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Tranceiver unit

A transceiver and transmitter technology, applied to the computer program of the master station, as the master station of the phase synchronization loop to operate in the field, it can solve the problems of increasing the complexity of network components and increasing the price of network components

Active Publication Date: 2012-05-30
TELLABS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requirement increases the complexity of the network element and increases the price of the network element many times

Method used

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Examples

Experimental program
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Embodiment Construction

[0061] figure 1 A schematic illustration of a phase synchronization loop is shown. The network element 120 is arranged to operate as the slave side of the phase synchronization loop and the network element 130 is arranged to operate as the master side of the phase synchronization loop. exist figure 1 In the exemplary case shown in , network element 120 includes plug-in line cards, such as line cards 121 and 122 . Each line card of network element 120 may include one or more plug-in transceiver units. Line card 122 includes transceiver units 123 and 124 , and line card 121 includes transceiver unit 101 . The network element 120 also includes a cross-connection unit 125 arranged to connect the line cards to each other. A cross-connect unit may be, for example, a switch unit or a cabling system that provides a full mesh connection between different line cards. The network element 120 also includes a central processing unit ("CPU") 126 and a controllable signal generator 106 ...

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Abstract

The invention relates to a tranceiver unit, especially discloes a tranceiver unit and an operation method used in a phase synchronized optical master loop and a tranceiver unit and an operation method used in a phase synchronized optical slave loop. The phase synchronized optical master-slave loop at the slave-end comprises a processor (105) configured to include a first timing signal into a bit stream to be transmitted to the master-end, detect a second timing signal from a bit stream received from the master-end, and calculate a phase difference between a regenerated phase signal and a reference phase signal on the basis of a transmission moment of the first timing signal, a first time-stamp indicating a reception moment of the first timing signal at the master-end, a reception moment of the second timing signal, and a second time-stamp indicating a transmission moment of the second timing signal from the master-end. The processor is configured to read the time stamps from the received bit stream that corresponds to a received light signal according to a reception line-code. Thus, conversion of data format is not necessary for the phase synchronization.

Description

technical field [0001] The invention relates to a transceiver unit for the slave side of a phase synchronization loop and to a transceiver unit for the master side of a phase synchronization loop. Furthermore, the invention relates to a method for operating as a slave side of a phase synchronization loop and to a method for operating as a master side of a phase synchronization loop. Furthermore, the invention relates to a computer program on the slave side of a phase synchronization loop and to a computer program on the master side of a phase synchronization loop. Background technique [0002] A data transfer network comprises network elements, such as routers, switches, and terminal devices that communicate with each other via data transfer links between the network elements. In many data transfer networks, clock time information needs to be distributed among network elements. The network elements may be arranged to form master-slave pairs such that each master-slave pair...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40
CPCH04J3/047H03L7/07H04J3/0635H04J14/00H04L7/00H04Q11/0067
Inventor 肯尼斯·哈恩
Owner TELLABS