Different emergency alert messages may be provided to different mobile devices within a common geographic region subdivided into a plurality of inner regions. Each inner region may have different emergency alert messages and may be geographically located inside another region.
申请公布号
US8688071(B1)
申请公布日期
2014.04.01
申请号
US201213712488
申请日期
2012.12.12
申请人
AT&T INTELLECTUAL PROPERTY I, LP;AT&T INTELLECTUAL PROPERTY I, L.P.
发明人
DALY BRIAN KEVIN;MUSGROVE CHARLES PETER;SENNETT DEWAYNE A.
