RE: [P2PSIP] comments on using DHTs in wireless ad hoc networks

Hi Victor

>Are other solutions or DHT adaptations (e.g. CHR) considered depending on application scenario requirements?

Yes, you are right DHTs may not be optimal for small ad-hoc overlay networks. Depending on the scenario it may be easier and more efficient (overhead) to implement an unstructured overlays.

The P2PP allows for unstructured overlays as well.

Marcin

>-----Original Message-----
>From: ext Victor Pascual Ávila [mailto:victor.pascual.avila@gmail.com] 
>Sent: 20 November, 2007 20:11
>To: p2psip@ietf.org
>Subject: [P2PSIP] comments on using DHTs in wireless ad hoc networks
>
>Hi all,
>In "draft-bryan-p2psip-app-scenarios-00.txt", section 4.2 and 4.2.1.
>identifies  "Ad-Hoc and Ephemeral Groups" application 
>scenarios, and can be read:
>
>"Examples of such environment are isolated wireless ad-hoc 
>networks with no connection to the Internet or ad-hoc networks 
>with limited connectivity to the Internet in situations like 
>outdoor public events, emergencies, and battlefields."
>
>In "draft-ietf-p2psip-concepts-01", section 5.1 describes "The 
>Distributed Database Function", and can be read:
>
>"A class of algorithms known as Distributed Hash Tables 
><http://en.wikipedia.org/wiki/P2P_overlay> are one way to 
>implement the Distributed Database.  In particular, both the 
>Chord and Bamboo algorithms have been suggested as good 
>choices for the distributed database algorithm.  However, no 
>decision has been taken so far."
>
>Problem of implementing a distributed hash table in wireless 
>ad hoc networks is well-known. Scarceness of resources and 
>node mobility turn routing into a problem.
>
>Is there a consensus on using the same type of "Distributed 
>Database Function" (e.g. DHT) in all application scenarios? 
>Are other solutions or DHT adaptations (e.g. CHR) considered 
>depending on application scenario requirements?
>
>Thanks and sorry if this was already discussed,
>--
>Victor Pascual Ávila
>

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