1、ETSI TS 101 660 1.2.1 (2000-04) Technical Specification Terrestrial Trunked Radio (TETRA); Digital Advanced Wireless Service (DAWS); Physical Layer (PHY) Service Description 2 ETSI TS 1 O1 660 V1.2.1 (2000-04) Reference RTSITETRA-04048 Keywords TETRA, PDO, data, radio ETSI Postal address F-O6921 Sop
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3、si.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: editorQetsi.fr Important notice This ETSI deliverable may be made available in more than one electronic version or in print. In any case of exi
4、sting or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Coovriaht Notification N
5、o part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI TS 1 O1 660 V1.2.1 (2000-04) Contents Intellectual Property R
6、ights 4 Foreword 4 Introduction 4 1 2 3 3.1 3.2 4 4.1 4.2 5 6 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7 6.1.8 6.1.9 6.1.10 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.5 6.2.6 6.2.7 6.2.8 Scope 6 References 6 Definitions and abbreviations 6 Definitions 6 Abbreviations . 7 Link Management Services 7 Downlink
7、MAC PDU transfers over the PHY 7 Uplink MAC PDU transfers over the PHY 8 Transport Services 9 Service Primitives 9 Primitive Definitions 9 PHY-transfer-request . 9 PHY-transfer-confirm 10 PHY-transfer-indication 10 PHY-hunt-request 10 PHY-hunt-confirm . 10 PHY-servicerequest . 11 PHY-service-confirm
8、 11 PHY-service-indication . 11 PHY-slot-assignment-request . 11 PHY-slot-assignment-confirm 12 Parameter Definitions . 12 transfer-receipt-ack . 12 base-station-ID 12 slot-assignment-result . 12 slot-assignments . 12 slot-number 12 hunt-result 12 MPDU . 12 service-result 12 Bibliography . 13 Histor
9、y 14 ETSI 4 ETSI TS 1 O1 660 V1.2.1 (2000-04) 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 can be fo
10、und in SR O00 3 14: “Intellectual Propero Rights (IPRs); Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR Polic
11、y, 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 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
12、Specification (TS) has been produced by ETSI Project Terrestrial Trunked Radio (TETRA). The present document is one of the three documents specifying the requirements for TETRA Digital Advanced Wireless Service (DAWS): - TS 101 658: Logical Link Control (LLC) Service Description; - - TS 101 659: Med
13、ium Access Control (MAC) Service Description; TS 101 660: Physical Layer (PHY) Service Description. An overview of the requirements for DAWS can be found in TR 101 156 i. Introduction The DAWS protocol architecture is provided in i. The Physical Layer (PHY) provides services to the Medium Access Con
14、troller (MAC) 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 i. The prefix PHY will be used wh
15、en a requirement applies to both the BS and MS PHY layers. The prefix BSPHY or MSPHY will be used when a requirement applies only to the BS or MS PHY layers, respectively. As shown in figure 1, the Medium Access Controller (MAC) accesses PHY services via service access points (SAPS) A and B. PHY-SAP
16、-A is for data transfer service primitives and PHY-SAP-B is for local control and status service primitives. ETSI 5 ETSI TS 1 O1 660 V1.2.1 (2000-04) PHY-SAP-A PHYSAP-B MAC LAYER PHY LAYER I (PHY-TPT) TI + 6 i SERVICE (PHY-LNK) I Figure 1 : DAWS PHY Architecture Requirements for the transport and li
17、nk management services are provided in the clauses 4and 5 Service primitives and associated service data units are provided in clause 6. ETSI 6 ETSI TS 1 O1 660 V1.2.1 (2000-04) 1 Scope The present document specifies the service requirements for the Digital Advanced Wireless Service (DAWS) Physical
18、(PHY) layer. The document describes the general service characteristics of a DAWS PHY layer which can interwork 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
19、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, subsequent revisions do not apply. For a non-specific reference, subsequent revis
20、ions do apply. 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 TR 10 1 156: “Terrestrial Trunked Radio (TETRA); Technical requirements specification for Digital Advanced Wireless Service (DAWS)“. ETSI TS 101 659: “Ter
