Information processing method and apparatus, communication device, and storage medium

Abstract

Embodiments of the present disclosure provide an information processing method and device, a communication device and a storage medium. The information processing method performed by a perception function can include: receiving a first perception request sent by an external perception service provider; selecting a target performer from alternative performers according to the first perception request, wherein the alternative performers include a base station and / or a user equipment (UE); sending a second perception request to the target performer; receiving a second perception response of the target performer based on the second perception request; and sending a first perception response to the external perception service provider according to the second perception response.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of wireless communication technology, and particularly to an information processing method and apparatus, communication equipment and storage medium. Background Technology

[0002] Wireless sensing technology aims to acquire information about distant objects by transmitting sensing signals without physical contact. After analyzing the target's perception data (or sensing data) or the perception data around the target, the characteristics of the target and / or the characteristics of the target's environment can be obtained.

[0003] Radar is widely used in wireless sensing technology, which uses radar signals to determine the distance, angle, and instantaneous velocity of a target.

[0004] Other sensing technologies include non-radio frequency (RF) sensors, which may include time-of-flight (ToF) cameras, accelerometers, gyroscopes, and lidar.

[0005] The integrated sensing and communication system means that the new radio (NR) in fifth-generation mobile communication (5G) is endowed with sensing capabilities. Thus, the communication system and infrastructure of 5G NR are used for both communication and sensing services. Summary of the Invention

[0006] This disclosure provides an information processing method and apparatus, a communication device and a storage medium.

[0007] A first aspect of this disclosure provides an information processing method, wherein the method is executed by a sensing function, the method comprising:

[0008] Receive the first sensing request sent by the external sensing service provider;

[0009] Based on the first perception request, a target executor is selected from the candidate executors, wherein the candidate executors include: base stations and / or user equipment (UE);

[0010] Send a second perception request to the target executor;

[0011] Receive the second perception response from the target executor based on the second perception request;

[0012] Based on the second perception response, a first perception response is sent to the external perception service provider.

[0013] A second aspect of this disclosure provides an information processing method, wherein the information is provided by a candidate executor with the ability to perceive business execution, the method comprising:

[0014] Send a registration request to the sensing function, wherein the registration request includes at least: identification information, the identification information indicating an alternative executor capable of providing sensing services.

[0015] A third aspect of this disclosure provides an information processing method, wherein the method is performed by an external sensing service provider, the method comprising:

[0016] The first perception request sent to the perception function;

[0017] Receive the first sensing response sent by the sensing function.

[0018] A fourth aspect of this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0019] The first receiving module is configured to receive the first sensing request sent by an external sensing service provider;

[0020] The first selection module is configured to select a target executor from the candidate executors according to the first perception request, wherein the candidate executors include: base stations and / or user equipment (UE);

[0021] The first sending module is configured to send a second perception request to the target executor;

[0022] The first receiving module is configured to receive a second perception response from the target executor based on the second perception request;

[0023] The first sending module is configured to send a first sensing response to the external sensing service provider based on the second sensing response.

[0024] A fifth aspect of this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0025] The second sending module is configured to send a registration request to the sensing function, wherein the registration request includes at least: identification information, the identification information indicating an alternative executor capable of providing sensing services.

[0026] A sixth aspect of this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0027] The third sending module is configured to send a first sensing request to the sensing function.

[0028] The third receiving module is configured to receive the first sensing response sent by the sensing function.

[0029] A seventh aspect of this disclosure provides a communication device, including a processor, a transceiver, a memory, and an executable program stored in the memory and executable by the processor, wherein when the processor executes the executable program, it performs an information processing method as provided in any of the first to third aspects described above.

[0030] The eighth aspect of this disclosure provides a computer storage medium storing an executable program; after being executed by a processor, the executable program is able to implement the information processing method provided by any of the first to third aspects.

[0031] The technical solution provided in this disclosure allows an external sensing service provider to request sensing services through sensing functions located within the network. In this way, network elements and / or UEs within the network can provide sensing services to the external sensing service provider.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0034] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment;

[0035] Figure 2 This is a schematic diagram illustrating a network architecture according to an exemplary embodiment;

[0036] Figure 3 This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0037] Figure 4 This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0038] Figure 5 This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0039] Figure 6 This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0040] Figure 7 This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0041] Figure 8This is a flowchart illustrating an information processing method according to an exemplary embodiment;

[0042] Figure 9 This is a schematic diagram of the structure of an information processing apparatus according to an exemplary embodiment;

[0043] Figure 10 This is a schematic diagram of the structure of an information processing apparatus according to an exemplary embodiment;

[0044] Figure 11 This is a schematic diagram of the structure of an information processing apparatus according to an exemplary embodiment;

[0045] Figure 12 This is a schematic diagram of the structure of a UE according to an exemplary embodiment;

[0046] Figure 13 This is a schematic diagram of the structure of a communication device according to an exemplary embodiment. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of the present invention.

[0048] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments disclosed herein. The singular forms “a,” “the,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0049] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0050] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1As shown, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include: several UEs 11 and several access devices 12.

