ETSI TS 102 721-2 V1.2.1 (2013-08)

Satellite Earth Stations and Systems (SES); Air Interface for S-band Mobile Interactive Multimedia (S-MIM); Part 2: Forward Link Subsystem Requirements

RTS/SES-00334

General Information

• Status: Published
• Publication Date: 07-Aug-2013
• Technical Committee: SES SCN - Satellite Communications and Navigation
• Current Stage: 12 - Completion
• Due Date: 12-Aug-2013
• Completion Date: 08-Aug-2013
• Mandate: M/496

Standards Content (Sample)

Technical Specification
Satellite Earth Stations and Systems (SES);
Air Interface for S-band Mobile Interactive Multimedia (S-MIM);
Part 2: Forward Link Subsystem Requirements

2 ETSI TS 102 721-2 V1.2.1 (2013-08)

Reference
RTS/SES-00334
Keywords
MSS, satellite
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3 ETSI TS 102 721-2 V1.2.1 (2013-08)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.1 Informative references . 5
3 Definitions and abbreviations . 6
3.1 Definitions . 6
3.2 Abbreviations . 6
4 General Description . 7
4.1 Physical Layer . 8
5 Forward Link Radio Interface Requirements . 9
5.1 Service Requirements . 9
5.1.1 Service Segment 1 . 9
5.1.2 Service Segment 2 . 10
5.1.3 Service Segment 3 . 11
5.1.4 Signalling . 11
5.1.5 Interaction between the Services . 12
5.1.6 Service Distribution . 12
5.2 System Requirements . 12
5.2.1 Interface Requirements . 12
5.2.2 Interoperability Requirements . 13
5.2.3 Addressed Spectrum . 13
5.2.4 Operational Requirements . 13
5.2.5 Design Requirements . 14
Annex A (informative): Granularity for real-time traffic allocation for DVB-SH Usage . 15
History . 16

