Clutter information management method, and storage medium, electronic apparatus and computer program product

Abstract

Provided in the embodiments of the present disclosure are a clutter information management method, and a storage medium, an electronic apparatus and a computer program product. The method comprises: sending a clutter measurement request to a first device; and receiving from the first device a measurement report that carries clutter information.

Description

Clutter information management methods, storage media, electronic devices and computer program products

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 2025104862547, filed on April 17, 2025, entitled “Clutter Information Management Method, Storage Medium, Electronic Device and Computer Program Product”, and incorporates the entire contents of that patent application by reference. Technical Field

[0003] This disclosure relates to the field of communications, and more specifically, to a clutter information management method, storage medium, electronic device, and computer program product. Background Technology

[0004] In Integrated Sensing and Communication (ISAC) systems, target detection and localization are among their core functions. When an ISAC system performs sensing tasks, the reflected signals (echoes) of targets provide crucial information, enabling the system to identify and locate these targets. However, non-target objects in the sensing environment, such as stationary ground features, buildings, or moving, unrelated objects, also generate echoes; these non-target echoes are commonly referred to as clutter. The presence of clutter significantly interferes with target detection, leading to unnecessary false alarms—that is, the system incorrectly identifying non-target objects as targets.

[0005] Clutter suppression is a crucial aspect of radar signal processing, aiming to distinguish and suppress clutter based on the differences in statistical characteristics between target echoes and clutter. Specifically, moving target clutter and ground object clutter differ significantly in their spectral characteristics, primarily in their Doppler center frequencies. Utilizing these differences, the ISAC system can employ frequency domain processing techniques, such as Moving Target Indication (MTI) or Moving Target Detection (MTD) filtering, to effectively eliminate clutter interference.

[0006] However, current ISAC systems typically only possess radar signal processing capabilities, and in complex clutter environments, relying solely on static signal processing strategies often fails to achieve optimal sensing performance. This is because the clutter environment changes over time, and traditional clutter suppression methods may not be able to adapt to these changes, leading to a degradation in the performance of sensing nodes.

[0007] There is no good solution to the above problems in the relevant technologies. Summary of the Invention

[0008] This disclosure provides a clutter information management method, a storage medium, an electronic device, and a computer program product.

[0009] According to one embodiment of this disclosure, a clutter information management method is provided, applied to a sensing function network element, the method comprising: sending a clutter measurement request to a first device; and receiving a measurement report carrying clutter information from the first device.

[0010] According to yet another embodiment of this disclosure, a computer-readable storage medium is also provided, which stores a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0011] According to yet another embodiment of this disclosure, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in any of the above method embodiments.

[0012] According to yet another embodiment of this disclosure, a computer program product is also provided, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments. Attached Figure Description

[0013] Figure 1 is a flowchart of a clutter information management method according to an embodiment of the present disclosure;

[0014] Figure 2 is a schematic diagram of the basic measurement process according to an embodiment of the present disclosure;

[0015] Figure 3 is a schematic flowchart of a sensing task according to an embodiment of the present disclosure;

[0016] Figure 4 is a schematic diagram of the BS self-transmitting and self-receiving clutter measurement process according to an embodiment of the present disclosure;

[0017] Figure 5 is a schematic diagram of the clutter measurement process of BS A transmit and B receive according to an embodiment of the present disclosure;

[0018] Figure 6 is a schematic diagram of the BS and UE collaborative clutter measurement process according to an embodiment of the present disclosure;

[0019] Figure 7 is a schematic diagram of the clutter information update process according to an embodiment of the present disclosure;

[0020] Figure 8 is a schematic flowchart of the BS / UE application clutter information detection according to an embodiment of the present disclosure;

[0021] Figure 9 is a schematic flowchart (I) of clutter information as auxiliary information transmission according to an embodiment of the present disclosure;

[0022] Figure 10 is a schematic diagram (II) of the process of transmitting clutter information as auxiliary information according to an embodiment of the present disclosure;

[0023] Figure 11 is a schematic diagram of the process of transmitting clutter information as periodic auxiliary information according to an embodiment of the present disclosure;

[0024] Figure 12 is a schematic diagram of the update process of transmitting clutter information as periodic auxiliary information according to an embodiment of the present disclosure;

[0025] Figure 13 is a schematic flowchart of clutter-assisted information control and feedback according to an embodiment of the present disclosure;

[0026] Figure 14 is a structural block diagram of a clutter information management device according to an embodiment of the present disclosure. Detailed Implementation

[0027] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings and examples.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] This disclosure provides a clutter information management method for a sensing function (SF) network element. Figure 1 is a flowchart of the clutter information management method according to an embodiment of this disclosure. As shown in Figure 1, the process includes the following steps:

[0030] Step S102: Send a clutter measurement request to the first device;

[0031] Step S104: Receive a measurement report carrying clutter information from the first device.

[0032] Through the above steps, real-time measurement and recording of clutter information can be achieved, enabling timely analysis of clutter information and adjustment of the characteristics of the processing system and the whole machine to adapt to the time-varying clutter environment, improve the efficiency and accuracy of the sensing system, and thus solve the problem in related technologies where clutter generated by non-target objects can cause false alarms and affect the accuracy of target detection and estimation when the ISAC system performs sensing tasks.

[0033] In this embodiment, the first device may include user equipment (UE) and / or base station (BS). The UE may include mobile terminal, Internet of Things device, etc., and the BS may include next generation radio access network node (NG-RAN node), gNB (5G Node B), transmit receive point (TRP), etc., and this disclosure is not limited to these.

[0034] In this embodiment, clutter refers to non-target echo signals received during sensing. Clutter can originate from ground objects, water surfaces, the atmosphere, electromagnetic interference, etc. Clutter information includes statistical characteristics of clutter in one or more dimensions within a specified range, such as at least one or a combination of at least two of the following: spatial domain, Doppler domain, amplitude, phase, and power.

[0035] In some embodiments, a clutter measurement request may include one of the following:

[0036] 1) Dedicated signaling carrying clutter measurement configuration;

[0037] 2) A sensing request carrying a clutter measurement indication, wherein the clutter measurement indication is used to instruct the first device to perform clutter measurement while performing environmental sensing, and the clutter measurement configuration is pre-configured information or multiplexed sensing measurement configuration;

[0038] 3) A sensing request carrying the clutter measurement configuration.

[0039] In this embodiment, the clutter measurement request can be a newly designed dedicated signaling or a reused sensing request from the prior art. When reusing a sensing request, to save signaling overhead, only the clutter measurement indication can be carried in the sensing request; this field can be a reserved field or a newly added field. Using dedicated signaling or a sensing request carrying clutter measurement configuration allows for precise control of clutter measurement and better adapts to complex changes in the communication environment.

[0040] In some embodiments, the measurement report may also include one of the following: a dedicated measurement report carrying the clutter information (e.g., a clutter measurement report); or a sensing measurement report carrying the clutter information (reusing an existing sensing measurement report).

[0041] In some embodiments, the clutter measurement configuration may include at least one of the following: spatial range of clutter, Doppler range of clutter, intensity range of clutter, resolution of clutter cells, format of clutter information reporting, and period of clutter information reporting.

[0042] In this embodiment, clutter information includes statistical characteristics of clutter in one or more dimensions within a specified range, such as at least one or a combination of at least two of spatial domain, Doppler domain, amplitude, phase, and power. Clutter measurement involves dividing the specified range into multiple clutter cells and performing measurements and characteristic statistics on each clutter cell. For example, if it is necessary to measure the statistical characteristics of the spatial dimension, the spatial range of the clutter can be set; if it is necessary to measure the statistical characteristics of the Doppler dimension, the Doppler range of the clutter can be set. The resolution of the clutter cell is related to the size of a single clutter cell and also affects the accuracy of the clutter measurement. The format and period of clutter information reporting affect the signaling overhead and the timeliness of the clutter information. The above clutter measurement configurations can be dynamically adjusted according to the sensing task, measurement environment, etc., thereby improving sensing accuracy.

