Communication method, apparatus and system

Abstract

A communication method, apparatus and system, which can be applied to the technical field of communications. The present application can be applied to IEEE 802.11 series protocols, such as an 802.11bf protocol or a next-generation Wi-Fi protocol of 802.11ax or a next-generation Wi-Fi protocol of IEEE 802.11be or Wi-Fi AI or integrated millimeter wave (IMM) or ultra-wideband (UWB). For example, an initiation end sends a measurement request frame and receives a measurement response frame. Correspondingly, a response end may receive the measurement request frame and send the measurement response frame. The measurement request frame may comprise a hybrid sounding mode field, which may be used for indicating a measurement mode of a measurement session initiated by the measurement request frame. The hybrid sounding mode field may flexibly indicate the measurement mode.

Description

Communication method, apparatus and system

[0001] The present application claims priority to the Chinese patent application No. 202410452370.2, filed on April 15, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410452370.2 has the title of “Communication method, apparatus and system”, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method, apparatus and system. BACKGROUND

[0003] The institute of electrical and electronics engineers (IEEE) 802.11bf is a new generation of wireless standard focusing on passive object (such as target does not carry any device) sensing. The 802.11bf standard includes two large categories of standards, low frequency (such as below 7 gigahertz (sub7GHz), the implementation mainly relies on 802.11ac, 802.11ax, 802.11be, 802.11bn and next generation standards, etc.) and high frequency (such as greater than or equal to 60GHz, the implementation mainly relies on 802.11ad, 802.11ay and next generation standards, etc.).

[0004] In the 802.11bf standard, the sensing device can estimate the parameters (such as speed, distance, angle, etc.) of the sensing target based on the signals it receives, and the estimation results can be used for subsequent action / behavior recognition, etc. In the existing scheme, due to the large difference in bandwidth between high frequency and low frequency, the sensing process of high frequency and the sensing process of low frequency are independent, that is, each has an independent and complete sensing process.

[0005] However, the sensing performance of the above scheme needs to be improved. SUMMARY

[0006] The embodiments of the present application provide a communication method, apparatus and system, which can improve the flexibility of the sensing process and improve the sensing performance.

[0007] In a first aspect, the embodiments of the present application provide a communication method, which is applied to an initiating end, and the method comprises:

[0008] The initiating end sends a measurement request frame, the measurement request frame is used to initiate a measurement session, the measurement request frame comprises a hybrid probe mode field, the hybrid probe mode field is used to indicate the measurement mode of the measurement session; and the measurement response frame corresponding to the measurement request frame is received.

[0009] In the embodiments of this application, when the above communication method is applied to the sensing communication method, the initiator can be referred to as a sensing initiator; when the above communication method is applied to the ranging communication method, the initiator can be referred to as a ranging initiator. Similarly, when the above communication method is applied to different methods, the names of the measurement request frame or the measurement session can be all different. For example, when the above communication method is applied to the sensing communication method, the above measurement request frame can be referred to as a sensing measurement request frame, and the measurement session can be referred to as a sensing measurement session. When the above communication method is applied to the ranging communication method, the above measurement request frame can be referred to as a ranging measurement request frame or an initial fine timing measurement request (IFTMR) frame, and the measurement session can be referred to as a ranging measurement session or a fine timing measurement session (FTM session).

[0010] In the embodiments of this application, the measurement mode can indicate whether the frames involved in the measurement session are transmitted at a high frequency or at a low frequency. Alternatively, the measurement mode can indicate which frames in the measurement session are transmitted at a high frequency and which frames are transmitted at a low frequency. Alternatively, the measurement mode can indicate the transmission frequency band of the frames involved in the measurement interaction of the measurement session. The transmission frequency band can include a first frequency band or a second frequency band.

[0011] In the embodiments of this application, the measurement request frame can flexibly indicate the measurement mode of the measurement session by including the mixed probe mode field, so that the responder can clearly and effectively know the measurement mode of the measurement session initiated by the initiator, thereby improving the sensing performance.

[0012] In a second aspect, the embodiments of this application provide a communication method, which is applied to a responder, and the method comprises:

[0013] The responder receives a measurement request frame, the measurement request frame is used to initiate a measurement session, the measurement request frame includes a mixed probe mode field, the mixed probe mode field is used to indicate the measurement mode of the measurement session; and the responder sends a measurement response frame in response to the measurement request frame.

[0014] The description of the second aspect can be referred to the first aspect to the first aspect, and will not be described in detail here.

[0015] In a possible implementation manner of the first aspect or the second aspect, when the value of the mixed sounding mode field is a first value, the first value indicates that the PPDUs in the polling phase of the measurement session, the NDPA frames in the NDPA sounding phase of the measurement session, and the PPDUs in the reporting phase of the measurement session are transmitted in the first frequency band; or the first value indicates that the sensing PPDUs or the ranging PPDUs in the NDPA sounding phase of the measurement session and the PPDUs in the TF sounding phase of the measurement session are transmitted in the second frequency band.

[0016] In a possible implementation manner of the first aspect or the second aspect, when the value of the mixed sounding mode field is a second value, the second value indicates that the PPDUs in the polling phase of the measurement session and the NDPA frames in the NDPA sounding phase of the measurement session are transmitted in the first frequency band; or the second value indicates that the sensing PPDUs or the ranging PPDUs in the NDPA sounding phase of the measurement session, the PPDUs in the TF sounding phase of the measurement session, and the PPDUs in the reporting phase of the measurement session are transmitted in the second frequency band.

[0017] In a possible implementation manner of the first aspect or the second aspect, when the value of the mixed sounding mode field is a third value, the third value indicates that the PPDUs in the polling phase of the measurement session are transmitted in the first frequency band; or the third value indicates that the PPDUs in the NDPA sounding phase of the measurement session, the PPDUs in the TF sounding phase of the measurement session, and the PPDUs in the reporting phase of the measurement session are transmitted in the second frequency band.

[0018] In a possible implementation manner of the first aspect or the second aspect, when the value of the mixed sounding mode field is a fourth value, the fourth value indicates that the PPDUs in each phase of the measurement session are transmitted in the second frequency band.

[0019] In a possible implementation manner of the first aspect or the second aspect, when the value of the mixed sounding mode field is a fifth value, the fifth value indicates that the PPDUs in the polling phase of the measurement session, the NDPA frames in the NDPA sounding phase of the measurement session, the sounding trigger frames in the TF sounding phase of the measurement session, and the PPDUs in the reporting phase of the measurement session are transmitted in the first frequency band; or the fifth value indicates that the sensing PPDUs (or the ranging PPDUs) in the NDPA sounding phase of the measurement session and the sensing PPDUs (or the ranging PPDUs) in the TF sounding phase of the measurement session are transmitted in the second frequency band.

[0020] In a possible implementation manner of the first aspect or the second aspect, the measurement request frame further comprises one or more link identifier fields, and the link identifier fields are used to indicate one link corresponding to the measurement session.

[0021] In a possible implementation manner of the first aspect or the second aspect, the plurality of link identifier fields are used to indicate a plurality of links corresponding to the measurement session.

[0022] For example, the plurality of links can be links used to transmit the first frame in the sensing measurement session, and the first frame is a frame involved in the measurement session. For example, part of the plurality of links can be used to transmit the first frame at a low frequency, or part of the plurality of links can be used to transmit the first frame at a high frequency.

[0023] In a possible implementation manner of the first aspect or the second aspect, the first frame comprises at least one of the following: a measurement request frame, a measurement response frame, a polling frame, a CTS-to-self frame, an NDPA frame, a first PPDU, a probe trigger frame, a second PPDU, a report trigger frame, and a report frame.

[0024] In a possible implementation manner of the first aspect or the second aspect, the measurement request frame further comprises one or more channel identifier fields, and the channel identifier fields are used to indicate one channel corresponding to the measurement session.

[0025] In a possible implementation manner of the first aspect or the second aspect, the measurement request frame further comprises one or more frequency band identifier fields, and the frequency band identifier fields are used to indicate one frequency band corresponding to the measurement session.

[0026] In a possible implementation manner of the first aspect or the second aspect, the measurement request frame further comprises a sending beam list or a receiving beam list, the sending beam list is used to indicate an index of a sending beam used by a responding end in the measurement session or an index of a sending beam used by an initiating end in the measurement session, and the receiving beam list is used to indicate an index of a receiving beam used by the responding end in the measurement session or an index of a receiving beam used by the initiating end in the measurement session.

[0027] In the embodiments of the present application, the sending beam can be a beam used by the responding end or the initiating end to transmit a sensing PPDU or a ranging PPDU in the measurement session, and the receiving beam can be a beam used by the responding end or the initiating end to receive the sensing PPDU or the ranging PPDU in the measurement session.

[0028] In a possible implementation of the first aspect or the second aspect, the measurement response frame includes a hybrid sounding mode field, and the hybrid sounding mode field is used to indicate a measurement mode supported by the response end.

[0029] Whether the value of the hybrid sounding mode field in the measurement request frame is the same as the value of the hybrid sounding mode field in the measurement response frame is not limited in the embodiments of the present application.

[0030] In a possible implementation of the first aspect, the method further includes: sending, by the initiator end, a sensing NDPA frame.

[0031] In a possible implementation of the second aspect, the method further includes: receiving, by the response end, a sensing NDPA frame.

[0032] In a possible implementation of the first aspect or the second aspect, the sensing NDPA frame includes a beam indication field, and the beam indication field is used to indicate an index of a sending beam or an index of a receiving beam, the sending beam being a beam used by the initiator end to send a sensing PPDU, the receiving beam being a beam used by the initiator end to receive the sensing PPDU, and the sensing PPDU being a PPDU used for sensing.

[0033] For example, the beam indication field in the sensing NDPA frame can be used to indicate an index of a sending beam used by the sensing initiator end or an index of a receiving beam used by the sensing response end in an NDPA sounding stage corresponding to the sensing NDPA frame (i.e., an NDPA sounding stage related to the sensing NDPA frame). In the NDPA sounding stage, the sensing initiator end can act as a sensing sending end, and the sensing response end can act as a sensing receiving end.

[0034] In the embodiments of the present application, the sensing NDPA frame can also indicate the index of the sending beam and the index of the receiving beam at the same time. The initiator end can make the response end know the index of a sending beam used by the response end based on the sending beam and / or the receiving beam by indicating, for the response end, the index of the sending beam used by the initiator end and / or the index of the receiving beam used by the response end.

[0035] In a possible implementation of the first aspect or the second aspect, the sensing NDPA frame includes a switching field, and the switching field is used to indicate whether the initiator end performs frequency band switching after sending the sensing NDPA frame.

[0036] With reference to the first aspect or the second aspect, in a possible implementation manner, the sensing NDPA frame comprises a count field, and the count field is used to indicate a number of sensing NDPA frames to be sent by the initiating end (or referred to as a number of sensing NDPA frames to be further sent, or a number of sensing NDPA frames to be subsequently sent).

[0037] With reference to the first aspect or the second aspect, in a possible implementation manner, the sensing NDPA frame comprises a total number field and a sequence field, the total number field is used to indicate a total number of sensing NDPA frames sent by the initiating end in a measurement interaction corresponding to the sensing NDPA frame in the measurement session, and the sequence field is used to indicate a sequence of the sensing NDPA frame in the total number.

[0038] With reference to the first aspect, in a possible implementation manner, the method further comprises: the initiating end sending a probe trigger frame.

[0039] With reference to the second aspect, in a possible implementation manner, the method further comprises: the responding end receiving a probe trigger frame.

[0040] With reference to the first aspect or the second aspect, in a possible implementation manner, the probe trigger frame comprises a beam indication field, and the beam indication field is used to indicate an index of a sending beam, the sending beam being a beam used for the responding end to send a sensing PPDU, the sensing PPDU being a PPDU used for sensing.

[0041] In the embodiments of the present application, the beam indication field in the probe trigger frame can be used to indicate an index of a sending beam used by the sensing responding end in a TF probe stage corresponding to the probe trigger frame. In the TF probe stage, the sensing responding end can act as a sensing sending end, and the sensing initiating end can act as a sensing receiving end. The beam indication field can also be used to indicate an index of a receiving beam used by the sensing initiating end in the TF probe stage corresponding to the probe trigger frame. Thus, the sensing responding end can determine the index of the sending beam used by the sensing responding end based on the index of the receiving beam of the sensing initiating end.

[0042] In the third aspect, the embodiments of the present application provide an initiating end for performing the method in the first aspect or any possible implementation manner. The sensing initiating end comprises a module for performing the method in the first aspect or any possible implementation manner.

[0043] In the fourth aspect, the embodiments of the present application provide a responding end for performing the method in the second aspect or any possible implementation manner. The sensing initiating end comprises a module for performing the method in the second aspect or any possible implementation manner.

[0044] In a fifth aspect, an embodiment of the present application provides an initiator, the initiator comprising a processor configured to perform the method in the first aspect or any possible implementation of the first aspect. The processor is configured to execute a program stored in the memory, and when the program is executed, the method in the first aspect or any possible implementation of the first aspect is performed.

[0045] In a possible implementation, the memory is located outside the initiator.

[0046] In a possible implementation, the memory is located inside the initiator.

[0047] In the embodiments of the present application, the processor and the memory can also be integrated into one device, that is, the processor and the memory can also be integrated together.

[0048] In a possible implementation, the initiator further comprises a transceiver configured to receive information or send information.

[0049] In a sixth aspect, an embodiment of the present application provides a responder, the responder comprising a processor configured to perform the method in the second aspect or any possible implementation of the second aspect. The processor is configured to execute a program stored in the memory, and when the program is executed, the method in the second aspect or any possible implementation of the second aspect is performed.

[0050] In a possible implementation, the memory is located outside the responder.

[0051] In a possible implementation, the memory is located inside the responder.

[0052] In the embodiments of the present application, the processor and the memory can also be integrated into one device, that is, the processor and the memory can also be integrated together.

[0053] In a possible implementation, the responder further comprises a transceiver configured to receive information or send information.

[0054] In a seventh aspect, an embodiment of the present application provides an initiator, the initiator comprising a logic circuit and an interface, the logic circuit and the interface being coupled; the interface is configured to input and / or output information, and the logic circuit is configured to perform the method in the first aspect or any possible implementation of the first aspect.

[0055] In an eighth aspect, an embodiment of the present application provides a responder, the responder comprising a logic circuit and an interface, the logic circuit and the interface being coupled; the interface is configured to input and / or output information, and the logic circuit is configured to perform the method in the second aspect or any possible implementation of the second aspect.

[0056] In a ninth aspect, an embodiment of the present application provides a computer readable storage medium for storing a computer program which, when executed on a computer, causes the method shown in any one of the first aspect to the second aspect or any possible implementation manner thereof to be performed.

[0057] In a tenth aspect, an embodiment of the present application provides a computer program product which, when executed on a computer, causes the method shown in any one of the first aspect to the second aspect or any possible implementation manner thereof to be performed.

[0058] In an eleventh aspect, an embodiment of the present application provides a computer program which, when executed on a computer, causes the method shown in any one of the first aspect to the second aspect or any possible implementation manner thereof to be performed.

[0059] In a twelfth aspect, an embodiment of the present application provides a communication system comprising an initiating end and a responding end, wherein the initiating end is configured to perform the method shown in the first aspect or any possible implementation manner of the first aspect, and the responding end is configured to perform the method shown in the second aspect or any possible implementation manner of the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0060] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application;

[0061] FIGS. 2a-2d are schematic diagrams of formats of a sensing PPDU according to an embodiment of the present application;

[0062] FIG. 3 is a schematic diagram of stages of a sensing procedure according to an embodiment of the present application;

[0063] FIG. 4 is a schematic diagram of a flow of a TB sensing measurement interaction according to an embodiment of the present application;

[0064] FIG. 5 is a schematic diagram of a flow of a non-TB sensing measurement interaction according to an embodiment of the present application;

[0065] FIG. 6a is a schematic diagram of a SBP procedure according to an embodiment of the present application;

[0066] FIG. 6b is a schematic diagram of a flow of a non-TB ranging measurement interaction according to an embodiment of the present application

[0067] FIG. 7 is a schematic diagram of a format of an IMMW sensing capability element according to an embodiment of the present application;

[0068] FIG. 8 is a schematic diagram of a format of an IMMW sensing measurement parameter element in a sensing measurement request frame according to an embodiment of the present application;

[0069] FIG. 9a is a format diagram of a sensing NDPA frame according to an embodiment of the present application;

[0070] FIG. 9b is another format diagram of a sensing NDPA frame according to an embodiment of the present application;

[0071] FIG. 9c is a format diagram of a ranging NDPA frame according to an embodiment of the present application;

[0072] FIG. 10 is a format diagram of a trigger-related common information field in a probe trigger frame according to an embodiment of the present application;

[0073] FIG. 11 is a format diagram of a probe trigger frame according to an embodiment of the present application;

[0074] FIG. 12 is a format diagram of a sensing NDPA frame according to an embodiment of the present application;

[0075] FIG. 13 is a structure diagram of a communication apparatus according to an embodiment of the present application;

[0076] FIG. 14 is another structure diagram of a communication apparatus according to an embodiment of the present application;

[0077] FIG. 15 is yet another structure diagram of a communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0078] For the purpose of understanding the technical solutions of the present application, the present application will be further described below with reference to the drawings.

[0079] The terms "first" and "second" and the like in the description, claims, and drawings of the present application merely mean different objects and do not imply a particular order. Furthermore, the terms "include" and "have" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, a method, a system, a product, or an apparatus, or the like, including a series of steps or units are not limited to the listed steps or units, but can optionally further include steps or units not listed or other steps or units inherent to such processes, methods, products, or apparatuses.

[0080] The "embodiments" mentioned herein mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0081] In the present application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three and three or more, and "and / or" is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. "Or" means that there can be two relationships, such as only A exists, 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 A and B exist at the same time. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items. For example, at least one 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".

[0082] In the present application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0083] In the present application, the information indicated by the indication information is referred to as the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the pre-agreed (for example, the protocol stipulates) arrangement order of each information, thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately in multiple sub-information, and the sending period and / or sending time of these sub-information can be the same or different.

