WO2015039310A1 - 一种串扰场景下的去激活方法及系统 - Google Patents
一种串扰场景下的去激活方法及系统 Download PDFInfo
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- WO2015039310A1 WO2015039310A1 PCT/CN2013/083792 CN2013083792W WO2015039310A1 WO 2015039310 A1 WO2015039310 A1 WO 2015039310A1 CN 2013083792 W CN2013083792 W CN 2013083792W WO 2015039310 A1 WO2015039310 A1 WO 2015039310A1
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- 230000009849 deactivation Effects 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 85
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- 230000008859 change Effects 0.000 claims description 11
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- 230000004913 activation Effects 0.000 abstract description 18
- 238000010295 mobile communication Methods 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 description 54
- 230000008569 process Effects 0.000 description 25
- 238000004364 calculation method Methods 0.000 description 7
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Classifications
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/64—Hybrid switching systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/64—Hybrid switching systems
- H04L12/6418—Hybrid transport
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/487—Testing crosstalk effects
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a deactivation method and system in a crosstalk scenario.
- Digital Subscriber Line is a high-speed data transmission technology for telephone twisted pair transmission.
- G.fast is the latest DSL technology, also known as Gigabit DSL. This technology uses 100M or even In the high frequency range of 200M, crosstalk is very serious due to high frequency band, and crosstalk includes Near End Cross-Talk (NEXT) and Far End Cross-Talk (FEXT).
- NEXT Near End Cross-Talk
- FXT Far End Cross-Talk
- G.fast uses Time Division Duplexing (TDD) technology to transmit uplink and downlink signals at different points in time to eliminate the effects of NEXT.
- TDD Time Division Duplexing
- Vectorization is used to eliminate the effects of FEXT.
- the central office end includes multiple ( M) transceivers
- the remote end includes a corresponding plurality of (M) transceivers, when downlink transmission, the M transceivers of the central office end serve as the transmitting end, and the M transceivers of the remote end serve as the receiving end, each transmitting The end corresponds to a receiving end.
- DMT discrete multi-subcarrier
- Feq k .H k .P k is equal to the unit matrix I M of M * M , all crosstalk is cancelled (reception of each line)
- the signal is only related to its own signal, independent of other signals).
- P k is a precoding matrix on the kth subcarrier
- the size is M*M
- the module implementing the precoding matrix function is a canceller, and this module is also a module implemented by the Vectoring system function.
- H k is the channel matrix on the M pair twisted pair on the kth subcarrier, the matrix size is M*M
- Fe q k is the FEQ matrix of M pairs of twisted pairs on the kth subcarrier. This matrix is M*M and is a diagonal matrix. The role of FEQ is to restore the received signal to a transmitted signal.
- the downlink FEQ is implemented in the receiver transceiver xTU-R.
- the theoretical value of Fe q k is the reciprocal of the diagonal of H k .
- W k is an uplink crosstalk cancellation matrix
- the precoding matrix acquisition method of the existing system is that the pilot training signal is sent in the Sync Symbol, and the Vectoring Control Entity (VCE) estimates the channel matrix through the pilot.
- VCE Vectoring Control Entity
- H k or a normalized channel matrix (the normalized channel matrix is equal to Feq k ⁇ ⁇ is a matrix with all diagonals equal to 1), and H k is collectively referred to as the channel matrix.
- the signal sent by the transmitting end TU (Transceiver Unit transceiver unit) in the sync symbol is usually an orthogonal pilot.
- the Pilot Sequence (PS) signal, and the receiving end TU receiving error sample (ES), through the ES and PS, can estimate the channel matrix ⁇ .
- the inverse matrix or the inversion is used to obtain the cancellation matrix p or w as e q .
- the module that calculates the cancellation matrix is VCE.
- G. fast data transmission units include Symbol, TDD Frame and SuperFrame.
- G. fast is sent in the uplink and downlink time division mode.
- Each TDD frame has a length of 36 Symbols, and 35 data symbols are used to transmit uplink and downlink data in a time division manner. Therefore, the total number of uplink and downlink Symbols is 35, and each TDD is used.
- the previous part sends the downlink Symbol
- the latter part sends the uplink Symbol
- the other Symbol is the gap sent by the uplink and downlink, and does not send a signal.
- the eight TDD Frames form a superframe.
