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WO2025175584A1 - Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées - Google Patents

Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées

Info

Publication number
WO2025175584A1
WO2025175584A1 PCT/CN2024/078456 CN2024078456W WO2025175584A1 WO 2025175584 A1 WO2025175584 A1 WO 2025175584A1 CN 2024078456 W CN2024078456 W CN 2024078456W WO 2025175584 A1 WO2025175584 A1 WO 2025175584A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
sensing
sensing signal
communication
transmit
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/CN2024/078456
Other languages
English (en)
Inventor
Jin Yang
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/CN2024/078456 priority Critical patent/WO2025175584A1/fr
Publication of WO2025175584A1 publication Critical patent/WO2025175584A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0232—Avoidance by frequency multiplex
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0235—Avoidance by time multiplex

Definitions

  • Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to device, method and computer readable medium for Integrated Sensing And Communication (ISAC) .
  • IIC Integrated Sensing And Communication
  • ISAC is listed as a new key feature of six scenarios in the sixth generation (6G) system.
  • 6G sixth generation
  • 3GPP Third Generation Partnership Project
  • example embodiments of the present disclosure provide a device, method and computer readable medium for ISAC.
  • a first device comprising a processor.
  • the processor is configured to cause the first device to: determine whether to transmit a sensing signal on a first resource, wherein the first resource is overlapping with a second resource in time domain or frequency domain, and the second resource is for transmission of a communication signal; based on determining not to transmit the sensing signal on the first resource, drop transmission of the sensing signal; based on determining to transmit the sensing signal on the first resource, determine first spatial information of the sensing signal on the first resource; and transmit the sensing signal based on the first spatial information.
  • a method for ISAC comprises: determining whether to transmit a sensing signal on a first resource, wherein the first resource is overlapping with a second resource in time domain or frequency domain, and the second resource is for transmission of a communication signal; based on determining not to transmit the sensing signal on the first resource, dropping transmission of the sensing signal; based on determining to transmit the sensing signal on the first resource, determining first spatial information of the sensing signal on the first resource; and transmitting the sensing signal based on the first spatial information.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor of a device, cause the device to perform the method according to the second aspect.
  • FIGS. 1A, 1B and 1C illustrate an example communication network in which embodiments of the present disclosure can be implemented, respectively;
  • Fig. 10 illustrates an example of SDM of a sensing signal with a communication signal in accordance with some embodiments of the present disclosure
  • Figs. 12A, 12B and 12C illustrate an example of a beam guard in accordance with some embodiments of the present disclosure, respectively.
  • Fig. 13 is a simplified block diagram of a device that is suitable for implementing 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) , Network-controlled Repeaters, 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
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI Artificial intelligence
  • Machine learning capability it generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25GHz to 71GHz) , frequency band larger than 100GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • 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 network device may have the function of network energy saving, Self-Organizing Networks (SON) /Minimization of Drive Tests (MDT) .
  • the terminal may have the function of power saving.
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • 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 6G networks.
  • 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 ‘some embodiments’ and ‘an embodiment’ are to be read as ‘at least some embodiments. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • the communication network 100A may include any suitable number of devices adapted for implementing embodiments of the present disclosure.
  • the terminal device 110 may comprise at least one of a sensing module and a communication module.
  • the terminal device 110 comprises a Uu sensing module 110-11, a sidelink sensing module 110-12 and a communication module 110-2.
  • the Uu sensing module 110-11 may be configured to perform a Uu sensing function based on the network assistance or control, and the Uu sensing function may comprise at least one of a downlink sensing function and an uplink sensing function.
  • the sidelink sensing module 110-12 may be configured to perform a sidelink sensing function.
  • the network device 130 may comprise at least one of a sensing module and a communication module.
  • the network device 130 comprises a sensing module 130-1 and a communication module 130-2.
  • the network device 130 may be implemented as a gNB in NR.
  • the communications in the communication network 100A may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , LTE, LTE-Evolution, LTE-Advanced (LTE-A) , 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 LTE
  • LTE-Evolution LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GERAN GSM EDGE Radio Access Network
  • MTC Machine Type Communication
  • the communications may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • 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) , the sixth generation (6G) communication protocols.
