WO2018098709A1

WO2018098709A1 - Channel estimation method and apparatus

Info

Publication number: WO2018098709A1
Application number: PCT/CN2016/108085
Authority: WO
Inventors: 涂建平; 何玉杰
Original assignee: 华为技术有限公司
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2018-06-07

Abstract

Disclosed in the present application are a channel estimation method and apparatus. The method comprises: lowering a power control parameter of a first frequency band on a second-type port, so as to decrease interference of the first frequency band on the second-type port to a crosstalk frequency band on a first-type port, a transmission frequency band of the first-type port comprising the crosstalk frequency band, and a transmission frequency band of the second-type port comprising the crosstalk frequency band and an out-band mirror frequency band of the crosstalk frequency band relative to the transmission frequency band of the first-type port; and initiating a first vectorization training, the first vectorization training being used for estimating a crosstalk frequency channel of a second frequency band on the second-type port relative to the crosstalk frequency band on the first-type port, the first frequency band being the crosstalk frequency band and the second frequency band being the out-band mirror frequency band, or the first frequency band being the out-band mirror frequency band and the second frequency band being the crosstalk frequency band. By means of the channel transmission method and apparatus in embodiments of the present application, the accuracy of crosstalk channel estimation can be improved.

Description

信道估计的方法及装置Channel estimation method and device

技术领域Technical field

本申请实施例涉及通信领域，尤其涉及通信领域中信道估计的方法及装置。The embodiments of the present application relate to the field of communications, and in particular, to a method and apparatus for channel estimation in the field of communications.

背景技术Background technique

xDSL是对所有数字用户线(Digital Subscriber Line，简称“DSL”)技术的统称，是一种在电话双绞线(Unshielded Twist Pair，简称“UTP”)上传输高速数据的技术，除了综合数字用户线路(Integrated Digital Subscriber Line，简称“IDSL”)和单对线高速数字用户线路(Single-pair High bit rate Digital Subscriber Line，简称“SHDSL”)等基带传输的DSL外，通带传输的xDSL利用频分复用技术来使得xDSL和传统电话业务(Plain Old Telephone Service，简称“POTS”)同时在一对双绞线上传输，其中xDSL占用高频段部分、POTS占用低于4KHz的基带部分，通过分离器对这两部分信号进行分离。通带传输的xDSL采用离散多音频调制(Discrete Multitone，简称“DMT”)。提供多路xDSL接入的***叫做DSL接入复用器(DSL Access Multiplexer，简称“DSLAM”)。但是，由于电磁感应原理，在接入DSLAM的多路信号之间会相互产生干扰，这种干扰称为串扰(Crosstalk)。xDSL is a general term for all Digital Subscriber Line (DSL) technologies. It is a technology for transmitting high-speed data over the Unshielded Twist Pair (UTP), in addition to integrated digital users. In addition to the DSL for baseband transmission such as the Integrated Digital Subscriber Line ("IDSL") and the Single-pair High Bit Rate Digital Subscriber Line ("SHDSL"), the xDSL utilization frequency of the passband transmission The sub-multiplexing technology is used to enable xDSL and the traditional telephone service (Plain Old Telephone Service, referred to as "POTS") to be transmitted simultaneously on a pair of twisted pairs. The xDSL occupies a high frequency band portion, and the POTS occupies a baseband portion of less than 4 kHz. The two parts of the signal are separated. The xDSL for passband transmission uses Discrete Multitone ("DMT"). A system that provides multiple xDSL access is called a DSL Access Multiplexer (DSLAM). However, due to the principle of electromagnetic induction, interference occurs between multiple signals connected to the DSLAM. This interference is called crosstalk.

串扰通常分为近端串扰(Near End Crosstalk，简称“NEXT”)和远端串扰(Far End Crosstalk，简称“FEXT”)，NEXT和FEXT的能量都会随着频段升高而增强。现有的xDSL技术，如非对称数字用户线路(Asymmetrical Digital Subscriber Line，简称“ADSL”)、甚高速数字用户线路(Very High Speed Digital Subscriber Line，简称“VDSL”)等，采用上下行信道频分复用(Frequency Division Duplexing，简称“FDD”)，即分不同的频段分别进行上下行工作，而G.fast技术如G.fast 106M profile，G.fast 212M profile，采用时分复用(Time Division Duplexing，简称“TDD”)，即分不同的时间窗分别给上下行工作，所以NEXT对***的性能的影响可以忽略不计，主要存在FEXT的影响，但由于G.fast使用的频段相对于VDSL更宽，FEXT愈发严重地影响G.fast的传输性能。目前ITU-T已经制定G.9701标准，实现G.fast基于矢量Vectoring技术在中心局(Central office，简称“CO”)端进行联合收发来抵消FEXT。 Crosstalk is usually divided into Near End Crosstalk (NEXT) and Far End Crosstalk (FEXT). The energy of NEXT and FEXT will increase with the increase of the frequency band. Existing xDSL technologies, such as Asymmetrical Digital Subscriber Line (ADSL), Very High Speed Digital Subscriber Line (VDSL), etc., use uplink and downlink channel frequency division Frequency Division Duplexing ("FDD"), which performs different uplink and downlink operations in different frequency bands, while G.fast technology such as G.fast 106M profile, G.fast 212M profile, uses Time Division Duplexing. , referred to as "TDD", which is divided into different time windows for the uplink and downlink work, so the impact of NEXT on the performance of the system is negligible, mainly the impact of FEXT, but because the frequency band used by G.fast is wider than VDSL FEXT is more and more seriously affecting the transmission performance of G.fast. At present, ITU-T has developed the G.9701 standard to implement G.fast vector-based Vectoring technology to jointly send and receive at the Central Office ("CO") side to offset FEXT.

在G.fast技术应用过程中，存在原有的G.fast 106M profile(106a)和新的G.fast 212M profile(212a)共存的环境，此时，光纤到分配点(Fiber To The Distribution Point，简称“FTTdp”)可升级成212M CO，但是用户前端装置(Customer Premises Equipment，简称“CPE”)侧仍存在106M和212M长期共存的问题。由于106a的CPE采用一倍采样的模数转换器(Analog to Digital Converter，简称“ADC”)，在下行时，212a端口高频段的带外串扰先被106a CPE侧的ADC模块前的模拟滤波器衰减，然后被ADC折叠到106a CPE的带内频段，对其信号产生串扰影响。由带外(Out Of Band，简称“OOB”)引起的这部分串扰影响，目前的Vector技术无法抵消，但是这部分串扰若不进行抵消，会导致106a端口OOB频段的信噪比(Signal-to-noise ratio，简称“SNR”)降低，影响端口的速率和稳定性。In the application process of G.fast technology, there is an environment where the original G.fast 106M profile (106a) and the new G.fast 212M profile (212a) coexist. At this time, the Fiber To The Distribution Point (Fiber To The Distribution Point, The abbreviation "FTTdp" can be upgraded to 212M CO, but there is still a problem of long-term coexistence of 106M and 212M on the side of the Customer Premises Equipment (CPE). Since the CPE of 106a uses a one-time analog to digital converter (Analog to Digital Converter), the out-of-band crosstalk of the 212a port high frequency band is first used by the analog filter in front of the ADC module on the 106a CPE side. Attenuation is then folded by the ADC into the in-band band of the 106a CPE, causing crosstalk effects on its signal. The effect of this part of crosstalk caused by Out Of Band ("OOB") can not be offset by the current Vector technology, but if this part of the crosstalk is not cancelled, it will lead to the signal-to-noise ratio of the OOB band of port 106a (Signal-to The -noise ratio ("SNR" for short) is reduced, affecting the rate and stability of the port.

目前采用高阶滤波器或关掉OOB影响的频点tone来规避处理，但会带来增加实现复杂度或降低端口性能的效果，因此，如何有效地估计串扰信道是一个亟待解决的问题。At present, high-order filters or off-tones of OOB influence are used to circumvent the processing, but the effect of increasing the implementation complexity or reducing the performance of the port is brought about. Therefore, how to effectively estimate the crosstalk channel is an urgent problem to be solved.

发明内容Summary of the invention

本申请实施例提供了一种信道估计的方法及装置，能够有效地估计串扰信道。The embodiments of the present application provide a method and apparatus for channel estimation, which can effectively estimate a crosstalk channel.

第一方面，提供了一种信道估计的方法，该方法包括：降低第二类端口上第一频段的功控参数，以降低该第二类端口上该第一频段对第一类端口上串扰频段的干扰，其中，该第一类端口的传输频带包括该串扰频段，该第二类端口的传输频带包括该串扰频段和该串扰频段相对于该第一类端口的传输频带的带外镜像频段；发起第一矢量化训练，该第一矢量化训练用于估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道，其中，该第一频段为该串扰频段，该第二频段为该带外镜像频段，或者，该第一频段为该带外镜像频段，该第二频段为该串扰频段。In a first aspect, a method for channel estimation is provided, the method comprising: reducing a power control parameter of a first frequency band on a second type of port to reduce crosstalk on the first type of port on the first type of port on the second type of port The interference of the frequency band, wherein the transmission frequency band of the first type of port includes the crosstalk frequency band, and the transmission frequency band of the second type of port includes the crosstalk frequency band and an outband image frequency band of the crosstalk frequency band relative to the transmission frequency band of the first type of port And initiating a first vectorization training, where the first vectorization training is used to estimate a crosstalk channel of the second frequency band of the second type of port on the crosstalk frequency band of the first type of port, where the first frequency band is the crosstalk frequency band The second frequency band is the out-of-band image frequency band, or the first frequency band is the out-of-band image frequency band, and the second frequency band is the crosstalk frequency band.

因此，根据本申请实施例的信道估计的方法，通过降低该第二类端口上该第一频段的功控参数，从而降低了该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，进而可以有效地估计出该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。Therefore, according to the method for channel estimation in the embodiment of the present application, the first frequency band on the second type port is reduced on the first type port by reducing the power control parameter of the first frequency band on the second type of port. The interference of the crosstalk frequency band can further effectively estimate the crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port.

在一些可能的实现方式中，该降低第二类端口的上第一频段的功控参数可以包括将该功控参数降低或关闭，例如将功控参数降低至第一阈值或者关闭时，以使该第二类端口上该第一频段对该第一类端口上该串扰频段不造成干扰，从而有效地估计出第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。In some possible implementation manners, the power control parameter of the upper first frequency band of the second type port is decreased. The method may include: reducing or turning off the power control parameter, for example, reducing the power control parameter to the first threshold or turning off, so that the first frequency band on the second type of port does not interfere with the crosstalk frequency band on the first type of port. , thereby effectively estimating the crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port.

结合第一方面，在第一方面的第一种可能的实现方式中，该方法还包括:恢复该第二类端口上该第一频段的功控参数至预定值；根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；发起第二矢量化训练，该第二矢量化训练用于估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes: recovering a power control parameter of the first frequency band on the second type of port to a predetermined value; according to the second type of port The second frequency band interferes with the crosstalk channel of the crosstalk frequency band on the first type of port, and cancels the interference of the second frequency band on the crosstalk frequency band of the first type of port; and initiates a second vectorization training, The second vectorization training is used to estimate a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port.

因此，根据本申请实施例的信道估计的方法，在有效地估计出第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道后，通过抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，从而可以有效地估计出第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Therefore, the method for channel estimation according to the embodiment of the present application, after effectively estimating the cross-talk channel of the cross-talk band on the second-type port on the second-type port, cancels the The second frequency band interferes with the crosstalk frequency band on the first type of port, so that the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port can be effectively estimated.

结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，该方法还包括：根据该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰。With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the method further includes: performing, according to the first frequency band, the first type of port on the first type of port The crosstalk channel of the crosstalk frequency band cancels the interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port.

结合第一方面，在第一方面的第三种可能的实现方式中，该方法还包括：恢复该第二类端口上该第一频段的功控参数至预定值；降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；发起第二矢量化训练，该第二矢量化训练用于估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。With reference to the first aspect, in a third possible implementation manner of the first aspect, the method further includes: recovering a power control parameter of the first frequency band on the second type of port to a predetermined value; and lowering the second type of port a power control parameter of the second frequency band to reduce interference of the second frequency band on the crosstalk frequency band of the first type of port on the second type of port; initiating a second vectorization training, where the second vectorization training is used for estimation The first frequency band of the second type of port is a crosstalk channel of the crosstalk frequency band on the first type of port.

在一些可能的实现方式中，该恢复该第二类端口上该第一频段的功控参数至预定值和该降低该第二类端口上该第二频段的功控参数可以同时进行，也可以分先后顺序进行，本申请实施例并不限于此。In some possible implementations, the restoring the power control parameter of the first frequency band on the second type of port to a predetermined value and the reducing the power control parameter of the second frequency band on the second type of port may be performed simultaneously, or The sequence is performed in sequence, and the embodiment of the present application is not limited thereto.

因此，根据本申请实施例的信道估计的方法，在有效地估计出第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道后，通过降低该第二类端口上该第二频段的功控参数，从而降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，进而可以有效地估计出第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。 Therefore, according to the method for channel estimation according to the embodiment of the present application, after effectively estimating the crosstalk channel of the crosstalk band on the second type of port on the second type of port, by lowering the port on the second type of port The power control parameter of the second frequency band, thereby reducing interference of the second frequency band on the crosstalk frequency band of the first type of port, and thereby effectively estimating the first frequency band of the second type of port A crosstalk channel of the crosstalk band on the first type of port.

结合第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，该方法还包括：根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，和该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；恢复该第二类端口上该第二频段的功控参数至预定值。In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes: applying, according to the second frequency band, the second frequency band to the first type of port a crosstalk channel of the crosstalk frequency band, and a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, canceling the first frequency band and the second type of port on the second type of port The second frequency band interferes with the crosstalk frequency band on the first type of port; and restores the power control parameter of the second frequency band on the second type of port to a predetermined value.

在一些可能的实现方式中，该抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰和该恢复该第二类端口上该第二频段的功控参数至预定值可以同时进行，也可以分先后顺序进行，本申请实施例并不限于此。In some possible implementations, the interference of the second frequency band on the second type of port and the second frequency band on the second type of port on the crosstalk frequency band of the first type of port and the recovery of the second type The power control parameter of the second frequency band on the port to the predetermined value may be performed at the same time, or may be performed in a sequence, and the embodiment of the present application is not limited thereto.

结合第一方面的第三种或第四种可能的实现方式，在第一方面的第五种可能的实现方式中，该降低该第二类端口上该第二频段的功控参数包括：将该功控参数关闭。In conjunction with the third or fourth possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the reducing the power control parameters of the second frequency band on the second type of port includes: The power control parameter is turned off.

在一些可能的实现方式中，该降低该第二类端口上该第二频段的功控参数还包括：将该功控参数降低至第一阈值。In some possible implementations, the reducing the power control parameter of the second frequency band on the second type of port further includes: reducing the power control parameter to a first threshold.

结合第一方面、第一方面的第一种至第五种可能的实现方式中的任一种可能的实现方式，在第一方面的第六种可能的实现方式中，该降低该第二类端口上该第一频段的功控参数包括：将该功控参数关闭。With reference to the first aspect, any one of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the second The power control parameter of the first frequency band on the port includes: turning off the power control parameter.

在一些可能的实现方式中，该降低该第二类端口上该第一频段的功控参数包括：将该功控参数降低至第一阈值。In some possible implementations, the reducing the power control parameter of the first frequency band on the second type of port includes: reducing the power control parameter to a first threshold.

结合第一方面的第一种至第六种可能的实现方式中的任一种可能的实现方式，在第一方面的第七种可能的实现方式中，该第二矢量化训练包括：在该第一类端口和所述第二类端口上发送导频训练信号，以使局端进行误差估计；接收该第一类端口上的误差样本信号；根据该第一类端口上的误差样本信号，估计该第二类端口上第一频段对该第一类端口上该串扰频段的串扰信道。In conjunction with any one of the possible implementations of the first to the sixth possible implementations of the first aspect, in a seventh possible implementation of the first aspect, the second vectorization training includes: Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation; receiving an error sample signal on the first type of port; and according to the error sample signal on the first type of port, A crosstalk channel of the first frequency band of the second type of port to the crosstalk frequency band of the first type of port is estimated.

结合第一方面、第一方面的第一种至第七种可能的实现方式中的任一种可能的实现方式，在第一方面的第八种可能的实现方式中，该第一矢量化训练包括：在该第一类端口和该第二类端口上发送导频训练信号，以使局端进行误差估计；接收该第一类端口上的误差样本信号；根据该第一类端口上的误差样本信号，估计该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道。With reference to the first aspect, any one of the first to the seventh possible implementation manners of the first aspect, in the eighth possible implementation manner of the first aspect, the first vectorization training The method includes: transmitting a pilot training signal on the first type port and the second type port, so that the central office performs error estimation; receiving an error sample signal on the first type port; according to the error on the first type port a sample signal, estimating the second frequency band on the second type of port to the crosstalk of the first type of port The crosstalk channel of the segment.

结合第一方面、第一方面的第一种至第八种可能的实现方式中的任一种可能的实现方式，在第一方面的第九种可能的实现方式中，该功控参数包括相对增益补偿因子ri或功率微调因子gi。With reference to the first aspect, any one of the first to the eighth possible implementation manners of the first aspect, in the ninth possible implementation manner of the first aspect, the power control parameter includes a relative Gain compensation factor ri or power trim factor gi.

结合第一方面的第九种可能的实现方式，在第一方面的第十种可能的实现方式中，在该第二类端口处于传输数据showtime阶段，且该第一类端口处于初始化状态时，该功控参数为ri。In conjunction with the ninth possible implementation of the first aspect, in a tenth possible implementation manner of the first aspect, when the second type of port is in a showtime phase of transmitting data, and the first type of port is in an initialized state, The power control parameter is ri.

结合第一方面的第十种可能的实现方式，在第一方面的第十一种可能的实现方式中，在该第一类端口处于传输数据showtime阶段，且该第二类端口处于初始化状态时，该功控参数为gi。In conjunction with the tenth possible implementation of the first aspect, in an eleventh possible implementation manner of the first aspect, when the first type of port is in a showtime phase of transmitting data, and the second type of port is in an initialized state The power control parameter is gi.

第二方面，提供了一种信道估计的装置，包括执行第一方面或第一方面的任意可能的实现方式中的方法的模块。In a second aspect, an apparatus for channel estimation is provided, comprising means for performing the method of the first aspect or any of the possible implementations of the first aspect.

第三方面，提供了一种信道估计的装置。该装置包括处理器和存储器。存储器用于存储指令，处理器用于执行该指令。该处理器执行该存储器存储的指令时，该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。In a third aspect, an apparatus for channel estimation is provided. The device includes a processor and a memory. The memory is used to store instructions that the processor uses to execute the instructions. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

第四方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。In a fourth aspect, a computer readable medium is provided for storing a computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.

附图说明DRAWINGS

图1是根据本申请实施例的技术方案应用的一种***的示意图。FIG. 1 is a schematic diagram of a system applied according to a technical solution of an embodiment of the present application.

图2是212a端口对106a端口的OOB串扰的示意图。2 is a schematic diagram of OOB crosstalk for port 212a to port 106a.

图3是根据本申请实施例的信道估计的方法的示意性流程图。FIG. 3 is a schematic flowchart of a method for channel estimation according to an embodiment of the present application.

图4是根据本申请实施例的信道估计的方法的另一示意性流程图。FIG. 4 is another schematic flowchart of a method for channel estimation according to an embodiment of the present application.

图5是根据本申请实施例的信道估计的方法的再一示意性流程图。FIG. 5 is still another schematic flowchart of a method for channel estimation according to an embodiment of the present application.

图6是根据本申请实施例的信道估计的方法的再一示意性流程图。FIG. 6 is still another schematic flowchart of a method for channel estimation according to an embodiment of the present application.

