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WO2025199971A1 - Dispositifs et procédés d'attribution de puissance pour détection - Google Patents

Dispositifs et procédés d'attribution de puissance pour détection

Info

Publication number
WO2025199971A1
WO2025199971A1 PCT/CN2024/084897 CN2024084897W WO2025199971A1 WO 2025199971 A1 WO2025199971 A1 WO 2025199971A1 CN 2024084897 W CN2024084897 W CN 2024084897W WO 2025199971 A1 WO2025199971 A1 WO 2025199971A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
sensing signal
transmitting
sensing
configuration
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/CN2024/084897
Other languages
English (en)
Inventor
Minghui XU
Gang Wang
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.)
NEC Corp
Original Assignee
NEC Corp
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 Corp filed Critical NEC Corp
Priority to PCT/CN2024/084897 priority Critical patent/WO2025199971A1/fr
Publication of WO2025199971A1 publication Critical patent/WO2025199971A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

Definitions

  • ISAC Integrated Sensing and Communication
  • RF radio frequency
  • a second device comprising: a processor configured to cause the second device to: transmit, to a first device, at least one of a first power configuration for transmitting a first sensing signal common for a plurality of devices, or a second power configuration for transmitting a second sensing signal specific to a third device, wherein the first power configuration at least indicates an initial power for transmitting the first sensing signal.
  • a third device comprising: a processor configured to cause the third device to: receive a first sensing signal common for a plurality of devices with a first transmitting power or a second sensing signal specific to a third device with a second transmitting power, the first transmitting power being determined at least based on the first power configuration, the second transmitting power being determined at least based on the second power configuration, wherein the first power configuration at least indicates an initial power for transmitting the first sensing signal.
  • a communication method performed by a first device.
  • the method comprises: receiving, from a second device, at least one of a first power configuration for transmitting a first sensing signal common for a plurality of devices, or a second power configuration for transmitting a second sensing signal specific to a third device, wherein the first power configuration at least indicates an initial power for transmitting the first sensing signal; determining a first transmitting power for the first sensing signal at least based on the first power configuration or a second transmitting power for the second sensing signal at least based on the second power configuration; and transmitting the first sensing signal with the first transmitting power or the second sensing signal with the second transmitting power.
  • FIG. 1A illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIG. 3 illustrates a signaling flow of a procedure of sensing power allocation in accordance with some embodiments of the present disclosure
  • FIG. 11 illustrates a simplified block diagram of an apparatus that is suitable for implementing example embodiments of the present disclosure.
  • 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 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.
  • 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.
  • FIG. 1A illustrates a schematic diagram of an example communication environment 100A in which example embodiments of the present disclosure can be implemented.
  • a plurality of communication devices including a first device 110, a second device 120 and a third device 130, are illustrated.
  • the communication environment 100A 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 or coverage of the second device, and one or more additional cells may be deployed in the communication environment 100A. It is noted that although illustrated as a network device, the second device 120 may be another device than a network device. Although illustrated as a terminal device, the first device 110 or the third device 130 may be other device than a terminal 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 first device 110 may perform a sensing procedure with itself. That is, the first device 110 may be both a sensing transmitter and a sensing receiver. In this case, the first device 110 may be considered to be integrated with the third device 130 discussed in embodiments of FIG. 1A.
  • sensing transmitter may be the entity that sends out the sensing signal which the sensing service will use in its operation.
  • a Sensing transmitter is an NR RAN node or a UE.
  • a Sensing transmitter can be located in the same or different entity as the Sensing receiver.
  • sensing receiver may be an entity that receives the sensing signal which the sensing service will use in its operation.
  • a sensing receiver is an NR RAN node or a UE.
  • a Sensing receiver can be located in the same or different entity as the Sensing transmitter.
  • sensing result is also referred to as a result of a sensing, which may refer to processed 3GPP sensing data requested by a service consumer.
  • sensing mode 1 is a gNB-based mono-static sensing mode.
  • a sensing signal is transmitted by a network node, e.g., gNB, and received/measured by the network node itself, may be referred to as transmission and receiving point (TRP) mono-static mode sometimes.
