This document outlines different encapsulation schemes for transferring IP datagrams over DVB-S and DVB-S2 satellite networks. It describes Multi-Protocol Encapsulation (MPE), Unidirectional Lightweight Encapsulation (ULE), and Generic Stream Encapsulation (GSE). MPE is the standard method to carry IP packets over MPEG-2 transport streams. ULE was developed to eliminate unnecessary overhead in MPE. GSE provides efficient encapsulation of IP datagrams over variable length layer 2 packets and supports multiple protocols. The document also discusses a hardware implementation of a DVB-S2 modulator using a ZedBoard with a dual-core ARM processor and hardware designs. It concludes that G

1. Analysisand ImplementationofEncapsulation Schemes
forBaseband FrameofDVB-S2SatelliteModulator
Eng:Ahmed Ayman Fahmy

2. outlines
Introduction
Digital video broadcasting –Satellite
transferring IP datagrams over DVB-S / DVB-S2
Hardware Implementation
CONCLUSIONS
REFERENCES

3. Introduction
Broadcasting: is the method of transferring a message to all
recipients simultaneously.
Digital video broadcasting (DVB):isthe set of standard thatdefine
digital broadcasting using existing satellite, cable and terrestrial
infrastructure.
DVBstandards
Every communication satellite islocatedgeostationary =36000km
DVB-S DVB-S2
DVB-C DVB-C2
DVB-T DVB-T2

4. Digital video broadcasting –Satellite
DVB-S:is a digital satellite transmission system developed by the DVB
Project. Itwas first introduced in1993.
The DVB-Ssystem isbasedon QPSK, 8PSK, 16QAM modulation
The System is directly compatible with MPEG-2 coded TV signals.

5. DVB-S2
The DVB-S2stands for digital video broadcasting-satellite second
generation
Itisbased on DVB-S.
The standard is developed in 2003 by the DVB Project.
Ituses QPSK, 8PSK, 16APSK and 32APSKmodulation.
DVB-S2 uses a very powerful ForwardErrorCorrection(FEC)

6. transferringIPdatagrams over DVB-S
Today Ethernettransfers protocols such as Internet isthe most
frequently way to transfer data all over the world. The future goals
are to reduce the use cables The Digital Video Broadcasting (DVB)
offers a suitable way to comply with these requirements
DVB enable to transferring IP datagrams by using encapsulation
schemes
Multi-Protocol Encapsulation
Unidirectional LightweightEncapsulation
Generic StreamEncapsulation

7. Multi-Protocol Encapsulation (MPE)
Itis the standard method to carry IP packets over MPEG-2 TS
MPE was first proposedin 1996 .
MPE packets have 12 bytes of header and 4 bytes of cyclic
redundancy check (CRC)as the tail
MPE makes use of a medium access control (MAC)
level device address

8. Multi-Protocol Encapsulation (MPE)
IPpackets typically 40 B–1500Byte
MPEG-2 TSPacket payload184 Byte +4 Byte header.
packets encapsulated using MPE (upto 4 KB)

9. Unidirectional LightweightEncapsulation
(ULE)
ULE protocol is an alternative to MPE .
Itis used to eliminate unnecessary overhead in MPE.
Native Support for:IPv4/IPv6/Ethernet
Payload upto 32 KB

10. Generic StreamEncapsulation (GSE)
Itis used to carry IP packets over DVB-S2.
GSE provides efficient encapsulation of IP datagrams over variable
length Layer 2packets
Support multi-protocol encapsulation (IPv4, IPv6, MPEG, ATM,
Ethernet, etc.)
Low complexity.
Easy to implement.

11. Hardware Implementation
Hardware :-ZedBoard
Software :-Vivado
Dual-core ARM Cortex™-A9.
512 MB DDR3.
4 GB SDcard.
Linux/Android/RTOS.

12. Hardware Implementation
DVB-S2

13. Hardware Implementation

14. CONCLUSIONS
GSE is more efficient than other encapsulation schemes.
Encapsulated payload bytes
Transmitted bytes
Transmission efficiency = .

15. REFERENCES
Digital Video Broadcasting (DVB): DVB Specification for Data Broadcasting,
ETSIEN 301 192, Nov. 2004, European Standard,v.1.4.1
[RFC4259] Montpetit M.-J., Fairhurst G., Clausen H, Collini-Nocker B., and H.
Linder, "A Framework for Transmission of IPDatagrams over MPEG-2
Networks", RFC 4259, November2005
Internet-Draft: draft-cantillo-ipdvb-s2encaps-04.txt
A Comparison of IP Datagrams Transmission using MPE and ULE over Mpeg-
2/DVB Networks”, Teh Chee Hong, Wan Tat Chee, Rahmat Budiarto
Video Broadcasting (DVB): Generic Stream Encapsulation Protocol, DVB
Consortium Document Al 16, May 2007
ZedBoard (Zynq Evaluation and Development) Hardware User’s Guide

16. Any questions

17. Thank you