1、m 3404583 0070501 423 m . ETSI/TC SMG Released by : ETSI/PT 12 Release date: February 1992 RELEASE NOTE Recommendation GSM 04.04 MS - BSS Layer 1 - General Requirements Previously distributed version : 3.3.4 (Updated Release 1/90) New Released version February 92 : 3.3.4 (Release 92, Phase 1) I I 1
2、No changes since the previously distributed version. 3404583 0070502 3bT ELECOMMUNICATION STANDARD 2nd FINAL DRAFT prl-ETS 300 078 February 1992 Source: ETSI TC-SMG Reference: GSM 04.04 UDC: 621.396.21 Key words: European Digital Cellular Telecommunications System, Global System for Mobile Communica
3、tions (GSM) European digital cellular telecommunications system (phase I ); MS-BSS Layer I - General Requirements ETSI European Telecommunications Standards Institute ETSI Secretariat: B.P. 152 . F - 06561 Valbonne Cedex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx. 47 0040 F Previous page
4、is blank European Telecommunications Standards Institute 1 992. All rights reserved. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be
5、 embodied. 2nd Final draft prl-ETS 300 078: 1992 3404583 0070503 2Tb Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Standards Managemen
6、t Dept.“ at the address shown on the title page. m IYOEI 0070so4 132 m 2nd Final draft prl-ETS 300 078:1992 Foreword This second Final draft Interim European Telecommunication Standard II-ETS) has been produced by the Special Mobile Group (SMG), a Technical Committee of the European Telecommunicatio
7、ns Standards Institute (ETSI). The final drafts dealing with the GSM system were adopted by vote in May 1991 but were not published. This was because amendments, agreed by ETSI TC-SMG at subsequent meetings, were made to some of the drafts. However, other drafts have not been amended since the first
8、 vote. This updated draft is now considered to be stable enough for submission to second vote. This I-ETS describes the rate adaptation functions used for adapting terminal interface data rates to the data rates at the Mobile Station- Base Station System (MS-BSS) interface within the European digita
9、l cellular telecommunications system (phase 1 1. Reference is made within this I-ETS to the,following technical specifications (NOTE 1): GSM 02.13 Subscription to the services of a GSM PLMN. GSM 03.13 Discontinuous reception (DRX) in the GSM system. GSM 03.20 Security related network functions. GSM
10、04.03 Mobile Station - Base Station System (MS-BSS) interface: Channel structures and access capabilities. GSM 04.05 Mobile Station - Base Station System (MS-BSS) data link layer - general aspects. GSM 04.06 MS - BSS data link layer specification. GSM 04.08 Mobile radio interface - layer 3 specifica
11、tion. GSM 04.1 2 Cell broadcast short message service support on mobile radio interface. GSM 05.01 Physical layer on the radio path (general description). GSM 05.02 Multiplexing and multiple access on the radio path. GSM 05.03 Channel coding. GSM 05.05 Radio transmission and reception. GSM 05.08 Rad
12、io sub-system link control. GSM 05.10 Radio sub-system synchronisation. GSM 05.10 Radio sub-system synchronisation. The above specifications are normative. NOTE 1: ETSI has constituted stable and consistent documents which give technical specifications for the implementation of the European digital
13、cellular telecommunications system. Historically, these documents have been identified as “GSM recommendations“. 3rtOY583 O070505 079 I 2nd Final draft prl-ETS 300 078:1992 Some of these recommendations may subsequently become Interim European Telecommunication Standards (J-ETSs) or European Telecom
14、munication Standards (ETSs), whilst the others will be renamed ETSI-GSM Technical Specifications. These ETSI-GSM Technical Specifications are, for editorial reasons, still referred to as GSM recommendations in some current GSM documents. The numbering and version control system used for ETSI-GSM Tec
15、hnical Specifications is the same as that used for GSM recommendations. NOTE 2: Items in this draft indicated as not complete,. or requiring further study or work, are not required for the Phase 1 implementation of the European digital cellular telecommunications system. 3404583 0070506 TO5 4 ETSI/G
16、SM version 3.3.4 Recommendation GSM 04.04 Title LAYES 1 - GENERAL REQUIRPIENTS Date February 1992 List of contents 1. Scope 2. Interfaces to the physical layer 3. Service of the physical layer 4. Primitives of the physical layer 5. Physical layer procedures 6. Physical layer protocol header 7. Block
17、 transmission 8. Vocabulary Original language English Number of pages: 19 W 3404583 O070507 941 . GSM 04.04 - version 3.3.4 - page 2 L MPH-primitives PH-primitives 1 TCH 2 SCOPE This Recommendation defines the service offered by the physical layer (GSM 05-series of Recommendations) of the MS-BS inte
