WO2026032373A1 - Procédé et appareil de retour d'informations - Google Patents

Procédé et appareil de retour d'informations

Info

Publication number
WO2026032373A1
WO2026032373A1 PCT/CN2025/113234 CN2025113234W WO2026032373A1 WO 2026032373 A1 WO2026032373 A1 WO 2026032373A1 CN 2025113234 W CN2025113234 W CN 2025113234W WO 2026032373 A1 WO2026032373 A1 WO 2026032373A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
information
station
feedback type
resource
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/CN2025/113234
Other languages
English (en)
Chinese (zh)
Inventor
戴基明
程型清
全超
高磊
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.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2026032373A1 publication Critical patent/WO2026032373A1/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
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • This application relates to the field of communication technology, and in particular to an information feedback method and apparatus.
  • Wireless sensing technology refers to the process of inferring and perceiving the surrounding environment by analyzing wireless signals "modulated" by various obstacles, such as channel status information (CSI).
  • the sensing process in wireless sensing technology includes the capability interaction phase, the establishment phase of the sensing and measurement session, the sensing and measurement interaction phase, and the sensing and measurement termination phase.
  • the sensing transmitter can send a null data packet (NDP) to the sensing receiver.
  • NDP null data packet
  • the sensing receiver receives the NDP and measures the CSI based on the received NDP.
  • This application provides an information feedback method and apparatus that can improve the overall efficiency of communication and sensing.
  • embodiments of this application provide an information feedback method.
  • This method can be applied to a first site, which may include a 5th generation (5G) communication device, a 6th generation (6G) communication device, or a wireless local area network (WLAN) device (including Wi-Fi devices or devices involved in the StarFlash Alliance, etc.), or may be a chip, functional module, processing system, or communication component disposed in the WLAN device.
  • the method includes:
  • the first station receives a first signal, which is the signal transmitted by the third station after passing through the channel.
  • the first station sends a second signal to the second station according to the feedback type.
  • the second signal is used by the second station to determine the channel information between the first station and the third station.
  • the feedback type is a first feedback type
  • the second signal includes first information, which is the channel information determined based on the first signal and the first reference information; or, when the feedback type is a second feedback type, the second signal includes second information, which is the information determined based on the first signal, and the second information is different from the first information.
  • the third station can be the same as the second station. That is, the second station can determine the channel information between itself and the first station based on the second signal. As another example, the third station is different from both the first and second stations. That is, the second station can determine the channel information between the first and third stations based on the second signal.
  • the feedback type refers to the type of second signal fed back by the first station based on the first signal.
  • the first signal and the second signal are named to distinguish different information; similarly, the first information and the second information are also named to distinguish different information.
  • the names of each information or signal are merely examples and are not intended to limit the embodiments of this application.
  • the first information and the second information can also be called different signals.
  • the first signal and the second signal can also be called different information, etc.
  • the aforementioned first reference information can be used for channel estimation.
  • this first reference information can be used for more than just channel estimation; it can also be used for other functions, and the embodiments of this application are not limited thereto.
  • the first signal can be a signal transmitted through a channel after being sent by a third station.
  • the first signal is reference information transmitted through a channel (e.g., the first signal is second reference information)
  • this first signal can be used for sensing.
  • the second reference information can be information transmitted through a channel after the first reference information.
  • the first signal is non-reference information transmitted through a channel (i.e., the first signal is non-reference information)
  • this first signal can be used for both sensing and communication.
  • the first station can feed back a second signal based on the first signal, thereby allowing the second station to determine the channel information between the first and third stations based on the second signal. This improves the overall efficiency of sensing and communication.
  • the first station can feed back the second signal according to different feedback types, adapting to different application scenarios and further improving the overall efficiency of sensing and communication.
  • the second information which is information determined based on the first signal, includes: the second information being determined based on the first signal and information not determined based on the first reference information.
  • the first piece of information can be channel status information (CSI), channel frequency response (CFR), or channel impulse response (CIR), etc.
  • the second piece of information can be a composite of the transmitted signal without channel estimation and CSI, or in other words, the second piece of information can be the first signal without channel estimation processing.
  • different feedback types can correspond to different processing methods, so that the first station can feed back different second signals to match different application scenarios and improve the overall efficiency of perception and communication.
  • the feedback type is determined through negotiation between the first and second sites, or the feedback type is defined by a standard, or the feedback type is determined by the first site.
  • the feedback type can be determined through negotiation between stations, such as by exchanging information.
  • the feedback type can be determined by the first station itself, such as by the first station determining the feedback type and then feeding it back in the second signal.
  • the feedback type can be defined by a standard.
  • the method further includes: a first station receiving first indication information, the first indication information being used to indicate a feedback type.
  • the first station can clearly know the type of feedback through this first instruction information.
  • the method further includes: a first station sending first indication information, the first indication information being used to indicate the feedback type.
  • the first station can send the first instruction information to the second station.
  • the first station can suggest a feedback type to the second station, so the second station can send information to the first station including information indicating the feedback type.
  • the first indication information is included in a radio frame, or in control information, or in higher-layer signaling.
  • control information may include downlink control information (DCI) or link control information sent by the grant (G) node.
  • DCI downlink control information
  • G grant node
  • the wireless frame is either a sensing measurement request frame or a sensing measurement response frame.
  • the second signal also includes information indicating the type of feedback.
  • the feedback type is determined by the resource transmitting the first signal.
  • the feedback type is determined by the resources used to transmit the first signal, or it can be expressed as the feedback type corresponding to the resources used to transmit the first signal.
  • This method of determining the feedback type can be defined by a standard, or determined through negotiation between the first station and the second station, etc., and this embodiment does not limit this approach.
  • the feedback type is the second feedback type.
  • the third station can transmit a first signal within resources used for transmitting control information.
  • This first signal can be used to carry either control information or non-control information. Transmitting non-control information within resources designated for control information transmission is possible because those resources may not currently have any control information to transmit; thus, reusing resources not used for control information transmission improves resource utilization.
  • the first station can also utilize either control or non-control information for sensing, further enhancing the overall efficiency of communication and sensing.
  • the feedback type is either the first feedback type or the second feedback type.
  • the third station can transmit a first signal within resources designated for broadcasting signals.
  • This first signal can be used to carry either broadcast or non-broadcast signals. Transmitting non-broadcast signals within resources designated for broadcasting signals is possible because there may be no broadcast signals to transmit in those resources temporarily; thus, reusing resources not used for broadcasting signals improves resource utilization.
  • the first station can also utilize either broadcast or non-broadcast signals for sensing, further enhancing the overall efficiency of communication and sensing.
  • the broadcast signal may include, but is not limited to, synchronization information, master information block (MIB), and system information block (SIB).
  • MIB master information block
  • SIB system information block
  • the feedback type is the second feedback type; or, if the resource transmitting the first signal is another resource among the first resources besides the second resource, then the feedback type is the first feedback type.
  • the first station can determine the feedback type based on the different resources used to transmit the first signal.
  • the first resource can be a resource for sensing
  • the second resource is a resource within the first resource used for communication and sensing (such as transmitting non-reference information).
  • non-reference information can be transmitted on the second resource used for sensing. This non-reference information can be used for communication between the sender and receiver, and also for determining channel information, thereby improving the overall efficiency of communication and sensing.
  • the method further includes: a first station receiving second indication information, the second indication information being used to indicate resources for transmitting the first signal.
  • the method further includes: a first station receiving third indication information, the third indication information being used to indicate whether the first signal is second reference information or non-reference information.
  • the second reference information can be the information obtained after the first reference information has been transmitted through the channel.
  • the third indication information can be sent by the second station.
