ETSI TS 102 744-3-7 V1.1.1 (2015-10)

ETSI TS 102 744-3-7 V1.1.1 (2015-10)






TECHNICAL SPECIFICATION
Satellite Earth Stations and Systems (SES);
Family SL Satellite Radio Interface (Release 1);
Part 3: Control Plane and User Plane Specifications;
Sub-part 7: NAS Layer Interface Extensions
for MBMS Services

�

---------------------- Page: 1 ----------------------
2 ETSI TS 102 744-3-7 V1.1.1 (2015-10)



Reference
DTS/SES-00299-3-7
Keywords
3GPP, GPRS, GSM, GSO, interface, MSS, radio,
satellite, TDM, TDMA, UMTS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2015.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Symbols and abbreviations . 7
3.1 Symbols . 7
3.2 Abbreviations . 7
4 Introduction . 7
4.1 Non-Access Stratum Layer. 7
4.2 Conventions used in the present document . 8
4.2.1 Presentation. 8
4.2.2 "Reserved" Fields and Values . 9
4.2.3 Boolean Variables . 9
4.2.4 ASN.1 Encoding Rules . 9
5 NAS Layer Interface . 9
5.1 NAS layer use of AL service access points . 9
5.2 NAS Layer MBMS Service Management Messages . 9
6 NAS Layer Protocol Data Units . 10
6.1 General NAS PDU Structure . 10
6.1.0 General . 10
6.1.1 NAS PDU Header Common Elements . 11
6.1.1.1 TransactionIdentifier (TI) . 11
6.1.1.2 ProtocolDiscriminator . 11
6.1.1.3 NasMessageType . 12
6.2 Format of standard information elements . 12
6.3 NAS MBMS Service Management Messages . 13
6.3.1 ActivatePDPContextRequest . 13
6.3.1.0 General . 13
6.3.1.1 nsapi (Network Service Access Point Identifier) . 14
6.3.1.2 requested-llcsapi . 14
6.3.1.3 requested-pdp-address (PDPAddress) . 14
6.3.1.4 apn (Access Point Name) . 15
6.3.1.5 requested-qos (QualityOfService) . 15
6.3.2 ActivatePDPContextAccept . 15
6.3.2.0 General . 15
6.3.2.1 negotiated-llc-sapi . 16
6.3.3 ActivatePDPContextReject . 16
6.3.3.0 General . 16
6.3.3.1 SMCause . 17
6.3.4 ActivateSecondaryContextRequest . 17
6.3.4.0 General . 17
6.3.4.1 nsapi (Network Service Access Point Identifier) . 18
6.3.4.2 requested-llcsapi . 18
6.3.4.3 linked-ti (Linked TI) . 18
6.3.4.4 traffic-flow-template (TFT). 18
6.3.4.5 requested-qos (QualityOfService) . 18
6.3.5 ActivateSecondaryContextAccept . 19
6.3.6 ActivateSecondaryContextReject . 20
6.3.6.0 General . 20
ETSI

---------------------- Page: 3 ----------------------
4 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
6.3.6.1 SMCause . 20
6.3.7 DeactivatePDPContextRequest . 20
6.3.7.0 General . 20
6.3.7.1 tear-down-indicator . 21
6.3.8 DeactivatePDPContextAccept . 21
6.4 ActivateMBMSContextRequest . 22
6.5 ActivateMBMSContextAccept . 23
6.6 ActivateMBMSContextReject . 24
6.7 RequestMBMSContextActivation . 25
6.8 RequestMBMSContextActivationReject. 26
7 Information Elements Coding . 27
7.1 Access Point Na me . 27
7.2 Network service access point identifier (NSAPI) . 27
7.3 LLC SAPI . 27
7.4 Protocol configuration options . 27
7.4.0 General . 27
7.4.1 UE supporting ARP proxy functionality . 28
7.4.2 UE Supporting PPP (or PPPoE) interface . 28
7.5 Packet Data Protocol Address . 29
7.5.0 General . 29
7.5.1 pdp-type-organisation . 29
7.5.2 pdp-type-number . 29
7.5.3 PDPAddressInfo . 29
7.6 Quality of Service . 29
7.7 Linked TI . 31
7.8 Tear Down Indicator . 31
7.9 Packet Flow Identifier . 32
7.10 Traffic Flow Template . 32
7.11 TMGI . 34
7.12 MBMS Bearer capabilities . 35
7.13 MBMS protocol configuration options. 36
7.14 SM Cause . 37
Annex A (normative): ASN.1 . 38
Annex B (informative): Example Configure-Request for Dynamic Address allocation . 39
History . 41

ETSI

---------------------- Page: 4 ----------------------
5 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
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 3, sub-part 7 of a multi-part deliverable. Full details of the entire series can be found in
ETSI TS 102 744-1-1 [6].
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
This multi-part deliverable (Release 1) defines a satellite radio interface that provides UMTS services to users of mobile
terminals via geostationary (GEO) satellites in the frequency range 1 518,000 MHz to 1 559,000 MHz (downlink) and
1 626,500 MHz to 1 660,500 MHz and 1 668,000 MHz to 1 675,000 MHz (uplink).
ETSI

