US-12628242-B2 - Cell DRX/DTX-aware periodic and semi-persistent configuration

Abstract

This disclosure provides methods, components, devices, and systems for enhancing communication efficiency and energy-saving in wireless networks by aligning periodic transmission occasions, including semi-persistently scheduled (SPS) periodic occasions, within cell Discontinuous Reception (DRX) and Discontinuous Transmission (DTX) cycles. Some aspects more specifically relate to user equipment (UE) obtaining a signal configuration from a network entity indicating periodicity and offset information for a signal or channel. In some examples, the periodicity and offset information is configured to align periodic transmission occasions of the signal or channel within an on duration of a cell DRX cycle or cell DTX cycle, beginning with respect to a reference time associated with the cell DRX cycle or cell DTX cycle. The UE may then efficiently communicate the signal or data in the channel with the network entity within the on duration according to the periodicity and offset information with reduced latency, improving network performance.

Inventors

• Ahmed Attia ABOTABL
• Diana Maamari
• Marwen Zorgui

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260512

Application Date

20230906

Claims (20)

1. 1 . An apparatus for wireless communication, comprising: one or more memories; and one or more processors each communicatively coupled with at least one of the one or more memories, the one or more processors, individually or in any combination, operable to cause the apparatus to: obtain, from a network entity, a signal configuration indicating periodicity and offset information for a signal or a channel, the periodicity and offset information configured to align periodic transmission occasions of the signal or the channel within an on duration of a cell Discontinuous Reception (DRX) cycle or a cell Discontinuous Transmission (DTX) cycle beginning with respect to a reference time associated with the cell DRX cycle or the cell DTX cycle; and communicate the signal or data in the channel with the network entity within the on duration according to the periodicity and offset information.
2. 2 . The apparatus of claim 1 , wherein the reference time is a start time of the on duration, or an offset time from the start time.
3. 3 . The apparatus of claim 1 , wherein the periodicity and offset information includes a time offset for the signal or the channel, and the signal or the data in the channel is communicated within the on duration beginning at the time offset with respect to the reference time.
4. 4 . The apparatus of claim 1 , wherein the periodicity and offset information includes a value of a periodicity of the signal or the channel, and the signal or the data in the channel is communicated within the on duration according to the periodicity.
5. 5 . The apparatus of claim 1 , wherein the periodic transmission occasions include all valid occasions for the signal or the channel within the cell DRX cycle or the cell DTX cycle beginning at a time offset with respect to the reference time, the periodicity and offset information including the time offset.
6. 6 . The apparatus of claim 1 , wherein the periodic transmission occasions include consecutive valid occasions for the signal or the channel beginning at a time offset with respect to the reference time and occurring a specified number of times according to a periodicity, the periodicity and offset information including the time offset and a value of the periodicity.
7. 7 . The apparatus of claim 6 , wherein the specified number of times of the consecutive valid occasions is configured in a radio resource control (RRC) configuration, a medium access control (MAC) control element (MAC-CE), or downlink control information (DCI).
8. 8 . The apparatus of claim 1 , wherein the signal configuration is a semi-persistent configuration including a time offset, a value of a periodicity, and a quantity of the periodic transmission occasions for the signal or the channel, the signal or the data in the channel being communicated within the on duration according to the periodicity following activation of the periodic transmission occasions and beginning at the time offset with respect to the reference time over the quantity of the periodic transmission occasions.
9. 9 . The apparatus of claim 1 , wherein the periodicity and offset information includes a time offset and a value of a periodicity, and the one or more processors, individually or in any combination, are further operable to cause the apparatus to: obtain, during the on duration, an activation signal for the signal or the channel after the time offset, wherein in response to the activation signal being obtained after the time offset, the signal or the data in the channel is communicated during the on duration beginning at a next available transmission occasion following the time offset according to the periodicity.
10. 10 . The apparatus of claim 1 , wherein the signal is a periodic signal or a semi-persistently scheduled (SPS) signal.
11. 11 . The apparatus of claim 1 , wherein the signal or the channel includes: a channel state information (CSI) reference signal (CSI-RS), a positioning reference signal (PRS), a physical downlink control channel (PDCCH), a semi-persistently scheduled (SPS) physical downlink shared channel (PDSCH), a scheduling request (SR), a CSI report, a sounding reference signal (SRS), or a physical uplink shared channel (PUSCH).
12. 12 . A method of wireless communication performable at a user equipment (UE), comprising: obtaining, from a network entity, a signal configuration indicating periodicity and offset information for a signal or a channel, the periodicity and offset information configured to align periodic transmission occasions of the signal or the channel within an on duration of a cell Discontinuous Reception (DRX) cycle or a cell Discontinuous Transmission (DTX) cycle beginning with respect to a reference time associated with the cell DRX cycle or the cell DTX cycle; and communicating the signal or data in the channel with the network entity within the on duration according to the periodicity and offset information.
13. 13 . The method of claim 12 , wherein the periodicity and offset information includes a time offset and a value of a periodicity for the signal or the channel, and the signal or the data in the channel is communicated within the on duration beginning at the time offset with respect to the reference time and according to the periodicity.
14. 14 . The method of claim 12 , wherein the periodic transmission occasions include all valid occasions for the signal or the channel within the cell DRX cycle or the cell DTX cycle beginning at a time offset with respect to the reference time, the periodicity and offset information including the time offset.
15. 15 . The method of claim 12 , wherein the periodic transmission occasions include consecutive valid occasions for the signal or the channel beginning at a time offset with respect to the reference time and occurring a specified number of times according to a periodicity, the periodicity and offset information including the time offset and a value of the periodicity.
16. 16 . The method of claim 12 , wherein the signal configuration is a semi-persistent configuration including a time offset, a value of a periodicity, and a quantity of the periodic transmission occasions for the signal or the channel, the signal or the data in the channel being communicated within the on duration according to the periodicity following activation of the periodic transmission occasions and beginning at the time offset with respect to the reference time over the quantity of the periodic transmission occasions.
17. 17 . The method of claim 12 , wherein the periodicity and offset information includes a time offset and a value of a periodicity, and the method further comprises: obtaining, during the on duration, an activation signal for the signal or the channel after the time offset, wherein in response to the activation signal being obtained after the time offset, the signal or the data in the channel is communicated during the on duration beginning at a next available transmission occasion following the time offset according to the periodicity.
18. 18 . An apparatus for wireless communication, comprising: one or more memories; and one or more processors each communicatively coupled with at least one of the one or more memories, the one or more processors, individually or in any combination, operable to cause the apparatus to: send, to a user equipment (UE), a signal configuration indicating periodicity and offset information for a signal or a channel, the periodicity and offset information configured to align periodic transmission occasions of the signal or the channel within an on duration of a cell Discontinuous Reception (DRX) cycle or a cell Discontinuous Transmission (DTX) cycle beginning with respect to a reference time associated with the cell DRX cycle or the cell DTX cycle; and communicate the signal or data in the channel with the UE within the on duration according to the periodicity and offset information.
19. 19 . The apparatus of claim 18 , wherein the reference time is a start time of the on duration, or an offset time from the start time.
20. 20 . The apparatus of claim 18 , wherein the periodicity and offset information includes a time offset for the signal or the channel, and the signal or the data in the channel is communicated within the on duration beginning at the time offset with respect to the reference time.