图7是根据本申请实施例的信道估计的方法的再一示意性流程图。FIG. 7 is still another schematic flowchart of a method for channel estimation according to an embodiment of the present application.

图8是根据本申请实施例的信道估计的装置的示意性框图。FIG. 8 is a schematic block diagram of an apparatus for channel estimation according to an embodiment of the present application.

图9是根据本申请实施例的信道估计的装置的另一示意性框图。9 is another schematic block diagram of an apparatus for channel estimation according to an embodiment of the present application.

图10是根据本申请实施例的信道估计的装置的再一示意性框图。 FIG. 10 is still another schematic block diagram of an apparatus for channel estimation according to an embodiment of the present application.

图11是根据本申请实施例的信道估计的装置的示意性结构图。11 is a schematic structural diagram of an apparatus for channel estimation according to an embodiment of the present application.

具体实施方式detailed description

下面将结合附图，对本申请实施例中的技术方案进行描述。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

应理解，本申请实施例的技术方案适用于各种xDSL技术，如ADSL，ADSL2，ADSL2+，VDSL，VDSL2，G.fast等，但本申请实施例并不限于此。It should be understood that the technical solutions of the embodiments of the present application are applicable to various xDSL technologies, such as ADSL, ADSL2, ADSL2+, VDSL, VDSL2, G.fast, etc., but the embodiments of the present application are not limited thereto.

图1给出了本申请实施例的技术方案应用的一种***的示意图。如图1所示，该***包括：网络侧、线路侧和用户侧。网络侧包括CO，线路侧可以为双绞线，用户侧包括CPE。图1以2个CPE为例，分别对应2个用户。CO采用基于矩阵的正交性原理的Vectoring技术进行串扰信道的估计，通过下发一定数目的相互正交的导频序列(Pilot Sequence，PS)，接收CPE侧反馈的误差估计，从而利用正交性分离计算出线路之间的串扰。FIG. 1 is a schematic diagram of a system for applying the technical solution of the embodiment of the present application. As shown in FIG. 1, the system includes: a network side, a line side, and a user side. The network side includes CO, the line side may be a twisted pair, and the user side includes a CPE. Figure 1 shows two CPEs as examples, corresponding to two users. The CO uses the Vectoring technique based on the principle of matrix orthogonality to estimate the crosstalk channel. By transmitting a certain number of mutually orthogonal pilot sequences (Pilot Sequence, PS), the error estimate of the CPE side feedback is received, thereby using orthogonality. Sexual separation calculates crosstalk between lines.

具体而言，Vectoring技术主要是在数字用户线路接入复用器(Digital Subscriber Line Access Multiplexer，简称“DSLAM”)端采用下行预编码和上行联合接收技术来实现FEXT抵消，通过DSLAM端和终端的交互，获取线路中的串扰矢量信息，然后进行复杂的矩阵计算获取“反相”串扰信号并将其叠加到数字用户专线信号中，在数字用户专线信号传输过程中，“反相”串扰信号和线路中的FEXT互相抵消，消除了FEXT对线路传输性能的影响。Specifically, the Vectoring technology mainly uses a downlink precoding and uplink joint receiving technology to implement FEXT cancellation on a Digital Subscriber Line Access Multiplexer (DSLAM) end, through a DSLAM terminal and a terminal. Interact, obtain crosstalk vector information in the line, and then perform complex matrix calculation to obtain the "inverted" crosstalk signal and superimpose it on the digital subscriber line signal. In the process of digital subscriber line signal transmission, "inverted" crosstalk signal and The FEXTs in the line cancel each other out, eliminating the effect of FEXT on line transmission performance.

本申请实施例的技术方案用于两种端口共存时，例如G.fast技术应用过程中212a和106a端口共存时的串扰信道估计。图2是212a端口对106a端口的OOB串扰的示意图。如图2所示，212a端口在传输数据的过程中，212a端口上106-212Mhz频段会对106a端口上96-106Mhz频段产生带外干扰，在这种情况下，需要针对该带外干扰，进行有效地的串扰信道估计。The technical solution of the embodiment of the present application is used for crosstalk channel estimation when two ports coexist, for example, when

ports

212a and 106a coexist in the G.fast technology application process. 2 is a schematic diagram of OOB crosstalk for port 212a to port 106a. As shown in Figure 2, in the process of transmitting data in port 212a, the 106-212 Mhz band on port 212a will generate out-of-band interference in the 96-106 Mhz band on port 106a. In this case, the out-of-band interference needs to be performed. Effective crosstalk channel estimation.

图3示出了根据本申请实施例的信道估计的方法100的示意性流程图，该方法100可以由CO执行。如图3所示，该方法100包括：FIG. 3 shows a schematic flow diagram of a method 100 of channel estimation in accordance with an embodiment of the present application, which may be performed by a CO. As shown in FIG. 3, the method 100 includes:

S110，降低第二类端口上第一频段的功控参数，以降低该第二类端口上该第一频段对第一类端口上串扰频段的干扰，其中，该第一类端口的传输频带包括该串扰频段，该第二类端口的传输频带包括该串扰频段和该串扰频段相对于该第一类端口的传输频带的带外镜像频段；S110. The power control parameter of the first frequency band of the second type of port is reduced to reduce the interference of the first frequency band on the crosstalk frequency band of the first type of port, where the transmission frequency band of the first type of port includes In the crosstalk frequency band, the transmission frequency band of the second type of port includes the crosstalk frequency band and an outband image frequency band of the crosstalk frequency band relative to the transmission frequency band of the first type of port;

S120，发起第一矢量化训练，该第一矢量化训练用于估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。 S120. Initiate a first vectorization training, where the first vectorization training is used to estimate a crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port.

在本申请实施例中，该第一频段为该串扰频段，该第二频段为该带外镜像频段，或者，该第一频段为该带外镜像频段，该第二频段为该串扰频段。In the embodiment of the present application, the first frequency band is the crosstalk frequency band, and the second frequency band is the outband image frequency band, or the first frequency band is the outband image frequency band, and the second frequency band is the crosstalk frequency band.

应理解，该串扰频段可以是第一类端口的全频段，也可以是第一类端口的部分频段，例如，在G.fast技术中，CPE侧存在106a端口和212a端口共存的情况，而CO侧只存在212a端口，该串扰频段可以是106a端口的0-106MHz频段，也可以是96-106MHz频段。当该串扰频段为0-106MHz频段时，该第一频段为212a端口上的0-106MHz频段，该串扰频段相对于该106a端口的传输频带的带外镜像频段为106-212MHz频段，即该第二频段为106-212MHz频段，或者该第一频段为106-212MHz频段，该串扰频段相对于该106a端口的传输频带的带外镜像频段为0-106MHz频段，即该第二频段为0-106MHz频段；当该串扰频段为96-106MHz频段时，该第一频段为212a端口上的96-106MHz频段，该串扰频段相对于该106a端口的传输频带的带外镜像频段为106-116MHz频段，即该第二频段为106-116MHz频段，或者，该第一频段为106-116MHz频段，该串扰频段相对于该106a端口的传输频带的带外镜像频段为96-106MHz频段，即该第二频段为96-106MHz频段，但本申请实施例并不限于此。It should be understood that the crosstalk frequency band may be a full frequency band of the first type of port, or may be a partial frequency band of the first type of port. For example, in the G.fast technology, there are cases where the 106a port and the 212a port coexist on the CPE side, and the CO There is only a port 212a on the side. The crosstalk band can be the 0-106MHz band of the 106a port or the 96-106MHz band. When the crosstalk frequency band is a 0-106 MHz frequency band, the first frequency band is a 0-106 MHz frequency band on the 212a port, and the out-of-band image frequency band of the crosstalk frequency band relative to the transmission frequency band of the 106a port is a 106-212 MHz frequency band, that is, the first frequency band The second frequency band is the 106-212 MHz frequency band, or the first frequency band is the 106-212 MHz frequency band, and the out-of-band image frequency band of the crosstalk frequency band relative to the transmission frequency band of the 106a port is 0-106 MHz frequency band, that is, the second frequency band is 0-106 MHz. The frequency band; when the crosstalk frequency band is the 96-106 MHz frequency band, the first frequency band is the 96-106 MHz frequency band on the 212a port, and the out-of-band image frequency band of the crosstalk frequency band relative to the transmission band of the 106a port is the 106-116 MHz frequency band, that is, The second frequency band is a frequency band of 106-116 MHz, or the first frequency band is a frequency band of 106-116 MHz, and the out-of-band image frequency band of the cross-talk frequency band relative to the transmission frequency band of the 106a port is a frequency band of 96-106 MHz, that is, the second frequency band is The 96-106 MHz band, but the embodiment of the present application is not limited thereto.

还应理解，本申请实施例中该第一类端口可以是一个端口，还可以是多个端口，例如，在在G.fast技术中，CPE侧存在106a端口和212a端口共存的情况，该106a端口和212a端口可以是一个，也可以是多个；同样的，该第二类端口可以是一个端口，也可以是多个端口。It should also be understood that, in the embodiment of the present application, the first type of port may be one port, or may be multiple ports. For example, in the G.fast technology, the CPE side has a coexistence of the 106a port and the 212a port, and the 106a The port and the 212a port may be one or more. Similarly, the second type of port may be one port or multiple ports.

具体而言，CO首先降低第二类端口上第一频段的功控参数，以降低该第一频段的功率谱密度(Power Spectral Density，简称“PSD”)，从而降低数据传输过程中该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，发起第一矢量化训练，该第一矢量化训练用于估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。Specifically, the CO first reduces the power control parameter of the first frequency band on the second type of port, so as to reduce the power spectral density ("PSD") of the first frequency band, thereby reducing the second in the data transmission process. The first vectorization training is performed on the interference of the first frequency band on the crosstalk frequency band of the first type of port, and the first vectorization training is used to estimate the second frequency band of the second type of port to the first type. The crosstalk channel of the crosstalk band on the port.