[0051] UE 11 can be a device that provides voice and / or data connectivity to a user. UE 11 can communicate with one or more core networks via a Radio Access Network (RAN). UE 11 can be an IoT UE, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT UE. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, UE 11 can also be a device in an unmanned aerial vehicle (UAV). Alternatively, UE 11 can also be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle computer. Alternatively, UE 11 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0052] Access device 12 can be a network-side device in a wireless communication system. This wireless communication system can be a 4G system (also known as Long Term Evolution, LTE); or it can be a 5G system (also known as a New Radio, NR, or 5G NR system). Alternatively, it can be the next generation after 5G. In this case, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network). Alternatively, it can be an MTC system.

[0053] The access device 12 can be an evolved NB (eNB) used in a 4G system. Alternatively, the access device 12 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When the access device 12 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the access device 12.

[0054] Access device 12 and UE 11 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0055] Figure 2 The diagram illustrates a network architecture, which includes:

[0056] Access Management Function (AMF);

[0057] Session Management Function (SMF);

[0058] Policy Control Function (PCF);

[0059] Radio Access Network (RAN);

[0060] User Plane Function (UPF);

[0061] Sensing Function (SF / Sensing Application Function, SAF). The SF can be connected to the PCF and UPF respectively. In some embodiments, the SF can also be directly connected to the AMF; in some embodiments, the SF can also be referred to as the Sensing Application Function (SAF).

[0062] Radio Access Network (RAN);

[0063] An External Sensing Service Provider (ESSP) connects to the SF. The ESSP can provide sensing services to other devices. This ESSP can be an Over-the-Top (OTT) provider with a business relationship with a mobile operator. The ESSP can also be a third-party service provider. Due to privacy concerns and information security issues within the 3GPP network, the internal structure of the 3GPP network should be transparent to the ESSP. For example, the information of the sensing UE and gNB is unknown to the ESSP; therefore, the SF needs to trigger the base station and / or UE to provide sensing services.

[0064] like Figure 3 As shown, this disclosure provides an information processing method, wherein the method is executed by a Sensing Application Function (SF), and includes:

[0065] S1110: Receive the first sensing request sent by an external sensing service provider;

[0066] S1120: Based on the first perception request, select a target executor from the candidate executors, wherein the candidate executors include: base station and / or UE;

[0067] S1130: Send a second perception request to the target executor;

[0068] S1140: Receive the second perception response from the target executor based on the second perception request;

[0069] S1150: Based on the second perception response, send the first perception response to the external perception service provider.

[0070] The sensing function network entity is located within a communication network, such as a 3GPP network. It is a component of the 3GPP network and is capable of communicating with network elements such as the Access Management Function (AMF) or the Session Management Function (SMF).

[0071] An External Sensing Service Provider (ESSP) can be located outside the network and can connect to the sensing function through the Network Exposure Function (NEF) to exchange information with the sensing function.

[0072] The first perception request may include a perception request provider symbol, which indicates that the request is for requesting perception services.

[0073] Upon receiving the first sensing request, a target executor is selected from the candidate executors, and a second sensing request is sent to the target executor, thereby enabling the target executor to provide sensing services according to the second sensing request. For example, the candidate executors can all be base stations and / or UEs that have registered sensing service information in the SF. For instance, a terminal and / or UE capable of providing sensing services sends a registration request to the SF, indicating that it has the function of providing sensing services.

[0074] For example, the first sensing request includes the sensing service requirement information provided by the ESSP request; based on the requirement information, a target executor capable of meeting the sensing requirements is selected from the candidate executors. The target executor may include a base station and / or a UE.

[0075] In some embodiments, the demand information includes, but is not limited to, the Quality of Service (QoS) of the perceived service.

[0076] The target implementer may include at least one of the following:

[0077] The transmitter transmits a sensing signal, which may be a radar signal and / or a radio frequency signal.

[0078] The receiver receives the reflected signal returned by the sensing target after the sensing signal acts on it.

[0079] In some embodiments, the target executor further includes:

[0080] The processor, which is connected to the receiver or is the receiver itself, can process the sensory data obtained by the receiver from the reflected signals and obtain the sensory results.

[0081] After identifying the target executor from the candidate executors, the target executor will be provided with the perception parameters required for the perception business based on the demand information.

[0082] For example, the transmission period of the sensed signal, the number of carrier frequency bands, the number of transmitters, the number of receivers, and / or the type of target executor can be determined based on the QoS.

[0083] The types of target executors can be divided into: base stations and / or UEs.

[0084] The transmitter may need transmission parameters to send sensing signals; the receiver needs reception parameters to receive reflected signals; and the processor may need processing parameters to process sensing data. Transmission parameters, reception parameters, and processing parameters can be carried in the corresponding second sensing request and sent to the corresponding target transmitter, target receiver, and target processor.

[0085] After the target executor completes the execution of the sensing service, at least the receiver and / or processor returns a response to the SF, namely the second sensing response. This second sensing response may include, but is not limited to, sensing data and / or sensing results. Sensing data is generated by the receiver receiving reflected signals. The sensing results are generated based on the sensing data. Exemplarily, the sensing results may include, but are not limited to, distance and / or direction, the volume and / or shape of the sensed target, etc. In some embodiments, the sensing results may also include a movement rate formed based on changes in the distance to the sensed target.

[0086] Upon receiving the second sensing response, the SF will send the first sensing response to the ESSP. In this way, the ESSP will obtain the sensing results and / or the results of the sensing service provision through the first sensing response.

