TAILIEUCHUNG - Điện thoại di động băng thông rộng không dây P4

The successful deployment and worldwide acceptance of the second-generation (2G) mobile telecommunication systems combined with the need for more advanced and ubiquitous mobile services have paved the way to the initiative of the so-called third-generation (3G) mobile telecommunication systems. In this chapter, we will discuss the network architecture of 3G systems, . we will describe how the network is built, what functional elements exist, what overall functionality is provided, etc. | Broadband Wireless Mobile 3G and Beyond. Edited by Willie W. Lu Copyright 2002 John Wiley Sons Ltd. ISBN 0-471-48661-2 3 Network Architecture Introduction The successful deployment and worldwide acceptance of the second-generation 2G mobile telecommunication systems combined with the need for more advanced and ubiquitous mobile services have paved the way to the initiative of the so-called third-generation 3G mobile telecommunication systems. In this chapter we will discuss the network architecture of 3G systems . we will describe how the network is built what functional elements exist what overall functionality is provided etc. Through this discussion the main differences between the architecture of 2G and 3G systems will be illustrated and the advanced features of 3G systems will become apparent. Finally we will discuss the evolution of 3G systems which shows how the 3G systems are expected to evolve in the future and lead to the next generation of mobile telecommunications systems. It is important to keep in mind that the architecture of 3G systems was based 1 on a number of market requirements and 2 on the characteristics of the installed infrastructure base pertaining to 2G systems. Indeed since many network vendors had already invested in a large number of network elements it was desired to keep those elements in 3G systems wherever possible. Also both end-users and network operators have formulated a list of requirements for 3G systems. From the end-user s point of view the key requirements included worldwide operation advanced services with emphasis on multimedia applications intelligent terminals and enhanced quality. On the other hand from the network operator s viewpoint key requirements included whatever was related to increased revenue and flexible management and operation such as enhanced network capacity . serve more customers in a given area increased resources utilisation advanced network management enhanced security flexible and fast .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.