  • the communications in the communication network 100A may comprise ISAC.
  • the communication network with ISAC may structure sharing hardware architectures, channel characteristics and signal processing, and integrate types of sensing information, such as sensory data from the environment and radar based sensing information, and communication information to achieve higher resource efficiency and provide more intelligent and integrated network solutions.
  • the ISAC network can be applied to more extensive scenarios, including smart home, smart manufacturing, environmental monitoring, and so on.
  • the network device 130 may comprise at least one of the following:
  • the terminal device 120 may comprise at least one of the following:
  • the interface between the network device 130 and the terminal device 110 may be a Uu interface.
  • sidelink sensing related information may be exchanged on the Uu interface.
  • Uu sensing procedure may be performed between the network device 130 and the terminal device 110, and Uu sensing function related information may be exchanged, e.g., between the sensing module 130-1 of the network device 130 and the Uu sensing module 110-11 of the terminal device 110.
  • the interface between the terminal device 110 and the terminal device 120 may be a Unified Air Interface, such as PC5 interface.
  • a sidelink sensing procedure may be performed and sidelink sensing function related information may be exchanged on the PC5 interface, i.e., between the sidelink sensing module 110-12 of the terminal device 110 and the sidelink sensing module 120-12 of the terminal device 120.
  • Fig. 1B illustrates a schematic diagram of another example communication network 100B in which embodiments of the present disclosure can be implemented.
  • the example communication network 100B is similar to the example communication network 100A.
  • the example communication network 100B is different from the example communication network 100A mainly in that in the example communication network 100B, the network device 130 does not comprise the sensing module 130-1 but comprises a sensing control module 130-3.
  • the example communication network 100B further comprises a sensing transmission reception point (TRP) 140 and a sensing TRP 150.
  • TRP transmission reception point
  • the network device 130 may comprise at least one of the following:
  • the sensing control module 130-3 of the network device 130 may be configured to perform sensing management and control.
  • the sensing control module 130-3 may be also configured to generate a sensing control signal and transmit the sensing control signal to at least one of the sensing TRP 140 or the sensing TRP 150.
  • the sensing TRP 140 may comprise a sensing module 140-1.
  • the sensing module 140-1 may be configured to transmit, receive or measure a sensing signal based on the sensing control signal received from the network device 130.
  • the sensing TRP 140 may comprise at least one of the following:
  • the interface between the sensing TRP 140 and the terminal device 110 may be a Uu interface.
  • the interface may be transparent from the perspective of the terminal device 110.
  • the interface may be a new interface for the sensing TRP 140.
  • the sensing TRP 150 may comprise a sensing module 150-1.
  • the sensing module 150-1 may be configured to transmit, receive or measure a sensing signal based on the sensing control signal received from the network device 130.
  • the sensing TRP 150 may comprise at least one of the following:
  • the interface between the sensing TRP 150 and the terminal device 110 may be a Uu interface.
  • the interface may be transparent from the perspective of the terminal device 110.
  • the interface may be a new interface for the sensing TRP 150.
  • the terminal device 110 may comprise at least one of the following:
  • Fig. 1C illustrates a schematic diagram of a further example communication network 100C in which embodiments of the present disclosure can be implemented.
  • the example communication network 100C is similar to the example communication network 100B.
  • the example communication network 100C is different from the example communication network 100B in that in the example communication network 100C, the network device 130 does not comprise the sensing control module 130-3.
  • Each of the sensing module 140-1 of the sensing TRP 140 and the sensing module 150-1 of the sensing TRP 150 performs sensing management and control.
  • a communication signal and a sensing signal may be spatial multiplexed.
  • beam based SDM for the communication signal and the sensing signal should be considered.
  • a first device determines whether to transmit a sensing signal on a first resource.
  • the first resource is overlapping with a second resource in time domain or frequency domain, and the second resource is for transmission of a communication signal.
  • the first device drops transmission of the sensing signal.
  • the first device determines first spatial information of the sensing signal on the first resource. In turn, the first device transmits the sensing signal based on the first spatial information.
