毕业论文文翻译-通用分组无线服务GPRS.docVIP

大连交通大学信息工程学院 毕业设计(论文)外文翻译 学生姓名 专业班级 信息工程09-2班 指导教师 职 称　 所在单位 电气工程系信息工程教研室 教研室主任 　 完成日期 2013 年 4 月 15 日 GPRS 1 GPRS Overview GPRS is the General Packet Radio Service English abbreviations, for General grouping wireless business in Chinese, is a kind of wireless Packet switching technology based on GSM system, provides end-to-end, wide-area wireless IP connection. Relatively original GSM dial-up way way of circuit-switched data transmission, GPRS is packet switching technology, has a real-time online, volume pricing and quick login, high speed transmission and freely switch. Informally, GPRS is a high-speed data processing technology, the method is in the form of group send data to the users hands. Although GPRS as the existing GSM network to make the transition to the third generation mobile communication technology, but it has a significant advantage in many ways. Due to the use of the group technology, Internet users relative stability, to avoid the unnecessary short-term bring trouble. In addition, the use of GPRS Internet method is different from a WAP, with WAP web site like online at home, dial-up first, and on the Internet and cant use the phone line at the same time, the GPRS download materials and can simultaneously. Technically, the transmission of sound (voice) continue to use the GSM, and can use the GPRS data transmission, in this way, the mobile phone application to promote to a higher level. Development of GPRS technology is economy, because only need to use the existing GSM network. GPRS usage is very extensive, including through the mobile phone to send and receive E-mail, browsing on the Internet, etc. GPRS and past continuous in the channel transmission in different ways, to transmit the Packet (Packet) tense, so the burden of cost calculation is based on the transmission data unit, not to use its entire channels, theoretically cheaper. GPRS transmission rate can be up to 56 or 11