WO2016082221A1 - Signal sending method, apparatus and system - Google Patents

Signal sending method, apparatus and system Download PDF

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Publication number
WO2016082221A1
WO2016082221A1 PCT/CN2014/092579 CN2014092579W WO2016082221A1 WO 2016082221 A1 WO2016082221 A1 WO 2016082221A1 CN 2014092579 W CN2014092579 W CN 2014092579W WO 2016082221 A1 WO2016082221 A1 WO 2016082221A1
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Prior art keywords
subcarrier
psd
psd mask
victim
length
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PCT/CN2014/092579
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French (fr)
Chinese (zh)
Inventor
涂建平
付饶
易溪林
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华为技术有限公司
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Priority to CN201480033634.5A priority Critical patent/CN105830353B/en
Priority to PCT/CN2014/092579 priority patent/WO2016082221A1/en
Publication of WO2016082221A1 publication Critical patent/WO2016082221A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a method, an apparatus, and a system for signaling.
  • Crosstalk is the most common phenomenon in telephone network systems.
  • Crosstalk refers to the multi-channel signal of the same Digital Subscriber Line Access Multiplexer (DSLAM) due to the principle of electromagnetic induction. Interference occurs between each other, so that the receiving end receives signals from other lines.
  • DSLAM Digital Subscriber Line Access Multiplexer
  • the uplink channel and the downlink channel adopt a frequency division multiplexing technology, that is, the transmission of the uplink signal and the transmission of the downlink signal use different frequencies.
  • the near-end string Near-end crosstalk NEXT
  • Far-end crosstalk uses Vectoring technology to perform joint transmission and reception at the central office. To cancel, where NEXT refers to the signal sent by the receiving end of the receiving side, and FEXT refers to the signal received by the receiving end of other lines of the opposite end.
  • the same frequency duplex communication technology can be used, that is, the uplink and downlink use the same frequency range for signal transmission.
  • the NEXT effect is severe on the overlapping frequency, and the prior art method cannot be used to reduce the impact of NEXT.
  • Embodiments of the present invention provide a method, apparatus, and system for signaling to reduce the impact of NEXT.
  • a first aspect of the embodiments of the present invention provides a method for signaling, including:
  • the interfering user receives the power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, and the range of the overlapping frequency refers to an uplink frequency of the interfering user end.
  • a first power spectral density PSD mask of the first subcarrier according to the range of the overlapping frequency, where the first PSD mask is used to define that the interfering UE sends on the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
  • a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier, where the PSD used by the first subcarrier to send an uplink signal Less than or equal to the first PSD mask of the first subcarrier.
  • the power back-off parameter further includes a second PSD mask of the first sub-carrier, where the second PSD mask is centered
  • the office indicates an upper limit value of the PSD used by the interfering UE to send an uplink signal on the first subcarrier;
  • Determining, by the interfering UE, the PSD used to send the uplink signal on the first subcarrier according to the first PSD mask of the first subcarrier including:
  • a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier and a second PSD mask of the first subcarrier, where The PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the second PSD mask of the first subcarrier.
  • the interfering user end acquires a first PSD mask of the first subcarrier according to the range of the overlapping frequency ,include:
  • the interfering UE Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel mold.
  • the interfering UE Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel Module, including:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier
  • the interfering UE Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel Module, including:
  • OPBOMASK(f) REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier
  • the interfering user end acquires a first power spectral density of the first subcarrier according to the range of the overlapping frequency PSD mask, including:
  • the interfering UE is in the first according to a central office connected to the victim user end
  • the power spectral density of the reference noise transmitted in the downlink direction of the subcarrier and the strength of the near-end crosstalk channel acquire the first PSD mask of the first subcarrier.
  • the first PSD mask of the carrier includes:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f represents the first subcarrier
  • the REFTXNPSD ds (f) represents a central office connected to the victim user end.
  • the power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel
  • NEXTChannel(K next , f) 10log 10 (K next ⁇ f 3/2 )
  • K next represents the coupling coefficient of the near-end crosstalk
  • LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user, Where k1 0 represents the length of the line appliance that interferes with the user end, and ⁇ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  • a seventh possible implementation when the length of the line electrical device of the interfering user end is greater than or equal to the length of the line electrical appliance of the victim user end,
  • the first PSD mask of the carrier includes:
  • OPBOMASK(f) REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f represents the first subcarrier
  • the REFTXNPSD ds (f) represents a central office connected to the victim user end.
  • the interfering user end is configured according to the first subcarrier
  • the PSD mask and the second PSD mask of the first subcarrier determine a PSD used to transmit an uplink signal on the first subcarrier, including:
  • the interfering UE determines the first in the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier. a PSD used by the subcarrier to transmit an uplink signal, where the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to a third PSD mask of the first subcarrier, where the first subcarrier is The third PSD mask represents the highest PSD initial limit used by the interfering user upstream direction in the initial channel discovery phase.
  • the interfering user end receives the power backoff parameter sent by the central office end ,include:
  • the interfering UE receives the power backoff parameter through an O-SIGNATURE message.
  • a second aspect of the embodiments of the present invention provides a device for signaling, including:
  • a receiving module configured to use a power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to an uplink frequency of the interference user end and a downlink frequency of the victim user end The extent of overlap;
  • an acquiring module configured to acquire, according to the range of the overlapping frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to define that the interference UE sends the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
  • a processing module configured to determine, according to the first PSD mask of the first subcarrier, the first The PSD used by the subcarrier to transmit the uplink signal, and the PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the first PSD mask of the first subcarrier.
  • the power backoff parameter further includes a second PSD mask of the first subcarrier, where the second PSD mask is centered
  • the office indicates an upper limit value of the PSD used by the interfering UE to send an uplink signal on the first subcarrier;
  • the processing module is configured to determine, according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier, a PSD used to send an uplink signal on the first subcarrier, where And the PSD used by the uplink signal sent by the first subcarrier is less than or equal to the second PSD mask of the first subcarrier.
  • the acquiring module is specifically configured to perform, in the downlink direction of the first subcarrier, according to the victim user end A first PSD mask of the first subcarrier is acquired by a power spectral density of the received reference noise and an intensity of the near-end crosstalk channel.
  • the obtaining module is specifically used according to a formula:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier
  • the obtaining module is specifically used according to a formula
  • OPBOMASK(f) REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier
  • the acquiring module is specifically configured to: according to the central office end connected to the victim user end The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel acquire the first PSD mask of the first subcarrier.
  • the obtaining module is specifically used according to a formula:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f represents the first subcarrier
  • the REFTXNPSD ds (f) represents a central office connected to the victim user end.
  • the power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel
  • NEXTChannel(K next , f) 10log 10 (K next ⁇ f 3/2 )
  • K next represents the coupling coefficient of the near-end crosstalk
  • LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user, Where k1 0 represents the length of the line appliance that interferes with the user end, and ⁇ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  • a seventh possible implementation manner when the length of the line electrical device of the interfering user end is greater than or equal to the length of the line electrical appliance of the victim user end,
  • the obtaining module is specifically used according to a formula:
  • OPBOMASK(f) REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f represents the first subcarrier
  • the REFTXNPSD ds (f) represents a central office connected to the victim user end.
  • the processing module is specifically configured to be used according to the first subcarrier a first PSD mask, a second PSD mask of the first subcarrier, and a third PSD mask of the first subcarrier determine a PSD used to transmit an uplink signal on the first subcarrier, where The PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the third PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier indicates that the uplink direction of the interfering UE is initialized.
  • the receiving module is specifically configured to receive, by using an O-SIGNATURE message, Power backoff parameter.
  • a third aspect of the embodiments of the present invention provides a device for signaling, including:
  • a memory and a processor for storing code for performing a method of signaling; the processor for calling the code to perform the following operations:
  • a power backoff parameter including a range of overlapping frequencies, where the range of the overlapping frequency is a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user end;
  • the modulo determines a PSD used by the first subcarrier to transmit an uplink signal, and the PSD used by the first subcarrier to transmit an uplink signal is less than or equal to a first PSD mask of the first subcarrier.
  • a fourth aspect of the embodiments of the present invention provides a signal sending system, including:
  • At least two user lines one end of each of the subscriber lines is connected to the central office end, and the other end is connected to the user end, and the user end is a victim user or interferes with the user end;
  • the interfering client is the signal transmitting device as described in any of the possible implementations of the second aspect.
  • the method, the device and the system for transmitting a signal provided by the embodiment of the present invention receive the power backoff parameter sent by the central office end by the interference user end, where the power backoff parameter includes the range of the overlapping frequency; Obtaining a first PSD mask of the first subcarrier, where the interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used to send an uplink signal in the first subcarrier, where the uplink signal is sent in the first subcarrier
  • the PSD employed is less than or equal to the first PSD mask of the first subcarrier.
  • the first subcarrier refers to any subcarrier in the overlapping frequency range, that is, the PSD used by the interfering user to transmit the uplink signal, and considers the influence of the first subcarrier in the overlapping frequency range, and the first suburb in the overlapping frequency range.
  • the PSD used to transmit the uplink signal on the carrier is limited to the range of the first PSD mask of the first subcarrier, thereby reducing the effect of NEXT.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for signaling a signal according to the present invention
  • FIG. 2 is a schematic diagram of a first application scenario of a method for signaling a signal according to the present invention
  • 3a is a schematic diagram of an application scenario 2 of a method for signaling a signal according to the present invention
  • FIG. 3b is another schematic diagram of an application scenario 2 of a method for signaling a signal according to the present invention.
  • Embodiment 4 is a schematic structural diagram of Embodiment 1 of a device for signaling according to the present invention.
  • FIG. 5 is a schematic structural diagram of Embodiment 2 of a device for signaling according to the present invention.
  • the present invention receives the power backoff parameter sent by the central office end by the interference receiving end, and the power backoff parameter includes the range of the overlapping frequency, and the overlapping frequency ranges include multiple subcarriers.
  • the power backoff parameter includes the range of the overlapping frequency
  • the overlapping frequency ranges include multiple subcarriers.
  • the following embodiments use the A subcarrier is described as an example, and the subcarrier is referred to as a first subcarrier. It can be understood by those skilled in the art that the first subcarrier refers to any subcarrier in an overlapping frequency range.
  • the interfering UE obtains a first power spectral density (PSD) mask of the first subcarrier according to the range of the overlapping frequency, and the PSD used by the interfering UE to send the uplink signal in the first subcarrier is less than or equal to the above.
  • PSD power spectral density
  • the first PSD mask of the first subcarrier that is, the PSD used by the interfering UE to transmit the uplink signal on the first subcarrier, considers the influence of the first subcarrier in the overlapping frequency range, and is in the overlapping frequency range.
  • the PSD used to transmit the uplink signal on one subcarrier is limited to the range of the first PSD mask of the first subcarrier, thereby reducing the influence of NEXT.
  • the interference user terminal and the victim user terminal described in the foregoing embodiments of the present invention and the following embodiments refer to one user line in two or more user lines that are relatively close due to the principle of electromagnetic induction.
  • the transmission signal interferes with the transmission signal of another subscriber line, and the user terminal that connects the user line (which may also be the interference source) that generates the interference is called the interference user terminal, and will be connected to the interfered subscriber line.
  • the client is called the victim client.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for transmitting a signal according to the present invention.
  • the execution body of this embodiment is an interference user terminal, and more specifically, a user front end device (Customer Premises Equipment, hereinafter referred to as CPE), the method of this embodiment is as follows:
  • S101 The interference client receives the power backoff parameter sent by the central office.
  • the power backoff parameter includes a range of overlapping frequencies, and the range of the overlapping frequency refers to a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user end.
  • the frequency of multiple subcarriers is included in the range of overlapping frequencies.
  • the power backoff parameter is sent to the interfering UE through the O-SIGNATURE message, and accordingly, the interfering UE receives the power backoff parameter through the O-SIGNATURE message.
  • the interference UE acquires the first PSD mask of the first subcarrier according to the range of the overlapping frequency.
  • the first PSD mask is used to define a maximum value of the PSD used by the interfering UE to transmit the uplink signal on the first subcarrier.
