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of wireless mobile computing. IP-based transport protocols thus sufferfrom poor performance when a mobile host com- municates with a host on the fixed network This is caused by frequent disruptions in network layer connectivity due to. - i) mobility and ii) unreliable nature of the wireless link. We describe I-TCP, which is an
Indirect TCP I. ? Indirect TCP or I-TCP segments the connection o no changes to the TCP protocol for hosts connected to the wired Internet, millions of computers use (variants of) this protocol o optimized TCP protocol for mobile hosts o splitting of the TCP connection at, e.g., the foreign agent into 2 TCP connections, no real
Wireless link is error-prone. § Mobile node moves around. § Packet loss may be due to transmission error, mobility, not only due to congestion. § TCP cannot distinguish packet loss due to congestion or transmission error. § For TCP over wireless networks, unnecessarily triggers slow start procedure will cause throughput
MOBILE. IP AND TCP. Mobile Computing. Summer 2004. Distributed. Computing. Group. Distributed Computing Group MOBILE COMPUTING R. Wattenhofer. 6/2 .. mobile host snooping of ACKs. Distributed Computing Group MOBILE COMPUTING R. Wattenhofer. 6/50. Snooping TCP. • Data transfer to the mobile host.
Wireless &Mobile Communications Chapter 7: Mobile Transport Layer. Motivation; TCP-mechanisms; Indirect TCP; Snooping TCP; Mobile TCP. Fast retransmit/recovery; Transmission freezing; Selective retransmission; Transaction oriented TCP. Winter 2001. 7.2. Motivation I. Transport protocols typically designed for.
not address the distinctive features of wireless mobile computing. IP-based transport protocols thus suffer from poor performance when a mobile host communicates with a host on the fixed network. This is caused by frequent disruptions in network layer connectivity due to — i) mobility and ii) unreliable nature of the wireless
30 Oct 2012 Mobile Transport Layer. •. Motivation. •. TCP mechanisms. •. Classical approaches. – Indirect TCP. – Snooping TCP. – Mobile TCP. – PEPs in general. •. Additional optimizations. - Fast retransmit/recovery. - Transmission freezing. - Selective retransmission. - Transaction oriented TCP. •. TCP for 2.5G/3G
Chapter 9: Mobile Transport Layer. ? Motivation. ? TCP-mechanisms. ? Classical approaches. ? Indirect TCP. ? Snooping TCP. ? Mobile TCP. ? PEPs in general. ? Additional optimizations. ? Fast retransmit/recovery. ? Transmission freezing. ? Selective retransmission. ? Transaction oriented TCP. ? TCP for 2.5G/3G
of wireless mobile computing. IP-based transport protocols thus su?er from poor performance when a mobile host com- municates with a host on the fixed network. This is caused by frequent disruptions in network layer connectivity due to. - i) mobility and ii) unreliable nature of the wireless link. We describe I-TCP, which is
22 Apr 2015 2) TCP within the fixed network cannot be changed. Working: Indirect TCP or I-TCP segments the connection (figure 1). no changes to the TCP protocol for hosts connected to the wired Internet, millions of computers use (variants of) this protocol; optimized TCP protocol for mobile hosts; splitting of the TCP
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