Date Added: Jun 2012
Wireless Sensor Networks (WSNs) are deployed with large number of small sensor devices which are highly distributed. The sensor nodes are able to organize flexibly into a multi-hop ad-hoc network. The major task of sensor nodes is to sense physical data and transmit the gathered information to one or more base stations. Reliable delivery of data is very important and has to be considered while designing the protocols for WSNs. In this paper, the authors have analyzed a reliable transport protocol for wireless sensor networks called PSFQ (Pump-Slowly, Fetch-Quickly). They have discussed some shortcomings of PSFQ and then they have proposed an enhance PSFQ. The enhanced PSFQ has been simulated on TOSSIM and the results are gathered.