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WO2025148199A1 - Procédés et appareil de réduction d'interférence de liaison croisée dans des communications mobiles - Google Patents

Procédés et appareil de réduction d'interférence de liaison croisée dans des communications mobiles

Info

Publication number
WO2025148199A1
WO2025148199A1 PCT/CN2024/091759 CN2024091759W WO2025148199A1 WO 2025148199 A1 WO2025148199 A1 WO 2025148199A1 CN 2024091759 W CN2024091759 W CN 2024091759W WO 2025148199 A1 WO2025148199 A1 WO 2025148199A1
Authority
WO
WIPO (PCT)
Prior art keywords
aggressor
processor
pmi
network node
recommended
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/091759
Other languages
English (en)
Inventor
Bruno Eugene R. CLERCKX
Mohammed S Aleabe AL-IMARI
Francesc Boixadera-Espax
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MediaTek Inc
Original Assignee
MediaTek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MediaTek Inc filed Critical MediaTek Inc
Publication of WO2025148199A1 publication Critical patent/WO2025148199A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • wireless signals transmitted or broadcast by network nodes or apparatuses in a wireless network may cause cross-link-interference (CLI) to neighboring network nodes or apparatuses in the neighboring areas.
  • CLI cross-link-interference
  • SBFD sub-band full-duplex
  • UE user equipment
  • UL uplink
  • DL downlink
  • CLI improvement is an important operation to a communication apparatus in the wireless network.
  • a method may involve an apparatus receiving a request from a network node for triggering a CLI estimation.
  • the method may also involve the apparatus performing a measurement to estimate a spatial transmit covariance matrix of the apparatus to a victim UE.
  • the method may also involve the apparatus determining at least one recommended or restricted PMI according to the measurement.
  • the method may further involve the apparatus transmitting the at least one recommended or restricted PMI to the network node.
  • a method may involve a first network node obtaining sharing information from a second network node. The method may also involve the first network node determining a modulation configuration for at least one UE communicating with the first network node according to the sharing information. The method may further involve the first network node transmitting the modulation configuration to the at least one UE.
  • 5GS 5 th Generation System
  • 4G EPS 4G EPS mobile networking
  • the proposed concepts, schemes and any variation (s) /derivative (s) thereof may be implemented in, for and by other types of wireless and wired communication technologies, networks and network topologies such as, for example and without limitation, Ethernet, Universal Terrestrial Radio Access Network (UTRAN) , E-UTRAN, Global System for Mobile communications (GSM) , General Packet Radio Service (GPRS) /Enhanced Data rates for Global Evolution (EDGE) Radio Access Network (GERAN) , Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, IoT, Industrial IoT (IIoT) , Narrow Band Internet of Things (NB-IoT) , 6th Generation (6G) , and any future-developed networking technologies.
  • UTRAN Universal Terrestrial Radio Access Network
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data rates for Global Evolution
  • FIG. 1 is a diagram depicting an example scenario of a wireless communication environment having two types of interference in accordance with the present disclosure may be implemented.
  • FIG. 2 is a diagram depicting an example scenario for a PMI or RI information reporting procedure in accordance with implementations of the present disclosure.
  • FIG. 3 is a diagram depicting an example scenario for a codebook-based recommended PMI reporting under the first proposed scheme in accordance with implementations of the present disclosure.
  • FIG. 4 is a diagram depicting an example scenario for a codebook-less recommended PMI reporting under the second proposed scheme in accordance with implementations of the present disclosure.
  • FIG. 5 is a diagram depicting an example scenario for a codebook-based recommended PMI reporting under the third proposed scheme in accordance with implementations of the present disclosure.
  • FIG. 6 is a diagram depicting an example scenario for a codebook-less recommended PMI reporting under the fourth proposed scheme in accordance with implementations of the present disclosure.
  • FIG. 8 is a diagram depicting an example scenario for a codebook-based restricted PMI reporting under the first proposed scheme in accordance with implementations of the present disclosure.
