ETSI GSM 05 02-1993 See PRI-ETS 300 030《参见PRI-ETS 300 030》.pdf

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1、m 3404583 00801149 b75 Released: July 1, 1993 GSM 05.02 Version: 4.3.0 Date: July 1993 Work Item No: European digital cellular telecommunication system (phase 2); Multiplexing and Multiple Access on the Radio Path ETSI European Telecommunications Standards Institute ETSI Secretariat: F - 06921 Sophi

2、a Antipolis Cedex . France TP. + 33 92 94 42 00 TF. + 33 93 65 47 16 Tx. 47 00 40 F This is an unpublished work the copyright in which vests in the European Telecommunications Standards Institute. All rights reserved. The information contained herein is the propetry of ETSI and no part may be reprod

3、uced 01 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 embodied. 3404583 OOBOL50 377 W Page 3 GSM 05.M (4.3.0): July 1993 Contents 1.scope 5 2.Gener al . 5 3 .

4、Logical channels . 5 3.1General . 5 3.2 Traffic channels . 5 3.2.1 General . 5 3.2.2 Speech traffic channels 5 3.2.3 Data traffic channels 5 3.3 Control channels 6 3.3.1 General . 6 3.3.2 Broadcast channels 6 3.3.2.1 Frequency correction channel (FCCH) 6 3.3.2.2 Synchronization channel (SCH) 6 3.3.2

5、.3 Broadcast contrd channel (BCCH) 6 3.3.3 Common control type channels, known when combined as a common control channel (CCCH). 7 3.3.4 Dedicated control channels 7 3.3.5 Cell Broadcast Channel (CBCH) 7 3.4 Combination of channels 7 4 . The physical resource 7 4.1 General . 7 4.2 Radio frequency ch

6、annels . 8 4.2.1 Cell allocation and mobile allocation . 8 4.2.2 Downlink and uplink 8 4.3 Timeslots and TDMA frames 8 4.3.1 General. 8 4.3.2 Timeslot number 8 4.3.3 TDMA frame number 8 5 . Physicalchannels 9 5.1 General . 9 5.2Bursts 9 5.2.1 General . 9 5.2.2 Types of burst and burst timing 9 5.2.3

7、 Normal burst (NB) . 9 5.2.4 Frequency correction burst (FB) 10 5.2.5 Synchronization burst (SB) . 1 0 5.2.6 Dummy burst 11 5.2.7 Access burst (AB) . 11 5.2.8 Guard period . -11 5.3 Physical channels and bursts -12 5.4 Radio frequency channel sequence. . 12 5.5 Timeslot and TDMA frame sequence . 12

8、5.6.1 General -12 5.6 Parameters for channel definition and assignment 12 5.6.2 General parameters 12 5.6.3 Specific parameters 13 Previous page is blank Page . GSM 05.02 (4.3.0): July 1993 3YOY583 0080151 223 6 . Mapping of logical channels onto physical channels . 13 6.1 General . 13 6.2 Mapping i

9、n frequency of logical channels onto physical channels 13 6.2.1 General 13 6.2.2 Parameters 13 6.2.3 Hopping sequence generation 13 6.2.5 Change in the frequency allocation of a base transceiver station . 15 6.3 Mapping in time of logical channels onto physical channels . 15 6.3.1 General 15 6.3.2Ke

10、ytothemappingtableofsection7 15 6.3.3Mapping ofTCH/F9.6,TCH/F4.8,TCH/H4.8 andTCHM2.4 16 6.3.4 Mapping of BCCH data 16 6.3.5 Mapping of SID Frames 16 6.4 Permitted channel combinations . 16 6.5 Operation of channels and channel combinations 17 6.5.1 General 17 6.5.2 Determination of CCCH-GROUP and PA

11、GING-GROUP 18 6.5.3 Determination of specific paging muftiframe and paging Mock index 18 6.5.4 Short Message Service Cell Broadcast (SMSCB) 18 6.2.4 Specific Cases . 15 AnnexA . Abbreviations . 33 = 3404583 0080152 1bT M Page 5 GSM 05.02 (4.3.0): July 1993 I. Scope This technical specification defin

12、es the physical channels of the radio subsystem required to support the logical channels. It includes a description of the logical channels and the definition of frequency hopping, TDMA frames, timeslots and bursts. 2. General The radio subsystem is required to support a certain number of logical ch

13、annels that can be separated into two overall categories as defined in GSM 04.03: i) The traffic channels (TCHs). i) The control channels. More information is given about these logical channels in section 3 which also definec a number of special channels used by the radio subsystem. Section 4 of thi

14、s document describes the physical resource available to the radio subsystem, section 5 defines physical channels based on that resource and section 6 specifies how the logical channels shall be mapped onto physical channels. Figure 1 depicts this process. 3. Logical channels 3.1 General This section

15、 describes the logical channels that are supported by the radio subsystem. 3.2 Traffic channels 3.2.1 General Traffic channels (TCHs) are intended to carry either encoded speech or user data. Two general forms of traffic channel are defined: i) i) Full rate traffic channel (TCHF). This channel carri

16、es information ai a gross raie of 22.8 kbits/s. Haif rate traffic channel (TCHN). This channel carries information at a gross rate of 11.4 kb#s. The specific traffk channels available in the categories of speech and user data are dened in the sections following. 3.2.2 Speech traffic channels The fol

17、lowing traffic channels are defined to carry encoded speech: i) i) Full rate traffic channel for speech (TCH/FS). Half rate traffic channel for speech (TCH/HS). 3.2.3 Data traffic channels The following traffic channels are defined to carry user data : i) i) i) iv) v) Full rate traffic channel for 9

18、.6 kbit/s user data (TCH/F9.6). Full rate traffc channel for 4.8 kbit/s user data (TCH/F4.8). Haif rate traffic channel for 4.8 kbit/s user data (TCH/H4.8). Half rate traffic channel for 2.4 kbit/s user data (TCH/H2.4). Full rate traffic channel for 2.4 kbWs user data (TCH/F2.4) = 3404583 0080l153 O

19、Tb m Page 6 GSM 05.02 (4.3.0): July 1993 3.3 Control channels 3.3.1 General Control channels are intended to carry signalling or synchronization data. Three categories of contrd channel are defined: broadcast, common and dedicated. Specific channels within these categories are defined in the section

20、s following. 3.3.2 Broadcast channels 3.3.2.1 Frequency correction channel (FCCH) The frequency correction channel carries information for frequency correction of the mobile station. It is required only for the operation of the radio subsystem. 3.3.2.2 Synchronization channel (SCH) me synchronizatio

21、n channel carries information for frame synchronization of the mobile station and identification of a base transceiver station. It is required only for the operation of the radio subsystem. Specifically the synchronization channel shall contain two encoded parameters: a) Base transceiver station ide

22、ntity code (BSIC): 6 bits (before channel coding) consists of 3 bits of PLMN colour code with range O to 7 and 3 bits of BS coiour code with range O to 7 as defined in GSM 03.03. b) Reduced TDMA frame number (RFN): 19 bits (before channel coding) = T1 (1 1 bits) T2 (5 bits) range O to 25 = FN mod 26

23、 T3 (3 bits) range O to 4 = (T3 - 1) div 10 range O to 2047 = FN div ( 26 x 51) where T3 (6 bits) range O to 50 = FN mod 51 and FN = TDMA frame number as defined in section 4.3.3. GSM 04.06 and GSM 04.08 specify the precise bit ordering, GSM 05.03 the channel coding of the above parameters and GSM 0

24、5.1 O defines how the TDMA frame number can be calculated from T1, T2, and T3. 3.3.2.3 Broadcast control channel (BCCH) The broadcast control channel broadcasts general information on a base transceiver station per base transceiver station basis. Of the many parameters contained in the BCCH, the use

25、 of the following parameters, as defined in GSM 04.08 are referred to in section 6.5: a) CCCHCONF which indicates the organization of the common control channels: From this parameter, the number of common contrd channels (BS-CC-CHANS) and whether or not CCCH or SDCCH are combined (BS-CCCH-SDCCHCOMB

26、= true or false) are derived as follows: 8 3404583 0080L54 T32 m Page 7 GSM 05.02 (4.3.0): July 1993 CCCH-CONF BSCC-CHANS BSCCCH-SDCCHCOMB o00 001 o1 o 100 110 false true false false false b) BS-AG-BLKS-RES which indicates the number of blocks on each common control channel reserved for access grant

27、 messages: 3 bits (before channel coding) range O to 7. c) BS-PA-MFRMS which indicates the number of 51 TDMA frame muitiframes between transmission of paging messages to mobiles of the same paging group: 3 bits (before channel coding) range 2 to 9. 3.3.3 Common control type channels, known when comb

28、ined as a common control channel (CCC H) : i) i) iii) Paging channel (PCH): Downlink only, used to page mobiles. Random access channel (RACH): Uplink only, used to request allocation of a SDCCH. Access grant channel (AGCH): Downlink only, used to allocate a SDCCH or directly a TCH. 3.3.4 Dedicated c

29、ontrol channels i) i) iii) iv) v) vi) vi) viii) Slow, TCH/F associated, control channel (SACCH/TF) Fast, TCH/F associated, control channel (FACCH/F) Slow, TCH/H associated, control channel (SACCHm) Fast, TCH/H associated, control channel (FACCH/H) Stand alone dedicated control channel (SDCCH/8) Slow

30、, SDCCHI8 associated, control channel (SACCH/C8) Stand alone dedicated control channel, combined with CCCH (SDCCHI4) Slow, SDCCH/4 associated, control channel (SACCH/C4) 3.3.5 Cell Broadcast Channel (CBCH) The CBCH, downlink only, is used to carry the short message service cell broadcast (SMSCB). Th

31、e CBCH uses the same physical channel as the SDCCH. 3.4 Combination of channels Only certain combinations of channels are allowed as defined in GSM 04.03. Section 6.4 lists the combinations in relation to basic physical channels. 4. The physical resource 4.1 General The physical resource available t

