WO2023231025A1 - Procédé et dispositif de communication sans fil pour trafic de réalité étendue - Google Patents

Procédé et dispositif de communication sans fil pour trafic de réalité étendue Download PDF

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Publication number
WO2023231025A1
WO2023231025A1 PCT/CN2022/096980 CN2022096980W WO2023231025A1 WO 2023231025 A1 WO2023231025 A1 WO 2023231025A1 CN 2022096980 W CN2022096980 W CN 2022096980W WO 2023231025 A1 WO2023231025 A1 WO 2023231025A1
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Prior art keywords
uplink
stream
enhanced
transmission
grant
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PCT/CN2022/096980
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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/CN2022/096980 priority Critical patent/WO2023231025A1/fr
Publication of WO2023231025A1 publication Critical patent/WO2023231025A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/115—Grant-free or autonomous transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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
  • XR extended reality
  • 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
  • XR extended reality
  • 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:
  • An uplink transmission method for enhanced uplink scheduling (or uplink grant) which can improve capacity of NR and reduce power consumption of UE on top of DRX functionality;
  • BSR buffer status reporting
  • 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 an example of an XR service with more streams processed by the method.
  • FIG. 9 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. 10 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 configure 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) .
  • CG enhanced configured grant
  • XR extended reality
  • the gNB 20 executes the wireless communication method to configure the first enhanced configured grant (CG) for the first uplink stream of the XR service, wherein the first uplink stream belongs to a first type of XR stream in the XR service (B102) .
  • CG first enhanced configured grant
  • 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 status reporting in 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 whether the gNB 20 receives the uplink transmission which comprise uplink data and/or status reporting for the first uplink stream 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 in a first time frame a predefined offset after receiving the uplink transmission for the first uplink stream on the CG belonging to the enhanced configured grant according to the received the status reporting for the first uplink stream on the CG belonging to the first enhanced configured grant (B106) .
  • the first time frame 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 in the first time frame a predefined offset after the uplink transmission for the first uplink stream on the CG belonging to the enhanced configured grant (A106) .
  • the first time frame 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.
  • the first time frame 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 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 a second enhanced configured grant, wherein periodicity of the second downlink stream is synchronizable with periodicity of the second uplink stream.
  • the gNB 20 further configures the second enhanced configured grant (CG) for the 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 enhanced configured grant, 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 status reporting in 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 which comprises uplink data and/or status reporting 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 in a second time frame a predefined offset after receiving the uplink transmission for the second uplink stream on the CG belonging to the enhanced configured grant according to the received the status reporting for the first uplink stream on the CG belonging to the second enhanced configured grant.
  • the second time frame 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 in the second time frame a predefined offset after the uplink transmission for the second uplink stream on the CG belonging to the enhanced configured grant.
  • the second time frame 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.
  • the second time frame 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 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 the 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:
  • 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.
  • the traffic data in an uplink XR stream (referred to as uplink traffic data in the following) is generated at UE (e.g., the UE 10) and has no jitter and transport delay.
  • the traffic data in an uplink XR stream can be scheduled timely and with a more predictable mechanism.
  • configured grant CG
  • any uplink transmission over CG including retransmissions, can only be scheduled in the subsequent DRX active time which is usually much more delayed from a CG occasion of the CG. The delayed time is not acceptable for XR service.
  • 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
  • ⁇ gNB configures one or more CGs to UE, one or more CGs are configured as enhanced CGs, the other CGs are configured as normal CGs which are defined as that in current 3GPP specifications.
  • enhanced CG For each enhanced CG:
  • the gNB configures a duration and a time offset to control UE to monitor PDCCH to receive the subsequent uplink dynamic grant in RRC connected state.
  • ⁇ gNB receives uplink scheduling request from UE by one or more enhanced CGs.
  • gNB After receiving the scheduling request from UE and waiting a period defined by the time offset following the reception of the scheduling request, gNB transmits uplink dynamic grant to UE during the duration.
  • ⁇ gNB may transmits one or more uplink dynamic grant, each uplink dynamic grant may include one or more PUSCH resources for one or more TBs transmission.
  • ⁇ gNB receives uplink traffic data from UE on PUSCH according to the uplink dynamic grant.
  • ⁇ gNB receives uplink traffic data from UE by the one or more normal CGs according to the procedure in current 3GPP standards if having one or more normal CGs configured.
  • ⁇ UE receives the configurations of one or more CGs from gNB, one or more CGs are configured as enhanced CGs, the other CGs are configured as normal CGs which are defined as that in current 3GPP specifications.
  • enhanced CG For each enhanced CG:
  • ⁇ UE transmits uplink scheduling request to gNB by one or more enhanced CGs.
  • UE After transmitting the scheduling request and waiting a period defined by the time offset following the transmission of the scheduling request, UE starts monitoring the PDCCH during the duration;
  • ⁇ UE receives uplink dynamic grant from gNB during the duration.
  • ⁇ UE may receive one or more uplink dynamic grant; each uplink dynamic grant may include one or more PUSCH resources for one or more TBs transmission.
  • ⁇ UE transmits uplink traffic data to gNB on PUSCH according to the uplink dynamic grant.
  • ⁇ UE transmits uplink traffic data to gNB by the one or more normal CGs according to the procedure in current 3GPP standards if being provided one or more normal CGs configured.
  • DRX functionality is one essential configuration for UE power saving in radio resource control (RRC) connected state. Some embodiments of the disclosed method enhance the traffic of XR service on top of DRX functionality.
  • 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.
  • the XR traffic of an XR service is modeled as only one stream, and all data transmissions of the XR traffic have the same or similar periodicity.
  • the traffic of the XR service is illustrated as one stream model for AR UL in the agreed traffic models (options) for XR service in the Rel 17 XR SI in 3GPP RAN1.
  • 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 CG1 as an enhanced CG 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 periodically or quasi-periodically on the CG1.
  • the BSR may comprise enhanced BSR.
  • the radio resource configured for CG1 should be sufficient to transmit the BSR for XR traffic
  • the traffic data may be traffic data of the XR service.
  • the gNB 20 After receiving the BSR from the UE 10 and waiting a period defined by the time offset “Predefined offset” following the reception of the BSR, the gNB 20 allocates PUSCH radio resources using a dynamic grant (referred to as DG1) and transmits the DG1 to the UE 10 through PDCCH before the timer “subsequentDynamicTimer” expires.
  • DG1 dynamic grant
  • the PUSCH radio resources can be allocated according to the BSR received on CG1.
  • the 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) over the dynamic grant.
  • s PUSCH transmission
  • TBs transport blocks
  • Additional one or more radio resources and/or one or more dynamic grants can be allocated and provided to the UE 10 for transmission of additional traffic data of the XR service after the transmission of the first dynamic grant is ended.
  • the UE 10 After transmission on the CG1 and waiting a period defined by the time offset “Predefined offset” following the transmission on the CG1, the UE 10 starts monitoring PDCCH to receive uplink dynamic grant (or dynamic schedule) and starts the timer “subsequentDynamicTimer” simultaneously with an initial value that is provided according to the configured value.
  • the time frame timed by the timer “subsequentDynamicTimer” (i.e., a period when the timer “subsequentDynamicTimer” is running) can be a portion of the Active Time (i.e., onDuration timed by drx-onDurationTimer) for the DRX functionality.
  • the UE 10 continues to monitor PDCCH or not depends on Active Time for the DRX functionality. Specifically, for example, if the Active Time is also ended when the timer expires, the UE 10 stops monitoring PDCCH; if the Active Time is not ended when the timer expires, the UE 10 continues to monitor PDCCH.
  • the UE 10 transmits uplink traffic data of the XR service (i.e., uplink traffic data of one stream of the XR service) on PUSCH according to the one or more dynamic grants received on PDCCH.
  • uplink traffic data of the XR service i.e., uplink traffic data of one stream of the XR service
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • CG1 is configured as a normal CG while CG2 is configured as an enhanced CG, and a timer is configured for CG2.
  • XR traffic of an XR service is modeled as two streams referred to as stream 1 and stream 2, where:
  • ⁇ stream 1 has a stable data rate
  • ⁇ stream 2 has 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.
  • the gNB 20 configures CG1 as a normal CG for stream 1 and CG2 as an enhanced CG for stream 2 to the UE 10.
  • CG1 a normal CG for stream 1
  • CG2 a normal CG for stream 2
  • enhanced CG2 For enhanced CG2:
  • the gNB 20 configures a duration timed by a timer which is referred to as subsequentDynamicTimer for CG2, and 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 UE 10 transmits the data to the gNB 20 on CG1 periodically with the periodicity P1 or quasi-periodically according to the procedure in current 3GPP standards;
  • the UE 10 transmits BSR to the gNB 20 periodically with the periodicity P2 or quasi-periodically on CG2.
  • the BSR may comprise enhanced BSR.
  • the radio resource configured for CG2 should be sufficient to transmit the BSR for stream 2 of XR traffic of the XR service;
  • the traffic data may be traffic data of the XR service.
