CN104025528B - A kind of execution methods, devices and systems of online reconfiguration - Google Patents
A kind of execution methods, devices and systems of online reconfiguration Download PDFInfo
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- CN104025528B CN104025528B CN201280019521.0A CN201280019521A CN104025528B CN 104025528 B CN104025528 B CN 104025528B CN 201280019521 A CN201280019521 A CN 201280019521A CN 104025528 B CN104025528 B CN 104025528B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
A kind of execution methods, devices and systems of online reconfiguration are the embodiment of the invention provides, is related to communication technical field, methods described includes：In crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of the destination channel obtains the signal to noise ratio of each subchannel of the destination channel；When the signal to noise ratio that there is subchannel is less than default first threshold, the receiving terminal keep the subchannel transmission power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the online reconfiguration OLR adjusted values of the carrying bit number of the subchannel；The receiving terminal notifies the transmitting terminal of the destination channel, the carrying bit number of the subchannel is adjusted into the OLR adjusted values, and keep the transmission power gain of the subchannel constant.Using the present invention, the stability of circuit in crosstalk channels estimation procedure can be lifted.
Description
Technical field
The present invention relates to communication technical field, the execution methods, devices and systems of more particularly to a kind of online reconfiguration.
Background technology
xDSL（X Digital Subscriber Line, various types of digital subscriber lines）It is a kind of double in phone
The Highspeed Data Transmission Technology of twisted wire transmission, using Discrete Multitone Modulation.In xDSL networks, server carries a plurality of
XDSL circuits, every circuit can carry multiple work subchannel on different frequency bands.
In xDSL networks, the circuit in init state is referred to as joinin after activation（New activation）Circuit（For example,
User's request connection network after in etc. it is to be connected during, then connect the circuit as joinin lines of the user terminal
Road）, by the circuit referred to as showtime in state of reaching the standard grade after initial phase（Reach the standard grade）Circuit.
During data are transmitted, the signal to noise ratio of circuit may become each circuit with outside environmental elements
Change, and, the signal to noise ratio in each subchannel is likely to change, and the signal to noise ratio of presumable subchannel diminishes, and has
Become big.According to aromatic formula C=Blog2 (1+S/N)（Wherein, C is channel capacity, and B is signal bandwidth, and S is signal energy, and N is
Noise energy）Carrying out derivation can draw, have following relational expression in xDSL systems（1）：
Wherein, i is subchannel number, b（i）For the bit number that subchannel is carried（Belong to the sub- letter in each data frame
The bit number of the data in road）, SNR（i）It is the signal to noise ratio in subchannel, g（i）It is the transmission power gain of subchannel, CG
（Coding Gain, coding gain）It is preset parameter value, Gap is preset parameter value, and Margin is signal to noise ratio surplus, signal to noise ratio
The numerical value of surplus may decide that the bit error rate of channel.
When the signal to noise ratio of subchannel declines, signal to noise ratio surplus can also decline accordingly, when signal to noise ratio surplus drops to one
After determining degree, the bit error rate that may result in circuit is improved, and is resulted even in and is gone offline.
In order to solve this problem, OLR is proposed in the prior art（On Line Reshuffle, online reconfiguration）Skill
Art.Online reconfiguration is directed to showtime circuits, when certain channel in circuit（Up channel or down channel）Subchannel
Signal to noise ratio declines when to a certain extent, to the b of each subchannel of the channel（i）And g（i）Online reconfiguration is carried out, it is determined that needing
Adjust the b of which subchannel（i）And the g of which subchannel（i）, and determine corresponding b（i）And g（i）OLR adjusted values, and
By the configured transmission b in respective sub-channel（i）、g（i）Corresponding OLR adjusted values are adjusted to, so as to ensure that signal to noise ratio surplus will not
Too low numerical value is dropped to, to ensure the stability of circuit.
Can exist in xDSL networks, between each circuit and interfere, referred to as crosstalk, crosstalk can be divided into NEXT（Near
End Cross-Talk, near-end cross）And FEXT（Far End Cross-Talk, far-end cross talk）, near-end cross is equipment
Receiving signal is subject to the transmission signal of proximal device to disturb, and far-end cross talk is the remote equipment that is subject to of reception signal of equipment
The interference of transmission signal.Near-end cross does not produce too much influence to the performance of system, typically can be ignored.Far-end cross talk
Channel speed can be produced serious influence, cause system unstable, or even circuit cannot be opened.
