE to the DSLAM.

如果发送端是 DSLAM时， DSLAM直接将 SMC配置的子载波测试序列加载到被测线路并发送给接收端。 If the sender is a DSLAM, the DSLAM directly loads the subcarrier test sequence configured by the SMC to the line under test and sends it to the receiver.

如果发送端是用户的网络接入设备时， DSLAM先将 SMC配置的子载波测试序列通过下行方向的数据传输给各个用户的 CPE , CPE在接收到对应测试线路的子载波测试序列后，加载并向 DSLAM发送对应的子载波测试序列。 If the sender is the user's network access device, the DSLAM first transmits the subcarrier test sequence configured by the SMC to the CPE of each user through the downlink data. After receiving the subcarrier test sequence corresponding to the test line, the CPE loads and A corresponding subcarrier test sequence is sent to the DSLAM.

步骤 S 1 03、 SMC采集所述每条被测线路上的运行参数信息。 Step S1 03: The SMC collects operation parameter information on each tested line.

运行参数信息包括线路衰减 H_i ( )、发送功率谱密度信噪比 SNR, (n_k )和接收端的噪声 RxNoisei ( )等。 Operation parameter information including line attenuation H _i ( ), transmission power spectral density signal to noise ratio SNR, (n _k ) and noise RxNoisei ( ) at the receiving end.

其中，表示所述子载波测试序列的第 k个屏蔽频点， H_i ( )表示在第 k个屏蔽频点时第 i条被测线路的线路衰减（即传输函数），表示第 j 条被测线路在第 k个屏蔽频点的发送功率谱密度， R_xNoi_Sei(n_k)表示第 i条被测线路在第 k个屏蔽频点的接收端的噪声， ^WR,^)表示第 i条被测线路在第 k 个屏蔽频点的信噪比， l i K ， Kk<K , l j k_l。在接收端上可以采集到对应不同 i、 j和 k的取值的运行参数。 Wherein, representing the kth masking frequency of the subcarrier test sequence, H _i ( ) represents the line attenuation (ie, the transfer function) of the ith tested line at the kth masking frequency point, indicating that the jth The transmission power spectral density of the measured line at the kth shielding frequency point, R _x Noi _Sei (n _k ) represents the noise of the i-th measured line at the receiving end of the kth shielding frequency point, ^WR, ^) indicates the i-th The signal-to-noise ratio of the measured line at the kth shielding frequency point, li K , Kk<K , lj k_l. The operating parameters corresponding to the values of different i, j and k can be collected at the receiving end.

步骤 S104、 SMC根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。具体包括： Step S104: The SMC calculates a crosstalk level coefficient between the two tested lines according to the operation parameter information that is received by the plurality of tested lines. Specifically include:

步骤 S1041、 SMC计算每条被测线路的无串扰时的背景噪声。 Step S1041: The SMC calculates the background noise when there is no crosstalk for each line under test.

如果步骤 S103采集到的运行参数信息包括线路衰减 H„ J、发送功率谱密度和接收端的噪声 RxNoise n_k) , 则本步骤 S1041根据以下公式： If the operation parameter information collected in step S103 includes the line attenuation H„J, the transmission power spectral density, and the noise RxNoise n _k at the receiving end, then the step S1041 is based on the following formula:

σ ¾ !· (n_k ) ¾ !· {η_χ ) = RxNoise_i (η^ 式 2 计算出每条被测线路的无串扰时的背景噪声 , 其中， )表示第 i条被测线路在第 1个屏蔽频点的背景噪声，表示第 i条被测线路在第 k个屏蔽频点的背景噪声。 σ 3⁄4 !· (n _k ) 3⁄4 !· {η _χ ) = RxNoise _i (η^ Equation 2 calculates the background noise without crosstalk for each line under test, where , ) indicates that the i-th measured line is at The background noise of one shielding frequency point indicates the background noise of the i-th measured line at the kth shielding frequency point.

如果步骤 S103采集到的运行参数信息包括线路衰减 H„ J、发送功率谱密度 ( )、信噪比和接收端的噪声 RxNoise人 n_k、 , 则本步骤 S1(M1根据以下公式： If the operation parameter information collected in step S103 includes the line attenuation H„J, the transmission power spectral density ( ), the signal-to-noise ratio, and the noise RxNoise person n _k at the receiving end, then this step S1 (M1 is according to the following formula:

σ_; σ» ₌ ) 式 3 计算出每条被测线路的无串扰时的背景噪声。 σ _; σ» ₌ ) Equation 3 calculates the background noise without crosstalk for each line under test.

当然，每条被测线路的无串扰时的背景噪声也可以通过经验值设定，例如取值为一常数，对于准确度要求不高的场合，也可以不考虑背景噪声，即取值为 0。步骤 S1042、 SMC根据同一个屏蔽频点各被测线路接收端的噪声与线路衰减、发送功率谱密度和无串扰时的背景噪声之间的关系所构成的方程组 Of course, the background noise of each line under test without crosstalk can also be set by the empirical value, for example, the value is a constant. For the case where the accuracy is not high, the background noise can be ignored, that is, the value is 0. . Step S1042: The equation group formed by the relationship between the noise of the receiving end of each measured line and the line attenuation, the transmission power spectral density, and the background noise without crosstalk according to the same shielding frequency point.

(Af-n_kf , 计算得到串扰水平系数〜

j ° (Af-n _k f , calculated crosstalk level coefficient ~

j °

根据方程组 According to the equations

₂ k-l ₂ kl

(Af-n_k - |H, α.. · Sj (n_k ) + σ, = RxNoise, (n_k) 式 4 计算得到串扰水平系数其中， 2 k K ， k< i <K, 表示第 j条被测线路对第 i条被测线路的串扰水平系数， Δ/表示子载波间隔，最小为 4.3125ΚΗζ, 表示所述子载波测试序列的第 k个屏蔽频点。 (Af-n _k - |H, α.. · Sj (n _k ) + σ, = RxNoise, (n _k ) Equation 4 calculates the crosstalk level coefficient, where 2 k K , k< i <K, denotes the jth The crosstalk level coefficient of the measured line to the ith measured line, Δ/ indicates the subcarrier spacing, and the minimum is 4.3125 ΚΗζ, indicating the kth masking frequency point of the subcarrier test sequence.

如果取子载波间隔 Δ/为 4.3125ΚΗζ, 屏蔽频点 nl的序号是 1, 则于 4.3125ΚΗζ。相应地，设置的屏蔽频点也可以根据此关系计算对应的序号。如果子载波间隔 Δ/取 4.3125ΚΗζ,则频率为 8.625ΚΗζ的屏蔽频点的序号是 2。对于 3幌的子载波宽度来说，理论上可以有的屏蔽频点的数量是 30ΜΗζ/4. 3125 KHz个。 If the subcarrier spacing Δ/ is 4.3125ΚΗζ, the masking frequency point nl has a sequence number of 1, then 4.3125ΚΗζ. Correspondingly, the set masking frequency point can also calculate the corresponding serial number according to the relationship. If the subcarrier spacing Δ/ is 4.3125ΚΗζ, the masking frequency of the frequency of 8.625ΚΗζ is 2. For the subcarrier width of 3 ,, the number of shielding frequency points that can theoretically be 30 ΜΗζ / 4. 3125 KHz.

当 k=2时，即对于屏蔽频点 n2, 式 4具体为方程组： When k=2, that is, for the masking frequency point n2, Equation 4 is specifically a system of equations:

(Δ/ · w₂)² -|H₂₂(w₂)| ·α₂₁■S_l{n₂) + a₂ = RxNoise₂ (n₂ ) < … 式 5(Δ/ · w ₂ ) ² -|H ₂₂ (w ₂ )| ·α ₂₁ ■S _l {n ₂ ) + a ₂ = RxNoise ₂ (n ₂ ) < ...

