1、ETSI TS 101 658 1.2.1 (2000-04) Technical Specification Terrestrial Trunked Radio (TETRA); Digital Advanced Wireless Service (DAWS); Logical Link Control (LLC) Service Description 2 ETSI TS 1 O1 658 V1.2.1 (2000-04) Reference RTS/TETRA-04046 Keywords PDO, data, radio, TETRA ETSI Postal address F-O69
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3、ta et.si.fr Individual copies of this ETSI deliverable can be downloaded from http:/www.etsi.org If you find errors in the present document, send your comment to: editorQetsi.fr Important notice This ETSI deliverable may be made available in more than one electronic version or in print. In any case
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5、tion No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI TS 1 O1 658 V1.2.1 (2000-04) Contents Intellectual Prop
6、erty Rights 5 Foreword 5 Introduction 5 1 2 3 3.1 3.2 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 5 5.1 5.2 5.3 5.4 6 7 7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 7.1.7 7.1.8 7.1.9 7.1.10 7.1.11 7.1.12 7.1.13 7.1.14 7.1.15 7.1.16 7.1.17 7.1.18 7.1.19 7.1.20 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 Scope 7 R
7、eferences 7 Definitions and abbreviations 7 Definitions 7 Abbreviations . 8 Registration Services 8 Base station registration . 9 Mobile station registration 9 Cell selection 9 Registration . 9 Service interruption . 10 Hand-over . 10 De-registration 10 Transport Services 11 Link layer address resol
8、ution 11 Packet classification . 11 Traffic measurement, policing, and shaping . 11 Packet segmentation and reassembly 11 Admission Control Services . 12 Service Primitives 12 Primitive Definitions 12 LLC-transfer-request . 12 LLC-transfer-confirm 12 LLC-transfer-indication . 13 LLC-create-protocolr
9、equest 13 LLC-delete-protocolrequest 13 LLC-configure-schedulingrequest . 14 LLC-configure-scheduling-confirm 14 LLC-configure-routingrequest . 14 LLC-configure-routing-confirm 15 LLC-queue-empty-notify-request . 15 LLC-queue-empty-notify-confirm 15 LLCredirect-routing-request 15 LLCredirect-routing
10、-confirm . 16 LLC-servicerequest 16 LLC-serviceconfirm . 16 LLC-service-indication 17 configure-routing-result 17 configurescheduling-result . 17 createjrotocol-result 17 deletejrotocol-result 17 destination-IP-addr 17 LLC-create-protocol-confirm . 13 LLC-delete-protocol-confirm . 14 LLC-hunt-reques
11、t 16 LLC-hunt-confirm . 16 Parameter Definitions . 17 basestation-ID 17 ETSI 4 ETSI TS 1 O1 658 V1.2.1 (2000-04) 7.2.7 7.2.8 7.2.9 7.2.10 7.2.1 1 7.2.12 7.2.13 7.2.14 7.2.15 7.2.16 7.2.17 7.2.18 hunt-result 18 new-routingstate 18 newschedulingstate . 18 newservicestate . 18 NPDU . 18 protocol-instan
12、ce-ID . 18 protocolparameters . 18 protocol-type 18 redirect-routing-result . 19 queue-empty-result 19 service-result 19 transfer-receipt-ack . 19 Annex A (informative): Hand-over Using Mobile IP 20 A.l Inter-network hand-over . 20 A.2 Intra-network hand-over . 20 Annex B (informative): Reservations
13、 Using RSVP . 21 Reservation creation procedure 21 Reservation deletion procedure 21 Reservation modification procedure 21 Resource increase request . 22 Resource decrease request 22 Bibliography . 26 History 27 B . 1 B . 2 B . 3 B.3.1 B.3.2 Annex C (informative): The IPv4 to IPv6 Transition . 23 ET
14、SI 5 ETSI TS 1 O1 658 V1.2.1 (2000-04) 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
15、SR O00 3 14: “Intellectual Propero Rights (IPRs); Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR Policy, no i
16、nvestigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in SR O00 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 Specifi
17、cation (TS) has been produced by ETSI Project Terrestrial Trunked Radio (TETRA). The present document is one of the three documents specifying the requirements for TETRA Digital Advanced Wireless Service (DAWS): - TS 101 658: Logical Link Control (LLC) Service Description; - - TS 101 659: Medium Acc
18、ess Control (MAC) Service Description; TS 101 660: Physical Layer (PHY) Service Description. An overview of the requirements for DAWS can be found in TR 101 156 i. Introduction The DAWS protocol architecture is provided in i. The Logical Link Controller (LLC) provides services to the network layer (
19、NWK) and requests services from the Medium Access Controller (MAC) 2. The present document provides the requirements the LLC service shall satisfy to operate successfully within a Digital Advanced Wireless Service (DAWS) network. As described in i, LLC functionality may be distributed across several
