Abstract:
Techniques are discussed herein for efficiently providing wireless emergency alerts (WEA) to a mobile device. The techniques include broadcasting a warning message from a base station in a wireless network within a cell for the base station and including an interior cell or exterior cell indication and a geographic area description for an external cell. A receiving mobile device may then display the warning message to a user either unconditionally when an interior cell is indicated or after verifying the mobile device is located within the geographic area for an exterior cell. The wireless network may determine interior versus exterior cell status by determining interior cells to be wholly within the geographic area and exterior cells to be partly within the geographic area.
Abstract:
Techniques for supporting positioning are described. In an example implementation, a method for use in determining a position of a mobile station is provided, wherein a network-based computing device receives a message from a mobile station, the message indicating an identity of a transmitter device from which the mobile device has received at least one signal; and identifies at least one civil location estimate based at least in part on the message; the at least one civil location estimate representing an estimated location of the mobile device.
Abstract:
Methods, systems, computer-readable media, and apparatuses for using a small cell as a reliable crowd-sourcing agent are presented. In some embodiments, a small cell installed at a known location may observe one or more wireless signals at the known location, wherein the small cell comprises a built-in network listen receiver for observing cellular downlink signals. Subsequently, the small cell may provide, to at least one crowdsourcing server, information that identifies the location and describes one or more detected properties of the one or more observed wireless signals. In at least one arrangement, the information provided to at least one crowdsourcing server is a Positioning Reference Signal (PRS) configuration based on an observed LTE downlink signals. In at least one arrangement, the information provided to at least one crowdsourcing server is configured to be used by the at least one crowdsourcing server in providing position assistance information.
Abstract:
Systems, apparatus and methods for a mobile device and a base station almanac server to throttle crowdsourcing information are presented. The crowdsourcing information is used to improve a location of a base station in a base station almanac. A portion of the base station almanac is provided to a mobile device. For example, the mobile device may identify its current cell and request the base station almanac. The mobile device records crowdsourcing information to identify, for each particular base station of at least one base station, a cellular identifier for the particular base station, optional ranging information between the particular base station and the mobile device, and an independent position of the mobile device. The independent position of the mobile device may be formed from global navigation satellite system (GNSS) or station signals independent of the at least one base station.
Abstract:
Techniques for publishing location information associated with a non-geotagged transceiver are disclosed. A method for publishing a position of a non-geotagged transceiver in a wireless communication system includes determining a first position of the non-geotagged transceiver based on a periodic neighbor list, determining a second position of the non-geotagged transceiver based on an accumulated neighbor list, determining if the first position and the second position agree, publishing a third position if the first position and the second position agree, such that the third position is determined based on the union of the periodic neighbor list and the accumulated neighbor list, and resetting the accumulated neighbor list if the first and second position do not agree.
Abstract:
Techniques disclosed herein provide for enhanced LTE Positioning Protocol (LPP) Reliable Transport where the receiver of an LPP message sends a non-piggybacked acknowledgement. An example method for executing on a mobile device a protocol session with a location server includes sending a first protocol session message associated with a first protocol session to the location server, entering a wait-for-acknowledgement state in which uplink transmissions from the mobile device to the location server are suspended while waiting for an acknowledgement from the location server in response to the first protocol session message, receiving a second protocol session message associated with a second protocol session which is not an acknowledgement to the first protocol session message but includes information requested in the first protocol session message; exiting the wait-for-acknowledgement state responsive to receiving the second protocol session message; and performing an action using the information received in the second protocol session message.
Abstract:
Systems, apparatus and methods for a mobile device and a base station almanac server to throttle crowdsourcing information are presented. The crowdsourcing information may be used to improve a location of a base station in a base station almanac. A base station almanac is received from a base station almanac server. Crowdsourcing information for at least one base station is collected, including identifying an identifier for each base station and determining a position estimate of the mobile device for each base station. A crowdsourcing throttle is determined based on the base station almanac and the crowdsourcing information is sent to the base station almanac server based on the crowdsourcing throttle.
Abstract:
Methods and apparatuses are presented for use in a terminal to access a discovered location server. The methods may include in response to a determination that a first network does not support authenticated access from the terminal to a home location server, obtaining authenticated access to the home location server using a second network that does support authenticated access to the home location server by the terminal. In response to obtaining authorization for the discovered location server from the home location server, the terminal may access the discovered location server using the first network.
Abstract:
A location server, such as a Serving Mobile Location Center (SMLC) or E-SMLC and mobile terminal selectively implement the reliable transport mechanism used in, e.g., LPP or LPPe protocols, thereby decreasing unnecessary delays. The reliable transport mechanism may be selectively implemented by not requiring an acknowledgement for specific messages, such as an unsolicited assistance data message. When assistance data is solicited, however, the responsive assistance data message includes an acknowledgement request as per the reliable transport mechanism.
Abstract:
Methods and apparatuses are presented for obtaining authorized access from a terminal to a discovered location server. The methods may include switching from a first network that does not support authenticated access from the terminal to a home location server to a second network that does support authenticated access from the terminal to the home location server. Authenticated access to the home location server may be obtained using the second network. Authorization for the discovered location server may then be obtained from the home location server. The terminal may then switch from the second network back to the first network. The terminal may then access the discovered location server using the first network based on the obtained authorization from the home location server.