Qualcomm Incorporated

Debashis Dutt

Sunit Bhatia

Orhan Kemal Akyildiz

Laurent Wojcieszak

Richard Turner

Sriman Miryala

Rong He

Richard Cardoe

Ganesh Babu Kumaravel

Derrick Rea

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a peripheral device may synchronize a local clock to an access point timing synchronization function clock (TSF_AP) that is maintained by an access point (AP) connected to the peripheral device. The peripheral device may maintain, based at least in part on the local clock, an estimated time-to-play timing synchronization function clock (TSF_est) that is associated with outputting user data. The peripheral device may receive, from the AP, timing synchronization information that is based at least in part on a comparison between a wireless communication device (WCD) time-to-play timing synchronization function software clock (TSF_soft) and the TSF_est. The peripheral device may output the user data based at least in part on the TSF_est and the timing synchronization information. Numerous other aspects are described.

Time synchronizing a wireless communication device and a peripheral device based on one or more access points

Optimizing network driver performance and power consumption in multi-core processor-based systems is disclosed. In this regard, a multi-core processor-based system provides multiple processor cores comprising one or more power-optimized processor cores and one or more performance-optimized processor cores, and a network device configured to assign network streams to a plurality of interrupts. A network driver calculates a current throughput level of the network device, and determines whether a throughput mode of the network driver should be modified to a high-throughput mode. If so, the network driver assigns each interrupt to one of the performance-optimized processor cores, and disables system reassignment of interrupts among the processor cores. Some aspects may also determine whether the throughput mode should be modified to a low-throughput mode, in which case the network driver assigns each interrupt to a same power-optimized processor core and enables system reassignment of interrupts among the processor cores.

Optimizing network driver performance and power consumption in multi-core processor-based systems

Methods and devices for scheduling processing tasks in a computing device configured with a group of low-power processor cores and at least one high-performance processor core may include identifying multiple application streams related to communication with a wireless local area network (WLAN), computing a total WLAN throughput requirement for the application streams, and determining whether the total WLAN throughput requirement is less than a first threshold value. The first threshold value may be based on power characteristics of the low-power processor cores. In response to determining that the total WLAN throughput requirement is less than the first threshold value, the computing device may schedule all processing tasks for the multiple application streams on one of the low-power processor cores.

System and methods for scheduling software tasks based on central processing unit power characteristics

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Debashis Dutt