1、ETSI TS 101 761-1 1.2.1 (2000-11) Technical Specification Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Data Link Control (DLC) Layer; Part 1 : Basic Data Transport Functions 2 ETSI TS 101 761-1 V1.2.1 (2000-11) Th Reference RTS/BRAN-0020004-1 R1 Keywords access, broadband, radio, LAN, HI
2、PERLAN, layer 2 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 pres
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6、ecommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI TS 101 761-1 V1.2.1 (2000-11) Contents Intellectual Property Rights 7 Foreword 7 Introduction 7 1 2 3 3.1 3.2 3.3 4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.2 4.2.1 4.2.2 4.2.3 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.1.6 5.1.7 5.1.8
7、 5.1.9 5.1.10 5.1.11 5.2 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.3 5.4 5.5 5.5.1 5.5.2 5.5.3 5.5.4 5.5.5 5.5.6 5.5.6.1 5.5.6.2 5.5.6.3 Scope 8 References 8 Definitions, symbols and abbreviations . 8 Definitions 8 Symbols 10 Abbreviations 10 Overview 11 Error Control (EC) . 13 Radio link Control
8、(RLC) sublayer . 14 Physical layer (PHY) 14 Other functions (informative) . 14 Service Access Points to the CL (Informative) . 14 Primitive types . 15 Parameter definitions . 15 DLC-U-SAP 15 Logical and Transport channels . 16 Functional entities . 12 Medium Access Control (MAC) . 13 Logical Channel
9、s and their characteristics 16 Broadcast Control CHannel (BCCH) 16 Random access Feedback CHannel (RFCH) . 16 Logical Channels . 16 Frame Control CHannel (FCCH) 16 RLC Broadcast CHannel (RBCH) 17 Dedicated Control CHannel (DCCH) 17 User Broadcast CHannel (UBCH) 17 User Multicast CHannel (UMCH) 18 Us
10、er Data CHannel (UDCH) 18 Link Control CHannel (LCCH) 18 Association Control CHannel (ASCH) . 18 Transport channels and their characteristics . 18 Transport Channels 18 Broadcast CHannel (BCH) . 19 Frame CHannel (FCH) . 19 Access Feedback CHannel (ACH) 19 Long transport CHannel (LCH) 20 Short transp
11、ort CHannel (SCH) 20 Random CHannel (RCH) . 20 Mapping between Logical and Transport Channels 20 Overview of the MAC Frame 21 DLC addressing . 22 MAC ID 22 DLC Connection ID . 22 Access point ID 23 Sector ID . 23 BCCH 23 FCCH . 23 RFCH . 23 NET ID 22 Logical channels addressing . 23 ETSI 4 ETSI TS 1
12、01 761-1 V1.2.1 (2000-11) 5.5.6.4 5.5.6.5 5.5.6.6 5.5.6.7 5.5.6.8 5.5.6.9 5.5.6.10 5.5.7 5.5.7.1 5.5.7.2 5.5.7.3 5.5.7.4 5.5.7.5 5.5.7.6 RBCH 23 DCCH 23 UBCH 23 UMCH . 23 UDCH 24 LCCH 24 ASCH 24 Identification of transport channels . 24 BCH . 24 FCH . 24 ACH . 24 LCH . 24 SCH . 25 RCH . 25 6 Radio t
13、ransmission and reception functions . 25 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.2 6.2.1 6.2.2 6.2.2.1 6.2.2.2 6.2.2.3 6.2.2.4 6.2.3 6.2.4 6.2.4.1 6.2.4.2 6.2.4.2.1 6.2.4.2.2 6.2.4.3 6.2.5 6.2.5.1 6.2.5.2 6.2.5.3 6.2.5.4 6.2.6 6.2.7 6.2.8 6.2.9 6.2.9.1 6.2.9.1.1 6.2.9.1.2 6.2.9.2 6.2.9.2.1 6.2.9.2
14、.2 6.2.9.2.3 6.2.9.2.4 6.2.10 6.3 6.3.1 6.3.1.1 6.3.1.2 6.3.2 Format of the transport channels 25 Broadcast CHannel (BCH) format 25 Frame CHannel (FCH) Format . 25 Access feedback CHannel (ACH) format 26 Long transport CHannel (LCH) format . 26 Short transport CHannel (SCH) format . 27 Random CHanne
15、l (RCH) format 28 Logical channel formats 28 BCCH message format . 28 FCCH information element contents and message formats 31 IE for allocating resources for: RBCH. DCCH. UBCH. UMCH. and UDCH and LCCH for downlink and uplink . 31 IE for allocating resources for RBCH. DCCH. UBCH. UMCH. UDCH and LCCH
16、 in the direct link . 33 IE for empty parts in the MAC frame 34 IE for padding 34 RFCH message format . 35 RBCH message formats . 36 RBCH message in an LCH 36 Downlink RBCH message in an SCH 36 Messages from the RLC 36 Encryption seed . 37 Direct link RBCH message in an SCH 37 DCCH message formats .