  • TRP transmission and receiving point
  • Sensing mode 3 (also referred to as “mode 3” ) is a gNB-to-UE-based bi-static sensing mode.
  • a sensing signal is transmitted by a network node and received/measured by UE, may be referred to as TRP-UE bi-static mode sometimes.
  • All of the six sensing modes may be considered (i.e. TRP-TRP bistatic, TRP monostatic, TRP-UE bistatic, UE-TRP bistatic, UE-UE bistatic, UE monostatic) .
  • the first device 110 may transmit the first sensing signal with the initial power, obtain a measurement result of the first sensing signal by measuring the first sensing signal, determine an updated path loss based on the measurement result and determine the first transmitting power based on the first power configuration and the updated path loss.
  • the first device 110 may further transmit information about the first transmitting power to the second device 120.
  • the second device 120 may receive such information from the first device 110 and thus may know the first transmitting power. Then the second device 120 may transmit, to the first device 110, an updated first power configuration determined based on the first power configuration and the information about the first transmitting power.
  • the first device 110 receives the updated first power configuration from the second device 120 and transmits the first sensing signal with the first transmitting power based on the updated first power configuration. In this way, the first power configuration is updated and the first sensing signal is transmitted based on the latest configuration of the transmitting power.
  • the first power configuration may include, for example, but not limited to, a configured maximum power for transmitting the first sensing signal (which may be denoted as P CMAX ) , a power offset (denoted as P offset-SSRS ) of a predefined maximum power for the first sensing signal compared to a communication signal, an expected received power for the sensing signal in the receiving node (denoted as P O, SSRS ) , an initial path loss, an initial power for transmitting the first sensing signal, and/or other parameters/values.
  • P CMAX configured maximum power for transmitting the first sensing signal
  • P offset-SSRS a power offset of a predefined maximum power for the first sensing signal compared to a communication signal
  • P O, SSRS an expected received power for the sensing signal in the receiving node
  • an initial path loss an initial power for transmitting the first sensing signal
  • the initial power may be a minimum value of the difference and the configured maximum power (denoted as P max, SSRS ) for transmitting the first sensing signal.
  • the minimum value may be determined by: min (P CMAX -P offset-SSRS , P max, SSRS ) .
  • the third device 130 is different from the first device 110.
  • the first device 110 may transmit, to the third device 130, the second sensing signal with a further initial power indicated by the second power configuration. This further initial power may be determined, for example, based on an estimation of a path loss based on a measurement result of the first sensing signal.
  • the first device 110 may also receive a power adjustment value from the second device 120. The power adjustment value is used for adjust the transmitting power of the second sensing signal and may be determined based on a measurement result of the second sensing signal.
  • the measurement result of the second sensing signal may be transmitted from the third device 130 to the second device 120 directly or via the first device 110. With the second power configuration and the power adjustment value, the first device 110 may determine the second transmitting power based thereon. In some embodiments, the first device 110 may transmit information about the second transmitting power to the third device 130.
  • the first device 110 may transmit information about the second transmitting power to the second device 120 and then receive, from the second device 120, an updated first power configuration determined based on the first power configuration and the information about the first transmitting power. Based on the updated second power configuration, the first device 110 may transmit the second sensing signal with the second transmitting power.
  • the power control or power allocation procedure for various sensing modes of ISAC are defined. Specifically, the power allocation scheme for the sensing mode 5 or the sensing mode 6 effectively improves power efficiency for the corresponding sensing mode.
  • both the first device 110 and the third device 130 are within the coverage of its serving node, e.g., the second device 120.
  • the first device 110 is discussed as a terminal device (e.g., a UE) for example.
  • the third device 130 is also discussed as a terminal device (e.g., a UE) for example.
  • the second device 120 may be discussed as a network device, such as gNB, a SF node or a LMF node.
  • the second device 120 transmits a first power configuration and/or a second power configuration to the first device 110.
  • the first power configuration may be used for transmitting a first sensing signal common for a plurality of devices, and the second power configuration may be used for transmitting a second sensing signal specific to the third device 130.
  • the first power configuration may indicate an initial power for transmitting the first sensing signal.