20、 DAWS nodes. The following prefixes will be used to specify the scope of a requirement: LLC GW-LLC BR-LLC BS-LLC the requirement applies to the LLC in general the requirement applies to Gateway functionality the requirement applies to Bridge functionality the requirement applies to Base Station func
21、tionality MS-LLC the requirement applies to Mobile Station functionality Figure 1 shows the architecture of the LLC for the minimum complexity DAWS network described in i. The network layer (NWK) accesses LLC services via service access points (SAPS) A and B. LLC-SAP-A is for data transfer service p
22、rimitives and LLC-SAP-B is for local control and status service primitives, including RSVP3 operations. ETSI 6 ETSI TS 1 O1 658 V1.2.1 (2000-04) NWK LAYER LLCSAP-A LLCSAP-B SERVICE (LLC-TPT) * REGISTRATION SERVICE (LLC-REG) - MAC-SAP-A - MAC-SAP-B MAC LAYER Figure 1 : DAWS LLC Architecture The LLC a
23、ccesses MAC services via service access points A and B. MAC-SAP-A is for data transfer service primitives and MAC-SAPB is for local control and status service primitives. Requirements for the registration, admission control, and transport services are provided in the clauses 4, 5, and 6.Service prim
24、itives and associated service data units are provided in clause 7. Annexes A and B provide additional information on interworking Mobile IP and RSVP with the LLC. Annex C discusses the IPv4 to IPv6 transition. ETSI 7 ETSI TS 1 O1 658 V1.2.1 (2000-04) 1 Scope The present document specifies the servic
25、e requirements for a Digital Advanced Wireless Service (DAWS) Logical Link Control (LLC) layer compatible with IPv4 and IPv6 on the network layer. The LLC service requirements for other network layer protocols will be described in a separate document dedicated to each protocol. The present document
26、provides a conceptual architecture useful for specifying requirements but is not intended to imply a particular implementation. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific
27、 (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, subsequent revisions do apply. A non-specific reference to an ETS shall also be taken to refer to later versions publ
28、ished as an EN with the same number. il ETSI TR 10 1 156: “Terrestrial Trunked Radio (TETRA); Technical requirements specification for Digital Advanced Wireless Service (DAWS)“. ETSI TS 101 659: “Terrestrial Trunked Radio (TETRA); Digital Advanced Wireless Service (DAWS); Medium Access Control (MAC)
29、 service description“. RFC 2205 (1997): “Resource Reservation Protocol (RSVP) - Version 1 Functional Specification“. RFC 2215 (1997): “General Characterization Parameters for Integrated Service Network Elements“. Pl 31 41 Pl RFC 221 1 (1997): “Specification of the Controlled-Load Network Element Ser
30、vice“. 61 VI SI PI RFC 11 12 (1989): “Host Extensions for IP Multicasting“. RFC 791 (1981): “Internet protocol darpa internet program protocol specification“ RFC 2210 (1997): “The Use of RSVP with IETF Integrated Services“. RFC 2185 (1997): “Routing Aspects Of IPv6 Transition“. 3 3.1 Definitions and
31、 abbreviations Definitions For the purposes of the present document, the following terms and definitions apply: base station: piece of equipment providing simultaneous, bi-directional network access to mobile stations downlink general term meaning “from the base station to the mobile station“ flow:
32、sequence of data packets originating from a single source and addressed to the same destination for which special handling by intervening routers is desired mobile station: piece of equipment able to create and consume data but only having network access via a base station ETSI 8 ETSI TS 1 O1 658 V1
33、.2.1 (2000-04) protocol data unit: set of parameters and/or data passed from peer to peer by a protocol primitive protocol instance: two protocol processes which exchange messages in order to transfer data from one protocol process to the other protocol primitive: request, response, or informative m
34、essage sent from peer to peer protocol process: entity created to manage one end of a peer-to-peer protocol. For unidirectional data flows, a protocol process can be further described as either a sender process or a receiver process service data unit: set of parameters and/or data passed between adj
35、acent layers by a service primitive service primitive: request, response, or informative message sent between adjacent layers sub-protocol: portion of a protocol performing a clearly identifiable operation uplink: general term meaning “from the mobile station to the base station“ 3.2 Abbreviations F
