INTRODUCTION OF WIRELESS COMMUNICATION :
The wireless industry continues to provide new opportunities and challenges. The proliferation of wireless devices, plus the ever-increasing bandwidth requirements envisioned for future packet data applications, is creating a vast array of effort to support that end goal.As with any new technology or platform being introduced for use in the market, no true benchmark can be followed because there is no real legacy or current information from which to pattern after.
This book is meant to help reduce the potential confusion with the multitude of issues associated with mobile data implementation into an existing or new wireless system, which uses either UMTS or CDMA2000.The present operators are currently in the process of building a 2.5G platform in anticipation of high-speed packet usage or they are still contemplating if and when to make the plunge.
As always, when migrating from a 2G platform to a 2.5G or even 3G, numerous decisions and alterations to the existing network must take place.Because the IMT2000 specification has several platforms all called 3G, and since they meet particular data throughput requirements, the decisions are vast and critical for an operator to make. Whichever platform is chosen will fundamentally determine the success or failure of the wireless operator in any given market.
It is also interesting to note that depending on the market and services desired, plus the legacy system, several methods are available for migrating from a 2G to a 3G platform. For example, various vendor implementations of CDMA2000 exist for 1XRTT and 3XRTT (future), and just picking a particular platform type is the first step.The next,of course,is understanding how the vendor will try and realize the system.
This book will cover the common functions that exist among the various implementations, and it also will address the design rules to follow. The specific vendor card requirements and methods for how to implement the standards are not covered here.
The book is meant to establish design guidelines and a fundamental understanding of UMTS and CDMA2000 in a concise area for the stated purpose of helping orientate the engineer into focusing with each vendor on the specific areas that are most relevant for the design andimplementation.
This is not to say that the nuances associated with each vendor’s implementation are not important; however, in a multi-vendor environment that most operators are now working in, the fundamental commonality among overall design principals is the common thread that binds them together from an engineering perspective.