Intel Corporation

Apple Inc.

Raghvendra Gupta

Rajshekhar Oruganti

A user equipment (UE) and method of providing local fine timing assistance are generally described. Prior to storing a Global Navigation Satellite System (GNSS)-cellular time relationship in the UE and, when the network is unable to provide fine timing assistance, a GNSS receiver transmits a request to a modem. The modem, in response, periodically or as scheduled transmits a pulse and pulse timing information (PTI) including a pulse transmission time (PTT) based on cellular network time. The receiver determines a GNSS-cellular time relationship and obtains a GNSS satellite positioning signal and GNSS fix using the PTI. For pulses after the initial pulse, the PTI includes a time difference between the PTT and a PTT of the preceding pulse. The receiver determines a time difference between the PTT and GNSS fix. The modem is configured to terminate pulse transmission in response to receiving a termination request from the receiver.

Device, system and global navigation satellite system method using local fine time information

The present disclosure is directed to power conservation via global navigation satellite system (GNSS)-cellular activity synchronization. In general, power may be conserved in a device by setting a GNSS module in a device to operate during a time period when communication resources (e.g., a communication module) in the device are already scheduled to operate, which may conserve power in the device. Synchronization may occur via a notification (e.g., a pulse, a message, etc.) that is transmitted from the communication module to the GNSS module. In this manner, the burden of managing GNSS module operation may be shifted from control resources in the device (e.g., a system module) to the communication module, allowing the system module to remain in a power conservation state (e.g., sleep state) for longer durations and for GNSS signal measurement to occur when the system module is already active.

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Bengaluru, India

Raghvendra Gupta