System and method for positioning
AssigneeTexas Instruments Incorporated
InventorsDeric W. Waters, Ariton E. Xhafa
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include a method for creating probe requests. The method is used when positioning is required. A short probe request is constructed with SSID set to GPS SSID_NAME. Another method continues after a short probe response is received. It is determined if a SSID of the probe response matches the SSID of the short probe request. If it does send an ACK.
Claims18
A method for creating probe requests in a mobile device, the method comprising:
- determining, by the mobile device, whether positioning of the mobile device is required;
- and
- in response to determining that positioning of the mobile device is required, transmitting, by the mobile device, a short probe request, the short probe request being shorter than a regular probe request used for handover from one access point (AP) to another, the short probe request comprising:
- a SSID_Name field including a global positioning system (GPS) prefix and a Service Set Identifier (SSID), and
- a short length supported transmission rates field, the GPS prefix indicating that the short probe request is being used for positioning purposes instead of handover purposes.
A method for creating a short probe response in an Access Point (AP), the method comprising:
- receiving, by the AP, a short probe request;
- sending, by the AP, a short probe response, in response to determining that a service set identifier (SSID) of the short probe request has a global positioning system (GPS) prefix;
- and
- sending, by the AP, a regular probe response, in response to determining that the SSID of the short probe request does not have the GPS prefix, the short probe response being shorter than the regular probe response.
A mobile device comprising:
- a transceiver;
- at least one antenna coupled to the transceiver, for transmitting a signal over a wireless channel;
- a processor coupled to the transceiver;
- a non-transitory computer-readable storage medium storing a program for execution by the processor, the program including instructions for:
- in response to determining that positioning of the mobile device is required, instructing the transceiver to transmit a short probe request, the short probe request being shorter than a regular probe request used for handover from one access point (AP) to another, the short probe request comprising:
- a SSID_Name field comprising a global positioning system (GPS) prefix and a Service Set Identifier (SSID), the GPS prefix indicating that the short probe request is being used for positioning purposes;
- and
- a short length supported transmission rates field.
An Access Point (AP) comprising:
- a transceiver;
- at least one antenna coupled to the transceiver, for transmitting a signal over a wireless channel;
- a processor coupled to the transceiver;
- a non-transitory computer-readable storage medium storing a program for execution by the processor, the program including instructions for:
- receiving a short probe request;
- sending a short probe response, in response to determining that a service set identifier (SSID) of the short probe request has a global positioning system (GPS) prefix;
- and
- sending a regular probe response, in response to determining that the SSID of the short probe request does not have the GPS prefix, the short probe response being shorter than the regular probe response.
A non-transitory computer-readable storage medium storing a program for execution by a processor of a mobile device, the program including instructions to:
- in response to determining that positioning of the mobile device is required, transmit a short probe request, the short probe request being shorter than a regular probe request used for handover from one access point (AP) to another, the short probe request comprising:
- a SSID_Name field comprising a global positioning system (GPS) prefix;
- and
- a short length supported transmission rates field, the GPS prefix indicating that the short probe request is being used for positioning purposes instead of handover purposes.
A non-transitory computer-readable storage medium storing a program for execution by a processor of a mobile device, the program including instructions for:
- receiving a short probe request;
- sending a short probe response, in response to determining that a service set identifier (SSID) of the short probe request has a global positioning system (GPS) prefix;
- and
- sending a regular probe response, in response to determining that the SSID of the short probe request does not have the GPS prefix, the short probe response being shorter than the regular probe response.
Dependencies are inferred from the claim text.