long term evolution (lte) tutorials
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Long Term Evolution (LTE) Tutorials
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Long Term Evolution (LTE) Tutorials
Long Term Evolution Presentations with AudioRohde & Schw arz 's presentations provide an excellent introduction to LTE. The presentations are accompanied with an audio narration. The topics covered are:
LTE In t roduct ion
Motivations for LTE
LTE market and background
Requirements
LTE Techno logy Basics I , I I and I I I
Parameters and frequency bands
OFDM and OFDMA
Downlink and frame structure
SC-FDMA and PAPR
LTE/SAE Network architectureUser plane control and user plane
Channel Mapping
UE categories
LTE Rad io Procedures I
Initial Access and Cell Search
Downlink signals
System Information
Random Access Procedures
PDCCH and Hybrid ARQ
EPS Bearer setup
LTE Rad io Procedures I I
Uplink Scheduling and Frequency Hopping
PUSCH and PUCCHLTE Rad io Procedures I I I
Mobility Procedures
MIMO
Downlink transmit chain and MIMO
Uplink MIMO
READ
Voice over LTE via Generic Access (VoLGA) Whitepaper
http://www.eventhelix.com/http://www.eventhelix.com/EventStudio/http://www.eventhelix.com/VisualEtherhttp://www.eventhelix.com/RealtimeMantrahttp://www.eventhelix.com/contact_us.htmhttp://www.eventhelix.com/default.htmhttp://www.eventhelix.com/RealtimeMantrahttp://www.eventhelix.com/lte/tutorial/web-presentation.htmhttp://www.eventhelix.com/lte/tutorial/web-presentation.htmhttp://www.eventhelix.com/RealtimeMantrahttp://www.eventhelix.com/default.htmhttp://www.eventhelix.com/contact_us.htmhttp://www.eventhelix.com/RealtimeMantrahttp://www.eventhelix.com/VisualEtherhttp://www.eventhelix.com/EventStudio/http://www.eventhelix.com/http://www.eventhelix.com/ -
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Excerpt from the paper: "Voice over LTE via Generic Access Network, or VoLGA for short, which is defined by the
VoLGA forum2. Here, the concept is to connect the already existing Mobile Switching Centers to the LTE network via a
gateway. As no fallback to a legacy network is required, call setup times are not increased and the user's quality of
experience is consistent with that of the 2G or 3G voice environment.
VoLGA is based on the existing 3GPP Generic Access Network (GAN) standard, which is deployed for example by T-
Mobile in the US and Orange in France. The purpose of GAN is to extend mobile services over a generic IP access
network. One of the popular applications of GAN is with Wi-Fi-enabled phones. With GAN-based dual-mode mobile
phones, all services are either available over their GSM networks as usual, or over Wi-Fi at home or in public places.
Moving between the two network technologies is fully transparent to the user."
READ
Long Term Evolution (LTE): an introduction
http://cm-networks.de/volga-a-whitepaper.pdfhttp://cm-networks.de/volga-a-whitepaper.pdfhttp://cm-networks.de/volga-a-whitepaper.pdf -
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This paper from Er icsson covers the following topics:
A projection of future growth in wireless broadband
LTE architectureA brief introduction to OFDM and SC-FDMA
READ
LTE: The Evolution of Mobile Broadband
http://www.ericsson.com/res/docs/whitepapers/lte_overview.pdfhttp://www.ericsson.com/res/docs/whitepapers/lte_overview.pdfhttp://www.ericsson.com/res/docs/whitepapers/lte_overview.pdf -
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This article provides an overview of the LTE radio interface, recently approved by the 3GPP, together with a more in-
depth description of its features such as spectrum flexibility, multi-antenna transmission, and inter-cell interference
control. The performance of LTE and some of its key features is illustrated with simulation results. The article is
concluded with an outlook into the future evolution of LTE.