  • the third indication information can indicate the type of the first signal, which can be reference information or non-reference information, thereby enabling the first station to determine the feedback type in combination with the type of the first signal.
  • the feedback type is either the first feedback type or the second feedback type; or, if the first signal is non-reference information, the feedback type is the second feedback type.
  • the feedback type can be the second feedback type. This allows the second station to obtain channel information between the first and third stations even if the first station does not perform channel estimation. Consequently, sensing is achieved without affecting communication, improving the overall efficiency of communication and sensing.
  • inventions of this application provide an information feedback method, which can be applied to a second site.
  • the second site may include 5G communication equipment, 6G communication equipment, or WLAN equipment (including Wi-Fi equipment or equipment involved in the StarFlash Alliance, etc.), or may be a chip, functional module, processing system, or communication component disposed in the WLAN equipment.
  • the method includes:
  • the second station receives a second signal, which is used by the second station to determine channel information between the first station and the third station; the second station determines the channel information between the first station and the third station based on the second signal; wherein, when the feedback type is a first feedback type, the second signal includes first information, which is channel information determined based on the first signal and first reference information; or, when the feedback type is a second feedback type, the second signal includes second information, which is information determined based on the first signal, and the second information is different from the first information.
  • the second station determines the channel information between the first and third stations based on the second signal, including: the second station determining the channel information between the first and third stations based on the feedback type. That is, the second station can parse the second signal according to the feedback type and obtain the aforementioned channel information from the second signal.
  • This channel information may include, but is not limited to, CSI, CFR, or CIR.
  • the second station determines the channel information between the first station and the third station based on the second signal, including: the second station determines the feedback type based on the second signal, and determines the channel information between the first station and the third station based on the feedback type.
  • the second information which is information determined based on the first signal, includes: the second information being determined based on the first signal and information not determined based on the first reference information.
  • the feedback type is determined through negotiation between the first and second sites, or the feedback type is defined by a standard, or the feedback type is determined by the first site.
  • the method further includes: a second station sending first indication information, which is used to indicate the feedback type.
  • the method further includes: a second station receiving first indication information, the first indication information being used to indicate a feedback type.
  • the first indication information is contained in a radio frame, or in control information, or in higher-layer signaling.
  • the wireless frame is either a sensing measurement request frame or a sensing measurement response frame.
  • the second signal also includes information indicating the type of feedback.
  • the feedback type is determined by the resource transmitting the first signal.
  • the feedback type is the second feedback type.
  • the first signal is used to carry control information, or the first signal is used to carry non-control information.
  • the resources for transmitting the first signal are included in the resources for transmitting the broadcast signal, and the feedback type is either a first feedback type or a second feedback type.
  • the first signal is used to carry a broadcast signal; or, the first signal is used to carry a non-broadcast signal.
  • the feedback type is the second feedback type; or, if the resource transmitting the first signal is another resource among the first resources besides the second resource, then the feedback type is the first feedback type.
  • the first resource is a resource for sensing
  • the second resource is a resource within the first resource used for communication and sensing.
  • the method further includes: a first station sending second indication information, the second indication information being used to indicate resources for transmitting the first signal.
  • the method further includes: a second station sending third indication information, the third indication information also being used to indicate whether the first signal is second reference information or non-reference information.
  • the feedback type is either the first feedback type or the second feedback type; or, if the first signal is non-reference information, the feedback type is the second feedback type.
  • embodiments of this application provide a communication device for executing the methods described in the first aspect, the second aspect, or any possible implementation thereof.
  • the communication device includes a module having the function of executing the methods in any one of the first or second aspects or any possible implementation thereof.
  • embodiments of this application provide a communication device, which includes a processor and a transceiver.
  • the processor is used to execute the processing steps in the method described in the first aspect, the second aspect, or any possible implementation thereof
  • the transceiver is used to execute the sending and receiving steps in the method described in the first aspect, the second aspect, or any possible implementation thereof.
  • embodiments of this application provide a chip, the communication device including logic circuitry and an interface, the logic circuitry and the interface being coupled; the interface being used for inputting and/or outputting information, and the logic circuitry being used for performing processing steps in the method as described in the first aspect, the second aspect, or any possible implementation.
  • embodiments of this application provide a computer-readable storage medium for storing a computer program that, when run on a computer, causes the methods described in the first aspect, the second aspect, or any possible implementation thereof to be executed.
  • embodiments of this application provide a computer program product that, when run on a computer, causes the methods described in the first aspect, the second aspect, or any possible implementation thereof to be executed.
  • embodiments of this application provide a communication system including a first station and a second station.
  • the first station is used to execute the method described in the first aspect or any possible implementation thereof
  • the second station is used to execute the method described in the second aspect or any possible implementation thereof.
  • Figure 1a is a schematic diagram of an architecture of a communication system provided in an embodiment of this application.
  • Figure 1b is a schematic diagram of another architecture of the communication system provided in an embodiment of this application.
  • FIG. 2 is a flowchart illustrating the information feedback method provided in an embodiment of this application.
  • FIG. 3 is a schematic flowchart of the signal processing provided in an embodiment of this application.
  • Figure 4a is a schematic diagram of an interaction flow for a feedback type provided in an embodiment of this application.
  • Figure 4b is a schematic diagram of another interactive flow of the feedback type provided in the embodiment of this application.
  • Figure 5a is a schematic diagram of the format of the perception measurement request frame provided in an embodiment of this application.
  • Figure 5b is a schematic diagram of the format of the sensing measurement response frame provided in an embodiment of this application.
  • Figure 6 is a schematic diagram of a communication device provided in an embodiment of this application.
  • Figure 7 is a schematic diagram of another structure of the communication device provided in an embodiment of this application.
  • Figure 8 is a schematic diagram of another structure of the communication device provided in the embodiments of this application.
  • At least one (item) refers to one or more
  • “more than one” refers to two or more
  • “at least two (items)” refers to two or three or more
  • “and/or” is used to describe the relationship between related objects, indicating that there can be three relationships.
  • a and/or B can mean: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural.
  • “Or” indicates that there can be two relationships, such as only A exists and only B exists; when A and B are not mutually exclusive, it can also mean that there are three relationships, such as only A exists, only B exists, and both A and B exist simultaneously.
  • At least one (item) of the following” or similar expressions refer to any combination of these items.
  • at least one (item) of a, b, or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c".
  • instruction can include direct instruction, indirect instruction, explicit instruction, and implicit instruction.
  • instruction information can include direct instruction, indirect instruction, explicit instruction, and implicit instruction.
  • the information indicated by the instruction information is called the information to be instructed.
  • the information to be instructed there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a relationship between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon.
  • the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent.
  • the information to be instructed can be sent as a whole or divided into multiple sub-information pieces, and the sending period and/or timing of these sub-information pieces can be the same or different.
  • send and “receive” indicate the direction of signal transmission.
  • send information to XX can be understood as the destination of the information being XX, which can include direct transmission via the air interface or indirect transmission via the air interface from other units or modules.
  • Receiveive information from YY can be understood as the source of the information being YY, which can include direct reception from YY via the air interface or indirect reception from YY via the air interface from other units or modules.
  • Send can also be understood as the "output” of a chip interface, and “receive” can also be understood as the "input” of a chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, traces, or interfaces.
  • This application provides an information feedback method and apparatus, which improves the overall efficiency of communication and sensing.
  • the technical solutions provided in this application can be applied to wireless local area network (WLAN) systems, such as SparkLink (or NearLink) or Wi-Fi.
  • WLAN wireless local area network
  • the technical solutions provided in this application can also be applied to SparkLink (or NearLink) standard protocols, such as SparkLink Low Energy (SLE) wireless communication systems.
