ETSI ETS 300 813 ed.1 (1997-12)

SLOVENSKI STANDARD
SIST ETS 300 813 E1:2003
01-december-2003
Digitalna videoradiodifuzija (DVB) – Vmesniki DVB do omrežij pleziohrone
digitalne hierarhije (PDH)

Digital Video Broadcasting (DVB); DVB interfaces to Plesiochronous Digital Hierarchy

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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Foreword .......................................................................................................................................................5

1 Scope ..................................................................................................................................................7

2 Normative references..........................................................................................................................7

3 Definitions and abbreviations ..............................................................................................................8

3.1 Definitions ............................................................................................................................8

3.2 Abbreviations .......................................................................................................................8

4 Baseline specification..........................................................................................................................9

4.1 MPEG Physical Interface (MPI) .........................................................................................11

4.1.1 Signal processing in the transmitter ..............................................................11

4.1.2 Signal processing in the receiver ..................................................................13

4.2 MPEG/ATM Adaptation (MAA) ..........................................................................................14

4.2.1 Signal processing in the transmitter ..............................................................15

4.2.2 Signal processing in the receiver ..................................................................16

4.3 Virtual Path Entity (VPE)....................................................................................................17

4.3.1 Signal processing in the transmitter ..............................................................18

4.3.2 Signal processing in the receiver ..................................................................18

4.4 Virtual Path Multiplexing Entity (VPME).............................................................................18

4.4.1 Signal processing in the transmitter ..............................................................19

4.4.2 Signal processing in the receiver ..................................................................20

4.5 PDH Path Termination (PPT) ............................................................................................21

4.5.1 Path termination 1 544 kbit/s.........................................................................21

4.5.1.1 Signal processing in the transmitter ....................................22

4.5.1.2 Signal processing in the receiver.........................................22

4.5.2 Path termination 2 048 kbit/s.........................................................................23

4.5.2.1 Signal processing in the transmitter ....................................24

4.5.2.2 Signal processing in the receiver.........................................25

4.5.3 Path termination 6 312 kbit/s.........................................................................27

4.5.3.1 Signal processing in the transmitter ....................................27

4.5.3.2 Signal processing in the receiver.........................................28

4.5.4 Path termination 8 448 kbit/s.........................................................................29

4.5.4.1 Signal processing in the transmitter ....................................30

4.5.4.2 Signal processing in the receiver.........................................31

4.5.5 Path termination 34 368 kbit/s.......................................................................32

4.5.5.1 Signal processing in the transmitter ....................................32

4.5.5.2 Signal processing in the receiver.........................................34

4.5.6 Path termination 44 736 kbit/s.......................................................................35

4.5.6.1 Signal processing in the transmitter ....................................35

4.5.6.2 Signal processing in the receiver.........................................37

4.5.7 Path termination 139 264 kbit/s.....................................................................39

4.5.7.1 Signal processing in the transmitter ....................................39

4.5.7.2 Signal processing in the receiver.........................................41

4.6 PDH Physical Interface (PPI).............................................................................................42

4.6.1 Interface at 1 544 kbit/s.................................................................................43

4.6.1.1 Signal processing in the transmitter ....................................43

4.6.1.2 Signal processing in the receiver.........................................43

4.6.2 Interface at 2 048 kbit/s.................................................................................43

4.6.2.1 Signal processing in the transmitter ....................................43

4.6.2.2 Signal processing in the receiver.........................................43

4.6.3 Interface at 6 312 kbit/s.................................................................................44

4.6.3.1 Signal processing in the transmitter ....................................44

4.6.3.2 Signal processing in the receiver.........................................44

4.6.4 Interface at 8 448 kbit/s.................................................................................45

4.6.4.1 Signal processing in the transmitter ....................................45

4.6.4.2 Signal processing in the receiver ........................................ 45

4.6.5 Interface at 34 368 kbit/s .............................................................................. 45

4.6.5.1 Signal processing in the transmitter.................................... 45

4.6.5.2 Signal processing in the receiver ........................................ 45

4.6.6 Interface at 44 736 kbit/s .............................................................................. 46

4.6.6.1 Signal processing in the transmitter.................................... 46

4.6.6.2 Signal processing in the receiver ........................................ 46

4.6.7 Interface at 139 264 kbit/s ............................................................................ 47

4.6.7.1 Signal processing in the transmitter.................................... 47

4.6.7.2 Signal processing in the receiver ........................................ 47

4.7 Equipment Management Function (EMF) ......................................................................... 47

4.7.1 Overview of the EMF .................................................................................... 47

4.7.2 Configuration ................................................................................................ 49

4.7.3 Fault (maintenance) management................................................................ 49

4.7.4 Performance management........................................................................... 49

Annex A (informative): Mechanism of the adaptive clock method ......................................................... 54

Annex B (informative): Enabling/disabling the HEC functions................................................................ 55

