JP2023133012A - Information processing device, information processing method, and information processing program - Google Patents

Abstract

To improve the accuracy of detection and recognition of a first pulse (1st pulse) of UWB.SOLUTION: An information processing device includes: a reception unit that receives a UWB radio wave; a detection unit that detects a UWB pre-pulse; and an estimation unit that estimates a pulse following the pre-pulse to be a UWB first pulse. The information processing device further includes: a generation unit that sets a pre-pulse before the UWB first pulse in generating a waveform of the UWB radio wave; and a transmission unit that transmits the UWB radio wave including the pre-pulse.SELECTED DRAWING: Figure 1

Description

The present invention relates to an information processing device, an information processing method, and an information processing program.

A technology related to a position detection system that determines the positional relationship between a terminal and a communication device through UWB communication (Ultra Wide Band) has been disclosed.

JP2020-139845A

However, the above-mentioned conventional technology is based on the premise that UWB radio waves can be received normally without any problems in an ideal environment. In UWB, very short and sharp pulse waves are generated multiple times. For example, when the number of pulses is four, the first pulse (1st pulse), the second pulse (2nd pulse), the third pulse (3rd pulse), and the fourth pulse (4th pulse) are generated in this order. When UWB radio waves are not received directly (for example, received via multipath), the first pulse becomes a reflected wave and arrives later than other pulses, or when it is blocked by objects (walls, human bodies, etc.). There is a possibility that the second pulse (2nd pulse) or the third pulse (3rd pulse) may be mistakenly recognized as the first pulse (1st pulse) due to absorption and disappearance.

The present application has been made in view of the above, and by generating a weak pre-pulse (UWB pre-pulse) before the first UWB pulse (1st pulse), the pulse subsequent to the pre-pulse is The purpose is to improve the accuracy of detection and recognition of the UWB first pulse (1st pulse).

An information processing device according to the present application includes a receiving section that receives UWB radio waves, a detecting section that detects a UWB pre-pulse, and an estimating section that estimates that a pulse subsequent to the pre-pulse is a UWB first pulse. It is characterized by being prepared.

According to one aspect of the embodiment, the accuracy of detection and recognition of a UWB first pulse (1st pulse) can be improved.

FIG. 1 is an explanatory diagram showing an overview of an information processing method according to an embodiment. FIG. 2 is an explanatory diagram showing an outline of a UWB prepulse. FIG. 3 is a diagram illustrating a configuration example of an information processing system according to an embodiment. FIG. 4 is a diagram illustrating a configuration example of a terminal device according to an embodiment. FIG. 5 is a diagram illustrating a configuration example of a server device according to an embodiment. FIG. 6 is a diagram showing an example of a user information database. FIG. 7 is a diagram showing an example of a history information database. FIG. 8 is a flowchart showing the processing procedure according to the embodiment. FIG. 9 is a diagram showing an example of the hardware configuration.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information processing apparatus, an information processing method, and an information processing program according to the present application (hereinafter referred to as "embodiments") will be described in detail below with reference to the drawings. Note that the information processing apparatus, information processing method, and information processing program according to the present application are not limited to this embodiment. In addition, in the following embodiments, the same parts are given the same reference numerals, and redundant explanations will be omitted.

[1. Overview of information processing method]
First, with reference to FIG. 1, an overview of an information processing method performed by an information processing apparatus according to an embodiment will be described. FIG. 1 is an explanatory diagram showing an overview of an information processing method according to an embodiment. In addition, in Figure 1, by generating a weak pre-pulse (UWB pre-pulse) before the first pulse (1st pulse) of UWB (Ultra Wide Band: ultra wide band wireless communication), the subsequent pulse of the pre-pulse becomes the first pulse. (1st pulse) will be explained as an example.

As shown in FIG. 1, the information processing system 1 includes a terminal device 10 and a server device 100. The terminal device 10 and the server device 100 are connected via a network N to be able to communicate with each other by wire or wirelessly. In this embodiment, the terminal device 10 cooperates with the server device 100.

The terminal device 10 is a smart device such as a smartphone or a tablet terminal used by a user U (user), and is connected to an arbitrary server device via a wireless communication network such as 4G (Generation) or LTE (Long Term Evolution). This is a mobile terminal device that can communicate. Further, the terminal device 10 has a screen such as a liquid crystal display, which has a touch panel function, and displays data such as content through a tap operation, a slide operation, a scroll operation, etc. from the user U using a finger or a stylus. Accepts various operations on. Note that an operation performed on an area of the screen where content is displayed may be an operation on the content. Further, the terminal device 10 may be not only a smart device but also an information processing device such as a desktop PC (Personal Computer) or a notebook PC.

The server device 100 cooperates with the terminal device 10 of each user U, and provides API (Application Programming Interface) services for various applications (hereinafter referred to as apps) and various data to the terminal device 10 of each user U. It is an information processing device that provides information, and is realized using computers, cloud systems, etc.

Further, the server device 100 may be an information processing device that provides some kind of web service online to the terminal device 10 of each user U. For example, the server device 100 provides web services such as Internet connection, search service, SNS (Social Networking Service), electronic commerce (EC), electronic payment, online games, online banking, online trading, accommodation/ticket reservation, Services such as video/music distribution, news, maps, route searches, route guidance, route information, operation information, weather forecasts, etc. may be provided. In reality, the server device 100 may cooperate with various servers that provide the above-mentioned Web services, mediate the Web services, or may be in charge of processing the Web services.

Note that the server device 100 can acquire user information regarding the user U. For example, the server device 100 acquires information regarding user U's attributes such as user U's gender, age, and residential area. The server device 100 stores and manages identification information indicating the user U (user ID, etc.) as well as information regarding attributes of the user U.

Further, the server device 100 acquires various kinds of history information (log data) indicating the actions of the user U from the terminal device 10 of the user U or from various servers based on the user ID or the like. For example, the server device 100 acquires a location history, which is a history of user U's location, date and time, from the terminal device 10. The server device 100 also acquires a search history, which is a history of search queries input by the user U, from a search server (search engine). Additionally, the server device 100 acquires a viewing history, which is a history of content viewed by the user U, from the content server. The server device 100 also acquires a purchase history (payment history) that is a history of product purchases and payment processing by the user U from the electronic commerce server and the payment processing server. Further, the server device 100 may acquire the listing history and the sales history, which are the listing history of the user U on the marketplace, from the electronic commerce server or the payment processing server. The server device 100 also acquires a posting history, which is a history of postings by the user U, from a posting server or SNS server that provides a word-of-mouth posting service. Note that the various servers described above may be the server device 100 itself. That is, the server device 100 may function as the various servers described above.

[1-1. Premise]
Currently, radio waves such as wireless LAN (Local Area Network) and Bluetooth (registered trademark), which are commonly used as wireless communication standards, have a sine wave waveform with a narrow bandwidth (frequency band), so the waveform is deformed. information cannot be encoded into the waveform itself.

However, since UWB radio waves are not sine waves but pulse waveforms with a very wide bandwidth, the shape of the pulses (intensity, frequency, etc.) can be changed to some extent, and information can be converted into the shape of the pulses. can be encoded (various information can be expressed in the form of pulses).

That is, since UWB does not need to be a sine wave, pulses can be generated. In UWB, the shape of the pulse (intensity, frequency) varies considerably. Further, in UWB, strong waves and weak waves may be output as appropriate.

User U's terminal device 10 (10A) is compatible with UWB (Ultra Wide Band: Ultra Wide Band wireless communication), and receives various information directly or indirectly from other terminal devices 10 (10B, 10C) via UWB. do. Conversely, the terminal device 10 (10A) of the user U transmits various information to other terminal devices 10 (10B, 10C) via UWB. For example, the terminal device 10 (10A) of the user U transmits the context of the user U to the surrounding terminal devices 10 using UWB pulse intensity (radio wave intensity) and frequency (pulse width). Further, the surrounding context is recognized based on the intensity (radio field intensity) and frequency (pulse width) of UWB pulses from surrounding terminal devices 10.

