Method and apparatus for monitoring for radio link failure
First Claim
Patent Images
1. A method of performing radio link monitoring, which is implemented by a wireless transmit/receive unit (WTRU), the method comprising:
- operating with (1) a plurality of component carriers including a primary component carrier (PCC) and (2) at least one secondary component carrier, wherein one of the at least one secondary component carrier is configured as a special component carrier;
monitoring out-of-sync indications of the PCC and out-of-sync indications of the special component carrier;
detecting whether a radio link failure of the special component carrier has occurred; and
sending a notification including measurement information associated with any of the carriers the WTRU is operating with and information associated with the radio link failure of the special component carrier to an evolved Node B (eNB) on condition that the radio link failure of the special component carrier has occurred.
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Abstract
Methods and apparatus are described for monitoring for a radio link failure in a long term evolution-advanced (LTE-A) system operated with carrier aggregation. The methods include criteria for determining radio link failure, recovery events, and the actions that a wireless transmit/receive unit (WTRU) may take upon the occurrence of such events.
36 Citations
20 Claims
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1. A method of performing radio link monitoring, which is implemented by a wireless transmit/receive unit (WTRU), the method comprising:
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operating with (1) a plurality of component carriers including a primary component carrier (PCC) and (2) at least one secondary component carrier, wherein one of the at least one secondary component carrier is configured as a special component carrier; monitoring out-of-sync indications of the PCC and out-of-sync indications of the special component carrier; detecting whether a radio link failure of the special component carrier has occurred; and sending a notification including measurement information associated with any of the carriers the WTRU is operating with and information associated with the radio link failure of the special component carrier to an evolved Node B (eNB) on condition that the radio link failure of the special component carrier has occurred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless transmit/receive unit (WTRU) including a transmitter, a receiver, and a processor, wherein:
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the receiver is configured to operate with (1) a plurality of component carriers including primary component carrier (PCC) and (2) at least one secondary component carrier, wherein one of the at least one secondary component carrier is configured as a special component carrier; the receiver and the processor are configured to monitor out-of-synch indications of the PCC and out-of-synch indications of the special component carrier; the processor is configured to detect whether a radio link failure of the special component carrier has occurred; and the transmitter is configured to send a notification including measurement information associated with any of the carriers the WTRU is operating with and information associated with the radio link failure of the special component carrier to an evolved Node B (eNB) on condition that radio link failure of the special component carrier has occurred. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification