Abstract
A method and apparatus are used for detecting a radio link (RL) failure and a post verification process. A quality of a downlink fractional dedicated physical channel (F-DPCH) is monitored once a transmission on an enhanced dedicated channel (E-DCH) has begun. It is determined whether the quality of the downlink F-DPCH is below a predefined threshold. If the quality is below the predefined threshold, then an occurrence of an RL failure is declared and a transmission over the E-DCH in a cell forward access channel (CELL_FACH) state is terminated. In a case of the post verification failure, E-DCH resources are released.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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3G | 14/09/2009 | ISLD-200910-006 | INTERDIGITAL INC |
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No | Family Member | |||
3G | 31/10/2019 | ISLD-201909-015 | INTERDIGITAL INC |
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No | Family Member |
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CN103889072B | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Claim
1-26. (canceled)
27. A wireless transmit receive unit (WTRU), the WTRU comprising:
a processor configured to: determine a quality of a downlink channel when operating in a cell forward access channel (CELL_FACH) state; determine that a RL failure has occurred based on the quality of the downlink channel being below a predefined threshold over a predetermined period of time; release an enhanced dedicated channel (E-DCH) resource; and reset a medium access control (MAC) entity.
28. The WTRU of claim 27, wherein the downlink channel comprises a fractional dedicated physical channel (F-DPCH).
29. The WTRU of claim 27, wherein the downlink channel comprises an E-DCH physical control channel (DPCCH).
30. The WTRU of claim 27, wherein the E-DCH comprises an E-DCH dedicated physical control channel (E-DPCCH).
31. The WTRU of claim 27, wherein the E-DCH comprises an E-DCH dedicated physical data channel (E-DPDCH).
32. The WTRU of claim 27, wherein a physical layer indicates to a MAC layer that the RL failure has occurred and the MAC layer stops sending data to the physical layer.
33. The WTRU of claim 27, wherein the processor is configured to stop a transmission associated with an enhanced dedicated channel (E-DCH).
34. The WTRU of claim 33, wherein the processor is further configured to, after stopping the transmission associated with the enhanced dedicated channel (E-DCH):
wait a predefined amount of time, start a backoff timer; and wait for the backoff timer to expire prior to initiating another RACH access.
35. The WTRU of claim 34, wherein the processor is further configured to terminate the backoff timer and perform a cell reselection procedure upon the cell reselection being met.
36. A method implemented in a wireless transmit receive unit (WTRU) for detecting a radio link (RL) failure in cell forward access channel (CELL_FACH) state, the method comprising:
determining a quality of a downlink channel when operating in in cell forward access channel (CELL_FACH) state; determining that a RL failure has occurred based on the quality of the downlink channel being below a predefined threshold over a predetermined period of time; releasing an enhanced dedicated channel (E-DCH) resource; and resetting a medium access control (MAC) entity.
37. The method of claim 36, wherein the downlink channel comprises a fractional dedicated physical channel (F-DPCH).
38. The method of claim 36, wherein the downlink channel comprises an E-DCH physical control channel (DPCCH).
39. The method of claim 36, wherein the E-DCH comprises an E-DCH dedicated physical control channel (E-DPCCH).
40. The method of claim 36, wherein the E-DCH comprises an E-DCH dedicated physical data channel (E-DPDCH).
41. The method of claim 36, wherein a physical layer indicates to a MAC layer that the RL failure has occurred and the MAC layer stops sending data to the physical layer.
42. The method of claim 36, further comprising stopping a transmission associated with an enhanced dedicated channel (E-DCH).
43. The method of claim 36, further comprising, after stopping the transmission associated with the enhanced dedicated channel (E-DCH):
waiting a predefined amount of time; starting a backoff timer, and waiting for the backoff timer to expire prior to initiating another RACH access.
44. The method of claim 43, further comprising terminating the backoff timer and performing a cell reselection procedure upon the cell reselection being met.
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
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