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US 12,192,147 B2Granted
Method of uplink acknowledgment for downlink data received on an unlicensed band in a radio access network
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorHao Lin
Life of this patent
Estimating the term…
Abstract
Upon receiving a first DCI that does not contain explicit indication about a group identifier and/or a new feedback indicator, the UE determines whether group-based acknowledgement feedback is active. If so, the allocates the first DCI to a default group. The UE determines whether to toggle a new feedback indicator value for the default group based on a comparison of field values in the first DCI and those in the default group. The UE then transmits on an uplink channel acknowledgement feedback of the first group to the base station for the downlink data according on the new feedback indicator.
Claims15
A method of acknowledgement on an uplink channel, from a user equipment to a base station, for downlink data received on a downlink channel of an unlicensed band in a radio access network, comprising:
- receiving, by the user equipment, a first downlink control information element (FB-DCI1) that does not contain explicit indication about a group identifier and/or does not contain explicit indication about a new feedback indicator;
- determining, by the user equipment, whether a group-based acknowledgement feedback is active,
- wherein if the group-based acknowledgement feedback is determined to be active, allocating, by the user equipment, the first downlink control information element to a first group (G0);
- determining, by the user equipment, a slot in which the user equipment shall report the group-based acknowledgement feedback of the first group based on an information field (K1) of the first downlink control information element;
- determining, by the user equipment, an accumulated number of transmissions in the first group based on a value of a second information field (C-DAI) in the first downlink control information element;
- determining, by the user equipment, an updated new feedback indicator for the first group based on an existing new feedback indicator (NFI) for the first group and a first condition,
- wherein:
- if the first condition is determined to be satisfied, the updated new feedback indicator for the first group is determined by toggling the existing new feedback indicator;
- if the first condition is determined to be not satisfied, the updated new feedback indicator for the first group is determined to be the existing new feedback indicator;
- and
- transmitting on an uplink channel (PUCCH), by the user equipment, the group-based acknowledgement feedback of the first group to the base station based on the updated new feedback indicator.
8 more elements
A user equipment, comprising:
- a processor configured to control an input interface to receive a first downlink control information element (FB-DCI1) that does not contain explicit indication about a group identifier and/or does not contain explicit indication about a new feedback indicator;
- determine, whether a group-based acknowledgement feedback is active,
- wherein if the group-based acknowledgement feedback is determined to be active:
- allocate the first downlink control information element to a first group (G0);
- determine a slot in which the user equipment shall report the group-based acknowledgement feedback of the first group based on an information field (K1) of the first downlink control information element;
- determine an accumulated number of transmissions in the first group based on a value of a second information field (C-DAI) in the first downlink control information element:
- determine an updated new feedback indicator for the first group based on an existing new feedback indicator (NFI) for the first group and a first condition,
- wherein:
- if the first condition is determined to be satisfied, the updated new feedback indicator for the first group is determined by toggling the existing new feedback indicator;
- if the first condition is determined to be not satisfied, the updated new feedback indicator for the first group is determined to be the existing new feedback indicator, and
- control an output interface to transmit on an uplink channel (PUCCH), by the user equipment, the group-based acknowledgement feedback of the first group to the base station based on the updated new feedback indicator.
8 more elements
A non-transitory computer readable medium comprising program instructions for causing a user equipment to perform the following steps:
- receiving, by the user equipment, a first downlink control information element (FB-DCI1) that does not contain explicit indication about a group identifier and/or does not contain explicit indication about a new feedback indicator;
- determining, by the user equipment, whether a group-based acknowledgement feedback is active,
- wherein if the group-based acknowledgement feedback is determined to be active:
- allocating, by the user equipment, the first downlink control information element to a first group (G0);
- determining, by the user equipment, a slot in which the user equipment shall report the group-based acknowledgement feedback of the first group based on an information field (K1) of the first downlink control information element;
- determining, by the user equipment, an accumulated number of transmissions in the first group based on a value of a second information field (C-DAI) in the first downlink control information element;
- determining, by the user equipment, an updated new feedback indicator for the first group based on an existing new feedback indicator (NFI) for the first group and a first condition,
- wherein:
- if the first condition is determined to be satisfied, the updated new feedback indicator for the first group is determined by toggling the existing new feedback indicator
- if the first condition is determined to be not satisfied, the updated new feedback indicator for the first group is determined to be the existing new feedback indicator;
- and
- transmitting on an uplink channel (PUCCH), by the user equipment, the group-based acknowledgement feedback of the first group to the base station based on the updated new feedback indicator.
9 more elements
Dependencies are inferred from the claim text.