What is M2M? As is known to all, besides providing more broadband speed and quality, 5G is characterized by the application of the Internet of things (IoT) from the demand and design stage. In order to adapt to different applications, mobile communication technology with no wiring, high coverage and high reusability has become an important...


The similarities and differences between industrial... 1. definition of industrial 4G router and industrial switch   Industrial 4G router:   Industrial 4G router is a network device responsible for path finding. It provides users with communication by finding the least communication from multiple paths in the interconnection network. Industrial 4G router...


4g router features of E-lins Technology With the development of new communication technologies and the continuous improvement of network efficiency and function of wireless communication, 4G has been widely used. 4G industrial-grade wireless routers are playing an increasingly important role in the applications of various industries, and the price is getting...


E-Lins Industrial router applications Industrial-grade routers as Internet network layer communication equipment application in all walks of life, brought a lot of convenience for our industry. "E-Lins" introduce the application of industrial router scenario analysis.   1 The self-service terminal network   E-lins industrial router networking...


Classification of 4G industrial routers There are many types of 4G industrial routers, which can be divided into different categories from different perspectives. Different types of 4G industrial routers can be used in different environments. The following sections classify the 4G industrial routers from different perspectives. According to the performance From...



Cellular Producuts for Wireless M2M

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Equipment is normally at remote site from anywhere in the world, which need monitor or remote management. With wireless cellular device for connection, no more expensive site visiting.

The Global System for Mobile Communications Service is the most widely use. GSM also provides a number of carefully standardized and broadly supported capabilities such as Short Message Service (SMS), circuit switched data (CSD) and General Packet Radio Services (GPRS). Used on all bands throughout the world. 900 and 1800MHz, higher bands for data and imaging. Choose from our vast range of products from a simple GSM modems to a high performance GPRS2G router or a3G HSPA router.

GSM Modems have Plug & Play solution for quick and easy integration. The wide performance range and robust case of the our modems and routers enables you to quickly develop new telemetry and telematic applications. Our GSM Modems and routers come complete with all accessories to enable you to start an application. Some even come complete with additional features, such as fixed IP SIM card, application toolkit and extended AT Commands for the industrial environment.

Mainly wireless M2M device covers:
Cellular Router;
Cellular Modem;
Cellular IP modem;
During them, router and modem is the most used.

A. Routers
1. gprs router
2. edge router
3. cdma1x router
4. HSDPA router
5. HSUPA router
6. HSPA/HSPA+ router
7. EVDO router
8. 4G LTE router

B. Modem
1. gprs modem
2. edge modem
3. cdma1x modem
4. HSDPA modem
5. HSUPA modem
6. HSPA/HSPA+ modem
7. EVDO modem
8. 4G LTE modem

Port types: RJ45 ethernet, USB, RS232, RS485, TTL.

2G router and 2g modem is for small data. 3g router and 3g modem are for big data transmission requirements.
3g wifi router is a router with wifi connection, which is convenient for management locally.

Wireless M2M Solution for Security

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Security access control system has become an extremely important part of security system.

The fundamental reason is that it takes the initiative to replace the passive monitor, such as CCTV, burglar alarms, to control main channels to prevent criminals from entering through normal channels, and that it is able to control access doors to deter crime or reduce losses. In recent years, GPRS access control system has been popular, applied to postal system, power supply system, banking system, residential area, hotels, etc.. It greatly improves security management efficiency.

Wireless M2M Solution for Traffic

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Wireless M2M Solution for Traffic

Smart Traffic is a new type of transportation of information, intelligence and socialization, making use of advanced tech, including information, communication, and control. Car satellite positioning system is quite a good example. GPRS/CDMA network could also be applied to position buses, taxies, trucks, to master the overall situation for monitor and dispatch

Wireless M2M Solution for Financial System

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Wireless M2M Solution for Financial System

POS (Point of Sales) real-time service system is the important base of realizing commercial automation.China’s banks have set up their own systems of cable access to POS systems, but the cable POS machines are always restricted by space and telecommunication lines, which make it hard to achieve the goal that card consumption can be quick and checked at anytime and anyplace. The access way of GPRS wireless POS machines can solve the problem that POS machines can only be used on some fixed occasions, which makes POS machines not restricted by the telecommunication, and now it has been widely accepted by customers, such as, hotels, gas companies, bus companies, highway authorities, banks, distribution centers, passenger ticketing centers, taxation departments, delivery companies, and mobile sales offices, etc.

Wireless M2M Solution for Water Conservancy

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Wireless M2M Solution for Water Conservancy

Hydrological station is a site to collect basic water information, the basis for hydrological work. With basin’s rapid economic growth and population growth, conflict between water supply and demand is more and more prominent.  Real-time hydrological data, collected by hydrological station, is in great demand. The use of digital video surveillance system, to collect data, image, sound, video, improves accuracy. Hydrological stations spread widely and remotely. Thus, it’s impossible to use of wired or fiber communication to delivery data. In contrast, wireless communication wiring is simple, convenient, and the cost is relatively low, saving a lot of investment. E-Lins Router series is a smart choice for hydrological application

Difference in between LTE FDD and TDD?

