摘要:
A combined GNSS and FM receiver receives FM signals comprising satellite navigation data from an AGNSS server. Associated navigation information such as a position fix is determined based on the received satellite navigation data. The received satellite navigation data are GNSS assistance data or LTO data. The AGNSS server generates the satellite navigation data by acquiring GNSS data from a satellite reference network. The acquired GNSS data comprise, for example, GPS data, GLONASS data and/or GALILEO data. The generated satellite navigation data are broadcasted as FM signals through RDS and/or RBDS to the combined GNSS and FM receiver. The combined GNSS and FM receiver receives updated satellite navigation data in subsequent FM signals, periodically or aperiodically, and updates associated navigation information, accordingly. The combined GNSS and FM receiver decodes the received FM radio signals for the updated satellite navigation data generated at the AGNSS server before being transmitted.
摘要:
A combined GNSS and FM receiver receives FM signals comprising satellite navigation data from an AGNSS server. Associated navigation information such as a position fix is determined based on the received satellite navigation data. The received satellite navigation data are GNSS assistance data or LTO data. The AGNSS server generates the satellite navigation data by acquiring GNSS data from a satellite reference network. The acquired GNSS data comprise, for example, GPS data, GLONASS data and/or GALILEO data. The generated satellite navigation data are broadcasted as FM signals through RDS and/or RBDS to the combined GNSS and FM receiver. The combined GNSS and FM receiver receives updated satellite navigation data in subsequent FM signals, periodically or aperiodically, and updates associated navigation information, accordingly. The combined GNSS and FM receiver decodes the received FM radio signals for the updated satellite navigation data generated at the AGNSS server before being transmitted.
摘要:
A GNSS enabled mobile device transmits to a location server a combination of GNSS-based location data and non-GNSS based location data used to determining reference positions at the location server. The GNSS mobile device receives the determined reference positions from the location server to calculate an associated GNSS position fix. The transmitted GNSS-based location data comprises GNSS position fixes associated with the GNSS enabled mobile device. The transmitted non-GNSS-based location data comprises a serving Cell-ID, neighbor Cell-IDs, neighbor cell fingerprinting, timing advance parameters, and/or a mobile country code. Reference positions associated with the serving Cell-ID are determined and/or refined based on location information acquired from each of associated mobile devices. To respond to a reference position request from the GNSS enabled mobile device without an associated serving Cell-ID, the location server determines corresponding reference positions by combing subscriber population density with an associated MCC.
摘要:
A GNSS enabled mobile device transmits to a location server a combination of GNSS-based location data and non-GNSS based location data used to determining reference positions at the location server. The GNSS mobile device receives the determined reference positions from the location server to calculate an associated GNSS position fix. The transmitted GNSS-based location data comprises GNSS position fixes associated with the GNSS enabled mobile device. The transmitted non-GNSS-based location data comprises a serving Cell-ID, neighbor Cell-IDs, neighbor cell fingerprinting, timing advance parameters, and/or a mobile country code. Reference positions associated with the serving Cell-ID are determined and/or refined based on location information acquired from each of associated mobile devices. To respond to a reference position request from the GNSS enabled mobile device without an associated serving Cell-ID, the location server determines corresponding reference positions by combing subscriber population density with an associated MCC.
摘要:
A GNSS enabled mobile device transmits to a location server a combination of GNSS-based location data and non-GNSS based location data used to determining reference positions at the location server. The GNSS mobile device receives the determined reference positions from the location server to calculate an associated GNSS position fix. The transmitted GNSS-based location data comprises GNSS position fixes associated with the GNSS enabled mobile device. The transmitted non-GNSS-based location data comprises a serving Cell-ID, neighbor Cell-IDs, neighbor cell fingerprinting, timing advance parameters, and/or a mobile country code. Reference positions associated with the serving Cell-ID are determined and/or refined based on location information acquired from each of associated mobile devices. To respond to a reference position request from the GNSS enabled mobile device without an associated serving Cell-ID, the location server determines corresponding reference positions by combing subscriber population density with an associated MCC.
摘要:
A wireless communication device capable of determining its location in an indoor environment is disclosed. In an indoor environment, a wireless communication device may have insufficient access to GNSS satellites or cellular towers to make an accurate determination as to its location. Therefore, the wireless communication device generates a fingerprint map of the environment by estimating its position and scanning multiple positions within the environment for accessible access points and characteristics. The device stores this information in memory, which it can later refer to for determining its current position.
摘要:
Aspects of a method and system for global position reference map (GPRM) for AGPS are provided. A GPS enabled device may transmit reference location data to a location server and responded with a global position reference map (GPRM) from the location server. The reference location data and/or the received GPRM may comprise reference positions, which may be any identifiable location information, for the GPS enabled device. The reference location data may be formatted via various location identifiers such as a RNC ID, MCC and/or a MNC indicating desired coverage areas for the received GPRM. The reference location data may be a portion of a reference position database inside the GPS enabled device. The reference position database may be updated via the received GPRM. A fast position fix for the GPS enabled device may be achieved by combining AGPS data or LTO AGPS data, and the reference position database.
摘要:
Method and apparatus for managing a network element in a satellite navigation data distribution system is described. In one example, a network element includes a processor for processing satellite navigation data. For example, a network element may be a reference station, a hub, or a server in the satellite navigation data distribution system. The network element includes a memory for maintaining status variables associated with the processing of the satellite navigation data. The status variables may relate to the integrity of the satellite navigation data. The network element further includes a management agent for monitoring states of the status variables and communicating with a network management system to exchange information related to the states of the status variables. In one example, the management agent is configured to communicate using a simple network management protocol (SNMP).
摘要:
A global navigation satellite system (GNSS) enabled mobile device comprising an Internet protocol (IP) interface may be operable to determine a reference position based on a registered public IP address associated with the GNSS enabled mobile device and range uncertainty for the registered public IP address. The GNSS enabled mobile device may identify the registered public IP address associated with the GNSS enabled mobile device and a packet travel time to reach the registered public IP address utilizing a network trace test. The GNSS enabled mobile device may be operable to determine the range uncertainty for the identified registered public IP address and validate the registered public IP address for a reference position based on the determined range uncertainty. The GNSS enabled mobile device may be operable to acquire a latitude/longitude associated with the validated registered public IP address for the reference position.
摘要:
A global navigation satellite system (GNSS) enabled mobile device comprising an Internet protocol (IP) interface may be operable to determine a reference position based on a registered public IP address associated with the GNSS enabled mobile device and range uncertainty for the registered public IP address. The GNSS enabled mobile device may identify the registered public IP address associated with the GNSS enabled mobile device and a packet travel time to reach the registered public IP address utilizing a network trace test. The GNSS enabled mobile device may be operable to determine the range uncertainty for the identified registered public IP address and validate the registered public IP address for a reference position based on the determined range uncertainty. The GNSS enabled mobile device may be operable to acquire a latitude/longitude associated with the validated registered public IP address for the reference position.