For far-end cross talk, industry proposes crosstalk counteracting（Vectored-DSL）Technology.In Vectored-DSL technologies
In, first, in certain frequency range, the transfer function H to crosstalk channels calculates, and H is a matrix, the matrix m rows n-th
The element of row is transmission equations of the circuit n to circuit m, for reflecting the crosstalk that circuit n is produced to circuit m.Then, counted according to H
Corresponding pre-coding matrix is calculated, precoding is carried out to transmission signal, to offset crosstalk.When carrying out precoding to transmission signal, pass
Defeated relational expression can be Y=FHPGX+N, wherein, X is transmission signal（The transmission signal of each circuit constitutes a vector）, Y is to connect
The collection of letters number（The reception signal of each circuit constitutes a vector）, F is FEQ（Frequency-domain Equalization, frequency
Domain is balanced）Gain, P is pre-coding matrix, and G is the transmission power gain matrix of transmitting terminal, and N can ignore for interchannel noise.
During H is calculated, in designated frequency band, leading for the determination of route is modulated on the synchronizing symbol of each circuit
Frequency sequence is transmitted（Pilot frequency sequence is the bit sequence of 0 and 1 composition of designated length, by pilot frequency sequence each
It is modulated in order on each synchronizing symbol and sequentially sends）, then the error sample that will be received on each circuit and the letter for sending
Number carry out comparing calculating accordingly, obtain the transfer function of the crosstalk channels in the frequency range.In a crosstalk channels estimation procedure
（Or channel training process）In be sent, it is necessary to the pilot frequency sequence on each circuit is all modulated, calculating process could be completed.
And in the modulation transmission process of pilot frequency sequence, each circuit is in the frequency range（I.e. in corresponding subchannel）Transmission power
Gain g（i）Can not change, can then cause the crosstalk channels for finally calculating inaccurate in the event of changing.
Based on the above-mentioned introduction to OLR technologies and Vectored-DSL technologies in the prior art, it is known that, if in crosstalk letter
Online reconfiguration is carried out in road estimation procedure, then the estimation of crosstalk channels can be caused to make a mistake.It is existing for this technical problem
The solution that technology is typically used is, in crosstalk channels estimation procedure, OLR functions is closed, so as to ensure that crosstalk channels are estimated
The accuracy of meter.
Realize it is of the invention during, inventor find prior art at least there are the following problems：
In the prior art, the process of circuit initialization can carry out the estimation procedure of multiple crosstalk channels, and taking altogether can
The time of 1-3 minutes, and the tracking after circuit initialization terminates can be had（Online）Stage also wants entering for discontinuity
The estimation procedure of row crosstalk channels, if will be closed OLR functions in these times, it will serious influences the steady of circuit
It is qualitative.
The content of the invention
In order to lift the stability of circuit in crosstalk channels estimation procedure, the embodiment of the invention provides and a kind of match somebody with somebody again online
The execution methods, devices and systems put.The technical scheme is as follows：
A kind of execution method of online reconfiguration, methods described includes：
In crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of the destination channel obtains the target letter
The signal to noise ratio of each subchannel in road；
When the signal to noise ratio that there is subchannel is less than default first threshold, the receiving terminal is keeping the hair of the subchannel
Penetrate power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the online weight of the carrying bit number of the subchannel
Configuration OLR adjusted values；
The receiving terminal notifies the transmitting terminal of the destination channel, and the carrying bit number of the subchannel is adjusted into described
OLR adjusted values, and keep the transmission power gain of the subchannel constant.
Preferably, the receiving terminal of the destination channel obtains the signal to noise ratio of each subchannel of the destination channel, specially：
The receiving terminal of destination channel obtains the signal to noise ratio of each subchannel of the destination channel according to the default cycle.
Preferably, the receiving terminal keep the subchannel transmission power gain it is constant on the premise of, according to the sub- letter
The signal to noise ratio in road, determines the OLR adjusted values of the carrying bit number of the subchannel, specially：
The receiving terminal is according to the current transmission power gain of the subchannel, default signal to noise ratio surplus and the subchannel
Signal to noise ratio, determines the carrying bit number of the subchannel, used as the OLR adjusted values of the carrying bit number of the subchannel.
Preferably, also include：
It is described when the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold less than first threshold
According to the signal to noise ratio of each subchannel, transmission power gain and carrying bit number to each subchannel are weighed receiving terminal online
Configuration, it is determined that needing transmission power gain and the carrying bit number being adjusted, and the OLR of corresponding transmission power gain to adjust
The OLR adjusted values of whole value and carrying bit number；
The receiving terminal notifies the transmitting terminal, by the transmission power gain for needing to be adjusted and carrying bit number
It is adjusted to corresponding OLR adjusted values.
Preferably, also include：Receiving terminal carries mark of the request to message prior treatment in for the message for notifying.
Preferably, when the signal to noise ratio that there is subchannel is less than default Second Threshold, also include：
Interrupt and skip current crosstalk channels estimation procedure.
