Enhanced Algorithm of TCP Performance on Handover in Wireless Internet Networks
نویسندگان
چکیده
In the TCP over Wireless Internet Networks (WINs), TCP responds to losses such as high bit errors and handovers by invoking congestion control and avoidance algorithms. In this paper we propose new handover notification algorithm that is to send an explicit handover notification message to the source host from mobile host when occurring to handover. Upon receipt of explicit handover notification, the source host enters persist mode. This way, data transmissions at the source host during handover are frozen. In numerical result, proposed algorithm provides a little performance improvement compared with general TCP, and expects to greater performance improvements while having frequent handover in WINs.
منابع مشابه
TCP Throughput Optimized Handover Decisions
We consider a mobile user in an environment characterized by a cellular network with whole coverage and isolated Wireless-LAN (WLAN) access points. Downloading a file from the Internet, the user is often confronted with the need to come to a decision whether to handover from the cellular system to a WLAN access point. For offthe-shelf Mobile-IP configurations we show that the overall performanc...
متن کاملEnhanced TCP Congestion Control for Vertical Handover with the RTT inflation and the measured-RTT of the new network
The recent trend is that the mobile internet service has been offered in the integration of various wireless networks. In such heterogeneous networks, vertical handover is more common and important handover technologies. But during vertical handover, standard TCP has experienced many problems such as multiple packet losses, the packet reordering, the under-utilization due to the drastic change ...
متن کاملAn Efficient TCP with Explicit Handover Notification in Wireless Networks
TCP is a popular internet protocol for reliable end-to-end data delivery, but it cannot be applied to wireless networks in which packet loss may be induced by higher BER or handover than congestion. It assumes that such packet loss is caused by network congestion and initiates congestion control procedures. In this paper, we present a novel protocol using Explicit Handover Notification to impro...
متن کاملEvaluating Multipath TCP Resilience against Link Failures
Standard TCP is the de facto reliable transfer protocol for the Internet. It is designed to establish a reliable connection using only a single network interface. However, standard TCP with single interfacing performs poorly due to intermittent node connectivity. This requires the re-establishment of connections as the IP addresses change. Multi-path TCP (MPTCP) has emerged to utilize multiple ...
متن کاملWi-TCP: A TCP in Wireless Environment
Due to the strong drive towards wireless Internet access through mobile terminals, it has become necessary to carefully handle the issues in the wireless environment such as frequent handover/handoff (user mobility), temporary disconnection, burst error and fading. These characteristics of wireless environment deteriorate the performance of wireless systems sharply in terms of TCP throughput as...
متن کامل