WO2023231026A1 - Dispositif et procédé de communication sans fil pour trafic de réalité étendue - Google Patents

Dispositif et procédé de communication sans fil pour trafic de réalité étendue Download PDF

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Publication number
WO2023231026A1
WO2023231026A1 PCT/CN2022/096981 CN2022096981W WO2023231026A1 WO 2023231026 A1 WO2023231026 A1 WO 2023231026A1 CN 2022096981 W CN2022096981 W CN 2022096981W WO 2023231026 A1 WO2023231026 A1 WO 2023231026A1
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Prior art keywords
stream
downlink
uplink
enhanced
grant
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PCT/CN2022/096981
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English (en)
Inventor
Yincheng Zhang
Jia SHENG
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Shenzhen Tcl New Technology Co., Ltd.
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Priority to PCT/CN2022/096981 priority Critical patent/WO2023231026A1/fr
Publication of WO2023231026A1 publication Critical patent/WO2023231026A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]

Definitions

  • the present disclosure relates to the field of communication systems, and more particularly, to wireless communication method and device for extended reality (XR) traffic.
  • XR extended reality
  • Wireless communication systems such as the third-generation (3G) of mobile telephone standards and technology are well known.
  • 3G standards and technology have been developed by the third Generation Partnership Project (3GPP) .
  • the 3rd generation of wireless communications has generally been developed to support macro-cell mobile phone communications.
  • Communication systems and networks have developed towards being a broadband and mobile system.
  • UE user equipment
  • RAN radio access network
  • the RAN comprises a set of base stations (BSs) that provide wireless links to the UEs located in cells covered by the base station, and an interface to a core network (CN) which provides overall network control.
  • BSs base stations
  • CN core network
  • the RAN and CN each conduct respective functions in relation to the overall network.
  • LTE Long Term Evolution
  • E-UTRAN Evolved Universal Mobile Telecommunication System Territorial Radio Access Network
  • 5G or NR new radio
  • the 5G wireless communication system has been designed to deliver enhanced mobile broadband (eMBB) , ultra-reliable low-latency communication (URLLC) , and massive machine type communication (mMTC) services.
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency communication
  • mMTC massive machine type communication
  • Extended reality (XR) and cloud gaming service is an important media application enabled by 5G.
  • XR service has some unique characteristics in the traffic profile while the current 5G system may not support XR service every well.
  • Some characteristics of XR traffic are list in the following:
  • Video stream is the most important data stream of an XR service.
  • a video stream comprises a sequence of consecutive video frames.
  • Each video frame is a picture encoded/compressed using different codec mechanisms (e.g., H. 264/H. 265/H. 266, AV1 or Audio Video coding Standard known as AVS) for efficient storage and transmission.
  • codec mechanisms e.g., H. 264/H. 265/H. 266, AV1 or Audio Video coding Standard known as AVS
  • three major frame/picture types i.e., I-frame, P-frame, and B-frame
  • the data size is different for each frame.
  • a frame can be segmented into a group of packets.
  • the variable size of video frame can cause at least a variable size of packet or a variable number of packets for different frames.
  • XR service is one kind of real-time service and also characterized by high data rate and low latency.
  • the guaranteed data rate is around 100 megabits per the second (Mbps) with a 60 to 120 Hz frame rate and 8K video resolution.
  • the downlink (DL) data rate can exceed 100 Mbps, and the uplink (UL) data rate can be 50 Mbps per UE with low latency (e.g., 2.5ms latency) .
  • a packet error rate should be less than 10 -4 for both UL transmission and 10 -5 for DL transmission.
  • Non-integer periodicity according to the agreed traffic models for XR service in the release seventeen (Rel-17) XR study item (SI) in 3GPP RAN1, a video stream of XR service can be configured with 30, 60, 90, or 120 frames per the second (FPS) . As a consequence, the XR frames will arrive at RAN quasi-periodically with respective periodicity of 1/60, 1/90, or 1/120 the second, known as non-integer periodicity.
  • SPS Semi-persistent scheduling
  • CG configured grant
  • the current configurations for SPS/CG periodicities cannot match the non-integer periodicities of the XR traffic.
  • XR traffic has a jitter effect for the data packet arrival time due to the different delay caused by XR data encoding, rendering, and network delivery.
  • the jitter effect renders the arrival time for a particular packet unpredictable for an XR traffic receiver device, such as a gNB or a UE.
  • an XR traffic receiver device such as a gNB or a UE.
  • a truncated Gaussian distribution is used to model the jitter for XR traffic.
  • the range of jitter is agreed to be [-4, 4] ms (i.e., from -4 ms to 4 ms) as baseline and [-5, 5] ms (i.e., from -5 ms to 5 ms) as optional.
  • the performance of SPS/CG cannot support XR service every well since the configured periodicity cannot adapt to the random jitter effect.
  • Option 3 FOV + omnidirectional stream.
  • an XR traffic flow of the Option 1 comprises a stream of I-frame and a stream of P-frame.
  • the video, audio, and data respectively represent a video stream, an audio stream, and a data stream in an XR traffic flow.
  • an XR traffic flow of the Option 2 comprises a video stream and an audio/data stream.
  • FOV represents a stream of field of vision (FOV) in an XR traffic flow.
  • an XR traffic flow of the Option 3 comprises a stream of FOV and an omnidirectional stream.
  • ⁇ Option 2 pose/control + aggregating scene, video, data, and audio;
  • Option 3A pose/control + aggregating streams of scene and video + aggregating streams of audio and data
  • ⁇ Option 3B pose/control + I-stream for video + P-stream for video.
  • pose/control represents a stream of pose and control information of an XR traffic flow.
  • aggregating scene, video, data, and audio represents a stream of aggregated scene, video, data, and audio.
  • XR traffic has both DL and UL parts both of which are periodic or quasi-periodic.
  • Current specification has no mechanism to align the uplink and downlink transmission. Except waking up to receive or transmit traffic, a modem in UE can enter a low power state to save battery. If DL and UL traffic are received and transmitted at different locations in time, the modem needs to wake up multiple times to process them, which requires additional state transition time and additional power. Additionally, current discontinuous reception (DRX) related timer operation may extend UE awake time whenever there is either DL or UL activity. Discontinuous DL and UL traffic would result in more UE awake time and accordingly more UE power consumption.
  • DRX discontinuous reception
  • An object of the present disclosure is to propose a user equipment (UE) , a base station, and a wireless communication method.
