A mobile broadband modem is a type of modem that allows a personal computer or a router to receive Internet access via a mobile broadband connection instead of using telephone or cable television lines. A mobile Internet user can connect using a wireless modem to a wireless Internet Service Provider (ISP) to get Internet access.
Insert the modem driver disc in your CD/DVD-ROM and follow the onscreen instructions to install the driver After you have reinstalled the modem drivers, try connecting to the Internet via the modem. If the problem persists, locate and download the latest driver from your modem manufacturer’s website. Qualcomm® Gobi™ Firmware and Huawei Gobi 3000 HS-USB Modem driver Original device drivers from the Sony support site Note: It is not necessary to revert to the original drivers if you have properly installed updated drivers from the Sony® support site.
History[edit]
1G and 2G[edit]
While some analogue mobile phones provided a standard RJ11 telephone socket into which a normal landline modem could be plugged, this only provided slow dial-up connections, usually 2.4 kilobit per second (kbit/s) or less. The next generation of phones, known as 2G (for 'second generation'), were digital, and offered faster dial-up speeds of 9.6kbit/s or 14.4kbit/s without the need for a separate modem. A further evolution called HSCSD used multiple GSM channels (two or three in each direction) to support up to 43.2kbit/s. All of these technologies still required their users to have a dial-up ISP to connect to and provide the Internet access - it was not provided by the mobile phone network itself. Ics port devices driver list.
The release of 2.5G phones with support for packet data changed this. The 2.5G networks break both digital voice and data into small chunks, and mix both onto the network simultaneously in a process called packet switching. This allows the phone to have a voice connection and a data connection at the same time, rather than a single channel that has to be used for one or the other. The network can link the data connection into a company network, but for most users the connection is to the Internet. This allows web browsing on the phone, but a PC can also tap into this service if it connects to the phone. The PC needs to send a special telephone number to the phone to get access to the packet data connection. From the PC's viewpoint, the connection still looks like a normal PPP dial-up link, but it is all terminating on the phone, which then handles the exchange of data with the network. Speeds on 2.5G networks are usually in the 30–50kbit/s range.
3G[edit]
3G networks have taken this approach to a higher level, using different underlying technology but the same principles. They routinely provide speeds over 300kbit/s. Due to the now increased internet speed, internet connection sharing via WLAN has become a workable reality. Devices which allow internet connection sharing or other types of routing on cellular networks are called also cellular routers.
A further evolution is the 3.5G technology HSDPA, which provides speeds of multiple Megabits per second. Several of the mobile network operators that provide 3G or faster wireless internet access offer plans and wireless modems that enable computers to connect to and access the internet. These wireless modems are typically in the form of a small USB based device or a small, portable mobile hotspot that acts as a WiFi access point (hotspot) to enable multiple devices to connect to the internet. WiMAX based services that provide high speed wireless internet access are available in some countries and also rely on wireless modems that connect to the provider's wireless network. Wireless USB modems are nicknamed as 'dongles'.
Early 3G mobile broadband modems used the PCMCIA or ExpressCard ports, commonly found on legacy laptops. The expression 'connect card' (instead of connection card) had been registered and used the first time by Vodafone as brand for its products but now is become a brandnomer or genericized trademark used in colloquial or commercial speech for similar product, made by different manufacturers, too. Major producers are Huawei, Option N.V., Novatel Wireless. More recently, the expression 'connect card' is also used to identify internet USB keys.[1] Vodafone brands this type of device as a Vodem.[2]
Often a mobile network operator will supply a 'locked' modem or other wireless device that can only be used on their network. It is possible to use online unlocking services that will remove the 'lock' so the device accepts SIM cards from any network.
Variants[edit]
Standalone[edit]
Standalone mobile broadband modems are designed to be connected directly to one computer. In the past the PCMCIA and ExpressCard standards were used to connect to the computer. As USB connectivity became almost universal, these various standards were largely superseded by USB modems in the early 21st century. Some models have GPS support, providing geographical location information.[3]
Integrated router[edit]
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Many mobile broadband modems sold nowadays also have built-in routing capabilities. They provide traditional networking interfaces such as Ethernet, USB and Wi-Fi.[4]
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Smartphones and tethering[edit]
Numerous smartphones support the Hayes command set and therefore can be used as a mobile broadband modem. Some mobile network operators charge a fee for this facility,[5] if able to detect the tethering. Other networks have an allowance for full speed mobile broadband access, which—if exceeded—can result in overage charges or slower speeds.[6]
An Internet-accessing smartphone may have the same capabilities as a standalone modem, and, when connected via a USB cable to a computer, can serve as a modem for the computer. Smartphones with built-in Wi-Fi also typically provide routing and wireless access point facilities. This method of connecting is commonly referred to as 'tethering.'[6]
Service providers[edit]
There are competing common carriersbroadcasting signal in most countries.
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Technologies[edit]
- CDMA2000 (3G)
- EVDO (3G, although could be considered to be 3.5G due to its peak bandwidth)
- GPRS (2.5G)
- HiperMAN (pre-4G)
- HSDPA (3.5G)
- HSPA+ 3.75G
- iBurst (pre-4G)
- LTE (4G)
- LTE Advanced (4G)
- UMTS (3G)
- WiBro (pre-4G)
- WiMAX (pre-4G)
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Device driver switching[edit]
Mobile broadband modems often use a virtual CD-ROM switching utility and have the device drivers on board. Those modems have two modes, a USB flash drive mode and in the other mode they are a modem. Via the USB Protocol.
See also[edit]
References[edit]
- ^'Devices for Portable Wi-Fi & Mobile Hotspot - AT&T'.
- ^'Error'.
- ^'Phone'. Sony Xperia (Global UK English). Archived from the original on 1 June 2009.
- ^Danny Briere; Pat Hurley; Edward Ferris (2008). Wireless Home Networking for Dummies (3 ed.). For Dummies. p. 265. ISBN978-0-470-25889-7.
- ^Brian Nadel (November 4, 2011). 'Wi-Fi tethering 101: Use a smartphone as a mobile hotspot'. Computerworld. Retrieved 2012-01-16.
- ^ abKim, Eugene and Alex Colon, 'The Best Mobile Hotspots of 2015', June 10, 2015, PC Magazine retrieved November 4, 2015
External links[edit]
- Media related to Wireless modems at Wikimedia Commons