18、rface (GSM 05- and Obseries of Recommendations). Its main objective is to be a guidance for the interface between the GSM Recommendations in the 05-series and the 04-series. It also specifies the format of signalling channels and the order of bit transmission. When the mention for “further study“ or
19、 “FS“ or “FFS“ is present throughout this document this means this is not relevant for ETSI-GSM phase 1 standard. As far as possible, this recommendation makes use of the layering principles of the Reference Model for Open System Interconnection (OSI) as contained in CCITT recommendations X.200 and
20、X.210. The physical layer (layer i) is the lowest layer in the OS1 Reference Model and it supports all functions required for the transmission of bit streams on the physical medium. These bit streams are transferred on traffic and control channels as defined in Rec. GSM 04.03. Note : For GSM applica
21、tion the physical layer may also be referred to as the radio subsystem. However, the radio subsystem supports functions additional to those described in this Recommendation. The physical layer interfaces the Data Link Layer functional units of the application (figure 2.1). and the supported radio re
22、sources management (layer 3) to other I Data Link Layer figure 2.1 Interfaces with the Physical Layer W 3404583 0070508 888 m 2.1 2.2 2.3 GSM 04.04 - version 3.3.4 - page 3 “he physical layer interfaces the data link layer. On this interface control channels are supported. The data link layer is spe
23、cified in Rec. GSM 04.05 and 04.06. Communication between the Physical Layer and the Data Link Layer is in an abstract way performed by means of PH- primitives defined do not constrain implementations. Note : The terms physical layer and layer 1, and data link layer and layer 2, will be used synonym
24、ously in this recommendation. The PH-primitives exchanged between the physical layer and the data link layer are used for the transfer of layer 2 frames. They are also used to indicate the establishment of channels to layer 2. The physical layer interfaces the radio resource management (RR- manageme
25、nt) entity of layer 3 in the MS and in the network. Communication is performed in an abstract way by means of MPH- primitives. They do not constrain implementations. The primitives exchanged with the RR-management entity are related to the assignement of channels, physical layer system information (
26、including measurement results), etc. to 0- The physical layer interfaces other functional units in the MS and in the network for supporting traffic channels. These interfaces are described in the 06 and O7 series of recommendations. 3 3404583 0070509 714 = GSM 04.04 - version 3.3.4 - page 4 The phys
27、ical layer supports transfer of bit streams on the radio medium according to the Recommendations of the 05-series. The scope of the 05- series of Recommendations is the definition of a framework for operation on the radio medium. The application of this framework on the radio medium results in a tra
28、nsmission service. General characteristics of the service obtained by applying the framework of the 05-series at the operation on the radio medium are described in this section. In the Reference Model for Open System Interconnection, Service Access Points (SAPS) of a layer are defined as gates throu
29、gh which services are offered to an adjacent higher layer (figure 3.1). Through a SAP the physical layer offers a service to the data link layer. The SAP is used both for the control of the service providing entity (in case this is the physical layer; commands related to the establishment and releas
30、e of channels) and the transfer of the transfer of bits). The physical layer service access points defined in this Recommendation Service Access Points; the layer 3 RR-management instead of the data link layer controls the SAPs (establishment and release of channels). data (in case of the physical l
31、ayer; differ from the OS1 physical layer Service Access Point principle b On the physical layer of the GSM system a SAP is defined between the physical layer and the data link layer for each control channel (figure 3.2). The characteristics of SAPs (channels) are listed in GSM Rec. 04.03. H 3404583
32、0070510 436 m GSM 04.04 - version 3.3.4 - page 5 Data Link Layer BCCH PCH+AGCH RACH SDCCH SACCH FACCH -I- -/- -I- -/- -I- - 1- I I I / I - -r-r-r-r-r-rl Physical layer figure 3.2 SAPs between the physical layer and the data link layer in the MS * The physical layer offers a transmission service on a
33、 limited set of logical channels. The BS and MS access capabilities and the characteristics of logical channels (SAPs) are defined in GSM Rec. 04.03. Note: Between 04.03 and the 05-series there is a slight difference in terminology. The channels mentioned in 04.03 are logical channels according to t
34、he 05-series (especially 05.02). The CCCH, a channel name commonly used in the Obseries, covers the logical channels of the type RACH, PCH and AGCH. Logical channels are multiplexed on physical channels. Physical channels are the units scheduled on the radio medium. Some are reserved by the network
