CN101166045A - Uplink power down regulation method combining reference length and user power spectral density - Google Patents
Uplink power down regulation method combining reference length and user power spectral density Download PDFInfo
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- CN101166045A CN101166045A CNA2006101409798A CN200610140979A CN101166045A CN 101166045 A CN101166045 A CN 101166045A CN A2006101409798 A CNA2006101409798 A CN A2006101409798A CN 200610140979 A CN200610140979 A CN 200610140979A CN 101166045 A CN101166045 A CN 101166045A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
This invention relates to an UPBO method combining reference length and user power spectrum density(PSD) including the following steps: a, collecting and obtaining information of users and their line length to judge base units containing the user lines, b, automatically analyzing the collected information of length of user lines contained in a same base unit according to a requirement of service up-line band width and UPBO reference length method to form configuration parameters and reference length, if all user lines apply a same reference length in a same base unit but can not meet the requirement of up-line band width of services, it can configure different reference lengths and configures the PSD of user lines with smaller reference length and closes down part low frequency channels, c, transmitting the configured parameters to a related DSLAM to finish configuration to related user ports.
Description
Technical field
The present invention relates to digital communication system, uplink power down regulation method in the particularly a kind of DSL system.
Background technology
In xDSL used, the line that is in the same elementary cell (binder) was right, can produce each other to crosstalk.Crosstalking is the key factor that influences transmission performance, and especially, for VDSL, " near-far problem " may have a strong impact on the performance of up direction.Fig. 1 is a kind of common deployment diagram of VDSL.For convenience of description, two subscribers feeders have only been drawn, two subscribers feeder length differences.Under the rate adaptation pattern, at up direction, two CPE (user side equipment) will use maximum transmission power.User 1 upward signal is when arriving the A point, through one section Line Attenuation, at A point signal weakening.User 2 signal will produce stronger crosstalking to user 1, and this disturbs the ascending performance with severe exacerbation user 1.Cause user's 1 upstream rate to reduce, even link can not be stablized.And user 1 signal is because less after overdamping, therefore less to user's 2 influences.For " near-far problem ", the solution that VDSL proposes is that (Upstream Power Back-off: uplink power down regulation), promptly by suitable configuration, user 2 will suitably reduce uplink transmission power to UPBO, reduce the crosstalking of user 1, with the ascending performance that guarantees that user 1 is certain.
At present, UPBO is that the user is according to the right partial parameters of same elementary cell center line, these parameters normally electrical length of circuit distribute or situation such as ambient noise, come to determine suitable uplink transmission power for each subscribers feeder, have following problem in the current application:
1) need operator to remove to understand the electric circumstance of subscribers feeder, as electrical length, distribution situations such as ambient noise;
2) miscellaneous service that provides for the user may be different to the requirement of upstream bandwidth, and UPBO has also reduced upstream bandwidth reducing when up direction is crosstalked between circuit.Being configured in of UPBO reduces when crosstalking, and must take all factors into consideration professional demand;
3) need the attendant manually to go to dispose suitable parameters for each user;
4) the most frequently used UPBO method is the reference length method.When using this method, can only use essentially identical upstream bandwidth in reference length with all interior users, this has hindered the ability that multiple business is provided simultaneously in one " elementary cell ".
Can see from above-mentioned 4, present uplink power control mode, large-scale application obviously is disadvantageous to VDSL.
Because the diversity of user distribution, the diversity of business demand, and the requirement of user distribution situation and service bandwidth also may be often to change, therefore, one of needs can be taken all factors into consideration factors such as line conditions and different business demand, the Poewr control method of automation.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of DSL system uplink power decreasing method that can take all factors into consideration factors such as line conditions and different business demand.