  • the first PSD mask for acquiring the first subcarrier may have multiple acquisition manners according to the relationship between the length of the line device that interferes with the user end and the length of the line device of the victim user.
  • the present invention does not limit this.
  • the interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used to send the uplink signal on the first subcarrier.
  • the PSD used by the interfering UE to send the uplink signal on the first subcarrier is less than or equal to the first PSD mask of the first subcarrier.
  • the PSD used by the interfering UE to transmit signals on the first subcarrier must be less than or equal to the first PSD mask of the first subcarrier.
  • the power backoff parameter sent by the central office end is received by the interference user end, and the power backoff parameter includes the range of the overlapping frequency; the first PSD mask of the first subcarrier is obtained by the interference user end according to the range of the overlapping frequency.
  • the interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used for transmitting the uplink signal on the first subcarrier, where a PSD used by the first subcarrier to send an uplink signal is less than or equal to the PSD.
  • a first PSD mask of the first subcarrier is a PSD used for transmitting the uplink signal on the first subcarrier.
  • the PSD used by the user to transmit the uplink signal is considered, and the influence of the first subcarrier in the overlapping frequency range is considered, and the PSD used for transmitting the uplink signal on the first subcarrier in the overlapping range is limited to the first subcarrier.
  • the first PSD mask thereby reducing the effects of NEXT.
  • the power backoff parameter sent by the central office to the interfering UE further includes a second PSD mask of the first subcarrier, where the second PSD mask is defined by the central office according to the network management system.
  • the second PSD mask indicates that the central office indicates the upper limit of the PSD used by the interfering UE to send the uplink signal on the first subcarrier, and therefore, the interfering user is
  • the PSD used for transmitting the uplink signal on the first subcarrier satisfies the first PSD mask of the first subcarrier
  • the second PSD mask equal to or smaller than the first subcarrier is also satisfied. That is, the interfering UE determines the PSD used to transmit the uplink signal on the first subcarrier according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier.
  • the PSD used by the interfering UE to transmit the uplink signal on a certain first subcarrier is also affected by the third PSD mask of the first subcarrier, where the third PSD mask of the first subcarrier is masked.
  • the modulo represents the highest PSD initial limit used by the user in the upstream channel discovery phase during the initial channel discovery phase. That is, the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier jointly determine that the interfering UE sends an uplink signal on the first subcarrier.
  • the PSD used by the first subcarrier to transmit the uplink signal may be determined according to the following formula, and the PSD used for transmitting the uplink signal by the first subcarrier is represented by CDPSDus(f).
  • the first PSD mask is denoted by OPBOMASKus
  • the second PSD mask is denoted by PSDMASKus
  • the third PSD mask is denoted by CDMAXMASKus
  • the CDPSDus(f) is determined by the minimum value of OPBOMASKus, PSDMASKus and CDMAXMASKus as follows:
  • the first mode is: the interfering UE acquires the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel.
  • the second method is: the interference user acquires the first subcarrier according to the power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel according to the central office connected to the victim user end.
  • First PSD mask is: the interference user acquires the first subcarrier according to the power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel according to the central office connected to the victim user end.
  • the difference between the first method and the second method is that the first method involves the work of the reference noise.
  • the rate spectral density refers to the power spectral density of the reference noise received by the victim user in the downlink direction of the first subcarrier
  • the second method refers to the reference to the central office end connected to the victim user in the first subcarrier.
  • the power spectral density of the reference noise transmitted in the downstream direction.
  • FIG. 2 is a schematic diagram of a first application scenario of a signal transmission method according to the present invention;
  • the line electrical appliances of the victim end are equal in length.
  • the VTU-O to the upper VTU-R in Figure 2 is the length of the line electrical appliance of the victim end, and the VTU-O to the upper VTU-R is the length of the line electrical equipment interfering with the user end.
  • the interfering UE acquires the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel,
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier.
  • the coupling coefficient, ⁇ represents the fine-tuning factor that controls the magnitude of the near-end crosstalk effect. The default value is 0.
  • K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
  • FIG. 3b is another schematic diagram of the application scenario 2 of the signal transmission method of the present invention.
  • the VTU-O to the upper VTU-R in FIG. 3a is the length of the line appliance of the victim user, and the following VTU-O
  • the VTU-R to the above is the length of the line electrical device that interferes with the subscriber end.
  • the VTU-O to the upper VTU-R in Figure 3b is the length of the line electrical component of the victim user.
  • the VTU-O below is the interference to the VTU-R above.
  • the length of the line appliance of the client, and the manner of obtaining the first PSD of the first subcarrier, are applicable to both the scenario of FIG. 3a and the scenario of FIG. 3b.
  • OPBOMASK(f) REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier.
  • the length of the appliance; ⁇ represents the
  • REFRXNPSD ds (f) can be obtained in three ways:
  • the empirical estimation method uses a virtual noise similar to the receiving end to configure the power spectral density of the reference noise at the central office.
  • the power spectral density of the reference noise received by the victim user is generally composed of three parts, and the noise of the transmitter.
  • the white Gaussian noise on the line is generally -140dBm/Hz.
  • REFRXNPSD(f) H log(f)+TXPSD(f)-SNR(f);
  • SNR(f) represents the signal-to-noise ratio
  • Hlog(f) represents the direct channel attenuation
  • TXPSD(f) represents the transmitted power spectral density
  • the silent noise measurement method uniformly extracts N first subcarriers in the overlapping frequency range, and the victim user acquires the power spectral density of the reference noise received in the downlink direction when the N first subcarriers do not transmit signals,
  • the power spectral density of the reference noise received in the downlink direction is fed back to
  • the central office predicts each first subcarrier of the victim user in the overlapping frequency range according to the statistical rule of the power spectral density of the reference noise received in the downlink direction when the N first subcarriers do not transmit signals.
  • the central office sends the power spectral density of the reference noise received in the downlink direction of each first subcarrier to the interference user end; in order to ensure the measurement effect, when there are multiple pairs of lines, The pair of lines does not transmit signals on the N first subcarriers.
  • the length of the line electrical device that interferes with the user end is less than or equal to the length of the line electrical appliance of the victim terminal, according to the formula:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFTXNPSD ds (f) represents that the central office connected to the victim UE is in the first subcarrier
  • the power spectral density of the reference noise transmitted in the downlink direction NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel
  • NEXTChannel(K next ,f) 10log 10 (K next ⁇ f 3/2 )
  • K next represents The coupling coefficient of the near-end crosstalk
  • LOSS(kl 0 , f) represents the direct channel attenuation of the interfering user
  • k1 0 represents the length of the line appliance that interferes with the user end
  • ⁇ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  • the default value is 0.
  • K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
  • the length of the line electrical device that interferes with the user end is greater than or equal to the length of the line electrical appliance of the victim terminal, according to the formula:
  • OPBOMASK(f) REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFTXNPSD ds (f) represents that the central office connected to the victim UE is in the first subcarrier
  • the power spectral density of the reference noise transmitted in the downlink direction NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel
  • NEXTChannel(K next ,f) 10lo g10 (K next ⁇ f 3/2 )
  • K next represents The coupling coefficient of the near-end crosstalk
  • LOSS (2kl 0, REF -kl 0 , f) indicates the direct channel attenuation of the interfering user
  • Kl 0 represents the length of the line appliance that interferes with the user end
  • kl 0, REF represents the length of the line appliance referring to the victim end
  • the length of the appliance of the reference victimized end is the equivalent length of the appliance length of
  • K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
  • REFRXNPSD ds (f) can be obtained in the following two ways:
  • the empirical estimation method uses a virtual noise similar to the transmitting side to configure the power spectral density of the reference noise at the central office end;
  • SNR(f) represents the signal-to-noise ratio
  • Hlog(f) represents the direct channel attenuation
  • TXPSD(f) represents the transmitted power spectral density
  • the device in this embodiment includes a receiving module 401, an obtaining module 402, and a processing module 403.
  • the receiving module 401 is configured to use a power backoff parameter sent by the central office.
  • the power back-off parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to a range in which the uplink frequency of the interfering user end overlaps with the downlink frequency of the victim user end; and the obtaining module 402 is configured to acquire the range according to the range of the overlapping frequency.
  • the processing module 403 is configured to determine, according to the first PSD mask of the first subcarrier, a PSD used for transmitting the uplink signal in the first subcarrier, where the first subcarrier is Small PSD used to send uplink signals And a first PSD mask equal to the first subcarrier.
  • the power backoff parameter further includes a second PSD mask of the first subcarrier, where the second PSD mask indicates that the interfering UE sends an uplink signal on the first subcarrier.
  • the upper limit value of the PSD is used; the processing module 403 is specifically configured to determine, according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier, to send an uplink signal on the first subcarrier.
  • the PSD is used, wherein the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to the second PSD mask of the first subcarrier.
  • the acquiring module 402 is specifically configured to acquire the first subcarrier according to the power spectral density of the reference noise received by the victim user in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel.
  • the first PSD mask is specifically configured to acquire the first subcarrier according to the power spectral density of the reference noise received by the victim user in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel.
  • the obtaining module 402 is specifically configured according to a formula:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier.
  • the coupling coefficient, ⁇ represents a fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
  • the obtaining module 402 is specifically configured according to a formula
  • OPBOMASK(f) REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier.
  • the near-end crosstalk affects the size of the fine-tuning factor.
  • the obtaining module 402 is specifically configured to: according to a power spectral density of a reference noise and a strength of a near-end crosstalk channel, which are sent in a downlink direction of the first subcarrier according to a central office connected to the victim user end, Obtaining a first PSD mask of the first subcarrier described above.
  • the obtaining module 402 is specifically configured according to a formula:
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFTXNPSD ds (f) represents that the central office connected to the victim user end is in the first sub
  • the coupling coefficient representing the near-end crosstalk, LOSS(kl 0 , f) indicates the direct channel attenuation of the interfering user, Where k1 0 represents the length of the line appliance that interferes with the user end, and ⁇ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  • the obtaining module 402 is specifically configured according to a formula:
  • OPBOMASK(f) REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
  • the OPBOMASK(f) represents a first PSD mask of the first subcarrier
  • f denotes the first subcarrier
  • the REFTXNPSD ds (f) represents that the central office connected to the victim user end is in the first sub
  • the power spectral density of the reference noise transmitted in the downlink direction of the carrier, NEXTChannel(K next ,f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next ,f) 10log 10 (K next ⁇ f 3/2 ), K next
  • the coupling coefficient representing the near-end crosstalk, LOSS (2kl 0, REF -kl 0 , f) indicates the direct channel attenuation of the interfering user, Kl 0 represents the length of the line appliance that interferes with the user end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victimized end is the equivalent length of the appliance length of at least one victim user
  • the processing module 403 is specifically configured to determine, according to the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier.
  • a PSD used by the first subcarrier to transmit an uplink signal where the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to a third PSD mask of the first subcarrier, and the first subcarrier is used.
  • the third PSD mask represents the highest PSD initial limit used by the interfering user upstream direction in the initial channel discovery phase.
  • the receiving module 401 is specifically configured to receive the power backoff parameter by using an O-SIGNATURE message.
  • FIG. 5 is a schematic structural diagram of Embodiment 2 of a device for signaling according to the present invention.
  • the device in this embodiment includes a memory 501 and a processor 502, wherein the memory 501 is configured to store a code for performing a signal transmission method.
  • the above processor 502 is used to call the above code, and performs the following operations:
  • the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user terminal; And obtaining, by the range of the frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to limit a maximum value of the PSD used by the interference UE to send an uplink signal on the first subcarrier, where the foregoing One subcarrier is any subcarrier in the range of the overlapping frequency; determining, according to the first PSD mask of the first subcarrier, a PSD used for transmitting an uplink signal on the first subcarrier, where the first subcarrier is The PSD used to transmit the uplink signal is less than or equal to the first PSD mask of the first subcarrier.
  • the present invention also provides an embodiment of a signal transmission system, as shown in FIG. 2, FIG. 3a and FIG. 3b, comprising: at least two subscriber lines (only two shown in FIG. 2, FIG. 3a and FIG. 3b), each of which One end of the subscriber line is connected to the central office end, and the other end is connected to the user end, and the user end is a victim user terminal or an interference user terminal; the interference user terminal is a signal transmitting device as shown in FIG. 4 or FIG. The function of the signal transmitting apparatus shown in Fig. 4 or Fig. 5.
  • the upper left end of the subscriber line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user; in Figure 3a The upper left end of the subscriber line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user; in Figure 3b, the upper user The left end of the line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

Provided are a signal sending method, apparatus and system. An interference user end receives a power backoff parameter sent by a central office end, wherein the power backoff parameter comprises the range of an overlapping frequency; and since the interference user end acquires a first PSD mask of a first sub-carrier according to the range of the overlapping frequency, the interference user end determines a PSD used for sending an uplink signal on the first sub-carrier according to the first PSD mask of the first sub-carrier, wherein the PSD used for sending the uplink signal on the first sub-carrier is less than or equal to the first PSD mask of the first sub-carrier. Thus, the influence of NEXT is reduced.

Description

信号发送的方法、装置和系统Signal transmitting method, device and system 技术领域Technical field
本发明实施例涉及通信技术，尤其涉及一种信号发送的方法、装置和系统。Embodiments of the present invention relate to communication technologies, and in particular, to a method, an apparatus, and a system for signaling.
背景技术Background technique
串音是电话网络系统中最常见的一种现象，串音是指由于电磁感应原理，同一个数字用户线接入复用器(Digital Subscriber Line Access Multiplexer，以下简称：DSLAM)的多路信号之间相互产生干扰，使接收端接收到其他线路的信号。Crosstalk is the most common phenomenon in telephone network systems. Crosstalk refers to the multi-channel signal of the same Digital Subscriber Line Access Multiplexer (DSLAM) due to the principle of electromagnetic induction. Interference occurs between each other, so that the receiving end receives signals from other lines.
现有技术中，为了解决串音的问题，上行信道和下行信道采用频分复用的技术，即，上行信号的传输和下行信号的传输采用不同的频率，在这种场景下，近端串音(Near-end Crosstalk，以下简称：NEXT)对系统的性能影响可以忽略不计，远端串音(Far-end Crosstalk，以下简称：FEXT)使用矢量化(Vectoring)技术在中心局端进行联合收发来抵消，其中，NEXT是指接收端接收到同一侧的发送端发送的信号，FEXT是指接收端接收到对端的其他线路的信号。In the prior art, in order to solve the problem of crosstalk, the uplink channel and the downlink channel adopt a frequency division multiplexing technology, that is, the transmission of the uplink signal and the transmission of the downlink signal use different frequencies. In this scenario, the near-end string Near-end crosstalk (NEXT) has negligible impact on the performance of the system. Far-end crosstalk (FEXT) uses Vectoring technology to perform joint transmission and reception at the central office. To cancel, where NEXT refers to the signal sent by the receiving end of the receiving side, and FEXT refers to the signal received by the receiving end of other lines of the opposite end.
然而，由于数字用户线路(Digital Subscriber Line，以下简称：DSL)频谱资源有限，为了提高频谱利用率，可以采用同频双工的通讯技术，即上下行采用相同的频率范围进行信号传输，采用这种方式，在重叠频率上NEXT影响严重，而无法采用现有技术的方法降低NEXT的影响。However, due to the limited spectrum resources of the Digital Subscriber Line (DSL), in order to improve the spectrum utilization, the same frequency duplex communication technology can be used, that is, the uplink and downlink use the same frequency range for signal transmission. In this way, the NEXT effect is severe on the overlapping frequency, and the prior art method cannot be used to reduce the impact of NEXT.
发明内容Summary of the invention
本发明实施例提供一种信号发送的方法、装置和系统，以降低NEXT的影响。Embodiments of the present invention provide a method, apparatus, and system for signaling to reduce the impact of NEXT.
本发明实施例第一方面提供一种信号发送的方法，包括：A first aspect of the embodiments of the present invention provides a method for signaling, including:
干扰用户端接收中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频 率与受扰用户端的下行频率重叠的范围；The interfering user receives the power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, and the range of the overlapping frequency refers to an uplink frequency of the interfering user end. The range in which the rate overlaps with the downlink frequency of the victim user;
所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；Acquiring, by the interfering UE, a first power spectral density PSD mask of the first subcarrier according to the range of the overlapping frequency, where the first PSD mask is used to define that the interfering UE sends on the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
所述干扰用户端根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。Determining, by the interfering UE, a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier, where the PSD used by the first subcarrier to send an uplink signal Less than or equal to the first PSD mask of the first subcarrier.
结合第一方面，在第一方面的第一种可能的实现方式中，所述功率回退参数中还包括所述第一子载波的第二PSD掩模，所述第二PSD掩模为中心局指示所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的上限值；With reference to the first aspect, in a first possible implementation manner of the first aspect, the power back-off parameter further includes a second PSD mask of the first sub-carrier, where the second PSD mask is centered The office indicates an upper limit value of the PSD used by the interfering UE to send an uplink signal on the first subcarrier;
所述干扰用户端根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，包括：Determining, by the interfering UE, the PSD used to send the uplink signal on the first subcarrier according to the first PSD mask of the first subcarrier, including:
所述干扰用户端根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第二PSD掩模。Determining, by the interfering UE, a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier and a second PSD mask of the first subcarrier, where The PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the second PSD mask of the first subcarrier.
结合第一方面或第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一PSD掩模，包括：With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the interfering user end acquires a first PSD mask of the first subcarrier according to the range of the overlapping frequency ,include:
所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel mold.
结合第一方面的第二种可能的实现方式，在第三种可能的实现方式中，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度相等时，With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, when the line electrical length of the interfering user end is equal to the length of the line electrical appliance of the victim user end,
所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括： Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel Module, including:
根据公式According to the formula
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]获取所述第一子载波的第一PSD掩模，OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)−Δ+3.5[dBm/Hz] acquiring the first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, Δ represents the fine-tuning factor that controls the magnitude of the influence of the near-end crosstalk.
结合第一方面的第二种可能的实现方式，在第四种可能的实现方式中，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度不相等时，With the second possible implementation of the first aspect, in a fourth possible implementation, when the length of the line electrical device of the interfering user end and the length of the line electrical device of the victim user end are not equal,
所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel Module, including:
根据公式According to the formula
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
Figure PCTCN2014092579-appb-000001
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents Coupling coefficient of near-end crosstalk, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
Figure PCTCN2014092579-appb-000001
Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
结合第一方面或第一方面的第二种可能的实现方式，在第五种可能的实现方式中，所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，包括：With reference to the first aspect or the second possible implementation manner of the first aspect, in a fifth possible implementation, the interfering user end acquires a first power spectral density of the first subcarrier according to the range of the overlapping frequency PSD mask, including:
所述干扰用户端根据与所述受扰用户端连接的中心局端在所述第一 子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。The interfering UE is in the first according to a central office connected to the victim user end The power spectral density of the reference noise transmitted in the downlink direction of the subcarrier and the strength of the near-end crosstalk channel acquire the first PSD mask of the first subcarrier.
结合第一方面的第五种可能的实现方式，在第六种可能的实现方式中，当所述干扰用户端的线路电器长度小于等于所述受扰用户端的线路电器长度时，With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, when the length of the line electrical device of the interfering user end is less than or equal to the length of the line electrical appliance of the victim user end,
所述干扰用户端根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Acquiring the first sub-portion according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office connected to the victim user end in the downlink direction of the first subcarrier The first PSD mask of the carrier includes:
根据公式：According to the formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000002
其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000002
Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
结合第一方面的第五种可能的实现方式，在第七种可能的实现方式中，当所述干扰用户端的线路电器长度大于等于所述受扰用户端的线路电器长度时，With reference to the fifth possible implementation manner of the first aspect, in a seventh possible implementation, when the length of the line electrical device of the interfering user end is greater than or equal to the length of the line electrical appliance of the victim user end,
所述干扰用户端根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Acquiring the first sub-portion according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office connected to the victim user end in the downlink direction of the first subcarrier The first PSD mask of the carrier includes:
根据公式：According to the formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度， NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(2kl0,REF-kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000003
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (2kl 0, REF -kl 0 , f) represents the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000003
 Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
结合第一方面的第一种至第七种可能的实现方式中任一种可能的实现方式，在第八种可能的实现方式中，所述干扰用户端根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，包括：With reference to any one of the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation, the interfering user end is configured according to the first subcarrier The PSD mask and the second PSD mask of the first subcarrier determine a PSD used to transmit an uplink signal on the first subcarrier, including:
所述干扰用户端根据所述第一子载波的第一PSD掩模、所述第一子载波的第二PSD掩模和所述第一子载波的第三PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第三PSD掩模，所述第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。The interfering UE determines the first in the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier. a PSD used by the subcarrier to transmit an uplink signal, where the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to a third PSD mask of the first subcarrier, where the first subcarrier is The third PSD mask represents the highest PSD initial limit used by the interfering user upstream direction in the initial channel discovery phase.
结合第一方面的第一种至第八种可能的实现方式中任一种可能的实现方式，在第九种可能的实现方式中，所述干扰用户端接收中心局端发送的功率回退参数，包括：With reference to any one of the first to the eighth possible implementation manners of the first aspect, in the ninth possible implementation manner, the interfering user end receives the power backoff parameter sent by the central office end ,include:
所述干扰用户端通过O-SIGNATURE消息接收所述功率回退参数。The interfering UE receives the power backoff parameter through an O-SIGNATURE message.
本发明实施例第二方面提供一种信号发送的装置，包括：A second aspect of the embodiments of the present invention provides a device for signaling, including:
接收模块，用于中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；a receiving module, configured to use a power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to an uplink frequency of the interference user end and a downlink frequency of the victim user end The extent of overlap;
获取模块，用于根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；And an acquiring module, configured to acquire, according to the range of the overlapping frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to define that the interference UE sends the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
处理模块，用于根据所述第一子载波的第一PSD掩模确定在所述第一 子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。a processing module, configured to determine, according to the first PSD mask of the first subcarrier, the first The PSD used by the subcarrier to transmit the uplink signal, and the PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the first PSD mask of the first subcarrier.
结合第二方面，在第二方面的第一种可能的实现方式中，所述功率回退参数中还包括所述第一子载波的第二PSD掩模，所述第二PSD掩模为中心局指示所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的上限值；With reference to the second aspect, in a first possible implementation manner of the second aspect, the power backoff parameter further includes a second PSD mask of the first subcarrier, where the second PSD mask is centered The office indicates an upper limit value of the PSD used by the interfering UE to send an uplink signal on the first subcarrier;
所述处理模块具体用于根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第二PSD掩模。The processing module is configured to determine, according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier, a PSD used to send an uplink signal on the first subcarrier, where And the PSD used by the uplink signal sent by the first subcarrier is less than or equal to the second PSD mask of the first subcarrier.
结合第二方面或第二方面的第一种可能的实现方式，在第二种可能的实现方式中，所述获取模块具体用于根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation, the acquiring module is specifically configured to perform, in the downlink direction of the first subcarrier, according to the victim user end A first PSD mask of the first subcarrier is acquired by a power spectral density of the received reference noise and an intensity of the near-end crosstalk channel.
结合第二方面的第二种可能的实现方式，在第三种可能的实现方式中，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度相等时，With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner, when the length of the line electrical device of the interfering user end is equal to the length of the line electrical device of the victim user end,
所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, Δ represents the fine-tuning factor that controls the magnitude of the influence of the near-end crosstalk.
结合第二方面的第二种可能的实现方式，在第四种可能的实现方式中，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度不相等时，With the second possible implementation of the second aspect, in a fourth possible implementation, when the length of the line electrical device of the interfering user end and the length of the line electrical device of the victim user end are not equal,
所述获取模块具体用于根据公式The obtaining module is specifically used according to a formula
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)
-Δ+3.5[dBm/Hz] -Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
Figure PCTCN2014092579-appb-000004
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents Coupling coefficient of near-end crosstalk, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
Figure PCTCN2014092579-appb-000004
Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
结合第二方面或第二方面的第二种可能的实现方式，在第五种可能的实现方式中，所述获取模块具体用于根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。With reference to the second aspect, or the second possible implementation of the second aspect, in a fifth possible implementation, the acquiring module is specifically configured to: according to the central office end connected to the victim user end The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel acquire the first PSD mask of the first subcarrier.
结合第二方面的第五种可能的实现方式，在第六种可能的实现方式中，当所述干扰用户端的线路电器长度小于等于所述受扰用户端的线路电器长度时，With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, when the length of the line electrical device of the interfering user end is less than or equal to the length of the line electrical appliance of the victim user end,
所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000005
其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000005
Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
结合第二方面的第五种可能的实现方式，在第七种可能的实现方式中，当所述干扰用户端的线路电器长度大于等于所述受扰用户端的线路电器长度时， With reference to the fifth possible implementation manner of the second aspect, in a seventh possible implementation manner, when the length of the line electrical device of the interfering user end is greater than or equal to the length of the line electrical appliance of the victim user end,
所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(2kl0，REF-kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000006
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (2kl 0, REF -kl 0 , f) represents the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000006
 Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
结合第二方面的第一种至第七种可能的实现方式中任一种可能的实现方式，在第八种可能的实现方式中，所述处理模块具体用于根据所述第一子载波的第一PSD掩模、所述第一子载波的第二PSD掩模和所述第一子载波的第三PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第三PSD掩模，所述第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。With reference to any one of the possible implementations of the first to the seventh possible implementations of the second aspect, in an eighth possible implementation, the processing module is specifically configured to be used according to the first subcarrier a first PSD mask, a second PSD mask of the first subcarrier, and a third PSD mask of the first subcarrier determine a PSD used to transmit an uplink signal on the first subcarrier, where The PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the third PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier indicates that the uplink direction of the interfering UE is initialized. The highest PSD initial limit used in the channel discovery phase.
结合第二方面的第一种至第八种可能的实现方式中任一种可能的实现方式，在第九种可能的实现方式中，所述接收模块具体用于通过O-SIGNATURE消息接收所述功率回退参数。With reference to any one of the possible implementations of the first to the eighth possible implementations of the second aspect, in a ninth possible implementation, the receiving module is specifically configured to receive, by using an O-SIGNATURE message, Power backoff parameter.
本发明实施例第三方面提供一种信号发送的装置，包括：A third aspect of the embodiments of the present invention provides a device for signaling, including:
存储器和处理器，所述存储器用于存储执行信号发送的方法的代码；所述处理器用于调用所述代码，执行如下操作：a memory and a processor for storing code for performing a method of signaling; the processor for calling the code to perform the following operations:
接收中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端 在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。And receiving, by the central office, a power backoff parameter, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency is a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user end; Obtaining a first power spectral density PSD mask of the first subcarrier according to the range of the overlapping frequency, where the first PSD mask is used to define the interference client a maximum value of a PSD used by the first subcarrier to transmit an uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency; and a first PSD mask according to the first subcarrier The modulo determines a PSD used by the first subcarrier to transmit an uplink signal, and the PSD used by the first subcarrier to transmit an uplink signal is less than or equal to a first PSD mask of the first subcarrier.
本发明实施例第四方面提供一种信号发送系统，包括：A fourth aspect of the embodiments of the present invention provides a signal sending system, including:
至少两条用户线路，每条所述用户线路的一端与中心局端连接，另一端与用户端连接，所述用户端为受扰用户端或者干扰用户端；At least two user lines, one end of each of the subscriber lines is connected to the central office end, and the other end is connected to the user end, and the user end is a victim user or interferes with the user end;
所述干扰用户端为如第二方面的任一种可能的实现方式中的所述的信号发送装置。The interfering client is the signal transmitting device as described in any of the possible implementations of the second aspect.
本发明实施例提供的信号发送的方法、装置和系统，通过干扰用户端接收中心局端发送的功率回退参数，功率回退参数中包括重叠频率的范围；由于干扰用户端根据重叠频率的范围获取第一子载波的第一PSD掩模，干扰用户端根据第一子载波的第一PSD掩模确定在第一子载波发送上行信号所采用的PSD，其中，在第一子载波发送上行信号所采用的PSD小于等于第一子载波的第一PSD掩模。第一子载波是指重叠频率范围的任一子载波，也就是干扰用户发送上行信号所采用的PSD，考虑了重叠频率范围内的第一子载波的影响，在重叠频率范围内的第一子载波上发送上行信号所采用的PSD限定在第一子载波的第一PSD掩模的范围内，从而，降低NEXT的影响。The method, the device and the system for transmitting a signal provided by the embodiment of the present invention receive the power backoff parameter sent by the central office end by the interference user end, where the power backoff parameter includes the range of the overlapping frequency; Obtaining a first PSD mask of the first subcarrier, where the interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used to send an uplink signal in the first subcarrier, where the uplink signal is sent in the first subcarrier The PSD employed is less than or equal to the first PSD mask of the first subcarrier. The first subcarrier refers to any subcarrier in the overlapping frequency range, that is, the PSD used by the interfering user to transmit the uplink signal, and considers the influence of the first subcarrier in the overlapping frequency range, and the first suburb in the overlapping frequency range. The PSD used to transmit the uplink signal on the carrier is limited to the range of the first PSD mask of the first subcarrier, thereby reducing the effect of NEXT.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.
图1为本发明信号发送的方法实施例一的流程示意图；1 is a schematic flowchart of Embodiment 1 of a method for signaling a signal according to the present invention;
图2为本发明信号发送的方法第一种应用场景示意图；2 is a schematic diagram of a first application scenario of a method for signaling a signal according to the present invention;
图3a为本发明信号发送的方法应用场景2示意图；3a is a schematic diagram of an application scenario 2 of a method for signaling a signal according to the present invention;
图3b为本发明信号发送的方法应用场景2的另一示意图； FIG. 3b is another schematic diagram of an application scenario 2 of a method for signaling a signal according to the present invention;
图4为本发明信号发送的装置实施例一的结构示意图；4 is a schematic structural diagram of Embodiment 1 of a device for signaling according to the present invention;
图5为本发明信号发送的装置实施例二的结构示意图。FIG. 5 is a schematic structural diagram of Embodiment 2 of a device for signaling according to the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
本发明通过干扰用户端接收中心局端发送的功率回退参数，功率回退参数中包含重叠频率的范围，重叠频率的范围内包含多个子载波，为了描述方便，下面各实施例中以其中的一个子载波为例进行描述，称该子载波为第一子载波，本领域技术人员完全可以理解，该第一子载波是指重叠频率范围内的任一子载波。干扰用户端根据重叠频率的范围获取第一子载波的第一功率谱密度(Power spectral density，以下简称：PSD)掩模，干扰用户端在第一子载波发送上行信号所采用的PSD小于等于上述第一子载波的第一PSD掩模，也就是干扰用户端在第一子载波发送上行信号所采用的PSD，考虑了重叠频率范围内的第一子载波的影响，在重叠频率范围内的第一子载波上发送上行信号所采用的PSD限定在第一子载波的第一PSD掩模的范围内，从而，降低NEXT的影响。The present invention receives the power backoff parameter sent by the central office end by the interference receiving end, and the power backoff parameter includes the range of the overlapping frequency, and the overlapping frequency ranges include multiple subcarriers. For the convenience of description, the following embodiments use the A subcarrier is described as an example, and the subcarrier is referred to as a first subcarrier. It can be understood by those skilled in the art that the first subcarrier refers to any subcarrier in an overlapping frequency range. The interfering UE obtains a first power spectral density (PSD) mask of the first subcarrier according to the range of the overlapping frequency, and the PSD used by the interfering UE to send the uplink signal in the first subcarrier is less than or equal to the above. The first PSD mask of the first subcarrier, that is, the PSD used by the interfering UE to transmit the uplink signal on the first subcarrier, considers the influence of the first subcarrier in the overlapping frequency range, and is in the overlapping frequency range. The PSD used to transmit the uplink signal on one subcarrier is limited to the range of the first PSD mask of the first subcarrier, thereby reducing the influence of NEXT.
需要说明的是，本发明上述及下述各实施例中所描述的干扰用户端和受扰用户端，是指由于电磁感应原理，两根或者多根距离较近的用户线路中一根用户线路的传输信号对另一根用户线路的传输信号产生干扰的现象，将与产生干扰的用户线路(也可以成为干扰源)连接的用户端称为干扰用户端，将与被干扰的用户线路连接的用户端称为受扰用户端。It should be noted that the interference user terminal and the victim user terminal described in the foregoing embodiments of the present invention and the following embodiments refer to one user line in two or more user lines that are relatively close due to the principle of electromagnetic induction. The transmission signal interferes with the transmission signal of another subscriber line, and the user terminal that connects the user line (which may also be the interference source) that generates the interference is called the interference user terminal, and will be connected to the interfered subscriber line. The client is called the victim client.
下面以具体地实施例对本发明的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。The technical solutions of the present invention will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.
图1为本发明信号发送的方法实施例一的流程示意图，如图1所示，本实施例的执行主体是干扰用户端，更具体地是指用户前端装置(Customer  Premises Equipment，以下简称：CPE)，本实施例的方法如下：1 is a schematic flowchart of Embodiment 1 of a method for transmitting a signal according to the present invention. As shown in FIG. 1, the execution body of this embodiment is an interference user terminal, and more specifically, a user front end device (Customer Premises Equipment, hereinafter referred to as CPE), the method of this embodiment is as follows:
S101：干扰用户端接收中心局端发送的功率回退参数。S101: The interference client receives the power backoff parameter sent by the central office.
其中，功率回退参数中包括重叠频率的范围，重叠频率的范围是指干扰用户端的上行频率与受扰用户端的下行频率重叠的范围。The power backoff parameter includes a range of overlapping frequencies, and the range of the overlapping frequency refers to a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user end.
重叠频率的范围内包含多个子载波的频点。The frequency of multiple subcarriers is included in the range of overlapping frequencies.
通常，在中心局端初始化开始时，通过O-SIGNATURE消息向干扰用户端发送功率回退参数，相应地，干扰用户端通过O-SIGNATURE消息接收功率回退参数。Generally, when the central office initialization starts, the power backoff parameter is sent to the interfering UE through the O-SIGNATURE message, and accordingly, the interfering UE receives the power backoff parameter through the O-SIGNATURE message.
S102：干扰用户端根据重叠频率的范围获取第一子载波的第一PSD掩模。S102: The interference UE acquires the first PSD mask of the first subcarrier according to the range of the overlapping frequency.
其中，第一PSD掩模用于限定干扰用户端在第一子载波发送上行信号所采用的PSD的最大值。The first PSD mask is used to define a maximum value of the PSD used by the interfering UE to transmit the uplink signal on the first subcarrier.
根据干扰用户端的线路电器长度和受扰用户端的线路电器长度的关系，获取第一子载波的第一PSD掩模可以有多种获取方式，本发明对此不作限制。The first PSD mask for acquiring the first subcarrier may have multiple acquisition manners according to the relationship between the length of the line device that interferes with the user end and the length of the line device of the victim user. The present invention does not limit this.
S103：干扰用户端根据第一子载波的第一PSD掩模确定在上述第一子载波发送上行信号所采用的PSD。S103: The interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used to send the uplink signal on the first subcarrier.
其中，干扰用户端在上述第一子载波发送上行信号所采用的PSD小于等于上述第一子载波的第一PSD掩模。The PSD used by the interfering UE to send the uplink signal on the first subcarrier is less than or equal to the first PSD mask of the first subcarrier.
通常，在初始化和传送数据时间期间，干扰用户端在第一子载波发送信号所采用的PSD必须小于等于该第一子载波的第一PSD掩模。Generally, during the initialization and transmission of data time, the PSD used by the interfering UE to transmit signals on the first subcarrier must be less than or equal to the first PSD mask of the first subcarrier.
本实施例中，通过干扰用户端接收中心局端发送的功率回退参数，功率回退参数中包括重叠频率的范围；由于干扰用户端根据重叠频率的范围获取第一子载波的第一PSD掩模；干扰用户端根据第一子载波的第一PSD掩模确定在该第一子载波上发送上行信号所采用的PSD，其中，在该第一子载波发送上行信号所采用的PSD小于等于该第一子载波的第一PSD掩模。也就是干扰用户发送上行信号所采用的PSD，考虑了重叠频率范围内的第一子载波的影响，在重叠范围内的第一子载波上发送上行信号所采用的PSD限定在第一子载波的第一PSD掩模的范围内，从而，降低NEXT的影响。 In this embodiment, the power backoff parameter sent by the central office end is received by the interference user end, and the power backoff parameter includes the range of the overlapping frequency; the first PSD mask of the first subcarrier is obtained by the interference user end according to the range of the overlapping frequency. And the interfering UE determines, according to the first PSD mask of the first subcarrier, a PSD used for transmitting the uplink signal on the first subcarrier, where a PSD used by the first subcarrier to send an uplink signal is less than or equal to the PSD. A first PSD mask of the first subcarrier. That is, the PSD used by the user to transmit the uplink signal is considered, and the influence of the first subcarrier in the overlapping frequency range is considered, and the PSD used for transmitting the uplink signal on the first subcarrier in the overlapping range is limited to the first subcarrier. Within the scope of the first PSD mask, thereby reducing the effects of NEXT.
在上述实施例中，中心局端向干扰用户端发送的功率回退参数中，还包括上述第一子载波的第二PSD掩模，第二PSD掩模是中心局端根据网络管理系统定义的配置计算的干扰用户端的发送PSD掩模，换句话，第二PSD掩模为中心局指示干扰用户端在第一子载波发送上行信号所采用的PSD的上限值，因此，干扰用户端在第一子载波上发送上行信号所采用的PSD满足小于等于该第一子载波的第一PSD掩模时，还要满足小于等于该第一子载波的第二PSD掩模。即，干扰用户端根据第一子载波的第一PSD掩模和第一子载波的第二PSD掩模共同确定在该第一子载波发送上行信号所采用的PSD。In the foregoing embodiment, the power backoff parameter sent by the central office to the interfering UE further includes a second PSD mask of the first subcarrier, where the second PSD mask is defined by the central office according to the network management system. Configuring a calculated transmit PSD mask of the interfering UE. In other words, the second PSD mask indicates that the central office indicates the upper limit of the PSD used by the interfering UE to send the uplink signal on the first subcarrier, and therefore, the interfering user is When the PSD used for transmitting the uplink signal on the first subcarrier satisfies the first PSD mask of the first subcarrier, the second PSD mask equal to or smaller than the first subcarrier is also satisfied. That is, the interfering UE determines the PSD used to transmit the uplink signal on the first subcarrier according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier.
在上述实施例中，干扰用户端在某个第一子载波发送上行信号所采用的PSD还受到该第一子载波的第三PSD掩模的影响，其中，第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。也就是，根据第一子载波的第一PSD掩模、第一子载波的第二PSD掩模和第一子载波的第三PSD掩模共同确定干扰用户端在该第一子载波发送上行信号所采用的PSD。In the above embodiment, the PSD used by the interfering UE to transmit the uplink signal on a certain first subcarrier is also affected by the third PSD mask of the first subcarrier, where the third PSD mask of the first subcarrier is masked. The modulo represents the highest PSD initial limit used by the user in the upstream channel discovery phase during the initial channel discovery phase. That is, the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier jointly determine that the interfering UE sends an uplink signal on the first subcarrier. The PSD used.
具体地，可以根据如下公式确定第一子载波发送上行信号所采用的PSD，将第一子载波发送上行信号所采用的PSD用CDPSDus(f)表示。Specifically, the PSD used by the first subcarrier to transmit the uplink signal may be determined according to the following formula, and the PSD used for transmitting the uplink signal by the first subcarrier is represented by CDPSDus(f).
第一PSD掩模用OPBOMASKus表示，第二PSD掩模用PSDMASKus表示，第三PSD掩模用CDMAXMASKus表示，CDPSDus(f)由OPBOMASKus、PSDMASKus和CDMAXMASKus中最小值决定，如下所示：The first PSD mask is denoted by OPBOMASKus, the second PSD mask is denoted by PSDMASKus, the third PSD mask is denoted by CDMAXMASKus, and the CDPSDus(f) is determined by the minimum value of OPBOMASKus, PSDMASKus and CDMAXMASKus as follows:
Figure PCTCN2014092579-appb-000007
Figure PCTCN2014092579-appb-000007
干扰用户端根据重叠频率的范围获取第一PSD掩模的方式，包括但不限于下述两种方式：Interfering with the manner in which the UE obtains the first PSD mask according to the range of overlapping frequencies, including but not limited to the following two modes:
第一种方式为：干扰用户端根据受扰用户端在第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取第一子载波的第一PSD掩模。The first mode is: the interfering UE acquires the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel.
第二种方式为：干扰用户端根据与受扰用户端连接的中心局端在第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取第一子载波的第一PSD掩模。The second method is: the interference user acquires the first subcarrier according to the power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel according to the central office connected to the victim user end. First PSD mask.
第一种方式与第二种方式的区别是，第一种方式涉及的参考噪声的功 率谱密度是指受扰用户端在第一子载波下行方向接收的参考噪声的功率谱密度，而第二种方式涉及的参考是指与受扰用户端连接的中心局端在第一子载波下行方向发送的参考噪声的功率谱密度。The difference between the first method and the second method is that the first method involves the work of the reference noise. The rate spectral density refers to the power spectral density of the reference noise received by the victim user in the downlink direction of the first subcarrier, and the second method refers to the reference to the central office end connected to the victim user in the first subcarrier. The power spectral density of the reference noise transmitted in the downstream direction.
针对第一种方式，分为下述场景1和场景2，场景1如图2所示，图2为本发明信号发送的方法第一种应用场景示意图；场景1中干扰用户端的线路电器长度和受扰用户端的线路电器长度相等，图2中上面的VTU-O到上面的VTU-R是受扰用户端的线路电器长度，下面的VTU-O到上面的VTU-R是干扰用户端的线路电器长度，具体地，干扰用户端根据受扰用户端在第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取第一子载波的第一PSD掩模，For the first mode, it is divided into the following scenario 1 and scenario 2, and scenario 1 is as shown in FIG. 2. FIG. 2 is a schematic diagram of a first application scenario of a signal transmission method according to the present invention; The line electrical appliances of the victim end are equal in length. The VTU-O to the upper VTU-R in Figure 2 is the length of the line electrical appliance of the victim end, and the VTU-O to the upper VTU-R is the length of the line electrical equipment interfering with the user end. Specifically, the interfering UE acquires the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel,
根据公式：According to the formula:
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]获取上述第一子载波的第一PSD掩模，OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)−Δ+3.5[dBm/Hz] acquiring the first PSD mask of the first subcarrier described above,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFRXNPSDds(f)表示受扰用户端在上述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子，默认值为0。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier. The power spectral density of the noise, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents the near-end crosstalk The coupling coefficient, Δ, represents the fine-tuning factor that controls the magnitude of the near-end crosstalk effect. The default value is 0.
需要说明的是，Knext也可以用户根据线缆实际的NEXT串扰强度自定义。It should be noted that K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
场景2是指干扰用户端的线路电长度和受扰用户端的线路电长度不相等的，包括图3a和图3b两种情况，如图3a和图3b所示，图3a为本发明信号发送的方法应用场景2示意图，图3b为本发明信号发送的方法应用场景2的另一示意图，图3a中上面的VTU-O到上面的VTU-R是受扰用户端的线路电器长度，下面的VTU-O到上面的VTU-R是干扰用户端的线路电器长度，图3b中上面的VTU-O到上面的VTU-R是受扰用户端的线路电器长度，下面的VTU-O到上面的VTU-R是干扰用户端的线路电器长度，以下获取第一子载波的第一PSD的方式，对于图3a的场景和图3b的场景都适用。Scenario 2 refers to the difference between the line electrical length of the interfering user terminal and the line electrical length of the victim user end, including the two cases of FIG. 3a and FIG. 3b, as shown in FIG. 3a and FIG. 3b, and FIG. 3a is a signal transmitting method of the present invention. FIG. 3b is another schematic diagram of the application scenario 2 of the signal transmission method of the present invention. The VTU-O to the upper VTU-R in FIG. 3a is the length of the line appliance of the victim user, and the following VTU-O The VTU-R to the above is the length of the line electrical device that interferes with the subscriber end. The VTU-O to the upper VTU-R in Figure 3b is the length of the line electrical component of the victim user. The VTU-O below is the interference to the VTU-R above. The length of the line appliance of the client, and the manner of obtaining the first PSD of the first subcarrier, are applicable to both the scenario of FIG. 3a and the scenario of FIG. 3b.
具体地，根据公式 Specifically, according to the formula
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFRXNPSDds(f)表示受扰用户端在上述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
Figure PCTCN2014092579-appb-000008
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，上述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，具体地，参考受扰用户端的电器长度可以是多个受扰用户端的电器长度的最小值，或者，多个受扰用户端的电器长度的平均值，或者，根据经验指定的多个受扰用户端的其中一个的电器长度；Δ表示控制近端串音影响大小的微调因子，默认值为0。需要说明的是，Knext也可以用户根据线缆实际的NEXT串扰强度自定义。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier. The power spectral density of the noise, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents the near-end crosstalk Coupling coefficient, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
Figure PCTCN2014092579-appb-000008
Kl 0 represents the length of the line appliance that interferes with the user end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victimized end is the equivalent length of the appliance length of the at least one victim end, specifically, The length of the appliance of the referenced victim end may be the minimum value of the length of the appliance of the plurality of victim terminals, or the average of the lengths of the appliances of the plurality of victim terminals, or one of the plurality of victim terminals specified by experience. The length of the appliance; Δ represents the trimming factor that controls the magnitude of the near-end crosstalk. The default value is 0. It should be noted that K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
在图2或图3a或图3b所示的场景中，REFRXNPSDds(f)可以通过以下三种方式获得：In the scenario shown in Figure 2 or Figure 3a or Figure 3b, REFRXNPSD ds (f) can be obtained in three ways:
1、经验估计法，采用类似接收端虚拟噪声的方式在中心局端配置参考噪声的功率谱密度，其中，受扰用户端接收的参考噪声的功率谱密度一般由三部分组成，发送器的噪声、线路上高斯白噪声、接收器的噪声，其中发送器的噪声和接收器的噪声是由模拟器件决定的，通过实验室测试可以获取，线路上高斯白噪声普遍为-140dBm/Hz。1. The empirical estimation method uses a virtual noise similar to the receiving end to configure the power spectral density of the reference noise at the central office. The power spectral density of the reference noise received by the victim user is generally composed of three parts, and the noise of the transmitter. Gaussian white noise on the line, receiver noise, where the noise of the transmitter and the noise of the receiver are determined by the analog device. It can be obtained through laboratory tests. The white Gaussian noise on the line is generally -140dBm/Hz.
2、参数估计法，中心局端获取SNR(f),Hlog(f),TXPSD(f),根据下列公式计算可得：2. Parameter estimation method, the central office obtains SNR(f), Hlog(f), TXPSD(f), which can be calculated according to the following formula:
REFRXNPSD(f)＝H log(f)+TXPSD(f)-SNR(f)；REFRXNPSD(f)=H log(f)+TXPSD(f)-SNR(f);
其中，SNR(f)表示信噪比，Hlog(f)表示直接信道衰减，TXPSD(f)表示发送的功率谱密度。Where SNR(f) represents the signal-to-noise ratio, Hlog(f) represents the direct channel attenuation, and TXPSD(f) represents the transmitted power spectral density.
3、静默噪声测量法，在重叠频率范围内均匀抽取N个第一子载波，受扰用户端获取在上述N个第一子载波不发送信号时下行方向接收的参考噪声的功率谱密度，将下行方向接收的参考噪声的功率谱密度反馈给中 心局端，中心局端根据上述N个第一子载波不发送信号时下行方向接收的参考噪声的功率谱密度的统计规律预估受扰用户端在重叠频率范围内的每个第一子载波下行方向接收的参考噪声的功率谱密度，中心局端将每个第一子载波下行方向接收的参考噪声的功率谱密度发送给干扰用户端；为了保证测量效果，在具有多对线时，多对线在上述N个第一子载波都不发送信号。3. The silent noise measurement method uniformly extracts N first subcarriers in the overlapping frequency range, and the victim user acquires the power spectral density of the reference noise received in the downlink direction when the N first subcarriers do not transmit signals, The power spectral density of the reference noise received in the downlink direction is fed back to At the heart end, the central office predicts each first subcarrier of the victim user in the overlapping frequency range according to the statistical rule of the power spectral density of the reference noise received in the downlink direction when the N first subcarriers do not transmit signals. The power spectral density of the reference noise received in the downlink direction, the central office sends the power spectral density of the reference noise received in the downlink direction of each first subcarrier to the interference user end; in order to ensure the measurement effect, when there are multiple pairs of lines, The pair of lines does not transmit signals on the N first subcarriers.
干扰用户端根据上述与受扰用户端连接的中心局端在第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取上述第一子载波的第一PSD掩模，针对图3a和图3b两种场景，具体地，Obtaining, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office connected to the victim user end in the downlink direction of the first subcarrier Mode, for the two scenarios of Figure 3a and Figure 3b, specifically,
具体地，在图3a所示的场景中，即干扰用户端的线路电器长度小于等于受扰户端的线路电器长度，根据公式：Specifically, in the scenario shown in FIG. 3a, the length of the line electrical device that interferes with the user end is less than or equal to the length of the line electrical appliance of the victim terminal, according to the formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFTXNPSDds(f)表示与受扰用户端连接的中心局端在第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000009
其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子，默认值为0。Wherein, the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFTXNPSD ds (f) represents that the central office connected to the victim UE is in the first subcarrier The power spectral density of the reference noise transmitted in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, LOSS(kl 0 , f) represents the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000009
Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk. The default value is 0.
需要说明的是，Knext也可以用户根据线缆实际的NEXT串扰强度自定义。It should be noted that K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
在图3b所示的场景中，即干扰用户端的线路电器长度大于等于受扰户端的线路电器长度，根据公式：In the scenario shown in FIG. 3b, the length of the line electrical device that interferes with the user end is greater than or equal to the length of the line electrical appliance of the victim terminal, according to the formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFTXNPSDds(f)表示与受扰用户端连接的中心局端在第一子载波下行方向发送的参考噪声的功率谱密度， NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(2kl0,REF-kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000010
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，上述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，具体地，参考受扰用户端的电器长度可以是多个受扰用户端的电器长度的最小值，或者，多个受扰用户端的电器长度的平均值，或者，根据经验指定的多个受扰用户端的其中一个的电器长度；Δ表示控制近端串音影响大小的微调因子，默认值为0。Wherein, the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFTXNPSD ds (f) represents that the central office connected to the victim UE is in the first subcarrier The power spectral density of the reference noise transmitted in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10lo g10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, LOSS (2kl 0, REF -kl 0 , f) indicates the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000010
 Kl 0 represents the length of the line appliance that interferes with the user end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victimized end is the equivalent length of the appliance length of the at least one victim end, specifically, The length of the appliance of the referenced victim end may be the minimum value of the length of the appliance of the plurality of victim terminals, or the average of the lengths of the appliances of the plurality of victim terminals, or one of the plurality of victim terminals specified by experience. The length of the appliance; Δ represents the trimming factor that controls the magnitude of the near-end crosstalk. The default value is 0.
需要说明的是，Knext也可以用户根据线缆实际的NEXT串扰强度自定义。It should be noted that K next can also be customized by the user according to the actual NEXT crosstalk strength of the cable.
在上述实施例中，REFRXNPSDds(f)可以采用如下两种方式获得：In the above embodiment, REFRXNPSD ds (f) can be obtained in the following two ways:
1、经验估计法，采用类似发送端虚拟噪声(Virtual Noise)方式在中心局端配置参考噪声的功率谱密度；1. The empirical estimation method uses a virtual noise similar to the transmitting side to configure the power spectral density of the reference noise at the central office end;
2、参数估计法，中心局端获取SNR(f),TXPSD(f),根据下列公式计算可得：2. Parameter estimation method, the central office obtains SNR(f), TXPSD(f), which is calculated according to the following formula:
REFTXNPSD(f)＝TXPSD(f)-SNR(f)REFTXNPSD(f)=TXPSD(f)-SNR(f)
其中，SNR(f)表示信噪比，Hlog(f)表示直接信道衰减，TXPSD(f)表示发送的功率谱密度。Where SNR(f) represents the signal-to-noise ratio, Hlog(f) represents the direct channel attenuation, and TXPSD(f) represents the transmitted power spectral density.
图4为本发明信号发送的装置实施例一的结构示意图，本实施例的装置包括接收模块401、获取模块402和处理模块403，其中，接收模块401用于中心局端发送的功率回退参数，上述功率回退参数中包括重叠频率的范围，上述重叠频率的范围是指上述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；获取模块402用于根据上述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，上述第一PSD掩模用于限定上述干扰用户端在上述第一子载波发送上行信号所采用的PSD的最大值，上述第一子载波为上述重叠频率的范围内的任一子载波；处理模块403用于根据上述第一子载波的第一PSD掩模确定在上述第一子载波发送上行信号所采用的PSD，上述在上述第一子载波发送上行信号所采用的PSD小 于等于上述第一子载波的第一PSD掩模。4 is a schematic structural diagram of Embodiment 1 of a device for transmitting a signal according to the present invention. The device in this embodiment includes a receiving module 401, an obtaining module 402, and a processing module 403. The receiving module 401 is configured to use a power backoff parameter sent by the central office. The power back-off parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to a range in which the uplink frequency of the interfering user end overlaps with the downlink frequency of the victim user end; and the obtaining module 402 is configured to acquire the range according to the range of the overlapping frequency. a first power spectral density PSD mask of a subcarrier, wherein the first PSD mask is used to limit a maximum value of a PSD used by the interfering UE to send an uplink signal on the first subcarrier, where the first subcarrier is the foregoing Any one of the subcarriers in the range of the overlapping frequency; the processing module 403 is configured to determine, according to the first PSD mask of the first subcarrier, a PSD used for transmitting the uplink signal in the first subcarrier, where the first subcarrier is Small PSD used to send uplink signals And a first PSD mask equal to the first subcarrier.
在上述实施例中，上述功率回退参数中还包括上述第一子载波的第二PSD掩模，上述第二PSD掩模为中心局指示上述干扰用户端在上述第一子载波发送上行信号所采用的PSD的上限值；上述处理模块403具体用于根据上述第一子载波的第一PSD掩模和上述第一子载波的第二PSD掩模确定在上述第一子载波发送上行信号所采用的PSD，其中，上述在上述第一子载波发送上行信号所采用的PSD小于等于上述第一子载波的第二PSD掩模。In the above embodiment, the power backoff parameter further includes a second PSD mask of the first subcarrier, where the second PSD mask indicates that the interfering UE sends an uplink signal on the first subcarrier. The upper limit value of the PSD is used; the processing module 403 is specifically configured to determine, according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier, to send an uplink signal on the first subcarrier. The PSD is used, wherein the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to the second PSD mask of the first subcarrier.
在上述实施例中，上述获取模块402具体用于根据上述受扰用户端在上述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取上述第一子载波的第一PSD掩模。In the foregoing embodiment, the acquiring module 402 is specifically configured to acquire the first subcarrier according to the power spectral density of the reference noise received by the victim user in the downlink direction of the first subcarrier and the strength of the near-end crosstalk channel. The first PSD mask.
在上述实施例中，当上述干扰用户端的线路电器长度和上述受扰用户端的线路电器长度相等时，In the above embodiment, when the length of the line electrical device that interferes with the user terminal is equal to the length of the line electrical device of the victim user terminal,
上述获取模块402具体用于根据公式：The obtaining module 402 is specifically configured according to a formula:
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFRXNPSDds(f)表示受扰用户端在上述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier. The power spectral density of the noise, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents the near-end crosstalk The coupling coefficient, Δ, represents a fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
在上述实施例中，当上述干扰用户端的线路电器长度和上述受扰用户端的线路电器长度不相等时，In the above embodiment, when the length of the line electrical device that interferes with the user terminal is not equal to the length of the line electrical device of the victim user terminal,
上述获取模块402具体用于根据公式The obtaining module 402 is specifically configured according to a formula
OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFRXNPSDds(f)表示受扰用户端在上述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的 耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
Figure PCTCN2014092579-appb-000011
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，上述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a reference received by the victim UE in the downlink direction of the first subcarrier. The power spectral density of the noise, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents the near-end crosstalk Coupling coefficient, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
Figure PCTCN2014092579-appb-000011
Kl 0 represents the length of the line appliance that interferes with the user end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victimized end is the equivalent length of the appliance length of at least one victim user, Δ indicates control The near-end crosstalk affects the size of the fine-tuning factor.
在上述实施例中，上述获取模块402具体用于根据与受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取上述第一子载波的第一PSD掩模。In the foregoing embodiment, the obtaining module 402 is specifically configured to: according to a power spectral density of a reference noise and a strength of a near-end crosstalk channel, which are sent in a downlink direction of the first subcarrier according to a central office connected to the victim user end, Obtaining a first PSD mask of the first subcarrier described above.
在上述实施例中，当上述干扰用户端的线路电器长度小于等于上述受扰用户端的线路电器长度时，In the above embodiment, when the length of the line electrical device that interferes with the user end is less than or equal to the length of the line electrical appliance of the victim user terminal,
上述获取模块402具体用于根据公式：The obtaining module 402 is specifically configured according to a formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFTXNPSDds(f)表示与受扰用户端连接的中心局端在上述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000012
其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子。Wherein, the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFTXNPSD ds (f) represents that the central office connected to the victim user end is in the first sub The power spectral density of the reference noise transmitted in the downlink direction of the carrier, NEXTChannel(K next ,f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next The coupling coefficient representing the near-end crosstalk, LOSS(kl 0 , f) indicates the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000012
Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
在上述实施例中，当上述干扰用户端的线路电器长度大于等于上述受扰用户端的线路电器长度时，In the above embodiment, when the length of the line electrical device that interferes with the user end is greater than or equal to the length of the line electrical appliance of the victim user terminal,
上述获取模块402具体用于根据公式：The obtaining module 402 is specifically configured according to a formula:
OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)
-Δ+3.5[dBm/Hz]-Δ+3.5[dBm/Hz]
获取上述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
其中，上述OPBOMASK(f)表示上述第一子载波的第一PSD掩模，f表示上述第一子载波，上述REFTXNPSDds(f)表示与受扰用户端连接的中心局端在上述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数， LOSS(2kl0,REF-kl0,f)表示干扰用户的直接信道衰减，
Figure PCTCN2014092579-appb-000013
kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，上述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。Wherein, the OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFTXNPSD ds (f) represents that the central office connected to the victim user end is in the first sub The power spectral density of the reference noise transmitted in the downlink direction of the carrier, NEXTChannel(K next ,f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next The coupling coefficient representing the near-end crosstalk, LOSS (2kl 0, REF -kl 0 , f) indicates the direct channel attenuation of the interfering user,
Figure PCTCN2014092579-appb-000013
 Kl 0 represents the length of the line appliance that interferes with the user end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victimized end is the equivalent length of the appliance length of at least one victim user, Δ indicates control The near-end crosstalk affects the size of the fine-tuning factor.
在上述实施例中，上述处理模块403具体用于根据上述第一子载波的第一PSD掩模、上述第一子载波的第二PSD掩模和上述第一子载波的第三PSD掩模确定在上述第一子载波发送上行信号所采用的PSD，其中，上述在上述第一子载波发送上行信号所采用的PSD小于等于上述第一子载波的第三PSD掩模，上述第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。In the foregoing embodiment, the processing module 403 is specifically configured to determine, according to the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier. a PSD used by the first subcarrier to transmit an uplink signal, where the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to a third PSD mask of the first subcarrier, and the first subcarrier is used. The third PSD mask represents the highest PSD initial limit used by the interfering user upstream direction in the initial channel discovery phase.
