DE102018127093B3 - Method and device for determining faults caused by PLC modems - Google Patents

Abstract

A method comprising: determining a representative of a measure of interference in a frequency range of a DSL signal based at least on at least one first representative which is a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range and - at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; - wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range, in which a PLC modem does not transmit or transmits to a frequency sub-range of the second type with reduced power, and - wherein each frequency sub-range of the at least one frequency sub-range of the second type has a frequency sub-range of the frequency range hs represents in which a PLC modem transmits or at least predominantly transmits.

Description

The subject relates to a method and a device for determining a representative for a measure of a disturbance in a frequency range of a signal of a communication network, which is for example a DSL communication network.

Powerline communication (PLC) is a technology in which data is transmitted via energy supply networks or power supply networks. An energy supply network can be the in-house low-voltage installation as well as the supply network outside the house, or the medium and high voltage lines in the large interconnected networks of the energy suppliers.

For this purpose, the PLC modulates the data to be transmitted as a high-frequency signal on the electrical lines of the energy supply network. The frequencies used in current technical implementations are in the range between 90 kHz and 100 MHz, and this frequency range can also be expanded up and / or down. The high-frequency signals are carried by the currently routed copper lines (power supply lines), whereby PLC can, for example, also carry out a MIMO transmission over more than two lines of the power supply lines.

Due to electrical crosstalk of the Powerline signals from the power lines, for example to the telephone lines, the DSL connection quality can be impaired in rare cases. These impairments can result in a reduced DSL data rate or even complete disconnections.

The German patent application DE 10 2013 105 626 A1 describes a method and a device for carrying out communication over at least one power line of a power supply network using at least one frequency band, for determining whether an interference component has occurred in a signal of a monitoring frequency band during at least a first power network period, the frequency band differing from the monitoring frequency band , for determining at least one occurrence period of the at least one interference component during the first power network period and for lowering a transmission power in at least one frequency band at least for the determined occurrence duration in at least one subsequent power network period.

The German patent application DE 10 2011 052 734 A1 describes an apparatus and a method for performing communication over power lines of a power supply network using a plurality of frequency bands; for receiving at least one signal in at least one frequency band of the plurality of frequency bands during communication via power lines of the power supply network, for determining whether at least one signal of the at least one received signal has a predefined interference component, and for lowering a transmission power in at least one frequency band, in which a predefined interference component has been determined for a received signal during communication via power lines of the power supply network.

The German patent DE 199 14 797 B4 discloses a method for receiving a multi-carrier signal (ms) having a plurality of frequency-discrete subcarriers (st1 ... n), into which information converted into frequency-discrete, modulation-specific modulation symbols is inserted with the aid of a multi-carrier method, the individual frequency-discrete subcarriers (st1 ... n) of the multicarrier signal (ms) transmitted via a transmission medium (FK) each have subcarrier-specific interferences (ici0) caused by subcarriers (st1 ... n) arranged adjacent in the frequency range, the subcarriers (st1 ... n) of the received multicarrier signal (ms ) are additionally deliberately superimposed with predetermined test disturbances, the modulation symbols contained in the deliberately disturbed multicarrier signal (ms) are compared with undisturbed, modulation-specific modulation symbols and subcarrier-specific error information (AE1 ... n) is derived from the comparison results, and depending on v On the basis of the specified test faults and depending on the derived subcarrier-specific error information (AE1 ... n), correction information (iciopt) representing the subcarrier-specific faults (ici0) is derived, and the subcarriers (st1 ... n) of the received multicarrier signal (ms) be corrected in accordance with the determined correction information (iciopt).

From the disadvantages indicated above, the present object was based on the object of providing a method and a device which measure a disturbance in a frequency range of a signal of a communication network which is not a PLC communication network and which, for example, a DSL Communication network is to be made possible, in particular without the need for special test signals which are sent, for example, on the PLC side.

In accordance with an exemplary aspect of the invention, a method is disclosed that includes determining a representative of a measure of Interference in a frequency range of a DSL signal comprises, at least based on (i) at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents in which a PLC modem (eg the PLC modem) transmits or at least predominantly transmits. For example, the reduced transmission power of the PLC modem in a frequency subrange of the first type compared to a transmission power of the PLC modem in a frequency subrange of the second type means that the transmission power of the PLC modem in a frequency subrange of the first type compared to a transmission power of the PLC modem in a frequency sub-range of the second type is reduced by at least 10dB, or at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB. For example, the reduced transmission power of the PLC modem in a frequency sub-range of the first type can represent a significantly reduced transmission power of the PLC modem in a frequency sub-range of the first type, the transmission power of the PLC modem in a frequency sub-range of the first type then compared to a transmission power of the PLC modems in a frequency subrange of the second type is reduced by at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB, or at least 60dB. For example, the transmission power of the PLC modem can be reduced or greatly reduced in each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range compared to each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range.

According to the exemplary aspect of the invention, a device is also disclosed which comprises means for at least partially realizing the method according to the exemplary aspect of the invention. The means of the first device can be implemented in hardware and / or software. For example, they can include at least one processor for executing computer program code to implement the required functions, at least one memory for storing the program code, or both. Alternatively, for example, they could include circuits designed to perform the required functions, e.g. in a chipset or a chip, like an integrated circuit. In general, the means can comprise, for example, one or more processing means such as a processor and a memory. Optionally, the first device may include various other components, such as a radio interface, a data interface, a user interface, etc.

For example, the device comprises at least one processor and at least one memory that contains computer program code, wherein the at least one memory and the computer program code are configured to at least partially induce a device with the at least one processor to implement the method and / or the steps of Perform method according to the exemplary aspect of the invention.

According to an exemplary embodiment of the exemplary aspect of the invention, determining the representative for a measure of interference in a frequency range of a DSL signal comprises determining a relationship between the at least one first representative and the at least one second representative.

According to an exemplary embodiment of the exemplary aspect of the invention, the frequency range represents a downstream frequency range.

1. (i) einen Wert, der ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in dem mindestens einen Frequenzunterbereich des ersten Typs des Frequenzbereichs darstellt;
2. (ii) jeweils einen Wert für jeden Frequenzunterbereich des mindestens einen Frequenzunterbereichs des ersten Typs des Frequenzbereichs, der ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in dem jeweiligen Frequenzunterbereich des ersten Typs darstellt.

According to an exemplary embodiment of the exemplary aspect of the invention, the at least one first representative comprises one of the following:

1. (i) a value that represents a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range;
2. (ii) a value for each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range, which represents a measure for a transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type.

According to an exemplary embodiment of the exemplary aspect of the invention, the value, which represents a measure for a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range, represents a signal-to-noise Ratio or a signal-to-interference ratio; or the respective value of a frequency sub-range of the at least one frequency sub-range of the first type of the frequency range, which represents a measure for a transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type, represents a signal-to-noise ratio or a signal-to-signal ratio -Interference ratio.

1. (i) einen Wert, der ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in dem mindestens einen Frequenzunterbereich des zweiten Typs des Frequenzbereichs darstellt;
2. (ii) jeweils einen Wert für jeden Frequenzunterbereich des mindestens einen Frequenzunterbereichs des zweiten Typs des Frequenzbereichs, der ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in dem jeweiligen Frequenzunterbereich des zweiten Typs darstellt.

According to an exemplary embodiment of the exemplary aspect of the invention, the at least one second representative comprises one of the following:

1. (i) a value which represents a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the second type of the frequency range;
2. (ii) a value for each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range, which represents a measure for a transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type.

According to an exemplary embodiment of the exemplary aspect of the invention, the value, which represents a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the second type of the frequency range, represents a signal-to-noise ratio or a signal -to interference ratio; or the respective value of a frequency sub-range of the at least one frequency sub-range of the second type of the frequency range, which represents a measure of a transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type, represents a signal-to-noise ratio or a signal to interference ratio.

According to an exemplary embodiment of the exemplary aspect of the invention, the representative for a measure of a disturbance in a frequency range of the DSL signal comprises a power value.

According to an exemplary embodiment of the exemplary aspect of the invention, at least one frequency sub-range of the at least one frequency sub-range of the first type in each case represents a frequency sub-range in which the transmission power of a PLC modem is reduced or is equal to zero, in particular by using at least one notch filter in the PLC Modem or by masking out at least one carrier of a multi-carrier signal of the PLC modem, the at least one carrier being in the respective frequency sub-range, and / or wherein at least one frequency sub-range of the at least one frequency sub-range of the first type each represents a frequency sub-range which is not in the PLC Frequency spectrum of the PLC transmission system used by the PLC modem is.

For example, the reduced transmission power of the PLC modem in a frequency subrange of the first type represents a significantly reduced transmission power of the PLC modem in a frequency subrange of the first type, the transmission power of the PLC modem in a frequency subrange of the first type then compared to a transmission power of the PLC modem in a frequency subrange of the second type is reduced by at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB, or at least 60dB.For example, the reduced transmission power of the PLC modem in a frequency subrange of the first type means that the transmission power of the PLC modem in a frequency subrange of the first type compared to a transmission power of the PLC modem in a frequency subrange of the second type is reduced by at least 10dB, or at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB. For example, the transmission power of the PLC modem can be reduced or greatly reduced in each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range compared to each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range.

• (i) Ermitteln des mindestens einen ersten Repräsentanten, welcher ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in mindestens einem Frequenzunterbereich des ersten Typs des Frequenzbereichs darstellt, basierend auf einem Satz erster Daten, welche basierend auf einer Messung in dem mindestens einem Frequenzunterbereich des ersten Typs des DSL-Signals ermittelt wurden, und
• (i) Ermitteln des mindestens einen zweiten Repräsentanten, welcher ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in mindestens einem Frequenzunterbereich des zweiten Typs des Frequenzbereichs darstellt, basierend auf einem Satz zweiter Daten, welche basierend auf einer Messung in dem mindestens einem Frequenzunterbereich des zweiten Typs des DSL-Signals ermittelt wurden.

According to an exemplary embodiment of the exemplary aspect of the invention, the following is included:

• (i) determining the at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, based on a set of first data, which is based on a measurement in the at least one frequency sub-range of the first type of DSL signal were determined, and
• (i) determining the at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range, based on a set of second data, which is based on a measurement in the at least one frequency sub-range of the second type of DSL signal.

• (i) jedem Frequenzunterbereich des mindestens einen Frequenzunterbereich des ersten Typs; oder
• (i) dem mindestens einen Frequenzunterbereich des ersten Typs ist;

und
der Satz zweiter Daten ist repräsentativ für ein Signal-zu-Rausch-Verhältnis oder ein Signal-zu-Interferenz-Verhältnis desjenigen Teils des DSL-Signals in:

1. (i) jedem Frequenzunterbereich des mindestens einen Frequenzunterbereich des zweiten Typs; oder
2. (ii) dem mindestens einen Frequenzunterbereich des zweiten Typs ist.

According to an exemplary embodiment of the exemplary aspect of the invention, the set of first data is representative of a signal-to-noise ratio or a signal-to-interference ratio of that part of the DSL signal in:

• (i) each frequency sub-range of the at least one frequency sub-range of the first type; or
• (i) the at least one frequency subrange is of the first type;

and
the set of second data is representative of a signal-to-noise ratio or a signal-to-interference ratio of that part of the DSL signal in:

1. (i) each frequency sub-range of the at least one frequency sub-range of the second type; or
2. (ii) the at least one frequency sub-range of the second type.

According to an exemplary embodiment of the exemplary aspect of the invention, the exemplary embodiment comprises causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal, in particular the change in the transmission power of at least a PLC modem in at least one frequency sub-range of the at least one frequency sub-range of the second type of the frequency range.

