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EP-4740658-A1 - SYNCHRONIZED TRANSMISSION OF MULTI-MODAL TRAFFIC

EP4740658A1EP 4740658 A1EP4740658 A1EP 4740658A1EP-4740658-A1

Abstract

A user equipment (UE) configured to decode, from signaling received from a base station, an uplink (UL) grant comprising an indication of UL radio resources and a modality group, generate a data unit based on data from a plurality of traffic flows corresponding to the modality group, wherein the IP flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) and configure transceiver circuitry to transmit the data unit using the UL radio resources.

Inventors

  • KUO, PING-HENG
  • XU, FANGLI
  • HU, HAIJING
  • PALLE VENKATA, Naveen Kumar R
  • CHENG, PENG
  • ROSSBACH, Ralf
  • MANITHARA VAMANAN, SUDEEP
  • CHEN, YUQIN

Assignees

  • Apple Inc.

Dates

Publication Date
20260513
Application Date
20230807

Claims (20)

  1. An apparatus of a user equipment (UE) , the apparatus comprising processing circuitry configured to: decode, from signaling received from a base station, an uplink (UL) grant comprising an indication of UL radio resources and a modality group; generate a data unit based on data from a plurality of traffic flows corresponding to the modality group, wherein the IP flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) ; and configure transceiver circuitry to transmit the data unit using the UL radio resources.
  2. The apparatus of claim 1, wherein the UL grant comprises a dynamic grant, wherein the indication of the modality group comprises an explicit indication of the modality group in Downlink Control Information (DCI) related to the dynamic grant.
  3. The apparatus of claim 1, wherein the UL grant comprises a configured grant, wherein the indication of the modality group comprises an explicit indication of the modality group in a configuration information element (IE) related to the configured grant.
  4. The apparatus of claim 1, wherein the UL grant comprises a dynamic grant, wherein the indication of the modality group comprises an implicit indication of the modality group based on a parameter in Downlink Control Information (DCI) related to the dynamic grant.
  5. The apparatus of claim 1, wherein the UL grant comprises a configured grant, wherein the indication of the modality group comprises wherein the indication of the modality group comprises an implicit indication of the modality group based on a parameter in a configuration information element (IE) related to the configured grant.
  6. The apparatus of claim 1, wherein only data from the traffic flows corresponding to the modality group is included in the data unit.
  7. The apparatus of claim 1, wherein data from the traffic flows corresponding to the modality group is prioritized for inclusion in the data unit, wherein data from other traffic flows is included in the data unit when data from the traffic flows corresponding to the modality group does not fill the data unit.
  8. The apparatus of claim 1, wherein buffer delay information for each of the I P flows is used to generate the data unit.
  9. The apparatus of claim 1, wherein LCP settings for individual LCHs are ignored when the UL grant indicates a modality group.
  10. The apparatus of claim 1, wherein the processing circuitry is further configured to: decode, from signaling received from the base station, a second UL grant, wherein the second UL grant does not include an indication of a modality group, wherein the UE prioritizes the UL grant over the second UL grant for data unit generation.
  11. The apparatus of claim 1, wherein the processing circuitry is further configured to: decode, from signaling received from the base station, a second UL grant comprising an indication of a second modality group, wherein the UE prioritizes the UL grant or the second UL grant for data unit generation based on a priority level of the modality group and a second priority level of the second modality group.
  12. The apparatus of claim 1, wherein the processing circuitry is further configured to: decode, from signaling received from a core network, a message indicating the traffic flows corresponding to a multi-modal service identification, wherein the traffic flows corresponding to the multi-modal service identification are to be synchronized in uplink transmissions.
  13. The apparatus of claim 12, wherein the message further comprises a priority level associated with the multi-modal service identification.
  14. The apparatus of claim 1, wherein the processing circuitry is further configured to: decode, from signaling received from a base station, a message indicating the QoS flows, LCH or DRB corresponding to the modality group.
  15. The apparatus of claim 1, wherein the processing circuitry, to generate the data unit, is configured to: select data from one of the traffic flows of the modality group; and determine whether a condition related to another one of the traffic flows of the modality group is satisfied.
  16. The apparatus of claim 15, wherein, when the condition is not satisfied, the processing circuitry, to generate the data unit, is configured to: process the data from the one of the traffic flows to be included in the data unit.
  17. The apparatus of claim 15, wherein, when the condition is satisfied, the processing circuitry, to generate the data unit, is configured to: change a setting related to the one of the traffic flows; and process the data based on the changed setting of the one of the traffic flows.
  18. The apparatus of claim 17, wherein the setting comprises a logical channel (LCH) priority, a prioritized bit rate (PBR) , or a LCH mapping restriction.
  19. The apparatus of claim 17, wherein the data being processed based on the changed setting includes autonomous activation of duplication for the data, discard of buffered packets of the data before a discard timer is expired or a change in a timer value of the discard timer.
  20. An apparatus of a base station, the apparatus comprising processing circuitry configured to: configure transceiver circuitry to transmit an uplink (UL) grant comprising an indication of UL radio resources and a modality group to a user equipment (UE) , wherein the modality group comprises one or more traffic flows, wherein the traffic flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) ; and decode, from signals received from the UE on the UL radio resources, a data unit generated using data from traffic flows included in the modality group.

