WO2024026641A1 - Procédés, dispositifs terminaux et support lisible par ordinateur destinés aux communications - Google Patents

Procédés, dispositifs terminaux et support lisible par ordinateur destinés aux communications Download PDF

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Publication number
WO2024026641A1
WO2024026641A1 PCT/CN2022/109533 CN2022109533W WO2024026641A1 WO 2024026641 A1 WO2024026641 A1 WO 2024026641A1 CN 2022109533 W CN2022109533 W CN 2022109533W WO 2024026641 A1 WO2024026641 A1 WO 2024026641A1
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Prior art keywords
csi
subband
sbfd
resource configuration
slot
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PCT/CN2022/109533
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English (en)
Inventor
Xincai LI
Gang Wang
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Nec Corporation
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Priority to PCT/CN2022/109533 priority Critical patent/WO2024026641A1/fr
Publication of WO2024026641A1 publication Critical patent/WO2024026641A1/fr

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    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided

Definitions

  • Embodiments of the present disclosure generally relate to the field of communications, and in particular, to methods, a network device, a terminal device, and a computer readable medium for subband full duplex communication.
  • New Radio (NR) duplex operation is studied in Release 18 of the 3rd Generation Partnership Project (3GPP) .
  • the objective of this study is to identify and evaluate the potential enhancements to support duplex evolution for NR time division duplex (TDD) in unpaired spectrum.
  • TDD time division duplex
  • the study includes the subband full duplex (SBFD) subband and channel state information reference signal (CSI-RS) in the unpaired spectrum for NR time division duplex, such as the CSI measurement with SBFD, the CSI configuration with SBFD.
  • SBFD subband full duplex
  • CSI-RS channel state information reference signal
  • example embodiments of the present disclosure provide a solution for channel state information reference signal (CSI-RS) enhancement for subband full duplex.
  • CSI-RS channel state information reference signal
  • a method for communication comprises: receiving, at a terminal device from a network device, a resource configuration of a channel state information reference signal (CSI-RS) for at least one subband full duplex (SBFD) subband; generating a measurement report by performing a measurement on the CSI-RS resource based on the resource configuration; and transmitting the measurement report to the network device.
  • CSI-RS channel state information reference signal
  • SBFD subband full duplex
  • a method for communication comprises: determining, at a network device for a terminal device, a resource configuration of a channel state information reference signal (CSI-RS) for at least one subband full duplex (SBFD) subband; transmitting, to the terminal device, the resource configuration; transmitting, to the terminal device, the CSI-RS based on the resource configuration; and receiving, from the terminal device, a measurement report of the CSI-RS.
  • CSI-RS channel state information reference signal
  • SBFD subband full duplex
  • a terminal device comprising a processor and a memory storing computer program code.
  • the memory and the computer program code are configured to, with the processor, cause the network device to perform the method according to the second aspect.
  • a network device comprising a processor and a memory storing computer program code.
  • the memory and the computer program code are configured to, with the processor, cause the terminal device to perform the method according to the first aspect.
  • a computer readable medium comprises program instructions for causing an apparatus to perform at least the method according to the first and second aspects.
  • Fig. 1A illustrates a first example environments in which example embodiments of the present disclosure can be implemented
  • Fig. 1B illustrates a second example environments in which example embodiments of the present disclosure can be implemented
  • Fig. 2 illustrates a signaling flow for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 3 illustrates a first example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 4 illustrates a second example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 5 illustrates a third example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 6 illustrates a fourth example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 7 illustrates a fifth example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 8 illustrates a sixth example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 9 illustrates a seventh example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 10 illustrates a eighth example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 11 illustrates an ninth example of CSI-RS for subband full duplex communication according to some example embodiments of the present disclosure
  • Fig. 12 illustrates a flowchart of an example method implemented at a first terminal device according to some example embodiments of the present disclosure
  • Fig. 13 illustrates a flowchart of another example method implemented at a second terminal device according to some other example embodiments of the present disclosure.
  • Fig. 14 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Small Data Transmission (SDT) , mobility, Multicast and Broadcast Services (MBS) , positioning, dynamic/flexible duplex in commercial networks, reduced capability (RedCap) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eX
  • UE user equipment
  • the terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , Network-controlled Repeaters, and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • the network device may have the function of network energy saving, Self-Organizing Networks (SON) /Minimization of Drive Tests (MDT) .
  • the terminal may have the function of power saving.
  • the embodiments of the present disclosure may be performed in test equipment, e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘some embodiments’ and ‘an embodiment’ are to be read as ‘at least some embodiments. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • the term “the CSI-RS resource” may indicate resources available for CSI-RS transmission in time domain, frequency domain and code domain.
  • CSI-RS may be used for channel quality indication (CQI) measurement, beam management, tracking and mobility management, or maybe used for CLI measurement.
  • CQI channel quality indication
  • embodiments of the present disclosure provide the schemes for CSI-RS frequency resource allocation for subband full duplex.
  • Some embodiments include the scheme that CSI-RS frequency domain resource is configured to be confined within a DL subband BW. Some embodiments also include the scheme that CSI-RS frequency domain resource is configured to be distributed over one or multiple subband BWs. Some embodiments also include the scheme that CSI-RS is not mapped on the UL subband and guardband resource. Some embodiments also include the scheme that CSI-RS frequency resource mapping is not identical between half duplex (HD) slot/symbols and full duplex (FD) slot/symbols.
  • HD half duplex
  • FD full duplex
  • Some embodiments also include the scheme that the resource block group (RBG) bitmap method for non-contiguous CSI-RS FDRA. Some embodiments also include the scheme that a new resource unit is defined, such as SBFD-CSI-Resource setting. Each setting includes at least 2 CSI-RS resources.
  • RBG resource block group
  • SBFD-CSI-Resource setting Each setting includes at least 2 CSI-RS resources.
  • Some embodiments also include the scheme that the assignment resource to UL subband is subtracted for CSI-RS frequency mapping. Some embodiments also include the scheme that inter-UE multiplexing for UL physical uplink shared channel (PUSCH) transmission and DL CSI-RS receiving. Some embodiments also include the scheme that zero power channel state information reference signal (ZP-CSI-RS) can be configured to PUSCH to do resource element level (RE-level) rate matching. Some embodiments also include the scheme that ddifferent handling for CSI-RS can be flexible determined according to the requirement. Some embodiments also include the scheme that CSI measurement can be skipped on some subband non-overlapping full duplex slots/symbols. Some embodiments also include the scheme that CSI-RS resource overlapped with the guard band for SBFD. Some embodiments also include the scheme that inter-subband CLI measurement enhancement for SBFD. Some embodiments also include the scheme that CLI measurement report enhancement for SBFD.
  • ZP-CSI-RS zero power channel state information reference signal
  • FIG. 1A illustrates an example environment 100A in which example embodiments of the present disclosure can be implemented.
  • the environment 100A which may be a part of a communication network, may comprise a terminal device 110, a terminal device 120, and a network device 130.
  • the terminal devices and network devices in FIG. 1 are capable of performing transmission in the unpaired spectrum.
  • the network device 130 serves the terminal device 110 and the terminal device 120.
  • the network device 130 may provide a wireless access cell through which the terminal device 110 and the terminal device 120 may communicate with the network device 130.
  • the transmissions may be referred to as downlink transmissions, whereas for transmissions from the terminal device 110 or the terminal device 120 to the network device 130, the transmissions may be referred to as uplink transmissions.
  • the network device 130 can be a gNB that provides 3GPP New Radio (NR) cell.
  • the network device 130 may be any other access network device that provides one or more cell for terminal devices.
  • the air interfaces over which the terminal device 110, the terminal device 120 and the network device 130 communicate may be compatible with 3GPP technical specifications, such as those that define Fifth Generation (5G) NR system standards or other future standards.
  • 5G Fifth Generation
  • FIG. 1B illustrates another example environment 100B in which example embodiments of the present disclosure can be implemented.
  • the CLI of inter terminal devices may be due to either adjacent-channel CLI or co-channel-CLI, or both, depending on the deployment scenario.
  • the inter-subband CLI measurement may be required in the 110B.
  • the communication network 100 may include any suitable number of network devices and/or terminal devices adapted for implementing embodiments of the present disclosure.
  • Communications in the environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • Fig. 2 shows a signaling flow 200 for subband full duplex communication according to some example embodiments of the present disclosure.
  • the signaling flow 200 will be described with reference to Fig. 1.
  • the signaling flow 200 may involve the terminal device 110, the network device 130.
  • the order of the signalings and actions in Fig. 2 is shown only for the purpose of illustrations.
  • the order of the signalings and actions illustrated in signaling chart 200 may be performed in any suitable order adapted for implementing embodiments of the present disclosure.
  • the network device 130 may determine (205) the CSI-RS configuration.
  • the CSI-RS may comprise the resource configuration of CSI-RS and for the SBFD subband.
  • the network device 130 then may transmit (210) the configuration (204) to the terminal device 110.
  • the terminal device 110 may receive (215) the configuration (204) .
  • the network device 130 may transmit (220) the CSI-RS (204) to the terminal device 110.
  • the terminal device 110 may generate (230) the measurement report according to the CSI-RS.
  • the terminal device 110 may transmit (235) the measurement report (206) to the network device 130.
  • the network device 130 may receive (240) the measurement report (206) .
  • the at least one SBFD subband comprises a DL subband.
  • the resource configuration indicates a bandwidth of the CSI-RS on the DL subband.
  • the bandwidth of the CSI-RS is smaller than or equal to a bandwidth of the DL subband.
  • the SBFD subband may comprise a DL subband.
  • the configuration may indicate a bandwidth of the CSI-RS on the DL subband.
  • the bandwidth of the CSI-RS is smaller than or equal to a bandwidth of the DL subband.
  • CSI-RS frequency domain resource is configured to be confined within a DL subband bandwidth (BW) .
  • the terminal device 110 may expect that the CSI-RS BW within the DL subband.
  • a DL subband consists of 1 RB or a set of consecutive RBs for the DL transmission. Or if the configured value is larger than the width of the corresponding SBFD subband, the terminal device 110 may assume that the actual CSI-RS bandwidth is equal to the width of the SBFD subband. For example, if the BW of the configured DL subband is 24RB, then terminal device 110 will expect that the CSI-RS bandwidth is equal or smaller than 24RB.