According to an exemplary embodiment of the exemplary aspect of the invention, causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal comprises causing a reduction in the transmission power of at least one PLC Modem if the measure of interference indicated by the representative in the frequency range of the DSL signal is above a predefined first threshold, and / or comprises causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of one Disturbance in the frequency range of the DSL signal causing an increase in the transmission power of at least one PLC modem if the measure of a disturbance in the frequency range of the DSL signal indicated by the representative is below a predefined second threshold.

According to an exemplary embodiment of the exemplary aspect of the invention, causing a change in the transmission power of at least one PLC modem comprises sending a command to at least one PLC modem of the at least one PLC modem.

1. (i) Durchführen der Messung in dem mindestens einem Frequenzunterbereich des ersten Typs des DSL-Signals und Ermitteln des Satzes erster Daten; und
2. (ii) Durchführen der Messung in dem mindestens einem Frequenzunterbereich des zweiten Typs des DSL-Signals und Ermitteln des Satzes zweiter Daten.

According to an exemplary embodiment of the exemplary aspect of the invention, the following is included:

1. (i) performing the measurement in the at least one frequency sub-range of the first type of DSL signal and determining the set of first data; and
2. (ii) performing the measurement in the at least one frequency sub-range of the second type of DSL signal and determining the set of second data.

1. (i) Empfangen des Satzes erster Daten, und
2. (ii) Empfangen des Satzes zweiter Daten.

According to an exemplary embodiment of the exemplary aspect of the invention, the following is included:

1. (i) receiving the set of first data, and
2. (ii) receiving the set of second data.

According to an exemplary further embodiment of the exemplary aspect of the invention, which can apply to all of the aforementioned embodiments of the exemplary aspect of the invention, the DSL signal is replaced by a signal from a second communication network, the second communication network being not limited to DSL and a wired one or can be a wireless communication network.

For example, a PLC communication network of the at least one PLC modem and the second communication network are set up in such a way that no direct data transmission between the second communication network and the PLC communication network is possible, in particular because a standard of the second communication system is not compatible with a PLC standard is.

According to an exemplary aspect of the exemplary further embodiment, the method can therefore include determining a representative for a measure of interference in a frequency range of a signal of the second communication network, based at least on (i) at least one first representative, which is a measure of a transmission quality of a part represents the signal of the second communication network in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the signal of the second communication network in at least one frequency sub-range of a second type of the frequency range; in which each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range in which a PLC modem transmits or at least predominantly transmits.

The aforementioned embodiments and exemplary embodiments can apply equally to the exemplary further embodiment of the exemplary aspect of the invention.

The invention is explained in more detail below with reference to drawings showing exemplary embodiments.

• 1a eine exemplarische Vorrichtung gemäß einer ersten Ausführungsform der Erfindung;
• 1b ein exemplarisches Verfahren gemäß einer ersten Ausführungsform der Erfindung;
• 1c eine exemplarische Vorrichtung gemäß einer weiteren Ausführungsform der Erfindung;
• 2a ein exemplarisches System gemäß einer Ausführungsform der Erfindung;
• 2b ein exemplarisches System gemäß einer weiteren Ausführungsform der Erfindung;
• 3a ein exemplarisches Diagramm eines exemplarischen SNR-Verlaufs eines (DSL)-Signals in einem Frequenzbereich;
• 3b ein exemplarisches Diagramm eines weiteren exemplarischen SNR-Verlaufs eines (DSL)-Signals in einem Frequenzbereich;
• 4 ein exemplarisches Verfahren gemäß einer weiteren Ausführungsform der Erfindung;
• 5a ein exemplarisches Verfahren gemäß einer weiteren Ausführungsform der Erfindung;
• 5b ein exemplarisches Verfahren gemäß einer weiteren Ausführungsform der Erfindung;
• 6a ein exemplarisches Verfahren gemäß einer weiteren Ausführungsform der Erfindung;
• 6b ein exemplarisches Verfahren gemäß einer weiteren Ausführungsform der Erfindung;
• 7a ein exemplarisches Diagramm eines weiteren exemplarischen SNR-Verlaufs eines (DSL)-Signals in mehreren Frequenzbereichen;
• 7b ein exemplarisches Diagramm des weiteren exemplarischen SNR-Verlaufs eines (DSL)-Signals in mehreren Frequenzbereichen und eine exemplarische Darstellung einer beispielhaften Ausgestaltung der ersten und zweiten erfindungsgemäßen Repräsentanten der Erfindung; und
• 8 eine exemplarisches Darstellung einer beispielhaften erfindungsgemäßen Veranlassung der Anpassung der Sendeleistung mindestens einen PLC-Modems.

The figures show:

• 1a an exemplary device according to a first embodiment of the invention;
• 1b an exemplary method according to a first embodiment of the invention;
• 1c an exemplary device according to a further embodiment of the invention;
• 2a an exemplary system according to an embodiment of the invention;
• 2 B an exemplary system according to another embodiment of the invention;
• 3a an exemplary diagram of an exemplary SNR curve of a (DSL) signal in a frequency range;
• 3b an exemplary diagram of another exemplary SNR curve of a (DSL) signal in a frequency range;
• 4 an exemplary method according to a further embodiment of the invention;
• 5a an exemplary method according to a further embodiment of the invention;
• 5b an exemplary method according to a further embodiment of the invention;
• 6a an exemplary method according to a further embodiment of the invention;
• 6b an exemplary method according to a further embodiment of the invention;
• 7a an exemplary diagram of another exemplary SNR curve of a (DSL) signal in several frequency ranges;
• 7b an exemplary diagram of the further exemplary SNR curve of a (DSL) signal in several frequency ranges and an exemplary representation of an exemplary embodiment of the first and second representatives of the invention according to the invention; and
• 8th an exemplary representation of an exemplary prompting the adaptation of the transmission power of at least one PLC modem.

The following description is provided to deepen the understanding of the present invention and is to be understood to supplement and to read the description of the exemplary embodiments of the invention as contained in the preceding section of this description.

1a 10 is a schematic block diagram of an exemplary embodiment of an apparatus 100 according to the invention. The device 100 includes a processor 101 and, with the processor 101 connected, a memory 102 , The memory 102 stores the computer program code to determine a representative of a measure of interference in a frequency range of a DSL signal based at least on (i) at least one first representative, which is a measure of a transmission quality of part of the DSL signal in at least one frequency sub-range of a first type of Represents frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents in which a PLC modem transmits or at least predominantly transmits. The processor 101 is configured to the in memory 102 execute stored computer program code to cause a device to perform the desired actions. The memory 102 is thus an exemplary embodiment of a non-volatile, computer-readable storage medium in which computer program code according to the invention is stored.

For example, the reduced transmission power of the PLC modem in a frequency sub-range of the first type means that the transmission power of the PLC modem in a frequency sub-range of the first type compared to a transmission power of the PLC modem in a frequency sub-range of the second type is reduced by at least 10dB, or at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB. For example, the reduced transmission power of the PLC modem in a frequency sub-range of the first type can represent a significantly reduced transmission power of the PLC modem in a frequency sub-range of the first type, the transmission power of the PLC modem in a frequency sub-range of the first type then compared to a transmission power of the PLC modems in a frequency subrange of the second type is reduced by at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB, or at least 60dB. For example, the transmission power of the PLC modem can be reduced or greatly reduced in each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range compared to each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range.

The DSL signal can be, for example, the DSL signal of a digital subscriber system (for example an xDSL system), which is used for the broadband connection of a DSL modem, such as that in 2a and 2 B DSL modem shown is used (for example, to connect to a WAN). For example, the DSL system can use an ADSL technology (Asymmetric Digital Subscriber Line), which is defined, for example, by ITU-T recommendation G.992.1, or can also use SDSL technology (Symmetric Digital SubscriberLine), or use a VDSL technology (Very High Speed Digital Subscriber Line), which is defined for example by ITU-T recommendations G.993.1 and G.993.2, also use other DSL technologies and in particular also all future DSL technologies, such as the future G.fast Technology (Fast Access to Subscriber Terminals), which can be defined, for example, in ITU-T recommendations G.9700 and G.9701.

The PLC modem can be operated in accordance with a PLC standard, for example in accordance with (or based on) a HomePlug standard (for example IEEE 1901 or IEEE P1901), or for example in accordance with (or based on) a HomeGrid standard (for example G.hn), or, for example, according to (or based on) a SmartMeter standard, the PLC standard being able, for example, to enable MIMO transmission over several lines of the power supply line. Any other or future PLC standard can also be used for the PLC modem. This can therefore be operated according to (or based on) a PLC standard and, for example, form a PLC communication network according to (or based on) the PLC standard, e.g. with another PLC modem.

2a 10 is a schematic block diagram of another exemplary embodiment of an apparatus 150 according to the invention. The device 150 includes means 130 for determining a representative of a measure of interference in a frequency range of a DSL signal based at least on (i) at least one first representative, which represents a measure of the transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents in which a PLC modem transmits or at least predominantly transmits. This means 130 The processor can, for example, determine a representative of a measure of interference in a frequency range of a DSL signal 101 with the store 102 the device 100 represent, but can also represent other means, such as a chip or other predominantly hard-wired hardware component, which, for example, in particular does not use any program code stored as software to determine a representative of a measure of a fault.

The device 100 or 150 can, for example, a PLC modem 210 . 220 be, or a DSL modem 230 , or a separate control device, such as the one in 2 B shown control device 280 ,

The device 100 or 150 could be a component (eg circuit), such as a chip, a circuit (eg circuit) on a chip or a plug-in card, for any mobile or stationary device. Optionally, the device 100 or 150 Various other components include, such as a data interface configured to enable data exchange with separate devices, a user interface such as a touchscreen, an additional memory, an additional processor, etc. For example, the device 100 or 150 a component of a PLC modem 210 . 220 , a DSL modem 230 be, or be a component of a separate control device, such as that in 2 B shown control device 280 ,

Operation of a device (such as device 100 or 150 ) will now be referenced to the flowchart of 1b described, which is an exemplary embodiment of a method 100 ' according to the present invention. The operation is an exemplary embodiment of a method according to the invention. At least one processor 101 (can be a processor 101 or a variety of processors 101 and) in at least one store 102 stored program code (can be a memory 102 or a variety of memories 102 cause a device (e.g. device 100 or 150 ' ) to execute the method 100 'when the program code from the memory 102 retrieved and from the processor 101 is performed. For example, the device that is caused to perform the operation may be the device 100 . 150 ' or another device - the following is an example and is not restricted to the device 100 or 150 ' switched off.

The device 100 . 150 ' determines a representative for a measure of interference in a frequency range of a DSL signal based at least on (i) at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents, in which a PLC modem transmits or at least predominantly transmits (step 110 ).

2a shows an example of an embodiment of a system 200 which has at least one PLC modem 210 . 220 (PLC: Power Line Communication), each of the at least one PLC modem 210 . 220 to a power supply line 260 is connected for data transmission in accordance with a PLC standard. Each of the at least one PLC modem 210 . 220 therefore includes PLC communication means that are set up for PLC data transmission. This PLC data transmission can, for example, be a data communication which comprises the transmission of user data and / or also (only) the transmission of a test carrier. Data communication via the power supply line 260 can be done bidirectionally, for example, ie the PLC communication means can receive signals with receiving means. Furthermore, the PLC communication means can comprise, for example, transmission means for transmitting signals in at least one PLC frequency band.

The PLC data transmission can be based on a frequency division multiplex method, such as an OFDM method, with a plurality of signals in a plurality of different PLC frequency bands being transmitted as a powerline signal. For example, exactly one signal can be assigned to a PLC frequency band, each signal having a specific bandwidth in the frequency range and being assigned to a carrier frequency, for example. If, for example, OFDM modulation is used, the receiving means can comprise Fourier transforming means in order to extract the signals modulated on the individual carriers from the received total signal. PLC can also use MIMO transmissions.