A kind of uplink power down regulation method that combines reference length and user power spectral density degree comprises following steps:
(a) concentrate collection to obtain user and subscribers feeder length information, judge " elementary cell " that subscribers feeder is affiliated;
(b) subscribers feeder that same " elementary cell " comprised, according to the professional upstream bandwidth requirement that is provided with, automatically analyze the subscribers feeder length information that collects by the uplink power down regulation UPBO reference length method of setting, form user's configuration parameter, set the subscribers feeder reference length; When adopting identical reference length can not satisfy requiring of professional upstream bandwidth to all subscribers feeders in same " elementary cell ", then configurable different reference length, user power spectral density degree PSD to the less subscribers feeder of reference length is configured the closed portion low frequency channel simultaneously.
(c) unification of user's configuration parameter is sent to relevant Digital Subscriber Line Access Multiplexer DSLAM, finish the relative users configuring ports by DSLAM.
Described step (a)～(c) is automatically, periodically carries out; Or/and add new user, or the user withdraws from, or the distribution of line conditions changes, or user's business need re-executes when changing automatically.
Described step (a) is to gather user profile from the billing system/accounting system of operator and database, gathers subscribers feeder information from Digital Subscriber Line Access Multiplexer DSLAM or line test head.
Described step (c) if the actual disposition effect does not reach requirement, can be returned step (b) after finishing user's configuration, regenerates user's configuration parameter.
The uplink power down regulation method that the present invention proposes, with a plurality of subscribers feeders in the same elementary cell to doing as a whole the analysis, take all factors into consideration the service circuit performance demands, dispose each user, thereby realize the optimization of overall performance in conjunction with reference length method and PSD method.
Description of drawings
Fig. 1 is a cross-interference issue schematic diagram during VDSL disposes in the prior art;
Fig. 2 is a DSL system uplink power decreasing control system structured flowchart of the present invention;
Fig. 3 is an embodiment of the invention comprehensive power control method flow chart;
Fig. 4 is an embodiment of the invention VDSL power control section administration schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 2 is the structured flowchart of the DSL automatic power control system that proposes of the present invention, this system mainly comprises following module: information acquisition module, centralized control module, analysis-by-synthesis module and one or more DSLAM that link to each other with user side equipment by subscribers feeder (Digital Subscriber Line Access Multiplexer) also can comprise the one or more line test heads that link to each other with information acquisition module.Wherein:
Information acquisition module links to each other with equipment such as database, DSLAM with the billing system/accounting system of operator, gather user profile in real time from the billing system/accounting system and the database of operator, DSLAM or line test head are gathered subscribers feeder information in real time, and give the analysis-by-synthesis module with these information;
The analysis-by-synthesis module is judged " elementary cell " under the subscribers feeder, the subscribers feeder that same " elementary cell " comprised, according to the professional upstream bandwidth requirement that is provided with, automatically analyze the subscribers feeder information that collects by the uplink power down regulation UPBO method of setting, form user's configuration parameter and deliver to centralized control module;
Centralized control module sends to relevant DSLAM equipment with the unification of user's configuration parameter;
DSLAM equipment is finished the relative users configuring ports according to user's configuration parameter of receiving again.
Fig. 4 is that embodiment of the invention VDSL disposes schematic diagram, and 3 users are wherein arranged in same " elementary cell ".The user 1, and the user 2, and user 3 line length is respectively 1200m, 800m, and 400m also can be understood as 3 kinds of topmost distribution of lengths in certain " elementary cell ".
Step 1:
The DELT (Dual-Ended Loop Test) that possesses according to chip self, or SELT (Single Ended Loop Test) function perhaps use the line test head, measure the electrical length distribution situation of subscribers feeder, the electrical length of supposing 3 subscribers feeders among the figure is respectively 1200m, 800m, 400m;
This operation is finished by information acquisition module.
