M-TCP: TCP for mobile cellular networks
ACM SIGCOMM Computer Communication Review
Improving the performance of reliable transport protocols in mobile computing environments
IEEE Journal on Selected Areas in Communications
Mobile IPv6 network: implementation and application
International Journal of Network Management
| Hi-index | 0.00 |
Mobile IP is proposed to support host mobility in theInternet. However, during a handoff the Mobile IP suffersfrom packet sequence disruption as well as packet loss. Thehandoff also severely affects the conventional TCP, whichwas designed without considering mobility. Several versionsof mobile TCPs are introduced focusing on freezingthe transfer during the handoff. Also, although existing fasthandoff proposals can reduce handoff latency and packetloss, there remains packet sequence disruption (i.e., out-of-order delivery). In this paper, we describe a new TCP,Delayed-duplicated ACK (DDA) TCP, to overcome the out-of-order delivery problem in the Mobile IP networks. TheTCP-DDA estimates the time duration, UTP (Unstable TimePeriod), while the packet can be out-of-order. It then suppresssending duplicated ACK during the UTP so that itdoes not enter the retransmission procedure. The proposedscheme maintains end-to-end TCP semantics and does notrequire any new entity between the sender and the receiver.Only a small change is required to estimate the UTP valueat the TCP receiver. Simulation result shows that the proposedscheme can yield better performance than the conventionalTCP.