  • SLE SparkLink Low Energy
  • the technical solutions provided in the embodiments of this application can be applied to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series protocols (or standards), such as the 802.11be protocol, the 802.11bn protocol (or Wi-Fi 8, also known as Ultra High Reliability (UHR) or Ultra High Reliability and Throughput (UHRT)), or next-generation protocols of the 802.11bn protocol, or protocols supporting ambient power (AMP), etc., and will not be listed one by one.
  • IEEE Institute of Electrical and Electronics Engineers
  • 802.11 series protocols such as the 802.11be protocol, the 802.11bn protocol (or Wi-Fi 8, also known as Ultra High Reliability (UHR) or Ultra High Reliability and Throughput (UHRT)
  • next-generation protocols of the 802.11bn protocol or protocols supporting ambient power (AMP), etc.
  • WPANs wireless personal area networks
  • MMW millimeter wave
  • IMMW integrated millimeter wave
  • UWB ultra-wideband
  • the technical solutions provided in the embodiments of this application can be applied to the IEEE 802.15 series protocols, such as the 802.15.4a, 802.15.4z, or 802.15.4ab protocols, or a future generation of UWB WPAN protocols, etc., and will not be listed one by one.
  • the technical solutions provided in the embodiments of this application can also be applied to the following communication systems, such as Internet of Things (IoT) systems, vehicle-to-everything (V2X, where X can represent anything), device-to-device (D2D), narrowband Internet of Things (NB-IoT) systems, long-term evolution (LTE) systems, 5th-generation (5G) communication systems, and new communication systems that will emerge in the future development of communication, etc.
  • V2X can include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), or vehicle-to-network (V2N) communication.
  • the method provided in this application embodiment can be implemented by a communication device in a communication system.
  • the communication device can be an access point (AP) or a station (STA).
  • AP access point
  • STA station
  • An Access Point is a device with wireless communication capabilities that supports communication, sensing, or power transmission using WLAN protocols. It has the function of communicating or sensing with other devices in a WLAN network (such as non-access point stations (non-AP STAs) or other access points), and can also have the function of communicating, sensing, or transmitting power with other devices.
  • a WLAN network such as non-access point stations (non-AP STAs) or other access points
  • an access point acts as a bridge connecting wired and wireless networks, primarily connecting various wireless network clients together and then connecting the wireless network to an Ethernet network.
  • an access point can be called an Access Point Station (AP STA).
  • This wireless communication device can be a complete device or a chip, processing system, or functional module installed within a complete device.
  • the AP in the embodiments of this application is a device that provides services to non-AP STAs and can support 802.11 series protocols or subsequent protocols.
  • an access point can be an access point for a terminal (such as a mobile phone) to enter a wired (or wireless) network, mainly deployed in homes, buildings, and parks, with a typical coverage radius of tens to hundreds of meters. Of course, it can also be deployed outdoors.
  • an AP can be a communication entity such as a communication server, router, switch, or bridge; APs can include various forms of macro base stations, micro base stations, and repeater stations.
  • an AP can also be a chip, processing system, or module within the above-mentioned devices, thereby implementing the methods and functions of the embodiments of this application.
  • a Station-Style is a device with wireless communication capabilities that supports communication, sensing, or power transmission using WLAN protocols. It has the ability to communicate, sense, or transmit power with other non-AP STAs or access points in a WLAN network.
  • a station can be called a non-access point station (non-AP STA).
  • non-AP STA any user communication device that allows a user to communicate with an AP (Access Point) or sense or transmit power, and thus communicate with the WLAN.
  • This wireless communication device can be a complete device, or it can be a chip, processing system, or functional module installed in a complete device.
  • an STA can be a wireless communication chip, a wireless sensor, or a wireless communication terminal, and can also be referred to as a user.
  • an STA can be a mobile phone supporting Wi-Fi communication, a tablet computer supporting Wi-Fi communication, a set-top box supporting Wi-Fi communication, a smart TV supporting Wi-Fi communication, a smart wearable device supporting Wi-Fi communication, an in-vehicle communication device supporting Wi-Fi communication, and a computer supporting Wi-Fi communication.
  • STA can also be a chip, processing system, or module in the various types of devices described above, thereby implementing the methods and functions of the embodiments of this application.
  • Figure 1a is a schematic diagram of an architecture of a communication system provided in an embodiment of this application.
  • the embodiments of this application can be applied to scenarios such as communication or sensing between AP and non-AP STA, between APs, or between non-AP STAs in a WLAN, and the embodiments of this application do not limit this.
  • an AP can communicate or sense with a single non-AP STA, or an AP can communicate or sense with multiple non-AP STAs simultaneously.
  • communication or sensing between an AP and multiple non-AP STAs can be further divided into downlink transmission where the AP sends signals to multiple non-AP STAs simultaneously, and uplink transmission where multiple non-AP STAs send signals to the AP.
  • the non-AP STA is a mobile phone and the AP is a router as an example, and it does not represent a limitation on the types of APs and non-AP STAs in the embodiments of this application.
  • the number of APs and the number of non-AP STAs shown in Figure 1a are only examples. In specific implementations, the number of APs or non-AP STAs can be more or less, and the embodiments of this application do not limit this.
  • the communication device can be a grant (G) station or a terminal (T) station.
  • the G site can possess communication and management capabilities, including communication management capabilities such as connection management, resource scheduling, or information security management.
  • the G site can send resource management information or data scheduling information, such as access layer resource management information.
  • the T site can possess communication capabilities and can transmit services with the G site.
  • the T site is a site that receives resource management information (such as access layer resource management information) or data scheduling information and sends data based on that information.
  • the T site may include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), lidar, battery cells, etc.
  • station A can be a G station, but in another network topology, station A might be a T station.
  • this station can be a T station in some network topologies and a G station in others.
  • Figure 1b is a schematic diagram of another architecture of the communication system provided in an embodiment of this application.
  • the communication system may include one or more G sites and one or more T sites.
  • Figure 1b exemplarily illustrates one G site and two T sites. T sites can be connected to G sites, and T sites can also be connected to each other.
  • the first signal and the second signal shown below are named to distinguish different information. Similarly, the first information and the second information are also named to distinguish different information.
  • the names of each information or signal are merely examples and are not intended to limit the embodiments of this application.
  • the first information and the second information can also be called different signals.
  • the first signal and the second signal can also be called different information, etc.
  • Figure 2 is a flowchart illustrating the information feedback method provided in an embodiment of this application.
  • the description of the first, second, or third station involved in this method can be found in Figures 1a or 1b, etc., and will not be detailed here.
  • the first station can be a non-AP STA1
  • the second station can be an AP
  • the third station can be a non-AP STA2.
  • the first station can be T node 1
  • the second station can be a G node
  • the third station can be T node 2. Specific product forms of the first, second, or third station will not be listed here.
  • the third station is the same as the second station.
  • the second station is both the transmitter and receiver of the first signal.
  • the first station feeds back the second signal using a second feedback type, thereby ensuring that only the second station can determine the channel information, improving information security.
  • the first station can feed back the second signal using a first feedback type, reducing implementation complexity.
  • the third station differs from the first station and also from the second station.
  • the third station is the transmitter of the first signal
  • the second station is the receiver of the second signal.
  • the target receiver of the first signal may not be the first station.
  • the first station can still use the first signal to feed back the second signal, improving resource utilization.
  • the first station feeds back the second signal using a second feedback type, thereby ensuring that only the second station can determine the channel information, improving information security.
  • the first station feeding back the second signal using a first feedback type reduces implementation complexity.
  • the method includes:
  • the third station sends a signal.
  • the first station receives the first signal, which is the signal sent by the third station after being transmitted through the channel.
