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The advantage of using wireless data transmission module... Data transmission can be simply divided into two major types: wired (including the installation of optical cables, cables or leased telecommunication lines) and wireless (including the establishment of dedicated wireless data transmission system or the borrowing of CDPD, GSM, CDMA and other public network information platforms).     In...

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Industrial-grade 4G router TCP/IP network architecture 1. Layering of TCP/IP network system   TCP/IP (TransmissionControlProtocol/InternetProtocol), transmission control protocol/Internet protocol. It was developed by the defense advanced research projects agency in the 1970s, and was later integrated into UNIX and popularized. It emerged in the 1980s as the Internet's...

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The structure of 4G DTU The main function of DTU is to transmit data from remote devices back to the background center via wired/wireless. Different data transmission modes of DTU include all-network-connected DTU, GPRS DTU, WIFI DTU, CAN DTU and 4G DTU. Today, we will have a look at the structure and work flow of DTU.   To complete...

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What are the wireless connection technologies of the... Internet of things (iot) applications have been deeply rooted in our lives. The E-Lins H685 industrial-grade router is a small industrial-grade wireless router with single or double LAN ports. TDD/ fdd-lte, 4G, 3G, GPRS network optional. Besides, what are the wireless connectivity technologies for the Internet of things?   1....

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The use of industrial wireless routers Industrial-grade wireless router adopts high performance 32-bit industrial-grade ARM9 communication processor, which is widely used in finance, electric power, postal, water conservancy, environmental protection, meteorology and other industries.   Industrial router is mainly used in intelligent transportation,...

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Wireless M2M devices in the oil and gas industry

Category : 技术相关

Wireless M2M devices in the oil and gas industry,E-lins  are M2M players that deliver solutions to a wide range of industries, including oil & gas.

North America is the most advanced market for M2M applications in the oil & gas sector. The region is also the home of a majority of the players specialising in the oil & gas industry. E-lins are major vendors of field instrumentation, equipment, services and M2M solutions for the of the oil & gas industry.

According to a new research report from E-lins (wireless m2m manufacturer), the number of devices with cellular or satellite connectivity deployed in oil & gas applications worldwide was 423,000 at the end of 2013.

Growing at a CAGR of 21.4 percent, this number is expected to reach 1.12 million by 2018. The split between cellular and satellite based M2M devices at the end of the forecast period will be 871,000 units and 244,000 units respectively. The oil & gas industry is characterized by remote and inaccessible facilities where wireless communication in many cases is the only viable option for transferring M2M data.

Industrial LTE Router For Secure M2M Communication

Category : 其他, 技术相关

E-Lins  has expanded it’s M2M router  in  LTE. This router solutions for LAN-WAN , GPRS , UMTS and LTE now available .

E-Lins Industrial LTE router is a high- performance router for industrial use , which can be sensitive data securely via cellular networks. The integrated firewall and VPN support protect your application secure from unauthorized access. If LTE is not available, the system automatically switches to UMTS / GPRS / EDGE.In addition, the data connection and the mobile network quality to be monitored. If necessary, a message is sent or rebuilt the cellular connection.The configuration of the router via the built-in web server, or XML files in the remote mode.

Other important features are:

Supply voltage : DC5V~40V is the default, DC5V~50V is the option
extended temperature range of -30 ~ 75°C
integrated overvoltage protection

Optional all Router with RS232 and RS485 interface for transparent serial transmission over a TCP / IP are available .

2.4Ghz WiFi Comparation

Category : 技术相关

WLAN communication criterion live through 802.11a, 802.11b, 802.11g and nowadays’ main 802.11n and 802.11ac.

802.11b 11Mbps
802.11 Super b 22Mbps
802.11g/802.11a 54Mbps
802.11 Super G 108Mbps
802.11 High Speed-G 125Mbps
802.11n 150Mbps
802.11n 300Mbps
802.11n 450Mbps
802.11ac 1200Mbps

450Mbps is the fastest WLAN in 2.4Ghz band. Comparing to 300Mbps wireless products, 450Mbps products have higher transmission band, provide high-efficient steam,more stability and wider coverage.
Real 450Mbps Wireless Products use three WiFi antenna. 150Mbps is two stream in 802.11N protocols. 450Mbps is three stream. One antenna sends and receives one stream, so 300M uses 2 WiFi antenna which is enough.
All E-Lins’ Cellular routers have WiFi feature option. H685 and H820 series use 150Mbps, and H700/H720 series use 300Mbps. H860 openWRT series has expansion WiFi slot for different band even for 450Mbps and 802.11ac dual band.

