SMART IP Enabling IP Applications On Wireless Networks

SMART IP Enabling IP Applications On Wireless Networks

ABSTRACT:

We know that applications such as browsers, e-mail and others utilize the TCP/IP transport protocol to communicate over the internet, intranets or LANs (and now, wireless networks). However, these applications tend to be “chatty.” Also, since TCP/IP was designed for an always connected, high-speed, wired environment, it is overhead laden, making it difficult to run in a wireless environment.

The basic theme of this paper is Smart IP which is wireless middleware that can drastically improve the performance of web-based and other IP applications, resulting in reduced communication costs, improved battery life, improved user experience and reduced development effort.

Nettech Systems, a leading supplier of wireless middleware, has recently introduced Smart IP, a product designed to overcome these obstacles. Smart IP allows TCP/IP based applications to run efficiently over wireless networks without modification.

Here we describe that, Smart IP optimizes the wireless data communication on two levels. First, it substitutes the TCP/IP transport protocol with Nettech’s optimized wireless transport layer. Next, it allows developers or corporations to create Intelligent Protocol Agents, which are used to streamline the application’s transactions and optimize high-level protocols.

In this paper we are focusing on how this optimization of data, which we are sending over the wireless network, takes place. We are also discussing about how Smart IP works, how the transportation problem is solved & other benefits of using Smart IP.

Highlights of Smart IP:

• Increases the speed of wireless transmission
• Reduces the amount of data sent over the air to lower airtime expenses
• Provides auto connect, disconnect and reconnect features for circuit-switched connectivity
• Offers intelligent agents that further enhance the performance of browser-based, FTP and Telnet applications
• Provides IP compatibility for non-IP networks
• Includes SDK for building custom intelligent agents

INTRODUCTION:

WIRELESS TCP/IP OBSTACLES:

To establish a connection or “socket” TCP requires a three-packet-overhead “handshake.” It also requires another three packets to disconnect. When you are talking about a browser-based application where every HTTP request (which is required for each graphic or file included in a page) opens and closes a socket, the overhead is excessive. This is particularly true in a wireless environment where you are paying according to the amount of data sent and each transmission uses battery power and slows the communication.

TCP also uses a “windowing” protocol that regularly sends acknowledgement packets to let the sender know the progress of the communication. Typically, TCP sends one acknowledgement packet for every one to two packets of data that are sent. Once again, this is extremely high overhead for communication over a wireless network.

Also, because TCP/IP assumes it is communicating between two devices over a wired network the TCP protocol expects to receive these acknowledgements very rapidly. In a wireless environment, where throughput speeds are much lower and users frequently move in and out of coverage or operate in “fringe” coverage conditions, the timers “expire,” causing connections to drop and restart. To make matters worse, reestablishing that connection yields yet another three-packet handshake.

SMART IP SOLVES THE PROBLEM:

Nettech Systems, a leading supplier of wireless middleware, has recently introduced Smart IP, a product designed to overcome these obstacles. Smart IP allows TCP/IP based applications (including browsers, e-mail, FTP and custom-developed applications) to run efficiently over wireless networks without modification.
Smart IP optimizes the wireless data communication on two levels. First, it substitutes the TCP/IP transport protocol with Nettech’s optimized wireless transport layer. Next, it allows developers or corporations to create Intelligent Protocol Agents, which are used to streamline the application’s transactions and optimize high-level protocols.
Smart IP overcomes the obstacles associated with running TCP/IP applications over the air and provides users with improved performance, reduced airtime expenses and extended battery life. Overall, Smart IP:

Lets organizations immediately run their existing standard Internet and Intranet applications, such as browsers, file transfer protocol (FTP), e-mail and Java and ActiveX applets, over any wireless network immediately without modification.
Allows companies to develop wireless applications using the industry standard
Winsock API;

Provides reliable, effective data communication optimized for wireless by cutting the number of packets sent by as much as 80 % and reducing the amount of data being transmitted by 30-to-60 %;
Allows enterprises to develop additional optimizations, such as message filtering or transaction buffering, to reduce the application’s “chattiness” and further improve its ability to operate in a wireless environment.


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