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1、Unit 14 A. Text,Global System for Mobile communications,New Words and Expressions,subscriber sQbs5kraibE n. 用户, 订户 mainstay 5meinstei n. 支柱, 中流砥柱 infrastructure 5infrE5strQktFE n. 基础设备 version 5vE:FEn n. 版本, 译本 albeit C:l5bi:it conj. 虽然 reserve ri5zE:v v. 保留, 预定 integration 7inti5reiFEn n. 综合 approa
2、ch E5prEutF n. 途径，接近 complement 5kCmplimEnt v. 补助, 补足,incompatible 7inkEm5pAtEbl adj. 不兼容的 handset 5hAndset n. 手持机, 听筒 telecommunication 5telikEmju:ni5keiFEn n. 电讯, 电信 far beyond 远远超出 in the meantime 同时,Technical Terms,Mobile Telecommunication 移动通信 GSM (Group Special Mobile) 特别移动小组 analogue cellular
3、 network 模拟蜂窝网络 pan-European service 泛欧业务 VLSI (Very Large Scale Integration) 超大规模集成 CEPT (Conference of European Posts & Telegraphs) 欧洲邮电会议 International Roaming ability 国际漫游能力 ETSI (European Telecommunications Standards Institute) 欧洲电信标准协会 GSM (Global System for Mobile communications) 全球移动通信系统,Not
4、es,1. As a result, a directive was issued for two blocks of frequencies in the 900 MHz band, albeit somewhat smaller than recommended by the CEPT, to be reserved absolutely for a pan-European service to be opened in 1991. 于是,发表了将 900MHz 频段作为 1991 开放的泛欧业务预留的指示，尽管该频段比 CEPT 建议的要小。 该句的主干结构是 a directive
5、was issued； albeit by the CEPT 是让步状语从句。,2. It would also permit the use of Very Large Scale Integration ( VLSI ) technology which would lead to smaller and cheaper mobiles, including hand held terminals. 它将允许使用超大规模集成电路, 这将导致包括手持式移动综端在内的移动终端变得更小且更便宜。 句中 which would lead to 引导一个定语从句， 修饰 technology; in
6、cluding hand held terminals 是现在分词用作定语； Very Large Scale Integration意为“超大规模集成”, hand held terminals 意为 “手持式综端”。 3. Finally, a digital approach would complement the development of the Integrated Services Digital Network ( ISDN ) with which GSM would have to interface. 最后，数字方式将有利于综合业务数字网的实现，而综合业务数字网是 G
7、SM 不得不访问的网络。 句中 which GSM would have to interface 是定语从句，修饰Network。,4. GSM initially stood for Group Special Mobile, the CEPT ( Conference of European Posts & Telegraphs ) formed the group to develop a Pan-European cellular system to replace the many systems already in place in Europe that were all i
8、ncompatible. GSM 最初代表特别移动小组,该小组是由 CEPT (欧洲邮电会议）建立的,其目的是为了发展泛欧蜂窝系统,从而取代欧洲各互不兼容的移动系统. 该句为并列句。 用逗号连接两个分句，在后一分句中，包含一个由 that 引导的定语从句, 修饰 the many systems。,. Try to match the following columns: 1. mobile telecommunication 综合业务数字网 2. Global System for Mobile communications 移动通信 3. Integrated Services Digit
9、al Network 超大规模集成 4. mobile network 国际漫游能力 5. cellular market 移动网络 6. analogue cellular network 全球移动通信系统 7. Very Large Scale Integration 蜂窝市场 8. International Roaming ability 模拟蜂窝网络,Exercises,1. 移动通信 2. 全球移动通信系统 3. 综合业务数字网 4 . 移动网络 5. 蜂窝市场 6. 模拟蜂窝网络 7. 超大规模集成 8. 国际漫游能力,. Choose one word from the wor
10、d list below to fill in the blank in each of the following sentences. Change the form of the word where necessary: enhanced feature mobile network International Roaming ability mobile communication infrastructure cheap handset analogue system spectrum efficiency cellular market,1. GSM is one of the
11、leading in the world with over 250 million subscribers and over 60% of the world . 2. One major decision was to adopt a digital rather than an . 3. The digital system would offer improved , better quality transmission and new services with including security. 4. It the mainstay of the plans for Euro
12、pes for the 1990s. 5. The main features of GSM were to be , good sound quality, small and ability to handle high volumes of users.,mobile networks,cellular market,analogue system,spectrum efficiency,enhanced features,mobile communication infrastructure,International Roaming ability,cheap handsets,B.
13、 Reading 3G Communications System New Words and Expressions generation 7dVenE5reiFEn n. 一代；发生 contradiction 7kCntrE5dikFEn n. 反驳；矛盾 hasten 5heisn v. 促进；加速 substantive 5sQbstEntiv adj. 独立存在的, 有实质的 seamless si:mlIs adj. 无缝的 correspondence 7kCris5pCndEns n. 通信 roam rEum v.& n. 漫游, 闲逛 systematic 7sisti5
14、mAtik adj. 系统的；体系的 compatibility kEm7pAti5biliti n. 兼容性,Technical Terms,frequency band 频带 three-dimensional 三维的 system capacity 系统容量 correspondence quality 通信质量 global scope 全球范围 seamless roams 无缝漫游 3G ( the third generation mobile communications system ) 第三代移动通信系统 ITU ( the International Telecommunication Union ) 国际电信联盟,Exercises,Decide whether the following statements are true or false: 1. The third generation mobile communications system proposed as the na
