Rapid selection of an antenna panel and a beam during a random access (RA)
AssigneeMediatek Inc.
InventorsTsung-Hao Tsai, Chung Hsien Hsieh, Biwei Chen
Life of this patent
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Abstract
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell). The UE initiates executing a random access procedure on the PSCell. While executing the random access procedure, the UE receives one or more reference signals on the PSCell; the UE measures the one or more reference signals to select an antenna panel and a beam to receive data on the PSCell; the UE receives, at the antenna panel, the data on the beam after the random access procedure is completed.
Claims15
A method of wireless communication of a user equipment (UE), comprising:
- receiving, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiating executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receiving a plurality of reference signals on the PSCell;
- measuring a respective reference signal on each of a plurality of beams of the PSCell, the respective reference signal being received at each of a plurality of antenna panels;
- and
- selecting an antenna panel from the plurality of antenna panels and a beam from the plurality of beams based on measurement of the respective reference signals;
- and
- receiving, at the antenna panel, the data on the beam after the random access procedure is completed.
A method of wireless communication of a user equipment (UE), comprising:
- receiving, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiating executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receiving one or more reference signals on the PSCell;
- and
- measuring the one or more reference signals to select an antenna panel and a beam to receive data on the PSCell;
- receiving, at the antenna panel, the data on the beam after the random access procedure is completed;
- determining that the UE has not received a downlink transmission assignment on the PSCell within a predetermined time period;
- determining a RSRP threshold that is a previous RSRP in response to which a base station transmitted a downlink transmission assignment on the PSCell to the UE;
- determining that a measured RSRP is greater or equal to the RSRP threshold;
- generating a boosted RSRP that is greater the measured RSRP;
- and
- sending the boosted RSRP to the base station.
An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- receive, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiate executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receive a plurality of reference signals on the PSCell;
- measure a respective reference signal on each of a plurality of beams of the PSCell, the respective reference signal being received at each of a plurality of antenna panels;
- and
- select an antenna panel from the plurality of antenna panels and a beam from the plurality of beams based on measurement of the respective reference signals;
- and
- receive, at the antenna panel, the data on the beam after the random access procedure is completed.
An apparatus for wireless communication, the apparatus being a user equipment (UE), comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- receive, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiate executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receive one or more reference signals on the PSCell;
- and
- measure the one or more reference signals to select an antenna panel and a beam to receive data on the PSCell;
- and
- receive, at the antenna panel, the data on the beam after the random access procedure is completed;
- determine that the UE has not received a downlink transmission assignment on the PSCell within a predetermined time period;
- determine a RSRP threshold that is a previous RSRP in response to which a base station transmitted a downlink transmission assignment on the PSCell to the UE;
- determine that a measured RSRP is greater or equal to the RSRP threshold;
- generate a boosted RSRP that is greater the measured RSRP;
- and
- send the boosted RSRP to the base station.
A non-transitory computer-readable medium storing computer executable code for wireless communication of a user equipment (UE), comprising code to:
- receive, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiate executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receive a plurality of reference signals on the PSCell;
- measure a respective reference signal on each of a plurality of beams of the PSCell, the respective reference signal being received at each of a plurality of antenna panels;
- and
- select an antenna panel from the plurality of antenna panels and a beam from the plurality of beams based on measurement of the respective reference signals;
- and
- receive, at the antenna panel, the data on the beam after the random access procedure is completed.
A non-transitory computer-readable medium storing computer executable code for wireless communication of a user equipment (UE), comprising code to:
- receive, on a primary cell (PCell), an indication indicating an addition of a primary secondary cell group (SCG) cell (PSCell);
- initiate executing a random access procedure on the PSCell;
- while executing the random access procedure:
- receive one or more reference signals on the PSCell;
- and
- measure the one or more reference signals to select an antenna panel and a beam to receive data on the PSCell;
- receive, at the antenna panel, the data on the beam after the random access procedure is completed;
- determine that the UE has not received a downlink transmission assignment on the PSCell within a predetermined time period;
- determine a RSRP threshold that is a previous RSRP in response to which a base station transmitted a downlink transmission assignment on the PSCell to the UE;
- determine that a measured RSRP is greater or equal to the RSRP threshold;
- generate a boosted RSRP that is greater the measured RSRP;
- and
- send the boosted RSRP to the base station.
Dependencies are inferred from the claim text.