21、restrial Trunked Radio (TETRA); Digital Advanced Wireless Service (DAWS); Medium Access Control (MAC) service description“. Pl 3 3.1 Definitions and abbreviations Definitions For the purposes of the present document, the following terms and definitions apply: base station: piece of equipment providi
22、ng simultaneous, bi-directional network access to mobile stations. block: fixed-length sequence of bytes from a MAC PDU. 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
23、a base station. slot: minimum time period reserved for transmission by a single mobile station on a single frequency. frame: time period consisting of an integral number of frames between base station broadcasts specifying mobile station slot assignments. protocol data unit: set of parameters and/or
24、 data passed from peer to peer by a protocol primitive. protocol primitive: request, response, or informative message 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 m
25、essage sent between adjacent layers. uplink: general term meaning “from the mobile station to the base station“. ETSI 7 ETSI TS 1 O1 660 V1.2.1 (2000-04) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: BS DAWS IP LLC MAC MPDU MS PDU PHY PHY-LNK PHY-TPT
26、SAP SDU Base Station Digital Advanced Wireless Services Internet Protocol Logical Link Controller Medium Access Controller MAC Protocol Data Unit Mobile Station Protocol Data Unit Physical Layer PHY Link Management Service PHY Transport Service Service Access Point Service Data Unit 4 Link Managemen
27、t Services 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-TPT. BSPHY-LNK is responsible for generating and transmitting the synchronization block and for transmitt
28、ing any downlink data blocks provided by BSPHY-TPT. BSPHY-LNK is also responsible for receiving uplink data blocks and transferring them to BSPHY-TPT for uplink PDU reconstruction. MSPHY-LNK synchronizes with BSPHY-LNK based on received timing information. MSPHY-LNK is responsible for sending uplink
29、 blocks and receiving downlink blocks. MSPHY-LNK transfers downlink blocks to MSPHY-TPT for downlink PDU reconstruction. MSPHY-LNK performs power management, including support for power-saving modes of operation. MSPHY-LNK handles MAC hunt requests and cell service requests, and performs channel qua
30、lity monitoring. 4.1 Downlink MAC PDU transfers over the PHY Figure 2 provides a flow diagram illustrating the messages exchanged to transfer downlink MAC PDUs using dynamic bandwidth allocation. The message flow can be traced as follows: BSMAC sends a PHY-frame-assignment-request service primitive
31、to BSPHY during multiframe N containing slot assignments for multiframe N + 2. A slot assignment specifies whether the BS, a particular MS, or all MS are permitted to transmit in the slot; BSPHY sends the slot assignment information to the MSPHY during slot O of frame N + 1. MSPHY immediately transf
32、ers the slot assignment information to MSMAC; During frame N + 1, BSMAC issues MAC PDU transfer request service primitives to BSPHY to fill its assigned downlink slots during multiframe N + 2. BSPHY performs MAC PDU block encoding and any other tasks necessary to prepare the PDU blocks for transfer
33、during multiframe N + 2; BSPHY transfers PHY PDU blocks to MSPHY in its assigned slots during frame N + 2; MSPHY recreates each downlink MAC PDU and sends it to MSMAC. ETSI 4.2 8 BS-MAC BS-PHY Slot Assignments (MF N+2) _- MAC PDU Transfer i MAC PDU Transfer PHY PDU Transfer I PHY PDUTransfer * ETSI
34、TS 1 O1 660 V1.2.1 (2000-04) MS-MAC Slot Assignments (MF N+2) MAC PDU Transfer MAC PDU Transfer Figure 2: Downlink MAC PDU Transfers Using Dynamic Bandwidth Allocation Uplink MAC PDU transfers over the PHY Figure 3 provides a flow diagram illustrating the messages exchanged to transfer uplink MAC PD
35、Us using dynamic bandwidth allocation. The message flow can be traced as follows: i) BSMAC sends a PHY-frame-assignment-request service primitive to BSPHY during frame N containing slot assignments for frame N + 2. A slot assignment specifies whether the BS, a particular MS, or all MS are permitted
