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    ETSI TS 101 493-1-2000 Broadband Radio Access Networks (BRAN) HIPERLAN Type 2 Packet Based Convergence Layer Part 1 Common Part (V1 1 1)《宽带无线接入网(BRAN) HIPERLAN第2类 基于信息包的会聚层 第1部分 通用_1.pdf

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    ETSI TS 101 493-1-2000 Broadband Radio Access Networks (BRAN) HIPERLAN Type 2 Packet Based Convergence Layer Part 1 Common Part (V1 1 1)《宽带无线接入网(BRAN) HIPERLAN第2类 基于信息包的会聚层 第1部分 通用_1.pdf

    1、ETSI TS 1 O1 493-1 VI .I .I (2000-04) Technical Specification Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Packet based Convergence Layer; Part 1: Common Part 2 ETSI TS 1 O1 493-1 V1.l.l (2000-04) The pre ent d Reference DTSIBRAN-0024004-1 Keywords HI PE RLAN, broadband, radio, access ET

    2、SI 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 0001 7 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice Individual copies of the present document can

    3、be downloaded from: http:/w.etsi.aq cument mav be made available in more than one electronic version or in orint. In anv case f existing or perceived difference in coitents between such versions, the reference version is the Poiable Docuhent Format (PDF). In case of dispute, the reference shall be t

    4、he printing on ETSI printers of the 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

    5、 ht?p:/.etsi.orn/lb/status/ If you find errors in the present document, send your comment to: editor et.si.fr Coovriaht Notification 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 Telec

    6、ommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI TS 1 O1 493-1 V1.l.l (2000-04) Contents Intellectual Property Rights 5 Foreword 5 1 Scope 6 2 References 6 3 Definitions and abbreviations 7 3.1 Definitions 7 3.2 Abbreviations . 7 4 Convergence Layer architecture 8 4.1 General

    7、 . 8 4.2 Packet based Convergence Layer architecture . 8 4.2.1 User plane architecture . 8 4.2.2 Control plane architecture . 9 5 Common Part - User Plane . 10 5.1 5.2 5.2.1 5.2.2 5.3 5.3.1 5.3.2 5.3.3 5.3.3.1 5.3.3.2 5.3.4 5.3.4.1 5.3.4.2 5.3.4.3 5.3.5 5.4 5.4.1 5.4.2 5.4.2.1 5.4.2.2 5.4.3 5.4.3.1

    8、5.4.3.2 5.4.3.3 General . 10 Primitives (informative) . 11 Primitive types 11 Parameter definitions 11 Common Part Convergence Sublayer . 11 Interface to the Service Specific Convergence Sublayer 11 Interface to the Segmentation and Reassembly Sublayer 12 Functionality . 12 General 12 Coding of the

    9、CPCS PDU . 12 Procedures 13 General 13 Procedures at the sender 14 Procedures at the receiver . 14 Segmentation and Reassembly . 14 Interface to the DLC . 14 Functionality . 14 General 14 Procedures 15 General 15 Procedures at the sender 16 Procedures at the receiver . 16 Maximum Transmission Unit 1

    10、4 Coding of the SAR PDU . 15 ETSI 4 ETSI TS 1 O1 493-1 V1.l.l (2000-04) 6 7 Convergence Layer Version . 16 Common Part MIB . 17 Annex A (normative): Coding of PDUs 18 Annex B (informative): SDL diagrams 19 B.l CPCS sender . 19 B.2 CPCS receiver 20 B . 3 SAR sender . 21 B.4 SAR receiver 22 Annex C (i

    11、nformative): Data unit naming convention 23 Annex D (informative): Functional model . 24 D.l Sender . 24 D.2 Receiver 25 Bibliography . 26 History 27 ETSI 5 ETSI TS 1 O1 493-1 V1.l.l (2000-04) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been

    12、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 SR O00 3 14: “Intellectual Propero Rights (IPRs); Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which i

    13、s 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 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

    14、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 Specification (TS) has been produced by ETSI Project Broadband Radio Access Networks (BRAN). It defines the functionality required for the support of pac

    15、ket services over HIgh PErformance Radio Local Area Network Type 2 (HIPERLAN/2) 3. Separate ETSI documents provide details on the system overview, data link control layer, radio link control sublayer, other convergence sublayers and conformance testing requirements for HIPERLAN/2. The Packet based C

    16、onvergence Layer is split into two parts, 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 functional

