1、ETSI ES 201 660 1.1.1 (1999-07) ETSI Standard Terrestrial Trunked Radio (TETRA); Digital Advanced Wireless Service (DAWS); Physical Layer (PHY) service description STD-ETSI ES 203 bbO-ENGL 3393 = 3400855 0423245 129 ETSI ES 201 60 V1.l.l (199407) 2 Reference DEWETRA-04038 (fdcO0cp.PDF) Keywords data
2、, TETRA ETSI Postal address F-06921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistrb #I la Cous-Pdfecture de Grasse (OS) No 7803188 Tel.: +33 4 92 94 42 00 Fax: +3
3、3 4 93 65 47 16 internet secretanate etsi.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: editorOetsi.fr Copyright Notification No part may be reproduced except as authorized by written permissi
4、on. The copyright and the foregoing restriction extend to reproduction in ail media. Q European Telecommunications Standards Institute 1999. Ail rights reserved. STD-ETSI ES 201 660-ENGL 1999 3400855 0421246 Ob5 m 3 ETSI ES 201 660 V1.l.l (199947) Contents Intellectual Property Rights . 4 Foreword 4
5、 1 2 3 3.1 3.2 4 5 5.1 5.2 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 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 7.2.8 7.2.9 7.2.10 7.2.11 scope 5 References . 5 Definitions and abbreviations 5 Definitions . 5 Abbreviations . 6 Introduction 6 Link Management Servi
6、ces . 7 Downlink MAC PDU transfers over the PHY . 7 Uplink MAC PDU transfers over the PHY 8 Transport Services . 8 Service Primitives 9 Primitive Definitions 9 PHY-transfer-request 9 PHY-transfer-confirm . 9 PHY-transfer-indication 9 PHY-fiame-indication . 10 PHY-hunt-request . 10 PHY-hunt-confirm 1
7、0 PHY-service-request . 10 PHY-service-confirm 11 PHY-service-indication 11 PHY-frame-assignmentrequest . 11 PHY-frame-assignment-confhn 11 Parameter Definitions 12 base-station-ID 12 block-condition_ 12 frame-assignment-result 12 frame-assignments . 12 frame-number 12 hunt-result 12 MPDU 12 service
8、-result . 12 transfer-result . 13 MPDU-length-blocks 12 transfer-receipt-ack . 13 Bibliography 14 History 15 STD-ETSI ES 201 bbO-ENGL 1999 3400855 0423247 TTL 4 ETSI ES 201 660 Vl.l.l (199407) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been
9、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 314: “Intellectual Property Rights (IPRs); Essential, orpotentially Essential, IPRs notijied to ETSI in respect ofETSZ standards“, which is
10、 available free of charge 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
11、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 ETSI Standard (ES) has been produced by ETSI Project Terrestrial Trunked Radio (TETRA). An overview of the requirements for DAWS can be found in TR 1
12、01 156 i. STD.ETSI ES 203 bbO-ENGL 1777 m 3400855 0423248 738 m ETSI ES 201 660 V1.l .I (1 99947) 5 1 Scope The present document specifies the service requirements for the Digital Advanced Wireless Service (DAWS) Physical (PHY) layer. The document describes the general service characteristics of a D
13、AWS PHY layer which can intenvork successfully with a DAWS MAC. Specific service details will be provided in a future version of the present document. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. Referen
14、ces are either specific (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
15、 to later versions published as an EN with the same number. il TR 101 156: “Terrestrial Trunked Radio (TETRA);Technical requirements specification for Digital Advanced Wireless Service (DAWS)“. TS 101 659: “Digital Advanced Wireless Service (DAWS); Medium Access Control (MAC); service description“.
16、Pl 3 3.1 D ef i nit i on s and 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 block: fixed-length sequence of bytes from a MAC PDU
17、 downlink general term meaning “from the base station to the mobile station“ mobile station: piece of equipment able to create and consume data but only having network access via a base station frame: minimum time period reserved for transmission by a single mobile station on a single frequency mult
18、iframe: time period consisting of an integral number of frames between base station broadcasts specifying mobile station bandwidth assignments protocol data unit: set of parameters andor data passed from peer to peer by a protocol primitive protocol primitive: request, response, or informative messa
19、ge sent from peer to peer service data unit: set of parameters and/or data passed between adjacent layers by a service primitive service primitive: request, response, or informative message sent between adjacent layers uplink general term meaning “from the mobile station to the base station“ 6 ETSI
20、ES 201 660 V1.l.l (199407) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: BS DAWS DL IP LLC MAC m MPDU MS PDU PHY PHY-LNK PHY-TPT SAP SDU UL Base Station Digital Advanced Wireless Service Downlink Internet Protocol Logical Link Control Medium Access Co
21、ntrol Muliframe MAC Protocol Data Unit Mobile Station Protocol Data Unit Physical Layer PHY Link Management Service PHY Transport Service Service Access Point Service Data Unit Uplink 4 Introduction The DAWS protocol architecture is provided in TR 101 156 l. The Physical Layer (PHY) provides service
22、s to the Medium Access Control (MAC) TS 101 659 2. The present document provides the requirements the PHY service shall satisfy to operate successfully within a Digital Advanced Wireless Service (DAWS) network. The requirements in the present document apply to the integrated DAWS subnet described in
23、 TR 101 156 i. The prefix PHY will be used when a requirement applies to both the BS and MS PHY layers. The prefix BS-PHY or MS-PHY will be used when a requirement applies only to the BS or MS PHY layers, respectively. As shown in figure 1, the Medium Access Control (MAC) accesses PHY services via s
24、ervice access points (SAPS) A and B. PHY-SAP-A is for data transfer service primitives and PHY-SM-B is for local control and status service primitives. PHY-SAP-A PHY-SAP-B MAC LAYER LINK MANAGEMENT PHY LAYER Figure 1 : DAWS PHY Architecture Requirements for the transport and link management services
25、 are provided in clauses 5 and 6. Service primitives and associated service data units are provided in clause 7. STD-ETSI ES 203 bbO-ENGL 3999 W 3400855 0423250 59b W Syslnfo (MF N+I) 7 ETSI ES 201 660 V1.l.l (199907) Frame Assignments (MFN+2) 5 Sysinfo (MF N+2) Block Transfer Block Transfer Syslnfo
26、 (MF N+3) b b Link Management Services MAC PDU Transfer The PHY link management service (PHY-LNK) manages the wireless link between the BS and MS, including modulating and demodulating RF carriers with bit patterns (blocks) provided by PHY-TFT. BSPHY-LNK is responsible for generating and transmittin
27、g the synchronization block and for transmitting any downlink data blocks provided by BS-PHY-TIT. BS-PHY-LNK is also responsible for receiving uplink data blocks and transferring them to BS-PHY-TPT for uplink PDU reconstruction. MS-PHY-LNK synchronizes with BS-PHY-LNK based on received timing inform
28、ation. MS-PHY-LNK is responsible for sending uplink blocks and receiving downlink blocks. MS-PHY-LNK transfers downlink blocks to MS-PHY-“T for downlink PDU reconstruction. MS-PHY-WK performs power management, including support for power-saving modes of operation. MS-PHY-LNK handles MAC hunt request
29、s and cell service requests, and performs channel quality monitoring. 5.1 Downlink MAC PDU transfers over the PHY Figure 2 provides a flow diagram illusrating the messages exchanged to transfer a downlink MAC PDU using dynamic bandwidth allocation. The message flow can be traced as follows: i) BS-MA
30、C sends a PHY-fe-asignment_reguest service primitive to BS-PHY during multiframe N containing frame assignments for multiframe N + 2. A frame assignment specifies whether the BS, a particular MS. or all MS are permitted to transmit in the frame; 2) BS-PHY sends the frame assignment information to th
31、e MS-PHY during frame O of multiframe N + 1. MS-PHY immediately transfers the frame assignment information to MS-MAC; 3) During multiframe N + 1, BS-MAC issues MAC PDU transfer request service primitives to BS-PHY to fill its assigned downlink frames during multiframe N + 2. BS-PHY performs MAC PDU
32、block encoding and any other tasks necessary to pre.pare the PDU blocks for transfer during multiframe N + 2; 4) BS-PHY transfers PDU blocks to MS-PHY in its assigned frames during multiframe N + 2; 5) MS-PHY reassembles the downlink MAC PDU from the received blocks and sends the resulting MAC PDU t
33、o MS-MAC. BS-MAC BS-PHY MS-PHY MS-MAC Sysinfo (MF N) - Frame Assignments MAC PDU Transfer .I Figure 2: Downlink MAC PDU Transfers Using Dynamic Bandwidth Allocation TSf STD.ETSI ES 201i 660-ENGL 1997 3400855 0421251 422 m Sysinfo (MF N+1) - Syslnfo (MF N+2) Block Transfer * 8 ETSI ES 201 660 V1.l.l
