IP Library Granted Patent US 8,432,843
Granted Patent B2
US 8,432,843 · App. 12/430,333 · Granted Apr 30, 2013

Method and system for the control of discontinuous reception in a wireless network

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Quick Facts
Patent No.
US 8,432,843
App. No.
12/430,333
Granted
Apr 30, 2013
Kind
B2
Abstract

Methods and apparatus for controlling discontinuous reception on a mobile device and in particular to control a short discontinuous reception timer in response to receipt of a medium access control control element. The methods and apparatus include stopping, restarting or maintaining the short discontinuous reception timer. Methods and apparatus for limiting or stopping a retransmission timer by providing user equipment with a maximum retry value for transmissions, by providing a maximum redundant version value, or by providing a medium access control control element to stop or prevent the start of a retransmission timer.

Claims (13)

1. A method to control a short discontinuous reception ‘DRX’ timer comprising:

checking, by a user equipment, whether a medium access control ‘MAC’ control element is received and whether a short DRX cycle is configured; and

responsive to the checking, starting the short DRX timer if the short DRX timer is not running and restarting the short DRX timer from an initial value if the short DRX timer is running.

2. The method of claim 1 , wherein the MAC control element signals a “go to sleep” command.

3. The method of claim 1 , wherein if the checking determines that the short DRX cycle is not configured, a long DRX cycle is used.

4. The method of claim 1 , wherein the method is performed on a user equipment.

5. The method of claim 4 , wherein the MAC control element is received from an evolved Node B.

6. A user equipment for controlling a short discontinuous reception ‘DRX’ timer comprising:

a communications subsystem configured to communicate with a network element and to further receive a medium access control ‘MAC’ control element; and

a processor, said processor configured to check whether the MAC control element is received and start the short DRX timer if the short DRX timer is not running and restart the short DRX timer from an initial value if the short DRX timer is running.

7. The user equipment of claim 6 , wherein the MAC control element signals a “go to sleep” command.

8. The user equipment of claim 6 , wherein if processor determines that the short DRX cycle is not configured, a long DRX cycle is used.

9. The user equipment of claim 6 , wherein the network element is an evolved Node B.

Assignments (8)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2025
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 070811/0867 →
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 Sep 18, 2010
From: RESEARCH IN MOTION CORPORATION
To: RESEARCH IN MOTION LIMITED
Reel/Frame 025009/0669 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 18, 2010
From: RESEARCH IN MOTION UK LIMITED
To: RESEARCH IN MOTION LIMITED
Reel/Frame 025009/0685 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 18, 2010
From: RESEARCH IN MOTION JAPAN LIMITED
To: RESEARCH IN MOTION LIMITED
Reel/Frame 025009/0740 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2009
From: YOUNG, GORDON PETER
To: RESEARCH IN MOTION UK LIMITED
Reel/Frame 023013/0745 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2009
From: SUZUKI, TAKASHI
To: RESEARCH IN MOTION JAPAN LIMITED
Reel/Frame 023013/0830 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2009
From: CAI, ZHIJUM; WOMACK, JAMES EARL; YU, YI
To: RESEARCH IN MOTION CORPORATION
Reel/Frame 023013/0876 →