  • FIG. 9 is a diagram depicting an example scenario for a codebook-less restricted PMI reporting under the second proposed scheme in accordance with implementations of the present disclosure.
  • the victim UE may receive a plurality of precoded pilots from the aggressor UE. Then, the victim UE may determine a restricted precoded pilot according to the precoded pilots. Then, the victim UE may report an index associated with the restricted precoded pilot (i.e., the index associated with the restricted PMI) to the network node. That is, in the second proposed scheme, the victim UE and the network node may not know the codebook used by the aggressor UE. Therefore, the UE may only measure the precoded pilots from the aggressor UE to find a suitable precoded pilot to be the restricted precoded pilot.
  • FIG. 10 illustrates an example scenario 1000 for a codebook-based restricted PMI reporting under the third proposed scheme in accordance with implementations of the present disclosure.
  • Scenario 1000 involves at least an aggressor UE, a victim UE and a network node (e.g., a (macro/micro) base station) of a serving cell which may be a part of a wireless network (e.g., an LTE network, a 5G/NR network, an IoT network or a 6G network) .
  • the victim UE#1 and the network node i.e., gNB
  • the victim UE#1 may determine the restricted PMI according to the codebook.
  • the UE may only measure the precoded pilots from the aggressor UE to find a suitable precoded pilot to be the restricted precoded pilot. Then, the victim UE may report a joint index associated with an index corresponding to the restricted precoded pilot and an index of a PMI for DL transmission to the network node.
  • FIG. 11 illustrates an example scenario 1100 for a codebook-less restricted PMI reporting under the fourth proposed scheme in accordance with implementations of the present disclosure.
  • Scenario 1100 involves at least an aggressor UE, a victim UE and a network node (e.g., a (macro/micro) base station) of a serving cell which may be a part of a wireless network (e.g., an LTE network, a 5G/NR network, an IoT network or a 6G network) .
  • the victim UE#1 may receive a plurality of precoded pilots from the aggressor UE#2.
  • the victim UE#1 may determine a restricted precoded pilot according to the precoded pilots, and report a joint index associated with the restricted precoded pilot and a precoded pilot for DL transmission to the network node (i.e., gNB) .
  • the network node may select the conventional PMI used in DL transmission with the network node, and victim UE may select the restricted PMI (i.e., the restricted precoded pilot) .
  • the victim UE may receive broadcast information from the network node.
  • the broadcast information may indicate at least one PMI associated with the at least one aggressor UE.
  • the victim UE may determine the restricted PMI.
  • the victim UE may report a differential PMI to indicate the restricted PMI according to the broadcast information.
  • the victim UE may recommend the aggressor UE not to use the restricted PMI and avoid to rotate its PMI to an adjacent PMI in the codebook. That is, the differential PMI may indicate the rotation information (e.g., +1, +2, -1, or -2) between the restricted PMI and the adjacent PMI.
  • the RI information may comprise a recommended RI or a restricted RI.
  • the recommended RI may recommend a rank (or a set of ranks) for the aggressor UE to use
  • the restricted RI may recommend a rank (or a set of ranks) for the aggressor UE not to use.
  • the interference is more dynamic. Therefore, the low rank CLI may be not reduced easily through the link adaption technology, but a robust CLI receiver may be appropriate to reject the low rank CLI.
  • the interference may be more spatially stable. Therefore, the high rank CLI may be not rejected easily, but the link adaption technology may be appropriate to reduce the high rank CLI.
  • the victim UE may report a recommended RI to the network node. Then, the network node may configure a rank to the aggressor UE according to the recommended RI.
  • the measurement report may comprise at least one RI report.
  • the measurement report may comprise a first RI report for a conventional RI used in DL transmission with the network node, and a second RI report which indicates the recommended RI.
  • the recommended RI reporting may be applied to reduce the CLI from the strongest aggressor UE, all aggressor UEs, a subset of aggressor UEs, or a concatenation of aggressor UEs (i.e., the total number of streams from all aggressor UEs may be equal to the recommended RI) .
