Short latency fast retransmission triggering
AssigneeWacom Co., Ltd.
InventorsAlexander Golitschek Edler von Elbwart, Ayako Horiuchi, Lilei Wang
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Abstract
The invention relates to an improved transmission protocol for uplink data packet transmission in a communication system. A receiver of a user equipment receives a Fast Retransmission Indicator, referred to as FRI. The FRI indicates whether or not a base station requests a retransmission of a previously transmitted data packet. A transmitter of the user equipment retransmits the data packet using the same redundancy version as already used for the previous transmission of the data packet.
Claims14
A user equipment operating a transmission protocol for uplink transmission of a data packet in a communication system, the user equipment comprising:
- a receiver operative to receive downlink feedback information (DFI), wherein the DFI indicates that a base station requests a retransmission of an initial transmission data packet, wherein configured uplink grant transmission parameters are used for the initial transmission data packet and the retransmission without dynamic grant, wherein the retransmission of the data packet is triggered by a Downlink Control Information (DCI);
- and
- a transmitter operative to retransmit the data packet.
A method for operating a transmission protocol in a user equipment for uplink transmission of a data packet in a communication system, the method comprising:
- receiving downlink feedback information (DFI), wherein the DFI indicates that a base station requests a retransmission of an initial transmission data packet, wherein configured uplink grant transmission parameters are used for the initial transmission data packet and the retransmission, wherein the retransmission of the data packet is triggered by a Downlink Control Information (DCI);
- and
- retransmitting the data packet.
Dependencies are inferred from the claim text.