That at least one PLC modem 210 . 220 can be operated according to a (or based on) PLC standard, such as according to (or based on) a HomePlug standard (e.g. according to IEEE 1901 or IEEE P1901), or for example according to (or based on) a HomeGrid standard (eg G.hn), or for example according to (or based) on a SmartMeter standard, the PLC standard for example using MIMO transmission several lines of the power supply line 260 can enable. Any other or future PLC standard for the at least one PLC modem can also be used 210 . 220 be used. The at least one PLC modem 210 . 220 can therefore be operated according to (or based) on a PLC standard and, for example, form a PLC communication network according to (or based on) the PLC standard, the PLC communication means being set up according to (or based on the ) Send and / or receive PLC standard.

As in 2a As an example, this can be at least one PLC modem 210 . 220 a variety of PLC modems 210 . 220 represent which a PLC communication network for PLC data transmission over the power supply line 260 between PLC modems 210 . 220 the majority of PLC modems 210 . 200 can train. A communication network can already be formed when a first component with a communicates with the second component, such as a first PLC modem 210 with a second PLC modem 220 or the DSL modem 230 with a DSLAM (not in 2a and 2 B ) Shown.

The power supply line 260 and at least one PLC modem 210 . 220 can for example be arranged in a house or in an apartment.

The system also includes 200 a DSL modem 230 (DSL: Digital Subscriber Line). The DSL modem 230 for example has an interface 231 on which the DSL modem 230 to a line 240 for connecting the DSL modem 230 can be connected to a WAN (Wide Area Network), such as the Internet. The DSL modem 230 can, for example, via the line 240 be connected to a DSLAM (Digital Subscriber Line Access Multiplexer), the line 240 for example, a two-wire line, such as a copper twin wire (eg telephone line). The DSL modem 230 is set up via the interface 231 one over the line 240 receive transmitted DSL signal, such as one from the DSLAM to the DSL modem 230 over the line 240 sent DSL signal, which is a downstream DSL signal.

The DSL signal can be, for example, the DSL signal of a digital subscriber system (for example an xDSL system), which is used for the broadband connection of a DSL modem, such as that in 2a and 2 B DSL modem shown is used (for example, to connect to a WAN). For example, the DSL system can use an ADSL technology (Asymmetric Digital Subscriber Line), which is defined, for example, by ITU-T recommendation G.992.1, or can also use SDSL technology (Symmetric Digital SubscriberLine), or use a VDSL technology (Very High Speed Digital Subscriber Line), which is defined for example by ITU-T recommendations G.993.1 and G.993.2, also use other DSL technologies and in particular also all future DSL technologies, such as the future G.fast Technology (Fast Access to Subscriber Terminals), which can be defined, for example, in ITU-T recommendations G.9700 and G.9701. For example, the communication between the DSL modem 230 and the DSLAM can be regarded as communication via a DSL communication network. The DSL system can therefore be viewed as a DSL communication network.

For example, the PLC communication network and the DSL communication network are set up in such a way that direct data transmission between the DSL communication network and the PLC communication network is not possible, in particular because a DSL standard, which is provided by the DSL modem 230 over the interface 231 for DSL communication, for example with a DSLAM, is not compatible with a PLC standard which of the at least one PLC modem 210 . 220 is used for PLC communication in the PLC communication network.

For example, communication between the DSL modem 230 and at least one PLC modem 210 . 220 of the at least one PLC modem 210 . 220 via at least one gateway. For example, the DSL modem 230 another interface 232 which have a connection 250 with an interface 211 of a PLC modem 210 of the at least one PLC modem 210 . 220 connected is. For example, the further interface 232 and the interface 211 of the PLC modem 210 each represent wired data transmission interface, such as an Ethernet interface, and the connection 250 for example, a cable such as an Ethernet cable, or the other interface 232 and the interface 211 of the PLC modem 210 can each represent wireless data transmission interface, such as a WLAN interface, and the connection 250 can represent, for example, a wireless (eg radio) connection. Thus, the DSL modem 230 and the PLC modem 210 about the connection 250 Exchange data, eg bidirectional. For example, the connection 250 a connection of the PLC communication system to the Internet via the DSL modem 230 respectively. Furthermore, the PLC modem 210 to be set up a connection between the DSL modem 230 and one or more other PLC modems 220 of the at least one PLC modem 210 . 220 manufacture.

In the system 200 it can occur, for example, due to electrical crosstalk of the power line signals of the PLC communication system from the power supply line 260 on the line 240 and / or in the DSL device 230 , especially if the DSL device is connected to the power supply line 260 is connected, which can lead to impairment of the DSL signal, especially that in the downstream of the DSL modem 230 received DSL signal.

In this embodiment, the device 100 or 150 for example part of the DSL modem 230 be or be part of a PLC modem of the at least one PLC modem, or can be integrated in each PLC modem of the at least one PLC modem.

2 B shows an example of an embodiment of a system 200 ' which is on the system 200 the 2a based, in particular the comments on components of the system 200 equally for the components of FIG 2 B be valid. The system 200 ' is different from the system 200 in a control device 280 which via a first connection 281 with a PLC modem (or any PLC modem) of the at least one PLC modem 210 and which is connected via a second connection 281 with the DSL modem 230 and which is a separate control device 280 to the DSL modem 230 and at least one PLC modem 210 . 220 represents.

The first connection 281 can, for example, a wired connection 281 be, such as via cables such as an Ethernet cable, or a wireless connection 281 such as a WiFi connection, Bluetooth connection or other wireless connection. The first connection 281 can for example the interface 211 of the PLC modem 210 use. The second connection 282 can, for example, a wired connection 282 be, such as via cables such as an Ethernet cable, or a wireless connection 282 such as a WiFi connection, Bluetooth connection or other wireless connection. The first connection 282 can, for example, the interface 231 of the DSL modem 230 use.

In this embodiment, the device 100 or 150 for example part of the control device 280 his.

3a shows an example of such a disturbance of a DSL signal, which is transmitted in a frequency range between f ₁ and f ₄ (in the following a frequency (sub) range, which lies between two frequencies f _a and f _b , as frequency (sub range) [ f _a , f _b ]), and which is, for example, a downstream DSL signal on the DSL device 230 Will be received. In the in 3a shown diagram 300 the signal-to-noise ratio (SNR) of the DSL signal versus the frequency on the x-axis is exemplary on the y-axis using an SNR curve 310 plotted, this signal-to-noise ratio, for example, by the DSL device 230 can be measured, especially if the DSL signal is a downstream DSL signal.

In the diagram 300 it can be seen that the SNR curve 310 of the DSL signal in a frequency sub-range which lies between f ₂ and f ₃ and which represents a frequency sub-range of the frequency range [f ₁ , f ₄ ], clearly drops. In this example, this interference of the DSL signal stems from the frequency sub-range [f ₂ , f ₃ ] 311 and thus in the frequency range [f ₁ , f ₄ ] therefore that (eg at least) one PLC modem 210 . 220 of the at least one PLC modem in the frequency subrange 311 sends a PLC signal (or at least predominantly sends, ie at least partially in the frequency sub-range 311 sends) and this PLC signal in the frequency sub-range 311 of the frequency range [f ₁ , f ₄ ] interferes with the DSL signal.

3b shows an example of such a disturbance of a DSL signal, which is transmitted in a frequency range between f _2.1 and f _2.5 , and which is, for example, a downstream DSL signal that is on the DSL device 230 Will be received. In the in 3b shown diagram 300 ' the signal-to-noise ratio (SNR) of the DSL signal versus the frequency on the x-axis is exemplary on the y-axis using an SNR curve 320 plotted, this signal-to-noise ratio, for example, by the DSL device 230 can be measured, especially if the DSL signal is a downstream DSL signal.

In the diagram 300 ' it can be seen that the SNR curve 320 of the DSL signal in a frequency sub-range which lies between f _2.2 and f _2.3 and which represents a frequency sub-range of the frequency range [f _2.1 , f _2.5 ] and in a frequency sub-range which lies between f _{2, 4} and f _2.5 , and which represents a frequency sub-range of the frequency range [f _2.1 , f _2.5 ], each clearly drops. In this example, this interference of the DSL signal stems from the frequency sub-range [f _2.2 , f _2.3 ] 322 and in the frequency sub-range [f _2.4 , f _2.5 ] 324 in that (e.g. at least) one PLC modem 210 . 220 of the at least one PLC modem in the frequency subranges 322 and 324 sends a PLC signal (or at least predominantly sends, ie at least partially in the frequency sub-range 322 and partly in the frequency sub-range 324 sends) and this PLC signal in the frequency sub-ranges 322 . 324 of the frequency range [f _2.1 , f _2.5 ] interferes with the DSL signal.

The device 100 . 150 ' determines a representative of a measure of interference in the frequency range of the DSL signal based at least on (i) at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; wherein each frequency subrange of the at least one frequency subrange of the first type is one Represents frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with respect to a frequency sub-range of the second type with reduced power, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range in which a PLC modem transmits or at least predominantly sends (step 110 ).

In the example of the 3a the frequency range of the DSL signal is, for example, the frequency range [f ₁ , f4], and a representative for a measure of a disturbance in the frequency range [f ₁ , f ₄ ] of the DSL signal is determined, for example. In the example of the 3b the frequency range of the DSL signal is, for example, the frequency range [f _2.1 , f _2.5 ], and it is used, for example, to represent a measure of a disturbance in the frequency range [f _2.1 , f _2.5 ] of the DSL Signal determined.

This determination is based on at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, each frequency sub-range of the at least one frequency sub-range of the first type representing a frequency sub-range of the frequency range in which a PLC modem 210 . 220 not (for example every PLC modem 210 . 220 of the at least one PLC modem 210 . 220 ) or against a frequency sub-range of the second type with reduced power. Here, for example, use is made of the fact that in the at least one frequency sub-range of the first type of the frequency range there is no interference or only a slight interference in the DSL signal by a PLC modem 210 . 220 can be expected because in each frequency sub-range of the first type there is at least one PLC modem 210 . 220 does not transmit or only transmits with reduced power. For example, the reduced transmission power of the PLC modem in a frequency subrange of the first type compared to a transmission power of the PLC modem in a frequency subrange of the second type means that the transmission power of the PLC modem in a frequency subrange of the first type compared to a transmission power of the PLC modem in a frequency sub-range of the second type is reduced by at least 10dB, or at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB. For example, the reduced transmission power of the PLC modem in a frequency sub-range of the first type can represent a significantly reduced transmission power of the PLC modem in a frequency sub-range of the first type, the transmission power of the PLC modem in a frequency sub-range of the first type then compared to a transmission power of the PLC modems in a frequency subrange of the second type is reduced by at least 15dB, or at least 20dB, or at least 30dB, or at least 40dB, or at least 50dB, or at least 60dB. For example, the transmission power of the PLC modem can be reduced or greatly reduced in each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range compared to each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range.