(Δ/ · W₂)²

+ σ_κ = RxNoise_K(n₂) 利用式 5可以计算得出串扰水平系数 (Δ/ · W ₂ ) ²

+ σ _κ = RxNoise _K (n ₂ ) The crosstalk horizontal coefficient can be calculated using Equation 5.

当 k=3时，即对于屏蔽频点 n3, 式 4具体为方程组： When k=3, that is, for the shielding frequency point n3, Equation 4 is specifically a system of equations:

(Δ/ ·η₃)² · |/₃3 ("3 )| · [ 3 i'S₁(n₃) + a₃₂-S₂ (¾ )] + σ₃ = RxNoise₃ (n₃ ) (Δ/·η ₃ ) ² · |/ ₃ 3 ("3 )| · [ 3 i'S ₁ (n ₃ ) + a ₃₂ -S ₂ (3⁄4 )] + σ ₃ = RxNoise ₃ (n ₃ )

< … 式 6 < ... Equation 6

(Δ/ -n₃ + σ_κ = RxNoise_K (η₃ )(Δ/ -n ₃ + σ _κ = RxNoise _K (η ₃ )

将式 5计算得到的串扰水平系数 ₁〜_¾1代入式 6中，可以计算得出串扰水平系数 a_{3 2}〜 a_{K 2}。 The crosstalk level coefficient ₁ to _3⁄41 calculated by Equation 5 is substituted into Equation 6, and crosstalk can be calculated. The horizontal coefficient a _{3 2} ~ a _{K 2} .

依次类推，当 k=K时，对于屏蔽频点 nK , 式 4具体为方程： And so on, when k = K, for the shielding frequency point nK, Equation 4 is specifically the equation:

(△/ · ¾ )² · \^Hi, i (^ηκ · [%,ι · 5Ί (η_κ ) + a_{K 2} - S₂(n_K ) + - - + α_{κ κ}_₁ · S_K_₁ (η_κ )] + = RxNoise_K (η_κ ) 式 7 利用之前计算得到的串扰水平系数代入到式 7 中，可以计算得出串扰水平系数 a_m , 从而得到各个串扰水平系数 α_ίΛ〜α_ω。 (△/ · 3⁄4 ) ² · \ ^H i, i ( ^η κ · [%, ι · 5Ί (η _κ ) + a _{K 2} - S ₂ (n _K ) + - - + α _{κ κ} _ ₁ · S _K _ ₁ (η _κ )] + = RxNoise _K (η _κ ) Equation 7 Using the previously calculated crosstalk level coefficient into Equation 7, the crosstalk level coefficient a _m can be calculated to obtain the respective crosstalk level coefficients α _Λ 〜 α _ω .

步骤 S1043、 SMC根据对称性公式^ =_{Ωί ί} , 计算得到第 i条被测线路对第 j条被测线路的串扰水平系数。 Step S1043: The SMC calculates the crosstalk horizontal coefficient of the i-th measured line to the j-th tested line according to the symmetry formula ^= _{Ω ί ί} .

由于被测线路之间的串扰基本上只与线路的空间位置有关，因而串扰水平系数与串扰水平系数具有对称性。 Since the crosstalk between the lines under test is basically only related to the spatial position of the line, the crosstalk level coefficient and the crosstalk level coefficient are symmetrical.

这样，利用多个屏蔽频点的被测线路的信息联立一个方程组，从而计算出被测线路两两之间的串扰水平系数，得到下行串扰信道矩阵。 In this way, the information of the circuit under test using a plurality of masked frequencies is combined to form a system of equations, thereby calculating the crosstalk level coefficient between the two lines of the measured line, and obtaining a downlink crosstalk channel matrix.

可选地，本发明提供的多线路串扰测试方法，还可以包括：根据上行串扰与下行串扰的对称性，计算另一方向的串扰信道矩阵。也就是说，在得到某特定线路对另一线路的某一方向（上行 /下行）的串扰后，即可以得到另一线路对该特定线路的另一方向的串扰。 Optionally, the multi-line crosstalk test method provided by the present invention may further include: calculating a crosstalk channel matrix in another direction according to the symmetry of the uplink crosstalk and the downlink crosstalk. That is to say, after obtaining crosstalk in a certain direction (uplink/downlink) of another specific line to another line, crosstalk of the other line to the other direction of the specific line can be obtained.

对于 SMC设置两个方向的子载波测试序列时，可以通过如步骤 S 104中的方法计算得到，因而，本步骤不是必须的步骤。 When the SMC sets the subcarrier test sequence in two directions, it can be calculated by the method in step S104, and thus, this step is not an essential step.

本实施例提供的方法在每条被测线路上只需要传输一次子载波测试序歹l , 利用各序列的不相关性，即可计算得到被测线路两两之间的串扰水平系数，快速准确地估计出串扰水平系数。本实施例提供的方法适用于纯 Legacy VDSL2、纯 Vec tored-DSL和 Legacy VDSL2与 Vec tored-DSL混合的应用场景，得到各类型线路之间的串扰信息。 The method provided in this embodiment only needs to transmit the subcarrier test sequence 一次l on each line to be tested, and the crosstalk level coefficient between the two lines to be tested can be calculated by using the irrelevance of each sequence, which is fast and accurate. The crosstalk level coefficient is estimated. The method provided in this embodiment is applicable to a scenario where a pure Legacy VDSL2, a pure Vec tored-DSL, and a Legacy VDSL2 and a Vec tored-DSL are mixed, and crosstalk information between various types of lines is obtained.

实施例二 Embodiment 2

本实施例以 Legacy VDSL2和 Vec tored-DSL混合的场景为例进行说明， Vec tored -DSL ***利用估计下行预编码矩阵与上行氏消矩阵，可以得到 Vec tor线路之间的串扰信息，以及 Legacy线路与 Vec tor线路之间的串扰信息。利用 Vec tored -DSL ***得到的串扰信息，加速混合场景中其他未知的串扰信息的计算，得到 Legacy线路对 Legacy线路以及 Vec tor线路对 Legacy 线路的串扰信息，即用已知的串扰水平系数和采集的运行参数结合进行计算，可以缩短计算时间。 This embodiment uses a scenario in which Legacy VDSL2 and Vec tored-DSL are mixed as an example. The Vec tored-DSL system uses the estimated downlink precoding matrix and the uplink cancellation matrix to obtain crosstalk information between the Vec tor lines and crosstalk information between the Legacy line and the Vec tor line. Using the crosstalk information obtained by the Vec tored-DSL system, the calculation of other unknown crosstalk information in the hybrid scene is accelerated, and the crosstalk information of the Legacy line to the Legacy line and the Vec tor line to the Legacy line is obtained, that is, the known crosstalk level coefficient and the acquisition are used. The combination of the operating parameters can be calculated to shorten the calculation time.

图 4是本实施例提供的多线路串扰测试方法流程图，如图 4所示，所述方法包括： 4 is a flowchart of a multi-line crosstalk test method provided in this embodiment. As shown in FIG. 4, the method includes:

步骤 S201、 SMC为多条被测线路中的每条被测线路配置对应的子载波测试序列。 Step S201: The SMC configures a corresponding subcarrier test sequence for each of the plurality of tested lines.

可选地， SMC也可以只针对 Legacy线路配置对应的子载波测试序列，这样可以避免损失 Vec tor线路的性能。 Optionally, the SMC can also configure the corresponding subcarrier test sequence only for the Legacy line, so as to avoid loss of performance of the Vec tor line.

步骤 S202、控制所述每条被测线路的发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述每条被测线路的接收端。 Step S202: The sender of each tested line is loaded with the subcarrier test sequence corresponding to each tested line, and is sent to each corresponding one of the tested lines via the tested line. The receiving end of the line.

步骤 S201、 S202与实施例一中步骤 S101、 S102对应相同，于此不再赘述。 The steps S201 and S202 are the same as the steps S101 and S102 in the first embodiment, and are not described here.

