WO2024148542A1 - Procédés, dispositifs et support de communication - Google Patents

Procédés, dispositifs et support de communication Download PDF

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Publication number
WO2024148542A1
WO2024148542A1 PCT/CN2023/071814 CN2023071814W WO2024148542A1 WO 2024148542 A1 WO2024148542 A1 WO 2024148542A1 CN 2023071814 W CN2023071814 W CN 2023071814W WO 2024148542 A1 WO2024148542 A1 WO 2024148542A1
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WO
WIPO (PCT)
Prior art keywords
candidate cells
terminal device
candidate
monitoring
timing
Prior art date
Application number
PCT/CN2023/071814
Other languages
English (en)
Inventor
Zhen He
Yukai GAO
Peng Guan
Gang Wang
Original Assignee
Nec Corporation
Gang Wang
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 Nec Corporation, Gang Wang filed Critical Nec Corporation
Priority to PCT/CN2023/071814 priority Critical patent/WO2024148542A1/fr
Publication of WO2024148542A1 publication Critical patent/WO2024148542A1/fr

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Classifications

    • 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
    • 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

Definitions

  • Example embodiments of the present disclosure generally relate to the field of communication techniques and in particular, to methods, devices, and medium for monitoring candidate cells.
  • embodiments of the present disclosure provide methods, devices and computer storage medium for monitoring candidate cells.
  • a terminal device comprising a processor that is configured to cause the terminal device to: receive, from a network device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells; receive, from the network device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells; in accordance with a determination that the second set of candidate cells overlaps with the first set of candidate cells, determine a third set of candidate cells based the first and second sets of candidate cells; and monitor the third set of candidate cells based on the first configuration.
  • RSs reference signals
  • CSI channel state information
  • a network device comprising a processor that is configured to cause the terminal device to: transmit, to a terminal device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells by the terminal device; transmit, to the terminal device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells by the terminal device; and receive, from the terminal device, monitored result of at least one target candidate cell in a third set of candidate cells, wherein the third set of candidate cells is determined based on the first and second sets of candidate cells, if the second set of candidate cells overlaps with the first set of candidate cells.
  • RSs reference signals
  • CSI channel state information
  • a communication method comprises: receiving, at a terminal device and from a network device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells; receiving, from the network device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells; in accordance with a determination that the second set of candidate cells overlaps with the first set of candidate cells, determining a third set of candidate cells based the first and second sets of candidate cells; and monitoring the third set of candidate cells based on the first configuration.
  • RSs reference signals
  • CSI channel state information
  • a communication method comprises: transmitting, at a terminal device and to a terminal device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells by the terminal device; transmitting, to the terminal device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells by the terminal device; and receiving, from the terminal device, monitored result of at least one target candidate cell in a third set of candidate cells, wherein the third set of candidate cells is determined based on the first and second sets of candidate cells, if the second set of candidate cells overlaps with the first set of candidate cells.
  • RSs reference signals
  • CSI channel state information
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the first, or second aspect.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling flow of reporting angle information in accordance with some embodiments of the present disclosure
  • FIG. 3 illustrates a schematic diagram of candidate cells according to some example embodiments of the present disclosure
  • FIG. 4 illustrates a schematic diagram of timings according to some example embodiment of the present disclosure
  • FIG. 5 illustrates a schematic diagram of a predetermined time duration according to some example embodiments of the present disclosure
  • FIG. 6 illustrates a flowchart of a method implemented at a terminal device according to some example embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of a method implemented at a network device according to some example embodiments of the present disclosure.
  • FIG. 8 illustrates a simplified block diagram of an apparatus 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, devices on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV)
  • UE user equipment
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • network device refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a low power node such as a fe
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g., FR1 (e.g., 450 MHz to 6000 MHz) , FR2 (e.g., 24.25GHz to 52.6GHz) , frequency band larger than 100 GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • FR1 e.g., 450 MHz to 6000 MHz
  • FR2 e.g., 24.25GHz to 52.6GHz
  • THz Tera Hertz
  • the terminal device may have more than one connection 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 embodiments of the present disclosure may be performed in test equipment, e.g., signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the 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 or 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.
  • the term “resource, ” “transmission resource, ” “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • the term “Channel State Information (CSI) ” used herein may refer to channel properties of a communication link. CSI describes how a signal propagate from the transmitter to the receiver and represents the combined effect of, for example, scattering, fading, and power decay with distance.