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What is difference in between LTE FDD & TDD?

In both LTE FDD and LTE TDD, the transmitted signal is organized into subframes of 1 millisecond (ms) duration and 10 subframes constitute a radio frame. Each subframe normally consists of 14 OFDM symbols (12 OFDM symbols in case of the so-called Extended Cyclic Prefi).

Although the frame structure is, in most respects, the same for LTE FDD and LTE TDD, there are some differences between the two, most notably the use of special subframes in TDD. Another difference is the other subframes are allocated either for uplink transmission or for downlink transmission.

In case of FDD operation, there are two carrier frequencies, one for uplink transmission (fUL) and one for downlink transmission (fDL). During each frame, there are consequently 10 uplink subframes and 10 downlink subframes and uplink and downlink transmission can occur simultaneously within a cell.

In case of TDD operation, there is only one single carrier frequency and uplink and downlink transmissions in the cell are always separated in time. As the same carrier frequency is used for uplink and downlink transmission, both the base station and the mobile terminals must switch from transmission to reception and vice versa. Thus, as a subframe is either an uplink subframe or a downlink subframe, the number of subframes per radio frame in each direction is less than 10.

Check further info at for 4G LTE info.

Embeded module MC73xx

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AirPrime MC73XX and EM73XX embedded modules deliver high speed, LTE connectivity for integration into smaller, thinner devices. Available in both MC (PCI Express Mini Card) and EM (PCI Express M.2) form factors, these modules feature multi-operator support, allowing PC OEMs to address worldwide markets, and for end-customers to choose or change their network providers without purchasing new devices.

The MC7355 /EM7355 is built for North America, the MC7305 / EM7305 for Europe, and the MC7330 / EM7330 for Japan.

Air Interface LTE
CDMA (MC7355 only)
Peak Download Rate 100 Mbps
Peak Upload Rate 50 Mbps
Regulatory Approvals MC/EM7355: FCC, PTCRB, CDG, NCC
Carrier Approvals Planned: AT&T, Verizon, Sprint, Telstra, Vodafone, NTT Docomo
USB USB 2.0 High Speed
Flash LED Output Yes
SIM Interface 1.8V or 3V
Antenna Diversity Yes
Location Solution A-GPS
Standalone GPS
Management Services No
Host OS Compatibility Windows 8
Windows 7
Device Dimensions MC: 51 x 30 x 2.75mm
EM: 42 x 30 x 2.3mm
Temperature Range -25°C to +60°C

E-Lins CPE and Devices for Wireless M2M

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  1. Industrial Class Router for 2G/3G/4G Mobile Cellular networks;

H685 series – single sim

H685m series – single sim

H820 series – single sim

H700 series – dual sim single module

H720 series – dual sim dual module


2.  Industrial Class Modem for 2G/3G/4G Mobile Cellular networks;

M300 series

M400 series


3.  Wireless Backhaul AP & CPE

WAP100 series

WAP200 series

WAP300 series

Version for Industrial Class Cellular Mobile Modem

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Nowadays wireless mobile modem and serial to gateway modem become an important part of wireless M2M system.

Mobile Modems contain different version.

1. GPRS Modem – Back compatible to GSM

2. EDGE Modem – Back compatible to GPRS/GSM

3. CDMA Modem – Back compatible

4. HSDPA Modem – Back compatible to EDGE/GPRS/GSM

5. HSUPA Modem – Back compatible to HSDP/EDGE/GPRS/GSM

6. HSPA Modem – Back compatible to HSUPA/HSDPA/EDGE/GPRS/GSM

7. HSPA+ Modem – Back compatible to HSPA/HSUPA/HSDP/EDG/GPRS/GSM

8. EV-DO Modem – Back compatible to CDMA1x

9. 4G LTE modem – Back compatible to 3G/2G

Interface: RS232 or USB or RS485 or RS422 or TTL

Speed and bandwidth of networks

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As we know, there are different types of networks for mobile networks.  Here we list the speed to compare,

GPRS Downlink 85.6 kbps, Uplink 42.8 kbps
CDMA Downlink/Uplink 153.6kbps
EDGE Downlink 236.8 kbps, Uplink 118 kbps
UMTS Downlink/Uplink 384 kbps
HSDPA Downlink 7.2 Mbps, Uplink 384k bps
HSUPA Downlink 7.2Mbps, Uplink 5.76Mbps
HSPA+ Downlink 21/42Mbps, Uplink 5.76Mbps
EVDO Rev0 2.4Mbps downlink, 153.6kbps uplink
EVDO RevA 3.1Mbps downlink, 2.4Mbps uplink
EVDO RevB 14.7Mbps downlink, 5.4Mbps uplink
TD-SCDMA 2.8Mbps
4G LTE 100Mbps downlink, 50Mbps uplink