34、(199947) Frame Assignment. (MF N+2) MAC PDU Transfer 5.2 Uplink MAC PDU transfers over the PHY Figure 3 provides a flow diagram illustrating the messages exchanged to transfer an uplink MAC PDU using dynamic bandwidth allocation. The message flow can be traced as follows: i) BS-MAC sends a PW-frame-
35、assignment-request service primitive to BS-PHY during multiframe N containing frame assignments for multiframe N + 2. A frame assignment specifies whether the BS, a particular MS, or all MS are permitted to transmit in the frame; 2) BS-PHY sends the frame assignment information to the MS-PHY during
36、frame O of multiframe N + 1. MS-PHY immediately transfers the frame assignment information to MS-MAC; 3) During multiframe N + 1, MS-MAC decides how to utilize any uplink multiframe N + 2 frames assigned to it. MS-MAC issues MAC PDU transfer request service primitives to MS-PHY to full its assigned
37、uplink frames during muitiframe N + 2. MS-PHY performs MAC PDU block encoding and any other tasks necessary to prepare the PDU blocks for transfer during multiframe N + 2; 4) MS-PHY transfers PDU blocks to the BS-PHY in its assigned frames during multiframe N + 2; 5) BS-PHY reassembles the uplink MA
38、C PDU from the received blocks and sends the resulting MAC PDU to BS-MAC. BS-MAC BS-PHY MS-PHY MS-MAC Frame Asslgnments MF N+2) Block Transfer MAC PDU Transfer Syslnfo (MF N+3) Figure 3: Uplink MAC PDU Transfers Using Dynamic Bandwidth Allocation 6 Transport Services The PHY transport service (PHY-T
39、PT) performs all of the operations necessary on the send side to prepare the data blocks associated with a PDU for transmission over the physical medium, and performs all of the operations necessary on the receive side to reconstruct the PDU from received data blocks. PHY-TPT may perform operations
40、such as encodingldecoding and interleavinglde-interleaving. PHY-TFT shall implement an encodingldecoding scheme which permits the detection, but not necessarily the correction, of a bit error in a block. PHY-TPT shall pass received block condition information along with PDU data to the MAC. STD-ETSI
41、 ES 203 bbO-ENGL 1999 3400855 0423252 369 Usage Source Destination 9 ETSI ES 201 660 V1.l.l (199407) BS and MS MAC Layer PHY Layer 7 Multiple Outstanding SDU Parameters 7.1 No MPDU MPDU-len-blocks Service Primitives u=* Primi tive Definit ions BS and MS 7.1 .I PHY-transfer-request Usage Source Desti
42、nation Table 1 BS and MS PHY Layer MAC Layer I PHY transfer reauest I SDU Parameters MPDU MPDU-length-blocks I Service Access Point 1 A I This primitive is used by the MAC layer to pass a MPDU to the PHY layer for transfer to one or more peer PHY SAP As. The frame number specified is in the next mul
43、tiframe and shall have been previously assigned to the requesting entity for uplink or downlink data transfers. 7.1.2 PHY-transfer-confirm Table 2 I PHY transfer confirm I I Destination I MAC Laver I This primitive acknowledges the receipt of the MPDU associated with a PHY-transfer-request. It does
44、not indicate that the MPDU has been transferred to one or more peer SAPS. 7.1.3 PHY-transfer-indication I Service Access Point I A I This primitive is used by the PHY to pass a received MPDU to the MAC layer. STD-ETSI ES 201, bbO-ENGL 1,999 3400855 0421253 2T5 M 10 ETSI ES 201 60 Vi .1.1 (199407) So
45、urce Destination Service Access Point 7.1.4 PHY-frame-indication PHY Layer MAC Layer B Table 4 I PHY frame indication I usage I Usaae I BS and MS -1 MS Servlce Access Polnt Multiple Outstanding SDU Parameters I SDU Parameters I frame number I B No This primitive provides the MAC with PHY layer timin
46、g information. This primitive is sent at the start of each frame in the multiframe. The MAC uses the PW-fme-indication to properly coordinate its interaction with the PHY layer. SDU Parameters 7.1.5 PHY-hunt-request base-station-i0 Table 5 I PHY hunt reauest -1 I Destination I PHmer -1 This primitiv
47、e teils the PHY to report adjacent cell signai strength and quality. 7.1.6 PHY-hunt-confirm Table 6 i PHY-hunt-confirm I Irrrrna I MS I -“a- .- I source l PHY Layer Destlnation MAC Laver I Servlce Access Point I B I I SDU Parameters I hunt result I This primitive reports adjacent cell signal strengt
48、h and quality. 7.1.7 PHY-service-request Table 7 PHYsenrice-request Usage I MS Source MAC Laver I Destination I PHY Laver -1 I Service Access Point I B I This primitive tells the PHY to camp on the BS specified by base-stution-lD. _ _ STDOETSI ES 201 bb0-ENGL 3999 3400855 0423254 131 11 ETSi ES 201
49、660 vi .1 .i (i 999-07) Service Access Point Multiple Outstanding SDU Parameters 7.1.8 PHY-serviceconfirm B No frame assianments Table 8 I PHY service canrm 1 I Usaae MS -1 This primitive confirms a service request. 7.1.9 PHY-service-indication Table 9 PHY-service-indication Usaae I MS I Source PHY Layer Destination MAC Layer B I SDUParameters I service status -1 This primitive is used by the PHY to provide the MAC with the latest service status. 7.1 .I O PHY-frame-assignment-request Table 10 1 PHY-frame-assignmen t-request I Usage I BS Saurcm MAC