In the example of the 3a For example, a first frequency sub-range of the first type can be the frequency sub-range [f ₁ , f ₂ ] 312 and a second frequency sub-range of the first type, the frequency sub-range [f ₃ , f ₄ ] 313 or, as another alternative, the first frequency sub-range of the first type can be the frequency sub-range [f ₁ ', f ₂ ] 312 ' instead of 312 be and the second frequency sub-range of the first type is the frequency sub-range [f ₃ , f ₄ ] 313 in order not to take into account, for example, the line-related bad SNR profile of the DSL signal in the frequency sub-range [f ₁ , f ₁ '] with regard to the first representative. The first representative can also be, for example, a measure of the transmission quality of part of the DSL signal in only a single frequency sub-range of the first type, such as, for example, only in the frequency sub-range [f ₁ ', f ₂ ]. 312 ' or only in the frequency sub-range [f ₃ , f ₄ ] 313 ,

In the example of the 3b For example, a first frequency sub-range of the first type can be the frequency sub-range [f _2.1 , f _2.2 ] 321 and a second frequency sub-range of the first type, the frequency sub-range [f _2,3 , f _2,4 ] 323 his. The first representative can also be, for example, a measure of the transmission quality of part of the DSL signal in only a single frequency sub-range of the first type, such as, for example, only in the frequency sub-range [f _2.1 , f _2.2 ]. 321 or only in the frequency sub-range [f _2,3 , f _2,4 ] 323 ,

For example, each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range in which the transmission power of a PLC modem of the at least one PLC modem 210 . 220 is reduced or is equal to zero, in particular by using at least one notch filter in the respective PLC modem 210 . 220 and / or by hiding at least one carrier of a multi-carrier PLC signal of the respective PLC modem 210 . 220 , wherein the at least one carrier lies in the respective frequency sub-range of the first type, and / or wherein at least one frequency sub-range of the at least one frequency sub-range of the first type each represents a frequency sub-range that is not in the PLC frequency spectrum of the respective PLC modem 210 . 220 PLC transmission system used. The use of notch filters and / or the masking out of at least one carrier of a multi-carrier PLC signal in a PLC modem 210 . 220 can be used, for example, to amateur radio frequency bands or radio frequency bands or frequency bands for aviation services due to faults in the PLC modem 210 . 220 to protect or reduce such interference. The use of notch filters with a PLC modem 210 . 220 can be understood to mean that the transmission power in the corresponding one or more frequency bands in which the notch filter or filters are used, the transmission power of the PLC modem is almost zero and can therefore be regarded as zero.

The following explanations regarding the at least one first representative and the at least one second representative, which are examples of the 3a and 3b related, such as, for example, with respect to the at least one first representative R1 and the at least one second representative R2 (and the explanations about R1 and R2, which can be regarded as explanations for determining R1 and R2), can likewise be used for determining the at least one first representative in step 410 of the procedure 400 and / or equally for the determination of the at least one second representative in step 420 of the procedure 400 be valid.

In an exemplary embodiment, the at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, and can be referred to as R1, each comprise a value for each frequency sub-range of the at least one a frequency sub-range of the first type of the frequency range, which represents a measure of a transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type. In the in 3a The example shown includes, for example, the at least one frequency sub-range of the first type, for example the first frequency sub-range [f ₁ ', f ₂ ] 312 ' and the second frequency sub-range [f ₃ , f ₄ ] 313 , Thus, the at least one first representative can comprise a first value, which is a measure of a transmission quality of part of the DSL signal in the first frequency sub-range [f ₁ ', f ₂ ] 312 represent, and comprise a second value, which is a measure for a transmission quality of a part of the DSL signal in the second frequency sub-range [f ₃ , f ₄ ] 313 represents. In the in 3b Example shown, the at least one frequency sub-range of the first type includes, for example, the first frequency sub-range [f _2.1 , f _2.2 ] 321 and the second frequency sub-range [f _2,3 , f _2,4 ] 323 , The at least one first representative can thus comprise a first value, which is a measure of a transmission quality of part of the DSL signal in the first frequency sub-range [f _2.1 , f _2.2 ] 321 and comprise a second value, which is a measure of a transmission quality of a part of the DSL signal in the second frequency sub-range [f _2,3 , f _2,4 ] 323 represents.

For example, if the at least one frequency subrange of the first type comprises i frequency subranges, where i is an integer and i> 0 (including i = 1), then the first representative can have a number of i values R1 _j with j∈ {1, .. .i}, where R1 _{j represents} the measure for a transmission quality of a part of the DSL in the j-th frequency sub-range of the at least one frequency sub-range of the first type. If i> 1, then the at least one first representative can be, for example, a type of vector R1 = [R1 ₁ , ... R1 _i ], which comprises i values R1 _j with j∈ {1, ... i}.

For example, the respective value of the at least one first representative, which is assigned to a respective frequency sub-range of the at least one frequency sub-range of the first type, which represents a measure of a transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type, can be a signal -Noise ratio or a signal-to-interference ratio.

Regarding the in 3a In the example shown, the first value R1 _{1 of} the at least one first representative could represent an SNR value R1 ₁ = SNR1 ₁ , which, for example, is an averaged SNR value for the SNR curve 310 the 3a in the first frequency sub-range [f ₁ ', f ₂ ] 312 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging. Analogously, with regard to the in 3a illustrated example, the second value R1 _{2 of} the at least one first representative represents an SNR value R1 ₂ = SNR1 ₂ , which is, for example, an averaged SNR value for the SNR curve 310 the 3a in the second Frequency sub-range [f ₃ , f ₄ ] 313 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging.

Assuming that the curve 310 in 3a shows an SIR curve, the first value R1 _{1 of} the at least one first representative could represent an SIR value R1 ₁ = SIR1 ₁ , which for example is an averaged SIR value for the SNR curve 310 the 3a in the first frequency sub-range [f ₁ ', f ₂ ] 312 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging. Analogously, with regard to the in 3a illustrated example, the second value R1 _{2 of} the at least one first representative represents an SIR value R1 ₂ = S1R1 ₂ , which is, for example, an average SIR value for the SIR curve of the curve 310 the 3a in the second frequency sub-range [f ₃ , f ₄ ] 313 , whereby this averaging can be, for example, an arithmetic averaging or another averaging.

These explanations apply analogously to, for example 3b ,

In another exemplary embodiment, the at least one first representative, which is referred to, for example, as R1, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, can represent a value which is a measure for represents a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range.

In the in 3a Example shown, the at least one frequency sub-range of the first type includes, for example, the first frequency sub-range [f ₁ ', f ₂ ] 312 ' and the second frequency sub-range [f ₃ , f ₄ ] 313 , The at least one first representative R1 can thus comprise a value which is a measure of a transmission quality of a part of the DSL signal in the first frequency sub-range [f ₁ ', f ₂ ] 312 and in the second frequency sub-range [f ₃ , f ₄ ] 313 (ie equally for all frequency sub-ranges of the at least one frequency sub-range of the first type together). For example, this value R1 can represent an averaging of the transmission quality over each frequency subband of the at least one frequency subband of the first type. In the in 3b Example shown, the at least one frequency sub-range of the first type includes, for example, the first frequency sub-range [f _2.1 , f _2.2 ] 321 and the second frequency sub-range [f _2,3 , f _2,4 ] 323 , Thus, the at least one first representative R1 can comprise a value which is a measure of a transmission quality of a part of the DSL signal in the first frequency sub-range [f _2.1 , f _2.2 ] 321 and in the second frequency sub-range [f _2,3 , f _2.4 ] 323 (ie for all frequency sub-ranges of the at least one frequency sub-range of the first type together). For example, this value R1 can represent an averaging of the transmission quality over each frequency subband of the at least one frequency subband of the first type.

For example, the value of the at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range, can be a signal-to-noise ratio, ie R1 = SNR1, wherein the SNR value SNR1 represents, for example, an averaged SNR value over each of the at least one frequency subrange of the first type. Regarding the in 3a The example shown could therefore be R1 the mean SNR value for the SNR curve 310 over the first frequency sub-range [f ₁ ', f ₂ ] 312 and the second frequency sub-range [f ₃ , f ₄ ] 313 be, whereby this averaging can be, for example, an arithmetic averaging or another averaging.

For example, the value of the at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range, can be a signal-to-interference ratio, ie R1 = SIR1, wherein the SIR value SIR1 represents, for example, an average SIR value over each of the at least one frequency subrange of the first type. Regarding the in 3a illustrated example, and on the assumption that the curve 310 represents the SIR curve, R1 could therefore be the averaged SIR value for the SIR curve of the curve 310 over the first frequency sub-range [f ₁ ', f ₂ ] 312 and the second frequency sub-range [f ₃ , f ₄ ] 313 be, whereby this averaging can be, for example, an arithmetic averaging or another averaging.

These explanations apply analogously to, for example 3b ,

In an exemplary embodiment, the at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range and can be referred to as R2, can each include a value for each frequency sub-range of the at least one Frequency sub-range of the second type of the frequency range, which represents a measure of the transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type.

In the in 3a Example shown, the at least one frequency sub-range of the second type includes, for example, the frequency sub-range [f ₂ , f ₃ ] 311 , The at least one second representative can thus comprise a value which is a measure of a transmission quality of part of the DSL in the frequency sub-range [f ₂ , f ₃ ] 311 represents. In the in 3b Example shown, the at least one frequency sub-range of the second type includes, for example, the first frequency sub-range [f _2.2 , f _2.3 ] 322 and the second frequency sub-range [f _2.4 , f _2.5 ] 324 , The at least one second representative can thus comprise a first value, which is a measure of a transmission quality of part of the DSL signal in the first frequency sub-range [f _2.2 , f _2.3 ] 322 and include a second value that is a measure of a transmission quality of a portion of the DSL signal in the second frequency sub-range [f _2.4 , f _2.5 ] 324 represents.

For example, if the at least one frequency subrange of the second type comprises k frequency subranges, where there is no integer and k> 0 (including k = 1), then the second representative can have a number of k values R2 _j with j∈ {1, ... k}, where R2 _{j represents} the measure for a transmission quality of a part of the DSL in the j-th frequency sub-range of the at least one frequency sub-range of the second type. If k> 1, then the first representative can be, for example, a kind of vector R2 = [R2 ₁ , ... R2 _k ], which comprises k values R2 _j with j∈ {1, ... k}.

For example, the respective value of the at least one second representative R2, which is assigned to a respective frequency sub-range of the at least one frequency sub-range of the second type, which represents a measure of a transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type, a signal to noise ratio or a signal-to-interference ratio.

Regarding the in 3a In the example shown, the value R2 _{1 of} the second representative could represent an SNR value R2 ₁ = SNR2 ₁ , which, for example, is an averaged SNR value for the SNR curve 310 the 3a in the frequency sub-range [f ₂ , f ₃ ] 311 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging.

Regarding the in 3b In the example shown, the first value R2 _{1 of} the second representative could represent an SNR value R2 ₁ = SNR2 ₁ , which for example is an averaged SNR value for the SNR curve 320 the 3b in the first frequency sub-range [f _2.2 , f _2.3 ] 322 can represent, whereby this averaging can be an arithmetic averaging but also another averaging. Analogously, with regard to the in 3b illustrated example, the second value R2 _{2 of} the second representative represents an SNR value R2 ₂ = SNR2 ₂ , which is, for example, an averaged SNR value for the SNR curve 320 the 3b in the second frequency sub-range [f _2.4 , f _2.5 ] 324 , whereby this averaging can be, for example, an arithmetic averaging or another averaging.

Assuming that the curve 310 in 3a shows an SIR curve, the first value R2 _{1 of} the second representative could represent an SIR value R2 ₁ = SIR2 ₁ , which for example is an averaged SIR value for the SNR curve 310 the 3a in the frequency sub-range [f ₂ , f ₃ ] 311 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging

Assuming that the curve 320 in 3b shows an SIR curve, the first value R2 _{1 of} the second representative could represent an SIR value R2 ₁ = SIR2 ₁ , which for example is an averaged SIR value for the SNR curve 320 the 3a in the first frequency sub-range [f _2.2 , f _2.3 ] 322 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging. Analogously, with regard to the in 3b In the example shown, the second value R2 _{2 of} the second representative could represent an SIR value R2 ₂ = SIR1 ₂ , which, for example, is an averaged SIR value for the SIR curve 320 the 3a in the second frequency sub-range [f _2.4 , f _2.5 ] 324 represents, whereby this averaging can be, for example, an arithmetic averaging but also another averaging.

In another exemplary embodiment, the second representative, which is referred to, for example, as R2, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range, can represent a value which is a measure of a transmission quality represents a part of the DSL signal in the at least one frequency sub-range of the second type of frequency range.