READ
LTE Link Layer Design
http://www.ericsson.com/res/thecompany/docs/journal_conference_papers/atsp/lte_the_evolution_of_mobile_broadband.pdfhttp://www.ericsson.com/res/thecompany/docs/journal_conference_papers/atsp/lte_the_evolution_of_mobile_broadband.pdfhttp://www.ericsson.com/res/thecompany/docs/journal_conference_papers/atsp/lte_the_evolution_of_mobile_broadband.pdf -
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The LTE radio interface for 3GPP Release 8 was specified recently. This article describes the LTE link-layer protocols,
which abstract the physical layer and adapt its characteristics to match the requirements of higher layer protocols.The
LTE link-layer protocols are optimized for low delay and low overhead and are simpler than their counterparts in
UTRAN. The state -of-the-art LTE protocol design is the result of a careful crosslayer approach where the protocols
interact with each other efficiently. This article provides a thorough overview of this protocol stack, including the sub-
layers and corresponding interactions in between them, in a manner that is more intuitive than in the respective 3GPP
specifications.
READ
EURASIP Journal on Wireless Communications and Networking:
Special Issue on LTE and LTE Advanced
http://www.ericsson.com/res/thecompany/docs/journal_conference_papers/wireless_access/IEEE-Com-Mag-April-2009-LTE-SAE-Rel-8-link-layer-design.pdfhttp://www.hindawi.com/journals/wcn/2009/si.7.htmlhttp://www.ericsson.com/res/thecompany/docs/journal_conference_papers/wireless_access/IEEE-Com-Mag-April-2009-LTE-SAE-Rel-8-link-layer-design.pdfhttp://www.ericsson.com/res/thecompany/docs/journal_conference_papers/wireless_access/IEEE-Com-Mag-April-2009-LTE-SAE-Rel-8-link-layer-design.pdf -
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The special issue on LTE and LTE advanced contains articles covering the following topics:
LTE and LTE Advanced MIMO
Downlink scheduling of multiclass Traffic
Diversity techniques for Single Carrier Packet Retransmission
Note : The website also contains a link for downloading the PDF containing the entire special issue.
READ
Overview of 3GPP Long Term Evolution Physical Layer
This article from Freesca le provides an excellent introduction to the LTE physical layer. The topics covered are:
LTE basic concepts and an introduction to OFDM
Multiple Input Multiple Output (MIMO)
Maximal Ratio Combining (MRC)
SC-FDMA
LTE generic frame structureLTE physical channels
Downlink and Uplink Transport channels
READ
Long Term Evolution Protocol Stack Overview
http://www.hindawi.com/journals/wcn/2009/si.7.htmlhttp://www.freescale.com/files/wireless_comm/doc/white_paper/3GPPEVOLUTIONWP.pdfhttp://www.freescale.com/files/wireless_comm/doc/white_paper/3GPPEVOLUTIONWP.pdfhttp://www.freescale.com/files/wireless_comm/doc/white_paper/3GPPEVOLUTIONWP.pdfhttp://www.hindawi.com/journals/wcn/2009/si.7.html -
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This paper provides an introduction to how the LTE protocol stack operates. Because the final 3GPP specification will cover
tens of thousands of pages, this paper touches only on the highest levels of protocol operation. The paper discusses the
history and application requirements that determine the functions and priorities of LTE, examines the protocol stack in terms
of the time domain and in terms of information moving through the stack, and finally discusses more specialized aspects of
the standard such as scheduling and quality of service, management and control functions, handovers and power save
operation.
READ
Proof of Concept Implementation of Long Term Evolution (Thesis)
Thesis covers a proof of concept LTE system. User plane handling is covered in detail. The following topics are covered:
Introduction to LTE
OFDM and SC-FDMA
RLC/MAC, PDCP and RRC
S1 Interface
LTE Prototype
System architecture and implementation concepts.
READ
Key Features of the LTE Radio Interface
http://www.freescale.com/files/wireless_comm/doc/white_paper/LTEPTCLOVWWP.pdfhttp://epubl.ltu.se/1402-1617/2007/246/LTU-EX-07246-SE.pdfhttp://epubl.ltu.se/1402-1617/2007/246/LTU-EX-07246-SE.pdfhttp://www.freescale.com/files/wireless_comm/doc/white_paper/LTEPTCLOVWWP.pdfhttp://www.freescale.com/files/wireless_comm/doc/white_paper/LTEPTCLOVWWP.pdfhttp://www.freescale.com/files/wireless_comm/doc/white_paper/LTEPTCLOVWWP.pdf -
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This article from Er icsson presents some of the key features of the radio interface for LTE (long-term evolution), recently approved by 3GPP. LTE enables
unprecedented performance in terms of peak data rates, delay, and spectrum efficiency.
