China Mobile GPRS is a mobile data service available to GSM mobile phone users. It is a data transmission technology in the second generation of mobile communications. China Mobile's 2G uses GSM technology, but the original GSM could only carry voice services. In other words, GSM technology can only make phone calls, but cannot access the Internet. In fact, in the process of 2G and 3G, a term called 2.5G emerged. GPRS is a type of 2.5G. It is a technology that carries data services on GSM networks. Therefore, in the 2G era of China Mobile, mobile phones used this technology to access the Internet.
Packet switching technology is an important data transmission technology on computer networks. In order to achieve support from traditional voice services to emerging data services, GPRS superimposes a network that supports high-speed packet data on the original GSM network. Users are provided with WAP browsing (Internet web page browsing), email and other functions, promoting the first leap-forward development of mobile data services and realizing the perfect combination of mobile communication technology and data communication technology (especially Internet technology).
GPRS is the English abbreviation for General Packet Service. Simply put, it is the Internet connection method for mobile phones. Once the phone has activated the GPRS service, you can use the phone to access the Internet. Of course, this includes downloading the latest mobile games online.
CMWAP and CMNET are just two GPRS access methods artificially divided by China Mobile. The former is set up for WAP Internet for mobile phones, while the latter mainly uses GPRS Internet services for PCs, laptops, PDAs, etc. There is no difference between these implementation methods, but due to different positioning, compared with CMNET, CMWAP has some restrictions and the cost is also different.
GSM is the European 2G standard, which can only make calls and send emails. GPRS is an extension of GSM and supports mobile Internet connections, so it is called 2.5G. GSM/GPRS uses TDMA technology to multiplex channels between multiple mobile phones. CDMA IS95 is the 2G standard in the United States, and the technology is lagging behind GSM, so some people call it 2.5G. CDMA The multiplexed channel technology in the IS95 standard is also called CDMA. The two are sometimes confused. The multiplexed communication technology used in the 3G standard is also CDMA, including WCDMA (Europe), CDMA2000 ), TD-CDMA (China) three standards. China Mobile uses GSM/GPRS/TD-CDMA.
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