EP-4742572-A1 - UPLINK REPETITIONS WITHIN OCC PERIOD

Abstract

The present disclosure relates to devices, methods and computer readable storage medium for conditional dropping of uplink repetitions within an Orthogonal Cover Code (OCC) period. In a method, a terminal device receives, from a network apparatus, configuration information about an event associated with an operation of the terminal device. The event influences on maintaining at least one of phase continuity or power consistency within an OCC period. Then, the terminal device determines a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event.

Inventors

• MARCONE, Alessio
• FREDERIKSEN, FRANK
• WU, Yuan Xing
• AZARI, Mahdi

Assignees

• Nokia Technologies Oy

Dates

Publication Date

20260513

Application Date

20251013

Claims (16)

1. A terminal device comprising: means for receiving, from a network apparatus, configuration information about an event associated with an operation of the terminal device, wherein the event influences on maintaining at least one of phase continuity or power consistency within an Orthogonal Cover Code, OCC, period; and means for determining a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event.
2. The terminal device of claim 1, wherein the terminal device further comprises: means for determining a time offset from a start of the OCC period, wherein the time offset is predefined or preconfigured; and means for determining the transmission method for the uplink repetitions based on the reception time and the time offset.
3. The terminal device of claim 2, wherein the terminal device further comprises means for : in accordance with a determination that the reception time is earlier than the time offset, determining to drop the uplink repetitions within the OCC period.
4. The terminal device of claim 3, wherein the terminal device further comprises : means for carring out the operation associated with the event based on the configuration information.
5. The terminal device of claim 3, wherein the event indicates uplink control information is to be transmitted in at least one slot of the OCC period, and the terminal device is caused to: transmit, to the network apparatus, the uplink control information in at least one slot of the OCC period.
6. The terminal device of claim 2, wherein the terminal device further comprises means for : in accordance with a determination that the reception time is later than the time offset, determining to transmit the uplink repetitions; and carrying out at least one of: the operation associated with the event regardless of the transmission of the uplink repetitions within the OCC period, ignoring the event, or delaying the operation associated with the event to take place after an end of the OCC period.
7. The terminal device of any of claims 2 to 6, wherein the time offset is defined in units of orthogonal frequency division multiplexing, OFDM, symbols, slots or milliseconds.
8. The terminal device of claim 1, wherein the terminal device further comprises means for : determining the occurrence time of the event based on the configuration information; and in accordance with a determination that the occurrence time of the event is earlier than a start of at least one uplink repetition in the uplink repetitions within the OCC period, determining to drop the at least one uplink repetition.
9. The terminal device of any of claims 1 to 8, wherein the configuration information about the event is comprised in a radio resource control, RRC, configuration or a scheduling configuration.
10. The terminal device of any of claims 1 to 9, wherein the OCC period comprises a plurality of slots, and wherein the event occurs in one of the plurality of slots in the OCC period.
11. The terminal device of any of claims 1 to 10, wherein the event indicates at least one of: uplink control information is to be transmitted in one of slots in the OCC period, hybrid automatic repeat request, HARQ, feedback is to be carried out in one of slots in the OCC period, a dropping or cancellation of an uplink transmission, uplink timing adjustment in response to a timing advance command, or frequency hopping.
12. A method comprising: receiving, from a network apparatus, configuration information about an event associated with an operation of the terminal device, wherein the event influences on maintaining at least one of phase continuity or power consistency within an Orthogonal Cover Code, OCC, period; and determining a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event.
13. The method of claim 12, further comprising: determining a time offset from a start of the OCC period, wherein the time offset is predefined or preconfigured; and determining the transmission method for the uplink repetitions based on the reception time and the time offset.
14. The method of claim 12, further comprising: determining the occurrence time of the event based on the configuration information; and in accordance with a determination that the occurrence time of the event is earlier than a start of at least one uplink repetition in the uplink repetitions within the OCC period, determining to drop the at least one uplink repetition.
15. The method of any of claims 12 to 14, wherein the configuration information about the event is comprised in a radio resource control, RRC, configuration or a scheduling configuration.
16. The method of any of claims 12 to 15, wherein the event indicates at least one of: uplink control information is to be transmitted in one of slots in the OCC period, hybrid automatic repeat request, HARQ, feedback is to be carried out in one of slots in the OCC period, a dropping or cancellation of an uplink transmission, uplink timing adjustment in response to a timing advance command, or frequency hopping.

Description

FIELD Various example embodiments of the present disclosure generally relate to the field of telecommunication. BACKGROUND Uplink capacity enhancements for Non-Terrestrial Network (NTN) are being studied, which aims to enhance physical uplink shared channel (PUSCH) capacity through orthogonal cover codes, allowing multiple user equipment (UEs) to share the same time-frequency resources. In OCC-enabled uplink repetitions, e.g., PUSCH repetitions, it is essential that the code is applied consistently across data symbols, i.e., that all transmitted symbols across multiple slots remain identical in their properties. This avoids a loss of OCC orthogonality and introducing interference across UEs. The study of the uplink capacity enhancements may consider orthogonal cover codes across OFDM symbols, across slots, and/or within an orthogonal frequency division multiplexing (OFDM) symbol. SUMMARY In a first aspect of the present disclosure, there is provided a device. The device includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to: receive, from a network apparatus, configuration information about an event associated with an operation of the terminal device, wherein the event influences on maintaining phase continuity and/or power consistency within an OCC period; and determine a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event. In a second aspect of the present disclosure, there is provided a method. The method includes: receiving, from a network apparatus, configuration information about an event associated with an operation of the terminal device, wherein the event influences on maintaining phase continuity and/or power consistency within an OCC period; and determining a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event. In a third aspect of the present disclosure, there is provided a first apparatus. The first apparatus includes means for receiving, from a network apparatus, configuration information about an event associated with an operation of the terminal device, wherein the event influences on maintaining phase continuity and/or power consistency within an OCC period; and means for determining a transmission method for uplink repetitions within the OCC period and/or for the event based on a reception time of the configuration information or an occurrence time of the event. In a fourth aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium includes instructions stored thereon for causing an apparatus to carry out at least the method according to the second aspect. It is to be understood that the Summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description. BRIEF DESCRIPTION OF THE DRAWINGS Some example embodiments will now be described with reference to the accompanying drawings, where: FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure may be carried out;FIG. 2 illustrates a schematic diagram of an example of OCC of length 2;FIG. 3A illustrates a schematic diagram of an example of uplink repetitions;FIG. 3B illustrates a schematic diagram of an example of Redundancy Version (RV) cycling across PUSCH repetitions;FIG. 4 illustrates a schematic diagram of an example of locations of resources in an uplink channel;FIG. 5 illustrates a signaling chart for a process of conditional dropping of uplink repetitions according to some example embodiments of the present disclosure;FIG. 6A illustrates another signaling chart for a process of conditional dropping of uplink repetitions according to some example embodiments of the present disclosure;FIG. 6B illustrates still another signaling chart for a process of conditional dropping of uplink repetitions according to some example embodiments of the present disclosure;FIG. 7 illustrates a schematic diagram of an example of dropping uplink repetitions according to some example embodiments of the present disclosure;FIG. 8A illustrates a schematic diagram of an example of multiplexing uplink control information in an uplink repetition according to some example embodiments of the present disclosure;FIG. 8B illustrates a schematic diagram of an example of dropping uplink repetitions according to some example embodiments of the present disclosure;FIG. 9 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the pres