[0043] In some embodiments, the clutter information reporting format includes one of the following: statistical characteristic values ​​of each clutter cell within a specified range, clutter cell index with clutter present and corresponding statistical characteristic values ​​of the clutter cell, and clutter cell index with clutter present.

[0044] In some embodiments, the clutter element partitioning method includes spatial partitioning and / or Doppler domain partitioning. For example, a specified spatial range and / or Doppler range can be divided into a corresponding number of clutter elements according to the resolution of the clutter elements.

[0045] In one exemplary embodiment, the spatial partitioning method for clutter cells includes two methods:

[0046] 1) Polar coordinates: This method divides clutter cells according to angle and distance. The resulting grid cells are larger when far away and smaller when near, and the results vary between different observation points. This method is suitable for use by a single ISAC node.

[0047] 2) Cartesian coordinates: Clutter cells are divided according to the xy-axis or xyz-axis. This method produces uniform grid points and supports a unified coordinate system. This division method is suitable for multiple ISAC nodes to share.

[0048] In an exemplary embodiment, based on the clutter space partitioning in polar and Cartesian coordinates, clutter units can be further partitioned according to different Doppler frequencies. In this case, a clutter unit is equivalent to angle-range-Doppler or xyz-axis-Doppler. The advantage of this is that it reflects the Doppler characteristics of clutter, thus allowing for the separation of the target and clutter zones using Doppler information during target detection. Furthermore, a range-Doppler clutter unit partitioning method can also be used, which allows for integration with range-Doppler domain detection.

[0049] In some embodiments, the type of clutter information includes one of the following: clutter map, clutter profile map, or mixed clutter map.

[0050] In one exemplary embodiment, the clutter map can provide characteristic statistics (such as clutter power) for each clutter cell, and may also provide the clutter distribution type and distribution-related parameters. The clutter map helps in the appropriate selection of thresholds during target detection. The clutter profile map can use 0 / 1 to represent the presence of clutter in each clutter cell.

[0051] In this embodiment, clutter information can be actual measured values ​​of the statistical characteristics of one or more dimensions of the clutter unit, such as signal strength, amplitude, phase, and power. This approach can obtain more accurate clutter information, facilitating in-depth data analysis and management, and ultimately leading to more accurate sensing measurement results.

[0052] In one exemplary embodiment, the clutter profile map serves to detect clutter at 0 using a noise-related threshold, and at 1 using MTI / Constant False Alarm Rate (CFAR) / clutter map, or not to detect clutter at all.

[0053] In this embodiment, clutter information can also be an indication value indicating whether clutter exists in a clutter unit, such as 0 / 1. For example, a clutter threshold can be set, and the presence of clutter in each clutter unit can be determined by comparing statistical characteristics with the clutter threshold. This approach can save signaling overhead and reduce the amount of data in the measurement report.

[0054] In an exemplary embodiment, the hybrid clutter map can integrate the two forms mentioned above into a single clutter map. Here, a clutter threshold of 0 or some other specific value indicates the absence of clutter, while a clutter statistical value of the maximum value or some other specific value indicates extremely high clutter, which is then not detected.

[0055] In some embodiments, the clutter measurement request also carries a sensing signal configuration recommended by the sensing function network element. For example, the sensing signal configuration may include sensing reference signal parameters (e.g., reference signal sequence related parameters, reference signal sequence type, etc.) and sensing resource configuration (e.g., resource time-frequency location, resource start subcarrier, resource bandwidth, resource symbol, whether to comb, comb size, comb offset / index, etc.).

[0056] In some embodiments, after sending a clutter measurement request to the first device in step S102, the method may further include: receiving a clutter measurement response from the first device, wherein the clutter measurement response carries the sensing signal configuration actually used by the first device.

[0057] In this embodiment, the sensing signal configuration carried in the clutter measurement request is only a recommendation. The first device can determine the actual sensing signal configuration to be used according to the environmental conditions and inform the SF through the clutter measurement response, so that the SF can achieve more accurate analysis and processing of clutter information / sensing information.

[0058] In some embodiments, the method may further include: receiving clutter sensing capability information or sensing capability information from the first device.

[0059] In some embodiments, clutter sensing capability information or sensing capability information includes at least one of the following: supported sensing modes, supported terminal roles, signal transmission capability, signal reception capability, resource configuration capability, processing capability, reporting capability, hardware capability, clutter sensing measurement range or sensing measurement range, clutter sensing measurement accuracy or sensing measurement accuracy, and clutter sensing measurement resolution or sensing measurement resolution.

[0060] In this embodiment, clutter sensing capability can be indicated by independent parameters or by reusing relevant parameters of the sensing capability. By reporting its own sensing capability / clutter sensing capability to the SF, the first device can enable the SF to select appropriate configuration parameters (clutter measurement configuration or sensing measurement configuration) for the first device, thereby ensuring the achievement of the measurement task.

[0061] In some embodiments, in response to a sensing mode of self-transmitting and self-receiving, the first device is configured to transmit a measurement signal, receive the echo of the measurement signal, and perform clutter measurement.

[0062] In some embodiments, in response to a sensing mode of A transmit B receive, the first device includes a transmitting device and a receiving device, wherein the transmitting device is used to transmit a measurement signal; and the receiving device is used to receive the echo of the measurement signal and perform clutter measurement.

[0063] In this embodiment, the sensing modes include a self-transmitting and self-receiving mode and an A-transmitting and B-receiving mode. In the self-transmitting and self-receiving mode, a single first device is required to simultaneously perform both signal transmission and reception. This configuration simplifies the clutter measurement process, reduces coordination costs between devices, and improves measurement efficiency. In the A-transmitting and B-receiving mode, two independent devices are required to collaboratively complete the sensing task. This configuration can cover a larger spatial range and improve measurement accuracy and reliability.

[0064] In some embodiments, in the A transmit B receive mode, step S102, sending a clutter measurement request to the first device, may include:

[0065] Step S102A: Send a measurement signal transmission request carrying the recommended sensing signal configuration to the transmitting device;

[0066] Step S102B: Send a receive measurement processing request carrying clutter measurement configuration to the receiving device;

[0067] The clutter measurement request includes the measurement signal transmission request and the receiving measurement processing request.

[0068] This disclosure does not restrict the execution order of steps S102A and S102B; they can be executed separately or simultaneously. Specific details regarding the sensing signal configuration and clutter measurement configuration can be found in the relevant descriptions in the preceding embodiments, and will not be repeated here.

[0069] In some embodiments, in step S102A, the SF may also receive a response message from the transmitting device for a measurement signal transmission request, and the response message may carry the actual sensing signal configuration used by the transmitting device.

[0070] In some embodiments, in the A transmit B receive mode, step S104 receiving a measurement report carrying clutter information from the first device may include: receiving a measurement report carrying clutter information from the receiving device.

[0071] In one exemplary embodiment, both the transmitting device and the receiving device may be BS; or both the transmitting device and the receiving device may be UE; or either the transmitting device or the receiving device may be BS and the other may be UE.

[0072] In an exemplary embodiment, in the A-transmit B-receive mode, sensing functions of A-transmit B-receive and B-transmit A-receive can be implemented simultaneously. For example, device A can act as a transmitter to transmit a measurement signal to device B, which acts as a receiver. Simultaneously, device A can also act as a receiver to receive the measurement signal transmitted by device B when it acts as a transmitter. In this case, SF can receive the clutter information measured by devices A and B respectively, and devices A and B can each send a measurement report carrying the clutter information. Devices A and B can use the same or different sensing signal configurations and clutter measurement configurations; this disclosure does not impose any limitations on this.

[0073] In some embodiments, the method may further include at least one of the following: sending a clutter information update request to the first device; receiving clutter update information from the first device, wherein the clutter update information is incremental information or full information of the clutter information.

