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US 9,068,841 B2Granted
Enhanced database information for urban navigation
AssigneeQUALCOMM Incorporated
InventorLionel Jacques Garin
Life of this patent
Estimating the term…
Abstract
Techniques are provided which may be implemented in an electronic device to establish certain enhanced database information for point locations which may correspond to an estimated location of a mobile device. For example, some enhanced database information may be based, at least in part, on a satellite signal visibility mask. All or part of such enhanced database information may be provided to one or more mobile devices, which may use the enhanced database, at least in part, for location estimation.
Claims60
An apparatus for use in at least one electronic device, the apparatus comprising:
- means for accessing a satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- means for establishing an enhanced database for at least a plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and
- means for providing at least a portion of said enhanced database to at least one mobile device, and wherein said signal visibility mask for each of said plurality of point locations comprises a mask function to establish an expected azimuth/elevation mask for at least one of a potential line-of-sight (LOS) signal reception, and/or a potential non-line-of-sight (NLOS) signal reception.
1 more element
An apparatus comprising:
- a communication interface;
- and
- a processing unit to:
- access a satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- establish an enhanced database for at least a plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and initiate transmission of at least a portion of said enhanced database to at least one mobile device via said communication interface, and wherein said signal visibility mask for each of said plurality of point locations comprises a mask function to establish an expected azimuth/elevation mask for at least one of a potential line-of-sight (LOS) signal reception, and/or a potential non-line-of-sight (NLOS) signal reception.
3 more elements
An article comprising:
- a non-transitory computer readable medium having computer implementable instructions stored therein which are executable by a processing unit of an electronic device to:
- access a satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- establish an enhanced database for at least a plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and
- initiate transmission of at least a portion of said enhanced database to at least one mobile device;
- wherein said signal visibility mask for each of said plurality of point locations comprises a mask function to establish an expected azimuth/elevation mask for at least one of a potential line-of-sight (LOS) signal reception, and/or a potential non-line-of-sight (NLOS) signal reception.
3 more elements
An apparatus for use in at least one electronic device, the apparatus comprising:
- means for establishing a signal visibility mask for each of a plurality of point locations geographically distributed within at least one open area portion of a region based, at least in part, on at least a portion of three-dimensional geographical database;
- means for accessing said satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- means for establishing an enhanced database for at least said plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and
- means for providing at least a portion of said enhanced database to at least one mobile device.
2 more elements
An apparatus comprising:
- a communication interface;
- and
- a processing unit to:
- establish a satellite signal visibility mask for each of a plurality of point locations geographically distributed within at least one open area portion of a region based, at least in part, on at least a portion of three-dimensional geographical database;
- access said satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- establish an enhanced database for at least said plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and initiate transmission of at least a portion of said enhanced database to at least one mobile device via said communication interface.
4 more elements
An article comprising:
- a non-transitory computer readable medium having computer implementable instructions stored therein which are executable by a processing unit of an electronic device to:
- establish a satellite signal visibility mask for each of a plurality of point locations geographically distributed within at least one open area portion of a region based, at least in part, on at least a portion of three-dimensional geographical database;
- access said satellite signal visibility mask for at least one satellite enabled to transmit an RF signal;
- establish an enhanced database for at least said plurality of point locations based, at least in part, on said satellite signal visibility mask;
- and
- initiate transmission of at least a portion of said enhanced database to at least one mobile device.
3 more elements
Dependencies are inferred from the claim text.