eUICC
Terminal profile of phone
https://terminal-profile.osmocom.org/decode.php?tp=ffffffff7f9f00dfff03fe1fe21f7fe09fe90f000f00480001000000000800
https://terminal-profile.osmocom.org/
A very good reference point for network technology
http://blog.3g4g.co.uk/
SIM
http://resources.infosecinstitute.com/sim-card-forensics-introduction/
3G Communication
Fundamentals
Japan was the initiator of the 3G communication systems. Wideband CDMA proposed by NTTDoCoMo was a major improvement over the GSM system in terms of data delivery. The wireless market is driven by the huge growth of internet users. 3GPP - 3rd Generation Partnership Project, released R-99 in Dec 1999 which is the first release of WCDMA. 3G facilitates high speed data transfer. The 3G broadband is 5MHz bandwidth.
Some 3G protocols:
Universal Mobile Telecommunication Service (UMTS)
Wideband Code-Division Multiple Access (WCDMA)
High-Speed Downlink Packet Access (HSDPA)
Evolution Data Maximized (EVDO)
Spectrum allocation for WCDMA
Uplink - 1920M- 1980M
Downlink - 2110M-2170M
Channel
Dedicated pathway through a transmission medium for one user's information.
Claude Shannon - Mathematical theory of Communication.
Nicola Tesla - Developed Frequency Hopping Spread Spectrum around 1900
CHIP - Pulse of a direct-sequence spread spectrum code.
WCDMA Chip rate is 3.84 Mcps.
UTRAN - Universal Terrestrial Radio Access Network performs all the functions related to wireless communication.
Handover - shifting a mobile device's connection from one Node B to another.
WCDMA power control
Open loop power control - without feedback from NodeB
Closed loop power control - with feedback from NodeB
RF in communication
http://en.wikipedia.org/wiki/Radio_frequency
http://www.ni.com/white-paper/3541/en
http://docs.commscope.com/Public/about_rf_communications.pdf
http://www.ti.com/lit/ml/slap127/slap127.pdf
http://paginas.fe.up.pt/~mleitao/CMOV/Teoricas/CMOV_GSM.pdf
GSM Basics:
There are three subsystems in GSM network
It does call control, Initiation of paging- its the process of locating a particular mobile station in case of a mobile terminated call, and collection of charging data.
VLR:
It contains information about the subscribers like : Identification numbers, security information for authentication of the SIM and ciphering, and services the particular subscriber can use. This is a temporary database i.e, data is held only as long as the subscriber is in its sevice area. It contains address to every subscribers HLR.
HLR:
HLR maintains a permanent register of the subscribers. It also keeps track of the current location of its customers.
AC:
It does the verification of the SIM cards,
EIR:
EIR used for IMEI checking and contains three lists
It manages the radio network. One MSC contains several BSS. BSS covers large area consisting of several cells. BSS consists of the following:
This is the central network element of Base Station Subsystem. It controls the radio network. Main tasks of BSC are
Difference between CDMA and TDMA:
Imagine a room full of people, all trying to carry on one-on-one conversations. In TDMA each couple takes turns talking. They keep their turns short by saying only one sentence at a time. As there is never more than one person speaking in the room at any given moment, no one has to worry about being heard over the background din. In CDMA each couple talks at the same time, but they all use a different language. Because none of the listeners understand any language other than that of the individual to whom they are listening, the background din doesn't cause any real problem.
http://www.arcx.com/sites/cdmavstdma.htm
http://www.roggeweck.net/uploads/media/Student_-_Introduction_to_GSM.pdf
http://www.roggeweck.net/uploads/media/Student_-_GSM_Architecture.pdf
GSM
C and C++
ClearCase
Cloud Computing
Acronyms for easy reference
www.national.com/appinfo/adc/files/ABCs_of_ADCs.pdf
---------------------------------------------------------------------------------
AFC Adaptive frequency correction/automatic frequency correction
---------------------------------------------------------------------------------
ARFCN Absolute Radio Frequency Channel Number
http://www.aubraux.com/design/arfcn-calculator.php?sf=935&bw=200&co=&arfcn1=1&arfcn2=124&table
----------------------------------------------------------------------------------
AGCH-Access Grant Channel
http://www.mobile-phone-directory.org/Glossary/A/AGCH.html
----------------------------------------------------------------------------------
ASIC- Application Specific Integrated Circuit.