  • the term “CSI report” may refer to a report that indicate how good or bad the channel is.
  • a user equipment can be configured with up to 7 non-serving cells.
  • a CSI report may be associated with one or more synchronization signal and physical broadcast channel (SSB) sets configured for non-serving cell and/or serving cell.
  • the CSI report may include both measured results of the serving cell and measured results of one or more non-serving cells.
  • Persistent (P) CSI reporting, semi-persistent (SP) CSI reporting and aperiodic (AP) CSI reporting triggered by network (NW) and UE-event triggered report may be configured simultaneously.
  • a terminal device receives a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells.
  • the terminal device also receives a first signaling that triggers a CSI report for monitoring a second set of candidate cells.
  • the terminal device determines a third set of candidate cells based the first and second sets of candidate cells.
  • the terminal device monitors the third set of candidate cells based on the first configuration. In this way, it can avoid unnecessary cell monitoring, thereby reducing power consumption.
  • the term “candidate cell” may refer to a neighbor cell or non-serving cell that is different from the serving cell. And it can be represented or indicated by an indicator, e.g., physical cell identifier (PCI) or candidate cell PCI.
  • PCI physical cell identifier
  • candidate cell PCI is used to as the indicator of the candidate cell.
  • 1 candidate cell corresponds to 1 PCI, which is configured by NW.
  • FIG. 1 illustrates a schematic diagram of an example communication environment 100 in which example embodiments of the present disclosure can be implemented.
  • a plurality of communication devices including a terminal device 110 and a network device 120, can communicate with each other.
  • the terminal device 110 may be a UE and the network device 120 may be a base station serving the UE.
  • the serving area of the network device 120 may be called a cell 102.
  • the communication environment 100 may include any suitable number of devices configured to implementing example embodiments of the present disclosure. Although not shown, it would be appreciated that one or more additional devices may be located in the cell 102, and one or more additional cells may be deployed in the communication environment 100. It is noted that although illustrated as a network device, the network device 120 may be another device than a network device. Although illustrated as a terminal device, the terminal device 110 may be other device than a terminal device.
  • terminal device 110 operating as a UE
  • network device 120 operating as a base station
  • operations described in connection with a terminal device may be implemented at a network device or other device
  • operations described in connection with a network device may be implemented at a terminal device or other device.
  • a link from the network device 120 to the terminal device 110 is referred to as a downlink (DL)
  • a link from the terminal device 110 to the network device 120 is referred to as an uplink (UL)
  • the network device 120 is a transmitting (TX) device (or a transmitter)
  • the terminal device 110 is a receiving (RX) device (or a receiver)
  • the terminal device 110 is a TX device (or a transmitter) and the network device 120 is a RX device (or a receiver) .
  • the communications in the communication environment 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like.
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • LTE-Evolution LTE-Advanced
  • NR New Radio
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • 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.
  • FIG. 2 illustrates a signaling flow 200 of reporting angle information in accordance with some embodiments of the present disclosure.
  • the signaling flow 200 will be discussed with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120. It is noted that FIG. 2 is only an example embodiment.
  • the network device 120 transmits (2010) a first configuration that indicates at least one set of RSs used for monitoring a first set of candidate cells to the terminal device 110.
  • the terminal device 110 may be configured or indicated with the at least one set of RSs that are used for monitoring the first set of candidate cells.
  • the set of RSs may include a set of SSBs.
  • the set of RSs may include a set of channel state information-reference signals (CSI-RSs) .
  • CSI-RSs channel state information-reference signals
  • Each RS or RS set may be associated with a candidate cell PCI.
  • the first set 3110 of candidate cells may include cells 310, 320, 330 and 340. It is noted that the number of cells shown in FIG. 3 is only an example not limitation.
  • the first set of candidate cells may include any proper number of candidate cells.
  • the network device 120 transmits (2020) a first signaling to the terminal device 110.
  • the first signaling triggers a CSI report for monitoring a second set of candidate cells.
  • the second set 3120 of candidate cells may include cells 310 and 320. It is noted that the number of cells in the second set of candidate cells shown in FIG. 3 is only an example not limitation.
  • the second set of candidate cells may include any proper number of candidate cells.
