WO2025199973A1 - Procédés, dispositifs et support de stockage informatique de communication - Google Patents

Procédés, dispositifs et support de stockage informatique de communication

Info

Publication number
WO2025199973A1
WO2025199973A1 PCT/CN2024/084900 CN2024084900W WO2025199973A1 WO 2025199973 A1 WO2025199973 A1 WO 2025199973A1 CN 2024084900 W CN2024084900 W CN 2024084900W WO 2025199973 A1 WO2025199973 A1 WO 2025199973A1
Authority
WO
WIPO (PCT)
Prior art keywords
intermediate node
path
terminal device
network device
measurement
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/CN2024/084900
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/CN2024/084900 priority Critical patent/WO2025199973A1/fr
Publication of WO2025199973A1 publication Critical patent/WO2025199973A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/003—Bistatic radar systems; Multistatic radar systems
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0273—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves using multipath or indirect path propagation signals in position determination
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
    • G01S7/006—Transmission of data between radar, sonar or lidar systems and remote stations using shared front-end circuitry, e.g. antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535—Control of relay amplifier gain
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station

Definitions

  • 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 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 term “repeater device” refers to a device which can provide an amplify-and-forward function between a terminal device and a network device, especially, the terminal device may be out of coverage of the network device or may be blocked from a communication with the network device.
  • the repeater device may receive control information from the network device to enhance the amply-and-forward function. Examples of the repeater device may include, but not be limited to, an NCR and the like. For the purposes of discussion, some embodiments of the present disclosure will be discussed by taking an NCR as the example of the repeater device.
  • the terminal device, the network device and the repeater 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.
  • 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.
  • 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.
  • Radio frequency (RF) repeaters as a new type of network nodes have been widely deployed to supplement the coverage provided by regular full-stack cells. Further, RIS is proposed as one further evolution of a type of NCR.
  • a RIS used as a reflector it could be interpreted in two different ways: as part of the passive environment, acting like any scatterer or reflector or refractor, or alternatively as part of the infrastructure, playing a similar role as a global reference or anchor point.
  • the first device transmits a first reference signal (RS) configuration to a terminal device; transmit at least one second RS configuration to at least one intermediate node, wherein the intermediate node reflects RSs from the network device; receives, from the terminal device, a first measurement report comprising measurement results about at least one first path; and transmits, a third RS configuration to a first intermediate node of the at least one intermediate node, the third RS configuration being different from the second RS configuration configured for the first intermediate node; receives, from the terminal device, a second measurement report comprising measurement results about at least one second path; and determines, based on the measurement results about at least one first path and the measurement results about at least one second path, first information of the first intermediate node comprises at least one of the following: whether the first intermediate node is associated with a path between the network device and the terminal device, or location information of the first intermediate node.
  • RS reference signal
  • signals reflected by an intermediate node may refer to: signals reflected by an intermediate node, signals scattered by an intermediate node, signals refracted by an intermediate node, signals diffracted by an intermediate node and so on.
  • the RIS is used as example of the intermediate node for describing some example embodiments of the present disclosure. It is noted that these example embodiments of the present disclosure are equally applicable to other intermediate.
  • the communication network 100 may comprise a terminal device 110 and a network device 120 that may serve the terminal device 110. Between the terminal device 110 and the network device 120, there may be one or more intermediate nodes, such as, the intermediate node 130-1 to 130-4 (individually or collectively referred to as an intermediate node 130) .
  • the intermediate node 130-1 to 130-4 (individually or collectively referred to as an intermediate node 130) .
  • the intermediate node 130 may be turned on by default. Further, Reflecting, refracting and other operation of the intermediate node 130 is controlled by the network device 120. For example, the network device 120 provides one or more configuration parameters to the intermediate node 130, where the one or more configuration parameters include one or more of the following: gain, the number of antennas, space between antennas, phase shift of antenna, beam index, application time for the configuration/indication for reflecting/refracting signals. It should be noted that in some other cases, the intermediate node 130 may be controlled by other mode rather than the network device 120. If so, all the discussions about the network device discussed herein may be applicable to the other controller device. Merely for brevity, the same or similar contents are omitted herein.
  • path 140-1 to 140-5 there may be a plurality of paths between the terminal device 110 and the network device 120, i.e., path 140-1 to 140-5, which are individually or collectively referred to as a path 140.
  • one or more paths may be direct path, such as, path 140-3, and one or more paths may be indirect path, such as, paths 140-1, 140-1, 140-4 and 140-5.
  • an indirect path may include two sub-links: one between network device 120 and the intermediate node 130, and the other is between the intermediate node 130 and terminal device 110. Further, the direct path is not associated with the intermediate node 130, which may be line of sight (LOS) or non-line of sight (NLOS) path.
  • LOS line of sight
  • NLOS non-line of sight
  • a path via intermediate node 130/RIS a path associated with intermediate node 130/RIS, an indirect path may be used interchangeably.
  • the path is defined as a path can be received simultaneously with the first path, and/or the difference of arrival (DOA) of the path is within the coverage of the beam for another path, and the AoA of the path is within the coverage of the beam for another path.
  • CP cyclic prefix
  • DOA difference of arrival
  • the terminal device 110 and the network device 120 may communicate with each other via the intermediate node 130, or communicate with each other directly.
  • the wireless communication channel may comprise a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , a physical random-access channel (PRACH) , a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) and a physical broadcast channel (PBCH) .
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • PRACH physical random-access channel
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • PBCH physical broadcast channel
  • the network device 120 is a transmitting (TX) device (or a transmitter) and the terminal device 110 is a receiving (RX) device (or a receiver) .
  • the network device 120 is an RX device (or a receiver) and the terminal device 110 is a TX device (or a transmitter) .
  • the communication environment 100A may include any suitable number of devices configured to implementing example embodiments of the present disclosure.
  • 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 shows a signaling chart illustrating process 200 of communication according to some example embodiments of the present disclosure.
  • the process 200 will be described with reference to FIG. 1.
  • the process 200 may involve the terminal device 110, the network device 120, the intermediate node 130.
  • an RIS may be described as an example of the intermediate node 130.
  • some interactions are performed among the terminal device110 and the network device120 (such as, exchanging first and second information and so on) . It is to be understood that the interactions may be implemented either in one single signaling/message/configuration or multiple signaling/messages/configurations, including system information, a radio resource control (RRC) signalling, downlink control information (DCI) , uplink control information (UCI) , media access control (MAC) control element (CE) and so on.
  • RRC radio resource control
  • DCI downlink control information
  • UCI uplink control information
  • CE media access control element
  • the network device 120 provides (210) related RS configuration to the terminal device and the intermediate node (s) 130. As illustrated in FIG. 2, the network device 120 transmits a first reference signal (RS) configuration to a terminal device 110 and further transmit at least one second RS configuration to at least one intermediate node 130.
  • RS reference signal
  • the network device 120 performs (215) RS transmission.
  • the RS transmission may be transmitted to the terminal device 110 directly and/or may be transmitted to the terminal device 110 via the intermediate node (s) 130, for example, the RS signals from the network device 120 may be reflected by the intermediate node (s) 130, and the reflected signals may be received by the terminal device 110.
  • the terminal device 110 transmits (225) a first measurement report to the network device 120, where the first measurement report comprises measurement results about at least one first path (i.e., the measured path) .
  • the network device 120 may determine (230) new configuration (referred to as third RS configuration) for reflecting/refracting the RS at the intermedia node (s) 130 according to the reported measurements. As illustrated in FIG. 2, the network device 120 mat transmit, a third RS configuration to a first intermediate node of the at least one intermediate node 130 (also may transit other third RS configuration to other intermediate node (s) 130) , where the third RS configuration is different from the second RS configuration configured for the first intermediate node.
  • third RS configuration referred to as third RS configuration for reflecting/refracting the RS at the intermedia node (s) 130 according to the reported measurements.
  • the network device 120 may transmit, a third RS configuration to a first intermediate node of the at least one intermediate node 130 (also may transit other third RS configuration to other intermediate node (s) 130) , where the third RS configuration is different from the second RS configuration configured for the first intermediate node.
  • the terminal device 110 may determine (245) the measurements per path based on the new received RS signals. Then, the terminal device 110 may transmit (250) a second measurement report to the network device 110. Similar with the first measurement report, the second measurement report may comprise measurement results about at least one second path.
  • the network device 110 may determine (255) first information of the first intermediate node, where the first information comprises at least one of the following:
  • the network device 120 after receiving the measurement report, the network device 120 also may select part of the intermediate node (s) 130 (i.e., part of the paths) , and then update the RS configuration (s) of the selected intermediate node (s) 130.
  • a total number (represented as M2) of the third RS configuration and the at least one further third RS configuration is smaller than a number of the at least one first path reported in the first measurement.
  • the total number equals to a number of paths with a measurement result equal to or higher than a threshold.
  • the total number is equal to or smaller than a maximum number.
  • each intermediate node 130 may be associated with a second RS configuration and a third RS configuration (referred to as a group of configurations) .
  • a group of configurations referred to as a group of configurations.
  • a time length of a duration used for collecting measurement reports is equal to or smaller than a threshold, and each measurement result comprises measurement results about at least one path. In this way, two measurement results may have comparability, and thus the network device 120 may determine the first information of the intermediate node 130 accordingly.
  • a second RS configuration and a third RS configuration associated with a same intermediate node 130 are received at different time.
  • the time duration including all the resources with different configurations on associated with a same intermediate node 130 is required to be less than a threshold. In this way, the channel variance during the two resources is ignorable.
  • the threshold may be associated with the coherence time.
  • the first measurement report may indicates at least one of the following:
  • FIG. 3B illustrates an example of comparation among two measurements.
  • the measurement results are generally the same.
  • FIG. 4A and FIG. 4B illustrate examples of comparation among two measurements, where there are 3 paths and two intermediate nodes 130.
  • the network device 120 may increase reflecting gain of intermediate node #1 (or increase the number of antennas of intermediate node #1) .
  • the second measurement report may be received.
  • the network device 120 may notice that one measurement result of a path has increased.
  • the network device 120 may understand the intermediate node #1 is an associated intermediate node of the terminal device 110.
  • the downlink gain from intermediate node #1 to terminal device 110 is updated/reconfigured/increased.
  • the path with delay t1 is identified as one path assisted by intermediate node #1.
  • the network device 120 may decrease reflecting gain of intermediate node #1 (or decrease the number of antennas of intermediate node #1) .
  • the second measurement report may be received.
  • the network device 120 may notice that one measurement result of a path have decreased.
  • the network device 120 may understand the intermediate node #1 is an associated intermediate node of the terminal device 110.
  • the network device 120 may change the reflecting phase from reflecting phase #1 to reflecting phase #2 (by indicating phase shift value, or indicate beam index) .
  • the second measurement report may be received.
  • the network device 120 may notice that one measurement result of a path has increased. That is because, compared to the reflecting phase #1, reflecting phase #2 makes the path nearer to a central of the beam, and thus case an increasing of the measured signal strength.
  • the network device 120 may understand the intermediate node #1 is an associated intermediate node of the terminal device 110.
  • the RS configuration of more than one intermediate node 130 may be adjusted.
  • K intermediate nodes 130 may be reconfigured by corresponding third RS configurations, and K is an integer.
  • an adjustment gain of each a first ceil (K/2) intermediate nodes 130 is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each a second K-ceil (K/2) intermediate nodes 130 is decreased by a product of ‘R’ and ‘n’
  • ‘R’ is an adjustment step
  • ‘n’ is an integer with a value range of from 1 to ceil (K/2) .
  • value of n is determined by the number of paths received simultaneously.
  • the Maximum number of paths to be identified may be K0, which may be a capability reported by the terminal device.
  • ceil (K/2) may be replaced by floor (K/2) .
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of ceil (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K-ceil (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’ , wherein ‘R’ is an adjustment step, and ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of floor (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K- floor (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’
  • ‘R’ is an adjustment step
  • ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • the adjustment step ‘R’ is determined based on a minimum resolution used by the terminal device 110 to distinguish different paths, the larger minimum resolution, the larger value of ‘R’ .
  • Table 1-3 illustrates a measured signal strengths reported in a second measurement report.
  • a comparation result may be obtained as illustrated in below Table 1-4.
  • the network device 120 may determine that intermediate nodes #1, #2, #4 and #5 are associated with the terminal device 110, and path#3 isn’ t associated with any intermediate node, intermediate node#3 isn’ t associated with any path too.
  • the intermediate node #1 is associated with path #4 (as the adjustment value of the intermediate node #1 is -4 and the change value of path #4 is -4)
  • the intermediate node #2 is associated with path #2 (as the adjustment value of the intermediate node #1 is -2 and the change value of path #4 is -2)
  • the intermediate node #4 is associated with path #4 (as the adjustment value of the intermediate node #4 is +4 and the change value of path #1 is _4)
  • the intermediate node #5 is associated with path #5 (as the adjustment value of the intermediate node #5 is +6 and the change value of path #4 is +6) .
  • intermediate node#3 is not associated with any path (i.e., the intermediate node#3 is not associated with the terminal device 110) .
  • FIG. 4C illustrates an example of comparation among two measurements, where the reflecting gain of intermediate node #1 increases and the reflecting gain of intermediate node #2 decreases.
  • both the intermediate node #1 and the intermediate node #2 are identified once.
  • the network device 120 may further determine a distance between the first intermediate node and the terminal device 110 based on the location of the first intermediate node and the measurement result of the first intermediate node.
  • the network device 120 may determine a set of associated intermediate nodes 130 of the terminal device 110, each of the set of associated intermediate nodes 130 being associated with a path between the network device 120 and the terminal device 110.
  • a further information including the distance between the intermediate node and the terminal device, the angle of the link between the intermediate node and the terminal device is determined according to the reported measurement.
  • the location information of intermediate node is shared to network device, the network device estimates the distance by excluded the influence of the first sub-link between network device and the intermediate node.
  • the network device 120 may further determine (260) at least one associated intermediate node 130 from the set of associated intermediate nodes 130 for assisting positioning measurement of the terminal device 110 based on at least one of the following:
  • the network device 120 may determine the associated intermediate node 130 to be an intermediate node 130 for assisting positioning measurement in accordance with at least one of the following:
  • ⁇ a determination that the associated intermediate node 130 is associated with a resource associated with a LOS path between the network device 120 and the terminal device 110, determine the intermediate node 130 as an intermediate node 130 for assisting positioning measurement, or
  • ⁇ a determination that a distance between the associated intermediate node 130 and the terminal device 110 is equal to or smaller than a threshold.
  • the resource for positioning is chosen in descending order of the number of paths associated with an intermediate node 130.
  • the intermediate node 130 which has at least two associated with an intermediate node 130 may be selected first. In this way, only one RTT time is needed to report to determine the location, that is because measurement information related to more than one reference/anchor points may be obtained based on the once reporting of multiple paths assisted by multiple intermediate nodes.
  • the resource for positioning is chosen in descending order of the sum of (LOS path, number of paths assisted by RIS) , where the LOS path is illustrated by a probability larger than a predefine value (such as 80%) .
  • a predefine value such as 80%
  • the larger RSRPP corresponds to the higher LOS probability
  • the less time delay corresponds to a higher LOS probability.
  • the resource with LOS path is chosen first, then according to the descending order of the number of paths associated with different intermediate node 130.
  • a location range may be determined based on previous measurements, then additional intermediate node (520-1 or 520-1) near the possible location (or near to one possible central point and/or far away to another possible central point, such that large delay/received power difference between the two central points is present when any intermediate node 130 is applied.
  • the chosen intermediate node 130 is then indicated to be turn on with configured ⁇ beam index, gain, time resource ⁇ , or ⁇ direction, activated antennas, gain, time resource ⁇ and so on, where the possible locations are position 510-1 and 510-2 in FIG. 5.
  • a higher accuracy of positioning is expected, which may be achieved by reducing the distance between anchor point (RIS) and the terminal device 110, as illustrated in FIG. 5B.
  • the intermediate node 130 is chosen in the ascending order of distance between the intermediate node 130 and terminal device 110.
  • the related resource is activated/chosen as resource for positioning.
  • the resource is chosen in the descending order of number of paths assisted by RIS and the distance between the intermediate node 130 and terminal device 110 is less than a predefined/preconfigured value.
  • resource/RIS can be chosen based on the previous results, as discussed above.
  • the network device 120 may transmit, to the terminal device 110, a message comprising a set of first information of a set of associated intermediate nodes 130 of the terminal device 110, each of the set of associated intermediate nodes 130 being associated with a path between the network device 120 and the terminal device 110.
  • ⁇ a determination that the associated intermediate node 130 is associated with a resource associated with a LOS path between the network device 120 and the terminal device 110, determine the intermediate node 130 as an intermediate node 130 for assisting positioning measurement, or
  • ⁇ a determination that a distance between the associated intermediate node 130 and the terminal device 110 is equal to or smaller than a threshold.
  • the set of first information of a set of associated intermediate nodes 130 may be known to terminal device 110 (for example, the network device 120 shares the set of first information of a set of associated intermediate nodes 130 to the terminal device 110 via additional signaling (s) ) .
  • information of the intermediate nodes 130 which introduces new path to a UE is indicated to the terminal device 110, including the index of the intermediate nodes 130 for each of the paths associated with an intermediate node 130.
  • the terminal device 110 may determine the position results directly. Additionally, the terminal device 110 may send a requirement on which intermediate node (s) 130 is (are) preferred for further positioning, where the requirement may include ⁇ RIS index, direction information ⁇ .
  • FIG. 6 illustrates a flowchart of a communication method 600 implemented at a network device in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the network device 120 in FIG. 1.
  • the network device transmits a first reference signal (RS) configuration to a terminal device.
  • RS reference signal
  • the network device transmits at least one second reference signal (RS) configuration to at least one intermediate node, wherein the intermediate node reflects RSs from the network device.
  • RS reference signal
  • the network device transmits, a third RS configuration to a first intermediate node of the at least one intermediate node, the third RS configuration being different from the second RS configuration configured for the first intermediate node.
  • the network device receives, from the terminal device, a second measurement report comprising measurement results about at least one second path.
  • the network device determines, based on the measurement results about at least one first path and the measurement results about at least one second path, first information of the first intermediate node comprises at least one of the following: whether the first intermediate node is associated with a path between the network device and the terminal device, or location information of the first intermediate node.
  • the network device may transmit, at least one further third RS configuration to at least one the intermediate node different from the first intermediate node, each further third RS configuration being different from the second RS configuration configured for a respective intermediate node, wherein a total number of the third RS configuration and the at least one further third RS configuration is smaller than a number of the at least one first path reported in the first measurement, or wherein the total number equals to a number of path with a measurement result equal to or higher than a threshold, or wherein the total number is equal to or smaller than a maximum number.
  • a time length of a duration used for collecting measurement reports is equal to or smaller than a threshold, and each measurement result comprises measurement results about at least one path.
  • third RS configuration is different from the second RS configuration in at least one of the following aspects: a reflecting gain, a reflecting phase, a space between antennas used for reflecting, or a number of antennas used for reflecting.
  • the first measurement report indicates at least one of the following: at least one measured signal strength of the at least one first path, at least one time delay of the at least one first path, or at least one direction information for receiving the at least one first path.
  • the reference time point is synchronization time or the earliest receiving time of the at least one receiving time, or each of the at least one AoA is indicated by at least one absolute AOA value of the at least one path of the at least one first path, each of the at least one AoA is indicated by a difference between an absolute AoA value of the AoA and a reference AoA, or one of at least one AoA is used as a reference AoA and indicated by an absolute AoA value, and each of the other AoAs is indicated by a differential value between an absolute AoA value of the other AoA and the reference AoA or between the absolute AoA value of the AoA and a previous absolute AoA value.
  • the first measurement further comprises an indication indicating time information of a resource used for obtaining the measurement results about at least one first path.
  • 2K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer, and wherein, an adjustment gain of each a first K intermediate nodes is increased by a product of ‘R’ and ‘n’ , and an adjustment gain of each a second K intermediate nodes is decreased by a product of ‘R’ and ‘n’ , ‘R’ is an adjustment step, and ‘n’ is an integer with a value range of from 1 to K.
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of ceil (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K-ceil (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’ , wherein ‘R’ is an adjustment step, and ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of floor (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K-floor (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’
  • ‘R’ is an adjustment step
  • ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • the adjustment step ‘R’ is determined based on a minimum resolution used by the terminal device 110 to distinguish different paths, the larger minimum resolution, the larger value of ‘R’ .
  • the adjustment step ‘R’ is determined based on a minimum resolution used by the terminal device to distinguish different paths.
  • the network device may receive information about the minimum resolution from the terminal device.
  • the network device may transmit, to the terminal device, a message comprising a set of first information of a set of associated intermediate nodes of the terminal device, each of the set of associated intermediate nodes being associated with a path between the network device and the terminal device.
  • At block 720 determine at least one associated intermediate node from the set of associated intermediate nodes for performing positioning measurement.
  • 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 8.
  • 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 memory 820 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 820 is shown in the device 800, there may be several physically distinct memory modules in the device 800.
  • the processor 810 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 800 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a network device comprising a circuitry.
  • the circuitry is configured to: transmit a first reference signal (RS) configuration to a terminal device; transmit at least one second reference signal (RS) configuration to at least one intermediate node, wherein the intermediate node reflects RSs from the network device; receive, from the terminal device, a first measurement report comprising measurement results about at least one first path; and transmit, a third RS configuration to a first intermediate node of the at least one intermediate node, the third RS configuration being different from the second RS configuration configured for the first intermediate node; receive, from the terminal device, a second measurement report comprising measurement results about at least one second path; and determine, based on the measurement results about at least one first path and the measurement results about at least one second path, first information of the first intermediate node comprises at least one of the following: whether the first intermediate node is associated with a path between the network device and the terminal device, or location information of the first intermediate node.
  • RS reference signal
  • RS second reference signal
  • 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 network apparatus comprises means for transmitting a first reference signal (RS) configuration to a terminal device; means for transmitting at least one second reference signal (RS) configuration to at least one intermediate node, wherein the intermediate node reflects RSs from the network device; means for receiving, from the terminal device, a first measurement report comprising measurement results about at least one first path; and means for transmitting, a third RS configuration to a first intermediate node of the at least one intermediate node, the third RS configuration being different from the second RS configuration configured for the first intermediate node; means for receiving, from the terminal device, a second measurement report comprising measurement results about at least one second path; and means for determining, based on the measurement results about at least one first path and the measurement results about at least one second path, first information of the first intermediate node comprises at least one of the following: means for whether the first intermediate node is associated with a path between the network device and the terminal device, or means for location information of the first intermediate node
  • the first apparatus may comprise means for performing the respective operations of the method 600. In some example embodiments, the first apparatus may further comprise means for performing other operations in some example embodiments of the method 600.
  • the means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.
  • a terminal apparatus comprises means for receiving, from a network device, a message comprising a set of first information of a set of associated intermediate nodes of a terminal device, each of the set of associated intermediate nodes being associated with a path between the network device and the terminal device; means for determining at least one associated intermediate node from the set of associated intermediate nodes for performing positioning measurement; and means for determining a position of terminal device by measuring reflection signals from at least one associated intermediate node.
  • the second apparatus may comprise means for performing the respective operations of the method 700.
  • the second apparatus may further comprise means for performing other operations in some example embodiments of the method 700.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • embodiments of the present disclosure provide the following aspects.
  • a network device comprising: the first device may transmit a first reference signal (RS) configuration to a terminal device; transmit at least one second reference signal (RS) configuration to at least one intermediate node, wherein the intermediate node reflects RSs from the network device; receive, from the terminal device, a first measurement report comprising measurement results about at least one first path; and transmit, a third RS configuration to a first intermediate node of the at least one intermediate node, the third RS configuration being different from the second RS configuration configured for the first intermediate node; receive, from the terminal device, a second measurement report comprising measurement results about at least one second path; and determine, based on the measurement results about at least one first path and the measurement results about at least one second path, first information of the first intermediate node comprises at least one of the following: whether the first intermediate node is associated with a path between the network device and the terminal device, or location information of the first intermediate node.
  • RS reference signal
  • RS second reference signal
  • the network device may transmit, at least one further third RS configuration to at least one the intermediate node different from the first intermediate node, each further third RS configuration being different from the second RS configuration configured for a respective intermediate node, wherein a total number of the third RS configuration and the at least one further third RS configuration is smaller than a number of the at least one first path reported in the first measurement, or wherein the total number equals to a number of path with a measurement result equal to or higher than a threshold, or wherein the total number is equal to or smaller than a maximum number.
  • a time length of a duration used for collecting measurement reports is equal to or smaller than a threshold, and each measurement result comprises measurement results about at least one path.
  • third RS configuration is different from the second RS configuration in at least one of the following aspects: a reflecting gain, a reflecting phase, a space between antennas used for reflecting, or a number of antennas used for reflecting.
  • the first measurement report indicates at least one of the following: at least one measured signal strength of the at least one first path, at least one time delay of the at least one first path, or at least one direction information for receiving the at least one first path.
  • the reference time point is synchronization time or the earliest receiving time of the at least one receiving time, or each of the at least one AoA is indicated by at least one absolute AOA value of the at least one path of the at least one first path, each of the at least one AoA is indicated by a difference between an absolute AoA value of the AoA and a reference AoA, or one of at least one AoA is used as a reference AoA and indicated by an absolute AoA value, and each of the other AoAs is indicated by a differential value between an absolute AoA value of the other AoA and the reference AoA or between the absolute AoA value of the AoA and a previous absolute AoA value.