步骤 S203、 SMC采集所述每条被测线路的运行参数信息。 Step S203: The SMC collects operation parameter information of each tested line.

具体地，可以针对被测线路的不同类型分别进行采集，采集 Legacy线路的运行参数和 Vec tor线路的运行参数。 Specifically, the different types of the tested lines may be separately collected, and the operating parameters of the Legacy line and the operating parameters of the Vec tor line are collected.

对于 Vec tor线路，接收端除了可以采集到 Vec tor线路的运行参数，还可以采集到 Vec tor线路对 Vec tor线路之间的串扰信道矩阵，即各 Vec tor线路两两之间的串扰水平系数。 For the Vec tor line, in addition to the operating parameters of the Vec tor line, the receiving end can also collect the crosstalk channel matrix between the Vec tor line and the Vec tor line, that is, the crosstalk level coefficient between the two Vec tor lines.

对于 Legacy线路，接收端采集的 Legacy线路的运行参数包括 Legacy线路对 Vec tor线路的串扰信息，以及 Legacy线路对 Legacy线路的串扰信息等。 For Legacy lines, the operating parameters of the Legacy line collected by the receiver include the crosstalk information of the Legacy line to the Vec tor line, and the crosstalk information of the Legacy line to the Legacy line.

步骤 S204、 SMC获取已知的串扰水平系数。已知的串扰水平系数是指采用直接测量的方法或者本发明以外的其他方法计算得到的串扰水平系数，例如，利用 Vectored_DSL***的 VCE根据 Vector 线路的运行参数获取 Vector线路对 Vector线路的串扰水平系数。 Step S204: The SMC acquires a known crosstalk level coefficient. The known crosstalk level coefficient refers to the crosstalk level coefficient calculated by the direct measurement method or other methods other than the present invention. For example, the VCE of the Vectored_DSL system is used to obtain the crosstalk horizontal coefficient of the Vector line to the Vector line according to the operation parameters of the Vector line. .

具体地， Vectored-DSL***利用 VCE通过同步符号 Sync Symbol进行同步，发送端在所有线路的 Sync Symbol上联合调制导频序列（ P i lot Sequence ), 接收侧接收并向 VCE反馈误差，从而在 VCE中估计出下行预编码矩阵与上行抵消矩阵，继而应用上述的矢量化技术抵消 FEXT。这样利用 VCE即可估计出 Vector线路对 Vector线路的串扰信道矩阵。 Specifically, the Vectored-DSL system synchronizes with the VCE through the synchronization symbol Sync Symbol, and the transmitting end jointly modulates the pilot sequence on the Sync Symbol of all lines, and the receiving side receives and feeds back the error to the VCE, thereby being at the VCE. The downlink precoding matrix and the uplink cancellation matrix are estimated, and then the vectorization technique described above is applied to cancel the FEXT. In this way, VCE can be used to estimate the crosstalk channel matrix of the Vector line to the Vector line.

步骤 S205、 SMC根据所述多条被测线路对应接收到的所述运行参数信息和所述已知的串扰水平系数，计算所述多条被测线路两两之间的串扰水平系数。 Step S205: The SMC calculates a crosstalk level coefficient between the two tested lines according to the operating parameter information and the known crosstalk level coefficient corresponding to the plurality of measured lines.

利用采集 Vector线路的运行参数，并利用 VCE估计出的 Vector线路对 Vector线路的串扰信道矩阵，根据式 4的方程组先计算 Legacy线路对 Vector 线路的串扰水平系数，具体计算过程与实施例一中的步骤 S104相类似，利用已知的或者计算得到的部分串扰水平系数，计算剩余的其他串扰水平系数。 By using the operating parameters of the Vector line and using the VCE to estimate the crosstalk channel matrix of the Vector line to the Vector line, the crosstalk level coefficient of the Legacy line to the Vector line is first calculated according to the equation of Equation 4, and the specific calculation process and the first embodiment Step S104 is similar, and the remaining crosstalk level coefficients are calculated using the known or calculated partial crosstalk level coefficients.

同理，再利用对称性公式，计算得到整个被测线路两两之间的串扰水平系数，形成串扰通信矩阵。 In the same way, the symmetry formula is used to calculate the crosstalk level coefficient between the two lines under test to form a crosstalk communication matrix.

本发明提供的方法通过在子载波测试序列中设置若干屏蔽频点，形成不相关测试序列，计算被测线路之间的串扰水平系数，子载波屏蔽（ tone blackout )后对用户的影响较小，可以保持业务不中断，而且利用越长线路使用尽量少的 tone blackout 的分配原则，减小屏蔽的子载波数量对所传输的线路整体性能的影响。 The method provided by the invention sets a plurality of shielding frequency points in the subcarrier test sequence to form an uncorrelated test sequence, and calculates a crosstalk horizontal coefficient between the tested lines, and the subcarrier shielding (tone blackout) has less influence on the user. It is possible to keep the service uninterrupted, and to reduce the influence of the number of shielded subcarriers on the overall performance of the transmitted line by using the distribution principle of the tone blackout as little as possible.

以上是对本发明所提供的多线路串扰测试方法进行的详细描述，下面对本发明提供的多线路串扰测试装置进行详细描述。 The above is a detailed description of the multi-line crosstalk test method provided by the present invention. The multi-line crosstalk test apparatus provided by the present invention will be described in detail below.

实施例三 Embodiment 3

图 5是本实施例提供的多线路串扰测试装置示意图，如图 5所示，本发明的多线路串扰测试装置包括：配置单元 10、发送单元 20、采集单元 30和计算单元 40。 5 is a schematic diagram of a multi-line crosstalk test apparatus provided in this embodiment, as shown in FIG. The multi-line crosstalk test apparatus of the present invention includes: a configuration unit 10, a transmitting unit 20, an acquisition unit 30, and a calculation unit 40.

配置单元 1 0用于为多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号。 The configuration unit 10 is configured to configure a corresponding subcarrier test sequence for each of the plurality of tested lines, where the subcarrier test sequence includes at least one masking frequency point, and the shielding frequency is shielded and transmitted. A subcarrier signal corresponding to the frequency.

配置单元 10预先配置多个子载波测试序列，并存储于管理信息库中。两条线路 L1和 L2之间的远端串扰包含两个方向：下行方向和上行方向，下行方向 L2对 L1的串扰和上行方向 L1对 L2的串扰系数具有对偶关系，即在频率相同的情况下，两个方向的串扰水平系数是相等的。因而，配置单元 10在构造子载波测试序列可以分别构造两个方向的子载波测试序列，后续分别计算得到两个方向的串扰水平系数，或者，也可以仅构造一个方向（上行方向或下行方向）的子载波测试序列，后续计算得到一个方向的串扰水平系数，再通过对称关系，计算得到另一个方向的串扰水平系数。在本实施例中，配置单元 10以构造下行方向的子载波测试序列为例进行说明，但并不以此限制本发明。 The configuration unit 10 pre-configures a plurality of subcarrier test sequences and stores them in the management information base. The far-end crosstalk between the two lines L1 and L2 includes two directions: the downlink direction and the uplink direction, the crosstalk of the L2 to the L1 in the downlink direction and the crosstalk coefficient of the L1 and L2 in the uplink direction have a dual relationship, that is, in the case of the same frequency The crosstalk horizontal coefficients in both directions are equal. Therefore, the configuration unit 10 can construct the subcarrier test sequences in two directions respectively in constructing the subcarrier test sequence, and subsequently calculate the crosstalk horizontal coefficients in the two directions respectively, or can also construct only one direction (uplink direction or downlink direction). The subcarrier test sequence is obtained by subsequent calculation of the crosstalk horizontal coefficient in one direction, and then the crosstalk horizontal coefficient in the other direction is calculated through the symmetric relationship. In this embodiment, the configuration unit 10 is described by taking a subcarrier test sequence configured in the downlink direction as an example, but the present invention is not limited thereto.

