POSTER - Find Your Way in DVB-H

DVB-H Mobile TV broadcast architecture
IP streams from
ESG servers
GPS
receiver
GPS
receiver
10 MHz, 1 PPS
10 MHz, 1 PPS
GPS
receiver
GPS
receiver
10 MHz, 1 PPS
MPEG2-TS HP
GPS
receiver
10 MHz, 1 PPS
10 MHz, 1 PPS
IP
DVB-T/H
SFN Adapter
DVB-H
IP Encapsulator
GPS
receiver
ASI > IP
Video Gateways
GPS
receiver
10 MHz, 1 PPS
10 MHz, 1 PPS
IP > ASI
Video Gateways
What about DVB-H bursts ?
MPEG2-TS encapsulation over IP
The number of MPEG2-TS packets per IP packet is limited to 7 in order to respect the Maximum Transfer Unit (MTU)
Instant bit rate
IP
20 bytes
DVB-H Service 1
Off-Time
MPEG2-TS packets - n*188 bytes
RTP
12 bytes
Burst bitrate
40 + n*188 bytes
15.0 Mbps
FEC packets transmission
ESG data carousel
MPEG / DVB tables
UDP
8 bytes
Time
Mapping diagram of DVB-H services using
time-slicing in MPEG2 Transport Stream
Live DVB-H burst monitoring using
real-time DVB-H Analyzer
IP
20 bytes
UDP
8 bytes
RTP
12 bytes
FEC Header
IP
20 bytes
UDP
8 bytes
RTP
12 bytes
FEC Header
4 bytes
4 bytes
Port N
FEC Data (column)
Port N+2
FEC Data (row)
Port N+4
PID
0x0000
0x0001
0x0002
0x0010
0x0011
0x0012
0x0013
0x0015
0x1FFF
PAT
CAT
PMT
MPE
NIT
SDT
BAT
INT
EIT
TDT
ST
TOT
MHP-AIT
INT
PAT
CAT
TSDT
NIT
SDT or BAT
EIT
RST
MIP
Null packet
Sections
Headers
UDP
Source Port
Dest. Port
Length
Checksum
Total 8 Bytes
MPE Encapsulation
IPv6 section
Header
Complete IP Datagram
UDP section
Header
RTP section
Header
Version = 2
RTP
H264/AVC, MPEG-4, ... compressed AV payload
CC
Marker
IP data average
bitrate (Service 1)
350 kbps
DVB-T/H
RF Analyzer
DVB-H
Modulators
padd
Xtension
IP streams from
H264 encoders
1x SFN cell
IP Distribution
3x Transmitters
TABLE ID
0x0000
0x0001
0x0002
0x003E
0x0040
0x0042
0x004A
0x004C
0x004E
0x0070
0x0072
0x0073
0x0074
0x0078
PT
Seq Number
Timestamp SSRC ID
(4 Bytes) (4 Bytes)
CSRC IDs
(nx4 Bytes)
Total 12 Bytes
IPv6
IP Datagram Fragments
IPv6 section
Header
UDP section
Header
RTP section
Header
H264/AVC, MPEG-4, ...
compressed AV payload
IPv6 section
Header
H264/AVC, MPEG-4, ...
compressed AV payload
V6 Traffic
Class
Next
Header
Payload
Length
Flow Label
Hop
Limit
Source @
(16 Bytes)
Dest. @
(16 Bytes)
Total 40 Bytes
max 4080 Bytes
cni
section lst section mac@ 4
number number
mac@ 3
LSf=1
Real time Parameters
pusi=1
188 Bytes
1Byte
Payload
(183 Bytes)
...
TS
Header
Stuffing
0x47
Sync Byte
PID
13 bits
cc
a
fie dap
ld t.
(184 Bytes)
TS
Header
tsc
afc
Payload
pointer
field
pointer
field = 0
1Byte
TS
Header
tei
pusi
tp
pusi=1
(183 Bytes)
...
MPE FEC Payload
First Byte Address
if Time Slicing and/or MPE-FEC used
MPEG2-TS
Payload
table
frame
Delta_t
(to next time slice)
TS
Header
mac@ 1
table_id
16..4095 Bytes
MPEG2 Transport Stream
mac@ 2
LL
C/
SN
AP
mac@ 6 mac@ 5
LSf
Section
length
asc
3E
psc
Section Payload
rfu
MPE
Header
ssi
pi
rfu
Section Payload
Chksum
CRC
MPE
Header
MPE Sections
Chksum
CRC
MPE
afc=10, 11
Total 4 Bytes
Enensys Technologies S.A. - Le Germanium, 80 avenue des Buttes de Coesmes - 357000 Rennes - France - [email protected] - +33 1 70 72 51 70
www.enensys.com