17、 37 DCCH message in an LCH . 37 DCCH message in a downlink SCH 38 DCCH message in an uplink SCH or RCH 38 DCCH message in a direct link SCH . 39 UBCH message formats . 39 UMCH message formats 40 UDCH message formats . 40 LCCH message formats 41 Resource Request message formats . 41 Resource Request
18、message for the uplink . 41 Resource Request message for the direct link . 42 ARQ message formats 43 ARQ feedback message format in the uplink phase 43 ARQ feedback message format in the downlink and direct link phase . 44 Discard message format in the uplink phase . 45 Discard message format in the
19、 downlink and direct link phase 46 ASCH message format . 47 MAC protocol . 47 MAC operation 47 Access Point MAC Operation . 48 MT MAC Operation . 48 Rules for the composition of MAC frames 48 ETSI 5 ETSI TS 101 761-1 V1.2.1 (2000-11) 6.3.2.1 6.3.2.2 6.3.2.3 6.3.2.4 6.3.2.5 6.3.2.6 6.3.2.7 6.3.2.8 6.
20、3.3 6.3.4 6.3.4.1 6.3.4.2 6.3.4.3 6.3.5 6.3.5.1 6.3.5.2 6.3.5.3 6.3.5.4 6.3.5.5 6.3.6 6.3.7 6.3.7.1 6.3.7.2 6.3.7.3 6.3.7.3.1 6.4 EI 6.4.1 6.4.2 6.4.2.1 6.4.2.2 6.4.2.3 6.4.2.4 6.4.2.5 6.4.2.6 6.4.2.7 6.4.2.8 6.4.2.9 6.4.2.10 6.4.2.11 6.4.2.12 6.4.2.12.1 6.4.2.12.2 6.4.2.13 6.4.2.14 6.4.2.14.1 6.4.2
21、.14.2 6.4.3 6.4.3.1 6.4.3.2 6.4.3.3 6.4.3.4 6.4.3.5 6.4.3.6 6.4.3.7 6.4.3.8 6.4.3.9 6.4.3.9.1 6.4.3.9.2 6.4.3.9.3 6.4.4 6.4.4.1 6.4.4.2 BCH . 48 FCH . 49 ACH . 49 SCH . 50 RCH . 51 Order of the transport channels . 51 Logical Channels 53 Handling of resource request messages . 53 Accessing the RCH 5
22、4 Fixed capacity agreement (optional) . 55 General . 55 AP/CC Operation 55 MT Operation . 56 Timing requirements 57 Reference point and start pointers . 57 Minimum time between ACH and UL phase . 58 Minimum time between ACH and DiL phase 59 Request - Grant delay . 59 ARQ delays 59 Error indication b
23、its . 60 General . 60 Generation of the Error Indication Bits 61 Direct Mode . 62 Generation of the Error Indication Bits in DM . 62 rror Control . 63 General 63 Acknowledged mode 64 General . 64 Notations 65 LCH Sequence Number SN 65 Window Sizes k, . 65 Receiver window 65 Transmitter window 66 Bit
24、map Blocks (BMB) and Bitmaps Block Numbers (BMN) . 66 Cumulative Acknowledgement (CumAck) 68 EC Reset of the connection . 68 Error Control Procedures for the Receiver . 68 Handling extra capacity allocated to MTs in uplink or direct link direction 60 Error Control Procedures for the Transmitter . 69
25、 Discarding of LCHs 69 Actions of the transmitter 70 Actions of the receiver . 70 Handling of Dynamic ARQ bandwidth allocation 70 Flow Control 71 Receiver actions 71 Transmitter actions 71 Repetition mode . 71 General . 71 Notations 72 LCH Sequence Number SN 72 Window Sizes k, . 72 Acceptance range
26、72 Receiver window 72 Transmitter behaviour . 72 Error Control Procedures for the Receiver . 72 Discarding of LCHs 74 General . 74 Actions of the transmitter 74 Actions of the receiver . 74 Unacknowledged mode 74 General . 74 LCH Sequence Number SN 75 ETSI 6 ETSI TS 101 761-1 V1.2.1 (2000-11) 6.4.4.