Note that a base station, access point, etc. that can relay communication and output UWB radio waves may exist between the terminal device 10 of user U and other terminal devices 10, etc. Similarly, between the terminal device 10 of the user U and the server device 100, there may be a base station, an access point, etc. that can relay communication and output UWB radio waves. That is, the terminal device 10 of the user U may receive various information from the server device 100 via UWB, or may transmit various information to the server device 100 via UWB.

Further, the information processing system 1 may further include a transmitter 200 in addition to the terminal device 10 and the server device 100. The transmitter 200 may be a loss prevention tag such as AirTag (registered trademark), or may be a house/building, a car, a home appliance, an electronic device, etc. that is compatible with the Internet of Things (IOT). In addition to the terminal device 10, it may be another terminal device (a second smartphone, a tablet terminal, etc.) owned by the user U.

[1-2. USB prepulse]
In this embodiment, the terminal device 10 of the user U outputs a weak pre-pulse (UWB pre-pulse) before the first UWB pulse (1st pulse). The pre-pulse indicates the arrival of the first pulse (1st pulse), which will be followed by the UWB first pulse (1st pulse). That is, the pre-pulse indicates that the subsequent pulse is a UWB first pulse (1st pulse).

As shown in FIG. 1, the terminal device 10 (10A) of the user U supports UWB (Ultra Wide Band), and directly or indirectly communicates with other terminal devices 10 (10B, 10A) via UWB. 10C) or the transmitter 200 (step S1).

Subsequently, the terminal device 10 (10A) of the user U detects a prepulse (UWB prepulse) included in the USB radio wave (step S2).

Subsequently, after detecting the pre-pulse, the terminal device 10 (10A) of the user U detects a pulse subsequent to the detected pre-pulse as a UWB first pulse (1st pulse) (step S3). At this time, the terminal device 10 (10A) may automatically estimate that the subsequent pulse of the detected pre-pulse is the UWB first pulse (1st pulse).

Subsequently, after detecting the first pulse (1st pulse), the terminal device 10 (10A) of the user U detects the second pulse (2nd pulse) and the third pulse as the subsequent pulses of the first pulse (1st pulse). A pulse (3rd pulse), a 4th pulse (4th pulse), etc. are detected (step S4). At this time, the terminal device 10 (10A) sequentially converts the subsequent pulse of the first pulse (1st pulse) into a second pulse (2nd pulse), a third pulse (3rd pulse), and a fourth pulse (4th pulse). It may be estimated. That is, the terminal device 10 (10A) may process the pulses after the first pulse (1st pulse) as normal UWB pulses.

In addition, the UWB transmitting side (output side) may output a weak pulse (or a very large pulse) as the last pulse indicating the end after the final pulse such as the fourth pulse (4th pulse) of UWB. . Preferably, the last pulse indicating the end is a pulse that is not confused with the pre-pulse (eg, a pulse of different intensity).

FIG. 2 is an explanatory diagram showing an outline of a UWB prepulse. As shown in FIG. 2, the weak pre-pulse and the first pulse (1st pulse) have the same frequency but differ in intensity by more than 10 times. If the difference is 10 times or more, even if the first pulse (1st pulse) is attenuated to some extent, it is relatively stable and can be identified as a weak pre-pulse. That is, the intensity of the first pulse (1st pulse) is 10 times or more the intensity of the pre-pulse. In other words, the intensity of the pre-pulse is 1/10 or less of the intensity of the first pulse (1st pulse). Here, peak power is used as the pulse intensity.