[0087] In some embodiments, the SF needs to return the sensing results to the ESSP, and the first sensing response will carry the sensing results. In other embodiments, the SF does not need to return the sensing results to the ESSP, but needs to return the sensing results to a specified network element or device. In this case, the SF can inform the ESSP whether the sensing service has been provided based on whether the specified network element or device has been provided, through the first sensing results.

[0088] In some embodiments, selecting a target executor from candidate executors based on the first sensing request includes:

[0089] Based on the location information carried by the first perception request, a target executor located within the target area associated with the location information is selected from the candidate executors.

[0090] The first sensing request carries location information, which indicates the target area provided by the sensing service. For example, this location information may specifically be the location of the sensing target. This location information may include the latitude and longitude of the center point of the target area. After receiving this location information, SF determines the geographical area corresponding to the target area based on the center point and the default radius of the target area.

[0091] In this embodiment of the disclosure, the target executor may be a candidate executor located in the target area, and / or located outside the target area, but may provide a candidate executor for sensing services within the target area through the transmission of sensing signals and the reception of reflected signals.

[0092] In some embodiments, the location information includes:

[0093] The regional information of the target area;

[0094] The identification information of the alternative executor indicates the location of the alternative executor.

[0095] For example, the area information includes: location information of the center point of the target area and the radius and / or location information of the boundary points of the target area. In some embodiments, the target area may be composed of other area identifiers whose area range has been determined. For example, the area information may include: one or more cell identifiers. The area information may include: one or more tracking area identifiers. Or one or more notification area identifiers.

[0096] In some embodiments, if the base station is a candidate executor and is generally stationary, the location information can be identified by the base station identifier. Therefore, the location information can be the identifier information of the candidate executor.

[0097] In summary, the first perception request can carry the location information, so that the SF can subsequently determine the target executor based on the location information.

[0098] In some embodiments, the first sensing request further includes the service type of the sensing service. Different service types have different sensing service requirements. This service type can be used by SF to select a target executor. For example, some candidate executors can only perform some types of sensing services, while others can provide all types of sensing services.

[0099] The service types of the perception services can be distinguished according to the specific application scenarios of the perception services, such as perception services for autonomous driving, perception services for air detection, and / or perception services for weather forecasting.

[0100] like Figure 4As shown, this disclosure provides an information processing method, wherein the method is executed by a Sensing Application Function (SF), and includes:

[0101] S1210: Receive the first sensing request sent by an external sensing service provider;

[0102] S1220: Determine the target area for providing the sensing service based on the first sensing request;

[0103] S1230: Select an alternative executor located in the target area as the target executor for providing the sensing service.

[0104] S1240: Send a second perception request to the target executor;

[0105] S1250: Receive the second perception response from the target executor based on the second perception request;

[0106] S1260: Based on the second perception response, send the first perception response to the external perception service provider.

[0107] In some embodiments, after receiving the first sensing request sent by the SF, if the SF finds that the first sensing request does not carry a time period, it immediately selects a target executor from the alternative executors to understand and provide sensing services.

[0108] In some embodiments, the ESSP can pre-subscribe to sensing services through a first sensing request. This first sensing request carries the service provision period, the start time of which can be later than the time the SF receives the first sensing request. Thus, the SF can uniformly schedule sensing services based on multiple first sensing requests received from the ESSP. This allows the selection of a target executor from alternative executors to be determined based on load balancing.

[0109] In some embodiments, the alternative executor includes: a base station; and / or a user equipment (UE).

[0110] like Figure 5 As shown, this disclosure provides an information processing method, wherein the information is provided by a candidate executor with the ability to perceive business execution, and the method includes:

[0111] S2110: Send a registration request to the sensing function, wherein the registration request includes at least: identification information, the identification information indicating an alternative executor capable of providing sensing services.

[0112] The execution device in this embodiment of the disclosure may be: a candidate executor with the ability to perform sensing services, which may include: a base station and / or a UE capable of performing sensing services.

[0113] In this embodiment of the disclosure, the alternative executor sends a registration request to the SF, which is equivalent to telling the SF that it can provide sensing services.

[0114] For example, in addition to the identification information, the registration request may also include: the alternative executor may participate in providing time period information and / or condition information for the sensing service.

[0115] For example, a UE and / or base station may only be used to provide sensing services when certain conditions are met. These conditions may be defined by condition information. Subsequently, before selecting a target executor, the SF first determines candidate executors capable of providing sensing services based on the registration requests of alternative executors, and then selects the target executor from the candidate executors.

[0116] For example, the UE and / or base station are limited by at least one of the following conditions:

[0117] If the remaining battery power is greater than the battery power threshold, it is determined that it can be a candidate executor for providing sensing services;

[0118] When the current load rate is lower than the load rate threshold, it is determined that it can be a candidate executor to provide awareness services;

[0119] When the channel quality of current wireless communication is higher than the quality threshold, it can be identified as a candidate executor for providing sensing services.

[0120] In summary, in this embodiment of the disclosure, the alternative executor can directly send a registration request to the SF. The registration request will at least carry the identification information (ID) of the alternative executor. In this way, the SF will record the identification information of the alternative executor. When it is necessary to provide sensing services in the future, it will determine which base stations and / or UEs can provide sensing services based on the recorded ID.

[0121] This ID can be any unique identifier for a candidate executor.