A kind of receiving terminal of destination channel, the receiving terminal includes：
Acquisition module, in crosstalk channels estimation procedure is carried out to destination channel, obtaining each sub- letter of destination channel
The signal to noise ratio in road；
Determining module, for when the signal to noise ratio that there is subchannel is less than default first threshold, keeping the subchannel
Transmission power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the subchannel carrying bit number
Line reconfigures OLR adjusted values；
The carrying bit number of the subchannel is adjusted to institute by notification module, the transmitting terminal for notifying the destination channel
OLR adjusted values are stated, and keeps the transmission power gain of the subchannel constant.
Preferably, the acquisition module, specifically for：
According to the default cycle, the signal to noise ratio of each subchannel of the destination channel is obtained.
Preferably, the determining module, specifically for：
According to the signal to noise ratio of the subchannel current transmission power gain, default signal to noise ratio surplus and the subchannel, really
The carrying bit number of the fixed subchannel, as the OLR adjusted values of the carrying bit number of the subchannel.
Preferably, also it is used for including emergent management module：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold less than first threshold, according to
The signal to noise ratio of each subchannel, transmission power gain and carrying bit number to each subchannel carry out online reconfiguration, it is determined that
The transmission power gain that is adjusted of needs and carry bit number, and corresponding transmission power gain OLR adjusted values and hold
Carry the OLR adjusted values of bit number；
The transmitting terminal is notified, the transmission power gain for needing to be adjusted and carrying bit number are adjusted to corresponding
OLR adjusted values.
Preferably, the emergent management module, is additionally operable to：
Receiving terminal carries mark of the request to message prior treatment in for the message for notifying.
Preferably, the emergent management module, is additionally operable to：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, interrupts and skip current crosstalk channels and estimate
Process.
A kind of execution system of online reconfiguration, the system includes the transmitting terminal and target as described above of destination channel
The receiving terminal of channel, wherein：
The transmitting terminal, for after the notice for receiving the receiving terminal, notifying to need to be adjusted according to described
Transmission power gain and/or carry bit number be adjusted to corresponding OLR adjusted values.
The beneficial effect of technical scheme provided in an embodiment of the present invention is：
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
When the signal to noise ratio for detecting certain subchannel of the destination channel declines, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic flow sheet of the execution method of online reconfiguration provided in an embodiment of the present invention；
Fig. 2 be online reconfiguration provided in an embodiment of the present invention execution method in carrying showing of being adjusted of bit number
It is intended to；
Fig. 3 is the schematic flow sheet of the execution method of online reconfiguration provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the performs device of online reconfiguration provided in an embodiment of the present invention；
Fig. 5 is the structural representation of the performs device of online reconfiguration provided in an embodiment of the present invention；
Fig. 6 is the structural representation of the execution system of online reconfiguration provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
A kind of execution method of online reconfiguration is the embodiment of the invention provides, as shown in figure 1, the handling process of the method
The steps can be included：
Step 101, in crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of destination channel obtains the target
The signal to noise ratio of each subchannel of channel.
Step 102, when the signal to noise ratio that there is subchannel is less than default first threshold, receiving terminal is keeping the subchannel
Transmission power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the OLR of the carrying bit number of the subchannel
Adjusted value.
Step 103, receiving terminal notifies the transmitting terminal of destination channel, and the carrying bit number of the subchannel is adjusted into the OLR
Adjusted value, and keep the transmission power gain of the subchannel constant.
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
When the signal to noise ratio for detecting certain subchannel of the destination channel declines, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
Embodiment two
A kind of execution method of online reconfiguration is the embodiment of the invention provides, the executive agent of the method can be target
Channel（Up channel or down channel）Receiving terminal, the receiving terminal can be that server can also be terminal, for up letter
Road, its receiving terminal is the server of network side, and for down channel, its receiving terminal is the terminal of user side.Below in conjunction with tool
The implementation method of body is described in detail to the handling process shown in Fig. 1, and particular content is as follows.
Step 101, in crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of destination channel obtains the target
The signal to noise ratio of each subchannel of channel.
In xDSL systems, up channel and down channel use different frequency ranges in the line, so for certain
Individual channel, after it is determined that it is up channel or down channel, it becomes possible to clear and definite its receiving terminal.For channel and its son letter
The measurement of the signal to noise ratio in road, is carried out by the receiving terminal of the channel, i.e., the signal to noise ratio of down channel needs to be surveyed by terminal
Amount, the signal to noise ratio of up channel needs to be measured by server.
Trigger event, detection of the triggering to the signal to noise ratio of each subchannel can be pre-set.Preferably, the trigger event can
To be to reach the default cycle, that is, the receiving terminal of destination channel obtains each subchannel of destination channel according to the default cycle
Signal to noise ratio.
