Systems and methods for uplink transmission power control
AssigneeApple Inc.
InventorsYushu Zhang, RongZhen Yang, Yuan Zhu, Gang Xiong, Wenting Chang, Guotong Wang, Dae Won Lee, Yongjun Kwak
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Abstract
Uplink Transmission Power Control (TPC) techniques configured to compensate for variations in path loss and/or interference on a plurality of uplink transmission beams.
Claims11
An apparatus of a user equipment (UE) operable to configure uplink transmission power in a multi-beam system, the UE comprising:
- one or more processors configured to:
- decode, at the UE, higher level signaling received from a base station including one or more power control factors for corresponding ones of a plurality of uplink transmission beams, at least one of the one or more power control factors comprising a resource block power (P0) for each of the plurality of uplink transmission beams, the resource block power (P0) being associated with a resource block comprising a physical channel mapped to a smallest time-frequency unit within a resource grid, the resource block power (P0) comprising a function of one or more of an interference, a thermal noise and a target signal interference noise ratio for each of the plurality of uplink transmission beams;
- estimate, at the UE, a path loss for corresponding ones of the plurality of uplink transmission beams;
- and
- determine, at the UE, a transmission power of one or more of the plurality of uplink transmission beams as a function of the one or more decoded power control factors and the estimated path loss of the corresponding ones of the plurality of uplink transmission beams;
- and
- a memory interface configured to send to a memory one or more indicators of the determined transmission power of the corresponding ones of the plurality of uplink transmission beams.
At least one non-transitory machine readable storage medium having instructions embodied thereon for a user equipment (UE) configured for uplink transmission power in a multi-beam system, the instructions when executed by one or more processors at the UE perform the following:
- decoding, at the UE, higher level signaling received from a base station including one or more power control factors for corresponding ones of a plurality of uplink transmission beams, at least one of the one or more power control factors comprising a resource block power (P0) for each of the plurality of uplink transmission beams, the resource block power (P0) being associated with a resource block comprising a physical channel mapped to a smallest time-frequency unit within a resource grid, the resource block power (P0) comprising a function of one or more of an interference, a thermal noise and a target signal interference noise ratio for each of the plurality of uplink transmission beams;
- estimating, at the UE, a path loss for corresponding ones of the plurality of uplink transmission beams;
- and
- determining, at the UE, a transmission power of one or more of the plurality of uplink transmission beams as a function of the one or more decoded power control factors and the estimated path loss of the corresponding ones of the plurality of uplink transmission beams.
Dependencies are inferred from the claim text.