Category Archives: Freebies

Best Free Resources To Learn 3GPP LTE

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Either you are a 3G, LTE or LTE Advanced developer or a tester you will definitely love to have these free study materials and Webcast CDs from Agilent. If you do not know about Agilent, it is one of the biggest wireless test equipments manufacturer in the world.

Agilent is specialized in range of products staring from Oscilloscopes, Protocol Analyzers, Network Analyzers, Bit Error Ratio Test Solutions, EMI/EMC, Phase Noise, Physical Layer Test Systems and many other important test and debugging products.

This free study materials from Agilet includes

Posters on Mobile Computing Interfaces Architecture, Evolving Wireless Standards, Understanding the Intricacies of LTE, Ten Things You Should Know About MIMO.

Best Free Resources To Learn 3GPP LTE (Long Term Evolution)

Free LTE Webcast CDs of

  • LTE Design & Test Fundamentals Volume 1
    • Addressing the Design & Verification Challenges of 3GPP LTE
    • Understanding SC-FDMA – The New LTE Uplink
    • LTE Protocol Primer • RF Measurements for LTE
    • LTE Protocol Control and Signaling
  • LTE Design & Test Fundamentals Volume 2
    • Ten Things You Should Know about MIMO
    • MIMO RF Measurements – Choosing and Using Tools
    • Taking LTE MIMO from Standards to Starbucks
    • LTE MIMO System Level Design and Test
    • Making the Journey from WiMAX to LTE
    • Addressing the Design and Verification Challenges of Cognitive Radio and SDR
    • Introduction to LTE Advanced
  • LTE Design & Test Fundamentals Volume 3
    • Completing LTE eNB Closed-loop Conformance Tests
    • Over-The-Air (OTA) Test Methods to Evaluate the Performance of MIMO Handsets
    • How to Verify the Data in Your LTE Downlink Signal
    • 4G For Everyone: Extended RF Performance with Digital Pre-Distortion
    • Understanding Cross Modulation Effects in a Full Duplex LTE

Apart from that you can download App notes, Brochure and Software

  • MIMO in LTE Operation and Measurement–Excerpts on LTE Test
  • MIMO Performance and Condition Number in LTE Test
  • Measuring ACLR Performance in LTE Transmitters
  • Stimulus-Response Testing for LTE Components
  • Greater Insight into LTE Design and Test
  • Move Forward to What’s Possible in TD-LTE Design & Test Solutions
  • 89600 VSA Software Trial CD
  • Signal Studio Software Trial CD

Agilent gives two options for you to get these. Either you can download or Agilent will ship all these study materials to you without any charge.

Check the below link to download or order these useful LTE resources.

https://www.home.agilent.com/agilent/editorial.jspx?cc=AD&lc=eng&ckey=1326831-1-eng&nid=-33796.0.00&id=1326831-1-eng

Google + Invites Giveaway

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I’d love to invite the everyone into Google+, and think I have a way. But, please, follow these rules and you will get a invite soon. This is exclusively for 3gLteInfo community.

  • Go to the 3glteinfo Facebook Page
  • Provide your mail id in the Google+ Invite Thread.
  • After you get a mail from us just check the mail and it has a link which says “Learn More About Google+”. Now you are in Google+. Register Yourselves.

RRC Measurements Cheat Sheet

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RRC Measurements Cheat Sheet (FDD) is a one page help guide. Cheat sheets are useful when debugging an issue or testing a test cases and you just need a quick look instead of going into the specification.

In this document we have recorded all the RRC measurements and the meaning of those events. Please let us know what you think about this.

If you have similar help sheet/cheat sheet which you have created and you want to share please send to us (contact@3glteinfo.com). We will publish those through 3glteinfo.

Download Here

Rohde & Schwarz LTE Basics Webinar (FDD and TDD)

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This is the Rohde & Schwarz LTE (E-UTRA) webinar. In this webinar basics of LTE technology are explained.

Motivation for LTE

  • LTE market situation
  • LTE background study
  • Requirements in LTE
  • Evolution of LTE

LTE Technology Basics & OFDMA

  • LTE key parameters
  • LTE frequency bands
  • What is OFDMA
  • Difference between OFDM and OFDMA
  • OFDM time-frequency multiplexing
  • LTE frame structure 1 and 2

Instruction to SC-FDMA in Uplink

  • How to generate SC-FDMA
  • SC-FDMA peak to average power ratio.
  • SC-FDMA parametrization

LTE (E-UTRA) Network and Protocol Architecture

  • LTE/SAE network architecture
  • User plane and Control plane protocols
  • Mapping between logical channel and transport channel
  • UE categories
  • Radio Procedures
  • Mapping between logical channel and transport channel
  • UE categories

Radio Procedures

  • Cell Search & cell selection procedure
  • Downlink physical channels and signals
  • Primary Synchronization Signal
  • Secondary Synchronization Signal
  • Downlink reference signals
  • Master information block
  • System Information block
  • Random access procedure
  • Hybrid ARQ
  • Bearer setup

Uplink Physical Channels and Signals

  • Uplink Frequency hopping
  • Demodulation Reference Signal in uplink
  • Sounding Reference Signal in uplink
  • PUSCH power control & timing relation
  • Physical uplink control channel (PUCCH)

LTE Mobility Procedures & MIMO

  • Handover (Intra-MME/Serving Gateway)
  • LTE Internetworking with 2G/3G
  • LTE Internetworking with CDMA2000
  • Downlink Transmit Diversity
  • Downlink spatial diversity

LTE Resources: Free System Posters

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It is always good to have some technology resources. The best way to learn a new technology is to look the overall architecture first, like the end to end communication interfaces, protocols involved, radio interface technology involved, etc. After knowing the overall system architecture one can start going into details of system nodes.