ETSI
4 ETSI TS 102 721-2 V1.2.1 (2013-08)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Satellite Earth Stations and
Systems (SES).
The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [1].
Introduction
The S-MIM system specified herein is designed to provide:
• Interactive mobile broadcast services.
• Messaging services for handhelds and vehicular terminals, capable of serving millions of terminals due to a
novel optimized radio-interface in the RTN link.
• Real-time emergency services such as voice and file transfer, mainly addressing institutional users on-the-
move such as fire brigades, civil protection, etc.
Inside the S-band, the 2 GHz MSS band is of particular interest for interactive multimedia, since it allows two-way
transmission. Typically, the DVB-SH standard [i.7] is applied for broadcast transmission; ETSI SDR [i.2] or
DVB-NGH [i.8] standards are other alternatives. Essential requirements under the R&TTE directive are covered by the
harmonized standard EN 302 574 [i.4], [i.5] and [i.6].
The technology applied has been developed in the framework of the ESA funded project "DENISE" (ESTEC/Contract
Number 22439/09/NL/US).
ETSI
5 ETSI TS 102 721-2 V1.2.1 (2013-08)
1 Scope
The present document specifies the S-MIM (S-band Mobile Interactive Multimedia) system in which a standardized
S-band satellite mobile broadcast system is complemented by the addition of a return channel.
The present document is part 2 of the multi-part deliverable and concerns the requirements for a forward link radio
interface in the S-band Mobile Interactive Multimedia (S-MIM) system; it focuses in particular on DVB-SH usage.
The other parts are listed in the foreword of part 1 [1].
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 102 721-1: "Satellite Earth Stations and Systems (SES); Air Interface for S-band Mobile
Interactive Multimedia (S-MIM); Part 1: General System Architecture and Configurations".
[2] ETSI TS 102 721-5: "Satellite Earth Stations and Systems; Air Interface for S-band Mobile
Interactive Multimedia (S-MIM); Part 5: Protocol Specifications, Link Layer".
[3] ETSI TS 102 721-6: "Satellite Earth Stations and Systems; Air Interface for S-band Mobile
Interactive Multimedia (S-MIM); Part 6: Protocol Specifications, System Signalling".
2.1 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TS 102 584: "Digital Video Broadcasting (DVB); DVB-SH Implementation Guidelines".
[i.2] ETSI EN 302 550 (all parts and sub-parts): "Satellite Earth Stations and Systems (SES); Satellite
Digital Radio (SDR) Systems".
[i.3] ETSI EN 302 583: "Digital Video Broadcasting (DVB); Framing Structure, channel coding and
modulation for Satellite Services to Handheld devices (SH) below 3 GHz".
[i.4] ETSI EN 302 574-1: "Satellite Earth Stations and Systems (SES); Harmonized standard for
satellite earth stations for MSS operating in the 1 980 MHz to 2 010 MHz (earth-to-space) and
2 170 MHz to 2 200 MHz (space-to-earth) frequency bands; Part 1: Complementary Ground
Component (CGC) for wideband systems: Harmonized EN covering the essential requirements of
article 3.2 of the R&TTE Directive".
[i.5] ETSI EN 302 574-2: "Satellite Earth Stations and Systems (SES); Harmonized standard for
satellite earth stations for MSS operating in the 1 980 MHz to 2 010 MHz (earth-to-space) and
2 170 MHz to 2 200 MHz (space-to-earth) frequency bands; Part 2: User Equipment (UE) for
wideband systems: Harmonized EN covering the essential requirements of article 3.2 of the
R&TTE Directive".
ETSI
6 ETSI TS 102 721-2 V1.2.1 (2013-08)
[i.6] ETSI EN 302 574-3: "Satellite Earth Stations and Systems (SES); Harmonized standard for
satellite earth stations for MSS operating in the 1 980 MHz to 2 010 MHz (earth-to-space) and
2 170 MHz to 2 200 MHz (space-to-earth) frequency bands; Part 3: User Equipment (UE) for
narrowband systems: Harmonized EN covering the essential requirements of article 3.2 of the
R&TTE Directive".
[i.7] ETSI TS 102 585: "Digital Video Broadcasting (DVB); System Specifications for Satellite
services to Handheld devices (SH) below 3 GHz".
[i.8] DVB BlueBook A160: "Next Generation broadcasting system to Handheld, physical layer
specification (DVB-NGH)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
2 GHz MSS band: 1 980 MHz to 2 010 MHz (earth-to-space) and 2 170 MHz to 2 200 MHz (space-to-earth) frequency
bands
NOTE: These paired bands are assigned to MSS.
architecture: abstract representation of a communications system
NOTE: Three complementary types of architecture are defined:
� Functional Architecture: the discrete functional elements of the system and the associated logical
interfaces.
� Network Architecture: the discrete physical (network) elements of the system and the associated
physical interfaces.
� Protocol Architecture: the protocol stacks involved in the operation of the system and the
associated peering relationships.
ESR(5): percentage of the 20 second periods that contain 1 erroneous second or less
flow (of IP packets): traffic associated with a given connection-oriented, or connectionless, packet sequence having the
same 5-tuple of source address, destination address, Source Port, Destination Port and Protocol type
global content: content that is intended for the whole coverage area of a satellite beam
local content: content that is intended for a part of the coverage area of a satellite beam
S-band: equivalent to 2 GHz MSS band
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACK Acknowledgement
APSK Amplitude and Phase Shift Keying
BCH Broadcast Channel
CCH Common Channel
CGC Complementary Ground Component
CU Channel Unit
DCH Dedicated Channel
DVB-SH Digital Video Broadcasting, Satellites services to Handhelds
EIRP Equivalent Isotropic Radiated Power
ESR Erroneous Second Ratio
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7 ETSI TS 102 721-2 V1.2.1 (2013-08)
FWD Forward (link)
GHz Giga Hertz
GNSS Global Navigation Satellite System
IP Internet Protocol
LL Low Latency
LLCT Link Layer Configuration Table
LOS Line of Sight
MFN Multi-Frequency Network
MLR Message Loss Ratio
MPEG Moving Pictures Experts Group
MPEG-TS MPEG Transport Stream
MSS Mobile Satellite Services
NRT Non-Real Time
OFDM Orthogonal Frequency Division Multiplex
PCH Physical Channel
PLR Packet Loss Ratio
QAM Quadrature Amplitude Modulation
QoS Quality of Service
QPSK Quadrature Phase-Shift Keying
QSCT QS-CDMA Configuration Table
QSDT QS-CDMA Dynamic Table
QSPCT QS-CDMA Power Correction Table
QSTIM QS-CDMA Terminal Information Message
R&TTE Radio and Telecommunications Terminal Equipment
RL Regular Latency
RMS Root Mean Square
RT Real Time
RTN Return (link)
SAT SSA Access Table
SCT SSA Configuration Table
SDR Satellite Digital Radio
SDT SSA Dynamic Configuration Table
SFN Single Frequency Network
S-MIM S-band Mobile Interactive Multimedia
SMS Short Message Service
SS1 Service Segment 1
SS2 Service Segment 2
SS3 Service Segment 3
SSA Spread Spectrum ALOHA
TDM Time Division Multiplex
VoIP Voice over IP
4 General Description
The Forward Link S-MIM protocol stack for access to SS1, SS2 and SS3 services is depicted in Figure 4.1.
ETSI
8 ETSI TS 102 721-2 V1.2.1 (2013-08)
USER PLANE CONTROL PLANE MANAGEMENT PLANE

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IPsec
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EC NEC
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Coding,
rt-DCH rt-CCH nrt-CCH nrt-BCH
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P
Transmission
rt-PCH nrt-PCH
Figure 4.1: Protocol stack for the Forward Link
The present document is concerned with the Physical Layer shown above. A general description of this layer follows
and requirements are given in clause 5.
4.1 Physical Layer
Several transport channels are provided in the Forward Link:
• rt-DCH: real time Dedicated Channel. It shall be reserved to flows that correspond to services under SS3.
• rt-CCH: real time Common Channel. It shall be reserved to unicast flows corresponding to SS1 and SS2 with
real-time requirements.
• nrt-CCH: non-real time Common Channel. It shall be reserved to unicast flows corresponding to SS1 and SS2
without real-time requirements.
• nrt-BCH: non-real time Broadcast Channel. It shall be reserved to broadcast/multicast flows.
These transport channels are used in practice to manage the multiplexing of various user data with different QoS
requirements. Given a number of transport channels, the resource management function will be in charge of
determining the share of the multiplex that corresponds to each of the logical channels to perform the multiplex. The
share of the multiplex among these logical channels is flexible to accommodate flows dynamically on demand.
These transport channels can be mapped onto 2 different physical channels:
• rt-PCH: real time Physical Channel.
• nrt-PCH: non-real time Physical Channel.
The transport channels are hence mapped into the corresponding physical layer channel according to the real-time
requirements of each transport channel and the capacity share amongst them.
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