Brownout prevention for mobile devices
View Patent ↗In one embodiment, an apparatus of a mobile device includes memory comprising instructions and processing circuitry coupled to the memory to implement the instructions to: process messages from a network device indicating a scheduling of network traffic for the mobile device, determine an estimated peak power consumption associated with the scheduling of network traffic based on the messages, and execute a time-based throttling scheme for a modem of the mobile device based on the estimated peak power consumption.
1. An apparatus of a mobile device, the apparatus comprising:
memory comprising instructions; and
processing circuitry coupled to the memory to implement the instructions to:
process messages from a network device indicating a scheduling of network traffic for the mobile device;
determine an estimated peak power consumption associated with the scheduling of network traffic based on the messages; and
execute a time-based throttling scheme for a modem of the mobile device based on the estimated peak power consumption.
2. The apparatus of claim 1 , wherein processing the messages from the network device comprises comparing the messages with previously-received messages from the network device indicating a previous scheduling of network traffic for the mobile device.
3. The apparatus of claim 1 , wherein the throttling scheme is a tiered scheme, wherein each tier of the throttling scheme indicates a different throttling restriction and is activated based on an elapsed time since executing the throttling scheme.
4. The apparatus of claim 3 , wherein each tier of the throttling scheme implements a less restrictive throttling than a prior tier of the throttling scheme.
5. The apparatus of claim 1 , wherein executing the throttling scheme includes at least one of reducing a data rate for the modem, reducing a number of component carriers available to the modem for communication, reducing a rank indication for the modem, and reducing a window size for a Transmission Control Protocol (TCP).
6. The apparatus of claim 1 , wherein the messages indicate at least one of an uplink scheduling grant for the mobile device, a downlink scheduling grant for the mobile device, a number of component carriers assigned to the mobile device, and a transmit power level assignment for the mobile device.
7. The apparatus of claim 1 , wherein the messages include messages formatted according to a Radio Resource Control (RRC) protocol.
8. The apparatus of claim 1 , wherein executing the throttling scheme is further based on at least one of a battery capacity of the mobile device, battery aging information of the mobile device, and a battery temperature of the mobile device.
9. A non-transitory computer-readable medium comprising instructions that are, when executed by processing circuitry, to:
process messages from a network device indicating a scheduling of network traffic for a mobile device;
determine an estimated peak power consumption associated with the scheduling of network traffic based on the messages; and
execute a time-based throttling scheme for a modem of the mobile device based on the estimated peak power consumption.
10. The non-transitory computer-readable medium of claim 9 , wherein processing the messages from the network device comprises comparing the messages with previously-received messages from the network device indicating a previous scheduling of network traffic for the mobile device.
11. The non-transitory computer-readable medium of claim 9 , wherein the throttling scheme is a tiered scheme, wherein each tier of the throttling scheme indicates a different throttling restriction and is activated based on an elapsed time since executing the throttling scheme.
12. The non-transitory computer-readable medium of claim 11 , wherein each tier of the throttling scheme implements a less restrictive throttling than a prior tier of the throttling scheme.
13. The non-transitory computer-readable medium of claim 9 , wherein executing the throttling scheme includes at least one of reducing a data rate for the modem, reducing a number of component carriers available to the modem for communication, reducing a rank indication for the modem, and reducing a window size for a Transmission Control Protocol (TCP).
14. The non-transitory computer-readable medium of claim 9 , wherein the messages indicate at least one of an uplink scheduling grant for the mobile device, a downlink scheduling grant for the mobile device, a number of component carriers assigned to the mobile device, and a transmit power level assignment for the mobile device.
15. The non-transitory computer-readable medium of claim 9 , wherein the messages include messages formatted according to a Radio Resource Control (RRC) protocol.
16. The non-transitory computer-readable medium of claim 9 , wherein executing the throttling scheme is further based on at least one of a battery capacity of the mobile device, battery aging information of the mobile device, and a battery temperature of the mobile device.
17. An apparatus of a mobile device, the apparatus comprising:
memory comprising instructions; and
processing circuitry coupled to the memory to implement the instructions to:
determine an estimated chip temperature based on information in a lookup table, the information based on characteristic curves for the mobile device indicating expected chip temperatures associated with particular modem states;
detect a drop in a supply voltage for the modem; and
execute a throttling scheme for a modem of the mobile device based on the estimated chip temperature and the detected drop in the supply voltage.
18. The apparatus of claim 17 , wherein the modem state includes at least one of an amount of power consumption by the modem, a data rate of the modem, and a number of component carriers used by the modem.
19. The apparatus of claim 17 , wherein executing the throttling scheme is based on at least one of a level of the detected drop in the supply voltage and a number of voltage drop detection over a time duration.
20. A method, comprising:
determining an estimated chip temperature based on information in a lookup table, the information based on characteristic curves for the mobile device indicating expected chip temperatures associated with particular modem states;
detecting a drop in a supply voltage for the modem; and
executing a throttling scheme for a modem of the mobile device based on the estimated chip temperature and the detected drop in the supply voltage.
21. The method of claim 20 , wherein the modem state includes at least one of an amount of power consumption by the modem, a data rate of the modem, and a number of component carriers used by the modem.
22. The method of claim 20 , wherein executing the throttling scheme is based on at least one of a level of the detected drop in the supply voltage and a number of voltage drop detection over a time duration.