# US 10,455,398 B1 · Location determination of a mobile device based on various parameters > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,398 B1 - Document ID: US10455398B1 - Status: Granted - Kind: B1 - Application number: 16/103,120 - Filed: 2018-08-14 - Granted: 2019-10-22 - Earliest claimed: 2016-08-03 - Assignees: West Corporation - Applicants: West Corporation - Inventors: Amar Nath Ray; William J. Eich; Gilbert Geiman - Web page: https://patentgrep.com/patent/US10455398B1 ## CPC - H04W 4/90: Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS] - H04W 4/02: Services making use of location information - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Locating a mobile device in the event of an emergency may be based on common location techniques, such as GPS and geolocation. Additional location techniques may be performed in a sample method of operation which may include determining location information and environmental factor information at a mobile device, recording the location information and the environmental factor information, calculating deviations for the location information and the environmental factor information based on pre-stored location information and pre-stored environmental information, and calculating a confidence factor based on the calculated deviations, determining the mobile device location based on the confidence factor. ## Claims ### Claim 1 A method comprising: calculating deviations for location information and environmental factor information at a mobile device based on pre-stored location information and pre-stored environmental information; calculating a confidence factor based on the calculated deviations; and determining the mobile device location based on the confidence factor; wherein the environmental factor information comprises at least one of luminosity, distance from walls, ceiling height of an indoor structure, indoor acoustic signatures dependent upon the distance from walls and ceiling height of the indoor structure, altitude, precipitation levels, allergen levels, and outdoor acoustic signatures dependent upon the altitude and precipitation levels; and wherein the pre-stored location information and pre-stored environmental information comprises data determined to be constant after readings gathered and recorded from successive events remain constant over a predefined time interval. ### Claim 2 (depends on 1) The method of claim 1, further comprising weighting the location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 3 (depends on 2) The method of claim 2, further comprising weighting the environmental location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 4 (depends on 1) The method of claim 1, wherein at least one of the indoor acoustic signatures and the outdoor acoustic signatures comprises an acoustic signature of at least one mechanical device or electrical device. ### Claim 5 (depends on 1) The method of claim 1, wherein the location information comprises at least one of a GPS location, a triangulated location, and a power level of a signal received from the mobile device. ### Claim 6 (depends on 1) The method of claim 1, further comprising determining whether the mobile device location is in an indoor environmental area or an outdoor environmental area. ### Claim 7 (depends on 1) The method of claim 1, further comprising: retrieving an environmental factor baseline from a database; comparing the at least one environmental factor to the environmental factor baseline to determine a certainty level; and determining a location of the mobile device when the comparing yields a certainly level above a predefined certainty level threshold. ### Claim 8 An apparatus comprising: a memory configured to store location information; and a processor configured to calculate deviations for location information and environmental factor information at a mobile device based on pre-stored location information and pre-stored environmental information; calculate a confidence factor based on the calculated deviations; and determine the mobile device location based on the confidence factor; wherein the environmental factor information comprises at least one of luminosity, distance from walls, ceiling height of an indoor structure, indoor acoustic signatures dependent upon the distance from walls and ceiling height of the indoor structure, altitude, precipitation levels, allergen levels, and outdoor acoustic signatures dependent upon the altitude and precipitation levels; and wherein the pre-stored location information and pre-stored environmental information comprises data determined to be constant after readings gathered and recorded from successive events remain constant over a predefined time interval. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the processor is further configured to weight the location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the processor is further configured to weight the environmental location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 11 (depends on 8) The apparatus of claim 8, wherein at least one of the indoor acoustic signatures and the outdoor acoustic signatures comprises an acoustic signature of at least one mechanical device or electrical device. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the location information comprises at least one of a GPS location, a triangulated location, and a power level of a signal received from the mobile device. ### Claim 13 (depends on 8) The apparatus of claim 8, wherein the processor is further configured to determine whether the mobile device location is in an indoor environmental area or an outdoor environmental area. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the processor is further configured to retrieve an environmental factor baseline from a database, compare the at least one environmental factor to the environmental factor baseline to determine a certainty level, and determine a location of the mobile device when the comparing yields a certainly level above a predefined certainty level threshold. ### Claim 15 A non-transitory computer readable storage medium configured to store instructions that when executed causes a processor to: calculate deviations for location information and environmental factor information at a mobile device based on pre-stored location information and pre-stored environmental information; calculate a confidence factor based on the calculated deviations; and determine the mobile device location based on the confidence factor; wherein the environmental factor information comprises at least one of luminosity, distance from walls, ceiling height of an indoor structure, indoor acoustic signatures dependent upon the distance from walls and ceiling height of the indoor structure, altitude, precipitation levels, allergen levels, and outdoor acoustic signatures dependent upon the altitude and precipitation levels; and wherein the pre-stored location information and pre-stored environmental information comprises data determined to be constant after readings gathered and recorded from successive events remain constant over a predefined time interval. ### Claim 16 (depends on 15) The non-transitory computer readable storage medium of claim 15, wherein the processor is further configured to weight the location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 17 (depends on 16) The non-transitory computer readable storage medium of claim 16, wherein the processor is further configured to weight the environmental location information with a modified weightage factor value between 0.1 and 1.0. ### Claim 18 (depends on 15) The non-transitory computer readable storage medium of claim 15, wherein at least one of the indoor acoustic signatures and the outdoor acoustic signatures comprises an acoustic signature of at least one mechanical device or electrical device. ### Claim 19 (depends on 15) The non-transitory computer readable storage medium of claim 15, wherein the location information comprises at least one of a GPS location, a triangulated location, and a power level of a signal received from the mobile device. ### Claim 20 (depends on 15) The non-transitory computer readable storage medium of claim 15, wherein the processor is further configured to: determine whether the mobile device location is in an indoor environmental area or an outdoor environmental area; retrieve an environmental factor baseline from a database; compare the at least one environmental factor to the environmental factor baseline to determine a certainty level; and determine a location of the mobile device when the comparing yields a certainly level above a predefined certainty level threshold.