IP Library Granted Patent US 8,320,287
Granted Patent B2
US 8,320,287 · App. 12/407,958 · Granted Nov 27, 2012

Method and system for the indication of long DRX in a wireless network

Assignee: Research In Motion Limited
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Quick Facts
Patent No.
US 8,320,287
App. No.
12/407,958
Granted
Nov 27, 2012
Kind
B2
Abstract

Methods and apparatus for configuring a discontinuous reception ‘DRX’ period at from an evolved Node B for a user equipment, including: sending a long DRX MAC CE from the eNB if preconditions are met, and at the UE determining whether a short DRX period is configured; if no, setting a long DRX period; if yes, determining whether a long DRX command was received in a medium access control ‘MAC’ control element; if yes, setting the long DRX period; if no, starting a short DRX timer and setting a short DRX period.

Claims (28)

1. A method for configuring a discontinuous reception ‘DRX’ period at a user equipment comprising:

determining whether a short DRX period is configured at the user equipment;

when no short DRX period is configured, setting a long DRX period;

when the short DRX period is configured, determining whether a long DRX command was received in a medium access control ‘MAC’ control element;

when a long DRX command is received in the MAC control element, setting a long DRX period and delaying activation of the long DRX period in accordance with a timing margin configured to synchronize the user equipment DRX configuration with an evolved node B ‘eNB’;

when a long DRX command is not received in the MAC control element, starting a short DRX timer and setting a short DRX period.

2. The method of claim 1 , wherein the user equipment maintains a short DRX configuration.

3. The method of claim 1 , wherein the DRX is configured for non real time traffic.

4. The method of claim 1 , further comprising the step of stopping a short DRX timer if the long DRX command in the MAC control element was received.

5. A user equipment adapted to configure a discontinuous reception ‘DRX’ period, comprising:

a communications subsystem, said communications subsystem adapted to receive a medium access control ‘MAC’ control element;

a memory, said memory adapted to store information for the medium access control element; and

a processor, said processor adapted to:

determine whether a short DRX period is configured at the user equipment;

when no short DRX period is configured, set a long DRX period;

when the short DRX period is configured, determine whether a long DRX command was received in the medium access control ‘MAC’ control element;

when a long DRX command is received in the MAC control element, set a long DRX period and delay activation of the long DRX period in accordance with a timing margin configured to synchronize the user equipment DRX configuration with an evolved node B ‘eNB’;

when a long DRX command is not received in the MAC control element, start a short DRX timer and set a short DRX period.

6. The user equipment of claim 5 , wherein the memory is adapted to maintain a short DRX configuration.

7. The user equipment of claim 5 , wherein the DRX is configured for non real time traffic.

8. The user equipment of claim 5 , wherein the processor is further adapted to stop a short DRX timer if the long DRX command in the MAC control element was received.

9. The method of claim 1 , wherein timing margin is derived from a header of the MAC control element.

10. The method of claim 1 , wherein the DRX configuration comprises DRX activation and DRX deactivation.

11. The method of claim 1 , further comprising:

determining, by the user equipment, the timing margin.

12. The user equipment of claim 5 , wherein timing margin is derived from a header of the MAC control element.

13. The user equipment of claim 5 , wherein the DRX configuration comprises DRX activation and DRX deactivation.

14. The user equipment of claim 5 , wherein the processor is further configured to determining the timing margin.

Assignments (12)
NUNC PRO TUNC ASSIGNMENT Recorded Jun 19, 2023
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 064270/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2023
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 064104/0103 →
CHANGE OF NAME Recorded Oct 14, 2014
From: RESEARCH IN MOTION LIMITED
To: BLACKBERRY LIMITED
Reel/Frame 033987/0576 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: CAI, ZHIJUN; WOMACK, JAMES EARL
To: RESEARCH IN MOTION CORPORATION
Reel/Frame 023482/0607 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: RESEARCH IN MOTION CORPORATION
To: RESEARCH IN MOTION LIMITED
Reel/Frame 023482/0814 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: RESEARCH IN MOTION UK LIMITED
To: RESEARCH IN MOTION LIMITED
Reel/Frame 023482/0863 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: RESEARCH IN MOTION JAPAN LIMITED
To: RESEARCH IN MOTION LIMITED
Reel/Frame 023482/0680 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: SUZUKI, TAKASHI
To: RESEARCH IN MOTION JAPAN LIMITED
Reel/Frame 023482/0412 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2009
From: YOUNG, GORDON PETER
To: RESEARCH IN MOTION UK LIMITED
Reel/Frame 023482/0523 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 9, 2009
From: SUZUKI, TAKASHI
To: RESEARCH IN MOTION JAPAN LIMITED
Reel/Frame 022934/0077 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 9, 2009
From: YOUNG, GORDON PETER
To: RESEARCH IN MOTION UK LIMITED
Reel/Frame 022934/0238 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 9, 2009
From: CAI, ZHIJUN; WOMACK, JAMES EARL
To: RESEARCH IN MOTION CORPORATION
Reel/Frame 022934/0191 →
Continuity (2)
Provisional Application 61038432 · Mar 21, 2008
Related Publication 20090238098A1 · Sep 24, 2009