摘要:
Methods and systems are provided for determining a position of a subscriber station in a wireless communications system. The subscriber station receives an overhead message from the wireless communications system and obtains a parameter value. A data structure stored in memory of the subscriber station is then accessed and a seed position is set to a stored position from an entry of the data structure associated with a value matching the parameter value obtained from the received overhead message. The position of the subscriber station is then determined from a set of signals from a satellite position determination system based on the set seed position.
摘要:
A communication system that allows multiple data applications to work simultaneously within a distributed execution environment in which only one IP address is assigned to a mobile system (10) by an external wireless network (13). The mobile system comprises a wireless communication system with a first processing device (31) (such as a cell phone or a network card) and a second device with another processor (32) (such as a laptop computer or a personal digital assistant). The single IP address is assigned to the second processor, and all incoming external communications are stored in the second processor. In some embodiments the first processing device includes a filter (20); in other embodiments the second processing device includes a proxy for each processor (26). Additional processors can be connected to the mobile system by adding an additional filter or additional proxy.
摘要:
Techniques for supporting location services with roaming are described. A mobile station interacts with a home mobile positioning center (H-MPC) in a home network for location services even when roaming. The mobile station communicates with a visited network for a data session and receives a request for its location. The mobile station sends first information (e.g., SID and NID) indicative of its current network location to the H-MPC. The H-MPC determines a serving mobile positioning center (S-MPC) in the visited network based on the first information. The S-MPC determines a serving position determining entity (S-PDE) in the visited network based on the first information. Depending on the selected positioning method, the H-MPC may receive an S-PDE address or a position estimate of the mobile station from the S-MPC and may forward this information to mobile station. The mobile station may communicate with the S-PDE for positioning using the S-PDE address.
摘要:
Methods and systems are provided for determining a position of a subscriber station in a wireless communications system. The subscriber station receives an overhead message from the wireless communications system and obtains a parameter value. A data structure stored in memory of the subscriber station is then accessed and a seed position is set to a stored position from an entry of the data structure associated with a value matching the parameter value obtained from the received overhead message. The position of the subscriber station is then determined from a set of signals from a satellite position determination system based on the set seed position.
摘要:
A device, method and system are provide which permits the methodology used to make the position determination to change dynamically in connection with achieving a position fix of a desired accuracy
摘要:
Multiple applications sharing common resources are arbitrated such that failures resulting from unavailable resources can be avoided. Whenever an application (e.g., a data application) desires to perform an operation (e.g., PPP resynchronization) that requires the use of a shared resource (e.g., an RF receiver), a determination is made as to whether that resource is available. The operation may be delayed while the resource is unavailable. The application may be assigned the resource if it is available or becomes available and may then start the operation. The resource is locked while the operation is pending to avoid assignment to another application. The resource arbitration allows applications to complete their operations without encountering failures due to other applications taking over the resources.