Description

TECHNICAL FIELD The present disclosure relates to wireless communication, and more particularly, to techniques for aligning periodic transmission occasions of periodic and semi-persistent signals or channels within cell Discontinuous Reception (DRX) and Discontinuous Transmission (DTX) cycles to improve communication efficiency and energy-saving in wireless networks. DESCRIPTION OF THE RELATED TECHNOLOGY Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems. These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. SUMMARY The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. One innovative aspect of the subject matter described in this disclosure may be implemented in an apparatus for wireless communication, where the apparatus is a user equipment (UE). The apparatus includes one or more memories, and one or more processors each communicatively coupled with at least one of the one or more memories. The one or more processors, individually or in any combination, are operable to cause the apparatus to obtain, from a network entity, a signal configuration indicating periodicity and offset information for a signal or a channel. The periodicity and offset information is configured to align periodic transmission occasions of the signal or the channel within an on duration of a cell Discontinuous Reception (DRX) cycle or a cell Discontinuous Transmission (DTX) cycle, beginning with respect to a reference time associated with the cell DRX cycle or the cell DTX cycle. The apparatus communicates the signal or data in the channel with the network entity within the on duration according to the periodicity and offset information. Another innovative aspect of the subject matter described in this disclosure may be implemented in a method of wireless communication performable at a UE. The method includes obtaining, from a network entity, a signal configuration indicating periodicity and offset information for a signal or a channel. The periodicity and offset information is configured to align periodic transmission occasions of the signal or the channel within an on duration of a cell DRX cycle or a cell DTX cycle, beginning with respect to a reference time associated with the cell DRX cycle or the cell DTX cycle. The method also includes communicating the signal or data in the channel with the network entity within the on duration according to the periodicity and offset information. Another innovative aspect of the subject matter described in this disclosure may be implemented in an apparatus for wireless communication, where the apparatus is a network entity. The apparatus includes one or more memories, and one or more processors each communicatively coupled with at least one of the one or more memories. The one or more processors, individually or in any combination, are operable to cause the apparatus to send, to a UE, a signal configuration indicating periodicity and offset informatio