  • UE user equipment
  • an embodiment of the invention provides a wireless communication method, executable in user equipment (UE) , comprising:
  • CG enhanced configured grant
  • PDCCH physical downlink control channel
  • an embodiment of the invention provides a wireless communication comprising a processor configured to call and run a computer program stored in a memory, to cause a device in which the processor is installed to execute the disclosed method.
  • an embodiment of the invention provides a wireless communication method, executable in a base station, comprising:
  • CG enhanced configured grant
  • PDCCH physical downlink control channel
  • an embodiment of the invention provides a wireless communication comprising a processor configured to call and run a computer program stored in a memory, to cause a device in which the processor is installed to execute the disclosed method.
  • the disclosed method may be implemented in a chip.
  • the chip may include a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute the disclosed method.
  • the disclosed method may be programmed as computer executable instructions stored in non-transitory computer readable medium.
  • the non-transitory computer readable medium when loaded to a computer, directs a processor of the computer to execute the disclosed method.
  • the non-transitory computer readable medium may comprise at least one from a group consisting of: a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a Read-Only Memory, a Programmable Read-Only Memory, an Erasable Programmable Read-Only Memory, EPROM, an Electrically Erasable Programmable Read-Only Memory and a Flash memory.
  • the disclosed method may be programmed as a computer program product, which causes a computer to execute the disclosed method.
  • the disclosed method may be programmed as a computer program, which causes a computer to execute the disclosed method.
  • Embodiments of the invention provide:
  • FIG. 1 illustrates a schematic view showing an example of a telecommunication system.
  • FIG. 2 illustrates a schematic view showing an embodiment of a network for the disclosed wireless communication method.
  • FIG. 3 illustrates a schematic view showing a wireless communication method according to an embodiment of the disclosure.
  • FIG. 4 illustrates a schematic view showing a wireless communication method according to an embodiment of the disclosure.
  • FIG. 5 illustrates a schematic view showing an example of an XR service with one stream processed by the method.
  • FIG. 6 illustrates a schematic view showing an example of an XR service with more streams processed by the method.
  • FIG. 7 illustrates a schematic view showing an example of an XR service with more streams processed by the method.
  • FIG. 8 illustrates a schematic view showing a time interval T1 between every two adjacent CG occasions, periodicity of a XR packet pattern, and periodicity of XR frames.
  • FIG. 9 illustrates a schematic view showing a first embodiment of sharing time information for transmission of the downlink traffic.
  • FIG. 10 illustrates a schematic view showing a second embodiment of sharing time information for transmission of the downlink traffic.
  • FIG. 11 illustrates a schematic view showing a system for wireless communication according to an embodiment of the present disclosure.
  • This invention disclosed a wireless communication method for processing extended reality (XR) traffic in extended reality (XR) service (s) .
  • XR service may include augmented reality (AR) , virtual reality (VR) , or mixed reality (MR) .
  • a telecommunication system including a UE 10a, a UE 10b, a base station (BS) 20a, and a network entity device 30 executes the disclosed method according to an embodiment of the present disclosure.
  • FIG. 1 is shown for illustrative, not limiting, and the system may comprise more UEs, BSs, and CN entities. Connections between devices and device components are shown as lines and arrows in the FIGs.
  • the UE 10a may include a processor 11a, a memory 12a, and a transceiver 13a.
  • the UE 10b may include a processor 11b, a memory 12b, and a transceiver 13b.
  • the base station 20a may include a processor 21a, a memory 22a, and a transceiver 23a.
  • the network entity device 30 may include a processor 31, a memory 32, and a transceiver 33.
  • Each of the processors 11a, 11b, 21a, and 31 may be configured to implement proposed functions, procedures and/or methods described in the description. Layers of radio interface protocol may be implemented in the processors 11a, 11b, 21a, and 31.
  • Each of the memory 12a, 12b, 22a, and 32 operatively stores a variety of programs and information to operate a connected processor.
  • Each of the transceivers 13a, 13b, 23a, and 33 is operatively coupled with a connected processor, transmits and/or receives radio signals or wireline signals.
  • the UE 10a may be in communication with the UE 10b through a sidelink.
  • the base station 20a may be an eNB, a gNB, or one of other types of radio nodes, and may configure radio resources for the UE 10a and UE 10b.
  • the network entity device 30 may be a node in a CN.
  • CN may include LTE CN or 5G core (5GC) which includes user plane function (UPF) , session management function (SMF) , 5G core access and mobility management function (AMF) , unified data management (UDM) , policy control function (PCF) , control plane (CP) /user plane (UP) separation (CUPS) , authentication server (AUSF) , network slice selection function (NSSF) , and the network exposure function (NEF) .
  • UPF user plane function
  • SMF session management function
  • AMF 5G core access and mobility management function
  • UDM unified data management
  • PCF policy control function
  • PCF control plane
  • CP control plane
  • UP user plane
  • CUPS authentication server
  • NSSF network slice selection function
  • NEF network exposure function
  • An example of the UE in the description may include one of the UE 10a or UE 10b.
  • An example of the base station in the description may include the base station 20a.
  • Uplink (UL) transmission of a control signal or data may be a transmission operation from a UE to a base station.
  • Downlink (DL) transmission of a control signal or data may be a transmission operation from a base station to a UE.
  • a DL control signal may comprise downlink control information (DCI) or a radio resource control (RRC) signal, from a base station to a UE.
  • DCI downlink control information
  • RRC radio resource control
  • FIG. 2 is a model of a transport network for XR service supported by 5G system.
  • a UE 10 is a 5G terminal which can support XR service and XR application and can be referred to as a client, a client terminal, or an XR client.
  • a gNB 20 is 5G radio node. The gNB 20 communicates with the UE 10 and provides NR user plane and control plane protocol terminations towards the UE via NR Uu interface. The gNB 20 connects via NG interface to a 5GC 300.
  • An AMF 30b is an AMF in the 5GC 300 which is a 5G Core Network.
  • DN 40 is a data network (DN) 40 where an XR server 41 providing XR service is located.
  • the DN 40 can provide network operator services, Internet access, or 3rd party services.
  • the XR server 41 may include a processor 411, a memory 412, and a transceiver 413.
  • the processor 411 may be configured to implement XR service related functions, procedures and/or methods described in the description. Layers of radio interface protocol may be implemented in the processor 411.
  • the memory 412 operatively stores a variety of programs and information to operate a connected processor.
  • the transceiver 413 is operatively coupled with a connected processor, transmits and/or receives radio signals or wireline signals.
  • Each of the processors 411, 11a, 11b, 21a, and 31 may include an application-specific integrated circuit (ASICs) , other chipsets, logic circuits and/or data processing devices.
  • ASICs application-specific integrated circuit
  • Each of the memory 412, 12a, 12b, 22a, and 32 may include read-only memory (ROM) , a random access memory (RAM) , a flash memory, a memory card, a storage medium and/or other storage devices.
  • Each of the transceivers 413, 13a, 13b, 23a, and 33 may include baseband circuitry and radio frequency (RF) circuitry to process radio frequency signals.
  • RF radio frequency
  • the modules may be stored in a memory and executed by the processors.
  • the memory may be implemented within a processor or external to the processor, in which those may be communicatively coupled to the processor via various means are known in the art.
  • a device executing the wireless communication method may be a transmitter device that transmits an XR traffic flow of an XR service to a receiver device or a receiver device that receives the XR traffic flow.
  • the XR traffic flow may comprise one or more XR streams of the XR service.
  • the device executing the wireless communication method may comprise the gNB 20, an XR server 41 in data network 40, or a UE.
  • the XR server 41 in data network 40 may operate as a transmitter device that executes a wireless communication method in some XR traffic delivery occasions, while the UE 10 operates as the receiver device receiver the XR traffic flow sent from the transmitter device.
  • the UE 10 may operate as a transmitter device to execute a wireless communication method in some XR traffic delivery occasions, while the XR server 41 operates as the receiver device receiver the XR traffic flow sent from the transmitter device.
  • the transmitter device may comprise an intermediate device between the UE 10 and the XR server 41.
  • the UE 10 may comprise an embodiment of the UE 10a or UE 10b.
  • the gNB 20 may comprise an embodiment of the base station 20a.
  • the wireless communication method may be executed by a base station, such as another gNB, an eNB, a base station integrating an eNB and a gNB, or a base station for beyond 5G technologies.
  • the AMF/5GC 30b may comprise another network entity of 5GC.
  • One or more steps (or blocks) in of embodiments of the disclosure may be implemented as computer programs, instructions, software module (s) stored in a memory of the transmitter device, or circuits or hardware module (s) in a processor of the transmitter device, or IC chip (s) , circuits, or plug-in (s) of the transmitter device.
  • a video stream of an XR service will be encoded and compressed in form of frames quasi-periodically with the respective frame periodicity of 1/60, 1/90, or 1/120 the second. Since the transmitter device may divide a video stream of an XR service into a number of transport units, encapsulate and transmit each of the transport units into a transport packet transmitted across the network, the transmission mechanism of the XR service is actually based on packet instead of frame.
  • the size of each of the packets may be variable, the number of the packets may be variable and configurable based on one or more parameters of the QoS requirements and characteristics of the XR service, such as packet delay budget (PDB) , packet error rate (PER) , packet loss rate (PLR) , frame error rate, frame delay budget, resolution, frame rate, and/or data rate.
  • PDB packet delay budget
  • PER packet error rate
  • PLR packet loss rate
  • the UE 10 and gNB 20 executes an embodiment of the disclosed method and initiates an XR service (A101 and B101) .
  • the UE 10 executes the wireless communication method to configures a first enhanced configured grant (CG) for a first uplink stream of an extended reality (XR) service, wherein the first uplink stream belongs to a first type of XR stream in the XR service (A102) .
  • the UE 10 configures a first downlink stream of the XR service with the first uplink stream of the XR service, wherein periodicity of the first downlink stream is synchronizable with periodicity of the first uplink stream (A103) .
  • the gNB 20 executes the wireless communication method to configures a first enhanced configured grant (CG) for a first uplink stream of an extended reality (XR) service, wherein the first uplink stream belongs to a first type of XR stream in the XR service (B102) .
  • the gNB 20 configures the first downlink stream of the XR service with the first uplink stream of the XR service, wherein periodicity of the first downlink stream is synchronizable with periodicity of the first uplink stream (B103) .
  • the UE 10 performs an uplink transmission for the first uplink stream on a CG belonging to the first enhanced configured grant if having uplink data and/or status reporting for the first uplink stream to be transmitted (A105) .
  • the uplink transmission for the first uplink stream on a CG belonging to the first enhanced configured grant comprises transmission of buffer status reporting (BSR) .
  • BSR buffer status reporting
  • the gNB 20 determines whetherthe uplink transmission for the first uplink stream is received by the gNB 20 on the CG belonging to the first enhanced configured grant (B105) .
  • the gNB 20 transmits in physical downlink control channel (PDCCH) an uplink dynamic grant for the first uplink stream according to the received status reporting for the first uplink stream on a CG belonging to the first enhanced configured grant; and in the first time duration a predefined offset after the CG belonging to the first enhanced configured grant, the gNB 20 transmits in the PDCCH a downlink dynamic assignment for a first downlink stream if having downlink traffic data for the first downlink stream to be transmitted (B106) .
  • the first time duration is timed by a first timer for the first enhanced configured grant.
  • the UE 10 monitors the PDCCH to receive the uplink dynamic grant for the first uplink stream and/or the downlink dynamic assignment for the first downlink stream in the first time duration a predefined offset after the uplink transmission for the first uplink stream on the CG belonging to the first enhanced configured grant (A106) .
  • the first time duration is timed by a first timer for the first enhanced configured grant.
  • the first timer and the predefined offset may be configured in ConfiguredGrantConfig information element or configured by downlink control information (DCI) or predefined.
  • the first time duration may be a portion of an active time in discontinuous reception (DRX) of the UE.
  • the UE 10 transmits traffic data of the first uplink stream according to the uplink dynamic grant (A108) .
  • the gNB 20 receives traffic data of the first uplink stream according to the uplink dynamic grant (B108) .
  • the gNB 20 transmits traffic data of the first downlink stream according to the downlink dynamic assignment (B109) .
  • the UE 10 receives traffic data of the first downlink stream according to the downlink dynamic assignment (A109) .
  • the UE 10 further configures a second enhanced configured grant (CG) for a second uplink stream of the XR service, wherein the second uplink stream belongs to a second type of XR stream in the XR service (A102) .
  • the UE 10 configures a second downlink stream of the XR service with the second uplink stream of the XR service, wherein periodicity of the second downlink stream is synchronizable with periodicity of the second uplink stream.
