search query: @keyword GPRS / total: 106
reference: 2 / 106
« previous | next »
Author:Chemmagate, Binoy
Title:An experimental study of web transport protocols in cellular networks
Publication type:Master's thesis
Publication year:2011
Pages:x + 60 s. + liitt. 6      Language:   eng
Department/School:Tietoliikenne- ja tietoverkkotekniikan laitos
Main subject:Tietoverkkotekniikka   (S-38)
Supervisor:Eggert, Lars
Instructor:Isomäki, Markus
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201207022766
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  683   | Archive
Keywords:HTTP
SPDY
mobile
browsers
GPRS
HSPA
LTE
TCP
initial congestion window
header compression
multiplexing
Abstract (eng): HTTP and TCP have been the backbone of web transport for decades.
There have been numerous enhancements and modifications to both of these protocols.
HTTP and TCP were developed for traditional packet networks existing since 1990's.
Today, however, wired network parameters such as bandwidth and delay have significantly improved all over the world.
However, cellular data networks (GPRS, HSPA) still experience bandwidth and delay issues, which affect the performance of these protocols.
HTTP and TCP protocols can be optimized for today's network conditions and end-user requirements, such as accelerated page loading, low latency and better network utilization.

Through the course of this work, we measure the improvements in using the SPDY protocol in comparison to HTTP.
We measure the impact of header compression, number of parallel TCP connection per domain, and multiplexing of streams.
From the TCP perspective, we analyze the impact of higher initial congestion windows.
Some of the interesting findings are discussed, comparing various initial congestion window values.
All of these experiments are conducted over live GPRS, HSPA and LTE networks.
We study the challenges of moving from HTTP to alternative protocols.
We also discuss the ways to improve the mobile web browsing by introducing and refining the existing schemes such as DNS pre-fetching, radio transition delays, smart use of IP versions, reduction of TLS negotiation delays, and intelligent allocation of TCP connections in HTTP.

Our studies reveal that low bandwidth networks such as GPRS benefits from header compression, whereas the HSPA and LTE networks benefit from multiplexing as it saves the time for establishing new TCP connections.
The advantage of higher TCP initial congestion window is seen only in networks with high band width and high latency.
ED:2012-05-23
INSSI record number: 44622
+ add basket
« previous | next »
INSSI