  • the CSI report for monitoring the second set of candidate cell may refer to a CSI report is used for acquiring the results of monitoring the second set candidate cells, i.e., the qualities corresponding to the RS (s) associated with the second set of candidate cell (associated with the CSI report) .
  • the RS (s) associated with the second set of candidate cells may derive from CSI-SSB-ResourceSet, a list of CSI-RS resource configuration, or a list of CSI-RS resource configuration per PCI in CSI-ResourceConfig in CSI-ReportConfig.
  • the first signaling may include a configuration (referred to as “second configuration” hereinafter) that configures a periodic channel state information (CSI) report for monitoring the second set of candidate cells.
  • the first signaling may be a radio resource control (RRC) signaling.
  • the first signaling may include an indication (referred to as “first indication” hereinafter) that activates a semi-persistent CSI report for monitoring the second set of candidate cells.
  • the first signaling may be a medium access control control element (MAC-CE) or downlink control information (DCI) .
  • the first signaling may include an indication (referred to as “second indication” hereinafter) that triggers an aperiodic CSI report for monitoring the second set of candidate cells.
  • the first signaling may be DCI.
  • the terminal device 110 determines (2030) a third set of candidate cells based on the first and second sets of candidate cells.
  • the second set of candidate cells may partially overlap with the first set of candidate cells.
  • the third set of candidate cells may include one or more candidate cells in the first set of candidate cells that do not overlap with the second set of candidate cells.
  • the terminal device 110 may select, from the first set of candidate cells, one or more candidate cells that are included in the second set of candidate cells.
  • the first set 3110 of candidate cells includes the cells 310, 320, 330 and 340 and the second set 3120 of candidate includes the cells 310 and 320.
  • the third set 3130 of candidate cells includes the cells 330 and 340. It is noted that the number of cells in the third set of candidate cells shown in FIG. 3 is only an example not limitation.
  • the third set of candidate cells may include any proper number of candidate cells.
  • the second set of candidate cells may fully overlap with the first set of candidate cells.
  • the terminal device 110 may stop monitoring the first set of candidate cells.
  • the third set of candidate cells may be regarded as null. In other words, the third set of candidate cells may include zero candidate cell.
  • the terminal device 110 monitors (2040) the third set of candidate cells based on the first configuration. For example, as shown in FIG. 3, the terminal device 110 may monitor the candidate cells 330 and 340 and stop monitoring the candidate cells 310 and 320. In other words, the terminal device 110 only needs to monitor a subset of the first set of candidate cells instead of the whole first set of candidate cells. In this way, it can avoid unnecessary candidate cell monitoring, UE power consumption and signaling for reconfiguring the candidate cells to be monitored (in UE-event triggered reporting) .
  • the terminal device 110 may receive one or more RSs indicated in the first configuration.
  • the terminal device 110 may measure qualities corresponding to the one or more RSs based on the received one or more RSs.
  • the first configuration may indicate the sets of RSs for the cells 310, 320, 330 and 340.
  • the terminal device 110 may receive the set of RSs for the cells 330 and 340 (i.e., the third set of candidate cells) based on the first configuration.
  • the terminal device 110 may measure qualities corresponding to the set of RSs for the cells 330 and 340.
  • the terminal device 110 may measure reference signal received power (RSRP) based on the received one or more RS.
  • the qualities may also include one or more of: L1 signal interference to noise ratio (SINR) , filtered L1-RSRP, filtered L1- SINR, or SINR.
  • SINR L1 signal interference to noise ratio
  • the terminal device 110 may determine one or more target candidate cells from the third set of candidate cells. For example, the terminal device 110 may identify the one or more target candidate cells from the third set of candidate cells based on some predefined rules or threshold. The one or more target candidate cells may satisfy the predefined rule or threshold. For example, the qualities of the one or more target candidate cells may satisfy a quality threshold.
  • the terminal device 110 may report (2050) monitored results of the one or more target candidate cells to the network device 120.
  • the monitored results may include measured qualities based on received RSs corresponding to the one or more target candidate cells.
  • the terminal device 110 only needs to report to NW the monitored results (i.e., the measure qualities corresponding to the RS (s) that are used for monitoring the target candidate cell (s) ) of the target candidate cell (s) determined from the third set of candidate cells.
  • the terminal device 110 may monitor the third set of candidate cells from the first slot after a timing (referred to as “second timing” hereinafter) that is an application timing of the CSI report.