[0084] In the present application, "transmission" includes sending or receiving.

[0085] In the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information is XX, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information is YY, which can include direct receiving from YY through the air interface, and also includes indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be 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 a device through a bus, wire or interface.

[0086] The following describes the communication system related to the present application.

[0087] The technical solutions provided in the embodiments of the present application can be applied to a wireless local area network (WLAN) system, such as Wi-Fi or ambient power (AMP). The method provided in the embodiments of the present application can be applicable to IEEE 802.11 series protocols, for example, 802.11a / b / g protocols, 802.11bf protocols, 802.11az protocols, 802.11bk protocols, 802.11n protocols, 802.11ac protocols, 802.11ax protocols, 802.11be protocols, 802.11bn protocols, or next-generation protocols, and the like. For example, 802.11ad protocols, 802.11ay or next-generation protocols, and the like, which are not listed one by one. The technical solutions provided in the embodiments of the present application can also be applied to a wireless personal area network (WPAN) based on ultra wideband (UWB) technology. The technical solutions provided in the embodiments of the present application can also be applied to millimeter wave (MMW) technology, including integrated MMW (IMMW). The method provided in the embodiments of the present application can be applicable to IEEE 802.15 series protocols, for example, 802.15.4a protocols, 802.15.4z protocols, or 802.15.4ab protocols, or future generations of UWB WPAN protocols, and the like, which are not listed one by one. The technical solutions provided in the embodiments of the present application can also be applied to a communication system, for example, can be an internet of things (IoT) system, a vehicle to X (V2X) system, a narrow band IoT (NB-IoT) system, a long term evolution (LTE) system, a 5th-generation (5G) communication system, and a new communication system that appears in future communication development, and the like.

[0088] The WLAN system can provide high-rate and low-latency transmission. As the WLAN application scenarios evolve, the WLAN system will be applied to more scenarios or industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, enterprise offices, stadiums, exhibition halls, concert halls, hotel rooms, dormitories, wards, classrooms, supermarkets, squares, streets, production workshops, and warehouses. Of course, the devices (such as access points or stations) that support WLAN communication or sensing can be sensor nodes in smart cities (such as smart water meters, smart electricity meters, and smart air detection nodes), smart devices in smart homes (such as smart cameras, projectors, display screens, televisions, sound systems, refrigerators, washing machines, and the like), nodes in the Internet of Things, entertainment terminals (such as augmented reality (AR) and virtual reality (VR) wearable devices), smart devices in smart offices (such as printers, projectors, amplifiers, sound systems, and the like), Internet of Vehicles devices in the Internet of Vehicles, infrastructure in daily life scenarios (such as vending machines, self-service navigation stations in supermarkets, self-service checkout devices, and self-service ordering machines), and devices in large sports and music venues.

[0089] Although the embodiments of the present application mainly take WLAN as an example, especially the network applying to the IEEE 802.11 series standards. The various aspects of the embodiments of the present application can be extended to other networks using various standards or protocols. For example, Bluetooth, high performance radio LAN (HIPERLAN) (a wireless standard similar to the IEEE 802.11 standard, mainly used in Europe) and wide area network (WAN) or other now known or later developed networks.

[0090] In a possible implementation, the method provided by the embodiments of the present application can be implemented by a communication device in a communication system. For example, the communication device can be an access point (AP) or a station (STA).

[0091] The access point is a device with wireless communication function, which supports communication or sensing using WLAN protocol, has the function of communicating or sensing with other devices (such as non-AP STA or other access points) in the WLAN network, and of course, can also have the function of communicating or sensing with other devices. Alternatively, the access point is equivalent to a bridge connecting wired and wireless networks, and its main function is to connect various wireless network clients together and then access the wireless network to the Ethernet. In the WLAN system, the access point can be referred to as an access point station (AP STA). The device with wireless communication function can be a whole device, or a chip, processing system or functional module installed in the whole device, and the device installed with the chip or processing system or functional module can realize the method and function of the embodiments of the present application under the control of the chip or processing system or functional module. The AP in the embodiments of the present application is a device providing services for non-AP STA, which can support 802.11 series protocol or subsequent protocol, etc. For example, the access point can be an access point for terminals (such as mobile phones) to enter wired (or wireless) networks, which is mainly deployed in homes, buildings and parks, and the typical coverage radius is dozens of meters to hundreds of meters, and of course, it can also be deployed outdoors. For another example, the AP can be a communication server, a router, a switch, a network bridge and other communication entities; the AP can include various forms of macro base stations, micro base stations, relay stations, etc. Of course, the AP can also be a chip or processing system or module in the above various forms of devices, so as to realize the method and function of the embodiments of the present application. Of course, the AP can also include an AP belonging to a multi-link device (MLD), or a co-sited AP, etc.

[0092] The STA is a device with wireless communication function, which supports communication or sensing using WLAN protocol, and has the ability to communicate or sense with other non-AP STAs or access points in the WLAN network. In the WLAN system, the station can be referred to as a non-access point station (non-AP STA). For example, the STA is any user communication device that allows a user to communicate or sense with an AP and then communicate with a WLAN. The device with wireless communication function can be a whole device, or a chip or processing system or functional module installed in the whole device. The device installed with the chip or processing system or functional module can realize the method and function of the embodiments of the present application under the control of the chip or processing system or functional module. For example, the STA can be a wireless communication chip, a wireless sensor or a wireless communication terminal, and can also be referred to as a user. For another example, the STA can be a mobile phone supporting Wi-Fi communication function, a tablet computer supporting Wi-Fi communication function, a set-top box supporting Wi-Fi communication function, a smart television supporting Wi-Fi communication function, a smart wearable device supporting Wi-Fi communication function, a vehicle-mounted communication device supporting Wi-Fi communication function, and a computer supporting Wi-Fi communication function, etc. Of course, the STA can also be a chip or processing system or module in the above various forms of devices, thereby realizing the method and function of the embodiments of the present application. Of course, the STA can also include a non-AP STA or a co-located STA belonging to a multi-link device (MLD), etc.

[0093] For example, the embodiments of the present application can be applied to the scenarios of communication or sensing between AP and STA, between AP and AP, or between STA and STA in WLAN, which are not limited by the embodiments of the present application. Optionally, the AP can communicate or sense with a single STA, or the AP can simultaneously communicate or sense with multiple STAs. Specifically, the communication or sensing between the AP and the multiple STAs can be divided into downlink transmission in which the AP sends signals to multiple STAs simultaneously, and uplink transmission in which multiple STAs send signals to the AP. The communication or sensing between the AP and the STA, between the AP and the AP, and between the STA and the STA can support WLAN communication protocol, which can include IEEE 802.11 series of protocols, such as 802.11n / 802.11ac / 802.11ax / 802.11be / 802.11bn protocols, and of course also applies to protocols after 802.11bn.

[0094] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present application. The communication system can include one or more APs and one or more STAs. In FIG. 1, one access point, e.g., AP1, and three stations, e.g., STA1, STA2 and STA3, are shown. For example, the method provided by the embodiments of the present application can be applied to data communication between one AP and one or more STAs (e.g., communication between AP1 and STA1, or communication between AP1 and STA1 and STA2, as shown in FIG. 1), or communication between APs (e.g., communication between AP1 and AP2, as shown in FIG. 1), or communication between STAs (e.g., communication between STA2 and STA3, as shown in FIG. 1). The method provided by the embodiments of the present application can be applied to, but not limited to, single-user uplink / downlink transmission, multi-user uplink / downlink transmission, vehicle-to-everything (V2X, X can represent any thing), device-to-device (D2D). For example, the V2X can include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P) or vehicle-to-network (V2N) communication, etc.

[0095] It can be understood that the STA is a mobile phone and the AP is a router in FIG. 1 as an example, which does not limit the types of AP and STA in the embodiments of the present application. Meanwhile, FIG. 1 only shows one AP and three STAs as an example, but the number of APs or STAs can be more or less, which is not limited in the embodiments of the present application.

[0096] The method provided by the present application is described below.

[0097] The perception procedure of low frequency is similar to that of high frequency. Generally, the bandwidth of high frequency is much larger than that of low frequency, and the perception procedure of high frequency is independent of that of low frequency, that is, each has an independent and complete perception procedure. For high frequency, the bandwidth is large, for example, the bandwidth of a channel can be 2.16 GHz (only an example), and a large bandwidth can provide better perception performance, such as better distance resolution, higher accuracy, etc. In the standard of high frequency, the transmission bandwidth of PPDU (or signal, or OFDM symbol, etc.) can be greater than or equal to 320 MHz. However, due to the large attenuation, high frequency generally adopts directional transmission or reception of signals, which is easily affected by shielding or beam misalignment, etc., which will affect the signaling interaction between high frequencies for perception measurement interaction. When the signaling interaction in the perception measurement interaction is affected, the perception measurement interaction cannot be performed, and the measurement cannot be completed. Unlike high frequency, the bandwidth of low frequency is relatively small (for example, the maximum bandwidth of PPDU in the 802.11be protocol can be 320 MHz), and the perception performance is relatively limited. However, low frequency generally adopts omnidirectional transmission, and the possibility of being shielded is small, so various frames in the perception measurement interaction can be effectively transmitted. The related description of perception herein also applies to ranging, and the ranging will not be described here.

[0098] Considering that future devices can have both high frequency and low frequency communication or perception capabilities, etc., the present application provides a perception communication method, a ranging communication method, an apparatus and a system.

[0099] In the present application, low frequency can assist high frequency to complete perception measurement or ranging, or high frequency and low frequency cooperate to complete perception measurement or ranging, and the cooperation between high frequency and low frequency can be more close, so that the respective advantages of high and low frequencies can be effectively utilized, and the completion of perception measurement or ranging interaction can be better supported, and the perception performance or ranging performance can be improved. For example, the present application can improve the robustness of the perception procedure or the ranging procedure, and can fully utilize the large bandwidth advantage of high frequency to improve the accuracy of perception or ranging. In the scenario of cooperation between high frequency and low frequency, the present application designs signaling interaction in the mixed mode of high and low frequencies.

[0100] For example, the mixed mode of high and low frequencies can be as follows:

[0101] In at least one stage of the perception measurement interaction procedure (or the ranging measurement interaction procedure): the control frame is transmitted by low frequency, and the perception PPDU is transmitted by high frequency.

[0102] Alternatively, in at least one stage of the perception measurement interaction procedure (or the ranging measurement interaction procedure): the control frame and the perception PPDU are both transmitted by high frequency.

[0103] Alternatively, in at least one stage of the sensing measurement interaction procedure (or the ranging measurement interaction procedure): some control frames are transmitted over the low frequency, and some control frames are transmitted over the high frequency. For example, the sensing PPDU can be transmitted over the high frequency.

[0104] The above description of the control frames and the sensing PPDUs also applies to the SBP procedure, e.g., in at least one stage of the SBP procedure: the control frames are transmitted over the low frequency, and the sensing PPDUs are transmitted over the high frequency; or, the control frames and the sensing PPDUs are both transmitted over the high frequency, etc., which are not listed one by one here.

[0105] Generally, in different stages, at least one of the format or the content of the control frames can be different. The above description of the control frames and the sensing PPDUs also applies to the ranging communication method, which is not listed one by one hereinafter.

[0106] The "transmission" shown in the present application can include sending or receiving. For example, the transmission of the control frames over the low frequency can include that the sending end of the control frames transmits the control frames over the low frequency, or the receiving end of the control frames receives the control frames over the low frequency. For example, the transmission of the sensing PPDUs over the high frequency can include that the sensing sending end transmits the sensing PPDUs over the high frequency, or the sensing receiving end receives the sensing PPDUs over the high frequency. The description of the transmission is not listed one by one here.

[0107] For the sensing communication method, the aforementioned control frames can include but are not limited to a sensing poll trigger frame (or a sensing poll frame), a sensing NDPA frame, a sensing SR2SI probe trigger frame, a sensing report trigger frame, a clear to send (CTS) to self frame, or a report frame. The sensing PPDUs corresponding to the sensing NDPA frame can include a first PPDU, and the sensing PPDUs corresponding to the sensing SR2SI probe trigger frame can include a second PPDU. With the development of standards, other types of control frames for sensing can also appear in the future, which are not limited in the present application.

[0108] For the ranging communication method, the aforementioned control frames can include but are not limited to a ranging poll trigger frame (or a ranging poll frame), a ranging NDPA frame, a probe ranging trigger frame, etc. The description of the control frames or the ranging PPDUs involved in the ranging communication method is not listed one by one here.

[0109] The above description of the high-low frequency mixed mode can be combined with the sensing measurement interaction shown in FIG. 4 and FIG. 5, the SBP procedure shown in FIG. 6a, and the ranging communication method shown below. The specific procedure of the high-low frequency mixed mode is not listed one by one here.

[0110] The following describes the names involved in the present application.

[0111] 1. High frequency and low frequency

[0112] In this application, high frequency and low frequency are relative. For example, the frequency of low frequency can be lower than a first threshold, such as lower than 7 GHz (sub-7 GHz), or the frequency of low frequency can include 2.4 GHz-7.25 GHz (also can be called sub-7 GHz). The frequency of high frequency can be higher than a second threshold, such as higher than 42 GHz, or the frequency of high frequency can include 42 GHz-71 GHz. The second threshold can be greater than the first threshold. The specific value of the first threshold and the second threshold is not limited in this application. Of course, with the development of standards, other frequencies of high frequency and low frequency can appear in the future, which are not limited in this application.

[0113] In this application, the second frequency band corresponds to high frequency (HF), or the frequency of high frequency shown below is the same as the frequency of the second frequency band, that is, the second frequency band can be replaced by high frequency. The first frequency band can correspond to low frequency (LF), or the frequency of low frequency shown below can be the same as the frequency of the first frequency band, that is, the first frequency band can be replaced by low frequency.

[0114] 2. Sensing PPDU and ranging PPDU

[0115] For the sensing communication method, the PPDU for sensing (i.e., sensing PPDU) in the NDPA probe stage can include SI2SR NDP, etc., and the PPDU for sensing in the TF probe stage can include SR2SI NDP or SR2SR NDP, etc.

[0116] For the ranging communication method, the PPDU for ranging (i.e., ranging PPDU) in the NDPA probe stage can include R2I NDP, etc., and the PPDU for ranging in the TF probe stage can include I2R NDP, etc.

[0117] The above-mentioned sensing PPDU or ranging PPDU is only an example, such as the sensing PPDU or ranging PPDU can also include a data field, such as the length of the data field can be less than a length threshold. The specific value of the length threshold is not limited in this application.

[0118] FIG. 2a-2d are format diagrams of the sensing PPDU according to embodiments of the present disclosure. FIG. 2a-2d exemplarily show format diagrams of the sensing PPDU. The sensing PPDUs shown in FIG. 2a-2d can also be applied to the ranging communication method, i.e., the PPDUs shown in FIG. 2a-2b can also be ranging PPDUs. The sensing PPDU shown in FIG. 2a is exemplarily shown in the high efficiency (HE) ranging NDP, the sensing PPDU shown in FIG. 2b is exemplarily shown in the HE based-trigger (TB) ranging NDP, the sensing PPDU shown in FIG. 2c is exemplarily shown in the extremely high throughtput (EHT) ranging NDP, and the sensing PPDU shown in FIG. 2d is exemplarily shown in the EHT TB ranging NDP. The μs per EHT-LTF shown in FIG. 2c can include 8 μs per EHT-LTF symbol using 2x EHT-LTF (8 us per EHT LTF symbol using 2x EHT-LTF). The explanations of the fields shown in FIG. 2a-2d can refer to the related standards or protocols, which will not be described in detail here: legacy short training field (L-STF), legacy long training field (L-LTF), legacy signal (L-SIG) field, repeated L-SIG (RL-SIG) field, high efficiency signal field A (HE-SIG), high efficiency short training field (HE-LTF), universal SIG (U-SIG) field, extremely high throughtput short training field (EHT-STF), EHT-SIG field, or packet extension (PE). The explanations about the sensing PPDU here are also applicable to the ranging PPDU.

[0119] The sensing PPDUs (or ranging PPDUs) shown in FIGs. 2a-2d are merely examples, and other formats of sensing PPDUs (or ranging PPDUs) can be introduced in the future as the standard evolves, which are not limited by embodiments of the present application. The sensing PPDUs (or ranging PPDUs) transmitted on the high frequency can or can not have the same format as the sensing PPDUs (or ranging PPDUs) transmitted on the low frequency, which are not limited by embodiments of the present application. The lengths of the fields in the NDPs shown in FIGs. 2a-2d are merely examples, and should not be construed as limiting embodiments of the present application.

[0120] The sensing communication method and apparatus shown in the present application are described in detail below.

[0121] Sensing initiator: an apparatus that initiates a sensing behavior; or an apparatus that initiates a sensing measurement session; or an apparatus that transmits a sensing measurement request frame. The sensing initiator can transmit the sensing measurement request frame on the low frequency, or on the high frequency. The sensing initiator can be a sensing transmitter or a sensing receiver.

[0122] Sensing responder: an apparatus that participates in sensing in response to a sensing behavior initiated by a sensing initiator. The sensing responder can receive a sensing measurement request frame and reply with a sensing measurement response frame. The sensing responder can reply with the sensing measurement response frame on the low frequency, or on the high frequency. As an example for a trigger-based (TB) sensing measurement interaction, the sensing initiator can be an AP and the sensing responder can be a STA. As another example for a non-TB sensing measurement interaction, the sensing initiator can be a STA and the sensing responder can be an AP. The sensing responder can be a sensing transmitter or a sensing receiver.

[0123] Sensing transmitter: an apparatus that transmits a sensing PPDU. The sensing transmitter can transmit the sensing PPDU on the low frequency, or on the high frequency.

[0124] Sensing receiver: an apparatus that receives a sensing PPDU. The sensing receiver can receive the sensing PPDU on the low frequency, or on the high frequency.

[0125] FIG. 3 is a schematic diagram of stages of a sensing procedure according to an embodiment of the present application. As shown in FIG. 3, the stages of the sensing procedure can include a sensing capabilities exchange stage, a sensing measurement session establishment stage, a sensing measurement exchange stage, and a sensing measurement session termination stage.

[0126] A capabilities exchange between devices can be performed between different devices, as shown in the sensing capabilities exchange stage of FIG. 3. Through the exchange of basic capabilities, the devices can learn about each other's sensing capabilities. For example, a sensing initiator can send a sensing capabilities element to a sensing responder, which can carry the sensing capabilities of the sensing initiator. The sensing responder can send a sensing capabilities element to the sensing initiator, which can carry the sensing capabilities of the sensing responder. Generally, in the sensing capabilities exchange stage, the devices that exchange capabilities are not yet distinguished as sensing initiators or sensing responders. The sensing initiator or sensing responder can be distinguished after the capabilities exchange is completed, i.e., the device that sends a sensing measurement request frame can be the sensing initiator.

[0127] After the sensing devices complete the capabilities exchange, when a sensing measurement session needs to be initiated, the sensing initiator can initiate the establishment of the sensing measurement session by sending a sensing measurement request frame, and the sensing responder receives the sensing measurement request and replies with a sensing measurement response frame. Through the sensing measurement session establishment stage, the sensing initiator can assign different roles and parameters to different sensing responders for different sensing tasks, and complete the establishment of the sensing measurement session. In the sensing measurement session establishment stage, the relevant parameters in sensing are mainly negotiated, such as the receiving / transmitting role of the device, the sensing bandwidth, whether feedback of channel state information (CSI) is needed, whether a sensing measurement report frame needs to be fed back, etc.

[0128] After the establishment of the sensing measurement session, the sensing initiator can initiate one or more sensing measurement instances. That is, one or more sensing measurement instances can be included in the sensing measurement session. The sensing measurement instance can be classified as a trigger based (TB) sensing measurement instance and a non-trigger based (non-TB) sensing measurement instance. The TB sensing measurement instance is generally initiated by the AP (e.g., the AP as the sensing initiator), and the non-TB sensing measurement instance is generally initiated by the STA (e.g., the STA as the sensing initiator).

[0129] After a period of time, if the sensing initiator or the sensing responder does not need the sensing measurement session, the sensing initiator or the sensing responder can close (or terminate) the sensing measurement session by sending a sensing measurement session termination frame, as shown in the sensing measurement session termination stage of FIG. 3.

[0130] The sensing procedure shown in FIG. 3 can correspond to different sensing tasks. For example, the sensing initiator can initiate the sensing procedure for a fall detection task, and in the sensing measurement instance stage, the sensing initiator (or the sensing responder) can detect information of the target by sending a plurality of sensing PPDUs. For another example, the sensing initiator can initiate the sensing procedure for a breathing detection task, and in the sensing measurement instance stage, the sensing initiator (or the sensing responder) can also detect information of the target by sending a plurality of sensing PPDUs. The information of the target listed herein can include motion information of the target, etc. The target detected by the sensing procedure can be in a motion state or in a stationary state, which is not limited in the embodiments of the present application.

[0131] The sensing procedure shown in FIG. 3 can also be applicable to a ranging procedure. For example, the ranging initiator and the ranging responder can exchange their respective capabilities in the ranging capability exchange stage, and then assign roles and parameters for different sensing responders in the ranging measurement session stage to complete the establishment of the ranging measurement session. After the ranging measurement session, the ranging initiator can initiate one or more ranging measurement instances. The description of the ranging procedure can be referred to the sensing procedure, and the present application does not repeat it.

[0132] The sensing measurement instance procedure in the sensing measurement session is described in detail below.

[0133] Fig. 4 is a flow diagram of a TB sensing measurement interaction according to an embodiment of the present application. As shown in Fig. 4, a TB sensing measurement interaction can include at least one of the following four stages: a polling stage, an NDPA sounding stage, a trigger frame (TF) sounding stage, or a reporting stage. For example, a TB sensing measurement interaction includes one stage, which can be the TF sounding stage. For another example, a TB sensing measurement interaction can include the NDPA sounding stage and the TF sounding stage. For another example, a TB sensing measurement interaction can include the polling stage and the TF sounding stage. For another example, a TB sensing measurement interaction can include the polling stage, the NDPA sounding stage, and the reporting stage. For another example, a TB sensing measurement interaction can include the TF sounding stage and the reporting stage. For another example, a TB sensing measurement interaction can include the NDPA sounding stage and the reporting stage. For another example, a TB sensing measurement interaction can include the polling stage, the NDPA sounding stage, the TF sounding stage, and the reporting stage (as shown in Fig. 4), and the like, which will not be listed one by one herein. The description of the stages herein is applicable to each method provided below, which will not be described herein again. Although the polling stage, the NDPA sounding stage, the TF sounding stage, and the reporting stage are shown simultaneously below, it should not be construed as a limitation of the present application. Each stage will be described in detail below:

[0134] (1) Polling stage

[0135] In the TB sensing measurement interaction, the AP as the sensing initiator can send a sensing poll trigger frame to the STAs that want to be invited to participate in the sensing measurement interaction in the polling stage, to invite each STA to participate in the sensing measurement interaction. The STA participating in the sensing measurement interaction can reply a CTS-to-self frame on the resource allocated by the AP, to confirm participation in the sensing measurement interaction. That is, the sensing poll trigger frame can be used for the sensing initiator to inquire one or more sensing responders whether to participate in the sensing measurement interaction. The CTS-to-self frame can be used to confirm participation in the sensing measurement interaction. As shown in Fig. 4, the AP can invite STA1 to STA6 to participate in the sensing measurement interaction process. STA1, STA2, STA4, and STA5 confirm participation in the sensing measurement interaction.

[0136] When the number of sensing responders is large and the sensing initiator cannot implement polling with all the sensing responders at one time, the sensing initiator can initiate multiple polling. For example, when the number of sensing responders is greater than the number of resource units (RUs) that the sensing initiator can allocate (only an example), the sensing initiator can initiate multiple polling.

[0137] In embodiments of the present application, the name of the sensing polling trigger frame is only an example, and the sensing polling trigger frame can also be referred to as a sensing polling frame or a polling trigger frame or a polling frame (or simply a poll), and the present application does not make any limitation. For the sake of brevity, the following will be described by taking the polling frame as an example.

[0138] (2) NDPA detection phase

[0139] In the NDPA detection phase, the sensing initiator sends a sensing NDPA frame to one or more sensing responders that confirm to participate in the NDPA detection, and sends an SI2SR NDP after a predetermined interval duration (for example, a short inter frame space (SIFS)). The sensing responder receives the SI2SR NDP according to the information in the sensing NDPA frame to implement sensing measurement. That is, the sensing NDPA frame can be used to schedule one or more sensing responders participating in the NDPA detection phase. The SI2SR NDP is one of sensing PPDUs, and the SI2SR NDP can be used for sensing to implement sensing measurement from the sensing initiator to the sensing responder. The SI2SR NDP can be any one of the following types: a sensing NDP, a ranging NDP, an IMMW sensing NDP, an IMMW ranging NDP, or a data PPDU. The specific format of the SI2SR NDP is not limited in the present application.

[0140] The specific duration of the predetermined interval duration is not limited in embodiments of the present application, and the SIFS is only an example. In embodiments of the present application, the name of the sensing NDAP frame is only an example, and the sensing NDPA frame can also be referred to as an NDPA frame (or simply an NDPA), and the present application does not make any limitation. For the sake of brevity, the following will be described by taking the NDPA frame as an example.

[0141] (3) TF detection phase

[0142] In the TF detection phase, the sensing initiator sends a sensing SR2SI detection trigger frame to one or more sensing responders that confirm to participate in the TF detection, and the sensing responder sends an SR2SI NDP according to the information allocated by the SR2SI detection trigger frame to implement sensing measurement. That is, the sensing SR2SI detection trigger frame can be used to allocate measurement resources for the sensing responder. After receiving the sensing SR2SI detection trigger frame, the sensing responder can send the SR2SI NDP according to the allocated measurement resources. The measurement resources can include, but are not limited to, spatial streams or space-time streams, etc.

[0143] In case of a large number of sensing response ends, e.g., the number of sensing response ends is greater than a number threshold, the sensing initiation end can initiate multiple TF sounding stages. Exemplarily, the number threshold can be determined by the maximum number of spatial streams that can be scheduled by the sensing initiation end. That is, in case of a large number of sensing response ends, the sensing initiation end can not be able to complete the sensing measurement through one TF sounding stage, and thus the sensing initiation end can initiate multiple TF sounding stages.

[0144] In embodiments of the present application, the name of the sensing SR2SI sounding trigger frame is only an example, and the sensing SR2SI sounding trigger frame can also be referred to as a sounding trigger frame (or simply a sounding trigger) or a sensing sounding trigger frame, and the like, which is not limited in the embodiments of the present application. For the sake of brevity, the sounding trigger frame is taken as an example in the following description.

[0145] (4) Reporting stage

[0146] In the reporting stage, the sensing initiation end sends a sensing report trigger frame to one or more sensing response ends that confirm to participate in the reporting stage, and the sensing response end sends a sensing measurement report frame according to the sensing report trigger frame. That is, the sensing report trigger frame can be used to allocate resources for the sensing response end, and the sensing response end can send the sensing measurement report frame according to the allocated resources, and the sensing measurement report frame can be used to report the sensing measurement result.

[0147] In embodiments of the present application, the name of the sensing report trigger frame is only an example, and the sensing report trigger frame can also be referred to as a report trigger frame (or simply a report trigger), and the like, which is not limited in the present application. The sensing measurement report frame can also be referred to as a report frame (or simply a report), and the like, which is not limited in the present application. For the sake of brevity, the report trigger frame and the report frame are taken as examples in the following description.

[0148] In embodiments of the present application, different stages of one TB measurement interaction can occur within one sensing availability window. For example, when one TB measurement interaction includes the above four stages, the above polling stage, NDPA sounding stage, TF sounding stage and reporting stage can occur within one sensing availability window. Exemplarily, one sensing availability window can include multiple transmission opportunities (TXOPs), and one TXOP can include one or more sensing measurement interactions.

[0149] The roles of STA1 to STA2 in FIG. 4 can be the sensing transmitter, and the roles of STA4 to STA6 can be the sensing receiver. When the AP transmits the sensing poll trigger frame to STA1 to STA5, STA3 does not reply the CTS-to-self frame, and thus STA3 does not participate in the sensing procedure. The sensing poll trigger frame is optional, and STA6 can skip the polling phase. The negotiation between the AP and STA4 can not feed back the sensing measurement result, and thus in FIG. 4, although STA4 completes the sensing measurement based on the SI2SR NDP received by it, in the reporting phase, STA4 can not report the sensing measurement result through the sensing measurement report frame, but report the sensing measurement result through the upper layer, for example. The sensing measurement result can include the CSI or the channel impulse response (CIR), and the like.

[0150] As the standard evolves, the specific procedure of the TB sensing measurement interaction can change, and thus the procedure of the TB sensing measurement interaction shown in FIG. 4 is only an example, and should not be understood as a limitation to the embodiments of the present application. When the procedure of the TB sensing measurement interaction changes, the various examples shown below can also change.

[0151] Whether the frames involved in the various stages are transmitted in the low frequency or the high frequency is not limited in the embodiments of the present application. For example, reference can be made to the description of the control frame and the sensing PPDU above.

[0152] FIG. 5 is a flow diagram of the procedure of the non-TB sensing measurement interaction according to an embodiment of the present application. As shown in FIG. 5, the procedure of the non-TB sensing measurement interaction can be as follows:

[0153] In the non-TB sensing measurement interaction, the STA as the sensing initiator can transmit the sensing NDPA frame, and transmit the SI2SR NDP after a predetermined interval (for example, SIFS). The AP as the sensing responder transmits the SR2SI NDP after SIFS, and performs the reporting phase after SIFS. The AP includes the sensing measurement result measured by it in the sensing measurement report frame, and thus reports it to the sensing initiator.

[0154] For example, the sensing measurement result reported by the AP can be the sensing measurement result obtained based on the SI2SR NDP, for example, including the CSI from the STA to the AP. The AP transmits the SR2SI NDP, and after the STA receives the SR2SI NDP, the STA can obtain the sensing measurement result based on the SR2SI NDP, for example, including the CSI from the AP to the STA.

[0155] In the non-TB sensing measurement interaction, the STA can flexibly indicate the sensing measurement information from the STA to the AP or the sensing measurement information from the AP to the STA through the sensing of the NDPA frame.

[0156] When the sensing measurement from the STA to the AP is not performed, the SI2SR NDP can be a predetermined NDP, and in this case, the AP can not send the sensing measurement report frame. When the sensing measurement from the AP to the STA is not performed, the SR2SI NDP can be a predetermined NDP. The predetermined NDP can be such that the space-time stream number (NSTS) (or the number of spatial streams (NSS)) in the NDP is less than or equal to a threshold. The specific value of the threshold is not limited in the embodiments of the present application. The predetermined NDP can be unidirectional transmission, for example, the AP or the STA can not perform multi-directional scanning, but transmit the NDP in one direction. Alternatively, the predetermined NDP can satisfy at least one of the following: the SR2SI repetition (SR2SI rep) field in the NDP is set to 0, and the SI2SR NSTS (or SI2SR NSS) field in the NDP is set to 0. Alternatively, the predetermined NDP can satisfy at least one of the following: the SR2SI repetition (SR2SI rep) field in the NDP is set to 0, and the SI2SR NSTS (or SI2SR NSS) field in the NDP is set to 0.

[0157] In the embodiments of the present application, different stages of one non-TB sensing measurement interaction can occur within one sensing available window. The sensing available window is described with reference to FIG. 4, and will not be described in detail herein.

[0158] Whether the frames involved in the above non-TB sensing measurement interaction are transmitted in low frequency or high frequency is not limited in the embodiments of the present application. For example, the above description of the control frame and the sensing PPDU can be referred to.

[0159] The following describes some other devices in the sensing communication method according to the embodiments of the present application.

[0160] Sensing by proxy (SBP) initiator: a device that initiates the SBP process, or a device that initiates the SBP request (SBP request) frame. Generally, the SBP initiator can be a STA. For example, the SBP initiator can send the SBP request frame in low frequency, or send the SBP request frame in high frequency.

[0161] SBP response end: an apparatus responding to the SBP procedure, or an apparatus receiving the SBP request frame and replying the SBP response frame. Generally, the SBP response end can be an AP. The SBP response end can send the SBP response frame at low frequency, or send the SBP response frame at high frequency. The SBP response end can initiate the sensing measurement request frame as a sensing initiator.

[0162] Fig. 6a is a schematic diagram of the SBP procedure according to an embodiment of the present application. As shown in Fig. 6a, STA1 sends the SBP request frame to the AP as an SBP initiator. The AP, as an SBP response end, after receiving the SBP request frame (referred to as SBP request in Fig. 6a for short), establishes sensing with the corresponding sensing response end according to the parameters carried in the SBP request frame, completes the measurement and feeds back. After receiving the SBP request frame, the AP replies the SBP response frame (referred to as SBP response in Fig. 6a for short), which can initiate the sensing measurement session as a sensing initiator, such as sending the sensing measurement request frame to STA1 and STA2 respectively. The sensing measurement interaction initiated by the above-mentioned AP as a sensing initiator is generally TB sensing measurement interaction. The description of the TB sensing measurement interaction can be referred to the above-mentioned Fig. 4, which will not be described in detail here.

[0163] In Fig. 6a, STA1 initiates the SBP request as an SBP initiator, and can participate in the sensing measurement session as a sensing response end. However, in a specific implementation, STA1 can initiate the SBP request as an SBP initiator, but does not participate in the sensing measurement session initiated by the SBP response end (i.e. STA1 can not be a sensing response end).

[0164] Exemplarily, the SBP procedure can further include a feedback stage (not shown in Fig. 6a) and a closing stage (not shown in Fig. 6a). For example, in the feedback stage of the SBP (not shown in Fig. 6a), the AP as an SBP response end can collect the SBP sensing measurement results, and then report the SBP sensing measurement report to the SBP initiator (such as STA1) through the SBP report frame. Alternatively, the SBP response end can not send the SBP report frame, but report the SBP sensing measurement report through the upper layer. In the closing stage of the SBP (not shown in Fig. 6a), the SBP initiator can close the established SBP procedure. The closing stage shown in the embodiments of the present application can also be referred to as a termination stage, etc. The specific name of each stage is not limited in the present application.

[0165] The sensing measurement request sent by the AP to STA1 or STA2 shown in Fig. 6a is only an example, and should not be understood as a limitation of the embodiments of the present application. The order between the SBP response and the sensing measurement request in Fig. 6a is not limited in the embodiments of the present application. The description of the sensing measurement request and the sensing measurement response in Fig. 6a can be referred to the above, which will not be described in detail here.

[0166] Whether the frames involved in the above SBP procedure are transmitted at low frequency or at high frequency is not limited by embodiments of the present application. Reference can be made to the above description of control frames and sensing PPDUs.

[0167] The ranging communication method and apparatus shown in the present application are described in detail below.

[0168] Ranging initiator: an apparatus that initiates a ranging behavior; or, an apparatus that initiates a fine timing measurement session (FTM session); or, an apparatus that sends an initial fine timing measurement request (IFTMR) frame. The ranging initiator can send the IFTMR frame at low frequency or at high frequency. The fine timing measurement session can also be referred to as a ranging measurement session, and the IFTMR frame can also be referred to as a ranging measurement request frame, etc. The ranging initiator can be a ranging transmitter or a ranging receiver.

[0169] Ranging responder: an apparatus that responds to a ranging behavior initiated by a ranging initiator and participates in ranging. For example, the ranging responder can receive an IFTMR frame and reply with an initial fine timing measurement (IFTM) frame. The ranging responder can reply with the IFTM frame at low frequency or at high frequency. For example, for a triggered FTM (TB FTM) interaction (or TB ranging measurement interaction), the ranging initiator can be a STA and the ranging responder can be an AP. For example, for a non-triggered FTM (non-TB FTM) interaction (or non-TB ranging measurement interaction), the ranging initiator can be a STA and the ranging responder can be an AP. The specific product form of the initiator or responder for a TB FTM session or a non-TB FTM session is not limited by embodiments of the present application. The ranging responder can be a ranging transmitter or a ranging receiver.