  • Fig. 2 illustrates a flowchart of an example method 200 in accordance with some embodiments of the present disclosure.
  • the method 200 can be implemented at a first device.
  • the first device may be implemented as the terminal device 110, the terminal device 120 or the network device 130 as shown in Fig. 1A.
  • the first device may be implemented as the terminal device 110, the network device 130, the sensing TRP 140 or the sensing TRP 150 as shown in Fig. 1B or 1C.
  • the first device determines whether to transmit a sensing signal on a first resource.
  • the first resource is overlapping with a second resource in time domain or frequency domain.
  • the second resource is for transmission of a communication signal.
  • the first device determines not to transmit the sensing signal on the first resource, the first device drops transmission of the sensing signal at block 220.
  • the first device determines, at block 230, first spatial information of the sensing signal on the first resource.
  • the first device transmits, at block 240, the sensing signal based on the first spatial information of the sensing signal.
  • SDM for the communication signal and the sensing signal may be achieved.
  • the first spatial information of the sensing signal may comprise information about at least one beam for the sensing signal.
  • the first spatial information of the sensing signal may comprise at least one of the following:
  • Fig. 3 illustrates a signaling chart illustrating an example process 300 for ISAC in accordance with some embodiments of the present disclosure.
  • the process 300 may be considered as an example implementation of the action 230 in Fig. 2.
  • the process 300 will be described with reference to Fig. 1C.
  • the process 300 may involve the terminal device 110 and the sensing TRP 140 in Fig. 1C.
  • the first device is implemented as the terminal device 110 in Fig. 1A, 1B or 1C.
  • the first spatial information of the sensing signal is exchanged between the Uu sensing module 110-11 of the terminal device 110 and the sidelink sensing module 110-12 of the terminal device 110.
  • the sidelink sensing module 110-12 may further select a sensing resource for its sidelink sensing signal transmission and avoid potential conflict or interference caused by the sensing signal transmission by the terminal device 110 which is scheduled by the network device 130, the sensing TRP 140, or the sensing TRP 150.
  • the first device may obtain second spatial information of the communication signal.
  • the first device is implemented as the sensing TRP 140
  • the second device is implemented as the network device 130 in Fig. 1B or 1C.
  • the second spatial information of the communication signal may be indicated by the network device 130 to the sensing TRP 140.
  • Fig. 6 illustrates a signaling chart illustrating an example process 600 for ISAC in accordance with some embodiments of the present disclosure.
  • the process 600 may be considered as an example implementation of the action 230 in Fig. 2.
  • the process 600 will be described with reference to Fig. 1A.
  • the process 600 may involve the sensing module 130-1 of the network device 130 and the communication module 130-2 of the network device 130 in Fig. 1A.
  • the resource for the first communication signal may be indicated by a second device to the first device.
  • CSI-RS channel state information reference signal
  • the first device may determine whether the sensing signal is a first sensing signal. If the sensing signal is the first sensing signal, the first device may determine to transmit the sensing signal and drop transmission of the communication signal.
  • the first sensing signal may have a high priority.
  • the first sensing signal may comprise the first sensing signal to be transmitted on a dedicated resource, or the first sensing signal is a sensing control signal.
  • the first device may determine not to transmit the sensing signal if the communication signal is not the second communication signal and the sensing signal is the second sensing signal.
  • Fig. 9A illustrates an example of the signal pair in accordance with some embodiments of the present disclosure.
  • the example of Fig. 9A will be described with reference to Fig. 1A or 1B.
  • a pair of a second communication channel and a second sensing channel is pre-defined in an ISAC system.
  • the second communication channel is SSB
  • the second sensing channel is a sensing measurement channel.
  • the sensing module 130-1 determines transmission scheme of the paired sensing measurement channel.
  • the second communication channel has a higher priority than that of the second sensing channel. That is, for the resources used for the second communication channel, the sensing module 130-1 should further determine the transmission scheme of the second sensing channel to avoid interference to the second communication channel.