配置单元 10具体包括：获取子单元和设置子单元。 The configuration unit 10 specifically includes: an obtaining subunit and a setting subunit.

获取子单元用于获取所述多条被测线路的线路数量 κ。 The obtaining subunit is configured to acquire the number of lines κ of the plurality of tested lines.

设置子单元用于根据获取子单元获取的线路数量 Κ ,针对 Κ条所述被测线路设置所述屏蔽频点，生成 κ个不同的子载波测试序列。 The setting subunit is configured to set the shielding frequency point for the measured line according to the acquisition subunit according to the number of lines acquired by the obtaining subunit, and generate κ different subcarrier testing sequences.

所述子载波测试序列中至少包括一个屏蔽（b l ackout )频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号，即在该屏蔽频点上不传输任何信号。子载波测试序列中至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于所述线路数量 K。 The subcarrier test sequence includes at least one masking frequency, and the subcarrier signal corresponding to the frequency is shielded at the masking frequency point, that is, no signal is transmitted at the masking frequency point. The number of the masking frequencies set in at least one of the subcarrier test sequences in the subcarrier test sequence is greater than the number of lines K.

优选地，设置子单元按照阶梯方式构造子载波测试序列，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 Κ个不同的子载波测试序列。例如，所述 Κ个不同的子载波测试序列设置的屏蔽频点以 κ*κ阶梯方式分布，具体如式 1所示。 Preferably, the setting sub-unit constructs a sub-carrier test sequence in a stepwise manner, the number of the shielding frequency points is sequentially increased, and the shielding frequency points set by the latter one of the tested lines include all shielding frequency points set by the previous measured line. , forming a different subcarrier test sequence. For example, the one The masking frequency points set by different subcarrier test sequences are distributed in a κ*κ step manner, as shown in Equation 1.

可选地，所述获取子单元还用于获取所述多条被测线路的线路参数，所述线路参数包括以下所列中的一种或任意组合： Optionally, the acquiring subunit is further configured to acquire line parameters of the multiple tested lines, where the line parameters include one or any combination of the following:

子载波宽度、线路长度、平均线路衰减、电气长度、最大可达速率。则配置单元 10还包括：排序子单元，用于根据所述获取子单元获取的所述线路参数的大小，对 κ条所述被测线路进行排序。 Subcarrier width, line length, average line attenuation, electrical length, maximum reachable rate. The configuration unit 10 further includes: a sorting subunit, configured to sort the κ lines to be tested according to the size of the line parameter acquired by the obtaining subunit.

所述设置子单元根据所述排序子单元排序的结果，依次对 Κ条所述被测线路设置屏蔽频点，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 Κ 个不同的子载波测试序列，可以通过模板参数中，包括 Tone Blackout , RFI notch, PSDMASK参数，选取任意一种或者几种模板参数组合产生 K个模板。 The setting subunit sets a masking frequency point to the tested line in sequence according to the result of the sorting subunit sorting, the number of the shielding frequency points is sequentially increased, and the shielding of the next measured line is set. The frequency point includes all the masking frequency points set by the previous line to be tested, forming a different subcarrier test sequence. You can select any one or several template parameters through the template parameters, including Tone Blackout, RFI notch, and PSDMASK parameters. Combine to generate K templates.

图 3是本实施提供的下行方向的子载波测试序列的示意图，如图 3所示，被测线路包括 K条被测线路，即线路 L 1 ~线路 LK , 各条被测线路可以具有不同的线路参数，例如，线路 L1的子载波宽度可以为 8M, 线路 L2的子载波宽度不同的或长度等。线路 L1上设置屏蔽频点 nl , 线路 L2上设置了屏蔽频点 nl和屏蔽频点 n2 , 线路 L3上设置了屏蔽频点 nl、屏蔽频点 n2和屏蔽频点 n3 , 线路 LK上设置了屏蔽频点 nl ~ nK, 即按照式 1所示的 Κ*Κ阶梯方式设置屏蔽频点。其中， US表示上行方向， DS表示下行方向，屏蔽频点 nl ~ nK均设置在下行方向。可以看出，屏蔽频点 nl在所有被测线路中均有设置，也就是说，在这个该屏蔽频点 nl所有被测线路均不传输子载波信号，各被测线路之间无相互的串扰，此时测量得到的接收端的噪声信号为线路的背景噪声（即白噪声）。需要说明的是，为了增强测试准确性， K*K阶梯矩阵中的每一列可以多次重复，即阶梯矩阵中包括的列数可以大于 Κ, 也就是说，也可以在所有被测线路上设置多个相同的屏蔽频点（例如在所有被测线路上设置另一屏蔽频点 ηΓ , 屏蔽频点 ηΓ与屏蔽频点 nl的位置不同，即对应的频率不同）用以计算得到白噪声，通过求取平均值提高白噪声的计算精度。对于其他屏蔽频点，类似地，也可以甚至多个，因而，线路 LK上设置的屏蔽频点的个数可以大于 K。 3 is a schematic diagram of a subcarrier test sequence in the downlink direction provided by the present embodiment. As shown in FIG. 3, the line to be tested includes K lines to be tested, that is, line L 1 to line LK, and each line to be tested may have different lines. The line parameters, for example, the subcarrier width of the line L1 may be 8M, the subcarrier width of the line L2 is different or length, and the like. The shielding frequency point nl is set on the line L1, the shielding frequency point nl and the shielding frequency point n2 are set on the line L2, the shielding frequency point nl, the shielding frequency point n2 and the shielding frequency point n3 are set on the line L3, and the shielding is set on the line LK. The frequency point nl ~ nK, that is, the mask frequency is set according to the Κ*Κ step mode shown in Equation 1. The US indicates the uplink direction, the DS indicates the downlink direction, and the mask frequencies n1 to nK are both set in the downlink direction. It can be seen that the shielding frequency point n1 is set in all the tested lines, that is to say, all the tested lines do not transmit subcarrier signals at this shielding frequency point nl, and there is no mutual crosstalk between the tested lines. At this time, the measured noise signal at the receiving end is the background noise of the line (ie, white noise). It should be noted that, in order to enhance the test accuracy, each column in the K*K step matrix can be repeated multiple times, that is, the number of columns included in the ladder matrix can be greater than Κ, that is, it can also be set on all lines to be tested. Multiple identical shielding frequency points (for example, another shielding frequency point η 设置 is set on all the tested lines, and the shielding frequency point η Γ is different from the shielding frequency point nl, that is, the corresponding frequency is different) White noise is calculated and the calculation accuracy of white noise is improved by obtaining the average value. For other shielding frequency points, similarly, there may be even more than one. Therefore, the number of shielding frequency points set on the line LK may be greater than K.

发送单元 20用于在所述每条被测线路中加载所述配置单元配置的所述子载波测试序列，并经由所述每条被测线路发送。 The sending unit 20 is configured to load the subcarrier test sequence of the configuration unit configuration in each of the tested lines, and send the signal through each of the tested lines.

采集单元 30用于采集所述每条被测线路在所述发送单元加载并发送所述子载波测试序列后的运行参数信息。 The collecting unit 30 is configured to collect operating parameter information of each of the tested lines after the transmitting unit loads and transmits the subcarrier testing sequence.

运行参数信息包括线路衰减 H_i ( )、发送功率谱密度信噪比 SNR, (n_k )和接收端的噪声 RxNoisei ( )等。 The operational parameter information includes line attenuation H _i ( ), transmission power spectral density signal-to-noise ratio SNR, (n _k ), and noise RxNoisei ( ) at the receiving end.

计算单元 40用于根据所述采集单元采集的所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 The calculating unit 40 is configured to calculate a crosstalk level coefficient between the two tested lines according to the operation parameter information received by the plurality of measured lines collected by the collecting unit.