  • the recommended RI reporting may be implemented on the DL subband or UL subband.
  • the victim UE may report a restricted RI to the network node. Then, the network node may configure a RI to the aggressor UE according to the restricted RI.
  • the measurement report may comprise at least one RI report.
  • the measurement report may comprise a first RI report for a conventional RI used in DL transmission with the network node, and a second RI report which indicates the restricted RI.
  • the restricted RI reporting may be applied to reduce the CLI from the strongest aggressor UE, all aggressor UEs, or a subset of aggressor UEs.
  • the restricted RI reporting may be implemented on the DL subband or UL subband.
  • the victim UE may further report an additional channel quality indicator (CQI) or a delta CQI to the network node to indicate an expected gain in an event that the PMI information or the RI information is adopted by the network node. For example, the victim UE may indicate how much gain can be expected if its recommendation is accepted by the network node.
  • CQI channel quality indicator
  • delta CQI delta CQI
  • FIG. 12 illustrates an example scenario 1200 for a friendly PMI reporting procedure in accordance with implementations of the present disclosure.
  • Scenario 1200 involves an aggressor UE, a victim UE and a network node (e.g., a (macro/micro) base station) of a serving cell which may be a part of a wireless network (e.g., an LTE network, a 5G/NR network, an IoT network or a 6G network) .
  • the aggressor UE may receive a request (i.e., a DL request) from a network node for triggering a CLI estimation (i.e., triggering a friendly PMI operation) .
  • the friendly PMI operation may be applied to a codebook-based approach or a codebook-less approach.
  • the aggressor UE may perform a measurement to estimate a spatial transmit covariance matrix of the aggressor UE to a victim UE channel (e.g., Hat ⁇ R ⁇ _t) .
  • a victim UE channel e.g., Hat ⁇ R ⁇ _t
  • the aggressor UE when the aggressor UE performs the measurement to estimate the spatial transmit covariance matrix, the aggressor UE may compute a receive covariance matrix by listening to a sounding reference signal (SRS) of the victim UE to estimate an UL transmit covariance matrix. That is, the aggressor UE may perform the measurement according to any broadcast information from the network node.
  • SRS sounding reference signal
  • the victim UE may obtain modulation information associated with an aggressor UE from a network node or through a blind detection. Then, the victim UE may measure a reference signal of the aggressor UE according to the modulation information. Then, the victim UE may perform a CLI strategy (or perform dynamic or semi-static switching between different CLI strategies) according to the reference signal and the modulation information associated with the aggressor UE (i.e., soft coordination) , or according to a command from the network node (i.e., enhanced coordination) .
  • a CLI strategy or perform dynamic or semi-static switching between different CLI strategies
  • the joint modulation information associated with the aggressor UE and the victim UE may be shared on the network node interface (e.g., the interface between the network node 1 and the network node 3) .
  • the network node communicating with the victim UE may transmit a command to the victim UE to indicate the CLI strategy for the victim UE.
  • the victim UE may need to measure SRS of the aggressor UE to determine the channel state information (CSI) (or CQI) associated with the aggressor UE, and the network node communicating with the victim UE and the network node communicating with the aggressor UE may determine the joint modulation information according to the CSI associated with the aggressor UE.
  • the enhanced coordination procedure also can be applied to MU-MIMO.
  • the victim UE may measure a reference signal (e.g., DM-RS1 of the aggressor UE) of the aggressor UE according to the detected modulation information associated with the aggressor UE.
  • the network node 3 may transmit a command to the victim UE according to the joint modulation information to indicate a CLI strategy for the victim UE.
  • the victim UE may perform the CLI strategy according to the command.
  • the network node (e.g., gNB 3) communicating with the victim UE (e.g., UE 3) may select one of the CLI strategies (or receivers) for the victim UE through a DL request or command.
  • the network node (e.g., gNB 3) communicating with the victim UE (e.g., UE 3) may select one of tree strategies (e.g., “reject” , “joint demap” , or “treat as noise” ) for the victim UE.
  • FIG. 22 illustrates an example communication system 2200 having at least an example communication apparatus 2210 and an example network apparatus 2220 in accordance with an implementation of the present disclosure.
  • Each of communication apparatus 2210 and network apparatus 2220 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to reducing CLI, including the various schemes described above with respect to various proposed designs, concepts, schemes and methods described above and with respect to user equipment and network apparatus in mobile communications, including scenarios/schemes described above as well as processes 2300, 2400, 2500 and 2600 described below.
  • Communication apparatus 2210 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus.
  • communication apparatus 2210 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer.
  • Communication apparatus 2210 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus.
  • communication apparatus 2210 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center.
  • communication apparatus 2210 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors.
  • IC integrated-circuit
  • RISC reduced-instruction set computing
  • CISC complex-instruction-set-computing
  • Communication apparatus 2210 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and/or user interface device) , and, thus, such component (s) of communication apparatus 2210 are neither shown in FIG. 22 nor described below in the interest of simplicity and brevity.
  • other components e.g., internal power supply, display device and/or user interface device
  • Network apparatus 2220 may be a part of a network apparatus, which may be a network node such as a satellite, a base station, a small cell, a router or a gateway.
  • network apparatus 2220 may be implemented in an eNodeB in an LTE network, in a gNB in a 5G/NR, IoT, NB-IoT or IIoT network or in a satellite or base station in a 6G network.
  • network apparatus 2220 may be implemented in the form of one or more IC chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors.
  • Network apparatus 2220 may include at least some of those components shown in FIG.
  • Network apparatus 2220 such as a processor 2222, for example.
  • Network apparatus 2220 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and/or user interface device) , and, thus, such component (s) of network apparatus 2220 are neither shown in FIG. 22 nor described below in the interest of simplicity and brevity.
  • each of processor 2212 and processor 2222 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though a singular term “a processor” is used herein to refer to processor 2212 and processor 2222, each of processor 2212 and processor 2222 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure.
  • each of processor 2212 and processor 2222 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks including autonomous reliability enhancements in a device (e.g., as represented by communication apparatus 2210) and a network (e.g., as represented by network apparatus 2220) in accordance with various implementations of the present disclosure.
  • processor 2212 may measure, via transceiver 2216, a signal from an aggressor UE to determine PMI information or RI information associated with CLI from the aggressor UE. Processor 2212 may transmit, via transceiver 2216, a measurement report with the PMI information or the RI information to network apparatus 2220.
  • the PMI information may comprise a recommended PMI or a restricted PMI.
  • the recommended PMI may recommend a PMI for the aggressor UE to use, and the restricted PMI may recommend a PMI for the aggressor UE not to use.
  • processor 2212 may determine the recommended PMI or the restricted PMI according to a codebook of precoders used by the aggressor UE. Processor 2212 may report, via transceiver 2216, an i ndex of the codebook associated with the recommended PMI or the restricted PMI to network apparatus 2220.
  • processor 2212 may receive, via transceiver 2216, a plurality of precoded pilots from the aggressor UE. Processor 2212 may determine a recommended precoded pilot or a restricted precoded pilot according to the precoded pilots. Processor 2212 may report, via transceiver 2216, an index associated with the recommended precoded pilot or the restricted precoded pilot to network apparatus 2220.
  • processor 2212 may determine the recommended PMI or the restricted PMI according to a codebook of precoders used by the aggressor UE. Processor 2212 may report, via transceiver 2216, a joint index associated with the recommended PMI and a PMI for downlink transmission, or a joint index associated with the restricted PMI and a PMI for downlink transmission to network apparatus 2220.
  • processor 2212 may receive, via transceiver 2216, a plurality of precoded pilots from the aggressor UE. Processor 2212 may determine a recommended precoded pilot or a restricted precoded pilot according to the precoded pilots. Processor 2212 may report, via transceiver 2216, a joint index associated with the recommended precoded pilot and a precoded pilot for downlink transmission, or a joint index associated with the restricted precoded pilot and a precoded pilot for downlink transmission to network apparatus 2220.
  • processor 2212 may receive, via transceiver 2216, broadcast information which indicates at least one PMI associated with the at least one aggressor UE from network apparatus 2220. Processor 2212 may determine the recommended PMI or the restricted PMI. Processor 2212 may report, via transceiver 2216, a differential PMI to indicate the recommended PMI or the restricted PMI according to the broadcast information.
  • the RI information may comprise. a recommended RI or a restricted RI.
  • the recommended RI may recommend a rank for the aggressor UE to use, and the restricted RI may recommend a rank for the aggressor UE not to use.
  • processor 2212 may receive, via transceiver 2216, a request from network apparatus 2220 for triggering a CLI estimation.
  • Processor 2212 may perform a measurement to estimate a spatial transmit covariance matrix of the apparatus to a victim UE.
  • Processor 2212 may determine at least one recommended or restricted PMI according to the measurement.
  • Processor 2212 may transmit, via transceiver 2216, the at least one recommended or restricted PMI to network apparatus 2220.
  • processor 2212 may compute a receive covariance matrix by listening to an SRS of the victim UE. In some implementations, processor 2212 may compute a receive covariance matrix on a received data and a DM-RS to estimate an uplink transmit covariance matrix. In some implementations, processor 2212 may compute a receive and transmit covariance matrix according to adjacent band measurements.
  • processor 2212 may obtain modulation information associated with an aggressor UE from network apparatus 2220 or through a blind detection. Processor 2212 may measure, via transceiver 2216, a reference signal of the aggressor UE according to the modulation information. Processor 2212 may perform a CLI strategy according to the reference signal and the modulation information associated with the aggressor UE, or according to a command from network apparatus 2220.
  • the CLI strategy may comprise at least of treating a CLI of the aggressor UE as a noise to decode a message for the apparatus, jointly demapping messages for the apparatus and the aggressor UE, and rejecting a CLI of the aggressor UE to decode a message for the apparatus.
  • processor 2212 may blindly detect the modulation information associated with the aggressor UE according to a modulation configuration from network apparatus 2220.
  • processor 2212 may receive, via transceiver 2216, a request from network apparatus 2220. Processor 2212 may transmit, via transceiver 2216, a recommended modulation for the aggressor UE to network apparatus 2220 according to the request.
  • processor 2212 may receive, via transceiver 2216, a request from the network node to request CSI associated with the aggressor UE.
  • Processor 2212 may measure a reference signal from the aggressor UE to determine the CSI associated with the aggressor UE.
  • Processor 2212 may report, via transceiver 2216, the CSI associated with the aggressor UE to network apparatus 2220.
  • processor 2222 may obtain sharing information from a second network node. Processor 2222 may determine a modulation configuration for at least one communication apparatus 2210 communicating with network apparatus 2220 according to the sharing information. Processor 2222 may transmit, via transceiver 2226, the modulation configuration to the at least one communication apparatus 2210.
  • the sharing information may comprise modulation information associated with an aggressor UE communicating with the second network node.
  • processor 2222 may transmit, via transceiver 2226, a request to the at least one communication apparatus 2210 to request a recommended modulation for the aggressor UE.
  • Processor 2222 may receive, via transceiver 2226, the recommended modulation from the at least one communication apparatus 2210.
  • Processor 2222 may transmit, via transceiver 2226, the recommended modulation to the second network node.
  • Processor 2222 may receive, via transceiver 2226, the modulation information associated with the aggressor UE from the second network node.
  • Processor 2222 may transmit, via transceiver 2226, the modulation information associated with the aggressor UE to the at least one communication apparatus 2210.
  • the sharing information may comprise joint modulation information associated the at least one communication apparatus 2210 and an aggressor UE communicating with the second network node.
  • processor 2222 may transmit, via transceiver 2226, a request to the at least one communication apparatus 2210 to request CSI associated with the aggressor UE.