  • the first signal is the information obtained after the first reference information has been transmitted through the channel.
  • the information obtained after the first reference information has been transmitted through the channel can be the second reference information, that is, the first signal is the second reference information.
  • the first signal can be used for sensing.
  • the first reference information can be used for channel estimation.
  • the first reference information can be used for more than just channel estimation, but also for other functions, which is not limited in this application embodiment.
  • the first reference information can also be called known information or predefined information, that is, information known to both the sender and receiver. If a set of reference information is agreed upon, the first reference information is the information in that set of reference information.
  • the above-mentioned set of reference information can be defined by a standard, or defined by a third station, or negotiated by a third station and a first station, or negotiated by a third station and other stations, which is not limited in this application embodiment.
  • the first signal is information that has been transmitted through the channel after non-reference information has been received.
  • the first signal can be used for both communication and sensing.
  • Non-reference information can also be referred to as unknown information.
  • the first station can still determine the second information based on the first signal.
  • the second information can be used by the second station to determine the channel information between the first station and the third station.
  • the target receiver of the first signal may be the first station, or it may not be the first station (such as the second station or a station other than the first and second stations).
  • the target medium access control (MAC) address in the first signal indicates that the target receiver is the first station, or another station.
  • the target identifier in the first signal indicates that the target receiver is the first station, or another station.
  • the method shown in FIG2 before the first station receives the first signal, the method shown in FIG2 further includes: the second station sending second indication information, and the first station receiving the second indication information, which is used to indicate the resources for transmitting the first signal.
  • the second indication information may be included in the control information, such as DCI or link control information sent by the G node.
  • the second indication information may be included in higher-layer signaling or radio frames, etc., and this application embodiment does not limit this.
  • the resource for transmitting the first signal is included in the first resource.
  • This first resource is a resource for sensing. That is, the first resource has been configured to perform a sensing task.
  • the first resource can be used to transmit reference information.
  • the resource for transmitting the first signal, as indicated by the second indication information, can be the first resource.
  • the resource for transmitting the first signal can be a second resource among the first resources.
  • This second resource is a resource used for communication and sensing.
  • the second resource can be used to transmit non-reference information.
  • the resource for transmitting the first signal indicated by the second indication information can be a second resource among the first resources. That is, although the first resource is configured for transmitting reference information, the second indication information can indicate that the second resource among the first resources is used for transmitting non-reference information.
  • the resource for transmitting the first signal can also be other resources among the first resources besides the second resource. This other resource can be used to transmit reference information.
  • the information indicating the first resource and the information indicating the second resource may be included in the same second instruction information or in different second instruction information, such as the information indicating the first resource being included in second instruction information #1 and the information indicating the second resource being included in second instruction information #2.
  • the resources for transmitting the first signal are included within the resources for transmitting information A.
  • This information A includes, but is not limited to, control information, broadcast signals, channel status information reference signals (CSI-RS), or sounding reference signals (SRS).
  • the first signal may be information A, or it may not be information A. Transmitting non-information A within the resources used for transmitting information A is because there is no information A to transmit in a portion of the resources used for transmitting information A; thus, by multiplexing idle resources to transmit non-information A, resource utilization is improved.
  • the method shown in Figure 2 before the first station receives the first signal, the method shown in Figure 2 further includes: the second station sending third indication information, and the first station receiving the third indication information, which is used to indicate whether the first signal is second reference information or non-reference information.
  • the second station can indicate to the first station whether the first signal received by the first station is reference information or non-reference information. This allows the first station to promptly and effectively ascertain the type of the first signal (reference information or non-reference information).
  • the first station can also determine the feedback type based on the type of the first signal. The method for determining the feedback type is detailed below and will not be elaborated upon here.
  • the third indication information may be included in the control information, such as DCI or link control information sent by the G node.
  • the third indication information may be included in higher-layer signaling or radio frames, etc., and this application embodiment does not limit this.
  • the type of the first signal can be explicitly indicated by the third indication information.
  • This third indication information can occupy one bit, and different values of this bit can correspond to different types of the first signal.
  • the third indication information can occupy two bits, and so on, without further listing.
  • the third indication information can carry an index of reference information, which can be information from a set of reference information. For example, an index of 0 indicates that the third indication information is non-reference information, while an index greater than 0 indicates that the third indication information is reference information.
  • the type of the first signal can be determined by the function of the third indication information itself. For instance, if the third indication information is included in the DCI, the DCI can implicitly indicate that the first signal is non-reference information when it is used to schedule the first site or to allocate resources to the first site. That is, the DCI can also implicitly indicate that the first signal is non-reference information when it performs its original function.
  • the first station sends a second signal to the second station according to the feedback type.
  • This second signal is used by the second station to determine the channel information between the first station and the third station.
  • the second station receives the second signal.
  • the second signal is used to determine the channel information between the first and third stations.
  • the feedback type corresponds to the type of the second signal. In other words, the feedback type determines the type of the second signal. Different feedback types contain different information in the second signal.
  • the second signal includes first information, which is channel information determined based on the first signal and the first reference information.
  • the first signal is the information after the first reference information has been transmitted through the channel, i.e., the second reference information.
  • the second signal includes second information, which is information determined based on the first signal, and the second information is different from the first information.
  • the second information is determined based on the first signal, but not based on the first reference information. That is, the first station did not use the first reference information in determining the second information.
  • the first signal is the second reference information.
  • the first signal is not reference information.
  • Figure 2 illustrates an example of a first station sending a second signal to a second station.
  • the first station can also report the second signal to other stations.
  • the first station can send the second signal to station A, which is not the second station.
  • the first information is the channel information obtained by the first station after performing channel estimation based on the first signal and the first reference information.
  • the first information may be channel status information (CSI), channel frequency response (CFR), or channel impulse response (CIR), etc.
  • the first information includes channel information for all subcarriers.
  • the CSI mentioned above includes the CSI of each individual subcarrier in the entire spectrum.
  • the CFR mentioned above includes the CFR of all subcarriers. All subcarriers are all subcarriers on the resources used to transmit the first signal.
  • the first information includes channel information for a portion of the subcarriers.
  • the CSI mentioned above includes the CSI for a portion of the subcarriers.
  • the CFR mentioned above includes the CFR for a portion of the subcarriers.
  • the first station can use either a full feedback mode or a partial feedback mode to feed back the first information.
  • the first information includes channel information for all subcarriers.
  • the first information includes channel information for a portion of the subcarriers.
  • the feedback mode can be determined by the first station, negotiated by the first and second stations, or defined by a standard, etc. This application embodiment does not limit the method of determining the feedback mode.
  • the second signal may further include information indicating the feedback mode, which may include a full feedback mode or a partial feedback mode. Details regarding the feedback mode can be found in the description of the feedback type, and will not be elaborated here.
  • the method of determining the feedback mode can be the same as or different from the method of determining the feedback type; this application embodiment does not limit this.
  • the module used to determine channel information can be called a channel estimation module.
  • the process by which the first station estimates channel information based on the first signal and the first reference information can be called a channel estimation process, and the module that implements this process is called the channel estimation module.
  • the first station may perform at least one of the following processes: cyclic prefix removal (CP), serial-to-parallel conversion, discrete Fourier transform (DFT), channel estimation, equalization, demapping, or parallel-to-serial conversion.
  • CP cyclic prefix removal
  • DFT discrete Fourier transform
  • Figure 3 is a schematic flowchart of the signal processing provided in an embodiment of this application.
  • the signal transmitted by the second station can undergo the following processing: serial-to-parallel conversion, mapping, inverse discrete Fourier transform (IDFT), parallel-to-serial conversion, or addition of CP.
