Re: [Roll] Determining DADR Contributions

Dear Sung,

These connectivity graphs look convincing; however, I guess that one of 
your underlying assumptions is that you run the .15.4 network whilst the 
.11 network is switched off. In reality, you will have loads of already 
deployed .11 networks heavily interfering with your .15.4 network which 
immediately impacts connectivity.

Mischa.

Sung Lee wrote:
> Dear ROLL WG members,
> 
> This is a follow up to what we said we would post to the mailing list.
> Although this is the summary of simulation of 802.11b and 802.15.4 
> comparison, we are currently working on the real test. We hope that we 
> can provide this result before the ROLL interim meeting.
> 
> We would appreciate any comments.
> Best regards,
> Sung
> 
> 
>> ------------------------------
>>
>> Message: 2
>> Date: Thu, 30 Jul 2009 17:21:21 -0400
>> From: "Ryusuke Masuoka" <ryusuke.masuoka@us.fujitsu.com>
>> Subject: [Roll] Determining DADR Contributions
>> To: "'ROLL WG'" <roll@ietf.org>
>> Message-ID: <014601ca115b$b0629fb0$1127df10$@masuoka@us.fujitsu.com>
>> Content-Type: text/plain;    charset="us-ascii"
>>
>> Hi, ROLL WG members,
>>
>> In order to move ahead and for us to determine what we/DADR can
>> contribute, we (Fujitsu) would like to do the following.
>>
>> At the ROLL meeting, we realized that many people are interested in
>> 802.15.4 radio. Our current implementation is on 802.11b radio (1
>> Mbps) and two wireless characteristics are different. We thought that
>> many ROLL members could not determine how good DADR would be when it
>> is applied to 802.15.4 radio. In that regard:
>>
>> (1) We will provide PER (packet error rate) and other wireless
>>   characteristics for both 802.11b (which we already have) and 802.15.4
>>   radios in a couple of weeks.
>>
>> (2) We will share our DADR 802.15.4 radio implementation experiment
>>   results by the end of August or in early September.
>>
>>   It would be a rather small (50 nodes or so) and preliminary with
>>   experiment assumptions, (average) hops, data reachability, etc.  (We
>>   plan to do a larger experiments (in the order of hundreds of nodes),
>>   but it will be somewhat later.)
>>
>>   As this is done as a part of system test for customer deployment, we
>>   are not sure we can accommodate them all, but please let us know
>>   what kinds of things/conditions/assumptions we should
>>   incorporate/consider/make in this experiment. We would appreciate
>>   your input very much.
>>
>> We also plan to see which LLN requirements DADR meets or not, according
>> to:
>>
>>   Overview of Existing Routing Protocols for Low Power and Lossy Networks
>>   draft-ietf-roll-protocols-survey-07
>>
>> so that we can better determine which parts of DADR are useful or not.
>>
>> We will try to be as fair as possible. However, if someone can
>> volunteer to do this, that would be great as we can get a third-party
>> evaluation, we would appreciate it very much and we will support the
>> person/group with the information necessary. (... but I am afraid that
>> everyone other than us is too busy for this.)
>>
>> Regards,
>>
>> Ryu
>>
>>
>>
>>
>>   
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll