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WO2025201873A1 - Procédés, dispositifs de communication et équipement d'infrastructure - Google Patents

Procédés, dispositifs de communication et équipement d'infrastructure

Info

Publication number
WO2025201873A1
WO2025201873A1 PCT/EP2025/056647 EP2025056647W WO2025201873A1 WO 2025201873 A1 WO2025201873 A1 WO 2025201873A1 EP 2025056647 W EP2025056647 W EP 2025056647W WO 2025201873 A1 WO2025201873 A1 WO 2025201873A1
Authority
WO
WIPO (PCT)
Prior art keywords
sbfd
symbols
sub
subset
slot format
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/EP2025/056647
Other languages
English (en)
Inventor
Shin Horng Wong
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
Sony Group Corp
Original Assignee
Sony Europe Bv
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 Bv, Sony Group Corp filed Critical Sony Europe Bv
Publication of WO2025201873A1 publication Critical patent/WO2025201873A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst

Definitions

  • the present disclosure relates to communications devices, infrastructure equipment, and methods for the more efficient and effective transmission and/or reception of data 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 considerations 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).
  • the present disclosure can help address or mitigate at least some of the issues discussed above.
  • 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 an infrastructure equipment of a wireless communications network.
  • the method comprises receiving, from the infrastructure equipment, a first slot format configuration for one or more time-divided slots of a radio access interface between the communications device and the infrastructure equipment, wherein the one or more time-divided slots each comprise one or more sub-band full duplex, SBFD, symbols and/or one or more non-SBFD symbols, and wherein the first slot format configuration indicates a first pattern for the SBFD symbols of the one or more time-divided slots and/or the non-SBFD symbols of the one or more time-divided slots, receiving, from the infrastructure equipment, a second slot format configuration indicating a second pattern for a subset of the SBFD symbols and/or the non-SBFD symbols, wherein the second pattern is different to the first pattern for the subset of the SBFD symbols and/or the non-SBFD symbols, determining, based on the
  • Such embodiments of the present technique which, in addition to methods of operating communications devices, relate to methods of operating infrastructure equipment, to communications devices and infrastructure equipment, to circuitry for communications devices and infrastructure equipment, to wireless communications systems, to computer programs, and to computer-readable storage mediums, can allow for the more efficient and effective use of radio resources 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
  • FIG. 2 schematically represents some aspects of a new radio access technology (RAT) wireless telecommunications system which may be configured to operate in accordance with certain embodiments of the present disclosure
  • RAT radio access technology
  • Figure 5 schematically represents second and third examples of non-overlapping sub-bands for uplink and downlink transmissions
  • Figure 8 illustrates an example of receiver power selectivity
  • Figure 9 illustrates an example of inter sub-band interference
  • 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
  • Enhanced Mobile Broadband (eMBB) services are characterised by high capacity with a requirement to support up to 20 Gb/s.
  • eMBB Enhanced Mobile Broadband
  • the requirements for Ultra Reliable and Low Latency Communications (URLLC) services are for one transmission of a 32 byte packet to be transmitted from the radio protocol layer 2/3 SDU ingress point to the radio protocol layer 2/3 SDU egress point of the radio interface within 1 ms with a reliability of 1 - 10' 5 (99.999 %) or higher (99.9999%) [2],
  • 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 25.
  • the TRPs 10 of Figure 2 may in part have a corresponding functionality to a base station or eNode B 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.
  • 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.
  • 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.
  • 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 interface 46 between the DU 42 and the CU 40 is known as the F 1 interface which can be a physical or a logical interface.
  • the Fl interface 46 between CU and DU may operate in accordance with specifications 3GPP TS 38.470 and 3GPP TS 38.473, and may be formed from a fibre optic or other wired or wireless high bandwidth connection.
  • the connection 16 from the TRP 10 to the DU 42 is via fibre optic.
  • the connection between a TRP 10 and the core network 20 can be generally referred to as a backhaul, which comprises the interface 16 from the network interface 50 of the TRP 10 to the DU 42 and the Fl interface 46 from the DU 42 to the CU 40.
  • the eNB is able to schedule communication with each of them in a manner that avoids collisions and to ensure orthogonality of the uplink signals, such that inter-subcarrier interference is avoided or mitigated.
  • 5G networks the discussions in this specification apply equally to 6G networks (and beyond) where there is expected to be significantly higher throughput, lower latency and higher reliability utilizing sub-THz frequencies.
  • NR/5G networks can operate using Time Division Duplex (TDD), where an entire frequency band or carrier is switched to either downlink or uplink transmissions for a time period and can be switched to the other of downlink or uplink transmissions at a later time period.
  • TDD operates in Half Duplex mode (HD-TDD) where the gNB or UE can, at a given time, either transmit or receive packets, but not both at the same time.
  • HD-TDD Half Duplex mode
  • a proposed new feature of such networks is to enhance duplexing operation for Time Division Duplex (TDD) by enabling Full Duplex operation in TDD (FD-TDD) [3], [4],
  • a gNB can transmit and receive data to and from the UEs at the same time on the same frequency band.
  • a UE can operate either in HD-TDD or FD-TDD mode, depending on its capability. For example, when UEs are only capable of supporting HD-TDD, FD-TDD is achieved at the gNB by scheduling a DL transmission to a first UE and scheduling a UL transmission from a second UE within the same orthogonal frequency division multiplexing (OFDM) symbol (i.e., at the same time).
  • OFDM orthogonal frequency division multiplexing
  • FD-TDD is achieved both at the gNB and the UE, where the gNB can simultaneously schedule this UE with DL and UL transmissions within the same OFDM symbol by scheduling the DL and UL transmissions at different frequencies (e.g., physical resource blocks (PRBs)) of the system bandwidth.
  • PRBs physical resource blocks
  • a UE supporting FD-TDD requires more complex hardware than a UE that only supports HD-TDD.
  • Development of current 5G networks is focused primarily on enabling FD-TDD at the gNB with UEs operating in HD-TDD mode.
  • a gNB or UE is allowed to transmit and receive data at the same time (as with FD-TDD), the traffic latency will be improved.
  • UEs are usually coverage limited in their UL transmissions when located close to the edge of a cell. While the UE coverage at the cell-edge can be improved if more time domain resources are assigned to UL transmissions (e.g. repetitions), for HD-TDD systems, if the UL direction is assigned more time resources, fewer time resources can be assigned to the DL direction, which can lead to system imbalance.
  • continuous UL resources can be assigned for repetition opportunities whilst allowing DL traffic to occur in those resources, thereby UL enhancing coverage without causing system imbalance.
  • SBFD Sub-band Full Duplex
  • Sub-band Full Duplex the frequency resource of a TDD system bandwidth or Bandwidth Part (BWP) (i.e. at the UE/gNB) is divided into two or more non-overlapping sub-bands, where each sub-band can be DL or UL [5], Guard sub-bands may be used between DL and UL sub-bands to reduce inter subband interference.
  • BWP Bandwidth Part
  • Guard sub-bands may be used between DL and UL sub-bands to reduce inter subband interference.
  • only one UL sub-band can be configured in an OFDM symbol.
  • An example is shown in Figure 4, where simultaneous DL and UL transmissions occur in three different non-overlapping sub-bands 401 to 403, i.e., in different sets of frequency Resource Blocks (RB): Subband#!
  • a guard sub-band 410 may be configured between UL and DL sub-bands 401 to 403. Guard sub-bands 410 are configured between DL Sub-band# 3 403 and UL Sub-band#2 402 and between UL Sub-band#2 402 and DL Sub-band# 1 401.
  • Figure 5 shows two further examples with a DL and UL sub-band separated by a guard sub-band, where here, the UL sub-band can be configured to occupy the lower frequency portion of the BWP whilst the DL sub-band occupies higher frequency portion of the BWP ⁇ UD ⁇ or the UL sub-band occupies the higher frequency portion of the BWP whilst the DL sub-band occupies lower frequency portion of the BWP ⁇ DU ⁇ .
  • a UL sub-band# 1 501 is separated from a DL sub-band#2 503 by a guard sub-band 502 - this sub-band arrangement is referred to as ⁇ UD ⁇ .
  • Figures 4 and 5 show the system bandwidth as being divided into either two or three sub-bands, those skilled in the art would appreciate that the concept of SBFD may (in further releases of the 3GPP specifications, for example) be extended such that any number of sub-bands could be used, if deemed beneficial.
  • the system bandwidth may be divided into four sub-bands, which may, using the example of Figure 4, include the two downlink sub-bands 401, 403, the uplink sub-band 402 and another uplink sub-band, though other sub-band arrangements are envisioned.
  • Guard sub-bands may be used in substantially any sub-band arrangement.
  • FD-TDD employing SBFD suffers from intra-cell cross link interference (CLI) at the gNB and at the UE.
  • CLI intra-cell cross link interference
  • FIG. 6 An example is shown in Figure 6, where a gNB 610 is capable of FD-TDD and is simultaneously receiving UL transmission 631 from UE1 621 and transmitting a DL transmission 642 to UE2 622.
  • intra-cell CLI is caused by the DL transmission 642 at the gNB’s transmitter self-interfering 641 with its own receiver that is trying to decode UL signals 631.
  • intra-cell CLI 632 is caused by an aggressor UE, e.g. UE1 621, transmitting in the UL 631, whilst a victim UE, e.g. UE2 622, is receiving a DL signal 642.
  • the intra-cell CLI at the gNB due to self-interference can be significant, as the DL transmission can in some cases be over 100 dB more powerful than the UL reception. Accordingly, complex RF hardware and interference cancellation are required to isolate this self-interference.
  • guard bands may be inserted between two sub-bands of different link directions as shown in Figures 4 and 5 and described above.
  • separate antenna panels may be used for transmissions and receptions at the gNB to provide spatial isolation between the DL & UL thereby reducing gNB self-interference.
  • the subset of active sub-bands to be deactivated may depend on the type of the subsequent slot format configuration used. For example, for the case where two DL sub-bands are configured, the upper DL sub-band may be configured to be deactivated under an SFI indication, and the lower DL sub-band may be deactivated under the TDD-UL-DL-ConfigDedicated configuration. In another example, both DL subbands are deactivated under SFI indication but only the upper DL sub-band is deactivated under TDD- UL-DL-ConfigDedicated configuration. In other words, the indicated subset of the active sub-bands which is to be deactivated may be dependent on a type of the second slot format configuration.
  • the subset of sub-bands to be deactivated may be indicated in RRC signalling or defined in the specifications, in respect of the different types of subsequent slot format configuration, multiple indications of different subsets may be provided in this RRC message where each different subset of subbands to be deactivated may each be associated with a different type of subsequent slot format configuration.
  • the SBFD capable UE can be indicated to ignore one or more subsequent slot format configuration messages.
  • This indication may be an indication received from the gNB, or may be fixed in the specifications and thus known by the communications device. That is, the ignored subsequent slot format configuration message will not deactivate any subbands for the SBFD capable UE.
  • the communications device may be configured to receive, from the infrastructure equipment before receiving the second slot format configuration, an indication that the communications device is to ignore the second modification. That is, the communications device may effectively treat the second modification as having not been made to those SBFD symbols rather than having been changed in accordance with the legacy configuration or that subbands have been activated or deactivated or the like.
  • an SFBD capable UE may be preconfigured (in the specifications) with set behaviour dependent on the type of slot format configuration message; again, it may be configured to ignore TDD- UL-DL-ConfigDedicated configurations but obey SFI indications and so only SFI indications can deactivate a sub-band.
  • the communications device may be configured to determine, dependent on a type of the second slot format configuration, that the communications device is to ignore the second modification.
  • a deactivated sub-band is re-activated by a (another) subsequent slot format configuration, for example if the subsequent slot format indicates that the OFDM symbol(s) is a FL OFDM symbol(s).
  • the communications device may be configured to receive, from the infrastructure equipment, a third slot format configuration indicating a third pattern for at least part of the subset of the SBFD symbols and/or the non-SBFD symbols, wherein the third pattern is different to the second pattern for the at least the part of the subset of the SBFD symbols and/or the non-SBFD symbols, and determining, based on receiving the third slot format configuration, that at least one of the one or more activated guard sub-bands is to be deactivated if the at least one of the one or more activated guard sub-bands is within one or more of the SBFD symbols of the at least the part of the subset.
  • the communications device may be configured, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, to determine that the one or more deactivated sub-bands are to be deactivated for a configured time period, and to determine, after the configured time period, that the one or more deactivated sub-bands are reactivated
  • the period of time where a sub-band is deactivated can be dynamically indicated using a DCI, semi-statically configured or fixed in the specifications.
  • an activated guard sub-band is activated for a fixed period of time.
  • Figure 16 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 16 is specifically a method of operating a communications device (e.g. UE) configured to transmit signals to and/or to receive signals from an infrastructure equipment (e.g. a gNB) of a wireless communications network.
  • a communications device e.g. UE
  • an infrastructure equipment e.g. a gNB
  • Paragraph 4 A method according to Paragraph 2 or Paragraph 3, wherein the one or more activated sub-band are guard sub-bands.
  • Paragraph 5 A method according to Paragraph 4, comprising receiving, from the infrastructure equipment, a third slot format configuration indicating a third pattern for at least part of the subset of the SBFD symbols and/or the non-SBFD symbols, wherein the third pattern is different to the second pattern for the at least the part of the subset of the SBFD symbols and/or the non-SBFD symbols, and determining, based on receiving the third slot format configuration, that at least one of the one or more activated guard sub-bands is to be deactivated if the at least one of the one or more activated guard sub-bands is within one or more of the SBFD symbols of the at least the part of the subset.
  • Paragraph 6 A method according to Paragraph 5, comprising determining that one or more deactivated sub-bands are to be reactivated if the one or more deactivated sub-bands are within one or more of the SBFD symbols of the at least the part of the subset, and determining that the at least one activated guard sub-band is to be deactivated if the at least one activated guard sub-band is within one or more of the SBFD symbols of the at least the part of the subset.
  • Paragraph 8 A method according to any of Paragraphs 1 to 7, wherein the second modification comprises one or more active sub-bands within one or more of the SBFD symbols of the subset being deactivated.
  • Paragraph 9 A method according to Paragraph 8, wherein the method comprises, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, transmitting uplink signals to and/or receiving downlink signals from the infrastructure equipment only in radio resources of the one or more time-divided slots that are outside of the one or more deactivated sub-bands.
  • Paragraph 10 A method according to Paragraph 8 or Paragraph 9, wherein the method comprises, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, receiving, in at least one of the deactivated sub-bands if the at least one deactivated sub-band is an uplink sub-band, downlink signals from the infrastructure equipment, and/or transmitting, in at least one of the deactivated sub-bands if the at least one deactivated sub-band is a downlink sub-band, uplink signals to the infrastructure equipment.
  • Paragraph 11 A method according to any of Paragraphs 8 to 10, wherein the one or more of the SBFD symbols within which the one or more active sub-bands are deactivated are configured on flexible symbols within which the communications device is able to either transmit uplink signals to or receive downlink signals from the communications device.
  • Paragraph 12 A method according to any of Paragraphs 8 to 11, wherein the one or more active subbands that are deactivated is a subset of the active sub-bands within the SBFD symbols of the subset, and wherein one or more other active sub-bands within the SBFD symbols of the subset are not deactivated.
  • Paragraph 13 A method according to Paragraph 12, comprising receiving, from the infrastructure equipment before receiving the second slot format configuration, radio resource control, RRC, signalling, wherein the RRC signalling comprises an indication of the subset of the active sub-bands that is to be deactivated after receiving the second slot format configuration.
  • Paragraph 15 A method according to any of Paragraphs 8 to 14, comprising receiving, from the infrastructure equipment, a third slot format configuration indicating a third pattern for at least part of the subset of the SBFD symbols and/or the non-SBFD symbols, wherein the third pattern is different to the second pattern for the at least the part of the subset of the SBFD symbols and/or the non-SBFD symbols, and determining, based on receiving the third slot format configuration, that at least one of the one or more deactivated sub-bands is to be reactivated if the at least one of the one or more deactivated subbands is within one or more of the SBFD symbols of the at least the part of the subset.
  • Paragraph 16 A method according to any of Paragraphs 8 to 15, wherein the method comprises, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, determining that the one or more deactivated sub-bands are to be deactivated for a configured time period, and determining, after the configured time period, that the one or more deactivated sub-bands are reactivated.
  • Paragraph 17 A method according to any of Paragraphs 1 to 16, comprising receiving, from the infrastructure equipment before receiving the second slot format configuration, an indication that the communications device is to ignore the second modification.
  • Paragraph 18 A method according to Paragraph 17, wherein the indication that the communications device is to ignore the second modification is dependent on a type of the second slot format configuration.
  • Paragraph 19 A method according to any of Paragraphs 1 to 18, comprising determining, dependent on a type of the second slot format configuration, that the communications device is to ignore the second modification.
  • Paragraph 21 A method according to any of Paragraphs 1 to 20, wherein the second slot format configuration is a slot format indicator, SFI, and wherein the SFI is received from the infrastructure equipment in a group common downlink control information, GC-DCI.
  • a communications device comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a wireless communications network, and controller circuitry configured in combination with the transceiver circuitry to receive, from the infrastructure equipment, a first slot format configuration for one or more time-divided slots of a radio access interface between the communications device and the infrastructure equipment, wherein the one or more time-divided slots each comprise one or more sub-band full duplex, SBFD, symbols and/or one or more non-SBFD symbols, and wherein the first slot format configuration indicates a first pattern for the SBFD symbols of the one or more time-divided slots and/or the non-SBFD symbols of the one or more time-divided slots, to receive, from the infrastructure equipment, a second slot format configuration indicating a second pattern for a subset of the SBFD symbols and/or the non-SBFD symbols, wherein the second pattern is different to the first pattern for the subset of the SBFD symbols and/or the non-SBFD symbols, to determine, based on the
  • Paragraph 26 A method according to Paragraph 25, wherein the second modification comprises one or more sub-bands within one or more of the SBFD symbols of the subset being activated.
  • Paragraph 28 A method according to Paragraph 26 or Paragraph 27, wherein the one or more activated sub-band are guard sub-bands.
  • Paragraph 29 A method according to Paragraph 28, comprising transmitting, to the communications device, a third slot format configuration indicating a third pattern for at least part of the subset of the SBFD symbols and/or the non-SBFD symbols, wherein the third pattern is different to the second pattern for the at least the part of the subset of the SBFD symbols and/or the non-SBFD symbols, and deactivating, based on transmitting the third slot format configuration, at least one of the one or more activated guard sub-bands if the at least one of the one or more activated guard sub-bands is within one or more of the SBFD symbols of the at least the part of the subset.
  • Paragraph 32 A method according to any of Paragraphs 25 to 31, wherein the second modification comprises one or more active sub-bands within one or more of the SBFD symbols of the subset being deactivated.
  • Paragraph 33 A method according to Paragraph 32, wherein the method comprises, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, receiving uplink signals from and/or transmitting downlink signals to the communications device only in radio resources of the one or more time-divided slots that are outside of the one or more deactivated sub-bands.
  • Paragraph 34 A method according to Paragraph 32, wherein the method comprises, after the one or more active sub-bands within one or more of the SBFD symbols of the subset are deactivated, receiving uplink signals from and/or transmitting downlink signals to the communications device only in radio resources of the one or more time-divided slots that are outside of the one or more deactivated sub-bands.
  • Paragraph 45 A method according to any of Paragraphs 25 to 44, wherein the second slot format configuration is a semi-static user equipment, UE, dedicated slot format configuration, and wherein the UE dedicated slot format configuration is transmitted to the communications device in RRC signalling.
  • Paragraph 46 A method according to any of Paragraphs 25 to 44, wherein the second slot format configuration is a semi-static user equipment, UE, dedicated slot format configuration, and wherein the UE dedicated slot format configuration is transmitted to the communications device in RRC signalling.
  • Paragraph 48 A wireless communications system comprising a communications device according to Paragraph 23 and an infrastructure equipment according to Paragraph 46.
  • Paragraph 50 A non-transitory computer-readable storage medium storing a computer program according to Paragraph 49.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un dispositif de communication configuré pour transmettre des signaux à un équipement d'infrastructure d'un réseau de communication sans fil et/ou pour recevoir des signaux provenant de celui-ci. Le procédé consiste à recevoir, de l'équipement d'infrastructure, une première configuration de format de créneau pour un ou plusieurs créneaux divisés dans le temps d'une interface d'accès radio entre le dispositif de communication et l'équipement d'infrastructure, le ou les créneaux divisés dans le temps comprenant chacun un ou plusieurs symboles en duplex intégral de sous-bande (SBFD) et/ou un ou plusieurs symboles non SBFD, et la première configuration de format de créneau indiquant un premier motif pour les symboles SBFD du ou des créneaux divisés dans le temps et/ou des symboles non SBFD du ou des créneaux divisés dans le temps ; recevoir, de l'équipement d'infrastructure, une seconde configuration de format de créneau indiquant un second motif pour un sous-ensemble des symboles SBFD et/ou des symboles non SBFD, le second motif étant différent du premier motif pour le sous-ensemble des symboles SBFD et/ou des symboles non SBFD ; déterminer, sur la base de la seconde configuration de format de créneau, une première modification des symboles non SBFD du sous-ensemble ; et déterminer, sur la base de la seconde configuration de format de créneau, une seconde modification des symboles SBFD du sous-ensemble, la première modification et la seconde modification étant différentes.
PCT/EP2025/056647 2024-03-26 2025-03-11 Procédés, dispositifs de communication et équipement d'infrastructure Pending WO2025201873A1 (fr)

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EP24166551 2024-03-26

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3545716A1 (fr) 2017-01-06 2019-10-02 Sony Corporation Appareils et procédés de télécommunications sans fil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3545716A1 (fr) 2017-01-06 2019-10-02 Sony Corporation Appareils et procédés de télécommunications sans fil

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Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for control (Release 18", TS 38.213, December 2023 (2023-12-01)
"Study on Scenarios and Requirements for Next Generation Access Technologies (Release 14", TR 38.913, ''3RD GENERATION PARTNERSHIP PROJECT; TECHNICAL SPECIFICATION GROUP RADIO ACCESS NETWORK, August 2017 (2017-08-01)
CMCC: "New SI: Study on evolution of NR duplex operation", RP-213591, December 2021 (2021-12-01)
CMCC: "Revised SID: Study on evolution of NR duplex operation", RP-220633, March 2022 (2022-03-01)
HOLMA HTOSKALA A: "LTE for UMTS OFDMA and SC-FDMA based radio access", 2009, JOHN WILEY AND SONS
LEI ZHOU ET AL: "Discussion for subband non-overlapping full duplex", vol. RAN WG1, no. Toulouse, FR; 20230821 - 20230825, 11 August 2023 (2023-08-11), XP052435647, Retrieved from the Internet <URL:https://www.3gpp.org/ftp/TSG_RAN/WG1_RL1/TSGR1_114/Docs/R1-2306401.zip> [retrieved on 20230811] *
PETER GAAL ET AL: "Feasibility and techniques for Subband non-overlapping full duplex", vol. RAN WG1, no. Incheon, KR; 20230522 - 20230526, 14 May 2023 (2023-05-14), XP052310773, Retrieved from the Internet <URL:https://www.3gpp.org/ftp/TSG_RAN/WG1_RL1/TSGR1_113/Docs/R1-2305335.zip> [retrieved on 20230514] *

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