[0170] Ranging transmitter: an apparatus that transmits a ranging PPDU. The ranging transmitter can transmit the ranging PPDU at low frequency or at high frequency.

[0171] Ranging receiver: an apparatus that receives a ranging PPDU. The ranging receiver can receive the ranging PPDU at low frequency or at high frequency.

[0172] The ranging PPDU shown in the embodiments of the present application is a PPDU for ranging, and the format of the PPDU can be referred to the foregoing FIG. 2a-2d, etc. The embodiments of the present application do not limit the specific format of the ranging PPDU. The format of the ranging PPDU can be the same as that of the sensing PPDU, or there can be some differences in the contents of some fields, which are not limited by the embodiments of the present application.

[0173] For example, one ranging measurement interaction can include at least one of the following four stages: a polling stage, a TF sounding stage, an NDPA sounding stage, or a reporting stage. The type of the control frame in each stage of the ranging measurement interaction can be ranging, and the type of the control frame in each stage of the sensing measurement interaction can be sensing. Whether other information except the type is the same is not limited by the embodiments of the present application. The description of the ranging measurement interaction can refer to the description of the sensing measurement interaction, which will not be listed one by one here.

[0174] The description of the TB ranging measurement interaction can refer to the foregoing TB sensing measurement interaction, and the process of the non-TB ranging measurement interaction can refer to the foregoing non-TB ranging measurement interaction or FIG. 6b, etc., which will not be described in detail here.

[0175] The frame format or element format related by the embodiments of the present application is described in detail as follows.

[0176] The name, length, position, etc. of each frame or element or field shown below are not limited by the embodiments of the present application. The following is illustrated by taking elements or fields as examples, and the fields, subfields, elements, or subelements are not specifically distinguished, which should not be understood as a limitation on the embodiments of the present application. The frame format or element format shown in each stage below can be a separate embodiment, or the frame format or element format shown in different stages can be combined with each other.

[0177] For the capability interaction stage:

[0178] For the sensing communication method, the capability element can include capability indication information, which can be used to indicate whether the transmitting end of the capability element supports at least one of: high-frequency sensing capability or high-low frequency mixed sensing capability. The high-frequency sensing capability can indicate the capability of IMMW sensing. The sensing initiator and the sensing responder both transmit control frames and sensing PPDUs on high frequencies, i.e., both the sensing initiator and the sensing responder support high-frequency sensing capability. The high-low frequency mixed sensing capability can indicate the sensing capability of high-frequency and low-frequency cooperation. For IMMW, the capability indication information can be used to indicate whether the transmitting end of the capability element supports the capability of IMMW sensing, or the capability indication information can be used to indicate whether the transmitting end of the capability element supports sub-7GHz and IMMW mixed sensing, etc. The specific description of the capability indication information is not listed here.

[0179] For the ranging communication method, the capability element can include capability indication information, which can be used to indicate whether the transmitting end of the capability element supports at least one of: high-frequency ranging capability or high-low frequency mixed ranging capability. The description of the capability indication information or the capability element in the ranging communication method can refer to the description in the sensing communication method, which is not described here in detail.

[0180] The following describes the capability element taking the sensing communication method as an example. The description of the capability element in the sensing communication method below also applies to the ranging communication method, and the capability element in the ranging communication method is not described here in detail.

[0181] For example, the capability element can be carried in the following frames: beacon, probe request, probe response, association request, association response, reassociation request, and reassociation response. That is, in the capability interaction stage, the devices can interact the sensing capability through the above-mentioned frames. Of course, the above-mentioned frames are only examples and should not be understood as a limitation on the embodiments of the present application.

[0182] The above-mentioned capability element can be an extended capability element or a sensing capability element (or a ranging capability element), and the embodiments of the present application do not limit this.

[0183] The following illustrates the capability indication information.

[0184] As an example, the capability indication information can be carried in B106 in the capability element.

[0185] As another example, the capability indication information can be carried in B107 in the capability element.

[0186] As yet another example, the capability indication information can include B106 and B107.

[0187] The above B106 and B107 are only examples, and the capability indication information can be located in reserved bits in any possible frame (such as a frame already existing in the current protocol or a frame to be generated in the future) or in bits not effectively utilized. Tables 1 and 2 exemplarily show the capability indication information. The description of the values and meanings of the various fields shown below is only an example, and embodiments of the present application are not limited thereto.

[0188] Tables 1 and 2 are exemplarily shown with the capability indication information being located in B106 or B107, and in a specific implementation, the location of the capability indication information can be different for different devices. The AP shown in Table 1 is connected with an AP having IMMW sensing capability, which can be understood as that the AP and the AP having IMMW sensing capability are collocated devices.

[0189] Table 1

[0190] Table 2

[0191] The B106 or B107 shown in Table 1 or Table 2 is only an example, and embodiments of the present application are not limited to the field name or the field order carried by the capability indication information.

[0192] Exemplarily, the capability indication information or the capability information can be included in the capability element, the description of the capability indication information can be referred to the above description, and the capability information can be used to indicate the supported capability of the device. The description of the capability information can also be referred to the IMMW sensing capability element shown below. That is, the IMMW sensing capability element can carry the supported capability of the device. That is, the specific capability corresponding to the above capability indication information can include one or more capabilities shown in the IMMW sensing capability element.

[0193] The following is described by taking the sensing communication method as an example. When the above capability element is applicable to the ranging communication method, the name or function of the related field can be changed, and for the capability element involved in the ranging communication method, the following will not be described in detail.

[0194] The embodiment of the present application also designs an IMMW sensing capability element, which can be used to carry the IMMW sensing capability of a device. The IMMW sensing capability element can carry the capability of the device sending the IMMW sensing capability element. The device sending the IMMW sensing capability element can also be referred to as the present device.

[0195] For example, the structure of the IMMW sensing capability element is shown in FIG. 7. The IMMW sensing capability element can occupy one or at least two bytes.

[0196] FIG. 7 is a format diagram of the IMMW sensing capability element provided by the embodiment of the present application. As shown in FIG. 7, the IMMW sensing capability element can include at least one of the following: element ID, length, element ID extension, or IMMW sensing capabilities.

[0197] The element ID field and the element ID extension field can be used to identify the IMMW sensing capability element. The length field can be used to indicate the length of the IMMW sensing capability element.

[0198] The IMMW sensing capabilities field can be used to carry at least one of the following information: spatial stream (SS) related information, space-time stream (STS) related information, long training field (LTF) related information, or other related information. The number of bytes occupied by the IMMW sensing capabilities field is not limited by the embodiment of the present application. When the sum of the number of bits occupied by each field shown below is not an integer number of bytes, the IMMW sensing capabilities field can include reserved bits.

[0199] Exemplarily, the SS related information can comprise at least one of: max transmit SS = 320 MHz (max TX SS = 320 MHz), max transmit SS = 640 MHz (max TX SS = 640 MHz), max receive SS = 320 MHz (max RX SS = 320 MHz), or max receive SS = 640 MHz (max RX SS = 640 MHz). The STS related information can comprise at least one of: max transmit space-time stream = 320 MHz (max TX STS = 320 MHz), max transmit STS = 640 MHz (max TX STS = 640 MHz), max receive STS = 320 MHz (max RX STS = 320 MHz), or max receive STS = 640 MHz (max RX STS = 640 MHz). The 320 MHz and 640 MHz shown here are only examples, and larger bandwidths can be supported in the future as the standard evolves, which are not limited here.

[0200] Exemplarily, the LTF related information can comprise at least one of: max transmit integrated millimeter-wave-length training field repetition (max TX IMMW-LTF repetition), max receive integrated millimeter-wave-length training field repetition (max RX IMMW-LTF repetition), max transmit integrated millimeter-wave-length training field total (max TX IMMW-LTF total), or max receive integrated millimeter-wave-length training field total (max RX IMMW-LTF total).

[0201] For example, the other relevant information can include at least one of: responder needed, bandwidth (BW), device class, full bandwidth uplink multiple-in multiple-out (full BW UL MIMO), max supported sessions, min measurement interval, poll required, Ng, max RX antennas, max RX chains, IMMW coordinated monostatic, IMMW bistatic, IMMW coordinated bistatic, IMMW multistatic, IMMW SBP, polarization sensing support, maximum number of TX directions, maximum number of RX directions, maximum number of TX beams, or maximum number of RX beams.

[0202] For example, the content indicated by each of the above fields can be as follows:

[0203] Responder needed field: can be used to indicate whether a responder is needed. When the field is 1, it means that a responder is needed. When the field is 0, it means that a responder is not needed.

[0204] BW field: can be used to indicate a bandwidth, such as the bandwidth of a sensing PPDU.

[0205] Max TX STS = 320 MHz field: can be used to indicate the maximum number of transmit space-time streams when the bandwidth is 320 MHz.

[0206] Max TX STS = 640 MHz field: can be used to indicate the maximum number of transmit space-time streams when the bandwidth is 640 MHz.

[0207] Max RX STS = 320MHz field: can be used to indicate the maximum number of receive space-time streams when the bandwidth is 320MHz.

[0208] Max RX STS = 640MHz field: can be used to indicate the maximum number of receive space-time streams when the bandwidth is 640MHz.

[0209] Max TX SS = 320MHz field: can be used to indicate the maximum number of transmit spatial streams when the bandwidth is 320MHz.

[0210] Max TX SS = 640MHz field: can be used to indicate the maximum number of transmit spatial streams when the bandwidth is 640MHz.

[0211] Max RX SS = 320MHz field: can be used to indicate the maximum number of receive spatial streams when the bandwidth is 320MHz.

[0212] Max RX SS = 640MHz field: can be used to indicate the maximum number of receive spatial streams when the bandwidth is 640MHz.

[0213] Max TX IMMW-LTF repetition field: can be used to indicate the maximum number of transmission repetitions of IMMW-LTF.

[0214] Max RX IMMW-LTF repetition field: can be used to indicate the maximum number of reception repetitions of IMMW-LTF.

[0215] Max TX IMMW-LTF total field: can be used to indicate the maximum total number of IMMW-LTF (counting both repetitions and stream number).

[0216] Max RX IMMW-LTF total field: can be used to indicate the maximum total number of IMMW-LTF (counting both repetitions and stream number).

[0217] Device type field: can be used to indicate the type of the device.

[0218] Full bandwidth UL-MIMO field: can be used to indicate whether the device supports full bandwidth UL-MIMO.

[0219] Max supported sessions field: can be used to indicate the maximum number of sessions supported by the device.

[0220] Min measurement interval field: can be used to indicate the minimum measurement interval.

[0221] Poll required field: can be used to indicate whether the device needs to be polled.

[0222] Ng: subcarrier grouping setting. The Ng field can also be referred to as I Ng The field can indicate the way of subcarrier aggregation (or subcarrier smoothing).

[0223] Maximum receive antennas field: can be used to indicate the maximum number of receive antennas.

[0224] Maximum receive link field: can be used to indicate the maximum number of receive links.

[0225] IMMW cooperative spontaneous self-reception field: can be used to indicate whether the device supports the sensing of IMMW cooperative spontaneous self-reception.

[0226] IMMW transceiver separation field: can be used to indicate whether the device supports the sensing of IMMW transceiver separation.

[0227] IMMW cooperative transceiver separation field: can be used to indicate whether the device supports the sensing of cooperative transceiver separation.

[0228] IMMW multi-station sensing field: can be used to indicate whether the device supports multi-station sensing.

[0229] IMMW proxy sensing field: can be used to indicate whether the device supports the sensing of IMMW SBP.

[0230] Polarization sensing support field: can be used to indicate whether the device supports polarization sensing.

[0231] Maximum number of transmit directions (or beams) field: can be used to indicate the maximum number of supported transmit directions (or beams).

[0232] Maximum number of receive directions (or beams) field: can be used to indicate the maximum number of supported receive directions (or beams). The meanings of the above-mentioned fields can also refer to the descriptions of the existing standards, and the embodiments of the present application are not limited.

[0233] For the establishment phase of the sensing measurement session or the establishment phase of the ranging measurement session:

[0234] The measurement request frame can include at least one of the following fields: hybrid sounding mode, link ID, channel ID, frequency point ID (or frequency band ID), transmit beam list, receive beam list, time information or period information. The measurement request frame shown here can be a sensing measurement request frame or a ranging measurement request frame.

[0235] The above fields can be carried in one element in the measurement request frame. Alternatively, part of the above fields are carried in one element (e.g., element #1) in the measurement request frame, and another part of the above fields are carried in another element (e.g., element #2) in the measurement request frame, and the like, which are not listed one by one here. Whether the above fields are carried in the same element in the measurement request frame is not limited by the embodiments of the present application. The element names carried by the above fields are also not limited by the embodiments of the present application. The above fields can exist in the form of fields, or in the form of elements, or in the form of subfields or subelements, and the like, which are not limited. The above fields are introduced as follows respectively:

[0236] (1) Hybrid sounding mode field

[0237] The hybrid sounding mode field is used to indicate the measurement mode of the measurement session. That is, the hybrid sounding mode field can be used to indicate the measurement mode of the current measurement session. The measurement session can be a perception measurement session initiated by the perception measurement request frame, or a ranging measurement session initiated by the ranging measurement request frame.

[0238] Alternatively, the hybrid sounding mode field can be used to indicate a hybrid measurement mode. The hybrid shown here can be the hybrid of high frequency and low frequency, or the hybrid of sub-7GHz and millimeter wave, and the like. For example, the measurement mode can indicate whether the frames involved in the measurement session are transmitted at high frequency or at low frequency. Alternatively, the measurement mode can indicate which frames in the measurement session are transmitted at high frequency and which frames are transmitted at low frequency. The measurement mode shown in the embodiments of the present application can also be referred to as a transmission mode, and the like, and the specific name of the measurement mode is not limited by the embodiments of the present application.

[0239] As a possible implementation, the measurement request frame can not include the mixed probing mode field. The flow of the TB measurement interaction can be defined by the protocol, such as the default setting: the sensing PPDUs (SI2SR NDP and SR2SI NDP as shown above) in the TB sensing measurement interaction are transmitted on the high frequency, and other frames in the TB sensing measurement interaction except the sensing PPDUs are transmitted on the low frequency; or, the SI2SR NDP, the probe trigger frame, and the SR2SI NDP in the TB sensing measurement interaction are all transmitted on the high frequency, and other frames are transmitted on the low frequency; or, the sensing NDPA frame, the SI2SR NDP, the probe trigger frame, and the SR2SI NDP in the TB sensing measurement interaction are all transmitted on the high frequency, and other frames are transmitted on the low frequency; or, the sensing NDPA frame, the SI2SR NDP, the probe trigger frame, the SR2SI NDP, the report trigger frame, and the report frame in the TB sensing measurement interaction are all transmitted on the high frequency, and the polling frame and the CTS-to-self frame are transmitted on the low frequency. As another example, the flow of the non-TB measurement interaction can also be defined by the protocol, and for the specific measurement mode, it is not listed one by one here.

[0240] As another possible implementation, the measurement request frame can indicate the measurement mode by whether the mixed probing mode field is included. As for the sensing measurement session, when the mixed probing mode field is not included in the sensing measurement request frame, the flow of the TB sensing measurement interaction in the sensing measurement session can be as shown in FIG. 4 above, and the flow of the non-TB sensing measurement interaction in the sensing measurement session can be as shown in FIG. 5 above. As another example, when the mixed probing mode field is included in the sensing measurement request frame, the flow of the TB sensing measurement interaction in the sensing measurement session can be that the sensing PPDUs are transmitted on the high frequency, and other frames except the sensing PPDUs are transmitted on the low frequency, and the like, which are not listed one by one here. The description about the sensing measurement session here is also applicable to the ranging measurement session, and the specific description of the ranging measurement session is not detailed here.

[0241] As another possible implementation, the measurement request frame includes the mixed probing mode field, and the measurement mode of the measurement session can be different when the value of the mixed probing mode field is different. That is, the value of the mixed probing mode field corresponds to the measurement mode. The description about the sensing measurement session here is also applicable to the ranging measurement session, and the specific description of the ranging measurement session is not detailed here.

[0242] The following illustrates the relationship between the value of the mixed probing mode field and the measurement mode. The following is an example of the sensing measurement session, and the relevant description about the sensing measurement session here is also applicable to the ranging measurement session, and the following is not detailed for the ranging measurement session.

[0243] As an example 1, when the value of the mixed sounding mode field is a first value, the first value can indicate that the PPDUs (or signals, or frames, or OFDM symbols, etc., such as poll frames and CTS-to-self frames) in the polling phase of the sensing measurement session are transmitted on a first frequency band, the NDPA frames in the NDPA sounding phase of the sensing measurement session are transmitted on the first frequency band, and the PPDUs (such as report trigger frames and report frames) in the reporting phase of the sensing measurement session are transmitted on the first frequency band. Alternatively, the first value can indicate that the sensing PPDUs (such as the first PPDUs) in the NDPA sounding phase of the sensing measurement session are transmitted on a second frequency band, and the PPDUs (such as the probe trigger frames and the second PPDUs) in the TF sounding phase are transmitted on the second frequency band. Alternatively, the measurement mode indicated by the first value can be that the PPDUs in the polling phase are transmitted on a low frequency, the PPDUs in the reporting phase are transmitted on the low frequency, and the NDPA frames in the NDPA sounding phase are transmitted on the low frequency; and the sensing PPDUs in the NDPA sounding phase are transmitted on a high frequency, and the PPDUs in the TF sounding phase are transmitted on the high frequency. The description of the PPDUs in the various phases in this example also applies to the following, which is not described in detail.