例如，在G.fast技术中，CPE侧存在106a端口和212a端口共存的情况，而CO侧只存在212a端口，假设106a端口是vectored端口，处于传输数据showtime阶段，212a端口是新上线端口，处于初始化状态，CO首先确定106a端口上需要进行串扰信道估计的串扰频段，例如该串扰频段为96-106MHz频段，然后降低212a端口上106-116MHz频段的功控参数功率微调因子(gain，简称“gi”)，从而降低212a端口上106-116MHz频段的PSD，然后发起第一矢量化训练，例如O-P-VECTOR 1训练，估计出212a端口上96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道。For example, in the G.fast technology, there are cases where the 106a port and the 212a port coexist on the CPE side, and only the 212a port exists on the CO side. Assume that the 106a port is a vectored port, in the showtime phase of transmitting data, and the 212a port is a new online port, in the Initialization state, the CO first determines the crosstalk frequency band on the 106a port that needs to perform crosstalk channel estimation, for example, the crosstalk frequency band is 96-106MHz frequency band, and then reduces the power control parameter power trimming factor of the 106-116MHz frequency band on the 212a port (gain, referred to as “gi” "), thereby reducing the PSD of the 106-116MHz band on the 212a port, then Initiating the first vectorization training, such as O-P-VECTOR 1 training, estimates the in-band crosstalk channel of the 96-106 MHz band on the 212a port to the 96-106 MHz band on the 106a port.

又例如，在G.fast技术中，假设212a端口是vectored端口，处于传输数据showtime阶段，106a端口是新上线端口，处于初始化状态，CO首先确定106a端口上需要进行串扰信道估计的串扰频段，例如该串扰频段为96-106MHz频段，然后对212a端口发起发送器初始化增益降低(Transmitter Initiated gain adjustment，简称“TIGA”)流程，降低212a端口上106-116MHz频段的功控参数相对增益补偿因子(Relative Gain Compensation Factors，简称“ri”)，从而降低212a端口上106-116MHz频段的PSD，然后发起第一矢量化训练，例如O-P-VECTOR 2训练，估计出212a端口96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道。For another example, in the G.fast technology, it is assumed that the port 212a is a vectored port, in the showtime phase of the transmission data, and the port 106a is the new uplink port. In the initial state, the CO first determines the crosstalk frequency band on the 106a port that needs to perform crosstalk channel estimation, for example, The crosstalk frequency band is a frequency band of 96-106 MHz, and then a Transmitter Initiated Gain Reduction (TIGA) process is initiated for the 212a port to reduce the power control parameter relative gain compensation factor of the 106-116 MHz frequency band on the 212a port (Relative Gain Compensation Factors ("ri"), thereby reducing the PSD of the 106-116MHz band on the 212a port, and then initiating the first vectorization training, such as the OP-VECTOR 2 training, estimating the 96a port 96-106MHz band on the 106a port 96 In-band crosstalk channel in the -106MHz band.

具体而言，TIGA流程为：对于下行方向，对发送的信号采用预编码技术进行串扰抵消，使得接收端接收到的信号没有来自其他端口的串扰干扰。但是，下行方向发送端发送信号的功率、PSD会受到严格限制，发送信号的总功率不能超过标准规定的最大值，这就要求下行的信号经过预编码后不会增大发送的总功率。解决功率限制的问题，以对信号的线性预编码处理为例，通常是使用归一化因子(比如：相对增益补偿因子ri)对经过预编码后的信号进行归一化放大和缩小，使得每条线路的发送信号都能满足PSD的限制，即使得发送的总功率不会超过规定的最大值，并通过在接收端同步协调使用恢复因子(1/ri)对接收到的信号进行恢复，以避免信号失真。Specifically, the TIGA process is: for the downlink direction, the transmitted signal is subjected to cross-talk cancellation using a precoding technique, so that the signal received by the receiving end has no crosstalk interference from other ports. However, the power and PSD of the signal transmitted by the transmitting end in the downlink direction are strictly limited, and the total power of the transmitted signal cannot exceed the maximum value specified by the standard. This requires that the downlink signal does not increase the total power transmitted after being precoded. To solve the problem of power limitation, taking the linear precoding process of the signal as an example, the normalized factor (for example, the relative gain compensation factor ri) is used to normalize the scaled signal to be normalized and reduced, so that each The transmission signal of the line can satisfy the limitation of the PSD, that is, the total power transmitted does not exceed the specified maximum value, and the received signal is recovered by synchronously using the recovery factor (1/ri) at the receiving end to Avoid signal distortion.

在本申请实施例中，可选地，该第一矢量化训练包括：In the embodiment of the present application, optionally, the first vectorization training includes:

在该第一类端口和该第二类端口上发送导频训练信号，以使局端进行误差估计；Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation;

接收该第一类端口上的误差样本信号；Receiving an error sample signal on the first type of port;

根据该第一类端口上的误差样本信号，估计该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道。And estimating, according to the error sample signal on the first type of port, the crosstalk channel of the second frequency band on the crosstalk frequency band of the first type of port.

具体而言，该第一矢量化训练可以由CO端的矢量化控制实体(Vectoring Control Entity，简称“VCE”)发起，VCE为该第一类端口和所述第二类端口分配第一导频序列PS1和第二导频序列PS2，保证该第一导频序列和该第二导频序列满足正交性。该第一类端口根据PS1发送第一导频训练信号，该第二类端口根据PS2发送第二导频训练信号。其中信号在线路上传输的过程中不同线路间会产生FEXT，所以接收端接收到的信号与发送端发送的信号之间可能存在一定的差异，接收端根据接收到的导频训练信号判断发送端发送的导频训练信号，并计算接收信号与发送信号之间的差异，获得误差样本信号，并将该误差样本信号发送给VCE，VCE根据接收到的第一类端口上的误差样本信号即可分析确定该第二类端口上该第二频段对该第一端口上该串扰频段的串扰信道。Specifically, the first vectorization training may be initiated by a vectoring control entity ("VCE") of the CO end, and the VCE allocates a first pilot sequence for the first type of port and the second type of port. The PS1 and the second pilot sequence PS2 ensure that the first pilot sequence and the second pilot sequence satisfy orthogonality. The first type of port sends a first pilot training signal according to PS1, and the second type of port sends a second pilot training signal according to PS2. The process of transmitting signals on the line The FEXT may be generated between different lines, so there may be a certain difference between the signal received by the receiving end and the signal sent by the transmitting end, and the receiving end judges the pilot training signal sent by the transmitting end according to the received pilot training signal, and Calculating the difference between the received signal and the transmitted signal, obtaining an error sample signal, and transmitting the error sample signal to the VCE, and the VCE can analyze and determine the second type of port according to the received error sample signal on the first type of port. The second frequency band is a crosstalk channel of the crosstalk frequency band on the first port.

例如，在G.fast技术中，假设106a端口是vectored端口，处于传输数据showtime阶段，212a端口是新上线端口，处于初始化状态，若该串扰频段为96-106MHz频段，CO降低212a端口上106-116MHz频段的功控参数gi，发起第一矢量化训练，VCE在106a端口和212a端口分配相互正交的导频序列PS1、PS2，106a端口根据PS1发送第一导频训练信号，212a端口根据PS2发送第二导频训练信号，由于212a端口上106-116MHz频段的功控参数gi已经降低，经过带外镜像后该频段发送的信号降低或者关闭，106a端口根据接收到的导频训练信号判断212端口发送的导频训练信号，并计算接收信号与发送信号之间的差异，获得误差样本信号，并将该误差样本信号发送给VCE，从而使VCE有效地估计出212a端口上96-106MHz频段对106a端口96-106MHz频段的串扰信道。For example, in G.fast technology, it is assumed that port 106a is a vectored port, in the showtime phase of transmitting data, port 212a is a new uplink port, in an initialized state, if the crosstalk band is in the 96-106 MHz band, CO is lowered on port 212a 106- The power control parameter gi of the 116 MHz band initiates the first vectorization training, and the VCE allocates mutually orthogonal pilot sequences PS1, PS2 at

ports

106a and 212a, and the port 106a transmits the first pilot training signal according to PS1, and the port 212a is based on PS2. Sending the second pilot training signal, since the power control parameter gi of the 106-116 MHz frequency band on the 212a port has been reduced, the signal transmitted by the frequency band is reduced or turned off after the out-of-band mirroring, and the 106a port judges 212 according to the received pilot training signal. The pilot training signal sent by the port, and calculating the difference between the received signal and the transmitted signal, obtaining an error sample signal, and transmitting the error sample signal to the VCE, so that the VCE effectively estimates the 96-106 MHz frequency band pair on the 212a port. 106a port crosstalk channel in the 96-106MHz band.

应理解，本申请实施例中降低第二类端口上第一频段的功控参数的目的是降低该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，更优选地，可以将该第二类端口上第一频段的功控参数降低至第一阈值或者关闭，从而将第二类端口上该第一频段对该第一类端口上该串扰频段的干扰降至最低。It should be understood that, in the embodiment of the present application, the purpose of reducing the power control parameter of the first frequency band on the second type of port is to reduce the interference of the first frequency band on the crosstalk frequency band of the first type of port, and more preferably The power control parameter of the first frequency band of the second type of port may be reduced to a first threshold or turned off, thereby reducing the interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port. lowest.

