US-12621897-B2 - User equipments, base stations and signaling for downlink semi-persistent scheduling of non-terrestrial networks

US12621897B2US 12621897 B2US12621897 B2US 12621897B2US-12621897-B2

Abstract

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive signaling that includes a configuration for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) in a non-terrestrial network (NTN). The receiving circuitry is also configured to receive signaling that comprises first information to indicate whether HARQ feedback is disabled for the SPS PDSCH. The receiving circuitry is further configured to receive signaling that comprises second information to indicate a timing offset for the SPS PDSCH and/or corresponding HARQ feedback. The receiving circuitry is additionally configured to receive the SPS PDSCH based on the configuration and/or the second information. The UE also includes transmitting circuitry configured to transmit the HARQ feedback based on the configuration and the first information and the second information. The UE further includes a processor configured to flush a data buffer of the SPS PDSCH based on the first information.

Inventors

Kai Ying
Zhanping Yin

Assignees

SHARP KABUSHIKI KAISHA

Dates

Publication Date: 20260505
Application Date: 20220324

Claims (3)

1 . A user equipment (UE) that communicates with a base station apparatus, the UE comprising: receiving circuitry configured to: receive a first radio resource control (RRC) message comprising first information used for configuring a number of hybrid automatic repeat request (HARQ) processes per cell the UE assumes, wherein a maximum number of the HARQ processes configurable by the first information is 32; receive RRC signaling used for configuring enabling or disabling HARQ feedback per HARQ process; receive a second RRC message comprising second information used for configuring a number of HARQ processes for a semi-persistent scheduling, wherein a maximum number of the HARQ processes configurable by the second information is 32; and receive a third RRC message comprising third information, wherein the third information indicates whether HARQ feedback is enabled for the semi-persistent scheduling, regardless of whether the RRC signaling has configured enabling or disabling the HARQ feedback of a corresponding HARQ process.
2 . A base station apparatus that communicates with a user equipment (UE), the base station apparatus comprising: transmitting circuitry configured to: transmit a first radio resource control (RRC) message comprising first information used for configuring a number of hybrid automatic repeat request (HARQ) processes per cell the UE assumes, wherein a maximum number of the HARQ processes configurable by the first information is 32; transmit RRC signaling used for configuring enabling or disabling HARQ feedback per HARQ process; transmit a second RRC message comprising second information used for configuring a number of HARQ processes for a semi-persistent scheduling, wherein a maximum number of the HARQ processes configurable by the second information is 32; and transmit a third RRC message comprising third information, wherein the third information indicates whether HARQ feedback is enabled for the semi-persistent scheduling, regardless of whether the RRC signaling has configured enabling or disabling the HARQ feedback of a corresponding HARQ process.
3 . A method performed by a user equipment (UE), the method comprising: receiving a first radio resource control (RRC) message comprising first information used for configuring a number of hybrid automatic repeat request (HARQ) processes per cell the UE assumes, wherein a maximum number of the HARQ processes configurable by the first information is 32; receiving RRC signaling used for configuring enabling or disabling HARQ feedback per HARQ process; receiving a second RRC message comprising second information used for configuring a number of HARQ processes for a semi-persistent scheduling, wherein a maximum number of the HARQ processes configurable by the second information is 32; and receiving a third RRC message comprising third information, wherein the third information indicates whether HARQ feedback is enabled for the semi-persistent scheduling, regardless of whether the RRC signaling has configured enabling or disabling the HARQ feedback of a corresponding HARQ process.

Description

TECHNICAL FIELD The present disclosure relates generally to communication systems. More specifically, the present disclosure relates to user equipments, base stations and signaling for scheduling of non-terrestrial networks (NTNs). BACKGROUND ART Wireless communication devices have become smaller and more powerful in order to meet consumer needs and to improve portability and convenience. Consumers have become dependent upon wireless communication devices and have come to expect reliable service, expanded areas of coverage and increased functionality. A wireless communication system may provide communication for a number of wireless communication devices, each of which may be serviced by a base station. A base station may be a device that communicates with wireless communication devices. As wireless communication devices have advanced, improvements in communication capacity, speed, flexibility and/or efficiency have been sought. However, improving communication capacity, speed, flexibility, and/or efficiency may present certain problems. For example, wireless communication devices may communicate with one or more devices using a communication structure. However, the communication structure used may only offer limited flexibility and/or efficiency. As illustrated by this discussion, systems and methods that improve communication flexibility and/or efficiency may be beneficial. SUMMARY OF INVENTION In one example, a user equipment (UE), comprising: receiving circuitry configured to receive signaling that comprises a configuration for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) in a non-terrestrial network (NTN); the receiving circuitry configured to receive signaling that comprises first information to indicate whether Hybrid Automatic Repeat Request (HARQ) feedback is disabled for the SPS PDSCH; the receiving circuitry configured to receive signaling that comprises second information to indicate a timing offset for the SPS PDSCH and/or corresponding HARQ feedback; the receiving circuitry configured to receive the SPS PDSCH based on the configuration and/or the second information; transmitting circuitry configured to transmit the HARQ feedback based on the configuration and the first information and the second information; and a processor configured to flush a data buffer of the SPS PDSCH based on the first information. In one example, a base station (gNB), comprising: transmitting circuitry configured to transmit signaling that comprises a configuration for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) in a non-terrestrial network (NTN); the transmitting circuitry configured to transmit signaling that comprises first information to indicate whether Hybrid Automatic Repeat Request (HARQ) feedback is disabled for the SPS PDSCH; the transmitting circuitry configured to transmit signaling that comprises second information to indicate a timing offset for the SPS PDSCH and/or corresponding HARQ feedback; the transmitting circuitry configured to transmit the SPS PDSCH based on the configuration and/or the second information; receiving circuitry configured to receive the HARQ feedback based on the configuration and the first information and the second information; and a processor configured to flush a data buffer of the SPS PDSCH based on the first information. In one example, a method by a user equipment (UE), comprising: receiving signaling that comprises a configuration for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) in a non-terrestrial network (NTN); receiving signaling that comprises first information to indicate whether Hybrid Automatic Repeat Request (HARQ) feedback is disabled for the SPS PDSCH; receiving signaling that comprises second information to indicate a timing offset for the SPS PDSCH and/or corresponding HARQ feedback; receiving the SPS PDSCH based on the configuration and/or the second information; transmitting the HARQ feedback based on the configuration and the first information and the second information; and flushing a data buffer of the SPS PDSCH based on the first information. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram illustrating one implementation of one or more base stations (gNBs) and one or more user equipments (UEs) for scheduling of non-terrestrial networks (NTNs). FIG. 2 is a diagram illustrating an example of a resource grid for the downlink. FIG. 3 is a diagram illustrating one example of a resource grid for the uplink. FIG. 4 shows examples of several numerologies. FIG. 5 shows examples of subframe structures for the numerologies that are shown in FIG. 4. FIG. 6 shows examples of slots and sub-slots. FIG. 7 shows examples of scheduling timelines. FIG. 8 shows examples of DL control channel monitoring regions. FIG. 9 shows examples of DL control channel which includes more than one control channel elements. FIG. 10 shows examples of UL control channel structures. FIG. 11 is