[SensorNetArch] Global Congestion Definition

[Cheng Tien Ee]

Hi,

Eric did point me to Barbara's FPS scheme, and I have a copy of her NSDI 
submission which I've looked at. I think the good points about the paper 
are that it considers flows at the network layer rather than just 
packets at the data-link layer, as well as fairness. But I believe that 
the duration of a cycle should not be a fixed network-wide parameter 
(it'll cause underutilization when traffic is low), it should be 
adaptive. I'm also not sure how FPS will perform if S-MAC is used, or 
maybe TRAMA.

Ee

David Culler wrote:

> I think you did a very nice job of seeding the discussion.  It would 
> make sense to look at Barbara Holte's Flexible Power Scheduling too.
>
> Cheng Tien Ee wrote:
>
>> Hi,
>>
>> I learnt a lot from today's meeting. There's this point I think I got 
>> wrong: the definition of global congestion. I would say that global 
>> congestion occurs when source motes generate packets over a period of 
>> time long enough for the congested mote to send feedback and 
>> rate-limit the sources. If the source motes don't generate traffic 
>> long enough for the feedback to reach them, then I would consider 
>> that to be local congestion. That's what I usually think when I hear 
>> the term.
>>
>> Sorry about the confusion.
>> Ee
>> _______________________________________________
>> SensorNetArch mailing list
>> SensorNetArch at Millennium.Berkeley.EDU
>> http://Mail.Millennium.Berkeley.EDU/mailman/listinfo/sensornetarch
>
>