Transcript Advances in IETF and L3 Mobility Management

P2P Streaming for Mobile Nodes:
Scenarios and Related Issues
Guang Lu
Juan Carlos Zúñiga
Akbar Rahman
IETF 77, March 2010
http://www.ietf.org/id/draft-lu-ppsp-mobile-00.txt
Summary
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The draft discusses mobility issues on P2P
streaming which are not well addressed in
the existing literature
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Link layer mobility
IP mobility (simple IP, Mobile IP and Proxy Mobile IP)
RELOAD support of mobility
Tracker mobility
Geo-Targeting
Mobile Node Capabilities
Some Examples of Mobility Considerations
for P2P (1/3)
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Mobile IP mobility
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Mobile IP provides IP mobility and hides the mobile's (peer
1) movement from the Correspondent Node (peer 2)
Because of Mobile IP, neither the tracker nor peer 2 are
aware of the change of network for peer 1
This may cause quality problems for the P2P Streaming
session. For example, peer 1 may experience high latency
and increased load, which adversely affects the user
experience of the P2P streaming session(s) and may result
in unacceptable performance
Some Examples of Mobility Considerations
for P2P (2/3)
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RELOAD support of mobility
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It has already been identified in the WG that any PPSP
developed protocol should be analyzed for interactions with
the RELOAD protocol
HIP is being considered for support of mobility for RELOAD
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HIP is an experimental with good security properties
In addition to HIP, the following mobility protocols should
also be considered for PPSP-RELOAD interactions:
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Mobile IP
Proxy Mobile IP
Some Examples of Mobility Considerations
for P2P (3/3)
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Geo-Targeting
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Geo-targeting is a technique used to determine the physical
location (i.e. geo-location) of a user
Current content distribution policies can apply certain rules
to fixed P2P Streaming clients
However, IP mobility can hide a peer moving from one
region to another where possibly different content
distribution rules may apply hence rendering the policies unenforceable
Conclusions & Next Steps
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The scenarios where a P2P streaming network
contains mobile nodes need special consideration
Does the WG want to
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Add mobility requirements in the “requirements”
document
Further analyze the impact of mobility on P2P
streaming
Propose solutions on mobility in the design of P2P
streaming protocols