在上述实施例中，上述接收模块401具体用于通过O-SIGNATURE消息接收上述功率回退参数。In the foregoing embodiment, the receiving module 401 is specifically configured to receive the power backoff parameter by using an O-SIGNATURE message.
上述装置实施例，对应地可用于执行图1所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。The foregoing device embodiments are correspondingly used to implement the technical solution of the method embodiment shown in FIG. 1 , and the implementation principles and technical effects thereof are similar, and details are not described herein again.
图5为本发明信号发送的装置实施例二的结构示意图，如图5所示，本实施例的装置包括存储器501和处理器502，其中，上述存储器501用于存储执行信号发送的方法的代码；上述处理器502用于调用上述代码，执行如下操作：FIG. 5 is a schematic structural diagram of Embodiment 2 of a device for signaling according to the present invention. As shown in FIG. 5, the device in this embodiment includes a memory 501 and a processor 502, wherein the memory 501 is configured to store a code for performing a signal transmission method. The above processor 502 is used to call the above code, and performs the following operations:
接收中心局端发送的功率回退参数，上述功率回退参数中包括重叠频率的范围，上述重叠频率的范围是指上述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；根据上述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，上述第一PSD掩模用于限定上述干扰用户端在上述第一子载波发送上行信号所采用的PSD的最大值，上述第一子载波为上述重叠频率的范围内的任一子载波；根据上述第一子载波的第一PSD掩模确定在上述第一子载波发送上行信号所采用的PSD，上述在上述第一子载波发送上行信号所采用的PSD小于等于上述第一子载波的第一PSD掩模。Receiving a power backoff parameter sent by the central office end, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user terminal; And obtaining, by the range of the frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to limit a maximum value of the PSD used by the interference UE to send an uplink signal on the first subcarrier, where the foregoing One subcarrier is any subcarrier in the range of the overlapping frequency; determining, according to the first PSD mask of the first subcarrier, a PSD used for transmitting an uplink signal on the first subcarrier, where the first subcarrier is The PSD used to transmit the uplink signal is less than or equal to the first PSD mask of the first subcarrier.
上述装置实施例，对应地可用于执行图1所示方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。 The foregoing device embodiments are correspondingly used to implement the technical solution of the method embodiment shown in FIG. 1 , and the implementation principles and technical effects thereof are similar, and details are not described herein again.
本发明还提供一种信号发送系统实施例，如图2、图3a和图3b所示，包括：至少两条用户线路(图2、图3a和图3b仅以两条示出)，每条上述用户线路的一端与中心局端连接，另一端与用户端连接，上述用户端为受扰用户端或者干扰用户端；上述干扰用户端为图4或图5所示的信号发送装置，可以实现图4或图5所示的信号发送装置的功能。The present invention also provides an embodiment of a signal transmission system, as shown in FIG. 2, FIG. 3a and FIG. 3b, comprising: at least two subscriber lines (only two shown in FIG. 2, FIG. 3a and FIG. 3b), each of which One end of the subscriber line is connected to the central office end, and the other end is connected to the user end, and the user end is a victim user terminal or an interference user terminal; the interference user terminal is a signal transmitting device as shown in FIG. 4 or FIG. The function of the signal transmitting apparatus shown in Fig. 4 or Fig. 5.
在图2中，上面的用户线路左端连接的为中心局端，右端连接的为受扰用户端，下面的用户线路左端连接的为中心局端，右端连接的为干扰用户端；在图3a中，上面的用户线路左端连接的为中心局端，右端连接的为受扰用户端，下面的用户线路左端连接的为中心局端，右端连接的为干扰用户端；在图3b中，上面的用户线路左端连接的为中心局端，右端连接的为受扰用户端，下面的用户线路左端连接的为中心局端，右端连接的为干扰用户端。In Figure 2, the upper left end of the subscriber line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user; in Figure 3a The upper left end of the subscriber line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user; in Figure 3b, the upper user The left end of the line is connected to the central office, the right end is connected to the victim end, the lower left end of the subscriber line is connected to the central office, and the right end is connected to the interfering user.
需要说明的是，本发明上述实施例的技术方案不仅适用于数字用户线路电话网络的串音消除，也适用于其他利用电话线路的网络，对此，本发明不作限制。It should be noted that the technical solution of the foregoing embodiment of the present invention is applicable not only to the crosstalk cancellation of the digital subscriber line telephone network, but also to other networks using the telephone line, and the present invention is not limited thereto.
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。 Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (22)

  1. 一种信号发送的方法，其特征在于，包括：A method for signal transmission, comprising:
    干扰用户端接收中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；The interfering client receives the power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency is that the uplink frequency of the interfering user overlaps with the downlink frequency of the victim end. Scope
    所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；Acquiring, by the interfering UE, a first power spectral density PSD mask of the first subcarrier according to the range of the overlapping frequency, where the first PSD mask is used to define that the interfering UE sends on the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
    所述干扰用户端根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。Determining, by the interfering UE, a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier, where the PSD used by the first subcarrier to send an uplink signal Less than or equal to the first PSD mask of the first subcarrier.
  2. 根据权利要求1所述的方法，其特征在于，所述功率回退参数中还包括所述第一子载波的第二PSD掩模，所述第二PSD掩模为中心局指示所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的上限值；The method according to claim 1, wherein the power backoff parameter further comprises a second PSD mask of the first subcarrier, and the second PSD mask is a central office indicating the interfering user The upper limit value of the PSD used by the terminal to transmit the uplink signal on the first subcarrier;
    所述干扰用户端根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，包括：Determining, by the interfering UE, the PSD used to send the uplink signal on the first subcarrier according to the first PSD mask of the first subcarrier, including:
    所述干扰用户端根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第二PSD掩模。Determining, by the interfering UE, a PSD used to send an uplink signal on the first subcarrier according to a first PSD mask of the first subcarrier and a second PSD mask of the first subcarrier, where The PSD used by the first subcarrier to transmit the uplink signal is less than or equal to the second PSD mask of the first subcarrier.
  3. 根据权利要求1或2所述的方法，其特征在于，所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一PSD掩模，包括：The method according to claim 1 or 2, wherein the interfering UE obtains the first PSD mask of the first subcarrier according to the range of the overlapping frequency, including:
    所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel mold.
  4. 根据权利要求3所述的方法，其特征在于，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度相等时，The method according to claim 3, wherein when the length of the line appliance of the interfering user terminal and the length of the line appliance of the victim user end are equal,
    所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接 收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：The interfering UE is connected in the downlink direction of the first subcarrier according to the victim UE Acquiring the power spectral density of the reference noise and the strength of the near-end crosstalk channel, acquiring the first PSD mask of the first subcarrier, including:
    根据公式According to the formula
    OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]获取所述第一子载波的第一PSD掩模，OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)−Δ+3.5[dBm/Hz] acquiring the first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, Δ represents the fine-tuning factor that controls the magnitude of the influence of the near-end crosstalk.
  5. 根据权利要求3所述的方法，其特征在于，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度不相等时，The method according to claim 3, wherein when the length of the line appliance of the interfering user terminal and the length of the line appliance of the victim user end are not equal,
    所述干扰用户端根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Acquiring, by the interfering UE, the first PSD mask of the first subcarrier according to the power spectral density of the reference noise received by the victim UE in the downlink direction of the first subcarrier and the strength of the near end crosstalk channel Module, including:
    根据公式According to the formula
    OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
    Figure PCTCN2014092579-appb-100001
    kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents Coupling coefficient of near-end crosstalk, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
    Figure PCTCN2014092579-appb-100001
    Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
  6. 根据权利要求1或2所述的方法，其特征在于，所述干扰用户端根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，包括： The method according to claim 1 or 2, wherein the interfering UE obtains a first power spectral density PSD mask of the first subcarrier according to the range of the overlapping frequency, including:
    所述干扰用户端根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。Acquiring the first sub-portion according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office connected to the victim user end in the downlink direction of the first subcarrier The first PSD mask of the carrier.
  7. 根据权利要求6所述的方法，其特征在于，当所述干扰用户端的线路电器长度小于等于所述受扰用户端的线路电器长度时，The method according to claim 6, wherein when the length of the line appliance of the interfering user terminal is less than or equal to the length of the line appliance of the victim user terminal,
    所述干扰用户端根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Acquiring the first sub-portion according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office connected to the victim user end in the downlink direction of the first subcarrier The first PSD mask of the carrier includes:
    根据公式：According to the formula:
    OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
    Figure PCTCN2014092579-appb-100002
    其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user,
    Figure PCTCN2014092579-appb-100002
    Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  8. 根据权利要求6所述的方法，其特征在于，当所述干扰用户端的线路电器长度大于等于所述受扰用户端的线路电器长度时，The method according to claim 6, wherein when the length of the line appliance of the interfering user end is greater than or equal to the length of the line appliance of the victim user end,
    所述干扰用户端根据所述与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模，包括：Obtaining, according to the power spectral density of the reference noise and the strength of the near-end crosstalk channel sent by the central office end connected to the victim user end in the downlink direction of the first subcarrier, A first PSD mask of a subcarrier includes:
    根据公式：According to the formula:
    OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度， NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(2kl0,REF-kl0,f)表示干扰用户的直接信道衰减，
    Figure PCTCN2014092579-appb-100003
    kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (2kl 0, REF -kl 0 , f) represents the direct channel attenuation of the interfering user,
    Figure PCTCN2014092579-appb-100003
     Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
  9. 根据权利要求2～8任一项所述的方法，其特征在于，所述干扰用户端根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，包括：The method according to any one of claims 2 to 8, wherein the interfering UE determines according to a first PSD mask of the first subcarrier and a second PSD mask of the first subcarrier The PSD used to send the uplink signal on the first subcarrier includes:
    所述干扰用户端根据所述第一子载波的第一PSD掩模、所述第一子载波的第二PSD掩模和所述第一子载波的第三PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第三PSD掩模，所述第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。The interfering UE determines the first in the first PSD mask of the first subcarrier, the second PSD mask of the first subcarrier, and the third PSD mask of the first subcarrier. a PSD used by the subcarrier to transmit an uplink signal, where the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to a third PSD mask of the first subcarrier, where the first subcarrier is The third PSD mask represents the highest PSD initial limit used by the interfering user upstream direction in the initial channel discovery phase.
  10. 根据权利要求1～9任一项所述的方法，其特征在于，所述干扰用户端接收中心局端发送的功率回退参数，包括：The method according to any one of claims 1 to 9, wherein the interference client receives the power backoff parameter sent by the central office, and includes:
    所述干扰用户端通过O-SIGNATURE消息接收所述功率回退参数。The interfering UE receives the power backoff parameter through an O-SIGNATURE message.
  11. 一种信号发送的装置，其特征在于，包括：A device for transmitting signals, comprising:
    接收模块，用于中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；a receiving module, configured to use a power backoff parameter sent by the central office, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency refers to an uplink frequency of the interference user end and a downlink frequency of the victim user end The extent of overlap;
    获取模块，用于根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；And an acquiring module, configured to acquire, according to the range of the overlapping frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to define that the interference UE sends the first subcarrier a maximum value of a PSD used by the uplink signal, where the first subcarrier is any subcarrier within a range of the overlapping frequency;
    处理模块，用于根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。a processing module, configured to determine, according to a first PSD mask of the first subcarrier, a PSD used to send an uplink signal on the first subcarrier, where the PSD used by the first subcarrier to send an uplink signal Less than or equal to the first PSD mask of the first subcarrier.
