processing time for rohc

Asked by Imad J. Mohamad on 2010-07-01

I'm sorry if my question not relevant. I'm looking for information and found your forum is specialist.
Any link or reference i can read to find such information.

RoHC Implementation is marked in utilizing the bandwidth and improved the delay.I wand to understand and analyze the delay.

let end to end delay for VoIP = processing delay + propagation delay + queuing delay + transmission delay
Please In terms of processing delay and queuing delay. My i ask

1- How much RoHC adds processing delay or overhead (for VoIP for example) to the compressor node (router) and to decompress-or node (router) as a ratio for each served packet..

2- How much RoHC reduced the queuing delay (as a ratio) in the compressor node and to decompress-or node.

I'm sorry if my question is not relevant to fourm interest. I'm looking for information and found your forum is specialist.
Any link or reference i can read to find such information.

Thank you in advance
Imad

Question information

Language:
English Edit question
Status:
Answered
For:
rohc Edit question
Assignee:
No assignee Edit question
Last query:
2010-07-01
Last reply:
2010-07-01

Hi,

The delay is somehow related to the link layer technologies. Let me explain
: if you consider a satellite access, using ATM at layer 2, your VoIP
packets will be segmented into 2 ATM cells. These kinds of access control
the bandwidth using a radio ressource management protocol based on requests
emitted by the terminals and a Network control center that collects the
requests and calculate the MF-TDMA allocation plan used by the terminal to
emit their layer 2 packets. With this scheme, the 2 cells can be emitted
separetly (i.e. on different frames) leading to an increased delay. Now,
using ROHC you will be able to have only 1 cell to transport your VoIP
pakct, leading to a reduction of the delay at layer 2

Best regards

C├ędric

2010/7/1 Imad J. Mohamad <email address hidden>

> New question #116322 on rohc:
> https://answers.launchpad.net/rohc/+question/116322
>
> I'm sorry if my question not relevant. I'm looking for information and
> found your forum is specialist.
> Any link or reference i can read to find such information.
>
> RoHC Implementation is marked in utilizing the bandwidth and improved the
> delay.I wand to understand and analyze the delay.
>
> let end to end delay for VoIP = processing delay + propagation delay +
> queuing delay + transmission delay
> Please In terms of processing delay and queuing delay. My i ask
>
> 1- How much RoHC adds processing delay or overhead (for VoIP for example)
> to the compressor node (router) and to decompress-or node (router) as a
> ratio for each served packet..
>
> 2- How much RoHC reduced the queuing delay (as a ratio) in the compressor
> node and to decompress-or node.
>
> I'm sorry if my question is not relevant to fourm interest. I'm looking for
> information and found your forum is specialist.
> Any link or reference i can read to find such information.
>
> Thank you in advance
> Imad
>
>
> --
> You received this question notification because you are a member of ROHC
> Team, which is an answer contact for rohc.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~rohc
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~rohc
> More help : https://help.launchpad.net/ListHelp
>

Can you help with this problem?

Provide an answer of your own, or ask Imad J. Mohamad for more information if necessary.

To post a message you must log in.