A new Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Non-Renegable Selective Acknowledgements (NR-SACKs) for MPTCP
Author(s) : Z. Deng
Filename : draft-deng-mptcp-nrsack
Pages : 9
Date : Dec. 4, 2013
Multipath Transmission Control Protocol (MPTCP) [RFC6824] adopts
Selective Acknowledgements (SACKs) at the subflow level to allow an
MPTCP receiver to acknowledge the receipt of out-of-order data. In
MPTCP, SACK information is expected (but not mandated)--though SACKs
notify a data sender the reception of specific out-of-order data, the
out-of-order data cannot be delivered to application layer until it
has been cumulatively acknowledged at the connection-level. The MPTCP
data receiver is permitted to later abandon the out-of-order data
cached in the receive buffer. The out-of-order data is called
renegable. Since the delivery of a SACKed out-of-order data is
renegable, the sender has to maintain copies of SACKed data in the
send buffer until it is cumulatively acked. As a result, the send
buffer is inevitably wasted and the transmission rate is restricted
even though the network is not congested.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-deng-mptcp-nrsack-00.txt
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ftp://ftp.ietf.org/internet-drafts/
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Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-deng-mptcp-nrsack>
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