United States Patent 7,701,844
Terry April 20, 2010
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Method and apparatus for recognizing radio link failures associated with HSUPA and HSDPA channels
Abstract
A method and system for detecting radio link (RL) failures between a wireless transmit/receive unit (WTRU) and a Node-B are disclosed. When signaling radio bearers (SRBs) are supported by high speed uplink packet access (HSUPA), an RL failure is recognized based on detection of improper operation of at least one of an absolute grant channel (AGCH), a relative grant channel (RGCH), a hybrid-automatic repeat request (H-ARQ) information channel (HICH), an enhanced uplink dedicated physical control channel (E-DPCCH) and an enhanced uplink dedicated physical data channel (E-DPDCH). When SRBs are supported by high speed downlink packet access (HSDPA), an RL failure is recognized based on detection of improper operation of at least one of a high speed shared control channel (HS-SCCH), a high speed physical downlink shared channel (HS-PDSCH) and a high speed dedicated physical control channel (HS-DPCCH).
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Inventors: Terry; Stephen E. (Northport, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/322,704
Filed: December 30, 2005
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60651594 Feb., 2005
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Current U.S. Class: 370/216 ; 370/242
Current International Class: G01R 31/08 (20060101)