35、for common use (a combination of CCCH and BCCH), others are assigned to connections with MSs (dedicated physical channels). In time the combination of logical channels used on an assigned dedicated physical channel may change. Allowed combinations of logical channels on a dedicated physical channel
36、are defined in 04.03. Data on SAPs of control channels is exchanged in discrete blocks with a size of 23 or 21 (SACCH) octets. Synchronisation between layer 1 and layer 2 is provided for piggy- backing of RR (receive ready) frames, and the starting of timers (T200). See also recommendation GSM 04.06
37、. M 3VOV583 0070511 372 GSM 04.04 - version 3.3.4 - page 6 3.2.1 * * Establishment of Establishment of dedicated physical channels on the physical layer is GSM 04.08) . During operation on a dedicated physical channel physical layer measures and the signal quality of the used dedicated physical chan
38、nel. Measurements are transferred to layer 3, measurement control information is offered by layer 3. controlled by the radio resources management of layer 3 (Rec. the the signals of neighbouring base stations In idle mode the physical layer selects the best cell with its BCCH/CCCH in close co-operat
39、ion with layer 3* meeting requirements for PLMN selection specified in Rec. CtSM 02.13. The idle mode procedures are not modelled within this recommendation. Examples of procedures for cell selection are described in GSM Rec. 05.08. The physical layer performs automatic crossover. 3404583 0070512 20
40、9 GSM 04.04 - version 3.3.4 - page 7 4 VFS OF “Hl7 PEKSICBLLBYEB The Physical layer interacts with other entities as illustrated in figure 2.1. The interactions with the data link layer of Dm channels are shown in terms of primitives where the primitives represent the logical exchange of information
41、 and control between the physical layer and adjacent layers. They do not specify or constrain implementations. The interactions between the physical layer and layer 1 entities for Bm/Lm channels are for further study. For the physical layer two sets of primitives are defined: * Primitives between la
42、yer 1 and 2: PH - Generic name - Type: Parameters * Primitives between layer 1 and the RR-management layer 3 entity: MPH - Generic name - Type: Parameters The following primitive generic names are defined on the SAPS between the physical layer and the data link layer: a) PH-DATA: The PH-DATA primiti
43、ves are used on a SAP to pass message units containing frames used for data link layer peer-to-peer communications to and from the physical layer. b) PH-RANDOM ACCESS: The PH-RANDOM ACCESS (PH-RA) primitives are used on the SAP of the RACH to request and confirm (in the MS) the sending of a random a
44、ccess frame and to indicate (in the network) the arrival of a random access frame. The random access protocol is specified GSM Rec. 04.08. C) PH-CONNECT: The PH-COMJECT primitive is used on a SAP to indicate that the physical connection on the corresponding control channel has been established. d) P
45、H-READY-TO-SEND: The PH-READY-TO-SEND primitve is used by the physical layer to trigger if applicable piggy backing, the start of timer for layer 2 and the forwarding a data unit to layer 1. It is passed to layer 2 just before a new physical block is transmitted. 3404583 0070533 345 GSM 04.04 - vers
46、ion 3.3.4 - page 8 e 4.2 4.3 f) PH-EMPTY-FRAME: The PH-EMPTY-FRANE primitive can be used by the data link layer to indicate that no frame has to be transmitted after receiving the PH- READY-TO-SEND primitive. It enables polling of several layer 2 entities by layer 1 and support DTX. tv of laver 3 Th
47、e following primitive generic name is defined between layer 1 and the RR-management entity of layer 3 : a) ME“-INFORMATION: MPH-INMIRMATION (WH-INFO) primitives are used for the control of the physical layer by the RR-management of layer 3. This information activates and deactivates, configures and
48、deconfigures, throughconnects and disconnects physical and logical channels. It is also used for the transfer of measurements and measurement control information from layer 1 to layer 3. The primitive types efined in this Recommendation are: a) REQUEST: The REQUEST primitive type is used when a high
49、er layer is requesting a service from a lower layer. b) INDICATION: The INDICATION primitive type is used by a layer providing a service to notify the next higher layer of activities in the layer. This activities are directly related to the occurrence of a REQEST primitive on the peer-protocol side. c) RESPONSE: The RESPONSE primitive type is used by a layer to acknowledge receipt from the INDICATION primitive type. d) CONFIRM: The CONFIRM primitive type is used by the layer providing the requested service to confirm that the activity has been completed. 4.4 primi