- one superframe has a length of 288 Symbols, of which 280 are Symbols.
- 280 are Symbols.
- the other signal 278 symbol is data symbol, which transmits user data.
- DFE digital front end
- AFE analog front end
- Digital front end DFE processing modules such as Fourier transform FFT and inverse Fourier transform IFFT modules.
- Analog Front End AFE processing modules such as digital to analog conversion ADC/DAC modules and line driver modules. Let these modules stop working, which can greatly reduce the energy consumption of the system.
- the overall channel containing the precoder is the product of the three matrices Fe q k ' Hk ' pk , which is the identity matrix, so the crosstalk is completely cancelled. If you suddenly turn off some line analog signal, it is equivalent to zeroing the corresponding line of some lines in and off. Assume that the closed line set index number is d (deactive), and the unclosed line index number set is a (active, then the closed channel is:
- One method for solving the residual crosstalk problem in the prior art is to calculate the inverse matrix of the sub-matrix of the active line a based on the index of the active line.
- the specific implementation is: Assume that the inverse matrix P of the entire channel matrix H is expressed as Then, the inverse of the a index submatrix of H can be expressed as: HP dl;
- VDSL2 Vectoring systems do not need to update the Vectoring factor when deactivated.
- the two transceivers negotiate the state and perform state switching.
- the existing deactivation process is only applicable to the weak crosstalk scenario, that is, the channel matrix H is strictly diagonally dominant (the off-diagonal elements of H are much smaller than the diagonal elements). 4 Set a total of m lines in the current Vectoring system, where the line that remains active is a, and the line that is deactivated is d.
- the analog front end of the d line After deactivation, the analog front end of the d line is turned off, and the precoded signal of the d line has not been sent out, resulting in the red part of the signal not being sent out. (The meaning of the signal is: the signal of the a line is pre- After encoding P, the signal sent by d)). Since the signal 3 is not sent out, the crosstalk between the lines a will not be completely canceled, and the performance of the a line will be degraded.
- the crosstalk is weak and the diagonal is dominant, so ⁇ is also strong diagonally dominant.
- the embodiment of the present invention provides a method and a system for deactivating a crosstalk scenario, which are used to solve the problem of crosstalk residual caused by deactivating a line in other active lines in a scenario of strong crosstalk in the prior art.
- the present invention provides a method for deactivating a crosstalk scenario.
- M transceivers at a central office transmit data through M lines and crosstalk cancels M lines through a canceller, the method includes:
- the N transceivers switch to the deactivation execution state, and deactivate the N lines in the M lines; wherein, M and N is a positive integer;
- the N transceivers are switched to the deactivated execution state, and deactivating the N lines in the M lines includes:
- the downlink signal x a before the canceller corresponding to each of the N lines is turned off, and the state in which each of the N transceivers continues to transmit information is maintained.
- the N transceivers are switched to the deactivated execution state, and deactivating the N lines in the M lines includes:
- the switching, by the N transceivers, to the deactivated execution state includes:
- the N transceivers are switched to the deactivated execution state, and deactivating the N lines in the M lines includes:
- the event includes:
- the number of errors or the error duration of the transmitted data exceeds the set threshold
- the line is interrupted or the device is powered off.
- a sixth possible implementation manner when the event of the trigger state transition is a deactivation event that causes a crosstalk channel to change between the lines, the activation is re-estimated. A crosstalk channel between the lines, and the updated coefficients are obtained using a re-estimated channel between the active lines.
- the acquiring an update coefficient for updating a crosstalk cancellation coefficient between the active lines includes: performing by using deactivation The update coefficient is obtained by a crosstalk channel before the state and/or a crosstalk cancellation coefficient before deactivating the execution state.
- the entry of the line into the non-working state includes:
- the transceiver controlling the central office that is being deactivated enters a silent or idle state.
- the present invention further provides a deactivation system in a crosstalk scenario, where the system includes M transceivers at the central office end and a canceller, wherein data is sent through the M lines and passes through a canceller pair M.
- the system includes:
- the N transceivers When the transceiver is in the showtime state of transmitting data, if an event triggering a transition state is detected, the N transceivers switch to the deactivated execution state, and deactivate the N lines in the M lines; wherein, M and N Is a positive integer;
- the canceller obtains an update coefficient for updating a crosstalk cancellation coefficient between (MN) active lines, and uses the update coefficient to update crosstalk cancellation between the (MN) active lines
- the coefficient, and the transceiver that controls the deactivation of the execution state enters the silent or idle state, and the activation is completed.
