Trigger method for aperiodic channel status information reports and base station
A channel state information, aperiodic technology, applied in the field of communication, can solve the problem of inflexible triggering method of aperiodic CSI report, and achieve the effect of saving trigger signaling overhead, improving flexibility, and saving transmission overhead
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Embodiment 1
[0047] In the FDD system, in the PDCCH with a specific downlink control information format, when CQI request=1, and the PDCCH schedules the user equipment to send the PUSCH on its uplink primary component carrier PCC, the user equipment is triggered to feed back a set of downlink component carrier non- Periodic CSI report. Wherein, the set of downlink component carriers in this embodiment includes: the downlink primary component carrier of the user equipment, and the corresponding uplink component carrier among the downlink secondary component carriers configured or activated by the current user equipment is unconfigured or unavailable for the user equipment. Activated downlink secondary component carrier (if there is such a downlink secondary component carrier).
[0048] Otherwise, when CQI request=1 and the PDCCH schedules the user equipment to send PUSCH on its uplink secondary component carrier SCC, trigger the user equipment to feed back the aperiodic CSI report of the do...
Embodiment 2
[0053] In the FDD system, the base station configures or activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1, and two downlink secondary component carriers DL CC2 and DL CC3 (the corresponding The uplink secondary component carriers UL CC2 and UL CC3 are not configured or activated). Wherein, the higher layer configures DL CC0 and DL CC2 as a group of component carriers; DL CC1 and DL CC3 as a group of component carriers.
[0054] If in a subframe, when the user equipment detects a PDCCH belonging to it with a specific downlink control information format, the PDCCH schedules the user equipment to send PUSCH on UL CC0, and where CQI request=1, the user equipment is triggered Feedback the aperiodic CSI report of DLCC0 and DL CC2.
[0055] If in a subframe, when the user equipment detects a PDCCH belonging to it with a specific downlink control information format, the PDCCH schedules the user equipment to sen...
Embodiment 3
[0057]In the FDD system, the base station configures or activates a pair of primary component carriers DL CC0 and UL CC0, a pair of secondary component carriers DL CC1 and UL CC1, and two downlink secondary component carriers DL CC2 and DL CC3 (the corresponding The uplink secondary component carriers UL CC2 and UL CC3 are not configured or activated). Wherein, the higher layer configures DL CC0 and DL CC2 as a group of component carriers; DL CC1 and DL CC3 as a group of component carriers.
[0058] When the base station configures a trigger command to trigger the user equipment to feed back an aperiodic CSI report of a component carrier:
[0059] If in a subframe, when the user equipment detects a PDCCH belonging to it with a specific downlink control information format, the PDCCH schedules the user equipment to send PUSCH on UL CC0, and where CQI request=1, the user equipment is triggered to feedback Aperiodic CSI reporting for DL CC0.
[0060] If in a subframe, when the...
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