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17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 11.2 IM-DP-REQUEST.confirm | |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 11.2.1 Function | The management service primitive IM-DP-REQUEST.confirm reports the result of a previous IM-DP- REQUEST.request. |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 11.2.2 Semantics | The parameters of the management service primitive IM-DP-REQUEST.confirm shall be as follows: • IM-DP-REQUEST.confirm ( DP-ID, CommandRef, ErrStatus ) Table 12: Parameters of the service primitive IM-DP-REQUEST.confirm Name ASN.1 type Valid range Description DP-ID INTEGER 0 to 255 Unique identifier of a DCC Profile. Co... |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 11.2.3 When generated | The management service primitive IM-DP-REQUEST.confirm shall be generated by the access-layer entity upon performance of a previous IM-DP-REQUEST.request. An undefined REQUEST shall be acknowledged with ErrStatus 5 "INVALID COMMAND/REQUEST NUMBER". ETSI ETSI TS 102 723-3 V1.1.1 (2012-11) 21 |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 11.2.4 Effect on receipt | On receipt of this primitive, the management entity shall evaluate ErrStatus and act accordingly. Details are outside the scope of the present document. |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12 IM-DP-GET | |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.1 IM-DP-GET.request | |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.1.1 Function | The management service primitive IM-DP-GET.request allows retrieving actual values of DCC Profile parameters by the access layer entity. |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.1.2 Semantics | The parameters of the management service primitive IM-DP-GET.request shall be as follows: • IM-DP-GET.request ( DP-ID, CommandRef, Sequence of I-Param.No ) Table 13: Parameters of the service primitive IM-DP-GET.request Name ASN.1 type Valid range Description DP-ID INTEGER 0 to 255 Unique identifier of a DCC Profile Co... |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.1.3 When generated | The management service primitive IM-DP-GET.request shall be generated by the access-layer entity when actual values of DCC Profile parameters have to be retrieved from the management entity. |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.1.4 Effect on receipt | On receipt of the management service primitive IM-DP-GET.request by the management entity, the values of the selected parameters shall be reported to the access-layer entity, if applicable. |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.2 IM-DP-GET.confirm | |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.2.1 Function | The management service primitive IM-DP-GET.confirm reports the result of a previous MI-GET.request. ETSI ETSI TS 102 723-3 V1.1.1 (2012-11) 22 |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.2.2 Semantics | The parameters of the management service primitive IM-DP-GET.confirm shall be as follows: • IM-DP-GET.confirm ( DP-ID, CommandRef, Sequence of D-Param ) Table 14: Parameters of the service primitive IM-DP-GET.confirm Name ASN.1 type Valid range Description DP-ID INTEGER 0 to 255 Unique identifier of a DCC Profile. The ... |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.2.3 When generated | The management service primitive IM-DP-GET.confirm shall be generated by the management entity upon performance of a previous IM-DP-GET.request. A request to get the value of a defined "write only" parameter shall be acknowledged with ErrStatus 7 "ACCESS VIOLATION". A request to get the value of an undefined parameter ... |
17530ee6ffd29012d5f57657d15c4958 | 102 723-3 | 12.2.4 Effect on receipt | The access-layer entity shall evaluate the parameter values and act accordingly. If any errors occurred in the processing of the related IM-DP-GET.request, the IM-DP-GET.confirm shall contain at least the entry Param.No = 255, where D- Param.Value shall explain the details of the error as specified in annex G. Further ... |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 1 Scope | The present document specifies "Implementation Conformance Statement" (ICS) proformas for functionality of the ITS-S access layer service access points MI-SAP and IN-SAP and related procedures as defined in ISO 21218 [1] in accordance with the relevant guidance given in ETSI EG 202 798 [i.2]. This proforma is intended ... |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 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 ar... |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 2.1 Normative references | The following referenced documents are necessary for the application of the present document. [1] ISO 21218:2013: "Intelligent Transport Systems - Communications access for land mobiles (CALM) - Access technology support". [2] ISO 24102-3:2013: "Intelligent Transport Systems - Communications access for land mobiles (CA... |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 2.2 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] ISO 21217:2014: "Intelligent Transport Systems - Communications access for land mobiles (CALM) - Architecture". [i.2] ETSI EG 202 798: "Intelligent Tr... |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 3 Definitions and abbreviations | |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 3.1 Definitions | For the purposes of the present document, the terms and definitions given in ISO 21218 [1], ISO 21217 [i.1], ISO 24102-3 [2], ISO 24102-4 [i.3], ETSI EG 202 798 [i.2] and ISO/IEC 9646-7 [3] apply. |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 3.2 Abbreviations | For the purposes of the present document, the abbreviations given in ISO 21218 [1], ISO 21217 [i.1], ISO 24102-3 [2], ISO 24102-4 [i.3], ETSI EG 202 798 [i.2] and ISO/IEC 9646-7 [3] apply. |
