WO2023168610A1 - Procédé, dispositif et support lisible par ordinateur pour la gestion d'interférence de liaison croisée - Google Patents

Procédé, dispositif et support lisible par ordinateur pour la gestion d'interférence de liaison croisée Download PDF

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Publication number
WO2023168610A1
WO2023168610A1 PCT/CN2022/079796 CN2022079796W WO2023168610A1 WO 2023168610 A1 WO2023168610 A1 WO 2023168610A1 CN 2022079796 W CN2022079796 W CN 2022079796W WO 2023168610 A1 WO2023168610 A1 WO 2023168610A1
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Prior art keywords
cli
communication resource
network device
sensitivity
terminal device
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PCT/CN2022/079796
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English (en)
Inventor
Gang Wang
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Nec Corporation
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Priority to PCT/CN2022/079796 priority Critical patent/WO2023168610A1/fr
Publication of WO2023168610A1 publication Critical patent/WO2023168610A1/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
    • H04L5/003—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
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values

Definitions

  • Embodiments of the present disclosure generally relate to the field of communication, and in particular, to a method, device and computer readable medium for management of Cross Link Interference (CLI) .
  • CLI Cross Link Interference
  • network devices have been designed to operate in a duplex communication mode to improve the communication efficiency.
  • the network devices may transmit downlink data transmission and receive uplink data transmission simultaneously. Accordingly, there may be a situation that a terminal device receives a downlink data transmission from a network device and an uplink data transmission from another terminal device to the network device, simultaneously. That is, CLI may be occurred if there are different traffics/signals/channels in the same/neighboring communication (s) .
  • the network device eliminates the CLI between terminal devices by negotiating a ratio of uplink and downlink data transmission. However, there also may be CLI occurred between network devices operating in the duplex communication mode.
  • a network device receives an uplink data transmission from a terminal device and a downlink data transmission from its own which being reflected by surrounding objects.
  • the efficiency utilization of communication resources is a key aspect.
  • example embodiments of the present disclosure relate to methods, devices and computer readable media for communication.
  • a first network device transmits a plurality of reference signals for Cross Link Interference (CLI) sensitivity measurement between the first network device and second network device to a second network device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • CLI Cross Link Interference
  • a second network receives a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between the first network device and second network device from a first network device, a reference signal of the plurality of reference signal being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level
  • CLI Cross Link Interference
  • a terminal device receives a Downlink Control Information (DCI) from a network device, the DCI comprising a first part for pre-scheduling a plurality of types of transmission in a communication resource or a second part for pre-scheduling a plurality of communication resources. Then, the terminal device determines a type of a transmission to be performed or a communication resource to be used based on the received DCI.
  • DCI Downlink Control Information
  • the third network device transmits, to a first terminal device, a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device and a second terminal device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal.
  • the third network device further transmits the configuration of the reference signal to a fourth network device.
  • the fourth network device receives a configuration of a plurality of reference signals from a third network device for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device and a second terminal device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal.
  • CLI Cross Link Interference
  • the fourth network device transmits the configuration of the reference signal to a second terminal device and receives a CLI sensitivity report from a second terminal device, the CLI sensitive report comprising a CLI sensitivity level for the communication resource, the CLI sensitivity level for the communication resource being determined based on a measurement of the second terminal device on the communication resource associated with the reference signal.
  • the first terminal device receives, from a third network device, a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device and a second terminal device , a reference signal of the plurality of the reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal. Then, the first terminal device transmits the plurality of reference signals to the second terminal device.
  • CLI Cross Link Interference
  • the second terminal device receives, from a first terminal device, a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device and a second terminal device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • the second terminal device receives a configuration of the plurality of reference signals, the configuration indicating the communication resource associated with the reference signal from a fourth network device.
  • the second terminal device determines a CLI sensitivity report, the CLI sensitive report comprising a CLI sensitivity level for the communication resource and transmits the CLI sensitivity report to the fourth network device.
  • a network device comprising a processor and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the network device to perform the method of any one of the first aspect to second aspect and fourth aspect to fifth aspect.
  • a terminal device comprising a processor and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the terminal device to perform the method of any one of the third aspect or sixth aspect to seventh aspect.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method of any one of the first aspect to the seventh aspect.
  • FIG. 1 illustrates an example environment in which some embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling process of the management of CLI between network devices according to some embodiments of the present disclosure
  • FIG. 3 illustrates an example environment in which some embodiments of the present disclosure can be implemented
  • FIG. 4 illustrates a signaling process of the management of CLI between terminal devices according to some embodiments of the present disclosure
  • FIG. 5 illustrates a flowchart of an example method implemented at a first network device in accordance with some embodiments of the present disclosure
  • FIG. 6 illustrates a flowchart of an method implemented at a second network device in accordance with some embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of an example method implemented at a terminal device in accordance with some embodiments of the present disclosure
  • FIG. 8 illustrates a flowchart of an example method implemented at a third network device in accordance with some embodiments of the present disclosure
  • FIG. 9 illustrates a flowchart of an example method implemented at a fourth network device in accordance with some embodiments of the present disclosure.
  • FIG. 10 illustrates a flowchart of an example method implemented at a first terminal device in accordance with some embodiments of the present disclosure
  • FIG. 11 illustrates a flowchart of an example method implemented at a second terminal device in accordance with some embodiments of the present disclosure.
  • FIG. 12 illustrates a simplified block diagram of a device that is suitable for implementing 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 incorporated 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.
  • the term “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
  • 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.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25 GHz to 71 GHz) , 71 GHz to 114 GHz, and frequency band larger than 100 GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connections with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • 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-Organising Networks (SON) /Minimization of Drive Tests (MDT) .
  • the terminal may have the function of power saving.
  • 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 terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device and the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • 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 ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • 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 CLI may be also occurred between different network devices operating in the duplex communication mode.
  • the example embodiments of the disclosure propose a mechanism for the management of CLI.
  • a new metric for the CLI of a communication resource “CLI sensitivity level” and a new metric “CLI tolerance” reflecting a tolerance of CLI for different traffics/channels/signals are pre-defined.
  • the CLI sensitivity can be measured between network devices directly, or between terminal devices.
  • the network device can coordinate the traffics/channels/signals based on the CLI sensitivity level and associated tolerance level.
  • a first network device transmits a plurality of reference signals to a second network device for Cross Link Interference (CLI) sensitivity measurement between the first network device and second network device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level. Then the second network device performs a measurement on the communication resource associated with the reference signal. The second network device determines a CLI sensitivity report comprising a CLI sensitivity level for the communication resource. The second network device may coordinate different traffics/channels/signals having different CLI tolerance levels based on the report or transmit the report to the first network device for coordinating them, in order to eliminate the CLI.
  • CLI Cross Link Interference
  • FIG. 1 illustrates an example environment 100 in which example embodiments of the present disclosure can be implemented.
  • the environment 100 which may be a part of a communication network, comprises a first network device 110, a second network device 120, a terminal device 130 and a terminal device 140.
  • the first network device 110 and second network device 120 may operate in duplex communication mode.
  • the network device 110 may receive a uplink data transmission from the terminal device 130 and a downlink data transmission from the network device 120 simultaneously.
  • the environment 100 may comprise a further terminal device to communicate information with a further network device.
  • the communications in the environment 100 may follow any suitable communication standards or protocols, which are already in existence or to be developed in the future, such as Universal Mobile Telecommunications System (UMTS) , long term evolution (LTE) , LTE-Advanced (LTE-A) , the fifth generation (5G) New Radio (NR) , Wireless Fidelity (Wi-Fi) and Worldwide Interoperability for Microwave Access (WiMAX) standards, and employs any suitable communication technologies, including, for example, Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiplexing (OFDM) , time division multiplexing (TDM) , frequency division multiplexing (FDM) , code division multiplexing (CDM) , Bluetooth, ZigBee, and machine type communication (MTC) , enhanced mobile broadband (eMBB) , massive machine type communication (mMTC) , ultra-reliable low latency communication (URLLC) , Carrier Aggregation (CA) , Dual Connection (DC) , and
  • FIG. 2 illustrates a signaling process 200 of the management of CLI between network devices according to some embodiments of the present disclosure. For purpose of discussion, the process 200 will be described with reference to FIG. 1.
  • the first network device 110 transmits (210) a plurality of reference signals to a second network device120, the plurality of reference signals being used for Cross Link Interference (CLI) sensitivity measurement between the first network device 110 and second network device 120.
  • a reference signal of the plurality of reference signals is associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • the first network device 110 may further transmit a configuration of the reference signal, and the configuration indicates the communication resource associated with the reference signal.