27、3 6.4.4.4 6.5 6.6 6.7 6.7.1 6.7.2 6.7.3 6.7.3.1 6.7.3.2 6.7.4 6.7.5 6.7.6 6.7.6.1 6.7.6.2 6.7.6.3 6.7.6.4 6.7.7 6.8 6.9 6.9.1 6.9.2 6.9.2.1 6.9.2.2 6.9.2.3 6.9.2.4 6.9.2.5 6.9.2.6 6.9.2.7 6.9.3 6.9.4 6.9.4.1 6.9.4.2 6.9.4.3 Transmitter actions . 75 Receiver actions . 75 Multicast transmission . 75 C
28、RC calculation 75 Encryption 76 Introduction . 76 Encryption of LCHs . 76 Algorithms . 76 DES . 77 TripleDES 77 Encryption and decryption procedure . 77 Encryption keys . 78 Encryption Seed . 78 General . 78 Seed generation in the AP . 78 Seed transfer . 79 Seed generation in the MT 79 Initializatio
29、n Vector (IV) 80 Transmission power 81 Mapping between MAC frame and PHY frame 81 Number of OFDM symbols per transport channel excluding physical layer preambles . 81 PDU trains . 82 General . 82 Broadcast PDU train . 82 FCH-and-ACH PDU train . 83 Downlink PDU train . 83 Uplink PDU train with short
30、preamble 83 Uplink PDU train with long preamble . 84 Direct link PDU train 84 PHY modes for transport channels and special cases for logical channels 84 Guard times . 85 Radio turn-around times 85 Propagation delay guard times 85 Sector switch guard time . 85 Annex A (informative): Bibliography . 86
31、 History . 87 ETSI 7 ETSI TS 101 761-1 V1.2.1 (2000-11) 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
32、 can be found in ETSI SR O00 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server ClattD:/www.etsP.c/iDr. Pursuant to the
33、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 ETSI SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Forew
34、ord This Technical Specification (TS) has been produced by ETSI Project Broadband Radio Access Networks (BRAN). The present document describes the basic data transport functions of the Data Link Control (DLC) of HIgh PErformance Radio Local Area Network Type 2 (HIPERLAN/2) systems. Separate ETSI doc
35、uments provide details on the system overview, physical layer, radio link control sublayer, convergence sublayers and conformance testing requirements for HIPERLAN/2. The present document is part 1 of a multi-part deliverable covering the HIPERLAN Type 2; Data Link Control (DLC) Layer, as identified
36、 below: Part 1: Part 2: Part 3: “Basic Data Transport Functions“; “Radio Link Control Sublayer“; “Extension for Business Environment“; Part 4: “Extension for Home Environment“; Part 5: “Profile for Home Environment“. Introduction HIPERLAN/2 is confined to the functions, which are located in the two
37、lowest layers of the open systems interconnection (OSI) model, the physical and the data link control layers. The HIPERLAN/2 specifications also define some functionalities related to the network layer in the OS1 model. The HIPERLAN/2 system overview document, TR 101 683 6, contains an overall descr
38、iption of the HIPERLAN/2 system. Extensions for different applications of the DLC are specified in other HIPERLAN/2 DLC extension technical specifications (see Bibliography). The radio link control (RLC) sublayer 5 contains functions for radio resource control, association control and connection con
39、trol. The interworking with higher layers is handled by convergence layers on top of the data link control layer. Packet and cell based convergence layers are defined in other HIPERLAN/2 specifications (see TS 101 493 and TS 101 763 in Bibliography). The specification of a management information bas
40、e is described in TS 101 763 (see Bibliography). ETSI 8 ETSI TS 101 761-1 V1.2.1 (2000-11) 1 Scope The present document specifies the first phase of the basic data transport mechanism of the Data Link Control layer (DLC) of the HIPERLAN/2 system. It describes the technical characteristics of the fol
41、lowing parts of the DLC layer: Error Control, Medium Access Control (MAC) and the mapping between the PHY and the MAC layers of HIPERLAN/2.The present document does not address the requirements and technical characteristics for type approval and conformance testing. These are covered in separate Tec
42、hnical Specifications. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present documen t. References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a spec
43、ific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. 111 US National Bureau of Standards “Data Encryption Standard, Federal Information Processing Standard (FIPS) Publication 46-2, December 1993. US National Bureau of Standards “Guidelines for
44、Implementing and Using the NBS Data Encryption Standard“, Federal Information Processing Standard (FIPS) Publication 74. US National Bureau of Standards “DES Modes of Operation“, Federal Information Processing Standard (FIPS) Publication 81, December 1980. ETSI TS 101 475: “Broadband Radio Access Ne
45、tworks (BRAN); HIPERLAN Type 2; Physical (PHY) Layer“. ETSI TS 101 761-2: “Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Data Link Control (DLC) Layer; Part 2: Radio Link Control (RLC) sublayer“. ETSI TR 101 683 (V1.1.2): “Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; System ov
46、erview“. 121 131 141 151 161 3 3.1 Definitions, symbols and abbreviations Def i n it ions For the purposes of the present document, the following terms and definitions apply: Access Feedback CHannel (ACH): transport channel where the results of access attempts made in the random access phase of the
47、previous MAC frame is conveyed Access Point (AP): device that is responsible for the centralized control of the resources in a radio cell. It is usually connected to a fixed network Association Control Function (ACF): group of control functions that uses the services of the RLC. These functions are
48、responsible for the handling of the association between MT and AP Association control CHannel (ASCH): logical channel in the uplink that conveys new association and re-association request messages Broadcast CHannel (BCH): transport channel that broadcasts control information ETSI 9 ETSI TS 101 761-1
49、 V1.2.1 (2000-11) Broadcast Control CHannel (BCCH): logical channel that broadcasts control information which is relevant for the current MAC kame Central Controller (CC): provides control functionality equivalent to that of an access point but is not necessarily attached to a fixed network. This term is normally used if central controller and MT functionality are located in a single device. It mostly involves direct mode communication Centralized Mode (CM): in centralized mode, all data transmitted or received by a mobile terminal pass the access point or the centralized cont
