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随着无线技术的进步以及无线数据市场的发展,无线接入日渐成为通信领域的热门话题。从技术上讲,无线接入可以通过移动通信系统、陆上微波系统以及卫星通信系统来实现,为企业或者居民用户提供通信服务,这些服务可以包括话音、视频和数据等各个方面(图1为上述3种无线接入技术的系统示意图)。从服务上讲,无线接入可以分为移动接入服务和固定无线接入服务2种。下面我们就移动无线接入技术进行简单介绍。
With the progress of wireless technology and the development of wireless data market, wireless access has become a hot topic in the field of communications. Technically speaking, wireless access can be achieved through mobile communication systems, land-based microwave systems and satellite communication systems, providing communication services for enterprises or residential users, which can include voice, video and data (Figure 1 The above three kinds of wireless access technology system diagram). Speaking from the service, wireless access can be divided into two kinds of mobile access services and fixed wireless access services. Here we introduce a brief introduction of mobile wireless access technology.