POWER MANAGEMENT IN A PORTABLE COMMUNICATION DEVICE BASED ON RADIO CONFIGURATION VERSION

• US 20080268917A1
• Filed: 04/25/2007
• Published: 10/30/2008
• Est. Priority Date: 04/25/2007
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: CHANG, Henry, Dunn, Doug
• Granted Patent: US 9,295,000 B2
• Time in Patent Office: Days
• US Class Current: 455/574
• CPC Class Codes: H04W 4/14 Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 52/0261 managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 76/50 for emergency connections
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A portable communication device transmits, to a communication network, a radio configuration (RC) request indicator requesting assignment of a power saving radio configuration for reverse link transmissions. The power saving radio configuration is one a plurality of radio configurations including the power saving radio configuration and at least one other radio configuration defined by a communication standard different than the communication standard defining the power saving radio configuration. Average power consumption at the portable device when the portable communication device participates in the call using the power saving radio configuration is less than if the other radio configuration is used for the call.

Claims

1. A method for power management performed in a portable communication device capable of operating in accordance with any one of a plurality of radio configurations, the method comprising:

determining a remaining battery charge is below a threshold;

transmitting, in response to the determining step, a radio configuration request indicator to a base station to request assignment of a power saving radio configuration of the plurality of radio configurations, the power saving radio configuration resulting in less power consumption for reverse link transmissions than at least one other radio configuration of the plurality of radio configurations.

2. The method of claim 1, further comprising:

measuring the remaining charge of a battery within the portable communication device.

3. The method of claim 1, further comprising:

transmitting a battery level indicator indicating the remaining battery charge.

4. The method of claim 3, wherein batter level indicator is transmitted within a Status Message using a dedicated channel.

5. The method of claim 1, wherein the power saving radio configuration results in use of more communication resources than the at least one other radio configuration.

6. The method of claim 5, wherein the power saving radio configuration is selected from the group consisting of RC1 and RC2 and the least one other radio configuration is selected from the group consisting of RC3 and RC4.

7. The method of claim 1, further comprising:

forming a request message to include the radio configuration request indicator; and

transmitting the request message to the base station.

8. The method of claim 7, wherein forming the request message comprises forming a Service Request Message based on a Service Configuration record.

9. The method of claim 7, wherein forming the request message comprises forming a Short Message Service (SMS) message.

10. The method of claim 7, wherein forming the request message comprises forming a call establishment message, the call establishment message selected from the group comprising an origination message and a page response message, the radio configuration request indicator comprising a reverse radio configuration preference (REV_RC_PREF) field.

11. A portable communication device capable of operating in accordance with any one of a plurality of radio configurations, the portable communication device comprising:

a transmitter configured to transmit a radio configuration request indicator to a base station to request assignment of a power saving radio configuration for reverse link transmissions, the power saving radio configuration resulting in less power consumption for reverse link transmissions than at least one other radio configuration of the plurality of radio configurations.

12. The portable communication device of claim 11, further comprising:

a controller configured to determine a remaining battery charge is below a threshold and to generate the power saving radio configuration in response to determining the remaining battery charge is below the threshold.

13. The portable communication device of claim 12, wherein the transmitter is further configured to transmit a battery level indicator indicating the remaining battery charge.

14. The portable communication device of claim 12, wherein the power saving radio configuration results in use of more communication resources than the at least one other radio configuration.

15. The portable communication device of claim 14, wherein the power saving radio configuration is selected from the group comprising RC1 and RC2 and the another radio configuration is selected from the group comprising RC3 and RC4.

16. The portable communication device of claim 12, wherein controller is further configured to form a request message to include the radio configuration request indicator and wherein the transmitter is configured to transmit the request message to the base station.

17. The portable communication device of claim 16, wherein the request message comprises a Service Request Message based on a request record.

18. The portable communication device of claim 16, the request message comprises a Short Message Service (SMS) message.

19. A base station configured to provide wireless services to a portable communication device capable of operating in accordance with any one of a plurality of radio configurations, the base station comprising:

controller configured to assign a radio configuration to a portable communication device based on a radio configuration request indicator received from the portable communication device, the power saving radio configuration request indicator requesting assignment of a power saving radio configuration for reverse link transmissions, the power saving radio configuration resulting in less average power consumption at the portable communication device than at least one other radio configuration.

20. The base station of claim 19, wherein the controller is further configured to assign the radio configuration based further on a remaining user capacity of the base station.

21. The base station of claim 19, wherein the controller is further configured to assign the radio configuration based further on remaining battery charge of a battery within the portable communication device.

22. A portable communication device capable of operating in accordance with any one of a plurality of radio configurations, the portable communication device comprising:

a controller configured to determine an emergency call has been initiated;

a transmitter configured to transmit the revision value identifying a mobile protocol revision to a base station, the mobile protocol revision associated with a power saving radio configuration for reverse link transmissions, the power saving radio configuration resulting in less average power consumption at the portable communication device than another radio configuration associated with another mobile protocol revision.

23. The portable communication device of claim 22, wherein the first mobile protocol revision is defined by an IS-95 CDMA communication standard and the second mobile protocol revision is defined by an IS-2000 CDMA communication standard.