In the in 3a Example shown, the at least one frequency sub-range of the second type includes, for example, the frequency sub-range [f ₂ , f ₃ ] 311 , The second representative R2 can thus comprise a value which is a measure of a transmission quality of part of the DSL in the frequency sub-range [f ₂ , f ₃ ] 311 and in the second frequency sub-range [f ₃ , f ₄ ] 313 (ie for all frequency sub-ranges of the at least one frequency sub-range of the second type together). For example, this value R1 can be a Represent averaging of the transmission quality over each frequency subband of the at least one frequency subband of the first type.

In the in 3b Example shown, the at least one frequency sub-range of the second type comprises first frequency sub-range [f _2.2 , f _2.3 ] 322 and the second frequency sub-range [f _2.4 , f _2.5 ] 324 , The second representative R2 can thus comprise a value which is a measure of a transmission quality of a part of the DSL in the first frequency sub-range [f _2.2 , f _2.3 ] 322 and in the second frequency sub-range [f _2.4 , f _2.5 ] 324 (ie for all frequency sub-ranges of the at least one frequency sub-range of the second type together). For example, this value R1 can represent an averaging of the transmission quality over each frequency subband of the at least one frequency subband of the first type.

For example, the value of the at least one second representative, which represents a measure for a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the second type of the frequency range, can be a signal-to-noise ratio, ie R1 = SNR1, wherein the SNR value SNR1 represents, for example, an averaged SNR value over each of the at least one frequency subrange of the first type. Regarding the in 3b The example shown could therefore be R2 the mean SNR value for the SNR curve 320 over the first frequency sub-range [f _2.2 , f _2.3 ] 322 and the second frequency sub-range [f _2.4 , f _2.5 ] 324 be, whereby this averaging can be, for example, an arithmetic averaging or another averaging.

For example, the value of the at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range, can be a signal-to-interference ratio, ie R1 = SIR1, wherein the SIR value SIR1 represents, for example, an average SIR value over each of the at least one frequency subrange of the first type. Regarding the in 3b illustrated example, and on the assumption that the curve 320 represents the SIR curve, R1 could therefore be the averaged SIR value for the SIR curve of the curve 310 over the first frequency sub-range [f _2.2 , f _2.3 ] 322 and the second frequency sub-range [f _2.4 , f _2.5 ] 324 be, whereby this averaging can be, for example, an arithmetic averaging or another averaging.

Thus, the device 100 . 150 a representative for a measure of a disturbance in the frequency range of the DSL signal based at least on (i) at least the first representative R1, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) determine at least the second representative R2, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range ( 1b : Step 110 ), because, for example, the at least one first representative as a measure of the transmission quality of the non-disturbed (or only slightly disturbed) part of the DSL signal and the at least one second representative as a measure of the transmission quality of the part disturbed by the PLC communication of the DSL signal can be viewed.

It can be advantageous here that the determination of the representative for a measure of a disturbance in the frequency range of the DSL signal does not require any special test signals (such as test patterns) which are provided by one or more of the at least one PLC modem 210 . 220 are sent, and based on the coupling of such a test signal into the DSL signal, a measure of the interference is calculated, but that any PLC data transmission of a PLC modem 210 . 220 , which can also include normal user data of a user, can be used. The at least one first representative and also the at least one second representative can thus be determined during the ongoing PLC operation of the PLC communication network, and thus also the representative for a measure of a disturbance in the frequency range of the DSL signal in the ongoing PLC operation without The need for special test signals that would reduce the useful data rates are determined.

In an exemplary embodiment, the representative for a measure of a disturbance in a frequency range of the DSL signal comprises a power value, which is specified, for example, in dB. The power value indicates the measure of a disturbance in the frequency range of the DSL signal.

In an exemplary embodiment, determining the representative for a measure of interference in a frequency range of a DSL signal comprises determining a relationship between the at least one first representative and the at least one second representative.

By forming a relationship between the at least one first representative and the at least one second representative, for example, the measure for a transmission quality of the undisturbed (or only slightly disturbed) part of the DSL signal, which is represented by the at least one first representative, and the A measure of a transmission quality of the part of the DSL signal which is disturbed by the PLC communication and which is represented by the at least one second representative, can be related to one another in order to determine the extent of a disturbance in the frequency range of the DSL signal.

If, for example, the at least one first representative comprises several first representatives, such as R1 = [R1 ₁ , ... R1 _i ], which comprises i values R1 _j with _j R1 {1, ... i} (i> 1), then, for example, to determine the ratio, an average value MR1 of the first representative can be formed based on the i values R1 _j with j∈ {1, ... i} (i> 1) of the first representative, such as an arithmetic average or another Mean value, whereby for this purpose a weighting of each Value R1 _j with j∈ {1, ... i}, each with a factor which is correlated with the bandwidth of the frequency sub-range assigned to the respective value R1 _j (for example, is proportional to this), this weighting being carried out, for example, by a Multiplication can take place. The other mean value can represent, for example, a median value, or a minimum value, or a maximum value from the i values R1 _j with j∈ {1, ... i} (i> 1), MR1, for example, in particular a maximum value from the i values R1 _j with j∈ {1, ... i} (i> 1).

If, for example, the at least one second representative comprises several first representatives, such as R2 = [R2 ₁ , ... R2 _k ], which comprises k values R2 _j with j∈ {1, ... k} (k> 1), then, for example, to determine the ratio, an average MR2 of the first representative can be formed based on the k values R2 _j with j∈ {1, ... k} (k> 1) of the first representative, such as an arithmetic average or another Mean value, with a weighting of each value R2 _j with j∈ {1, ... k}, each with a factor that is correlated with the bandwidth of the frequency sub-range assigned to the respective value R2 _k (for example, is proportional to this) , can be made, this weighting can be done for example by multiplication. The other mean value can represent, for example, a median value, or a minimum value, or a maximum value from the k values R2 _j with j∈ {1, ... k}, MR2, for example, in particular a maximum value from k values R2 _j with j∈ {1 , ... k}.

The relationship between the at least one first representative and the at least one second representative can be formed, for example, by dividing the at least one first representative (or the mean MR1) and the at least one second representative (or the mean MR2) or by dividing the at least one second Representatives (or the mean value MR2) and the at least one first representative (or the mean value MR1) are formed.

• - RS = R1/R2;
• - RS = R2/R1;
• - RS = MR1/R2;
• - RS = R2/MR1;
• - RS = R1/MR2;
• - RS = MR2/R1;
• - RS = MR1/MR2;
• - RS = MR2/MR1.

If, for example, the representative for a measure of determining the representative for a measure of a disturbance in a frequency range of a DSL signal is referred to as the value RS, then RS can be determined, for example, in accordance with or based on one of the following regulations:

• - RS = R1 / R2;
• - RS = R2 / R1;
• - RS = MR1 / R2;
• - RS = R2 / MR1;
• - RS = R1 / MR2;
• - RS = MR2 / R1;
• - RS = MR1 / MR2;
• - RS = MR2 / MR1.

Furthermore, the relationship between the at least one first representative and the at least one second representative can be formed, for example, by subtracting the at least one first representative (or the mean MR1) from the at least one second representative (or the mean MR2) or by subtracting the at least one second Representatives (or the mean value MR2) and the at least one first representative (or the mean value MR1) are formed.

• - RS = R1- R2;
• - RS = R2 - R1;
• - RS = MR1 - R2;
• - RS = R2 - MR1;
• - RS = R1- MR2;
• - RS = MR2 - R1;
• - RS = MR1- MR2;
• - RS = MR2 -MR1.

If, for example, the representative for a measure of a determination of the representative for a measure of a disturbance in a frequency range of a DSL signal is referred to as the value RS, then RS can be determined according to or based on one of the following regulations:

• - RS = R1- R2;
• - RS = R2 - R1;
• - RS = MR1 - R2;
• - RS = R2 - MR1;
• - RS = R1-MR2;
• - RS = MR2 - R1;
• - RS = MR1- MR2;
• - RS = MR2 -MR1.

Regarding the in 3a diagram presented as an example 300 and assuming that R1 = SNR1 and R2 = SNR2, RS could therefore be determined as RS = SNR1 - SNR2. If, for example, R1 = [R1 ₁ , ... R1 _i ], then first the mean value MR1 could be determined, and then RS could be determined as RS = MR1 - SNR2.

Regarding the in 3b diagram presented as an example 310 and assuming that R1 = SNR1 and R2 = SNR2, RS could therefore be determined as RS = SNR1 - SNR2. If, for example, R1 = [R1 ₁ , ... R1 _i ] and R2 = [R2 ₁ , ... R2 _k ], then first the mean value MR1 and the mean value MR2 could be determined, and then RS as RS = MR1 - MR2 be determined.

These statements apply analogously to the SIR, for example.

For example, SIR and SNR can be specified in dB (or db).

For example, the at least one first representative and / or the at least one second representative in the device 100 . 150 can be determined, or alternatively, the at least one first representative and / or the at least one second representative on the device 100 . 150 received by an external device. For example, is the device 100 . 150 Part of a PLC modem 210 . 220 of the at least one PLC modem, then the device 100 . 150 be set up, for example, for the at least one first representative and / or the at least one second representative of the DSL modem 230 or from the in 2 B shown control device 280 to receive, for example over the connection 250 or the connection 281 , For example, is the device 100 . 150 Part of the control device 280 the 2 B , then the device 100 . 150 be set up, for example, for the at least one first representative and / or the at least one second representative of the DSL modem 230 to receive, for example via connection 282 ,

4 FIG. 13 illustrates a flow diagram of an exemplary embodiment of a method 400 according to the present invention. This method can, for example, be part of the method 100 ' and will be before the step 110 of method 100 'and the method 400 can by device 100 or device 150 be performed.

method 400 comprises determining the at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, based on a set of first data, which is based on a measurement in the at least one frequency sub-range of the first type of DSL signal were determined (step 410 ), and determining the at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range, based on a set of second data, which is based on a measurement in the at least one Frequency sub-range of the second type of DSL signal were determined (step 420 ). steps 410 and 420 can be done in any order.

If the procedure 400 through the device 150 is carried out, then the device 150 Means for determining the at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, based on a set of first data, which is based on a measurement in the at least one frequency sub-range of the first type of the DSL signal were determined, and means for determining the at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range, based on a set of second data , which were determined based on a measurement in the at least one frequency sub-range of the second type of DSL signal.

Determining the at least one first representative (step 410 ) can be analogous to the explanations regarding at least one first representative 3a and the curve 310 and / or with respect to the at least one first representative 3b and the curve 320 The set of first data, which was determined based on a measurement in the at least one first frequency sub-range of the first type of DSL signal, for example SNR values or SIR values for different frequencies in the frequency spectrum of the first frequency range of the DSL signal ( what a 3a eg as an SNR curve 310 are represented visually) or comprise at least in each frequency sub-range of the at least one frequency sub-range of the first type, or other measurement data of the DSL signal which were measured in each frequency sub-range of the at least one frequency sub-range of the first type or which are based on a Measurements were determined in each frequency sub-range of the at least one frequency sub-range of the first type, and make it possible to determine SNR values or SIR values within each frequency sub-range of the at least one frequency sub-range of the first type.

Determining the at least one second representative (step 420 ) can be analogous to the explanations regarding at least one second representative 3a and the curve 310 take place, and / or with respect to the at least one first representative 3b and the curve 320 take place, the set of second data, which was determined based on a measurement in the at least one first frequency sub-range of the second type of DSL signal, for example SNR values or SIR values for different frequencies in the frequency spectrum of the first frequency range of the DSL signal ( what a 3a eg as an SNR curve 310 are represented visually) or comprise at least in each frequency sub-range of the at least one frequency sub-range of the second type, or other data of the DSL signal which were measured in each frequency sub-range of the at least one frequency sub-range of the second type or which are based on a measurement in each frequency sub-range of the at least one frequency sub-range of the second type has been determined and which make it possible to determine SNR values or SIR values within each frequency sub-range of the at least one frequency sub-range of the second type.

