US 2023/0058734 A1Published application

Method performed by user equipment, and user equipment

AssigneeSharp Kabushiki Kaisha

InventorsFANGYING XIAO, RENMAO LIU, SHOHEI YAMADA

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Abstract

The present disclosure provides a method performed by user equipment, and user equipment. The method performed by user equipment includes: if a medium access control (MAC) entity is configured with a configured uplink grant and if the configured uplink grant is activated, then determining whether the MAC entity is configured to use the configured uplink grant to transmit a MAC PDU, namely a MAC protocol data unit, obtained for a de-prioritized configured uplink grant; and if the MAC entity is configured to use the configured uplink grant to transmit the MAC PDU, then delivering the configured uplink grant to a hybrid automatic repeat request (HARQ) entity. In this way, the problem involving transmission of a de-prioritized MAC PDU stored in a HARQ process buffer can be solved, thereby improving the communication efficiency and reliability of a wireless communication system.

A method performed by user equipment (UE), the method comprising:

considering an uplink grant addressed to C-RNTI or CS-RNTI, which is one of uplink grants whose respective PUSCH durations overlap with each other, as a prioritized uplink grant and the other overlapping uplink grant(s) as a de-prioritized uplink grant(s), in a case that (i) there is no overlapping PUSCH duration of a configured uplink grant whose priority is higher than a priority of the uplink grant addressed to C-RNTI or CS-RNTI, and (ii) there is no overlapping PUCCH resource with an SR transmission where a priority of a logical channel that triggered the SR transmission is higher than the priority of the uplink grant addressed to C-RNTI or CS-RNTI,
considering a configured uplink grant, which is one of uplink grants whose respective PUSCH durations overlap with each other, as a prioritized uplink grant and the other overlapping uplink grant(s) as a de-prioritized uplink grant(s), in a case that (a) there is no overlapping PUSCH duration of another configured uplink grant whose priority is higher than a priority of the configured uplink grant, (b) there is no overlapping PUSCH duration of an uplink grant addressed to C-RNTI or CS-RNTI whose priority is higher than or equal to the priority of the configured uplink grant, and (c) there is no overlapping PUCCH resource with an SR transmission where the priority of the logical channel that triggered the SR transmission is higher than the priority of the configured uplink grant;
stopping a configuredGrantTimer for a corresponding HARQ process of a configured uplink grant, in a case that an autonomousReTx information element is configured and the configured uplink grant is one of the de-prioritized uplink grant(s), and
if the autonomousReTx information element is configured, transmitting, with use of a prioritized uplink grant, a MAC PDU that has already been obtained for a HARQ process but has not been transmitted completely, after a previous configuration uplink grant associated with the HARQ process is deprioritized.

1 more element

Facts

Application

17/790,703Filed 6 Jan 2021

Priority

CN 202010016738.27 Jan 2020

Published

23 Feb 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04W 72/1268
Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows: of uplink data flows
H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04L 1/1812
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
H04L 1/1822
Automatic repetition systems, e.g. Van Duuren systems: involving configuration of automatic repeat request [ARQ] with parallel processes

Abstract

Claims2