Further, the pre-pulse is a weak pulse that disappears (cannot be confused with other pulses) if it is a second pulse (2nd pulse) or a third pulse (3rd pulse). Further, the pre-pulse may be a plurality of consecutive pulses as long as the pre-pulse has an intensity that is not confused with other pulses. At this time, the number of consecutive pulses may be changed to a pattern such as "two (twice)" or "three (three times)". Further, the intensity of a plurality of consecutive pulses may be changed to a pattern such as "strong, weak, weak". Note that even if the wave is "weak" (weak wave), it is assumed that the intensity is such that it can be recognized as a pulse wave. That is, the pre-pulse may be any pulse that can be clearly identified as a pre-pulse. For example, a pre-pulse may be defined as a pulse with a specific intensity, number, or continuous pattern.

Furthermore, on the UWB receiving side, the steps are performed in the order of "receiving all frequencies" → "frequency decomposition" → "confirming each frequency (for each frequency)". Therefore, basically, other radio waves of different frequencies (pulses of other frequencies, etc.) weakened by interference or reflection will not be mistaken as pre-pulses. On the other hand, in order to clarify the difference between the pre-pulse and the first pulse (1st pulse), it is necessary to include the difference in intensity in the rules.

Further, depending on the situation, the difference in intensity between the weak pre-pulse and the first pulse (1st pulse) may be reduced from about "10 times" to "5 times". For example, if there is no possibility of delay, disappearance, attenuation, etc. of the first pulse (1st pulse), the intensity of the first pulse (1st pulse) can be set to about 5 times the intensity of the pre-pulse. be. In other words, the intensity of the pre-pulse may be about 1/5 of the intensity of the first pulse (1st pulse). Note that "5 times" is just one example. In reality, any magnification (N times: N is arbitrary) may be used as long as the difference in intensity is such that the weak pre-pulse and the first pulse (1st pulse) can be distinguished.

Further, it is preferable that the time difference "t" (interval) between the pre-pulse and the first pulse (1st pulse) is fixed. If the time difference is fixed, it becomes possible to determine that the pulse detected after the time difference "t" has elapsed from the time when the pre-pulse was detected is the first pulse (1st pulse). Note that the value of the time difference "t" may be changed as appropriate. Further, depending on the situation, the time difference "t" between the pre-pulse and the first pulse (1st pulse) may be varied each time.

For example, a rule regarding the number and intensity of subsequent pulses may be expressed using the intensity difference (how many times the magnitude) and time difference between the pre-pulse and the first pulse (1st pulse). In this case, the time difference between the pre-pulse and the first pulse (1st pulse) does not need to be fixed. Alternatively, the setting of the time difference value as a fixed value may be changed.

As described above, in the present embodiment, the terminal device 10 outputs a pre-pulse in UWB, before the first pulse (1st pulse), the difference from which the difference from the first pulse (1st pulse) satisfies the predetermined condition.

The pre-pulse indicates information about the subsequent pulse. For example, the presence of a pre-pulse indicates that the subsequent pulse is a first pulse. Note that the pre-pulse may indicate the number or intensity of subsequent pulses. For example, the number and intensity of pre-pulses may indicate the number and intensity of subsequent pulses.

Also, the intensity difference between the pre-pulse and the subsequent pulse varies depending on information about the subsequent pulse. Alternatively, the time difference between the pre-pulse and the subsequent pulse varies depending on information about the subsequent pulse. In this case, the time difference between the pre-pulse and the first pulse (1st pulse) does not need to be fixed. The UWB transmitting side may change the intensity difference or time difference between the pre-pulse and the first pulse (1st pulse) in accordance with changes in information regarding subsequent pulses.

For example, if a subsequent pulse indicates a context for user U, the use indicated by the subsequent pulse may be determined by the intensity, number, or sequential pattern of the pre-pulses, or by the difference in intensity or time between the pre-pulse and the subsequent pulse. The type of context of the person U (information related to what kind of context) may be indicated. Thereby, by changing the pre-pulse, it is possible to switch the type of context of the user U indicated by the subsequent pulse. That is, even if the subsequent pulses are the same, different contexts can be expressed by different pre-pulses. Furthermore, since only the pre-pulse is changed, so-called general UWB pulses such as the first pulse (1st pulse) are not affected. The common UWB pulses are free to be used for other purposes (such as representing context).

