Method, equipment and system for feeding back signal error in multi-carrier communication system

A technology of multi-carrier communication and signal error, applied in the field of communication systems, can solve the problems of feedback channel capacity limitation, occupation, and inability to feed back a large amount of data to the central office in time, and achieve the effect of improving channel capacity and line rate

Inactive Publication Date: 2010-03-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the scheme that can be used for feedback signal error is: feedback the current signal error on each subcarrier, so that the local end can adjust the transmission filter in real time, resulting in a large amount of data that needs to be fed back, because the feedback channel used for the feedback signal error and the uplink business The channel occupies the uplink bandwidth together, so the capacity of the feedback channel is limited, and a large amount of data cannot be fed back to the central office in time, so that the central office cannot adjust the transmission filter in real time

Method used

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  • Method, equipment and system for feeding back signal error in multi-carrier communication system
  • Method, equipment and system for feeding back signal error in multi-carrier communication system
  • Method, equipment and system for feeding back signal error in multi-carrier communication system

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Embodiment 1

[0044] In order to timely feed back the signal error to the central office within the limited feedback channel capacity, this embodiment provides a signal error feedback method, such as figure 2 As shown, the method includes the following steps:

[0045] 201. First, it is necessary to determine the specific subcarrier spacing; generally speaking, there are many ways to determine the specific subcarrier spacing, for example: the operator uniformly specifies through the MIB (Management Information Base, Management Information Base) interface before powering on; it can also be In the process of line initialization, it can be specified according to the specific situation; it can also be specified according to the specific situation during the normal operation of the line.

[0046] 202. When the specific sub-carrier spacing is determined, according to the specific sub-carrier spacing, the signal error is fed back to the central office at the corresponding frequency in the communic...

Embodiment 2

[0061] This embodiment provides a signal error feedback method in a multi-carrier communication system, such as Figure 6 As shown, the feedback method includes the following steps:

[0062] 601. The central office presets a specific subcarrier spacing, where the specific subcarrier spacing is greater than the spacing between adjacent subcarriers in a multi-carrier communication system. The specific subcarrier spacing can be the number of spaced subcarriers, for example, setting the specific subcarrier spacing as M, which means M subcarrier widths (M is an integer greater than 1); the specific subcarrier spacing can also be spaced subcarriers The frequency width value of , such as setting the specific subcarrier spacing as M×Δf, Δf represents the frequency width value of adjacent subcarriers in the multi-carrier communication system. The setting method in this embodiment is as follows: the operator specifies through the MIB (Management Information Base, Management Information...

Embodiment 3

[0079] This embodiment provides a signal error feedback method, such as Figure 10 As shown, the feedback method includes the following steps:

[0080] 1001. The client presets a specific subcarrier spacing, where the specific subcarrier spacing is greater than the spacing between adjacent subcarriers in a multi-carrier communication system. For example, setting the specific subcarrier spacing to be M means M subcarrier widths (M is an integer greater than 1), and of course the specific subcarrier spacing can also be set to a value of M subcarrier widths, such as M×Δf, where Δf means multiple Frequency width value of adjacent subcarriers in carrier communication system. The setting method among the present embodiment is: before being powered on by the operator through the MIB (Management Information Base, management information base) interface unified designation; Or in the process of line initialization, designate according to specific circumstances; Or in the process of nor...

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Abstract

The invention discloses a method, equipment and a system for feeding back a signal error in a multi-carrier communication system, which relate to the field of communication systems, and solve the problem that the signal error cannot be promptly fed back under the condition of limited bandwidth of a feedback channel in the prior art. The embodiment of the invention determines a specific subcarrierspacing first, and feeds back the signal error according to the specific subcarrier spacing at a client, thus the signal error does not need to be fed back in each subcarrier, the feedback data amountis reduced, and the feedback channel cannot be blocked, thereby realizing the aim of promptly feeding back the signal error. The embodiment of the invention is used in the multi-carrier communicationsystem which comprises an xDSL communication system and various wireless communication systems, such as a mobile communication system.

Description

technical field [0001] The invention relates to the technical field of communication systems, in particular to a signal error feedback method, device and system in a multi-carrier communication system. Background technique [0002] xDSL is a high-speed data transmission technology transmitted on telephone twisted pair (unshielded twisted pair, Unshielded Twist Pair, UTP). As the frequency band used by xDSL technology increases, crosstalk (Crosstalk), especially in high frequency bands, appears become increasingly prominent. When multiple users in a bundle of cables request xDSL services, the rate of some lines will be low, the performance will be unstable, or even fail to be opened due to far-end crosstalk (FEXT), which will eventually lead to a relatively low outgoing line rate of the DSLAM. Such as figure 1 As shown, the scenario of far-end crosstalk is: the signal sent by the central office equipment that provides data transmission for one of the users will cause signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/00H04L1/06
CPCH04L5/0007H04L1/0029H04L1/0027H04L1/0026H04L5/0053
Inventor 方李明拉斐尔·幸德瑞那黄庆
Owner HUAWEI TECH CO LTD
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