IP Library Granted Patent US 11,076,440
Granted Patent B2
US 11,076,440 · App. 15/312,747 · Granted Jul 27, 2021

Methods and apparatus for reducing collisions between CDRX and paging operations

Inventors: Chintan Shirish Shah (Chula Vista, CA); Jiming Guo (Beijing, CN)
Assignee: QUALCOMM Incorporated
H04W76/19H04W68/005H04W76/28H04W68/00
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Quick Facts
Patent No.
US 11,076,440
App. No.
15/312,747
Granted
Jul 27, 2021
Kind
B2
Abstract

Certain aspects of the present disclosure relate to techniques and apparatus for reducing collisions between CDRX and paging operations.

Claims (36)

1. A method for wireless communications by a user equipment (UE), comprising:

entering a mode wherein the UE alternates between listening periods and non-listening periods while connected to a first radio access technology (RAT) network, wherein the listening periods are determined based on an offset value assigned by the first RAT network;

determining that a plurality of the listening periods each conflict with one or more paging intervals in a second RAT network;

taking action to obtain a new offset value in an attempt to avoid conflicts between one or more subsequent listening periods and the one or more paging intervals in the second RAT network;

determining that one or more subsequent listening periods conflict with one or more paging intervals in the second RAT network after taking action to obtain the new offset value; and

determining not to take action to obtain another new offset value in response to the determination that the one or more subsequent listening periods conflict with the one or more paging intervals in the second RAT network.

2. The method of claim 1 , wherein taking action to obtain a new offset value comprises taking action to disconnect from and reconnect to the first RAT network.

3. The method of claim 2 , wherein taking action to disconnect from and reconnect to the first RAT network comprises declaring a radio link failure (RLF).

4. The method of claim 2 , wherein taking action to disconnect from and reconnect to the first RAT network includes sending a radio resource control (RRC) connection reestablishment request.

5. The method of claim 1 , wherein taking action to obtain a new offset value comprises transmitting a request to the first RAT network to assign a new offset value.

6. The method of claim 1 , wherein the UE is a single-radio device.

7. The method of claim 1 , wherein the mode is a radio resource control (RRC) connected state discontinuous reception operation mode.

8. An apparatus for wireless communications, comprising:

a processing system configured to:

enter a mode wherein the apparatus alternates between listening periods and non-listening periods while connected to a first radio access technology (RAT) network, wherein the listening periods are determined based on an offset value assigned by the first RAT network,

determine that a plurality of the listening periods each conflict with one or more paging intervals in a second RAT network, and

take action to obtain a new offset value in an attempt to avoid conflicts between one or more subsequent listening periods and the one or more paging intervals in the second RAT network,

determine that one or more subsequent listening periods conflict with one or more paging intervals in the second RAT network after taking action to obtain the new offset value; and

determine not to take action to obtain another new offset value in response to the determination that the one or more subsequent listening periods conflict with the one or more paging intervals in the second RAT network; and

a memory coupled with the processing system.

9. The apparatus of claim 8 , wherein the processing system is configured to take action to obtain a new offset value by taking action to disconnect from and reconnect to the first RAT network.

10. The apparatus of claim 9 , wherein the processing system is configured to take action to disconnect from and reconnect to the first RAT network by declaring a radio link failure (RLF).

11. The apparatus of claim 9 , wherein the processing system is configured to take action to disconnect from and reconnect to the first RAT network by sending a radio resource control (RRC) connection reestablishment request.

12. The apparatus of claim 8 , wherein the processing system is configured to take action to obtain a new offset value by causing the apparatus to transmit a request to the first RAT network to assign a new offset value.

13. The apparatus of claim 8 , further comprising:

a single radio.

14. The apparatus of claim 8 , wherein the mode is a radio resource control (RRC) connected state discontinuous reception operation mode.

15. An apparatus for wireless communications, comprising:

means for entering a mode wherein the apparatus alternates between listening periods and non-listening periods while connected to a first radio access technology (RAT) network, wherein the listening period is determined based on an offset value assigned by the first RAT network;

means for determining that a plurality of the listening periods each conflict with one or more paging intervals in a second RAT network; and

means for taking action to obtain a new offset value in an attempt to avoid conflicts between one or more subsequent listening periods and the one or more paging intervals in the second RAT network;

means for determining that one or more subsequent listening periods conflict with one or more paging intervals in the second RAT network after taking action to obtain the new offset value; and

means for determining not to take action to obtain another new offset value in response to the determination that the one or more subsequent listening periods conflict with the one or more paging intervals in the second RAT network.

16. The apparatus of claim 15 , wherein the means for taking action to obtain a new offset value comprises means for taking action to disconnect from and reconnect to the first RAT network.

17. The apparatus of claim 16 , wherein the means for taking action to disconnect from and reconnect to the first RAT network comprises means for declaring a radio link failure (RLF).

18. The apparatus of claim 16 , wherein the means for taking action to disconnect from and reconnect to the first RAT network comprises means for sending a radio resource control (RRC) connection reestablishment request.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2016
From: SHAH, CHINTAN SHIRISH; GUO, JIMING
To: QUALCOMM INCORPORATED
Reel/Frame 040388/0752 →
Continuity (1)
Related Publication 20170196042A1 · Jul 6, 2017