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Content for  TR 25.703  Word version:  12.0.0

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0  Introductionp. 4

At present Cell Broadcast is used for ETWS/CMAS/PWS area warning systems. For the macro network this presents little problem, despite the fact that a warning area may contain a large number of cells in a macro network.
Moreover the radio access parameters broadcast over the air in a 3G macro network have traditionally been planned before deployment and change only rarely.
The same as above is also applicable for deployments with HNBs, and also in this deployment it is possible to plan that the radio access parameters broadcasted over the air.
The use of the Emergency Area ID list concept has a number of benefits to operators that are not currently present in 3G, including:
  1. The address list size may be controlled by the use of Emergency Area IDs;
  2. The Emergency Area ID allows the grouping of cells other than by TAI.
Increased harmonization between LTE and 3G would also allow an operator to re-use their Emergency Area ID list across RATs, which is particularly beneficial in the case of co-located cell sites or cell supporting multi-RAT operation.
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1  Scopep. 5

The present document captures the result of the Study on HNB Emergency Warning Area for UTRA (RP-131258 [2]).

2  Referencesp. 5

The following documents contain provisions which, through 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, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
RP-131258: "Revised SID Study on HNB Emergency Warning Area for UTRA", RP#61, Sep 2013, Source: Alcatel-Lucent, ip.access.
[3]
TS 25.419: "UTRAN Iu-BC interface: Service Area Broadcast Protocol (SABP) ".
[4]
R3-102728: "Max number of Cell IDs in Write Replace Warning msg", R3#69bis, Oct 2010, Source: Motorola.
[5]
TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)".
[6]
R3-140302: "TP TR 25.703. Analysis of introducing grouping to the RAN and CN for Emergency Cell Broadcast", R3#83, Feb 2014, Source: ip.access.
[7]
TS 23.003: "Numbering, addressing and identification".
[8]
TS 25.467: "UTRAN architecture for 3G Home Node B (HNB); Stage 2".
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3  Definitions and abbreviationsp. 5

3.1  Definitionsp. 5

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply.
A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.

3.2  Abbreviationsp. 5

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply.
An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
ACS
Auto Configuration Server
CBC
Cell Broadcast Centre
CBS
Cell Broadcast Service
OAM
Operations, Administration and Maintenance
RNC
Radio Network Controller
SA
Service Area
SABP
Service Area Broadcast Protocol
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