  • the first signal can undergo the following processing: removal of CP, serial-to-parallel conversion, DFT, channel estimation, equalization, demapping, or parallel-to-serial conversion.
  • the first station can obtain the first information through the channel estimation module.
  • the signal processing process shown in Figure 3 is only an example and is not intended to limit the embodiments of this application.
  • the signal transmitted by the second station is... N ⁇ sub> TX ⁇ /sub> represents the number of transmitting antennas.
  • the signal received by the first station is... NRX represents the number of receiving antennas.
  • Hk represents the channel matrix of N RX ⁇ N T0 dimensions
  • each element in the matrix can be called a channel coefficient
  • n is white Gaussian noise
  • CSI can be an estimate of the channel coefficients mentioned above.
  • Hk includes a channel coefficient, which is a complex value corresponding to subcarrier k.
  • the second information is the combined information of the transmitted signal without channel estimation (i.e., the signal transmitted by the third station) and CSI.
  • the second information is the information of the first signal before channel estimation processing.
  • the second information is information determined based on the first signal, but not on the first reference information.
  • the second information is information about the first signal before it is transmitted to the channel estimation module.
  • the information of the first signal after DFT processing is not input to the channel estimation module, and the second information is the output information after DFT.
  • the first signal can be processed as follows: CP removal, serial-to-parallel conversion, and DFT.
  • the second information is information determined based on the first signal, but not on the first reference information.
  • the second information is information determined based on a portion of the first signal, or a portion of the information determined by the first signal. That is, the first station can use either a full feedback mode or a partial feedback mode to feed back the second information.
  • the feedback modes please refer to the above; further details will not be provided here.
  • the feedback type can be determined before the first station sends the second signal.
  • the following describes how the feedback type is determined.
  • the feedback type is defined by the standard. This simplifies implementation and improves efficiency.
  • the standard can define the feedback type as either the first feedback type or the second feedback type.
  • a standard can define the correspondence between feedback types and the type of the first signal. If the first signal is second reference information, then the feedback type can be the first feedback type. Conversely, if the first signal is non-reference information, then the feedback type can be the second feedback type.
  • the standard can define the correspondence between feedback types and resources used to transmit the first signal.
  • the feedback type can be either the second feedback type or the first feedback type.
  • the feedback type can be either the first or the second feedback type.
  • the feedback type can be either the first or the second feedback type. If the resources used to transmit the first signal are the second resource within the first resources, the feedback type can be the second feedback type. If the resources used to transmit the first signal are other resources within the first resources besides the second resource, the feedback type can be either the first or the second feedback type.
  • the feedback type is determined through negotiation between the first and second stations.
  • the first and second stations can exchange feedback types via signaling. This allows for flexible support of different scenario requirements.
  • Figure 4a is a schematic diagram of an interaction flow for a feedback type provided in an embodiment of this application.
  • the second station sends first indication information to the first station.
  • This first indication information is used to indicate the feedback type, or in other words, to determine the feedback type.
  • the first station receives the first indication information.
  • the first station sends response information to the second station.
  • This response information is used to respond to the first indication information.
  • the response information can be used to confirm the first indication information, or it can be used to suggest a feedback type.
  • the second station receives the response information.
  • Figure 4b is a schematic diagram of another interaction flow for the feedback type provided in an embodiment of this application.
  • the first station sends first indication information to the second station.
  • This first indication information is used to indicate the feedback type, or in other words, to determine the feedback type.
  • the second station receives the first indication information.
  • the second station sends response information to the first station.
  • This response information is used to respond to the first indication information.
  • the response information can be used to confirm the first indication information, or it can be used to suggest a feedback type.
  • the first station receives the response information.
  • the first indication information and the response information are contained in a radio frame.
  • the first indication information is contained in a sensing measurement request frame
  • the response information is contained in a sensing measurement response frame.
  • the sensing measurement response frame is used to respond to the sensing measurement request frame.
  • the sensing measurement request frame can be sent by the sensing initiator, and the sensing measurement response frame can be sent by the sensing responder.
  • Figure 5a is a schematic diagram of the format of a sensing measurement request frame provided in an embodiment of this application.
  • the sensing measurement request frame includes at least one of the following: category, public action/protected dual of public action, dialog token, sensing comeback information, measurement session ID indication, and sensing measurement parameter element.
  • the sensing measurement parameter element may include at least one of the following: element ID, length, element ID extension, sensing measurement parameters, and sensing sub-element.
  • the first indication information may be included in the feedback type field of the sensing measurement parameter field.
  • the feedback type field may be located in all or part of the bits B35 to B39 of the sensing measurement parameter field.
  • Figure 5a shows an example with the feedback type field occupying 1 bit, but it is not intended to limit the embodiments of this application.
  • the relationship between the values and meanings of the feedback type field is as follows: 1 represents the first feedback type, and 0 represents the second feedback type.
  • the relationship between the values and meanings shown here is merely an example and is not intended to limit the embodiments of this application.
  • Figure 5b is a schematic diagram of the format of a sensing measurement response frame provided in an embodiment of this application.
  • the sensing measurement response frame includes a status code field.
  • This status code field indicates that in the case of rejection with suggested changes, the sensing measurement response frame may include sensing measurement parameters to suggest that the sensing initiator modify the sensing measurement parameters.
  • the response information may be included in the feedback type field within the sensing measurement parameter field. Further explanation of Figure 5b can be found in Figure 5a, and will not be detailed here.
  • the first instruction information and response information are contained in the higher-level signaling.
  • the first indication information is included in the control information.
  • This control information can be DCI, or it can be link control information sent by the G node, etc.
  • the feedback type is determined by the first site.
  • the first station can determine the feedback type. For instance, after receiving the second indication information, the first station determines the feedback type based on the resources used to transmit the first signal. Alternatively, after receiving the third indication information, the first station determines the feedback type based on the type of the first signal. Or, the first station can determine the feedback type itself.
  • the first station can indicate that feedback type to the second station.
  • the first station can send a first indication message to the second station.
  • a description of the first indication message can be found in Implementation Method 2 above, and will not be detailed here.
  • the first station can carry that feedback type in the second signal. That is, the second signal includes information indicating the feedback type.
  • the second information (or the first information) in the second signal follows the information indicating the feedback type. Therefore, after receiving the second signal, the second station can first determine the feedback type, and then parse the second or first information according to the feedback type.
  • the order of the first information (or the second information) and the information indicating the feedback type in the second signal is not limited in this embodiment.
  • the second station determines the channel information between the first station and the third station based on the second signal.
  • the second signal includes second information and information indicating the type of feedback.
  • the second signal includes first information and information indicating the type of feedback.
  • the information indicating the type of feedback is placed before the first or second information.
  • the second station knows the feedback type before receiving the second signal.
  • the second station can determine the channel information between the first and third stations based on the second signal and the feedback type.
  • the first information received by the second station is the channel information between the first station and the third station.
  • the second information received by the second station is information determined based on the first signal and not based on the first reference information.
  • the second station can perform channel estimation on the second information to parse out the channel information.
  • the second station determines the channel information between the first station and the third station based on the second signal and the signal it receives from the third station.
  • the second station can determine the signal transmitted by the third station before determining the channel information between the first and third stations based on the second signal. For example, the third station can indicate the signal it transmitted to the second station. Alternatively, the third station and the second station can exchange information about the signal transmitted by the third station via signaling.
  • the second signal when the second signal includes second information, after the first station obtains the second information, it can add a cyclic redundancy check (CRC) and/or a preamble. After receiving the second signal, the second station can parse the second information from the preamble in the second signal. If the CRC check of the second information is successful, it indicates that the second information obtained by the second station is correct. Thus, the second station can perform channel estimation based on the second information and the signal sent by the third station to obtain the channel information between the first station and the third station. It is understood that the influence of noise can be ignored in the embodiments of this application. Whether the second information includes noise is not limited.
