Data Transport in wireless network
Data Transport in Wireless Networks
Akinniyi Ojo, Alireza Ranjbar, Bastian Arjun Shajit, Behzad Savabi, Misikir Gebrehiwot, Robin Babujee Jerome,
Setareh Roshan, Swapnil Pande
Department of Communication Engineering,
Aalto University School of Electrical Engineering,
Espoo, Finland
Abstract— The popularity of wireless networks used to access the Internet is increasing immensely. With huge advancements in the field of wireless technology, the
Internet has slowly moved from a traditional wired network to a wireless network. Data transport layer or L4 of the OSI model plays a significant role in wireless networks. Research shows that wireless link characteristics vary significantly from wired network.
Hence traditional transport layer protocols cannot be used without modifications in wireless networks. One of the main reasons for the degraded performance of transport protocols, like TCP in wireless networks is the interpretation that packet loss is caused by congestion. On the contrary, in wireless networks, packet loss occurs mostly due to higher bit error rates, link failures, packet corruption, user mobility, handoffs etc. Various mechanisms have been proposed to improve transport layer performance in wireless links. This paper discusses about some of the popular enhancements of transport layer protocols to make them suitable for both wireless networks and heterogeneous networks like cellular networks. It also discusses the merits and demerits of each approach thereby trying to find out the characteristics of an ideal data transport layer protocol for the wireless network suited for the modern internet and its users.
Keywords—Congestive & Non Congestive Control in L4,
Proxy Basesd Approaches, Mobile Networks, Cellular
SCTP, Freeze TCP, Enhanced Snoop, Indirect TCP, TCP
Variants for MANETs, Network Coding for Wireless
Networks,.
I. INTRODUCTION
The transport layer provides end to end communication services for
Akinniyi Ojo, Alireza Ranjbar, Bastian Arjun Shajit, Behzad Savabi, Misikir Gebrehiwot, Robin Babujee Jerome,
Setareh Roshan, Swapnil Pande
Department of Communication Engineering,
Aalto University School of Electrical Engineering,
Espoo, Finland
Abstract— The popularity of wireless networks used to access the Internet is increasing immensely. With huge advancements in the field of wireless technology, the
Internet has slowly moved from a traditional wired network to a wireless network. Data transport layer or L4 of the OSI model plays a significant role in wireless networks. Research shows that wireless link characteristics vary significantly from wired network.
Hence traditional transport layer protocols cannot be used without modifications in wireless networks. One of the main reasons for the degraded performance of transport protocols, like TCP in wireless networks is the interpretation that packet loss is caused by congestion. On the contrary, in wireless networks, packet loss occurs mostly due to higher bit error rates, link failures, packet corruption, user mobility, handoffs etc. Various mechanisms have been proposed to improve transport layer performance in wireless links. This paper discusses about some of the popular enhancements of transport layer protocols to make them suitable for both wireless networks and heterogeneous networks like cellular networks. It also discusses the merits and demerits of each approach thereby trying to find out the characteristics of an ideal data transport layer protocol for the wireless network suited for the modern internet and its users.
Keywords—Congestive & Non Congestive Control in L4,
Proxy Basesd Approaches, Mobile Networks, Cellular
SCTP, Freeze TCP, Enhanced Snoop, Indirect TCP, TCP
Variants for MANETs, Network Coding for Wireless
Networks,.
I. INTRODUCTION
The transport layer provides end to end communication services for
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