1、ETSI TS 102 1 17-2 1.1.1 (2002-10) Technical Specificafion Broadband Radio Access Networks (BRAN); HIPERACCESS; Packet based Convergence Layer; Part 2: Ethernet Service Specific Convergence Sublayer 2 ETSI TS 102 117-2 V1.l.l (2002-10) Reference DTSIBRAN-0034004-2 Keywords access, broadband, HIPERAC
2、CESS, radio ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice Individual copies of the present
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6、o reproduction in all media. O European Telecommunications Standards Institute 2002. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of
7、 its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI 3 ETSI TS 102 117-2 V1.l.l (2002-10) Contents Intellectual Property Rights 4 Foreword . 4 1 Scope 5 2 References 5 3 Definitions and abbreviations . 5 3.1 Definitions
8、. 3.2 Abbreviations 4 4.1 4.3 . 5 . 5 Convergence Layer architecture . 6 General . 6 4.2 Ethernet Service Specific Convergence Sublayer architecture 7 . 7 History 9 ETSI 4 ETSI TS 102 117-2 V1.l.l (2002-10) Intellectual Property Rights IPRs essential or potentially essential to the present document
9、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 O00 314: “Intellectual Property Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI s
10、tandards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). 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 ETS
11、I SR O00 3 14 (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 Project Broadband Radio Access Networks (BRAN). It defies the functionality required for the support of p
12、acket services over HIPERACCESS 2. Separate ETSI documents provide details on the system overview, data link control layer, Radio Link Control (RLC) sublayer, other convergence sublayers and conformance testing requirements for HIPERACCESS. The Packet based Convergence Layer is split into two parts,
13、 a Common Part and a Service Specific Part. The Common Part describes the functionality for adapting variable length packets/frames to the fixed size data units used at the Data Link Control (DLC) layer while the Service Specific Part describes the functionality required to support a certain protoco
14、l, e.g. Ethernet or IP. It is envisioned that several, independent, Service Specific Convergence Sublayers (SSCS) will be defied in the future as market requirements develop. The SSCSs all use the services of the Common Part and the DLC. Further SSCSs will be added in the future. The present documen
15、t is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 4. ETSI 5 ETSI TS 102 117-2 V1.l.l (2002-10) 1 Scope The present document is applicable to HIPERACCESS equipment supporting Ethernet packet services. The present document does only address the functiona
16、lity required to transfer variable length packetdframes over the radio interface between an HIPERACCESS Access Point (AP) and Access Terminal (AT). It does not address the requirements and technical characteristics for wired network interfaces at the Access Point and at the Access Terminal. The Pack
17、et based Convergence Layer stack consists of a Common Part, and Service Specific Parts that are defined in separate documents (this document defines the part for Ethernet packets). The Service Specific Convergence Sublayers all use the services provided by the Common Part and the HIPERACCESS Data Li
18、nk Control (DLC) layer. The task of the Common Part of the Packet based Convergence Layer is to adapt variable length packetdframes to the fixed data unit size used in the HIPERACCESS DLC layer. The present document does not address the requirements and technical characteristics for conformance test
19、ing. These are covered by separate documents. 2 Re fe re nces The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication andor edition number or version number) or
20、non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. il ETSI TS 102 000: “Broadband Radio Access Networks (BRAN); HIPERACCESS; DLC protocol specification“. ETSI TR 101 177: “Broadband Radio Access Networks (BRAN); Requir
21、ements and architectures for broadband fixed radio access networks (HIPERACCESS)“. IETF RFC 2684: “Multiprotocol Encapsulation over ATM Adaptation Layer 5“. ETSI TS 102 117-1: “Broadband Radio Access Networks (BRAN); HIPERACCESS; Packet based Convergence Layer; Part 1 : Common Part“. 21 31 41 3 Defi
22、nitions and abbreviations 3.1 De fi nit ions For the purposes of the present document, the following terms and definitions apply: Protocol Data Unit (PDU): data unit exchanged between entities at the same IS0 layer Service Data Unit (SDU): data unit exchanged between adjacent IS0 layers 3.2 Abbrevia
23、tions For the purposes of the present document, the following abbreviations apply: AAL ATM Adaptation Layer AP Access Point ETSI 6 ETSI TS 102 117-2 V1.l.l (2002-10) ATM CL DLC IP PDU RLC SDU sscs Asynchronous Transfer Mode Convergence Layer Data Link Control Internet Protocol Protocol Data Unit Rad
24、io Link Control Service Data Unit Service Specific Convergence Sublayer 4 Convergence Layer architecture 4.1 Gen eral The Packet Based Convergence Layer (CL) resides on top of the Data Link Control (DLC) layer. The task of this Convergence Layer is to adapt the service requirements of Packet Based a
25、pplications to the services offered by the HIPERACCESS DLC layer. Higher Layers Figure 1: HIPERACCESS Convergence Layers ETSI 7 ETSI TS 102 117-2 V1.l.l (2002-10) 4.2 Et hernet Servi ce Specific Convergen ce Su bl ayer architecture Figure 2 shows the protocol stack for handling Ethernet packet withi
26、n HIPERACCESS. Higher Layer i i i 33 PB CL protocol stack Common oart AAL5 ATM Cell Based CL I I HIPERACCESS DLC HIPERACCESS PHY I I Figure 2: Packet based CL protocol stack The Service Specific Convergence Sublayer, for Ethernet packets, shall handle the packets according to RFC 2684 3. The impleme
27、ntation of RFC 2684 3 shall be according to the following: Bridge protocols shall be supported; - - NOTE: VC multiplexing shall be supported as described in clause 5.2 of 3; LLC Encapsulation shall be supported as described in clause 6.2 of 3; Routed protocol modality (as described in clauses 5.1 an
28、d 6.1 of 3) is out of the scope of this SSCS, since the present specification refers only to Ethernet. Parameters The multiplexing modality (VC-multiplexing or LLC encapsulation) shall be exchanged during connection Set-up, since the receiver side shall know in advance which modality is used to enca
29、psulate Ethernet packets. The choice of the modality is done with the mu1 tiplexingMethod parameter that is inserted into connectionC1Parameters field within R1 c Conne c t i onAddi t i onIni t and R1 c Conne c t i onAddi t i onS e tup messages as specified in TS 102 O00 i. ETSI 8 ETSI TS 102 117-2 V1.l.l (2002-10) The encoding of this parameter is as follow (in ASN.l format): Table 1: multiplexingMethod format multiplexingMethod := ENUMERATED - 1 bit IlcEncapsulation (O) 1 vcMultiplexing (1) J ETSI 9 ETSI TS 102 117-2 V1.l.l (2002-10) vl.l.l History October 2002 Publication ETSI