  • CRC cyclic redundancy check
  • the first station can feed back a second signal based on the first signal, thereby allowing the second station to obtain the channel information between the first and third stations based on the second signal. This improves the overall efficiency of sensing and communication.
  • the first station When the first signal is a signal obtained after non-reference information has been transmitted through the channel, not only is normal communication between the first and third stations guaranteed, but the second station can also obtain the aforementioned channel information. Therefore, the first station can respond with the second signal based on different feedback types, adapting to different application scenarios and further improving the overall efficiency of sensing and communication.
  • the method provided in this application can be divided into four stages: negotiation stage, signal transmission stage, reporting stage (or feedback stage), and resolution stage (or channel information determination stage).
  • the negotiation stage is used to determine at least one of the following: resources for transmitting a first signal, the type of the first signal, or the feedback type.
  • the signal transmission stage is used for the third station to transmit a signal, and for the first station to receive the signal after it has passed through the channel.
  • the reporting stage is used to feed back a second signal.
  • the resolution stage is used to determine the channel information between the first station and the third station.
  • the method provided in this application is illustrated below with specific examples. The examples shown below use the example where the third station and the second station are the same. For schemes where the third station and the second station are different, please refer to the description in Figure 2 and Examples 1 to 6, which will not be detailed below. Details related to Figure 2 above, but not described in detail, can also be found in Examples 1 to 6 below.
  • the first site determines the type of feedback.
  • the second station sends a signal, and the first station receives the first signal.
  • This first signal refers to the signal sent by the second station that arrives at the first station after passing through the channel between the two stations.
  • the first station sends a second signal based on the feedback type.
  • the second signal includes the first information. If the feedback type is the second feedback type, then the second signal includes the second information.
  • the second station After receiving the second signal, the second station determines the channel information between the first station and the second station based on the feedback type.
  • Example 1 For details regarding Example 1, please refer to Figure 2, which will not be elaborated upon here.
  • the first and second stations negotiate to use the signals on the resources occupied by the DCI transmission (i.e., the resources used for DCI transmission) for sensing and measurement.
  • the first and second sites can also negotiate the feedback type.
  • the feedback type could be the second feedback type.
  • the feedback type can also be defined by the standard, such as the second feedback type.
  • the feedback type can also be determined by the first station based on the type of the first signal it receives. If the first station can correctly parse the first signal, such as if the first signal is a DCI sent to the first station by the second station, or if the first signal is reference information, then the first station can determine the feedback type as a first feedback type. If the first station cannot correctly parse the first signal, such as if the first signal is not a DCI sent to the first station by the second station, then the first station can determine the feedback type as a second feedback type. When the feedback type is determined by the first station based on the type of the first signal, the second signal may further include information indicating the feedback type.
  • the second station sends a signal, and the first station receives the first signal.
  • This first signal refers to the signal sent by the second station that arrives at the first station after passing through the channel between the two stations.
  • the first signal can be of the following types:
  • the second station sends a DCI to the first station using the resources occupied by the DCI transmission. That is, the first signal can be a DCI.
  • This DCI can be a DCI sent from the second station to the first station, or it can be a DCI not sent to the first station. Even if it is not a DCI sent to the first station, the first station can still determine the second signal based on the DCI, and the second signal includes the second information.
  • the second station sends a non-DCI signal to the first station using the resources occupied by the DCI transmission. That is, the first signal can be a non-DCI signal.
  • the first station determines the second signal based on the non-DCI signal, and the second signal includes the second information.
  • resources allocated for DCI are periodic. Therefore, within the resources designated for DCI transmission, there may or may not be DCI transmission.
  • the second station can achieve sensing by transmitting non-DCI data on the same resources, thus avoiding resource waste. For example, in scenarios where both the sender and receiver need to intensively acquire channel information, implementing sensing on the resources designated for DCI transmission can improve resource utilization and achieve sensing capabilities, thereby enhancing the overall efficiency of communication and sensing.
  • Example 2 illustrates the control information as DCI.
  • the control information can also be information sent by a G station to one or more T stations in the domain.
  • the first station sends a second signal based on the feedback type.
  • the feedback type is a second feedback type, and the second signal includes second information.
  • the feedback type is a first feedback type, and the second signal includes first information.
  • the second station After receiving the second signal, the second station determines the channel information between the first station and the second station based on the feedback type.
  • Example 2 For details regarding Example 2, please refer to Figure 2, which will not be elaborated upon here.
  • the first and second stations negotiate to use the resources occupied by the broadcast signal for sensing and measurement.
  • the format or content of the broadcast signal can be determined by both the sender and receiver, so the broadcast signal can also be considered as reference information.
  • the first and second sites can also negotiate the feedback type.
  • the feedback type can be either the first feedback type or the second feedback type.
  • the feedback type can also be defined by a standard, such as a second feedback type or a first feedback type.
  • the feedback type can also be determined by the first station based on the type of the first signal it receives.
  • the first signal is a broadcast signal
  • the feedback type can be a first feedback type.
  • the feedback type can be a first feedback type; if that non-broadcast signal is non-reference information, then the feedback type can be a second feedback type.
  • the second signal may also include information indicating the feedback type.
  • the second station sends a signal, and the first station receives the first signal.
  • This first signal refers to the signal sent by the second station that arrives at the first station after passing through the channel between the two stations.
  • the first signal can be of the following types:
  • the second station sends a broadcast signal to the first station using the resources occupied by the broadcast signal. That is, the first signal is a broadcast signal.
  • the second station sends a non-broadcast signal to the first station using the resources occupied by the broadcast signal. That is, the first signal is a non-broadcast signal.
  • This non-broadcast signal can be reference information or non-reference information.
  • the feedback type can be the first feedback type.
  • the feedback type can be the second feedback type.
  • Example 3 For resource descriptions of Example 3, please refer to the description of Example 2; they will not be elaborated upon here.
  • the first station sends a second signal based on the feedback type.
  • the feedback type is a first feedback type
  • the second signal includes the first information.
  • the feedback type is a second feedback type
  • the second signal includes the second information.
  • the second station After receiving the second signal, the second station determines the channel information between the first station and the second station based on the feedback type.
  • Example 3 For details regarding Example 3, please refer to Figure 2, which will not be elaborated upon here.
  • control information such as DCI
  • broadcast signals can be used for sensing measurements, thus eliminating the need to allocate resources separately for sensing.
  • the second station sends a second indication message to the first station, which indicates the resources for transmitting the first signal.
  • the first station receives the second indication message.
  • the second station sends a third indication message to the first station, which indicates whether the first signal is a second reference message or a non-reference message.
  • the first station receives the third indication message.
  • the second station sends a signal, and the first station receives the first signal.
  • This first signal refers to the signal sent by the second station that arrives at the first station after passing through the channel between the two stations.
  • the feedback type is either the first feedback type or the second feedback type. If the first signal is not the reference information, the feedback type is the second feedback type.
  • the first station sends a second signal based on the feedback type.
  • the second station After receiving the second signal, the second station determines the channel information between the first station and the second station based on the feedback type.
  • Example 4 For details regarding Example 4, please refer to Figure 2, which will not be elaborated upon here.
  • the first station and the second station negotiate the resources used for sensing and measurement.
  • the resource used for sensing and measurement is designated as the first resource.
  • the first and second stations need to transmit non-reference information on the first resource (if there is a downlink communication service requirement).
  • This non-reference information can be used for communication and sensing. Therefore, the first and second stations can interact to transmit non-reference information on the resource through signaling (such as second indication information).
  • the resource for transmitting non-reference information can be the second resource.
  • the first site determines the feedback type.
  • the feedback type For details on how to determine the feedback type, please refer to Implementation Methods 1 through 4 above; they will not be elaborated upon here.
  • the second station sends a signal, and the first station receives the first signal.
  • This first signal refers to the signal sent by the second station that arrives at the first station after passing through the channel between the two stations.
  • the first signal can be of the following types:
  • the first signal is the second reference information. For example, if the signal sent by the second station is a known signal to the first station, the first signal is used for sensing.
  • the first signal is non-reference information. If the first signal is not a known signal to the first station, it can be used for both sensing and communication. That is, the second station can occupy the second resource in the first resource, which can be used for both communication and sensing.
  • the first station sends a second signal based on the feedback type.
  • This second signal includes either the first information or the second information.
  • the second signal also includes information indicating the feedback type.
  • the feedback type can be determined by the first station.
  • the feedback type determined by the first station can be a second feedback type.
  • the first station can determine the feedback type based on the type of the first signal.
  • the second station After receiving the second signal, the second station determines the channel information between the first station and the second station based on the feedback type.
  • Example 5 For details regarding Example 5, please refer to Figure 2, which will not be elaborated upon here.
  • This application divides the communication device into functional modules according to the above-described method embodiments. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module.
  • the integrated modules can be implemented in hardware or as software functional modules. It should be noted that the module division in this application is illustrative and represents only one logical functional division; in actual implementation, other division methods may be used.
  • the communication device of this application embodiment will be described in detail below with reference to Figures 6 to 8.
  • FIG. 6 is a schematic diagram of a communication device provided in an embodiment of this application.
  • the communication device includes a processing module 601 and a transceiver module 602.
  • the transceiver module 602 can implement corresponding communication functions, and the processing module 601 is used to implement corresponding processing functions.
  • the transceiver module 602 can also be referred to as an interface, a communication interface, or a communication module, etc.
  • the communication device can be used to perform the actions performed by the first station in the above method embodiments.
  • the first station can be the device itself or a chip or functional module configurable in the device.
  • the transceiver module 602 is used to perform the transceiver-related operations of the first station in the above method embodiments
  • the processing module 601 is used to perform the processing-related operations of the first station in the above method embodiments.
  • transceiver module 602 is used to receive or input a first signal; processing module 601 is used to determine the feedback type; transceiver module 602 is also used to send or output a second signal.
  • the transceiver module 602 is also used to receive or input first instruction information.
  • the transceiver module 602 is also used to receive or input second instruction information.
  • transceiver module 602 is also used to receive or input third instruction information.
  • first signal feedback type
  • second signal first indication information
  • second indication information second indication information
  • third indication information please refer to the above text, which will not be elaborated here.
  • the communication device can be used to perform the actions performed by the second station in the above method embodiments.
  • the second station can be the device itself or a chip or functional module configurable in the device.
  • the transceiver module 602 is used to perform the transceiver-related operations of the second station in the above method embodiments
  • the processing module 601 is used to perform the processing-related operations of the second station in the above method embodiments.
  • the transceiver module 602 is used to receive the second signal; the processing module 601 is used to determine channel information based on the second signal.
  • the transceiver module 602 is also used to send or output first indication information.
  • the transceiver module 602 is also used to send or output second instruction information.
  • the transceiver module 602 is also used to send or output third instruction information.
  • first signal feedback type
  • second signal first indication information
  • second indication information second indication information
  • third indication information please refer to the above text, which will not be elaborated here.
  • the communication device can be used to perform the actions performed by the third station in the above method embodiments.
  • the third station can be the device itself or a chip or functional module configurable in the device.
  • the transceiver module 602 is used to perform the transceiver-related operations of the third station in the above method embodiments
  • the processing module 601 is used to perform the processing-related operations of the third station in the above method embodiments.
  • processing module 601 is used to determine the signal type.
  • transceiver module 602 is used to send the signal.
  • the transceiver module 602 is also used to send or output first indication information.
  • the transceiver module 602 is also used to send or output second instruction information.
  • the transceiver module 602 is also used to send or output third instruction information.
  • first signal feedback type
  • second signal first indication information
  • second indication information second indication information
  • third indication information please refer to the above text, which will not be elaborated here.
  • the transceiver module 602 described above can be an antenna module.
  • the transceiver module 602 can be an input/output module.
  • the communication device may further include a storage module, which can be used to store instructions and/or data.
  • the processing module 601 can read the instructions and/or data from the storage module to enable the communication device to implement the aforementioned method embodiments.
  • transceiver module and processing module shown in the above embodiments are merely examples.
  • functions or execution steps of the transceiver module and processing module please refer to the above method embodiments, which will not be described in detail here.
  • module division in the above-mentioned device is merely a logical functional division.
  • Each function can correspond to a functional module, or two or more functions can be integrated into one functional module.
  • all or some modules can be integrated into one physical entity, or they can be distributed across different physical entities.
  • the above-mentioned functional modules can be implemented in hardware, software, or a combination of both.
  • the functional unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, such as: one or more application-specific integrated circuits (ASICs), or one or more central processing units (CPUs), one or more microcontroller units (MCUs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.
  • ASICs application-specific integrated circuits
  • CPUs central processing units
  • MCUs microcontroller units
  • DSPs digital signal processors
  • FPGAs field-programmable gate arrays
  • the communication device of this application embodiment has been described above.
  • the following description is merely illustrative and does not limit the product form of the communication device of this application embodiment to this.
  • the processing module 601 can be one or more processors, and the transceiver module 602 can be a transceiver, or the transceiver module 602 can also be a transmitting module and a receiving module.
  • the transmitting module can be a transmitter, and the receiving module can be a receiver.
  • the transmitting module and the receiving module are integrated into one device, such as a transceiver.
  • the processor and the transceiver can be coupled, etc., and the connection method of the processor and the transceiver is not limited in the embodiments of this application.
  • the process of sending information in the above method can be the process of the processor outputting the above information.
  • the processor When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After the above information is output by the processor, it may need to undergo other processing before reaching the transceiver.
  • the process of receiving information in the above method can be the process of the processor receiving the input above information.
  • the processor receives the input information
  • the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to undergo other processing before being input into the processor.
  • Figure 7 is a schematic diagram of another structure of the communication device provided in an embodiment of this application.
  • the communication device 70 includes one or more processors 720 and transceivers 710.
  • the communication device can be used to execute the steps, methods, or functions performed by the first station.
  • the processor 720 can be used to execute the functions or steps implemented by the processing module 601 shown in FIG. 6, and the transceiver 710 can be used to execute the functions or steps implemented by the transceiver module 602 shown in FIG. 6.
  • the processor 720 and the transceiver 710 can be found in FIG. 6 or the method embodiments shown above, and will not be elaborated further here.
  • the communication device is used to execute the steps, methods, or functions performed by the second station.
  • the processor 720 can be used to execute the functions or steps implemented by the processing module 601 shown in FIG. 6, and the transceiver 710 can be used to execute the functions or steps implemented by the transceiver module 602 shown in FIG. 6.
  • the processor 720 and the transceiver 710 can be found in FIG. 6 or the method embodiments shown above, and will not be elaborated further here.
  • the communication device is used to execute the steps, methods, or functions performed by the third station.
  • the processor 720 can be used to execute the functions or steps implemented by the processing module 601 shown in FIG. 6, and the transceiver 710 can be used to execute the functions or steps implemented by the transceiver module 602 shown in FIG. 6.
  • the processor 720 and transceiver 710 can be found in FIG. 6 or the method embodiments shown above, and will not be elaborated further here.
