The Meizo R66 series industrial 3G router is used to provide fast and stable internet service in PLCs and other M2M applications. The router CPU is using Broadcom chipset, integrated with industrial grade 3G modem, offering WAN, LAN, SIM, VPN, VRRP, WiFi, and Serial port services, product line supporting the following radio access technologies: HSPA+, HSPA, UMTS, EDGE, GPRS . By owning automatic connection monitoring and heartbeat detection, make sure the router to be always online.
The 4G rugged router is using Industrial Grade equipment design standards, passed CE, FCC and EMC test, stable and reliable. Multiple VPN encryption protocols as L2TP, IPSec, PPTP and GRE are owned, making it ideal solution for applications in which high data bandwidth and strong stability is required.
Main Features |
Hardware Specifications |
Software Functions |
● Support public and private APN network |
CPU |
VPN |
UMTS Tutorial
Introduction
This tutorial on UMTS covers UMTS overview,UMTS Releases, UMTS frequency bands,UARFCN,UMTS multiple access,UMTS frame structure, UMTS network architecture, UMTS channel types(logical,transport,physical channels), mapping between channels,spreading,scrambling and modulation.
This tutorial covers following in addition to overview and UMTS releases outlined here:
UMTS Overview
UMTS stands for Universal Mobile Telecommunications System. It came into existence from GSM technology developed by 3GPP. UMTS network composed of three main parts UE (User Equipment), Radio Access Network (RAN) and Core Network. UMTS is released in several phases by 3GPP standard body as shown below. UMTS is also referred by 3G. The main features of 3G standardization by ITU includes support for circuit and packet switching, support for both voice and data applications, support for seamless mobility for both voice and data, improvement in spectral efficiency, legacy support for GSM/GPRS systems, increase in voice quality, low round trip packet delay and more.
UMTS Releases
Following table mentions UMTS releases with features
Release |
Feature introduced |
R99 |
WCDMA air interface introduced in UMTS |
R4 |
IPMS (IP Multimedia Service) introduced on network side |
R5 |
HSDPA |
R6 |
HSUPA + Fractional DPCH |
R7 |
HSPA, MIMO, higher modulation scheme 64QAM, continuous packet connectivity and Flexible RLC |
R8 |
LTE, Dual cell HSDPA |
R9 |
DC HSUPA |
R10 |
LTE Advanced, Multi cell HSDPA |
R11 |
8 carrier HSDPA |
Model |
Frequency & Band |
Bandwidth(UL/DL) |
Consumption |
WiFi (-W) |
Serial(-S) |
Power |
R66(Europe & China network) |
● UMTS/HSPA+ 2100/900 MHz |
5.76Mbps/21Mbps |
Work:0.23A@12V DC |
802.11n 300Mbps Option |
RS232/RS485 Option |
US/EU standard Option |
R66A(Asia pacific, Latin America) |
● UMTS/HSPA+ 2100/1900/850 MHz |
5.76Mbps/21Mbps |
Work:0.23A@12V DC |
UMTS Network Architecture
As shown in the figure there are three main components in UMTS network architecture, User Equipments is composed of Mobile Equipment (ME) and USIM. Radio Access Network is composed of NodeB and RNC. Core Network is composed of circuit switched and packet switched functional modules. For Circuit switched (CS) operations MSC and GMSC along with database modules such as VLR, HLR will be available. For packet switched (PS) operations SGSN and GGSN will serve the purpose. GMSC will be connected with PSTN/ISDN in CS case. GGSN is connected with Packet data Network (PDN) for PS case. Interfaces between these entities are summarized below.
Uu interface between UE and NodeB
Iub interface between NodeB and RNC
Iur interface between RNC and RNC
Iu-CS interface between RNC and MSC
Iu-PS interface between RNC and SGSN