  • the second device 120 may transmit, at 402B, the first power configuration and/or the second power configuration to the third device 130.
  • the initial power is a power for initial transmission, which may be determined by: P CMAX -P offset-SSRS . (2)
  • the initial power may be determined based on an initial path loss, and the initial path loss for the initial transmission may be determined based on the requirement on the maximum sensing range indicated to the sensing node.
  • the first device 110 transmits at 404 a first sensing signal (acommon sensing signal) with the initial power (also referred to as initial transmission (Tx) power) .
  • the third device 130 detects the first sensing signal for the sensing mode between the first device 110 and the third device 130, and obtain a measurement result of the first sensing signal.
  • the third device 130 may measure a signal strength or quality (e.g., Reference Signal Received Power (RSRP) , Reference Signal Received Quality (RSRQ) , Signal to Interference plus Noise Ratio (SINR) , and so on) of a link between the first device 110 and the third device 130.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • SINR Signal to Interference plus Noise Ratio
  • the second device 120 may determine the value of the path loss and transmit the value of the path loss and/or its application time to the first device 110.
  • the first device 110 may determine an updated transmission power based on the received value of the path loss and transmit the first sensing signal with the updated transmission power after the application time.
  • the second device 120 may transmit the value of the path loss and/or its application time to the third device 130.
  • P CMAX represents the maximum power as regular one defined for communication.
  • SSRS represents the P0 value (expected received power density in the Rx node) for pathloss based power control for sensing reference signal transmission.
  • P O, SSRS may be configured per sensing mode, especially when only UE is participated in the sensing, and may be updated by gNB, when it is associated with the sensing requirements on range.
  • Table 1 shows examples of the offset power (P offset-SSRS ) for the sensing mode 5 and the sensing mode 6, as well as examples of the P0 value (P O, SSRS ) for the sensing mode 5 and the sensing mode 6.
  • “SM5-powerOffset” indicates the offset power for the sensing mode 5, which may have a value in the range from -6 to +6.
  • the value of the offset power may be any integer in this range, e.g., -6, -5, ..., 5, or 6.
  • SM6-powerOffset indicates the offset power for the sensing mode 6, which may have a value in the range from -9 to +3.
  • the value of the offset power may be any integer in this range, e.g., -9, -8, -7, ..., or 3.
  • “SM5-p0-CM” in Table 1 indicates the P0 value for the sensing mode 5, which may be a value in the range from -202 to 12.
  • the P0 value may be any integer in this range, e.g., -202, -201, ..., or 12.
  • “SM6-p0-CM” in Table 1 indicates the P0 value for the sensing mode 6, which may be a value in the range from -202 to 24.
  • the P0 value may be any integer in this range, e.g., -202, -201, ..., or 24.
  • P max, SSRS represents the maximum power of sensing signal configured by gNB to consider both the sensing performance and the interference introduced by UE-to-UE sensing mode. It may be configured independently for sensing mode 6 and sensing mode 5.
  • the value of P max, SSRS is not higher than the maximum power UE supported for sensing other targets, wherein the maximum power UE supported may be reported as one kind of capability related to sensing.
  • ⁇ represents a configured SCS for sensing signal.
  • equation (3) represents the bandwidth in terms of RB for the sensing reference signal under the configured SCS for sensing.
  • the may be 6 or 11, which may be determined by the length or the maximum number of ID for the sequence carried on the common sensing resource.
  • the path loss if more than one Rx UE is connected to the Tx UE for sensing, then a combined path loss by considering path loss of the links between Tx UE and all the Rx UEs is used. Both Interference and sensing performance may be considered.
  • the path loss may be determined by the second device 120, e.g., gNB/SF/LMF, and then indicated to the sensing node.
  • FIG. 5 illustrates a signaling flow 500 of a procedure of power allocation of the first sensing signal (common sensing signal) in accordance with some embodiments of the present disclosure.
  • the signaling flow 500 will be discussed with reference to FIG. 1A, for example, by using the first device 110, the second device 120 and the third device 130.
  • the first device 110 is within the coverage of its serving node, e.g., the second device 120, but the third device 130 is out of the coverage, for example, due to entering a coverage hole or moving.