    17、ity required to support a certain protocol, e.g. Ethernet or IP. It is envisioned that several, independent, Service Specific Convergence Sublayers (SSCS) will be defined in the future as market requirements develop. The SSCSs all use the services of the Common Part and the DLC. The present document

    18、 is part 1 of a multi-part TS covering the Packet based Convergence Layer, as identified below: Part 1: “Common Part“; Part 2: “Ethernet Service Specific Convergence Sublayer“. Further SSCSs will be added in the future. ETSI 6 ETSI TS 1 O1 493-1 V1.l.l (2000-04) 1 Scope The present document is appli

    19、cable to HIPERLAN/2 equipment supporting packet services, such as Ethernet, IEEE 1394 5 or IP. The present document does only address the functionality required to transfer variable length packetdframes over the radio interface between an HIPERLAN/2 Access Point and Mobile Terminal. It does not addr

    20、ess the requirements and technical characteristics for wired network interfaces at the Access Point and at the Mobile Terminal. The Packet based Convergence Layer consists of a Common Part, defined in this document, and a Service Specific Part which consists of several Service Specific Convergence S

    21、ublayers (SSCS). The SSCSs are defined in separate documents. The Service Specific Convergence Sublayers all use the services provided by the Common Part and the HIPERLAN/2 Data Link Control (DLC) layer. The task of the Common Part of the Packet based Convergence Layer is to adapt variable length pa

    22、cketdframes provided by the different Service Specific Convergence Sublayers to the fixed data unit size used in the HIPERLAN/2 DLC layer. The present document does not address the requirements and technical characteristics for type approval and conformance testing. These are covered by separate doc

    23、uments. 2 References 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, edition number, version number, etc.) or non-specific. For a specific reference, su

    24、bsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. il ETSI TS 101 761-1: “Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Data L

    25、ink Control (DLC) Layer; Part 1: Basic Data Transport Functions“. ETSI TS 101 761-2: “Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Data Link Control (DLC) layer; Part 2: Radio Link Control Protocol Basic Functions“. ETSI TR 101 03 1 (V2.2): “Broadband Radio Access Networks (BRAN); HIgh P

    26、Erformance Radio Locals Area Network (HIPERLAN) Type 2; Requirements and architectures for wireless broadband access“. Pl 31 41 ITU-T Recommendation 1.363.5 (08/96): “B-ISDN ATM Adaptation Layer specification: Type 5 AAL“. 51 IEEE Std 1394 (1995): “Standard for a High Performance Serial Bus“. ETSI 7

    27、 ETSI TS 1 O1 493-1 V1.l.l (2000-04) 3 Def i nit ions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply. HPERLAN/2: HIgh PErformance Radio Local Area Network Type 2, a short-range wireless LAN providing broadband local access. Stand

    28、ardized by ETSI Project BRAN Maximum Transmission Unit (MTU): maximum packet size in octets that can be conveyed in one piece over a link 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

    29、Abbreviations For the purposes of the present document, the following abbreviations apply: AAL AP ATM BRAN CEP CL CPCS c-SAP DLC DLCC DUC ETSI HIPERLAN/2 H/2 IP IS0 LSB MAC MIB MSB MT MTU PAD PDU RLC SAP SAR SDU SNMP sscs TS u-SAP ATM Adaptation Layer Access Point Asynchronous Transfer Mode Broadban

    30、d Radio Access Networks (Project) Connection End Point Convergence Layer Common Part Convergence Sublayer Control Service Access Point Data Link Control DLC Connection DLC User Connection European Telecommunications Standards Institute High Performance Radio Local Area Network Type 2 see HIPERLAN/2

    31、Internet Protocol International Standards Organisation Least Significant Bit Medium Access Control Management Information Base Most Significant Bit Mobile Terminal Maximum Transmission Unit Padding field Protocol Data Unit Radio Link Control Service Access Point Segmentation And Reassembly Service D

    32、ata Unit Simple Network Management Protocol Service Specific Convergence Sublayer Technical Specification User Service Access Point ETSI 8 ETSI TS 1 O1 493-1 V1.l.l (2000-04) 4 Convergence Layer arch i tect u re 4.1 General The Convergence Layer (CL) resides on top of the Data Link Control (DLC) lay

    33、er. The task of the Convergence Layer is to adapt the service requirements of different Higher Layers to the services offered by the HIPERLAN/2 DLC layer. Two types of Convergence Layers can be distinguished, a Cell based Convergence Layer and a Packet based Convergence Layer (see figure 4.1). Furth