Annex C (informative): Transmission capacity of the Network Adapter ................................................. 56

Annex D (informative): Definition of codes ............................................................................................. 57

D.1 Alternate Mark Inversion (AMI)......................................................................................................... 57

D.2 High Density Bipolar of order 3 (HDB3)............................................................................................ 57

D.3 Bipolar with 3 Zero Substitution (B3ZS)............................................................................................ 57

D.4 Bipolar with 6(8) Zero Substitution (B6ZS and B8ZS) ...................................................................... 57

D.5 Coded Mark Inversion (CMI) ............................................................................................................ 57

History......................................................................................................................................................... 58

This European Telecommunication Standard (ETS) has been produced by the Joint Technical Committee

(JTC) of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique

NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in

the specific field of broadcasting and related fields. Since 1995 the JTC became a

which is responsible for the standardization of radio and television receivers. The EBU

is a professional association of broadcasting organizations whose work includes the

co-ordination of its members' activities in the technical, legal, programme-making and

Founded in September 1993, the DVB Project is a market-led consortium of public and private sector

organizations in the television industry. Its aim is to establish the framework for the introduction of

MPEG-2 based digital television services. Now comprising over 200 organizations from more than

25 countries around the world, DVB fosters market-led systems, which meet the real needs, and

This European Telecommunication Standard (ETS) specifies the transmission of MPEG-2 Transport

Streams (TS) between two DVB interfaces as defined in EN 50083-9 [7] within Plesiochronous Digital

Hierarchy (PDH) networks working at the ITU-T Recommendation G.702 [8] hierarchical bit-rates of

1 544 kbit/s, 2 048 kbit/s, 6 312 kbit/s, 8 448 kbit/s, 34 368 kbit/s, 44 736 kbit/s and 139 264 kbit/s.

The use of any of these bit rates is optional, if however one or more rates are selected the complete

specification applies. The definition of the network aspects of the transmission of MPEG-2-TSs is based to

The equipment considered in this ETS is the Network Adapter performing the adaptation between

This ETS incorporates by dated and undated reference, provisions from other publications. These

normative references are cited at the appropriate places in the text and the publications are listed

hereafter. For dated references, subsequent amendments to or revisions of any of these publications

apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest

[2] ETS 300 417-2-1: "Transmission and Multiplexing (TM); generic requirements of

[15] ITU-T Recommendation G.823: "The control of jitter and wander within digital

[16] ITU-T Recommendation G.824: "The control of jitter and wander within digital

for international, constant bit rate digital paths at or above the primary rate".

[24] ITU-T Recommendation J.82: "Transport of MPEG-2 constant bit rate television

MPEG-2 Transport Stream (TS) packet: A data packet possessing a length of 188 bytes including

RS coded MPEG-2 Transport Stream (TS) packet: A data packet possessing a length of 204 bytes.

Bytes 1 to 188 contain an MPEG-2-TS packet. Bytes 189 to 204 contain the parity-check bytes for the

error correction of the preceding bytes of this packet. These parity-check bytes are generated using a

The Network Adapter is an equipment which performs the adaptation of data structured as an

MPEG-2-TS to the characteristics of a PDH link (see ITU-T Recommendation H.222.0 [19]). The solution

selected for the transmission of MPEG-2-TS packets, respectively RS coded MPEG-2-TS packets, over

PDH links is based on the use of ATM cells. Therefore, the adaptation of the transport of an MPEG-2-TS

The normative references applicable to the adaptation unless specifically mentioned are given here below:

- the adaptation of MPEG-2-TS packets into ATM cells using an AAL type 1 shall be performed as

AAL type 1 is specified in ITU-T Recommendation I.363.1 [21], the ATM layer is specified in ITU-T

- the adaptation of ATM cells into PDH framing shall be performed as described in ITU-T

There is no normative reference for the adaptation of RS coded MPEG-2-TS packets to ATM cells.

This adaptation shall be performed as described in ITU-T Recommendation J.82 [24] for MPEG-2-TS

packets, with the only exception that the RS coded MPEG-2-TS packets are not aligned with the structure

The Network Adapter is described as a group of functional blocks. The partitioning into functional blocks is

based on existing recommendations on Synchronous Digital Hierarchy (SDH) equipment (ITU-T

The present description is a functional description and does not imply any specific equipment

implementation but it allows for the implementation of a separate transmitter and receiver as well as a

It should be noticed that most of ATM functional blocks contained in ITU-T Recommendation I.732 [23] do

the Network Adapter accepts, at its input port, either an MPEG-2-TS consisting of

consecutive MPEG-2-TS packets, or an extended version of an MPEG-2-TS that already

contains error protection (RS coded MPEG-2-TS packets). Packets length of 188 bytes and

this corresponds to the adaptation between the MPEG-2-TS respectively the RS coded

adaptation, provides functions for the MPEG-2-TS clock transmission transparency (adaptive

clock method) and information transparency using the clock and data recovery mechanism of

AAL1. It is expected that under normal transmission conditions the received MPEG-2-TS will

be quasi error free, corresponding to a Bit Error Rate (BER) of about 10 to 10 at the

input of an MPEG-2 equipment at the receiver site. This requirement is in accordance with

DVB systems using satellite services EN 300 421 [4] and cable systems EN 300 429 [5];

the only function performed is the VP setting. It allows the simultaneous transmission of

if different MPEG-2-TS have to be simultaneously transported, the ATM cells belonging to

different VPs are multiplexed in the transmitter respectively demultiplexed in the receiver.

