摘要
现有的GSM网络采用电路交换方式,迄今为止依然受到9.6kbi/S速率的限制,因此移动数据传送时间令人难以接受,并造成费用过高.GPRS即通用分组无线业务,是GSM Phase2.1规范实现的内容之一,是一种基于GSM的新型移动分组数据承载业务,其最高速率可达到115kbit/s.文章主要介绍了GPRS的基本概念、ETSI规定的GPRS的主要内容、GPRS的业务及其具体应用、GPRS业务的推广情况以及GPRS的发展前景.由于目前GSM移动电话用户占全球4亿移动电话用户的四成以上,并且据预测今后一年内全球GSM网上传送的移动数据量将实现4O%～50%的增长率.这给GPRS的发展带来了良好的市场机遇.在GPRS的基础上,EDGE将作为GSM网络演进的下一个重要步骤.
The existing circuit-switched GSM networks are restricted by the 9.6 kbit/s rate. As part of the implementation of GSM Phase2.1 specifications, GPRS is a new mobile packet data bearer service based on GSM with the highest speed of 115 kbit/s. The basic concepts of GPRS, ETSI defined GPRS contents, GPRS services and their apps, the popularization of GPRS services and the prospects of GPRS are introduced in this paper. Today over 40% of the 450 million mobile users are GSM users and it is predicted that mobile data traffic transferred on GSM networks will increase 40%-50% in the next year, which brings good market opportunities for GPRS development. Based on GPRS, EDGE will be the next important step for GSM network' s evolution.
出处
《现代电信科技》
1999年第12期11-16,共6页
Modern Science & Technology of Telecommunications