  • the first device 110 is discussed as a terminal device (e.g., a UE) for example.
  • the third device 130 is also discussed as a terminal device (e.g., a UE) for example.
  • the second device 120 may be discussed as a gNB, a SF node or a LMF node, for example.
  • the second device 120 transmits a first power configuration and/or a second power configuration to the first device 110.
  • the first power configuration may be used for transmitting a first sensing signal common for a plurality of devices, and the second power configuration may be used for transmitting a second sensing signal specific to the third device 130.
  • the first power configuration may indicate an initial power for transmitting the first sensing signal.
  • the first device 110 transmits at 504 a first sensing signal (acommon sensing signal) with the initial power.
  • the third device 130 detects the first sensing signal for the sensing mode between the first device 110 and the third device 130, and obtain a measurement result of the first sensing signal.
  • the third device 130 may measure a signal strength or quality (e.g., Reference Signal Received Power (RSRP) , Reference Signal Received Quality (RSRQ) , Signal to Interference plus Noise Ratio (SINR) , and so on) of a link between the first device 110 and the third device 130.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • SINR Signal to Interference plus Noise Ratio
  • a connection is established between the first device 110 and the third device 130. Then the third device 130 may transmit the measurement result of the first sensing signal to the first device 110 at 510. The first device 110 may transmit the measurement result of the first sensing signal to the second device 120 at 512.
  • the second device 120 may determine the value of the path loss and transmit the value of the path loss and/or its application time to the first device 110.
  • the first device 110 may determine an updated transmission power based on the received value of the path loss and transmit information about the updated transmission power (also referred to as updated power for short) to the third device 130.
  • the updated transmission power may be determined in a similar way as discussed with reference to FIG. 4, and thus is not repeated here.
  • the first device 110 may further transmit the first sensing signal with the updated transmission power after the application time.
  • FIG. 6 illustrates a signaling flow 600 of a procedure of power allocation of the second sensing signal (dedicated sensing signal) in accordance with some embodiments of the present disclosure.
  • the signaling flow 600 will be discussed with reference to FIG. 1A, for example, by using the first device 110, the second device 120 and the third device 130.
  • both the first device 110 and the third device 130 are within the coverage of its serving node, e.g., the second device 120.
  • the first device 110 is discussed as a terminal device (e.g., a UE) for example.
  • the third device 130 is also discussed as a terminal device (e.g., a UE) for example.
  • the second device 120 may be discussed as a network device, such as gNB, a SF node or a LMF node.
  • the first device 110 transmits at 406 a second sensing signal (adedicated sensing signal) with an initial power (also referred to as initial Tx power) which may be the same or different from the initial power for transmitting the first sensing signal.
  • the third device 130 detects the second sensing signal for the sensing mode between two UEs (the first device 110 and the third device 130) , and obtain a measurement result of the second sensing signal.
  • the third device 130 may measure a signal strength or quality (e.g., Reference Signal Received Power (RSRP) , Reference Signal Received Quality (RSRQ) , Signal to Interference plus Noise Ratio (SINR) , and so on) of a link between the first device 110 and the third device 130.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • SINR Signal to Interference plus Noise Ratio
  • the first device 110 may determine an updated transmission power for the second sensing signal based on the received value of the path loss and the power adjustment value, and then transmit information about the updated transmission power (also referred to as updated power for short) to the third device 130.
  • the first device 110 may further transmit the second sensing signal with the updated transmission power after the application time.
  • the updated transmission power (denoted as P SSRS (i) ) for transmitting the second sensing signal may be determined by:
  • P CMAX , P offset-SSRS , P max, SSRS , P O, SSRS are similar as those for the common sensing signal (or common resource/channel) . Different values with common resource may be configured.
  • P adjust represents the power adjustment, which is a cumulative adjusting power value, to adjust the power according to the sensing performance, such as detection probability. If a real detection probability is larger than a target/required/pre-defined detection probability, the power adjustment may be used to reduce the transmission power compared to the previous transmission power. If the real detection probability is less than the target/required/pre-defined detection probability, the power adjustment may be used to increase the transmission power compared to the previous transmission power.
