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Transmitter disabling device

A transmitter and optical transmitter technology, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve the problems of impossibility, damage to upstream data flow communication, etc., and achieve the effect of low tampering

Active Publication Date: 2011-05-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using TDMA to timeshare upstream communications over a PON, if an optical network terminating node does not respect its assigned transmission slots and sends continuous or asynchronous other than the allocated time slots assigned by the OLTN scheduling function), this would severely impair or make impossible upstream communications to other OLTNs in the PON

Method used

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  • Transmitter disabling device
  • Transmitter disabling device
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Examples

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Embodiment Construction

[0027] figure 1 An example of a passive optical network 1 for a fiber-to-X network architecture is shown. The passive optical network 1 comprises an optical line terminating node 2 connected to a plurality of optical network terminating nodes 3 , 4 , 5 , 6 . The output 7 from the optical line terminating node is split by an optical splitter 8 such that the optical line terminating node 2 is connected to each of the optical network terminals 3,4,5,6. Downstream communications are sent to all optical network terminating nodes, ie communications from optical line terminating node 2 to one of the optical network terminating nodes 3,4,5,6. Therefore, each optical network terminating node 3, 4, 5, 6 has to discard messages not intended for it. Upstream communication is typically accomplished using a multiple access scheme such as Time Division Multiple Access (TDMA). This allows each optical network terminating node to send messages in predetermined time slots. This avoids data ...

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Abstract

An optical transmitter disabling device for controlling an optical transmitter (14), particularly of an optical network termination node (3, 4, 5, 6) of a passive optical network (1 ) comprises a monitoring module (11 ) and a disabling module (12), the monitoring module (11 ) is adapted to determine at least when the optical transmitter (14) is active, the disabling module (12) is adapted to be connected to an activation input (16) of the optical transmitter (14) and wherein the disabling module (12) is adapted to interrupt an activation signal to the optical transmitter (14) at least when the monitoring module (11 ) determines that the optical transmitter (14) is active outside of a predetermined time interval.

Description

technical field [0001] The present invention relates to transmitter disabling devices and, in particular, to optical transmitter disabling devices integrated with optical network termination nodes. It also relates to an optical network terminating node incorporating a transmitter deactivation device, a passive optical network comprising such an optical network terminating node and a method of operation of the transmitter deactivation device. Background technique [0002] As consumers are demanding higher bandwidth communication channels, telecommunications companies are moving their fiber optic communication networks closer to end users. The extension of optical communication networks closer to subscribers, enabling optical networks to replace more traditional copper local loops, is known as Fiber to the X (FTTx). The fiber optic network can be extended to a communication cabinet (cabinet) serving the neighborhood. Alternatively, it can be extended to the side of the road ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/155H04B10/079H04B10/564
CPCH04B10/564H04B10/07955
Inventor S·达尔福特
Owner TELEFON AB LM ERICSSON (PUBL)