[0074] In this embodiment, the update of clutter information can be actively triggered by the first device or passively triggered based on a clutter information update request sent by SF. The triggering of clutter information updates can be periodic or triggered by a specified event; these update mechanisms can improve the timeliness and accuracy of clutter information. For example, clutter information triggering events can include environmental changes, changes in communication requirements, changes in sensing tasks, etc.

[0075] In this embodiment, the incremental information of clutter information only includes clutter information that has changed compared to the previously reported clutter information, while the full information of clutter information includes all clutter information required by SF (regardless of whether changes are transmitted).

[0076] In some embodiments, the clutter information update request reuses the clutter measurement configuration in the clutter measurement request, or the clutter information update request carries a new clutter measurement configuration. In this embodiment, the clutter information update request can be used only to instruct the first device to report clutter update information, which is suitable for scenarios where the clutter measurement configuration does not need to be adjusted frequently, and can reduce signaling overhead. Furthermore, the clutter information update request can also carry only the changed clutter measurement configuration.

[0077] In some embodiments, the method may further include the following steps:

[0078] Step S106: Send target clutter information related to the target perception task to the second device;

[0079] Step S108: Receive the perception result of the target perception task from the second device.

[0080] In this embodiment, the second device can perform a target sensing task based on target clutter information. For example, it can filter the original sensing results based on the target clutter information and then report the filtered sensing results to SF, or...

[0081] In this embodiment, the second device is used to perform the target perception task. The second device can be the same as or a different device from the first device. Target clutter information can help the second device better understand and adapt to the current wireless communication environment, thereby improving the efficiency and accuracy of the target perception task.

[0082] In some embodiments, before sending target clutter information related to the target sensing task to the second device in step S106, the method may further include: receiving a clutter information request from the second device, wherein the clutter information request carries description information of the target sensing task and / or clutter configuration related to the target sensing task.

[0083] In this embodiment, SF can filter out target clutter information from all the collected clutter information (e.g., clutter information collected from multiple first devices) according to clutter information requests, thereby accurately providing the second device with the clutter information required for the target perception task and improving perception accuracy.

[0084] In some embodiments, clutter configuration may include at least one of the following: spatial range of clutter, Doppler range of clutter, intensity range of clutter, resolution of clutter cells, format of clutter information, update period of clutter information, validity period of clutter information, and environmental conditions.

[0085] In some embodiments, the method further includes one of the following:

[0086] Periodically send target clutter update information to the second device;

[0087] In response to the time when the last transmission of the target clutter information or the target clutter update information exceeds the validity period of the clutter information, the target clutter update information is sent to the second device.

[0088] In response to environmental changes or changes in the target perception task, the target clutter update information is sent to the second device.

[0089] In this embodiment, the target clutter information required by the second device to perform the target perception task can also be updated periodically or triggered by a specific event. The second device updates the target clutter information in real time, ensuring the timeliness of the clutter information and improving the accuracy and efficiency of the perception task. For example, the target clutter update information can be full information or incremental information, and this disclosure does not limit it.

[0090] In some embodiments, the method may further include: sending a message providing auxiliary information to a third device, wherein the message providing auxiliary information carries an information element (IE) related to the clutter information.

[0091] In this embodiment, the auxiliary information message is used to transmit auxiliary information. Clutter information can also be transmitted as a new type of auxiliary information. Therefore, the auxiliary information message in this disclosure includes clutter auxiliary information. Furthermore, the auxiliary information message may also include other auxiliary information, and this disclosure does not limit this. The third device may be the same as the first device and / or the second device, or it may be different from both the first and second devices. Clutter auxiliary information can help the third device improve system performance, efficiency, or accuracy.

[0092] In some embodiments, the information elements associated with the clutter information include at least one of the following:

[0093] Clutter measurement information, including clutter measurement time, clutter measurement conditions, or information related to measurement nodes;

[0094] The clutter information requested by the third device;

[0095] Clutter error messages indicate the situation and cause of clutter information errors or failures.

[0096] In some embodiments, the message providing assistance information also carries at least one of the following:

[0097] A transaction identifier is used to indicate whether the auxiliary information message belongs to a control transaction or a data transaction.

[0098] Periodic session identifier;

[0099] Control parameters;

[0100] Periodic auxiliary information;

[0101] Non-periodic auxiliary information;

[0102] An end-of-transaction indication is used to indicate the end of the current transaction when the transmission of the periodic auxiliary information reaches its duration or a termination condition.

[0103] Update capability indicator, used to indicate the update capability of the third device.

[0104] In an exemplary embodiment, if the auxiliary information is periodic auxiliary information, the last auxiliary information message sent by the SF to the third device may carry an end-of-transaction indication.

[0105] In some embodiments, the method may further include: receiving an auxiliary information request sent by the third device, wherein the auxiliary information request carries information elements related to the clutter measurement request.

[0106] In some embodiments, the information elements associated with the clutter measurement request include at least one of the following:

[0107] The clutter-CommonAssistDataReq is used to request clutter information measured by any node.

[0108] The clutter-generic-assisted-data-request is used to request clutter information measured at a specified node.

[0109] Clutter period auxiliary data request, used to indicate the desired clutter information transmission period and the duration of the termination period transmission;

[0110] The public information element requests auxiliary data to indicate changes in clutter measurements.

[0111] In some embodiments, the auxiliary information request further carries at least one of the following: a transaction identifier, used to indicate the control transaction or data transaction to which the auxiliary information request belongs; a periodic session identifier; control parameters; and an auxiliary information type, wherein the auxiliary information type is used to indicate whether the auxiliary information is periodic or non-periodic.

[0112] In some embodiments, the method further includes: receiving a termination message from the third device; or sending the termination message to the third device; wherein the termination message carries a transaction identifier to indicate that the corresponding transaction is terminated early.

[0113] In this embodiment, in addition to carrying an end transaction indication in the last auxiliary information message, a specified transaction can also be terminated in advance by a termination message. Event termination can be initiated by the SF or a third device.

[0114] In some embodiments, the method further includes: sending a control message related to the provision of assistance information message to a fourth device, so that the fourth device broadcasts the provision of assistance information message according to the control message; and receiving a feedback message related to the provision of assistance information message from the fourth device.

[0115] In this embodiment, the fourth device can be a BS (Browser / Base Station), and the fourth device can be the same as or different from the first device, the second device, and / or the third device. In this embodiment, the feedback message is feedback information for broadcasting clutter assistance information (i.e., providing assistance information messages).

[0116] In this embodiment, the auxiliary information message carries information elements related to the clutter information. For example, it may include at least one of the following: clutter measurement information, including clutter measurement time, clutter measurement conditions, or measurement node related information; clutter information requested by the third device; and clutter error information, indicating the situation and reason for clutter information errors or failures.

[0117] Through the embodiments of this disclosure, SF can realize the measurement and control of clutter information, and can collect and manage clutter information, providing clutter information to nodes performing sensing tasks to assist in the relevant sensing process, or providing clutter information to designated nodes as auxiliary information required for transmission, so that the entire ISAC system can grasp the clutter interference situation in the communication environment in real time, improve the accuracy and efficiency of sensing, and thus solve the problem in related technologies that when ISAC systems perform sensing tasks, clutter generated by non-target objects will cause false alarms, affecting the accuracy of target detection and estimation.

[0118] In this embodiment of the disclosure, a network node with clutter management function can collect clutter information through clutter-specific signaling, or it can collect clutter information while performing other sensing tasks.

[0119] Example 1: Basic Measurement Procedure.

[0120] This embodiment describes the collection of clutter information using clutter-specific signaling. This can be used to establish an initial clutter map when an ISAC base station is first deployed, or to rebuild a clutter map if it fails. The specific format of the clutter information mentioned in this embodiment can also be applied to other embodiments.

[0121] Figure 2 is a schematic diagram of the basic measurement process according to an embodiment of the present disclosure. As shown in Figure 2, the process includes the interaction between SF and BS / UE, and specifically includes the following steps:

[0122] In step S201, the SF sends a clutter measurement request to the BS / UE.

[0123] The key to a clutter measurement request is that it carries a clutter measurement configuration, which includes at least one of the following: the spatial range of clutter, the Doppler range of clutter, the intensity range of clutter, the resolution of clutter cells, the format of clutter information reporting, and / or, the period of clutter information reporting.

[0124] In step S202, the BS / UE performs clutter measurement and feeds back clutter information to the SF.

[0125] Clutter measurement requests can specify either a single measurement or periodic measurements. The advantage of periodic measurements is that energy can be accumulated to reduce measurement errors, while also allowing for better detection of clutter variations.

[0126] The type of clutter information requested for measurement can be a clutter map, a clutter profile map, or a combination of both, as defined below:

[0127] 1) Clutter Plot: Provides clutter power statistics for each clutter cell, and may also provide the clutter distribution type and related parameters. Its purpose is to help select appropriate thresholds during target detection.

[0128] 2) Clutter Profile Map: Each clutter cell is represented by 0 or 1 to indicate the presence of clutter. Its function is to use a noise-related threshold for detection at clutter levels of 0, and to use an MTI / CFAR / clutter map for detection at clutter levels of 1, or to perform no detection at all.

[0129] 3) Hybrid Clutter Map: These two forms can also be integrated into a single clutter map. A clutter threshold of 0 or some other specific value indicates the absence of clutter. A clutter statistical value of the maximum value or some other specific value indicates extremely high clutter, which is then ignored.

[0130] The reporting format for different types of clutter information can be the value of each clutter resolution cell. This approach can completely represent clutter information, but the disadvantage is that it has a large overhead. In order to reduce the overhead of clutter information reporting, when the number of cells occupied by clutter is small, clutter maps or mixed clutter maps can be represented by clutter cell indices with carriers and the clutter intensity of the corresponding clutter cells, and clutter profile maps can be represented by clutter cell indices with carriers.

[0131] The division of clutter units includes spatial division and Doppler domain division, or a combination of both.

[0132] There are two methods for spatial partitioning of clutter cells:

[0133] 1) Polar coordinates: This method divides clutter cells according to angle and distance. The resulting grid cells are larger when far away and smaller when near, and the results vary between different observation points. This method is suitable for use by a single ISAC node.

[0134] 2) Cartesian coordinates: Clutter cells are divided according to the xy-axis or xyz-axis. This method produces uniform grid points and supports a unified coordinate system. This division method is suitable for multiple ISAC nodes to share.

[0135] Building upon the clutter space partitioning in polar and Cartesian coordinates, clutter units can be further subdivided according to different Doppler frequencies. This is equivalent to a single clutter unit being either angle-range-Doppler or xyz-axis-Doppler. The advantage of this approach is that it reflects the Doppler characteristics of clutter, allowing for the separation of targets and clutter zones using Doppler information during target detection. Furthermore, a range-Doppler clutter unit partitioning method can be used, which allows for integration with range-Doppler domain detection.

[0136] The clutter information intensity related values ​​(i.e., clutter values) can be expressed using the Radar Cross Section (RCS), RCS per unit area, or RCS per unit volume, applicable to point clutter, area clutter, and volume clutter, respectively. Depending on the characteristics of the environment, only one clutter type can be used for unification and simplification. Alternatively, the clutter type and corresponding clutter value can be indicated on different clutter cells. Due to the extremely large dynamic range of clutter statistics, one or a combination of the following methods can be used to ensure effective quantization: (1) logarithmic counting or dB values; (2) different quantization granularities for different clutter regions, while providing the quantization granularity; (3) non-uniform quantization based on statistical distribution characteristics.

[0137] Example 2: Sensing tasks simultaneously perform clutter measurements.

[0138] In this embodiment, clutter measurement is performed simultaneously during a sensing task.

[0139] Figure 3 is a schematic flowchart of clutter measurement in a sensing task according to an embodiment of the present disclosure. As shown in Figure 3, the process includes the interaction between the SF and BS / UE, and specifically includes the following steps:

[0140] In step S301, the SF simultaneously sends a perception request to the BS / UE.

[0141] The sensing request includes a clutter measurement indication or a clutter measurement configuration. The clutter measurement indication can be a 1-bit information indicating whether clutter measurement is performed simultaneously. The clutter measurement configuration can individually indicate the spatial range of the clutter, the Doppler range of the clutter, the intensity range of the clutter, the resolution of the clutter cell, the format of the clutter information report, and / or the period of the clutter information report. The clutter measurement configuration can also reuse information such as spatial range, Doppler range, intensity range, resolution, reporting format, and / or reporting period from the sensing measurement.

[0142] In step S302, the BS / UE performs clutter sensing measurements and feeds back the sensing information to the SF.

[0143] The sensing information includes clutter information. When the formats of the sensing information and clutter information are consistent, only one sensing information report can be fed back, simultaneously reflecting the measurement results of both the sensing target and the clutter. SF can separate the target and clutter based on their statistical characteristics and store the valid clutter information.

[0144] Example 3: BS self-transmitting and self-receiving clutter measurement process.

[0145] This embodiment describes an interaction method between SF and BS. This method can be used for clutter measurement in base station self-transmitting and self-receiving operations.

[0146] Figure 4 is a schematic diagram of the clutter measurement process of the BS self-transmitting and self-receiving according to an embodiment of the present disclosure. As shown in Figure 4, the process includes the interaction between the SF and the BS, and specifically includes the following steps:

[0147] Step S401: The BS reports to the SF the clutter sensing capability information or sensing capability information (i.e., BS capability) supported by the BS.

[0148] The clutter sensing capability information or sensing capability information may include at least one of the following:

[0149] 1) Supported sensing modes, such as BS self-transmitting and self-receiving mode, BS A-transmitting and B-receiving mode, UE-transmitting and BS-receiving mode, BS-transmitting and UE-receiving mode, UE self-transmitting and self-receiving (within coverage), and UE A-transmitting and B-receiving (within coverage).

[0150] 2) BS capabilities corresponding to different perception modes, including: the ability to "transmit" and "receive" in the BS self-transmitting and self-receiving mode; the ability to "transmit" and "receive" in the BS A-transmitting and B-receiving mode; the ability of the BS to "receive" in the UE-transmitting and BS-receiving mode; the ability of the BS to "transmit" in the BS-transmitting and UE-receiving mode; and the resource configuration capabilities in UE self-transmitting and self-receiving (within coverage) and UE A-transmitting and B-receiving (within coverage).

[0151] 3) Clutter sensing measurement range / accuracy / resolution or sensing measurement range / accuracy / resolution for each supported sensing mode, such as spatial range / accuracy / resolution, distance range / accuracy / resolution, angular range / accuracy / resolution, Doppler range / accuracy / resolution, etc.

[0152] 4) BS processing capability (for each supported sensing mode): Supported processing methods or algorithms, such as supported sensing measurement parameters, whether clutter measurement is supported, maximum amount of data to be processed, and whether super-resolution algorithms are supported.

[0153] 5) BS reporting capability (for each supported perception mode): Supports reporting information format, frequency, data volume, etc.

[0154] 6) BS hardware capabilities: number of antennas, maximum transmit power, maximum supported bandwidth, etc.

[0155] In step S402, the SF sends a clutter measurement request to the BS, which includes the spatial range of the clutter, the Doppler range of the clutter, the intensity range of the clutter, the resolution of the clutter cells, the format of the clutter information reporting, and / or the period of the clutter information reporting. The resolution of the clutter cells can be greater than the receiving resolution; this allows for averaging of clutter information across multiple receiving cells. The clutter measurement request may further include a recommended sensing signal configuration, which can originate from the SF itself or from the BS. The recommended sensing signal configuration can be a single configuration or a collection of multiple configurations. The latter allows the base station to select from multiple configurations. The sensing signal configuration includes sensing reference signal parameters and sensing resource configuration.