计算单元 40包括：第一计算子单元、第二计算子单元和第三计算子单元。第一计算子单元用于计算所述每条测试线路的无串扰时的背景噪声。如果采集单元 30采集到的运行参数信息包括线路衰减 H„ J、发送功率谱密度和接收端的噪声则第一计算子单元根据式 2计算出每条测试线路的无串扰时的背景噪声。 The calculation unit 40 includes a first calculation subunit, a second calculation subunit, and a third calculation subunit. The first calculation subunit is configured to calculate background noise when the test line is free of crosstalk. If the operation parameter information collected by the acquisition unit 30 includes the line attenuation H„J, the transmission power spectral density, and the noise at the receiving end, the first calculation subunit calculates the background noise of each test line without crosstalk according to Equation 2.

如果采集单元 30采集到的运行参数信息包括包括线路衰减 H„ J、发送功率谱密度信噪比 ^WR,^)和接收端的噪声则第一计算子单元根据式 3计算出每条测试线路的无串扰时的背景噪声。第二计算子单元用于根据同一个屏蔽频点各被测线路上接收端的噪声与线路衰减、发送功率谱密度和无串扰时的背景噪声之间的关系所构成的方程组，计算得到串扰水平系数〜 ^。 If the operating parameter information collected by the collecting unit 30 includes the line attenuation H„J, the transmission power spectral density signal-to-noise ratio (WR), and the noise at the receiving end, the first calculating subunit calculates each test line according to Equation 3. Background noise without crosstalk. The second calculating sub-unit is configured to calculate a crosstalk level according to a relationship between noise at the receiving end of each measured line and the relationship between line attenuation, transmission power spectral density, and background noise without crosstalk at the same shielding frequency point. Coefficient ~ ^.

第二计算子单元根据式 4的方程组计算计算得到串扰水平系数〜 , 针对 k的不同取值，式 4可以展开成如式 5〜式 7所示的方程组，逐列地计算出各个串扰水平系数。 The second calculation subunit calculates the crosstalk horizontal coefficient 〜 according to the equations of Equation 4, and for the different values of k, Equation 4 can be expanded into a system of equations as shown in Equations 5 to 7, and each crosstalk is calculated column by column. Horizontal factor.

第三计算子单元用于根据对称性公式计算得到第 i 条被测线路对第 j条被测线路的串扰水平系数。 The third calculation subunit is configured to calculate the crosstalk horizontal coefficient of the ith measured line to the jth measured line according to the symmetry formula.

另外，第三计算子单元还用于根据上行串扰与下行串扰的对称性，计算另一方向的串扰信道矩阵。也就是说，第三计算子单元在得到某特定线路对另一线路的某一方向（上行 /下行）的串扰后，即可以得到另一线路对该特定线路的另一方向的串扰。 In addition, the third calculating subunit is further configured to calculate a crosstalk channel matrix in another direction according to the symmetry of the uplink crosstalk and the downlink crosstalk. That is to say, after the third computing sub-unit obtains crosstalk in a certain direction (uplink/downlink) of another specific line to another line, crosstalk of the other line to the other direction of the specific line can be obtained.

可选地，本发明的多线路串扰测试装置还可以包括：检测单元 50 , 用于获取已知的串扰水平系数。 Optionally, the multi-line crosstalk test apparatus of the present invention may further include: a detecting unit 50, configured to acquire a known crosstalk level coefficient.

已知的串扰水平系数是指采用直接测量的方法或者本发明以外的其他方法计算得到的串扰水平系数，例如，利用 Vec tor ed_DSL***的 VCE根据 Vector 线路的运行参数获取 Vector线路对 Vector线路的串扰水平系数。 The known crosstalk level coefficient refers to the crosstalk level coefficient calculated by the direct measurement method or other methods other than the present invention. For example, the VCE of the Vec tor ed_DSL system is used to obtain the crosstalk of the Vector line to the Vector line according to the operation parameters of the Vector line. Horizontal factor.

具体地， Vectored-DSL***利用 VCE通过同步符号 Sync Symbol进行同步，发送端在所有线路的 Sync Symbol上联合调制导频序列（ P i lot Sequence ), 接收侧接收并向 VCE反馈误差，从而在 VCE中估计出下行预编码矩阵 P与上行氏消矩阵 W , 继而应用上述的矢量化技术 ·|氏消 FEXT。这样利用 VCE即可估计出 Vector线路对 Vector线路的串扰信道矩阵。第二计算子单元则利用采集 Vector线路的运行参数，并利用 VCE估计出的 Vector 线路对 Vector 线路的串扰信道矩阵，根据式 4 的方程组先计算 Legacy线路对 Vector线路的串扰水平系数，具体计算过程与实施例一中的步骤 S104相类似，利用已知的或者计算得到的部分串扰水平系数，计算剩余的其他串扰水平系数。 Specifically, the Vectored-DSL system synchronizes with the VCE through the synchronization symbol Sync Symbol, and the transmitting end jointly modulates the pilot sequence on the Sync Symbol of all lines, and the receiving side receives and feeds back the error to the VCE, thereby being at the VCE. The downlink precoding matrix P and the uplink cancellation matrix W are estimated, and then the above vectorization technique is applied. In this way, the VCE can be used to estimate the crosstalk channel matrix of the Vector line to the Vector line. The second calculation sub-unit uses the operating parameters of the Vector line to be acquired, and uses the VCE to estimate the crosstalk channel matrix of the Vector line to the Vector line. According to the equations of Equation 4, the crosstalk horizontal coefficient of the Legacy line to the Vector line is first calculated, and the specific calculation is performed. The process is similar to step S104 in the first embodiment, and the remaining crosstalk level coefficients are calculated using the known or calculated partial crosstalk level coefficients.

同理，第三计算子单元再利用对称性公式，计算得到整个被测线路两两之间的串扰水平系数，形成串扰通信矩阵。 Similarly, the third computing sub-unit uses the symmetry formula to calculate the crosstalk horizontal coefficient between the two measured lines to form a crosstalk communication matrix.

实施例四 Embodiment 4

图 6为本发明实施例的多线路串扰测试装置的结构组成示意图。本发明实施例的多线路串扰测试装置可包括： FIG. 6 is a schematic structural diagram of a multi-line crosstalk test apparatus according to an embodiment of the present invention. The multi-line crosstalk test apparatus of the embodiment of the present invention may include:

处理器 601、存储器 602、 ***总线 603和通信接口 604。处理器 601、存储器 602和通信接口 604之间通过***总线 603连接并完成相互间的通信。 Processor 601, memory 602, system bus 603, and communication interface 604. The processor 601, the memory 602, and the communication interface 604 are connected by the system bus 603 and complete communication with each other.

处理器 601可能为单核或多核中央处理单元（Central Processing Unit, CPU ) , 或者为特定集成电路 ( Application Specific Integrated Circuit, ASIC) , 或者为被配置成实施本发明实施例的一个或多个集成电路。 The processor 601 may be a single core or multi-core central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated systems configured to implement the embodiments of the present invention. Circuit.

存储器 602可以为高速 RAM存储器，也可以为非易失性存储器 The memory 602 can be a high speed RAM memory or a nonvolatile memory.

( non-volatile memory ) , 例如至少一个磁盘存储器。 (non-volatile memory), such as at least one disk storage.

存储器 602用于存放程序 605。具体的，程序 605中可以包括程序代码，所述程序代码包括计算机执行指令。 Memory 602 is used to store program 605. Specifically, the program 605 may include program code, where the program code includes a computer execution instruction.