Description

Synchronized Transmission of Multi-Modal Traffic Technical Field This application relates generally to wireless communication systems, and in particular relates to synchronized transmission of multi-modal traffic. Background Cellular networks may support multi-modal communication services for various use cases including support of extended reality (XR) services. For example, an XR application should be able to obtain inputs from more than one source and/or output to more than one destination to convey information more effectively. Summary Some exemplary embodiments are related to an apparatus of a user equipment (UE) , the apparatus having processing circuitry configured to decode, from signaling received from a base station, an uplink (UL) grant comprising an indication of UL radio resources and a modality group, generate a data unit based on data from a plurality of traffic flows corresponding to the modality group, wherein the IP flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) and configure transceiver circuitry to transmit the data unit using the UL radio resources. Other exemplary embodiments are related to a processor configured to decode, from signaling received from a base station, an uplink (UL) grant comprising an indication of UL  radio resources and a modality group, generate a data unit based on data from a plurality of traffic flows corresponding to the modality group, wherein the IP flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) and configure transceiver circuitry to transmit the data unit using the UL radio resources. Still further exemplary embodiments are related to an apparatus of a base station, the apparatus having processing circuitry configured to configure transceiver circuitry to transmit an uplink (UL) grant comprising an indication of UL radio resources and a modality group to a user equipment (UE) , wherein the modality group comprises one or more traffic flows, wherein the traffic flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) and decode, from signals received from the UE on the UL radio resources, a data unit generated using data from traffic flows included in the modality group. Additional exemplary embodiments are related to a processor configured to configure transceiver circuitry to transmit an uplink (UL) grant comprising an indication of UL radio resources and a modality group to a user equipment (UE) , wherein the modality group comprises one or more traffic flows, wherein the traffic flows comprise one of Quality of Service (QoS) flows, logical channel (LCH) or data radio bearer (DRB) and decode, from signals received from the UE on the UL radio resources, a data unit generated using data from traffic flows included in the modality group. Brief Description of the Drawings Fig. 1 shows an exemplary network arrangement according to various exemplary embodiments. Fig. 2 shows an exemplary user equipment (UE) according to various exemplary embodiments. Fig. 3 shows an exemplary base station according to various exemplary embodiments. Fig. 4 shows an example of multi-modal traffic according to various exemplary embodiments. Fig. 5 shows an example of logical channels (LCHs) for multiple modalities being multiplexed into the same Medium Access Control (MAC) Protocol Data Unit (PDU) according to various exemplary embodiments. Fig. 6 shows a call flow for identifying a set of IP flows corresponding to modalities that should be delivered in a synchronized manner according to various exemplary embodiments. Fig. 7 shows an exemplary call flow for modality group specific uplink scheduling according to various exemplary embodiments. Fig. 8 shows an exemplary method for adj usting the configuration of a traffic flow according to various exemplary embodiments. Fig. 9 shows an exemplary method for a UE to account for synchronization of multi-modal services when selecting LCHs  during a Logical Channel Prioritization (LCP) procedure according to various exemplary embodiments Detailed Description The exemplary embodiments may be further understood with reference to the following description and the related appended drawings, wherein like elements are provided with the same reference numerals. The exemplary embodiments relate to synchronized data flows for multi-modal services. The exemplary embodiments are described with regard to a UE. However, reference to a UE is merely provided for illustrative purposes. The exemplary embodiments may be utilized with any electronic component that may establish a connection to a network and is configured with the hardware, software, and/or firmware to exchange information and data with the network. Therefore, the UE as described herein is used to represent any appropriate type of electronic component. The exemplary embodiments are also described with regard to a 5G NR n