  • the gNB 20 further configures a second enhanced configured grant (CG) for a second uplink stream of the XR service, wherein the second uplink stream belongs to a second type of XR stream in the XR service.
  • the gNB 20 configures the second downlink stream of the XR service with the second uplink stream of the XR service, wherein periodicity of the second downlink stream is synchronizable with periodicity of the second uplink stream.
  • the UE 10 performs an uplink transmission for the second uplink stream on a CG belonging to the second enhanced configured grant if having uplink data and/or status reporting for the second uplink stream to be transmitted.
  • the uplink transmission for the second uplink stream on a CG belonging to the second enhanced configured grant comprises transmission of buffer status reporting.
  • the gNB 20 receives the uplink transmission for the second uplink stream on the CG belonging to the second enhanced configured grant.
  • the gNB 20 transmits in physical downlink control channel (PDCCH) an uplink dynamic grant for the second uplink stream according to the received status reporting for the second uplink stream on a CG belonging to the second enhanced configured grant; and in the second time duration a predefined offset after the CG belonging to the second enhanced configured grant, the gNB 20 transmits in the PDCCH a downlink dynamic assignment for a second downlink stream if having downlink traffic data for the second downlink stream to be transmitted.
  • the second time duration is timed by a second timer for the second enhanced configured grant.
  • the UE 10 monitors the PDCCH to receive the uplink dynamic grant for the second uplink stream and/or the downlink dynamic assignment for the second downlink stream in the second time duration a predefined offset after the uplink transmission for the second uplink stream on the CG belonging to the second enhanced configured grant.
  • the second time duration is timed by a second timer for the second enhanced configured grant.
  • the second timer and the predefined offset may be configured in ConfiguredGrantConfig information element or configured by downlink control information (DCI) or predefined.
  • the second time duration may be a portion of an active time in discontinuous reception (DRX) of the UE.
  • the UE 10 transmits traffic data of the second uplink stream according to the uplink dynamic grant.
  • the gNB 20 receives traffic data of the second uplink stream according to the uplink dynamic grant.
  • the gNB 20 transmits traffic data of the second downlink stream according to the downlink dynamic assignment.
  • the UE 10 receives traffic data of the second downlink stream according to the downlink dynamic assignment.
  • the gNB 20 configures a Semi-Persistent Schedule (SPS) for a second downlink stream, wherein the second downlink stream belongs to a second type of stream.
  • SPS Semi-Persistent Schedule
  • the gNB 20 traffic data of the second downlink stream on a SPS belonging to the Semi-Persistent Schedule.
  • the UE 10 receives traffic data of the second downlink stream on a SPS belonging to the Semi-Persistent Schedule.
  • the UE 10 configures a normal configured grant for a third uplink stream of the XR service, wherein the third uplink stream belongs to a third type of XR stream in the XR service.
  • the UE 10 performs an uplink transmission for the third XR stream on a CG belonging to the normal configured grant.
  • the gNB 20 configures a normal configured grant for a third uplink stream of the XR service.
  • the gNB 20 receives the uplink transmission for the third XR stream on the CG belonging to the normal configured grant.
  • the UE 10 transmits time information for transmission of downlink traffic in the first downlink stream to an XR server.
  • the time information may comprise one or more following information:
  • ⁇ an estimated transport delay time from the XR server to a base station serving the UE
  • ⁇ a preferred start time at the server for the downlink traffic in the first downlink stream.
  • the time information is obtained from a configuration message sent from the base station.
  • the time information is deduced from the time information for downlink radio resource allocated for transmission of the downlink traffic in the first downlink stream.
  • the UE transmits an initial preferred start time to the base station and receives a start time determined by the base station as preferred start time for the downlink traffic in the first downlink stream.
  • the gNB 20 may determine a start time as the preferred start time for the downlink traffic in the first downlink stream based on the initial preferred start time received from the UE 10.
  • the start time determined by the base station is carried in a CG activation for a CG or a radio resource control (RRC) configuration message for the CG.
  • RRC radio resource control
  • Variable video frame, high data rate and periodic Even though the video traffic of XR service is periodic or quasi-periodic, the current CG and SPS approaches based on semi-static configuration of fixed periodicities and grant sizes are not obviously adequate to support XR traffic with the characteristic of the variable and high data rate.
  • ⁇ Jitter For downlink, jitter will render the arrival time for a particular packet unpredictable for the gNB 20.
  • ⁇ Bidirectional For uplink, the traffic has no jitter and transport delay at UE side since the data generated at the UE, the time for the packet bursts of the video frame can be predictable.
  • DRX functionality is one of the essential configurations for UE power saving in RRC connected state.
  • a method for the transmission alignment between uplink and downlink is disclosed as follows.
  • Downlink traffic or uplink traffic in the description of may be Downlink traffic or uplink traffic belonging to one or more streams of an XR service
  • traffic data in the description of may be traffic data belonging to one or more streams of an XR service.
  • Traffic data of an XR service is transmitted on physical uplink shared channel (PUSCH) .
  • PUSCH physical uplink shared channel
  • the gNB 20 configures the buffering functionality for downlink traffic
  • the gNB 20 configures one or more enhanced CG (s) to the UE 10, for each enhanced CG:
  • the gNB 20 configures a duration and a time offset for the UE 10, so that the UE 10 monitors PDCCH to receive the subsequent uplink dynamic grant (or dynamic schedule) and/or downlink dynamic assignment (or dynamic schedule) in RRC connected state according to the duration and a time offset;
  • the gNB 20 configures zero or one normal CG and/or SPS which are defined as that in current 3GPP specifications to the UE 10.
  • the gNB 20 transmits uplink dynamic grant to the UE 10 if the gNB 20 receives uplink scheduling request from the UE 10 on the enhanced CG during the duration;
  • the gNB 20 transmits downlink dynamic assignment to the UE 10 if having downlink traffic data to be transmitted during the duration.
  • the gNB 20 transmits downlink traffic data on PDSCH according to the downlink dynamic assignment.
  • the gNB 20 receives uplink traffic data on PUSCH according to the uplink dynamic grant.
  • the gNB 20 transmits downlink traffic data to the UE 10 by the one or more normal SPSs according to the procedure in current 3GPP standards if having one or more normal SPSs configured;
  • the gNB 20 receives uplink traffic data from the UE 10 by the one or more normal CGs according to the procedure in current 3GPP standards if having one or more normal CGs configured;
  • the UE 10 receives one or more CGs as enhanced CGs to the UE 10, for each enhanced CG:
  • the UE 10 receives the configurations of zero or one normal CG and/or SPS which are defined as that in current 3GPP specifications from the gNB 20.
