To meet an increasing demand for multimedia services and electronic connectivity across the world, satellite networks will play an indispensable role in the deployment of global networks. A number of satellite communication systems have been proposed using geosynchronous (GEO) satellites, medium earth orbit (MEO) and low earth orbit (LEO) constellations operating in the Ka-band and above. At these frequencies satellite networks are able to provide broadband services requiring wider bandwidth than the current services at C or Ku-band. Most of the next generation broadband satellite systems will use ATM or ATM like switching with onboard processing to provide full two-way services to and from earth stations. The new services gaining momentum include mobile services, private intranets and high data rate internet access carried over integrated satellite-fiber networks. Several performance issues need to be addressed before a transport layer protocol, like TCP can satisfactorily work over satellite ATM for large delay-bandwidth networks. In this paper, we review the proposed satellite systems and discuss challenges such as, traffic management and QoS requirements for broadband satellite ATM networks. The performance results of TCP enhancements for Unspecified Bit Rate over ATM (ATM-UBR+) for large bandwidth-delay environments with various end system policies and drop policies for several buffer sizes are presented.
Did you find this white paper useful?
26 out of 50 users found this white paper useful
Related white papers
SLA-Based Coordinated Superscheduling Scheme and Performance for Computational Grids
The Service Level Agreement (SLA) based grid superscheduling approach promotes coordinated resource sharing. Superscheduling is facilitated between administratively and topologically distributed grid sites by grid schedulers such as Resource brokers....
SQL Server 2008: What to Expect
Microsoft SQL Server 2008 has many great new features that will allow you to develop higher performing, more scalable next-generation applications using more than just relational data. Although this release...
New TechNet Webcast: Windows Server 2008 and Windows Vista Better Together Technologies (Level 200)
The presenter of this webcast discusses many new features shared by the Windows Vista and Windows Server 2008 operating systems. The webcast start by talking about why Windows Server 2008...
How Cisco IT Uses QoS for Critical Applications
From a business value perspective, the network needed to support the user demand for greater productivity. Videoconferencing and collaboration applications running across the LAN and WAN needed to respond to...
Intel Podcast: IT Metrics with JJ Johnson
Podcast - IT Metrics with JJ Johnson
do no use: IBM Business Continuity for Mid-Market Executive Kit
Is your business prepared for unexpected downtime? IBM knows the importance of continuous business operations in an environment where even one hour of downtime can cost more than you can afford....
A VC-Based API for Renegotiable QoS in Wireless ATM Networks
Quality of Service (QoS) support for multimedia applications has been widely discussed in the context of high speed wired networks. As interest increases in wireless ATM networks that extend the...