还应理解，上述举例中仅仅是以第一频段为该串扰频段的带外镜像频段，第二频段为该串扰频段为例进行说明，但本申请实施例并不限于此，第一频段也可以是该串扰频段，第二频段为该串扰频段的带外镜像频段，例如，在G.fast技术中，假设106a端口是vectored端口，处于传输数据showtime阶段，212a端口是新上线端口，处于初始化状态，CO首先确定106a端口上需要进行串扰信道估计的串扰频段，例如该串扰频段为96-106MHz频段，然后降低212a端口上96-106MHz频段的功控参数功率微调因子(gain，简称“gi”)，从而降低212a端口上96-106MHz频段的PSD，然后发起O-P-VECTOR 1训练，估计出212a端口上106-116MHz频段对106a端口上 96-106MHz频段的带内串扰信道。It should be understood that, in the above example, only the first frequency band is the out-of-band image frequency band of the cross-talk frequency band, and the second frequency band is the cross-talk frequency band as an example. However, the embodiment of the present application is not limited thereto, and the first frequency band may also be used. It is the crosstalk frequency band, and the second frequency band is the out-of-band image frequency band of the crosstalk frequency band. For example, in G.fast technology, it is assumed that port 106a is a vectored port, in the showtime phase of transmitting data, and port 212a is a new uplink port, which is in an initialization state. The CO first determines the crosstalk frequency band on the 106a port that needs to perform crosstalk channel estimation, for example, the crosstalk frequency band is 96-106 MHz frequency band, and then reduces the power control parameter power trimming factor (gain, referred to as "gi") of the 96-106 MHz frequency band on the 212a port. , thereby reducing the PSD of the 96-106MHz band on the 212a port, and then initiating the OP-VECTOR 1 training, estimating the 106-116MHz band on the 212a port on the 106a port. In-band crosstalk channel in the 96-106MHz band.

还应理解，本申请实施例仅以G.fast技术中106a和212a端口共存的情况进行说明，但本申请实施例并不限于此，只要是在数据传输过程中两个端口存在远端串扰的情况，均可以利用本申请实施例所提供的技术方案来解决。It should be understood that the embodiment of the present application is only described in the case where the

ports

106a and 212a coexist in the G.fast technology, but the embodiment of the present application is not limited thereto, as long as the two ports have far-end crosstalk during data transmission. The solution can be solved by using the technical solutions provided by the embodiments of the present application.

因此，本申请实施例的信道估计的方法，通过确定第一类端口上需要进行串扰信道估计的串扰频段，降低第二类端口上第一频段的功控参数，降低该第一频段的功率谱密度(Power Spectral Density，简称“PSD”)，从而降低数据传输过程中该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，进而有效地估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。Therefore, the method for channel estimation in the embodiment of the present application reduces the power control parameter of the first frequency band on the second type of port by determining the crosstalk frequency band of the first type of port that needs to perform crosstalk channel estimation, and reduces the power spectrum of the first frequency band. Density (Power Spectral Density, referred to as "PSD"), thereby reducing interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port during data transmission, thereby effectively estimating the second type of port The second frequency band is a crosstalk channel of the crosstalk band on the first type of port.

具体地，在本申请实施例中，可选地，如图4所示，该方法100还包括：Specifically, in the embodiment of the present application, optionally, as shown in FIG. 4, the method 100 further includes:

S130，恢复该第二类端口上该第一频段的功控参数至预定值；S130. Restore a power control parameter of the first frequency band on the second type of port to a predetermined value.

S140，根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；S140. Acknowledge the interference of the second frequency band on the crosstalk frequency band of the second type of port on the crosstalk frequency band of the first type of port according to the second frequency band of the second type of port. ;

S150，发起第二矢量化训练，该第二矢量化训练用于估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。S150. A second vectorization training is initiated, where the second vectorization training is used to estimate a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port.

具体而言，在S120估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道后，CO恢复该第二类端口上该第一频段的功控参数至预定值，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，进而通过发起第二矢量化训练，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Specifically, after the second frequency band of the second type of port is estimated to be the crosstalk channel of the crosstalk frequency band on the first type of port, the CO recovers the power control parameter of the first frequency band of the second type of port to a predetermined value. And canceling the interference of the second frequency band on the crosstalk frequency band of the first type of port, and then initiating the second vectorization training, effectively estimating the first frequency band of the second type of port A crosstalk channel of the crosstalk band on the first type of port.

应理解，该预定值为S110中该降低第二类端口上第一频段的功控参数前的功控参数值，即使得该第二类端口上该第一频段正常工作的功控参数值。It should be understood that the predetermined value is the value of the power control parameter before the power control parameter of the first frequency band on the second type of port in S110, that is, the power control parameter value of the first frequency band on the second type of port.

例如，在G.fast技术中，假设106a端口是vectored端口，处于传输数据showtime阶段，212a端口是新上线端口，处于初始化状态，若该串扰频段为96-106MHz频段，在估计出212a端口上96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道后，CO恢复212a端口上106-116MHz频段的功控参数gi，抵消212a端口上96-106MHz频段对106a端口上96-106 MHz频段的干扰，然后发起第二矢量化训练，例如O-P-VECTOR 1训练，估计出212a端口上106-116MHz频段对106a端口上96-106MHz频段的带外串扰信道。For example, in G.fast technology, it is assumed that port 106a is a vectored port, in the showtime phase of transmitting data, port 212a is a new uplink port, and is in an initial state. If the crosstalk band is in the 96-106 MHz band, 96 out of port 212a is estimated. After the -106MHz band is used for the in-band crosstalk channel in the 96-106MHz band on the 106a port, the CO restores the power control parameter gi of the 106-116MHz band on the 212a port, offsetting the 96-106MHz band on the 212a port to the 106a port on the 96-106 port. The interference in the MHz band is then initiated by a second vectorization training, such as O-P-VECTOR 1 training, to estimate the out-of-band crosstalk channel in the 96-106 MHz band on the 212a port for the 96-106 MHz band on the 106a port.

又例如，在G.fast技术中，假设212a端口是vectored端口，处于传输数据showtime阶段，106a端口是新上线端口，处于初始化状态，若该串扰频段为96-106MHz频段，在估计出212a端口上96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道后，CO恢复212a端口上106-116MHz频段的功控参数ri，抵消212a端口上96-106MHz频段对106a端口上96-106MHz频段的干扰，然后发起第二矢量化训练，例如O-P-VECTOR 2训练，估计出212a端口上106-116MHz频段对106a端口上96-106MHz频段的带外串扰信道。For example, in the G.fast technology, it is assumed that the port 212a is a vectored port, in the showtime phase of transmitting data, and the port 106a is a new uplink port, which is in an initial state. If the crosstalk band is in the 96-106 MHz band, the port 212a is estimated. After the 96-106MHz band is used for the in-band crosstalk channel in the 96-106MHz band on the 106a port, the CO recovers the power control parameter ri of the 106-116MHz band on the 212a port, offsetting the 96-106MHz band on the 212a port and the 96-106MHz band on the 106a port. The interference is then initiated by a second vectorization training, such as OP-VECTOR 2 training, to estimate the out-of-band crosstalk channel in the 96-106 MHz band on the 212a port for the 96-106 MHz band on the 106a port.

在本申请实施例中，可选地，该第二矢量化训练包括：In the embodiment of the present application, optionally, the second vectorization training includes:

根据该第一类端口上的误差新本信号，估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。And estimating, according to the error new signal on the first type of port, the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port.

应理解，该第二矢量化训练与该第一矢量化训练过程类似，为了简洁，在此不再赘述。It should be understood that the second vectorization training is similar to the first vectorization training process, and is not described herein for brevity.

因此，本申请实施例的信道估计的方法，通过恢复该第二类端口上该第一频段的功控参数，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Therefore, the method for channel estimation in the embodiment of the present application recovers the second frequency band on the second type of port and the crosstalk frequency band on the first type of port by restoring the power control parameter of the first frequency band on the second type of port. Interference, effectively estimating the crosstalk channel of the first frequency band on the crosstalk band of the first type of port on the second type of port.

具体地，在本申请实施例中，可选地，如图5所示，该方法100还包括：Specifically, in the embodiment of the present application, optionally, as shown in FIG. 5, the method 100 further includes:

S160，根据该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰。S160. Acknowledge the interference of the first frequency band on the crosstalk frequency band of the first type of port on the crosstalk frequency band of the first type of port according to the first frequency band of the second type of port. .

具体而言，CO在估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道后，进而抵消第二类端口上该第一频段对该第一类端口上该串扰频段的干扰。Specifically, after estimating the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port, the CO cancels the first frequency band of the second type of port to the first type of port. The interference on the crosstalk band.

因此，本申请实施例的信道估计的方法，通过恢复该第二类端口上该第一频段的功控参数，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，可以保证每个频点上的第二类端口的第一频段频和第二频段对第一类端口上串扰频段的串扰信道的有效地估计，从而保障了第一类端口和第二类端口共存环境下第一类端口的性能和稳定性。Therefore, the method for channel estimation in the embodiment of the present application recovers the first type of port by using the The power control parameter of the first frequency band cancels the interference of the second frequency band on the crosstalk frequency band of the first type of port, and effectively estimates the first frequency band of the second type of port to the first type The crosstalk channel of the crosstalk frequency band on the port cancels the interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, and can ensure the frequency of the first frequency band of the second type of port at each frequency point The second frequency band effectively estimates the crosstalk channel of the crosstalk frequency band on the first type of port, thereby ensuring the performance and stability of the first type of port in the first type port and the second type port coexistence environment.

具体地，在本申请实施例中，可选地，如图6所示，该方法100还包括：Specifically, in the embodiment of the present application, optionally, as shown in FIG. 6, the method 100 further includes:

S141，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；S141. The power control parameter of the second frequency band on the second type of port is reduced to reduce interference of the second frequency band on the crosstalk frequency band of the first type of port.

具体而言，在S120估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道后，CO可以降低该第二类端口上该第二频段的功控参数，从而降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，进而通过发起第二矢量化训练，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Specifically, after estimating the crosstalk channel of the second frequency band on the crosstalk frequency band of the second type of port on the second type of port, the CO can reduce the power control parameter of the second frequency band on the second type of port, thereby The interference of the second frequency band on the crosstalk frequency band of the first type of port is reduced, and the second frequency vector is trained to effectively estimate the first frequency band of the second type of port. A crosstalk channel of the crosstalk band on a type of port.