  • the UE 10 transmits uplink scheduling request to the gNB 20 on the enhanced CGs;
  • the UE 10 After waiting a period defined by the time offset following XR traffic transmission in the CG occasion, the UE 10 starts monitoring the PDCCH during the duration
  • the UE 10 receives uplink dynamic grant if BSR was transmitted in the previous enhanced CG and transmits uplink traffic data on PUSCH according to the uplink dynamic grant.
  • the UE 10 transmits uplink traffic data on PUSCH according to the uplink dynamic grant if uplink dynamic grant was received.
  • the UE 10 receives downlink traffic data on PDSCH according to the downlink dynamic assignment if downlink dynamic assignment was received.
  • the UE 10 transmits uplink traffic data to the gNB 20 by the one or more normal CGs according to the procedure in current 3GPP standards if being provided one or more normal CGs configured;
  • the UE 10 receives downlink traffic data from the gNB 20 by the one or more normal SPSs according to the procedure in current 3GPP standards if being provided one or more normal SPSs configured;
  • the downlink dynamic assignment may include one or multiple radio resources in time domain for PDSCH transmission (s) and the gNB 20 can transmit one or multiple transport blocks (TBs) by the downlink dynamic assignment to the UE 10.
  • s PDSCH transmission
  • TB transport blocks
  • the uplink dynamic grant may include one or multiple radio resources in time domain for PUSCH transmission (s) , and the UE 10 can transmit one or multiple transport blocks (TBs) by the uplink dynamic grant to the gNB 20.
  • s PUSCH transmission
  • TB transport blocks
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • only one CG (e.g., CG1) is configured as an enhanced CG for the XR traffic transmission, and a timer is configured for the enhanced CG.
  • CG1 CG1
  • a timer is configured for the enhanced CG.
  • Uplink traffic of an XR service consists of only one stream with a variable data rate
  • Downlink traffic of the XR service consists of only one stream with a variable data rate.
  • the stream 1 may be a stream of pose/control and the stream 2 may be a stream aggregating scene, video, data, and audio.
  • the embodiment is not limited to the example, the streams may be set according to another option in the two stream models.
  • the disclosed method comprises a data transmission procedure including steps.
  • the steps are not limited to the particular order in the description.
  • An axis t in the FIGs represents a time domain.
  • the gNB 20 configures the buffering functionality for downlink traffic.
  • the gNB 20 configures an enhanced CG1 to the UE 10.
  • the gNB 20 configures a duration timed by a timer which is referred to as subsequentDynamicTimer for CG1.
  • the gNB 20 may configure a value as an initial value of the timer subsequentDynamicTimer.
  • the gNB 20 configures a time offset which is referred to as “Predefined offset” for CG1.
  • the time offset can be 0, 1, or more measured in a time unit, such as symbol, slot, sub-slot, mini-slot, or millisecond.
  • the UE 10 transmits BSR to the gNB 20 on CG1.
  • the BSR may comprise enhanced BSR. As illustrated in FIG. 5, BSRs are sent at occasions 1, 2, and 4, while no BSR is sent at occasion 3.
  • the UE 10 starts monitoring the PDCCH till the timer subsequentDynamicTimer expires.
  • the gNB 20 transmits uplink dynamic grant (referred to as DG1) to the UE 10 on PDCCH during the time duration when the timer subsequentDynamicTimer is running if the gNB 20 receives uplink scheduling request from the UE 10 on the enhanced CG.
  • DG1 uplink dynamic grant
  • the gNB 20 transmits uplink dynamic grants to the UE 10 for the BSRs at occasions 1, 2, and 4, and no uplink dynamic grant to the UE 10 for occasion 3 since no BSR is sent to the gNB 20 between the occasion 2 and the occasion 3.
  • the gNB 20 transmits downlink dynamic assignment (DA1) to the UE 10 on PDCCH if having downlink traffic data to be transmitted during the time duration when the timer subsequentDynamicTimer is running. As illustrated in FIG. 5, the gNB 20 transmits downlink dynamic assignments to the UE 10 for the occasions 1, 2, and 3, and no downlink dynamic assignment to the UE 10 for occasion 4.
  • DA1 downlink dynamic assignment
  • the UE 10 transmits and the gNB 20 receives the uplink traffic data of the XR service on PUSCH according to the uplink dynamic grants on PDCCH.
  • the UE 10 receives and the gNB 20 transmits the downlink traffic data of the XR service on PDSCH according to the downlink dynamic assignment on PDCCH.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • CGs are configured for the XR traffic transmission; CG1 and CG3 are configured as normal CGs; CG2 is configured as an enhanced CG, and a timer is configured for CG2.
  • This embodiment is suitable for the case:
  • Uplink traffic of an XR service has three streams comprising a first uplink stream U1, a second uplink stream U2, and a third uplink stream U3, where
  • the first uplink stream U1 has a stable data rate
  • the second uplink stream U2 has a variable data rate
  • the third uplink stream U3 has a stable data rate.
  • Downlink traffic of the XR service has two streams comprising a first downlink stream D1 and a second downlink stream D2, where
  • the first downlink stream D1 has a variable data rate
  • the second downlink stream D2 has a stable data rate.
  • the periodicity of the second uplink stream U2 is the same as or similar to the periodicity of the first downlink stream D1.
  • the periodicity of the third uplink stream U3 is the same as or similar to the periodicity of the second downlink stream D2.
  • Table 1 shows association between the uplink and downlink streams, association between uplink streams and CGs, and association between downlink streams and downlink radio resources, such as DA or SPS.
  • the first uplink stream U1 may be a stream of pose/control
  • the second uplink stream U2 may be a stream aggregating streams of scene and video
  • the third uplink stream U3 may be a stream aggregating streams of audio and data.
  • the first downlink stream D1 may be a stream of video
  • the second downlink stream D2 may be a stream of audio/data. Note that the embodiment is not limited to the example, the streams may be set according to another option in the aforementioned stream models.
  • the disclosed method comprises a data transmission procedure including steps.
  • the steps are not limited to the particular order in the description.
  • the gNB 20 configures the buffering functionality for downlink traffic comprising the first downlink stream D1.
  • the gNB 20 configures CG1 and CG3 as normal CG for the first uplink stream U1 and the third uplink stream U3 respectively and configures CG2 as an enhanced CG for the second uplink stream U2 to the UE 10.
