Functional Modules - Huawei E173 Product Description

4.2 Functional Modules

Radio Frequency Module
It sends/receives radio signals and modulates/demodulates the radio frequency (RF)
signals and baseband signals.
Baseband Signal Processing
It implements the digital processing of HSUPA/HSDPA/WCDMA/EDGE/GPRS/GSM
baseband signals, including:
Bottom Layer Driver
The bottom layer drivers include drivers of the radio frequency (RF) module, FLASH,
and all the peripherals such as the SIM card, USB device, NDIS device. The USB
device driver is the bottom layer software at the PC side. It is used to implement
functions such as the interaction between the background software and the SIM card,
auto-setup, and NDIS driving.
Platform Service Subsystem
It initializes programs, diagnoses, downloads data and serves as a watchdog.
Protocol Stack System
It processes the HSUPA /HSDPA/UMTS/EDGE/GPRS/GSM Layer 2 and Layer 3
protocols.
Application System
It sends laptop commands to the bottom layer protocol for processing and returns the
value to the laptop.
Existing applications include the following:
User Interface
It provides interfaces to connect peripherals. Interfaces are for Micro SD, USB
interface, LED and SIM/USIM.
Application Management
It includes management of the following dashboards:
Issue 01 (2010-03-10)
Modulating/Demodulating WCDMA/HSDPA/HSUPA baseband signals
Modulating/Demodulating GSM/GPRS/EDGE baseband signals
Encoding/Decoding WCDMA/HSDPA/HSUPA channels
Encoding/Decoding GSM/GPRS/EDGE channels
Call management
Message management
CS/PS domain service management
Testing dashboard
Commercial in Confidence
HUAWEI E173 HSPA USB Stick V100R001
Product Description
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