例如，在G.fast技术中，假设106a端口是vectored端口，处于传输数据showtime阶段，212a端口是新上线端口，处于初始化状态，若该串扰频段为96-106MHz频段，在估计出212a端口上96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道后，CO恢复212a端口上106-116MHz频段的功控参数gi，并降低212a端口上96-106MHz频段的功控参数gi，从而降低212a端口上96-106MHz频段的PSD，然后发起O-P-VECTOR 1训练，估计出212a端口上106-116MHz频段对106a端口上96-106MHz频段的带外串扰信道。For example, in G.fast technology, it is assumed that port 106a is a vectored port, in the showtime phase of transmitting data, port 212a is a new uplink port, and is in an initial state. If the crosstalk band is in the 96-106 MHz band, 96 out of port 212a is estimated. After the -106MHz band is used for the in-band crosstalk channel in the 96-106MHz band on the 106a port, the CO restores the power control parameter gi of the 106-116MHz band on the 212a port, and reduces the power control parameter gi of the 96-106MHz band on the 212a port, thereby reducing The PSD of the 96-106 MHz band on the 212a port is then trained by the OP-VECTOR 1 to estimate the out-of-band crosstalk channel in the 96-106 MHz band on the 212a port to the 96-106 MHz band on the 106a port.

又例如，在G.fast技术中，假设212a端口是vectored端口，处于传输数据showtime阶段，106a端口是新上线端口，处于初始化状态，若该串扰频段为96-106MHz频段，在估计出212a端口上96-106MHz频段对106a端口上96-106MHz频段的带内串扰信道后，CO发起TIGA流程，恢复212a端口上106-116MHz频段的功控参数ri，并降低212a端口上96-106MHz频段的功控参数ri，从而降低212a端口上96-106MHz频段的PSD，然后发起O-P-VECTOR 1训练，估计出212a端口上106-116MHz频段对106a端口上96-106MHz频段的带外串扰信道。For example, in the G.fast technology, it is assumed that the port 212a is a vectored port, in the showtime phase of transmitting data, and the port 106a is a new uplink port, which is in an initial state. If the crosstalk band is in the 96-106 MHz band, the port 212a is estimated. 96-106MHz band pair 106a port After the in-band crosstalk channel in the 96-106MHz band, the CO initiates the TIGA process, recovers the power control parameter ri of the 106-116MHz band on the 212a port, and reduces the power control parameter ri of the 96-106MHz band on the 212a port, thereby reducing the 212a port. The PSD in the 96-106MHz band is then trained to initiate OP-VECTOR 1 to estimate the out-of-band crosstalk channel in the 96-106 MHz band on the 212a port for the 96-106 MHz band on the 106a port.

应理解，本申请实施例中降低该第二类端口上该第二频段的功控参数的目的是降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，更优选地，可以将该第二类端口上第二频段的功控参数降低至第一阈值或者关闭，从而将第二类端口上该第二频段对该第一类端口上该串扰频段的干扰降至最低。It should be understood that, in the embodiment of the present application, the purpose of reducing the power control parameter of the second frequency band on the second type of port is to reduce interference of the second frequency band on the crosstalk frequency band of the first type of port. More preferably, the power control parameter of the second frequency band on the second type of port may be reduced to a first threshold or closed, so that the second frequency band of the second type of port interferes with the crosstalk frequency band on the first type of port. Minimized.

还应理解，本申请实施例的降低该第二类端口上该第二频段的功控参数与抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰的作用相同，都是为了降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，从而在发起第二矢量化训练后有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。It should also be understood that, in the embodiment of the present application, the function of reducing the power control parameter of the second frequency band on the second type of port and canceling the interference of the second frequency band on the crosstalk frequency band of the first type of port on the second type of port The same is to reduce the interference of the second frequency band on the crosstalk frequency band of the first type of port on the second type of port, so as to effectively estimate the second type of port after initiating the second vectorization training. A frequency band crosstalk channel of the crosstalk band on the first type of port.

还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行的先后顺序，各个过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should also be understood that, in the various embodiments of the present application, the size of the sequence numbers of the above processes does not imply a sequence of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application. The implementation of the examples constitutes any limitation.

因此，本申请实施例的信道估计的方法，通过恢复该第二类端口上该第一频段的功控参数，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Therefore, in the method for channel estimation in the embodiment of the present application, the power control parameter of the first frequency band on the second type of port is restored, and the power control parameter of the second frequency band on the second type of port is decreased to reduce the second The interference of the second frequency band on the crosstalk frequency band of the first type of port on the class port effectively estimates the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port.

具体地，在本申请实施例中，可选地，如图7所示，该方法100还包括：Specifically, in the embodiment of the present application, optionally, as shown in FIG. 7, the method 100 further includes:

S161，根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，和该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；S161, according to the second frequency band of the second type of port, the crosstalk channel of the crosstalk frequency band on the first type of port, and the crosstalk of the first frequency band of the second type of port to the crosstalk frequency band of the first type of port a channel that cancels interference of the second frequency band on the second type of port and the second frequency band on the second type of port on the crosstalk frequency band of the first type of port;

S170，恢复该第二类端口上该第二频段的功控参数至预定值。S170. Restore the power control parameter of the second frequency band on the second type of port to a predetermined value.

具体而言，在估计出该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道后，进而抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，恢复该第二类端口上该第二频段的功控参数至预定值。Specifically, after estimating the crosstalk channel of the second frequency band on the first type of port and the crosstalk frequency band of the crosstalk frequency band on the first type of port, the second type of port is offset The second frequency band on the first frequency band and the second type of port, the crosstalk frequency band on the first type of port The interference recovers the power control parameter of the second frequency band on the second type of port to a predetermined value.

应理解，该预定值为S141中该降低第二类端口上第二频段的功控参数前的功控参数值，即使得该第二类端口上该第二频段正常工作的功控参数值。It should be understood that the predetermined value is the value of the power control parameter before the power control parameter of the second frequency band on the second type of port in S141, that is, the value of the power control parameter that makes the second frequency band work normally on the second type of port.

应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行的先后顺序，各个过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

因此，本申请实施例的信道估计的方法，通过恢复该第二类端口上该第一频段的功控参数，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，可以保证每个频点上的第二类端口的第一频段和第二频段对第一类端口上串扰频段的串扰信道的有效地估计，从而保障了第一类端口和第二类端口共存环境下第一类端口的性能和稳定性。Therefore, in the method for channel estimation in the embodiment of the present application, the power control parameter of the first frequency band on the second type of port is restored, and the power control parameter of the second frequency band on the second type of port is decreased to reduce the second Interference of the second frequency band on the crosstalk frequency band on the first type of port, effectively estimating the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port, offsetting the The first frequency band of the second type of port and the second frequency band of the second type of port interfere with the crosstalk frequency band of the first type of port, and the first frequency band of the second type of port at each frequency point can be ensured. The second frequency band effectively estimates the crosstalk channel of the crosstalk frequency band on the first type of port, thereby ensuring the performance and stability of the first type of port in the first type port and the second type port coexistence environment.

上文中结合图3至图7，详细描述了根据本申请实施例的信道估计的方法，下面将结合图8至图11，详细描述根据本申请实施例的信道估计的装置。The method for channel estimation according to an embodiment of the present application is described in detail above with reference to FIG. 3 to FIG. 7. Hereinafter, an apparatus for channel estimation according to an embodiment of the present application will be described in detail with reference to FIG. 8 to FIG.

图8示出了根据本申请实施例的信道估计的装置200，如图8所示，该装置200包括：FIG. 8 shows an apparatus 200 for channel estimation according to an embodiment of the present application. As shown in FIG. 8, the apparatus 200 includes:

调节模块210，用于降低第二类端口上第一频段的功控参数，以降低该第二类端口上该第一频段对第一类端口上串扰频段的干扰，其中，该第一类端口的传输频带包括该串扰频段，该第二类端口的传输频带包括该串扰频段和该串扰频段相对于该第一类端口的传输频带的带外镜像频段；The adjustment module 210 is configured to reduce the power control parameter of the first frequency band on the second type of port, so as to reduce the interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, where the first type of port The transmission frequency band includes the crosstalk frequency band, and the transmission frequency band of the second type of port includes the crosstalk frequency band and an out-of-band image frequency band of the crosstalk frequency band relative to a transmission frequency band of the first type of port;

第一估计模块220，用于发起第一矢量化训练，该第一矢量化训练用于估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。The first estimation module 220 is configured to initiate a first vectorization training, where the first vectorization training is used to estimate a crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port.

因此，本申请实施例的信道估计的装置，通过确定第一类端口上需要进行串扰信道估计的串扰频段，降低第二类端口上第一频段的功控参数，以降低该第一频段的功率谱密度(Power Spectral Density，简称“PSD”)，从而降低数据传输过程中该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，进而有效地估计该第二类端口上第二频段对该第一类端口上该串扰频段的串扰信道。 Therefore, the apparatus for channel estimation in the embodiment of the present application reduces the power control parameter of the first frequency band on the second type of port by determining the crosstalk frequency band of the first type of port that needs to perform crosstalk channel estimation, so as to reduce the power of the first frequency band. Power Spectral Density ("PSD"), thereby reducing interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port during data transmission, thereby effectively estimating the second type The second frequency band on the port is the crosstalk channel of the crosstalk band on the first type of port.

具体而言，在本申请实施例中，可选地，该调节模块210还用于：恢复该第二类端口上该第一频段的功控参数至预定值，如图9所示，该装置200还包括：Specifically, in the embodiment of the present application, the adjustment module 210 is further configured to: restore the power control parameter of the first frequency band on the second type of port to a predetermined value, as shown in FIG. 200 also includes:

抵消模块230，用于根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；The canceling module 230 is configured to cancel the crosstalk channel of the crosstalk band on the first type of port according to the second frequency band on the second type of port, and cancel the second frequency band on the second type of port. Interference in the crosstalk band;

第二估计模块240，用于发起第二矢量化训练，该第二矢量化训练用于估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。The second estimation module 240 is configured to initiate a second vectorization training, where the second vectorization training is used to estimate a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port.

