Re: [CCAMP] [flexi-grid] Re: New version of "Framework and Requirements for GMPLS based control of Flexi-grid DWDM networks"

[[e-mail]]

Hi Ramon,

May I suggest we don't mention detailed filter information in the 
document? As the filter may hide much detail information.
OCh P filter defined in G.872 aggregates and disaggregates OCh P signals. 
It seems the filter component has the function to multiplex or demultiplex 
OCh-P into/from OMS.
With the development of tunable receiver and transmitter, the filter may 
be a logical component.
For example, the optical components in node A emit specific Frequency 
Slots (FS). They are coupled into the same fiber.
The splitter in node B just copy the optical signal which includes all 
frequency slots to different optical receivers.
Different optical receivers will be configured to work in different 
nominal central frequency. They will scan specific frequency slots.
In this case, logical filter component in node A may include transmitter 
and coupler. Another one in node B may include splitter and receivers.

Filter in different place of the network may have different function.
We may show the topology view just like the figure 7.

Xihua




Ramon Casellas <[e-mail]> 
2013-03-05 下午 09:00

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[flexi-grid] Re: New version of "Framework and Requirements for GMPLS 
based control of Flexi-grid DWDM networks"







Note: replying to ccamp@ as per wg chairs/AD indications. Apologies for 
having non text email

Xihua,

The model was more or less agreed during unofficial meeting during last 
IETF in Atlanta. Of course it is open to debate and can be extended or 
changed as we see fit.

The reason why it is there if I am not mistaken is two-fold:

- First, as a component that, bound to a fiber, defines the working region 
/ spectrum of the TE link, as discussed in the previous section.

- Second, as the filter component that can be configured to filter a 
frequency slot that is then the input of the matrix channel.

We can change it if the agreement is not correct (for example, if the 
filter component is part of the elements that constitute the matrix 
channel). What would you propose instead? I am not sure I understand your 
suggestion. Maybe it should be made clear that the box with a X is just a 
functional element able to switch a frequency slot from one input port to 
an output port. On the right hand side, there is also the MUX function.

Thanks

R.


El 05/03/2013 13:20, [e-mail] escribió:

Hi All, 

In section 7.1, following model is not quite correct. 
What is the filter? Is it coupler, optical amplifier, or optical splitter? 

I think there should be no any filter at both side of matrix channel.