[0122] For example, if the alternative executor is a UE, then the UE's ID includes, but is not limited to: International Mobile Subscriber Identity (IMSI), International Mobile Equipment Identity (IMEI), and Mobile Subscriber International ISDN / PSTN number (MSISDN). ISDN is an abbreviation for Integrated Service Digital Network. PSTN is an abbreviation for Public Switched Telephone Network.

[0123] In some embodiments, the UE's Subscription Concealed Identifier (SUCI) or Subscription Permanent Identifier (SUPI) is used. For example, if the alternative executor is a UE, the base station's ID includes, but is not limited to, the base station's IP address and the base station's Fully Qualified Domain Name (FQDN).

[0124] If the alternative executor is a UE, then the registration request can be a Non-Access Stratum (NAS) message sent by the UE to the SF.

[0125] In some embodiments, the registration request may carry, in addition to the identification information, sensory capability information; this sensory capability information indicates the sensory capabilities of the candidate. For example, the sensory capability information indicates at least one of the following:

[0126] The alternative executor can act as the launcher alone;

[0127] The alternative executor can act as the recipient alone;

[0128] The alternative executor acts as both the sender and receiver;

[0129] Can the alternative executor be used as a processor?

[0130] Of course, the above is just an example, and the actual implementation is not limited to this example.

[0131] In some embodiments, the registration request further includes:

[0132] Location information, indicating the location of the alternative executor.

[0133] In one embodiment, the location information may include, but is not limited to, the latitude and longitude of the alternative executor.

[0134] In another embodiment, the location information may include: the cell identifier of the cell where the base station and / or UE is located, which includes, but is not limited to, the Physical Cell Identifier (PCI).

[0135] In some embodiments, when the alternative executor is a UE, the location information may also be: the location information of one or more points on the UE's motion trajectory.

[0136] In some embodiments, the location information may be location information combined with time period information. In this way, when a moving UE makes a registration request, it is equivalent to informing the SF of its own movement trajectory. Subsequently, the SF can select a target executor based on the UE's movement trajectory and the UE's current location.

[0137] like Figure 6 As shown, this disclosure provides an information processing method, wherein the information is provided by a candidate executor with the ability to perceive business execution, and the method includes:

[0138] S2210: Send a registration request to the sensing function, wherein the registration request includes at least: identification information, the identification information indicating an alternative executor capable of providing sensing services.

[0139] S2220: Receive second sensing request;

[0140] S2230: Provide sensing services according to the second sensing request.

[0141] In some embodiments, after a candidate executor registers with the SF that it can serve as a candidate executor for sensing services, it may receive a second sensing request from the SF. If a candidate executor receives a second sensing request, it can consider itself selected as the target executor.

[0142] If a second sensing request is received, sensing services will be provided based on the second sensing request.

[0143] For example, a second perception request may include at least one of the following:

[0144] The execution type indicates whether the current target executor is acting as a sender and / or receiver. In some embodiments, the execution type may also indicate that the corresponding target executor is acting as a processor;

[0145] Sensing parameters. For the transmitter, these sensing parameters may include, but are not limited to: the transmission period of the sensing signal, the transmission period of the sensing signal, the transmission carrier, the transmission direction, and / or the transmission power. For the receiver, these sensing parameters may include, but are not limited to: the reception period of the reflected signal. For the processor, these sensing parameters may include: the processing algorithm for processing the sensing data and / or the receiver's address. The receiver's address can be used to establish a connection between the processor and the receiver, and to receive sensing data from the receiver for processing according to the processing algorithm.

[0146] In some embodiments, the method further includes:

[0147] When the alternative executor acts as the receiver of the sensing service, it receives the reflected signal generated based on the sensing signal to obtain sensing data.

[0148] The perceived data or the perceived result generated based on the perceived data is carried in the second perceived response and returned to SF.

[0149] Of course, in another embodiment, the method further includes:

[0150] When the alternative executor acts as the transmitter of the sensing service, it returns a service execution completion notification to the SF after completing the transmission of the sensing signal.

[0151] This makes it easier for SF to monitor the execution status of its sensing services.

[0152] like Figure 7 As shown, this disclosure provides an information processing method, wherein the method is executed by an external sensing service provider, and the method includes:

[0153] S3110: First sensing request sent to the sensing function;

[0154] S3120: Receives the first sensing response sent by the sensing function.

[0155] In this embodiment of the disclosure, the external sensing service provider (ESSP) can send a first sensing request to the SF. The first sensing request can be used to trigger a network element located within the 3GPP network to select a base station and / or a UE to provide sensing services.

[0156] In some embodiments, the first sensing response includes at least one of the following:

[0157] The response is rejected. At least the SF rejects the first sensing request. For example, if the sensing service requested by the ESSP cannot be executed by the network or the ESSP does not have permission to request the sensing service, a rejection response rejecting the first sensing request may be received.

[0158] The perception result response includes the perception result. For example, if SF selects a target executor based on the first perception request and triggers the target executor to execute the corresponding perception service, generating the corresponding perception result, then this perception result will be carried in the perception result response returned to ESSP.

[0159] Furthermore, the ESSP can relay the perceived results to the consumer. Here, the consumer is the entity that uses the perceived results.