  • the network device 130 may determines a multiple of the frequency domain resource configurations corresponding to a multiple of the DL subbands. And the frequency domain resource configuration is one of the multiple of the frequency domain resource configurations. For example, the network device 130 may need to configure multiple CSI-RS resources to obtain CSI corresponding to multiple BWs within a bandwidth part (BWP) , as shown in Fig. 3. So the network device 130 may determines some of the frequency domain resource configurations corresponding to some of the DL subbands. And the frequency domain resource configuration may be one of the frequency domain resource configurations.
  • BWP bandwidth part
  • the at least one SBFD subband includes a DL subband or a UL subband.
  • the resource configuration may include frequency domain resource configuration for the CSI-RS.
  • the CSI-RS may be distributed over multiple of the SBFD subbands.
  • a CSI-RS frequency domain resource may be distributed over multiple subbands BWs for SBFD.
  • each of the multiple of subbands is the DL subband and the frequency domain resource configuration indicates the CSI-RS on half duplex (HD) slot or HD symbol and on full duplex (FD) slot or FD symbol individually.
  • the CSI-RS may be distributed over DL subbands.
  • the CSI-RS may not be mapped on the UL subband and guardband resource.
  • CSI-RS frequency resource mapping may not be identical between HD slot/symbols and FD slot/symbols. For example, some description can be added in the spec 38.213 section 11.1.1 or 38.214 section 5.1.6.1 as following:
  • the frequency domain resource configuration includes a resource block group (RBG) bitmap indicating a CSI-RS distributed over a plurality of the SBFD subbands on SBFD slot or SBFD symbol.
  • RBG resource block group
  • the RBG bitmap method for PDSCH/PUSCH frequency allocation method can be used for CSI-RS frequency resource configuration in the SBFD symbols, as shown in Fig. 4.
  • the RBG size for CSI-RS configuration can be the same as PDSCH.
  • the frequency resource assignment information for CSI-RS includes a bitmap indicating the Resource Block Groups (RBGs) that are allocated to the terminal device for CSI-RS receiving within a BWP, where a RBG is a set of consecutive virtual resource blocks defined by higher layer parameter rbg-Size configured by PDSCH-Config and the size of the bandwidth part.
  • RBG Resource Block Groups
  • PUSCH-Config are predefined and transmitted from network device to terminal device via new radio resource control (RRC) .
  • RRC radio resource control
  • the revision on 38.331 for CSI-RS FrequencyOccupation for Release 18 can be as following and P is the size of the RBG:
  • the frequency domain resource configuration includes a resource unit indicating a CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol.
  • a new resource unit may be defined, such as SBFD-CSI-Resource setting, each setting may include at least 2 legacy CSI-RS resources, as shown in Fig. 5.
  • N CSI-RS resources can be treated as one effective CSI-RS resource by defining a separate ID to refer to the effective CSI-RS resource. This ID can be associated with the two legacy IDs by configuration or by implicit rule.
  • a new RRC information element (IE) SBFD-CSI-ResourceConfigId can be defined for R18 UE with SBFD operation and each SBFD-CSI-ResourceConfigId includes at least two CSI-ResourceConfigIds.
  • the other method for allocation a CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol can be considered.
  • the configuration of the CSI-FrequencyOccupation-SBFD IE gives the startingRB and numberofRBs for each DL SBFD subband for a CSI-RS.
  • the terminal device 110 subtracts UL subband from the multiple of subbands.
  • the assignment resource to UL subband may be subtracted for CSI-RS reception.
  • the frequency resource configuration for CSI-RS may be still using the existing scheme. That is the resource assignment for CSI-RS may be still giving the starting RB index and the number of RBs, and the assignment resource to UL subband may be subtracted from CSI-RS frequency configuration, then UE do the CSI-RS measurement only on the left frequency resource.
  • the configured CSI-RS BW include the UL subband, but the actually measured CSI-RS BW is BW1 and BW2.
  • the SLIV indication method may be used for the UL subband configuration or indication.
  • SLIV indication method is giving the starting OFDM Symbol (OS) and the number of OSs and the starting PRB and the number of PRBs indication. This information may be carried by downlink control information (DCI) format 2_x or UE-specific DCI.
  • DCI downlink control information
  • the CSI-RS is distributed over both of the UL subband and DL subband and the frequency domain resource configuration is common to at lest one of: a half duplex (HD) slot or a HD symbol, a full duplex (FD) slot or a FD symbol.
  • the network device 130 transmits an indication of reserving a plurality of resource elements (REs) around CSI-RS REs on the UL subband.
  • REs resource elements
  • the subband resource for UL may still be mapped for CSI-RS.
  • the CSI-RS frequency resource mapping may be identical between HD slot/symbols and FD slot/symbols.
  • the PUSCH transmission resource may be punctured or rate matched for CSI-RS transmission.
  • the resource reservation around the CSI-RS resource may be done to avoid causing interference to the CSI-RS measurement for the other UE.
  • One of the below schemes for DCI design may be considered for RE-level rate matching pattern indication to another terminal device for PUSCH transmission.
  • DG dynamic grant
  • CG configured grant
  • some REs around the CSI-RS RE (s) can be reserved by predefinition or configuration/indication through the gNB.
  • the UL subband includes a multiple of physical resource blocks (PRBs) , the resource of the channel state information interference measurement CSI-IM being not greater than the plurality of physical resource blocks (PRBs) .
  • PRBs physical resource blocks
  • ZP-CSI-RS or channel state information interference measurement CSI-IM resource may be configured/indicated to CG-DG PUSCH terminal device to do RE-level rate matching. These ZP-CSI-RS may be used for inter-subband UE-to-UE CLI measurement for the same cell. Or used for the intra-subband UE-to-UE CLI measurement for inter-cell.
  • a further terminal device may measure the Received Signal Strength Indication (RSSI) /Reference Signal Receiving Power (RSRP) of the ZP-CSI-RS resource to determine the CLI for adjacent subband.
  • the further terminal device may be configured with a list of ZP-CSI-RS-Resource sets for PUSCH transmission. If the slot/symbols is configured as SBFD operation, and another terminal device may be configured or scheduled for PUSCH transmission, then network device 130 may indicate another terminal device to do rate matching for PUSCH transmission. That is some new bit field may be added in DCI format 0_x, such as a ZP CSI-RS trigger bit field may be included in the DCI scheduling the PUSCH. Below revision can be made for 38.212 and 38.214.
  • CSI-IM resource is configured to another terminal device for CSI interference measurement (IM)
  • the configured number of PRBs nrofRBs may not exceed the number of RB that the UL subband included.
  • the starting RB where this CSI IM resource starts in relation to the UL subband resource block and an offset in relation to common resource block #0 may be configured to align the RB configuration to DL subband.
  • the CSI-RS resource configuration is determined according to a latency requirement, a capacity requirement or a reliability requirement.
  • different handling for CSI-RS measurement may be flexible determined according to the different requirement.
  • the on-demand CSI measurement may be defined for SBFD slot/symbols.
  • a rule may be defined for network device indicating terminal device whether to do the CSI-RS measurement on the CSI-RS resource that overlapped with UL subband, such as based on the traffic carried by PUSCH/PUCCH transmission on the UL subband with different latency/capacity/reliability requirements.
  • network device may indicate terminal device no need to do CSI measurement on this UL subband, and if eMBB traffic is transmitted on the UL subband, then network device may indicate terminal device to do CSI measurement on this UL subband, meanwhile network device may indicate other terminal device the transmitted PUSCH should do RE-level rate matching.
  • CSI-RS may not be transmitted and terminal device will not need to measure the CSI-RS, and if it is PUSCH only carrying data not UCI, then CSI-RS measurement should be done on the UL subband.
  • terminal device can determine whether to do CSI measurement on these SBFD symbols based on the traffic type carried by PUSCH/PUCCH, or according to the priority indication in the DCI.
  • whether UE to do the CSI measurement implicitly is based on the SBFD configuration, and no additional indication is needed.
  • the symbols/slot that is configured as SBFD resource then these symbols may be skipped to do CSI measurement even if the CSI measurement is configured, as shown in Fig. 8.
  • the terminal device 110 skips to do CSI measurement on UL subband of SBFD slot or SBFD symbol. For example, only for the configured UL BW, terminal device no need to do CSI measurement, other DL subband on the SBFD symbols terminal device still do the CSI measurement if CSI-RS is configured. That is terminal device will not receive CSI-RS in the overlapped PRBs in the OFDM symbols where these symbols are configured as UL or inter-subband guardband if UL subband and guardband is explicitly configured to terminal device.
  • the terminal device 110 skips to do CSI measurement on whole bandwidth of SBFD slot or SBFD symbol. For example, UE may not do CSI measurement on the whole BW if the slot/symbols configured as SBFD operation. For example, for slot m+1 in Fig. 8, as it is configured as SBFD slot, then terminal device will not do CSI-RS measurement on this slot in the whole BW.
  • the terminal device 110 cancels CSI-RS reception on the subband having physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) scheduling.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the terminal device 110 may cancel the CSI-RS reception on these subbands, as shown in Fig. 9. That is scheduled PUCCH/PUSCH priority is higher than CSI-RS on the UL subband.
  • the terminal device 110 cancels the CSI-RS reception on guard band of SBFD slot or SBFD symbol. For example, if terminal device 110 is configured with a CSI-RS spanning over multiple subbands bandwidths in SBFD symbols, the terminal device assumes the CSI-RS is not transmitted on PRBs contained in configured (or predefined) guard band for SBFD, as shown in Fig. 10. For example, if CSI-RS is configured with 106 PRBs on 40 MHz BWP and inter-subband guard band for the BWP is configured with 2 PRBs between two DL and UL BWs, terminal device assumes that CSI-RS will not be mapped on 4 PRBs of inter-subband guard band in every configured slot/symbol. Some descriptions can be added in the spec 38.213 section 11.1.1 and/or 38.214 section 5.1.6.1.
  • the CSI-RS resource configuration for UE includes at least one dedicated resource set for Cross Link interference (CLI) measurement.
  • the CLI measurement includes at least one of intra-subband gNB-to-gNB CLI interference measurement, inter-subband gNB-to-gNB CLI interference measurement, or intra-cell inter-subband UE-to-UE CLI measurement.
  • a dedicated CSI-RS resource set can be defined and configured for UE-to-UE intra-cell inter-subband CLI measurement.
  • Each CSI-RS resource is one port with the density-3. And the occupied whole PRBs of the RSs in this slot are equal to the whole DL subband bandwidth.
  • the measured inter-subband CLI is different for different DL subband position, as shown in Fig. 11.
  • different CSI-RS resource set can be defined for different type of CLI measurement.
  • CSI-RS resource Set1 can be used for intra-subband gNB-to-gNB CLI interference measurement
  • CSI-RS resource set2 can be used for inter-subband gNB-to-gNB CLI interference measurement
  • CSI-RS resource set3 can be used for UE-to-UE intra-cell inter-subband CLI measurement.
  • the CLI measurement type is included in the measurement or resource configuration IE.
  • a parameter CLI-Measurement-Type can be included in the IE CSI-MeasConfig.
  • the value for configuration include intra-subband gNB-to-gNB CLI IM, inter-subband gNB-to-gNB CL IM, and UE-to-UE intra-cell inter-subband CLI IM.
  • the terminal device 110 determines the CSI report for each of the plurality of SBFD subbands. In some embodiments, the terminal device 110 determines the CSI report for different RB sets in DL SBFD subband. And the RB set size is configured based on the DL subband size. In some embodiments, the terminal device 110 determines the bit sequence of the CSI report for different type of CLI measurements.
  • the size of the subband may equal to the configured full duplex subband and terminal device report the CLI of each non-contiguous subbands.
  • the DL subband may be divided into multiple smaller RB sets, and the RB set based CLI-CSI report may be considered to report the inter-subband CLI for different RB set in the DL subband for help gNB to schedule the bandwidth for PDSCH.
  • the configured RB set size for RB set based CLI report can be configured based on the DL subband size.
  • Table 1 Configurable RB set size for a DL subband
  • DL subband PRBs
  • PRBs DL subband
  • PRBs RB set size
  • the report may use the RB set differential CLI-CSI method to report the inter-subband CLI for different RB set.
  • the first CLI-CSI-RSRP for the lowest RB set in this subband is given, then the relative offset value is reported for the left RB sets in this subband.
  • different type of CLI-CSI report may be defined for intra-cell inter-subband UL-DL interference and the inter-cell inter-subband or intra-subband UL-DL interference report.
  • the CLI-CSI report bit sequence a 0 , a 1 , a 2 , a 3 , ..., a A-1 may be determined as Table 2.
  • betaoffsets values can be configured for CLI-CSI reports Part 1, CLI-CSI reports part 2 and CLI-CSI reports part 3.
  • Priority rules may be defined for CLI-CSI reports as following: CLI-CSI reports part#3 for intra-cell inter-subband UE-UE CLI has lower priority than CLI-CSI reports part #1 for inter-cell intra-subband UE-UE CLI and CLI-CSI reports part #2 for inter-cell inter-subband UE-UE CLI, then the CLI-CSI report bit mapping sequence is part1 first, then part2, and part3 is last. And if two or more kinds of CLI-CSI report are transmitted on the same resource, then either is dropped based on the priority values. And the UE-to-UE intra-cell inter-subband CLI-CRI-RSRP may be included in the reportQuantity parameter.
  • some embodiments of the present disclosure provide the following various schemes.
  • a first scheme the whole bandwidth for UE do CSI measurement on the SBFD slot/symbols and non-SBFD symbols is the same.
  • the measured CSI-RS resource can be mapped on multiple discontinues subband BW, and UE will not do CSI measurement on the subband that configured as UL or guardband, and the CSI measurement BW can be configured through one of the below methods.
  • gNB use the RBG bitmap method to configure the CSI-RS in discontinues subband BW.
  • a new resource unit for CSI-RS configuration is defined, such as SBFD-CSI-Resource setting, and each setting includes at least 2 CSI-RS resources.
  • the assignment resource to UL subband is subtracted for CSI-RS frequency mapping.
  • some rule can be defined for UE to do CSI measurement for SBFD slot/symbols. Including whether to do the CSI measurement implicitly based on the SBFD configuration. Or if it receives the DCI format 0_x (such as 0_0/0_1/0_2) to schedule UL PUSCH/PUCCH transmission on some configured CSI-RS frequency subband resource, then UE will cancel the CSI-RS reception.
  • gNB indicate UE whether to do the CSI measurement based on the latency/capacity/reliability requirements of the overlapped PUSCH/PUCCH.
  • dedicated CSI-RS resource set can be defined and configured for UE-to-UE intra-cell inter-subband CLI measurement.
  • different CSI-RS resource set can be defined for different type of CLI measurement.
  • the DL subband can be divided into multiple smaller RB sets, and RB set based CLI-CSI report can be considered to report the inter-subband CLI for different RB set in the DL subband.
  • Fig. 12 shows a flowchart of an example method 1200 implemented at the network device 130 in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 1200 will be described from the perspective of the network device 130 with respect to Figs. 1 to 2.
  • the network device 130 may determine a resource configuration of a CSI-RS for a subband full duplex (SBFD) subband.
  • the network device 130 may transmit the resource configuration to a terminal device.
  • the network device 130 may transmit the CSI-RS based on the resource configuration to the terminal device.
  • the network device 130 may receive a measurement report of the CSI-RS from the terminal device.
  • the SBFD subband comprises a DL subband.
  • the resource configuration may indicate a bandwidth of the CSI-RS on the DL subband. And the bandwidth of the CSI-RS is smaller than or equal to a bandwidth of the DL subband.
  • the network device 130 determines a multiple of the frequency domain resource configurations corresponding to the multiple of DL subbands. And the frequency domain resource configuration is one of the multiple of the frequency domain resource configurations.
  • the SBFD subband may comprise a DL subband or a UL subband.
  • the resource configuration may include frequency domain resource configuration. And the configuration may indicate the CSI-RS being distributed over a multiple of the SBFD subbands.
  • each of the multiple of subbands is the DL subband, the frequency domain resource configuration indicating the CSI-RS on half duplex (HD) slot or HD symbol and on full duplex (FD) slot or FD symbol individually.
  • the frequency domain resource configuration includes resource block group (RBG) bitmap indicating CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol.
  • the frequency domain resource configuration may include resource unit indicating CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol.
  • the CSI-RS is distributed over both of the UL subband and DL subband.
  • the frequency domain resource configuration is common to at least one of: a half duplex (HD) slot or a HD symbol, a full duplex (FD) SBFD slot or a FD symbol.
  • the network device 130 may transmit a rate matching or puncture pattern indication of the UL subband to a further terminal device.
  • the network device 130 may transmit an indication of reserving a multiple of resource elements (REs) around CSI-RS REs on the UL subband.
  • REs resource elements
  • the frequency domain resource configuration may indicate zero power channel state information reference signal (ZP-CSI-RS) or channel state information interference measurement (CSI-IM) resource.
  • the UL subband may include a multiple of physical resource blocks (PRBs) , the resource of the CSI-IM being not greater than the multiple of physical resource blocks (PRBs) .
  • the resource configuration is determined according to a latency requirement, a capacity requirement, or a reliability requirement.
  • the CSI-RS may be not transmitted on guard band of SBFD slot or SBFD symbol.
  • the resource configuration may include at least one dedicated resource set for CLI measurement.
  • the CLI measurement includes intra-subband gNB-to-gNB CLI interference measurement, inter-subband gNB-to-gNB CLI interference measurement, or intra-cell inter-subband UE-to-UE CLI measurement.
  • Fig. 13 shows a flowchart of an example method 1300 implemented at the terminal device 110 in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 1300 will be described from the perspective of the terminal device 110 with respect to Figs. 1 to 2.
  • the terminal device 110 may receive a resource configuration of a CSI-RS for SBFD subband from a network device.
  • the terminal device 110 may generate a measurement report by performing a measurement on the CSI-RS resource based on the resource configuration.
  • the terminal device 110 may transmit the measurement report to the network device.
  • the SBFD subband comprises a DL subband.
  • the resource configuration indicates a bandwidth of the CSI-RS on the DL subband.
  • the bandwidth of the CSI-RS is smaller than or equal to a bandwidth of the DL subband.
  • the resource configuration comprises a multiple of the frequency domain resource configurations corresponding to a multiple of the DL subbands.
  • the frequency domain resource configuration is one of the multiple of the frequency domain resource configurations.
  • the at least one SBFD subband comprises a DL subband or a UL subband.
  • the resource configuration includes frequency domain configuration and indicates the CSI-RS being distributed over a multiple of the SBFD subbands. Each of the multiple of subbands is the DL subband.
  • the frequency domain resource configuration indicates the CSI-RS on half duplex (HD) slot or HD symbol and full duplex (FD) slot or FD symbol individually.
  • the frequency domain resource configuration includes resource block group (RBG) bitmap indicating CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol.
  • the frequency domain resource configuration includes a resource unit indicating CSI-RS distributed over a multiple of the SBFD subbands on SBFD slot or SBFD symbol.
  • the terminal device 110 may subtract UL subband from the multiple of subbands for CSI-RS reception.
  • the frequency domain resource is distributed over both of the UL subband and DL subband.
  • the frequency domain resource configuration is common to at least one of: a half duplex (HD) slot or a HD symbol, a SBFD slot or a SBFD symbol.
  • the resource configuration indicates zero power channel state information reference signal (ZP-CSI-RS) ; or channel state information interference measurement (CSI-IM) resource.
  • ZP-CSI-RS zero power channel state information reference signal
  • CSI-IM channel state information interference measurement
  • the UL subband includes a multiple of physical resource blocks (PRBs) , a resource of the CSI-IM being not greater than the multiple of physical resource blocks (PRBs) .
  • the terminal device 110 skips to do CSI measurement on UL subband of SBFD slot or SBFD symbol.
  • the terminal device 110 skips to do CSI measurement on whole bandwidth of SBFD slot or SBFD symbol.
  • the terminal device 110 cancels CSI-RS reception on the subband having physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) scheduling.
  • the terminal device cancels the CSI-RS reception on guard band of SBFD slot or SBFD symbol.
  • the resource configuration includes at least one dedicated resource set for Cross Link interference (CLI) measurement.
  • the CLI measurement includes intra-subband gNB-to-gNB CLI interference measurement, inter-subband gNB-to-gNB CLI interference measurement or intra-cell inter-subband UE-to-UE CLI measurement.
  • the terminal device 110 determines the CSI report for each of the multiple of SBFD subbands.
  • the terminal device 110 determines the CSI report for different RB sets in DL SBFD subband.
  • the RB set size is configured based on the DL subband size.
  • the terminal device 110 may determine the bit sequence of the CSI report for different type of CLI measurements.
  • Fig. 14 is a simplified block diagram of a device 1400 that is suitable for implementing some embodiments of the present disclosure.
  • the device 1400 can be considered as a further example embodiment of the terminal device 110, 120 and network device 130 as shown in FIG. 1. Accordingly, the device 1400 can be implemented at or as at least a part of the above network devices or terminal devices.
  • the device 1400 includes a processor 1410, a memory 1420 coupled to the processor 1410, a suitable transmitter (TX) and receiver (RX) 1440 coupled to the processor 1410, and a communication interface coupled to the TX/RX 1440.
  • the memory 1420 stores at least a part of a program 1430.
  • the TX/RX 1440 is for bidirectional communications.
  • the TX/RX 1440 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between gNBs or eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the gNB or eNB, Un interface for communication between the gNB or eNB and a relay node (RN) , or Uu interface for communication between the gNB or eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the gNB or eNB and a relay node (RN)
  • Uu interface for communication between the gNB or eNB and a terminal device.
  • the program 1430 is assumed to include program instructions that, when executed by the associated processor 1410, enable the device 1400 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 2-13.
  • the embodiments herein may be implemented by computer software executable by the processor 1410 of the device 1400, or by hardware, or by a combination of software and hardware.
  • the processor 1410 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 1410 and memory 1420 may form processing means 1450 adapted to implement various embodiments of the present disclosure.
  • the memory 1420 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 1420 is shown in the device 1400, there may be several physically distinct memory modules in the device 1400.
  • the processor 1410 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 1400 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a terminal device comprises circuitry configured to perform method 1200 and/or 1300.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, technique terminal devices or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to any of Figs. 2 to 4.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.
  • embodiments of the present disclosure may provide the following solutions.
  • a method for communication comprising: receiving, at a terminal device from a network device, a resource configuration of a channel state information reference signal (CSI-RS) for at least one subband full duplex (SBFD) subband; generating a measurement report by performing a measurement on a resource of the CSI-RS based on the resource configuration; and transmitting the measurement report to the network device.
  • CSI-RS channel state information reference signal
  • SBFD subband full duplex
  • the at least one SBFD subband comprises a DL subband, the resource configuration indicating a bandwidth of the CSI-RS on the DL subband, the bandwidth of the CSI-RS being smaller than or equal to a bandwidth of the DL subband.
  • the resource configuration comprises a plurality of the frequency domain resource configurations corresponding to a plurality of the DL subbands, the frequency domain resource configuration being one of the plurality of the frequency domain resource configurations.
  • the at least one SBFD subband comprises a DL subband or a UL subband, the resource configuration including frequency domain resource configuration and indicating the CSI-RS being distributed over a plurality of the SBFD subbands.
  • each of the plurality of SBFD subbands is the DL subband; and the frequency domain resource configuration indicates the CSI-RS on at least one of following: a half duplex (HD) slot or a HD symbol, a full duplex (FD) slot or a FD symbol.
  • HD half duplex
  • FD full duplex
  • the frequency domain resource configuration includes resource block group (RBG) bitmap indicating the CSI-RS distributed over a plurality of the SBFD subbands on a SBFD slot or a SBFD symbol.
  • RBG resource block group
  • the frequency domain resource configuration includes a resource unit indicating the CSI-RS distributed over a plurality of the SBFD subbands on SBFD slot or SBFD symbol.
  • the terminal device subtracts UL subband from the plurality of SBFD subbands for CSI-RS reception.
  • the frequency domain resource is distributed over both of the UL subband and DL subband; and the frequency domain resource configuration is common to at least one of: a half duplex (HD) slot or a HD symbol, or a SBFD slot or a SBFD symbol.
  • a half duplex (HD) slot or a HD symbol or a SBFD slot or a SBFD symbol.
  • the resource configuration indicates at least one of following: a zero power channel state information reference signal (ZP-CSI-RS) ; or a channel state information interference measurement (CSI-IM) resource.
  • ZP-CSI-RS zero power channel state information reference signal
  • CSI-IM channel state information interference measurement
  • the UL subband includes a plurality of physical resource blocks (PRBs) , a resource of the CSI-IM being not greater than the plurality of physical resource blocks (PRBs) .
  • PRBs physical resource blocks
  • the terminal device skips to do CSI measurement on UL subband of a SBFD slot or a SBFD symbol.
  • the terminal device skips to do CSI measurement on whole bandwidth of aSBFD slot or a SBFD symbol.
  • the terminal device cancels CSI-RS reception on the subband having physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) scheduling.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the terminal device cancels the CSI-RS reception on guard band of a SBFD slot or a SBFD symbol.
  • the resource configuration includes at least one dedicated resource set for Cross Link interference (CLI) measurement.
  • CLI Cross Link interference
  • the CLI measurement includes at least one of following: intra-subband gNB-to-gNB CLI interference measurement; inter-subband gNB-to-gNB CLI interference measurement; or intra-cell inter-subband UE-to-UE CLI measurement.
  • the terminal device determines the CSI report for each of the plurality of SBFD subbands.
  • the terminal device determines the CSI report for different RB sets in DL SBFD subband, the RB set size is configured based on the DL subband size.
  • the terminal device determines the bit sequence of the CSI report for different type of CLI measurements.
  • a method for communication comprising: determining, at a network device for a terminal device, a resource configuration of a channel state information reference signal (CSI-RS) for at least one subband full duplex (SBFD) subband; transmitting, to the terminal device, the resource configuration; transmitting, to the terminal device, the CSI-RS based on the resource configuration; and receiving, from the terminal device, a measurement report of the CSI-RS.
  • CSI-RS channel state information reference signal
  • SBFD subband full duplex
  • the at least one SBFD subband comprises a DL subband, the resource configuration indicating a bandwidth of the CSI-RS on the DL subband, the bandwidth of the CSI-RS being smaller than or equal to a bandwidth of the DL subband.
  • determining the resource configuration comprises: determining a plurality of the frequency domain resource configurations corresponding to a plurality of the DL subbands, the frequency domain resource configuration being one of the plurality of the frequency domain resource configurations.
  • the at least one SBFD subband comprises a DL subband or a UL subband, the resource configuration including frequency domain resource configuration and indicating the CSI-RS being distributed over a plurality of the SBFD subbands.
  • each of the plurality of SBFD subbands is the DL subband, the frequency domain resource configuration indicating the CSI-RS on at least one of following: a half duplex (HD) slot or a HD symbol, a full duplex (FD) slot or a FD symbol.
  • a half duplex (HD) slot or a HD symbol a full duplex (FD) slot or a FD symbol.
  • the frequency domain resource configuration includes resource block group (RBG) bitmap indicating CSI-RS distributed over a plurality of the SBFD subbands on a SBFD slot or a SBFD symbol.
  • RBG resource block group
  • the frequency domain resource configuration includes resource unit indicating the CSI-RS distributed over a plurality of the SBFD subbands on a SBFD slot or a SBFD symbol.
  • the CSI-RS is distributed over both of the UL subband and DL subband; and the frequency domain resource configuration is common to at least one of: a half duplex (HD) slot or aHD symbol, or a full duplex (FD) SBFD slot or a FD symbol.
  • a half duplex (HD) slot or aHD symbol or a full duplex (FD) SBFD slot or a FD symbol.
  • the network device transmits a rate matching or puncture pattern indication of the UL subband to a further terminal device.
  • the network device transmits an indication of reserving a plurality of resource elements (REs) around CSI-RS REs on the UL subband.
  • REs resource elements
  • the frequency domain resource configuration indicates at least one of following: zero power channel state information reference signal (ZP-CSI-RS) ; or channel state information interference measurement (CSI-IM) resource.
  • ZP-CSI-RS zero power channel state information reference signal
  • CSI-IM channel state information interference measurement
  • the UL subband includes a plurality of physical resource blocks (PRBs) , the resource of the CSI-IM being not greater than the plurality of physical resource blocks (PRBs) .
  • PRBs physical resource blocks
  • the resource configuration is determined according to at least one of: a latency requirement, a capacity requirement; or a reliability requirement.
  • the CSI-RS is not transmitted on guard band of a SBFD slot or a SBFD symbol.
  • the resource configuration includes at least one dedicated resource set for Cross Link interference (CLI) measurement.
  • CLI Cross Link interference
  • the CLI measurement includes at least one of following: intra-subband gNB-to-gNB CLI interference measurement; inter-subband gNB-to-gNB CLI interference measurement; or intra-cell inter-subband UE-to-UE CLI measurement.
  • a terminal device comprising: a processor; and a memory storing computer program code; the memory and the computer program code configured to, with the processor, cause the network device to perform the method according to any of above.
  • a network device comprising: a processor; and a memory storing computer program code; the memory and the computer program code configured to, with the processor, cause the network device to perform the method according to any of above.
  • a computer readable medium having instructions stored thereon, the instructions, when executed by a processor of an apparatus, causing the apparatus to perform the method according to any of above.

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Abstract

Des exemples de modes de réalisation de la présente divulgation concernent la communication en duplex intégral de sous-bande. Un dispositif réseau détermine, au niveau d'un dispositif réseau pour un dispositif terminal, une configuration de ressource d'un signal de référence d'informations d'état de canal (CSI-RS) pour au moins une sous-bande de duplex intégral sous-bande (SBFD) ; transmet, au dispositif terminal, la configuration de ressource ; transmet, au dispositif terminal, le CSI-RS sur la base de la configuration de ressource ; et reçoit, en provenance du dispositif terminal, un rapport de mesure du CSI-RS. À travers cette solution, plusieurs types de nouvelles définitions et améliorations se rapportant à la mesure et au rapport de CSI pour un fonctionnement en duplex intégral de sous-bande sont fournis.
PCT/CN2022/109533 2022-08-01 2022-08-01 Procédés, dispositifs terminaux et support lisible par ordinateur destinés aux communications WO2024026641A1 (fr)

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ERICSSON: "On Evolution of Duplexing in Rel-18", 3GPP DRAFT; RP-212428, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Electronic meeting; 20210913 - 20210917, 6 September 2021 (2021-09-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052050404 *
HUAWEI, HISILICON: "Comments on Rel-18 draft SID on evolution of duplex operation", 3GPP DRAFT; RP-213161, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Electronic Meeting; 20211206 - 20211217, 29 November 2021 (2021-11-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052097278 *
SPREADTRUM COMMUNICATIONS: "R18 Flexible/Full Duplex considerations", 3GPP DRAFT; RWS-210054, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Electronic Meeting; 20210628 - 20210702, 7 June 2021 (2021-06-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052025617 *

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