- the transceiver turns off a downlink signal before the canceller corresponding to each of the N lines, and keeps each of the N transceivers The status of the transceiver analog front end continues to send information to the deactivated execution state.
- the transceiver turns off a signal before each of the N lines to cancel the corresponding canceler of the line, and simultaneously turns off each of the N lines.
- the analog front end corresponding to the active line is switched to the deactivated execution state;
- the canceller is further configured to perform signal compensation on the cancellation signals of (M-N) active lines to generate an offset output signal. .
- the transceiver maintains a continuous receiving uplink signal of each transceiver analog front end of the N transceivers to switch to a deactivated execution state.
- the transceiver turns off an analog front end of each of the N lines to switch to a deactivated execution state
- the canceller is further configured to perform signal compensation on the cancellation signals of (M-N) active lines to generate an offset output signal.
- the canceller is further configured to use a crosstalk channel before deactivating an execution state and/or deactivate an execution state.
- the previous crosstalk cancellation coefficient acquires the update coefficient.
- the transceiver state change and the crosstalk strong cancellation matrix update are combined to prevent the deactivated transceiver signal from affecting the stability of other lines of the Vector system.
- FIG. 1 is a schematic flow chart of a deactivation method in a crosstalk scenario according to Embodiment 1 of the present invention
- FIG. 2 is a schematic flow chart of a deactivation method in a crosstalk scenario according to Embodiment 2 of the present invention
- FIG. 3 is a schematic flowchart of a first method for deactivating a downlink crosstalk scenario according to Embodiment 3 of the present invention
- FIG. 4 is a schematic flowchart diagram of a second method for deactivating a downlink crosstalk scenario according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic flowchart of a first method for deactivating a crosstalk scenario in an uplink direction according to Embodiment 5 of the present invention
- FIG. 6 is a schematic flowchart of a second method for deactivating a crosstalk scenario in an uplink direction according to Embodiment 6 of the present invention.
- FIG. 7 is a schematic structural diagram of a deactivation system in a crosstalk scenario according to an embodiment of the present invention. detailed description
- Embodiment 1 As shown in FIG. 1 , the present invention provides a deactivation method in a crosstalk scenario, in which M transceivers at a central office end transmit data through M lines, and crosstalk cancellation is performed on M lines through a canceller. , the method includes:
- Step 101 When the M transceivers are in the showtime state of transmitting data, if an event triggering a transition state is detected, the N transceivers switch to the deactivated execution state, in the M lines. N lines are deactivated; wherein, M and N are positive integers;
- the deactivation execution state provided by the embodiment of the present invention refers to: a state in which the deactivation process is being executed.
- the trigger state transition may be that the transceiver meets the re-training rule, or may be a user-controlled trigger. Therefore, in the embodiment of the present invention, the trigger state transition event includes any one of the following modes:
- the number of errors in the transmitted data exceeds the set threshold; for example, when TU-0 (the central office transceiver, the transceiver on the device side), or TU-R (The remote transceiver, located on the user side, detects a serious error and affects the normal operation of the link.
- TU-0 the central office transceiver, the transceiver on the device side
- TU-R The remote transceiver, located on the user side, detects a serious error and affects the normal operation of the link.
- a command to trigger a state transition is detected; for example, the user sends a deactivation command through a command line, a network management, or other methods.
- DSE events such as line breaks or device power outages; for example, when the user side (TU-R) is powered off, or the subscriber line is disconnected at any one of the interfaces. This event is detected by TU-0 to initiate a deactivation request.
- Step 102 Acquire an update coefficient for updating a crosstalk cancellation coefficient between (MN) strip activation lines, update a crosstalk cancellation coefficient between the (MN) active lines by using the update coefficient, and control a deactivation execution state.
- the transceiver enters a silent or idle state and is deactivated.
- Some deactivated scenes (such as DSE or impedance matching after deactivation), some of which occur after deactivation, the crosstalk channel between the remaining lines will change. At this point, you need to re-estimate. And in order to avoid unnecessary busyness to the VCE, we can judge whether deactivation will cause channel changes between other lines.