ASK-Amplitude Shift Keying
AMR-Adaptive Multi Rate.
ACELP- Algibraic Code Excited Linear Prediction
AMR-Adaptive Multirate
AEM-Application Enhanced Modem
AFS-AMR Full Rate Speech
AHS-AMR Half Rate Speech
ACS-Active Codec Set
API-Application Programming Interface
ASIC-Application Specific Integrated Circuits
ASSP-Application Specific Standard Products
AGC-Automatic Gain Control
BSC Base Station Controller
BTS Base Transceiver Station
BSS-Base Station Subsystem
BS-Base Station
BSIC-Base Station Identity Code.
BCC-Base Station Colour Code
BSF-Base Station Control Function
BLER-Block Error Ratio
BIST - Built In Self Test
C/I- Carrier to Interference Ratio
CAIT- CDMA Air Interface Tester
CSSR- Call Setup Success Rate
CLI-Command Line Interface
CMC-Codec Mode Command
CMI-Codec Mode Indication
CMR-Codec Mode Request
CCXO-Capacitor Controlled Crystal Oscillator
COT-Chip On Tape
CPS-Cellular Protocol Stack
CAT-Configurable Analogue Transistor
CRC - Cyclic Redundancy Check
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents; on retrieval the calculation is repeated, and corrective action can be taken against presumed data corruption if the check values do not match. - from Wikipedia
D
DCH Dedicated Channel
DSDS Dual SIM Dual Standby
DSP Digital Signal Processor
DCCH- Dedicated Control Channel
DCS- Digital Cellular System
DTX-Discontinuous Transmission
DRX-Discontinuous Reception
DECT-Digital Enhanced Cordless Telecommunication
DMT-Discrete Multitone Modulation
DUT-Device Under Test
DTM-Dual Transfer Mode
DTS-Darp Test Scenarios
DCR-Direct Conversion Radio Transceivers
DLL-Dynamic Linked Library
DSC-Digital Signal Controller
EIRP- Equivalent Isotropically Radiated Power
ESN-Electronic Serial Number
ESMR-Enhanced Specialised Mobile Radio
ETSI- European Telecommunications Standards Institute
EIR-Equipment Identity Register
EMMI- Electrical Man Machine Interface
EEP-Electrically Erasable Programmable Read Only Memory
EDR-Enhanced Data Rate
EC-Echo Canceller
ETM - Embedded Trace Macrocell
ETB- Embedded Trace Buffer
FAKEY-Fully Automated Key
FCB Frequency Correction Burst
FW Firmware
FM-Frequency Modulation
FDD-Frequency Division Duplex
FSPL-Free Space Path Loss
FDM-Frequency Division Multiplexing
FEM-Front End Module
FPGA-Field Programmable Gate Arrays
FFS-Flash File System
GPRS General Packet Radio Service
GGSN-Gateway GPRS Support Node
GMSK- Gaussian Minimum Shift Keying
GPS- Global Positioning System
GHOST- GSM hosted SMS Tele Service
GCAL- GSM Calibration Interface
GTI-Generic Test Interface
GIC- Generic Instrument Control
GPIO-General Purpose Input Outputs
GMTS-Generic Module Test System
GDD-Graphic Device Driver
GSI-GSM System Interface
GPIB-General Purpose Interface Bus
HW Hardware
HDML- Handheld Device Markup Language
HSCSD- High Speed Circuit Switched Data.