The authors discuss spectrum flexibility, multi-antenna technologies, scheduling, link adaptation, power control, and retransmission handling.
READ
Spectrum Analysis for Future LTE Deployments
This article from Motoro la talks about current and future spectrum allocations for LTE.
http://www.ericsson.com/ericsson/corpinfo/publications/review/2008_02/files/6_LTE.pdfhttp://business.motorola.com/experiencelte/pdf/LTESpectrumAnalysisWhitePaper.pdfhttp://www.ericsson.com/ericsson/corpinfo/publications/review/2008_02/files/6_LTE.pdfhttp://www.ericsson.com/ericsson/corpinfo/publications/review/2008_02/files/6_LTE.pdf -
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Potential redeployment of GSM and other legacy services are also covered.
READ
Long Term Evolution (LTE): Overview of LTE Air-Interface Technical White Paper
Motoro la gives an overview of the LTE air interface in this article. The main areas covered are:
LTE performance requirements
Downlink and uplink control channels
Simulation results and capacity
READ
Long Term Evolution (LTE): A Technical Overview
http://business.motorola.com/experiencelte/pdf/LTESpectrumAnalysisWhitePaper.pdfhttp://business.motorola.com/experiencelte/pdf/LTEAirInterfaceWhitePaper.pdfhttp://business.motorola.com/experiencelte/pdf/LTEAirInterfaceWhitePaper.pdfhttp://business.motorola.com/experiencelte/pdf/LTEAirInterfaceWhitePaper.pdfhttp://business.motorola.com/experiencelte/pdf/LTESpectrumAnalysisWhitePaper.pdf -
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This article from Motoro la provides a good overview of LTE. The following are covered:
LTE Architecture
Evolved Radio Access Network (RAN)
Serving Gateway (SGW)
Mobility Management Entity (MME)
Packet Data Network Gateway (PDN GW)
LTE Protocol Stacks
Control Plane Stack:
User Plane Stack
Mobility Management
Evolved Multicast Broadcast Multimedia Services (E-MBMS)
READ
Technical Overview of 3GPP LTE
http://business.motorola.com/experiencelte/pdf/LTETechnicalOverview.pdfhttp://business.motorola.com/experiencelte/pdf/LTETechnicalOverview.pdfhttp://business.motorola.com/experiencelte/pdf/LTETechnicalOverview.pdf -
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A technical presentation about LTE.
READ
3GPP LTE Medium Access Control (MAC) Sub-Layer Presentation
A presentation describing the MAC Sub-Layer of LTE. The following topics are covered:
Logical, Transport and Physical Channels
Random Access Procedure
DL-SCH and UL-SCH Data Transfer
http://hgmyung.googlepages.com/3gppLTE.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-MAC.pdfhttp://hgmyung.googlepages.com/3gppLTE.pdfhttp://hgmyung.googlepages.com/3gppLTE.pdf -
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READ
3GPP LTE Radio Link Control (RLC) Sub-Layer Presentation
A presentation describing the Radio Link Control (RLC) Sub-Layer of LTE. The following topics are covered:
RLC sub layer functions and interactions with other layers
RLC transparent (TMD), unacknowledged (UMD) and acknowledged (AMD) modes
Unacknowledged mode handling and state variables
Acknowledged mode handling and state variables
TMD, UMD and AMD PDU formats
READ
3GPP LTE Packet Data Convergence Protocol (PDCP) Sub-Layer Presentation
http://www.eventhelix.com/lte/presentations/3GPP-LTE-MAC.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-RLC.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-RLC.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-RLC.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-MAC.pdf -
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A presentation describing the Packet Data Convergence Protocol (PDCP) Sub-Layer of LTE. The following topics are covered:
PDCP sub layer functions and interactions with other layers
Robust Header Compression (RoHC)
RoHC Modes (U-Mode, O-Mode and R -Mode
RoHC Compressor and Decompressor States in different modes
PDCP PDU formats
Control and User Plane PDUs
PDCP Fields
READ
Dynamic Radio Resource Management in 3GPP LTE
L T E l i (LTE) T i l
http://www.eventhelix.com/lte/presentations/3GPP-LTE-PDCP.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-PDCP.pdfhttp://www.eventhelix.com/lte/presentations/3GPP-LTE-PDCP.pdf -
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Analysis of different radio resource management and frequency reuse techniques in LTE.
