1、ETS I TS 1 02 1 1 7- 1 VI .I .I (2002-09) Technical Specificafion Broadband Radio Access Networks (BRAN); HIPERACCESS; Packet based Convergence Layer; Part 1: Common Part 2 ETSI TS 102 117-1 VI .I .I (2002-09) Reference DTSIBRAN-0034004-1 Keywords access, broadband, HIPERACCESS, radio ETSI 650 Route
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6、a. 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 its Members. 3GPPTM is a
7、Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI 3 ETSI TS 102 117-1 VI . 1 . 1 (2002-09) Contents Intellectual Property Rights 4 Foreword . 4 1 Scope 5 2 References 5 3 Definitions and abbreviations . 5 5 3.1 . 6 3.2 . 4 Convergence Layer ar
8、chitecture . 6 4.1 General . 6 4.2 Packet based Convergence Layer architecture 7 History 8 ETSI 4 ETSI TS 102 117-1 VI .I .I (2002-09) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these esse
9、ntial 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 standards“, which is available from the ETSI Secretariat. Latest updates
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11、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 packet services over HIPERACCESS 2. Separate ETSI documents provide detai
12、ls on the system overview, data link control layer, radio link control sublayer, other convergence sublayers and conformance testing requirements for HIPERACCESS. The Packet based Convergence Layer is split into two parts, a Common Part and a Service Specific Part. The Common Part describes the func
13、tionality for adapting variable length packets/frames to the fixed size data units used at the Data Link Control (DLC) layer 11 while the Service Specific Part describes the functionality required to support a certain protocol, e.g. Ethernet or IP. It is envisioned that several, independent, Service
14、 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. The present document is part 1 of a multi-part deliverable covering the Packet based Convergence Layer, as identified below: Part 1: “Com
15、mon Part“: Part 2: “Ethernet Service Specific Convergence Sublayer“. Further SSCSs may be added in the future. ETSI 5 ETSI TS 102 117-1 VI .I .I (2002-09) 1 Scope The present document is applicable to HIPERACCESS equipment supporting packet services, such as Ethernet, IEEE 1394 4 or IP. The present
16、document does only address the functionality required to transfer variable length packetdframes over the radio interface between an HIPERACCESS Access Point and Access Terminal. It does not address the requirements and technical characteristics for wired network interfaces at the Access Point and at
17、 the Access Terminal. The Packet based Convergence Layer stack consists of a Common Part, defiied in this document, and Service Specific Parts that are defiied in separate documents. The Service Specific Convergence Sublayers all use the services provided by the Common Part and the HIPERACCESS Data
18、Link Control (DLC) layer i. 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 i. The present document does not address the requirements and technical characteristics for conformanc
19、e testing. 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 numbe
20、r) or 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);
21、Requirements and architectures for broadband fixed radio access networks (HIPERACCESS)“. ETSI TS 102 115-1: “Broadband Radio Access Networks (BRAN); HIPERACCESS; Cell Based Convergence Layer; Part 1 : Common part“. IEEE 1394 (1995): “IEEE Standard for a High Performance Serial Bus“. ITU-T Recommenda
22、tion 1.363.5: “B-ISDN ATM Adaptation Layer specification: type 5 AAL“. 21 31 41 51 3 Definitions and abbreviations 3.1 De fi nit ions For the purposes of the present document, the following terms and defiiitions apply. Protocol Data Unit (PDU): data unit exchanged between entities at the same IS0 la
23、yer Service Data Unit (SDU): data unit exchanged between adjacent IS0 layers ETSI 6 ETSI TS 102 117-1 VI .I .I (2002-09) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AAL AP ATM CL CPCS DLC ETSI HA IP PDU RLC SDU sscs ATM Adaptation Layer Access Point
24、 Asynchronous Transfer Mode Convergence Layer Common Part Convergence Sublayer Data Link Control European Telecommunications Standards Institute HIPERACCESS Internet Protocol Protocol Data Unit Radio Link Control Service Data Unit Service Specific Convergence Sublayer 4 Convergence Layer architectur
25、e 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 applications to the services offered by the HIPERACCESS DLC layer. I I Higher Layers Convergence Layer F
26、igure 4.1 : HIPERACCESS Convergence Layers ETSI 7 ETSI TS 102 117-1 VI .I .I (2002-09) 4.2 Packet based Convergence Layer architecture Figure 4.2 shows the protocol stack for handling packet-based applications within HIPERACCESS. Higher Layer i i i 33 PB CL protocol stack sscs I Common pan I I Hiper
27、Access DLC HiperAccess PHY I I Figure 4.2: Packet based CL protocol stack The Packet Based Convergence Layer adapts packet based application data to HIPERACCESS DLC relying on the Cell Based Convergence Layer. The ATM Adaptation Layer type 5 5 has the task to adapt the variable length frames to the Cell Based ATM structure. Once an ATM cell is constructed, it is passed through the HA Cell Based CL as described in 3. ETSI 8 ETSI TS 102 117-1 VI .I .I (2002-09) vl.l.l History September 2002 Publication ETSI