    34、er Convergence Layers may be specified in the future. The Cell based Convergence Layer offers services to Higher Layers that use the fixed size ATM cell as the transfer unit. Higher layers Convergence Layers h Figure 4.1 : HIPERLANR Convergence Layers The Packet based Convergence Layer offers servic

    35、es to Higher Layers that use packets or frames of variable size or fixed size which exceed the ATM cell size. Typical examples of these are Ethernet and the Internet Protocol suite. The Packet based CL consists of two main parts, a Common Part and a Service Specific Part, which consists of several S

    36、ervice Specific Convergence Sublayers (SSCS). It is envisioned that several different Service Specific Convergence Sublayers will be specified by BRAN to meet the requirements of different Layer 2 and Layer 3 protocols. 4.2 Packet based Convergence Layer architecture 4.2.1 User plane architecture Th

    37、e Packet based CL exchanges packets/frames of variable size with Higher Layers and it exchanges data units of fixed size with the DLC. This conversion of packets with a variable size into data units with a fixed size and vice versa is a function common to all supported Higher Layers and thus this fu

    38、nctionality is part of the Common Part. The user plane of the Common Part is further subdivided into the Common Part Convergence Sublayer (CPCS) and the Segmentation And Reassembly (SAR) sublayer (see figure 4.2). ETSI 9 ETSI TS 1 O1 493-1 V1.l.l (2000-04) CL User SAPS Packet based Convergence Layer

    39、 Service Specific I I, Pari 1: Common Part Figure 4.2: Packet based Convergence Layer - user plane The main functions of the Common Part Convergence Sublayer are: - to add padding and additional information to the packets received from the SSCS and pass the resulting packets to the SAR; - to remove

    40、and interpret padding and information added at the peer CPCS from packets received from the SAR and pass them up to the SSCS. The main functions of the Segmentation And Reassembly sublayer are: - to segment the packets received from the CPCS into fixed size data units. These are then passed down to

    41、the DLC via the DLC User SAP (U-SAP); - at the receiver, to copy the fixed size data units from the DLC into a reassembly buffer and pass the reassembled packet up to the CPCS. The task of the Service Specific Part is to map specific service requirements of Higher Layers to the service offered by th

    42、e DLC Layer and to convert packets received from the Higher Layer to the format expected at the CPCS and vice versa. As the requirements differ according to the Higher Layer, several SSCSs, each responsible for one specific Higher Layer, will be developed. The SSCSs that are supported are advertised

    43、 and chosen at initial association. 4.2.2 Control plane architecture The Packet based Convergence Layer also includes control plane procedures. The tasks of these are (not exhaustive): - Convergence Layer selection at association time; - - Higher Layer parameter transfer and negotiation; mapping of

    44、Higher Layer connection management procedures to the DLC. ETSI 10 ETSI TS 1 O1 493-1 V1.l.l (2000-04) The Convergence Layer control plane interacts with the Radio Resource Control, Association Control and DLC Connection Control functions of the DLC control plane, i.e. the Radio Link Control sublayer

    45、 (RLC), (see figure 4.3). The control plane procedures are defined in the SSCS. The Common Part is transparent to the control plane. Service Specific Convergence Sublayer Service Specific Service Specific Service Specific Convergence Layer Initiation: ConnectiodQoS Control: Handover Control Paramete

    46、r transferhegotiation Unicast Broadcast AP Network Address transfer QoS model negotiation Multicast Carnmrrr Ma cantras grGce:b#res “ ir Sig (signal), for a layer providing service to notify the next higher layer of any specific service related activity. - - The defined types for each category of pr

    47、imitive are shown as a list in curly brackets. EXAMPLE: CPCS-UNITDATA inv, Sig In this example, the defined types are invoke and signal. 5.2.2 Parameter definitions Endpoint identifiers: some primitives contain an endpoint identifier. This identifier shall be used to distinguish primitives related t

    48、o different protocol instances. As identifier, the DLC User Connection ID, which is the concatenation of a MAC-ID and DLCC-ID i, shall be used. The coding of this identifier is a local matter and not defined in the present document. The identifier is defined as: - DLC User Connection ID (DUC-ID) Mes

    49、sage unit: each piece of higher layer information that is included in the primitive is called a message unit. A series of one or more message units may be associated with each primitive where each separate unit is related to one information element in the corresponding lower layer message. The list of message units is derived from the message definitions by reference to the information elements that may contain information from or to the CL. 5.3 Common Part Convergence Sublayer 5.3.1 Interface to the Service Specific Convergence Sublayer The following primitive is u


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