READ
Comparison of Channel Dependent Scheduling Policies in LTE Uplink
In this paper, three scheduling schemes are evaluated in different scenarios for SC-FDMA used in LTE uplink, First maximum expansion and recursive maximum expansion are powerful in terms of gain over round
robin but suffers from poor fairness results, Search-Tree Based Algorithm guarantees same amount of bandwidth for each user and yet improve the performance by factor 0.5 up to 1.2. Search-Tree Based allows
adaptive computational complexity by introducing variable number of best branches to be stored in the search procedure..
READ
MIMO Technologies in 3GPP LTE and LTE-Advanced
L T E l ti (LTE) T t i l
http://www.bth.se/fou/cuppsats.nsf/all/c858bf5b4979a6b3c1257552004262f6/$file/Sajid_Hussain_MSc_Thesis_Report.pdfhttp://cobweb.ecn.purdue.edu/~ee695n/projects/Khalid_Tahboub.pdfhttp://cobweb.ecn.purdue.edu/~ee695n/projects/Khalid_Tahboub.pdfhttp://cobweb.ecn.purdue.edu/~ee695n/projects/Khalid_Tahboub.pdfhttp://www.bth.se/fou/cuppsats.nsf/all/c858bf5b4979a6b3c1257552004262f6/$file/Sajid_Hussain_MSc_Thesis_Report.pdfhttp://www.bth.se/fou/cuppsats.nsf/all/c858bf5b4979a6b3c1257552004262f6/$file/Sajid_Hussain_MSc_Thesis_Report.pdf -
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Majority of the world's operators and vendors are already committed to LTE deployments and developments, making
LTE the market leader in the upcoming evolution to 4G wireless communication systems. Multiple input multiple output
(MIMO) technologies introduced in LTE such as spatial multiplexing, transmit diversity, and beamforming are key
components for providing higher peak rate at a better system efficiency, which are essential for supporting future
broadband data service over wireless links.
READ
MIMO Transmissions for LTE and HSPA Networks
Long Term Evolution (LTE) Tutorials
http://www.hindawi.com/journals/wcn/2009/302092.htmlhttp://www.3gamericas.org/documents/Mimo_Transmission_Schemes_for_LTE_and_HSPA_Networks_June-2009.pdfhttp://www.hindawi.com/journals/wcn/2009/302092.htmlhttp://www.hindawi.com/journals/wcn/2009/302092.html -
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For over a decade universities and wireless research labs have been combining multiple antenna
transmission techniques with advanced signal processing algorithms to create what is sometimes called smart-antenna
and is also known as multi-input multi-output (MIMO) technology. These schemes are now moving into mainstream
communication systems. Indeed, MIMO technologies can already be found in wireless local area network access points
(e.g. 802.11n based solutions). This has led to MIMO being standardized in WiMAX as well as in 3GPP Rel-6 and Rel-
7 of the UTRAN (HSPA) specifications. Further, Rel-8 of the E-UTRAN (LTE) 3GPP specifications, completed in March
2009, included the most advanced forms of MIMO in any standard in the industry. And even more advanced MIMO
enhancements are currently being studied for inclusion in 3GPP Rel-9 and Rel-10.
READ
SAE - The Core Network for LTE
Presentation from Ericsson describing the evolution of the LTE Core Network.
Long Term Evolution (LTE) Tutorials
http://www.3gamericas.org/documents/Mimo_Transmission_Schemes_for_LTE_and_HSPA_Networks_June-2009.pdfhttp://www.3g4g.co.uk/Lte/SAE_Pres_0804_Ericsson.pdfhttp://www.3gamericas.org/documents/Mimo_Transmission_Schemes_for_LTE_and_HSPA_Networks_June-2009.pdfhttp://www.3gamericas.org/documents/Mimo_Transmission_Schemes_for_LTE_and_HSPA_Networks_June-2009.pdf -
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READ
EPS Architecture Explained
GTP Overview
Long Term Evolution (LTE) Tutorials
http://www.3g4g.co.uk/Lte/SAE_Pres_0804_Ericsson.pdfhttp://www.3g4g.co.uk/Lte/SAE_Pres_0804_Ericsson.pdf -
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LTE and Voice
IMS and LTE
Long Term Evolution (LTE) Tutorials
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LTE Signal Demonstration
LTE Presentation
Long Term Evolution (LTE) Tutorials
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