[0244] As another example 2, when the value of the mixed sounding mode field is a second value, the second value can indicate that the PPDUs in the polling phase of the sensing measurement session are transmitted on a first frequency band, and the NDPA frames in the NDPA sounding phase of the sensing measurement session are transmitted on the first frequency band. Alternatively, the first value can indicate that the sensing PPDUs in the NDPA sounding phase of the sensing measurement session are transmitted on a second frequency band, the PPDUs in the TF sounding phase of the sensing measurement session are transmitted on the second frequency band, and the PPDUs in the reporting phase of the sensing measurement session are transmitted on the second frequency band. Alternatively, the measurement mode indicated by the second value can be that the PPDUs in the polling phase are transmitted on a low frequency, and the NDPA frames in the NDPA sounding phase are transmitted on the low frequency; and the sensing PPDUs in the NDPA sounding phase are transmitted on a high frequency, the PPDUs in the TF sounding phase are transmitted on the high frequency, and the PPDUs in the reporting phase are transmitted on the high frequency.

[0245] As yet another example 3, when the value of the mixed sounding mode field is a third value, the third value can indicate that the PPDUs in the polling phase of the sensing measurement session are transmitted on a first frequency band. Alternatively, the third value can indicate that the PPDUs in the phases other than the polling phase of the sensing measurement session are transmitted on a second frequency band. Alternatively, the measurement mode indicated by the third value can be that the PPDUs in the polling phase are transmitted on a low frequency, the PPDUs in the NDPA sounding phase are transmitted on a high frequency, the PPDUs in the TF sounding phase are transmitted on the high frequency, and the PPDUs in the reporting phase are transmitted on the high frequency.

[0246] As yet another example 4, when the value of the mixed sounding mode field is a fourth value, the fourth value can indicate that the PPDU in each of the stages in the sensing measurement session is transmitted on the second frequency band (or in other words, all on the high frequency).

[0247] As yet another example 5, when the value of the mixed sounding mode field is a fifth value, the fifth value can indicate that the sensing PPDUs (such as the first PPDU and the second PPDU) in the sensing measurement session are transmitted on the second frequency band. For example, the fifth value indicates that the sensing PPDUs in the NDPA sounding stage of the sensing measurement session and the sensing PPDUs in the TF sounding stage of the sensing measurement session are transmitted on the second frequency band.

[0248] The above examples 1-5 can be independent embodiments, or can be combined with each other as one embodiment. For example, the above examples 1 and 2 can be combined as one embodiment, at which time the measurement mode indicated by the mixed sounding mode field has two types. For another example, the above examples 1 and 3 can also be combined as one embodiment. For yet another example, the above examples 1-3 can also be combined as one embodiment. As for the combination of different examples, it is not listed one by one here. When different examples are combined as one embodiment, whether the value of the first value is the same in different embodiments is not limited by the embodiments of the present application. Similarly, whether the value of the second value (or the third value, the fourth value, the fifth value) is the same in different embodiments is not limited by the embodiments of the present application.

[0249] The above examples 1-5 are for TB sensing measurement interaction, and the mixed sounding mode field can also indicate the non-TB sensing measurement interaction shown above. The following illustrates the measurement mode of the mixed sounding mode field indicating the non-TB sensing measurement interaction.

[0250] As an example 6, when the value of the mixed sounding mode field is the first value, the first value can indicate that the sensing PPDUs in the non-TB sensing measurement interaction are transmitted on the second frequency band, and the sensing NDPA frame and the sensing measurement report frame are transmitted on the first frequency band.

[0251] As another example 7, when the value of the mixed sounding mode field is the second value, the second value can indicate that the sensing PPDUs and the report frame in the non-TB sensing measurement interaction are transmitted on the second frequency band, and the sensing NDPA frame is transmitted on the first frequency band.

[0252] As yet another example 8, when the value of the mixed sounding mode field is the third value, the third value can indicate that all frames in the non-TB sensing measurement interaction are transmitted on the second frequency band.

[0253] Examples 6-8 can be independent embodiments or can be combined as one embodiment. The description of the combination can refer to the above Examples 1-5, and will not be described in detail here.

[0254] In the embodiments of the present application, the measurement request frame can make the sensing response end clearly and effectively know the measurement mode of the sensing measurement session initiated by the sensing initiator through the mixed probe mode field.

[0255] (2) Transmit beam list field and receive beam list field

[0256] For the sensing measurement request frame, the transmit beam list field is used to indicate the index of the transmit beam used by the sensing response end or the sensing initiator in the sensing measurement session. The transmit beam can be the beam for transmitting the sensing PPDU. The transmit beam list can indicate the index explicitly, for example, the transmit beam list can include the index of one or more transmit beams. Alternatively, the transmit beam list can indicate the index implicitly, for example, the transmit beam can be indicated by a bit map, and the transmit beam corresponding to the bit with a value of 1 in the bit map can be the transmit beam used by the sensing response end, and the transmit beam corresponding to the bit with a value of 0 in the bit map can be the transmit beam that cannot be used by the sensing response end. Each sensing response end can correspond to one bit map.

[0257] The receive beam list field can be used to indicate the index of the receive beam used by the sensing response end or the sensing initiator in the sensing measurement session. The receive beam can be the beam for receiving the sensing PPDU. The receive beam list can indicate the index explicitly, for example, the receive beam list can include the index of one or more receive beams. Alternatively, the receive beam list can indicate the index implicitly, and the description of the implicit indication can refer to the above transmit beam list, and will not be described in detail here. The specific way of indicating the index by the transmit beam list or the receive beam list is not limited in the embodiments of the present application.

[0258] The index shown in the embodiments of the present application can also be replaced by information such as identification or number for identifying the beam, and the embodiments of the present application are not limited in this regard. The embodiments of the present application are illustrated by taking the transmit beam list or the receive beam list as an example, and in the specific implementation, the transmit beam set or the receive beam set, or one or more transmit beams, one or more receive beams, etc. can be used for replacement, and the embodiments of the present application are not limited in this regard.

[0259] The transmit beam list field and the receive beam list field shown above can also be included in the ranging measurement request frame, and the embodiments of the present application are not limited in this regard.

[0260] (3) link identification field, channel identification field and frequency band identification field

[0261] The measurement request frame can comprise one or more link identification fields, each of which can indicate the ID of a link. As in the case where the measurement request frame comprises multiple link identification fields, the multiple link identification fields can indicate multiple links. The multiple links can be the links used for transmitting the first frame in the perception measurement session. As part of the multiple links can be used for transmitting the first frame on low frequency, or part of the multiple links can be used for transmitting the first frame on high frequency.

[0262] The first frame can be at least one of the following frames: measurement request frame, measurement response frame, poll frame, CTS-to-self frame, NDPA frame, first PPDU, probe trigger frame, second PPDU, report trigger frame, report frame. The description of the first frame can refer to the perception communication method or the ranging communication method shown above.

[0263] For example, the PPDUs transmitted on low frequency can correspond to the same link (or multiple links), and the PPDUs transmitted on high frequency can correspond to the same link (or multiple links). Then the multiple link identification fields in the measurement request frame can indicate a link (or multiple links) used for transmitting PPDUs on low frequency, and indicate a link (or multiple links) used for transmitting PPDUs on high frequency.

[0264] The measurement request frame can comprise one or more channel identification (or channel ID) fields. Each channel identification field can indicate the ID of a channel. As in the case where the measurement request frame comprises multiple channel identification fields, the multiple channel identification fields can indicate multiple channels. The multiple channels can be the channels used for transmitting the first frame in the perception measurement session. The description of the channel identification field can refer to the description of the link identification field, which will not be described in detail here.

[0265] The measurement request frame can comprise one or more frequency band identification fields. Each frequency band identification field can indicate the ID of a frequency band. As in the case where the measurement request frame comprises multiple frequency band identification fields, the multiple frequency band identification fields can indicate multiple frequency bands. The multiple frequency bands can be the frequency bands used for transmitting the first frame in the perception measurement session. The description of the frequency band identification field can refer to the description of the link identification field, which will not be described in detail here. The description of the frequency point identification can refer to the description of the frequency band identification, which will not be described in detail here.

[0266] Taking the perception measurement session as an example, for the link ID field:

[0267] If the sensing initiator needs to establish sensing measurement sessions on at least two links (or at least two channels, or at least two frequency bands), the sensing measurement session on each link can correspond to a set of sensing parameters. A link ID field can be included in each set of sensing parameters, e.g., the link ID field in a set of sensing parameters can indicate which link the set of parameters is configured for.

[0268] The specific form of the sensing parameters in the sensing measurement request frame can be as follows: as an example, the sensing parameters corresponding to each link can be a separate field. As another example, the same parameters corresponding to the at least two links can form a sensing common parameters field, and the parameters that cannot be shared on each link can form a sensing link parameters field. For example, the same parameters corresponding to each link can be carried in the sensing common parameters field, and the parameters unique to each link can be carried in the parameter element of the link itself. The parameters indicated in the sensing common parameters field can not appear in the parameter element of each link itself, e.g., the corresponding field in the parameter element of each link itself can be set as reserved or does not carry the above parameters (i.e., the parameters common to each link). For example, in the case of setting the sensing parameters of each link itself in the parameter element of the link itself, the sensing parameters can not appear in the sensing common parameters field, e.g., the corresponding field in the sensing common parameters field can be set as reserved or does not carry the sensing parameters. The specific form of the sensing parameters is not limited in the embodiments of the present application.

[0269] For example, the same parameters can include, but are not limited to, a sensing measurement report requested or a measurement session expiry exponent. The description of the sensing measurement report requested field and the measurement session expiry exponent field can refer to the related standards or protocols, and will not be described in detail here.

[0270] Exemplarily, the above-mentioned non-shareable parameters can include at least one of the following: a BW field, a maximum transmission integrated millimeter wave-length training field repetition (max TX IMMW-LTF repetition), a maximum reception integrated millimeter wave-length training field repetition (max RX IMMW-LTF repetition), a maximum transmission space-time stream (TX STS), a maximum reception space-time stream (RX STS), a maximum transmission spatial stream (TX SS), a maximum reception spatial stream (RX SS), a number of RX antennas, a number of RX chains, a report timestamp, a Ng (or I Ng ), basic service set (BSS) color information, polarization sensing, polarization fusion, and a report type. Descriptions of the respective fields can refer to the above description of the capability information, or refer to descriptions of existing standards or protocols, and the like, which will not be described in detail herein.

[0271] Exemplarily, the two fields of an availability window and a scheduling subelement can be shared by all links (i.e., included in the above-mentioned same parameters), or be non-shareable parameters between links (i.e., included in the above-mentioned non-shareable parameters). As described above, the two fields can be carried in the sensing common parameters field, or be carried in the sensing link parameters field of the corresponding link.

[0272] In the embodiments of the present application, by including a link ID field, a channel ID field or a frequency band ID field in the measurement request frame, the initiator can indicate to the responder the link / channel / frequency band used to establish the current measurement session. The above-mentioned link ID / channel ID / frequency band ID is one-to-one corresponding to the actual link / channel / frequency. After receiving the measurement request frame, the responder can explicitly know through the above-mentioned fields that the measurement session established by the responder occurs on which link / channel / frequency.

[0273] (4) Time information and periodicity information

[0274] The measurement request frame can comprise time information, which can be used to indicate a window corresponding to the measurement session. For example, the time information can be used to indicate a sensing window (or sensing availability window) corresponding to the sensing measurement session, or to indicate a ranging window (or ranging availability window) corresponding to the ranging measurement session. Through the time information, the sensing initiator and the sensing responder can perform sensing measurement within the sensing window indicated by the time information, or the ranging initiator and the ranging responder can perform ranging measurement within the ranging window indicated by the time information. For example, the time information can be included in the measurement request frame in the form of an element. For example, the time information can be carried in a responding station (RSTA) availability window element in the measurement request frame. The specific form of the time information carried in the measurement request frame is not limited in the embodiments of the present application.

[0275] Optionally, the measurement request frame can comprise period information, which can be used to indicate a period corresponding to the measurement session. For example, the period information can be used to indicate a period corresponding to the sensing measurement session, or to indicate a period corresponding to the ranging measurement session. The period can also be the period of the window shown above. For example, the period information can be carried in the measurement request frame in the form of an element. For example, the time information can be carried in the RSTA availability window element. The specific form of the period information carried in the measurement request frame is not limited in the embodiments of the present application.

[0276] The time information and the period information can be carried in the same element (or the same field), or the time information and the period information can be carried in different elements (or different fields). The specific form of the time information and the period information in the measurement request frame is not limited in the embodiments of the present application.

[0277] The scheduling sub-element shown below can also be used to implement the functions of the time information and the period information. That is, as an example, the measurement request frame can comprise time information or period information. As another example, the measurement request frame can comprise a scheduling sub-element. As yet another example, the time information, the period information or the scheduling sub-element can appear in the measurement request frame in combination. The specific form of the combination is not limited in the present application. For example, the scheduling sub-element can be carried in the optional sub-element in the measurement request frame.

[0278] Table 3 shows an example of the format of the scheduling sub-element.

[0279] Table 3

[0280] The length and name of each field in Table 3 are only examples and should not be construed as limiting the embodiments of the present application.

[0281] FIG. 8 is a format diagram of an IMMW sensing measurement parameter element in a sensing measurement request frame according to an embodiment of the present application. The IMMW ranging measurement parameter element in a ranging measurement request frame can be described with reference to FIG. 8, and the present application will not be described in detail.

[0282] As shown in FIG. 8, the IMMW sensing measurement parameter can include at least one of the following: element ID, length, element ID extension, IMMW sensing measurement parameters, or sensing subelements (or optional subelements). The element ID field and the element ID extension field can be used to identify the IMMW sensing measurement parameter element. The length field can be used to indicate the length of the IMMW sensing measurement parameter element.

[0283] The IMMW sensing measurement parameter field can include at least one of the following: mixed probe mode field (or mixed probe field), link ID field, channel ID field, and frequency band ID field. FIG. 8 exemplarily shows the mixed probe mode field, and other fields are not shown in FIG. 8. For example, the sensing subelement field can include at least one of the following (not shown in FIG. 8): transmission beam list field, reception beam list field, time information, periodicity information, or scheduling subelement field. The description of each field or information shown herein can be referred to the above, and will not be described in detail herein.

[0284] Optionally, the IMMW sensing measurement parameter field can further include at least one of the following: sensing transmitter, sensing receiver, mono-static sensing, need for sensing measurement report, measurement session expiration index, BW, TX IMMW-LTF repetition, RX IMMW-LTF repetition, TX STS, RX STS, number of RX antennas, number of RX chains, report timestamp, I Ng (or Ng), BSS color information, polarization sensing, polarization fusion, or report type. The meaning of several fields is exemplarily shown below, and the meaning of other fields can be referred to the above or related standards or protocols, and the present application will not be described in detail.

[0285] Sensing transmitter: used to indicate whether the sensing responder is a sensing transmitter.

[0286] Sensing receiver: used to indicate whether the sensing responder is a sensing receiver.

[0287] Monostatic sensing: used to indicate whether the sensing responder performs self-sensing and self-receiving.

[0288] It can be understood that the embodiments of the present application are exemplified by using the monostatic sensing field to indicate whether the sensing responder performs self-sensing and self-receiving. In the specific implementation, the sensing transmitter field and the sensing receiver field can also be used to indicate whether the sensing responder performs self-sensing and self-receiving. For example, when the value of the sensing initiator field and the value of the sensing responder field are both 0 or both 1, it indicates that the sensing responder can be a sensing transmitter or a sensing receiver, that is, the sensing responder can perform self-sensing and self-receiving.

[0289] Sensing measurement report requested: used to indicate whether the sensing responder needs to perform feedback of the sensing measurement result. That is, the field can indicate whether the sensing responder feeds back the sensing measurement result.

[0290] Measurement session expiry exponent: used to indicate the expiration index of the sensing measurement session. The field can contain an unsigned integer, indicating a period of time. Within the sensing agreed time window, the AP starts to count down the time length indicated by the field after monitoring the frames (such as the frames related to the sensing measurement session) in the channel. When the countdown ends, there is still no frame interaction in the channel, and the AP can consider that the current sensing measurement session process is over. For example, the value of the field can be 2procedure expiry exponent+8 ms, and the value of the parameter procedure expiry exponent is equal to the time length indicated by the measurement session expiry exponent field.

[0291] BW field: used to indicate the bandwidth.

[0292] TX IMMW-LTF repetition field: can be used to indicate the number of repetitions of the transmitted IMMW-LTF.

[0293] RX IMMW-LTF repetition field: can be used to indicate the number of repetitions of the received IMMW-LTF.

[0294] RX STS field: can be used to indicate the number of receive space-time streams of the sensing PPDU.

[0295] RX STS field: can be used to indicate the number of receive space-time streams of the sensing PPDU.

[0296] Number of RX antennas field: used to indicate the number of receiving antennas. The number of RX antennas field can also be replaced by a number of RX chains field. Number of RX chains field: used to indicate the number of receiving chains.

[0297] Optionally, the IMMW sensing measurement parameter element can further include at least one of the following (not shown in FIG. 8):

[0298] Number of exchange per burst field: used to indicate the number of exchanges within each burst.

[0299] Number of beams per exchange field: used to indicate the number of beams within each exchange. The number of beams can be the number of transmitting beams in each measurement exchange, or the number of receiving beams in each measurement exchange, or the sum of the number of transmitting beams and the number of receiving beams. Alternatively, the number of beams can be the number of beams in the first exchange.

[0300] Each exchange repetition field: used to indicate the maximum number of repetitions of the transmission (signal) within each exchange, i.e. the maximum number of repeated transmissions of the transmitting beam within each exchange. Alternatively, the field can be used to indicate the maximum number of repetitions of the transmission (signal) within the first exchange.

[0301] The above description of each field is only an example, and the meaning or description of each field can also refer to the related standards or protocols, etc., which will not be listed one by one here.

[0302] In the embodiments of the present application, the sensing measurement request frame includes the hybrid sounding mode field, so that the sensing response end can explicitly know the measurement mode of the sensing measurement session between the sensing response end and the sensing initiation end. Therefore, the sensing initiation end and the sensing response end can perform sensing based on the measurement mode indicated by the hybrid sounding mode field, improve the flexibility of measurement mode indication, and improve the efficiency of information interaction.

[0303] The measurement response frame can comprise a status code field, which can be used to indicate the feedback result of the measurement request frame by the responding end. The status code field can carry the following contents: success, rejected with suggested changes, request declined. For example, in the case that the status code field carries rejected with suggested changes, the measurement response frame can carry a parameter element, which can carry the information of the parameters or measurement mode suggested by the responding end, etc.

