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WO2025233209A1 - Procédés, dispositifs de communication et équipement d'infrastructure - Google Patents

Procédés, dispositifs de communication et équipement d'infrastructure

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Publication number
WO2025233209A1
WO2025233209A1 PCT/EP2025/061915 EP2025061915W WO2025233209A1 WO 2025233209 A1 WO2025233209 A1 WO 2025233209A1 EP 2025061915 W EP2025061915 W EP 2025061915W WO 2025233209 A1 WO2025233209 A1 WO 2025233209A1
Authority
WO
WIPO (PCT)
Prior art keywords
uplink data
logical channels
data associated
communications device
transmit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/061915
Other languages
English (en)
Inventor
Yassin Aden Awad
Vivek Sharma
Yuxin Wei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Europe BV United Kingdom Branch
Sony Group Corp
Original Assignee
Sony Europe Ltd
Sony Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Europe Ltd, Sony Group Corp filed Critical Sony Europe Ltd
Publication of WO2025233209A1 publication Critical patent/WO2025233209A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

Definitions

  • the present disclosure relates to communications devices, infrastructure equipment and methods for the transmission and/or reception of data by a communications device in a wireless communications network.
  • Previous generation mobile telecommunication systems such as those based on the 3GPP defined UMTS and Long Term Evolution (LTE) architecture, are able to support a wider range of services than simple voice and messaging services offered by previous generations of mobile telecommunication systems.
  • LTE Long Term Evolution
  • a user is able to enjoy high data rate applications such as mobile video streaming and mobile video conferencing that would previously only have been available via a fixed line data connection.
  • the demand to deploy such networks is therefore strong and the coverage area of these networks, i.e. geographic locations where access to the networks is possible, is expected to continue to increase rapidly.
  • Current and future wireless communications networks are expected to routinely and efficiently support communications with an ever-increasing range of devices associated with a wider range of data traffic profiles and types than existing systems are optimised to support.
  • it is expected future wireless communications networks will be expected to efficiently support communications with devices including reduced complexity devices, machine type communication (MTC) devices, high resolution video displays, virtual reality headsets, extended Reality (XR) and so on.
  • MTC machine type communication
  • XR extended Reality
  • Some of these different types of devices may be deployed in very large numbers, for example low complexity devices for supporting the “The Internet of Things”, and may typically be associated with the transmissions of relatively small amounts of data with relatively high latency tolerance.
  • Other types of device for example supporting high-definition video streaming, may be associated with transmissions of relatively large amounts of data with relatively low latency tolerance.
  • Other types of device may be characterised by data that should be transmitted through the network with low latency and high reliability.
  • a single device type might also be associated with different traffic profiles / characteristics depending on the application(s) it is running. For example, different consideration may apply for efficiently supporting data exchange with a smartphone when it is running a video streaming application (high downlink data) as compared to when it is running an Internet browsing application (sporadic uplink and downlink data) or being used for voice communications by an emergency responder in an emergency scenario (data subject to stringent reliability and latency requirements).
  • Ultra Reliable Low Latency Communications URLLC
  • URLLC Ultra Reliable Low Latency Communications
  • XR extended Reality
  • XR combines real- world and virtual environments, incorporating aspects such as augmented reality (AR), mixed reality (MR), and virtual reality (VR), and thus requires high quality and minimised interaction delay.
  • Services such as URLLC and XR therefore represent a challenging example for both LTE type communications systems and 5G/NR communications systems, as well as future generation communications systems.
  • 5G NR has continuously evolved and the current work plan includes 5G-NR-advanced in which some further enhancements are expected, especially to support new use-cases/scenarios with higher requirements.
  • the desire to support these new use-cases and scenarios gives rise to new challenges for efficiently handling communications in wireless communications systems that need to be addressed.
  • the present disclosure can help address or mitigate at least some of the issues discussed above.
  • Some embodiments of the present technique can provide a method of operating a communications device configured to transmit signals to and/or to receive signals from a wireless communications network via a wireless access interface.
  • the method comprises determining that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network, determining that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, and transmitting the uplink data associated with the one or more logical channels to the wireless communications network without performing any retransmissions of the uplink data associated with the one or more logical channels.
  • Such embodiments of the present technique which, in addition to methods of operating communications devices, relate to methods of operating infrastructure equipment, communications devices and infrastructure equipment, circuitry for communications devices and infrastructure equipment, wireless communications systems, computer programs, and computer-readable storage mediums, can allow for the more efficient and effective use of radio resources by a communications device operating in a wireless communications network.
  • Figure 1 schematically represents some aspects of an LTE-type wireless telecommunication system which may be configured to operate in accordance with certain embodiments of the present disclosure
  • Figure 2 schematically represents some aspects of an NR-type wireless telecommunications system which may be configured to operate in accordance with certain embodiments of the present disclosure
  • Figure 3 is a schematic block diagram of an example infrastructure equipment and communications device which may be configured to operate in accordance with certain embodiments of the present disclosure
  • Figure 4 is reproduced from [8], and illustrates a traffic model for extended Reality (XR);
  • Figure 5 shows a part schematic, part message flow diagram representation of a first wireless communications system comprising a communications device and an infrastructure equipment in accordance with embodiments of the present technique
  • Figure 6 illustrates an example of how a gNB can schedule a UE to transmit critical data with a low remaining time in accordance with embodiments of the present technique
  • FIG. 7 illustrates how uplink control information (UCI) can indicate whether associated uplink data is transmitted in accordance with retransmissions or not in accordance with embodiments of the present technique
  • Figure 8 shows a flow diagram illustrating a second example process of communications in a communications system in accordance with embodiments of the present technique.
  • Figure 1 provides a schematic diagram illustrating some basic functionality of a mobile telecommunications network / system 6 operating generally in accordance with LTE principles, but which may also support other radio access technologies, and which may be adapted to implement embodiments of the disclosure as described herein.
  • Various elements of Figure 1 and certain aspects of their respective modes of operation are well-known and defined in the relevant standards administered by the 3GPP (RTM) body, and also described in many books on the subject, for example, Holma H.
  • the network 6 includes a plurality of base stations 1 connected to a core network 2. Each base station provides a coverage area 3 (i.e. a cell) within which data can be communicated to and from communications devices 4. Although each base station 1 is shown in Figure 1 as a single entity, the skilled person will appreciate that some of the functions of the base station may be carried out by disparate, inter-connected elements, such as antennas (or antennae), remote radio heads, amplifiers, etc. Collectively, one or more base stations may form a radio access network.
  • Data is transmitted from base stations 1 to communications devices 4 within their respective coverage areas 3 via a radio downlink (DL).
  • Data is transmitted from communications devices 4 to the base stations 1 via a radio uplink (UL).
  • the core network 2 routes data to and from the communications devices 4 via the respective base stations 1 and provides functions such as authentication, mobility management, charging and so on.
  • Terminal devices may also be referred to as mobile stations, user equipment (UE), user terminal, mobile radio, communications device, and so forth.
  • Services provided by the core network 2 may include connectivity to the internet or to external telephony services.
  • the core network 2 may further track the location of the communications devices 4 so that it can efficiently contact (i.e. page) the communications devices 4 for transmitting downlink data towards the communications devices 4.
  • Base stations which are an example of network infrastructure equipment, may also be referred to as transceiver stations, nodeBs, e-nodeBs, eNB, g-nodeBs, gNB and so forth.
  • nodeBs nodeBs
  • e-nodeBs nodeBs
  • eNB nodeB
  • g-nodeBs gNodeBs
  • FIG. 2 An example configuration of a wireless communications network which uses some of the terminology proposed for and used in NR and 5G is shown in Figure 2.
  • a plurality of transmission and reception points (TRPs) 10 are connected to distributed control units (DUs) 41, 42 by a connection interface represented as a line 16.
  • Each of the TRPs 10 is arranged to transmit and receive signals via a wireless access interface within a radio frequency bandwidth available to the wireless communications network.
  • each of the TRPs 10 forms a cell of the wireless communications network as represented by a circle 12.
  • wireless communications devices 14 which are within a radio communications range provided by the cells 12 can transmit and receive signals to and from the TRPs 10 via the wireless access interface.
  • Each of the distributed units 41, 42 are connected to a central unit (CU) 40 (which may be referred to as a controlling node) via an interface 46.
  • the central unit 40 is then connected to the core network 20 which may contain all other functions required to transmit data for communicating to and from the wireless communications devices and the core network 20 may be connected to other networks 30.
  • the elements of the wireless access network shown in Figure 2 may operate in a similar way to corresponding elements of an LTE network as described with regard to the example of Figure 1. It will be appreciated that operational aspects of the telecommunications network represented in Figure 2, and of other networks discussed herein in accordance with embodiments of the disclosure, which are not specifically described (for example in relation to specific communication protocols and physical channels for communicating between different elements) may be implemented in accordance with any known techniques, for example according to currently used approaches for implementing such operational aspects of wireless telecommunications systems, e.g. in accordance with the relevant standards.
  • the TRPs 10 of Figure 2 may in part have a corresponding functionality to a base station or eNodeB of an LTE network.
  • the communications devices 14 may have a functionality corresponding to the UE devices 4 known for operation with an LTE network.
  • operational aspects of a new RAT network may be different to those known from LTE or other known mobile telecommunications standards.
  • each of the core network component, base stations and communications devices of a new RAT network will be functionally similar to, respectively, the core network component, base stations and communications devices of an LTE wireless communications network.
  • the core network 20 connected to the new RAT telecommunications system represented in Figure 2 may be broadly considered to correspond with the core network 2 represented in Figure 1, and the respective central units 40 and their associated distributed units / TRPs 10 may be broadly considered to provide functionality corresponding to the base stations 1 of Figure 1.
  • the term network infrastructure equipment / access node may be used to encompass these elements and more conventional base station type elements of wireless telecommunications systems.
  • the responsibility for scheduling transmissions which are scheduled on the radio interface between the respective distributed units and the communications devices may lie with the controlling node / central unit and / or the distributed units / TRPs.
  • a communications device 14 is represented in Figure 2 within the coverage area of the first communication cell 12. This communications device 14 may thus exchange signalling with the first central unit 40 in the first communication cell 12 via one of the distributed units / TRPs 10 associated with the first communication cell 12.
  • Figure 2 represents merely one example of a proposed architecture for a new RAT based telecommunications system in which approaches in accordance with the principles described herein may be adopted, and the functionality disclosed herein may also be applied in respect of wireless telecommunications systems having different architectures.
  • certain embodiments of the disclosure as discussed herein may be implemented in wireless telecommunication systems / networks according to various different architectures, such as the example architectures shown in Figures 1 and 2. It will thus be appreciated the specific wireless telecommunications architecture in any given implementation is not of primary significance to the principles described herein.
  • certain embodiments of the disclosure may be described generally in the context of communications between network infrastructure equipment / access nodes and a communications device, wherein the specific nature of the network infrastructure equipment / access node and the communications device will depend on the network infrastructure for the implementation at hand.
  • the network infrastructure equipment / access node may comprise a base station, such as an LTE-type base station 1 as shown in Figure 1 which is adapted to provide functionality in accordance with the principles described herein, and in other examples the network infrastructure equipment may comprise a control unit / controlling node 40 and / or a TRP 10 of the kind shown in Figure 2 which is adapted to provide functionality in accordance with the principles described herein.
  • a base station such as an LTE-type base station 1 as shown in Figure 1 which is adapted to provide functionality in accordance with the principles described herein
  • the network infrastructure equipment may comprise a control unit / controlling node 40 and / or a TRP 10 of the kind shown in Figure 2 which is adapted to provide functionality in accordance with the principles described herein.
  • a TRP 10 as shown in Figure 2 comprises, as a simplified representation, a wireless transmitter 30, a wireless receiver 32 and a controller or controlling processor 34 which may operate to control the transmitter 30 and the wireless receiver 32 to transmit and receive radio signals to one or more UEs 14 within a cell 12 formed by the TRP 10.
  • an example UE 14 is shown to include a corresponding transmitter 49, a receiver 48 and a controller 44 which is configured to control the transmitter 49 and the receiver 48 to transmit signals representing uplink data to the wireless communications network via the wireless access interface formed by the TRP 10 and to receive downlink data as signals transmitted by the transmitter 30 and received by the receiver 48 in accordance with the conventional operation.
  • the transmitters 30, 49 and the receivers 32, 48 may include radio frequency filters and amplifiers as well as signal processing components and devices in order to transmit and receive radio signals in accordance for example with the 5G/NR standard.
  • the controllers 34, 44 (as well as other controllers described in relation to examples and embodiments of the present disclosure) may be, for example, a microprocessor, a CPU, or a dedicated chipset, etc., configured to carry out instructions which are stored on a computer readable medium, such as a non-volatile memory.
  • the processing steps described herein may be carried out by, for example, a microprocessor in conjunction with a random access memory, operating according to instructions stored on a computer readable medium.
  • the transmitters, the receivers and the controllers are schematically shown in Figure 3 as separate elements for ease of representation. However, it will be appreciated that the functionality of these elements can be provided in various different ways, for example using one or more suitably programmed programmable computer(s), or one or more suitably configured application-specific integrated circuit(s) / circuitry / chip(s) / chipset(s).
  • the infrastructure equipment / TRP / base station as well as the UE / communications device will in general comprise various other elements associated with its operating functionality.
  • the TRP 10 also includes a network interface 50 which connects to the DU 42 via a physical interface 16.
  • the network interface 50 therefore provides a communication link for data and signalling traffic from the TRP 10 via the DU 42 and the CU 40 to the core network 20.
  • HARQ Hybrid Automatic Repeat Request
  • physical channels carrying data such as Physical Downlink Shared Channels (PDSCHs) and Physical Uplink Shared Channels (PUSCHs).
  • PDSCHs Physical Downlink Shared Channels
  • PUSCHs Physical Uplink Shared Channels
  • HARQ transmissions consist, after the initial transmission of the physical channels carrying the data, of HARQ feedback from the receiver and, if necessary, retransmissions from the transmitter.
  • an initial transmission of a physical channel may be transmitted to a receiver, and the receiver would feed back an ACK if it successfully decodes the physical channel, or otherwise it feeds back a NACK.
  • a retransmission of the physical channel may be transmitted to the receiver if the HARQ feedback for the previous or initial transmission was a NACK, and here, the receiver would soft-combine the logarithmic likelihood ratio (EUR) soft bits of the retransmitted physical channel with all previous transmissions of the same physical channel. This would thereby increase the signal -to-noise ratio (SNR) of the transmission, and after the soft combining, the receiver then attempts to decode the transmission again.
  • SNR signal -to-noise ratio
  • Massive Machine Type Communications is another example of a service which may be supported by NR-based communications networks.
  • systems may be expected to support further enhancements related to Industrial Internet of Things (IIoT) in order to support services with new requirements of high availability, high reliability, low latency, and in some cases, high-accuracy positioning.
  • IIoT Industrial Internet of Things
  • Enhanced URLLC [3, 4] specifies features that require high reliability and low latency, such as factory automation, transport industry, electrical power distribution, etc. It should be appreciated that the Uplink Control Information (UCI) for URLLC and eMBB will have different requirements.
  • UCI Uplink Control Information
  • NR-U Unlicensed Spectrum
  • LBT Listen Before Talk
  • XR extended Reality
  • Cloud Gaming refer to various types of augmented, virtual, and mixed environments, where human-to-machine and human-to-human communications are performed with the assistance of handheld and wearable end user devices (UEs).
  • UEs handheld and wearable end user devices
  • XR and Cloud Gaming are two more recently developed applications, that are considered important for NR Rel- 18 and beyond (also known as 5G Advanced) [6], The functionalities for the support of XR services require a high data rate and low latency communications.
  • An overview of XR services is available in [7], while the service requirements are documented in [8],
  • XR traffic is rich in video, especially in the downlink, with a typical frame rate of 60 Hz [7], which leads to a data transmission with non-integer periodicity in NR, i.e. the periodicity is not an integer number of subframes and in this example, the periodicity is 16.67 ms.
  • the packet arrival at the gNB may experience random jitter.
  • the non-integer and jitter characteristics of XR traffic is known as quasi-periodic traffic.
  • the packet size also varies within a range; that is the packet size in each period is random.
  • the jitter and random packet size of UL traffic is illustrated in Eigure 4, which is based on a similar figure (figure 5. 1.1-1) in [9],
  • FIG. 4 illustrates a single stream traffic model for XR.
  • a first packet k 51 is transmitted, representing Internet Protocol (IP) packets belonging to video frame k.
  • IP Internet Protocol
  • a second packet k+1 52 is transmitted, representing IP packets belonging to video frame k+1.
  • the variable packet size which follows a probability distribution is shown by arrow 53, while the variable jitter which also follows a probability distribution is denoted by arrow 54.
  • CG-PUSCH Configured Grant PUSCH
  • SPS Semi-Persistent Scheduling
  • PDSCH Physical Downlink Shared Channels
  • TBS Transport Block Size
  • XR the payload of a quasi-periodic traffic may not be the same but instead varies within a particular range.
  • One of the pieces information that an XR device needs to transmit is its position and orientation (which can collectively be referred to as its pose) so that the XR application can determine the position at which the user is located and the direction the user is looking and respond appropriately (i.e. tracking of the XR Viewer pose). For example, if a VR headset displaying a virtual room sends pose information to the XR server suggesting the wearer of that VR headset is looking up, the server would display video of the ceiling of that virtual room rather than the floor. In addition to pose information, there may also be other types of control information that an XR device sends to the server on the uplink.
  • the XR device may transmit video and/or audio data so that it can be used by the counter-part of the XR user (such as the XR application server for example).
  • Video and/or audio data typically require a large data size and are less time-sensitive.
  • pose/control UL transmissions in XR are typically smaller in size and are a more time-sensitive nature.
  • pose/control UL transmission is time-sensitive, if the UL transmission comprising such pose or control information fails, it may not be beneficial to retransmit that information again. For example, if a person looks up and then down, and the pose information when the person looks up fails to reach the server, there is not much benefit of retransmitting it again since by the time it is retransmitted the person may have already looked down and therefore no longer expects to see the ceiling.
  • Most XR video frame rates correspond to periodicities that are not an integer (66.66, 33.33, 22.22, 16.66, 13.88, 11.11 and 8.33 ms respectively).
  • the gNB may configure a discontinuous reception (DRX) cycle expressed in rational numbers so that the DRX cycle matches those periodicities; e.g. for the traffic with a frame rate of 60 fps, the network may configure the UE with a DRX cycle of 50/3 ms.
  • Configured grants may be configured without the need for the UE to monitor possible UL retransmissions (i.e. HARQ Retransmission-less) thus increasing the number of power saving opportunities for the UE.
  • Configured grant-based PUSCH transmission are introduced. This includes support of multiple CG- PUSCH transmission occasions within a single period of a CG configuration and the indication of unused CG-PUSCH occasion(s) of a CG configuration with UCI multiplexed in CG-PUSCH transmission of the CG configuration. Discarding Outdated Packets
  • the UE may be configured with a Protocol Data Unit (PDU) Set-based discard operation for a specific DRB.
  • PDU Protocol Data Unit
  • the UE discards all packets in a PDU set when one PDU belonging to this PDU set is discarded due to expiry of the discard timer.
  • DSR Delay Status Report
  • DSR delay status reporting
  • LCG Logical Channel Group
  • PDCP Packet Data Conversion Protocol
  • SDU Sequence Data Unit
  • the gNB scheduler becomes aware of the existence of critical data with low remaining time, and so the gNB can schedule to the UE by sending a large UL grant so as to ensure that critical data is transmitted before the remaining time expires.
  • RRM Radio Resource Management
  • LCP Logical Channel Prioritization
  • Radio Link Control RLC
  • AM RLC Acknowledged Mode
  • a UE can be configured to send a DSR in respect of its buffered data to the gNB, so as to enable the gNB scheduler to become aware of the existence of critical data with low remaining time.
  • the gNB can therefore schedule a UE for transmission of this critical data by the UE by sending a large UL grant subsequently to receipt of the DSR.
  • the UE After UE receives the large UL grant, it transmits the data belonging to one or more logical channel based on logical channel priorities. However, if the UE sends data via a first transmission where the remaining time of that data is very short, it is not desirable to transmit that data in accordance with HARQ retransmissions, as the data will be outdated (and may be discarded from the UE’s buffers) soon after the first transmission. Obviously, retransmitting outdated data unnecessarily in the air interface will consume a lot of resources, and will impact the system capacity. In addition, and as described above in respect of XR, the UE does not need to monitor for possible UL retransmission grants from the gNB, thus increasing the amount of power saving opportunities for the UE.
  • a technical issue to solve is how to determine at a UE (and/or how to inform a UE by a gNB) that there is no need for HARQ retransmissions in such a case as that described above; i.e. in respect of data with a low remaining time before it becomes out of date.
  • Embodiments of the present technique seek to provide solutions to such a problem.
  • Figure 5 shows a part schematic, part message flow diagram representation of a first wireless communications system comprising a communications device 101 (e.g. a UE 14) and an infrastructure equipment 102 (e.g. a gNB 10) in accordance with at least some embodiments of the present technique.
  • the communications device 101 is configured to transmit signals to and/or receive signals from the wireless communications network, for example, to and from the infrastructure equipment 102.
  • the communications device 101 may be configured to transmit data to and/or receive data from the wireless communications network (e.g. to/from the infrastructure equipment 102) via a wireless radio interface provided by the wireless communications network (e.g. a Uu interface between the communications device 101 and the Radio Access Network (RAN), which includes the infrastructure equipment 102).
  • RAN Radio Access Network
  • Such data transmitted by the communications device 101 may, for example, include data for applications such as XR.
  • the communications device 101 and the infrastructure equipment 102 each comprise a transceiver (or transceiver circuitry) 101.1, 102.1, and a controller (or controller circuitry) 101.2, 102.2.
  • Each of the controllers 101.2, 102.2 may be, for example, a microprocessor, a CPU, or a dedicated chipset, etc.
  • the controllers 101.2, 102.2 may also each be equipped with a memory unit (which is not shown in Figure 5).
  • the transceiver circuitry 101.1 and the controller circuitry 101.2 of the communications device 101 are configured in combination to determine 103 that the communications device 101 has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network (e.g. to the infrastructure equipment 102), to determine 104 that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, and to transmit 105 the uplink data associated with the one or more logical channels (for which the remaining time was determined 104 to be below the preconfigured threshold) to the wireless communications network (e.g. to the infrastructure equipment 102) without performing (or at least, at the time of the initial transmission 105, without expecting to perform) any retransmissions of the uplink data associated with the one or more logical channels.
  • the wireless communications network e.g. to the infrastructure equipment 102
  • the communications device may determine that it should transmit 105 the uplink data associated with the one or more logical channels without performing any retransmissions (i.e. in a retransmission-less manner) independently, based on the determination 104 that the remaining time for those logical channels is below the threshold (i.e. is a low remaining time), or based on receipt of an indication to do so (e.g. in DCI) from the gNB. If the communications device determines that the uplink transmission is retransmission-less, then the UE will not expect any uplink grants for performing retransmissions from the gNB, and so will not monitor for them (e.g. during DRX ON periods).
  • the UE will also not expect to receive (and so will not monitor for) any HARQ acknowledgement from the gNB if no retransmissions of the uplink data are to be performed by the UE after the initial transmission of the uplink data, because the gNB also knows that no retransmissions will be performed (e.g. based on a DSR or uplink control information (UCI) received from the UE) and hence such HARQ acknowledgements would not serve any purpose.
  • a DSR or uplink control information (UCI) received from the UE uplink control information
  • a UE refrains to retransmit PDU data with a low remaining time after the first transmission of that data. That is, if the remaining time of the data in terms the Packet Delay Budget (PDB) is less than a pre-configured time threshold at the time of first transmission, the UE does not perform any retransmissions of that data.
  • PDB Packet Delay Budget
  • This comparison may be determined by the UE itself based on the PDB.
  • the communications device may be configured to determine the remaining time for each of the one or more logical channels based on a Packet Delay Budget, PDB, associated with that logical channel.
  • the uplink data may be transmitted in a PUSCH that is scheduled by the network.
  • a PUSCH that is scheduled by the network.
  • embodiments of the present technique are applicable to other types of uplink transmission, such as CG-PUSCH transmissions for example.
  • the solutions defined by embodiments of the present technique are described as solving problems with transmitting data belonging to delay-intolerant services such as XR, such embodiments of the present technique are more broadly applicable to data belonging to any service (i.e. not just XR) that may become out of date after a certain time.
  • the UE when data arrives at the UE’s buffer, the UE must constantly evaluate the remaining time for that data by comparing it against one or more pre-defined time thresholds. Subsequently, if the UE transmits time-critical data (i.e. as an initial transmission) where the remaining time (i.e. in terms of the PDB) is very short (e.g. 5ms), it may not be possible for the UE to perform HARQ retransmissions of that time-critical data in the event that the gNB does not decode it successfully. This is because by the time the UE receives the grant for the retransmission(s), the PDB has already expired, and hence the time- critical data is outdated.
  • time-critical data i.e. as an initial transmission
  • the remaining time i.e. in terms of the PDB
  • the thresholds may be signalled semi-statically (i.e. in RRC signalling) and may be defined as being from one or more of the values of 5ms, 10ms, 15ms, 20ms.
  • the communications device may be configured to receive, from the wireless communications network (e.g. from the infrastructure equipment), Radio Resource Control, RRC, signalling comprising an indication of the preconfigured threshold. Practically if the remaining time of some uplink data is less than 6ms, the HARQ retransmission of that uplink data cannot be achieved on time, as at least 6ms is needed to complete the retransmission.
  • a UE is configured earlier via RRC signalling to report the delay status of the buffered data (i.e. in a DSR).
  • the communications device may be configured to receive, from the wireless communications network (e.g. from the infrastructure equipment), RRC signalling comprising a configuration for the communications device to transmit a Delay Status Report, DSR, to the wireless communications network.
  • DSR Delay Status Report
  • the UE reports a DSR carrying the delay information of the data in that logical channel.
  • the communications device may be configured to transmit, to the wireless communications network (e.g.
  • the DSR indicates the remaining time for the uplink data associated with each of the one or more logical channels that is below the preconfigured threshold.
  • the gNB is then able to determine that the remaining time associated with uplink data carried by these logical channels is below the configured threshold.
  • Figure 6 shows an example of such arrangements of embodiments of the present technique.
  • the UE 101 - after being configured to do so by the gNB 102 and upon the remaining time of data carried by one or more logical channels falls below the configured threshold - is triggered to send a DSR 110 to the gNB 102.
  • the gNB 102 scheduler After receiving the DSR, the gNB 102 scheduler becomes aware of the existence of critical data with low remaining time, and so the gNB 102 schedules 112 to the UE 101 by sending a large UL grant (i.e. by transmitting a DCI that schedules a PUSCH of sufficient size to carry the critical data before the remaining time expires).
  • the UE 101 organizes its logical channels based on the remaining time of the data carried by them and the configured threshold, and then fills the scheduled PUSCH (i.e. fills the transport block (TB) carried by the PUSCH) with the data with the low remaining time before transmitting 114 the PUSCH to the gNB 102.
  • the scheduled PUSCH i.e. fills the transport block (TB) carried by the PUSCH
  • the PUSCH may therefore be scheduled by the gNB (by a DL grant carried by DCI as noted above) such that it is at least large enough to carry all of the delay critical data for which the remaining time is below the configured threshold. This is determined by the gNB based on the DSR which indicates such a remaining time for the data associated with logical channels that is below the threshold.
  • the DCI may specifically indicate that the PUSCH is to carry the uplink data indicated in the DCI, or may just be scheduled without such an indication, where the gNB has previously configured the UE (e.g. via RRC signalling, which may be the same RRC signalling that configures the UE to transmit a DSR) to transmit such uplink data in the next available scheduled PUSCH after having transmitted a DSR.
  • the communications device may be configured to receive, from the wireless communications network (e.g. from the infrastructure equipment) in response to transmitting the DSR, Downlink Control Information, DCI, indicating a set of uplink resources of the wireless access interface, wherein a size of the indicated set of uplink resources is dependent on the DSR.
  • DCI Downlink Control Information
  • the PUSCH may be scheduled generally with the intention that the UE uses it to transmit the data with the lowest remaining time.
  • the UE may fill the PUSCH based on the priority of the logical channels. That is, in some cases, the UE may include only logical channels that carry data having the same remaining time threshold in the PUSCH. However, in other cases, the UE may include uplink data from further logical channels with a next priority level, for which the remaining time may not yet be below the threshold).
  • the gNB could provide separate grants to the UE (both carried by the same DCI or scheduled separately) for transmitting delay critical and non-delay critical data respectively in separate PUSCHs.
  • the gNB can receive the first transmission of the critical data if decoded successfully without also having to potentially successfully decode any non-critical data.
  • the UE fills the PUSCH/TBs with all data of the logical channel(s) with the lowest remaining time before adding data from other logical channels (i.e. those with the next lowest remaining time, or in accordance with any other parameter or procedure such as the priority of the logical channels, as described above).
  • This may be something that the UE is specifically configured to do by the network, e.g. via RRC signalling or in the DCI that schedules the PUSCH.
  • the communications device may be configured to transmit the uplink data associated with the one or more logical channels within the indicated set of uplink resources, and to transmit at least some of the uplink data associated with one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within the indicated set of uplink resources. This therefore makes more efficient use of the PUSCH.
  • the UE does not fill the PUSCH/TBs with data from other logical channels; i.e. delay critical data is not carried jointly with other non-delay critical data in order to ensure the chances of successful reception of the delay critical data is as high as possible.
  • This may be something that the UE is specifically configured to do by the network, e.g. via RRC signalling or in the DCI that schedules the PUSCH.
  • the communications device may be configured to transmit the uplink data associated with the one or more logical channels within the indicated set of uplink resources, and to transmit the uplink data associated with one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within one or more other sets of uplink resources.
  • the gNB can send a unique DCI scheduling a PUSCH to the UE to fetch the critical data with low remaining time as described above, where here the unique DCI may contain signalling information that indicates there are not to be any HARQ retransmissions performed by the UE after the first transmission.
  • the DCI may comprise an indication of whether or not uplink data transmitted within the indicated set of uplink resources is to be retransmitted in further sets of uplink resources.
  • this signalling information may comprise a single bit or a new Radio Network Temporary Identifier (RNTI) that can indicate that HARQ retransmission is enabled or disabled dynamically.
  • RNTI Radio Network Temporary Identifier
  • the gNB can send a unique DCI scheduling a PUSCH to the UE to fetch the critical data with low remaining time as described above, where here the unique DCI may contain signalling information that identifies the DCI itself.
  • the DCI may comprise an indicator of whether or not the indicated set of uplink resources is only for the transmission of uplink data with a remaining time below the preconfigured threshold. That is, the signalling information may indicate that this DCI is only intended to fetch the time-critical data with a short remaining time (i.e. below the threshold), and may comprise for example a single bit or a new RNTI which identifies to the UE that the PUSCH scheduled by this DCI is only to carry data with a short remaining time.
  • any PUSCH scheduled by this DCI may always be labelled as HARQ retransmission-less semi-statically, and the UE will be aware of this implicit configuration.
  • the UE can include an indication that the uplink data is being transmitted in a HARQ retransmission-less manner dynamically in the PUSCH carrying that uplink data, via UL Control Information (UCI) where the UCI is multiplexed with data in the PUSCH.
  • UCI UL Control Information
  • the communications device may be configured to transmit, to the wireless communications network (e.g.
  • Uplink Control Information UCI, indicating that the uplink data associated with the one or more logical channels is being transmited to the wireless communications network (e.g. to the infrastructure equipment) without the communications device performing any retransmissions of the uplink data associated with the one or more logical channels.
  • FIG. 7 An example is shown in Figure 7.
  • the UE 101 - after being configured to do so by the gNB 102 and upon the remaining time of data carried by one or more logical channels falls below the configured threshold - is triggered to send a DSR 120 to the gNB 102.
  • the gNB 102 scheduler After receiving the DSR, the gNB 102 scheduler becomes aware of the existence of critical data with low remaining time, and so the gNB 102 schedules 122 to the UE 101 by sending a large UL grant (i.e. by transmiting a DCI that schedules a PUSCH of sufficient size to carry the critical data before the remaining time expires).
  • the UE 101 organizes its logical channels based on the remaining time of the data carried by them and the configured threshold, and then fills the scheduled PUSCH (i.e. fills the transport block (TB) carried by the PUSCH) with the data with the low remaining time before transmiting 124 the PUSCH to the gNB 102, where this PUSCH further comprises a UCI multiplexed with that data. For example, a bit within that UCI can indicate whether HARQ retransmission are enabled or disabled dynamically. The UCI can be decoded separately by the gNB even if the PUSCH is not successfully decoded.
  • the UE if there is another resource (e.g. a PUSCH) scheduled for the UE to perform a transmission of URLLC data that overlaps in time with the PUSCH resource for HARQ retransmission-less uplink data or uplink data that has a remaining time below the configured threshold (or, at least, a shorter remaining time than the URLLC data), the UE prioritizes the one with shortest remaining time.
  • another resource e.g. a PUSCH
  • the communications device may be configured to determine, if a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network, that the communications device should prioritize the first set of uplink resources.
  • a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network.
  • the UE if there is another resource (e.g. a PUSCH) scheduled for the UE to perform a transmission of URLLC data that overlaps in time with the PUSCH resource for HARQ retransmission-less uplink data or uplink data that has a remaining time below the configured threshold (or at least, a shorter remaining time than the URLLC data), the UE always prioritizes the resource for URLLC.
  • another resource e.g. a PUSCH
  • the communications device may be configured to determine, if a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network, that the communications device should prioritize the second set of uplink resources.
  • a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network.
  • Figure 8 shows a flow diagram illustrating an example process of communications in a communications system in accordance with embodiments of the present technique.
  • the process shown by Figure 8 is specifically a method of operating a communications device (e.g. UE) configured to transmit signals to and/or to receive signals from a wireless communications network via a wireless access interface.
  • the method begins in step SI.
  • the method comprises, in step S2, determining that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network.
  • step S3 the process comprises determining that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date. Then, in step S4, the method comprises transmitting the uplink data associated with the one or more logical channels to the wireless communications network without performing any retransmissions of the uplink data associated with the one or more logical channels. The process ends in step S5.
  • infrastructure equipment and/or communications devices as herein defined may be further defined in accordance with the various arrangements and embodiments discussed in the preceding paragraphs. It would be further appreciated by those skilled in the art that such infrastructure equipment and communications devices as herein defined and described may form part of communications systems other than those defined by the present disclosure.
  • Paragraph 1 A method of operating a communications device configured to transmit signals to and/or to receive signals from a wireless communications network via a wireless access interface, the method comprising determining that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network, determining that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, and transmitting the uplink data associated with the one or more logical channels to the wireless communications network without performing any retransmissions of the uplink data associated with the one or more logical channels.
  • Paragraph 2 A method according to Paragraph 1, wherein the communications device determines the remaining time for each of the one or more logical channels based on a Packet Delay Budget, PDB, associated with that logical channel.
  • PDB Packet Delay Budget
  • Paragraph 3 A method according to Paragraph 1 or Paragraph 2, comprising receiving, from the wireless communications network, Radio Resource Control, RRC, signalling comprising an indication of the preconfigured threshold.
  • RRC Radio Resource Control
  • Paragraph 5 A method according to Paragraph 4, comprising transmitting, to the wireless communications network after determining that the communications device has the plurality of logical channels to transmit to the wireless communications network, the DSR, wherein the DSR indicates the remaining time for the uplink data associated with each of the one or more logical channels that is below the preconfigured threshold.
  • Paragraph 6 A method according to Paragraph 5, comprising receiving, from the wireless communications network in response to transmitting the DSR, Downlink Control Information, DCI, indicating a set of uplink resources of the wireless access interface, wherein a size of the indicated set of uplink resources is dependent on the DSR.
  • Paragraph 7 A method according to Paragraph 6, wherein the DCI comprises an indication of whether or not uplink data transmitted within the indicated set of uplink resources is to be retransmitted in further sets of uplink resources.
  • Paragraph 8 A method according to Paragraph 6 or Paragraph 7, wherein the DCI comprises an indication of whether or not the indicated set of uplink resources is only for the transmission of uplink data with a remaining time below the preconfigured threshold.
  • Paragraph 9 A method according to any of Paragraphs 6 to 8, comprising transmitting the uplink data associated with the one or more logical channels within the indicated set of uplink resources.
  • Paragraph 10 A method according to Paragraph 9, comprising transmitting at least some of the uplink data associated with one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within the indicated set of uplink resources.
  • Paragraph 11 A method according to Paragraph 9 or Paragraph 10, comprising transmiting the uplink data associated with one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within one or more other sets of uplink resources.
  • Paragraph 12 A method according to any of Paragraphs 1 to 11, comprising transmiting, to the wireless communications network along with the uplink data associated with the one or more logical channels, Uplink Control Information, UCI, indicating that the uplink data associated with the one or more logical channels is being transmited to the wireless communications network without the communications device performing any retransmissions of the uplink data associated with the one or more logical channels.
  • UCI Uplink Control Information
  • Paragraph 13 A method according to any of Paragraphs 1 to 12, comprising determining, if a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network, that the communications device should prioritize the first set of uplink resources.
  • Paragraph 14 A method according to any of Paragraphs 1 to 13, comprising determining, if a first set of uplink resources of the wireless access interface in which the communications device is to transmit the uplink data associated with the one or more logical channels at least partially overlaps in time with a second set of uplink resources of the wireless access interface in which the communications device is to transmit second uplink data associated with a low-latency service to the wireless communications network, that the communications device should prioritize the second set of uplink resources.
  • a communications device comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a wireless communications network via a wireless access interface, and controller circuitry configured in combination with the transceiver circuitry to determine that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network, to determine that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, and to transmit the uplink data associated with the one or more logical channels to the wireless communications network without performing any retransmissions of the uplink data associated with the one or more logical channels.
  • Circuitry for a communications device comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a wireless communications network via a wireless access interface, and controller circuitry configured in combination with the transceiver circuitry to determine that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the wireless communications network, to determine that a remaining time from transmission of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, and to transmit the uplink data associated with the one or more logical channels to the wireless communications network without performing any retransmissions of the uplink data associated with the one or more logical channels.
  • a method of operating an infrastructure equipment forming part of a wireless communications network configured to transmit signals to and/or to receive signals from a communications device via a wireless access interface, the method comprising determining that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the infrastructure equipment, determining that a remaining time from transmission by the communications device of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, transmitting, to the communications device, an indication that the communications device is to transmit the uplink data associated with the one or more logical channels to the infrastructure equipment without performing any retransmissions of the uplink data associated with the one or more logical channels, and receiving the uplink data associated with the one or more logical channels from the communications device without receiving any retransmissions of the uplink data associated with the one or more logical channels.
  • Paragraph 18 A method according to Paragraph 17, comprising transmitting, to the communications device, Radio Resource Control, RRC, signalling comprising an indication of the preconfigured threshold.
  • RRC Radio Resource Control
  • Paragraph 19 A method according to Paragraph 17 or Paragraph 18, comprising transmitting, to the communications device, RRC signalling comprising a configuration for the communications device to transmit a Delay Status Report, DSR, to the infrastructure equipment.
  • Paragraph 20 A method according to Paragraph 19, comprising receiving the DSR from the communications device, wherein the DSR indicates the remaining time for the uplink data associated with each of the one or more logical channels that is below the preconfigured threshold.
  • Paragraph 21 A method according to Paragraph 20, comprising transmitting, to the communications device in response to receiving the DSR, Downlink Control Information, DCI, indicating a set of uplink resources of the wireless access interface, wherein a size of the indicated set of uplink resources is dependent on the DSR.
  • Paragraph 22 A method according to Paragraph 21, wherein the DCI comprises an indication of whether or not uplink data transmitted by the communications device within the indicated set of uplink resources is to be retransmitted by the communications device in further sets of uplink resources.
  • Paragraph 23 A method according to Paragraph 21 or Paragraph 22, wherein the DCI comprises an indication of whether or not the indicated set of uplink resources is only for the transmission by the communications device of uplink data with a remaining time below the preconfigured threshold.
  • Paragraph 24 A method according to Paragraph 21, wherein the DCI comprises an indication of whether or not uplink data transmitted by the communications device within the indicated set of uplink resources is to be retransmitted by the communications device in further sets of uplink resources.
  • the DCI comprises an indication that the communications device is to transmit the uplink data associated with the one or more logical channels within the indicated set of uplink resources
  • the method comprises receiving the uplink data associated with the one or more logical channels within the indicated set of uplink resources.
  • Paragraph 25 A method according to Paragraph 24, wherein the DCI comprises an indication that the communications device is allowed to transmit uplink data associated with one or more others of the logical channels within the indicated set of uplink resources, and wherein the method comprises receiving, from the communications device, at least some of the uplink data associated with the one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within the indicated set of uplink resources.
  • Paragraph 26 A method according to Paragraph 24 or Paragraph 25, wherein the DCI comprises an indication that the communications device is only allowed to transmit uplink data associated with one or more others of the logical channels within one or more other sets of uplink resources to the indicated set of uplink resources, and wherein the method comprises receiving, from the communications device, the uplink data associated with the one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within the one or more other sets of uplink resources.
  • the DCI comprises an indication that the communications device is only allowed to transmit uplink data associated with one or more others of the logical channels within one or more other sets of uplink resources to the indicated set of uplink resources
  • the method comprises receiving, from the communications device, the uplink data associated with the one or more others of the logical channels for which the remaining time is not below the preconfigured threshold within the one or more other sets of uplink resources.
  • Paragraph 27 A method according to any of Paragraphs 17 to 26, comprising receiving, from the communications device along with the uplink data associated with the one or more logical channels, Uplink Control Information, UCI, indicating that the uplink data associated with the one or more logical channels is being transmitted by the communications device without the communications device performing any retransmissions of the uplink data associated with the one or more logical channels.
  • UCI Uplink Control Information
  • Paragraph 28 An infrastructure equipment forming part of a wireless communications network, the infrastructure equipment comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a communications device via a wireless access interface, and controller circuitry configured in combination with the transceiver circuitry to determine that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the infrastructure equipment, to determine that a remaining time from transmission by the communications device of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, to transmit, to the communications device, an indication that the communications device is to transmit the uplink data associated with the one or more logical channels to the infrastructure equipment without performing any retransmissions of the uplink data associated with the one or more logical channels, and to receive the uplink data associated with the one or more logical channels from the communications device without receiving any retransmissions of the uplink data associated with the one
  • Paragraph 29 Circuitry for an infrastructure equipment forming part of a wireless communications network, the infrastructure equipment comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a communications device via a wireless access interface, and controller circuitry configured in combination with the transceiver circuitry to determine that the communications device has uplink data associated with each of a plurality of logical channels to transmit to the infrastructure equipment, to determine that a remaining time from transmission by the communications device of the uplink data associated with one or more of the logical channels is below a preconfigured threshold, wherein the remaining time is an amount of time until the uplink data associated with the one or more logical channels become out of date, to transmit, to the communications device, an indication that the communications device is to transmit the uplink data associated with the one or more logical channels to the infrastructure equipment without performing any retransmissions of the uplink data associated with the one or more logical channels, and to receive the uplink data associated with the one or more logical channels from the communications device without receiving any retransmissions of the uplink data associated
  • Paragraph 30 A wireless communications system comprising a communications device according to Paragraph 15 and an infrastructure equipment according to Paragraph 28.
  • Paragraph 31. A computer program comprising instructions which, when loaded onto a computer, cause the computer to perform a method according to any of Paragraphs 1 to 14 or Paragraphs 17 to 27.
  • Paragraph 32 A non-transitory computer-readable storage medium storing a computer program according to Paragraph 31.
  • Described embodiments may be implemented in any suitable form including hardware, software, firmware or any combination of these. Described embodiments may optionally be implemented at least partly as computer software running on one or more data processors and/or digital signal processors.
  • the elements and components of any embodiment may be physically, functionally and logically implemented in any suitable way. Indeed, the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units. As such, the disclosed embodiments may be implemented in a single unit or may be physically and functionally distributed between different units, circuitry and/or processors.
  • TR 38.835 “Study on XR enhancements for NR (Release 18)”, 3GPP, vl8.0. 1, April 2023.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un procédé de fonctionnement d'un dispositif de communication configuré pour transmettre des signaux à un réseau de communication sans fil et/ou pour recevoir des signaux en provenance d'un réseau de communication sans fil par l'intermédiaire d'une interface d'accès sans fil. Le procédé consiste à : déterminer que le dispositif de communication a des données de liaison montante associées avec chacun d'une pluralité de canaux logiques à transmettre au réseau de communication sans fil ; déterminer qu'un temps restant à partir de la transmission des données de liaison montante associées à un ou plusieurs des canaux logiques est inférieur à un seuil préconfiguré, le temps restant étant un laps de temps jusqu'à ce que les données de liaison montante associées au ou aux canaux logiques deviennent déphasées, et à transmettre les données de liaison montante associées au ou aux canaux logiques au réseau de communication sans fil sans effectuer de retransmissions des données de liaison montante associées au ou aux canaux logiques.
PCT/EP2025/061915 2024-05-09 2025-04-30 Procédés, dispositifs de communication et équipement d'infrastructure Pending WO2025233209A1 (fr)

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Citations (2)

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