af2e2f63ff58484f3ae9d0066fe4a7a4 | 102 760-1 | 4 Conformance requirement concerning ICS | The actual ICS proforma to be filled in by a supplier shall be technically equivalent to the text of the ICS proforma given in the normative annexes of the present document, and shall preserve the numbering, naming and ordering of the proforma items. An ICS which conforms to the present document shall be a conforming I... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 1 Scope | The present document specifies: • the architectural approach to interconnect the various layers and entities of the ITS station reference architecture, • unique addressing schemes for entities in an ITS station, • station-local management communications, • common terms and definitions. |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 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 ar... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 2.1 Normative references | The following referenced documents are necessary for the application of the present document. [1] ETSI EN 302 665: "Intelligent Transport Systems (ITS); Communications Architecture". [2] ISO 21217: "Intelligent transport systems - Communications access for land mobiles (CALM) - Architecture". [3] ISO/DIS 21218: "Intell... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 2.2 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 TR 102 707: "Intelligent Transport Systems (ITS); ETSI object identifier tree; ITS domain". [i.2] ETSI TS 102 723-2: "Intelligent Transport Syste... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 3 Definitions and abbreviations | |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 3.1 Definitions | For the purposes of the present document, the terms and definitions given in [2] to [5] apply. |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 3.2 Abbreviations | For the purposes of the present document, the abbreviations given in [2] to [5] apply. ETSI ETSI TS 102 723-1 V1.1.1 (2012-11) 8 |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 4 Architecture of interfaces | The global architecture for communications in ITS specifies the ITS station reference architecture [1] and [2] presented in figure 1. Figure 1: ITS station reference architecture [1] and [2] This architecture view is based on the ISO / OSI layered communication model as detailed in [1] and [2]. Three protocol layers: •... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 5 Interface specifications | The general structure of the following service access points is specified in [4]: • MI, MN, MF • MS • SI, SN, SF The general structure of the following service access point is specified in [3]: • IN There is so far no general structure of the following service access point specified: • NF There is so far no general str... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 6 Common addressing scheme | |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 6.1 ITS station communication units | The ITS architecture specified in [1] and [2] supports a variety of different implementations of an ITS station, i.e. ranging from a simple single box solution up to complex set-ups with several units. Every unit contains an instance of the management entity presented in figure 1. Such a unit is referred to as "ITS Sta... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 6.2 Communication interfaces | An ITS-SCU contains one or more "Communication Interfaces" (CIs), i.e.: • for station-internal communication via the ITS station-internal network [1], [2] and [5]; • for communications between different instances of an ITS station [1] and [2]. Each CI may maintain relations: • in MAC broadcast mode with any other CI, i... |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 7 Station-internal management communication | Station-internal management communication, also referred to as "Inter ITS-SCU Communications" (IIC) or Inter-unit management communications (IUMC), may be applicable in case the functionality of an ITS station is implemented in several physical units. IIC may be implemented as specified in [5]. |