因此，本申请实施例的信道估计的装置，通过恢复该第二类端口上该第一频段的功控参数，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Therefore, the apparatus for channel estimation in the embodiment of the present application cancels the second frequency band on the second type of port and the crosstalk frequency band on the first type of port by restoring the power control parameter of the first frequency band on the second type of port. Interference, effectively estimating the crosstalk channel of the first frequency band on the crosstalk band of the first type of port on the second type of port.

具体而言，在本申请实施例中，可选地，该抵消模块230还用于：根据该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段对该第一类端口上该串扰频段的干扰。Specifically, in the embodiment of the present application, the cancellation module 230 is further configured to: cancel the crosstalk channel of the crosstalk frequency band on the first type of port according to the first frequency band on the second type of port The interference of the first frequency band on the crosstalk frequency band on the first type of port on the second type of port.

因此，本申请实施例的信道估计的装置，通过恢复该第二类端口上该第一频段的功控参数，抵消该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消第二类端口上该第一频段对该第一类端口上该串扰频段的干扰，可以保证每个频点上的第二类端口的第一频段和第二频段对第一类端口上串扰频段的串扰信道的有效地估计，从而保障了第一类端口和第二类端口共存环境下第一类端口的性能和稳定性。Therefore, the apparatus for channel estimation in the embodiment of the present application cancels the second frequency band on the second type of port and the crosstalk frequency band on the first type of port by restoring the power control parameter of the first frequency band on the second type of port. Interference, effectively estimating the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, canceling the crosstalk of the first frequency band on the first type of port on the second type of port The interference of the frequency band can ensure the effective estimation of the crosstalk channel of the crosstalk frequency band of the first type of port on the first frequency band and the second frequency band of the second type of port at each frequency point, thereby ensuring the first type of port and the second type Performance and stability of the first type of port in a port-like coexistence environment.

具体而言，在本申请实施例中，可选地，该调节模块210还用于：恢复该第二类端口上该第一频段的功控参数至预定值，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；Specifically, in the embodiment of the present application, the adjustment module 210 is further configured to: restore the power control parameter of the first frequency band on the second type of port to a predetermined value, and reduce the second type of port. a power control parameter of the second frequency band to reduce interference of the second frequency band on the crosstalk frequency band of the first type of port on the second type of port;

该第二估计模块240还用于：发起第二矢量化训练，该第二矢量化训练用于估计该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。The second estimation module 240 is further configured to: initiate a second vectorization training, where the second vectorization training is used to estimate a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port.

因此，本申请实施例的信道估计的装置，通过恢复该第二类端口上该第一频段的功控参数，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道。Therefore, the apparatus for channel estimation in the embodiment of the present application reduces the power control parameter of the second frequency band on the second type of port by restoring the power control parameter of the first frequency band, so as to reduce the power control parameter of the second frequency band. The interference of the second frequency band on the crosstalk frequency band of the first type of port on the second type of port effectively estimates the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port.

具体而言，在本申请实施例中，可选地，如图10所示，该抵消模块还用于：根据该第二类端口上该第二频段对该第一类端口上该串扰频段的串扰信道，和该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰；Specifically, in the embodiment of the present application, optionally, as shown in FIG. 10, the cancellation module is further configured to: according to the second frequency band on the second type of port, the crosstalk frequency band on the first type of port a crosstalk channel, and a crosstalk channel of the first frequency band to the crosstalk frequency band of the first type of port on the second type of port, canceling the second frequency band and the second frequency band of the second type of port Interference with the crosstalk band on the first type of port;

该调节模块210还用于：恢复该第二类端口上该第二频段的功控参数至预定值。The adjustment module 210 is further configured to: restore the power control parameter of the second frequency band on the second type of port to a predetermined value.

因此，本申请实施例的信道估计的装置，通过恢复该第二类端口上该第一频段的功控参数至预定值，降低该第二类端口上该第二频段的功控参数，以降低该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，有效地估计出该第二类端口上该第一频段对该第一类端口上该串扰频段的串扰信道，抵消该第二类端口上该第一频段和该第二类端口上该第二频段对该第一类端口上该串扰频段的干扰，可以保证每个频点上的第二类端口的第一频段频和第二频段对第一类端口上串扰频段的串扰信道的有效地估计，从而保障了第一类端口和第二类端口共存环境下第一类端口的性能和稳定性。Therefore, the apparatus for channel estimation in the embodiment of the present application reduces the power control parameter of the second frequency band on the second type of port to a predetermined value by restoring the power control parameter of the first frequency band on the second type of port, so as to reduce the power control parameter of the second frequency band on the second type of port. Interference of the second frequency band on the crosstalk frequency band on the first type of port, effectively estimating the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port And canceling the interference of the second frequency band on the second type of port and the second frequency band of the second type of port on the crosstalk frequency band of the first type of port, and ensuring the second type of port on each frequency point The effective estimation of the crosstalk channel of the crosstalk frequency band on the first type of port by the first frequency band and the second frequency band ensures the performance and stability of the first type of port in the coexistence environment of the first type port and the second type port.

根据本申请实施例的信道估计的装置200可对应于本申请实施例的信道估计的方法100的执行主体，并且装置200中的各个模块的上述和其他操作和/或功能分别为了实现图3至图7中的各个方法的相应流程，为了简洁，在此不再赘述。The apparatus 200 for channel estimation according to an embodiment of the present application may correspond to an execution body of the method 100 of channel estimation of the embodiment of the present application, and the above and other operations and/or functions of the respective modules in the apparatus 200 are respectively implemented in order to implement FIG. The corresponding processes of the respective methods in FIG. 7 are not described herein again for the sake of brevity.

图11示出了本申请的又一实施例提供的信道估计的装置的结构，包括至少一个处理器1102(例如CPU)，至少一个通信接口1105，存储器1106，和至少一个通信总线1103。通信总线1103用于实现各部件之间的连接通信。处理器1102用于执行存储器1106中存储的可执行模块，例如计算机程序。存储器1106可以包括高速随机存取存储器(Random Access Memory，RAM)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。通过至少一个通信接口1105实现与至少一个其他设备之间的通信连接。在一些实施方式中，存储器1106存储了程序11061，处理器1102执行程序11061，用于执行前述本申请各种实施例中的方法。11 shows the structure of an apparatus for channel estimation provided by still another embodiment of the present application, including at least one processor 1102 (for example, a CPU), at least one communication interface 1105, a memory 1106, and at least one communication bus 1103. The communication bus 1103 is used to implement connection communication between components. The processor 1102 is configured to execute executable modules, such as computer programs, stored in the memory 1106. The memory 1106 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory. A communication connection with at least one other device is achieved by at least one communication interface 1105. In some embodiments, memory 1106 stores program 11061, and processor 1102 executes program 11061 for performing the methods of the various embodiments of the foregoing.

可选地，本申请实施例的信道估计的装置还可以为CO端设备的一部分或者CO整体。Optionally, the device for channel estimation in the embodiment of the present application may also be part of a CO end device. Or CO as a whole.

本领域普通技术人员可以意识到，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申请的范围。Those of ordinary skill in the art will 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, for clarity of 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 to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be in essence or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. Including a number of instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present application Step by step. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求所述的保护范围为准。 The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of the application should be determined by the scope of protection described in the claims.

Claims

一种信道估计的方法，其特征在于，包括：A method for channel estimation, comprising:

降低第二类端口上第一频段的功控参数，以降低所述第二类端口上所述第一频段对第一类端口上串扰频段的干扰，其中，所述第一类端口的传输频带包括所述串扰频段，所述第二类端口的传输频带包括所述串扰频段和所述串扰频段相对于所述第一类端口的传输频带的带外镜像频段；The power control parameter of the first frequency band on the second type of port is reduced to reduce the interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, where the transmission frequency band of the first type of port Including the crosstalk frequency band, the transmission frequency band of the second type of port includes an out-of-band mirroring frequency band of the crosstalk frequency band and the crosstalk frequency band relative to a transmission frequency band of the first type of port;

发起第一矢量化训练，所述第一矢量化训练用于估计所述第二类端口上第二频段对所述第一类端口上所述串扰频段的串扰信道，其中，所述第一频段为所述串扰频段，所述第二频段为所述带外镜像频段，或者，所述第一频段为所述带外镜像频段，所述第二频段为所述串扰频段。Initiating a first vectorization training, where the first vectorization training is used to estimate a crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port, where the first frequency band For the crosstalk frequency band, the second frequency band is the out-of-band image frequency band, or the first frequency band is the out-of-band image frequency band, and the second frequency band is the crosstalk frequency band.
根据权利要求1所述的方法，其特征在于，所述方法还包括:The method of claim 1 further comprising:

恢复所述第二类端口上所述第一频段的功控参数至预定值；Recovering the power control parameter of the first frequency band on the second type of port to a predetermined value;

根据所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；Offset the second frequency band on the second type of port to the first type of port according to the second frequency band of the second type of port to the crosstalk channel of the crosstalk frequency band on the first type of port Interference in the crosstalk band;

发起第二矢量化训练，所述第二矢量化训练用于估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。A second vectorization training is initiated, and the second vectorization training is used to estimate a crosstalk channel of the first frequency band on the second type of port to the crosstalk frequency band on the first type of port.
根据权利要求2所述的方法，其特征在于，所述方法还包括：The method of claim 2, wherein the method further comprises:

根据所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的干扰。Offset the first frequency band on the second type of port to the first type of port according to the crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port The interference of the crosstalk band.
根据权利要求1所述的方法，其特征在于，所述方法还包括：The method of claim 1 further comprising:

恢复所述第二类端口上所述第一频段的功控参数至预定值；Recovering the power control parameter of the first frequency band on the second type of port to a predetermined value;

降低所述第二类端口上所述第二频段的功控参数，以降低所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；Reducing the power control parameter of the second frequency band on the second type of port to reduce interference of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port;

发起第二矢量化训练，所述第二矢量化训练用于估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。A second vectorization training is initiated, and the second vectorization training is used to estimate a crosstalk channel of the first frequency band on the second type of port to the crosstalk frequency band on the first type of port.
根据权利要求4所述的方法，其特征在于，所述方法还包括：The method of claim 4, wherein the method further comprises:

