1、 ETSI TS 101 975 V1.2.1 (2007-07)Technical Specification Terrestrial Trunked Radio (TETRA);RF Sensitive Area ModeETSI ETSI TS 101 975 V1.2.1 (2007-07) 2 Reference RTS/TETRA-01069 Keywords TETRA, radio, MS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax
2、: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than o
3、ne electronic version or in print. In any case of existing 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 dr
4、ive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present
5、 document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European
6、 Telecommunications Standards Institute 2007. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark o
7、f ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 101 975 V1.2.1 (2007-07) 3 Contents Intellectual Property Rights4 Foreword.4 Introduction 4 1 Scope 5 2 References 5 3 Definitions and abbreviations.5 3.1 Definitions5 3.2 Abbreviations .5 4 RF Sen
8、sitive Area modes .6 4.1 Introduction 6 4.2 Basic RF SA mode .6 4.3 Enhanced RF SA mode 6 Annex A (normative): Basic RF SA mode7 Annex B (normative): Enhanced RF SA mode9 Annex C (informative): Bibliography.12 History 13 ETSI ETSI TS 101 975 V1.2.1 (2007-07) 4 Intellectual Property Rights IPRs essen
9、tial 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 found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potential
10、ly 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 (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out b
11、y ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committ
12、ee Terrestrial Trunked Radio (TETRA). Introduction The present document seeks to address, on behalf of specific TETRA user groups, a general problem associated with transmissions of all wireless technologies because of the excessive susceptibility of some devices to interference from some RF transmi
13、tters in very close proximity. The interference occurs despite the transmitter of the wireless device being well within its specification. There also are other requirements within the wide scope of public safety operations to avoid transmissions from terminals while maintaining some level of communi
14、cations. It is intended to have optional operational modes for TETRA terminals which are required to operate in such RF sensitive areas (RF SAs). These RF SA modes include: modes in which all transmissions from the terminal are temporarily inhibited (Transmit-inhibit modes); a mode in which the term
15、inal operates at a pre-set low value of transmitted power (low-power mode). The contents of the present document define the requirements for basic and enhanced Transmit-inhibit (TxI) modes. It is intended that the requirements of low-power mode may be addressed in a future version of the present doc
16、ument and a later version may address aspects of network management, security implications and network enhancements, all relating to RF SA modes. The TETRA Release 1.3 standards are defined in TR 100 392-17-3 and TETRA Release 2.0 standards will be defined in TR 100 392-17-4. ETSI ETSI TS 101 975 V1
17、.2.1 (2007-07) 5 1 Scope The present document defines the requirements for basic and enhanced TxI modes. The present document is applicable to the specification of TETRA terminal equipment. 2 References The following documents contain provisions which, through reference in this text, constitute prov
18、isions of the present document. References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents whic
19、h are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 1 ETSI EN 300 392-10-21: “Terrestrial Trunked
20、Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 21: Ambience Listening (AL)“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: transmit-inhibit mode: mode of operation for a TE
21、TRA terminal in which all transmissions from the terminal are prohibited low-power mode: mode of operation for a TETRA terminal in which the transmit power output from the terminal is temporarily restricted to a low value 3.2 Abbreviations For the purposes of the present document, the following abbr
22、eviations apply: AL Ambience Listening DMO Direct Mode Operation I/O Input/Output MMI Man Machine Interface MS Mobile Station PEI Periferial Equipment Interface RF SA Radio Frequency Sensitive Area RF Radio Frequency SDS Short Data Service SwMI Switching and Management Infrastructure TMO Trunked Mod
23、e Operation TxI Transmit Inhibit ETSI ETSI TS 101 975 V1.2.1 (2007-07) 6 4 RF Sensitive Area modes 4.1 Introduction The requirements in the present document have arisen from some of the unique requirements of public safety users. In some cases, at safety critical situations in RF SAs, minimum commun
24、ication must be maintained, rather than insisting that users turn off their phones as is commonly done in airplanes and hospitals, etc. In an optional TxI mode all transmissions from a TETRA terminal would be temporarily inhibited. The terminal would be unable to initiate any calls or respond to mes
25、sages sent by SwMI or by other terminals and consequently the terminal would support only limited services. This option is intended primarily for the public safety community. It should be noted that this mode of operation is made possible due to the unacknowledged nature of some of TETRAs services.
26、This key capability provides an opportunity for TETRA to offer a TETRA receive-only mode to be used in particularly sensitive environments. In an optional low-power mode the transmit power output from the terminal would be temporarily restricted to a low value, so that the terminal causes no interfe
27、rence to sensitive devices in its vicinity. The actual low power value to be used would take account of particular regulatory/safety requirements and local conditions in individual environments. In low-power mode the terminal would continue to support all its TETRA services, provided that a viable t
28、wo-way communications link was maintained. Optionally, to support some public safety users need to ensure officer safety, the terminal could be programmed to accept an AL call setup whilst in TxI or low-power mode, to cancel this mode without any indication of this to the user and to continue with a
29、 AL call as defined in EN 300 392-10-21 1. TxI and low-power modes would apply to terminal equipment (i.e. MSs). Base station equipment is outside the scope of the present document. Minimum requirement specifications for various RF SA modes are contained in the annexes to the present document. The t
30、ables in the annexes indicate any impact on standardization. All requirements are to be considered minimum requirements, unless marked as “Optional“ in the notes columns of the tables in the annexes. Manufacturers are naturally free to offer additional functionality above these minimum requirements.
