Harq signaling for grant-free uplink transmissions
AssigneeHuawei Technologies Co., Ltd.
InventorsYU CAO, LIQING ZHANG, JIANGLEI MA
Life of this patent
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Abstract
In a wireless communication system, a grant-free uplink transmission is an uplink transmission sent from a user equipment (UE) to a base station that does not need a dynamic and explicit scheduling grant from the base station. Systems and methods are disclosed for performing hybrid automatic repeat request (HARQ) for grant-free uplink transmissions. Signaling relating to the ACK/NACK for the HARQ, as well as signaling relating to configuring the UE for grant-free uplink transmission, is also disclosed.
Claims30
A method performed by a base station comprising:
- receiving a first grant-free uplink transmission from a first user equipment (UE);
- receiving a second grant-free uplink transmission from a second UE;
- transmitting, to the first UE and to the second UE, a group ACK/NACK message indicating an ACK or a NACK corresponding to the first grant-free uplink transmission and an ACK or a NACK corresponding to the second grant-free uplink transmission.
A base station comprising:
- a receiver to receive a first grant-free uplink transmission from a first user equipment (UE), and to receive a second grant-free uplink transmission from a second UE;
- a grant-free transmission module to generate a group ACK/NACK message that indicates an ACK or a NACK corresponding to the first grant-free uplink transmission and an ACK or a NACK corresponding to the second grant-free uplink transmission.
A method performed by a first user equipment (UE) comprising:
- transmitting a first grant-free uplink transmission to a base station;
- receiving a group ACK/NACK message indicating an ACK or a NACK corresponding to the first grant-free uplink transmission and an ACK or a NACK corresponding to a second grant-free uplink transmission from a second UE.
A first user equipment (UE) comprising:
- a transmitter to transmit a first grant-free uplink transmission to a base station;
- a receiver to receive a group ACK/NACK message that indicates an ACK or a NACK corresponding to the first grant-free uplink transmission and an ACK or a NACK corresponding to a second grant-free uplink transmission from a second UE.
Dependencies are inferred from the claim text.