935d3ac465d6b819203909fb78bca814 | 102 723-1 | 8 Object identifiers | For the set of ITS standards from ETSI, [i.1] specifies the "Object Identifier" (OID) tree to the ETSI ITS domain. General objects shall use the root given by the ASN.1 OBJECT IDENTIFIER oidITS specified in the ASN.1 module ITSreg { itu-t(0) identified-organization(4) etsi(0) itsDomain(5) wg2(2) version1 (1)}. Addition... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 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 6 of the standard and concerns aspects of the air interface for the S-band Mobile Inter... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 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 referenced document (including any amendments) applies. Referenced documents which a... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 2.1 Normative references | The following referenced documents are necessary for the application of the present document. [1] ETSI EN 300 468: "Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems". [2] ETSI TS 102 721-1: "Satellite Earth Stations and Systems (SES); Air Interface for S-band Mobile Interactiv... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 2.2 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 EN 302 550 (all parts and sub-parts): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems". ETSI ETSI TS 102 721-6... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 3 Definitions and abbreviations | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 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: Th... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: ACK ACKnowledgement bslbf bit string, left bit first. BW Bandwidth CAC Call Admission Control CDMA Code Division Multiple Access CGC Complementary Ground Component CID Context Identifier CRC Cyclic Redundancy Check DAMA Dynamic Assignment Mult... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 4 General Description | The management of S-MIM resources concerns long term and short term aspects. The Control Plane is concerned with dynamic (short term) resource management with the associated signalling needed to manipulate communication channels. The clauses below deal with the Forward and Return Links separately. |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5 Forward link | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.1 Forward link Control Plane Protocol Stack | In the Control Plane, most of the system signalling is provided through signalling tables following DVB-SI format [1]). The way such signalling tables are transported over the FWD link and encapsulated in MPEG-TS, depends on the adopted technology. An informative annex explains how to carry S-MIM forward link signallin... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2 Forward link Signalling | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.1 Forward link signalling for SSA support | The signalling over the forward link for SSA support is organized into the following tables: SSA Configuration Table (SCT), SSA Access Table (SAT), SSA Dynamic Table (SDT). The following clauses show the organization of the different tables. |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.1.1 SSA Configuration Table (SCT) | This table is carried in one or more section (each section is in fact limited to 1 024 bytes) with each section having the format described in Table 5.1. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 11 Table 5.1: SSA Configuration Table The SCT table parameters are: • SI_private_section_header. See clause 5.2.4.1. • rl_carr... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.1.2 SSA Access Table (SAT) | This table is carried in one or more section (each section is in fact limited to 1 024 bytes) with each section having the format described in Table 5.4. Table 5.4: SSA Access Table Syntax No. of bits Information Mnemonic Reserved (see note) Information SSA_access_section(){ SI_private_section_header 64 - FL_EIRP 8 uim... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.1.3 SSA Dynamic Table (SDT) | This table is carried in one or more section (each section is in fact limited to 1 024 bytes) with each section having the format described in Table 5.6. The SDT table parameters are self-describing except for: • current_sat_noise. It is the current noise plus interference at the satellite transponder input expressed i... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.1.4 SSA Signalling Load | Table 5.7: Recommended table parameters Parameter Recommended Value SCT and SAT table transmit periodicity about 10 seconds. (range 3 seconds to 30 seconds). SDT transmit periodicity about 1 second. (range 0,5 second to 2 seconds). SCT minimum length 320 bits. (Assuming worst case of 5 MHz RL slot used by 16 carriers o... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2 Forward link signalling for QS-CDMA support | The signalling for QS-CDMA is organized into the following tables: QS-CDMA Configuration Table (QSCT), QS- CDMA Dynamic Table (QSDT), QS-CDMA Power Correction Table (QSPCT) and QS-CDMA Terminal Information Message (QSTIM) The assignment of PID to the tables shall consider the kind of information and its priority. That ... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.1 QS-CDMA Configuration Table (QSCT) | The syntax of QSCT is shown in Table 5.8. It shall be segmented in QS-CDMA Configuration sections using the syntax described in EN 300 468 [1]. Any sections forming part of a QSCT shall be transmitted in TS packets with a PID value assigned in the PMT. Table 5.8 defines the static configuration of the QS-CDMA subsystem... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.2 QS-CDMA Dynamic Table (QSDT) | The syntax of QSDT is shown in Table 5.11. It shall be segmented in QS-CDMA Dynamic sections using the syntax described in EN 300 468 [1]. Any sections forming part of a QSDT shall be transmitted in TS packets with a PID value assigned in the PMT. The QS-CDMA Configuration Table (QSDT) contains dynamic information rega... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.3 QS-CDMA Power Correction Table (QSPCT) | The syntax of QSPCT is shown in Table 5.12. It shall be segmented in QS-CDMA power corrections sections using the syntax described in EN 300 468 [1]. Any sections forming part of a QSPCT shall be transmitted in TS packets with a PID value assigned in the PMT. Table 5.12 defines the power correction that any terminal wi... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.4 QS-CDMA Terminal Information Message (QSTIM) | This message is sent by the Hub either to an individual terminal addressed its MAC address contained in the DSM- CC_private_section_header (unicast message) or broadcast to all terminals using a reserved broadcast MAC address. The selection of unicast or broadcast method of transmission depends on the nature of the inf... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5 Descriptor Coding | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.1 Descriptor identification | Table 5.15 lists the descriptors, available in the FWD link to provide support to the QS-CDMA sub system, defined within the present document giving their descriptor-tag values: Table 5.15: FLS QS-CDMA Descriptor Tags descriptor Tag value QS-CDMA Correction Message 0xB0 QS-CDMA RoHC Feedback Message 0xB1 QS-CDMA Capaci... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.2 QS-CDMA Correction Message | The correction Message descriptor defines a transmit parameter correction set for one terminal. It shall be as defined in Table 5.12 and shall be encapsulated in unicast QSTIM for terminals having allocated resources. This descriptor shall be mapped to the real time transport channel of the FWD link radio interface. ET... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.3 QS-CDMA RoHC Feedback Message | The QS-CDMA RoHC Feedback Message descriptor is used to send RoHC feedback messages to the terminal's side compressor. It shall be as defined in Table 5.12 and shall be encapsulated in unicast QSTIM for terminals having allocated resources. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 23 Table 5.18: QS-CDMA RoHC Feedback Me... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.4 QS-CDMA Capacity Allocation Hub Req | This descriptor is sent, attached to a QSTIM message, to a terminal whenever the Hub initiates the capacity allocation. Table 5.19: QS-CDMA Capacity Allocation Hub Req Syntax No. of bits Information Mnemonic Reserved (see note) Information qscdma_capacity_allocation_hub_ack () { descriptor_tag 8 uimsbf descriptor_lengt... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.5 QS-CDMA Capacity Allocation Ack | This descriptor is sent, attached to a QSTIM message, to a terminal that has requested some capacity allocation. For positive ACK, the Hub shall generate a QSTIM packet conveying this Capacity Allocation Ack as well as a QS-CDMA Correction Message as defined in clause 5.2.2.5.2. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) ... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.6 QS-CDMA Capacity Release Hub Req | This descriptor is sent, attached to a QSTIM message, to a terminal that has to release the allocated capacity. The Terminal shall release their allocated resources immediately. Table 5.23: QS-CDMA Capacity Release Hub Req Syntax No. of bits Information Mnemonic Reserved (see note) Information qscdma_capacity_allocatio... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.7 QS-CDMA Capacity Reallocation Hub Req | This descriptor is sent, attached to a QSTIM message, to a terminal that has requested some capacity allocation in order to inform and/or request some capacity reallocation. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 26 Table 5.24: QS-CDMA Capacity Reallocation Hub Req Syntax No. of bits Information Mnemonic Reserved (see... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.8 QS-CDMA Capacity Reallocation Ack | This descriptor is sent, attached to a QSTIM message, as an acknowledgement to a terminal that has requested some capacity reallocation. Table 5.25: QS-CDMA Capacity Allocation Ack Syntax No. of bits Information Mnemonic Reserved (see note) Information qscdma_capacity_reallocation_ack () { descriptor_tag 8 uimsbf descr... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.5.9 QS-CDMA Handover Ack | This descriptor is sent, attached to a QSTIM message, as an acknowledgement to a terminal that has requested a handover procedure. Table 5.26: QS-CDMA Handover Ack Syntax No. of bits Information Mnemonic Reserved (see note) Information qscdma_handover_ack () { descriptor_tag 8 uimsbf descriptor_length 8 uimsbf ack_code... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.6 Repetition Rates | All sections of the QSCT shall be transmitted often enough to allow newly activated terminals to acquire the necessary start-up state. We will assume that this table needs to be transmitted at least every 10 seconds. All sections of the QSDT shall be transmitted every second to keep the power control information for th... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.2.7 Signalling load | For the informative estimation of the QS-CDMA signalling load in the FLSS we will assume: • L is the number of frequency slots for a given return link spot. In the baseline, where the BW occupied by the QS-CDMA subsystem is 5 MHz, the value of L is 1. • P is the number of spots managed by the Hub. • M is the number of ... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.3 Forward link signalling for Link Layer support | The signalling over the forward link for link layer support is organized into the Link Layer Configuration Table (LLCT). Apart from broadcast signalling, there is also unicast signalling which will not be sent into DVB-SI tables: • Unequivocal Acknowledgements (uACK Mode). Unequivocal ACKs shall be sent in a dedicated ... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.3.1 Link Layer configuration Table (LLCT) | Table 5.28 is carried into one or more sections, being the length of each section limited to 1 024 bits. Each section will have the format shown in the following. Table 5.28: Link Layer configuration Table (LLCT) Syntax Number of bits Identifier Link_layer_configuration_section(){ SI_private_section_header 64 Location_... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.3.2 Unequivocal ACK | After receiving the Link Layer Map table (LLMT) terminals are aware of which PID is transporting unequivocal ACK in the FWD link. In this PID each MPEG-TS carries a concatenation of unequivocal ACKs. Unequivocal ACK have a fixed length of 51 bits. Therefore one MPEG-TS can carry up to 29 unequivocal ACKs. Unequivocal A... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.3.3 CRC based ACK | After receiving the Link Layer Map table (LLMT) terminals are aware of which PID is transporting CRC based ACK in the FWD link. The length of the CRC based ACK is variable and it is advertised to terminals in the Link Layer Configuration Table (LLCT). ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 31 Each MPEG-TS in the PID f... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.4 Standard section headers | The following standard headers have been tailored for forward link signalling use, and represent a specific subset of the more general formats specified in the DVB and ISO standards. |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.4.1 SI section header | Table 5.30: Standard SI section header Syntax No. of bits Mnemonic table_id 8 uimsbf section_syntax_indicator 1 bslbf reserved_for_future_use 1 bslbf reserved 2 bslbf section_length 12 uimsbf interactive_network_id 16 uimsbf reserved 2 bslbf version_number 5 uimsbf current_next_indicator 1 bslbf section_number 8 uimsbf... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.4.2 DSM-CC private section header | Table 5.32: Standard DSM-CC private section header Syntax No. of bits Mnemonic table_id 8 uimsbf section_syntax_indicator 1 bslbf private_indicator 1 bslbf reserved 2 bslbf section_length 12 uimsbf MAC_address_6 8 uimsbf MAC_address_5 8 uimsbf reserved 2 bslbf payload_scrambling_control 2 bslbf address_scrambling_contr... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 5.2.5 SSA Signalling Considerations for CGC | FWD CGC clusters will operate in SFN mode, meaning that all repeaters within the cluster will transmit in the same frequency slot. These clusters will transmit up to two different multiplexes in the FWD link. The first multiplex is a replica of the content distributed by the satellite FWD radio interface; if required, ... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6 Return link | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.1 Return link Control Plane Protocol Stacks | In the Control Plane, the signalling is carried by RLE, as shown in Figure 6.1 and Figure 6.2, indicating in the RLE header that the payload corresponds to signalling information rather than to user data. In the case of the RTN link, the authentication and CAC/DAMA signalling is also carried directly on RLE, as RLE can... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2 Return link Signalling | As described in TS 102 721-3 [3] and TS 102 721-4 [4], each return link air interface has specific resource management: 1) DAMA-like resource management for QS-CDMA. 2) load control techniques for the random access of SSA. Hence only the QS-CDMA link employs signalling and this is described below. The QS-CDMA signallin... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.1 QS-CDMA Signalling Unit | The structure of the signalling information conveyed through the QS-CDMA return link subsystem is shown in Table 6.1. This structure is the equivalent to the QSTIM wrapper that is used in the forward link, see clause 5.2.2.5. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 35 Table 6.1: QS-CDMA Signalling Unit Syntax No. of bi... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2 Descriptor Coding | |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.1 Descriptor identification | Table 6.2 lists the descriptors, available in the FWD link radio interface to provide support to the QS-CDMA sub system, defined within the present document giving their descriptor-tag values. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 36 Table 6.2: QS-CDMA Descriptor Tags descriptor Tag value QS-CDMA Correction Message 0... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.2 QS-CDMA Logon | This descriptor is sent, within a QS-CDMA Signalling Unit as defined in clause 6.2.1, by a terminal in order to logon the network. This descriptor shall always be mapped to the RACH where the MAC address (IMSI/TMSI) is located in the physical header, see TS 102 721-4 [4], so that the Hub could identify the terminal. Ta... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.3 QS-CDMA Capacity Allocation Req | This descriptor is sent, within a QS-CDMA Signalling Unit as defined in clause 6.2.1, by a terminal that wants to grant system resources. This descriptor shall always be mapped to the RACH where the MAC address (IMSI/TMSI) is located in the physical header (see TS 102 721-5 [5]) so that the Hub could identify the termi... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.4 QS-CDMA Capacity Release Req | This descriptor is sent, within a QS-CDMA Signalling Unit as defined in clause 6.2.1, by a terminal in case it wants to release their allocated resources. This descriptor shall always be mapped to the QS-CDMA as it is assumed that resources are already allocated. Table 6.6: QS-CDMA Capacity Release Request Syntax No. o... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.5 QS-CDMA Capacity Reallocation Req | This descriptor is sent, within a QS-CDMA Signalling Unit as defined in clause 6.2.1, by a terminal in case it wants to modify the already allocated bandwidth. This descriptor shall always be mapped to the QS-CDMA as it is assumed that resources are already allocated. ETSI ETSI TS 102 721-6 V1.2.1 (2013-08) 39 Table 6.... |
a1261b91bd8afbd33d284c45c73c4da8 | 102 721-6 | 6.2.2.6 QS-CDMA Handover Req | This descriptor is sent, within a QS-CDMA Signalling Unit as defined in clause 6.2.1, by a terminal in case it detects the requirement for a handover procedure. This descriptor shall always be mapped to the QS-CDMA as it is assumed that resources are already allocated. Table 6.8: QS-CDMA Handover Request Syntax No. of ... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 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 5 of a multi-part deliverable and concerns aspects of the air interface for the S-band... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 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 referenced document (including any amendments) applies. Referenced documents which a... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 2.1 Normative references | The following referenced documents are necessary for the application of the present document. [1] ETSI EN 301 192: "Digital Video Broadcasting (DVB); DVB specification for data broadcasting". [2] ETSI TS 102 721-3: "Satellite Earth Stations and Systems (SES); Air Interface for S-band Mobile Interactive Multimedia (S-MI... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 2.2 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 102 611-1: "Digital Video Broadcasting (DVB); IP Datacast: Implementation Guidelines for Mobility; Part 1: IP Datacast over DVB-H". [i.2] ETSI... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 3 Definitions and abbreviations | |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 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: Th... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: 3G Third generation mobile services, 3GPP Third Generation Partnership Project ACK Acknowledgement ALPDU Addressed Link Protocol Data Unit ARQ Automatic Repeat reQuest AuC Authentication Centre AUTN Authentication Token BCC Bidirectional Compr... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 4 General Description | The S-MIM Link Layer provides a number of functionalities that will allow transport of IP traffic of different types (broadcast, messaging, bidirectional traffic) over the radio interfaces of the S-MIM system. The Link Layer implements the following functions: • Header Compression to reduce the overhead transmitted ove... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 4.1 Forward Link | The detailed protocol stack for the S-MIM link and physical layers for access to SS1, SS2 and SS3 in the Forward Link is depicted in Figure 4.1. USER PLANE MANAGEMENT PLANE CONTROL PLANE Coding, Modulation & Transmission Header Compression Encryption (LL) MPE Encapsulation & Addressing PHY Link Layer nrt-CCH UCC BCC EC... |
3d14b790ab1d8cfcab6b3435fd02e146 | 102 721-5 | 4.1.1 Encryption Sub-layers | The encryption functions are split in two sublayers: at IP and at MAC layers to provide security in the access to the S-MIM communications system. In practice, hub and terminals will negotiate at which level encryption is applied (this will depend on the capabilities of the communication peers) and upon successful nego... |
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