  12. 根据权利要求11所述的装置，其特征在于，所述功率回退参数 中还包括所述第一子载波的第二PSD掩模，所述第二PSD掩模为中心局指示所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的上限值；The apparatus of claim 11 wherein said power backoff parameter The second PSD mask of the first subcarrier is further included, where the second PSD mask is an upper limit value of the PSD used by the interfering UE to send an uplink signal on the first subcarrier. ;
    所述处理模块具体用于根据所述第一子载波的第一PSD掩模和所述第一子载波的第二PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第二PSD掩模。The processing module is configured to determine, according to the first PSD mask of the first subcarrier and the second PSD mask of the first subcarrier, a PSD used to send an uplink signal on the first subcarrier, where And the PSD used by the uplink signal sent by the first subcarrier is less than or equal to the second PSD mask of the first subcarrier.
  13. 根据权利要求11或12所述的装置，其特征在于，所述获取模块具体用于根据所述受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。The apparatus according to claim 11 or 12, wherein the obtaining module is specifically configured to: according to a power spectral density and a near-end string of reference noise received by the victim user in a downlink direction of the first subcarrier The strength of the tone channel acquires the first PSD mask of the first subcarrier.
  14. 根据权利要求13所述的装置，其特征在于，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度相等时，The apparatus according to claim 13, wherein when the length of the line appliance of the interfering user terminal and the length of the line appliance of the victim user end are equal,
    所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
    OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，Δ表示控制近端串音影响大小的微调因子。The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents The coupling coefficient of the near-end crosstalk, Δ represents the fine-tuning factor that controls the magnitude of the influence of the near-end crosstalk.
  15. 根据权利要求13所述的装置，其特征在于，当所述干扰用户端的线路电器长度和所述受扰用户端的线路电器长度不相等时，The apparatus according to claim 13, wherein when the length of the line appliance of the interfering user terminal and the length of the line appliance of the victim user end are not equal,
    所述获取模块具体用于根据公式The obtaining module is specifically used according to a formula
    OPBOMASK(f)＝REFRXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(|kl0-kl0,REF|,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFRXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(|kl 0 -kl 0,REF |,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFRXNPSDds(f)表示受扰用户端在所述第一子载波下行方向接收的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的 耦合系数，LOSS(|kl0-kl0,REF|,f)近端串音信道衰减，
    Figure PCTCN2014092579-appb-100004
    kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f denotes the first subcarrier, and the REFRXNPSD ds (f) represents a victim user end in the first subcarrier The power spectral density of the reference noise received in the downlink direction, NEXTChannel(K next ,f) represents the strength of the near-end crosstalk channel, NEXTChannel(K next ,f)=10log 10 (K next ·f 3/2 ), K next represents Coupling coefficient of near-end crosstalk, LOSS (|kl 0 -kl 0, REF |, f) near-end crosstalk channel attenuation,
    Figure PCTCN2014092579-appb-100004
    Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
  16. 根据权利要求11或12所述的装置，其特征在于，所述获取模块具体用于根据与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度和近端串音信道的强度，获取所述第一子载波的第一PSD掩模。The apparatus according to claim 11 or 12, wherein the obtaining module is specifically configured to: use, according to a power of reference noise sent in a downlink direction of the first subcarrier according to a central office connected to the victim user end The spectral density and the strength of the near-end crosstalk channel acquire a first PSD mask of the first subcarrier.
  17. 根据权利要求16所述的装置，其特征在于，当所述干扰用户端的线路电器长度小于等于所述受扰用户端的线路电器长度时，The apparatus according to claim 16, wherein when the length of the line appliance of the interfering user terminal is less than or equal to the length of the line appliance of the victim user terminal,
    所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
    OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(kl0,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(kl 0 ,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度，NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(kl0,f)表示干扰用户的直接信道衰减，
    Figure PCTCN2014092579-appb-100005
    其中，kl0表示干扰用户端的线路电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (kl 0 , f) represents the direct channel attenuation of the interfering user,
    Figure PCTCN2014092579-appb-100005
    Where k1 0 represents the length of the line appliance that interferes with the user end, and Δ represents the trimming factor that controls the magnitude of the influence of the near-end crosstalk.
  18. 根据权利要求16所述的装置，其特征在于，当所述干扰用户端的线路电器长度大于等于所述受扰用户端的线路电器长度时，The apparatus according to claim 16, wherein when the length of the line electrical device of the interfering user terminal is greater than or equal to the length of the line electrical appliance of the victim user terminal,
    所述获取模块具体用于根据公式：The obtaining module is specifically used according to a formula:
    OPBOMASK(f)＝REFTXNPSDds(f)-NEXTChannel(Knext,f)+LOSS(2kl0,REF-kl0,f)-Δ+3.5[dBm/Hz]OPBOMASK(f)=REFTXNPSD ds (f)-NEXTChannel(K next ,f)+LOSS(2kl 0,REF -kl 0 ,f)-Δ+3.5[dBm/Hz]
    获取所述第一子载波的第一PSD掩模，Obtaining a first PSD mask of the first subcarrier,
    其中，所述OPBOMASK(f)表示所述第一子载波的第一PSD掩模，f表示所述第一子载波，所述REFTXNPSDds(f)表示与所述受扰用户端连接的中心局端在所述第一子载波下行方向发送的参考噪声的功率谱密度，NEXTChannel(Knext,f)表示近端串音信道的强度， NEXTChannel(Knext,f)＝10log10(Knext·f3/2)，Knext表示近端串音的耦合系数，LOSS(2kl0,REF-kl0,f)表示干扰用户的直接信道衰减，
    Figure PCTCN2014092579-appb-100006
    kl0表示干扰用户端的线路电器长度，kl0,REF表示参考受扰用户端的线路电器长度，所述参考受扰用户端的电器长度是至少一个受扰用户端的电器长度的等效电器长度，Δ表示控制近端串音影响大小的微调因子。    The OPBOMASK(f) represents a first PSD mask of the first subcarrier, f represents the first subcarrier, and the REFTXNPSD ds (f) represents a central office connected to the victim user end. The power spectral density of the reference noise transmitted in the downlink direction of the first subcarrier, NEXTChannel(K next , f) indicates the strength of the near-end crosstalk channel, NEXTChannel(K next , f)=10log 10 (K next ·f 3/2 ), K next represents the coupling coefficient of the near-end crosstalk, and LOSS (2kl 0, REF -kl 0 , f) represents the direct channel attenuation of the interfering user,
    Figure PCTCN2014092579-appb-100006
     Kl 0 represents the length of the line appliance that interferes with the subscriber end, kl 0, REF represents the length of the line appliance referring to the victim end, and the length of the appliance of the reference victim end is the equivalent length of the appliance length of the at least one victim end, Δ A fine-tuning factor that controls the magnitude of the near-end crosstalk effect.
  19. 根据权利要求12～18任一项所述的装置，其特征在于，所述处理模块具体用于根据所述第一子载波的第一PSD掩模、所述第一子载波的第二PSD掩模和所述第一子载波的第三PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，其中，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第三PSD掩模，所述第一子载波的第三PSD掩模表示干扰用户端上行方向在初始化信道发现阶段使用的最高PSD初始限制。The device according to any one of claims 12 to 18, wherein the processing module is specifically configured to: according to a first PSD mask of the first subcarrier, and a second PSD mask of the first subcarrier The modulo and the third PSD mask of the first subcarrier determine a PSD used to transmit an uplink signal on the first subcarrier, where the PSD used to transmit the uplink signal on the first subcarrier is less than or equal to The third PSD mask of the first subcarrier, the third PSD mask of the first subcarrier indicates the highest PSD initial limit used by the interfering user uplink direction in the initial channel discovery phase.
  20. 根据权利要求11～19任一项所述的装置，其特征在于，所述接收模块具体用于通过O-SIGNATURE消息接收所述功率回退参数。The apparatus according to any one of claims 11 to 19, wherein the receiving module is specifically configured to receive the power backoff parameter by using an O-SIGNATURE message.
  21. 一种信号发送的装置，其特征在于，包括：A device for transmitting signals, comprising:
    存储器和处理器，所述存储器用于存储执行信号发送的方法的代码；所述处理器用于调用所述代码，执行如下操作：a memory and a processor for storing code for performing a method of signaling; the processor for calling the code to perform the following operations:
    接收中心局端发送的功率回退参数，所述功率回退参数中包括重叠频率的范围，所述重叠频率的范围是指所述干扰用户端的上行频率与受扰用户端的下行频率重叠的范围；根据所述重叠频率的范围获取第一子载波的第一功率谱密度PSD掩模，所述第一PSD掩模用于限定所述干扰用户端在所述第一子载波发送上行信号所采用的PSD的最大值，所述第一子载波为所述重叠频率的范围内的任一子载波；根据所述第一子载波的第一PSD掩模确定在所述第一子载波发送上行信号所采用的PSD，所述在所述第一子载波发送上行信号所采用的PSD小于等于所述第一子载波的第一PSD掩模。And receiving, by the central office, a power backoff parameter, where the power backoff parameter includes a range of overlapping frequencies, where the range of the overlapping frequency is a range in which the uplink frequency of the interference user end overlaps with the downlink frequency of the victim user end; Obtaining, according to the range of the overlapping frequency, a first power spectral density PSD mask of the first subcarrier, where the first PSD mask is used to define a used by the interference UE to send an uplink signal on the first subcarrier a maximum value of the PSD, the first subcarrier being any one of the subcarriers in the range of the overlapping frequency; determining, according to the first PSD mask of the first subcarrier, transmitting an uplink signal on the first subcarrier In the adopted PSD, the PSD used for transmitting the uplink signal on the first subcarrier is less than or equal to the first PSD mask of the first subcarrier.
  22. 一种信号发送系统，其特征在于，包括：A signal transmission system, comprising:
    至少两条用户线路，每条所述用户线路的一端与中心局端连接，另一端与用户端连接，所述用户端为受扰用户端或者干扰用户端； At least two user lines, one end of each of the subscriber lines is connected to the central office end, and the other end is connected to the user end, and the user end is a victim user or interferes with the user end;
    所述干扰用户端为如权利要求11～20任一项所述的信号发送装置。 The interference client is the signal transmitting apparatus according to any one of claims 11 to 20.
PCT/CN2014/092579 2014-11-28 2014-11-28 Signal sending method, apparatus and system WO2016082221A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019096014A1 (en) * 2017-11-18 2019-05-23 中兴通讯股份有限公司 Collinear transmission method and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1650588A (en) * 2002-04-29 2005-08-03 因芬奈昂技术股份有限公司 ADSL system with improved data rate
CN101729094A (en) * 2008-10-31 2010-06-09 华为技术有限公司 Uplink power decreasing method, device and system in digital subscriber lines
WO2012167537A1 (en) * 2011-11-03 2012-12-13 华为技术有限公司 Method, apparatus and system for reducing interference in digital subscriber line

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071853A1 (en) * 2004-01-09 2005-08-04 Conexant Systems, Inc. Real-time formation of optimal power spectral density masks
EP1905195B1 (en) * 2005-07-10 2020-09-02 Assia Spe, Llc Dsl system estimation
CN1866937A (en) * 2005-07-29 2006-11-22 华为技术有限公司 Method and system for carrying out shaping on frequency spectrum of access apparatus output signal
JP4835293B2 (en) * 2006-07-13 2011-12-14 日本電気株式会社 Transmission output control device, multi-carrier transmission system, transmission output control method, and transmission output control program
US9077819B2 (en) * 2011-04-11 2015-07-07 Mediatek Inc. Transmission power control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1650588A (en) * 2002-04-29 2005-08-03 因芬奈昂技术股份有限公司 ADSL system with improved data rate
CN101729094A (en) * 2008-10-31 2010-06-09 华为技术有限公司 Uplink power decreasing method, device and system in digital subscriber lines
WO2012167537A1 (en) * 2011-11-03 2012-12-13 华为技术有限公司 Method, apparatus and system for reducing interference in digital subscriber line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019096014A1 (en) * 2017-11-18 2019-05-23 中兴通讯股份有限公司 Collinear transmission method and apparatus
CN109818650A (en) * 2017-11-18 2019-05-28 中兴通讯股份有限公司 Conllinear transmission method and device
CN109818650B (en) * 2017-11-18 2021-11-02 中兴通讯股份有限公司 Collinear transmission method and device

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