[0304] For the sensing communication method, the parameter element in the sensing measurement response frame can be the parameter suggested by the sensing responding end. For the ranging communication method, the parameter element in the measurement response frame can be the parameter assigned by the ranging responding end to the ranging initiating end, which is specifically used in the ranging measurement session.

[0305] The above-mentioned parameter element can comprise a hybrid sounding mode field, and the description of the hybrid sounding mode field can refer to the above, which will not be described in detail here.

[0306] For the stage of the sensing measurement interaction:

[0307] The sensing NDPA frame involved in the sensing measurement interaction of the TB will be described in detail below.

[0308] The sensing NDPA frame can comprise at least one of the following: a beam indication field, a switching field, a count field, a total number field or a sequence field.

[0309] (1) Beam indication field

[0310] The beam indication field can be used to indicate the transmit beam index used by the sensing initiating end or the receive beam index used by the sensing responding end in the sensing measurement interaction (such as the NDPA sounding stage) of the sensing measurement session corresponding to the sensing NDPA frame. The aforementioned transmit beam index and receive beam index can also be used to determine the transmit beam index used by the sensing responding end. That is, the sensing initiating end can allocate the beam needed to be used in the sensing measurement interaction (such as the NDPA sounding stage in the sensing measurement interaction) for each sensing responding end in each sensing measurement interaction. For example, the sensing responding end can know the transmit beam or receive beam of the sensing PPDU in the NDPA sounding stage in the sensing measurement interaction through the above-mentioned beam indication field.

[0311] In the case that the transmit beam list field is included in the sensing measurement request frame, the transmit beam index indicated by the beam indication field can be the index of the transmit beam in the transmit beam list, i.e., the transmit beam indicated by the beam indication field can be contained in the transmit beam list. In the case that the receive beam list field is included in the sensing measurement request frame, the receive beam index indicated by the beam indication field can be the index of the receive beam in the receive beam list, i.e., the receive beam indicated by the beam indication field can be contained in the receive beam list.

[0312] For example, the beam indication field can carry a starting beam index (also referred to as a first beam index). The starting beam index can correspond to an index in the transmit beam list, or an index in the receive beam list. That is, the sensing initiator can assign a starting beam index in the current sensing measurement interaction to each sensing responder.

[0313] For example, the starting beam index can be carried in one field in the beam indication field, by which the starting index of the transmit beam and the starting index of the receive beam are indicated simultaneously.

[0314] For another example, the starting beam index can be carried in two fields in the beam indication field, by which the starting index of the transmit beam and the starting index of the receive beam are indicated respectively. The starting index shown herein is relative to the current sensing measurement interaction, for example, the transmit beam list includes multiple transmit beams, and the receive beam list includes multiple receive beams. By the starting beam index, the sensing responder can explicitly know which transmit beams and which receive beams it uses in the current sensing measurement interaction. The index of the transmit beam is contained in the above-mentioned transmit beam list, and the index of the receive beam is contained in the above-mentioned receive beam list. Further, the sensing responder can also determine the transmit beams or receive beams it uses in the NDPA probe phase in the current sensing measurement interaction in combination with the starting beam index and the number of beams per interaction field in the sensing measurement request frame.

[0315] FIG. 9a is a schematic diagram of a format of a sensing NDPA frame according to an embodiment of the present application. FIG. 9a exemplarily shows a station information field (STA info field) when the AID (such as AID 11) in the sensing NDPA frame is less than 2008.

[0316] As shown in FIG. 9a, the beam indication field shown above is referred to as a first beam index field. The specific name of the beam indication field is not limited in the embodiments of the present application. The first beam index field can be used by the sensing initiator to assign an index of a starting beam to each sensing responder for use in the current sensing measurement interaction.

[0317] The beam indication field can be carried in the STA information field with an AID less than an AID threshold (e.g., 2008) to enable each sensing responder to explicitly learn the index of the starting beam assigned by the sensing initiator.

[0318] As shown in FIG. 9a, the beam indication field shown above is referred to as a first beam index field. The specific name of the beam indication field is not limited in the embodiments of the present application. The first beam index field can be used by the sensing initiator to assign an index of a starting beam to each sensing responder for use in the current sensing measurement interaction.

[0319] The sensing NDPA frame can also be combined with one or more fields in the sensing measurement request frame shown above. For example, the sensing NDPA frame can also include a hybrid sounding mode field. The following is an example.

[0320] FIG. 9b is another format of the sensing NDPA frame according to the embodiments of the present application. FIG. 9b shows a format of the STA Info field with a value of 2045 for the AID 11 field (i.e., AID 11 = 2045) in the sensing NDPA frame. As shown in FIG. 9b, B27 can be set as a hybrid sounding mode field, i.e., a hybrid sounding field. When the field is 1, it indicates that the NDPA sounding phase is a high-low frequency hybrid measurement mode. When the field is 0, it indicates that the NDPA sounding phase is a normal measurement mode. The sensing NDPA frame shown in FIG. 9b can be used in the TB sensing measurement interaction or the non-TB sensing measurement interaction, which is not limited in the embodiments of the present application.

[0321] In addition to being carried in the STA info field with AID 11 = 2045, the hybrid sounding mode field can also be carried in the STA Info field with other predetermined AIDs, which is not limited in the embodiments of the present application. For example, the hybrid sounding mode field can be multiplexed with a reserved bit or other ways, which are not listed one by one here.

[0322] As an example, the content shown in FIG. 9a can be carried in the STA Info field with AID less than 2008 in the sensing NDPA frame. The content shown in FIG. 9b can be carried in the STA Info field with predetermined AID in the sensing NDPA frame, or in the common Info field.

[0323] As another example, the content shown in FIG. 9a and FIG. 9b can be carried in the STA Info field with predetermined AID in the sensing NDPA frame, or in the common Info field. At this time, the content shown in FIG. 9a and FIG. 9b can be combined, and the combined content can be carried in the STA Info field with predetermined AID in the sensing NDPA frame or in the common Info field.

[0324] The description of the sensing NDPA frame also applies to the ranging NDPA frame, which will not be described in detail here.

[0325] FIG. 9c is a schematic diagram of a ranging NDPA frame according to an embodiment of the present application. The specific description of the ranging NDPA frame can be referred to the related standards or protocols, or the above. For example, as shown in FIG. 9c, any one or more bits in the B27-B30 field reserved in the current standard 802.11az standard can be set as a hybrid sounding mode field, so as to indicate a high-low frequency hybrid measurement mode. Taking B28 as an example, when the field is 1, it indicates that the NDPA sounding stage is a high-low frequency hybrid measurement mode; when the field is 0, it indicates that the NDPA sounding stage is a normal measurement mode. AID 11 in FIG. 9c can be equal to 2045, and the hybrid sounding mode field can be carried in the STA Info field with other predetermined AIDs in addition to AID 11 = 2045, which is not limited in the present application. The field can be multiplexed with the reserved bits for indication, or other manners, which will not be listed one by one here. The ranging NDPA frame shown in FIG. 9c can be used in TB ranging measurement interaction, or in non-TB ranging measurement interaction, which is not limited in the embodiments of the present application.

[0326] The NDPA frames shown in FIG. 9b and FIG. 9c can be applied to the case that the NDPA frame is transmitted in low frequency and the sensing / ranging PPDU is transmitted in high frequency. For this hybrid sounding mode, the embodiments of the present application add a new type of NDPA as shown in FIG. 9b and FIG. 9c.

[0327] The length or name of each field shown in FIGS. 9a-9c is only an example and should not be construed as a limitation of the embodiments of the present application. The above is illustrated by taking the AID threshold value as 2008, which can also change as the standard evolves, and the embodiments of the present application do not limit this. The beam indication field is exemplarily shown in FIG. 9a, and the switching field and the count field shown below are not shown.

[0328] The NDPA frame shown in FIGS. 9a-9c is only an example, and the NDPA frame can also combine other fields shown in the present application, such as the fields in the NDPA frame are not limited to the beam indication field, the switching field or the count field shown in the embodiments of the present application, and the fields in the NDPA frame can also be in other frames shown in the embodiments of the present application, and the related fields that can be carried in the NDPA frame are not listed one by one here for combined description. That is, the fields in each frame shown in the embodiments of the present application can combine with each other.

[0329] (2) Switching field

[0330] The switching field can be used to indicate to the sensing response end whether the sensing initiation end performs frequency band switching after sending the sensing NDPA frame. Or in other words, the switching field can be used to indicate whether the sensing PPDU after the sensing NDPA frame is transmitted through another frequency band. The other frequency band shown here is relative to the frequency band used to transmit the sensing NDPA frame.

[0331] For example, the sensing NDPA frame is transmitted on a low frequency, and the switching field can be used to indicate whether the sensing PPDU can be transmitted on a high frequency. That is, the switching field can be used to indicate to the sensing response end whether the sensing initiation end will switch to a high frequency to transmit the sensing PPDU on the high frequency. Or in other words, the switching field can be used to indicate whether the sensing PPDU after the sensing NDPA frame will be transmitted through a millimeter wave.

[0332] For example, when the value of the switching field is 1, it indicates that the sensing PPDU after the sensing NDPA frame will be transmitted through another frequency band. For example, when the sensing NDPA frame is transmitted through a low frequency, the sensing PPDU can be transmitted through a high frequency. For another example, when the value of the switching field is 0 (or reserved), it indicates that the sensing PPDU after the sensing NDPA frame will not be transmitted through another frequency band, that is, the sensing NDPA frame and the sensing PPDU are transmitted through the same frequency band. For example, when the sensing NDPA frame is transmitted through a low frequency (or a high frequency), the sensing PPDU can also be transmitted through the low frequency (or the high frequency).

[0333] As an example, the switching field can be carried in the STA information field with an AID less than the AID threshold value (such as 2008).

[0334] As another example, the switching field can be carried in the STA information field of a predetermined AID, which can be the STA information field of an AID greater than or equal to an AID threshold (e.g., 2008). For example, the switching field can be carried in the STA information field of AID 2045.

[0335] In embodiments of the present application, the sensing NDPA frame can further indicate whether the sensing initiator will switch frequency band by including the switching field.

[0336] (3) Count field

[0337] The count field can be used to indicate to the sensing responder the number of sensing NDPA frames to be sent by the sensing initiator.

[0338] As an example, the count field can be carried in the STA information field of a predetermined AID in the sensing NDPA frame. In this way, all sensing responders receiving the sensing NDPA frame can explicitly know how many sensing NDPA frames will be sent by the sensing initiator after the sensing responder receives the sensing NDPA frame. Thus, the sensing responder can explicitly know the duration from the time it receives the sensing NDPA frame to the time it receives the sensing PPDU (e.g., the first PPDU). That is, the sensing responder can explicitly know the waiting duration through the count field, which can be the duration from the time the sensing responder receives the sensing NDPA frame to the time it receives the sensing PPDU.

[0339] As another example, the count field can be carried in the STA information field of an AID less than an AID threshold in the sensing NDPA frame.

[0340] For example, when the sensing NDPA frame is transmitted at a high frequency, such as when the sensing initiator sends the sensing NDPA frame in multiple directions, the sensing NDPA frame can include the count field. In this way, it can be ensured that the sensing responders in all directions can receive the sensing NDPA frame.

[0341] When the value of the count field is 0, it can indicate that the sensing NDPA frame in which the count field is located is the last sensing NDPA frame. That is, the sensing NDPA frame is the last sensing NDPA frame sent by the sensing initiator. For example, the sensing initiator needs to send 5 sensing NDPA frames, in the case of sending the sensing NDPA frame for the first time, the value of the count field can be 4, in the case of sending the sensing NDPA frame for the second time, the value of the count field can be 3, in the case of sending the sensing NDPA frame for the third time, the value of the count field can be 2, in the case of sending the sensing NDPA frame for the fourth time, the value of the count field can be 1, and in the case of sending the sensing NDPA frame for the fifth time, the value of the count field can be 0.

[0342] The count field shown in the embodiments of the present application can also be referred to as an NDPA count field or a sensing NDPA frame count field, etc. The specific name of the count field is not limited in the embodiments of the present application.

[0343] (4) Total number field and sequence field

[0344] As an example, the total number field can be used to indicate to the sensing responder (i.e., the sensing responder receiving the total number field) that the total number Nsta of sensing NDPA frames sent by the sensing initiator in the current sensing measurement interaction. The sequence field can be used to indicate to the sensing responder that the sequence of the sensing NDPA frame received by the sensing responder in the Nsta sensing NDPA frames in the current sensing measurement interaction. Nsta is a positive integer.

[0345] As another example, the total number field can be used to indicate to the sensing responder that the total number of sensing responders participating in the interaction in the current sensing measurement interaction. In other words, the total number field can be used to indicate to the sensing responder that how many sensing responders are coordinated by the sensing initiator to participate in the NDPA probe stage in the current sensing measurement interaction. The total number of sensing responders can be the same as the total number of sensing NDPA frames described above. The sequence field can be used to indicate to the sensing responder that the sequence of the sensing responder receiving the sensing NDPA frame in the total number in the current sensing measurement interaction. In other words, the sequence field can be used to indicate that the sensing responder receiving the sequence field is the xth sensing responder in the NDPA probe stage (or the sensing responder is the xth device receiving the sensing NDPA frame, and x has the same value as the value indicated by the sequence field). The sequence of the sensing responder is the same as the sequence of the sensing NDPA frame described above.

[0346] As an example, the total number field described above can be referred to as an Nsta field, and the sequence field can be referred to as a STA ID field. The value of the STA ID field can be x, x is a positive integer less than or equal to Nsta.

[0347] For example, the total number field can be carried in the STA information field of the sensing NDPA frame with a predetermined AID. The sequence field can be carried in the STA information field corresponding to the sensing response end.

[0348] Through the total number field and the sequence field, the sensing initiation end can implicitly indicate each sensing response end that the sensing initiation end will subsequently send (Nsta-x) sensing NDPA frames.

[0349] Optionally, the total number field, the sequence field and the count field are not simultaneously present in the sensing NDPA frame. For example, the sensing NDPA frame can include the count field, or the total number field and the sequence field, or the total number field, or the sequence field. Optionally, the count field, the total number field and the sequence field can also be simultaneously present in the sensing NDPA frame, which is not limited in the embodiments of the present application.

[0350] When the sensing initiation end simultaneously sends multiple sensing NDPA frames, the total number field and the sequence field can be set as reserved or predetermined values. For another example, the count field can also be set as a reserved or predetermined value. Optionally, the sensing NDPA frame can further include a field, which can be used to indicate the transmission mode of the sensing NDPA frame.

[0351] The description of other fields in the sensing NDPA frame can refer to related standards or protocols, and the like, which will not be described in detail herein.

[0352] The following will describe the probe trigger frame involved in the TB sensing measurement interaction in detail.

[0353] As a possible implementation manner, as shown above, the probe trigger frame can be transmitted at a low frequency, and the sensing / ranging PPDU can be transmitted at a high frequency. For this hybrid probe mode, the embodiments of the present application add a new trigger subtype under the ranging trigger or the sensing trigger. The following will describe in detail:

[0354] The current trigger type subfield is shown in Table 4.

[0355] Table 4

[0356] In Table 4, when the value of the trigger type subfield is 8, the value can indicate that the trigger frame is a trigger frame for ranging or for sensing.

[0357] FIG. 10 is a format of a trigger-related common information field in a probe trigger frame according to an embodiment of the present application. As shown in FIG. 10, the B4 bit in the trigger-related common information field can be used to distinguish whether the trigger frame carrying the field is a ranging probe trigger frame (e.g., B4 reserved or B4 = 0) or a sensing probe trigger frame (e.g., B4 = 1).

[0358] In the embodiments of the present application, a new sub-type is added in the sensing trigger sub-type field. Table 5 exemplarily shows the sensing trigger sub-type field with the new sub-type.

[0359] Table 5

[0360] As shown in Table 5, when the value of the sensing trigger sub-type field in the trigger-related common information field is 5, the value can indicate that the trigger frame is a trigger frame in the SR2SI mixed probe mode. The related description about the sensing probe trigger frame herein also applies to the ranging probe trigger frame.

[0361] Generally, the probe trigger frame can include a trigger-related common information field and a user information field. Exemplarily, the description about the trigger-related common information field can refer to FIG. 10 or Table 5. The user information field shown in FIG. 11 below can be combined with the trigger-related common information field shown in Table 4 above or the trigger-related common information field shown in Table 5 above. The description about the user information field can also refer to the following. Of course, at least one of the beam indication field, the switching field, and the link ID field shown below can also be carried in the trigger-related common information field in the probe trigger frame.

[0362] In the embodiments of the present application, the probe trigger frame can include at least one of the following: a beam indication field, a switching field, a link ID field, a channel ID field, or a frequency range ID field.

[0363] (1) Beam indication field

[0364] The beam indication field is used to indicate the transmit beam index used by the sensing response end in the sensing measurement interaction corresponding to the probe trigger frame in the sensing measurement session, or the receive beam index used by the sensing response end. The receive beam index can be used to determine the transmit beam index.

[0365] The other description about the beam indication field can refer to the above, which will not be described in detail herein.

[0366] Figure 11 is a schematic diagram of a format of a probe trigger frame according to an embodiment of the present application. Figure 11 exemplarily shows a user info field when an AID (e.g., AID 12) in the probe trigger frame is not equal to an AID threshold. Alternatively, the format of the user info field is also applicable to a user info field when a USID (e.g., USID 12) in the probe trigger frame is not equal to a USID threshold. The specific value of the AID threshold or the USID threshold is not limited in the embodiments of the present application, e.g., the AID threshold = 2008.

[0367] As shown in Figure 11, the user info field can comprise a first beam index field (i.e., a beam indication field). The description of the first beam index field can refer to Figure 9a, which will not be repeated here.

[0368] In the embodiments of the present application, the sensing initiator can be a receiving end of the second PPDU, and thus the first beam index field can be used to indicate the index of the transmission beam used by the sensing responder.

[0369] Similar to the beam indication field shown in Figure 9a, when the sensing initiator assigns the same starting beam to each sensing responder in the TF probe phase of the current sensing measurement interaction, the beam indication field can be carried in a trigger dependent common info field in the probe trigger frame.

[0370] The description of the beam indication field shown in Figure 11 can refer to the related description in Figure 9a, which will not be repeated here.

[0371] (2) Switch field

[0372] The field can be used to indicate to the sensing responder whether the sensing initiator performs frequency band switching after sending the probe trigger frame. Alternatively, the switch field can be used to indicate whether the sensing PPDU after the probe trigger frame is transmitted through another frequency band. The other frequency band shown here is relative to the frequency band used to transmit the probe trigger frame.

[0373] For example, the probe trigger frame is transmitted on a low frequency, and the switch field can be used to indicate whether the sensing PPDU can be transmitted on a high frequency. That is, the switch field can be used to indicate whether the sensing responder needs to switch to a high frequency to transmit the sensing PPDU on the high frequency. Alternatively, the switch field can be used to indicate whether the sensing PPDU after the probe trigger frame is transmitted through millimeter waves.

[0374] When the value of the switch field is 1, it indicates that the sensing PPDU after the probe trigger frame needs to be transmitted through another frequency band. For example, the probe trigger frame is transmitted through a low frequency, and the sensing PPDU can be transmitted through a high frequency. For another example, when the value of the switch field is 0, it indicates that the sensing PPDU after the probe trigger frame will not be transmitted through another frequency band, that is, the probe trigger frame and the sensing PPDU are transmitted through the same frequency band. For example, the probe trigger frame is transmitted through a low frequency (or a high frequency), and the sensing PPDU can also be transmitted through a low frequency (or a high frequency).

[0375] As an example, the switch field can be carried in the user information field when the AID (or USID) is not equal to 2008. As another example, the switch field can be carried in the trigger-related common information field.

[0376] (3) Link ID field

[0377] The link ID field can be used to indicate the transmission link of the sensing PPDU after the probe trigger frame.

[0378] For example, when one or more link ID fields are carried in the sensing measurement request frame, the link ID field in the probe trigger frame can be used to indicate the transmission link of the sensing PPDU after the probe trigger frame. The transmission link can be one of the one or more links indicated by the one or more link ID fields in the sensing measurement request frame. Alternatively, in the establishment stage of the sensing measurement session, the sensing initiator indicates that it has established a sensing measurement session with the sensing responder on more than one link through the multiple link ID fields, and the sensing initiator can carry the link ID field in the probe trigger frame. The link ID field in the probe trigger frame can be used to indicate the transmission link of the sensing PPDU after the probe trigger frame. The number of the link ID field in the probe trigger frame is not limited in the embodiments of the present application.

[0379] Similarly, the channel ID field or the frequency band ID field can also be included in the probe trigger frame. The channel ID field can be used to indicate the transmission channel of the sensing PPDU after the probe trigger frame. The frequency band ID field can be used to indicate the transmission frequency band of the sensing PPDU after the probe trigger frame.

[0380] As an example, the link ID field can be carried in the trigger-related common information field. The link ID field in the trigger-related common information field can be used to indicate the transmission link of the sensing PPDU of the respective sensing responder. In this case, the sensing initiator can trigger multiple sensing responders to transmit sensing PPDUs simultaneously by means of the probe trigger frame, e.g. the sensing initiator can schedule the multiple sensing responders to transmit sensing PPDUs on non-colliding resources. The non-colliding resources can include different spatial streams, or different RU multiple RU (MRU) or distributed resource unit (DRU) etc.

[0381] As another example, the link ID field can be carried in the user information field. The link ID field in the user information field can be used to indicate the transmission link of the sensing PPDU of the sensing responder corresponding to the user information field. Thus, the sensing initiator can schedule different sensing responders to transmit sensing PPDUs on different links.

[0382] The description of the channel ID field or the frequency range ID field can refer to the description of the link ID field, which will not be described in detail here.

[0383] The sensing NDPA frame involved in the non-TB sensing measurement interaction will be described in detail below.

[0384] The sensing NDPA frame can include at least one of the following: a beam indication field, a switching field, a link ID field, a channel ID field, or a frequency range ID field.

[0385] In the non-TB sensing measurement interaction, in the case of bidirectional measurement (i.e. the initiator (non-AP STA) as the sensing transmitter and the responder (AP STA) as the sensing receiver; or the responder (AP STA) as the sensing transmitter and the initiator (non-AP STA) as the sensing receiver), the beam indication field can be used to indicate at least one of the following: the index of the transmission beam used by the sensing initiator, the index of the reception beam used by the sensing responder, the index of the transmission beam used by the sensing responder, or the index of the reception beam used by the sensing initiator. For example, the beam indication field can indicate the starting index of the transmission beam used by the sensing transmitter, or the starting index of the reception beam used by the sensing receiver, etc. The specific content indicated by the beam indication field can be set in combination with the specific steps of the non-TB sensing measurement interaction shown above. The description of the beam indication field can refer to the above, which will not be described in detail here.

[0386] In the non-TB sensing measurement interaction, in the case of bidirectional measurement, the switching field can be used to indicate to the sensing response end whether the sensing initiation end performs frequency band switching after sending the sensing NDPA frame. Or, the switching field can be used to indicate whether the sensing PPDU after the sensing NDPA frame is transmitted through another frequency band. The description of the switching field can be referred to the above, and will not be described in detail here. The description of the link ID field, the channel ID field or the frequency band ID field can be referred to the above, and will not be described in detail here.

[0387] FIG. 12 is a format diagram of the sensing NDPA frame provided by the embodiments of the present application. The description of FIG. 11 can be referred to the above, and will not be described in detail here.

[0388] Exemplarily, the sensing NDPA frame can also include a group transmission ID field. The group transmission ID field can identify the group transmission.

[0389] Generally, the group transmission mechanism can be used in the millimeter wave, for example, multiple interactions in a group transmission can complete the Doppler related measurement. In order to interact the group transmission information, the sensing NDPA frame can include a group transmission ID field to identify the group transmission. Exemplarily, the group transmission ID field can be carried in the predetermined AID STA information field in the sensing NDPA frame. For example, the AID of the predetermined AID can be greater than or equal to 2008. For example, the AID of the predetermined AID is 2046.

[0390] The SBP request frame related to the embodiments of the present application is described in detail below.

[0391] As a possible implementation, the SBP request frame includes an SBP report link ID field, which can be used to indicate the transmission link of the SBP report frame, or to indicate the transmission link of the SBP report frame. Or, the SBP report link ID field can be used to indicate to the SBP response end that the SBP initiation end expects to receive the SBP report frame on the indicated link. The name of the SBP report link ID field shown here is only an example, which should not be understood as a limitation to the embodiments of the present application. The link ID field shown here can also be replaced by a channel ID field or a frequency band ID field. Of course, the SBP request frame can also include at least two of the link ID field, the channel ID field or the frequency band ID field.

[0392] The specific form of the SBP report link ID field in the SBP request frame is not limited by the embodiments of the present application. For example, the SBP report link ID field can be carried in the SBP request frame in a separate field; or, the SBP report link ID field can be carried in the SBP request frame in the form of an element.

[0393] For example, when the SBP response frame includes a "rejected_with_suggested_changes" field, the SBP response frame can also include an SBP report link ID field. Details are not repeated here.

[0394] As another possible implementation, the SBP initiator receives the SBP report frame on the link on which the SBP request frame is sent by default. That is, the SBP responder can send the SBP report frame on the link on which the SBP request frame is received. At this time, the behavior rule can be declared in the standard without modification of the frame format.

[0395] The communication apparatus provided by the embodiments of the present application will be described below.

[0396] The communication apparatus is divided into functional modules according to the method embodiments of the present application. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the present application is illustrative, and is only a logical functional division. Actual implementation can have another division manner. The communication apparatus of the embodiments of the present application will be described in detail below with reference to FIGS. 13 to 15.

[0397] The communication apparatus shown in the embodiments of the present application can also be referred to as a sensing communication apparatus or a ranging communication apparatus, and the specific name of the apparatus is not limited in the present application.

[0398] FIG. 13 is a structural schematic diagram of the communication apparatus provided by the embodiments of the present application. As shown in FIG. 13, the communication apparatus includes a processing module 1301 and a transceiver module 1302. The transceiver module 1302 can implement corresponding communication functions, and the processing module 1301 is configured to implement corresponding processing functions. The transceiver module 1302 can also be referred to as an interface module, a communication interface, a communication module, or an input / output interface.

[0399] In some embodiments of the present application, the communication apparatus can be used to perform the actions performed by the sensing initiator in the above method embodiments. At this time, the sensing initiator can be the sensing device itself or a chip or a functional module configured in the device. The transceiver module 1302 is configured to perform the transceiving-related operations or the input / output-related operations of the sensing initiator in the above method embodiments, and the processing module 1301 is configured to perform the processing-related operations of the sensing initiator in the above method embodiments.

[0400] The transceiver module 1302 can be configured to transmit or output the sensing measurement request frame, and receive or input the sensing measurement response frame. The processing module 1301 can be configured to generate the sensing measurement request frame, and parse the sensing measurement response frame, etc.

[0401] As an example, the transceiver module 1302 can be configured to transmit the sensing measurement request frame, e.g., to the sensing response end. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0402] As another example, the transceiver module 1302 can be configured to output the sensing measurement request frame. The transceiver module 1302 can include an input / output module, etc.

[0403] The transceiver module 1302 can also be configured to transmit or output the polling frame, and receive or input the CTS-to-self frame. The processing module 1301 can be configured to generate the polling frame, and parse the CTS-to-self frame.

[0404] The transceiver module 1302 can also be configured to transmit or output the sensing NDPA frame. The processing module 1301 can be configured to generate the sensing NDPA frame.

[0405] The transceiver module 1302 can also be configured to transmit or output the sensing probe trigger frame. The processing module 1301 can be configured to generate the sensing probe trigger frame.

[0406] The transceiver module 1302 can also be configured to transmit or output the sensing PPDU; or, receive or input the sensing PPDU.

[0407] The transceiver module 1302 can also be configured to transmit or output the report trigger frame, and receive or input the report frame. The processing module 1301 can be configured to generate the report trigger frame, and parse the report frame.

[0408] The specific description of the sensing initiating end can also refer to the method embodiments shown above, which will not be listed one by one here.

[0409] Referring to FIG. 13, in some embodiments of the present application, the communication apparatus can be configured to perform the actions performed by the sensing response end in the above method embodiments, which can be the sensing device itself or a chip or functional module configured in the device, etc. The transceiver module 1302 is configured to perform the transceiving related operations or the input / output related operations of the sensing response end in the above method embodiments, and the processing module 1301 is configured to perform the processing related operations of the sensing response end in the above method embodiments.

[0410] The transceiver module 1302 can be configured to receive or input the sensing measurement request frame, and transmit or output the sensing measurement response frame. The processing module 1301 can be configured to parse the sensing measurement request frame, and generate the sensing measurement response frame, etc.

[0411] As an example, the transceiver module 1302 can be configured to receive the sensing measurement request frame from the sensing initiator. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0412] As another example, the transceiver module 1302 can be configured to input the sensing measurement request frame. After the sensing measurement request frame is processed by the antenna, the radio frequency module, etc., the transceiver module 1302 inputs the sensing measurement request frame so that the processing module 1301 parses the sensing measurement request frame. The transceiver module 1302 can include an input / output module, etc.

[0413] The transceiver module 1302 can also be configured to receive or input the poll frame, and transmit or output the CTS-to-self frame. The processing module 1301 can be configured to parse the poll frame, and generate the CTS-to-self frame.

[0414] The transceiver module 1302 can also be configured to receive or input the sensing NDPA frame. The processing module 1301 can be configured to parse the sensing NDPA frame, and determine whether the sensing PPDU needs to be received based on the sensing NDPA frame.

[0415] The transceiver module 1302 can also be configured to receive or input the sensing probe trigger frame. The processing module 1301 can be configured to parse the sensing probe trigger frame, and determine the measurement resource of the sensing PPDU based on the sensing probe trigger frame.

[0416] The transceiver module 1302 can also be configured to receive or input the sensing PPDU, or transmit or output the sensing PPDU.

[0417] The transceiver module 1302 can also be configured to receive or input the report trigger frame, and transmit or output the report frame. The processing module 1301 can be configured to parse the report trigger frame, and generate the report frame.

[0418] In some embodiments of the application, the communication device can be configured to perform the actions performed by the ranging initiator in the above method embodiments. The transceiver module 1302 can be configured to perform the operations related to the transceiving or the input / output of the ranging initiator in the above method embodiments. The processing module 1301 can be configured to perform the operations related to the processing of the ranging initiator in the above method embodiments. Here, the TB ranging measurement interaction is taken as an example.

[0419] The transceiver module 1302 can be configured to transmit or output a ranging measurement request frame, and receive or input a ranging measurement response frame. The processing module 1301 can be configured to generate the ranging measurement request frame, and parse the ranging measurement response frame, etc.

[0420] As an example, the transceiver module 1302 can be configured to transmit a ranging measurement request frame, e.g., to a ranging response end. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0421] As another example, the transceiver module 1302 can be configured to output a ranging measurement request frame. The transceiver module 1302 can include an input / output module, etc.

[0422] The transceiver module 1302 can also be configured to receive or input a poll frame, and transmit or output a CTS-to-self frame. The processing module 1301 can be configured to parse the poll frame, and generate the CTS-to-self frame.

[0423] The transceiver module 1302 can also be configured to receive or input a ranging NDPA frame. The processing module 1301 can be configured to parse the ranging NDPA frame.

[0424] The transceiver module 1302 can also be configured to receive or input a ranging probe trigger frame. The processing module 1301 can be configured to parse the ranging probe trigger frame.

[0425] The transceiver module 1302 can also be configured to transmit or output a ranging PPDU; or, receive or input a ranging PPDU.

[0426] The transceiver module 1302 can also be configured to receive or input a report frame. The processing module 1301 can be configured to parse the report frame.

[0427] The transceiver module 1302 can also be configured to transmit or output a report frame. The processing module 1301 can be configured to generate the report frame.

[0428] The above is described by way of example for TB ranging measurement interaction. For non-TB ranging measurement interaction:

[0429] The transceiver module 1302 can be configured to transmit or output a ranging NDPA frame. The processing module 1301 can be configured to generate the ranging NDPA frame.

[0430] The transceiver module 1302 can also be configured to transmit or output a ranging PPDU, or receive or input a ranging PPDU.

[0431] The transceiver module 1302 can also be configured to receive or input the report frame. The processing module 1301 can be configured to parse the report frame.

[0432] The transceiver module 1302 can also be configured to transmit or output the report frame. The processing module 1301 can be configured to generate the report frame.

[0433] The specific description of the ranging initiator can also refer to the method embodiments shown above, which will not be listed one by one here.

[0434] Referring to FIG. 13, in some embodiments of the present application, the communication device can be configured to perform the actions performed by the ranging responder in the method embodiments above. In this case, the communication device can be the ranging device itself or a chip or functional module configured in the device. The transceiver module 1302 can be configured to perform the transceiving-related operations or the input / output-related operations of the ranging responder in the method embodiments above. The processing module 1301 can be configured to perform the processing-related operations of the ranging responder in the method embodiments above.

[0435] The transceiver module 1302 can be configured to receive or input the ranging measurement request frame and transmit or output the ranging measurement response frame. The processing module 1301 can be configured to parse the ranging measurement request frame and generate the ranging measurement response frame, etc.

[0436] As an example, the transceiver module 1302 can be configured to receive the ranging measurement request frame from the ranging initiator. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0437] As another example, the transceiver module 1302 can be configured to input the ranging measurement request frame. After the ranging measurement request frame is processed by the antenna and the radio frequency module, the ranging measurement request frame is input to the transceiver module 1302 so that the processing module 1301 can parse the ranging measurement request frame. The transceiver module 1302 can include an input / output module, etc.

[0438] The transceiver module 1302 can also be configured to transmit or output the polling frame and receive or input the CTS-to-self frame. The processing module 1301 can be configured to generate the polling frame and parse the CTS-to-self frame.

[0439] The transceiver module 1302 can also be configured to transmit or output the ranging NDPA frame. The processing module 1301 can be configured to generate the ranging NDPA frame.

[0440] The transceiver module 1302 can also be configured to transmit or output the ranging probe trigger frame. The processing module 1301 can be configured to generate the ranging probe trigger frame.

[0441] As the transceiver module 1302, it can also be configured to receive or input the ranging PPDU, or to transmit or output the ranging PPDU.

[0442] As the transceiver module 1302, it can also be configured to transmit or output the report frame. As the processing module 1301, it can be configured to generate the report frame.

[0443] As the transceiver module 1302, it can also be configured to receive or input the report frame. As the processing module 1301, it can be configured to parse the report frame.

[0444] The above is described by taking the TB ranging measurement interaction as an example. For the non-TB ranging measurement interaction:

[0445] The transceiver module 1302 can be configured to receive or input the ranging NDPA frame. The processing module 1301 can be configured to parse the ranging NDPA frame.

[0446] The transceiver module 1302 can also be configured to transmit or output the ranging PPDU, or to receive or input the ranging PPDU.

[0447] The transceiver module 1302 can also be configured to transmit or output the report frame. The processing module 1301 can be configured to generate the report frame.

[0448] The transceiver module 1302 can also be configured to receive or input the report frame. The processing module 1301 can be configured to parse the report frame.

[0449] In some embodiments of the present disclosure, the communication apparatus can be configured to perform the actions performed by the SBP initiator in the above method embodiments. The communication apparatus can be a sensing device itself or a chip or a functional module configured in the device, etc. The transceiver module 1302 can be configured to perform the transceiving-related operations or the input / output-related operations of the SBP initiator in the above method embodiments. The processing module 1301 can be configured to perform the processing-related operations of the SBP initiator in the above method embodiments.

[0450] The transceiver module 1302 can be configured to transmit or output the SBP request frame, and to receive or input the SBP response frame. As the processing module 1301, it can be configured to generate the SBP request frame, and to parse the SBP response frame, etc.