HLR- Home Location Register
HSN-Hopping Sequence Number
HCI- Host Controlled Interface
HID-Human Interface Devices
HFP-Hand-free Profile
iDEN-Integrated Digital Enhanced Network
IRDB-Intelligent Roaming DataBase
IMEI-International Mobile Equipment Identifier
IMSI-International Mobile Subscriber Identifier
ITU-International Telecommunication Union
ISR-Interrupt Service Routine
ICM-Initial Codec Mode
INL-Inline Mode
ICT-Information and Communication Technology
LAPD- Link Access Protocol on D Channel
LAPDm-Link Access Protocol on Dm Channel
LAI-Location Area Index
LAC-Location Area Code
LOS-Line Of Sight
LTE-Long Term Evolution
LLT-Low Level Trace
LAS-Logical Address Space
LMT-List Mode Test
LUXO-Linearisation Unit for Crystal Oscillator
LNA-Low Noise Amplifiers
LUT-Look Up Tables
LDAP-Lightweight Directory Access Protocol
MA-Mobile Allocation
MAIO-Mobile Allocation Index Offset
MCC-Mobile Country Code
MNC-Mobile Network Code
MSISDN-Mobile Subscriber ISDN Number
MS-Mobile Station
MOC-Mobile Originated Call
MTC-Mobile Terminated Call
MSC-Mobile Switching Center
MAC-Medium Access Control
MELM-Multi Evaluation List Mode
MI_DL-Mode Indication in Downlink Direction
MC_DL-Mode Command in Downlink Direction
MI_UL-Mode Indication in Uplink Direction
MR_UL-Mode Request in Uplink Direction
MOSFET-Metal Oxide Semiconductor Field Effect Transistor
NCELL Neighbor cell
NSS-Network Switching Subsystem
NCC-Network Colour Code
NMR-Network Measurement Reports
NVM-Non-Volatile Memory
NSR-Noise to Signal Ratio
NSTM-Non Signalling Test Mode
NR-Noise Reduction
OSS-Operations Support System/Operation Sub System
OFDM-Orthogonal Frequency Division Multiplexing
OHA-Open Handset alliance
OSF-Optimal Smartphone Framework
OnCE- On Chip Emulation
PLMN Public Land Mobile Network
PTM Packet Transfer Mode
PCM-Pulse Code Modulation
ppm-parts per million
PAN Personal Area Network
PCS- Personal Communication Services
PIN-Personal Identification Number
PDC-Personal Digital Cellular
PCH-Paging Channel
PSWR-Power Standing Wave Ratio.
PSK-Phase Shift Keying
PAM-Pulse Amplitude Modulation
PCM-Pulse Code Modulation
PDP-Packet Data Protocol
PDU-Protocol Data Units
PSTN-Public Switched Telephone Network
PIXIT-Protocol Implementation Extra Information Required For Testing
PCL-Power Control Level
PWM-Pulse Width Modulation
PMIC-Power Management Integrated Circuits
PRBS-Pseudo Random Binary Sequences
PoC-Push to talk over Cellular
PGA-Programmable Gain Amplifier
PMU-Power Management Unit
RF Radio Frequency
RRC Radio Resource Management Controller
RSSI-Received Signal Strength Indicator
In telecommunications, received signal strength indicator (RSSI) is a measurement of the power present in a received radio signal. - From Wikipedia
RLC-Radio Link Control
RLP-Radio Link Protocol
RATSCCH-Robust AMR Traffic Synchronised Control Channel
RoHS-Restriction of Hazardous Substances
RTL-Register Transfer Level
RSCP - Received signal code power
In the UMTS cellular communication system, received signal code power (RSCP) denotes the power measured by a receiver on a particular physical communication channel. It is used as an indication of signal strength, as a handover criterion, in downlink power control, and to calculate path loss. In CDMA systems, a physical channel corresponds to a particular spreading code, hence the name (Received signal code power). - From Wikipedia
SCELL Serving Cell
SDHB System Development Handbook
SI System Information
SIM Subscriber Identification Module
SDR- Software Defined Ratio
SDCCH-Stand Alone Dedicated Control Channel
SACCH-Slow Associated Control Channel
SMS-Short Message Service
SNR-Signal To Noise Ratio
SDK-Software Development Kit
SRAM-Static RAM
SIO-Serial Input Output
SB-Synchronisation Burst
SMD-Surface Mounted Devices
TCH-Traffic Channel
TA-Timing Advance
TCHf-Full rate Traffic Channel
TCHh-Half rate Traffic Channel
TDM-Time Division Multiplexing
3GPP- Third Generation Partnership Project
TSC-Training Sequence Code
UMTS-Universal Mobile Telecommunication System
UWB-Ultra Wide Band
UTRAN-Universal Terrestrial Radio Access Network
UTA-Universal Terminal API.