  • the gNB 20 After receiving the BSR from the UE 10 and waiting a period defined by the time offset “Predefined offset” following the reception of the BSR, the gNB 20 allocates PUSCH radio resources using a dynamic grant (referred to as DG2) for stream 2 and transmits the DG2 to the UE 10 through PDCCH before the timer “subsequentDynamicTimer” expires.
  • DG2 dynamic grant
  • the PUSCH radio resources can be allocated according to the BSR received on CG2.
  • the 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) over the dynamic grant.
  • s PUSCH transmission
  • TBs transport blocks
  • Additional one or more radio resources and/or one or more dynamic grants can be allocated and provided to the UE 10 for transmission of additional traffic data after the transmission of the first dynamic grant is ended.
  • the traffic data may be traffic data of the stream 2 of the XR service.
  • the UE 10 After transmission on the CG2 and waiting a period defined by the time offset “Predefined offset” following the transmission on the CG2, the UE 10 starts monitoring PDCCH to receive uplink dynamic grant (or dynamic schedule) and starts the timer “subsequentDynamicTimer” simultaneously with an initial value that is provided according to the configured value.
  • the time frame timed by the timer “subsequentDynamicTimer” (i.e., a period when the timer “subsequentDynamicTimer” is running) can be a portion of the Active Time for the DRX functionality. Whether the UE 10 continues to monitor PDCCH or not depends on Active Time for the DRX functionality. Specifically, for example, if the Active Time is also ended when the timer expires, the UE 10 stops monitoring PDCCH; if the Active Time is not ended when the timer expires, the UE 10 continues to monitor PDCCH.
  • the UE 10 transmits uplink traffic data of the stream 2 on PUSCH according to the one or more dynamic grants received on PDCCH.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • CG1 and CG3 are configured as normal CGs
  • CG2 is configured as an enhanced CG
  • a timer is configured for CG2.
  • the XR traffic of an XR service is modeled as three streams referred to as stream 1, stream2, and stream3, where:
  • ⁇ stream 1 has a stable data rate
  • ⁇ stream 2 has a variable data rate
  • ⁇ stream 3 has a stable data rate.
  • the stream 1 may be a stream of pose/control;
  • stream 2 may be a stream of aggregating streams of scene, and video;
  • stream 3 may be a stream aggregating streams of audio and data.
  • 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 CG1 and CG3 as normal CG for stream 1 and stream 3 respectively and configures CG2 as an enhanced CG for stream 2 to the UE 10.
  • CG1 and CG3 as normal CG for stream 1 and stream 3 respectively and configures CG2 as an enhanced CG for stream 2 to the UE 10.
  • enhanced CG2 For enhanced CG2:
  • 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 UE 10 transmits the traffic data of stream 1 to the gNB 20 on CG1 periodically with the periodicity P1 or quasi-periodically according to the procedure in current 3GPP standards.
  • the UE 10 transmits the traffic data of stream 3 to the gNB 20 on CG3 periodically with the periodicity P3 or quasi-periodically according to the procedure in current 3GPP standards.
  • the UE 10 transmits BSR to the gNB 20 periodically with the periodicity P2 or quasi-periodically on CG2.
  • the BSR may comprise enhanced BSR.
  • the radio resource configured for CG2 should be sufficient to transmit the BSR for stream 2 of XR traffic of the XR service;
  • the gNB 20 After receiving the BSR from the UE 10 and waiting a period defined by the time offset “Predefined offset” , the gNB 20 allocates PUSCH radio resources using a dynamic grant (referred to as DG2) for stream 2 and transmits the DG2 to the UE 10 through PDCCH before the timer “subsequentDynamicTimer” expires.
  • DG2 dynamic grant
  • the PUSCH radio resources can be allocated according to the BSR received on CG2.
  • the 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) over the dynamic grant.
  • s PUSCH transmission
  • TBs transport blocks
  • Additional one or more radio resources and/or one or more dynamic grants can be allocated and provided to the UE 10 for transmission of additional traffic data after the transmission of the first dynamic grant is ended.
  • the additional traffic data may be traffic data of the stream 2 of the XR service.
  • the UE 10 After transmission on the CG2 and waiting a period defined by the time offset “Predefined offset” following the transmission on the CG2, the UE 10 starts monitoring PDCCH to receive uplink dynamic grant (or dynamic schedule) and starts the timer “subsequentDynamicTimer” simultaneously with an initial value that is provided according to the configured value.
  • the time frame timed by the timer “subsequentDynamicTimer” (i.e., a period when the timer “subsequentDynamicTimer” is running) can be a portion of the Active Time for the DRX functionality. Whether the UE 10 continues to monitor PDCCH or not depends on Active Time for the DRX functionality. Specifically, for example, if the Active Time is also ended when the timer expires, the UE 10 stops monitoring PDCCH; if the Active Time is not ended when the timer expires, the UE 10 continues to monitor PDCCH.