  • the detection probability may be determined based on a combined result by considering measurement results of multiple Rx UEs connected to the same Tx UE.
  • the detection probability may be determined by the second device 120, e.g., gNB/SF. It may be defined per Tx sensing node. For example, in a case where three of the Rx sensing nodes connected to the same Tx sensing node detect the targets, it is recorded as a success detection for the Tx sensing node.
  • the first device 110 is within the coverage of its serving node, e.g., the second device 120.
  • the first device 110 is discussed as a terminal device (e.g., a UE) for example.
  • the second device 120 may be discussed as a network device, such as gNB, a SF node or a LMF node.
  • the second device 120 indicate the power configuration of the first device 110 in the sensing mode 5.
  • the power configuration may include the maximum power, a power offset, and so on.
  • the first device 110 may transmit the measurement result to the second device 120.
  • the first device 110 may report the power used for the first sensing signal of the sensing mode 5.
  • the power of the first sensing signal may be reported together with the sensing measurements, to implicitly indicate the quality of the measurements.
  • the second device 120 may determine the updated power configuration based on the sensing requirement, scenarios, channel condition, and so on.
  • the second device 120 transmits the updated power configuration for the first sensing signal of sensing mode 5 after the application time.
  • the first device 110 may perform the sensing based on the updated power configuration.
  • the updated power configuration may include a transmitting power allocated for the common sensing resource/signal/channel, which may be determined by:
  • Equation (5) the definition of parameters P CMAX , P offset-SSRS , P max, SSRS , P O, SSRS , are similar as those determined for common resource/signal/channel for sensing mode 6 (UE A-to-UE B) and thus not detailed here.
  • Time gap represents a time interval which is introduced between estimated PL and apply the estimated PL, to avoid the reflected signal confusion and Reserve time for power adjusting.
  • the reflected signal confusion is to be avoided especially when the waveform for this sensing mode is different with that for communication.
  • Such a waveform may be for example, radar-based waveform that is applied independently for sensing mode 5.
  • the time gap may be associated with the maximum sensing range or difference between maximum sensing range and a minimum sensing range, e.g., 150m. In the case where the minimum sensing range is 150m, the time gap may be larger than or equal to 1us.
  • the first device 110 when the first device 110 (also referred to as UE) is outside of coverage, it may only continue to transmit and receive sensing signal on the pre-configured periodic sensing resource according to the pre-configured power configuration. This UE may try to connect to another sensing node, and update the sensing information normally.
  • the sensing node of the first priority may be a gNB, and the sensing node of the second priority may be other UE.
  • the UE may report the latest sensing information to LMF/gNB via another sensing node. Furthermore, the UE may update the power configuration if configured via the new connection link. Otherwise, if the UE is not connected to another sensing node within the time duration, it may stop sensing, and wait new sensing indicate including power configuration after connected to gNB.
  • the power offset, P offset-SSRS represents the maximum power can be used for the sensing mode 5 of this UE (i.e., the first device 110 in this case) .
  • P max, SSRS and P O, SSRS may be configured independently with common sensing resource/signal/channel.
  • FIG. 8 illustrates a flowchart of a communication method 800 implemented at a first device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 800 will be described from the perspective of the first device 110 in FIG. 1A and FIG. 1B.
  • the first device 110 determines a first transmitting power for the first sensing signal at least based on the first power configuration or a second transmitting power for the second sensing signal at least based on the second power configuration.
  • the third device is different from the first device, and the first device may transmit the first sensing signal with the initial power; receive information about an updated path loss from the second device, the updated path loss being determined based on a measurement result of the first sensing signal from the third device.
  • the first device may determine the first transmitting power based on the first power configuration and the updated path loss.
  • the information about an updated path loss comprises an application time point of the updated path loss
  • the first device is further caused to: transmit the first sensing signal based on the determined transmitting power after the application time point.
  • the third device is different from the first device, and the first device may transmit the first sensing signal with the initial power; and receive, from the second device, information about the first transmitting power which is determined based on the first power configuration and the updated path loss, the updated path loss being determined based on a measurement result of the first sensing signal from the third device.
  • the third device and the first device are implemented at a single device, and the first device may transmit the first sensing signal with the initial power; obtain a measurement result of the first sensing signal by measuring the first sensing signal; determine an updated path loss based on the measurement result; and determine the first transmitting power based on the first power configuration and the updated path loss.
  • the first power configuration comprises at least one of: a configured maximum power for transmitting the first sensing signal, a power offset of a predefined maximum power for the first sensing signal compared to a communication signal, an initial path loss, or an initial power for transmitting the first sensing signal.
  • the initial power indicates at least one of: a difference between the predefined maximum power for transmitting the first sensing signal and the power offset of the predefined maximum power for the first sensing signal compared to a communication signal, a minimum value of the difference and the configured maximum power for transmitting the first sensing signal, a reference power, or the initial path loss.
  • the measurement result of the second sensing signal is transmitted from the third device to the second device directly or via the first device.
  • the third device and the first device are implemented at a single device, and the first device may transmit the second sensing signal with a further initial power; obtain a measurement result of the second sensing signal by measuring the second sensing signal; determine an updated path loss based on the measurement result; and determine the second transmitting power based on the second power configuration and the updated path loss.
  • the first device 110 may transmit information about the second transmitting power to the second device; receive, from the second device, an updated first power configuration determined based on the first power configuration and the information about the first transmitting power; and transmit the second sensing signal with the second transmitting power based on the updated second power configuration.
  • the second power configuration comprises at least one of: a configured maximum power for transmitting the first sensing signal, a power offset of a predefined maximum power for the first sensing signal compared to a communication signal, an initial path loss, an initial power for transmitting the first sensing signal, a power adjustment value, or a time gap between determination of an updated pass loss and applying of the updated pass loss.
  • At least one of the first device and the third device is a terminal device, and the second device is a network device.
  • FIG. 9 illustrates a flowchart of a communication method 900 implemented at a second device in accordance with some embodiments of the present disclosure.
  • the method 900 will be described from the perspective of the second device 120 in FIG. 1A and FIG. 1B.
  • the second device 120 transmits, to a first device, at least one of a first power configuration for transmitting a first sensing signal common for a plurality of devices, or a second power configuration for transmitting a second sensing signal specific to a third device.
  • the first power configuration at least indicates an initial power for transmitting the first sensing signal.
  • the third device is different from the first device, and the second device may receive, from the third device, a measurement result of the first sensing signal transmitted from the first device with an initial power; determine an updated path loss based on the measurement result; determine the first transmitting power based on the first power configuration and the updated path loss; and transmit, to the first device or the third device, information about the first transmitting power.
  • the measurement result of the first sensing signal is received from the third device directly or via the first device.
  • the measurement result of the second sensing signal is received from the third device directly or via the first device.
  • FIG. 10 illustrates a flowchart of a communication method 1000 implemented at a third device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 1000 will be described from the perspective of the third device 130 in FIG. 1A.
  • the third device is different from the first device, and the third device may determine a measurement result of the first sensing signal transmitted with the initial power from the first device; and transmit the measurement result of the first sensing signal to at least one of the first device or the second device.
  • the third device 130 may receive information about the first transmitting power from the first device or the second device.
  • the third device and the first device are implemented at a single device, and the third device 130 may receive the first sensing signal transmitted with the first transmitting power based on an updated first power configuration.
  • the updated first power configuration is determined based on the first power configuration and information about the first transmitting power.
  • the information about the first transmitting power is determined based on an updated path loss, the updated path loss being determined based on a measurement result of the first sensing signal transmitted with the initial power.
  • the first power configuration comprises at least one of: a configured maximum power for transmitting the first sensing signal, a power offset of a predefined maximum power for the first sensing signal compared to a communication signal, an initial path loss, or an initial power for transmitting the first sensing signal.
  • the third device is different from the first device, and the third device may receive, from the first device, the second sensing signal with a further initial power indicated by the second power configuration; and transmit, to the first device or the second device, a measurement result of the second sensing signal.
  • the measurement result of the second sensing signal is transmitted from the third device to the second device directly or via the first device.