  • Processor 2222 may receive, via transceiver 2226, the CSI associated with the aggressor UE from the at least one communication apparatus 2210.
  • Processor 2222 may determine the joint modulation information according to the CSI associated with the aggressor UE.
  • Processor 2222 may determine modulation information associated with the aggressor UE according to the joint modulation information.
  • Processor 2222 may transmit, via transceiver 2226, transmit the modulation information associated with the aggressor UE to the at least one communication apparatus 2210.
  • Processor 2222 may transmit, via transceiver 2226, transmit a command to the at least one communication apparatus 2210 according to the joint modulation information, wherein the command indicates at least one CLI strategy for the at least one communication apparatus 2210.
  • FIG. 23 illustrates an example process 2300 in accordance with an implementation of the present disclosure.
  • Process 2300 may be an example implementation of above scenarios/schemes, whether partially or completely, with respect to reducing CLI with the present disclosure.
  • Process 2300 may represent an aspect of implementation of features of communication apparatus 2210.
  • Process 2300 may include one or more operations, actions, or functions as illustrated by one or more of blocks 2310 and 2320. Although illustrated as discrete blocks, various blocks of process 2300 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 2300 may be executed in the order shown in FIG. 23 or, alternatively, in a different order.
  • Process 2300 may be implemented by communication apparatus 2210 or any suitable UE or machine type devices. Solely for illustrative purposes and without limitation, process 2300 is described below in the context of communication apparatus 2210. Process 2300 may begin at block 2310.
  • process 2300 may involve processor 2212 of communication apparatus 2210 measuring a signal from an aggressor UE to determine PMI information or RI information associated with CLI from the aggressor UE. Process 2300 may proceed from 2310 to 2320.
  • process 2400 may involve processor 2212 of communication apparatus 2210 receiving, via transceiver 2216 of communication apparatus 2210, a request from a network node for triggering a CLI estimation. Process 2400 may proceed from 2410 to 2420.
  • process 2400 may involve processor 2212 performing a measurement to estimate a spatial transmit covariance matrix of the apparatus to a victim UE.
  • Process 2400 may proceed from 2420 to 2430.
  • process 2500 may involve processor 2212 of communication apparatus 2210 obtaining modulation information associated with an aggressor UE from a network node or through a blind detection. Process 2500 may proceed from 2510 to 2520.
  • process 2500 may involve processor 2212 blindly detecting the modulation information associated with the aggressor UE according to a modulation configuration from the network node.
  • process 2500 may involve processor 2212 receiving, via transceiver 2216, a request from the network node to request CSI associated with the aggressor UE.
  • Process 2500 may involve processor 2212 measuring a reference signal from the aggressor UE to determine the CSI associated with the aggressor UE.
  • Process 2500 may involve processor 2212 reporting, via transceiver 2216, the CSI associated with the aggressor UE to the network node.
  • FIG. 26 illustrates an example process 2600 in accordance with another implementation of the present disclosure.
  • Process 2600 may be an example implementation of above scenarios/schemes, whether partially or completely, with respect to reducing CLI with the present disclosure.
  • Process 2600 may represent an aspect of implementation of features of network apparatus 2220.
  • Process 2600 may include one or more operations, actions, or functions as illustrated by one or more of blocks 2610, 2620 and 2630. Although illustrated as discrete blocks, various blocks of process 2600 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 2600 may be executed in the order shown in FIG. 26 or, alternatively, in a different order.
  • Process 2600 may be implemented by network apparatus 2220 or any base stations or network nodes. Solely for illustrative purposes and without limitation, process 2600 is described below in the context of network apparatus 2220. Process 2600 may begin at block 2610.
  • process 2600 may involve processor 2222 determining a modulation configuration for at least one UE communicating with the first network node according to the sharing information. Process 2600 may proceed from 2620 to 2630.
  • process 2600 may involve processor 2222 transmitting, via transceiver 2226 of network apparatus 2220, the modulation configuration to the at least one UE.
  • process 2600 may involve processor 2222 transmitting, via transceiver 2226, the modulation information associated with the aggressor UE to the at least one UE.
  • process 2600 may involve processor 2222 transmitting, via transceiver 2226, a request to the at least one UE to request a recommended modulation for the aggressor UE.
  • Process 2600 may involve processor 2222 receiving, via transceiver 2226, the recommended modulation from the at least one UE.
  • Process 2600 may involve processor 2222 transmitting, via transceiver 2226, the recommended modulation to the second network node.
  • Process 2600 may involve processor 2222 receiving, via transceiver 2226, the modulation information associated with the aggressor UE from the second network node.
  • Process 2600 may involve processor 2222 transmitting, via transceiver 2226, the modulation information associated with the aggressor UE to the at least one UE.
  • process 2600 may involve processor 2222 transmitting, via transceiver 2226, a request to the at least one UE to request CSI associated with the aggressor UE.
  • Process 2600 may involve processor 2222 receiving, via transceiver 2226, the CSI associated with the aggressor UE from the at least one UE.
  • Process 2600 may involve processor 2222 determining the joint modulation information according to the CSI associated with the aggressor UE.
  • Process 2600 may involve processor 2222 determining modulation information associated with the aggressor UE according to the joint modulation information.
  • Process 2600 may involve processor 2222 transmitting, via transceiver 2226, the modulation information associated with the aggressor UE to the at least one UE.
  • Process 2600 may involve processor 2222 transmitting, via transceiver 2226, a command to the at least one UE according to the joint modulation information, wherein the command indicates at least one CLI strategy for the at least one UE.
  • any two components so associated can also be viewed as being “operably connected” , or “operably coupled” , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being “operably couplable” , to each other to achieve the desired functionality.
  • operably couplable include but are not limited to physically mateable and/or physically interacting components and/or wirelessly interactable and/or wirelessly interacting components and/or logically interacting and/or logically interactable components.

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

Abstract

L'invention concerne diverses solutions destinées à réduire l'interférence de liaison croisée (CLI) par rapport à un équipement utilisateur et à un nœud de réseau dans des communications mobiles. Un appareil peut mesurer un signal provenant d'un équipement utilisateur (UE) agresseur afin de déterminer des informations d'indicateur de matrice de précodage (PMI) ou des informations d'indicateur de rang (RI) associées à une CLI provenant de l'UE agresseur. L'appareil peut transmettre un rapport de mesure contenant les informations de PMI ou les informations de RI à un nœud de réseau.
PCT/CN2024/091759 2024-01-11 2024-05-08 Procédés et appareil de réduction d'interférence de liaison croisée dans des communications mobiles Pending WO2025148199A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160014791A1 (en) * 2013-03-14 2016-01-14 Telefonaktiebolaget L M Ericsson(Publ) Methods Radio Network Nodes and User Equipment for Alleviating Interference in a Radio Communication Network
US20230179380A1 (en) * 2020-06-12 2023-06-08 Min Huang Interference rank indication by a victim node in full duplex
US20230387990A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Cross link interference based channel state information reporting
US20230388837A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Enhanced channel state feedback reporting
US20230387989A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Reporting configuration for cross link interference based channel state information

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160014791A1 (en) * 2013-03-14 2016-01-14 Telefonaktiebolaget L M Ericsson(Publ) Methods Radio Network Nodes and User Equipment for Alleviating Interference in a Radio Communication Network
US20230179380A1 (en) * 2020-06-12 2023-06-08 Min Huang Interference rank indication by a victim node in full duplex
US20230387990A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Cross link interference based channel state information reporting
US20230388837A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Enhanced channel state feedback reporting
US20230387989A1 (en) * 2022-05-27 2023-11-30 Qualcomm Incorporated Reporting configuration for cross link interference based channel state information

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VIVO: "Potential enhancements on dynamic/flexible TDD", 3GPP DRAFT; R1-2302485, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 1, no. e-Meeting; 20230417 - 20230426, 7 April 2023 (2023-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052351967 *

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