If only one MPEG-2-TS has to be transported, only one VP is used. The adaptation to the

useful bit-rate offered by the PDH link is performed by adding respectively removing idle

cells. At the receiver, this block also performs cell delineation and ATM cell header checking;

this block generates and terminates all the overhead of the PDH frames carrying ATM cells.

The overhead contains information providing Operation Administration and Maintenance

this block prepares the signal for the transmission on the physical medium. Channel

encoding is used as described in ITU-T Recommendation G.703 [9] that allows a network

this block manages all the other functional blocks. It ensures the Man Machine Interface

This function provides the interface between the Network Adapter and the MPEG-2-TS sources or

receivers. The physical characteristics of this interface shall follow the specification given in

EN 50083-9 [7]. Three different types of interfaces are specified. They are called:

The interfaces use the MPEG-2-TS Packet structure (188 bytes) or the RS-coded packet structure

(204 bytes). For the SPI and the SSI, the 204-byte format may be used either for the transmission of

188-byte MPEG-2-TS packets with 16 dummy bytes, or for the transmission of 204-byte RS-coded

In order to prevent alarms being raised and failures being reported during set-up procedures or if the input

port is not in use (in the case of a multi-port equipment), the MPI function shall have the ability to enable

or disable fault case declaration. The MPI shall be either monitored (MON) or not monitored (NMON).

The state MON or NMON is provisioned by the equipment manager to the MPI via the EMF function.

- for the SPI, this recovery is based on the use of the Data (0-7), the DVALID, PSYNC and clock

- for the SSI interface, the processing includes optical receiver (for fibre-optic-based link) or

coupling/impedance matching (for coaxial cable), amplifier/buffer, clock recovery and bi-phase

decoding, serial to parallel conversion, as specified in annex A of EN 50083-9 [7];

- for the ASI interface, the processing includes optical receiver (for fibre-optic-based link) or

coupling/impedance matching (for coaxial cable), amplifier/buffer, clock/data recovery and serial-to-

parallel conversion, FC comma deletion, 8B/10B decoding, as specified in annex B of

EN 50083-9 [7]. In the next step, the recovery of the TS clock is performed (see annex E of

EN 50083-9 [7] on Implementation guidelines and deriving clocks from the MPEG-2 packets for

The function also realizes the sync acquisition of the MPEG-2-TS packets respectively of the RS-coded

MPEG-2-TS packets, on the basis of the method proposed in subclause 3.2 of ETR 290 [6]

(five consecutive correct sync bytes for sync acquisition; two or more consecutive corrupted sync bytes

The packet size (188 bytes or 204 bytes) may be recovered from the received signals, on the basis of the

PSYNC signal for the parallel interface, or on the basis of periodicity of the synchronization bytes for the

serial interfaces. For the case of the SPI and of the SSI interface, the decision between 204-byte format

for MPEG-2-TS packets with 16 dummy bytes and 204-byte format for RS-coded MPEG-2-TS packets

- on the basis of the DVALID signal for the SPI: a high level during the last 16 bytes indicate RS

- on the basis of the value of received synchronization bytes for the SSI interface: 47H indicates

204-byte format with 16 dummy bytes and B8H indicates 204-byte RS coded (see subclause A.3.2

For the case of the ASI Interface, the following decision is taken: if the packet size is 204 bytes, it is an

Dummy bytes are discarded by the MPI function in the case of the 204-byte format with 16 dummy bytes.

The function passes the recovered MPEG-2-TS packets or the RS coded MPEG-2-TS packets and the

The function shall meet the electrical/optical characteristics, return loss and jitter requirements specified in

If any of these defects is detected, a Loss Of Signal (LOS) is reported at the EMF if the function is in MON

If a loss of synchronization of MPEG-2-TS packets or RS coded MPEG-2-TS packets is detected

according to the procedure proposed in ETR 290 [6] subclause 3.2 (i.e. two or more consecutive

corrupted sync bytes are found), a TS-sync_loss error on the input signal (TSLE_I) is reported at the EMF

Errored blocks are detected on the basis of the transport_error_indicator present in the headers of the

incoming MPEG-2-TS packets, in accordance to ETR 290 [6]. One second filters perform a simple

integration of errored blocks by counting during one second interval. The function generates the following

performance parameters concerning the input MPEG-2-TS signal received on the interface: