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BitHoc: Bittorent for Wireless Ad Hoc networks. Why was/is Bittorent hard over wireless networks?. Scarcity of the resources due to their shared nature. TCP performance drops L imited energy, bandwidth and computation power. Mobility Complexity. Design Space.

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Presentation Transcript
why was is bittorent hard over wireless networks
Why was/is Bittorent hard over wireless networks?
  • Scarcity of the resources due to their shared nature.
  • TCP performance drops
  • Limited energy, bandwidth and computation power.
  • Mobility
  • Complexity

Nitin--8

design space
Design Space

Nitin--9

what solution is author proposing
What solution is author Proposing?

BitHoc

  • Bittorent is topology unaware so limit the scope of neighborhood.
  • In unstructured architectures nodes have to be aware about the scope of the neighborhood.

Nitin--12

slide8
Cont..

BitHoc

  • Balance between content download time and fair sharing.
  • Modify chocking algorithm
  • TTL of the message can help in deciding the scope of the neighborhood.

Nitin--14

results
Results

Piece size is an important factor(Balance!!)

Nitin--16

slide11
Cont…

Nitin--17

slide12
Cont…

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slide13
Cont…

Nitin--19

problems with solutions
Problems with solutions!!
  • Reducing the neighborhood comes at the expense of a lower sharing ratio.
  • New chocking algorithms involves TCP connections with distant peers leading to performance degradation.
  • NEARBY NEIGHBORS TABLE (NNT) and FAR NEIGHBORS TABLE (FNT)– Extra overhead.

Nitin--20

what will be borrow
What will be borrow?
  • Broadcasting is not a good idea.
  • Small size of pieces.
  • Central tracker can be effective solution.
  • Can use DHT like approaches to reduce the complexity.

Nitin--21

questions
Questions?

Nitin--22