  • the third device and the first device are implemented at a single device, and the third device may receive the second sensing signal transmitted with the second transmitting power based on an updated second power configuration.
  • the updated second power configuration is determined based on the second power configuration and information about the second transmitting power.
  • the information about the second transmitting power is determined based on an updated path loss, the updated path loss being determined based on a measurement result of the second sensing signal transmitted with a further initial power.
  • the second power configuration comprises at least one of: a configured maximum power for transmitting the second sensing signal, a power offset of a predefined maximum power for the second sensing signal compared to a communication signal, an initial path loss, an initial power for transmitting the second sensing signal, a power adjustment value, or a time gap between determination of an updated pass loss and applying of the updated pass loss.
  • the third device is further caused to: receive information about the first transmitting power from the first device or the second device.
  • the measurement result of the second sensing signal is transmitted from the third device to the second device directly or via the first device.
  • the third device is further caused to: receive, from the first device or the third device, information about the second transmitting power.
  • the third device and the first device are implemented at a single device, and wherein the third device is further caused to: receive the second sensing signal transmitted with the second transmitting power based on an updated second power configuration, wherein the updated second power configuration is determined based on the second power configuration and information about the second transmitting power, and wherein the information about the second transmitting power is determined based on an updated path loss, the updated path loss being determined based on a measurement result of the second sensing signal transmitted with a further initial power.
  • the second power configuration comprises at least one of: a configured maximum power for transmitting the second sensing signal, a power offset of a predefined maximum power for the second sensing signal compared to a communication signal, an initial path loss, an initial power for transmitting the second sensing signal, a power adjustment value, or a time gap between determination of an updated pass loss and applying of the updated pass loss.
  • a first device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the first device discussed above.
  • a third device comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the third 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 second device discussed above.

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

Abstract

Des modes de réalisation de la présente divulgation concernent une solution d'attribution de puissance pour la détection. Dans une solution, un premier dispositif reçoit, en provenance d'un deuxième dispositif, une première configuration de puissance pour transmettre un premier signal de détection commun à une pluralité de dispositifs et/ou une deuxième configuration de puissance pour transmettre un deuxième signal de détection spécifique à un troisième dispositif. La première configuration de puissance indique au moins une puissance initiale pour transmettre le premier signal de détection. Le premier dispositif détermine une première puissance de transmission pour le premier signal de détection au moins sur la base de la première configuration de puissance ou une seconde puissance de transmission pour le second signal de détection au moins sur la base de la seconde configuration de puissance, et transmet le premier signal de détection avec la première puissance de transmission ou le second signal de détection avec la seconde puissance de transmission.
PCT/CN2024/084897 2024-03-29 2024-03-29 Dispositifs et procédés d'attribution de puissance pour détection Pending WO2025199971A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018126894A1 (fr) * 2017-01-06 2018-07-12 华为技术有限公司 Procédé de configuration de puissance, et dispositif associé
WO2019127012A1 (fr) * 2017-12-26 2019-07-04 南通朗恒通信技术有限公司 Procédé et appareil utilisés dans un équipement utilisateur et station de base de communication sans fil
WO2023123433A1 (fr) * 2021-12-31 2023-07-06 北京小米移动软件有限公司 Procédé de configuration de puissance pour terminal, appareil, dispositif de communication, et support de stockage
CN117528749A (zh) * 2022-07-29 2024-02-06 北京紫光展锐通信技术有限公司 通信方法及装置、存储介质、网络设备、终端设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018126894A1 (fr) * 2017-01-06 2018-07-12 华为技术有限公司 Procédé de configuration de puissance, et dispositif associé
WO2019127012A1 (fr) * 2017-12-26 2019-07-04 南通朗恒通信技术有限公司 Procédé et appareil utilisés dans un équipement utilisateur et station de base de communication sans fil
WO2023123433A1 (fr) * 2021-12-31 2023-07-06 北京小米移动软件有限公司 Procédé de configuration de puissance pour terminal, appareil, dispositif de communication, et support de stockage
CN117528749A (zh) * 2022-07-29 2024-02-06 北京紫光展锐通信技术有限公司 通信方法及装置、存储介质、网络设备、终端设备

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