Difference Wi-Fi And Wireless About Router

What difference between Wi-Fi, wireless?E-lins tell you detail. We frequently encounter people who confuse the many possible meanings of “wireless” because they do not understand how the term is applied in different systems.
Wi-Fi is the abbreviated name of systems consisting of servers, routers and switches in various combinations to provide access to the Internet via wireless access points.
Wireless is a more comprehensive term used to describe any system for moving data at high speed over radio circuits instead of wires or cables.
article from  http://www.szelins.com/blog/difference-wi-fi-and-wireless.html

What is Wireless 3G Modem and 4G Modem?

Definitions of 3G modem and 4G modem.

3G Modem:

A 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:

A 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.

What can a Wireless Industrial Ethernet Router do?

Industrial Ethernet Router is a router in industrial class, with Ethernet port for industrial applications. Normally wireless industrial Ethernet router work on GSM/CDMA or 3G networks, detailed on GPRS/EDGE/CDMA/EVDO/HSDPA/HSUPA/HSPA networks for data transmission.

The E-Lins H685d industrial umts router is a single port Ethernet router that utilizes the speed of HSDPA technology. This low cost 3G unit delivers the power and innovation your business requires. Robust and reliable, the, 3G H685 is the ideal communication solution for all your wireless Telemetry needs.

• M2M applications
• Vehicle tracking and management
• Automated Remote Meter Reading
• Security systems
• Agricultural Industry
• VOIP communications
• Remote Data Monitor and Control
• CCTV, security surveillance
• Water, gas and oil flow metering and schedule
• AMR (automatic meter reading)
• Power station monitoring and control
• Remote POS (point of sale) terminals, ATM,
• Traffic signals monitor and control, Traffic info guidance
• Oil field, weather forecast, environmental protection, street lamp monitoring and control
• Early Warning of Mountain Torrent
• Fleet management
• Power distribution network supervision
• Central heating system supervision
• Weather station data transmission
• Hydrologic data acquisition
• Vending machine
• Telemetry, SCADA
• Vehicle logistics and diagnostics controlling
• Parking meter and Taxi Monitor
• Telecom equipment supervision (Mobile base station, microwave or optical relay station)

Industrial router can work on hard circumstance and environment, high temperature, dusty, humity, and other complex area. We can mainly call it as wireless M2M application short for machine-to-machine. The router is connected to the machine, and remotely does transmission to another machine or data management centre.

H685d hsdpa router is with 7.2Mbps speed maximum, and can be easily upgraded to HSPA Router for 14.4Mbps or even higher speed.

Difference of Cellular Router and Modem

What is Cellular Router?

A cellular router is short for cell router, is a router provides shared Internet access by incorporating a cellular data modem and providing common interfaces like Ethernet and WiFi. Different cellular routers work on different networks.

Cellular network are divided into GSM cellular, CDMA cellular and3Gcellular, meanwhile, there are GSM router, CDMA Router and 3G Router.

They can be deployed as a primary WAN link to a location where wired connections are not cost-effective, can also be used as a secondary or business continuity plan should the primary cabled link fail, or can be used in moving vehicles to provide Internet access while in motion. Cellular routers range from simpleSOHOnetwork oriented devices through rugged industrial units with advanced features.

For SOHO and high data requirement,3G Router are the best to use. For small data package transmission, GSM router and CDMA router are enough.

EVDO Router, HSDPA Router, HSUPA Router and HSPA Router are hot used in many different areas such as coffee shop, small shop, home, airport, etc.

What is Cellular Modem?

A cellular modem is a modem provides internet access by the cellular networks on GPRS/EDGE/HSDPA/HSUPA/HSPA or CDMA/EVDO networks. 3g usb stick is widely used for people’s internet.

Cellular modem provides a USB port or RS232 port. USB port is for high speed data transmission. RS232 port normally is for industrial application for SMS and small package data transmission.

Router support route features, we can think it built-in modem. Modem is a simple dialing device.

Cellular Router contains Industrial Ethernet Router and SOHO Router.

Cellular Modem contains Industrial Modem and SOHO Modem.

Cellular 3G Technology Vs 4G Technology

4G technology is with us already in some cities. What can 4G bring us?

The following table shows comparisons between some key parameters of 3GVs possible 4Gsystems.

 

Item	3G	4G
Frequency Band	1.8 – 2.5 GHz	2 – 8 GHz
Bandwidth	5-20 MHz	5-20 MHz
Data rate	Up to 2Mbps ( 384 kbps WAN)	Up to 20 Mbps or more
Access	Wideband CDMA	Multi-carrier-CDMA or OFDM(TDMA)
FEC	Turbo-codes	Concatenated codes
Switching	Circuit/Packet	Packet
Mobile top speeds	200 kmph	200 kmph

 In the next topics, we mainly discuss the 4g terminal and 3g terminal comparasion, especially the 4g lte router and 4g lte modem.

Cellular 3g router with wireless modules MC8790

Nowadays 3g router mostly has two types. Firstly 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

Wireless Router

Wireless router is very important for personal network living.

From technology, Wireless router is mainly classified in wireless wifi router, wireless wimax router, and wireless cell router.

From used filed, wireless router is classified soho (also called in non-industrial) class, and industrial class for Industrial Ethernet Router.

SOHO is for large data use, for example 3G router (including EVDO Router, HSDPA Router, and HSUPA Router, and HSPA Router.)

A wireless router is a device that performs the functions of a router but also includes the functions of a wireless access point and a network switch. They are commonly used to allow access to the Internet or a computer network without the need for a cabled connection. It can function in a wired LAN (local area network), a wireless only LAN (WLAN), or a mixed wired/wireless network. Most current wireless routers have the following characteristics:

1. LAN RJ45 ports, normally 1 or 2 or 4 ports, which function in the same manner as the ports of a network switch

2.      A WAN port, normally 1 RJ45 port to connect to a wide area network, typically one with Internet access. External destinations are accessed using this port. If it is not used, many functions of the router will be bypassed.

3.      Wireless antennae. These allow connections from other wireless devices (NICs (network interface cards), wireless repeaters, wireless access points, and wireless bridges, for example), usually using the Wi-Fi standard.

4.      Some wireless routers also include a DSL or cable modem in addition to their other components.

As for the wireless antenna, contains GSM/3G cellular antenna and WiFi/Wimax antenna, with different connecting type, such as SMA. Normally antenna is default packed by manufacturer. High gain antenna is available for replacement to receive better and stronger signal so as to get good receiving and transmission of data.