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WO2025172141A1 - Procédés, équipement d'infrastructure et dispositifs de communication - Google Patents

Procédés, équipement d'infrastructure et dispositifs de communication

Info

Publication number
WO2025172141A1
WO2025172141A1 PCT/EP2025/053001 EP2025053001W WO2025172141A1 WO 2025172141 A1 WO2025172141 A1 WO 2025172141A1 EP 2025053001 W EP2025053001 W EP 2025053001W WO 2025172141 A1 WO2025172141 A1 WO 2025172141A1
Authority
WO
WIPO (PCT)
Prior art keywords
sbfd
physical channel
symbols
tci state
indication
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/EP2025/053001
Other languages
English (en)
Inventor
Naoki Kusashima
Shin Horng Wong
Basuki PRIYANTO
Yassin Aden Awad
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 WO2025172141A1 publication Critical patent/WO2025172141A1/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
    • H04L5/0091—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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Definitions

  • the present disclosure relates to infrastructure equipment, communications devices, and methods for the more efficient and effective transmission and/or reception of data in a wireless communications network.
  • 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.
  • Figure 15 illustrates how a transmission may overlap both SBFD and non-SBFD symbols
  • FIG. 19 shows how a transmission configuration indication (TCI) state may indicate two QCL assumptions in accordance with embodiments of the present technique
  • Figure 21 shows changes that may be made to the current ConfiguredGrantConfig IE in accordance with embodiments of the present technique
  • Figure 22 shows changes that may be made to the current PUCCH-SpatialRelationlnfo IE in accordance with embodiments of the present technique
  • FIG. 23 illustrates how separate physical uplink shared channel (PUSCH) scheduling may be applied between SBFD symbols and non-SBFD symbols in accordance with embodiments of the present technique.
  • PUSCH physical uplink shared channel
  • 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.
  • Communications devices may also be referred to as mobile stations, user equipment (UEs), user terminals, mobile radios, mobile terminals, terminal devices, wireless transmit and receive units (WTRUs), 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.
  • 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],
  • 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.
  • 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.
  • 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 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.
  • 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.
  • a UE such as UE 4 or 14 to transmit uplink data to the network (e.g. on a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH)) to, for example, base station 1 or TRP 10.
  • the UE must first ensure it is synchronised with the network on the uplink. Since a particular eNB or gNB expects to be receiving communications from many UEs, it needs to ensure that it shares a common timing understanding with each of these UEs (i.e. they are synchronised in terms of the starting times of frames and Orthogonal Frequency Division Multiplexing (OFDM) symbols). This is so that 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.
  • OFDM Orthogonal Frequency Division Multiplexing
  • 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
  • FD-TDD Full Duplex operation in TDD
  • 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), 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.
  • Sub-band Full Duplex SBFD
  • 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
  • FIG. 4 An example is shown in Figure 4, where simultaneous DL and UL transmissions occur in different nonoverlapping sub-bands 401 to 403, i.e. in different sets of frequency Resource Blocks (RB): Sub-band# 1 401, Sub-band#2 402, Sub-band#3 403, such that Sub-band# 1 401 and Sub-band#3 403 are used for DL transmissions whilst Sub-band#2 402 is used for UL transmissions.
  • RB Resource Blocks
  • Figure 4 shows the system bandwidth as being divided into three sub-bands, any number of subbands could be used.
  • the system bandwidth may be divided into four sub-bands, which may 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.
  • a guard sub-band 410 may be configured between UL and DL sub-bands 401 to 403.
  • Guard subbands 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.
  • sub-bands 401 to 403 shown in Figure 4 is just one possible arrangement of the subbands and other arrangements are possible, and guard bands may be used in substantially any sub-band arrangement.
  • the wanted transmission (Tx) power is the transmission power in the selected frequency band (i.e. the assigned channel 710). Due to roll-off of the transmission filter and nonlinearities in components of the transmitter, some transmission power is leaked into adjacent channels (including an adjacent channel 720), as shown in Figure 7.
  • the ratio of the power within the assigned frequency channel 710 to the power in the adjacent channel 720 is the Adjacent Channel Leakage Ratio (ACLR).
  • ACLR Adjacent Channel Leakage Ratio
  • the leakage power 750 will cause interference at a receiver that is receiving the signal in the adjacent channels 720.
  • a receiver’s filter is also not perfect and will receive unwanted power from adjacent channels due to its own filter roll-off.
  • An example of filter roll-off at a receiver is shown in Figure 8.
  • a receiver is configured to receive transmissions in an assigned channel 810.
  • the imperfect nature of the receiver filter means that some transmission power 850 can be received in adjacent channels 820. Therefore, if a signal 830 is transmitted on an adjacent channel 820, the receiver will inadvertently receive the adjacent signal 830 in the adjacent channel 820, to an extent.
  • the ratio of the received power in the assigned frequency channel 810 to the received power 850 in the adjacent channel 820 is the Adjacent Channel Selectivity (ACS).
  • ACS Adjacent Channel Selectivity
  • a first TRP 1301 transmits a first channel state information reference signal (CSI-RS) 1304 to a UE 1303, and a second TRP 1302 transmits a second CSI-RS 1305 the UE 1303.
  • the UE 1303 should assume that the physical downlink shared channel (PDSCH) demodulation reference signal (DMRS) 1306 also received from the first TRP 1301 is QCLed with the first CSI-RS 1304 received from the first TRP 1301, but is not QCLed with the second CSI-RS 1305 received from the second TRP 1302.
  • PDSCH physical downlink shared channel
  • DMRS demodulation reference signal
  • type A ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇ ;
  • typeD 1 Spatial Rx parameter ⁇ . It is indicated that properties associated with a particular QCL type (with respect to two antenna ports being QCLed in regard to that QCL type) are assumed to be the same. For example, if QCL type A is indicated, this signifies that two antenna ports (and/or the signals/channels received from them) are QCLed in terms of their Doppler shift, Doppler spread, average delay, and delay spread.
  • a TCI state is an indication of QCL relationship between a reference RS and a target RS in terms of the QCL type. For example, if a TCI which is associated with a certain synchronisation signal block (SSB) and a certain DMRS is indicated, then this signifies that the DMRS and the SSB are QCLed, and so the UE assume that the DMRS and its associated physical channel is transmitted from the same antenna as the SSB.
  • SSB synchronisation signal block
  • the DL grant can indicate the TCI state of the PDSCH DMRS.
  • the DL grant contains a field named "Transmission Configuration Indication” .
  • the information element (IE) shown in Figure 14 illustrates an example configuration of a TCI state. As can be seen from the example of Figure 14, the IE TCI-State associates one or two DL RS with a QCL type. For CORESET and physical downlink control channels (PDCCHs), the TCI state can be indicated in a similar way via a MAC CE.
  • IE information element
  • a UL beam may be indicated by the UL TCI state which indicates a QCL such as that between an UL RS and SRS.
  • the UL TCI state can be indicated by an SRS resource indication in the UL grant. If an SRS resource is indicated, then the PUSCH and PUSCH DMRS are transmitted by using the same beam as the indicated SRS.
  • the UL TCI state can be indicated by either a joint TCI state or an UL TCI state.
  • PDSCH#2 overlaps both non-SBFD OFDM symbols (i.e., the first and second OFDM symbols of the slot) and SBFD OFDM symbols (i.e., from the third to the twelfth OFDM symbols of the slot).
  • Transmissions which have multiple occasions and span multiple slots may also overlap SBFD and non-SBFD OFDM symbols.
  • PDSCH#1 has two repetitions, where the first repetition, PDSCH#1-R1, is transmitted in DL OFDM symbols in Slot n, whilst the second repetition, PDSCH# 1-R2, is transmitted fully in DL SBFD OFDM symbols in Slot «+l.
  • Slot n consists of DL OFDM symbols from time to to fi, and SBFD OFDM symbols from time 6 to L
  • Slot n+1 consists of SBFD OFDM symbols from time L to , and UL OFDM symbols from time h, to L.
  • the controller 1812 of the infrastructure equipment 1810 may then be configured to control the transceiver 1811 of the infrastructure equipment 1810 to either transmit 1850 the physical channel to the communications device 1820 or receive 1850 the physical channel from the communications device 1820, where the infrastructure equipment 1810 switches its antenna panel from the first antenna panel to the second antenna panel in between transmitting/receiving 1850 the first portion of the physical channel and the second portion of the physical channel.
  • the physical channel may carry downlink data or specifically a downlink data channel comprising a downlink packet or multiple downlink packets such as a PDSCH or an SPS-PDSCH.
  • the UE assumes that the antenna panel at the gNB is the same during the entire transmission of a physical channel (i.e., the antenna panel is not changed in the middle of the transmission physical channel), and only a single QCL assumption is therefore required to be indicated for the physical channel.
  • the QCL assumption also needs to be changed in the middle of physical channel between SBFD symbols and non-SBFD symbols.
  • the two QCL assumptions are indicated to the UE which are associated respectively with DMRS in a portion of the physical channel scheduled in SBFD symbols and DMRS in another portion of the physical channel scheduled in non-SBFD symbols.
  • the TCI state that indicates both of the two QCL assumptions may be indicated via a UE-specific or group-common DCI.
  • the indication of the TCI state may be transmitted by the infrastructure equipment within downlink control information (DCI) the DCI either being specific to the communications device or common to a group of communications devices (including the communications device to or from which the physical channel is transmitted or received).
  • DCI downlink control information
  • one TCI state may have two QCL assumption and which are respectively associated with a first DMRS and a second DMRS.
  • Figure 20 illustrates an information element (IE) that demonstrates an example of the expected specification changes to support such arrangements. The new portions of this IE are highlighted, as can be seen in Figure 20.
  • the proposed changes to the IE TCI- State would mean that it includes the additional parameter qcl-Type-SBFD .
  • a TCI state table containing two QCL assumptions per TCI state may be configured, and the TCI indication transmitted by the gNB may point to an index of this table.
  • the indication of the TCI state may be an indication of an index of a TCI state table comprising a plurality of TCI states.
  • Table I An example is shown below, as Table I, where the QCL assumptions specifically relate to the CSI-RSs that are indicated by each TCI state.
  • Table I TCI state table Indicating one or two QCL assumptions
  • Table II Legacy TCI state table indicating only one QCL assumption
  • one TCI state is indicated via a DL/UL grant (as per current UE behaviour) and another TCI state is indicated via a UE-specific or group-common DCI.
  • the two QCL assumptions associated with the first DMRS and second DMRS respectively may indicated via a MAC CE.
  • the indication of the TCI state is transmitted by the infrastructure equipment within a medium access control (MAC) control element (CE).
  • the MAC CE may contain one TCI state index which is associated with two QCL assumptions or two TCI state indices each associated with a QCL assumption with respect to the first and second portions of the semi-statically scheduled physical channel.
  • two separate physical channels are scheduled by two DCIs which carry each TCI.
  • a first physical channel is scheduled by using mapping type A, which only allows a scheduled channel to start from a few select symbols (1 st , 2 nd , or 3 rd symbol) from the beginning of the slot
  • a second physical channel is scheduled by using mapping type B, which allows a scheduled channel to start from anywhere in the slot.
  • the UE here needs to have a capability to receive two PDSCHs or transmit two PUSCHs in a same slot.
  • the single DCI that schedules multiple PDSCH/PUSCHs specifically indicates that the multiple PDSCHs/PUSCHs are scheduled in the one slot because the current specification only supports multi-PDSCH/PUSCH scheduling in the case that each of the multiple PDSCHs/PUSCHs is associated with a different one of multiple slots.
  • the one or more SBFD symbols and the one or more non-SBFD symbols may be within a same time-divided slot.
  • the single DCI will also contain TCI state indication which indicates two QCL assumptions as described above.
  • additional DMRS may be inserted in the non-SBFD symbols in addition to DMRS in the SBFD symbols when the gNB’s antenna panel is switched between SBFD and non-SBFD symbols in a slot.
  • two DMRS symbols may be inserted into the SBFD symbols and non-SBFD symbols, respectively.
  • the portion of the physical channel located in the SBFD symbols may be associated with the DMRS in the SBFD symbols, and the portion of the physical channel located in the non-SBFD symbols may be associated with the DMRS in the non-SBFD symbols, as described above with respect to Figure 18, for example.
  • the DMRS in SBFD symbols is not used for demodulation (by whichever of the UE or gNB is the receiver of the physical channel) of the other portion of the physical channel located in non-SBFD symbols, and vice versa (i.e., the first DMRS is for use in demodulating the first portion of the physical channel and not the second portion of the physical channel, and wherein the second DMRS is for use in demodulating the second portion of the physical channel and not the first portion of the physical channel.).
  • DMRS insertion and the DMRS position configuration may be indicated by higher layer parameter instead of the pre-determined table (e.g., Table IV) in the case of SBFD.
  • Table IV pre-determined table
  • a restriction is defined that a gNB is not allowed to configure SBFD symbols for transmission or reception of a physical channel, or schedule a physical channel if a certain physical signal or physical channel is mapped over both SBFD symbols and non-SBFD symbols.
  • the UE expects neither a transmission nor a reception across SBFD symbols and non-SBFD symbols if such a condition/restriction is applied.
  • the UE instead expects that the physical signal or physical channel is mapped on either SBFD symbols or non-SBFD symbols only in the case.
  • the infrastructure equipment and/or the communications device are configured to determine that the physical channel is not a restricted physical channel, wherein a restricted physical channel is a physical channel which is to be transmitted or received using only either SBFD symbols or non-SBFD symbols. It would be appreciated by those skilled in the art that this restriction applies for only a single instance of a physical channel.
  • the certain physical channel is a PRACH.
  • the UE will thus not expect that a RACH resource is mapped across SBFD symbols and non-SBFD symbols.
  • different RACH resources can be mapped to each of SBFD symbols and non-SBFD symbols.
  • the certain physical channel is PDSCH, PUSCH, or PUCCH, assuming these are not separated (e.g. as repetitions) across multiple slots.
  • a type of the restricted physical channel is one of a list of restricted physical channel types, wherein the list of restricted physical channel types comprises one or more of: a synchronisation signal block, SSB, a channel state information reference signal, CSI-RS, a control and resource set, CORESET, a physical random access channel, PRACH, a physical downlink shared channel, PDSCH, a physical uplink shared channel, PUSCH, and a physical uplink control channel, PUCCH.
  • the certain (restricted) physical channel is a PDSCH, PUSCH, or PUCCH, it may be specifically a PDSCH, PUSCH, or PUCCH that is used for initial access.
  • the list of restricted physical channel types comprises one or more of a PDSCH, a PUSCH, and a PUCCH
  • the one or more of the PDSCH, the PUSCH, and the PUCCH are those which are used in an initial access procedure. Since it would be too complicated to configure multiple TCI states for these physical channels during initial access, the restriction in which PDSCH, PUSCH, and PUCCH during initial access is not scheduled across SBFD symbols and non-SBFD symbols may be efficient.
  • Another example is a PDSCH, PUSCH, or PUCCH scheduled by a fallback DCI (e.g., DCI format 0 0 or 1 0).
  • the list of restricted physical channel types comprises one or more of a PDSCH, a PUSCH, and a PUCCH
  • the one or more of the PDSCH, the PUSCH, and the PUCCH are those which are scheduled by a fallback DCI. Since fallback DCIs have less extensibility, such a restriction may be efficient.
  • Another example is a PDSCH, PUSCH, or PUCCH which is scheduled with repetitions across an SBFD slot and a non-SBFD slot. If two QCU assumptions are not able to be configured for the repeated physical channels, the UE does not expect to receive the repeated PDSCH or to transmit the repeated PUSCH or PUCCH across both the SBFD slot and the non-SBFD slot.
  • Figure 24 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 24 is specifically a method of operating an infrastructure equipment (such as a gNB or TRP) forming part of a wireless communications network.
  • an infrastructure equipment such as a gNB or TRP
  • the set of radio resources comprises one or more sub-band full duplex, SBFD, symbols within which a first portion of the physical channel is to be transmitted or received and/or one or more non-SBFD symbols within which a second portion of the physical channel is to be transmitted or received, and furthermore the first portion of the physical channel comprises a first demodulation reference signal, DRMS, associated with a first quasi-co-location, QCU, assumption and the second portion of the physical channel comprises a DMRS, associated with a second QCU assumption.
  • the process comprises transmitting, to the communications device, an indication of a transmission configuration indication, TCI, state, the TCI state indicating one or both of the first QCU assumption and the second QCU assumption.
  • TCI transmission configuration indication
  • Figure 24 may be adapted in accordance with embodiments of the present technique.
  • other intermediate steps may be included in such a method, or the steps may be performed in any logical order.
  • embodiments of the present technique have been described largely by way of the example communications system shown in Figure 18, and further by way of the implementation examples shown in Figures 19 to 23, it would be clear to those skilled in the art that they could be equally applied to other systems to those described herein, provided that these are within the scope of the claims.
  • Paragraph 2 A method according to Paragraph 1, wherein the first portion of the physical channel is to be transmitted or received using a first antenna panel of the infrastructure equipment, and the second portion of the physical channel is to be transmitted or received using a second antenna panel of the infrastructure equipment.
  • Paragraph 3 A method according to Paragraph 1 or Paragraph 2, wherein the resource allocation comprises the TCI state.
  • Paragraph 4 A method according to Paragraph 3, wherein the resource allocation is transmitted by the infrastructure equipment within downlink control information, DCI.
  • Paragraph 5 A method according to Paragraph 3 or Paragraph 4, wherein the resource allocation is transmitted by the infrastructure equipment within radio resource control, RRC, signalling.
  • Paragraph 8 A method according to any of Paragraphs 1 to 7, wherein the indication of the TCI state is transmitted by the infrastructure equipment within downlink control information, DCI, the DCI being common to a group of communications devices.
  • Paragraph 11 A method according to Paragraph 9 or Paragraph 10, wherein each of the plurality of TCI states of the TCI state table indicates two QCL assumptions.
  • Paragraph 12 A method according to any of Paragraphs 1 to 11, wherein: the indication of the TCI state is transmitted by the infrastructure equipment within downlink control information, DCI, the DCI being specific to the communications device, the TCI state indicating one of the first QCL assumption and the second QCL assumption, and the resource allocation comprises an indication of a second TCI state, the second TCI state indicating the other of the first QCL assumption and the second QCL assumption.
  • the indication of the TCI state is transmitted by the infrastructure equipment within downlink control information, DCI, the DCI being specific to the communications device, the TCI state indicating one of the first QCL assumption and the second QCL assumption, and the resource allocation comprises an indication of a second TCI state, the second TCI state indicating the other of the first QCL assumption and the second QCL assumption.
  • Paragraph 14 A method according to any of Paragraphs 1 to 13, wherein the resource allocation comprises an indication of first and second sets of sounding reference signals, SRS resources configured for the communications device to transmit SRS to the wireless communications network, wherein the first set of SRS resources is associated with the first DMRS and the second set of SRS resources is associated with the second DMRS.
  • Paragraph 17 A method according to any of Paragraphs 1 to 16, wherein the set of radio resources indicated by the resource allocation comprises both of the one or more SBFD symbols and the one or more non-SBFD symbols.
  • Paragraph 19 A method according to any of Paragraphs 1 to 18, wherein the set of radio resources indicated by the resource allocation comprises one of the one or more SBFD symbols and the one or more non-SBFD symbols.
  • Paragraph 21 A method according to Paragraph 20, wherein: one of the resource allocation and the second resource allocation comprises the indication of the TCI state, the TCI state indicating one of the first QCL assumption and the second QCL assumption, and the other of the resource allocation and the second resource allocation comprises an indication of a second TCI state, the second TCI state indicating the other of the first QCL assumption and the second QCL assumption.
  • Paragraph 22 A method according to any of Paragraphs 1 to 21, wherein the first DMRS is for use in demodulating the first portion of the physical channel and not the second portion of the physical channel, and wherein the second DMRS is for use in demodulating the second portion of the physical channel and not the first portion of the physical channel.
  • Paragraph 24 A method according to any of Paragraphs 1 to 23, wherein the one or more SBFD symbols and the one or more non-SBFD symbols are within a same time-divided slot.
  • Paragraph 27 A method according to Paragraph 26, wherein where the list of restricted physical channel types comprises one or more of a PDSCH, a PUSCH, and a PUCCH, the one or more of the PDSCH, the PUSCH, and the PUCCH are used in an initial access procedure.
  • 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, and controller circuitry configured in combination with the transceiver circuitry to transmit, to a communications device, a resource allocation indicating a set of radio resources within which a physical channel is to be either transmitted by the infrastructure equipment to the communications device or received by the infrastructure equipment from the communications device, wherein the set of radio resources comprises one or more sub-band full duplex, SBFD, symbols within which a first portion of the physical channel is to be transmitted or received and/or one or more non- SBFD symbols within which a second portion of the physical channel is to be transmitted or received, and wherein the first portion of the physical channel comprises a first demodulation reference signal, DRMS, associated with a first quasi-co-location, QCL, assumption and the second portion of the physical channel comprises a DMRS, associated with a second QCL assumption, and to transmit, to the communications device, an indication of a transmission
  • Paragraph 30 Circuitry for an infrastructure equipment forming part of a wireless communications network, the circuitry comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a communications device, and controller circuitry configured in combination with the transceiver circuitry to transmit, to a communications device, a resource allocation indicating a set of radio resources within which a physical channel is to be either transmitted by the infrastructure equipment to the communications device or received by the infrastructure equipment from the communications device, wherein the set of radio resources comprises one or more sub-band full duplex, SBFD, symbols within which a first portion of the physical channel is to be transmitted or received and/or one or more non- SBFD symbols within which a second portion of the physical channel is to be transmitted or received, and wherein the first portion of the physical channel comprises a first demodulation reference signal, DRMS, associated with a first quasi-co-location, QCL, assumption and the second portion of the physical channel comprises a DMRS, associated with a second QCL assumption, and to transmit, to the communications device, an indication of
  • a method of operating a communications device configured to transmit signals to and/or to receive signals from a wireless communications network and/or one or more other communications devices, the method comprising receiving, from the wireless communications network, a resource allocation indicating a set of radio resources within which a physical channel is to be either transmitted by the communications device to the wireless communications network or received by the communications device from the wireless communications network, wherein the set of radio resources comprises one or more sub-band full duplex, SBFD, symbols within which a first portion of the physical channel is to be transmitted or received and/or one or more non-SBFD symbols within which a second portion of the physical channel is to be transmitted or received, and wherein the first portion of the physical channel comprises a first demodulation reference signal, DRMS, associated with a first quasi-co-location, QCL, assumption and the second portion of the physical channel comprises a DMRS, associated with a second QCL assumption, and receiving, from the wireless communications network, an indication of a transmission configuration indication, TCI, state, the TCI state indicating one
  • Paragraph 33 A method according to Paragraph 32, wherein the resource allocation is received by the communications device within downlink control information, DCI.
  • Paragraph 34 A method according to Paragraph 32 or Paragraph 33, wherein the resource allocation is received by the communications device within radio resource control, RRC, signalling.
  • RRC radio resource control
  • Paragraph 35 A method according to any of Paragraphs 31 to 34, wherein the indication of the TCI state is received by the communications device within a medium access control, MAC, control element, CE.
  • Paragraph 37 A method according to any of Paragraphs 31 to 36, wherein the indication of the TCI state is received by the communications device within downlink control information, DCI, the DCI being common to a group of communications devices.
  • Paragraph 38 A method according to any of Paragraphs 31 to 37, wherein the indication of the TCI state is an indication of an index of a TCI state table comprising a plurality of TCI states.
  • Paragraph 39 A method according to Paragraph 38, wherein one or more of the plurality of TCI states of the TCI state table indicate two QCL assumptions and one or more others of the plurality of TCI states of the TCI state table indicate only one QCL assumption.
  • Paragraph 41 A method according to any of Paragraphs 31 to 40, wherein: the indication of the TCI state is received by the communications device within downlink control information, DCI, the DCI being specific to the communications device, the TCI state indicating one of the first QCL assumption and the second QCL assumption, and the resource allocation comprises an indication of a second TCI state, the second TCI state indicating the other of the first QCL assumption and the second QCL assumption.
  • Paragraph 46 A method according to any of Paragraphs 31 to 45, wherein the set of radio resources indicated by the resource allocation comprises both of the one or more SBFD symbols and the one or more non-SBFD symbols.
  • Paragraph 52 A method according to any of Paragraphs 31 to 51, wherein the one or more SBFD symbols are within a first time-divided slot, and wherein the one or more non-SBFD symbols are within a second time-divided slot.
  • Paragraph 55 A method according to Paragraph 54, wherein a type of the restricted physical channel is one of a list of restricted physical channel types, wherein the list of restricted physical channel types comprises one or more of: a synchronisation signal block, SSB, a channel state information reference signal, CSI-RS, a control and resource set, CORESET, a physical random access channel, PRACH, a physical downlink shared channel, PDSCH, a physical uplink shared channel, PUSCH, and a physical uplink control channel, PUCCH.
  • a type of the restricted physical channel is one of a list of restricted physical channel types, wherein the list of restricted physical channel types comprises one or more of: a synchronisation signal block, SSB, a channel state information reference signal, CSI-RS, a control and resource set, CORESET, a physical random access channel, PRACH, a physical downlink shared channel, PDSCH, a physical uplink shared channel, PUSCH, and a physical uplink control channel, PUCCH.
  • Paragraph 57 A method according to Paragraph 55 or Paragraph 56, wherein where the list of restricted physical channel types comprises one or more of a PDSCH, a PUSCH, and a PUCCH, the one or more of the PDSCH, the PUSCH, and the PUCCH are scheduled by a fallback DCL Paragraph 58.
  • Circuitry for a communications device comprising transceiver circuitry configured to transmit signals to and/or to receive signals from a wireless communications network and/or one or more other communications devices, and controller circuitry configured in combination with the transceiver circuitry to receive, from the wireless communications network, a resource allocation indicating a set of radio resources within which a physical channel is to be either transmitted by the communications device to the wireless communications network or received by the communications device from the wireless communications network, wherein the set of radio resources comprises one or more sub-band full duplex, SBFD, symbols within which a first portion of the physical channel is to be transmitted or received and/or one or more non-SBFD symbols within which a second portion of the physical channel is to be transmitted or received, and wherein the first portion of the physical channel comprises a first demodulation reference signal, DRMS, associated with a first quasi-co-location, QCL, assumption and the second portion of the physical channel comprises a DMRS, associated with a second QCL assumption, and to receive, from the
  • 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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  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Un procédé d'exploitation d'un équipement d'infrastructure formant une partie d'un réseau de communication est divulgué. Le procédé consiste à : transmettre, à un dispositif de communication, une attribution de ressources indiquant un ensemble de ressources radio à l'intérieur desquelles un canal physique doit être soit transmis par l'équipement d'infrastructure au dispositif de communication, soit reçu par l'équipement d'infrastructure en provenance du dispositif de communication, l'ensemble de ressources radio comprenant un ou plusieurs symboles de duplex intégral de sous-bande (SBFD), à l'intérieur desquels une première partie du canal physique doit être transmise ou reçue et/ou un ou plusieurs symboles non SBFD à l'intérieur desquels une seconde partie du canal physique doit être transmise ou reçue, et la première partie du canal physique comprenant un premier signal de référence de démodulation (DRMS) associé à une première hypothèse de quasi-colocalisation (QCL) et la seconde partie du canal physique comprenant un DMRS, associé à une seconde hypothèse de QCL ; et transmettre, au dispositif de communication, une indication d'un état d'indication de configuration de transmission (TCI), l'état TCI indiquant la première l'hypothèse de QCL et/ou la seconde hypothèse de QCL. [Figure 18 jointe à l'abrégé]
PCT/EP2025/053001 2024-02-16 2025-02-05 Procédés, équipement d'infrastructure et dispositifs de communication Pending WO2025172141A1 (fr)

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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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