  • the communication module 110-2 of the terminal device 110 indicates spatial information of the PUSCH to the sidelink sensing module 110-12 of the terminal device 110.
  • the spatial information of the PUSCH may comprise at least one of the following:
  • ⁇ an angle of the at least one beam for PUSCH
  • the sidelink sensing module 110-12 determines transmission scheme of the sidelink sensing channel.
  • the transmission scheme of the sidelink sensing channel may comprise at least one of the following:
  • ⁇ an angle of the at least one beam for the sidelink sensing channel
  • Uu communication signal i.e., PUSCH
  • PUSCH has a higher priority than that of the sidelink sensing signal.
  • a priority threshold for SDM of a sensing signal and a communication signal may be set.
  • the resources may be shared by the communication signal and the sensing signal according to the requirement and scenarios.
  • a first priority threshold may be set. The first device may determine whether to transmit the sensing signal based on the first priority threshold. If a first priority of the sensing signal exceeds the first priority threshold, the first device may determine to transmit the sensing signal. In other words, if the first priority of the sensing signal exceeds the first priority threshold, the sensing signal can be SDM with the communication signal.
  • an increasing priority value indicates a lower priority.
  • the first priority of the sensing signal exceeds the first priority threshold, the first priority is equal to or higher than the first priority threshold and a value of the first priority is equal to or lower than a value of the first priority threshold.
  • the first priority of the sensing signal exceeds the first priority threshold, the first priority is equal to or lower than the first priority threshold and a value of the first priority is equal to or higher than a value of the first priority threshold.
  • the first priority threshold may be pre-defined, configured or pre-configured.
  • the first priority threshold may be pre-defined, configured or pre-configured in an ISAC system.
  • the first priority of the sensing signal may comprise one of the following:
  • a first priority threshold is pre-configured.
  • a value of the first priority threshold is equal to k for sidelink.
  • the terminal device 110 can use SDM manner to transmit the sidelink sensing signal using overlapping resources with a sidelink communication signal.
  • the communication module 110-2 of the terminal device 110 determines a period (P) and resources for periodical PSSCH transmissions, and a beam for the PSSCH transmissions.
  • the second priority threshold may be pre-defined, configured or pre-configured.
  • the second priority threshold may be pre-defined, configured or pre-configured in an ISAC system.
  • the sensing TRP 140 indicates spatial information of the sensing signal in a period to the network device 130.
  • the spatial information of the sensing signal may comprise at least one of the following:
  • the PDSCH transmissions on slots #n, #n+1, #n+4 are with priority value lower than k, and with available beam direction which can SDM with the sensing signal on the same slot.
  • the network device 130 transmits the communication signal on slots #n, #n+1, #n+4 with different spatial features of the sensing signal on the slots.
  • a priority offset threshold may be set. The first device may determine whether to transmit the sensing signal based on the priority offset threshold. If a difference between the first priority of the sensing signal and the second priority of the communication signal exceeds the priority offset threshold, the first device may determine to transmit the sensing signal. In other words, if the difference between the first priority of the sensing signal and the second priority of the communication signal is equal to or higher than a value of the priority offset threshold, the first device may determine to transmit the sensing signal. This will be described later with reference to Fig. 11. In other embodiments, if the difference between the first priority of the sensing signal and the second priority of the communication signal is equal to or lower than a value of the priority offset threshold, the first device may determine to transmit the sensing signal.
  • Fig. 11 illustrates a signaling chart illustrating an example method 1100 for ISAC in accordance with some embodiments of the present disclosure.
  • the method 1100 may be considered as an example implementation of the method 200 in Fig. 2.
  • the method 1100 can be implemented at the first device.
  • the first device comprises a communication module and a sensing module.
  • the first device may be implemented as the terminal device 110, the terminal device 120 or the network device 130 as shown in Fig. 1A.
  • the first device may be implemented as the terminal device 110 or the network device 130 as shown in Fig. 1B.
  • a priority offset threshold between a sensing signal and communication signal is pre-configured in an ISAC system.
  • the priority offset threshold is equal to s.
  • a value of the first priority of the sensing signal is equal to s1.
  • a value of the second priority of the communication signal is equal to s2.