LTE is the latest technology to look into. So these are some of the most useful resources to start learning about LTE. All these posters are free, so you do not have to pay anything.

Free PDF Posters

LTE Poster from Alcatel Lucent

Alcatel Lucent are one of the top network solution provider. The LTE poster from Alcatel Lucent provides some details about bearer architecture, LTE security system, inter-networking of LTE with other 3GPP (UMTS and GSM) and non-3GPP systems. It also provides some basic information about different important nodes in the LTE systems like UE, eNodeB, Serving Gateway(S-GW), Home Subscriber Server (HSS), PDN Gateway (P-GW), etc.

Download LTE Poster from Alcatel Lucent here:

http://www-lte.alcatel-lucent.com/locale/en_us/downloads/LTE_poster.pdf

LTE Poster from Nethawk

Nethawk is a simulator and analyzer company. The system poster from nethawk shows all the nodes in the system (LTE, UTRAN, GSM, Femtocell, PSTN network, CoreNetwork). It also gives the names of the protocols on different interfaces.

Download System Poster from Nethawk here:

https://www.nethawk.fi/services/image_bank/playground_pictures/EXFO-NetHawk-Reference-Poster.pdf

Free Posters (Printed Copy)

Apart from soft copies of the poster it is sometimes good to put a poster on a wall or in your cubicle to use to when required. Anristu and Agilant both are providing free Printed copies of LTE poster. Check the links below to order your copies.

https://www.anritsu.com/en-GB/Promotions/LTE-poster/registration.aspx

https://www.home.agilent.com/agilent/editorial.jspx?cc=AD&lc=eng&ckey=1326831-1-eng&nid=-11143.0.00&id=1326831-1-eng&pselect=SR.GENERAL

3GPP Message Decoder

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3GPP message decoder is a very simple but powerful tool to decode GSM, UMTS, LTE, IP messages. This is developed by protocolanalyze. 3GPP decoder is a simple application using Wireshark to decode messages.

3GPP Message Decoder has a very simple interface.

Message Decoder extended

The user interface has the following sections:

  • Enter the HEX message to decode in the top text area.
  • You can choose between GSM, WCDMA, LTE or IP Protocol.
  • Use the dropdown to select between different message types to select.
  • The decode button.
  • Decoded message window

Mesage Type to Select

Message Type Supported

3GPP Message Decoder supports the following message types.

GSM

  • GAN TCP
  • GAN UDP
  • GSM CCCH
  • GSM SACCH
  • LLC
  • NAS
  • SNDCP
  • SNDCPXID

UMTS

  • NAS
  • RRC BCCH.BCH
  • RRC BCCH.FACH
  • RRC DL.CCCH
  • RRC DL.DCCH
  • RRC DL.SHCCH
  • RRC MCCH
  • RRC MSCH
  • RRC PCCH
  • RRC UL.CCCH
  • RRC UL.DCCH
  • RRC UL.SHCCH
  • RRC SIs (SIBs and MIB)

LTE

  • RRC BCCH.BCH
  • RRC BCCH.DL.SCH
  • RRC DL.CCCH
  • RRC DL.DCCH
  • RRC PCCH
  • RRC UL.CCCH
  • RRC UL.DCCH
  • NAS EPS

IP Protocols

  • ICMP
  • IP
  • RTSP
  • RTP
  • UDP

Decoding Message

After entering a correct hex string and choosing the appropriate option press the decode button to decode the message. You can copy (Ctrl A and Ctrl C) and paste (Ctrl V) the output result from the output window to a notepad or word processor.
decoded

Download 3GPP Message Decoder

Download 3GPP Message Decoder from the following link:

Download 3GPP Decoder

UMTS Radio Link Protocol Decoder

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What is UMTS-RLCDecoder?

UMTS-RLCDecoder is small but powerful tool for decoding RLC header information both for Acknowledged Mode RLC PDUs and Unacknowledged Mode RLC PDUs.

RLC Unacknowledged Mode (UM) PDU Decoding

UMTS-RLCDecoder can decode:

  • UMD RLC Header information
    • UMD PDU Sequence Number
    • Extension bit
  • Length Indicator Decoding

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RLC Acknowledged Mode (AM) PDU Decoding

UMTS-RLCDecoder can decode the RLC Acknowledged Mode Data (AMD) PDUs and Control PDUs.

  • AMD PDU Header Decoding
    • D/C Field
    • Sequence Number
    • Polling
    • Header Extension
  • Length Indicator Decoding

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Control PDUs

  • Status PDUs
    • SUFI NO_MORE
    • SUFI ACK
    • SUFI LIST
    • SUFI RLIST
  • Reset and Reset-Ack PDUs

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Download

 

UMTS-RLCDecoder