[0156] In step S403, BS sends a clutter measurement response to SF.

[0157] The clutter measurement response includes whether clutter measurement can be performed and the actual configuration used. The actual configuration used can be the sensing signal configuration recommended by SF, or the sensing signal configuration adjusted and updated by BS.

[0158] In step S404, the BS performs clutter sensing and feeds back clutter information to the SF.

[0159] Similar to Embodiment 2 above, clutter measurement in this embodiment can also be performed simultaneously with other sensing tasks. In this case, it is only necessary to replace the clutter measurement request in step S402 with a sensing request containing clutter measurement indication or clutter measurement configuration, replace the clutter measurement response in step S403 with a sensing measurement response containing clutter measurement response, replace the clutter sensing performed by BS with sensing, and replace the clutter information in step S404 with sensing information containing clutter information.

[0160] In some embodiments, the UE can also implement a self-transmitting and self-receiving mode. In this case, it is only necessary to replace the BS in steps S401 to S404 with the UE, and replace the reporting BS capability in step S401 with the reporting UE capability.

[0161] Example 4: Clutter measurement process for BS (Transmitter A, Receiver B).

[0162] This embodiment describes an interaction method between SF and BS1 and BS2. This method can be used for clutter measurement of base station A transmitting and B receiving.

[0163] Figure 5 is a schematic diagram of the clutter measurement process of BS A transmit and B receive according to an embodiment of the present disclosure. As shown in Figure 5, the process includes the interaction between SF and BS1 and BS2, and specifically includes the following steps:

[0164] In step S501, BS1 and BS2 can report clutter sensing capability information or sensing capability information (BS capability) to SF.

[0165] In step S502, SF sends a clutter measurement request to BS1 and BS2.

[0166] For example, assuming BS1 is the transmitting BS and BS2 is the receiving BS, then SF sends a measurement signal transmission request to the transmitting BS (BS1), and SF sends a receive measurement processing request (i.e., clutter measurement configuration) to the receiving BS (BS1). The reverse can also be achieved.

[0167] The received measurement processing request may include clutter measurement configuration, which includes the spatial range of clutter, the Doppler range of clutter, the intensity range of clutter, the resolution of clutter cells, the format of clutter information reporting, and / or the period of clutter information reporting. The resolution of the clutter cells can be greater than the resolution of the receiver; this allows for averaging of clutter information from multiple receiver cells to obtain more accurate clutter information.

[0168] The measurement signal transmission request may include a recommended sensing signal configuration, which can originate from the SF itself, or from BS1 or BS2. The recommended sensing signal configuration can be a single configuration or a collection of multiple configurations. The latter allows the serving BS (BS1 or BS2) to choose from various configurations. Furthermore, the measurement signal transmission request may also include sensing signal configurations supported by BS1 or BS2, thus informing the serving BS which sensing signal configuration can be used. For example, if BS2 is the serving BS, the measurement signal transmission request sent to BS2 may carry sensing signal configurations supported by BS1. The serving BS refers to the BS responsible for allocating sensing resources in the area where the SF has requested clutter measurements. The sensing signal configuration includes sensing reference signal parameters and sensing resource configurations.

[0169] In step S503, BS1 and BS2 send clutter measurement responses to SF.

[0170] The clutter measurement response includes whether clutter measurement can be performed. The clutter measurement response of the serving BS can include the actual configuration used. The actual configuration used can be the successfully recommended sensing signal configuration, or the sensing signal configuration adjusted and updated by the BS.

[0171] In step S504, BS1 and BS2 perform clutter sensing with A transmitting and B receiving, and feed back clutter information to SF through the receiving BS.

[0172] Similar to Embodiment 2 above, in this embodiment, the clutter measurement request can be performed simultaneously with other sensing tasks. In this case, it is only necessary to replace the clutter measurement request in step S502 with a sensing request containing a clutter measurement indication or clutter measurement configuration, replace the clutter measurement response in step S503 with a sensing measurement response containing a clutter measurement response, replace the clutter sensing performed by BS1 and BS2 with sensing, and replace the clutter information in step S504 with sensing information containing clutter information.

[0173] Example 5: BS and UE collaborative clutter measurement process.

[0174] This embodiment introduces an interaction method between SF and BS. This method can be used for clutter measurement of base station A transmitting and B receiving.

[0175] Figure 6 is a schematic diagram of the BS and UE cooperative clutter measurement process according to an embodiment of the present disclosure. As shown in Figure 6, the process includes the interaction between the SF and the BS, and specifically includes the following steps:

[0176] In step S601, the BS can report its clutter perception capability information or perception capability information (BS capability) to the SF. The UE can report its clutter perception capability information or perception capability information (UE capability) to the SF.

[0177] The UE capabilities may include:

[0178] 1) Supported perception modes and corresponding UE capabilities, including: the UE's "transmit" and "receive" capabilities in the UE self-transmit and self-receive mode; the UE's "transmit" and "receive" capabilities in the UE 1 transmit UE 2 receive mode; the UE's "receive" capability in the BS transmit UE receive mode; and the UE's "transmit" capability in the UE transmit BS receive mode.

[0179] 2) Supported terminal roles: sensing sending terminal, sensing receiving terminal, sensing management terminal.

[0180] 3) Clutter sensing measurement range / accuracy / resolution or sensing measurement range / accuracy / resolution for each supported sensing mode, such as spatial range / accuracy / resolution, distance range / accuracy / resolution, angular range / accuracy / resolution, Doppler range / accuracy / resolution, etc.

[0181] 4) UE processing capabilities (for each supported sensing mode): Supported processing methods or algorithms, such as supported sensing measurements, whether clutter measurements are supported, maximum amount of data to be processed, and whether super-resolution algorithms are supported.

[0182] 5) UE reporting capability (for each supported perception mode): Supports the reporting information format, period, data volume, etc.

[0183] 6) UE hardware capabilities: number of antennas, maximum transmit power, maximum supported bandwidth, etc.

[0184] In step S602, the SF sends a clutter measurement request to the BS and UE.

[0185] Specifically, the SF sends a measurement signal transmission request to the transmitting node (BS or UE), and a receive measurement processing request to the receiving node (UE or BS). The receive measurement processing request includes the spatial range of clutter, the Doppler range of clutter, the intensity range of clutter, the resolution of clutter cells, the format of clutter information reporting, and / or the period of clutter information reporting. The resolution of the clutter cells can be greater than the resolution of the receiver; this allows for averaging of clutter information across multiple receivers. The measurement signal transmission request may include a recommended sensing signal configuration, which can originate from the SF itself, or from the BS or UE. The recommended sensing signal configuration can be a single configuration or a collection of multiple configurations. The latter allows the BS to choose from a variety of configurations. Furthermore, the measurement signal transmission request may also include sensing signal configurations supported by the UE, thus informing the BS which sensing signal configuration can be used. Sensing signal configurations include sensing reference signal parameters and sensing resource configurations.

[0186] In step S603, the BS and UE send a clutter measurement response to the SF.

[0187] The clutter measurement response includes whether clutter measurement is possible. The BS's clutter measurement response may also include the actual configuration used. The actual configuration used can be the successfully recommended sensing signal configuration, or the sensing signal configuration adjusted and updated by the BS.

[0188] In step S604, the BS and UE perform clutter sensing for A-transmit and B-receive, and feed back clutter information to the SF through the receiving node.

[0189] In this embodiment, the SF and UE interact via Non-Access Stratum (NAS) signaling, and the BS transparently forwards the data. The above process can also be modified to allow the BS to perform non-transparent forwarding, the advantage of which is that the BS can also obtain some clutter-related information.

[0190] Similar to Embodiment 2 above, in this embodiment, the clutter measurement request can be performed simultaneously with other sensing tasks. In this case, it is only necessary to replace the clutter measurement request in step S602 with a sensing request containing a clutter measurement indication or clutter measurement configuration, replace the clutter measurement response in step S603 with a sensing measurement response containing a clutter measurement response, replace the clutter sensing performed by the BS and UE with sensing, and replace the clutter information in step S604 with sensing information containing clutter information.