根据所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道，和所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第一频段和所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；And a crosstalk channel of the crosstalk frequency band on the first type of port according to the second frequency band on the second type of port, and the first frequency band on the first type of port on the second type of port a crosstalk channel of the crosstalk frequency band, canceling the first frequency band and the second type end on the second type of port Interference of the second frequency band on the port to the crosstalk frequency band on the first type of port;

恢复所述第二类端口上所述第二频段的功控参数至预定值。Recovering the power control parameter of the second frequency band on the second type of port to a predetermined value.
根据权利要求4或5所述的方法，其特征在于，所述降低所述第二类端口上所述第二频段的功控参数包括：将所述功控参数关闭。The method according to claim 4 or 5, wherein the reducing the power control parameter of the second frequency band on the second type of port comprises: turning off the power control parameter.
根据权利要求1至6中任一项所述的方法，其特征在于，所述降低第二类端口上第一频段的功控参数包括：将所述功控参数关闭。The method according to any one of claims 1 to 6, wherein the reducing the power control parameter of the first frequency band on the second type of port comprises: turning off the power control parameter.
根据权利要求2至7中任一项所述的方法，其特征在于，所述第二矢量化训练包括：The method according to any one of claims 2 to 7, wherein the second vectorization training comprises:

在所述第一类端口和所述第二类端口上发送导频训练信号，以使局端进行误差估计；Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation;

接收所述第一类端口上的误差样本信号；Receiving an error sample signal on the first type of port;

根据所述第一类端口上的误差样本信号，估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。And estimating, according to the error sample signal on the first type of port, a crosstalk channel of the first frequency band on the crosstalk frequency band on the first type of port.
根据权利要求1至8中任一项所述的方法，其特征在于，所述第一矢量化训练包括：The method according to any one of claims 1 to 8, wherein the first vectorization training comprises:

在所述第一类端口和所述第二类端口上发送导频训练信号，以使局端进行误差估计；Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation;

接收所述第一类端口上的误差样本信号；Receiving an error sample signal on the first type of port;

根据所述第一类端口上的误差样本信号，估计所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道。And estimating, according to the error sample signal on the first type of port, a crosstalk channel of the second frequency band on the crosstalk frequency band on the first type of port.
根据权利要求1至9中任一项所述的方法，其特征在于，所述功控参数包括相对增益补偿因子ri或功率微调因子gi。The method according to any one of claims 1 to 9, wherein the power control parameter comprises a relative gain compensation factor ri or a power fine adjustment factor gi.
根据权利要求10所述的方法，其特征在于，在所述第二类端口处于传输数据showtime阶段，且所述第一类端口处于初始化状态时，所述功控参数为ri。The method according to claim 10, wherein the power control parameter is ri when the second type of port is in a showtime phase of transmission data, and the first type of port is in an initialized state.
根据权利要求10所述的方法，其特征在于，在所述第一类端口处于传输数据showtime阶段，且所述第二类端口处于初始化状态时，所述功控参数为gi。The method according to claim 10, wherein the power control parameter is gi when the first type of port is in a transmission data showtime phase and the second type of port is in an initialized state.
一种信道估计的装置，其特征在于，包括：A device for channel estimation, comprising:

调节模块，用于降低第二类端口上第一频段的功控参数，以降低所述第二类端口上所述第一频段对第一类端口上串扰频段的干扰，其中，所述第一类端口的传输频带包括所述串扰频段，所述第二类端口的传输频带包括所述串扰频段和所述串扰频段相对于所述第一类端口的传输频带的带外镜像频段；An adjustment module, configured to reduce a power control parameter of the first frequency band on the second type of port, to reduce interference of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, where the first The transmission band of the class port includes the crosstalk band, and the transmission band of the second port includes the crosstalk band and an outband mirror band of the cross band relative to the transmission band of the first port;

第一估计模块，用于发起第一矢量化训练，所述第一矢量化训练用于估计所述第二类端口上第二频段对所述第一类端口上所述串扰频段的串扰信道，a first estimation module, configured to initiate a first vectorization training, where the first vectorization training is used to estimate a crosstalk channel of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port,

其中，所述第一频段为所述串扰频段，所述第二频段为所述带外镜像频段，或者，The first frequency band is the crosstalk frequency band, and the second frequency band is the out-of-band image frequency band, or

所述第一频段为所述带外镜像频段，所述第二频段为所述串扰频段。The first frequency band is the out-of-band image band, and the second frequency band is the cross-talk band.
根据权利要求13所述的装置，其特征在于，所述调节模块还用于：恢复所述第二类端口上所述第一频段的功控参数至预定值，所述装置还包括：The device according to claim 13, wherein the adjustment module is further configured to: restore a power control parameter of the first frequency band on the second type of port to a predetermined value, the device further comprising:

抵消模块，用于根据所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；And a canceling module, configured to cancel, according to the second frequency band of the second type of port, a crosstalk channel of the crosstalk frequency band on the first type of port, canceling the second frequency band pair on the second type of port Interference from the crosstalk band on the first type of port;

第二估计模块，用于发起第二矢量化训练，所述第二矢量化训练用于估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。a second estimation module, configured to initiate a second vectorization training, where the second vectorization training is used to estimate crosstalk of the first frequency band on the second type of port to the crosstalk frequency band on the first type of port channel.
根据权利要求14所述的装置，其特征在于，所述抵消模块还用于：根据所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的干扰。The apparatus according to claim 14, wherein the cancellation module is further configured to: according to the first frequency band of the second type of port, a crosstalk channel of the crosstalk frequency band on the first type of port, Compensating for interference of the first frequency band on the second type of port to the crosstalk frequency band on the first type of port.
根据权利要求13所述的装置，其特征在于，所述调节模块还用于：恢复所述第二类端口上所述第一频段的功控参数至预定值；降低所述第二类端口上所述第二频段的功控参数，以降低所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；The apparatus according to claim 13, wherein the adjustment module is further configured to: restore a power control parameter of the first frequency band on the second type of port to a predetermined value; and decrease the second type of port a power control parameter of the second frequency band to reduce interference of the second frequency band on the second type of port to the crosstalk frequency band on the first type of port;

所述第二估计模块还用于：发起第二矢量化训练，所述第二矢量化训练用于估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。The second estimation module is further configured to: initiate a second vectorization training, where the second vectorization training is used to estimate the crosstalk on the first type of port on the first type of port The crosstalk channel of the band.
根据权利要求16所述的装置，其特征在于，所述抵消模块还用于：根据所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道，和所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道，抵消所述第二类端口上所述第一频段和所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的干扰；The apparatus according to claim 16, wherein the cancellation module is further configured to: pair the crosstalk frequency band on the first type of port according to the second frequency band on the second type of port a crosstalk channel, and a crosstalk channel of the first frequency band on the crosstalk frequency band of the first type of port on the second type of port, canceling the first frequency band and the second frequency on the second type of port Interference of the second frequency band on the class port to the crosstalk frequency band on the first type of port;

所述调节模块还用于：恢复所述第二类端口上所述第二频段的功控参数至预定值。The adjustment module is further configured to: restore a power control parameter of the second frequency band on the second type of port to a predetermined value.
根据权利要求16或17所述的装置，其特征在于，所述降低所述第二类端口上所述第二频段的功控参数包括：将所述功控参数关闭。The device according to claim 16 or 17, wherein the reducing the power control parameter of the second frequency band on the second type of port comprises: turning off the power control parameter.
根据权利要求13至18中任一项所述的装置，其特征在于，所述降低所述第二类端口上所述第一频段的功控参数包括：将所述功控参数关闭。The device according to any one of claims 13 to 18, wherein the reducing the power control parameter of the first frequency band on the second type of port comprises: turning off the power control parameter.
根据权利要求14至19中任一项所述的装置，其特征在于，第二估计模块具体用于：The device according to any one of claims 14 to 19, wherein the second estimating module is specifically configured to:

在所述第一类端口和所述第二类端口上发送导频训练信号，以使局端进行误差估计；Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation;

接收所述第一类端口上的误差样本信号；Receiving an error sample signal on the first type of port;

根据所述第一类端口上的误差样本信号，估计所述第二类端口上所述第一频段对所述第一类端口上所述串扰频段的串扰信道。And estimating, according to the error sample signal on the first type of port, a crosstalk channel of the first frequency band on the crosstalk frequency band on the first type of port.
根据权利要求13至20中任一项所述的装置，其特征在于，第一估计模块具体用于：The device according to any one of claims 13 to 20, wherein the first estimating module is specifically configured to:

在所述第一类端口和所述第二类端口上发送导频训练信号，以使局端进行误差估计；Transmitting a pilot training signal on the first type of port and the second type of port, so that the central office performs error estimation;

接收所述第一类端口上的误差样本信号；Receiving an error sample signal on the first type of port;

根据所述第一类端口上的误差样本信号，估计所述第二类端口上所述第二频段对所述第一类端口上所述串扰频段的串扰信道。And estimating, according to the error sample signal on the first type of port, a crosstalk channel of the second frequency band on the crosstalk frequency band on the first type of port.
根据权利要求13至21中任一项所述的装置，其特征在于，所述功控参数包括相对增益补偿因子ri或功率微调因子gi。The apparatus according to any one of claims 13 to 21, wherein the power control parameter comprises a relative gain compensation factor ri or a power fine adjustment factor gi.
根据权利要求22所述的装置，其特征在于，在所述第二类端口处于传输数据showtime阶段，且所述第一类端口处于初始化状态时，所述功控参数为ri。The apparatus according to claim 22, wherein said power control parameter is ri when said second type of port is in a transmission data showtime phase and said first type of port is in an initialized state.
根据权利要求22所述的装置，其特征在于，在所述第一类端口处于传输数据showtime阶段，且所述第二类端口处于初始化状态时，所述功控参数为gi。 The apparatus according to claim 22, wherein said power control parameter is gi when said first type of port is in a transmission data showtime phase and said second type of port is in an initialized state.