Definitions of 3G modem and 4G modem

What is 3G modem and 4G modem?

Here we definitions of 3G modem and 4G modem.

3G Modem:

3G modem is a terminal device for dialup. Also known as a Cellular Modem, Mobile Modem, Mobile IP Modem, Wireless Modem) A wireless adapter that connects a laptop computer or other device to a cellular telephone system for data transfer. Cellular modems, often contain their own antennas and plug into a PC Card slot, a serial port or into the USB port of the computer or other device. Cellular modems can operate on a variety of wireless data services such as GPRS, EDGE, UMTS, HSPDA, HSPUA, 1x and EV-DO.

4G Modem:

4G modem is from tourth generation mobile communications technology. A somewhat vague term used to describe wireless mobile radio technologies that offer faster data rates than current 3G (third generation) technologies. 4G networks are also more data-centric and based on standard Internet technologies such as IP. Voice service is typically provided using a special form of VoIP. WiMAX and LTE are examples of 4G technologies. 4G LTE is most popular with 4G TDD LTE and FDD LTE.

Hot cellular 3g router with wireless modules MC8790

3g router mostly has two types. One is built-in 3g module. The other one is with usb host and work with an external modem.

Sierra MC8790 series is one of 3g modem module popular for 3g routers.

Short Info:

Sierra Wireless AirPrime MC8790 and MC8790V embedded wireless modules provide wide area wireless data access at speeds up to 7.2 Mbps downlink and up to 5.76 Mbps uplink. These modules offer UMTS/HSPA and quad-band GSM/GPRS/EDGE network access for roaming on high-speed networks worldwide. In addition, antenna diversity improves fringe performance on global HSPA networks using the 850, 1900 and 2100 MHz bands

Key Features:

• Peak downlink speeds up to 7.2 Mbps and peak uplink speeds up to 5.76 Mbps
• Uses MSM6290™ chipset from QUALCOMM
• World class product performance, quality and reliability
• Solid documentation, tool development and consultation services
• Solid support for device integration and verification
• Comprehensive SDK and enabling software
• Flexible driver strategy with NDIS support and non-NDIS abilities

Key Benefits:

• High-speed, broadband connectivity
• Best-in-class technical and integration support
• Easy integration
• Premium functionality and performance
• Compact size and light weight
• Antenna diversity for improved fringe performance
• Triband for global connectivity

Specifications

Air Interface	HSUPA HSDPA EDGE GPRS GSM
Frequency Bands	WCDMA 850/1900/2100 MHz EDGE/GPRS/GSM 850/900/1800/1900 MHz
Approvals	FCC, IC, CE, GCF, PTCRB, A-Tick, AT&T, Telstra, NTT DoCoMo, Softbank, Bell
Standby and Idle Power	4-5mA
GSM GPRS Max Power	2.6A
HSxPA Max Power	720mA
CPU IO Voltage Performance	2.6V
Codec	HR, FR, EFR, AMR
Echo Cancellation and Noise Reduction	Yes
DTMF	Yes
UART	1x 8-wire
USB	USB 2.0 high speec
ADC	1
Flash LED Output	1
PWM Buzzer	No
Keyboard Interface	No
SIM Interface	1.8V or 3V
Antenna Diversity	Yes
Location Solution	gpsOne
Embedded SIM	No
Control Options	AT commands
Device Management	No
Drivers	Windows 7 Windows 7 Mobile Broadband Windows Vista Windows Vista x64 Windows XP Windows XP-x64 Linux Windows CE Windows Mobile
Device Dimensions	51x30x4.5mm

GPRS Router and GPRS Modem

What is GPRS?

GPRS is a cellular network stands for General Packet Radio Service, and it is a protocol for passing data over a mobile phone network. Here is more info knowing about GPRS,

1. GPRS replaced dial-up cellular modem and cellular router Internet access, offering faster browsing of Internet content and email. It’s an “always on” service”.
2. GPRS on a cellular modem and cellular router doesn’t use a phone number to connect; it uses something called an APN (Access Point Name).
3. GPRS has now been largely superseded by faster data network services known as 3G

Mostly the GPRS Router and GPRS Modem are the used to meet users’ internet connection at the beginning. And now the 3G modem and router are more and more popular for high data interconnections.

GPRS and 3G APN settings info.

Normally it requires the four parameters.

1.      Service code (dialing number)

2.      Username

3.      Password

4.      APN code

For example GPRS APN info in China,

Network Provider	Service code	Username	Password	APN code
China Mobile	*99***1#			cmnet
China Union	#777	card	card

And 3G APN info

Network Provider	Service code	Username	Password	APN code
China Mobile	*99#			3gnet
China Union	*99#			uninet

In a word, different network provider can use the same service code, username and password, but owns different APN code.