The device 100 or 150 can, for example, determine the set of first data itself, for example based on a measurement in the at least one frequency sub-range of the first type of the DSL signal, and can, for example, determine the set of first data itself, for example based on a measurement in the at least one frequency sub-range of the second type of the DSL signal, in which case the device 100 or 150 preferably part of the DSL modem 230 can be, or part of the control device 280 can be, wherein the control device 280 then, for example, the measurement data required to determine the set of first data and the measurement data required to determine the set of second data via the connection 282 from the DSL modem 230 can receive, the DSL modem 230 is set up to carry out the measurement for obtaining the required measurement data for determining the set of first data and measurement for obtaining the required measurement data for determining the set of second data, and this measurement data for determining the set of first data and this measurement data for determining the set of second data the control device 280 to send.

5a FIG. 13 illustrates a flow diagram of an exemplary embodiment of a method 500 according to the present invention. This method 500 can be part of the process, for example 400 his. The procedure 500 can by device 100 or device 150 be performed.

method 500 comprises performing the measurement in the at least one frequency sub-range of the first type of DSL signal (step 510 ) and performing the measurement in the at least one frequency sub-range of the second type of DSL signal (step 520 ). steps 510 and 520 can be done in any order. step 510 will before the step 410 of the procedure 400 executed, and step 520 will before the step 420 of the procedure 400 otherwise, the order of the steps 410 . 420 . 510 and 520 be arbitrary. Based on the measurement data of the measurement in the at least one frequency sub-range of the first type of DSL signal (step 510 ) can then in step 410 the at least one first representative are determined, and based on the measurement data of the measurement in the at least one frequency sub-range of the second type of DSL signal (step 520 ) can then in step 420 the at least one second representative can be determined.

If the procedure 500 through the device 150 is carried out, then the device 150 Comprise means for performing the measurement in the at least one frequency sub-range of the first type of the DSL signal, and comprise means for performing the measurement in the at least one frequency sub-range of the second type of the DSL signal.

Thus, the device 100 or 150 in this exemplary embodiment preferably part of the DSL modem 230 be so the DSL modem 230 is set up, the measurement according to step 510 and step 520 on the DSL signal, which is for example via the line 240 is received to perform.

The procedure 500 can also from a device other than the device 100 and 150 be performed.

For example, if the device 100 or 150 Part of a PLC modem 210 . 220 of the at least one PLC modem 210 . 220 then, for example, the method 500 through the DSL modem 230 be done, and the DSL modem 230 can be set up based on the set of first data in step 510 performed measurement and to the device 100 or 150 to send, and the set of second data based on that in step 520 performed measurement and to the device 100 or 150 to send, this sending for example over the connection 250 can be done. For example, if the device 100 or 150 Part of the control device 280 then, for example, the method 500 through the DSL modem 230 be done, and the DSL modem 230 can be set up based on the set of first data in step 510 performed measurement and to the device 100 or 150 to send, and the set of second data based on that in step 520 performed measurement and to the device 100 or 150 to send, this sending for example over the connection 282 can be done.

5b FIG. 13 illustrates a flow diagram of an exemplary embodiment of a method 500 ' according to the present invention. This method 500 ' can be part of the process, for example 400 and / or part of the process 100 ' his. The procedure 500 can by device 100 or device 150 be performed.

method 500 comprises receiving the set of first data (step 540 ) which in step 410 can be used to determine the at least one first representative and which, for example, based on the measurement in step 510 were determined, and receiving the set of second data (step 550 ) which in step 420 can be used to determine the at least one first representative and which, for example, based on the measurement in step 520 were determined. If the process through the device 100 or the device 150 is performed, then receiving in step 540 receiving the set of first data from another device that is not the device 100 and / or device 150 is, represent, and receiving in step 550 receiving the set of second data from the further device. The further device can, for example, the DSL modem 230 or the control device 280 or another device.

steps 540 and 550 can be done in any order. step 540 will before the step 410 of the procedure 400 executed, and step 550 will before the step 420 of the procedure 400 otherwise, the order of the steps 410 . 420 . 540 and 550 be arbitrary.

If the procedure 500 ' through the device 150 is carried out, then the device 150 Comprise means for receiving the set of first data, and means for receiving the set of second data.

For example, in this exemplary embodiment, the device 100 or 150 Part of a PLC modem 210 . 220 of the at least one PLC modem, whereby in step 540 the set of first data about the connection 250 from the DSL modem 230 can be received, and being in step 540 the set of second data about the connection 250 from the DSL modem 230 can be received.

6a FIG. 13 illustrates a flow diagram of an exemplary embodiment of a method 600 according to the present invention. This method can, for example, be part of the method 100 ' and will be after the step 110 of the procedure 100 ' executed and the procedure 600 can by device 100 or device 150 be performed.

method 600 comprises causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal, in particular the change in the transmission power of at least one PLC modem in at least one frequency sub-range of the at least one frequency sub-range of the second type of frequency domain.

If the device 100 and 150 Part of a PLC modem 210 of the at least one PLC modem 210 . 220 , then causing a change in the transmission power of at least one PLC modem can cause a change in the transmission power of the corresponding PLC modem 210 the device 100 and 150 comprises, and, if the at least one PLC modem 210 . 220 of the system 200 , or 200 ' still comprises at least one further PLC modem (ie if the at least one PLC modem has a plurality of PLC modems 210 . 220 , then causing a change in the transmission power of at least one PLC modem can include causing a change in the transmission power of the at least one further PLC modem of the at least one further PLC modem, for example by sending a corresponding command from the PLC modem 210 the device 100 or 150 comprises, to the at least one further PLC modem, wherein the transmission of the command can take place via the PLC communication network, which is between the plurality of PLC modems via the power supply line 260 is trained.

If the procedure 600 ' through the device 150 is carried out, then the device 150 Means for causing a change in the transmission power of at least one PLC modem.

According to an exemplary embodiment, causing a change in the transmission power of at least one PLC modem (step 610 ) send a command to at least one PLC modem of the at least one PLC modem.

For example, sending a command to at least one PLC modem of the at least one PLC modem if a PLC modem 210 a plurality of PLC modems 210 . 220 the device 100 or 150 comprises sending the command to each of at least one further PLC modem of the plurality of PLC modems 210 . 220 include, as previously described by way of example.

If the device 100 or 150 for example part of the DSL modem 230 then sending a command to at least one PLC modem 210 . 220 of at least one PLC modem 210 . 220 through the DSL modem 230 take place, for example via the connection 250 , for example to each PLC modem of the at least one PLC modem 210 . 220 which have a plurality of PLC modems 210 . 220 could be. For example, the command can be sent to any PLC modem 210 . 220 of the at least one PLC modem 210 . 220 are sent, the PLC modem 210 for example the received command via the PLC communication network to each PLC modem of a further PLC modem of the plurality of PLC modems 210 . 220 can send and transmit.

If the device 100 or 150 for example part of the control device 280 then sending a command to at least one PLC modem 210 . 220 of at least one PLC modem 210 . 220 through the control device 280 take place, for example via the connection 281 , for example to each PLC modem of the at least one PLC modem 210 . 220 which have a plurality of PLC modems 210 . 220 could be. For example, the command can be sent to any PLC modem 210 . 220 of the at least one PLC modem 210 . 220 are sent, the PLC modem 210 for example, the command received via the PLC communication network to each PLC modem of a further PLC modem of the plurality of PLC modems 210 . 220 can send and transmit.

According to an exemplary embodiment of the method 600 comprises causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal, causing a reduction in the transmission power of at least one PLC modem if the measure indicated by the representative a disturbance in the frequency range of the DSL signal lies above a predefined first threshold.

If the degree of interference in the frequency range of the DSL signal indicated by the representative is above the predefined first threshold, it can be assumed that the at least one PLC modem 210 . 220 of the at least one PLC modem 210, 220, which is in the at least one frequency sub-range of the second type via the power supply line 260 transmits, the DSL signal interferes too much, and therefore causing a reduction in the transmission power of at least one PLC modem (or each PLC modem) of the at least one PLC modem 210 . 220 respectively. For example, this can be done by adapting a PSD mask (PSD: Power Spectral Density) for the at least one PLC modem, the command sent to the at least one PLC modem of the at least one PLC modem, for example, correspondingly adapting the respective PSD Mask of the PLC modem. For example, causing a reduction in the transmission power can lower the transmission power by a power value, which is determined, for example, based on the measure of a disturbance in the frequency range of the DSL signal indicated by the representatives (for example by means of a device 100 or 150 ), take place, for example the command sent to the at least one PLC modem of the at least one PLC modem indicating or comprising the power value.

For example, the method 600 the comparison include whether the measure of interference indicated by the representative in the frequency range of the DSL signal is above the predefined first threshold, and if so, the method can 600 with step 610 and causing a reduction in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 continue.

According to an exemplary embodiment of the method 600 comprises causing a change in the transmit power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal, causing an increase in the transmit power of at least one PLC modem if the measure indicated by the representative a disturbance in the frequency range of the DSL signal is below a predefined second threshold.

If the measure of a disturbance in the frequency range of the DSL signal indicated by the representative is below the predefined second threshold, it can be assumed that the at least one PLC modem 210 . 220 of the at least one PLC modem 210, 220, which is in the at least one frequency sub-range of the second type via the power supply line 260 transmits, does not interfere with the DSL signal or only slightly interferes with it, and therefore causing an increase in the transmission power of at least one PLC modem (or each PLC modem) of the at least one PLC modem 210 . 220 respectively. For example, this can be done by adapting a PSD mask (PSD: Power Spectral Density) for the at least one PLC modem, the command sent to the at least one PLC modem of the at least one PLC modem, for example, correspondingly adapting the respective PSD Mask of the PLC modem. For example, the transmission power can be increased, the transmission power increased by a power value, the command sent to the at least one PLC modem of the at least one PLC modem, for example, indicating or comprising the power value.

For example, the method 600 the comparison includes whether the measure of interference indicated by the representative in the frequency range of the DSL signal is below the predefined second threshold, and if so, the method can 600 with step 610 and causing an increase in transmit power of at least one PLC modem of at least the PLC modem 210 . 220 continue.

For example, the predefined first threshold may correspond to the first predefined threshold, or alternatively the predefined second threshold may be smaller than the predefined first threshold, which results in, for example, the method 600 ' a hysteresis can be achieved.

6b FIG. 13 illustrates a flow diagram of an exemplary embodiment of a method 600 ' according to the present invention. This method 600 ' can, for example, the process 100 ' and the procedure 600 include, and the process 600 ' can by device 100 or device 150 be performed.

The procedure 600 ' can, for example, as a control loop for regulating the transmission power of at least one PLC modem (or each PLC modem) of the at least one PLC modem 210 . 220 to be viewed as.

For example, at the beginning of the method, the transmission power of at least one PLC modem (or each PLC modem) of the at least one PLC modem 210 . 220 in the frequency range (and in particular in each of the at least one frequency sub-range of the second type) can be set to a predefined normal transmission power, such as, for example, by means of a predefined PSD mask.

In step 110 includes the process 600 ' determining the representative for a measure of interference in a frequency range of a DSL signal based at least on (i) at least one first representative, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure for a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents, in which a PLC modem transmits or at least predominantly transmits (step 110 ). All statements on procedures apply to this 110 ' which is also the procedure 400 . 500 and 500 ' may include, equally.

