Subject: [pcp] PCP for mobile phones

From: Stuart Cheshire <[email-masked]>
Date: Sat, 09 Feb 2013 18:44:16 -0800

I have submitted two Internet Drafts which propose the mechanisms necessary for Personal Hotspot software on a mobile telephone to use PCP.

PCP Anycast proposes how a mobile telephone can communicate with the upstream NAT gateway over 3GPP:

<http://www.ietf.org/id/draft-cheshire-pcp-anycast-00.txt>

Of course some way of using PCP over 3GPP is necessary even in the simple case of a PCP client on the mobile telephone wanting to make basic PCP requests of its own.

If the mobile telephone also runs Personal Hotspot software making Wi-Fi Internet Access available to other local clients, then there will be typically two NATs involved: the Personal Hotspot NAT, and the mobile telephone carrier's NAT. In this case we need a way for the two NATs to cooperate to provide connectivity to the client devices. Recursive PCP proposes how this can be done:

<http://www.ietf.org/id/draft-cheshire-recursive-pcp-00.txt>

Stuart Cheshire