Emerging mobile and personal communication systems
Emerging mobile and personal communication systems
复制标题
新兴的移动和个人通信系统
DOI：
10.1109/35.387549
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发表时间：
1995
影响因子：
11.2
通讯作者：
R. Pandya
中科院分区：
文献类型：
--
作者：
R. Pandya
针对特定应用和环境进行优化的不同第二代无线技术的快速增长证明了无线通信的市场需求。明显的例子包括：用于广泛的车辆和行人服务的 GSM、ADC、PDC 和 DCS1800 等数字蜂窝系统，以及用于住宅、商业和公共无绳接入应用的基于 CT2、DECT 和 PHS 标准的无绳电信系统。我们还在努力将各种无线电环境和应用整合到第三代无线的单一标准（即 FPLMTS）下。在个人移动领域，随着近年来“个人”号码在各国的普及（例如美国的500号码），许多固网运营商开始提供“个人号码服务”、“携号转网”等个人移动服务。这些服务代表了 UPT 将在有线和无线环境中提供的全面个人移动性的初始阶段。美国对 PCS 的预期强劲需求以及潜在的市场/监管力量正在推动标准化和商业活动。目前正在考虑针对 1900 MHZ PCS 频段的多种空中接口标准，这些标准单独或组合基于 TDMA、CDMA 和 FDMA 技术。许多是现有数字蜂窝和无绳电信技术的变体。 PCS网络标准也正在开发中； both for standalone systems and for systems that will utilize public switched network capabilities. >
The market demand for wireless communications has been demonstrated by the rapid growth of different second-generation wireless technologies that are optimized for particular applications and environments. Obvious examples include: digital cellular systems like GSM, ADC, PDC,and DCS1800 for widespread vehicular and pedestrian services, and cordless telecommunication systems based on CT2, DECT, and PHS standards for residential, business, and public cordless access applications. Efforts are also underway to consolidate the various radio environments and applications under a single standard for third generation wireless, i.e., FPLMTS. In the area of personal mobility, with the recent availability of "personal" numbers in various countries (e.g., 500 numbers in the United States), many fixed network operators are starting to offer such personal mobility services as "personal number service" and "number portability". These services represent initial stages of full personal mobility that will be provided by UPT in both wireline as well as wireless environments. The expected heavy demand for PCS in the United States and the underlying market/regulatory forces are driving the standardization and business activity. A number of air interface standards for the 1900 MHZ PCS band are being considered, which are based on TDMA, CDMA, and FDMA technologies singly or in combination. Many are variations of existing digital cellular and cordless telecommunications technologies. PCS networking standards are also being developed; both for standalone systems and for systems that will utilize public switched network capabilities. >