Quality of Service within Wireless ATM - Essay Example

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As the demand for personal mobile devices and services increase, the popularity of ATM (Asynchronous Transfer Mode) networks have also increased. ATMs are a from of adaptable broadband communication systems, and with the coming of wireless ATM would greatly increase the ease of accessibility of advanced applications and other electronic functions while on the go…
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Quality of Service within Wireless ATM
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Download file to see previous pages In today's modern society, the two major electronic systems that are patronized today are Broadband internet connections and mobile devices and technology. For the future of broadband connections, ATM or Asynchronous Transfer Mode is seen as the best method of transferring data for Broadband Integrated Services Digital Networks (B-ISDN) mainly due to tits ability to support many types of services other than voice and music data. For indoor data communications however, LANs or Local Area Networks are more preferred because of their almost seamless and faster data transfer speeds. It is in this sense that the combination of wireless and ATM technologies would greatly enhanced LAN environments. (Passas et al, n.d.).
There quite a number of studies that explore specific coding/retransmission techniques in wireless communication systems (Nakao et al, 1996; Lambrette et al, 1997). All of these featured protocol/control schemes are tested in so-called one-on-one scenarios and there had not been cases where the performance or behaviour of wireless ATM system would perform in a data/resource sharing environment or scenario that involves multiple units. These studies may have shown the capabilities of specific applications of wireless ATMs but it cannot be a basis for the use of wireless ATMs in a networked scenario. There are cases that some of the studies were conducted that are irrelevant or unrelated to the study of ATMs such as GSM/DECT tests and channel behaviour (a channel with iid errors is often assumed) (Lessandro et al, n.d.).

ATM Overview
Asynchronous Transfer Mode or ATM for short is a group or network of 'fast packet switching systems' that are linked through point-to-point node connections. An ATM 'fast packet' typically consists of a total of 53 bytes in which 48 bytes is dedicated to data while 5 bytes is dedicated to control information. In order for data to be transferred securely form these connections; a point-to-point connection must exist between the 2 host systems. The level of service between the 2 host must be set-up initially before data exchange can be facilitated between them (Bhalla, n.d.).

Wireless ATMs are being seriously considered to be the next framework for next generation wireless connections which will be able to support various advanced multimedia services with different levels of Quality of Service (QoS) requirements. There have also been thoughts on how wired broadband ATM systems can be extended into wireless ATM systems. This is mainly due to the fact that ATM provides the advantage of statistical multiplexing (flexible bandwidth allocation) and quality of service (QoS) that other systems cannot provide. This move is suggested because of the increasing demand for mobile devices like portable computers, cellular phones and other similar devices. Modern consumers rely on these devices for daily transactions and other activities so the rate of development for incorporating ATM systems is considered as the next big leap not only for communications but also for the future of human society itself (Osama et al, 1997).

Wireless ATM
Wireless ATM is similar to wired ATM with the addition of several new features such as increased mobility for the user, dependability and the ability to support various ...Download file to see next pagesRead More
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