Method and apparatus for enabling cell reselection for WTRU operating in discontinuous reception

Patent metadata

Field	Value
Publication number	US-10244432-B2
Application number	US-201715643338-A
Country	US
Kind code	B2
Filing date	Jul 6, 2017
Priority date	Feb 1, 2008
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A method for discontinuous reception (DRX) implemented in a wireless transmit/receive unit (WTRU) during cell reselection including initiating cell reselection; disabling DRX operation, wherein disabling DRX operation enables continuous reception; transmitting a CELL UPDATE message; receiving a CELL UPDATE CONFIRM message; and enabling DRX operation based on the received CELL UPDATE CONFIRM message.

First claim

What is claimed is:

1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
determine that the WTRU has a high-speed downlink shared channel (HS-DSCH) radio network temporary identifier (H-RNTI);
enable DRX operation in response to the determination that the WTRU has the H-RNTI;
disable discontinuous reception (DRX) operation in response to a release of the H-RNTI, wherein being configured to disable DRX operation comprises being configured to start continuous reception operation in the WTRU;
receive an E-DCH resource;
release the E-DCH resource;
start a timer, wherein being configured to start the timer is associated with the release of the E-DCH resource; and
enable DRX operation in response to expiration of the timer.

2. The WTRU of claim 1 , wherein the processor is further configured to receive an H-RNTI associated with a new cell.

3. The WTRU of claim 2 , wherein the processor is further configured to reenable DRX operation in response to a determination that the WTRU has the H-RNTI associated with the new cell.

4. The WTRU of claim 1 , wherein to perform the cell reselection the processor is further configured to:
transmit a CELL UPDATE message associated with performance of the cell reselection; and
receive a CELL UPDATE CONFIRM message that indicates that the cell reselection is successful.

5. The WTRU of claim 1 , wherein the processor is further configured to determine that the WTRU is in a CELL_FACH state when the WTRU has the H-RNTI.

6. The WTRU of claim 1 , wherein the processor is further configured to perform cell reselection, and wherein the release of the H-RNTI is associated with the cell reselection.

7. A method comprising:
determining that the WTRU has a high-speed downlink shared channel (HS-DSCH) radio network temporary identifier (H-RNTI);
enabling DRX operation in response to the determination that the WTRU has the H-RNTI;
performing cell reselection and releasing the H-RNTI;
disabling discontinuous reception (DRX) operation in response to the release of the H-RNTI, wherein disabling DRX operation comprises starting continuous reception operation in the WTRU;
receiving an E-DCH resource;
releasing the E-DCH resource;
starting a timer, wherein the starting of the timer is associated with the releasing of the E-DCH resource; and
enabling DRX operation in response to expiration of the timer.

8. The method of claim 7 , further comprising receiving an H-RNTI associated with a new cell.

9. The method of claim 8 , further comprising reenabling DRX operation in response to a determination that the WTRU has the H-RNTI associated with the new cell.

10. The method of claim 7 , further comprising:
transmitting a CELL UPDATE message associated with performance of the cell reselection; and
receiving a CELL UPDATE CONFIRM message that indicates that the cell reselection is successful.

11. The method of claim 7 , further comprising determining that the WTRU is in a CELL_FACH state when the WTRU has the H-RNTI.

Assignees

• Interdigital Patent Holdings Inc

Inventors

• Di Girolamo Rocco
• Pani Diana
• Cave Christopher R
• Marinier Paul
• Roy Vincent

Classifications

• H04W60/00

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title

• Y02D70/20

  Cross-Sectional Technologies · mapped topic

• H04W76/28 Primary

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• H04W36/0011 Primary

  for data sessions of end-to-end connection · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title