[0160] In some embodiments, the first sensing request may include the consumer's address, in which case the SF can directly send the sensing result to the consumer. In this case, the ESSP receiving the first sensing response may be a sensing service execution notification. This sensing service execution notification is used to inform the ESSP that the sensing service has been executed, or the execution status of the sensing service.

[0161] In some embodiments, the first sensing request includes: location information.

[0162] The location information is used by the sensing function to determine the target executor of the sensing function.

[0163] The first sensing request contains location information, which SF can use to select the target executor based on the target area of ​​the sensing service.

[0164] This location information includes, but is not limited to, latitude and longitude information.

[0165] In other embodiments, the location information may also include: the cell identifier of the cell where the UE is located and / or the cell identifier of the cell formed by the base station.

[0166] In some embodiments, the location information includes:

[0167] The regional information of the target area;

[0168] The identification information of the alternative executor indicates the location of the alternative executor.

[0169] By carrying location information in the first sensing request, SF can conveniently select the target executor. In some embodiments, the first sensing request includes, but is not limited to, at least one of the following:

[0170] Perceive the type of business;

[0171] QoS of the perceived service.

[0172] like Figure 8 As shown in the embodiments of this disclosure, an information processing method is provided, which may include:

[0173] Assuming the UE / gNB is a self-transmitter and self-receiver, the SAF can initiate sensing services based on an authorized ESSP request.

[0174] 1. The UE accesses the mobile network through normal procedures and registers with the SAF using its ID (e.g., SAF). This registration includes the SAF ID (e.g., MSISDN) and location information, which may include the cell ID.

[0175] 2. The gNB registers its IP address and location information with the SAF. This location information may include Global Positioning System (GPS) information.

[0176] 3. ESSP sends a sensing request containing location information of the target area to SAF. This sensing request may include area information such as GPS information.

[0177] 4. Based on the location information received from the ESP, the SAF selects the target UE to provide sensing services and sends a sensing request to the target UE. The target UE provides sensing services according to the SAF's request and then reports the sensing data / results to the SAF.

[0178] 5. The SAF selects the target gNB to provide sensing services based on the location received from the ESSP and sends the sensing request to the relevant target gNB; the gNB performs sensing operations according to the requirements of the SAF and then reports the sensing data / results to the SAF.

[0179] In this embodiment of the disclosure, both the target UE and the target base station are one type of the aforementioned target executor. The target UE can also be referred to as a sensing UE; the target gNB can also be referred to as a sensing gNB.

[0180] like Figure 9 As shown, this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0181] The first receiving module 110 is configured to receive a first sensing request sent by an external sensing service provider;

[0182] The first selection module 120 is configured to select a target executor from the candidate executors according to the first perception request, wherein the candidate executors include: base stations and / or user equipment (UE);

[0183] The first sending module 130 is configured to send a second perception request to the target executor;

[0184] The first receiving module 110 is configured to receive a second perception response from the target executor based on the second perception request;

[0185] The first sending module 130 is configured to send a first sensing response to the external sensing service provider based on the second sensing response.

[0186] The information processing device may be included in SF.

[0187] In some embodiments, the first receiving module 110, the first selecting module 120, and the first sending module 130 may include a program module; after the program module is executed by the processor, it can realize the functions of the above-mentioned modules.

[0188] In other embodiments, the first receiving module 110, the first selecting module 120, and the first transmitting module 130 may include a hardware-software hybrid module; the hardware-software hybrid module includes, but is not limited to, a programmable array; the programmable array includes, but is not limited to, a field-programmable array and / or a complex programmable column.

[0189] In some embodiments, the first receiving module 110, the first selecting module 120, and the first transmitting module 130 may include pure hardware modules; the pure hardware modules include, but are not limited to, application-specific integrated circuits.

[0190] In some embodiments, the selection module is configured to select a target executor located within a target area associated with the location information from the candidate executors based on the location information carried by the first perception request.

[0191] In some embodiments, the location information includes:

[0192] The regional information of the target area;

[0193] Location information, indicating the location of the alternative executor.

[0194] In some embodiments, the apparatus further includes:

[0195] The determination module is configured to determine the target area for providing the sensing service based on the first sensing request;

[0196] The second selection module is configured to select an alternative executor located in the target area as the target executor for providing the perception service.

[0197] In some embodiments, the first sending module 130 is configured to send a request message to the target executor, wherein the request message is used to request the target executor to provide sensing services.

[0198] In some embodiments, the first receiving module 110 is further configured to receive perception data returned by the target executor or perception results generated based on the perception data.

[0199] In some embodiments, the alternative executor includes at least one of the following:

[0200] Base station;

[0201] User Equipment (UE)

[0202] like Figure 10 As shown, this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0203] The second sending module 210 is configured to send a registration request to the sensing function, wherein the registration request includes at least: identification information, the identification information indicating an alternative executor capable of providing sensing services.

[0204] The information processing apparatus may be included among the alternative executors. The alternative executors include, but are not limited to, base stations and / or UEs.

[0205] In some embodiments, the second sending module 210 may include a program module; after the program module is executed by the processor, it can realize the functions of the above-mentioned modules.

[0206] In other embodiments, the second transmitting module 210 may include a hardware-software hybrid module; the hardware-software hybrid module includes, but is not limited to, a programmable array; the programmable array includes, but is not limited to, a field-programmable array and / or a complex programmable column.

