发明名称 Method And System For Providing Route Alternatives While Using A Cell Phone
摘要 A method and system in accordance with the present invention integrates information from cell phone coverage maps with a user's GPS system, thereby making possible the suggestion of alternative routes based on coverage strength and chances of dropping calls in different geographical areas. The method and system in accordance with the present invention can also generate warnings if a user is approaching an area of low or nonexistent coverage, so that the user can take action, such as utilizing a different route or telling the party on the line that the connection may be dropped or disconnected.
申请公布号 US2009023456(A1) 申请公布日期 2009.01.22
申请号 US20070781167 申请日期 2007.07.20
申请人 INTERNATIONAL BUSINESS MACHINES CORPORATION 发明人 SEACAT LISA ANNE;BHOGAL KULVIR S.;PETERSON ROBERT
分类号 G01C21/34 主分类号 G01C21/34
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