Is ARQ(Automatic Repeat Request) possible in NS3

[myeoi zieo]

Hi, all

I have a one wondering.

I want to execute ARQ or Selective ARQ in ns3.

There are possible in NS3?? 

Or Is there an example of using ARQ(or Selective ARQ) in NS3?

[Tom Henderson]

I'm not aware of an independent (textbook-like) ARQ example, but several
protocols implemented in ns-3 include ARQ mechanisms, including the TCP
retransmission mechanism, the link layer retransmissions in WiFi, and
hybrid ARQ in the LTE models.

- Tom

[myeoi zieo]

Thank you for reply, Tom

Can you tell me the name of the file using ARQ?

If I can edit the file, can I use ARQ in CSMA as well as LTE?

2021년 4월 3일 토요일 오전 1시 30분 52초 UTC+9에 Tom Henderson님이 작성:

[Tom Henderson]

On 4/4/21 10:27 PM, myeoi zieo wrote:
> Thank you for reply, Tom
> Can you tell me the name of the file using ARQ?

The ARQ implementations are spread across multiple files. For instance,
TCP's selective acknowledgements are implemented across several files
(tcp-socket-base.{cc,h}, tcp-option-sack.{cc,h}, tcp-tx-buffer.{cc,h},
tcp-rx-buffer.{cc,h})

LTE's HARQ is spread across more files than the above.

> If I can edit the file, can I use ARQ in CSMA as well as LTE?

The ARQ that is used in LTE won't very easily translate to CSMA, in my
opinion.

If you are looking for a simple ARQ model for basic link types, I am not
sure whether a model in ns-3 is readily available (perhaps others on the
list can recommend one?)

- Tom

[myeoi zieo]

Thanks for letting me know, Tom

I plan to use MyApp and TcpSocketFactory.

So if I use tcp application, can I use ARQ, retransmission?

2021년 4월 6일 화요일 오전 1시 7분 49초 UTC+9에 Tom Henderson님이 작성: