US2014273872A1PendingUtilityA1

Method and apparatus for lte radio link failure determiniation in drx mode

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Assignee: INTERDIGITAL PATENT HOLDINGSPriority: Sep 22, 2008Filed: May 30, 2014Published: Sep 18, 2014
Est. expirySep 22, 2028(~2.2 yrs left)· nominal 20-yr term from priority
Inventors:Joseph S. LevyCharles A. DenneanStephen E. TerryPeter S. WangJean-Louis GauvreauShankar SomasundaramUlises Olvera-HernandezPaul MarinierGuodong Zhang
H04W 52/0216H04B 17/309H04W 76/18H04L 1/20H04W 76/19Y02D30/70H04W 76/28H04W 24/10H04W 28/04H04W 24/08H04L 7/0083
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Claims

Abstract

A method and apparatus for detecting radio link failure (RLF) in a wireless transmit receive unit (WTRU) includes the WTRU performing a series of radio link measurements during a discontinuous reception (DRX) on-duration, comparing each of the series of radio link measurements to a threshold, and determining that the series of radio link measurements indicates an out-of-synch condition.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of radio link failure (RLF) in a wireless transmit receive unit (WTRU), the method comprising:
 performing a series of radio link measurements during discontinuous reception (DRX) mode;   detecting a predetermined number of consecutive out-of-synch conditions based on the series of radio link measurements;   starting a timer upon detecting the predetermined number of consecutive out-of-synch conditions; and   while operating in DRX mode, continuing the series of radio link measurements using an evaluation period corresponding to non-DRX mode.

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