Step 102, when the signal to noise ratio that there is subchannel is less than default first threshold, receiving terminal is keeping the subchannel
Transmission power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the OLR of the carrying bit number of the subchannel
Adjusted value.
Wherein, the setting of first threshold can be according to formula（1）, ensureing certain signal to noise ratio surplus（Such as larger than 6dB）'s
On the basis of, corresponding signal to noise ratio is calculated as the first threshold.
Preferably, the constant treatment for calculating the OLR adjusted values for carrying bit number of holding transmission power gain in step 102
Mode, can use in crosstalk channels estimation procedure, when crosstalk channels estimation is not carried out, can use traditional OLR
Processing mode.
Specifically, receiving terminal can according to the current transmission power gain of the subchannel, default signal to noise ratio surplus and should
The signal to noise ratio of subchannel, determines the carrying bit number of the subchannel, used as the OLR adjusted values of the carrying bit number of the subchannel.
Calculating process can be according to formula（1）, wherein, CG and Gap is preset parameter, by the current transmission power gain g of subchannel
（i）, default signal to noise ratio surplus and the current signal to noise ratio of the subchannel be brought into formula（1）In i.e. can obtain a b（i）Value, the b
（i）Value is in g（i）B when keeping constant（i）OLR adjusted values.Default signal to noise ratio surplus can be no less than certain value
（6dB）Scope.
When the signal to noise ratio that there is subchannel is less than default first threshold, if destination channel does not carry out crosstalk channels
Estimation procedure, then receiving terminal can be according to the signal to noise ratio of each subchannel, transmission power gain and carrying bit to each subchannel
Number carries out online reconfiguration, it is determined that needing transmission power gain and the carrying bit number being adjusted, and launches work(accordingly
The OLR adjusted values of rate gain and the OLR adjusted values of carrying bit number.Hereafter, receiving terminal can notify the transmitting terminal of destination channel,
The transmission power gain and carrying bit number that this needs is adjusted are adjusted to corresponding OLR adjusted values.
It is noted herein that, the crosstalk channels estimation procedure of up channel and down channel is separate carrying out
's.For example, in the G.993.5 circuit initialization procedure of standard definition, the O-P-VECTOR2 stages are the crosstalk letters of down channel
Road estimation procedure, in this stage, the OLR treatment for the up channel in circuit can then use traditional OLR treatment sides
Formula, for the OLR treatment of down channel in circuit（Signal to noise ratio is less than first threshold）Then can be using the treatment of step 101-103
Mode（Can be described as simple（Simply）OLR processing modes）.Again for example, the R-P-VECTOR1-2 stages are the crosstalks of up channel
Channel estimation process, in this stage, the OLR treatment for the down channel in circuit can then use traditional OLR treatment
Mode, for the OLR treatment of up channel in circuit（Signal to noise ratio is less than first threshold）Then can be using the place of step 101-103
Reason mode.
Step 103, receiving terminal notifies the transmitting terminal of destination channel, and the carrying bit number of the subchannel is adjusted into the OLR
Adjusted value, and keep the transmission power gain of the subchannel constant.When destination channel is up channel, its transmitting terminal is then for eventually
End, when destination channel is down channel, its transmitting terminal is then server.
Specifically, above-mentioned notice can be specially OLR requests, receiving terminal can generate OLR requests, be taken in OLR requests
The OLR adjusted values of the carrying bit number of the subchannel with determining in step 102, and OLR requests are sent to destination channel
Transmitting terminal, transmitting terminal can send acknowledgement notification after receiving and receiving OLR requests to receiving terminal.Receiving terminal can be in OLR
The new parameter entry-into-force time is carried in request, transmitting terminal can notify that corresponding performing module prepares herein after OLR requests are received
The new parameter entry-into-force time performs new parameter（The OLR adjusted values of the carrying bit number of the subchannel）, receiving terminal receiving really
Recognize and also notify that corresponding performing module prepares to perform new parameter in this new parameter entry-into-force time after notifying.In addition, if sending
End judges not support that the OLR for receiving is asked that then sending refusal to receiving terminal notifies.
Wherein, OLR request messages, can use traditional OLR request messages, and the g that will wherein record（i）Value is set to
The current g of the subcarrier（i）Value.Additionally, it is preferred that, new OLR request message types can be built, simple can be named as
OLR request messages.Specifically, the type of message of the new structure is to traditional Type3（Type 3）OLR request messages son
Carrier parameter domain（The penultimate field of message）Modify and obtain.Subcarrier parameter field includes 4 bytes, in new structure
In the type of message built, this 4 forms of byte can be [0000 iiii iiii iiii 0,000 0,000 0000
Bbbb], i represents the index of subcarrier（Index）, i.e. the mark of subcarrier, b is then b（i）OLR adjusted values.