32、o the radio subsystem is an allocation of part of the radio spectrum. This resource is partitioned both in frequency and time. Frequency is partitioned by radio frequency channels (RFCHs) divided into bands as defined in GSM 05.05. Time is partitioned by timeslots and TDMA frames as defined in secti

33、on 4.3 of this document. Page 8 GSM 05.M (4.3.0): July 1993 3YOY563 0080355 979 4.2 Radio frequency channels 4.2.1 Cell allocation and mobile allocation GSM 05.05 defines radio frequency channels (RFCHs), and allocates numbers to all the radio frequency channels available to the system. Each cell is

34、 allocated a subset of these channels, defined as the cell allocation (CA). One radio frequency channel of the cell allocation shall be used to carry synchronization information and the BCCH, this shall be known as BCCH carrier. The subset of the cell allocation, allocated to a particular mobile, sh

35、all be known as the mobile allocation (MA). 4.2.2 Downlink and uplink The downlink comprises radio frequency channels used in the base transceiver station to mobile station direction. The uplink comprises radio frequency channels used in the mobile station to base transceiver station direction. 4.3

36、Timeslots and TDMA frames 4.3.1 General A timeslot shall have a duration of 3/5200 seconds ( 577 ps). Eight timeslots shall form a TDMA frame ( 4.62 ms in duration). At the base transceiver station the TDMA frames on all of the radio frequency channels in the downlink shall be aligned. The same shal

37、l apply to the uplink (see GSM 05.10). At the base transceiver station the statt of a TDMA frame on the uplink is delayed by the fed period of 3 timeslots from the statt of the TDMA frame on the downlink (see Figure 2). At the mobile station this delay will be variable to allow adjustment for signal

38、 propagation delay. The process of adjusting this advance is known as adaptive frame alignment and is detailed in GSM 05.10. The staggering of TDMA frames used in the downlink and uplink is in order to allow the same timeslot number to be used in the downlink and uplink whilst avoiding the requireme

39、nt for the mobile station to transmit and receive simultaneously. The period includes time for adaptive frame alignment, transceiver tuning and receivebransmit switching (see Figure 4). 4.3.2 Timeslot number The timeslots within a TDMA frame shall be numbered from O to 7 and a particular timeclot sh

40、all be referred to by its timeslot number (TN). 4.3.3 TDMA frame number TDMA frames shall be numbered by a frame number (FN). The frame number shall be cyclic and shall have a range of O to FN-MAX where FN-MAX = (26 x 51 x 2048) -1 = 271 5647 as defined in GSM 05.1 O. The frame number shall be incre

41、mented at the end of each TDMA frame. The complete cycle of TDMA frame numbers from O to FN-MAX is defined as a hyperframe. A hyperframe consists of 2048 superframes where a superframe is defined as 26 x 51 TDMA frames. A 26 TDMA frame multiframe is used to support traffic and associated control cha

42、nnels and a 51 TDMA frame multiframe is used to support broadcast, common control and stand alone dedicated control (and their associated control) channels. Hence a superframe may be considered as 51 traffic/associated control multiframes or 26 broadcastkommon control muftirames. Page 9 GSM 05.02 (4

43、.3.0): July 1993 = 3404583 0080356 805 W The need for a hyperframe of a substantially longer period than a superframe arises from the requirements of the encryption process which uses FN as an input parameter. 5. Physical channels 5.1 General A physical channel uses a combination of frequency and ti

44、me division multiplexing and is defined as a sequence of radio frequency channels and time slots. The complete definition of a particular physical channel consists of a description in the frequency domain, and a description in the time domain. The description in the frequency domain is addressed in

45、section 5.4, the description in the time domain is addressed in section 5.5. 5.2 Bursts 5.2.1 General A burst is a period of R.F. carrier which is modulated by a data stream. A burst therefore represents the physical content of a timeslot. 5.2.2 Types of burst and burst timing A timeslot is divided

46、into 156.25 bit periods. A particular bit period within a timeclot is referenced by a bit number (BN), with the first bit period being numbered O, and the last (1/4) bit period being numbered 156. In the sections following the transmission timing of a burst within a timeslot is defined in terms of b

47、it number. The bit with the lowest bit number is transmitted first. Different types of burst exist in the system. One characteristic of a burst is its useful duration. This document, in the sections following, defines four full bursts of 147 bits useful duration, and one short burst of 87 bits usefu

48、l duration. The useful part of a burst is defined as beginning from haif way through bit number O. The definition of the useful part of a burst needs to be considered in conjunction with the requirements placed on the phase and amplitude characteristics of a burst as specified in GSM 05.04 and 05.05

49、. The period between bursts appearing in successive timeslots is termed the guard period. Section 5.2.8 details constraints which relate to the guard period. 5.23 Normal burst (NB) Bit Number o- 2 3 - 60 61 - 86 87 -144 145 - 147 (148 - 156 (BN) Length of field 3 58 26 58 3 8,25 Contents of field Definition tail bits (below) encrypted bas (e0 e57) training sequence bits (below) encrypted bits (e58 el 15) guard period (bits) section 5.2.8) 05.03 05.03 tail bits (below) - where the tail bits are defined as modulating bits with states as follows : BNO, BN1, BN2) = (O, o, o and IBN