  • CG1 and CG3 as normal CG for the first uplink stream U1 and the third uplink stream U3 respectively and configures CG2 as an enhanced CG for the second uplink stream U2 to the UE 10.
  • the gNB 20 configures a duration timed by a timer which is referred to as subsequentDynamicTimer for CG2; the gNB 20 may configure a value as an initial value of the timer subsequentDynamicTimer;
  • ⁇ the gNB 20 configures a time offset which is referred to as “Predefined offset” for CG2;
  • ⁇ the time offset can be 0, 1, or more measured in a time unit, such as symbol, slot, sub-slot, mini-slot, or millisecond.
  • the gNB 20 configures one normal SPS (referred to SPS1) for the second downlink stream D2 to the UE 10.
  • the periodicity of the SPS1 is the same as or similar to the periodicity of the CG3.
  • the occasions of SPS1 are the same as or as close as possible to CG occasions of CG3.
  • the occasions of SPS1 are as close as possible to CG occasions of CG3.
  • the UE 10 transmits BSR to the gNB 20 on CG2 if having BSR for the second uplink stream U2 to be transmitted.
  • the BSR may comprise enhanced BSR. As illustrated in FIG. 6, BSRs are sent at occasions 1, 2, and 4, while no BSR is sent between the occasion 2 and the occasion 3.
  • the UE 10 starts monitoring the PDCCH till the timer subsequentDynamicTimer expires.
  • the gNB 20 transmits uplink dynamic grant (referred to as DG2) to the UE 10 on PDCCH if the gNB 20 receives BSR from the UE 10 on the enhanced CG2 during the time duration when the timer subsequentDynamicTimer is running. As illustrated in FIG. 6, the gNB 20 transmits uplink dynamic grants to the UE 10 for the BSRs at occasions 1, 2, and 4, and no uplink dynamic grant to the UE 10 at occasion 3 since no BSR is sent between the occasion 2 and the occasion 3.
  • DG2 uplink dynamic grant
  • the gNB 20 transmits downlink dynamic assignment (referred to as DA2) to the UE 10 on PDCCH if having downlink traffic data of the first downlink stream D1 to be transmitted during the time duration when the timer subsequentDynamicTimer is running. As illustrated in FIG. 6, the gNB 20 transmits downlink dynamic assignments to the UE 10 for the occasions 1, 3, and 4, and no downlink dynamic assignment to the UE 10 for occasion 2.
  • DA2 downlink dynamic assignment
  • the gNB 20 transmits downlink dynamic assignments to the UE 10 for the occasions 1, 3, and 4, and no downlink dynamic assignment to the UE 10 for occasion 2.
  • the UE 10 transmits and the gNB 20 receives the uplink traffic data of the second uplink stream U2 on PUSCH according to the uplink dynamic grants on PDCCH for the second uplink stream U2.
  • the gNB 20 transmits and the UE 10 receives the downlink traffic data of the first downlink stream D1 on PDSCH according to the downlink dynamic assignment on PDCCH for the first downlink stream D1.
  • the UE 10 transmits and the gNB 20 transmits the uplink traffic data of the first uplink stream U1 on CG1 periodically with the periodicity P1 or quasi-periodically.
  • the UE 10 transmits and the gNB 20 transmits the uplink traffic data of the third uplink stream U3 on CG3 periodically with the periodicity P3 or quasi-periodically.
  • the gNB 20 transmits and the UE 10 receives downlink traffic data of the second downlink stream D2 by SPS1 periodically with the periodicity P3 or quasi-periodically.
  • CGs are configured for the XR traffic transmission; CG1 and CG3 are configured as normal CGs; CG2 is configured as an enhanced CG, and a timer is configured for CG2.
  • This embodiment is suitable for the case:
  • Uplink traffic of an XR service has three streams comprising a first uplink stream U11, a second uplink stream U12, and a third uplink stream U13, where
  • the first uplink stream U11 has a stable data rate
  • the second uplink stream U12 has a variable data rate
  • the third uplink stream U13 has a variable data rate.
  • Downlink traffic of the XR service has two streams comprising a first downlink stream D11 and a second downlink stream D12, where
  • the first downlink stream D11 has a variable data rate
  • the second downlink stream D12 has a variable data rate.
  • the periodicity of the second uplink stream U12 is the same as or similar to the periodicity of the first downlink stream D11.
  • the periodicity of the third uplink stream U13 is the same as or similar to the periodicity of the second downlink stream D12.
  • Table 2 shows association between the uplink and downlink streams, association between uplink streams and CGs, and association between downlink streams and downlink radio resources, such as DA or SPS.
  • the first uplink stream U11 may be a stream of pose/control
  • the second uplink stream U12 may be an I-stream for video
  • the third uplink stream U13 may be a P-stream for video.
  • Two streams model option 1 for AR DL in which the first downlink stream D11 be an I-stream for video, and the second downlink stream D12 may be a P-stream for video. Note that the embodiment is not limited to the example, the streams may be set according to another option in the aforementioned stream models.
  • the disclosed method comprises a data transmission procedure including steps.
  • the steps are not limited to the particular order in the description.
  • the gNB 20 configures the buffering functionality for the first downlink stream D11 and the second downlink stream D12.
  • the gNB 20 configures CG1 as a normal CG for the first uplink stream U11 and configures CG2 as an enhanced CG for the second uplink stream U12 and configures CG3 as an enhanced CG for the third uplink stream U13 to the UE 10. For each of the enhanced CGs:
  • the gNB 20 configures a duration timed by a timer which is referred to as subsequentDynamicTimer1 for CG2, the gNB 20 may configure a value as an initial value of the timer subsequentDynamicTimer1;
  • Predefined offset1 for CG2
  • the gNB 20 configures a duration timed by a timer which is referred to as subsequentDynamicTimer2 for CG3, the gNB 20 may configure a value as an initial value of the timer subsequentDynamicTimer2;
  • Predefined offset2 for CG3
  • ⁇ the time offset can be 0, 1, or more measured in a time unit, such as symbol, slot, sub-slot, mini-slot, or millisecond.
  • the UE 10 transmits BSR to the gNB 20 on CG2 if having BSR for the second uplink stream U12 to be transmitted.
  • the BSR may comprise enhanced BSR. As illustrated in FIG. 7, BSRs are sent at occasions 21, 23, and 24, while no BSR is sent at occasion 22.