  • 2K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer, and wherein, an adjustment gain of each a first K intermediate nodes is increased by a product of ‘R’ and ‘n’ , and an adjustment gain of each a second K intermediate nodes is decreased by a product of ‘R’ a nd ‘n’ , ‘R’ is an adjustment step, and ‘n’ is an integer with a value range of from 1 to K.
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of ceil (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K-ceil (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’ , wherein ‘R’ is an adjustment step, and ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • K intermediate nodes are reconfigured by corresponding third RS configurations, and K is an integer.
  • An adjustment gain of each of floor (K/2) intermediate nodes is increased by a product of ‘R’ and ‘n’
  • an adjustment gain of each of the other K-floor (K/2) intermediate nodes is decreased by a product of ‘R’ and ‘m’
  • ‘R’ is an adjustment step
  • ‘n’ and ‘m’ are integers with a value smaller than or equal to ceil (K/2) .
  • the adjustment step ‘R’ is determined based on a minimum resolution used by the terminal device 110 to distinguish different paths, the larger minimum resolution, the larger value of ‘R’ .
  • the adjustment step ‘R’ is determined based on a minimum resolution used by the terminal device to distinguish different paths.
  • the network device may receive information about the minimum resolution from the terminal device.
  • the network device may determine a path by comparing the measurement results about at least one first path and the measurement results about at least one second path, a comparation result indicating a measurement result of the path is changed; and in accordance with a determination that the change is aligned with the difference between the two configurations for the first intermediate node, determine the path is associated with the first intermediate node.
  • the first measurement report indicates at least one of the following: at least one measured signal strength of the at least one first path, at least one time delay of the at least one first path, or at least one direction information for receiving the at least one first path.
  • the first measurement further comprises an indication indicating time information of a resource used for obtaining the measurement results about at least one first path.
  • the terminal device may transmit information about a minimum resolution used by the terminal device to distinguish different paths to the network device.
  • a network 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 network device discussed above.
  • a terminal 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 terminal device discussed above.
  • 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 network device discussed above.
  • 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 terminal 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 network 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 terminal device discussed above.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGS. 1 to 8.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
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  • Physics & Mathematics (AREA)
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Abstract

Des modes de réalisation donnés à titre d'exemple de la présente divulgation concernent un procédé de communication. Dans une solution, un dispositif réseau transmet une première configuration de signal de référence (RS) à un dispositif terminal ; transmet au moins une deuxième configuration de RS à au moins un nœud intermédiaire, le nœud intermédiaire reflétant les RS provenant du dispositif réseau ; reçoit, depuis le dispositif terminal, un premier rapport de mesure comprenant des résultats de mesure concernant au moins un premier trajet ; transmet une troisième configuration de RS à un premier nœud intermédiaire parmi le ou les nœuds intermédiaires, la troisième configuration de RS étant différente de la deuxième configuration de RS configurée pour le premier nœud intermédiaire ; reçoit, depuis le dispositif terminal, un second rapport de mesure comprenant des résultats de mesure concernant au moins un second trajet ; et effectue une détermination sur la base des résultats de mesure concernant au moins un premier trajet et des résultats de mesure concernant au moins un second trajet.
PCT/CN2024/084900 2024-03-29 2024-03-29 Procédés, dispositifs et support de stockage informatique de communication Pending WO2025199973A1 (fr)

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CN115967982A (zh) * 2021-10-11 2023-04-14 维沃软件技术有限公司 处理方法、测量方法、装置、设备及计算机存储介质
CN116746236A (zh) * 2020-12-17 2023-09-12 高通股份有限公司 可重配置智能表面辅助式定位
CN117043636A (zh) * 2021-03-30 2023-11-10 高通股份有限公司 用户设备利用可重配置智能表面（ris）通过往返时间的定位
US20240031980A1 (en) * 2021-03-03 2024-01-25 Qualcomm Incorporated Measurement of sounding reference signal reflections off of reconfigurable intelligent surfaces

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Publication number Priority date Publication date Assignee Title
CN116746236A (zh) * 2020-12-17 2023-09-12 高通股份有限公司 可重配置智能表面辅助式定位
US20240031980A1 (en) * 2021-03-03 2024-01-25 Qualcomm Incorporated Measurement of sounding reference signal reflections off of reconfigurable intelligent surfaces
CN117043636A (zh) * 2021-03-30 2023-11-10 高通股份有限公司 用户设备利用可重配置智能表面（ris）通过往返时间的定位
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