  • the configuration of the a plurality of reference signals may be predefined, such that the first network device 110 and second network device 120 have the knowledge of the configuration of the plurality of reference signals in advance. In this case, the first network device 110 may transmit the plurality of reference signals to the second network device 120 without transmitting the configuration.
  • the configuration of the reference signal may be transmitted from the first network device 110 to the second network device 120 in a specific message “duplex CLI management message” , the “duplex CLI management message” may be used for performing network device-to-network device CLI management functionality.
  • the first network device 110 may comprise a gNB-Distributed Unit (DU)
  • the second network device 120 may comprise a gNB-Central Unit (CU) .
  • a CLI-duplex Information Transfer function For the transmission of duplex CLI management message, a CLI-duplex Information Transfer function is proposed, this function allows the transfer of CLI-duplex information between two network devices via the core network.
  • the purpose of the Uplink CLI-duplex Information Transfer procedure is to transfer CLI-duplex information from a network device 110 node to the AMF.
  • the purpose of the Downlink CLI-duplex Information Transfer procedure is to transfer CLI-duplex information from the AMF to the network device. This procedure uses non-UE associated signalling.
  • the network devices may use the CLI-duplex information for executing the network device-network device CLI management functionality.
  • the CLI-duplex Information may comprise at least one of the information element shown in the following Table 1:
  • the first network device 110 may transmit the configuration in the duplex CLI management message to the second network device 120 directly.
  • the duplex CLI management message comprising the configuration may be transmitted via an Access and Mobility Management Function (AMF) from the first network device 110 to the second network device 120. If the duplex CLI management message is transmitted through the AMF, the AMF may not interpret the duplex CLI management message.
  • AMF Access and Mobility Management Function
  • the TDD configuration as listed in TABLE 1 for each subband of a certain beam IE may be illustrated below:
  • the second network device 120 Upon the second network device 120 receiving the plurality of reference signals, the second network device 120 performs (220) a measurement on the communication resource based on the reference signal.
  • the first network device 110 may also transmit Time Division Duplex (TDD) configurations in the duplex CLI management message to the second network device 120.
  • TDD Time Division Duplex
  • the second network device 120 may determine a CLI sensitivity report based on the measurement on the reference signal.
  • This CLI sensitivity report comprises a CLI sensitivity level for the communication resource, and the CLI sensitivity level indicates a degree of CLI experienced by the corresponding communication resource.
  • the CLI sensitivity report may comprise a plurality of CLI sensitivity levels for a plurality of corresponding communication resources.
  • the second network device may determine the CLI sensitivity level of the communication resource based on at least one of: a detection error probability of the reference signal; a false alarm probability of the reference signal; and Signal to Noise Ratio (SNR) of the reference signal. For example, if the detection error probability of the measured reference signal is high (such as, >60%) , it means that the associated communication resource is experiencing CLI severely. In this case, the CLI sensitivity level for the communication resource may be determined as a relative high level. In some embodiments, a plurality of thresholds for determining the CLI sensitivity level for a communication resource may be predefined.
  • the CLI sensitivity level for the communication resource may be determined based on the predefined thresholds. For example, table 2 shows that a relationship between different CLI sensitivity levels and predefined thresholds.
  • CLI sensitivity level 3 (30%, 60%]
  • CLI sensitivity level 4 > 60%
  • the relationship between the CLI sensitivity level and measured metrics may also be predefined and further configured/relayed by the AMF or Operations and Maintenance (OAM) functionality dynamically.
  • AMF Operations and Maintenance
  • the CLI sensitivity report may comprise a CLI sensitivity matrix, and an element in the CLI sensitivity matrix may indicate a CLI sensitivity level of a combination resource of one or more of the time domain resource, frequency domain resource and spatial domain resource.
  • the CLI sensitivity level determined based on this reference signal may indicate the CLI degree experienced by the combination resource of the specific subband and the specific beam.
  • this CLI sensitivity level may be comprised in the CLI sensitivity matrix as an element specified by two dimensions, a frequency domain dimension and a spatial domain dimension.
  • the reference signal may be transmitted on a specific slot, specific subband and a specific beam.
  • the CLI sensitivity level determined based on this reference signal may indicate the CLI degree experienced by the combination resource of the slot, the specific subband and the specific beam.
  • this CLI sensitivity level may be comprised in the CLI sensitivity matrix as an element specified by three dimensions, a time domain dimension, frequency domain dimension and a spatial domain dimension.
  • table 3 shows a CLI sensitivity matrix formed by two dimensions, a time dimension and a frequency dimension.
  • the value of an element CLI (i, j) in this matrix present the CLI sensitivity level for subband (i) in slot (j) .
  • one dimension vector can be constructed, and subband index first then slot index to construct the one dimension vector.
  • the CLI sensitivity of beam direction is also considered.
  • the value of an element CLI (i, j, k) in this matrix of three dimensions present the CLI sensitivity level for subband (i) in slot (j) and beam (k) .
  • the second device 120 may allocate (230) the communication resource to a terminal device based on a tolerance level of traffics/channels/signals. In some other embodiments, the second network device 120 may transmit (240) the CLI sensitivity report to the first network device 110 and the allocation of the communication resource may be performed by the first network device 110.
  • different CLI tolerance levels for different traffics may be predefined. For example, ultra-reliable and low-latency communication (URLLC) traffic may have lowest tolerance level to CLI sensitivity, and eMBB traffic may have medium tolerance to CLI sensitivity, and MTC may have highest tolerance to CLI sensitivity.
  • URLLC ultra-reliable and low-latency communication
  • eMBB traffic may have medium tolerance to CLI sensitivity
  • MTC may have highest tolerance to CLI sensitivity.
  • the traffic can be transmitted on the communication resource.
  • the eMBB having the lowest CLI tolerance level may be transmitted on the communication resource determined as higher CLI sensitivity level (for example, Level 4) or any communication resource having lower CLI sensitivity level .
  • the URLLC having the lowest CLI tolerance level can only be transmitted on the communication resource having much lower CLI sensitivity level.
  • different tolerance levels for different downlink or uplink channels/signals can be defined as in the below table 4.
  • SSB, PRACH (Msg1) , SIB1, DRS can be with lowest CLI tolerance level 1
  • control channel (PDCCH, PUCCH, RAR, UCI, msgB) and msgA/msg3 can be with CLI tolerance level 2
  • aperiodic RS can be with high CLI tolerance level 3.
  • PUSCH/PDSCH and other periodic/SPS SRS/CSI-RS/PRS/PTRS can be with the highest CLI tolerance level 4.
  • the measured CLI sensitivity level is 3 for the communication resource, then only RS and PUSCH/PDSCH can be transmitted on this resource, other important channel, such as SSB, PRACH, SIB1, PDCCH, PUCCH cannot be transmitted on this communication resource.
  • the second network device 120 may determine whether a predefined CLI tolerance level of a type of a first transmission to be performed matches the CLI sensitivity level of the communication resource, and if the predefined CLI tolerance level of the type of the first transmission, the second network device 120 may allocate (230) the communication resource to the first transmission.
  • the second network 120 may transmit a Downlink Control Information (DCI) to the terminal device, and the DCI comprising a first part for pre-scheduling a plurality of types of transmission in a communication resource.
  • DCI Downlink Control Information
  • one DCI such as DCI format x_y can pre-schedule DL PDSCH and UL PUSCH on the same time-frequency resource (these resource is flexible or configured as DL/UL for this UE)
  • the DCI bit field can be designed as following.
  • the value for FDRA, timing for k0/k2 and TDRA indicated is same for PUSCH/PDSCH, and the beam index can also be the same.
  • the HARQ process ID and RV can be same for overhead reduction.
  • the NDI is only used for PUSCH.
  • the terminal device 130 After receiving the DCI, the terminal device 130 prepares the data.
  • the second network device 120 may decide the PDSCH or the PUSCH is transmitted. Meanwhile, it will send a sequence to tell UE which DL/UL transmission direction at last for this resource.
  • one DCI can pre-schedule two UL traffic types with different priority at the same time , and the two traffic have different tolerance to the CLI.
  • one timing value for k2 is indicated, and the DCI bit field can be designed as following.
  • the FDRA and the transmit beam direction can be the same.
  • the HARQ process ID and RV can be same for overhead reduction.
  • the NDI is separately indicated for the two traffics.
  • the terminal device 130 may prepare two PUSCHs. During the timeline, the terminal device 130 will detect a sequence to determine which PUSCH is sent on this resource.
  • the network device 120 may transmit a predefined sequence indicating the type of the first transmission from the plurality of the types of transmission.
  • the second network 120 may transmit a Downlink Control Information (DCI) to the terminal device 130, and the DCI comprising a second part pre-scheduling a plurality of communication resources.
  • DCI Downlink Control Information
  • the network device 120 may transmit a predefined sequence indicating this communication resource.
  • one DCI can pre-schedule PUSCH/PDSCH on two different resource, such as different subband or different beam (two SRI, TCI states) . That is, two FDRA or two beam directions in the DCI can be given.
  • the terminal device 130 and the second network device 120 may prepare two PUSCH/PDSCH.
  • the second network device 120 determines the CLI sensitivity information for these subband/beam, the second network device 120 can decide which subband/beam the PXSCH to be transmitted.
  • the second network device 120 can transmit a sequence to tell the terminal device 130 which subband/beam the PUSCH/PDSCH transmission on. Or if no CLI sensitivity information is obtained, then the resource with the smallest index is used.
  • the predefined sequence may comprise Pseudo-Noise (PN) Code and Zadeoff-Chu (ZC) sequence.
  • PN/ZC based sequence may be pre-defined for different terminal devices, and different cyclic shift may indicate different case. This relationship is predefined or configured for each terminal device.
  • base sequence s 1 is assigned for the terminal device 130.
  • two cyclic shift assigned to this UE cyclic shift a 1 present DL-to-UL or UL traffic type 1 or transmission on resource 1
  • cyclic shift a 2 present UL-to-DL or UL traffic type 2 or transmission on resource 2.
  • UE will know the transmission direction or the transmission resource or the transmission traffic type. Alternatively, one cyclic shift being assigned to a UE, if detect the sequence, then change the transmission direction, otherwise, if not detected, then the transmission is not changed.
  • the terminal device 130 may perform Listen before Talk (LBT) procedure on the pre-scheduled plurality of communication resources. Then, the terminal device 130 may perform a transmission based on the result of the LBT procedure.
  • LBT Listen before Talk
  • the second network device 120 may allocate a communication resource to these signals after the determination of the CLI sensitivity report.
  • the allocation of communication resources to the first transmission may also performed at the first network device 110 side.
  • the second network device 120 may transmit (240) the above CLI sensitivity report to the first network device 110.
  • the first network 110 may perform (250) an allocation of the communication resource in a similar way as discussed with respect to the second network device 120.
  • FIG. 3 illustrates an example environment 300 in which example embodiments of the present disclosure can be implemented.
  • the environment 300 which may be a part of a communication network, comprises a third network device 310, a fourth network device 320, a first terminal device 330 and a second terminal device 340.
  • the network device 310 and network device 320 may operate in duplex communication mode.
  • the first terminal device 330 may receive a downlink data transmission from the third network device 330 and a uplink data transmission from the second terminal device 340 simultaneously.
  • FIG. 4 illustrates a signaling process 400 of the management of CLI between terminal devices according to some embodiments of the present disclosure. For purpose of discussion, the process 400 will be described with reference to FIG. 3.
  • the third network device 310 transmits (410) to a first terminal device 330 a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between the first terminal device 330 and the second terminal device 340.
  • a reference signal of the plurality of reference signals is associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, and the configuration indicating the communication resource associated with the reference signal.
  • the third network device 310 may transmit the configuration of the plurality of reference signals to the fourth network device 320 directly or via the AMF in a similar way as discussed in the signaling process 200.
  • the third network device 310 further transmits (410) the configuration of the plurality of references to the fourth network device 320.
  • the first terminal device 330 transmits (430) the plurality of reference signals to the second terminal device 340 for measuring CLI sensitivity level of the associated communication resources.
  • the fourth network device 320 transmits (440) the configuration of the plurality of reference signals to the second terminal device 340.
  • the second terminal device 340 determines (450) a CLI sensitivity report, the CLI sensitivity report comprising a CLI sensitivity level for the communication resource.
  • the CLI sensitivity report is determined in similar way as the CLI sensitivity report discussed with respect to signaling process 200.
  • the second terminal device 440 transmits (480) the CLI sensitivity report to the fourth network device 320.
  • the fourth network device 420 may allocate the communication resource in the similar way as discussed with respect to second network device 120 in signaling process 200.
  • the fourth network device 220 may transmit (480) the CLI sensitivity report to the third network device 310, and the allocation of communication resource may be performed at the third network device 310 side.
  • the third network device 310 may allocate (490) the communication resource in the similar way as discussed with respect to first network device 110 in signaling process 200.
  • FIG. 5 illustrates a flowchart of an example method 500 of communication implemented at a first network device in accordance with some embodiments of the present disclosure.
  • the method 500 can be implemented at the first network device 110 shown in FIG. 1.