[0207] In some embodiments, the second transmitting module 210 may include a pure hardware module; the pure hardware module includes, but is not limited to, an application-specific integrated circuit.

[0208] In some embodiments, the registration request further includes:

[0209] Location information, indicating the location of the alternative executor.

[0210] In some embodiments, the apparatus further includes:

[0211] The second receiving module is configured to receive request messages;

[0212] The module is configured to provide sensing services based on the request message.

[0213] In some embodiments, the second receiving module is configured to receive reflected signals generated based on sensing signals to obtain sensing data when the alternative executor is the receiver of the sensing service;

[0214] The second sending module 210 is configured to return the sensing data or the sensing result generated based on the sensing data to SF in a second sensing response.

[0215] like Figure 11 As shown, this disclosure provides an information processing apparatus, wherein the apparatus includes:

[0216] The third sending module 310 is configured to send a first sensing request to the sensing function.

[0217] The third receiving module 320 is configured to receive the first sensing response sent by the sensing function.

[0218] The information processing device may be included in ESSP.

[0219] The ESSP can be one or more servers deployed outside of the 3GPP network but connected to it.

[0220] In some embodiments, the third sending module 310 and the third receiving module 320 may be program modules; after being executed by the processor, the program modules can perform the above operations.

[0221] In other embodiments, the third transmitting module 310 and the third receiving module 320 may be hardware-software hybrid modules; the hardware-software hybrid modules include, but are not limited to, programmable arrays; the programmable arrays include, but are not limited to, field-programmable arrays and / or complex programmable arrays.

[0222] In some embodiments, the third transmitting module 310 and the third receiving module 320 may be pure hardware modules; the pure hardware modules include, but are not limited to, application-specific integrated circuits.

[0223] In some embodiments, the first sensing request includes: location information, wherein the location information is used for the sensing function to determine the target executor of the sensing function.

[0224] In some embodiments, the location information includes:

[0225] The regional information of the target area;

[0226] The identification information of the alternative executor indicates the location of the alternative executor.

[0227] This disclosure provides a communication device, including:

[0228] Memory used to store processor-executable instructions;

[0229] The processor is connected to the memory.

[0230] The processor is configured to execute the information processing method provided by any of the aforementioned technical solutions.

[0231] The processor may include various types of storage media, which are non-transitory computer storage media that can continue to store information after the communication device loses power.

[0232] Here, the communication device includes: UE or network element, which can be any one of the aforementioned first to fourth network elements.

[0233] The processor can be connected to the memory via a bus or similar means to read executable programs stored in the memory, for example, such as... Figures 3 to 8 At least one of the methods shown.

[0234] Figure 12 This is a block diagram illustrating a UE 800 according to an exemplary embodiment. For example, the UE 800 may be a mobile phone, computer, digital broadcast user equipment, messaging transceiver, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0235] Reference Figure 12 The UE 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0236] Processing component 802 typically controls the overall operation of UE 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to generate all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0237] Memory 804 is configured to store various types of data to support operation on UE 800. Examples of this data include instructions for any application or method operating on UE 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0238] Power supply component 806 provides power to various components of UE 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to UE 800.

[0239] The multimedia component 808 includes a screen that provides an output interface between the UE 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the UE 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0240] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when UE 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0241] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0242] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of UE 800. For example, sensor assembly 814 can detect the on / off state of UE 800, the relative positioning of components such as the display and keypad of UE 800, changes in the position of UE 800 or one of its components, the presence or absence of user contact with UE 800, the orientation or acceleration / deceleration of UE 800, and temperature changes of UE 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0243] Communication component 816 is configured to facilitate wired or wireless communication between UE 800 and other devices. UE 800 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0244] In an exemplary embodiment, UE 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0245] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of the UE 800 to generate the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0246] like Figure 13As shown in the illustration, one embodiment of this disclosure illustrates the structure of a communication device. For example, the communication device 900 can be provided as a network-side device. This communication device can be the aforementioned SAF / SF or the aforementioned ESSP.

[0247] Reference Figure 13 The communication device 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions executable by the processing component 922, such as application programs. The application programs stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform any of the methods described above applied to the access device, such as... Figures 3 to 8 Any of the methods shown.

[0248] The communication device 900 may also include a power supply component 1926 configured to perform power management of the communication device 900, a wired or wireless network interface 950 configured to connect the communication device 900 to a network, and an input / output (I / O) interface 958. The communication device 900 can operate on an operating system stored in memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0249] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0250] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An information processing method, wherein, Performed by the sensing function SF, the method includes: The system receives a registration request from a candidate executor. The registration request includes the candidate executor's identification information, perception capability information, and location information indicating the candidate executor's location. The perception capability information indicates that the candidate executor can act as a transmitter of a perception signal, a receiver of a reflected signal, or both simultaneously. Receive a first sensing request sent by an external sensing service provider (ESSP); wherein the first sensing request includes location information for indicating the target area for providing sensing services and the quality of service (QoS) of the sensing services. Based on the first perception request, a target executor is selected from the registered alternative executors, wherein the registered alternative executors include: base stations and / or user equipment (UE); The step of selecting a target executor from registered candidate executors based on the first perception request includes: Based on the target area and the QoS, a target executor is selected from the registered candidate executors; wherein, the QoS is used to determine the transmission period of the sensed signal, the number of carrier frequency bands, the number of transmitters, and the number of receivers; the target executor includes: a target transmitter and a target receiver; A second perception request is sent to the target executor, wherein the second perception request includes an execution type and perception parameters corresponding to the execution type; a second perception request sent to the target transmitter instructs the target transmitter to act as the transmitter and includes the transmission period and transmission carrier of the perception signal; a second perception request sent to the target receiver instructs the target receiver to act as the receiver and includes the reception period of the reflected signal; Receive a second perception response from the target executor based on the second perception request, wherein the second perception response includes perception data obtained by the target receiver from the reflected signal returned by the perception target after the perception signal is applied to the perception target, or a perception result generated based on the perception data; Based on the second perception response, a first perception response is sent to the external perception service provider.

