Abstract: Ad hoc Networks are complex distributed systems that consist of wireless mobile or static nodes that can freely and dynamically self-organize Namicheishvili et al, 2011. In this way they form arbitrary, and temporary “Ad hoc” networks topologies, allowing devices to seamlessly interconnect in areas with no pre-existing infrastructure. Introduction of new protocols such as Bluetooth, IEEE 802.11and Hyperlink are making possible the deployment of ad hoc networks for commercial purposes. TCP (Transmission Control Protocol) was designed to provide reliable end-to end delivery of data over unreliable networks. In theory, TCP should be independent of the technology of the underlying infrastructure. In particular, TCP should not care whether the Internet Protocol (IP) is running over wired or wireless connections. In practice, it does matter because most TCP deployments have been carefully designed based on assumptions that are specific to wired networks. Ignoring the properties of wireless transmission can lead to TCP implementations with poor performance. In practice, most TCP deployments have been carefully designed in the context of wired networks. In order to adapt TCP to the ad hoc environment, improvements have been proposed in the literature to help TCP to differentiate between the different types of losses. Indeed, in mobile or static ad hoc networks losses are not always due to network congestion, as it is mostly the case in wired networks. In this paper, we present model: how TCP can be affected by mobility and lower layers protocols.

Keywords: Ad Hoc Networks, protocols, Routing protocols, packet, source node, Relay routing, finite memory, TCP, Simulation Metrics, layers protocols TCP Feedback, TCP-DOOR.

Link:

SIMPLE MODEL FOR TRANSMISSION CONTROL PROTOCOL (TCP)

Irma Aslanishvili, Tariel Khvedelidze

http://www.foibg.com/ijima/vol04/ijima04-01-p07.pdf