Based on the measure, a measure of interference in a frequency range of a DSL signal, which is indicated by the step 110 identified representative is specified in step 630 checks whether a change in the transmission power of at least one PLC modem of the at least one PLC modem 210 . 220 is required in the frequency range (for example, in particular a change in the transmission power in at least one frequency sub-range of the at least one frequency sub-range of the second type). If so, then the procedure can 600 ' by causing a change in the transmission power from the at least one PLC modem of the at least one PLC modem 210 . 220 proceed based on the determined representative for a measure of interference in the frequency range of the DSL signal (step 610 ), with the previous statements on step 610 equally for the step 610 of the procedure 600 ' can apply. If the check in step 630 is negative, then the procedure 600 ' again with finding a representative in step 110 begin, for example after a predefined time has elapsed, and thus continuous monitoring of the extent of a disturbance in a frequency range can be repeated by repeating the step 110 respectively.

After initiating a change in the transmission power of at least one PLC modem of the at least one PLC modem in step 610 can the procedure 600 ' for example, again with the determination of a representative in step 110 begin, for example after a predefined time has elapsed, and it can then step in 630 are checked whether a change in the transmission power of at least one PLC modem of the at least one PLC modem 210 . 220 is required in the frequency range (for example, in particular a change in the transmission power in at least one frequency sub-range of the at least one frequency sub-range of the second type). The transmit power of at least one PLC modem of the at least one PLC modem can thus be adaptive 210 . 220 in step 610 through the process 600 ' be adapted, for example during normal useful operation of the at least one PLC modem 210 . 220 and especially without special test signals.

According to a first exemplary embodiment of methods 600 ' can, for example, check in step 610 include a check as to whether the measure of interference indicated by the representative in the frequency range of the DSL signal is above the predefined first threshold, and if so, the method may 600 ' with step 610 and causing a reduction in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 proceed as before to proceed 600 has been described.

Then the procedure 600 ' for example, again with the determination of a representative in step 110 begin, for example after a predefined time has elapsed, and it can then step in 630 it is checked whether the reduced transmission power of the at least one PLC modem means that in step 110 The representative determined for a measure of a disturbance in a frequency range specifies a measure of a disturbance which is now below the predefined first threshold. If not, again a reduction in the transmission power of at least one PLC modem of the at least PLC modem can be initiated 210 . 220 in step 610 be carried out, and thus, for example, the transmission power of the at least one PLC modem of the at least PLC modem can be carried out step by step 210 . 220 be reduced until the level of the disturbance (determined in step 110 ) is low enough, ie below the predefined first threshold.

According to a second exemplary embodiment of methods 600 ' can, for example, check in step 610 include a check as to whether the level of interference indicated by the representative in the frequency range of the DSL signal is below the predefined second threshold, and if so, the method may 600 ' with step 610 and causing an increase in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 proceed as before to proceed 600 has been described.

Then the procedure 600 ' for example, again with the determination of a representative in step 110 begin, for example after a predefined time has elapsed, and it can then step in 630 checked whether the increased transmission power of the at least one PLC modem means that the in step 110 The representative determined for a measure of a disturbance in a frequency range specifies a measure of a disturbance which is now above the predefined second threshold. If not, it can in turn cause an increase in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 in step 610 be carried out, and thus, for example, the transmission power of the at least one PLC modem of the at least PLC modem can be carried out step by step 210 . 220 be raised until the level of the disturbance (determined in step 110 ) is considered to be just acceptable, that is, for example, is above the predefined first threshold for the first time.

If the procedure 600 ' through the device 150 is carried out, then the device 150 Means for performing the procedure 600 ' include.

According to a third exemplary embodiment of methods 600 ' can, for example, check in step 610 include a check as to whether the measure of interference indicated by the representative in the frequency range of the DSL signal is above the predefined first threshold, and if so, the method may 600 ' with step 610 and causing a reduction in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 proceed as before to proceed 600 and the process 600 ' may include checking whether the amount of interference in the frequency range of the DSL signal indicated by the representative is below the predefined second threshold, and if so, the method 600 ' with step 610 and causing an increase in the transmission power of at least one PLC modem of the at least PLC modem 210 . 220 proceed as before to proceed 600 has been described.

If both tests are negative, then the procedure can 600 ' again with finding a representative in step 110 begin, for example after a predefined time.

After performing an increase in transmit power or a decrease in transmit power in step 610 can the procedure 600 ' for example, again with the determination of a representative in step 110 begin, for example after a predefined time.

• - mindestens einem ersten Repräsentanten, welcher ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in mindestens einem Frequenzunterbereich eines ersten Typs des jeweiligen Frequenzbereichs darstellt, und
• - mindestens einem zweiten Repräsentanten, welcher ein Maß für eine Übertragungsqualität eines Teils des DSL-Signals in mindestens einem Frequenzunterbereich eines zweiten Typs des jeweiligen Frequenzbereichs darstellt;
• - wobei jeder Frequenzunterbereich des mindestens einen Frequenzunterbereichs des ersten Typs einen Frequenzunterbereich des jeweiligen Frequenzbereichs darstellt, in welchem ein PLC-Modem nicht oder gegenüber einem Frequenzunterbereich des zweiten Typs mit verringerter Leistung sendet, und
• - wobei jeder Frequenzunterbereich des mindestens einen Frequenzunterbereichs des zweiten Typs einen Frequenzunterbereich des jeweiligen Frequenzbereichs darstellt, in welchem ein PLC-Modem sendet oder zumindest überwiegend sendet.

According to an exemplary further embodiment, the DSL signal is assigned a plurality of frequency ranges which, for example, do not overlap one another, and a method according to this exemplary further embodiment comprises the method for each frequency range of the several frequency ranges 100 ' , ie that determining a representative for a measure of a disturbance in the respective frequency range of the DSL signal based at least on

• at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the respective frequency range, and
• at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the respective frequency range;
• - wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the respective frequency range in which a PLC modem does not or with respect to one Sub-frequency range of the second type with reduced power transmits, and
• - Each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the respective frequency range in which a PLC modem transmits or at least predominantly transmits.

Thus the procedure 100 ' in this exemplary further embodiment, each frequency range of the multiple frequency ranges of the DSL signal is carried out, and a respective representative for a measure of a disturbance in the respective frequency range of the DSL signal can be determined for each frequency range of the multiple frequency ranges. The device 150 may therefore include means, the method 100 ' for each frequency range of the multiple frequency ranges. Furthermore, the method 100 ' , which are carried out for each frequency range of the multiple frequency ranges of the DSL signal, also the method 400 , and or 500 and or 500 ' and or 600 include.

The method can be used for each frequency range of the multiple frequency range of the DSL signal 600 ' be carried out to the transmission power of the at least one PLC modem of the at least one PLC modem 210 . 220 in the respective frequency range (step 610 within the process 600 ' ). The device 150 may therefore include means, the method 600 ' for each frequency range of the multiple frequency ranges.

7a represents for example the SNR course of a DSL signal with several frequency bands, this DSL signal, for example, on the DSL modem 230 over the line 240 can be received. A first frequency range of the multiple frequency ranges is between f ₁ and f ₂ , and a second frequency range of the multiple frequency ranges is between f ₃ and f ₄ , and a third frequency range of the multiple frequency ranges is between f ₅ and f ₆ . The curves 710 . 720 and 730 show the SNR curve of the exemplary DSL signal without PLC faults (ie e.g. when the PLC modems are switched off 210 . 220 ), and the curves 711 . 721 . 731 show the SNR course of the exemplary DSL signal with PLC faults (eg if at least one of the at least one PLC modem sends). The first frequency range [f ₁ , f ₂ ], the second frequency range [f ₃ , f ₄ ] and the third frequency range [f ₅ , f _6] can be frequency ranges in the downstream.

The at least one frequency sub-range of the first type for the first frequency range [f ₁ , f ₂ ] comprises the frequency sub-range [f ₁ , f _1,1 ] and the frequency sub-range [f _1,2 , f ₂ ]. The at least one frequency sub-range of the second type for the first frequency range [f ₁ , f ₂ ] comprises the frequency sub-range [f ₁ , ₁ , f _1,2 ].

The at least one frequency sub-range of the first type for the second frequency range [f ₃ , f _4] comprises the frequency sub-range [f ₃ , f _3.1 ] and the frequency sub-range [f _3.2 , f _3.3 ]. The at least one frequency sub-range of the second type for the second frequency range [f ₃ , f _4] comprises the frequency sub-range [f _3.1 , f _3.2 ] and the frequency sub-range [f _3.3 , f ₄ ].

The at least one frequency sub-range of the first type for the third frequency range [f ₅ , f ₆ ] comprises the frequency sub-range [f ₅ , f _5.1 ], the frequency sub-range [f _5.2 , f _5.3 ] and the frequency sub-range [f _{5 , 4} , f _5.5 ]. The at least one frequency sub-range of the second type for the third frequency range [f ₅ , f ₆ ] comprises the frequency sub-range [f _5.1 , f _5.2 ], the frequency sub-range [f _5.3 , f _5.4 ] and the frequency sub-range [ f _5.5 , f ₆ ].

For example, the method 400 eg together with the procedure 500 ' or the procedure 500 for each frequency range of the multiple frequency ranges [f ₁ , f ₂ ], [f ₃ , f ₄ ] and [f ₅ , f ₆ ].

The one by step 410 The first representative determined for the first frequency range comprises, for example, a value R1.1 (reference symbol 741 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f ₁ , f _1,1 ] of the first type, and a value R1,2 (reference symbol 743 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _1,2 , f ₂ ] of the first type. The one by step 420 The second representative determined for the first frequency range includes, for example, a value R2 (reference symbol 742 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _1.1 , f _1.2 ] of the second type. Based on this determined first representative and the determined second representative, step can 110 of the procedure 100 ' the representative for a measure of a disturbance in the first frequency range can be determined, in this example the representative for a measure of a disturbance in the first frequency range as the value 12 dB (reference symbol 749 ) is determined.

The one by step 410 The first representative determined for the second frequency range comprises, for example, a value R1.1 (reference symbol 751 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f ₃ , f _3.1 ] of the first type, and one Value R1.2 (reference number 753 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _3.2 , f _3.3 ] of the first type. The one by step 420 The second representative determined for the second frequency range includes, for example, a value R2.1 (reference symbol 752 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _3.1 , f _3.2 ] of the second type, and a value R2.2 (reference symbol 754 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _3.3 , f ₄ ] of the second type. Based on this determined first representative and the determined second representative, step can 110 of the procedure 100 ' the representative for a measure of a disturbance in the second frequency range can be determined, in this example the representative for a measure of a disturbance in the first frequency range as the value 14 dB (reference symbol 759 ) is determined.

The one by step 410 The first representative determined for the third frequency range includes, for example, a value R1.1 (reference symbol 761 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f ₅ , f _5.1 ] of the first type, a value R1.2 (reference symbol 763 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _5.2 , f _5.3 ] of the first type, and a value R1.3 (reference symbol 765 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _5.4 , f _5.5 ] of the first type. The one by step 420 The second representative determined for the third frequency range includes, for example, a value R2.1 (reference symbol 762 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _5.1 , f _5.2 ] of the second type, a value R2.2 (reference symbol 764 ), which represents a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _5.3 , f _5.4 ] of the second type, and a value R2.3 (reference symbol 766 ), which is a measure of a transmission quality of a part of the DSL signal in the frequency sub-range [f _5.5 , f ₆ ] of the second type. Based on this determined first representative and the determined second representative, step can 110 of the procedure 100 ' the representative for a measure of a disturbance in the third frequency range can be determined, in this example the representative for a measure of a disturbance in the first frequency range as the value 13 dB (reference symbol 766 ) is determined.

