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A signal transmission and detection method, transceiver, and control entity

A technology for controlling entities and signal transmission, applied in the field of communication, which can solve the problems of false activation, inability to guarantee the accuracy of message transmission, robustness, strong signal correlation, etc.

Active Publication Date: 2017-08-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing DSL technology, all users use the same system default PRBS (Pseudo-RandomBinary Sequence, pseudo-random binary sequence) register initial state and a predetermined PRBS generator polynomial to generate PRBS bit pairs to modulate the transmission symbols of corresponding bits (for example: Modulate the synchronization symbol of 1 / 0 bit, and its corresponding pilot bit is +1 / -1; as another example, modulate the data symbol of IDLE message (idle message, specifically 7E bytes, and the corresponding binary bit is 01111111) for constellation point Rotation, as well as generating modulation bits for some training symbols during initialization, makes the correlation between signals of different users very strong, and cannot guarantee the accuracy of synchronous symbol detection and the robustness of message transmission using correlation techniques when there is strong crosstalk
Moreover, when the crosstalk is strong, it is easy to cause false activation

Method used

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  • A signal transmission and detection method, transceiver, and control entity
  • A signal transmission and detection method, transceiver, and control entity
  • A signal transmission and detection method, transceiver, and control entity

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specific Embodiment approach 1

[0088] In the first embodiment, all network-side transceivers and corresponding user-side transceivers use the same PRBS generator polynomial, and design the corresponding initial state of the PRBS register for each network-side transceiver and its corresponding user-side transceivers . Wherein, an initial state of the PRBS register different from that of other network-side transceivers may be designed for all or part (a part with stronger crosstalk) of the network-side transceiver. Wherein, the initial states of the PRBS registers of the network-side transceiver and the corresponding user-side transceiver may be the same or different, and may be specifically set according to actual conditions.

[0089] It should be noted that, in the following specific embodiments of the present invention, unless otherwise stated, the initial state of the PRBS register designed for each network-side transceiver and other network-side transceivers is taken as an example for illustration . Th...

specific Embodiment approach 2

[0157] All network-side transceivers and corresponding user-side transceivers use the same PRBS generator polynomial, and an initial state of a corresponding PRBS register is designed for each network-side transceiver and its corresponding user-side transceiver. Specifically, the control entity uses the port number of the FTU-O to generate the initial state of the PRBS register corresponding to the FTU-O; uses the port number of the FTU-R to generate the initial state of the PRBS register corresponding to the FTU-R. Of course, in practical applications, the port numbers of the FTU-O and the corresponding FTU-R are consistent.

[0158] refer to Figure 5 , is a flow chart of the signal sending and detecting method described in Embodiment 2 of the present invention. Such as Figure 5 As shown, the method may include the following steps:

[0159] Step S301: the user powers on and enters the Handshake stage, where the FTU-O and the FTU-R interact to generate a PRBS.

[0160] I...

specific Embodiment approach 3

[0176] refer to Image 6 , is a flow chart of the method for signal transmission and detection described in Embodiment 3 of the present invention. Such as Image 6 As shown, the method may include the following steps:

[0177] Step S401: the user powers on and enters the Handshake stage, where the FTU-O and the FTU-R interact to generate a PRBS.

[0178] In the third embodiment of the present invention, the generation mode of the PRBS is still: all users adopt the same PRBS generator polynomial, and utilize the port number information of the FTU-O corresponding to each user to generate the FTU-O and FTU-O of each user. R respectively corresponds to the initial state of the PRBS register.

[0179] Step S402: The FTU-O generates the initial state of the PRBS register of the port and the FTU-R corresponding to the port according to the port number information of the port.

[0180] Step S403: The FTU-O notifies the FTU-R corresponding to the port of the initial state of the PR...

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Abstract

Disclosed is a signal sending method. The method comprises: a network side transceiver receiving a generation parameter of a pseudo random binary sequence (PRBS) allocated by a control entity to this port, and notifying a user side transceiver by using a message; the network side transceiver generating a PRBS bit of this port by using the PRBS generation parameter of this port; and the network side transceiver performing constellation point rotation by using the PRBS bit of this port, generating a sending signal, and sending the sending signal to a user side. Embodiments of the present invention also provide a single detection method, a method for allocating a generation parameter of a PRBS, a network side transceiver and a user side transceiver, and a control entity. By using the embodiments of the present invention, irrelevancy of signals of users can be effectively improved, and a location of a sent symbol is detected by using a related technology, so as to improve the accuracy of the detection of the sent symbol and avoid the phenomenon of a pseudo activation due to an error in a synchronization symbol detection.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a signal sending and detection method, a transceiver and a control entity. Background technique [0002] After more than 20 years of development, DSL (Digital Subscriber Line, Digital Subscriber Line) technology has become the mainstream access technology in the telecommunications field. DSL technology is a high-speed transmission technology for data transmission through telephone lines, that is, UTP (Unshielded Twist Pair, unshielded twisted pair), including ADSL (Asymmetrical Digital Subscriber Line, Asymmetrical Digital Subscriber Line), VDSL (Very-high- bit-rate Digital Subscriber Line, very high-speed digital subscriber line), VDSL2 (Very-high-bit-rate Digital Subscriber Line2, very high-speed digital subscriber line 2) and SHDSL (Single-pair High-bit-rate Digital Subscriber Line, single-pair High Speed ​​Digital Subscriber Line), etc. [0003] In the DSL series tec...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/20H04L27/3444H04L27/3455
Inventor 何孝月刘建华王祥石操周斌阿米尔·法兹罗拉西
Owner HUAWEI TECH CO LTD
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