Furthermore, the terminal device 10 may output, as a pre-pulse, a pulse that differs from at least a subsequent pulse by a predetermined intensity. The pre-pulse and the subsequent pulse are pulses of the same frequency.

[2. Configuration example of information processing system]
Next, the configuration of the information processing system 1 including the server device 100 according to the embodiment will be described using FIG. 3. FIG. 3 is a diagram showing a configuration example of the information processing system 1 according to the embodiment. As shown in FIG. 3, the information processing system 1 according to the embodiment includes a terminal device 10 and a server device 100. These various devices are connected via a network N so that they can communicate by wire or wirelessly. The network N is, for example, a LAN (Local Area Network) or a WAN (Wide Area Network) such as the Internet. In the present embodiment, the network N may use UWB (Ultra Wide Band) in some areas, such as between the terminal device 10 and base stations/access points.

Further, the number of each device included in the information processing system 1 shown in FIG. 3 is not limited to what is illustrated. For example, in FIG. 3, only one terminal device 10 is shown for simplification of illustration, but this is just an example and is not limited, and there may be two or more terminal devices.

The terminal device 10 is an information processing device used by the user U. For example, the terminal device 10 may be a smart device such as a smartphone or a tablet terminal, a feature phone, a PC (Personal Computer), a PDA (Personal Digital Assistant), a game console or AV device with a communication function, a car navigation system, a smart watch, or the like. These include wearable devices such as head-mounted displays, smart glasses, etc.

The terminal device 10 also supports wireless communication networks such as LTE (Long Term Evolution), 4G (4th Generation), and 5G (5th Generation), Bluetooth (registered trademark), and wireless LAN (Local The server device 100 can be connected to the network N via short-range wireless communication such as an area network) and can communicate with the server device 100.

The server device 100 is, for example, a computer such as a PC or a blade server, or a mainframe or a workstation. Note that the server device 100 may be realized by cloud computing.

[3. Configuration example of terminal device]
Next, the configuration of the terminal device 10 will be explained using FIG. 4. FIG. 4 is a diagram showing a configuration example of the terminal device 10. As shown in FIG. As shown in FIG. 4, the terminal device 10 includes a communication section 11, a display section 12, an input section 13, a positioning section 14, a sensor section 20, a control section 30 (controller), and a storage section 40. Be prepared.

(Communication Department 11)
The communication unit 11 is connected to the network N by wire or wirelessly, and transmits and receives information to and from the server device 100 via the network N. For example, the communication unit 11 is realized by a NIC (Network Interface Card), an antenna, or the like.

(Display section 12)
The display unit 12 is a display device that displays various information such as position information. For example, the display unit 12 is a liquid crystal display (LCD) or an organic electro-luminescent display (EL display). Further, the display unit 12 is a touch panel type display, but is not limited to this.

(Input section 13)
The input unit 13 is an input device that receives various operations from the user U. For example, the input unit 13 includes buttons for inputting characters, numbers, and the like. Note that the input unit 13 may be an input/output port (I/O port), a USB (Universal Serial Bus) port, or the like. Further, when the display section 12 is a touch panel display, a part of the display section 12 functions as the input section 13. Further, the input unit 13 may be a microphone or the like that receives voice input from the user U. The microphone may be wireless.

(Positioning unit 14)
The positioning unit 14 receives a signal (radio wave) sent from a GPS (Global Positioning System) satellite, and based on the received signal, determines position information (for example, latitude and longitude). That is, the positioning unit 14 positions the terminal device 10 . Note that GPS is just one example of GNSS (Global Navigation Satellite System).

Further, the positioning unit 14 can measure the position using various methods other than GPS. For example, the positioning unit 14 may use various communication functions of the terminal device 10 to measure the position as an auxiliary positioning means for position correction and the like, as described below.