当多线路串扰测试装置运行时，处理器 601运行程序 605, 以执行以下指令： When the multi-line crosstalk test device is running, the processor 601 runs the program 605 to execute the following instructions:

控制所述每条被测线路的发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述每条被测线路的接收端； Controlling, by the transmitting end of each of the tested lines, the subcarrier test sequence corresponding to each of the tested lines, and transmitting to each of the corresponding tested lines via the each tested line Receiving end

具体地，多线路串扰测试装置还根据所述指令执行上述图 2-4所示的通信方法，具体在此不再赘述。 Specifically, the multi-line crosstalk test apparatus further performs the communication method shown in FIG. 2-4 above according to the instruction, and details are not described herein.

实施例五 Embodiment 5

图 7为本实施例提供的多线路串扰测试***的示意图，如图 7所示，所述***包括：频谱管理中心单元 701、多条被测线路对应的发送端 702和接收端 703。 FIG. 7 is a schematic diagram of a multi-line crosstalk test system according to the embodiment. As shown in FIG. 7, the system includes: a spectrum management center unit 701, a plurality of transmitting ends 702 corresponding to the tested lines, and a receiving end 703.

频谱管理中心单元 701为所述多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号。 The spectrum management center unit 701 configures a corresponding subcarrier test sequence for each of the plurality of tested lines, where the subcarrier test sequence includes at least one masking frequency point, and the masking frequency point is shielded. A subcarrier signal of the corresponding frequency is transmitted.

每条被测线路的发送端 702加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的接收端 703。 The transmitting end 702 of each tested line loads the subcarrier test sequence corresponding to each tested line, and sends it to the corresponding receiving end 703 via each of the tested lines.

频谱管理中心单元 701采集所述每条被测线路的运行参数信息，并根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 The spectrum management center unit 701 collects the operation parameter information of each of the tested lines, and calculates the operation parameter information corresponding to the plurality of measured lines, and calculates between the two tested lines. Crosstalk level factor.

在配置子载波测试序列时，频谱管理中心单元 701先获取所述多条被测线路的线路数量 K , 而后针对 K条所述被测线路设置所述屏蔽频点，生成 K个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 κ。 When configuring the subcarrier test sequence, the spectrum management center unit 701 first acquires the number of lines K of the plurality of tested lines, and then sets the masked frequency points for the K lines to be tested, and generates K different subcarriers. a test sequence, wherein the number of the masking frequency points set in at least one of the subcarrier test sequences is greater than or equal to the number of lines κ.

具体地 ,频谱管理中心单元 701还可以执行上述图 2-4所示的通信方法，具体在此不再赘述。 Specifically, the spectrum management center unit 701 can also perform the foregoing communication method shown in FIG. 2-4, and details are not described herein.

本发明提供的多线路串扰测试方法、装置及***，利用 tone b lackout 设置不同样式的子载波的屏蔽频点，构造出不同的子载波测试序列，利用各序列的不相关性，计算得到被测线路两两之间的串扰水平系数，在每条被测线路上只需要传输一次子载波测试序列即可，可以同时进行多条线路的测试，能够快速准确地完成串扰测试，被测线路可以正常工作，对用户的业务影响小。 The multi-line crosstalk test method, device and system provided by the present invention use tone b lackout to set shielding frequency points of different types of subcarriers, and construct different subcarrier test sequences, The uncorrelation of the sequence calculates the crosstalk level coefficient between the two lines to be tested. Only one subcarrier test sequence needs to be transmitted once on each line to be tested. It can test multiple lines at the same time, which can be fast and accurate. The crosstalk test is completed, and the tested line can work normally, which has little impact on the user's business.

专业人员应该还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。 A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

结合本文中所公开的实施例描述的方法或算法的步骤可以用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器 ( RAM ) 、内存、只读存储器（ROM ) 、电可编程 R0M、电可擦除可编程 R0M、寄存器、硬盘、可移动磁盘、 CD-R0M、或技术领域内所公知的任意其它形式的存储介质中。 The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field Any other form of storage medium known.

以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above described embodiments of the present invention are further described in detail, and the embodiments of the present invention are intended to be illustrative only. The scope of the protection, any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

权利要求书 claims

1、一种多线路串扰测试方法，其特征在于，所述方法包括： 1. A multi-line crosstalk testing method, characterized in that the method includes:

为多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； A corresponding subcarrier test sequence is configured for each of the multiple tested lines. The subcarrier test sequence includes at least one shielding frequency point, and the subcarrier signal of the corresponding frequency is shielded and transmitted on the shielding frequency point. ;

控制所述每条被测线路的发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述每条被测线路的接收端； Control the sending end of each tested line to load the subcarrier test sequence corresponding to each tested line, and send it to the corresponding receiving end of each tested line via the each tested line. end;

采集所述每条被测线路的运行参数信息； Collect the operating parameter information of each tested line;

根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 According to the received operating parameter information corresponding to the plurality of tested lines, the crosstalk level coefficient between each of the plurality of tested lines is calculated.

2、根据权利要求 1所述的多线路串扰测试方法，其特征在于，所述为多条被测线路中的每条被测线路配置对应的子载波测试序列，包括： 2. The multi-line crosstalk testing method according to claim 1, characterized in that, configuring a corresponding subcarrier test sequence for each of the plurality of tested lines, including:

获取所述多条被测线路的线路数量 K; Obtain the line number K of the multiple tested lines;

针对 κ条所述被测线路设置所述屏蔽频点，生成 K个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 κ。 The shielding frequency points are set for κ of the tested lines, and K different subcarrier test sequences are generated, wherein the number of the shielding frequency points set in at least one of the subcarrier test sequences is greater than or equal to The number of lines is κ.

3、根据权利要求 2所述的多线路串扰测试方法，其特征在于，在所述获取所述多条被测线路的线路数量 Κ时，还包括： 3. The multi-line crosstalk testing method according to claim 2, wherein when obtaining the line number K of the multiple tested lines, it also includes:

获取所述多条被测线路的线路参数，所述线路参数包括以下所列中的一种或任意组合： Obtain the line parameters of the multiple measured lines, and the line parameters include one or any combination of the following:

子载波宽度、线路长度、平均线路衰减、电气长度、最大可达速率；所述针对 κ条所述被测线路设置所述屏蔽频点，生成 Κ个不同的子载波测试序列，包括： Subcarrier width, line length, average line attenuation, electrical length, and maximum achievable rate; the shielding frequency points are set for the K measured lines, and K different subcarrier test sequences are generated, including:

根据获取的所述线路参数的大小，对 Κ条所述被测线路进行排序；根据所述排序的结果，依次对 Κ条所述被测线路设置屏蔽频点，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 κ个不同的子载波测试序列。 According to the obtained size of the line parameters, the K measured lines are sorted; according to the result of the sorting, shielding frequency points are set for the K measured lines in sequence, and the screen The number of masked frequency points increases sequentially, and the masked frequency points set by the next tested line include all the masked frequency points set by the previous tested line, forming κ different subcarrier test sequences.

4、根据权利要求 2或 3所述的多线路串扰测试方法，其特征在于，所述 K个不同的子载波测试序列设置的屏蔽频点以 K*K阶梯方式分布，具体为： 4. The multi-line crosstalk test method according to claim 2 or 3, characterized in that the shielding frequency points set by the K different subcarrier test sequences are distributed in a K*K ladder manner, specifically:

每一行表示一个子载波测试序列中包含的屏蔽频点，其中，第 1 行表示第 1个子载波测试序列包含 1个屏蔽频点 ^第 Κ行表示第 Κ个子载波测试序列包括 Κ个屏蔽频点 _ηι〜 η_κ。 Each row represents a shielded frequency point included in a subcarrier test sequence, where the 1st row indicates that the 1st subcarrier test sequence includes 1 shielded frequency point, and the Kth row indicates that the Kth subcarrier test sequence includes K shielded frequency points. _ηι ~ η _κ .

5、根据权利要求 4所述的多线路串扰测试方法，其特征在于，所述运行参数信息包括线路衰减 H_i ( )、发送功率谱密度 ( )和接收端的噪声 5. The multi-line crosstalk testing method according to claim 4, characterized in that the operating parameter information includes line attenuation _Hi ( ), transmit power spectral density ( ) and noise at the receiving end

RxNoise^) , 其中，表示所述子载波测试序列的第 k个屏蔽频点， H_;, _Α)表示在第 k个屏蔽频点时第 i条被测线路的线路衰减（即传输函数），表示第 j条被测线路在第 k个屏蔽频点的发送功率谱密度，表示第 i 条被测线路在第 k 个屏蔽频点的接收端的噪声， l i K ， Kk<K , 1< j <k-l ； RxNoise^), where represents the k-th shielded frequency point of the subcarrier test sequence, H _; , _A ) represents the line attenuation (i.e. transfer function) of the i-th measured line at the k-th shielded frequency point, represents the transmit power spectral density of the j-th measured line at the k-th shielded frequency point, represents the noise at the receiving end of the i-th measured line at the k-th shielded frequency point, li K , Kk<K , 1< j <kl;

所述根据各所述被测线路对应接收到的所述运行参数信息，计算各所述被测线路两两之间的串扰水平系数，具体为：根据方程组(八/- )²-| ，，( )|²· + = RxNoise人 n_k、 , 计算得到串扰水平系数〜 , 其中， _Ω 表示第 j条被测线路对第 i条被测线路的串扰水平系数， Δ/表示子载波间隔， 2 k K ， k i K。 Calculate the crosstalk level coefficient between each of the measured lines according to the received operating parameter information corresponding to each of the measured lines, specifically: According to the equation set (8/-) ² -|, , ( )| ² · + = RxNoise n _k , , the crosstalk level coefficient ~ , is calculated, where _Ω represents the crosstalk level coefficient of the j-th measured line to the i-th measured line, Δ/ represents the sub-carrier spacing, 2kK,kiK.

6、根据权利要求 5所述的多线路串扰测试方法，其特征在于，在所述根据方程组 (Δ/· )²·| ·, , (n_k )f -∑ - S_} (n_k ) + σ_{ι =} RxNoise_l (n_k ) , 计算得到串扰水平系数 a _l〜 a_id之前，还包括： 6. The multi-line crosstalk testing method according to claim 5, characterized in that, according to the system of equations (Δ/· ) ² ·| ·, , (n _k )f -∑ - S _} (n _k ) + σ _{ι =} RxNoise _l (n _k ) , the crosstalk level system is calculated Before the number a _l ~ a _id , it also includes:

获得所述每条测试线路的无串扰时的背景噪声； Obtain the background noise without crosstalk for each test line;

根据公式

, calculate the background noise without crosstalk for each test line;

或者，根据公式 = 1) ' , 计算出所述每条测试线 Or, calculate each test line according to the formula = 1) ' ,

SNR_{ {η_λ ) 路的无串扰时的背景噪声； SNR _{ {η _λ ) The background noise when there is no crosstalk;

其中， ^ )表示第 i条被测线路在第 1个屏蔽频点的背景噪声，表示第 i条被测线路在第 k个屏蔽频点的背景噪声， ,^)表示所述运行参数信息中的第 i条被测线路在第 1个屏蔽频点的信噪比。 Among them, ^) represents the background noise of the i-th measured line at the first shielding frequency point, represents the background noise of the i-th measured line at the k-th shielding frequency point, ,^) represents the operating parameter information The signal-to-noise ratio of the i-th measured line at the first shielded frequency point.

7、根据权利要求 5所述的多线路串扰测试方法，其特征在于，在所述计算得到串扰水平系数 _aiJ之后，还包括： 7. The multi-line crosstalk testing method according to claim 5, characterized in that, after the crosstalk level coefficient _aiJ is obtained by the calculation, it further includes:

根据对称性公式^ =_Ω, ,. ,计算得到第 i条被测线路对第 j条被测线路的串扰水平系数 _Ω,,。 According to the symmetry formula ^ = _Ω , ,. , the crosstalk level coefficient _Ω , of the i-th measured line to the j-th measured line is calculated.

8、根据权利要求 5所述的多线路串扰测试方法，其特征在于，在所述根据方程组（Δ/· )²·| , , (n_k )|² ·∑ - S_J (n_k ) + σ, = RxNo^ (n_k ) , 计算得到串扰水平系数〜』之前，还包括： 8. The multi-line crosstalk testing method according to claim 5, characterized in that, according to the system of equations (Δ/·) ² ·| , , (n _k )| ² ·∑ - S _J (n _k ) + σ, = RxNo^ (n _k ) , before calculating the crosstalk level coefficient ~ 』, it also includes:

获取已知的串扰水平系数； Obtain the known crosstalk level coefficient;

所述根据方程组(4^ )².| , kf

, 计算得到串扰水平系数〜 , 具体为： According to the system of equations (4^ ) ² .| , kf

, the crosstalk level coefficient ~ is calculated, specifically:

将所述已知的串扰水平系数作为方程组 Treat the known crosstalk level coefficients as a system of equations

(A--_¾)²-|H.

+ a^RxNoise^n,)的输入，并根据所述多条被测线路对应接收到的所述运行参数信息，计算出剩余的所述多条被测线路两两之间的串扰水平系数。 (A-- _¾ ) ² -|H.

+ a^RxNoise^n,) input, and according to the received operating parameter information corresponding to the multiple measured lines, calculate the remaining multiple measured lines in pairs crosstalk level coefficient between.

9、一种多线路串扰测试装置，其特征在于，所述装置包括： 9. A multi-line crosstalk testing device, characterized in that the device includes:

配置单元，用于为多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； A configuration unit configured to configure a corresponding subcarrier test sequence for each of the multiple tested lines. The subcarrier test sequence includes at least one shielding frequency point, and the shielding transmission corresponding to the shielding frequency point is frequency subcarrier signal;

发送单元，用于在所述每条被测线路中加载所述配置单元配置的所述子载波测试序列，并经由所述每条被测线路发送； A sending unit, configured to load the subcarrier test sequence configured by the configuration unit into each line under test, and send it via each line under test;

采集单元，用于采集所述每条被测线路在所述发送单元加载并发送所述子载波测试序列后的运行参数信息； An acquisition unit, configured to collect the operating parameter information of each tested line after the sending unit loads and sends the subcarrier test sequence;

计算单元，用于根据所述采集单元采集的所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 The calculation unit is configured to calculate the crosstalk level coefficient between each of the plurality of measured lines according to the received operating parameter information corresponding to the plurality of measured lines collected by the acquisition unit.

10、根据权利要求 9 所述的多线路串扰测试装置，其特征在于，所述配置单元包括： 10. The multi-line crosstalk test device according to claim 9, characterized in that the configuration unit includes:

获取子单元，用于获取所述多条被测线路的线路数量 K; Obtaining subunit, used to obtain the line number K of the multiple tested lines;

设置子单元，用于根据获取子单元获取的线路数量 K,针对 K条所述被测线路设置所述屏蔽频点，生成 κ 个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 Set up a sub-unit, configured to set the shielding frequency point for the K measured lines according to the number K of lines obtained by the acquisition sub-unit, and generate κ different sub-carrier test sequences, wherein at least one of the sub-carriers is The number of shielded frequency points set in the test sequence is greater than or equal to the number of lines

11、根据权利要求 10所述的多线路串扰测试装置，其特征在于，所述获取子单元还用于获取所述多条被测线路的线路参数，所述线路参数包括以下所列中的一种或任意组合： 11. The multi-line crosstalk testing device according to claim 10, wherein the acquisition subunit is also used to acquire line parameters of the multiple tested lines, and the line parameters include one of the following: or any combination of:

子载波宽度、线路长度、平均线路衰减、电气长度、最大可达速率；所述配置单元还包括： Subcarrier width, line length, average line attenuation, electrical length, maximum achievable rate; the configuration unit also includes:

排序子单元，用于根据所述获取子单元获取的所述线路参数的大小，对 K 条所述被测线路进行排序； A sorting subunit, configured to sort the K measured lines according to the size of the line parameters obtained by the acquisition subunit;

所述设置子单元根据所述排序子单元排序的结果，依次对 K条所述被测线路设置屏蔽频点，所述屏蔽频点的数量依次增加，且后一条被测线路设置的所述屏蔽频点包括前一条被测线路设置的所有屏蔽频点，形成 κ个不同的子载波测试序列。 The setting subunit sequentially sorts the K items according to the sorting result of the sorting subunit. The line is set with shielding frequency points, and the number of the shielding frequency points increases in sequence, and the shielding frequency points set by the latter line under test include all the shielding frequency points set by the previous line under test, forming κ different subcarrier tests. sequence.