[0191] Example 6: Clutter Information Update.

[0192] In this embodiment, considering that there may be variable clutter in the environment, SF needs to update the clutter information.

[0193] Figure 7 is a schematic diagram of the clutter information update process according to an embodiment of the present disclosure. As shown in Figure 7, the process includes the interaction between the SF and the BS / UE, and specifically includes the following steps:

[0194] Step S701: SF sends a clutter measurement request to BS / UE.

[0195] The clutter measurement request carries the clutter measurement configuration, including the spatial range of the clutter, the Doppler range of the clutter, the intensity range of the clutter, the resolution of the clutter cell, the format of the clutter information reporting, and / or the period of the clutter information reporting.

[0196] In step S702, the BS / UE performs clutter measurement and feeds back clutter information to the SF.

[0197] In step S703, the SF sends an update request for clutter information to the BS / UE.

[0198] The update request can reuse some or all of the clutter measurement configurations from the clutter measurement request, such as the spatial range of clutter, the Doppler range of clutter, the resolution of clutter cells, the format of clutter information reporting, and the period of clutter information reporting. The clutter measurement request can update these configurations at least partially. The clutter update request can be a global update (acquiring all information) or a partial update targeting only the changed parts of the clutter map (acquiring only incremental information).

[0199] In step S704, the BS / UE performs clutter measurement and sends clutter update information back to the SF.

[0200] The clutter update information can be either a full update using new clutter intensity values ​​or an incremental update. The latter has the advantage of reducing overhead.

[0201] In one exemplary embodiment, clutter information can be divided into static and dynamic components. Static clutter information remains unchanged or changes slowly, while dynamic clutter information changes relatively quickly. Therefore, during clutter updates, only the dynamically changing portion of the clutter information can be updated. In other words, the clutter information can be divided into fixed and variable parts, and only the variable part is updated.

[0202] In this embodiment, the update of clutter information (such as clutter maps) can be periodic, such as updating at regular intervals, or non-periodic, such as being triggered by events. If it is event-triggered, the influence of weather on clutter can also be considered; for example, the clutter information can be updated when the weather changes. Clutter maps under specific weather conditions can be generated after measurement or inferred from clutter maps under other weather conditions.

[0203] Example 7: Requesting and applying clutter information.

[0204] This embodiment introduces a method for detecting clutter information in a BS / UE application.

[0205] Figure 8 is a schematic diagram of the process for detecting clutter information applied by the BS / UE according to an embodiment of the present disclosure. As shown in Figure 8, the process includes the interaction between the SF and the BS / UE, and specifically includes the following steps:

[0206] In step S800, for the scenario where the UE / BS actively acquires clutter information, the UE / BS sends a clutter information request to the SF.

[0207] The clutter information request includes the spatial range of the clutter, the Doppler range of the clutter, the intensity range of the clutter, the resolution of the clutter cells, the format of the clutter information, and / or the validity period or update period of the clutter information. In addition, the clutter information request may also include environmental conditions (such as temperature, precipitation, snowfall, wind speed, humidity, visibility and other weather conditions).

[0208] For scenarios where the SF actively provides clutter information to the UE / BS performing the sensing task, step S800 is not required. Furthermore, the clutter information request can also include a description of the sensing task, meaning the requested clutter information is tied to the sensing task; for example, clutter information for drone detection is different from clutter information for ship detection.

[0209] In step S801, the SF provides clutter information to the UE / BS. If the SF actively provides clutter information to the UE / BS performing the sensing task, then the clutter information can be provided simultaneously with sending the sensing task.

[0210] In step S802, the UE / BS uses clutter information to assist in perception and reports the perception results to the SF.

[0211] Among them, the auxiliary methods may include: (1) detecting only targets exceeding the clutter threshold; (2) detecting only targets that are not clutter units; or, (3) subtracting the detection result from the clutter information to obtain a clean detection result.

[0212] In step S803, under certain circumstances, the SF needs to send updated clutter information to the UE / BS. The update methods include: (1) periodic timed transmission, or the clutter information sent last time has exceeded its validity period; (2) event-triggered transmission, such as clutter changes detected by the UE / BS in this process or other nodes outside the process, or environmental changes detected by other sensors, or when the sensing task is also updated, the updated clutter information can be sent at the same time as the sensing task.

[0213] In step S804, the UE / BS uses the updated clutter information to assist in perception and reports the perception results to the SF.

[0214] Clutter information can be divided into static and dynamic components. Static clutter is either static or slowly changing, while dynamic clutter changes relatively quickly. Therefore, during clutter updates, only the dynamically changing parts can be updated. In other words, clutter information is divided into fixed and variable parts, and only the variable parts are updated.

[0215] In this embodiment, the SF is responsible for managing clutter information. In other embodiments, the BS can also be used to manage clutter information. In this case, the SF in the above embodiments can be replaced with the BS, and the UE / BS can be replaced with the UE.

[0216] Example 8: Clutter information is used as auxiliary information transmission.

[0217] This embodiment describes the process of transmitting clutter information as auxiliary information. In this embodiment, SF is a sensing-related network element, and may also be an Evolved Serving Mobile Location Center (E-SMLC) or Location Management Function (LMF) network element.

[0218] Figure 9 is a schematic diagram (I) of the process of transmitting clutter information as auxiliary information according to an embodiment of the present disclosure. As shown in Figure 9, the process includes the interaction between SF and BS / UE, and specifically includes the following steps:

[0219] Step S901: The BS / UE sends an Assistance Information Request (RequestAssistanceData) to the SF;

[0220] In step S902, the SF sends a Provide Assistance Data message to the BS / UE.

[0221] The ProvideAssistanceData message should contain assistance information that matches or partially includes the assistance information requested in step S901. The SF may also provide assistance information that is not requested but is useful to the BS / UE. If this step ends, the endTransaction information element in this message needs to be set to TRUE.

[0222] In step S903, the SF may further transmit one or more additional ProvideAssistanceData messages to the BS / UE. In the last message, the endTransaction information element needs to be set to TRUE.

[0223] In this embodiment, the RequestAssistanceData information in step S901 carries an IE related to the clutter measurement request, which can be optional. For example, the IE can be named A-Clutter-RequestAssistanceData (Clutter Assistance Information Request), and the parameters are used to request clutter information, which may include the spatial range of the clutter, the Doppler range of the clutter, the intensity range of the clutter, the resolution of the clutter cell, or the format of the clutter information.

[0224] In one exemplary embodiment, a possible example of the A-Clutter-RequestAssistanceData IE is as follows:

[0225] The Clutter-CommonAssistDataReq (Clutter Common Auxiliary Data Request) IE is used to request general clutter information measured by any node. The clutter-GenericAssistDataReq (Clutter Generic Auxiliary Data Request) IE is used to request clutter information measured by one or more specific BSs or UEs. These specific BSs or UEs can be indicated by one or a set of IDs, or can directly correspond to or include the BS or UE initiating the request by default. The Clutter-PeriodicAssistDataReq (Clutter Periodic Auxiliary Data Request) IE is used to indicate the desired clutter information transmission period and the duration of the termination period.

[0226] In this embodiment, the ProvideAssistanceData message in steps S902 and S903 carries an optional IE related to clutter information, which can be named A-Clutter-AssistanceData for example. This parameter is the requested clutter information, and its format can be referred to in Embodiment 1.

[0227] In one exemplary embodiment, a possible example of the A-Clutter-AssistanceData IE is as follows:

[0228] The Clutter-MeasurementInformation IE contains information such as the clutter measurement time, clutter measurement conditions (e.g., temperature, precipitation, snowfall, wind speed, humidity, visibility, etc.), or information related to the measurement node (e.g., number of antennas, bandwidth, power). The Clutter-Information IE contains the requested clutter information. The Clutter-Error IE indicates the error or invalidity of the clutter information and its cause.