  • the UE 10 starts monitoring the PDCCH till the timer subsequentDynamicTimer1 expires.
  • the gNB 20 transmits uplink dynamic grant (referred to as DG2) to the UE 10 on PDCCH if the gNB 20 receives BSR from the UE 10 on the enhanced CG2 during the time duration when the timer subsequentDynamicTimer1 is running. As illustrated in FIG. 7, the gNB 20 transmits uplink dynamic grants to the UE 10 for the BSRs at occasion 21, 23, 24, and no uplink dynamic grant to the UE 10 at occasion 22 since no BSR is sent between occasion 21 and occasion 22.
  • uplink dynamic grant referred to as DG2
  • DG2 uplink dynamic grant
  • the gNB 20 transmits downlink dynamic assignment (referred to as DA2) to the UE 10 on PDCCH if having downlink traffic data of the first downlink stream D11 to be transmitted during the time duration when the timer subsequentDynamicTimer1 is running. As illustrated in FIG. 7, the gNB 20 transmits downlink dynamic assignments to the UE 10 at the occasions 22 and 24, and no downlink dynamic assignments to the UE 10 at occasion 21, 23.
  • DA2 downlink dynamic assignment
  • the UE 10 transmits and the gNB 20 receives the uplink traffic data of the second uplink stream U12 on PUSCH according to the uplink dynamic grants on PDCCH for the second uplink stream U12.
  • the gNB 20 transmits and the UE 10 receives the downlink traffic data of the first downlink stream D11 on PDSCH according to the downlink dynamic assignment on PDCCH for the first downlink stream D11.
  • the UE 10 transmits BSR to the gNB 20 on CG3 if having BSR for the third uplink stream U13 to be transmitted.
  • the BSR may comprise enhanced BSR. As illustrated in FIG. 7, a BSR is sent at occasion 31, while no BSR is sent at occasion 32.
  • the UE 10 starts monitoring the PDCCH till the timer subsequentDynamicTimer2 expires.
  • the gNB 20 transmits uplink dynamic grant (referred to as DG3) to the UE 10 on PDCCH if the gNB 20 receives BSR from the UE 10 on the enhanced CG3 during the time duration when the timer subsequentDynamicTimer2 is running. As illustrated in FIG. 7, the gNB 20 transmits uplink dynamic grant to the UE 10 for the BSR at occasion 31, and no uplink dynamic grant to the UE 10 at occasion 32 since no BSR is sent between the occasion 31 and the occasion 32.
  • uplink dynamic grant referred to as DG3
  • the gNB 20 transmits downlink dynamic assignment (DA3) to the UE 10 on PDCCH if having downlink traffic data of the second downlink stream D12 to be transmitted during the time duration when the timer subsequentDynamicTimer2 is running. As illustrated in FIG. 7, the gNB 20 transmits downlink dynamic assignment to the UE 10 at the occasion 32, and no downlink dynamic assignments to the UE 10 at occasion 31.
  • DA3 downlink dynamic assignment
  • the UE 10 transmits and the gNB 20 receives the uplink traffic data of the third uplink stream U13 on PUSCH according to the uplink dynamic grants on PDCCH for the third uplink stream U13.
  • the gNB 20 transmits and the UE 10 receives the downlink traffic data of the second downlink stream D12 on PDSCH according to the downlink dynamic assignment on PDCCH for the second downlink stream D12.
  • the UE 10 transmits and the gNB 20 transmits the uplink traffic data of the first uplink stream U11 on CG1 periodically with the periodicity P1 or quasi-periodically.
  • an additional timer can be introduced according to which the UE 10 can monitor PDCCH to receive the subsequent uplink dynamic grant after a CG occasion in RRC connected state.
  • a predefined time offset between the last symbol of the enhanced CG and the first symbol in the time duration timed by the timer can be configured at the same time.
  • the timer and the time offset while being named as “subsequentDynamicTimer” and “subsequentDynamicOffset” can be named in other terms.
  • timer “subsequentDynamicTimer” is embodied as a field subsequentDynamicTimer-r18
  • time offset “subsequentDynamicOffset” is embodied as a field subsequentDynamicOffset-r18.
  • each stream may have different periodicity.
  • Streams which aggregate one or more video flows may have non-integer periodicity as described in the background.
  • embodiments of configuring the periodicity of configured grant (CG ) are illustrated in the following:
  • the gNB 20 configures a pattern for the CG.
  • p1 is a frame periodicity of the video stream
  • p2 is a periodicity of the pattern
  • the gNB 20 configures a parameters K so that:
  • p2 K *p1, where p2 is integer periodicity which can match the configuration parameters of configured grant (CG ) in current 3GPP specifications, where K is an integer.
  • the gNB 20 configures time interval T1 between every two adjacent CG occasions in a pattern so that:
  • T1 integer duration which can match the configuration parameters of configured grant (CG ) in current 3GPP specifications, where M is integer.
  • M is greater than 1, more than one T1 is configured, and the length of each T1 may be different. However, the total length of the M*T1 should be equal to p2.
  • the gNB 20 configures a periodicity (p1) for CG which is integer periodicity and can match the configuration parameters of configured grant (CG ) in current 3GPP specifications.
  • the gNB 20 dynamically changes the periodicity of the one CG by transmitting downlink control information (DCI) on PDCCH so that the changed p1 and the periodicity (p2) of N CGs is integer periodicity which can match the configuration parameters a of configured grant (CG ) in current 3GPP specifications.
  • DCI downlink control information
  • the gNB 20 configures a periodicity (p1) for CG which is integer periodicity and can match the configuration parameters of configured grant (CG ) in current 3GPP specifications.
  • the periodicity of the one CG can be changed by a configured offset in a radio resource control (RRC) message so that the changed p1 and the periodicity (p2) of N CGs is integer periodicity which can match the configuration parameters of configured grant (CG ) in current 3GPP specifications.
  • RRC radio resource control
  • the radio resources for XR traffic transmission in RAN are managed and assigned by RAN.
  • the XR traffic data is generated and delivered from the application server (e.g., XR server 41) or an XR client (e.g., XR client 42) which is running in the UE 10.
  • the application server e.g., XR server 41
  • an XR client e.g., XR client 42
  • transmission of non-aligned uplink and downlink traffic in RAN will require more UE awake time and accordingly consume more UE power. Synchronized and aligned uplink and downlink XR streams of an XR stream is very helpful to the alignment between uplink and downlink transmission in RAN.
