User Equipment Transmit Duty Cycle Control

• US 20160066276A1
• Filed: 08/25/2015
• Published: 03/03/2016
• Est. Priority Date: 08/28/2014
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Su, Li, Schell, Stephan V., Shi, Jianxiong, Almalfouh, Sami M.
• Granted Patent: US 9,854,527 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/0277 according to available power supply, e.g. switching off when a low battery condition is detected
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In some embodiments, a user equipment device (UE) implements improved communication methods which include radio resource time multiplexing, dynamic sub-frame allocation, and UE transmit duty cycle control. In some embodiments, the UE may communicate with base stations using radio frames that include multiple sub-frames, transmit information regarding allocation of a portion of the sub-frames of a respective radio frame for each of a plurality of the radio frames, and transmit and receive data using allocated sub-frames and not using unallocated sub-frames. In some embodiments, the UE may operate according to a sub-frame allocation based on its current power state. The UE may transmit information to the base station and receive the sub-frame allocation based on at least the information. In some embodiments, the UE may switch transmit duty cycles based on an occurrence of a condition at the UE. The UE may inform the network of the switch.

Claims

1. A user equipment device (UE), comprising:

at least one antenna;

at least one radio, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT);

one or more processing elements coupled to the at least one radio, wherein the one or more processing elements and the at least one radio are configured to perform voice and/or data communications;

the one or more processing elements and the at least one radio are configured to;

operate according to a first transmit duty cycle, wherein the first transmit duty cycle specifies a first number of transmissions per time period;

monitor one or more metrics associated with transmission performance of the UE;

determine that at least one metric of the one or more metrics indicates that the UE needs to reduce transmissions;

switch a second transmit duty cycle, wherein the second transmit duty cycle specifies a second number of transmissions per time period, wherein the second number is less than the first number; and

operate according to the second transmit duty cycle.

2. The UE of claim 1,

wherein the one or more processing elements and the at least one radio are further configured to:

transmit an indication to a base station that the UE is operating according to the second transmit duty cycle.

3. The UE of claim 1,

wherein the one or more processing elements and the at least one radio are further configured to:

determine that at least one of metric of the one or more metrics indicates that the UE can increase transmissions;

determine a third transmit duty cycle, wherein the third transmit duty cycle specifies a third number of transmissions per time period, wherein the third number is greater than the second number; and

operate according to the third transmit duty cycle.

4. The UE of claim 3,

wherein the third number is equivalent to the first number.

5. The UE of claim 1,

wherein one or more metrics include at least one of:

transmission blanking rate;

audio frame error rate;

chemical charge level of a battery of the UE;

chemical charge dissipation rate of the battery of the UE; and

thermal load on the UE.

6. The UE of claim 1,

wherein the one or more processing elements and the at least one radio are further configured to:

compare the at least one metric to a threshold associated with the at least one metric;

wherein said determining that at least one metric of the one or more metrics indicates that the UE needs to reduce transmissions is based on said comparing.

7. The UE of claim 1,

wherein the at least one metric comprises two or more metrics, wherein the one or more processing elements and the at least one radio are further configured to:

compare each of the two or more metrics to corresponding thresholds associated with each of the two or more metrics;

wherein said that at least one metric of the one or more metrics indicates that the UE needs to reduce transmissions is based on said comparing.

8. The UE of claim 1,

wherein the one or more processing elements and the at least one radio are further configured to:

notify an application layer processing element of the UE that the UE has determined a second duty cycle, wherein the application layer processing element is configured to limit hardware usage responsive to the notification.

9. The UE of claim 1,

wherein the UE is a wearable device.

10. A method for reducing a transmit duty cycle of a user equipment device (UE), comprising:

the UE performing,

operating in a first state associated with a first transmit duty cycle, wherein the first transmit duty cycle specifies a first number of transmissions per time period;

monitoring a plurality of metrics associated with transmission performance of the UE;

determining that at least one metric of the plurality of metrics indicates that the UE needs to reduce transmissions per time period;

switching, based on said determining, to a second state associated with a second transmit duty cycle, wherein the second transmit duty cycle specifies a second number of transmissions per time period, wherein the second number is less than the first number.

11. The method of claim 10,

further comprising the UE performing,

transmitting an indication to a base station that the UE is switching to the second transmit duty cycle.

12. The method of claim 10,

further comprising the UE performing,

operating in the second state;

determining that at least one of metric of the one or more metrics indicates that the UE can increase transmissions; and

switching, based on said determining that at least one of metric of the one or more metrics indicates that the UE can increase transmissions, to the first state.

13. The method of claim 10,

wherein plurality of metrics include at least one of:

transmission blanking rate;

audio frame error rate;

chemical charge level of a battery of the UE;

chemical charge dissipation rate of the battery of the UE; and

thermal load on the UE.

14. The method of claim 10,

further comprising the UE performing,

comparing the at least one metric to a threshold associated with the at least one metric;

wherein said determining is based on said comparing.

15. The method of claim 10,

wherein the at least one metric comprises two or more metrics, the method further comprising the UE performing,

comparing each of the two or more metrics to corresponding thresholds associated with each of the two or more metrics;

wherein said determining is based on said comparing.

16. The method of claim 10,

further comprising the UE performing:

notifying, in response to said switching, an application layer processing element of said switching, wherein the application layer processing element is configured to limit hardware usage responsive to said notifying.

17. A non-transitory computer readable memory medium storing program instructions executable by a processing element to:

detect that a user equipment device (UE) is transmitting according to a first transmit duty cycle, wherein the first transmit duty cycle specifies a first number of transmissions per time period;

determine an occurrence of at least one condition, wherein the occurrence indicates that the UE needs to reduce transmissions per time period; and

switch the UE to a second transmit duty cycle in response to said determining, wherein the second transmit duty cycle specifies a second number of transmissions per time period, wherein the second number is less than the first number.

18. The non-transitory computer readable memory medium of claim 17,

wherein the program instructions are further executable by the processing element to:

transmit an indication to a base station that the UE is switching to the second transmit duty cycle.

19. The non-transitory computer readable memory medium of claim 17,

wherein the program instructions are further executable by the processing element to:

detect that the UE is transmitting according to the second state;

determine an occurrence of at least one additional condition, wherein the occurrence indicates that the UE can increase transmissions per time period; and

switch, based on said determining the occurrence of the at least one additional condition, to the first transmit duty cycle.

20. The non-transitory computer readable memory medium of claim 17,

wherein the program instructions are further executable by the processing element to:

notify, in response to said switching, an application layer processing element of said switching, wherein the application layer processing element is configured to limit hardware usage responsive to said notifying.