  • the transceiver may include a receiver for performing a receiving function (or operation) and a transmitter for performing a transmitting function (or operation).
  • the transceiver is also used to communicate with other devices/appliances via a transmission medium.
  • the communication device 70 may further include one or more memories 730 for storing program instructions and/or data.
  • the memory 730 is coupled to the processor 720.
  • the coupling in this embodiment is an indirect coupling or communication connection between communication devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between the communication devices, units, or modules.
  • the processor 720 may operate in conjunction with the memory 730.
  • the processor 720 may execute program instructions stored in the memory 730.
  • at least one of the above-mentioned memories may be included in the processor.
  • This application embodiment does not limit the specific connection medium between the transceiver 710, processor 720, and memory 730.
  • the memory 730, processor 720, and transceiver 710 are connected via a bus 740, which is represented by a thick line.
  • the connection methods between other components are only illustrative and not intended to be limiting.
  • the bus can be classified as an address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used in Figure 7, but this does not indicate that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application.
  • the general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules within the processor.
  • the memory may include, but is not limited to, non-volatile memory such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM), etc.
  • Memory is any storage medium capable of carrying or storing program code in the form of instructions or data structures, and capable of being read and/or written by a computer (such as the communication device shown in this application), but is not limited to this.
  • the memory in this application embodiment may also be a circuit or any other device capable of implementing storage functions, used to store program instructions and/or data.
  • the processor 720 is primarily used for processing communication protocols and data, controlling the entire communication device, executing software programs, and processing software program data.
  • the memory 730 is primarily used for storing software programs and data.
  • the transceiver 710 may include control circuitry and an antenna.
  • the control circuitry is primarily used for converting baseband signals to radio frequency signals and processing radio frequency signals.
  • the antenna is primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.
  • Input/output devices such as touchscreens, displays, and keyboards, are primarily used for receiving user input data and outputting data to the user.
  • the processor 720 can read the software program in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 720 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit.
  • the RF circuit then performs RF processing on the baseband signal and transmits the RF signal outward in the form of electromagnetic waves through the antenna.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 720.
  • the processor 720 converts the baseband signal back into data and processes the data.
  • the radio frequency circuitry and antenna can be set up independently of the processor performing baseband processing.
  • the radio frequency circuitry and antenna can be arranged remotely, independent of the communication device.
  • the communication device shown in this application embodiment may also have more components than those in Figure 7, and this application embodiment does not limit this.
  • the methods executed by the processor and transceiver shown above are only examples, and the specific steps executed by the processor and transceiver can be referred to the methods described above.
  • the dashed lines in Figure 7 indicate optional parts.
  • the processing module 601 can be one or more logic circuits, and the transceiver module 602 can be an input/output interface, or a communication interface, or an interface circuit, or an interface, etc.
  • the transceiver module 602 can also be a sending module and a receiving module, where the sending module can be an output interface and the receiving module can be an input interface, and the sending module and receiving module are integrated into one module, such as an input/output interface.
  • Figure 8 is a schematic diagram of another structure of the communication device provided in an embodiment of this application.
  • the communication device includes a logic circuit 801 and an interface 802. That is, the processing module 601 can be implemented using the logic circuit 801, and the transceiver module 602 can be implemented using the interface 802.
  • the logic circuit 801 can be a chip, processing circuit, integrated circuit, or system-on-chip (SoC) chip, etc.
  • SoC system-on-chip
  • Figure 8 illustrates the communication device as a chip, which includes the logic circuit 801 and the interface 802.
  • the logic circuit and the interface can also be coupled to each other.
  • the specific connection method of the logic circuit and the interface is not limited in this embodiment.
  • the logic circuit 801 can be used to execute the functions or steps implemented by the processing module 601 shown in FIG. 6, and the interface 802 can be used to execute the functions or steps implemented by the transceiver module 602 shown in FIG. 6.
  • the logic circuit 801 and the interface 802 please refer to FIG. 6 or the method embodiment shown above, which will not be detailed here.
  • the communication device shown in the embodiments of this application can implement the method provided in the embodiments of this application in hardware form, or it can implement the method provided in the embodiments of this application in software form, etc., and the embodiments of this application do not limit it in this way.
  • embodiments of this application also provide a communication system including a first station and a second station, which can be used to perform the methods in any of the foregoing embodiments.
  • the communication system may include a first station, a second station, and a third station.
  • the communication system may include a first station and a third station.
  • This application also provides a computer program for implementing the operations and/or processes performed by various sites in the methods provided in this application.
  • This application also provides a computer-readable storage medium storing computer code that, when executed on a computer, causes the computer to perform the operations and/or processes performed by various communication devices in the methods provided in this application.
  • This application also provides a computer program product comprising computer code or a computer program that, when run on a computer, causes the operations and/or processes performed by various entities in the method provided in this application to be executed.
  • the disclosed systems, communication devices, and methods can be implemented in other ways.
  • the communication device embodiments described above are merely illustrative.
  • the division of modules is only a logical functional division, and in actual implementation, there may be other division methods.
  • multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, communication devices, or modules, or it may be an electrical, mechanical, or other form of connection.
  • the modules described as separate components may or may not be physically separate.
  • the components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of this application.
  • the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.
  • the integrated modules described above can be implemented in hardware or as software functional modules.
  • the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.
  • the aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

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

Abstract

La présente demande se rapporte au domaine technique des communications et concerne en particulier un procédé et un appareil de retour d'informations. La présente demande peut prendre en charge les protocoles IEEE, tels qu'un protocole IEEE 802.11be/Wi-Fi 7/EHT, un protocole IEEE 802.11bn/UHR/Wi-Fi 8, un protocole IEEE 802.15/UWB, un protocole IEEE 802.11bf/détection, un protocole IMMW (onde millimétrique intégrée) ou un protocole NearLink. Dans le procédé, lors de la réception d'un premier signal, une première station envoie un second signal sur la base d'un type de rétroaction, le second signal pouvant comprendre des informations de canal déterminées sur la base du premier signal et des premières informations de référence, ou pouvant comprendre des informations déterminées sur la base du premier signal mais pas sur la base des premières informations de référence. Lors de la réception du second signal, une deuxième station peut déterminer des informations de canal entre la première station et une troisième station sur la base du second signal. Par conséquent, l'efficacité globale de détection et de communication est améliorée.
PCT/CN2025/113234 2024-08-09 2025-08-07 Procédé et appareil de retour d'informations Pending WO2026032373A1 (fr)

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CN202411103661.7 2024-08-09
CN202411103661.7A CN121508588A (zh) 2024-08-09 2024-08-09 信息反馈方法及装置

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Citations (4)

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US20230007532A1 (en) * 2021-07-01 2023-01-05 Samsung Electronics Co., Ltd. Apparatus and method for channel sounding
CN116418460A (zh) * 2021-12-31 2023-07-11 华为技术有限公司 一种信息反馈方法及相关装置
CN117676669A (zh) * 2022-08-24 2024-03-08 维沃移动通信有限公司 传输参数的确定方法及设备
CN118264342A (zh) * 2022-12-28 2024-06-28 华为技术有限公司 天线配对方法及装置

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Publication number Priority date Publication date Assignee Title
US20230007532A1 (en) * 2021-07-01 2023-01-05 Samsung Electronics Co., Ltd. Apparatus and method for channel sounding
CN116418460A (zh) * 2021-12-31 2023-07-11 华为技术有限公司 一种信息反馈方法及相关装置
CN117676669A (zh) * 2022-08-24 2024-03-08 维沃移动通信有限公司 传输参数的确定方法及设备
CN118264342A (zh) * 2022-12-28 2024-06-28 华为技术有限公司 天线配对方法及装置

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