  • the communication module of the first device determines to transmit a communication signal.
  • the communication module determines spatial information of the communication signal at block 1110.
  • the sensing module of the first device determines to transmit a sensing signal. In turn, the sensing module determines spatial information of the sensing signal at block 1120.
  • the communication module and the sensing module exchange the spatial information of the communication signal and the spatial information of the sensing signals at block 1130.
  • the communication module and the sensing module determines, at block 1140, whether the communication signal and the sensing signal are assigned with overlapping resources with different spatial features.
  • the communication module and the sensing module determines, at block 1150, whether a difference between the first priority of the sensing signal and the second priority of the communication signal exceeds the priority offset threshold.
  • the first device transmits the communication signal and the sensing signal respectively at block 1160.
  • the communication module transmits the communication signal and the sensing module transmits the sensing signal.
  • the first device transmits, at block 1170, one of the communication signal and the sensing signal with a higher priority and drops transmission of another one of the communication signal and the sensing signal with a lower priority.
  • the first device transmits the communication signal and the sensing signal respectively at block 1180.
  • the communication module transmits the communication signal and the sensing module transmits the sensing signal.
  • a power threshold for SDM between a sensing signal and a communication signal may be set.
  • a first power threshold may be set. The first device may determine whether to transmit the sensing signal based on the first power threshold. If a first transmission power of the sensing signal does not exceed the first power threshold, the first device may determine to transmit the sensing signal. In other words, if the first transmission power of the sensing signal is not higher than the first power threshold, the sensing signal can be SDM with the communication signal. Alternatively, if the first transmission power of the sensing signal is equal to or lower than the first power threshold, the sensing signal can be SDM with the communication signal. Setting the first power threshold may control the potential interference between transmission of the sensing signal and transmission of the communication signal.
  • the first power threshold may be pre-defined, configured or pre-configured.
  • the first power threshold may be pre-defined, configured or pre-configured in an ISAC system.
  • the second sensing signal may comprise at least one of the following:
  • ⁇ the second sensing signal to be transmitted by a network device, a terminal device or a TRP
  • the first power threshold may pre-defined, configured or pre-configured independently for each type of the second sensing signal as described above.
  • a first power threshold is pre-configured.
  • the first power threshold is equal to M dBm for transmission of a sensing signal by a terminal device (such as the terminal device 110 or 120) .
  • the transmission power of the sensing signal should not be higher than M dBm.
  • a second power threshold may be set.
  • the first device may determine whether to transmit the sensing signal based on the second power threshold. If a second transmission power of the communication signal does not exceed the second power threshold, the first device may determine to transmit the sensing signal. In other words, if the second transmission power of the communication signal is not higher than the second power threshold, the sensing signal can be SDM with the communication signal. Alternatively, if the second transmission power of the communication signal is equal to or lower than the second power threshold, the sensing signal can be SDM with the communication signal. Setting the second power threshold may control the potential interference between transmission of the sensing signal and transmission of the communication signal.
  • the sensing signal can be SDM with the communication signal.
  • the sensing signal can be SDM with the communication signal.
  • the second power threshold may be pre-defined, configured or pre-configured.
  • the second power threshold may be pre-defined, configured or pre-configured in an ISAC system.
  • the second communication signal may comprise at least one of the following:
  • the second power threshold may pre-defined, configured or pre-configured independently for each type of the second communication signal as described above.
  • a power offset threshold may be set.
  • the first device may determine whether to transmit the sensing signal based on the power offset threshold. If a difference between a first transmission power of the sensing signal and a second transmission power of the communication signal does not exceed the power offset threshold, the first device may determine to transmit the sensing signal. In other words, if the difference is not higher than the power offset threshold, the sensing signal can be SDM with the communication signal. Alternatively, if the difference is equal to or lower than the power offset threshold, the sensing signal can be SDM with the communication signal. Setting the power offset threshold may control the potential interference between transmission of the sensing signal and transmission of the communication signal.
  • the first device may determine to transmit the sensing signal.
  • the sensing signal can be SDM with the communication signal.
  • the sensing signal can be SDM with the communication signal.