(Wi-Fi positioning)
For example, the positioning unit 14 positions the terminal device 10 using the Wi-Fi (registered trademark) communication function of the terminal device 10 or the communication network provided by each communication company. Specifically, the positioning unit 14 performs Wi-Fi communication, etc., and determines the position of the terminal device 10 by measuring the distance to nearby base stations and access points.

(Beacon positioning)
Further, the positioning unit 14 may use the Bluetooth (registered trademark) function of the terminal device 10 to measure the position. For example, the positioning unit 14 measures the position of the terminal device 10 by connecting to a beacon transmitter connected by a Bluetooth (registered trademark) function.

(geomagnetic positioning)
Furthermore, the positioning unit 14 positions the terminal device 10 based on the geomagnetic pattern of the structure measured in advance and the geomagnetic sensor included in the terminal device 10 .

(RFID positioning)
Further, for example, if the terminal device 10 has an RFID (Radio Frequency Identification) tag function equivalent to a contactless IC card used at station ticket gates, stores, etc., or has a function to read an RFID tag. In this case, the location where the terminal device 10 used the terminal device 10 is recorded together with the information that the payment was made. The positioning unit 14 may measure the position of the terminal device 10 by acquiring such information. Further, the position may be determined by an optical sensor, an infrared sensor, or the like provided in the terminal device 10.

The positioning unit 14 may position the terminal device 10 using one or a combination of the above-mentioned positioning means, if necessary.

(sensor section 20)
The sensor unit 20 includes various sensors mounted on or connected to the terminal device 10. Note that the connection may be a wired connection or a wireless connection. For example, the sensors may be a detection device other than the terminal device 10, such as a wearable device or a wireless device. In the example shown in FIG. 4, the sensor unit 20 includes an acceleration sensor 21, a gyro sensor 22, an atmospheric pressure sensor 23, an air temperature sensor 24, a sound sensor 25, an optical sensor 26, a magnetic sensor 27, and an image sensor ( camera) 28.

Note that each of the sensors 21 to 28 described above is merely an example and is not limited to the above. That is, the sensor section 20 may be configured to include a portion of each of the sensors 21 to 28, or may include other sensors such as a humidity sensor in addition to or instead of each of the sensors 21 to 28. .

The acceleration sensor 21 is, for example, a three-axis acceleration sensor, and detects the physical movement of the terminal device 10, such as the moving direction, speed, and acceleration of the terminal device 10. The gyro sensor 22 detects physical movements of the terminal device 10 such as tilt in three axes directions based on the angular velocity of the terminal device 10 and the like. The atmospheric pressure sensor 23 detects the atmospheric pressure around the terminal device 10, for example.

Since the terminal device 10 is equipped with the above-mentioned acceleration sensor 21, gyro sensor 22, atmospheric pressure sensor 23, etc., it is possible to implement technologies such as pedestrian autonomous navigation (PDR) using these sensors 21 to 23, etc. It becomes possible to measure the position of the terminal device 10 using the . This makes it possible to obtain indoor position information that is difficult to obtain using positioning systems such as GPS.

For example, a pedometer using the acceleration sensor 21 can calculate the number of steps, walking speed, and distance walked. Furthermore, by using the gyro sensor 22, it is possible to know the direction of travel of the user U, the direction of the line of sight, and the inclination of the user's body. Further, from the atmospheric pressure detected by the atmospheric pressure sensor 23, it is also possible to know the altitude and the number of floors where the terminal device 10 of the user U is located.

The temperature sensor 24 detects, for example, the temperature around the terminal device 10. The sound sensor 25 detects, for example, sounds around the terminal device 10. The optical sensor 26 detects the illuminance around the terminal device 10 . The magnetic sensor 27 detects, for example, the earth's magnetism around the terminal device 10. The image sensor 28 captures an image of the surroundings of the terminal device 10.

