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EP-4742823-A2 - METHOD AND APPARATUS FOR ENHANCED DISCONTINUOUS RECEPTION CONFIGURATION IN MOBILE COMMUNICATIONS

EP4742823A2EP 4742823 A2EP4742823 A2EP 4742823A2EP-4742823-A2

Abstract

Various solutions for enhanced discontinuous reception (DRX) configuration/operation for extended reality (XR) and cloud gaming traffic with respect to user equipment and network apparatus in mobile communications are proposed. An apparatus may receive a configuration from a network node. The apparatus may activate an on-duration timer for an on-duration of a DRX cycle. The apparatus may determine whether downlink (DL) data are received from the network node. The apparatus may stop the on-duration timer according to the configuration in an event that the DL data are received.

Inventors

  • KUNT, Mehmet
  • SALAH, ABDELLATIF
  • JOSE, PRADEEP

Assignees

  • MediaTek Singapore Pte. Ltd.

Dates

Publication Date
20260513
Application Date
20221124

Claims (6)

  1. A method, comprising: receiving, by a processor of an apparatus, a configuration from a network node, wherein the configuration comprises an indication to enable an early stop of an on-duration timer; activating, by the processor, an on-duration timer for an on-duration of a discontinuous reception (DRX) cycle; determining, by the processor, whether downlink (DL) data are received from the network node; stopping, by the processor, the on-duration timer before an end of the on-duration according to the configuration in an event that the DL data are received; and activating, by the processor, an inactivity timer to monitor a physical downlink control channel (PDCCH) for a next data packet.
  2. The method of claim 1, further comprising: receiving, by the processor, at least one of a radio resource control (RRC) configuration, downlink control information (DCI) and a downlink (DL) MAC media access control (MAC) control element (MAC CE); and obtaining, by the processor, the configuration from at least one of the RRC configuration, the DCI and the DL MAC CE.
  3. The method of claim 1, further comprising: stopping, by the processor, DL data monitoring and transitioning into an off-duration before the end of the on-duration in an event that the inactivity timer is expired.
  4. An apparatus, comprising: a transceiver which, during operation, wirelessly communicates; and a processor communicatively coupled to the transceiver such that, during operation, the processor performs operations comprising: receiving, via the transceiver, a configuration from a network node, wherein the configuration comprises an indication to enable an early stop of an on-duration timer; activating an on-duration timer for an on-duration of a discontinuous reception (DRX) cycle; determining whether downlink (DL) data are received from the network node; stopping the on-duration timer before an end of the on-duration according to the configuration in an event that the DL data are received; and activating an inactivity timer to monitor a physical downlink control channel (PDCCH) for a next data packet.
  5. The apparatus of claim 4, wherein the processor further performs operations comprising: receiving, via the transceiver, at least one of a radio resource control (RRC) configuration, downlink control information (DCI) and a downlink (DL) MAC media access control (MAC) control element (MAC CE); and obtaining the configuration from at least one of the RRC configuration, the DCI and the DL MAC CE.
  6. The apparatus of claim 4, wherein the processor further performs operations comprising: stopping DL data monitoring and transitioning into an off-duration before the end of the on-duration in an event that the inactivity timer is expired.

Description

CROSS REFERENCE TO RELATED PATENT APPLICATION(S) The present disclosure is part of a non-provisional application claiming the priority benefit of U.S. Provisional Patent Application No. US 63/283,243, filed 25 November 2021, the content of which being incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure is generally related to mobile communications and, more particularly, to enhanced discontinuous reception (DRX) configuration/operation for extended reality (XR) and cloud gaming traffic with respect to user equipment and network apparatus in mobile communications. BACKGROUND Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section. In current New Radio (NR) framework, 3rd Generation Partnership Project (3GPP) Release 15 (Rel-15) and Release 16 (Rel-16) specified connected mode discontinuous reception (cDRX) operation which allows for UE power saving by switching off the UE transmit (Tx)/receive (Rx) chains when there is no data to be received from the base station or to be transmitted by the UE. The UE can be configured a DRX cycle comprising an on-duration and an off-duration with a periodicity. The UE may wake up within the on-duration for data reception/transmission and go to sleep within the off-duration for power saving. One of the limitations/challenges of the Rel-15/Rel-16 cDRX design when applied to the XR/cloud gaming traffic is that the existing cDRX periodicities do not align with the augmented reality (AR)/virtual reality (VR) periodicities. The data burst of AR/VR traffic could be mismatched with the on-duration of DRX cycle. In addition, the AR/VR traffic modelling introduced a jitter which means that the traffic is not exactly periodic, but the arrival could be random within a specific jitter interval (e.g., [-4, +4] millisecond (ms) for downlink (DL) AR/VR). Some data may come early, and some data may be delayed. One straightforward but costly solution is to force the UE to wake up more frequently, but then the power consumption gain is compromised. The UE may waste power due to the uncertainties. The power performance and user experience will become bad. Accordingly, how to improve the DRX operations for adapting to audio/video streams for XR and/or cloud gaming traffic becomes an important issue for UE power saving in the newly developed wireless communication network. Therefore, there is a need to provide proper schemes to perform DRX operations for XR and/or cloud gaming applications. SUMMARY The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter. An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issues pertaining to enhanced DRX configuration/operation for XR and cloud gaming traffic with respect to user equipment and network apparatus in mobile communications. In one aspect, a method may involve an apparatus receiving a configuration from a network node. The method may also involve the apparatus activating an on-duration timer for an on-duration of a DRX cycle. The method may further involve the apparatus determining whether DL data are received from the network node. The method may further involve the apparatus stopping the on-duration timer according to the configuration in an event that the DL data are received. In one aspect, a method may involve an apparatus receiving at least one DRX configuration configuring an on-duration bundle pattern from a network node. The method may also involve the apparatus enabling the on-duration bundle pattern according to an indication from the network node. The method may further involve the apparatus monitoring a physical downlink control channel (PDCCH) transmitted from a network node according to the on-duration bundle pattern. In one aspect, a method may involve an apparatus receiving a plurality of DRX configurations. The method may also involve the apparatus receiving an indication indicating at least one of the DRX configurations. The method may further involve the apparatus activating the at least one of the DRX configurations according to the indication. The method may further involve the apparatus monitoring a physical downlink control channel (PDCCH) transmitted from a network node according to at least one activated DRX configuration. In one aspect, a method may involve an apparatus measuring at least one of a latency and a jitter of a data packet. The method may also involve th