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Multiplexed optical signal transmission apparatus

A signal transmission device and signal technology, which are applied in multiplex communication, wavelength division multiplexing system, time division multiplexing system, etc., can solve the problems of wrong operation by maintainers, increased workload of maintainers, and server impact.

Inactive Publication Date: 2008-09-17
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such operations increase the workload of the maintainer, and also cause incorrect operation, wrong setting, or wrong identification of the maintainer. Such human errors may have a significant impact on the server.

Method used

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  • Multiplexed optical signal transmission apparatus
  • Multiplexed optical signal transmission apparatus
  • Multiplexed optical signal transmission apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] image 3 The configuration of the conveying device 40 according to the first embodiment of the present invention is shown. The transmission device of the first embodiment includes: optical modules 31-1 to 31-N, which receive N low-speed signals 1 to N3000 with mutually different optical types or signal speeds or frame formats as optical signals from the WAN line, respectively After being converted into N electrical signals, it is sent to the multi-rate signal processing unit 32; and on the contrary, it receives N electrical signals from the multi-rate signal processing unit 32, converts them into N optical signals, and sends multi-low-speed signals 1 to N3000 to WAN line transmission; the multi-rate signal processing unit 32, for N signals with different signal speeds and frame formats, according to the operation mode setting instruction 3003 from the monitoring control unit 38, can independently respond in the multiplexing direction and the separating direction Properl...

no. 2 example

[0067] In the first embodiment, one category code uniquely determines the operation mode selection indication, optical module category information, signal category information and frequency band allocation setting instructions, and one category code corresponds to two or more signal categories In the case of optical modules, they cannot be uniquely identified with only the category code. An example of this case will be described as a second example of the present invention.

[0068] In this embodiment, it is the case that an XFP type optical module is applied, and the frame format and signal speed that can accommodate the signal are completely different, and the STM-64 (signal speed: 9953.28Mbit) stipulated by ITU-T G.707 is used. / s), 10GBASE-R (signal speed: 10312.5Mbit / s) and 10GBASE-W (signal speed: 9953.28Mbit / s) regulated by IEEE802.3 as an example of the transmission device of the multi-rate signal processing unit Be explained.

[0069] Figure 15 The configuration o...

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Abstract

A transmission apparatus for multiplexing optical signals has a multi-rate signal processing unit that has a plurality of signal processing circuits in advance according to various signal speeds and frame formats and selects a necessary signal processing circuit as necessary. In addition, the transmission apparatus acquires a type code, used to identify the type of the signal of a removable optical module, from the optical module and, from the acquired information, automatically determines the operation mode of the multi-rate signal processing unit, bandwidth allocations according to the signal speeds, and monitoring item contents for different frame formats to eliminate the need for maintenance engineer's work that is otherwise required when a low-speed signal is added.

Description

technical field [0001] The present invention relates to multiplexing a plurality of signals different in signal speed or frame format into one multiplexed signal of a predetermined signal speed, and conversely separating one multiplexed signal of a predetermined signal speed into signal speeds or frame formats A transmission device and a transmission method of a plurality of different signals. Background technique [0002] In recent years, broadband lines such as the Internet have spread in households, and the demand for lines centered on IP services has increased. Accordingly, SONET / SDH (Synchronous Digital Hierarchy) and ATM, etc., which have been the mainstream of WAN lines until now, have been replaced. , services based on high-speed and low-cost Gigabit Ethernet (registered trademark) and 10 Gigabit Ethernet (registered trademark) are rapidly gaining popularity in the market. With the increase in the demand for such lines, the optical fiber core wires used for transmis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/22H04J3/08H04J14/02
CPCH04J3/1611H04J3/047H04J2203/0046
Inventor 渥美俊之芝崎雅俊鹰取耕治田村幸久
Owner HITACHI LTD
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