  • the UE 10 transmits uplink traffic data of the stream 2 on PUSCH according to the one or more dynamic grants received on PDCCH.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • 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.
  • the XR traffic of an XR service is modeled as three streams referred to as stream 1, stream2, and stream3, where:
  • ⁇ stream 1 has a stable data rate
  • ⁇ stream 2 has a variable data rate
  • ⁇ stream 3 has a variable data rate.
  • the stream 1 may be a stream of pose/control
  • stream 2 may be an I-stream for video
  • stream 3 may be a P-stream for video.
  • 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 CG1 as a normal CG for stream 1, configures CG2 as an enhanced CG for stream 2, and configures CG3 as an enhanced CG for stream 3 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 the traffic data to the gNB 20 on CG1 periodically with the periodicity P1 or quasi-periodically according to the procedure in current 3GPP standards.
  • the UE 10 transmits BSR (referred to as BSR1) to the gNB 20 periodically with the periodicity P2 or quasi-periodically on CG2.
  • BSR may comprise enhanced BSR.
  • the radio resource configured for CG2 should be sufficient to transmit the BSR1 for stream 2 of XR traffic of the XR service;
  • the traffic data may be traffic data of the stream 2 of the XR service.
  • the gNB 20 After receiving the BSR from the UE 10 and waiting a period defined by the time offset “Predefined offset1” following the reception of the BSR, the gNB 20 allocates PUSCH radio resources using a dynamic grant (referred to as DG2) for stream 2 and transmits the DG2 to the UE 10 through PDCCH before the timer “subsequentDynamicTimer1” expires.
  • DG2 dynamic grant
  • the PUSCH radio resources can be allocated according to the BSR1 received on CG2.
  • the 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) over the dynamic grant.
  • s PUSCH transmission
  • TBs transport blocks
  • Additional one or more radio resources and/or one or more dynamic grants can be allocated and provided to the UE 10 for transmission of additional traffic data after the transmission of the first dynamic grant is ended.
  • the additional traffic data may be traffic data of the stream 2 the XR service.
  • the UE 10 After transmission on the CG2 and waiting a period defined by the time offset “Predefined offset1” following the transmission on the CG2, the UE 10 starts monitoring PDCCH to receive uplink dynamic grant (or dynamic schedule) and starts the timer “subsequentDynamicTimer1” simultaneously with an initial value that is provided according to the configured value.
  • the time frame timed by the timer “subsequentDynamicTimer1” (i.e., a period when the timer “subsequentDynamicTimer1” is running) can be a portion of the Active Time for the DRX functionality. Whether the UE 10 continues to monitor PDCCH or not depends on Active Time for the DRX functionality. Specifically, for example, if the Active Time is also ended when the timer expires, the UE 10 stops monitoring PDCCH; if the Active Time is not ended when the timer expires, the UE 10 continues to monitor PDCCH.
  • the UE 10 transmits uplink traffic data of the stream 2 on PUSCH according to the received dynamic grants (referred to as DG2) on PDCCH.
  • DG2 received dynamic grants
  • the UE 10 transmits BSR (referred to as BSR2) to the gNB 20 periodically with the periodicity P3 or quasi-periodically on CG3.
  • BSR may comprise enhanced BSR.
  • the radio resource configured for CG3 should be sufficient to transmit the BSR for stream 3 of XR traffic;
  • the gNB 20 After receiving the BSR from the UE 10 and waiting a period defined by the time offset “Predefined offset2” following the reception of the BSR, the gNB 20 allocates PUSCH radio resources using a dynamic grant (referred to as DG3) for stream 3 and transmits the DG3 to the UE 10 through PDCCH before the timer “subsequentDynamicTimer2” expires.
  • DG3 dynamic grant
  • the PUSCH radio resources can be allocated according to the BSR2 received on CG3.
  • the 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) over the dynamic grant.
  • s PUSCH transmission
  • TBs transport blocks
  • Additional one or more radio resources and/or one or more dynamic grants can be allocated and provided to the UE 10 for transmission of additional traffic data after the transmission of the first dynamic grant is ended.
  • the additional traffic data may be traffic data of the stream 3 of the XR service.
  • the UE 10 After transmission on the CG3 and waiting a period defined by the time offset “Predefined offset2” following the transmission on the CG3, the UE 10 starts monitoring PDCCH to receive uplink dynamic grant (or dynamic schedule) and starts the timer “subsequentDynamicTimer2” simultaneously with an initial value that is provided according to the configured value.
  • the time frame timed by the timer “subsequentDynamicTimer2” (i.e., a period when the timer “subsequentDynamicTimer2” is running) can be a portion of the Active Time for the DRX functionality. Whether the UE 10 continues to monitor PDCCH or not depends on Active Time for the DRX functionality. Specifically, for example, if the Active Time is also ended when the timer expires, the UE 10 stops monitoring PDCCH; if the Active Time is not ended when the timer expires, the UE 10 continues to monitor PDCCH.
  • the UE 10 transmits uplink traffic data of the stream 3 on PUSCH according to the received dynamic grants (referred to as DG3) on PDCCH.
  • DG3 received dynamic grants
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • an additional timer can be introduced according to which the UE 10 can monitor PDCCH and 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 frame 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
  • XR service is a real-time service and requires high data rate and low latency. Moreover, XR service may consist of multiple traffic flows with different QoS requirements. Information about the traffic characteristic of the XR service can assist the gNB 20 to schedule radio resources for transmission of the traffic data according to the committed QoS. Some of such kind of information varies with time and thus is more suitable to be delivered through a user plane. BSR is reported per logical channel group (LCG) . For the uplink, enhancement to the current mechanism of BSR to enable reporting such varying information from the UE 10 to the gNB 20 is very beneficial since the UE 10 has full knowledge of such information.
  • LCG logical channel group
  • enhancement can include:
  • one or more of the following information can be included in the BSR, or an index of a pattern which combines one or more of the following information can be included in the BSR:
  • LCGs logical channel groups
  • IP Internet protocol
  • a packet delay budget (PDB) for a set of packets in one of the uplink streams such as PDB or similar parameters for each packet or for some groups of packets or for all the packets as a whole.
  • the stream traffic usually is segmented and encapsulated in one or more packet.
  • ⁇ The headroom of a downlink de-jitter buffer for the same service (e.g., the XR service) or application.
  • the mobility information includes the speed, direction of UE motion of a UE (e.g., the UE 10) .
  • An enhanced BSR especially a periodic or quasi-periodical enhanced BSR, can be configured with uplink radio resource in a CG and transmitted in the configured CG preferentially.
  • Calculation of the data volume may be referenced in 3GPP TS 38.322 and TS 38.323.
  • data volume reported in 5-bit buffer size field of BSR is an index representing a buffer size levels in bytes. Each of the buffer size levels is range of buffer size in bytes.
  • the enhancement to BSR may comprise enhancement to buffer size reporting.
  • a data volume reported in a buffer size field of BSR may be an exact data volume available in a buffer for transmission rather than an index, and the buffer size field of BSR may be greater than 5 bits.
  • the packets may be packets generated from segmentation of frames in the XR service.
  • a burst of packets may comprise packets generated from segmentation of one frame in the XR service.
  • the position or mobility information may comprise a position or mobility information of the UE 10.
  • FIG. 10 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. 10 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La divulgation concerne un procédé de communication sans fil, exécutable dans un dispositif de communication sans fil. Le dispositif configure une première autorisation de configuration (CG) améliorée pour un premier flux de liaison montante d'un service de réalité étendue (XR). Le dispositif effectue une transmission de liaison montante pour le premier flux de liaison montante sur une CG appartenant à la première autorisation de configuration améliorée. Le dispositif surveille un canal de commande pour recevoir une autorisation dynamique de liaison montante pour le premier flux de liaison montante dans la première trame temporelle, avec un décalage prédéfini après la CG.
PCT/CN2022/096980 2022-06-02 2022-06-02 Procédé et dispositif de communication sans fil pour trafic de réalité étendue WO2023231025A1 (fr)

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Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2022025425A1 (fr) * 2020-07-27 2022-02-03 Lg Electronics Inc. Procédé et appareil de transmission de données en liaison montante à base de multiples attributions configurées dans un système de communication sans fil
WO2022084525A1 (fr) * 2020-10-23 2022-04-28 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et appareils pour une meilleure autorisation configurée pour des applications à faible latence

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Publication number Priority date Publication date Assignee Title
WO2022025425A1 (fr) * 2020-07-27 2022-02-03 Lg Electronics Inc. Procédé et appareil de transmission de données en liaison montante à base de multiples attributions configurées dans un système de communication sans fil
WO2022084525A1 (fr) * 2020-10-23 2022-04-28 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et appareils pour une meilleure autorisation configurée pour des applications à faible latence

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CATT: "NR enhancement for XR capacity improvement", 3GPP TSG RAN WG1 #109-E R1-2203485, 29 April 2022 (2022-04-29), XP052153014 *
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