31、 4.2 Basic RF SA mode See annex A. 4.3 Enhanced RF SA mode See annex B.ETSI ETSI TS 101 975 V1.2.1 (2007-07) 7 Annex A (normative): Basic RF SA mode When in basic RF SA mode the TETRA terminal does not transmit RF energy under any circumstances and this requirement takes precedence over all other re
32、quirements in table A.1. The basic RF SA mode provides a TxI functionality. Basic RF SA requirements are based on a solution that: does not need any network signalling; does not provide MMI indications; and does not provide automatic restoration to normal mode if an emergency call set-up attempt is
33、made. The basic RF SA mode user requirements are presented in table A.1. Table A.1: Basic RF SA mode user requirements Feature Basic RF SA mode user requirement Impact on ETSI standard Remarks Activation of RF SA mode 1.1 Command Under manual control of terminal user. No Designed to avoid inadverten
34、t activation. No Automatically by the terminal, by deactivation of an AL call that was started when the MS was in RF SA mode, unless the user has manually deactivated the RF SA mode during the AL call. No No indication of activation of RF SA, Optional 1.2 Indication No alerts or display on terminal
35、MMI. No Clear and unambiguous indication (visual and/or tactile) to terminal user, e.g. by position of activation switch. No Use voice message sent by the terminal user to inform others before entering basic RF SA mode. No See note 5 De-activation of RF SA mode 2.1 Command Under manual control of te
36、rminal user. No Provide rapid, easy de-activation on demand. No Designed to avoid inadvertent de-activation. No By the terminal due to activation of an AL call. No No indication of deactivation of RF SA, Optional 2.2 Indication No alerts or display on terminal MMI. No Use voice message sent by the t
37、erminal user to inform others when returned to normal mode. No Optional, see note 5 2.3 Basic RF SA mode selection integrity There shall be no inadvertent change back from basic RF SA mode to normal mode, e.g. due to I/O signalling through any interface, operation of MMI switches, etc. with the exce
38、ption of the potential optional AL call activation, plus either: Option 1 There shall be no inadvertent change back from basic RF SA mode to normal mode due to power off, battery exhaustion or battery changes. Or Option 2 The state of being in basic RF SA mode shall be cancelled at switch-off or bat
39、tery removal or exhaustion (this would prevent a stolen terminal being fitted with a fresh battery and being used to eavesdrop on TMO communications in a particular cell or location area, until de-registered by the network or removed from TMO group addresses. It would also prevent a stolen terminal
40、being fitted with a fresh battery and being used to eavesdrop on DMO communications until removed from DMO group addresses). No ETSI ETSI TS 101 975 V1.2.1 (2007-07) 8 Feature Basic RF SA mode user requirement Impact on ETSI standard Remarks Calls supported (Trunked mode) Individual voice or calls a
41、re not supported in basic RF SA mode 3.1 Voice Calls Able to continue to receive unacknowledged Group Voice Calls in the group last selected before entering basic RF SA mode, including an emergency voice message from a unit within that talk-group. No See note 5 3.2 Data Calls Able to continue to rec
42、eive unacknowledged group data calls in the group last selected before entering basic RF SA mode. No Optional, see notes 1 and 5 3.3 SDS and status messages Able to continue to receive unacknowledged SDS and status messages in the group last selected before entering basic RF SA mode. No Optional, se
43、e note 1 Service aspects (Trunked mode) 4.1 Duration of service in RF SA mode As allowed by the network (e.g. network may de-register a terminal if it has not indicated its presence for e.g. 4 hours). No See note 4 4.2 Mobility 1 Group calls to the terminal will continue to be carried by the base st
44、ation cell that was selected when basic RF SA mode was entered. No See note 4 4.3 Mobility 2 If the terminal moves to a new cell within the current location area, Undeclared cell re-selection would apply. The terminal could receive unacknowledged group calls being carried by the new cell for other t
45、erminals. No See notes 2 and 4 4.4 Group Selection User can set the terminal to receive any group call of which it is a member, but actual reception of any group will be dependent on the mobility constraints (see features 4.2 and 4.3). No 4.5 Ambience Listening If the terminal receives an AL call se
46、tup command, the terminal will deactivate the RF SA mode and continue with the AL call. After the AL call is finished the terminal will return to the RF SA mode. No Optional, no indication of deactivation or activation of RF SA Direct Mode Individual voice and data calls and SDS messages are not sup
47、ported in basic RF SA mode 5.1 Voice Calls Able to continue to receive unacknowledged Group Voice Calls in any selected group, including an emergency voice message. No See note 3 5.2 Data Calls Able to continue to receive unacknowledged group data calls in any selected group. No Optional, see notes
48、1 and 3 5.3 SDS and status messages Able to continue to receive unacknowledged SDS and status messages in any selected group. No Optional, see notes 1 and 3 5.4 Group Selection User can set the terminal to receive any group of which it is a member and for which it is in range of the transmitting mas
49、ter. No NOTE 1: Provided there is no adverse development impact. NOTE 2: The minimum area in which an MS may be registered is termed its location area; this may correspond to a single cell or a group of cells. The total of all location areas in which the MS is registered and in which paging messages to the MS will be issued is termed its registration area. The network routes all messages to the called MS to its registration area. NOTE 3: Individual calls through a Gateway to a RF SA mode user in DMO would not be supported. This type of individual call wo