  • the third set of candidate cells may be monitored from the first slot after the second timing when the first signaling take effect.
  • the first signaling may take effect at the timing 420.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after the timing 420.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after slot
  • u may represent a subcarrier spacing (SCS) configuration for PUCCH
  • u Kmac may represent a SCS configuration for k mac with a value of 0 for frequency range 1
  • k mac may represent a value.
  • a PUCCH with HARQ-ACK information that is corresponding to the PDSCH carrying the first signaling may be transmitted in slot n.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after slot
  • u may represent a SCS configuration for PUCCH
  • u Kmac may represent a SCS configuration for k mac with a value of 0 for frequency range 1
  • k mac may represent a value.
  • a PUCCH with HARQ-ACK information that is corresponding to the PDSCH carrying the first signaling may be transmitted in slot n.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after the PDCCH resource carrying the first signaling.
  • the terminal device 110 may monitor the third set of candidate cells from the first slot after a timing (referred to as “third timing” hereinafter) when the terminal device 110 receives a RS associated with the CSI report.
  • the RS associated with the CSI report may be received at the timing 430.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after the timing 430.
  • the RS may be the first RS resource (for example, in time domain) out of a set of RSs associated with the CSI report.
  • the RS may be the last RS resource out of the set of RSs associated with the CSI report.
  • the terminal device 110 may monitor the third set of candidate cells from the first slot after a timing (referred to as “fourth timing” hereinafter) when the terminal device 110 transmits the CSI report.
  • the CSI report may be transmitted at the timing 440.
  • the terminal device 110 may start monitoring the third set of candidate cells from the first slot after the timing 440.
  • the CSI report may be a N-th CSI report, where N is a positive integer number.
  • the CSI report is a periodic CSI report or a semi-persistent CSI report
  • the CSI report is the first CSI report in time domain.
  • the CSI report may be the first CSI report.
  • the terminal device 110 may monitor the third set of candidate cells from the first slot after a timing (referred to as “fifth timing” hereinafter) that is a last slot within a first predetermined time duration after one of the first, second, third, or fourth timing.
  • the first predetermined time duration is determined based on a range in time domain of the at least one set of RSs associated with the first set of candidate cells.
  • the first predetermined time duration may be determined based on a size of range.
  • the first predefined time duration may be one of: a number (for example, K) of symbols, a number of slots, a number of milliseconds, or a number of seconds.
  • the network device 120 may transmit (2060) a second signaling to the terminal device 110.
  • the second signaling may include a configuration (referred to as “third configuration” hereinafter) that releases the CSI report (for example, P CSI report) .
  • the second signaling may be a RRC signaling.
  • the second signaling may include an indication (referred to as “third indication” hereinafter) that deactivates the CSI report (for example, SP CSI report) .
  • the second signaling may be one of: MAC CE or DCI.
  • the second signaling may include an indication (referred to as “fourth indication” hereinafter) that triggers another CSI report (for example, another AP CSI report) .
  • the second signaling may be a DCI.
  • the terminal device 110 may start a candidate cell monitoring timer.
  • the terminal device 110 may stop monitoring the third set of candidate cells. For example, the terminal device 110 may monitor the third set of candidate cells until a timing (referred to as “sixth timing” hereinafter) when the terminal device 110 receives the second signaling. For example, as shown in FIG. 4, the terminal device 110 may receive the second signaling at the timing 450. The terminal device 110 may stop monitoring the third set of candidate cells after the timing 450. In some embodiments, the third set of candidate cells may be monitored until the slot in which a resource carries the second signaling. In some embodiments, the resource may be a PDSCH resource. Alternatively, the resource may be a PDCCH resource. As mentioned above, the second signaling may be one of: RRC, MAC CE, or DCI.
  • the terminal device 110 may monitor the third set of candidate cells until a timing (referred to as “seventh timing” hereinafter) that is a stopping timing of the CSI report. In other words, the terminal device 110 may stop monitoring the third set of candidate cells after the second signaling take effects.
  • the terminal device 110 may monitor the third set of candidate cells until one of the sixth, seventh or eighth timing. In some embodiments, if the first signaling is received before a fifth predetermined time duration that is before monitoring the first set of candidate cells, the terminal device 110 may monitor the third set of candidate cells. For example, as shown in FIG. 5, the first signaling may be received before the predetermined time duration 510 that is before monitoring the first set of candidate cells. In this case, the terminal device 110 may monitor the third set of candidate cells. If the first signaling is received within the predetermined time duration 510, the terminal device 110 may not monitor the third set of candidate cells.
  • the fourth or fifth predetermined time duration may be based on a period of monitoring the first set of candidate cells.
  • the period may refer to the period of the RSs for monitoring the first set of candidate cells.
  • the fourth or fifth predetermined time duration may be based on time required for the first signaling to take effect. For example, if the first signaling is a RRC signaling, the required time may be 10 ms. Alternatively, if the first signaling is a MAC CE, the required time may be 3ms.
  • the fourth or fifth predetermined time duration may include one of: P symbols, P slots, P ms, or P seconds. In this case, P may be equal to or larger than 0.
  • the terminal device 110 may monitor or stop monitoring the first set of candidate cells from a target timing (for example, one of the sixth, the seventh, or the eighth timing) if the terminal device 110 receives the second signaling before a predefined time duration (e.g., P symbols/slots/ms/s, P ⁇ 0) before the terminal device 110 subsequently or next need have monitored the first set of candidate cells.
  • a target timing for example, one of the sixth, the seventh, or the eighth timing
  • a predefined time duration e.g., P symbols/slots/ms/s, P ⁇ 0
  • the terminal device 110 may monitor the first set of candidate cells from the target timing (for example, one of the sixth, the seventh, or the eighth timing) if the terminal device 110 receives the second signaling before a predefined time duration (e.g., P symbols/slots/ms/s, P ⁇ 0) before UE subsequently or next should have monitored the first set of candidate cells.
  • a predefined time duration e.g., P symbols/slots/ms/s, P ⁇ 0
  • the second signaling may be received during the monitoring of the third set of candidate cells.
  • the terminal device 110 may monitor the first set of candidate cells from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may stop the monitoring of the first set of candidate cells to be stopped from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may monitor the first set of candidate cells from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may continue to stop monitoring the first set of candidate cells from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may determine a fourth set of candidate cells based on the first and second sets of candidate cells.
  • the fourth set of candidate cells may include one or more cells in the first set of candidate cells that overlaps with the second set of candidate cells. For example, as shown in FIG. 3, if the first set 3110 of candidate cells includes cells 310, 320, 330 and 340 and the second set 3120 of candidate cells includes cells 310 and 320, the fourth set of candidate cells may include the cells 310 and 320.
  • the terminal device 110 may set a candidate cell monitoring counter to a predetermined value.
  • the candidate cell monitoring counter may refer to the number of times that upper layers continuously receive a specific indication from lower layers within a predefined time duration.
  • the specific indication may refer to an indication reflecting that the measured/monitored results of at least one candidate cells satisfy some predefined events or conditions.
  • a candidate cell monitoring counter may correspond to a candidate cell, i.e., the candidate cell monitoring counter corresponds to the RS (s) that are used for monitoring the candidate cell.
  • a first candidate cell monitoring counter corresponding to the fourth set of candidate cells may be set to zero.
  • the terminal device 110 may set a second candidate cell monitoring counter corresponding to the first set of candidate cells to be zero.
  • the terminal device 110 may set a third candidate cell monitoring counter corresponding to the first set of candidate cells to be zero. For example, the terminal device 110 may set all candidate cell monitoring counter to zero. Alternatively, the terminal device 110 may set one candidate cell monitoring counter corresponding to the first set of candidate cells to zero. Alternatively, or in addition, the terminal device 110 may stop the candidate cell monitoring timer. The terminal device 110 may consider a candidate cell monitoring procedure successfully completed. In some other embodiments, the terminal device 110 may cancel all candidate cell monitoring procedures for a serving cell.
  • FIG. 6 illustrates a flowchart of a communication method 600 implemented at a terminal device in accordance with some embodiments of the present disclosure.
  • the method 600 may be implemented by the terminal device 110 in FIG. 1.
  • the terminal device 110 receives from the network device 120, a first configuration.
  • the first configuration indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells.
  • RSs reference signals
  • the terminal device 110 receives from the network device 120, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells.
  • the first signaling may include at least one of: a second configuration that configures a periodic channel state information (CSI) report for monitoring the second set of candidate cells, a first indication that activates a semi-persistent CSI report for monitoring the second set of candidate cells, or a second indication that triggers an aperiodic CSI report for monitoring the second set of candidate cells.
  • the terminal device 110 determines a third set of candidate cells based the first and second sets of candidate cells.
  • the third set of candidate cells comprises at least one candidate cell in the first set of candidate cells that does not overlap with the second set of candidate cells.
  • the terminal device 110 monitors the third set of candidate cells based on the first configuration. In some embodiments, if the second set of candidate cells fully overlaps with the first set of candidate cells, the terminal device 110 may cause monitoring of the first set of candidate cells to be stopped.
  • the terminal device 110 may determine at least one target candidate cell from the third set of candidate cells. In this case, the terminal device 110 may report to the network device 120, monitored results of the at least one target candidate cell.
  • the first predetermined time duration is determined based on a range in time domain of the at least one set of RSs associated with the first set of candidate cells.
  • the terminal device 110 may monitor the third set of candidate cells until a first slot that is after a second predetermined time duration after one of the first, second, third, or fourth timing.
  • the terminal device 110 may monitor the third set of candidate cells until one of: a sixth timing when the terminal device receives a second signaling, a seventh timing that is a stopping timing of the CSI report, or an eighth timing that is a last slot within a third predetermined time duration after one of the sixth or seventh timing.
  • the second signaling comprises at least one of: a third configuration that releases the CSI report, a third indication that deactivates the CSI report, or a fourth indication that triggers another CSI report.
  • the third predetermined time duration is determined based on a range in time domain of the at least one set of RSs associated with the first set of candidate cells.
  • the terminal device 110 may monitor the first set of candidate cells from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may cause the monitoring of the first set of candidate cells to be stopped from a first slot after one of the sixth, seventh or eighth timing.
  • the terminal device 110 may start a candidate cell monitoring timer.
  • the terminal device 110 may monitor the third set of candidate cells until one of the sixth, seventh or eighth timing. In some embodiments, if the first signaling is received before a fifth predetermined time duration that is before monitoring the first set of candidate cells, the terminal device 110 may monitor the third set of candidate cells. In some embodiments, the fourth or fifth predetermined time duration may be determined based on at least one of: a period of monitoring the first set of candidate cells, or time required for the first signaling to take effect.
  • the terminal device 110 may perform at least one of: setting a third candidate cell monitoring counter corresponding to the first set of candidate cells to be zero; causing a candidate cell monitoring timer to be stopped; considering a candidate cell monitoring procedure successfully completed; or cancelling all candidate cell monitoring procedures for a serving cell.
  • FIG. 7 illustrates a flowchart of a communication method 700 implemented at a terminal device in accordance with some embodiments of the present disclosure.
  • the method 700 may be implemented by the network device 120 in FIG. 1.
  • the network device 120 transmits to the terminal device 110, a first configuration.
  • the first configuration indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells by the terminal device.
  • RSs reference signals
  • the network device 120 transmits to the terminal device 110, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells by the terminal device.
  • the first signaling may include at least one of: a second configuration that configures a periodic channel state information (CSI) report for monitoring the second set of candidate cells, a first indication that activates a semi-persistent CSI report for monitoring the second set of candidate cells, or a second indication that triggers an aperiodic CSI report for monitoring the second set of candidate cells.
  • the network device 120 receives, from the terminal device, monitored result of at least one target candidate cell in a third set of candidate cells. If the second set of candidate cells overlaps with the first set of candidate cells, the third set of candidate cells may be determined based on the first and second sets of candidate cells. In some embodiments, the third set of candidate cells comprises at least one candidate cell in the first set of candidate cells that does not overlap with the second set of candidate cells.
  • FIG. 8 is a simplified block diagram of a device 800 that is suitable for implementing embodiments of the present disclosure.
  • the device 800 can be considered as a further example implementation of any of the devices as shown in FIG. 1. Accordingly, the device 800 can be implemented at or as at least a part of the terminal device 110 or the network device 120.
  • the program 830 is assumed to include program instructions that, when executed by the associated processor 810, enable the device 800 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 1 to 7.
  • the embodiments herein may be implemented by computer software executable by the processor 810 of the device 800, or by hardware, or by a combination of software and hardware.
  • the processor 810 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 810 and memory 820 may form processing means 850 adapted to implement various embodiments of the present disclosure.
  • the circuitry may be configured to perform any of the method implemented by the device as discussed above.
  • 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.
  • a terminal device comprises a processor, configured to cause the terminal device to: receive, from a network device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells; receive, from the network device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells; in accordance with a determination that the second set of candidate cells overlaps with the first set of candidate cells, determine a third set of candidate cells based the first and second sets of candidate cells; and monitor the third set of candidate cells based on the first configuration.
  • RSs reference signals
  • CSI channel state information
  • the processor is configured to further cause the terminal device to in accordance with a determination that the second set of candidate cells fully overlaps with the first set of candidate cells, cause monitoring of the first set of candidate cells to be stopped.
  • the first signaling comprises at least one of: a second configuration that configures a periodic channel state information (CSI) report for monitoring the second set of candidate cells, a first indication that activates a semi-persistent CSI report for monitoring the second set of candidate cells, or a second indication that triggers an aperiodic CSI report for monitoring the second set of candidate cells.
  • CSI channel state information
  • the third set of candidate cells comprises at least one candidate cell in the first set of candidate cells that does not overlap with the second set of candidate cells.
  • the processor is configured to further cause the terminal device to: monitor the third set of candidate cells from a first slot after one of: a first timing when the terminal device receives the first signaling, a second timing that is an application timing of the CSI report, a third timing when the terminal device receives a RS associated with the CSI report, a fourth timing when the terminal device transmits the CSI report, or a fifth timing that is a last slot within a first predetermined time duration after one of the first, second, third, or fourth timing.
  • the CSI report is a periodic CSI report or a semi-persistent CSI report
  • the CSI report is the first CSI report in time domain.
  • the first predetermined time duration is determined based on a range in time domain of the at least one set of RSs associated with the first set of candidate cells.
  • the processor is configured to further cause the terminal device to monitor the third set of candidate cells until a first slot that is after a second predetermined time duration after one of the first, second, third, or fourth timing.
  • the processor is configured to further cause the terminal device to in accordance with a determination that the second signaling is received before a fourth predetermined duration that is before a subsequent monitoring of the first set of candidate cells, monitor the third set of candidate cells until one of the sixth, seventh or eighth timing.
  • a network device comprises a processor, configured to cause the network device to: transmit, to a terminal device, a first configuration that indicates at least one set of reference signals (RSs) used for monitoring a first set of candidate cells by the terminal device; transmit, to the terminal device, a first signaling that triggers a channel state information (CSI) report for monitoring a second set of candidate cells by the terminal device; and receive, from the terminal device, monitored result of at least one target candidate cell in a third set of candidate cells, wherein the third set of candidate cells is determined based on the first and second sets of candidate cells, if the second set of candidate cells overlaps with the first set of candidate cells.
  • RSs reference signals
  • CSI channel state information
  • the first signaling comprises at least one of: a second configuration that configures a periodic channel state information (P CSI) report for monitoring the second set of candidate cells, a first indication that activates a semi-persistent CSI report for monitoring the second set of candidate cells, or a second indication that triggers an aperiodic CSI report for monitoring the second set of candidate cells.
  • P CSI periodic channel state information
  • the processor is configured to further cause the network device to transmit, to the terminal device, a second signaling, and wherein the second signaling comprises at least one of: a third configuration that releases the CSI report, a third indication that deactivates the CSI report, or a fourth indication that triggers another CSI report.
  • 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 implemented by the device discussed above.
  • a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the device discussed above.

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

Abstract

Selon des modes de réalisation de la présente divulgation, un équipement terminal reçoit une première configuration qui indique au moins un ensemble de signaux de référence (RS) utilisés pour surveiller un premier ensemble de cellules candidates. L'équipement terminal reçoit également une première signalisation qui déclenche un rapport de CSI pour surveiller un deuxième ensemble de cellules candidates. Dans ce cas, si le deuxième ensemble de cellules candidates chevauche le premier ensemble de cellules candidates, l'équipement terminal détermine un troisième ensemble de cellules candidates sur la base des premier et deuxième ensembles de cellules candidates. L'équipement terminal surveille le troisième ensemble de cellules candidates sur la base de la première configuration. De cette manière, il peut éviter une surveillance de cellule inutile, ce qui permet de réduire la consommation d'énergie.
PCT/CN2023/071814 2023-01-11 2023-01-11 Procédés, dispositifs et support de communication WO2024148542A1 (fr)

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