GSM双频GPRS功能数字移动电话机,指的是什么意思呀

2025-03-14 04:54:47
推荐回答(1个)
回答1:

GSM指的是由欧洲开发的数字移动电话网络标准,GPRS指的是数据分组交换技术,所以GSM双频GPRS功能数字移动电话机意思指的是电话机支持两种GSM 900、GSM1800 两个频段,同时支持基于GSM系统的无线分组交换技术进行通讯。

GPRS功能相对原来GSM的拨号方式的电路交换数据传送方式,GPRS是分组交换技术,具有“实时在线”“按量计费”“快捷登录”“高速传输”“自如切换”的优点。


扩展资料

我国手机常用的频段主要有CDMA手机占用的CDMA1X,800MHz频段;GSM手机占用的900/1800MHz 频段;GSM1X双模占用的900/1800MHZ频段;3G占用的1900/2000/2100MHz频段。

GSM手机占用频段主要是900MHZ和1800MHZ。实质上1800MHZ也是由于手机用户数量的激增,造成了手机通信网络系统处于超负荷运转状态,最终导致了手机在通信时很容易出现类似于掉线、串音、话音质量不好、难以上网等故障现象。

为了解决这些故障现象,越来越多的手机运营商 和生产商开始意识到解决这个问题的迫切性,并不断采取相关措施来进一步扩容手机网络系统,于是 GSM1800Mhz便应运而生了,又被称为DCS1800(数字蜂窝系统)

参考资料来源:百度百科-GSM手机

参考资料来源:百度百科-gprs

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