[0229] Figure 10 is a schematic diagram (II) of the process of transmitting clutter information as auxiliary information according to an embodiment of the present disclosure. As shown in Figure 10, the process includes the interaction between SF and BS / UE, and specifically includes the following steps:

[0230] In step S1001, the SF sends a ProvideAssistanceData message to the BS / UE. If this step is complete, then the endTransactionIE setting needs to be set to TRUE in the message.

[0231] In step S1002, the SF may further transmit one or more additional ProvideAssistanceData messages to the BS / UE. In the last message, endTransaction IE needs to be set to TRUE.

[0232] The ProvideAssistanceData message in this process includes an IE related to clutter information. This IE can be optional. For specific examples, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0233] In this embodiment, the SF can proactively provide auxiliary information to the UE / BS. Clutter information is included in the auxiliary information.

[0234] Example 9: Clutter information is transmitted as periodic auxiliary information.

[0235] This embodiment describes the process of transmitting clutter information as periodic auxiliary information. SF is a sensing-related network element, which may also be an E-SMLC or LMF.

[0236] Figure 11 is a schematic diagram of the process of transmitting clutter information as periodic auxiliary information according to an embodiment of the present disclosure. As shown in Figure 11, the process includes the interaction between the SF and the BS / UE, and specifically includes the following steps:

[0237] In step S1101, the BS / UE sends an Assistance Data message to the SF using an available transaction ID T1.

[0238] The periodic session ID (periodicSessionID) of this message is S (different from any currently used periodic session ID). The A-Clutter-RequestAssistanceData IE in this message also contains a Clutter-PeriodicAssistDataReq IE, which indicates the expected clutter information transmission period and the duration of the termination period transmission.

[0239] In step S1102, the SF responds to the BS / UE with a Provide Assistance Data message.

[0240] The message uses the transaction ID (transactionID) T1 from step S1101 to indicate the end of the transaction. The message also contains a periodic session ID (periodicSessionID) S. If the request can be supported, the message in the A-Clutter-ProvideAssistanceData IE may include control parameters to confirm or redefine the periodic parameters requested in step S1101. If the BS / UE requests non-periodic assistance data in addition to periodic assistance data, the ProvideAssistanceData message may contain non-periodic assistance information. If the assistance information request cannot be fully or partially supported, the error reason is provided in the A-Clutter-Error IE. If the assistance information request cannot be supported at all, then the following steps are unnecessary.

[0241] In step S1103, when the first periodic information becomes available, the SF can send an unsolicited ProvideAssistanceData message to the BS / UE. This message contains the periodicSessionID S and assistance information. This message uses an available transaction ID T2 that is different from T1.

[0242] Step S1104: SF sends a ProvideAssistanceData message when the periodic conditions are met.

[0243] Step S1105 (Optional): If the UE / BS wants to terminate this session, it sends an Abort message to the SF, which may optionally include an abort cause. No further steps are required. This message is used to indicate the early cessation of periodic auxiliary information.

[0244] Step S1106 (Optional): If the SF wants to terminate this session, it sends an Abort message to the UE / BS, which may optionally include an abort cause. No further steps are required. This message is used to indicate the early cessation of periodic auxiliary information.

[0245] In step S1107, when the transmission of periodic auxiliary information reaches its duration or a termination condition, the last ProvideAssistanceData message will carry an endTransactionIE to indicate the end of transaction T2. ​​This message is used to indicate the normal cessation of periodic auxiliary information transmission.

[0246] The RequestAssistanceData message in the process carries an IE related to the clutter measurement request, which may be optional. The ProvideAssistanceData message in the process includes an IE related to clutter information, which may also be optional. For specific examples, please refer to the relevant description in Embodiment 8 above, which will not be repeated here.

[0247] Example 10: Update process for transmitting clutter information as periodic auxiliary information.

[0248] This embodiment describes the update procedure for transmitting clutter information as periodic auxiliary information. The SF (Sensing Element) is a sensing-related network element, which may also be an E-SMLC or LMF. This procedure allows the BS / UE to request the SF to update the parameters for periodic auxiliary information transmission.

[0249] Figure 12 is a schematic diagram of the update process of transmitting clutter information as periodic auxiliary information according to an embodiment of the present disclosure. As shown in Figure 12, the process includes the interaction between the SF and the BS / UE, and specifically includes the following steps:

[0250] Step S1201, Periodic auxiliary information transmission process.

[0251] This step can reuse steps S1101 and S1102, as well as optional steps S1103 and S1104, from Embodiment Nine, with the following difference:

[0252] 1) Unlike step S1101 in Embodiment 10, the RequestAssistanceData message also needs to indicate the update capability of the BS / UE.

[0253] 2) Unlike step S1102 in Embodiment 10, the ProvideAssistanceData message also needs to indicate the update capability of the BS / UE supported by the SF.

[0254] In step S1202, the BS / UE sends an Assistance Data message using an available transactionID T3.

[0255] Where T3 ≠ T2. If the current sending node is a UE that has changed its primary cell and the UE update capability supported by SF includes updating the primary cell ID, then the message contains periodicSessionID S (used in step S1201) and indicates the new primary cell ID through CommonIEsRequestAssistanceData IE.

[0256] In step S1203, the SF responds to the BS / UE with a Provide Assistance Date message.

[0257] This message uses transactionID T3 and indicates the end of the current transaction via endTransaction. The message contains periodicSessionID S in CommonIEsProvideAssistanceData IE.

[0258] Step S1204: Using the updated information, continue the periodic auxiliary information transmission process.

[0259] Example 11: Clutter-Auxiliary Information Control and Feedback.

[0260] This embodiment provides a process for clutter-assisted information control and clutter-assisted information feedback. The purpose of clutter-assisted information control is to allow the SF to transmit control messages for clutter-assisted information to the BS for broadcasting the clutter-assisted information. The purpose of clutter-assisted information feedback is to allow the BS to transmit feedback information regarding the broadcast of clutter-assisted information to the SF.

[0261] Figure 13 is a schematic flowchart of clutter-assisted information control and feedback according to an embodiment of the present disclosure. As shown in Figure 13, the process includes the interaction between the SF and BS, specifically including the following steps:

[0262] In step S1301, the SF sends a Clutter Assistance Information Control message to the BS.

[0263] If clutter assistance information is included in the control message, the BS should replace the previously stored clutter assistance information and broadcast the received clutter assistance information.

[0264] If the broadcast priority is included in the control message, the BS can refer to it when configuring broadcasts. Clutter auxiliary information with the same priority should be treated equally, such as either all being broadcast or none being broadcast.

[0265] If the broadcast IE is included in the control message and set to "Start", then the BS can begin broadcasting clutter assistance information. If the BS has no clutter assistance information available, then the process fails. If the broadcast IE is set to "End", then the BS stops broadcasting clutter assistance information.

[0266] In step S1302, the BS sends a Clutter Assistance Information Feedback message to the SF.

[0267] If the Clutter Assist Information Failure List (IE) is included in the feedback message, SF should assume that Clutter Assist Information Broadcasting cannot be configured.

[0268] If the broadcast cell IE is included in the feedback message, SF should assume that the feedback can be applied to the cells included in this IE.

[0269] This disclosure also provides a clutter information management device for implementing the above embodiments and exemplary implementations, which will not be repeated hereafter. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0270] Figure 14 is a structural block diagram of a clutter information management device according to an embodiment of the present disclosure. As shown in Figure 14, the clutter information management device 100 may include one or more (only one is shown in Figure 14) processors 12 (processors 12 may include, but are not limited to, processing devices such as microprocessors (MCUs) or programmable logic devices (FPGAs)) and a memory 14 for storing data. The device may also include transmission devices for communication functions and input / output devices. Those skilled in the art will understand that the structure shown in Figure 14 is merely illustrative and does not limit the structure of the device. For example, the clutter information management device may include more or fewer components than shown in Figure 14, or have a different configuration than that shown in Figure 14.