[0451] As an example, the transceiver module 1302 can be configured to transmit the SBP request frame, such as transmitting the SBP request frame to the SBP responder. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0452] As another example, the transceiver module 1302 can be configured to output the SBP request frame. The transceiver module 1302 can include an input / output module, etc.

[0453] The transceiver module 1302 can also be configured to receive or input the SBP report frame.

[0454] In some embodiments of the application, the communication apparatus can be configured to perform the actions of the SBP responding end in the above method embodiments. The communication apparatus can be a sensing device or a chip or a functional module configured in the device. The transceiver module 1302 can be configured to perform the operations related to receiving and transmitting or the operations related to input and output of the SBP responding end in the above method embodiments. The processing module 1301 can be configured to perform the operations related to processing of the SBP responding end in the above method embodiments.

[0455] The transceiver module 1302 can be configured to receive or input the SBP request frame and transmit or output the SBP response frame. The processing module 1301 can be configured to parse the SBP request frame and generate the SBP response frame, etc.

[0456] As an example, the transceiver module 1302 can be configured to receive the SBP request frame from the SBP initiating end. The transceiver module 1302 can include a radio frequency module, an antenna module, etc.

[0457] As another example, the transceiver module 1302 can be configured to input the SBP request frame. After the SBP request frame is processed by the antenna and the radio frequency module, the SBP request frame is input to the transceiver module 1302 so that the processing module 1301 can parse the SBP request frame. The transceiver module 1302 can include an input and output module, etc.

[0458] The transceiver module 1302 can also be configured to transmit or output the SBP report frame.

[0459] Optionally, in the above embodiments, the apparatus can further include a storage module. The storage module can be configured to store instructions and / or data. The processing module 1301 can read the instructions and / or data in the storage module so that the apparatus can implement the above method embodiments.

[0460] In the above embodiments, the specific descriptions of the terms or steps such as the SBP request frame, the SBP response frame, the sensing measurement request frame, the sensing measurement response frame, the NDPA frame, the probe trigger frame, the sensing PPDU or the ranging PPDU, etc. can refer to the descriptions in the above method embodiments, which will not be repeated here.

[0461] The specific descriptions of the transceiver module and the processing module in the above embodiments are only examples. The specific functions or steps of the transceiver module and the processing module can refer to the above method embodiments, which will not be repeated here.

[0462] It can be understood that the division of the modules in the above apparatus is only a logical function division, one function module can be corresponding to each function, or two or more functions can be integrated in one function module. In actual implementation, all or part of the modules can be integrated into one physical entity, or can be distributed in different physical entities. In addition, the above function modules can be implemented in the form of hardware, or in the form of software, or in the form of hardware combined with software. Whether a certain function is executed in the form of hardware or software depends on the specific application and design constraints of the technical scheme. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0463] In one example, the functional units in any of the above apparatuses can 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.

[0464] The above introduces the apparatus of the embodiments of the present application, and the following introduces the possible product form of the apparatus. Any form of product that has the functions of the apparatus described in FIG. 13 falls within the protection scope of the embodiments of the present application. The following introduction is only for example, and does not limit the product form of the apparatus of the embodiments of the present application.

[0465] In a possible implementation, in the communication apparatus shown in FIG. 13, the processing module 1301 can be one or more processors, and the transceiver module 1302 can be a transceiver, or the transceiver module 1302 can also be a sending module and a receiving module, the sending module can be a transmitter, and the receiving module can be a receiver, and the sending module and the receiving module are integrated in one device, for example, a transceiver. In the embodiment of the present application, the processor and the transceiver can be coupled, and the connection manner between the processor and the transceiver is not limited in the embodiment of the present application. In the process of executing the above method, the process about sending information in the above method can be the process that the processor outputs the above information. When the above information is output, the processor outputs the above information to the transceiver, so as to be transmitted by the transceiver. After the above information is output by the processor, the above information can also need to be processed further, and then reaches the transceiver. Similarly, the process about receiving information in the above method can be the process that the processor receives the input above information. When the processor receives the input information, the transceiver receives the above information and inputs the processor. Further, after the transceiver receives the above information, the above information can need to be processed further, and then inputs the processor.

[0466] FIG. 14 is another structural schematic diagram of the communication apparatus provided by the embodiment of the present application. As shown in FIG. 14, the communication apparatus 140 includes one or more processors 1420 and a transceiver 1410.

[0467] In some embodiments of the present application, the communication apparatus can be used to execute the steps or methods or functions executed by the sensing initiator, for example, the processor 1420 can be used to execute the functions or steps implemented by the processing module 1301 shown in FIG. 13, and the transceiver 1410 can be used to execute the functions or steps implemented by the transceiver module 1302 shown in FIG. 13. The specific description of the processor 1420 and the transceiver 1410 can refer to FIG. 13 or the method embodiments shown above, and will not be described in detail here.

[0468] In some embodiments of the present application, the communication apparatus can be used to execute the steps or methods or functions executed by the sensing initiator, for example, the processor 1420 can be used to execute the functions or steps implemented by the processing module 1301 shown in FIG. 13, and the transceiver 1410 can be used to execute the functions or steps implemented by the transceiver module 1302 shown in FIG. 13. The specific description of the processor 1420 and the transceiver 1410 can refer to FIG. 13 or the method embodiments shown above, and will not be described in detail here.

[0469] In some embodiments of the application, the communication device can be configured to perform the steps or methods or functions performed by the ranging initiator as described above, e.g., the processor 1420 can be configured to perform the functions or steps implemented by the processing module 1301 as illustrated in FIG. 13, and the transceiver 1410 can be configured to perform the functions or steps implemented by the transceiving module 1302 as illustrated in FIG. 13. For details about the processor 1420 and the transceiver 1410, reference can be made to FIG. 13 or the method embodiments described above, which will not be repeated here.

[0470] In some embodiments of the application, the communication device can be configured to perform the steps or methods or functions performed by the ranging initiator as described above, e.g., the processor 1420 can be configured to perform the functions or steps implemented by the processing module 1301 as illustrated in FIG. 13, and the transceiver 1410 can be configured to perform the functions or steps implemented by the transceiving module 1302 as illustrated in FIG. 13. For details about the processor 1420 and the transceiver 1410, reference can be made to FIG. 13 or the method embodiments described above, which will not be repeated here.

[0471] In some embodiments of the application, the communication device can be configured to perform the steps or methods or functions performed by the ranging initiator as described above, e.g., the processor 1420 can be configured to perform the functions or steps implemented by the processing module 1301 as illustrated in FIG. 13, and the transceiver 1410 can be configured to perform the functions or steps implemented by the transceiving module 1302 as illustrated in FIG. 13. For details about the processor 1420 and the transceiver 1410, reference can be made to FIG. 13 or the method embodiments described above, which will not be repeated here.

[0472] In some embodiments of the application, the communication device can be configured to perform the steps or methods or functions performed by the ranging initiator as described above, e.g., the processor 1420 can be configured to perform the functions or steps implemented by the processing module 1301 as illustrated in FIG. 13, and the transceiver 1410 can be configured to perform the functions or steps implemented by the transceiving module 1302 as illustrated in FIG. 13. For details about the processor 1420 and the transceiver 1410, reference can be made to FIG. 13 or the method embodiments described above, which will not be repeated here.

[0473] In each of the implementation forms of the device shown in FIG. 14, the transceiver can include a receiver configured to perform the functions (or operations) of receiving, and a transmitter configured to perform the functions (or operations) of transmitting. The transceiver is configured to communicate with other devices / apparatuses through transmission media.

[0474] Optionally, the communication device 140 can further include one or more memories 1430 for storing program instructions and / or data. The memory 1430 is coupled to the processor 1420. The coupling between the various means, units or modules in the embodiments of the present application can be indirect coupling or communication connection between the means, units or modules, which can be electrical, mechanical or other forms, for information interaction between the means, units or modules. The processor 1420 can operate in cooperation with the memory 1430. The processor 1420 can execute the program instructions stored in the memory 1430. Optionally, at least one of the one or more memories can be included in the processor.

[0475] The embodiments of the present application do not limit the specific connection medium between the transceiver 1410, the processor 1420 and the memory 1430. In the embodiments of the present application, the memory 1430, the processor 1420 and the transceiver 1410 are connected through the bus 1440 in FIG. 14, and the bus is represented by a thick line in FIG. 14, and the connection mode between other components is only schematically illustrated and is not limited. The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, only one thick line is used in FIG. 14, but it does not mean that there is only one bus or only one type of bus.

[0476] In the embodiments of the present application, the processor can be a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as execution completed by a hardware processor, or executed by a combination of hardware and software modules in the processor, etc.

[0477] The memory in the embodiments of the present application can include, but is not limited to, a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), a random access memory (RAM), an erasable programmable ROM (EPROM), a read-only memory (ROM), a compact disc read-only memory (CD-ROM), and the like. The memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures and can be read and / or written by a computer (such as the device shown in the present application and the like). The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0478] The processor 1420 is mainly used for processing communication protocols and communication data, and controlling the whole device, executing software programs, and processing data of the software programs. The memory 1430 is mainly used for storing software programs and data. The transceiver 1410 can include a control circuit and an antenna, and the control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input and output devices, such as touch screens, display screens, keyboards, and the like, are mainly used for receiving user input data and outputting data to users.

[0479] When the device is powered on, the processor 1420 can read the software program in the memory 1430, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 1420 performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit converts the baseband signal into a radio frequency signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1420. The processor 1420 converts the baseband signal into data and processes the data.

[0480] In another implementation, the radio frequency circuit and the antenna can be arranged independently of the processor performing baseband processing, for example, in a distributed scenario, the radio frequency circuit and the antenna can be arranged remotely from the device.

[0481] The apparatus shown in the embodiments of the present application can also have more components than those shown in FIG. 14, and the embodiments of the present application do not limit the same. The method performed by the processor and the transceiver shown above is only an example, and the steps actually performed by the processor and the transceiver can refer to the method described above.

[0482] In another possible implementation, in the apparatus shown in FIG. 13, the processing module 1301 can be one or more logic circuits, and the transceiving module 1302 can be an input / output interface, also referred to as a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiving module 1302 can also be a sending module and a receiving module, the sending module can be an output interface, and the receiving module can be an input interface, and the sending module and the receiving module are integrated into one module, for example, an input / output interface.

[0483] FIG. 15 is another structure of a communication apparatus provided by the embodiments of the present application. As shown in FIG. 15, the apparatus shown in FIG. 15 includes a logic circuit 1501 and an interface 1502. That is, the processing module 1301 can be implemented by the logic circuit 1501, and the transceiving module 1302 can be implemented by the interface 1502. The logic circuit 1501 can be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, etc., and the interface 1502 can be a communication interface, an input / output interface, a pin, or an interface circuit, etc. For example, FIG. 15 is shown by taking the above apparatus as a chip, which includes the logic circuit 1501 and the interface 1502.

[0484] In the embodiments of the present application, the logic circuit and the interface can also be coupled to each other. The embodiments of the present application do not limit the specific connection mode of the logic circuit and the interface. For example, the logic circuit 1501 can be used to perform the functions or steps implemented by the processing module 1301 shown in FIG. 13, and the interface 1502 can be used to perform the functions or steps implemented by the transceiving module 1302 shown in FIG. 13. The specific description of the logic circuit 1501 and the interface 1502 can refer to the method embodiments shown in FIG. 13 or described above, which will not be described in detail here.

[0485] The apparatus shown in the embodiments of the present application can implement the method provided by the embodiments of the present application in the form of hardware, or implement the method provided by the embodiments of the present application in the form of software, etc., and the embodiments of the present application do not limit the same.

[0486] The embodiments of the present application also provide a communication system, which includes a sensing initiator and a sensing responder, and the sensing initiator and the sensing responder can be used to perform the method in any of the preceding embodiments.

[0487] The embodiments of the present application further provide a communication system, which comprises a ranging initiator and a ranging responder, and the ranging initiator and the ranging responder can be used to perform the method in any of the foregoing embodiments.

[0488] The embodiments of the present application further provide a communication system, which comprises an SBP initiator and an SBP responder, and the SBP initiator and the SBP responder can be used to perform the method in any of the foregoing embodiments.

[0489] In addition, the present application further provides a computer program for implementing the operations and / or processes performed by various devices in the method provided by the present application.

[0490] The present application further provides a computer readable storage medium, which stores computer code, when the computer code is run on a computer, the computer code causes the computer to perform the operations and / or processes performed by various devices in the method provided by the present application.

[0491] The present application further provides a computer program product, which comprises computer code or a computer program, when the computer code or the computer program is run on a computer, the operations and / or processes performed by various devices in the method provided by the present application are performed.

[0492] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there can be another division way in actual implementation, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed mutual ones can be indirect coupling or communication connection through some interfaces, devices or modules, and can also be electrical, mechanical or other forms of connection.

[0493] The modules described as separate components can or can not be physically separate, and the components shown as modules can or can not be physical modules, that is, they can be located in one place, or can be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the technical effects of the scheme provided by the embodiments of the present application.

[0494] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically, or two or more modules can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module.

[0495] The integrated module, if implemented in the form of a software function module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or say the part of the prior art that contributes to the present application, or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a readable storage medium, including a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned readable storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0496] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: The initiator sends a measurement request frame, the measurement request frame being used to initiate a measurement session, the measurement request frame comprising a hybrid sounding mode field, the hybrid sounding mode field being used to indicate a measurement mode of the measurement session; The method comprises:

2. A communication method characterized by comprising: The responder receives a measurement request frame, the measurement request frame being used to initiate a measurement session, the measurement request frame comprising a hybrid sounding mode field, the hybrid sounding mode field being used to indicate a measurement mode of the measurement session; The method comprises: When the value of the hybrid sounding mode field is a first value, the first value indicates that a physical layer convergence procedure protocol data unit (PPDU) in a polling phase of the measurement session, a null data packet announcement (NDPA) frame in an NDPA sounding phase of the measurement session, and a PPDU in a reporting phase of the measurement session are transmitted in a first frequency band.

3. The method according to claim 1 or 2, characterized in that, When the value of the hybrid sounding mode field is a second value, the second value indicates that the PPDU in the polling phase of the measurement session and the NDPA frame in the NDPA sounding phase of the measurement session are transmitted in the first frequency band.

4. The method according to any one of claims 1 to 3, characterized in that, When the value of the hybrid sounding mode field is a third value, the third value indicates that the PPDU in the polling phase of the measurement session is transmitted in the first frequency band.

5. The method according to any one of claims 1 to 4, characterized in that, The measurement request frame further comprises one or more link identification fields, each link identification field being used to indicate a link corresponding to the measurement session.

6. The method according to any one of claims 1 to 5, characterized in that, The measurement request frame further comprises a transmission beam list or a reception beam list, the transmission beam list being used to indicate an index of a transmission beam used by the responder or the initiator in the measurement session, and the reception beam list being used to indicate an index of a reception beam used by the responder or the initiator in the measurement session.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises:

8. The method of claim 1, wherein, The initiator sends a sensing null data packet announcement (NDPA) frame, the sensing NDPA frame comprising a beam indication field, the beam indication field being used to indicate an index of a transmission beam or an index of a reception beam, the transmission beam being a beam used by the initiator to transmit a sensing PPDU, and the reception beam being a beam used by the initiator to receive a sensing PPDU, the sensing PPDU being a PPDU used for sensing. The method further comprises:

9. The method of claim 2, wherein, The responder receives a sensing null data packet announcement (NDPA) frame, the sensing NDPA frame comprising a beam indication field, the beam indication field being used to indicate an index of a transmission beam or an index of a reception beam, the transmission beam being a beam used by the initiator to transmit a sensing PPDU, and the reception beam being a beam used by the initiator to receive a sensing PPDU, the sensing PPDU being a PPDU used for sensing. The sensing NDPA frame further comprises a switching field, the switching field being used to indicate whether the initiator performs frequency band switching after sending the sensing NDPA frame.

10. The method according to claim 8 or 9, characterized in that, The sensing NDPA frame further comprises a count field, the count field being used to indicate a number of sensing NDPA frames to be sent by the initiator.

11. The method according to any one of claims 8-10, characterized in that, The method further comprises:

12. The method of claim 1, wherein, ​ The initiator transmits a probe trigger frame, the probe trigger frame comprising a beam indication field, the beam indication field being used to transmit an index of a transmit beam, the transmit beam being a beam used for the responder to transmit a sensing PPDU, the sensing PPDU being a PPDU used for sensing.

13. The method of claim 2, wherein, The method further comprises: The responder receives a probe trigger frame, the probe trigger frame comprising a beam indication field, the beam indication field being used to indicate an index of a transmit beam, the transmit beam being a beam used for the responder to transmit a sensing PPDU, the sensing PPDU being a PPDU used for sensing.

14. A communications device, characterized by A module for performing the method of any of claims 1-13.

15. A communications device, characterized by A processor for performing the method of any of claims 1-13.

16. The apparatus of claim 15, wherein, The communication device further comprises a transceiver for transmitting or receiving information.

17. A communications device, characterized by A logic circuit and an interface are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method of any of claims 1-13.

18. A computer-readable storage medium, characterized in that, The computer readable storage medium is used to store a computer program, the computer program being executed to perform the method of any of claims 1-13.

19. A computer program product, characterised in that, The computer program product is executed to perform the method of any of claims 1-13.

20. A communication system, characterized by The communication device further comprises a transceiver for transmitting or receiving information. A logic circuit and an interface are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method of any of claims 1-13. The computer readable storage medium is used to store a computer program, the computer program being executed to perform the method of any of claims 1-13. The computer program product is executed to perform the method of any of claims 1-13. The communication device further comprises a transceiver for transmitting or receiving information. A logic circuit and an interface are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method of any of claims 1-13. The computer readable storage medium is used to store a computer program, the computer program being executed to perform the method of any of claims 1-13. The computer program product is executed to perform the method of any of claims 1-13. An initiator and a responder, the initiator being configured to perform the method of any of claims 1, 3-8, 10-12, and the responder being configured to perform the method of any of claims 2-7, 9-11, 13.

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