Method for transitioning between multiple reception levels

• US 9,516,695 B2
• Filed: 09/01/2015
• Issued: 12/06/2016
• Est. Priority Date: 10/30/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Sung Duck, Lee, Young Dae, Park, Sung Jun, Yi, Seung June
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): KAO, WEI PO ERIC
• Application Number:
  US14/842,470
• Publication Number:
  US 20150373775A1
• Time in Patent Office: 462 Days
• Field of Search: 370310-350
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

There is provided a method for enabling a user equipment (UE) to transition between a non-discontinuous reception (Non-DRX) level and at least one discontinuous reception (DRX) level. The UE in a DRX level wakes up periodically to monitor a scheduling channel. The method includes receiving a DRX indicator in a Non-DRX level with continuously monitoring the scheduling channel and transitioning from the Non-DRX level to a DRX level indicated by the DRX indicator. The UE can transition between multiple DRX levels by an explicit command/signaling.

Claims

1. A method for enabling a user equipment (UE) to transition between a non-discontinuous reception (Non-DRX) level and one of two discontinuous reception (DRX) levels, a short DRX level and a long DRX level, the method comprising:

receiving a DRX indicator while the UE is operating in a Non-DRX level, the DRX indicator indicating either the short DRX level or the long DRX level, wherein the UE has stored therein configuration information for the short and long DRX levels,

wherein a DRX period for the short DRX level is different from a DRX period for the long DRX level; and

transitioning from the Non-DRX level to the short DRX level or the long DRX level according to the received DRX indicator.

2. The method of claim 1, wherein a first or second index of the DRX indicator, indicating the short DRX level or the long DRX level, is represented by a bit format.

3. The method of claim 1, wherein if the first DRX level is the short DRX level, the UE transitions from the first DRX level to the long DRX level when a predetermined amount of time passes after transitioning from the Non-DRX level to the first DRX level.

4. The method of claim 1, wherein the DRX indicator is received through a medium access control (MAC) message.

5. A user equipment (UE) configured to transition between a non-discontinuous reception (Non-DRX) level and at least one of two discontinuous reception (DRX) levels, a short DRX level and a long DRX level, the UE comprising:

a processor; and

a memory operatively coupled with the processor and storing instructions that when executed by the processor causes to the UE to;

receive a DRX indicator while the UE is operating in a Non-DRX level, the DRX indicator indicating either the short DRX level or the long DRX level,

wherein the memory has stored therein configuration information for the short and long DRX levels,

wherein a DRX period for the short DRX level is different from a DRX period for the long DRX level; and

transition from the Non-DRX level to a first DRX level indicated by the DRX indicator, the first DRX level being the short DRX level or the long DRX level, according to the received DRX indicator.

6. The UE of claim 5, wherein a first or second index of the DRX indicator, indicating the short DRX level or the long DRX level, is represented by a bit format.

7. The UE of claim 5, wherein if the first DRX level is the short DRX level, the processor causes the UE to transition from the first DRX level to the long DRX level when a predetermined amount of time passes after transitioning from the Non-DRX level to the first DRX level.

8. The UE of claim 5, wherein the DRX indicator is received through a medium access control (MAC) message.