The above-mentioned atmospheric pressure sensor 23, temperature sensor 24, sound sensor 25, optical sensor 26, and image sensor 28 each detect atmospheric pressure, temperature, sound, and illuminance, and capture images of the surroundings, so that the terminal device 10 It is possible to detect the surrounding environment and situation. Furthermore, it is possible to improve the accuracy of the location information of the terminal device 10 based on the environment and situation around the terminal device 10.

(Control unit 30)
The control unit 30 includes, for example, a microcomputer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM, an input/output port, etc., and various circuits. Further, the control unit 30 may be configured with hardware such as an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The control section 30 includes a transmitting section 31 , a receiving section 32 , a processing section 33 , a generating section 34 , a detecting section 35 , and an estimating section 36 .

(Transmission unit 31)
The transmitting unit 31 receives, for example, various information input by the user U using the input unit 13, various information detected by the sensors 21 to 28 mounted on or connected to the terminal device 10, and information measured by the positioning unit 14. The location information of the terminal device 10 and the like can be transmitted to the server device 100 via the communication unit 11. In this embodiment, the transmitter 31 transmits UWB radio waves. That is, the transmitter 31 transmits a UWB pre-pulse, a first pulse (1st pulse), and the like.

(Receiving unit 32)
The receiving unit 32 can receive various information provided from the server device 100 and requests for various information from the server device 100 via the communication unit 11 . In this embodiment, the receiving unit 32 transmits UWB radio waves. That is, the receiving unit 32 receives a UWB pre-pulse, a first pulse (1st pulse), and the like.

(Processing unit 33)
The processing unit 33 controls the entire terminal device 10, including the display unit 12 and the like. For example, the processing unit 33 can output various information transmitted by the transmitting unit 31 and various information received from the server device 100 by the receiving unit 32 to the display unit 12 for display.

Note that the generation section 34 and the detection section 35, which will be described later, may be part of the processing section 33. Further, the processing unit 33 may function as the generation unit 34 and detection unit 35 described below by starting an application or executing a program.

(Generation unit 34)
The generation unit 34 generates a UWB radio wave waveform. At this time, the generation unit 34 sets a pre-pulse before the UWB first pulse (1st pulse) when generating the UWB radio wave waveform. That is, the generation unit 34 generates a UWB pre-pulse, a first pulse (1st pulse), and the like. Then, the generation unit 34 transmits UWB radio waves including the generated prepulse via the transmission unit 31.

The difference between the pre-pulse and the first pulse (1st pulse) satisfies a predetermined condition. For example, the intensity of the first pulse (1st pulse) is 10 times or more the intensity of the pre-pulse.

The pre-pulse also indicates the number and intensity of subsequent pulses. Note that the intensity difference between the pre-pulse and the subsequent pulse varies depending on information regarding the subsequent pulse. Also, the time difference between the pre-pulse and the subsequent pulse varies depending on information about the subsequent pulse.

The time difference between the pre-pulse and the first pulse (1st pulse) is fixed. Further, the intensity difference and time difference between the pre-pulse and the first pulse (1st pulse) indicate rules regarding the number and intensity of subsequent pulses.

(Detection unit 35)
The detection unit 35 detects prepulses included in the UWB radio waves received by the reception unit 32. At this time, the detection unit 35 may estimate the prepulse included in the UWB radio wave using the model. This model may be a model provided by the server device 100, or may be a model constructed by on-device learning.

(Estimation unit 36)
The estimation unit 36 estimates that the pulse following the UWB pre-pulse is the UWB first pulse (1st pulse). For example, when a UWB pre-pulse is detected, the estimation unit 36 may estimate that the subsequent pulse is the UWB first pulse (1st pulse). Furthermore, the estimating unit 36 sequentially calculates the pulses subsequent to the first pulse (1st pulse) of UWB, such as the second pulse (2nd pulse), the third pulse (3rd pulse), and the fourth pulse (4th pulse). It can be assumed that there is.