VLR-Visitor Location Register
VNA-Vector Network Analyser
VOBS- Versionised Object Spaces
http://www.mobiledia.com/glossary/27.html
Terminal profile of phone
https://terminal-profile.osmocom.org/decode.php?tp=ffffffff7f9f00dfff03fe1fe21f7fe09fe90f000f00480001000000000800
https://terminal-profile.osmocom.org/
A very good reference point for network technology
http://blog.3g4g.co.uk/
SIM
http://resources.infosecinstitute.com/sim-card-forensics-introduction/
3G Communication
Fundamentals
Japan was the initiator of the 3G communication systems. Wideband CDMA proposed by NTTDoCoMo was a major improvement over the GSM system in terms of data delivery. The wireless market is driven by the huge growth of internet users. 3GPP - 3rd Generation Partnership Project, released R-99 in Dec 1999 which is the first release of WCDMA. 3G facilitates high speed data transfer. The 3G broadband is 5MHz bandwidth.
Some 3G protocols:
Spectrum allocation for WCDMA
Uplink - 1920M- 1980M
Downlink - 2110M-2170M
Channel
Dedicated pathway through a transmission medium for one user's information.
Claude Shannon - Mathematical theory of Communication.
Nicola Tesla - Developed Frequency Hopping Spread Spectrum around 1900
CHIP - Pulse of a direct-sequence spread spectrum code.
WCDMA Chip rate is 3.84 Mcps.
UTRAN - Universal Terrestrial Radio Access Network performs all the functions related to wireless communication.
Handover - shifting a mobile device's connection from one Node B to another.
WCDMA power control
Open loop power control - without feedback from NodeB
Closed loop power control - with feedback from NodeB
RF in communication
Range : 3 kHz to 300 GHz
Basis of Radio Technology : A conductor is radiated off into space as electromagnetic wave by the energy of RF current.RF
is an alternating current which, if supplied to an antenna, will give rise to
an electromagnetic field that propagates through space.
In December 1901, Marconi performed his most prominent experiment, where he successfully transmitted Morse code from Cornwall, England, to St John’s, Canada.
Antenna
an antenna is designed to radiate radio energy into space and collect radio energy from space.an antenna is a pretty efficient device when compared to most other energy-emitting
things we know.
The most basic antenna we use in two-way base stations is the half-wave dipole radiator. The half-wave dipole is simply a straight conductor made of wire, rod, or tubing that, electrically,is one-half wavelength long.
To be in phase the cables don’t have to be the exact same length. They can be of different lengths but they must differ by multiples of a full wavelength
Gain is a measure of performance power.The reference we use in two-way base station antennas is the half-wave dipole and the unit of measure is the decibel.
http://en.wikipedia.org/wiki/Radio_frequency
http://www.ni.com/white-paper/3541/en
http://docs.commscope.com/Public/about_rf_communications.pdf
http://www.ti.com/lit/ml/slap127/slap127.pdf
http://paginas.fe.up.pt/~mleitao/CMOV/Teoricas/CMOV_GSM.pdf
GSM Basics:
GSM has revolutionised the telecommunication world. Fixed, wired telephones to mobile telephony is a paradigm shift that has changed our lives. For a user, the Mobile Station , which includes the mobile equipment (cell phone/mobile phone) and the SIM is the most familiar entity of the huge network lying behind a call or message, and SIM is the best-known database. A SIM, though tiny, has a lot of information stored in it. It identifies the user (assume it as an id card of the phone), it has a list of available networks, tools needed for authentication and ciphering and may contain memory space for storage eg, messages.
Below are few videos from YouTube which I find extremely helpful in understanding GSM.
There are three subsystems in GSM network
- NSS- Network Switching Subsystem
- BSS- Base Station Subsystem
- NMS-Network Management Subsystem
Network Switching Subsystem(NSS):
The main functions of NSS are:
- call control - subscriber identification, establishment of a call and disconnecting the network once call is over.
- charging/billing.
- location management - subscriber's location.