36、to transmit in the slot; 2) BSPHY sends the slot assignment information to the MSPHY during slot O of multiframe N + 1. MSPHY immediately transfers the slot assignment information to MSMAC; 3) During frame N + 1, MSMAC issues MAC PDU transfer request service primitives to MSPHY to fill its assigned
37、uplink slots during frame N + 2. MSPHY performs MAC PDU block encoding and any other tasks necessary to prepare the PDU blocks for transfer during frame N + 2; 4) MSPHY transfers PHY PDU blocks to the BSPHY in its assigned slots during frame N + 2; 5) BSPHY reassembles the uplink MAC PDUs from the r
38、eceived PHY PDUs and sends them to BSMAC. ETSI 9 Usage Source Destination Service Access Point Multiple Outstanding SDU Parameters BS-MAC BS-PHY BS and MS MAC Layer PHY Layer A No MPDU slot number ETSI TS 1 O1 660 V1.2.1 (2000-04) MS-PHY MS-MAC Slot Assignments (MF N+2) N _- MAC PDU Transfer MAC PDU
39、 Transfer PHY PDU Transfer “ PHY PDUTransfer I Figure 3: Uplink MAC PDU Transfers Using Dynamic Bandwidth Allocation 5 Transport Services The PHY transport service (PHY-TPT) performs all of the operations necessary on the send side to prepare the data blocks associated with a PDU for transmission ov
40、er 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 such as encodingldecoding and interleavinglde-interleaving. PHY-TPT shall implement an encodingldecoding scheme which permits the
41、detection, but not necessarily the correction, of a bit error in a block. PHY-TPT shall pass received block condition information along with block data to the MAC. 6 6.1 6.1.1 Service Prim it ives Pr Pl mit ive Definitions Y-t ransfe r-req uest This primitive is used by the MAC layer to pass a MPDU
42、to the PHY layer for transfer to one or more peer PHY SAP As. The slot number specified is in the next frame. ETSI 10 Usage Source Desti nation ETSI TS 1 O1 660 V1.2.1 (2000-04) BS and MS PHY Layer MAC Layer 6.1.2 PHY-transfer-confirm SDU Parameters transfer-receiptack kaue This primitive acknowledg
43、es the receipt of the MPDU associated with a PHY-transfer-request. It does not indicate that the MPDU has been transferred to one or more peer SAPS. BS and MS 6.1.3 PHY-transfer-indication Destination Service Access Point SDU Parameters MAC Layer A MPDU I Source I PHY Laver I Usage Source Destinatio
44、n Service Access Point Multiple Outstanding SDU Parameters MS MAC Layer PHY Layer B No This primitive is used by the PHY to pass a received MPDU to the MAC layer. 6.1.4 PHY-hunt-request This primitive tells the PHY to report adjacent cell signal strength and quality. 6.1.5 PHY-hunt-confirm Destinati
45、on MAC Layer This primitive reports adjacent cell signal strength and quality. ETSI 11 Usage Source Destination Service Access Point Multiple Outstanding SDU Parameters ETSI TS 1 O1 660 V1.2.1 (2000-04) MS MAC Layer PHY Layer B No base-station- ID 6.1.6 PHY-service-request Usaae MS This primitive te
46、lls the PHY to camp on the BS specified by basestation-ZD. Usage Source Destination Service Access Point Multiple Outstanding SDU Parameters 6.1.7 PHY-service-confirm BS MAC Layer PHY Layer B No slot assignments I Source I PHY Laver I I Destination I MAC Laver I I Service Access Point I B I I SDU Pa
47、rameters I service result I This primitive confirms a service request. 6.1.8 PHY-service-indication This primitive is used by the PHY to provide the MAC with the latest service status. 6.1.9 PHY-slot-assignment-request This service primitive defines the uplink and downlink slot assignments for a fra
48、me. If the primitive is issued during frame N, then the assignments are for slots in frame N + 2. ETSI 12 Usage Source Destination Service Access Point SDU Parameters ETSI TS 1 O1 660 V1.2.1 (2000-04) BS PHY Layer MAC Layer B slot assignment result 6.1.1 O PHY-slot-assignment-confirm This primitive
49、confirms a slot assignment request. 6.2 Parameter Definitions 6.2.1 transfer-receipt-ack transfer-receiptack O Isuccess: receipt acknowledged 1 Ifailure: transfer request already pending 6.2.2 base-station-ID This parameter specifies a particular DAWS BS. 6.2.3 slot-assignment-result slot-assignment result O Isuccess: slots defined 1 Ifailure: could not complete request 6.2.4 slot-assignments This parameter defines for each slot in a frame whether the BS, a particular MS, or all MS are permitted to transmit during the slot. 6.2