- the method for updating the crosstalk cancellation coefficient between the activation lines by using the update coefficient, and controlling the deactivated line to enter the non-operation state may be: controlling the deactivation
- the remote transceiver enters a silent or idle state;
- the transceiver controlling the central office that is being deactivated enters a silent or idle state.
- Embodiment 2 As shown in FIG. 2, if the M transceivers at the central office transmit data through M lines and crosstalk cancels M lines through a canceller, the specific usage is provided by the embodiment of the present invention. The method is explained in further detail:
- Step 201 When the transceiver is in the showtime state, the state transition is triggered, and the deactivation process is entered.
- the deactivation process specifically deactivates the N lines in the M lines.
- Step 202 Acquire an update coefficient between (M-N) active lines, and update a crosstalk cancellation coefficient (Vector coefficient) between the (M-N) active lines by using the update coefficient;
- the crosstalk cancellation coefficient between the (MN) active lines is updated: the crosstalk cancellation coefficient between the two (MN) active lines is updated, for example, the original 10 lines are deactivated, and There are 8 left. Then the updated coefficient is a matrix of size 8*8, P12 is a coefficient of 2 to 1, P13 is a coefficient of 3 to 1 .... P21 is a coefficient of 1 to 2, and P23 is a coefficient of 3 to 2.
- Step 203 After the coefficient is updated, the deactivated line enters an idle state (L3 state), and the activation is completed.
- step 202 and step 203 may change the order, and the transceiver may be set to a silent or idle state, and then the coefficients are updated.
- the calculation of the update coefficient is performed by the Vectoring Control Entity (VCE), and the deactivated line can enter the idle state only after the transceiver acquires the VCE update coefficient.
- VCE Vectoring Control Entity
- the VCE may be busy (for example, the current coefficient update has not been completed).
- the VCE may take one of the following implementations. Update:
- the VCE delays responding to the request of the transceiver. After processing the current transaction, the coefficient update operation is performed according to the request of the transceiver, and the transceiver is notified after the operation is completed. While waiting for the VCE to respond to the deactivation request, the transceiver is always waiting in the deactivation process.
- the VCE may obtain the update coefficient in a plurality of manners, and may obtain the update coefficient by using a crosstalk channel before deactivating the execution state and/or deactivating the crosstalk cancellation coefficient before the execution state, where the specific implementation may be in the following manner. Any one:
- Method 1 Use the H matrix before deactivation to obtain the update coefficient:
- the ⁇ matrix before deactivation can be expressed as:
- the offset matrix ⁇ ⁇ (ie, the update coefficient) between the corresponding ( ⁇ - ⁇ ) active lines can be obtained by the formula:
- Method 2 using the ⁇ matrix before deactivation to obtain the update coefficient:
- Complete P matrix before deactivation It can be expressed as , then the corresponding ( ⁇ - ⁇ ) strip activation matrix between the four elimination matrix c (ie update coefficient) can be passed the formula: pp _ p p- ⁇ p ⁇ ,
- the offset matrix ⁇ ⁇ (ie the update factor) between the ( MN ) strip activation lines can be calculated by the formula:
- Method 4 Some deactivation scenarios (such as DSE or impedance matching after deactivation), after some deactivation, the channel between the remaining lines will change. At this point, you need to re-estimate ⁇ .
- the event that triggers the transition state is a deactivation event that causes a change in the channel between the central office and the remote end, re-estimating the crosstalk channel between the active lines, and utilizing the re-estimated between the active lines The channel acquires the update coefficient.
- VCE informs the active line to re-collect the Error sample and estimate the new channel with the new Error Sample
- the above update coefficient acquisition is the following line crosstalk cancellation matrix.
- the principle of the uplink crosstalk 4 update matrix update is the same as the downlink, it will not be described here.
- the method of the present invention is described in detail in the downlink implementation, energy saving and non-energy saving modes:
- Embodiment 3 As shown in FIG. 3, the first specific implementation of the method provided by the embodiment of the present invention in the downstream direction of the deactivation process may be:
- the N transceivers are switched to the deactivated execution state, and deactivating the N lines in the M lines includes:
- Step 301 Turn off the signal ⁇ ( ⁇ is 0) before the canceller corresponding to the deactivation line, and keep the transmission of the signal X d after the canceller corresponding to the deactivation line; continue to send ⁇ ', corresponding to the simulation of the deactivated line
- the front-end AFE needs to remain open;
- Step 302 updating the crosstalk cancellation matrix ⁇ ⁇ before the activation line.