36、or the purposes of the present document, the following abbreviations apply: ACK BEP BS DAWS DL GW IP LLC LLC-ADM LLC-REG LLC-TPT LPDU MAC MS MSH MSI NPDU NWK PDU QOS RSVP SAP SDU sw UNACK UL Acknowledged Best-Effort Plus Base Station Digital Advanced Wireless Services Downlink Gateway Internet Proto
37、col Logical Link Controller LLC Admission Control Service LLC Registration Service LLC Transport Service LLC Protocol Data Unit Medium Access Controller Mobile Station Mobile Station Handle Mobile Station Identifier NWK Protocol Data Unit Network Protocol Data Unit Quality Of Service Resource Reserv
38、ation Protocol Service Access Point Service Data Unit Switch Unacknowledged Uplink 4 Registration Services The LLC registration service (LLC-REG) supports cell selection, registration, de-registration, and hand-over operations. Statements made in this clause regarding network level registration are
39、for information only. ETSI 9 ETSI TS 1 O1 658 V1.2.1 (2000-04) 4.1 Base station registration Every DAWS GW is assigned a globally unique identifier called the GWI. The GWI shall be assigned when the GW is manufactured and shall not be dynamically alterable. The GW address space shall be administered
40、 by an industry body to prevent GWI address duplication among manufacturers. Every DAWS BS is assigned a globally unique identifier called the BSI. The BSI shall be assigned when the BS is manufactured and shall not be dynamically alterable. The BSI address space shall be administered by an industry
41、 body to prevent BSI address duplication among manufacturers. Before a DAWS BS can provide service to MS, the BS shall register with a DAWS GW. During the registration process, the GW delivers its GWI to the BS. The BS broadcasts the GWI and its BSI in a system information message to all MS within t
42、he serving cell. A MS uses the broadcast GWI during hand-over to differentiate between intra-network and inter-network hand-overs. 4.2 Mobile station registration 4.2.1 Cell selection When an MS is powered on, MS-LLC-REG shall issue a request to MSMAC-REG to do a scan of available cells and report t
43、he results. MS-LLC-REG shall select the best cell and instruct MSMAC-REG to camp on the cell. MS-LLC-TPT is then able to exchange PDUs with BS-LLC-TPT using the unacknowledged protocols. 4.2.2 Registration After cell selection, MS-LLC automatically registers with BS-LLC and GW-LLC. MS-LLC registrati
44、on with a serving BS and GW involves the following steps: MS-LLC sends a registration request to BS-LLC, providing its MSI; BS-LLC forwards the MS registration request toward the GW via the next upstream bridge; BR-LLC adds the binding (MSI, output-interface) to its routing table, and forwards the M
45、S registration request toward the GW. For simplicity, this example will assume only one upstream bridge, so the next node will be the GW; GW-LLC adds the binding (MSI, output-interface) to its routing table, and sends a MS registration response toward the serving BS; BR-LLC forwards the MS registrat
46、ion response towards the serving BS; BS-LLC generates a MSH for the MS and adds the binding (MSI, MSH) to its registration table. BS-LLC sends a registration response message containing the MSH to MS-LLC; MS-LLC stores its assigned MSH for future uplink and downlink signalling with the BS; MS-LLC se
47、nds a service indication message to MSNWK indicating that LLC registration is complete, providing the GWI of the serving GW and BSI of the serving BS. ETSI 10 ETSI TS 1 O1 658 V1.2.1 (2000-04) After LLC registration is complete, MSNWK will usually perform network level registration with the GW in or
48、der to receive a care-of address for network level signalling. After obtaining a care-of address, downlink packet routing through the DAWS access network thus involves the following routing operations: i) GW-LLC: MS care-of address to MSI; 2) GW-LLC: MSI to output interface; 3) BR-LLC: MSI to output
49、 interface (multiple intermediate bridges possible); 4) BS-LLC: MSI to MSH; 5) BS-LLC: MSH to Protocol Instance ID. 4.2.3 De-registration A registration-related state created in a DAWS node has an associated de-registration timer. If the de-registration timer expires then the registration state is deleted. The following registration states have de-registration timers: i) GW-LLC: the (care-of address, MSI) binding; 2) GW-LLC: the (MSI, output-interface) binding; 3) BR-LLC: the (MSI, output-interface) binding; 4) BS-LLC: the (MSI, MSH) binding; 5) MS-LLC: the MSH. A de-