  • the power offset threshold may be pre-defined, configured or pre-configured.
  • the power offset threshold may be pre-defined, configured or pre-configured in an ISAC system.
  • a power offset threshold is pre-configured.
  • the power offset threshold is equal to m0 dB for a terminal device (such as the terminal device 110 or 120) .
  • the power offset threshold is equal to m1 for a network device (such as the network device 130) .
  • the difference of transmission powers of the two types of signals should not be higher than m0 dB.
  • the difference of transmission powers of the two types of signals should not be higher than m1 dB.
  • the first device may determine to transmit the sensing signal if a sum of a first transmission power of the sensing signal and a second transmission power of the communication signal is below a maximum transmission power of the first device.
  • the first device may determine whether a first priority of the sensing signal is higher than a second priority of the communication signal.
  • the first target transmission power of the sensing signal is represented by P_sen-init
  • the second target transmission power of the communication signal is represented by P_com-init
  • the maximum transmission power of the first device is represented by P_max.
  • the first device may determine the first transmission power as the first target transmission power and determine the second transmission power as a difference between the maximum transmission power and the first transmission power.
  • the first device may determine the second transmission power as the second target transmission power and determine the first transmission power as a difference between the maximum transmission power and the second transmission power.
  • the first device may determine the first spatial information of the sensing signal based on a beam guard between a first beam for the sensing signal and a second beam for the communication signal.
  • the beam guard may be defined as at least one of the following:
  • ⁇ a difference of a first width of the first beam and a second width of the second beam.
  • a threshold for the beam guard may be pre-defined, configured or pre-configured.
  • the threshold for the beam guard is also referred to as a beam guard threshold.
  • the first beam for the sensing signal should be transmitted with a beam guard that is equal to or greater than the threshold for the beam guard. Such embodiments may ensure sufficient spatial isolation between the communication signal and the sensing signal and control the interference to each other in an acceptable range.
  • the beam guard may be used for the first beam for the sensing signal and the second beam for the communication signal transmitted by a single device. Alternatively, in some embodiments, the beam guard may be used for the first beam for the sensing signal and the second beam for the communication signal transmitted by different devices.
  • a beam guard threshold is pre-configured for a first beam for a sensing signal and a second beam for a communication signal transmitted by a single device.
  • the beam guard may be pre-configured for the first beam for the sensing signal transmitted by the sensing module 130-1 of the network device 130 and the second beam for the communication signal transmitted by the communication module 130-2 of the network device 130.
  • a beam guard threshold is pre-configured for a first beam for a sensing signal and a second beam for a communication signal transmitted by different devices.
  • the beam guard threshold may be pre-configured for the first beam for the sensing signal transmitted by the sensing TRP 140 and the second beam for the communication signal transmitted by the network device 130.
  • a beam guard is defined as a second angle between a first central direction 1220 of the first beam and a second central direction 1222 of the second beam and a width of the first beam and the second beam.
  • the beam guard threshold is equal to 90 degree. That is, a threshold for the second angle is equal to 90 degree. Thus, the second angle should be equal to or greater than 90 degree.
  • a threshold for the width of the first beam and the second beam is equal to 30 degree.
  • the width of the first beam should not be greater than 30 degree, and the width of the second beam should not be greater than 30 degree.
  • a beam guard threshold is pre-defined for a first beam for a sensing signal and a second beam for a communication signal transmitted by a single device.
  • the beam guard threshold may be pre-defined for the first beam for the sensing signal transmitted by the sensing module 130-1 of the network device 130 and the second beam for the communication signal transmitted by the communication module 130-2 of the network device 130.
  • each of the first beam and the second beam is identified with an index.
  • the beam guard is defined as an offset between a first index of the first beam and a second index of the second beam, and a threshold for the offset is equal to 2. It means a difference or the offset between the first index of the first beam and the second index of the second beam should be equal to or greater than the threshold.
  • the network device 130 should transmit a beam with an index #1 for the communication signal and beams with indexes #4, 5 and 6 for the sensing signal, where the offset >2.
  • Fig. 13 is a simplified block diagram of a device 1300 that is suitable for implementing embodiments of the present disclosure.
  • the device 1300 can be considered as a further example embodiment of the first device. Accordingly, the device 1300 can be implemented at or as at least a part of the first device.
  • the device 1300 includes a processor 1310, a memory 1320 coupled to the processor 1310, a suitable transceiver 1340 coupled to the processor 1310, and a communication interface coupled to the transceiver 1340.
  • the memory 1310 stores at least a part of a program 1330.
  • the transceiver 1340 may be for bidirectional communications or a unidirectional communication based on requirements.
  • the transceiver 1340 may include at least one of a transmitter 1342 and a receiver 1344.
  • the transmitter 1342 and the receiver 1344 may be functional modules or physical entities.
  • the transceiver 1340 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • RN relay node
  • Uu interface for communication between the eNB/gNB and a terminal device.
  • embodiments of the present disclosure may provide the following solutions.
  • a first device comprising a processor.
  • the processor is configured to cause the first device to: determine whether to transmit a sensing signal on a first resource, wherein the first resource is overlapping with a second resource in time domain or frequency domain, and the second resource is for transmission of a communication signal; based on determining not to transmit the sensing signal on the first resource, drop transmission of the sensing signal; based on determining to transmit the sensing signal on the first resource, determine first spatial information of the sensing signal on the first resource; and transmit the sensing signal based on the first spatial information.
  • the first spatial information comprises at least one of the following: a first number of at least one beam for the sensing signal, a direction of the at least one beam, an angle of the at least one beam, a width of the at least one beam, 3dB beam width of the at least one beam, a transmission power of the at least one beam, a period of beam sweeping, or an antenna gain.
  • the first spatial information is pre-defined, configured or pre-configured.
  • the first device is caused to determine the first spatial information of the sensing signal by obtaining the first spatial information from a second device.
  • the first device is further caused to: obtain second spatial information of the communication signal.
  • the second spatial information comprises at least one of the following: a second number of at least one beam for the communication signal, a direction of the at least one beam, an angle of the at least one beam, a width of the at least one beam, 3dB beam width of the at least one beam, a transmission power of the at least one beam, a period of beam sweeping, or an antenna gain.
  • the first device is caused to: determine whether to transmit the sensing signal on the first resource based on the second spatial information; or determine the first spatial information of the sensing signal on the first resource based on the second spatial information.
  • the second spatial information is pre-defined, configured or pre-configured.
  • the first device comprises at least one of the following: a first sensing module, a second sensing module, or a communication module.
  • the first sensing module is caused to obtain second spatial information of the communication signal from the communication module; or the first sensing module is caused to obtain the second spatial information of the communication signal from the second sensing module; or the first device is caused to obtain the second spatial information of the communication signal from a second device.
  • the first device is caused to determine whether to transmit the sensing signal by: based on determining that the communication signal is a first communication signal, determining not to transmit the sensing signal.
  • the first communication signal comprises at least one of the following: a synchronization signal block (SSB) , a synchronization signal, a signal on physical broadcast channel (PBCH) , a channel state information reference signal (CSI-RS) , a signal on physical random access channel (PRACH) , a sounding reference signal (SRS) , or a positioning reference signal (PRS) .
  • SSB synchronization signal block
  • PBCH physical broadcast channel
  • CSI-RS channel state information reference signal
  • PRACH physical random access channel
  • SRS sounding reference signal
  • PRS positioning reference signal
  • the dedicated resource for the first sensing signal is pre-defined or pre-configured.
  • the second communication signal comprises at least one of the following: a one-shot communication signal, a periodic communication signal, a dynamic communication signal, a semi-static communication signal, a downlink communication signal, an uplink communication signal, a sidelink communication signal, the second communication signal to be transmitted by a network device or a terminal device, a communication control signal, or a communication data signal.
  • the first device is caused to determine whether to transmit the sensing signal based on a first priority threshold by: based on determining that a first priority of the sensing signal exceeds the first priority threshold, determining to transmit the sensing signal.
  • the first priority threshold is pre-defined, configured or pre-configured.