In fig. 2, give to b（i）The schematic diagram being adjusted, middle figure is initial each b of circuit normal work
（i）View, the figure in left side is that subchannel is subject in the case that prior art closes OLR in crosstalk channels estimation procedure
Each b after interference（i）View, the figure on right side is to be adjusted by the simple OLR processing methods in the embodiment of the present invention
Each b after whole（i）View.
Flow above the embodiment of the present invention, general disturbed condition when giving signal to noise ratio less than default first threshold
Processing mode.In interference than in the case of more serious, signal to noise ratio is very low, if the carrying bit number at this moment going back sub-channel has
Certain requirement（Such as, it is desirable to carry bit number and cannot be below certain numerical value）, then following processing mode can be used：Work as subchannel
Signal to noise ratio less than default first threshold and during not less than default Second Threshold using the specific place of above-mentioned steps 101-103
Reason mode, when the signal to noise ratio of subchannel is less than default Second Threshold, using handling process as shown in Figure 3, specifically includes
Following steps：
Step 101, in crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of destination channel obtains the target
The signal to noise ratio of each subchannel of channel.
Step 102 ', when the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold is less than the first threshold
During value, according to the signal to noise ratio of each subchannel, transmission power gain and carrying bit number to each subchannel are carried out online receiving terminal
Reconfigure, it is determined that transmission power gain and the carrying bit number being adjusted are needed, and the OLR of transmission power gain accordingly
The OLR adjusted values of adjusted value and carrying bit number.
Wherein, Second Threshold can be as the case may be requirement is set, and for some situations, sub-channel does not hold
Carrying bit number has any requirement, then in this case, then it is 0 that can set Second Threshold.Preferably, holding in sub-channel
When load bit number is required, Second Threshold can be according to b（i）Required value, default signal to noise ratio surplus and current transmitting work(
Rate gain, by formula（1）To determine.
In the step, receiving terminal according to the signal to noise ratio of each subchannel, compare by transmission power gain and carrying to each subchannel
Special number carries out online reconfiguration, draws the calculating process of corresponding OLR adjusted values, and the calculating process with traditional OLR is similar, can be with
Carried out by the following two kinds mode：
One kind is that first, according to the signal to noise ratio of each subchannel, the carrying bit number to each subchannel is reassigned（Can
To keep carrying bit number summation constant）, it is determined that the carrying bit number of adjustment is needed, and each needs the carrying bit number of adjustment
OLR adjusted values；Then, based on reassignment after each subchannel carrying bit number, it is determined that need adjustment transmission power increase
Benefit, and each need adjustment transmission power gain OLR adjusted values.
Another kind is that first, according to the signal to noise ratio of each subchannel, the transmission power gain to each subchannel is reassigned
（Need to keep total transmission power no more than the upper limit of systemic presupposition）, it is determined that the transmission power gain of adjustment is needed, and each is needed
The OLR adjusted values of the transmission power gain to be adjusted；Then, based on reassignment after each subchannel transmission power gain, really
The carrying bit number of adjustment is needed calmly, and each needs the OLR adjusted values for carrying bit number of adjustment.
Step 103 ', receiving terminal notifies transmitting terminal, the transmission power gain that above-mentioned needs are adjusted and carrying bit
Number is adjusted to corresponding OLR adjusted values.
Specific notification procedure is similar to step 103, may be referred to specific descriptions above.
Preferably, receiving terminal is in the message for notifying（OLR request messages）It is middle to carry request to message prior treatment
Mark.In this step, OLR request messages can be in existing Type1（Class1）Or Type3（Type 3）OLR request report
The end of text increases a urgent optional（Urgent option）Field, for indicating opposite end to the treatment of this message prior.Hair
Sending end can be pre-configured with, to the message prior treatment with urgent optional fields.
Preferably, in the flow, when judging that the signal to noise ratio that there is subchannel is less than default Second Threshold, interrupt and jump
Cross current crosstalk channels estimation procedure.
Specifically, if receiving terminal is terminal, destination channel is down channel, in the crosstalk channels estimation procedure for carrying out
It is then that server sends pilot frequency sequence to terminal, at this moment terminal can terminate returning to the error sample for receiving to server
This, and server is receiving step 103 ' in notice when, then can stop sending pilot frequency sequence, and abandon this crosstalk
The related data of channel estimation process.If receiving terminal is server, destination channel is up channel, in the crosstalk letter for carrying out
Road estimation procedure is then that terminal sends pilot frequency sequence to server, and at this moment server can terminate the error sample to receiving
Originally recorded, and terminal is receiving step 103 ' in notice when, then can stop sending pilot frequency sequence, and abandon this
The related data of secondary crosstalk channels estimation procedure.
