Abstract:
Methods, systems, and devices are described for peer-to-peer or device-to-device location services. Mobile devices with a known location (referred to as landmarks) may broadcast their location information and/or a reference signal for other mobile devices (referred to as targets). Landmarks may determine their location through GPS or other location determining means. Targets may have limited or no connection to location determining services, and they may use broadcast information from landmarks, without a request, to determine the targets' location. The targets may determine absolute and/or relative locations. Once a target device determines its location it may assume a role of a landmark to provide broadcast location information to other devices.
Abstract:
Power efficient methods and apparatus for detecting wireless terminals in a relatively small geographic area are described. Wireless terminals transmit discovery signals and/or other signals which may be detected by an access point. Various described methods and apparatus are well suited for embodiments where multiple access points, which obtain power from a common power source and/or via a common power bus, with limited power delivery capability. To address power constraints, access points are controlled by a gateway device coupled to the access points so that one or more access points perform monitoring at different times with one or more access points having their receivers powered off while another access point monitors for wireless terminal signals. Power consumption from the common power source is managed by controlling power consumption associated with monitoring operations performed by one or more access points coupled to a common power source.
Abstract:
Methods, systems, and devices are described for peer-to-peer or device-to-device location services. Mobile devices with a known location (referred to as landmarks) may broadcast their location information and/or a reference signal for other mobile devices (referred to as targets). Landmarks may determine their location through GPS or other location determining means. Targets may have limited or no connection to location determining services, and they may use broadcast information from landmarks, without a request, to determine the targets' location. The targets may determine absolute and/or relative locations. Once a target device determines its location it may assume a role of a landmark to provide broadcast location information to other devices.
Abstract:
Power efficient methods and apparatus for detecting wireless terminals in a relatively small geographic area are described. Wireless terminals transmit discovery signals and/or other signals which may be detected by an access point. Various described methods and apparatus are well suited for embodiments where multiple access points, which obtain power from a common power source and/or via a common power bus, with limited power delivery capability. To address power constraints, access points are controlled by a gateway device coupled to the access points so that one or more access points perform monitoring at different times with one or more access points having their receivers powered off while another access point monitors for wireless terminal signals. Power consumption from the common power source is managed by controlling power consumption associated with monitoring operations performed by one or more access points coupled to a common power source.