  • the method 500 will be described with reference to FIG. 1. It is to be understood that the method 500 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the first network device 110 transmits, to a second network device 120, a plurality of reference signals for Cross Link Interference (CLI) sensitivity measurement between the first network device 110 and second network device 120, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • CLI Cross Link Interference
  • the first network device 110 receives a CLI sensitivity report from the second network device 120, the CLI sensitive report comprises a CLI sensitivity level for the communication resource.
  • the CLI sensitivity level is determined based on a measurement of the second network device 120 on the communication resource associated with the reference signal.
  • the first network device 110 allocates the communication resource to the first transmission.
  • the CLI sensitivity level is determined by the second network device based on at least one of: a detection error probability of the reference signal; a false alarm probability of the reference signal; and Signal to Noise Ratio (SNR) of the reference signal.
  • SNR Signal to Noise Ratio
  • the first network device 110 allocates the communication resource to the first transmission by: transmitting Downlink Control Information (DCI) to a terminal device, the DCI comprising a first part for pre-scheduling a plurality of types of transmission in a communication resource; and transmitting, to the terminal device, a predefined sequence indicating the type of the first transmission with predefined CLI tolerance level matches the CLI sensitivity level of the communication resource.
  • DCI Downlink Control Information
  • the first network device 110 allocates the communication resource to the first transmission by: transmitting Downlink Control Information (DCI) to a terminal device, the DCI comprising a second part for pre-scheduling a plurality of communication resources; and transmitting, the terminal device, a predefined sequence indicating a communication resource of the plurality of communication resource.
  • DCI Downlink Control Information
  • the first network device 110 allocates the communication resource to the first transmission by: allocating, to a terminal device, a communication resource for transmitting at least one of acknowledgement message and negative-acknowledgement message.
  • the type of the first transmission to be performed comprises one or more of: a traffic type of the first transmission; a channel type of the first transmission; and a signal type of the first transmission.
  • the CLI sensitivity report comprises a CLI sensitivity matrix, an element in the CLI sensitivity matrix indicates a CLI sensitivity level of a combination resource of one or more of the time domain resource, frequency domain resource and spatial domain resource.
  • the method further comprising: the first network device 110 transmits, to the second network device, a configuration of the reference signal in a duplex CLI management message for the CLI measurement, the configuration indicating the communication resource associated with the reference signal.
  • the first network device 110 transmits the configuration of the reference signal by: transmitting the configuration of the reference signal to the second network device via a Access and Mobility Management Function (AMF) .
  • AMF Access and Mobility Management Function
  • FIG. 6 illustrates a flowchart of a method 600 of communication implemented at a second network device in accordance with some embodiments of the present disclosure.
  • the method 600 can be implemented at the second network device 120 shown in FIG. 1.
  • the method 600 will be described with reference to FIG. 1. It is to be understood that the method 600 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the second network device 120 receives, from a first network device 110, a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between the first network device and second network device, a reference signal of the plurality of reference signal being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • CLI Cross Link Interference
  • the second network device 120 performs a measurement on the communication resource based on the reference signal.
  • the second network device 120 determines, based on the measurement, a CLI sensitivity report, the CLI sensitive report comprising a CLI sensitivity level for the communication resource.
  • the method 600 further comprises: in accordance with a determination that a predefined CLI tolerance level of a type of a first transmission to be performed matches the CLI sensitivity level of the communication resource, allocating the communication resource to the first transmission.
  • the CLI sensitivity level is determined by the second network device based on at least one of: a detection error probability of the reference signal; a false alarm probability of the reference signal; and Signal to Noise Ratio (SNR) of the reference signal.
  • SNR Signal to Noise Ratio
  • the second network device 120 allocates the communication resource to the first transmission by: transmitting a Downlink Control Information (DCI) to a terminal device, the DCI comprising a first part for pre-scheduling a plurality of types of transmission in a communication resource; and transmitting, to the terminal device, a predefined sequence indicating the type of the first transmission with predefined CLI tolerance level matches the CLI sensitivity level of the communication resource.
  • DCI Downlink Control Information
  • the second network device 120 allocates the communication resource to the first transmission by: transmitting Downlink Control Information (DCI) to a terminal device, the DCI comprising a second part for pre-scheduling a plurality of communication resources; and transmitting, the terminal device, a predefined sequence indicating a communication resource of the plurality of communication resource.
  • DCI Downlink Control Information
  • the second network device 120 allocates the communication resource to the first transmission by: allocating, to a terminal device, a communication resource for transmitting at least one of acknowledgement message and negative-acknowledgement message.
  • the second network device 120 transmits the CLI sensitivity report to the first network device.
  • the type of the first transmission to be performed comprises one or more of: a traffic type of the first transmission; a channel type of the first transmission; and a signal type of the first transmission.
  • the CLI sensitivity report comprises a CLI sensitivity matrix, an element in the CLI sensitivity matrix indicates a CLI sensitivity level of a combination resource of one or more of the time domain resource, frequency domain resource and spatial domain resource.
  • the second network device 120 receives, from the first network device 110, a configuration of the reference signal in a duplex CLI management message for the CLI measurement, the configuration indicating the communication resource associated with the reference signal.
  • the second network device 120 receives the configuration of the reference signal from the first network device via an Access and Mobility Management Function (AMF) .
  • AMF Access and Mobility Management Function
  • FIG. 7 illustrates a flowchart of a method 700 of communication implemented at a terminal device in accordance with some embodiments of the present disclosure.
  • the method 700 can be implemented at the terminal device 130 shown in FIG. 1.
  • the method 700 will be described with reference to FIG. 1. It is to be understood that the method 700 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the terminal device 130 receives, from a network device, Downlink Control Information (DCI) , the DCI comprising a first part for pre-scheduling a plurality of types of transmission in a communication resource or a second part for pre-scheduling a plurality of communication resources
  • DCI Downlink Control Information
  • the terminal device 130 determining, based on the received DCI, a type of a transmission to be performed or a communication resource to be used.
  • the DCI comprises the first part
  • determining the type of the transmission to be performed comprises: receiving a predefined sequence indicating a type of a first transmission with predefined CLI tolerance level matches the CLI sensitivity level of the communication resource, and determining, based on the sequence, the type of the first transmission to be performed.
  • the DCI comprises the second part, and wherein determining the communication resource to be used comprises: determining, based on the sequence, the communication resource to be used.
  • determining the communication resource to be used comprises: in accordance with a determination that the DCI comprises the second DCI, determining, based on a Listen Before Talk (LBT) procedure, the communication resource to be used.
  • LBT Listen Before Talk
  • the method 700 further comprising: the terminal device 130 receives, from the network device, an allocation of a communication resource for transmitting at least one of acknowledgement message and negative-acknowledgement message.
  • FIG. 8 illustrates a flowchart of a method 800 of communication implemented at a network device in accordance with some embodiments of the present disclosure.
  • the method 800 can be implemented at the third network device 310 shown in FIG. 3.
  • the method 800 will be described with reference to FIG. 3. It is to be understood that the method 800 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the third network device 310 transmits, to a first terminal device 330, a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device 330 and a second terminal device 340, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal.
  • CLI Cross Link Interference
  • the third network device 310 transmits the configuration of the plurality of reference signals to a fourth network device 320.
  • the third network device 310 receives from the fourth network device 320, a CLI sensitivity report, the CLI sensitive report comprising a CLI sensitivity level for the communication resource, the CLI sensitivity level for the communication resource being determined by a measurement of the second terminal device on the communication resource associated with the reference signal; and in accordance with a determination that a predefined CLI tolerance level of a type of a first transmission to be performed matches the CLI sensitivity level of the communication resource, allocates the communication resource to the first transmission.
  • FIG. 9 illustrates a flowchart of a method 900 of communication implemented at a fourth network device in accordance with some embodiments of the present disclosure.
  • the method 900 can be implemented at the fourth network device 320 shown in FIG. 3.
  • the method 800 will be described with reference to FIG. 3. It is to be understood that the method 800 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the fourth network device 320 receives, from a third network device 310, a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device 330 and a second terminal device 340, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal.
  • CLI Cross Link Interference
  • the fourth network device 320 transmits the configuration of the plurality of reference signals to a second terminal device 340.
  • the fourth network device 320 receives a CLI sensitivity report from a second terminal device 310, the CLI sensitive report comprising a CLI sensitivity level for the communication resource, the CLI sensitivity level for the communication resource being determined based on a measurement of the second terminal device 340 on the communication resource associated with the reference signal.
  • the fourth network device 320 allocates the communication resource to the first transmission.
  • the fourth network device 320 transmits, to the third network device 310, the CLI sensitivity report.
  • FIG. 10 illustrates a flowchart of a method 1000 of communication implemented at a first terminal device in accordance with some embodiments of the present disclosure.
  • the method 1000 can be implemented at the first terminal device 330 shown in FIG. 3.
  • the method 1000 will be described with reference to FIG. 3. It is to be understood that the method 1000 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the first terminal device 330 receives, from a third network device 310, a configuration of a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device 330 and a second terminal device 340 , a reference signal of the plurality of the reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level, the configuration indicating the communication resource associated with the reference signal.
  • CLI Cross Link Interference
  • the first terminal device 330 transmits, to the second terminal device 340, the plurality of reference signals.
  • FIG. 11 illustrates a flowchart of a method 1100 of communication implemented at a second terminal device in accordance with some embodiments of the present disclosure.
  • the method 1000 can be implemented at the second terminal device 340 shown in FIG. 3.
  • the method 1100 will be described with reference to FIG. 3. It is to be understood that the method 1100 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the second terminal device 340 receives, from a first terminal device, a plurality of reference signals for a Cross Link Interference (CLI) sensitivity measurement between a first terminal device and a second terminal device, a reference signal of the plurality of reference signals being associated with a communication resource for measuring a corresponding Cross Link Interference (CLI) sensitivity level.
  • CLI Cross Link Interference
  • the second terminal device 340 receives, from a fourth network device 320, a configuration of the plurality of reference signals, the configuration indicating the communication resource associated with the reference signal.
  • the second terminal device 340 determines a CLI sensitivity report, the CLI sensitive report comprising a CLI sensitivity level for the communication resource.
  • the second terminal device 340 transmits, to the fourth network device 320, the CLI sensitivity report.
  • Fig. 12 is a simplified block diagram of a device 1200 that is suitable for implementing some embodiments of the present disclosure.
  • the device 1200 can be considered as a further example embodiment of the terminal devices 130 as shown in FIG. 1, and the terminal devices 330 and 340 as shown in FIG. 3 or network devices 110, 120 as shown in FIG. 1 and network devices 310, 320 as shown in FIG. 3.
  • the device 1100 can be implemented at or as at least a part of the above network devices or terminal devices.
  • the device 1200 includes a processor 1110, a memory 1220 coupled to the processor 1210, a suitable transmitter (TX) and receiver (RX) 1240 coupled to the processor 1210, and a communication interface coupled to the TX/RX 1240.
  • the memory 1220 stores at least a part of a program 1230.
  • the TX/RX 1240 is for bidirectional communications.
  • the TX/RX 1140 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 1230 is assumed to include program instructions that, when executed by the associated processor 1210, enable the device 1200 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGs. 2-11.
  • the embodiments herein may be implemented by computer software executable by the processor 1210 of the device 1200, or by hardware, or by a combination of software and hardware.
  • the processor 1210 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 1210 and memory 1220 may form processing means 1250 adapted to implement various embodiments of the present disclosure.
  • the memory 1220 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 1220 is shown in the device 1200, there may be several physically distinct memory modules in the device 1200.
  • the processor 1210 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 1200 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 700, 1000 and/or 1100.
  • a network device comprises circuitry configured to perform method 500, 600, 800 and/or 900.
  • 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. 3 to 11.
  • 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.

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Abstract

Des modes de réalisation de la présente divulgation concernent des procédés, des dispositifs et des supports lisibles par ordinateur pour la gestion d'interférence de liaison croisée (CLI). Selon des modes de réalisation de la présente divulgation, un premier dispositif de réseau transmet une pluralité de signaux de référence pour une mesure de sensibilité d'interférence de liaison croisée (CLI) entre le premier dispositif de réseau et un second dispositif de réseau au second dispositif de réseau, un signal de référence de la pluralité de signaux de référence étant associé à une ressource de communication pour mesurer un niveau de sensibilité d'interférence de liaison croisée (CLI) correspondant.
PCT/CN2022/079796 2022-03-08 2022-03-08 Procédé, dispositif et support lisible par ordinateur pour la gestion d'interférence de liaison croisée WO2023168610A1 (fr)

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WO2019234285A1 (fr) * 2018-06-04 2019-12-12 Nokia Technologies Oy Signalisation xn inter-gnb de la configuration d'une trame radio nr tdd et d'une sensibilité cli
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WO2019234285A1 (fr) * 2018-06-04 2019-12-12 Nokia Technologies Oy Signalisation xn inter-gnb de la configuration d'une trame radio nr tdd et d'une sensibilité cli
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