APPARATUS AND METHODS FOR ENHANCED MOBILE POWER MANAGEMENT

• US 20150296459A1
• Filed: 09/10/2013
• Published: 10/15/2015
• Est. Priority Date: 12/04/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: TABATABAEI YAZDI, Seyed Mohammadsadegh, Zhu, Xipeng, Pica, Francesco, Sambhwani, Sharad Deepak, Kapoor, Rohit
• Granted Patent: US 9,516,597 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0222 in packet switched networks
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods and apparatus for power management comprise detecting, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination. Further, the methods and apparatus comprise sending a state transition indication to the network entity in response to detecting the state transition trigger. Moreover, the methods and apparatus comprise adjusting a state of the UE based at least in part on sending the state transition indication to the network entity.

Claims

1. A method of power management, comprising:

detecting, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination;

sending a state transition indication to the network entity in response to detecting the state transition trigger; and

adjusting a state of the UE based at least in part on sending the state transition indication to the network entity.

2. The method of claim 1, wherein the state transition indication comprises at least one of an additional bit to indicate UE autonomous state transition and two bits to indicate a desired UE target radio resource control (RRC) state.

3. The method of claim 2, wherein the state transition indication is included in an RRC message, including at least one of a signal connection release indication (SCRI) and a target state indication, on the control plane in response to the state transition trigger indicating the current data transmission termination.

4. The method of claim 3, wherein the current data termination comprises at least one of an expiration of an inactivity timer and a determination of a last packet transmitted to the network entity.

5. The method of claim 3, wherein the target state indication specifies a UE target state, and wherein the UE target state includes at least one of an Idle, a Forward Access Channel (CELL_FACH), Cell Paging Channel (CELL_PCH) and a UTRAN Registration Area (CELL_URA).

6. The method of claim 2, wherein the state transition indication is included in at least one of a media access control (MAC) message and radio link control (RLC) message, including at least one of an SCRI and a target state indication embedded in a last packet on a user plane in response to the state transition trigger indicating the anticipated data transmission termination.

7. The method of claim 6, wherein the anticipated data termination comprises at least one of an expiration of an inactivity timer and a determination of a last packet of data to be transmitted to the network entity.

8. The method of claim 6, wherein the target state indication specifies a UE target state, and wherein the UE target state includes at least one of an Idle, a Forward Access Channel (CELL_FACH), Cell Paging Channel (CELL_PCH) and a UTRAN Registration Area (CELL_URA).

9. The method of claim 1, wherein adjusting the state of the UE comprises entering a low power state.

10. The method of claim 9, wherein entering the low power state comprises entering before or after receiving a data reception acknowledgement message (ACK) from the network entity.

11. The method of claim 9, wherein entering the low power state without receiving a network originated low power initiation message.

12. The method of claim 1, further comprising releasing a network connection after sending the state transition indication to the network entity.

13. A computer program product, comprising:

a computer-readable medium, including;

at least one instruction executable to cause a computer to detect, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination;

at least one instruction executable to cause a computer to send a state transition indication to the network entity in response to detecting the state transition trigger; and

at least one instruction executable to cause a computer to adjust a state of the UE based at least in part on sending the state transition indication to the network entity.

14. An apparatus for wireless communication, comprising:

means for detecting, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination;

means for sending a state transition indication to the network entity in response to detecting the state transition trigger; and

means for adjusting a state of the UE based at least in part on sending the state transition indication to the network entity.

15. An apparatus, comprising:

a memory storing executable instructions; and

a processor in communication with the memory, wherein the processor is configured to execute the instructions to;

detect, at a user equipment (UE), a state transition trigger, wherein the state transition trigger indicates a current data transmission termination or an anticipated data transmission termination;

send a state transition indication to the network entity in response to detecting the state transition trigger; and

adjust a state of the UE based at least in part on sending the state transition indication to the network entity.