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3GPP TS 29.168. Cell Broadcast Center interfaces with the EPC – Stage 3, specifies the procedures and<br />
application protocol between the Cell Broadcast center and the MME for Warning Message Transmission,<br />
including the messages, information elements and procedures needed to support CMAS.<br />
3GPP TS 36.300. E-UTRA and E-UTRAN – Overall description – Stage 2, specifies the signaling<br />
procedures for the transfer of warning messages from the MME to the eNodeB. The signaling<br />
procedures support CMAS operations.<br />
3GPP TS 36.331. E-UTRA Radio Resource Control (RRC) – Protocol specification, specifies the radio<br />
resource control protocol for UE-to-E-UTRAN radio interface and describes CMAS notification and<br />
warning message transfer.<br />
3GPP TS 36.413. E-UTRAN – S1 Application Protocol (S1AP), specifies the E-UTRAN radio network<br />
layer signaling protocol between the MME and eNodeB, and describes the warning message transfer<br />
needed for CMAS.<br />
3GPP participants are working to complete these specifications and other UE procedures for supporting<br />
PWS and CMAS.<br />
ATIS WTSC-G3GSN will develop a Standard for a CMAS via LTE Broadcast Capability Specification.<br />
This Standard will map the CMAS application level messages to the LTE warning message transfer<br />
protocol (i.e. for CMAS).<br />
This ATIS WTSC-G3GSN effort had an anticipated completion date of December 31, 2010. This takes<br />
into account the time needed for completion of the ongoing 3GPP standards development on warning<br />
message broadcast for LTE.<br />
ATIS WTSC G3GSN and TIA TR45.8 Subcommittees in conjunction with FEMA were also jointly<br />
developing a testing certification specification for the Reference Point C interface between the Federal<br />
Alert GW and the CMSP GW based upon the requirements defined in J-STD-101. This specification had<br />
an anticipated completion date of December 31, 2010.<br />
B.2.3 LOCATION SERVICES OVER EPS<br />
3GPP GSM-UMTS standards had supported Location Services (LCS) architecture for the positioning of<br />
mobile devices since Rel-4. With the introduction of EPS in 3GPP Rel-8, a control plane LCS architecture<br />
for the EPS was introduced in 3GPP Rel-9. This control plane LCS architecture for the EPS is shown in<br />
Fig. B.2. The new Rel-9 interfaces SLg and SLs allows the EPS control plane element (MME) to<br />
interconnect with the LCS core network elements which make location services using the positioning<br />
functionality provided by the E-UTRAN access possible.<br />
www.4gamericas.org February 2011 Page 119
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