Beam management in a wireless network
AssigneeInterDigital Patent Holdings, Inc.
InventorsFengjun Xi, Wei Chen, Kyle Jung-Lin Pan, Moon-il Lee, Chunxuan Ye
Life of this patent
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Abstract
A wireless transmit/receive unit (WTRU) may receive a first downlink control information (DCI) in a first slot. The first DCI may include an indication of a first quasi co-location (QCL) reference. The WTRU may receive a second DCI in a second slot. The second DCI may include scheduling information for a first physical downlink shared channel (PDSCH) transmission. The WTRU may receive the first PDSCH transmission in accordance with the first QCL reference indicated by the first DCI received in the first slot and in accordance with the scheduling information for the first PDSCH transmission included in the second DCI received in the second slot.
Claims17
A wireless transmit/receive unit (WTRU), the WTRU comprising:
- a processor and a transceiver, the processor and the transceiver configured to:
- receive an activation command for a first transmission configuration indication (TCI) state;
- receive a first downlink control information (DCI) in a first slot, the first DCI comprising an indication of a first quasi co-location (QCL) reference in a TCI field of the first DCI, wherein the first QCL reference corresponds to the first TCI state;
- receive a second DCI in a second slot, the second DCI comprising an indication of a second QCL reference in a second TCI field of the second DCI and scheduling information for a first physical downlink shared channel (PDSCH) transmission;
- and
- receive the first PDSCH transmission in accordance with the first QCL reference indicated by the first DCI received in the first slot based on a time value associated with applying the second QCL reference indicated in the second TCI field of the second DCI not having been reached, and wherein the first PDSCH transmission is received in accordance with the scheduling information for the first PDSCH transmission comprised in the second DCI received in the second slot.
A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
- receiving an activation command for a first transmission configuration indication (TCI) state;
- receiving a first downlink control information (DCI) in a first slot, the first DCI comprising an indication of first quasi co-location (QCL) reference in a TCI field of the first DCI, wherein the first QCL reference corresponds to the first TCI state;
- receiving a second DCI in a second slot, the second DCI comprising an indication of a second QCL reference in a second TCI field of the second DCI and scheduling information for a first physical downlink shared channel (PDSCH) transmission;
- and
- receiving the first PDSCH transmission in accordance with the first QCL reference indicated by the first DCI received in the first slot based on a time value associated with applying the second QCL reference indicated in the second TCI field of the second DCI not having been reached, and wherein the first PDSCH transmission is received in accordance with the scheduling information for the first PDSCH transmission comprised in the second DCI received in the second slot.
A base station, the base station comprising:
- a processor and a transceiver, the processor and the transceiver configured to:
- send an activation command for a first transmission configuration indication (TCI) state;
- send a first downlink control information (DCI) to a wireless transmit/receive unit (WTRU) in a first slot, the first DCI comprising an indication of first quasi co-location (QCL) reference in a TCI field of the first DCI, wherein the first QCL reference corresponds to the first TCI state;
- send a second DCI to the WTRU in a second slot, the second DCI comprising an indication of a second QCL reference in a second TCI field of the second DCI and scheduling information for a first physical downlink shared channel (PDSCH) transmission;
- and
- send the first PDSCH transmission to the WTRU in accordance with the first QCL reference indicated by the first slot based on a time value associated with applying the second QCL reference indicated in the second TCI field of the second DCI not having been reached, and wherein the first PDSCH transmission is received in accordance with the scheduling information for the first PDSCH transmission comprised in the second DCI sent in the second slot.
Dependencies are inferred from the claim text.