- subscriber data handling- HLR (permanent ) , VLR(temporary)
- MSC - Mobile Services Switching Center
- VLR - Visitor Location Register
- HLR - Home Location Register
- AC - Authentication Center
- EIR - Equipment Identification Register
It does call control, Initiation of paging- its the process of locating a particular mobile station in case of a mobile terminated call, and collection of charging data.
VLR:
It contains information about the subscribers like : Identification numbers, security information for authentication of the SIM and ciphering, and services the particular subscriber can use. This is a temporary database i.e, data is held only as long as the subscriber is in its sevice area. It contains address to every subscribers HLR.
HLR:
HLR maintains a permanent register of the subscribers. It also keeps track of the current location of its customers.
AC:
It does the verification of the SIM cards,
EIR:
- white list
- gray list
- black list
- BSC -Base Station Controller
- BTS- Base Transceiver Station
- TC-Transcoder.
- Radio Path Control - radio channel allocation and quality of Radio channel
- Synchronisation- MSC synchronises BSS and BSS synchronises BTS. BSC does the synchronisation inside BSS.
- Air and a-interface signalling
- Connection establishment between MS and NSS - signalling or traffic connection.
- Mobility management and speech transcoding.-
This is the central network element of Base Station Subsystem. It controls the radio network. Main tasks of BSC are
- Connection establishment between MS and NSS. All calls from MS are established through the group switch of BSC.
- Mobility management-It initiates majoirty of handovers.
- Statistical raw data collection- Informatin from BTS, transcoders and BSC are collected and forwarded via Data Communication Network to Network Management Subsystem.
- Air and A-interface signalling support.
- BTS and TC Control. BSC is capable of barring a BTS from the network and collecting alarm information. It also collects alarms related to transcoders.
Difference between CDMA and TDMA:
Imagine a room full of people, all trying to carry on one-on-one conversations. In TDMA each couple takes turns talking. They keep their turns short by saying only one sentence at a time. As there is never more than one person speaking in the room at any given moment, no one has to worry about being heard over the background din. In CDMA each couple talks at the same time, but they all use a different language. Because none of the listeners understand any language other than that of the individual to whom they are listening, the background din doesn't cause any real problem.
http://www.arcx.com/sites/cdmavstdma.htm
http://www.roggeweck.net/uploads/media/Student_-_Introduction_to_GSM.pdf
http://www.roggeweck.net/uploads/media/Student_-_GSM_Architecture.pdf
- http://www.radio-electronics.com/info/cellulartelecomms/gsm_technical/gsm_introduction.php
- http://www.gsmfordummies.com/
- http://ocw.mit.edu/courses/
- http://kldp.org/files/c+in+21+days.pdf
- http://t2.hhg.to/teach_yourself_cpp_in_21_days.pdf
- http://www.gimpel.com/html/pub/msg.txt
- http://techpubs.sgi.com/library/dynaweb_docs/0620/SGI_Developer/books/ClrC_CG/sgi_html/ch01.html
- http://techpubs.sgi.com/library/manuals/1000/007-1614-020/pdf/007-1614-020.pdf
- http://publib.boulder.ibm.com/infocenter/cchelp/v7r0m0/index.jsp?topic=/com.ibm.rational.clearcase.tutorial.doc/default_topic.htm
- http://www.yolinux.com/TUTORIALS/ClearcaseCommands.html
- A
www.national.com/appinfo/adc/files/ABCs_of_ADCs.pdf
---------------------------------------------------------------------------------
AFC Adaptive frequency correction/automatic frequency correction
---------------------------------------------------------------------------------
ARFCN Absolute Radio Frequency Channel Number
http://www.aubraux.com/design/arfcn-calculator.php?sf=935&bw=200&co=&arfcn1=1&arfcn2=124&table
----------------------------------------------------------------------------------
AGCH-Access Grant Channel
http://www.mobile-phone-directory.org/Glossary/A/AGCH.html
----------------------------------------------------------------------------------
ASIC- Application Specific Integrated Circuit.
ASK-Amplitude Shift Keying
AMR-Adaptive Multi Rate.