  • Downlink traffic or uplink traffic in the description of may be downlink traffic or uplink traffic belonging to one or more streams of an XR service
  • traffic data in the description of may be traffic data belonging to one or more streams of an XR service.
  • downlink traffic data in the embodiment comprises downlink traffic data of one or more of the first downlink stream D1, first downlink stream D11, and second downlink stream D12.
  • the gNB 20 allocated aligned uplink and downlink radio resources for transmission of the uplink and downlink traffic of the XR service in response to a request (C10) , such as received “PDU session resource setup request” message or “PDU session resource modify request” message from AMF (e.g., AMF 30b) .
  • a request such as received “PDU session resource setup request” message or “PDU session resource modify request” message from AMF (e.g., AMF 30b) .
  • the gNB 20 allocated uplink radio resource for the uplink traffic of the XR service and downlink radio resource for the downlink traffic of the XR service, where the uplink radio resource may be aligned with the downlink radio resource according to the aforementioned embodiments.
  • each of the “PDU session resource setup request” or “PDU session resource modify request” messages may be modified or substituted by another message with a similar function.
  • the gNB 20 provides the allocated aligned uplink and downlink radio resources to the UE 10 in an RRC reconfiguration procedure (C12) , in which additional time information for transmission of the downlink traffic can also be transmitted to the UE 10.
  • the time information for transmission of the downlink traffic can be one or more following information:
  • the UE 10 may transmit an initial preferred start time to the gNB 20 (C14) , and the gNB 20 can determine a start time based on the initial preferred start time and transmit the determined start time as preferred start time for the downlink traffic to the UE 10 via CG activation for a CG (C16) .
  • the determined start time may be transmitted in a radio resource control (RRC) configuration message for the CG.
  • RRC radio resource control
  • the UE 10 transmits the time information for transmission of the downlink traffic to the XR server by an application message.
  • the time information for transmission of the downlink traffic may be obtained from a configuration message sent from the gNB 20.
  • the time information for transmission of the downlink traffic may be deduced from the time information of the downlink radio resource allocated for transmission of the downlink traffic.
  • the time information for transmission of the downlink traffic may include one or more of the following information:
  • ⁇ The estimated transport delay time from the XR server to a base station (e.g., the gNB 20) ;
  • the gNB 20 allocated aligned uplink and downlink radio resources for transmission of the uplink and downlink traffic of the XR service in response to a request (D10) , such as received “PDU session resource setup request” message or “PDU session resource modify request” message from AMF (e.g., AMF 30b) .
  • a request such as received “PDU session resource setup request” message or “PDU session resource modify request” message from AMF (e.g., AMF 30b) .
  • AMF e.g., AMF 30b
  • the gNB 20 allocated uplink radio resource for the uplink traffic of the XR service and downlink radio resource for the downlink traffic of the XR service, where the uplink radio resource may be aligned with the downlink radio resource according to the aforementioned embodiments.
  • each of the “PDU session resource setup request” or “PDU session resource modify request” messages may be modified or substituted by another message with a similar function.
  • the gNB 20 provides the allocated aligned uplink and downlink radio resources to the UE 10 in RRC reconfiguration procedure (D12) .
  • the UE 10 may transmit an initial preferred start time to the gNB 20 (D14) , and the gNB 20 can determine a start time based on the initial preferred start time and transmit the determined start time as preferred start time for the downlink traffic to the UE 10 via CG activation for a CG (D16) .
  • the determined start time may be transmitted in a radio resource control (RRC) configuration message for the CG.
  • RRC radio resource control
  • the gNB 20 transmits the time information for transmission of the downlink traffic to AMF by the “PDU session resource setup response” message or “PDU session resource modify response” message or other messages in NG-AP protocol (D18) .
  • the time information for transmission of the downlink traffic can comprise one or more of the following information:
  • AMF transmits the time information for transmission of the downlink traffic to the XR server directly or indirectly (D19) .
  • the downlink data can arrive at the gNB 20 while being better aligned with the uplink data so that the gNB 20 can schedule radio resources for transmission of the aligned uplink and downlink traffic with smaller buffer for the downlink data.
  • the gNB 20 can stagger XR traffic data transmissions across the UEs in a cell by allocating different aligned uplink and downlink radio resources for the UEs in the time domain.
  • the embodiment of the disclosed method can improve the capacity of a cell for XR service and save the power of the UE 10.
  • FIG. 11 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present disclosure. Embodiments described herein may be implemented into the system using any suitably configured hardware and/or software.
  • FIG. 11 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, a processing unit 730, a memory/storage 740, a display 750, a camera 760, a sensor 770, and an input/output (I/O) interface 780, coupled with each other as illustrated.
  • RF radio frequency
  • the processing unit 730 may include circuitry, such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include any combinations of general-purpose processors and dedicated processors, such as graphics processors and application processors.
  • the processors may be coupled with the memory/storage and configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems running on the system.
  • the radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc.
  • the baseband circuitry may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry may support communication with 5G NR, LTE, an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN) , a wireless local area network (WLAN) , a wireless personal area network (WPAN) .
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.
  • the baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered as being in a baseband frequency.
  • baseband circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.
  • the system 700 may be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, etc.
  • the system may have more or less components, and/or different architectures.
  • the methods described herein may be implemented as a computer program.
  • the computer program may be stored on a storage medium, such as a non-transitory storage medium.
  • the embodiment of the present disclosure is a combination of techniques/processes that can be adopted in 3GPP specification to create an end product.
  • the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer.
  • the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product.
  • one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product.
  • the software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure.
  • the storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

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Abstract

La divulgation concerne un procédé de communication sans fil, exécutable dans un dispositif de communication sans fil. Le dispositif configure une première autorisation configurée (CG) améliorée associée à un premier flux de liaison montante d'un service de réalité étendue (XR). Le dispositif configure un premier flux de liaison descendante du service XR avec le premier flux de liaison montante du service XR. Le dispositif effectue une transmission en liaison montante du premier flux de liaison montante sur une CG appartenant à la première autorisation configurée améliorée. Le dispositif surveille un canal de commande par rapport à la réception d'une autorisation dynamique de liaison montante du premier flux de liaison montante et/ou d'une attribution dynamique de liaison descendante au premier flux de liaison descendante sur la première durée d'un décalage prédéfini après la CG.
PCT/CN2022/096981 2022-06-02 2022-06-02 Dispositif et procédé de communication sans fil pour trafic de réalité étendue WO2023231026A1 (fr)

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