[0271] The memory 14 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the clutter information management method in this embodiment. The processor 12 executes various functional applications and data processing by running the computer program stored in the memory 14, thus implementing the above-described method. The memory 14 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 14 may further include memory remotely located relative to the processor 12, and these remote memories can be connected to the clutter information management device via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the communication provider of the clutter information management device. In one instance, the transmission device includes a Network Interface Controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one instance, the transmission device may be a radio frequency (RF) module used to communicate with the Internet wirelessly.

[0272] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0273] Embodiments of this disclosure also provide a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps in any of the above method embodiments.

[0274] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0275] Embodiments of this disclosure also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0276] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0277] Embodiments of this disclosure also provide a computer program product, including a computer program that, when executed by a processor, implements the steps in any of the method embodiments described above.

[0278] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0279] It is obvious to those skilled in the art that the modules or steps of this disclosure described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this disclosure is not limited to any particular combination of hardware and software.

[0280] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A clutter information management method applied to a sensing function network element, the method comprising: Send a clutter measurement request to the first device; Receive a measurement report carrying clutter information from the first device.

2. The method according to claim 1, wherein, The clutter measurement request includes one of the following: Dedicated signaling carrying clutter measurement configuration; A sensing request carrying a clutter measurement indication, wherein the clutter measurement indication is used to instruct the first device to perform clutter measurement while performing environmental sensing, and the clutter measurement configuration is pre-configured information or multiplexed sensing measurement configuration; A sensing request carrying the aforementioned clutter measurement configuration.

3. The method of claim 2, wherein, The clutter measurement configuration includes at least one of the following: spatial range of clutter, Doppler range of clutter, intensity range of clutter, resolution of clutter cells, format of clutter information reporting, and period of clutter information reporting.

4. The method according to claim 3, wherein, The clutter information reporting format includes one of the following: statistical characteristic values ​​of each clutter cell within a specified range, clutter cell index with clutter and corresponding statistical characteristic values ​​of the clutter cell, and clutter cell index with clutter.

5. The method of claim 3, wherein, The clutter unit partitioning method includes spatial partitioning and / or Doppler domain partitioning.

6. The method of claim 1, wherein, The clutter information includes one of the following types: clutter map, clutter profile map, or mixed clutter map.

7. The method of claim 1, wherein, The measurement report includes one of the following: A dedicated measurement report carrying the aforementioned clutter information; A sensing measurement report carrying the clutter information.

8. The method of claim 1, wherein, The clutter measurement request also carries the sensing signal configuration recommended by the sensing function network element.

9. The method according to claim 8, wherein, After sending the clutter measurement request to the first device, the method further includes: The clutter measurement response is received from the first device, wherein the clutter measurement response carries the sensing signal configuration actually used by the first device.

10. The method of claim 1, wherein, The method further includes: Receive clutter sensing capability information or sensing capability information from the first device.

11. The method according to claim 10, wherein, The clutter sensing capability information or the sensing capability information includes at least one of the following: supported sensing modes, supported terminal roles, signal transmission capability, signal reception capability, resource configuration capability, processing capability, reporting capability, hardware capability, clutter sensing measurement range or sensing measurement range, clutter sensing measurement accuracy or sensing measurement accuracy, and clutter sensing measurement resolution or sensing measurement resolution.

12. The method according to claim 1, wherein, In response to the sensing mode being a self-transmitting and self-receiving mode, the first device is used to transmit a measurement signal, receive the echo of the measurement signal, and perform clutter measurement.

13. The method according to claim 1, wherein, In response to a sensing mode of A transmitting and B receiving, the first device includes a transmitting device and a receiving device, wherein... The transmitting device is used to transmit measurement signals; The receiving device is used to receive the echo of the measurement signal and perform clutter measurement.

14. The method according to claim 13, wherein, Sending the clutter measurement request to the first device includes: Send a measurement signal transmission request carrying the recommended sensing signal configuration to the transmitting device; Send a receive measurement processing request carrying clutter measurement configuration to the receiving device; The clutter measurement request includes the measurement signal transmission request and the receiving measurement processing request.

15. The method according to claim 1, wherein, The method further includes at least one of the following: Send a clutter information update request to the first device; The clutter update information is received from the first device, wherein the clutter update information is either incremental information or full information of the clutter information.

16. The method according to claim 15, wherein, The clutter information update request reuses the clutter measurement configuration in the clutter measurement request, or the clutter information update request carries a new clutter measurement configuration.

17. The method according to claim 1, wherein, The method further includes: Send target clutter information related to the target perception task to the second device; Receive the perception results of the target perception task from the second device.

18. The method according to claim 17, wherein, Before sending target clutter information related to the target perception task to the second device, the method further includes: The clutter information request is received from the second device, wherein the clutter information request carries description information of the target sensing task and / or clutter configuration related to the target sensing task.

19. The method according to claim 18, wherein, The clutter configuration includes at least one of the following: spatial range of clutter, Doppler range of clutter, intensity range of clutter, resolution of clutter cells, format of clutter information, update period of clutter information, effective period of clutter information, and environmental conditions.

20. The method of claim 17, wherein, The method also includes one of the following: Periodically send target clutter update information to the second device; In response to the time when the last transmission of the target clutter information or the target clutter update information exceeds the validity period of the clutter information, the target clutter update information is sent to the second device. In response to environmental changes or changes in the target perception task, the target clutter update information is sent to the second device.

21. The method according to claim 17, wherein, The method further includes: Send an auxiliary information message to a third device, wherein the auxiliary information message carries information elements related to the clutter information.

22. The method according to claim 21, wherein, Information elements associated with the clutter information include at least one of the following: Clutter measurement information, including clutter measurement time, clutter measurement conditions, or information related to measurement nodes; The clutter information requested by the third device; Clutter error messages indicate the situation and cause of clutter information errors or failures.

23. The method according to claim 21, wherein, The message providing auxiliary information also carries at least one of the following: A transaction identifier is used to indicate whether the auxiliary information message belongs to a control transaction or a data transaction. Periodic session identifier; Control parameters; Periodic auxiliary information; Non-periodic auxiliary information; An end-of-transaction indication is used to indicate the end of the current transaction when the transmission of the periodic auxiliary information reaches its duration or a termination condition. Update capability indicator, used to indicate the update capability of the third device.

24. The method according to claim 21, wherein, The method further includes: The auxiliary information request sent by the third device is received, wherein the auxiliary information request carries information elements related to the clutter measurement request.

25. The method according to claim 24, wherein, Information elements associated with the clutter measurement request include at least one of the following: Clutter Common Auxiliary Data Request (CAFR), used to request clutter information measured at any node; Clutter General Auxiliary Data Request is used to request clutter information measured at a specified node; Clutter period auxiliary data request, used to indicate the desired clutter information transmission period and the duration of the termination period transmission; The public information element requests auxiliary data to indicate changes in clutter measurements.

26. The method of claim 24, wherein, The assistance information request also carries at least one of the following: A transaction identifier is used to indicate whether the auxiliary information request belongs to a control transaction or a data transaction. Periodic session identifier; Control parameters; Auxiliary information type.

27. The method according to claim 21, wherein, The method further includes: Receive a termination message from the third device; or, Send the termination message to the third device; The termination message carries a transaction identifier to indicate that the corresponding transaction is terminated early.

28. The method according to claim 21, wherein, The method further includes: Send a control message related to the providing assistance information message to the fourth device, so that the fourth device broadcasts the providing assistance information message according to the control message; Receive feedback messages related to the message providing auxiliary information from the fourth device.

29. A computer-readable storage medium, wherein, The storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any one of claims 1 to 28.

30. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein, When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 28.

31. A computer program product comprising a computer program, wherein, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 1 to 28.

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