Method and apparatus for operating in a discontinuous reception mode employing carrier aggregation
First Claim
1. A long term evolution-advanced (LTE-A) wireless transmit/receive unit (WTRU), the LTE-A WTRU comprising:
- a transceiver configured to receive discontinuous reception (DRX) configuration information;
a processor operatively coupled to the transceiver, the processor and transceiver, in response to the received DRX configuration information, configured to monitor one or more LTE-A physical downlink control channels (PDCCHs) in subframes in a first frequency band during an active time; and
the processor and transceiver, in response to detecting a downlink assignment transmission in the LTE-A PDCCHs in the first frequency band during the active time, are further configured to receive an LTE-A physical downlink shared channel (PDSCH) on assigned subcarriers at a second frequency band indicated by the downlink assignment transmission,wherein the LTE-A PDSCH is received K subframes after an end of the downlink assignment transmission,wherein a round trip time (RTT) of a HARQ of the LTE-A PDSCH is increased by K subframes,wherein K is equal to at least 2, andwherein the second frequency band is different than the first frequency band.
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Abstract
Methods and apparatus are described. A long term evolution-advanced (LTE-A) wireless transmit/receive unit (WTRU) includes a transceiver and a processor. The transceiver receives discontinuous reception (DRX) configuration information. The processor, in response to the received DRX information, controls the transceiver to monitor LTE-A physical downlink control channels (PDCCHs) in subframes in a first frequency band during an active time. The processor further, in response to detecting a downlink assignment in an LTE-A PDCCH in the first frequency band during the active time, wherein the downlink assignment indicates a second frequency band and assigned subcarriers within the second frequency band, to receive an LTE-A physical downlink shared channel (PDSCH) K subframes after a transmission of the downlink assignment. The second frequency band is different than the first frequency band.
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Citations
9 Claims
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1. A long term evolution-advanced (LTE-A) wireless transmit/receive unit (WTRU), the LTE-A WTRU comprising:
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a transceiver configured to receive discontinuous reception (DRX) configuration information; a processor operatively coupled to the transceiver, the processor and transceiver, in response to the received DRX configuration information, configured to monitor one or more LTE-A physical downlink control channels (PDCCHs) in subframes in a first frequency band during an active time; and the processor and transceiver, in response to detecting a downlink assignment transmission in the LTE-A PDCCHs in the first frequency band during the active time, are further configured to receive an LTE-A physical downlink shared channel (PDSCH) on assigned subcarriers at a second frequency band indicated by the downlink assignment transmission, wherein the LTE-A PDSCH is received K subframes after an end of the downlink assignment transmission, wherein a round trip time (RTT) of a HARQ of the LTE-A PDSCH is increased by K subframes, wherein K is equal to at least 2, and wherein the second frequency band is different than the first frequency band. - View Dependent Claims (2, 3)
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4. A method implemented by a long term evolution-advanced (LTE-A) wireless transmit/receive unit (WTRU), the method comprising:
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receiving, by the LTE-A WTRU, discontinuous reception (DRX) configuration information; in response to the received DRX configuration information, monitoring, by the LTE-A WTRU, one or more LTE-A physical downlink control channels (PDCCHs) in subframes in a first frequency band during an active time; and in response to detecting a downlink assignment transmission in the LTE-A PDCCHs in the first frequency band during the active time, is further configured to receive an LTE-A physical downlink shared channel (PDSCH) on assigned subcarriers at a second frequency band indicated by the downlink assignment transmission, wherein the LTE-A PDSCH is received K subframes after an end of the downlink assignment transmission, wherein a round trip time (RTT) of a HARQ of the PDSCH is increased by K subframes, wherein K is equal to at least 2, and wherein the second frequency band is different than the first frequency band. - View Dependent Claims (5, 6)
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7. A long term evolution-advanced (LTE-A) eNodeB, the LTE-A eNodeB comprising:
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a processor operatively coupled to a transceiver, the processor and transceiver configured to transmit discontinuous reception (DRX) configuration information to an LTE-A wireless transmit/receive unit (WTRU); the processor and transceiver are further configured to transmit an LTE-A physical downlink control channel (PDCCH) in at least one subframe in an active time in a first frequency band having a downlink assignment for the LTE-A WTRU, wherein the active time is based on the DRX configuration information, wherein the downlink assignment indicates a second frequency band and assigned subcarriers within the second frequency band; and the processor and transceiver are further configured to transmit an LTE-A physical downlink shared channel (PDSCH) on the assigned subcarriers at the second frequency band indicated by the downlink assignment, wherein the LTE-A PDSCH is received K subframes after an end of transmission of the downlink assignment, wherein a round trip time (RTT) of a HARQ of the PDSCH is increased by K subframes, wherein K is equal to at least 2, and wherein the second frequency band is different than the first frequency band. - View Dependent Claims (8, 9)
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Specification