Radio module ME909u-523 mini PCIe for Wireless M2M

Category : 技术相关

Specification

ME909u-523 Mini PCIe is a variant of ME909u-523 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-523 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-523 Mini PCIe:
LTE (FDD) B2/B4/B5/B17
DC-HSPA+/HSPA+/HSPA/UMTS tri-band 850/1900/AWS MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)
Interface
Antenna connector
PCIe interface
USB 2.0 High speed
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

ME909u-521 radio module for Wireless M2M

Category : 技术相关

Specification

ME909u-521 (for Asia, Europea, Africa) Mini PCIe is a variant of ME909u-521 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-521 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-521 Mini PCIe:
LTE (FDD) B1/B2/B3/B5/B7/B8/B20
DC-HSPA+/HSPA+/HSPA/UMTS dual-band B1/B2/B5/B8
EDGE/ GPRS/ GSM quad-band 850/900/1800/1900 MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)

Interface

Antenna connector
PCIe interface
USB 2.0 High speed
PCM Voice
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

Advantages and Disadvantages of 4G LTE TECNOLOGY

Category : 技术相关

Today we talk some advantages and disadvantages of 4G LTE TECNOLOGY.  4G LTE is the 4th generation wireless mobile networks.  With high data speed, the 4G can reach 100Mbps, 150Mbps and 300Mbps, future will update to 1000Mbps.

Advantages
-support for interactive multimedia, voice, streaming video, Internet, and other broadband services -IP based mobile system-High speed, high capacity, and low cost per bit. -global access, service portability, and scalable mobile services -Seamless switching and a variety of Quality of

-Better spectral efficiency. Service driven services.
- Better scheduling and call admission control techniques

Disadvantages
-Expensive and hard to implement
-bettery usage is more
-needs complex hardware

TDD LTE and FDD LTE’s Advantages / disadvantages of for cellular communications

Category : 技术相关

Let’s talk something about TDD LTE and FDD LTE’s Advantages / disadvantages of for cellular communications.

As we know, the LTE mainly covers two types, which are TDD and FDD. There are a number of the advantages and disadvantages of TDD and FDD that are of particular interest to mobile or cellular telecommunications operators. These are naturally reflected into LTE.

COMPARISON OF TDD LTE AND FDD LTE DUPLEX FORMATS
PARAMETER TDD LTE FDD LTE
Channel reciprocity Channel propagation is the same in both directions which enables transmit and receive to use on set of parameters Channel characteristics different in both directions as a result of the use of different frequencies
Paired spectrum Does not require paired spectrum as both transmit and receive occur on the same channel Requires paired spectrum with sufficient frequency separation to allow simultaneous transmission and reception
Hardware cost Lower cost as no diplexer is needed to isolate the transmitter and receiver. As cost of the UEs is of major importance because of the vast numbers that are produced, this is a key aspect. Diplexer is needed and cost is higher.
UL / DL asymmetry It is possible to dynamically change the UL and DL capacity ratio to match demand UL / DL capacity determined by frequency allocation set out by the regulatory authorities. It is therefore not possible to make dynamic changes to match capacity. Regulatory changes would normally be required and capacity is normally allocated so that it is the same in either direction.
Guard period / guard band Guard period required to ensure uplink and downlink transmissions do not clash. Large guard period will limit capacity. Larger guard period normally required if distances are increased to accommodate larger propagation times. Guard band required to provide sufficient isolation between uplink and downlink. Large guard band does not impact capacity.
Cross slot interference Base stations need to be synchronised with respect to the uplink and downlink transmission times. If neighbouring base stations use different uplink and downlink assignments and share the same channel, then interference may occur between cells. Not applicable
Discontinuous transmission Discontinuous transmission is required to allow both uplink and downlink transmissions. This can degrade the performance of the RF power amplifier in the transmitter. Continuous transmission is required.

 

what is 4g lte for wireless M2M

Category : 技术相关

What is LTE?

LTE (Long-Term Evolution, commonly marketed as 4G LTE) is a standard for wireless communication of high-speed data for mobile phones and data terminals. It is based on the GSM/EDGE and UMTS/HSPA network technologies, increasing the capacity and speed using a different radio interface together with core network improvements. The standard is developed by the 3GPP (3rd Generation Partnership Project) and is specified in its Release 8 document series, with minor enhancements described in Release 9.

LTE is the natural upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. The different LTE frequencies and bands used in different countries will mean that only multi-band phones will be able to use LTE in all countries where it is supported.

Although marketed as a 4G wireless service, LTE (as specified in the 3GPP Release 8 and 9 document series) does not satisfy the technical requirements the 3GPP consortium has adopted for its new LTE Advanced standard. The requirements were originally set forth by the ITU-R organization in its IMT Advanced specification. However, due to marketing pressures and the significant advancements that WiMAX, Evolved High Speed Packet Access and LTE bring to the original 3G technologies, ITU later decided that LTE together with the aforementioned technologies can be called 4G technologies.The LTE Advanced standard formally satisfies the ITU-R requirements to be considered IMT-Advanced.[4] To differentiate LTE Advanced and WiMAX-Advanced from current 4G technologies, ITU has defined them as “True 4G”

Dual Sim 4G Router for Japan

Category : 产品文章, 伊林思产品FAQ

Series: H750 Router (industrial grade, dual sim one modem, LAN RJ45*3+WAN RJ45*1, option: RS232/RS485); One sim work online, the other standby, switch freely, cold standby failure backup each other
Detailed spec link1: http://www.szelins.com/download/H750_Datasheet_Eng.pdf
Detailed spec link2: http://www.e-lins.com/EN/download/H750_Datasheet_Eng.pdf
VPN(PPTP, L2TP, IPsec, GRE), SNMP; DDNS, DHCP, NAT/NAPT, Web, Auto-dial, always online, watch-dog, POE(Option);
Cellular/WAN RJ45/WiFi Client supports cold failover;
Option feature:
1) WiFi 802.11b/g/n (working as AP, Bridge Repeater, client)
2) GPS
3) Serial port for DTU feature (Serial to Cellular Gateway), RS232 or RS485 to select one
4) DC input 5V~50V (default is DC5V-40V)
5) dynamic route (D-route) for RIP, OSPF, BGP, Zebra
6) Internal battery 8000mAH (Model name is H700)

UMTS/HSPA/HSUPA/HSPA/HSPA+/DC-HSPA+ (WCDMA/FDD): 850/1900/2100 MHz, option for 850/900/1900/2100Mhz/1700Mhz/AWS;

3G TD-SCDMA: 2010~2025MHz/1880~1920MHz

 

Quad-band EGSM 850/900/1800/1900;

 

CDMA1x/EVDO: 800/1900Mhz, option for 450Mhz;

Cellular Band Supported.

4G FDD LTE:

Band 1–2100Mhz

Band 2–1900Mhz

Band 3–1800Mhz

Band 4—AWS(1700/2100Mhz)

Band 5–850Mhz

Band 7–2600MHz

Band 8–900Mhz

Band 12–700Mhz

Band 13–700(B13)Mhz

Band 17–700(B17)/AWS

Band 19—800Mhz

Band 20–DD800Mhz

Band 21

Band 25 –1900Mhz G Block

Band 28 – 700Mhz

Band 31– 450Mhz
Other FDD band…

4G TDD LTE (TD-LTE):

Band 41 – 2500/2600Mhz

Band 40 — 2300Mhz

Band 39 – 1900Mhz

Band 38 — 2600Mhz

Other TDD band…

Notes: 4G LTE is new. There are many different band and frequencies. Please confirm the detailed band and frequency with your carriers before order.

New 3G module MU509-65 for North America

Category : 其他, 技术相关

  • This year, Huawei lanuched a new module for 3G network in North America. Here is the details:
  • Because the 2G network shutdown in the North America ‎gradually. Huawei propose the more competitive solution “MU509-65” to follow the network development trade in North America. The MU509-65 with US region 3G Band support. But remove 2G band and available in LGA form factor. Meanwhile, MU509-65 also certificated with FCC/PTCRB/IC and AT&T TA.The industrial-grade M2M application of MU509-65 is widely. Such as POS, tracking , safety monitor and wearable medical device. And MU509-65 supports 3.6Mbps downlink data rate. Including enhanced features like FOTA,UDP/TCP/FTP/HTTP stack and Huawei enhanced AT commands.
  • All Huawei modules comply with the RoHS directive and Regional certification.
  • The MU509-65 is the HSDPA module based on Qualcomm chipset. Which is high-quality designed HSDPA module in small size and Huawei standard LGA form factor. The standard form factor design provided the easy way to migrate from MU509-c, MU709 or ME909 family.
  • Size
Height

30mm

Width

30mm

Depth

2.57mm

Weight

approx 5.5 g

  • Form Factor
145-pin LGA
  • Bands
MU509-65 LGA

WCDMA dual-band: 850/1900 MHz

  • Data Transfer Rate
HSDPA: DL 3.6 Mbps / UL: 384 kbps

WCDMA CS: DL 64 kbps / UL 64 kbps

WCDMA PS: DL 384 kbps / UL 384 kbps

  • Interface
Antenna interface

USB 2.0 Full Speed

Power supply

Analog Audio

UART

SIM Card (1.8V/3.0V)

Reset

Multiple GPIOs

  • Power Supply
3.2 V to 4.2 V (3.8 V recommended)
  • Temp Range
-40℃ to 85℃
  • Voice
PCM Voice

DTMF

  • Special Features
FOTA

Embedded UDP/TCP/FTP(s)/HTTP(s) stack

  • Operating System
Linux, Android,
  • Approvals
FCC

PTCRB

IC

AT&T Certification

RoHS & WEEE Compliant