---------------------- Page: 5 ----------------------
6 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
1 Scope
The present document defines the extension to the Non-Access Stratum (NAS) Layer peer-to-peer interface (defined in
ETSI TS 124 007 [1] and ETSI TS 124 008 [2]) of the Family SL satellite radio interface between the Radio Network
Controller (RNC) and the User Equipment (UE) used in the satellite network, that is required in order to support MBMS
services.
2 References
2.1 Normative 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.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 124 007: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); Mobile radio interface signalling layer 3; General Aspects
(3GPP TS 24.007 Release 4)".
[2] ETSI TS 124 008: "Digital cellular telecommunications system (Phase 2+); Universal Mobile
Telecommunications System (UMTS); Mobile radio interface Layer 3 specification; Core network
protocols; Stage 3 (3GPP TS 24.008 Release 4)".
[3] ETSI TS 123 003: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); Numbering, Addressing and Identification
(3GPP TS 23.003 Release 4)".
[4] IETF RFC 1661 (1994): "The Point-to-Point Protocol (PPP)".
[5] IETF RFC 1332 (1992): "The PPP Internet Protocol Control Protocol (IPCP)".
[6] ETSI TS 102 744-1-1: "Satellite Earth Stations and Systems (SES); Family SL Satellite Radio
Interface (Release 1); Part 1: General Specifications; Sub-part 1: Services and Architectures".
[7] ETSI TS 102 744-1-4: "Satellite Earth Stations and Systems (SES); Family SL Satellite Radio
Interface (Release 1); Part 1: General Specifications; Sub-part 4: Applicable External
Specifications, Symbols and Abbreviations".
[8] ETSI TS 102 744-3-1: "Satellite Earth Stations and Systems (SES); Family SL Satellite Radio
Interface (Release 1); Part 3: Control Plane and User Plane Specifications; Sub-part 1: Bearer
Control Layer Interface".
[9] ETSI TS 102 744-3-5: "Satellite Earth Stations and Systems (SES); Family SL Satellite Radio
Interface (Release 1); Part 3: Control Plane and User Plane Specifications; Sub-part 5: Adaptation
Layer Interface".
[10] ETSI TS 102 744-3-6: "Satellite Earth Stations and Systems (SES); Family SL Satellite Radio
Interface (Release 1); Part 3: Control Plane and User Plane Specifications; Sub-part 6: Adaptation
Layer Operation".
ETSI

---------------------- Page: 6 ----------------------
7 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
2.2 Informative 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.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
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] 3GPP TR 29.846: "3rd Generation Partnership Project (3GPP); Technical Specification Group
Core Networks; Multimedia Broadcast/Multicast Service (MBMS); CN1 procedure description
(Release 4)".
3 Symbols and abbreviations
3.1 Symbols
For the purposes of the present document, the symbols in clause 3 of ETSI TS 102 744-1-4 [7] apply.
3.2 Abbreviations
For the purposes of the present document, the abbreviations in clause 3 of ETSI TS 102 744-1-4 [7] apply.
4 Introduction
4.1 Non-Access Stratum Layer
The Non-Access Stratum (NAS) Layer provides support to the Internet Protocol (IP) Layer via the User Plane Handler
(UPH), and uses the services provided by the Adaptation Layer (AL).
The IP Layer provides support to routing protocols, such as the Internet Group Management Protocol (IGMP) used by
IPv4 systems to report their IP multicast group memberships to neighbouring multicast routers. The IGMP protocol (or
PIM-SM) is used to trigger the supported multicast services. Session management (SM) messages are used to instantiate
the MBMS contexts. The Adaptation Layer interface and operation is described in ETSI TS 102 744-3-5 [9] and
ETSI TS 102 744-3-6 [10] respectively.
The present document defines the extension to the NAS Layer peer-to-peer interface (defined in ETSI TS 124 007 [1]
and ETSI TS 124 008 [2]) between the RNC and the UE that is required in order to support MBMS services, as shown
in Figure 4.1.
All of the messages defined in the present document to replace functionality in 3GPP are Session Management
messages. All other messages not specified in the present document but that appear in 3GPP Release 4 should still be
supported.
ETSI

---------------------- Page: 7 ----------------------
8 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
IP
IP
UPH UPH
BMSM BMSM
RABM/
MRABM
BMM BMM
Non-Access Stratum
RE LA Y
AL AL RANAP RANAP
Lower Lower
Lower Layers Lower Layers
Layers Layers
Access Stratum
UE RNC CN
U I
sl u