2. The method according to claim 1, wherein, The first perception request also includes at least one of the following: Perceive the type of business; The provision period of the sensing service; wherein, if the start time of the provision period is later than the reception time of the first sensing request received by the SF, the first sensing request is used to pre-subscribe to the sensing service.

3. The method according to claim 1, wherein, The registration request also includes at least one of the following: Time period information indicates the time periods during which alternative executors can participate in providing sensing services; Condition information indicates that alternative executors can provide the conditions that the perceived business needs to be met.

4. The method according to claim 3, wherein, The condition information indicates at least one of the following: If the current remaining battery power of the candidate executor is greater than the battery power threshold, it will be determined as the candidate executor to provide the sensing service; When the current load rate of the alternative executor is lower than the load rate threshold, it is determined as the alternative executor to provide the perception service; If the channel quality of the current wireless communication of the candidate executor is higher than the quality threshold, it is determined as the candidate executor to provide sensing services.

5. The method according to any one of claims 1 to 4, wherein, The step of selecting a target executor from candidate executors based on the first perception request further includes: Select an alternative executor located in the target area as the target executor to provide the sensing service; or... The candidate executor located outside the target area, which provides sensing services within the target area through the transmission of sensing signals and the reception of reflected signals, is selected as the target executor for providing the sensing services.

6. An information processing method, wherein, Provided by an alternative executor with the ability to perceive and execute business operations, the method includes: A registration request is sent to the sensing function SF. The registration request includes the identification information of the candidate executor, the sensing capability information, and the location information indicating the location of the candidate executor. The sensing capability information indicates that the candidate executor can act as a transmitter of sensing signals alone, as a receiver of reflected signals alone, or as both a transmitter and a receiver at the same time. When the alternative executor is the target executor, a second sensing request is received from the SF, wherein the target executor is determined by the SF from registered alternative executors based on the target area of ​​the sensing service and the Quality of Service (QoS) of the sensing service; the QoS is used to determine the transmission period, number of carrier frequency bands, number of transmitters, and number of receivers of the sensing signal; the target executor includes: a target transmitter and a target receiver; the second sensing request includes an execution type and sensing parameters corresponding to the execution type; the second sensing request sent to the target transmitter indicates that the target transmitter is the transmitter and includes the transmission period and transmission carrier of the sensing signal; the second sensing request sent to the target receiver indicates that the target receiver is the receiver and includes the reception period of the reflected signal; Based on the second perception request, the perception service is executed, and a second perception response is sent to the SF. The second perception response includes perception data obtained by the target receiver receiving the reflection signal returned by the perception signal acting on the perception target, or perception results generated based on the perception data. The second perception response is used by the SF to send the first perception response to the external perception service provider.

7. The method according to claim 6, wherein, The location information of the target area and the QoS are carried in a first sensing request received by SF from ESSP, and the first sensing request further includes at least one of the following: The type of business is perceived to identify the target executor; The provision period of the sensing service; wherein, if the start time of the provision period is later than the reception time of the first sensing request received by the SF, the first sensing request is used to pre-subscribe to the sensing service.

8. The method according to claim 6, wherein, The registration request also includes at least one of the following: Time period information indicates the time periods during which alternative executors can participate in providing sensing services; Condition information indicates that alternative executors can provide the conditions that the perceived business needs to be met.

9. The method according to claim 8, wherein, The condition information indicates at least one of the following: If the current remaining battery power of the candidate executor is greater than the battery power threshold, it will be determined as the candidate executor to provide the sensing service; When the current load rate of the alternative executor is lower than the load rate threshold, it is determined as the alternative executor to provide the perception service; If the channel quality of the current wireless communication of the candidate executor is higher than the quality threshold, it is determined as the candidate executor to provide sensing services.

10. An information processing method, wherein, Performed by an external sensing service provider (ESSP), the method includes: A first sensing request is sent to the sensing function SF; wherein the first sensing request includes location information for indicating the target area for providing sensing services and the quality of service (QoS) of the sensing services; The system receives a first perception response sent by the SF based on a second perception response; wherein the second perception response is sent by the target executor to the SF based on a second perception request, and the second perception request is sent by the SF to the target executor based on the first perception request; the target executor is determined by the SF from registered candidate executors based on the target area of ​​the perception service and the Quality of Service (QoS) of the perception service; the QoS is used to determine the transmission period, number of carrier frequency bands, number of transmitters, and number of receivers of the perception signal; the target executor includes: a target transmitter and a target receiver; the second perception request includes an execution type and perception parameters corresponding to the execution type; the second perception request sent to the target transmitter instructs the target transmitter to act as a transmitter and includes the transmission period and transmission carrier of the perception signal; the second perception request sent to the target receiver instructs the target receiver to act as a receiver and includes the reception period of the reflected signal; the second perception response includes perception data obtained by the target receiver from the reflected signal returned by the perception signal acting on the perception target, or a perception result generated based on the perception data.

11. The method according to claim 10, wherein, The first perception request also includes at least one of the following: The type of business is perceived to identify the target executor; The provision period of the sensing service; wherein, if the start time of the provision period is later than the reception time of the first sensing request received by the SF, the first sensing request is used to pre-subscribe to the sensing service.

12. An information processing apparatus, wherein, The device includes: The first receiving module is configured to receive a registration request sent by a candidate executor. The registration request includes the candidate executor's identification information, sensing capability information, and location information indicating the candidate executor's location. The sensing capability information indicates that the candidate executor can act as a transmitter of sensing signals alone, a receiver of reflected signals alone, or both simultaneously. The module also receives a first sensing request sent by an external sensing service provider (ESSP). The first sensing request includes location information indicating the target area for providing sensing services and the Quality of Service (QoS) of the sensing services. A first selection module is configured to select a target executor from registered candidate executors based on the first sensing request, wherein the registered candidate executors include: base stations and / or user equipment (UE); wherein selecting a target executor from the registered candidate executors based on the first sensing request includes: selecting a target executor from the registered candidate executors based on the target area and the QoS; wherein the QoS is used to determine the transmission period, number of carrier frequency bands, number of transmitters, and number of receivers of the sensing signal; the target executor includes: a target transmitter and a target receiver; A first transmitting module is configured to send a second sensing request to the target executor, wherein the second sensing request includes an execution type and sensing parameters corresponding to the execution type; the second sensing request sent to the target transmitter indicates that the target transmitter is the transmitter and includes the transmission period and transmission carrier of the sensing signal; the second sensing request sent to the target receiver indicates that the target receiver is the receiver and includes the reception period of the reflected signal. The first receiving module is configured to receive a second perception response from the target executor based on the second perception request, wherein the second perception response includes perception data obtained by the target receiver from the reflected signal returned by the perception target after the perception signal is applied to the perception target, or a perception result generated based on the perception data; The first sending module is configured to send a first sensing response to the external sensing service provider based on the second sensing response.

13. An information processing apparatus, wherein, The device includes: The second sending module is configured to send a registration request to the sensing function SF. The registration request includes the identification information of the candidate executor, the sensing capability information, and the location information indicating the location of the candidate executor. The sensing capability information indicates that the candidate executor can act as a transmitter of sensing signals alone, as a receiver of reflected signals alone, or as both the transmitter and the receiver simultaneously. The second receiving module is configured to receive a second sensing request sent by the SF when the alternative executor is the target executor. The target executor is determined by the SF from registered alternative executors based on the target area and the Quality of Service (QoS) of the sensing service. The QoS is used to determine the transmission period, number of carrier frequency bands, number of transmitters, and number of receivers of the sensing signal. The target executor includes a target transmitter and a target receiver. The second sensing request includes an execution type and sensing parameters corresponding to the execution type. The second sensing request sent to the target transmitter indicates that the target transmitter is the transmitter and includes the transmission period and transmission carrier of the sensing signal. The second sensing request sent to the target receiver indicates that the target receiver is the receiver and includes the reception period of the reflected signal. The module is configured to perform a sensing service and send a second sensing response to the SF based on the second sensing request. The second sensing response includes sensing data obtained by the target receiver receiving a sensing signal acting on a sensing target and returning a reflected signal, or a sensing result generated based on the sensing data. The second sensing response is used by the SF to send a first sensing response to an external sensing service provider.

14. An information processing apparatus, wherein, The device includes: The third sending module is configured to send a first sensing request to the sensing function SF; wherein the first sensing request includes location information for indicating the target area for providing sensing services and the quality of service (QoS) of the sensing services; The third receiving module is configured to receive a first sensing response sent by the SF based on a second sensing response; wherein the second sensing response is sent by the target executor to the SF based on a second sensing request, and the second sensing request is sent by the SF to the target executor based on the first sensing request; the target executor is determined by the SF from registered candidate executors based on the target area of ​​the sensing service and the Quality of Service (QoS) of the sensing service; the QoS is used to determine the transmission period, number of carrier frequency bands, number of transmitters, and number of receivers of the sensing signal; the target executor includes a target transmitter and a target receiver; the second sensing request includes an execution type and sensing parameters corresponding to the execution type; the second sensing request sent to the target transmitter instructs the target transmitter to act as the transmitter and includes the transmission period and transmission carrier of the sensing signal; the second sensing request sent to the target receiver instructs the target receiver to act as the receiver and includes the reception period of the reflected signal; the second sensing response includes sensing data obtained by the target receiver from the reflected signal returned by the sensing signal acting on the sensing target, or sensing results generated based on the sensing data.

15. A communication device, comprising a processor, a transceiver, a memory, and an executable program stored in the memory and executable by the processor, wherein, When the processor runs the executable program, it performs the method provided as claimed in any one of claims 1 to 5, 6 to 9, or 10 to 11.

16. A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method provided in any one of claims 1 to 5, 6 to 9, or 10 to 11.

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