- Step 303 turning off the TU-O of the central office transceiver corresponding to the deactivation line, and the TU-0 becomes silent or The idle state, since all are turned off, at this time and all of the 0 is deactivated, the flow is completed, and the line enters the idle state (L3 state).
- Embodiment 4 As shown in FIG. 4, the second specific implementation of the method in the deactivation process in the deactivation process may be:
- the one transceiver switches to the deactivation execution state, and deactivating the purlin line in the pur line includes: closing the signal before the canceller corresponding to each deactivation line in the pur line, and simultaneously turning off The analog front end corresponding to each deactivation line in the spur line; the signal compensation of the cancellation signal of the ( ⁇ - ⁇ ) active lines generates an offset output signal.
- Step 401 Turn off the signal ⁇ before the canceller corresponding to the deactivation line, and turn off the analog front end corresponding to the deactivation line.
- the analog front end When the analog front end is turned off, the signal of the corresponding canceled signal cannot be transmitted, and both are 0 .
- Step 402 Obtain a crosstalk cancellation matrix ⁇ ⁇ before the active line is activated.
- Step 403 after the coefficient update is completed, the deactivation process is completed, and the deactivated line enters an idle state (L3 state).
- Embodiment 5 As shown in FIG. 5, the first specific implementation of the uplink direction of the method provided by the embodiment of the present invention in the deactivation process may be:
- the switching of the transceivers to the deactivation execution state includes: maintaining the continued reception of the uplink signals of each of the transceiver analog front ends of the transceivers.
- Step 501 The central transceiver TU-0 notifies the remote transceiver TU-R to turn off the sending signal.
- Step 502 The TU-R turns off the sending signal.
- Step 503 After confirming that the TU-R turns off the transmission signal, apply an update coefficient (ie, update the crosstalk cancellation coefficient between the (MN) active lines by using an update coefficient).
- the TU-R close transmission signal can be confirmed by any of the following methods:
- the TU-R After receiving the close command, the TU-R sends a message to the TU-0. The signal is turned off at the determined time point after the message. After receiving the TU-R's shutdown response, the TU-0 determines the TU-R to turn off the transmission signal.
- the TU-R After receiving the shutdown command, the TU-R directly turns off the signal.
- the TU-0 starts signal detection it is found that the transmission signal of the TU-R disappears, and the TU-R is turned off.
- Disorderly shutdown event Since the TU-R is powered off, or the subscriber line is cut, the TU-0 cannot communicate with the TU-R. At this time, the uplink deactivation process directly confirms that the TU-R turns off the transmission signal, and the TU-0 determines that the TU-R is not in place by the detection, and performs the subsequent steps.
- Step 504 after the coefficient is updated, the entire TU-0 is closed, and the deactivation process is completed.
- Embodiment 6 As shown in FIG. 6, the second specific implementation of the uplink direction of the method provided by the embodiment of the present invention in the deactivation process may be:
- the N transceivers are switched to the deactivated execution state, and deactivating the N lines in the M lines includes:
- Signal compensation for the cancellation signal of (M-N) active lines produces an offset output signal.
- the line can be turned off until the coefficient is updated. This is not conducive to energy saving.
- the method in this embodiment provides an energy-saving mode, and the specific implementation is as follows:
- Step 601 The central transceiver TU-0 notifies the remote transceiver that the TU-R turns off the sending signal; Step 602, the TU-R turns off the sending signal;
- Step 603 after confirming that the TU-R turns off the sending signal, turning off the analog front end of the TU-0 of the deactivated line; At this time, since the analog front end is turned off, the signal for deactivating the line entering the canceller is not available, and is all 0. Therefore, while the TU-0 analog front end is turned off, the offset signal t of the active line must be compensated to avoid crosstalk cancellation between the remaining lines.
- Step 604 Apply the update coefficient w ⁇ (ie, update the crosstalk cancellation coefficient between the (MN) active lines with the update coefficient).
- Step 605 after the coefficient update is completed, the deactivation process is completed, and the deactivated line enters the L3 (idle) state.
- the present invention further provides a deactivation system in a crosstalk scenario, where the system includes M transceivers and a canceller at a central office end, wherein data is transmitted through the M lines, and
- a canceller crosstalks M lines
- the system includes:
- the transceiver 701 is in the state of transmitting data showtime, if an event of triggering a state transition is detected, the N transceivers switch to the deactivation execution state, and deactivate the N lines in the M lines; wherein, M and N is a positive integer;
- the canceller 702 obtains an update coefficient for updating a crosstalk cancellation coefficient between (MN) strip activation lines, updates a crosstalk cancellation coefficient between the (MN) active lines by using the update coefficient, and controls deactivation execution
- the state transceiver enters a silent or idle state and is deactivated.
- the canceller 702 is further configured to acquire the update coefficient by deactivating a crosstalk channel before the execution state and/or deactivating a crosstalk cancellation coefficient before the execution state.
- the implementation of the deactivation execution state in which the transceiver is switched to the downstream direction in the deactivation process can be implemented in the following two ways:
- Mode 1 the downlink normal mode:
- the transceiver 701 turns off the downlink signal before the canceller corresponding to each of the N lines, and maintains the state switching of each of the N transceivers to continue transmitting information. Go to the activation state.
- the transceiver 701 turns off the signal before the canceller corresponding to each deactivation line in the N lines, and turns off the analog front end corresponding to each deactivated line in the N lines to switch to the deactivated execution state;
- the canceller 702 is further configured to perform signal compensation on the cancellation signals of the (M-N) active lines to generate an offset output signal. .
- the transceiver 701 maintains the continued reception of the uplink signal of each of the N transceivers to the deactivation execution state.
- the transceiver 701 turns off the analog front end of each of the N lines to switch to the deactivated execution state
- the canceller 702 is further configured to perform signal compensation on the cancellation signals of the (M-N) active lines to generate an offset output signal.
- the transceiver state change and the crosstalk strong cancellation matrix update are combined to avoid deactivation and reception.
- the signal affects the stability of other lines in the Vector system.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection between the various components shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software function unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
- ROM read-only memory
- RAM random access memory
- magnetic disk or an optical disk and the like, which can store program codes.
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Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016543283A JP6246374B2 (ja) | 2013-09-18 | 2013-09-18 | クロストークシナリオにおける非アクティブ化方法及びシステム |
MYPI2016700964A MY175255A (en) | 2013-09-18 | 2013-09-18 | Deactivation method and system in crosstalk scenario |
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CN201380001413.5A CN104641566B (zh) | 2013-09-18 | 2013-09-18 | 一种串扰场景下的去激活方法及系统 |
RU2016114829A RU2637514C2 (ru) | 2013-09-18 | 2013-09-18 | Способ и система дезактивизации в сценарии перекрестных помех |
KR1020167009797A KR101819013B1 (ko) | 2013-09-18 | 2013-09-18 | 크로스토크 상황에서의 비활성화 방법 및 시스템 |
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US9722765B2 (en) * | 2013-10-17 | 2017-08-01 | Ikanos Communications, Inc. | Method and apparatus for managing processing in TDD frames to enable power dissipation reduction |
WO2015179558A1 (en) * | 2014-05-20 | 2015-11-26 | Ikanos Communications, Inc. | Method and apparatus for updating fext coefficients for g.fast vectoring with discontinuous operation |
US9912376B2 (en) * | 2014-07-15 | 2018-03-06 | Adtran, Inc. | Managing crosstalk in vectored transmissions |
US10038473B2 (en) * | 2015-01-30 | 2018-07-31 | Alcatel Lucent | Methods and systems for reducing crosstalk via stabilized vectoring control |
CN109981139B (zh) * | 2019-03-29 | 2021-11-19 | 湖北师范大学 | 一种降低g.fast端口串扰的方法、设备及存储介质 |
CN110601721B (zh) * | 2019-10-23 | 2024-07-19 | 四川灵通电讯有限公司 | 数字用户线的功耗动态管理装置及应用方法 |
CN112751792B (zh) * | 2019-10-31 | 2022-06-10 | 华为技术有限公司 | 一种信道估计方法及装置 |
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EP3035550B1 (en) | 2017-11-08 |
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EP3322098A1 (en) | 2018-05-16 |
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AU2013401044B2 (en) | 2017-07-27 |
US20160197646A1 (en) | 2016-07-07 |
BR112016005954A2 (pt) | 2017-08-01 |
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KR101819013B1 (ko) | 2018-01-16 |
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