Figure 4.1: Satellite Network Higher Layers (NAS and IP)
The NAS Layer is responsible for the following:
• Multicast Radio Access Bearer Manager (MRABM): is responsible for controlling establishment,
modification and termination of Access Stratum Unicast Radio Access Bearers (RABs) and Multicast Radio
Access Bearers (MRABs) on the Iu-Broadcast Multicast (BM) interface towards the RAN.
• Broadcast/Multicast Mobility Management (BMM): is responsible for mobility management for a UE
which is operating with the BM domain. The BMM entity replicates the functionality of the GPRS Mobility
Management (GMM) entity towards the Broadcast Multicast Service Node (BMSN).
• Broadcast/Multicast Session Management (BMSM): is responsible in the for NAS signalling towards the
BM domain, replicating the functionality of the Session Management (SM) entity for establishing and
maintaining the Radio Access Bearer (RAB) endpoints for BM domain traffic handling. Within the BMSM
entity, the state of each Packet Data Protocol (PDP) Context, and the association with activated MBMS
Contexts is maintained.
It should be noted that the BMSM entity is the only entity for which a modification to the associated Packet Switched
domain NAS Layer behaviour and peer-peer interface is required, the extensions to this interface being specified within
the present document.
4.2 Conventions used in the present document
4.2.1 Presentation
The following conventions are applied throughout the present document:
• In the ASN.1, variable names are always in lower case letters with hyphenation used to improve readability
(e.g. message-type). Data Types in the ASN.1 always start with an upper case letter and may contain
additional upper case letters to improve readability (e.g. MessageType).
• In the explanatory text these variables are referred to in italics (.e.g. message-type) while Data Types are
shown in Helvetica typeface (e.g. BCnPDU).
ETSI

---------------------- Page: 8 ----------------------
9 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
The layout of the data structures defined in the ASN.1 is also shown in a graphical representation. In general, the
variable names are presented in the same way they are presented in the ASN.1, with the following exceptions:
• insufficient space does not allow the complete variable name to be presented and is therefore abbreviated;
• only one particular value can be assigned to a variable in the particular structure that is presented. In this case
the variable is replaced by the appropriate numerical value;
• additional information may be added in brackets for explanatory reasons.
4.2.2 "Reserved" Fields and Values
Fields shown as Reserved BITSTRING (.) in the ASN.1 structures shall be set to zero by the sender and shall be
ignored by the receiver.
Values not allocated in distinguished value lists shall not be used by the sender and shall be ignored by the receiver.
NOTE: Distinguished Value Lists of type Integer are being used instead of the ENUMERATED data type, where
the allocated number range is larger than the number of items to be enumerated.
4.2.3 Boolean Variables
BOOLEAN variables shall be encoded as follows:
TRUE ::= 1
FALSE ::= 0

4.2.4 ASN.1 Encoding Rules
The ASN.1 presentation provided in the present document for this interface specification is normative. The encoding
rules used for this interface specification are provided in clause 4.4.4 of ETSI TS 102 744-3-1 [8].
5 NAS Layer Interface
5.1 NAS layer use of AL service access points
Protocol entities in the NAS Layer use message transport services provided by the Adaptation Layer to communicate
with their peers through two Service Access Points (SAPs):
• MMAL-SAP: MM to Adaptation Layer Service Access Point (CS domain)
• GMMAL-SAP: GMM to Adaptation Layer Service Access Point (PS domain)
• BMMAL-SAP: BMM to Adaptation Layer Service Access Point (BM domain)
These service access points are described in more detail in ETSI TS 102 744-3-6 [10].
5.2 NAS Layer MBMS Service Management Messages
The NAS Layer MBMS Service Management messages shown in Table 5.1 are supported between the UE and BMSN.
The interfaces between the UE and the BMSN are shown in Figure 7.1 in ETSI TS 102 744-1-1 [6].
ETSI

---------------------- Page: 9 ----------------------
10 ETSI TS 102 744-3-7 V1.1.1 (2015-10)
Table 5.1: Multicast NAS messages
NAS Message Direction Key Parameters
Activate_PDPContext_Request UEBMSN TI, Requested NSAPI, Requested QoS, Requested
PDPAddress, APN, Protocol Config Options
Activate_PDPContext_Accept UEBMSN TI, Negotiated QoS, PDPAddress, Protocol Config Options
Activate_PDPContext_Reject UEBMSN TI, SMCause
Deactivate_PDPContext_Request UEBMSN TI, SMCause
UEBMSN
Deactivate_PDPContext_Accept UEBMSN TI
UEBMSN
Request_MBMSContext_Activation UEBMSN TI, Linked NSAPI, Offered MulticastAddress, APN, TFT,
TMGI
Request_MBMSContext_Activation_ UEBMSN TI, SMCause
Reject
Activate_MBMSContext_Request UEBMSN TI, Requested MBMS NSAPI, Supported MBMS Bearer
Capabilities, Requested Multicast address, APN, Linked TI,
TMGI, MBMS Protocol Config Options
Activate_MBMSContext_Accept UEBMSN TI, TMGI
Activate_MBMSContext_Reject UEBMSN TI, SMCause
Activate_SecPDPContext_Request UEBMSN TI, Requested NSAPI, Requested QoS, Linked TI, TFT,
Protocol Config Options
Activate_SecPDPContext_ Accept UEBMSN TI, Negotiated QoS,
Protocol Config Options
Activate_SecPDPContext_ Reject UEBMSN TI, SMCause

6 NAS Layer Protocol Data
...