According to the information in the wire size database of operator, determine that 3 users belong to same " elementary cell ";
The business of supposing operator is carried out strategy and is: guarantee to open IPTV and two kinds of business of visual telephone for all users in the 1200m scope; User beyond this coverage only provides other services as the data service.Therefore, can determine that each user uses professional bandwidth requirement: downlink bandwidth is more than 14Mbps, and upstream bandwidth is more than 1Mbps;
Ideally, the influence that user 1,2,3 is not crosstalked, under suitable configuration, 3 users' link is up/and downstream rate can reach respectively: 4Mbps/24Mbps, 14Mbps/40Mbps, 28Mbps/60Mbps.When but 3 subscribers feeders are worked in same " elementary cell ", if ascending power is not controlled, then user 1,2 ascending performance will significantly reduce.User 1 upstream bandwidth may be lower than 1Mbps, even link can not be stablized.
Step 2:
Adopting the reference length method with UPBO is example, and reference length is one of parameter of VDSL line configuring.Use UPBO, increase the just upstream bandwidth that reference length reduces, it also is like this closing up low frequency channel.Automatically the purpose of configuration is exactly, under the situation of the minimum bandwidth requirement that guarantees customer service, and the broaden business range of application.Reference length is provided with and the simple relation of upstream bandwidth is exactly.Corresponding to certain channel, reference length roughly corresponding certain upstream bandwidth, set reference length and also just set upstream bandwidth.All circuits that are lower than reference length will be set up reference length, so these circuits will have similar upstream bandwidth, just the upstream bandwidth of reference length correspondence.
In this example, electrical length and the requirement in the 1200m scope according to each subscriber's line are these 3 business that the user opens, all 3 users' UPBO reference length can be set to 1200m, can guarantee that so the minimum upstream and downstream bandwidth of 3 users (user in the 1200m scope) can both satisfy the requirement of required business.
Step 3:
According to the result of step 1 and step 2, all 1200m scopes are set to 1200m with interior user's UPBO reference length.
More than each the step be the operation of finishing by the analysis-by-synthesis module.
The user's configuration parameter unification that obtains is sent to relevant DSLAM equipment (being finished by centralized control module), and DSLAM equipment is finished the relative users configuring ports according to user's configuration parameter of receiving again.
After finishing user's configuration,, can return step 2, regenerate user's configuration parameter if the actual disposition effect does not reach requirement.
Above step is carried out in real time, as carrying out at interval by setting-up time, perhaps add new user, or the user withdraws from, or the distribution of line conditions changes, or user's business need re-executes when changing automatically.
Suppose that variation has taken place the strategy that operator commences business, be preferably certain customers symmetrical 10Mbps is provided above business.Then in step 2, if the reference length of UPBO is still 1200m, then subscribers feeder length is that the user's of 800m upstream rate can not reach 10Mbps.Therefore can consider reference length is set at 800m, the user 2,3 in the 800m scope can obtain the above upstream bandwidth of 10Mbps like this.If, then may need to notify operator user's 3 cutovers need be arrived other " elementary cells " for the user 3 beyond the 800m scope continues to provide business such as IPTV and visual telephone.
In another embodiment, consider a complicated more requirement: need provide business more than the symmetrical 10Mbps with interior user for the 800m scope, also will guarantee to provide the upstream bandwidth of 1Mbps at least simultaneously for the user in the 1200m scope.Use above-mentioned UPBO method dying separately.Can consider to achieve the goal in conjunction with user power spectral density degree (PSD) configuration.
As everyone knows, on long subscribers feeder, the high-frequency signal decay is very fast, therefore uses more low frequency channel in long transmission line; And short subscribers feeder can use more high frequency channel, and its bandwidth is to have surpassed general demands of applications.If therefore can allow short circuit make full use of high frequency channel, satisfying under the situation of business need, leave low frequency channel for long circuit and use, the user in " elementary cell ", channel can be utilized on the whole more fully like this.The way of many reference lengths is, in the different reference length of different channel configurations.This realizes more complicated.
It is on short circuit that the present invention adopts a fairly simple realization, and low frequency channel is closed, and leave long circuit for and use, and itself still can use high frequency channel.Can take into account the bandwidth of long line and short-term like this.Concrete grammar in above-mentioned example is: the user's reference length in the 800m scope still is 800m, but uses the PSD configuration, the part low frequency channel is closed; And the above user's reference length still of 800m remains 1200m.This analytic process is carried out in step 2.
On the basis of the foregoing description, the present invention can also have various mapping modes.
For example, can adopt different UPBO implementations.The implementation of present UPBO has multiple, mainly comprises: reference frequency method, reference length method, many reference lengths method, balanced FEXT method and reference noise method.Basic ideas all are: selected reference quantity, according to the relation between the maximum transmit power of reference quantity and loss, standard code, calculate again with the transmitting power of each line in a bundle cable to using.Wherein the reference length method is that effect can be accepted, and than the method that is easier to realize.But the present invention is not limited to this.When adopting other implementation, just need to gather different parameters, need understand loop-length and noise or the like as the reference noise method.No matter adopt any mode, all can utilize system and method for the present invention to realize centralized collection information, focus on automation and dispose.
Claims (4)
1. uplink power down regulation method that combines reference length and user power spectral density degree comprises following steps:
(a) concentrate collection to obtain user and subscribers feeder length information, judge " elementary cell " that subscribers feeder is affiliated;
(b) subscribers feeder that same " elementary cell " comprised, according to the professional upstream bandwidth requirement that is provided with, automatically analyze the subscribers feeder length information that collects by the uplink power down regulation UPBO reference length method of setting, form user's configuration parameter, set the subscribers feeder reference length; When adopting identical reference length can not satisfy requiring of professional upstream bandwidth to all subscribers feeders in same " elementary cell ", then configurable different reference length, user power spectral density degree PSD to the less subscribers feeder of reference length is configured the closed portion low frequency channel simultaneously.
(c) unification of user's configuration parameter is sent to relevant Digital Subscriber Line Access Multiplexer DSLAM, finish the relative users configuring ports by DSLAM.
2. the method for claim 1 is characterized in that:
Described step (a)～(c) is automatically, periodically carries out; Or/and add new user, or the user withdraws from, or the distribution of line conditions changes, or user's business need re-executes when changing automatically.
3. the method for claim 1 is characterized in that:
Described step (a) is to gather user profile from the billing system/accounting system of operator and database, gathers subscribers feeder information from Digital Subscriber Line Access Multiplexer DSLAM or line test head.
4. the method for claim 1 is characterized in that: described step (c) if the actual disposition effect does not reach requirement, can be returned step (b) after finishing user's configuration, regenerates user's configuration parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101409798A CN101166045A (en) | 2006-10-19 | 2006-10-19 | Uplink power down regulation method combining reference length and user power spectral density |
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| CNA2006101409798A CN101166045A (en) | 2006-10-19 | 2006-10-19 | Uplink power down regulation method combining reference length and user power spectral density |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048896A1 (en) * | 2008-10-31 | 2010-05-06 | 华为技术有限公司 | Upstream power back-off method in digital subscriber line and the device and the system thereof |
| CN102118182B (en) * | 2009-12-31 | 2014-01-08 | 华为技术有限公司 | Broadband power control method, broadband power control system and local terminal equipment |
-
2006
- 2006-10-19 CN CNA2006101409798A patent/CN101166045A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048896A1 (en) * | 2008-10-31 | 2010-05-06 | 华为技术有限公司 | Upstream power back-off method in digital subscriber line and the device and the system thereof |
| 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 |
| CN101729094B (en) * | 2008-10-31 | 2013-04-17 | 华为技术有限公司 | Uplink power decreasing method, device and system in digital subscriber lines |
| CN102118182B (en) * | 2009-12-31 | 2014-01-08 | 华为技术有限公司 | Broadband power control method, broadband power control system and local terminal equipment |
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