  • the first device is caused to determine whether to transmit the sensing signal based on a second priority threshold by: based on determining that a second priority of the communication signal exceeds the second priority threshold, determining to transmit the sensing signal.
  • the second priority threshold is pre-defined, configured or pre-configured.
  • the first device is caused to determine whether to transmit the sensing signal based on a priority offset threshold by: based on determining that a difference between a first priority of the sensing signal and a second priority of the communication signal exceeds the priority offset threshold, determining to transmit the sensing signal.
  • each of the first priority of the sensing signal or the second priority of the communication signal comprises one of the following: a layer 1 priority, a media access control layer priority, ProSe per-packet priority (PPPP) , or a channel access priority class (CAPC) .
  • a layer 1 priority a media access control layer priority
  • PPPP ProSe per-packet priority
  • CAC channel access priority class
  • the priority offset threshold is pre-defined, configured or pre-configured.
  • the first device is caused to determine whether to transmit the sensing signal based on a first power threshold by: based on determining that a first transmission power of the sensing signal does not exceed the first power threshold, determining to transmit the sensing signal.
  • the first device is caused to determine whether to transmit the sensing signal based on a second power threshold by: based on determining that a second transmission power of the communication signal does not exceed the second power threshold, determining to transmit the sensing signal.
  • the first device is further caused to: based on determining that a sum of a first target transmission power of the sensing signal and a second target transmission power of the communication signal is above a maximum transmission power of the first device, determining whether a first priority of the sensing signal is higher than a second priority of the communication signal; based on determining that the first priority is higher than the second priority, determine the first transmission power as the first target transmission power and determine the second transmission power as a difference between the maximum transmission power and the first transmission power; and based on determining that the first priority is lower than the second priority, determine the second transmission power as the second target transmission power and determine the first transmission power as a difference between the maximum transmission power and the second transmission power.
  • the first device is caused to determine whether to transmit the sensing signal based on a power offset threshold by: based on determining that a difference between a first transmission power of the sensing signal and a second transmission power of the communication signal does not exceed the power offset threshold, determining to transmit the sensing signal.
  • the beam guard is defined as at least one of the following: a first angle between the first beam and the second beam, a second angle between a first central direction of the first beam and a second central direction of the second beam, an offset between a first index of the first beam and a second index of the second beam, or a difference of a first width of the first beam and a second width of the second beam.
  • a threshold for the beam guard is pre-defined, configured or pre-configured.
  • a method for ISAC comprises: determining whether to transmit a sensing signal on a first resource, wherein the first resource is overlapping with a second resource in time domain or frequency domain, and the second resource is for transmission of a communication signal; based on determining not to transmit the sensing signal on the first resource, dropping transmission of the sensing signal; based on determining to transmit the sensing signal on the first resource, determining first spatial information of the sensing signal on the first resource; and transmitting the sensing signal based on the first spatial information.
  • a computer readable medium having instructions stored thereon.
  • the instructions when executed on at least one processor of a device, cause the device to perform the method according to the second aspect.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente divulgation concernent un dispositif, un procédé et un support lisible par ordinateur pour détection et communication intégrées (ISAC). Un premier dispositif détermine s'il faut transmettre un signal de détection sur une première ressource. La première ressource chevauche une seconde ressource dans le domaine temporel ou le domaine fréquentiel, et la seconde ressource est destinée à la transmission d'un signal de communication. S'il est déterminé de ne pas transmettre le signal de détection sur la première ressource, le premier dispositif abandonne la transmission du signal de détection. S'il est déterminé de transmettre le signal de détection sur la première ressource, le premier dispositif détermine des premières informations spatiales du signal de détection sur la première ressource. Ensuite, le premier dispositif transmet le signal de détection sur la base des premières informations spatiales.
PCT/CN2024/078456 2024-02-23 2024-02-23 Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées Pending WO2025175584A1 (fr)

Priority Applications (1)

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PCT/CN2024/078456 WO2025175584A1 (fr) 2024-02-23 2024-02-23 Dispositif, procédé et support lisible par ordinateur pour détection et communication intégrées

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