12、根据权利要求 10或 11所述的多线路串扰测试装置，其特征在于，所述设置子单元设置的 K个不同的子载波测试序列设置的屏蔽频点以 K*K阶梯方式分布，具体为：

12. The multi-line crosstalk test device according to claim 10 or 11, characterized in that the shielding frequency points set by the K different subcarrier test sequences set by the setting subunit are distributed in a K*K ladder manner, specifically for:

13、根据权利要求 12所述的多线路串扰测试装置，其特征在于，所述采集单元采集的运行参数信息包括线路衰减 H,, ,( )、发送功率谱密度和接收端的噪声 R_xN₀i_Sei(n_k) ,其中，表示所述子载波测试序列的第 k个屏蔽频点， H, 表示在第 k个屏蔽频点时第 i条被测线路的线路衰减（即传输函数），表示第 j条被测线路在第 k个屏蔽频点的发送功率谱密度， RxNoise人 n_k、示第 i条被测线路在第 k个屏蔽频点的接收端的噪声， l i K ， Kk<K , 1< j <k-l; 13. The multi-line crosstalk test device according to claim 12, characterized in that, the operating parameter information collected by the collection unit includes line attenuation H,, (), transmit power spectral density and noise at the receiving end R _x N ₀ i _Sei (n _k ), where, represents the k-th shielded frequency point of the subcarrier test sequence, H, represents the line attenuation (i.e., transfer function) of the i-th measured line at the k-th shielded frequency point, Indicates the transmit power spectral density of the j-th measured line at the k-th shielded frequency point, RxNoise and n _k , represents the noise at the receiving end of the i-th measured line at the k-th shielded frequency point, li K , Kk<K , 1< j <kl;

所述计算单元具体用于根据方程组 The calculation unit is specifically used to calculate according to the system of equations

(Af-n_kf - _ι (n_k )|² ·∑ α,.. - S_j (n_k ) + σ_{ι =} RxNoise_i (n_k ) , 计算得到串扰水平系数〜 α,, , 其中，表示第 j条被测线路对第 i条被测线路的串扰水平系数， Δ/表示子载波间隔， 2 k K ， k i K。 (Af-n _k f - _ι (n _k )| ² ·∑ α,.. - S _j (n _k ) + σ _{ι =} RxNoise _i (n _k ) , the crosstalk level coefficient ~ α,, , is calculated. represents the crosstalk level coefficient of the j-th measured line to the i-th measured line, Δ/ represents the subcarrier spacing, 2 k K , ki K .

14、根据权利要求 13所述的多线路串扰测试装置，其特征在于，所述计算单元还包括：第一计算子单元，用于获得所述每条测试线路的无串扰时的背景噪声；所述第一计算子单元根据公式 * σ» σ = RxNoise^ ) , 计算出所述每条测试线路的无串扰时的背景噪声；或者，所述第一计算子单元根据公式 ^ ^^ , 计算出所述每条测试线路的无串扰时的背景噪声； 14. The multi-line crosstalk testing device according to claim 13, wherein the computing unit further includes: The first calculation subunit is used to obtain the background noise of each test line without crosstalk; the first calculation subunit calculates the background noise of each test line according to the formula *σ»σ = RxNoise^) The background noise when there is no crosstalk; or, the first calculation subunit calculates the background noise when there is no crosstalk for each test line according to the formula ^ ^^;

15、根据权利要求 13所述的多线路串扰测试装置，其特征在于，所述计算单元还用于根据计算得到的串扰水平系数^和对称性公式 , 计算得到第 i条被测线路对第 j条被测线路的串扰水平系数 _;。 15. The multi-line crosstalk test device according to claim 13, characterized in that the calculation unit is also used to calculate the i-th measured line pair j-th line according to the calculated crosstalk level coefficient ^ and the symmetry formula The crosstalk level coefficient of the tested lines _; .

16、根据权利要求 13所述的多线路串扰测试装置，其特征在于，所述装置还包括： 16. The multi-line crosstalk testing device according to claim 13, characterized in that the device further includes:

检测单元，用于获取已知的串扰水平系数； A detection unit used to obtain known crosstalk level coefficients;

所述计算单元将所述检测单元获取的所述已知的串扰水平系数作为方程 iH (Af - n_k )² - , (n_k )|² · ¾ α,. . - S_j (n_k ) + σ_{ι =} RxNoise_i (n_k )的输入，并根据所述采集单元采集的所述运行参数信息，计算出剩余的所述多条被测线路两两之间的串扰水平系数。 The calculation unit uses the known crosstalk level coefficient obtained by the detection unit as the equation iH (Af - n _k ) ² - , (n _k )| ² ·¾ α,. . - S _j (n _k ) + σ _{ι =} the input of RxNoise _i (n _k ), and based on the operating parameter information collected by the acquisition unit, the crosstalk level coefficients between the remaining multiple measured lines are calculated.

17、一种多线路串扰测试***，其特征在于，所述***包括：频谱管理中心单元、多条被测线路对应的发送端和接收端； 17. A multi-line crosstalk test system, characterized in that the system includes: a spectrum management center unit, a transmitting end and a receiving end corresponding to multiple tested lines;

频谱管理中心单元为所述多条被测线路中的每条被测线路配置对应的子载波测试序列，所述子载波测试序列中至少包括一个屏蔽频点，在所述屏蔽频点上屏蔽传输对应频率的子载波信号； The spectrum management center unit configures a corresponding subcarrier test sequence for each of the multiple tested lines. The subcarrier test sequence includes at least one shielding frequency point, and transmission is shielded on the shielding frequency point. The subcarrier signal corresponding to the frequency;

所述每条被测线路的所述发送端加载所述每条被测线路对应的所述子载波测试序列，并经由所述每条被测线路发送给对应的所述接收端；频谱管理中心单元采集所述每条被测线路的运行参数信息，并根据所述多条被测线路对应接收到的所述运行参数信息，计算所述多条被测线路两两之间的串扰水平系数。 The sending end of each tested line loads the subcarrier corresponding to each tested line. The wave test sequence is sent to the corresponding receiving end via each of the tested lines; the spectrum management center unit collects the operating parameter information of each of the tested lines, and receives corresponding information according to the multiple tested lines. The operating parameter information is obtained, and the crosstalk level coefficients between the plurality of measured lines are calculated.

18、根据权利要求 17所述的多线路串扰测试***，其特征在于，所述频谱管理中心单元获取所述多条被测线路的线路数量 Κ ,并针对 Κ条所述被测线路设置所述屏蔽频点，生成 κ 个不同的子载波测试序列，其中，至少有一个所述子载波测试序列中设置的所述屏蔽频点的数量大于或等于所述线路数量 κ。 18. The multi-line crosstalk test system according to claim 17, characterized in that the spectrum management center unit obtains the line number K of the plurality of tested lines, and sets the line number K for the K tested lines. Mask frequency points to generate κ different subcarrier test sequences, wherein the number of shielded frequency points set in at least one of the subcarrier test sequences is greater than or equal to the number of lines κ.