期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：3
页码：1311
DOI：10.15680/IJIRSET.2015.0403133
出版社：S&S Publications
摘要：Wireless communications have become very pervasive. The number of mobile phones and wireless internet users has increased significantly in recent years. Traditionally, first -generation wireless networks were targeted primarily at voice and data communicatio ns occurring at low data rates. The evolution of second- and third-generatio n wireless systems incorporates the features provided by broadband. In addition to supporting mobility, broadband also aims to support multimedia traffic, with quality of service (QoS) assurance, presence of different air interface technologies, and the need for interoperability has increasingly been recognized by the research community. Wireless networks include local, metropolitan, wide, and global areas
