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WO2024230744A1 - Procédés et appareil de mesures de rejet d'interférence de liaison croisée dans communications mobiles - Google Patents

Procédés et appareil de mesures de rejet d'interférence de liaison croisée dans communications mobiles Download PDF

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Publication number
WO2024230744A1
WO2024230744A1 PCT/CN2024/091762 CN2024091762W WO2024230744A1 WO 2024230744 A1 WO2024230744 A1 WO 2024230744A1 CN 2024091762 W CN2024091762 W CN 2024091762W WO 2024230744 A1 WO2024230744 A1 WO 2024230744A1
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WO
WIPO (PCT)
Prior art keywords
cli
processor
receiver
assistant information
cqi
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/CN2024/091762
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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 Singapore Pte Ltd
MediaTek Inc
Original Assignee
MediaTek Singapore Pte Ltd
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 Singapore Pte Ltd, MediaTek Inc filed Critical MediaTek Singapore Pte Ltd
Priority to CN202480031250.3A priority Critical patent/CN121128215A/zh
Publication of WO2024230744A1 publication Critical patent/WO2024230744A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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

  • the present disclosure is generally related to mobile communications and, more particularly, to cross-link interference (CLI) rejection with respect to user equipment (UE) and network apparatus in mobile communications.
  • CLI cross-link interference
  • 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 rejection is an important operation to a communication apparatus in the wireless network.
  • the victim UE may only perform CLI rejection according to the received data without information for CLI. It may lead to lower performance and lower CLI rejection capability of the victim UE. For example, the victim UE only can build a covariance of interference by averaging the observed data to reject CLI.
  • One objective of the present disclosure is to propose schemes, concepts, designs, systems, methods and apparatus pertaining to cross-link interference (CLI) rejection with respect to user equipment and network apparatus in mobile communications. It is believed that the above-described issue would be avoided or otherwise alleviated by implementing one or more of the proposed schemes described herein.
  • CLI cross-link interference
  • a method may involve an apparatus receiving assistant information from a network node of a wireless network, wherein the assistant information indicates reference signals transmitted by at least one another apparatus.
  • the method may also involve the apparatus performing a measurement for CLI according to the assistant information.
  • the method may further involve the apparatus performing a CLI rejection according to the measurement.
  • a method may involve a network node transmitting assistant information to a user equipment (UE) , wherein the assistant information indicates reference signals transmitted by at least one another UE.
  • the method may also involve the apparatus receiving a measurement report associated with the assistant information from the UE.
  • an apparatus may involve a transceiver which, during operation, wirelessly communicates with at least one network node.
  • the apparatus may also involve a processor communicatively coupled to the transceiver such that, during operation.
  • the processor may receive, via the transceiver, assistant information from the network node, wherein the assistant information indicates reference signals transmitted by at least one another apparatus.
  • the processor may also perform a measurement for CLI according to the assistant information.
  • the processor may further perform a CLI rejection according to the measurement.
  • 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 communication environment in which various solutions and schemes in accordance with the present disclosure may be implemented.
  • FIG. 2 is a diagram depicting an example scenario for a CLI rejection procedure in accordance with implementations of the present disclosure.
  • FIG. 3 is a block diagram of an example communication system in accordance with an implementation of the present disclosure.
  • FIG. 4 is a flowchart of an example process in accordance with an implementation of the present disclosure.
  • FIG. 5 is a flowchart of an example process in accordance with another implementation of the present disclosure.
  • Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and/or solutions pertaining to cross-link interference (CLI) rejection with respect to user equipment and network apparatus in mobile communications.
  • CLI cross-link interference
  • a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
  • FIG. 1 illustrates an example scenario 100 of a wireless communication environment having two types of interference in accordance with implementations of the present disclosure.
  • the wireless communication environment may comprise at least two gNBs 110 and 120 (i.e., network nodes) and at least three UEs 130, 140 and 150.
  • the gNB 110 may transmit downlink (DL) signals to the UE 140 and the UE 130 may transmit uplink (UL) signals to the gNB 110.
  • the UE 150 may transmit UL signals to the gNB 120.
  • the gNB-to-gNB DL-UL interference (which is one type of CLI interference) may occur.
  • the DL signals from the gNB 110 may interfere the UL signals from the UE 150.
  • the UE-to-UE UL-DL interference (which is another type of CLI interference) may occur.
  • the UL signals from the UE 130 may interfere the DL signals from the gNB 110, i.e., intra-cell inter-UE CLI.
  • the UL signals from the UE 150 may interfere the DL signals from the gNB 110, i.e., inter-cell inter-UE CLI.
  • SBFD subband full-duplex