8th based on the 7a and 7 and visualizes, for each frequency range of the several frequency ranges [f ₁ , f ₂ ], [f ₃ , f _4] , [f ₅ , f ₆ ], the initiation of a change in the transmission power of at least one PLC modem (e.g. from the at least one PLC modem 210 . 200 ) according to procedure 600 based on performing the step 610 in the respective frequency range by causing a reduction in the transmission power of at least one PLC modem (or each PLC modem) of the at least one PLC modem 210 . 220 in the respective frequency range.

For example, this can be done for each frequency range of the multiple frequency ranges [f ₁ , f ₂ ], [f ₃ , f ₄ ], [f ₅ , f ₆ ] by adapting a PSD mask (PSD: Power Spectral Density) for the at least one PLC modem. For example, causing a reduction in the transmission power in a respective frequency range of the plurality of frequency ranges can lower the transmission power by a power value, which is determined, for example, based on the degree of interference in the respective frequency range of the DSL signal indicated by the representatives (for example by means of a device 100 or 150 ), as is already the case with procedures 600 (and e.g. step 610 ) was carried out. In the example of the 8th For example, for the first frequency range [f ₁ , f ₂ ] the power value for lowering the PSD mask to the value 12 dB is determined, which is the determined representative 749 for the first frequency range. In the example of the 8th For example, for the second frequency range [f ₃ , f _4] the power value for lowering the PSD mask to the value 14 dB is determined, which is the determined representative 759 for the second frequency range. In the example of the 8th For example, for the third frequency range [f ₅ , f _6] the power value for lowering the PSD mask to the value 13 dB is determined, which is the representative determined 769 for the third frequency range.

According to an exemplary further embodiment of the invention, which can apply to all of the aforementioned methods and devices, the DSL communication network represents a second communication network, which is not limited to DSL and can be a wired or a wireless communication network, in system 200 respectively. 200 ' the DSL modem 230 through a modem 230 is replaced for the second communication network. If the second communication network is a wired communication network, then the line can 240 of the system 200 or 200 ' for communication of the modem 230 for the second communication network, and if the second communication network is a wireless communication network, then the line can 240 of the system 200 or 200 ' omitted and the interface 231 of the modem 230 can be a wireless interface that includes, for example, at least one antenna into which interference from one or more PLC modems 210 . 220 can be coupled. The DSL signal can therefore be viewed as a signal of the second communication network, for example on the modem 230 of the second communication network can be received.

For example, the PLC communication network and the second communication network are set up in such a way that direct data transmission between the second communication network and the PLC communication network is not possible, in particular because a standard of the second communication system, which is provided by the modem 230 over the interface 231 is used for communication in the second communication network, is not compatible with a PLC standard which of the at least one PLC modem 210 . 220 is used for PLC communication in the PLC communication network.

According to an exemplary aspect of the further exemplary embodiment, the method can 100 ' determining a representative of a measure of interference in a frequency range of a signal of the second communication network, based at least on (i) at least one first representative, which is a measure of a transmission quality of a part of the signal of the second communication network in at least one frequency sub-range of a first type of the frequency range, and (ii) at least one second representative, which represents a measure of a transmission quality of a part of the signal of the second communication network in at least one frequency sub-range of a second type of the frequency range; wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and wherein each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range represents in which a PLC modem transmits or at least predominantly transmits.

Each connection shown in the described embodiments (configurations) is to be understood such that the components involved are functionally coupled. Thus, the connections can be made directly or indirectly with any number or combination of intermediate elements, and there can only be a functional relationship between the components.

• a) reine Hardware-Schaltungsimplementierungen (wie Implementierungen nur in analogen und/oder digitalen Schaltungen)
• (b) Kombinationen von Schaltungen und Software (und/oder Firmware), wie z.B.: (i) auf eine Kombination aus Prozessor(en) oder (ii) auf Teile von Prozessor(en) / Software (einschließlich digitaler Signalprozessor(en)), Software und Speicher(en), die zusammenwirken, um eine Vorrichtung, wie beispielsweise ein Mobiltelefon, dazu zu bringen, verschiedene Funktionen auszuführen) und
• (c) auf Schaltungen, wie beispielsweise einen oder mehrere Mikroprozessoren oder einen Teil eines oder mehrerer Mikroprozessoren, die Software oder Firmware zum Betrieb benötigen, auch wenn die Software oder Firmware nicht physisch vorhanden ist.

In addition, the term "circuit" as used in this text refers to one of the following:

• a) pure hardware circuit implementations (such as implementations only in analog and / or digital circuits)
• (b) combinations of circuits and software (and / or firmware), such as: (i) a combination of processor (s) or (ii) parts of processor (s) / software (including digital signal processor (s)) , Software and memory (s) that cooperate to cause a device (such as a cell phone to perform various functions) and
• (c) on circuits, such as one or more microprocessors or part of one or more microprocessors, which require software or firmware to operate, even if the software or firmware is not physically present.

This definition of "circuit" applies to all uses of this term in this text, including all claims. As another example, as used in this text, the term "circuit" also includes an implementation of only one processor (or multiple processors) or part of a processor and its (or its) associated software and / or firmware. The term “circuit” also includes, for example, an integrated baseband circuit or an integrated application processor circuit for a mobile phone.

Any of the processors mentioned in this text, especially the processor 110 the 1 could be a processor of any suitable type. Each processor can have one or more microprocessors, one or more processors with associated digital signal processors, one or more processors without associated digital signal processor (s), one or more special computer chips, one or more field programmable gate arrays (FPGAS), one or more controllers , include one or more application specific integrated circuits (ASICS) or one or more computers. The corresponding structure / hardware was programmed in such a way that it performs the described function.

In addition, all actions (or steps) described or illustrated herein may be performed using executable instructions in a general purpose or special purpose processor and stored on a computer readable storage medium (e.g., hard drive, memory, or the like) executed by such a processor. References to “computer readable storage media” should be understood to include specific circuits such as FPGAs, ASICs, signal processing devices and other devices.

In addition, the wording “at least one of (i) ...., (ii) .... (n)” with n elements is to be understood that only one element of the n elements can be selected, or any combination of two or more of the n elements can be selected, or that all n elements can be selected.

It is to be understood that all of the illustrated embodiments are only exemplary and that each feature that is presented for a particular exemplary embodiment, with each aspect of the invention, alone or in combination with each feature that is for the same or another particular exemplary embodiment is presented and / or can be used in combination with any other feature not mentioned. It is further understood that any feature that represents, for example, an embodiment in a certain category, can also be used accordingly in another category.

Claims (20)

Process comprising: - Determining a representative for a measure of interference in a frequency range of a DSL signal based at least on at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a first type of the frequency range, and - at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of a second type of the frequency range; - wherein each frequency sub-range of the at least one frequency sub-range of the first type represents a frequency sub-range of the frequency range in which a PLC modem does not transmit or transmits with reduced power compared to a frequency sub-range of the second type, and - Each frequency sub-range of the at least one frequency sub-range of the second type represents a frequency sub-range of the frequency range in which a PLC modem transmits or at least predominantly transmits. Procedure according to Claim 1 wherein determining the representative for a measure of interference in a frequency range of a DSL signal comprises determining a relationship between the at least one first representative and the at least one second representative. Method according to one of claims 1 and 2, wherein the frequency range represents a downstream frequency range. The method of any one of claims 1 to 3, wherein the at least one first representative comprises one of the following: a value which represents a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range; a value for each frequency sub-range of the at least one frequency sub-range of the first type of the frequency range, which represents a measure of the transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type. Procedure according to Claim 4 , wherein the value, which is a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the first type of the frequency range, represents a signal-to-noise ratio or a signal-to-interference ratio; or wherein the respective value of a frequency sub-range of the at least one frequency sub-range of the first type of the frequency range, which represents a measure for a transmission quality of a part of the DSL signal in the respective frequency sub-range of the first type, a signal-to-noise ratio or a signal to interference ratio. The method of any one of claims 1 to 5, wherein the at least one second representative comprises one of the following: a value which represents a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the second type of the frequency range; a value for each frequency sub-range of the at least one frequency sub-range of the second type of the frequency range, which represents a measure of the transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type. Procedure according to Claim 6 , wherein the value, which is a measure of a transmission quality of a part of the DSL signal in the at least one frequency sub-range of the second type of the frequency range, represents a signal-to-noise ratio or a signal-to-interference ratio; or wherein the respective value of a frequency sub-range of the at least one frequency sub-range of the second type of the frequency range, which represents a measure for a transmission quality of a part of the DSL signal in the respective frequency sub-range of the second type, a signal-to-noise ratio or a signal to interference ratio. Method according to one of claims 1 to 7, wherein the representative for a measure of a disturbance in a frequency range of the DSL signal comprises a power value. Method according to one of claims 1 to 8, wherein at least one frequency sub-range of the at least one frequency sub-range of the first type each represents a frequency sub-range in which the transmission power of a PLC modem is reduced or equal to zero, in particular by using at least one notch filter in the PLC Modem or by masking out at least one carrier of a multi-carrier signal of the PLC modem, the at least one carrier being in the respective frequency sub-range, and / or wherein at least one frequency sub-range of the at least one frequency sub-range of the first type each represents a frequency sub-range which is not in the PLC Frequency spectrum of the PLC transmission system used by the PLC modem is. A method according to any one of claims 1 to 9, comprising: - Determining the at least one first representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the first type of the frequency range, based on a set of first data, which is based on a measurement in the at least one frequency sub-range of the first Type of DSL signal were determined, and - Determining the at least one second representative, which represents a measure of a transmission quality of a part of the DSL signal in at least one frequency sub-range of the second type of the frequency range, based on a set of second data, which is based on a measurement in the at least one frequency sub-range of the second Type of DSL signal were determined. Procedure according to Claim 10 , wherein the set of first data is representative of a signal-to-noise ratio or a signal-to-interference ratio of that part of the DSL signal in: - each frequency sub-range of the at least one frequency sub-range of the first type; or - which is at least one frequency sub-range of the first type; and wherein the set of second data is representative of a signal-to-noise ratio or a signal-to-interference ratio of that part of the DSL signal in: - each frequency sub-range of the at least one frequency sub-range of the second type; or - which is at least one frequency sub-range of the second type Method according to one of claims 1 to 11, comprising causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL signal, in particular the change in the transmission power of at least one PLC modem in at least one frequency sub-range of the at least one frequency sub-range of the second type of the frequency range. Procedure according to Claim 12 wherein causing a change in transmit power from at least one PLC modem based on the determined representative for a measure of interference in the frequency range of the DSL signal comprises causing a decrease in transmit power from at least one PLC modem, if that is done by the representative displayed measure of a disturbance in the frequency range of the DSL signal is above a predefined first threshold, and / or wherein causing a change in the transmission power of at least one PLC modem based on the determined representative for a measure of a disturbance in the frequency range of the DSL Signal causing an increase in the transmission power of at least one PLC modem comprises if the measure of a disturbance indicated by the representative in the frequency range of the DSL signal is below a predefined second threshold. The method of any of claims 12 to 13, wherein causing a change in the transmit power from at least one PLC modem comprises sending a command to at least one PLC modem of the at least one PLC modem. A method according to any one of claims 10 to 11, comprising: Performing the measurement in the at least one frequency sub-range of the first type of DSL signal and determining the set of first data; and Performing the measurement in the at least one frequency sub-range of the second type of DSL signal and determining the set of second data. A method according to any one of claims 10 to 11, comprising: - receiving the set of first data, and - receiving the set of second data. Apparatus comprising means for performing the method according to one of claims 1 to 16. Apparatus comprising at least one processor and at least one memory with computer program code, wherein the at least one memory and the computer program code are configured to cause an apparatus with the at least one processor to carry out the method according to one of claims 1 to 16. Device, which a device after Claim 17 or 18 includes, in particular no reference to Claim 16 is taken, the device being a PLC modem or a control device. DSL modem, which is a device after Claim 17 or 18 includes, in particular no reference to Claim 15 is taken.

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