It is noted herein that, the crosstalk channels estimation procedure of up channel and down channel is separate carrying out
's.For example, in the G.993.5 circuit initialization procedure of standard definition, the O-P-VECTOR2 stages are the crosstalk letters of down channel
Road estimation procedure, in this stage, the OLR treatment for the up channel in circuit can then use traditional OLR treatment sides
Formula, for the OLR treatment of down channel in circuit（Signal to noise ratio is less than Second Threshold）Step 101,102 ', 103 ' can then be used
Processing mode（Can be described as urgent OLR processing modes）.Again for example, the R-P-VECTOR1-2 stages are the crosstalks of up channel
Channel estimation process, in this stage, the OLR treatment for the down channel in circuit can then use traditional OLR treatment
Mode, for the OLR treatment of up channel in circuit（Signal to noise ratio is less than Second Threshold）Then can using step 101,102 ',
103 ' processing mode.
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
When the signal to noise ratio for detecting certain subchannel of the destination channel declines, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
Embodiment three
Based on identical technology design, the embodiment of the present invention additionally provides a kind of receiving terminal of destination channel, such as Fig. 4 institutes
Show, the receiving terminal includes：
Acquisition module 410, in crosstalk channels estimation procedure is carried out to destination channel, obtaining each son of destination channel
The signal to noise ratio of channel；
Determining module 420, for when the signal to noise ratio that there is subchannel is less than default first threshold, keeping the sub- letter
On the premise of the transmission power gain in road is constant, according to the signal to noise ratio of the subchannel, the carrying bit number of the subchannel is determined
Online reconfiguration OLR adjusted values；
Be adjusted to for the carrying bit number of the subchannel by notification module 430, the transmitting terminal for notifying the destination channel
The OLR adjusted values, and keep the transmission power gain of the subchannel constant.
Preferably, the acquisition module 410, specifically for：
According to the default cycle, the signal to noise ratio of each subchannel of the destination channel is obtained.
Preferably, the determining module 420, specifically for：
According to the signal to noise ratio of the subchannel current transmission power gain, default signal to noise ratio surplus and the subchannel, really
The carrying bit number of the fixed subchannel, as the OLR adjusted values of the carrying bit number of the subchannel.
Preferably, also it is used for including emergent management module：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold less than first threshold, according to
The signal to noise ratio of each subchannel, transmission power gain and carrying bit number to each subchannel carry out online reconfiguration, it is determined that
The transmission power gain that is adjusted of needs and carry bit number, and corresponding transmission power gain OLR adjusted values and hold
Carry the OLR adjusted values of bit number；
The transmitting terminal is notified, the transmission power gain for needing to be adjusted and carrying bit number are adjusted to corresponding
OLR adjusted values.
Preferably, the emergent management module, is additionally operable to：
Receiving terminal carries mark of the request to message prior treatment in for the message for notifying.
Preferably, the emergent management module, is additionally operable to：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, interrupts and skip current crosstalk channels and estimate
Process.
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
When the signal to noise ratio for detecting certain subchannel of the destination channel declines, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
Example IV
Based on identical technology design, the embodiment of the present invention additionally provides a kind of performs device of online reconfiguration, the dress
The function of putting can be realized by the receiving terminal of destination channel, as shown in figure 5, described device can include the He of processor 510
Memory 520, the processor 510 and memory 520 are used to perform the execution method of following online reconfiguration：
Obtain the signal to noise ratio of each subchannel of the destination channel；
When the signal to noise ratio that there is subchannel is less than default first threshold and during not less than default Second Threshold, keeping
On the premise of the transmission power gain of the subchannel is constant, according to the signal to noise ratio of the subchannel, the carrying ratio of the subchannel is determined
The online reconfiguration OLR adjusted values of special number；
The transmitting terminal of the destination channel is notified, the carrying bit number of the subchannel is adjusted to the OLR adjusted values, and
Keep the transmission power gain of the subchannel constant.
Preferably, the signal to noise ratio of each subchannel for obtaining the destination channel, specially：
According to the default cycle, the signal to noise ratio of each subchannel of the destination channel is obtained.
Preferably, it is described when the signal to noise ratio that there is subchannel is less than default first threshold and not less than default second threshold
During value, keep the subchannel transmission power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the sub- letter
The OLR adjusted values of the carrying bit number in road, specially：
When the signal to noise ratio that there is subchannel is less than default first threshold and during not less than default Second Threshold, if institute
Destination channel is stated carrying out crosstalk channels estimation procedure, then keep the subchannel transmission power gain it is constant on the premise of,
According to the signal to noise ratio of the subchannel, the OLR adjusted values of the carrying bit number of the subchannel are determined.
Preferably, it is described keep the subchannel transmission power gain it is constant on the premise of, according to the letter of the subchannel
Make an uproar and compare, determine the OLR adjusted values of the carrying bit number of the subchannel, specially：
According to the signal to noise ratio of the subchannel current transmission power gain, default signal to noise ratio surplus and the subchannel, really
The carrying bit number of the fixed subchannel, as the OLR adjusted values of the carrying bit number of the subchannel.
Preferably, also include：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, according to the signal to noise ratio of each subchannel, to described
The transmission power gain of each subchannel and carrying bit number carry out online reconfiguration, it is determined that needing the transmission power being adjusted to increase
Benefit and carrying bit number, and the OLR adjusted values of transmission power gain and the OLR adjusted values for carrying bit number accordingly；
The transmitting terminal is notified, the transmission power gain for needing to be adjusted and carrying bit number are adjusted to corresponding
OLR adjusted values.
Preferably, also include：Mark of the request to message prior treatment is carried in for the message for notifying.
Preferably, when the signal to noise ratio that there is subchannel is less than default Second Threshold, if the destination channel is being entered
Row crosstalk channels estimation procedure, then also include：
Interrupt and skip current crosstalk channels estimation procedure.
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
Detect certain subchannel of the destination channel signal to noise ratio it is relatively low when, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
Embodiment five
Based on identical technology design, the embodiment of the present invention additionally provides a kind of execution system of online reconfiguration, such as Fig. 6
Shown, the system includes the transmitting terminal 610 of destination channel and the receiving terminal 620 of the destination channel as described in above-mentioned embodiment,
Wherein：
The transmitting terminal 610, for after the notice for receiving the receiving terminal, notifying to need to be adjusted according to described
Whole transmission power gain and/or carrying bit number is adjusted to corresponding OLR adjusted values.
In the embodiment of the present invention, in crosstalk channels estimation procedure is carried out to destination channel, when the receiving terminal of destination channel
Detect certain subchannel of the destination channel signal to noise ratio it is relatively low when, then calculate constant in the transmission power gain of the subchannel
When, the OLR adjusted values of the carrying bit number of the subchannel, and the transmitting terminal of destination channel is notified, by the carrying ratio of the subchannel
Special number is adjusted to the OLR adjusted values, and keeps the transmission power gain of the subchannel constant.So, estimated in crosstalk channels
Cheng Zhong, without closing OLR functions, can lift the stability of circuit in crosstalk channels estimation procedure.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, it is also possible to instruct the hardware of correlation to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (11)
1. a kind of execution method of online reconfiguration, it is characterised in that methods described includes：
In crosstalk channels estimation procedure is carried out to destination channel, the receiving terminal of the destination channel obtains the destination channel
The signal to noise ratio of each subchannel；
When the signal to noise ratio that there is subchannel is less than default first threshold, the receiving terminal is keeping the transmitting work(of the subchannel
On the premise of rate gain is constant, according to the signal to noise ratio of the subchannel, the online reconfiguration of the carrying bit number of the subchannel is determined
OLR adjusted values；
The receiving terminal notifies the transmitting terminal of the destination channel, and the carrying bit number of the subchannel is adjusted into the OLR adjusts
Whole value, and keep the transmission power gain of the subchannel constant；
Also include：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold less than first threshold, the reception
The signal to noise ratio according to each subchannel is held, the transmission power gain and carrying bit number to each subchannel match somebody with somebody again online
Put, it is determined that needing transmission power gain and the carrying bit number being adjusted, and the OLR of corresponding transmission power gain to adjust
The OLR adjusted values of value and carrying bit number；
The receiving terminal notifies the transmitting terminal, by the transmission power gain for needing to be adjusted and carrying bit number adjustment
It is corresponding OLR adjusted values.
2. the method for claim 1, it is characterised in that the receiving terminal of the destination channel obtains the destination channel
The signal to noise ratio of each subchannel, specially：
The receiving terminal of destination channel obtains the signal to noise ratio of each subchannel of the destination channel according to the default cycle.
3. the method for claim 1, it is characterised in that the receiving terminal is keeping the transmission power gain of the subchannel
On the premise of constant, according to the signal to noise ratio of the subchannel, the OLR adjusted values of the carrying bit number of the subchannel are determined, specially：
Noise of the receiving terminal according to the subchannel current transmission power gain, default signal to noise ratio surplus and the subchannel
Than the carrying bit number of the subchannel being determined, as the OLR adjusted values of the carrying bit number of the subchannel.
4. the method for claim 1, it is characterised in that also include：Receiving terminal is carried in for the message for notifying please
Seek the mark to message prior treatment.