  • TDD time-division duplexing
  • UL transmission of the UE 130 may interfere the DL transmission of the UE 140 (named as a victim UE) .
  • the inter-subband CLI may be occurred in half-duplex (HD) UEs scenario or full-duplex (FD) UEs scenario.
  • the gNBs 110 and 120, and the UEs 130, 140 and 150 may implement various schemes pertaining to CLI rejection in accordance with the present disclosure, as described below. It is noteworthy that, while the various proposed schemes may be individually or separately described below, in actual implementations some or all of the proposed schemes may be utilized or otherwise implemented jointly. Of course, each of the proposed schemes may be utilized or otherwise implemented individually or separately.
  • FIG. 2 illustrates an example scenario 200 for a CLI rejection procedure in accordance with implementations of the present disclosure.
  • Scenario 200 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 e.g., the UE 140
  • the network node e.g., the gNB 110
  • the victim UE may perform a measurement for CLI according to the assistant information.
  • the victim UE may perform a CLI rejection according to the measurement.
  • the victim UE may receive the assistant information from the network node through a broadcast message or a high lay signaling (e.g., radio resource control (RRC) configuration) .
  • RRC radio resource control
  • the assistant information may indicate the reference signals transmitted by at least one aggressor UE (e.g., UE 130) .
  • the assistant information may indicate at least one of a time-domain location and a frequency-domain location of the reference signals transmitted by the aggressor UE.
  • the reference signals may comprise at least one of a sounding reference signal (SRS) and an uplink-demodulation reference signal (UL-DMRS) .
  • SRS sounding reference signal
  • UL-DMRS uplink-demodulation reference signal
  • the victim UE can obtain the SRS and UL-DMRS configuration of the aggressor UE according to the assistant information.
  • the SRS and UL-DMRS configuration may be long term and stable.
  • the victim UE can listen to the source of interference according to the SRS and UL- DMRS configuration to obtain the information on the source of interference.
  • the victim UE may obtain some information on the directions of the interference according to the assistant information, e.g., the UE may capture the information from the covariance matrices which are measured according to the assistant information.
  • the victim UE may listen to the source of the CLI, estimate the channel, store samples, and/or build a robust receiver to reject the CLI from the aggressor UE.
  • the victim UE may reject the CLI through an interference rejection combining (IRC) technology, e.g., linear minimum mean square error (MMSE) .
  • IRC interference rejection combining
  • MMSE linear minimum mean square error
  • the network node may further transmit the assistant information to the victim UE to indicate whether a scheduled DL resource is interfered by CLI or not. Then, the victim UE can determine whether to activate/deactivate the CLI rejection according to the assistance information. When the victim UE determines that a received DL resource is not interfered by CLI (i.e., the DL reception is CLI-free) according to the assistant information, the victim UE may deactivate the CLI rejection on the DL resource.
  • CLI i.e., the DL reception is CLI-free
  • the assistant information from the network node may indicate that the scheduled DL resource is not interfered by CLI. Then, the victim UE may not activate the CLI rejection according to the assistance information.
  • the network node determines that the aggressor UE is sufficiently far apart from each other, for instance when used together with other CLI management strategy (e.g., scheduling) . The network node may expect the resulting CLI to be marginal.
  • the network node may not have enough information to accurately determine whether the DL resource is interfered by CLI or not, or to determine which CLI management method is suitable for victim UE currently. Therefore, the victim UE may further report at least one of channel quality information (CQI) and a CLI-handling capability to the network node.
  • CQI channel quality information
  • the network node may configure or adopt a suitable CLI management method (e.g., at least one of a CLI rejection, a scheduling, a precoding matrix indicator (PMI) recommendation, a PMI restriction, a rank recommendation, a rank restriction and a friendly PMI) according to the CQI and CLI-handling capability from the victim UE to mitigate the CLI of the victim UE.
  • a suitable CLI management method e.g., at least one of a CLI rejection, a scheduling, a precoding matrix indicator (PMI) recommendation, a PMI restriction, a rank recommendation, a rank restriction and a friendly PMI
  • the CQI may comprise a first report for a receiver with CLI (e.g., CLI-robust receiver) and a second report for a receiver without CLI (e.g., non-CLI-robust receiver) .
  • the PMI or rank indicator (RI) may further comprise a first report for a receiver with CLI and a second report for a receiver without CLI.
  • the CQI may comprise at least one of a wideband CQI for a receiver without CLI, a delta wideband CQI for a receiver with CLI, a subband CQI for a receiver without CLI, and a delta subband CQI for a receiver with CLI.
  • the CLI-handling capability may be part of capability report of the victim UE.
  • the support of advanced receiver can be reported as a UE capability.
  • the CLI-handling capability may be a quantitative gain, e.g., an Rx gain of the victim UE or the gain of CLI-robust receiver over non-CLI-robust receiver.
  • the victim UE may also determine the PMI recommendation or rank recommendation according to the CLI rejection result. For example, the victim UE may perform the CLI rejection to remove/reject major interferer, and then perform PMI recommendation for remaining CLI (e.g., second major interferer) .
  • CLI Complementary infrastructure
  • FIG. 3 illustrates an example communication system 300 having at least an example communication apparatus 310 and an example network apparatus 320 in accordance with an implementation of the present disclosure.
  • Each of communication apparatus 310 and network apparatus 320 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to CLI rejection, 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 process 400 and process 500 described below.
  • Communication apparatus 310 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 310 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 310 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 310 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center.
  • communication apparatus 310 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 310 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 310 are neither shown in FIG. 3 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 320 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 320 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 320 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 320 may include at least some of those components shown in FIG.
  • Network apparatus 320 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 320 are neither shown in FIG. 3 nor described below in the interest of simplicity and brevity.
  • components not pertinent to the proposed scheme of the present disclosure e.g., internal power supply, display device and/or user interface device
  • each of processor 312 and processor 322 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 312 and processor 322, each of processor 312 and processor 322 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure.
  • each of processor 312 and processor 322 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and/or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure.
  • each of processor 312 and processor 322 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 310) and a network (e.g., as represented by network apparatus 320) in accordance with various implementations of the present disclosure.
  • communication apparatus 310 may also include a transceiver 316 coupled to processor 312 and capable of wirelessly transmitting and receiving data.
  • communication apparatus 310 may further include a memory 314 coupled to processor 312 and capable of being accessed by processor 312 and storing data therein.
  • network apparatus 320 may also include a transceiver 326 coupled to processor 322 and capable of wirelessly transmitting and receiving data.
  • network apparatus 320 may further include a memory 324 coupled to processor 322 and capable of being accessed by processor 322 and storing data therein. Accordingly, communication apparatus 310 and network apparatus 320 may wirelessly communicate with each other via transceiver 316 and transceiver 326, respectively.
  • each of communication apparatus 310 and network apparatus 320 is provided in the context of a mobile communication environment in which communication apparatus 310 is implemented in or as a communication apparatus or a UE and network apparatus 320 is implemented in or as a network node of a communication network.
  • processor 312 may receive, via transceiver 316, assistant information from network apparatus 320 of a wireless network, wherein the assistant information may indicate reference signals transmitted by at least one another apparatus.
  • Processor 312 may perform a measurement for CLI according to the assistant information.
  • Processor 312 may perform a CLI rejection according to the measurement.
  • the assistant information may be received through a broadcast message or a high layer signaling.
  • the assistant information may indicate at least one of a time-domain location and a frequency-domain location of the reference signals.
  • the reference signals may comprise at least one of an SRS and an UL-DMRS.
  • the assistant information may indicate whether a scheduled DL resource is interfered by CLI or not.
  • Processor 312 may determine whether to activate the CLI rejection according to the assistance information.
  • processor 312 may receive, via transceiver 316, a resource that is not interfered by CLI. Processor 312 may deactivate the CLI rejection on the resource.
  • processor 312 may report, via transceiver 316, at least one of CQI and a CLI-handling capability to network apparatus 320.
  • Processor 312 may receive, via transceiver 316, a configuration for CLI management from network apparatus 320 in response to the reporting.
  • the CQI may comprise a first report for a receiver with CLI and a second report for a receiver without CLI.
  • the CQI may comprise at least one of a wideband CQI for a receiver without CLI, a delta wideband CQI for a receiver with CLI, a subband CQI for a receiver without CLI and a delta subband CQI for a receiver with CLI.
  • processor 322 may transmit, via transceiver 326, assistant information to communication apparatus 310, wherein the assistant information indicates reference signals transmitted by at least one another UE.
  • Processor 322 may receive, via transceiver 326, a measurement report associated with the assistant information from communication apparatus 310.
  • the assistant information may be transmitted through a broadcast message or a high layer signaling.
  • the assistant information may indicate at least one of a time-domain location and a frequency-domain location of the reference signals.
  • the assistant information may indicate whether a scheduled DL resource is interfered by CLI or not.
  • Processor 322 may indicate whether to activate the CLI rejection in the assistance information.
  • processor 322 may receive, via transceiver 326, at least one of CQI and a CLI-handling capability from communication apparatus 310. Processor 322 may transmit, via transceiver 326, a configuration for CLI management to communication apparatus 310 in response to the receiving.
  • the CQI may comprise a first report for a receiver with CLI and a second report for a receiver without CLI.
  • the CQI may comprise at least one of a wideband CQI for a receiver without CLI, a delta wideband CQI for a receiver with CLI, a subband CQI for a receiver without CLI and a delta subband CQI for a receiver with CLI.
  • FIG. 4 illustrates an example process 400 in accordance with an implementation of the present disclosure.
  • Process 400 may be an example implementation of above scenarios/schemes, whether partially or completely, with respect to CLI rejection with the present disclosure.
  • Process 400 may represent an aspect of implementation of features of communication apparatus 310.
  • Process 400 may include one or more operations, actions, or functions as illustrated by one or more of blocks 410, 420 and 430. Although illustrated as discrete blocks, various blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 400 may be executed in the order shown in FIG. 4 or, alternatively, in a different order.
  • Process 400 may be implemented by communication apparatus 310 or any suitable UE or machine type devices. Solely for illustrative purposes and without limitation, process 400 is described below in the context of communication apparatus 310.
  • Process 400 may begin at block 410.
  • process 400 may involve processor 312 of communication apparatus 310 receiving, via transceiver 316, assistant information from a network node, wherein the assistant information may indicate reference signals transmitted by at least one another apparatus.
  • Process 400 may proceed from 410 to 420.
  • process 400 may involve processor 312 performing a measurement for CLI according to the assistant information.
  • Process 400 may proceed from 420 to 430.
  • process 400 may involve processor 312 performing a CLI rejection according to the measurement.
  • process 400 may involve processor 312 determining whether to activate the CLI rejection according to the assistance information.
  • process 400 may involve processor 312 receiving, via transceiver 316, a resource that is not interfered by CLI.
  • Process 400 may involve processor 312 deactivating the CLI rejection on the resource.
  • process 400 may involve processor 312 reporting, via transceiver 316, at least one of CQI and a CLI-handling capability to the network node.
  • Process 400 may involve processor 312 receiving, via transceiver 316, a configuration for CLI management from the network node in response to the reporting.
  • FIG. 5 illustrates an example process 500 in accordance with another implementation of the present disclosure.
  • Process 500 may be an example implementation of above scenarios/schemes, whether partially or completely, with respect to CLI rejection with the present disclosure.
  • Process 500 may represent an aspect of implementation of features of network apparatus 320.
  • Process 500 may include one or more operations, actions, or functions as illustrated by one or more of blocks 510 and 520. Although illustrated as discrete blocks, various blocks of process 500 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 500 may be executed in the order shown in FIG. 5 or, alternatively, in a different order.
  • Process 500 may be implemented by network apparatus 320 or any base stations or network nodes. Solely for illustrative purposes and without limitation, process 500 is described below in the context of network apparatus 320.
  • Process 500 may begin at block 510.
  • process 500 may involve processor 322 of network apparatus 320 transmitting, via transceiver 326, assistant information to a UE, wherein the assistant information indicates reference signals transmitted by at least one another UE.
  • Process 500 may proceed from 510 to 520.
  • process 500 may involve processor 322 receiving, via transceiver 326, a measurement report associated with the assistant information from the UE.
  • process 500 may involve processor 322 indicating whether to activate the CLI rejection in the assistance information.
  • process 500 may involve processor 322 receiving, via transceiver 326, at least one of CQI and a CLI-handling capability from the UE.
  • Process 500 may involve processor 322 transmitting, via transceiver 326, a configuration for CLI management to the UE in response to the receiving.
  • 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 pour un rejet d'interférence de liaison croisée (CLI) par rapport à un équipement utilisateur et à un nœud de réseau dans des communications mobiles. Un appareil peut recevoir des informations d'assistant en provenance d'un nœud de réseau. Les informations d'assistant peuvent indiquer des signaux de référence transmis par au moins un autre appareil. L'appareil peut effectuer une mesure de CLI selon les informations d'assistant. L'appareil peut effectuer un rejet de CLI selon la mesure.
PCT/CN2024/091762 2023-05-08 2024-05-08 Procédés et appareil de mesures de rejet d'interférence de liaison croisée dans communications mobiles Pending WO2024230744A1 (fr)

Priority Applications (1)

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CN202480031250.3A CN121128215A (zh) 2023-05-08 2024-05-08 用于移动通信中交叉链路干扰抑制的方法和设备

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US202363500638P 2023-05-08 2023-05-08
US63/500,638 2023-05-08

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US20180152949A1 (en) * 2015-07-31 2018-05-31 Huawei Technologies Co., Ltd. Interference cancellation method, user equipment, and base station
US20220104214A1 (en) * 2019-01-23 2022-03-31 Apple Inc. Data channel mapping type and dm-rs configuration to enable l1 cli measurement and reporting
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