US 11,109,285 B2 · Multi-PCell design for URLLC reliability

Abstract

Aspects of the present disclosure provide a mechanism for improving reliability in a wireless communication network supporting a multi-cell transmission environment including a primary cell (PCell) and one or more secondary cells (SCells). In some examples, a user equipment (UE) in a connected mode with a PCell for multi-cell communication with the PCell and one or more SCells may utilize link quality measurements on both the PCell and one or more SCells to manage the connection with the PCell. In other examples, one or more SCells may function as a PCell to transmit common control signaling to the UE and/or receive uplink control information from the UE. In other examples, a UE in an idle mode may evaluate the reference signals transmitted from the PCell and one or more potential SCells before deciding whether to connect to the PCell for multi-cell communication.

Claims28

Dependent claims

A method for a user equipment to communicate in a wireless communication network comprising a primary cell (PCell) and a secondary cell (SCell), the method comprising:

receiving a first reference signal on a first carrier from the PCell prior to connecting to the PCell or the SCell;
receiving a second reference signal on a second carrier from the SCell prior to connecting to the PCell or the SCell;
connecting to the PCell for multi-cell communication with the PCell and the SCell based on a joint evaluation of both the first reference signal and the second reference signal;
and
after connecting to the PCell for multi-cell communication with the PCell and the SCell:
receiving a first measurement signal on the first carrier from the PCell,
receiving a second measurement signal on the second carrier from the SCell,
measuring a first signal parameter indicating a first quality of the first measurement signal,
measuring a second signal parameter indicating a second quality of the second measurement signal,
determining an overall signal parameter from the first signal parameter and the second signal parameter, and
utilizing the overall signal parameter to manage the connection with the PCell.

8 more elements

A scheduled entity in a wireless communication network comprising a primary cell (PCell) and a secondary cell (SCell), the scheduled entity comprising:

a transceiver for wireless communication with a scheduling entity;
a memory;
and
a processor communicatively coupled to the transceiver and the memory, the processor configured to:
receive a first reference signal on a first carrier from the PCell prior to connecting to the PCell or the SCell;
receive a second reference signal on a second carrier from the SCell prior to connecting to the PCell or the SCell;
connect to the PCell for multi-cell communication with the PCell and the SCell based on a joint evaluation of both the first reference signal and the second reference signal;
and
after connecting to the PCell for multi-cell communication with the PCell and the SCell:
receive a first measurement signal on the first carrier from the PCell via the transceiver;
receive a second measurement signal on the second carrier from the SCell via the transceiver;
measure a first signal parameter indicating a first quality of the first measurement signal;
measure a second signal parameter indicating a second quality of the second measurement signal;
determine an overall signal parameter from the first signal parameter and the second signal parameter;
and
utilize the overall signal parameter to manage the connection with the PCell and the SCell.

13 more elements

Dependencies are inferred from the claim text.

Multi-PCell design for URLLC reliability

Life of this patent

Multi-PCell design for URLLC reliability

Life of this patent

Abstract

Claims28