5. the method for claim 1, it is characterised in that when the signal to noise ratio that there is subchannel is less than default Second Threshold
When, also include：
Interrupt and skip current crosstalk channels estimation procedure.
6. a kind of receiving terminal of destination channel, it is characterised in that the receiving terminal includes：
Acquisition module, in crosstalk channels estimation procedure is carried out to destination channel, obtaining each subchannel of destination channel
Signal to noise ratio；
Determining module, for when the signal to noise ratio that there is subchannel is less than default first threshold, keeping the hair of the subchannel
Penetrate power gain it is constant on the premise of, according to the signal to noise ratio of the subchannel, determine the online weight of the carrying bit number of the subchannel
Configuration OLR adjusted values；
The carrying bit number of the subchannel is adjusted to the OLR by notification module, the transmitting terminal for notifying the destination channel
Adjusted value, and keep the transmission power gain of the subchannel constant；
Also include emergent management module, be used for：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, and Second Threshold less than first threshold, according to each son
The signal to noise ratio of channel, transmission power gain and carrying bit number to each subchannel carry out online reconfiguration, it is determined that needing
The transmission power gain being adjusted and carrying bit number, and the OLR adjusted values of corresponding transmission power gain compare with carrying
The OLR adjusted values of special number；
The transmitting terminal is notified, the transmission power gain for needing to be adjusted and carrying bit number are adjusted to corresponding
OLR adjusted values.
7. receiving terminal as claimed in claim 6, it is characterised in that the acquisition module, specifically for：
According to the default cycle, the signal to noise ratio of each subchannel of the destination channel is obtained.
8. receiving terminal as claimed in claim 6, it is characterised in that the determining module, specifically for：
According to the signal to noise ratio of the subchannel current transmission power gain, default signal to noise ratio surplus and the subchannel, it is determined that should
The carrying bit number of subchannel, as the OLR adjusted values of the carrying bit number of the subchannel.
9. receiving terminal as claimed in claim 6, it is characterised in that the emergent management module, is additionally operable to：
Receiving terminal carries mark of the request to message prior treatment in for the message for notifying.
10. receiving terminal as claimed in claim 6, it is characterised in that the emergent management module, is additionally operable to：
When the signal to noise ratio that there is subchannel is less than default Second Threshold, interrupts and skip current crosstalk channels and estimated
Journey.
11. a kind of execution systems of online reconfiguration, it is characterised in that the system includes the transmitting terminal of destination channel and as weighed
Profit requires the receiving terminal of the destination channel described in any one of 6-10, wherein：
The transmitting terminal, for after the notice for receiving the receiving terminal, according to the hair for notifying and needing to be adjusted
Penetrate power gain and/or carry bit number and be adjusted to corresponding OLR adjusted values.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/087005 WO2014094273A1 (en) | 2012-12-20 | 2012-12-20 | On line reshuffle execution method, device and system |
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| Publication Number | Publication Date |
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| CN104025528A CN104025528A (en) | 2014-09-03 |
| CN104025528B true CN104025528B (en) | 2017-06-27 |
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| CN105991258B (en) | 2015-01-30 | 2019-05-17 | 富士通株式会社 | The Bit distribution method of multicarrier modulated signal, device and system |
| CN116569529A (en) * | 2020-12-28 | 2023-08-08 | 华为技术有限公司 | Bandwidth adjustment method, device and transmission equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321145A (en) * | 2007-06-07 | 2008-12-10 | 中兴通讯股份有限公司 | Method for on-line updating DSL parameter |
| CN101523753A (en) * | 2006-10-10 | 2009-09-02 | 华为技术有限公司 | System for emergency rate adjustment |
| CN101841389A (en) * | 2003-12-07 | 2010-09-22 | 适应性频谱和信号校正股份有限公司 | Adaptive FEC codeword management |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1569402A1 (en) * | 2004-02-26 | 2005-08-31 | Alcatel | Digital subscriber line modem with bitloading using channel condition model |
| US8442131B2 (en) * | 2008-01-14 | 2013-05-14 | Futurewei Technologies, Inc. | Power reduction for digital subscriber line |
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2012
- 2012-12-20 WO PCT/CN2012/087005 patent/WO2014094273A1/en active Application Filing
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841389A (en) * | 2003-12-07 | 2010-09-22 | 适应性频谱和信号校正股份有限公司 | Adaptive FEC codeword management |
| CN101523753A (en) * | 2006-10-10 | 2009-09-02 | 华为技术有限公司 | System for emergency rate adjustment |
| CN101321145A (en) * | 2007-06-07 | 2008-12-10 | 中兴通讯股份有限公司 | Method for on-line updating DSL parameter |
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| WO2014094273A1 (en) | 2014-06-26 |
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