ACELP- Algibraic Code Excited Linear Prediction
AMR-Adaptive Multirate
AEM-Application Enhanced Modem
AFS-AMR Full Rate Speech
AHS-AMR Half Rate Speech
ACS-Active Codec Set
API-Application Programming Interface
ASIC-Application Specific Integrated Circuits
ASSP-Application Specific Standard Products
AGC-Automatic Gain Control
- B
BSC Base Station Controller
BTS Base Transceiver Station
BSS-Base Station Subsystem
BS-Base Station
BSIC-Base Station Identity Code.
BCC-Base Station Colour Code
BSF-Base Station Control Function
BLER-Block Error Ratio
BIST - Built In Self Test
- C
C/I- Carrier to Interference Ratio
CAIT- CDMA Air Interface Tester
CSSR- Call Setup Success Rate
CLI-Command Line Interface
CMC-Codec Mode Command
CMI-Codec Mode Indication
CMR-Codec Mode Request
CCXO-Capacitor Controlled Crystal Oscillator
COT-Chip On Tape
CPS-Cellular Protocol Stack
CAT-Configurable Analogue Transistor
CRC - Cyclic Redundancy Check
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents; on retrieval the calculation is repeated, and corrective action can be taken against presumed data corruption if the check values do not match. - from Wikipedia
D
DCH Dedicated Channel
DSDS Dual SIM Dual Standby
DSP Digital Signal Processor
DCCH- Dedicated Control Channel
DCS- Digital Cellular System
DTX-Discontinuous Transmission
DRX-Discontinuous Reception
DECT-Digital Enhanced Cordless Telecommunication
DMT-Discrete Multitone Modulation
DUT-Device Under Test
DTM-Dual Transfer Mode
DTS-Darp Test Scenarios
DCR-Direct Conversion Radio Transceivers
DLL-Dynamic Linked Library
DSC-Digital Signal Controller
- E
EIRP- Equivalent Isotropically Radiated Power
ESN-Electronic Serial Number
ESMR-Enhanced Specialised Mobile Radio
ETSI- European Telecommunications Standards Institute
EIR-Equipment Identity Register
EMMI- Electrical Man Machine Interface
EEP-Electrically Erasable Programmable Read Only Memory
EDR-Enhanced Data Rate
EC-Echo Canceller
ETM - Embedded Trace Macrocell
ETB- Embedded Trace Buffer
- F
FAKEY-Fully Automated Key
FCB Frequency Correction Burst
FW Firmware
FM-Frequency Modulation
FDD-Frequency Division Duplex
FSPL-Free Space Path Loss
FDM-Frequency Division Multiplexing
FEM-Front End Module
FPGA-Field Programmable Gate Arrays
FFS-Flash File System
- G
GPRS General Packet Radio Service
GGSN-Gateway GPRS Support Node
GMSK- Gaussian Minimum Shift Keying
GPS- Global Positioning System
GHOST- GSM hosted SMS Tele Service
GCAL- GSM Calibration Interface
GTI-Generic Test Interface
GIC- Generic Instrument Control
GPIO-General Purpose Input Outputs
GMTS-Generic Module Test System
GDD-Graphic Device Driver
GSI-GSM System Interface
GPIB-General Purpose Interface Bus
- H
HW Hardware
HDML- Handheld Device Markup Language
HSCSD- High Speed Circuit Switched Data.
HLR- Home Location Register
HSN-Hopping Sequence Number
HCI- Host Controlled Interface
HID-Human Interface Devices
HFP-Hand-free Profile
- I
iDEN-Integrated Digital Enhanced Network
IRDB-Intelligent Roaming DataBase
IMEI-International Mobile Equipment Identifier
IMSI-International Mobile Subscriber Identifier
ITU-International Telecommunication Union
ISR-Interrupt Service Routine
ICM-Initial Codec Mode
INL-Inline Mode
ICT-Information and Communication Technology
- J
- K
- L
LAPD- Link Access Protocol on D Channel
LAPDm-Link Access Protocol on Dm Channel
LAI-Location Area Index
LAC-Location Area Code
LOS-Line Of Sight
LTE-Long Term Evolution
LLT-Low Level Trace
LAS-Logical Address Space
LMT-List Mode Test
LUXO-Linearisation Unit for Crystal Oscillator
LNA-Low Noise Amplifiers
LUT-Look Up Tables
LDAP-Lightweight Directory Access Protocol
- M
MA-Mobile Allocation
MAIO-Mobile Allocation Index Offset
MCC-Mobile Country Code
MNC-Mobile Network Code
MSISDN-Mobile Subscriber ISDN Number
MS-Mobile Station
MOC-Mobile Originated Call
MTC-Mobile Terminated Call
MSC-Mobile Switching Center
MAC-Medium Access Control
MELM-Multi Evaluation List Mode
MI_DL-Mode Indication in Downlink Direction
MC_DL-Mode Command in Downlink Direction
MI_UL-Mode Indication in Uplink Direction
MR_UL-Mode Request in Uplink Direction
MOSFET-Metal Oxide Semiconductor Field Effect Transistor
- N
NCELL Neighbor cell
NSS-Network Switching Subsystem
NCC-Network Colour Code
NMR-Network Measurement Reports
NVM-Non-Volatile Memory
NSR-Noise to Signal Ratio
NSTM-Non Signalling Test Mode
NR-Noise Reduction
- O
OSS-Operations Support System/Operation Sub System
OFDM-Orthogonal Frequency Division Multiplexing
OHA-Open Handset alliance
OSF-Optimal Smartphone Framework
OnCE- On Chip Emulation
- P
PLMN Public Land Mobile Network
PTM Packet Transfer Mode
PCM-Pulse Code Modulation
ppm-parts per million
PAN Personal Area Network
PCS- Personal Communication Services
PIN-Personal Identification Number
PDC-Personal Digital Cellular
PCH-Paging Channel
PSWR-Power Standing Wave Ratio.
PSK-Phase Shift Keying
PAM-Pulse Amplitude Modulation
PCM-Pulse Code Modulation
PDP-Packet Data Protocol
PDU-Protocol Data Units
PSTN-Public Switched Telephone Network
PIXIT-Protocol Implementation Extra Information Required For Testing
PCL-Power Control Level
PWM-Pulse Width Modulation
PMIC-Power Management Integrated Circuits
PRBS-Pseudo Random Binary Sequences
PoC-Push to talk over Cellular
PGA-Programmable Gain Amplifier
PMU-Power Management Unit
- Q
- R
RF Radio Frequency
RRC Radio Resource Management Controller
RSSI-Received Signal Strength Indicator
In telecommunications, received signal strength indicator (RSSI) is a measurement of the power present in a received radio signal. - From Wikipedia
RLC-Radio Link Control
RLP-Radio Link Protocol
RATSCCH-Robust AMR Traffic Synchronised Control Channel
RoHS-Restriction of Hazardous Substances
RTL-Register Transfer Level
RSCP - Received signal code power
In the UMTS cellular communication system, received signal code power (RSCP) denotes the power measured by a receiver on a particular physical communication channel. It is used as an indication of signal strength, as a handover criterion, in downlink power control, and to calculate path loss. In CDMA systems, a physical channel corresponds to a particular spreading code, hence the name (Received signal code power). - From Wikipedia
- S
SCELL Serving Cell
SDHB System Development Handbook
SI System Information
SIM Subscriber Identification Module
SDR- Software Defined Ratio
SDCCH-Stand Alone Dedicated Control Channel
SACCH-Slow Associated Control Channel
SMS-Short Message Service
SNR-Signal To Noise Ratio
SDK-Software Development Kit
SRAM-Static RAM
SIO-Serial Input Output
SB-Synchronisation Burst
SMD-Surface Mounted Devices
- T
TCH-Traffic Channel
TA-Timing Advance
TCHf-Full rate Traffic Channel
TCHh-Half rate Traffic Channel
TDM-Time Division Multiplexing
3GPP- Third Generation Partnership Project
TSC-Training Sequence Code
- U
UMTS-Universal Mobile Telecommunication System
UWB-Ultra Wide Band
UTRAN-Universal Terrestrial Radio Access Network
UTA-Universal Terminal API.
- V
VLR-Visitor Location Register
VNA-Vector Network Analyser
VOBS- Versionised Object Spaces
- W
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