Note that the estimation unit 36 may estimate the UWB first pulse (1st pulse) using an estimation model that estimates the UWB pre-pulse and the first pulse (1st pulse). For example, the estimation unit 36 may estimate the UWB first pulse (1st pulse) using an estimation model that outputs a UWB pre-pulse and a first pulse (1st pulse) when a UWB radio wave is input. . Alternatively, when the estimator 36 receives the UWB radio wave and the detected pre-pulse, it estimates the UWB first pulse (1st pulse) using an estimation model that outputs the UWB first pulse (1st pulse). It's okay.

The estimating unit 36 may also estimate the context of the user U using a model (context estimation model) for estimating (inferring) the context of the user U of the terminal device 10. good. For example, the estimation unit 36 estimates the context of the user U using a model for estimating the context of the user U from the user U's browsing history, purchase history, email message history, sensor information, etc. .

Furthermore, the estimation unit 36 may estimate the surrounding context based on the shape of the UWB pulse received from the surroundings. For example, the estimation unit 36 estimates the surrounding context based on the intensity and frequency of UWB pulses received from the surroundings.

At this time, the generation unit 34 may generate a UWB pulse according to the estimated user U or surrounding context. In this case as well, the generation unit 34 sets a pre-pulse before the UWB first pulse (1st pulse) when generating the UWB radio wave waveform. Then, the generation unit 34 transmits UWB radio waves including the generated prepulse via the transmission unit 31.

(Storage unit 40)
The storage unit 40 is realized by, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or an optical disk. Ru. The storage unit 40 stores various programs, various data, and the like.

[4. Configuration example of server device]
Next, the configuration of the server device 100 according to the embodiment will be described using FIG. 5. FIG. 5 is a diagram showing a configuration example of the server device 100 according to the embodiment. As shown in FIG. 5, the server device 100 includes a communication section 110, a storage section 120, and a control section 130.

(Communication Department 110)
The communication unit 110 is realized by, for example, a NIC (Network Interface Card). Further, the communication unit 110 is connected to the network N by wire or wirelessly.

(Storage unit 120)
The storage unit 120 is realized by, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as an HDD, an SSD, or an optical disk. As shown in FIG. 5, the storage unit 120 includes a user information database 121 and a history information database 122.

(User information database 121)
The user information database 121 stores user information regarding the user U. For example, the user information database 121 stores various information such as user U's attributes. FIG. 6 is a diagram showing an example of the user information database 121. In the example shown in FIG. 6, the user information database 121 includes items such as "user ID (identifier),""age,""gender,""home,""worklocation," and "interest."

“User ID” indicates identification information for identifying user U. Note that the "user ID" may be user U's contact information (telephone number, email address, etc.), or may be identification information for identifying user U's terminal device 10.

Moreover, "age" indicates the age of the user U identified by the user ID. Note that the "age" may be information indicating the specific age of the user U (for example, 35 years old, etc.), or may be information indicating the age of the user U (for example, 30s, etc.) . Alternatively, the "age" may be information indicating the date of birth of the user U, or may be information indicating the generation of the user U (for example, born in the 1980s). Furthermore, “gender” indicates the gender of the user U identified by the user ID.

Moreover, "home" indicates the location information of the home of the user U identified by the user ID. In the example shown in FIG. 6, "home" is illustrated as an abstract code such as "LC11," but it may also be latitude and longitude information. Furthermore, for example, "home" may be a region name or address.

Moreover, "work place" indicates the location information of the work place (school in the case of a student) of the user U identified by the user ID. In the example shown in FIG. 6, the "work location" is illustrated as an abstract code such as "LC12," but it may also be latitude and longitude information. Further, for example, the "work location" may be a region name or address.

Moreover, "interest" indicates the interest of the user U identified by the user ID. That is, "interest" indicates an object in which the user U identified by the user ID has a high interest. For example, "interest" may be a search query (keyword) that the user U inputs into a search engine. In the example shown in FIG. 6, one "interest" is shown for each user U, but there may be a plurality of "interests".

For example, in the example shown in FIG. 6, the age of the user U identified by the user ID "U1" is "20s", and the gender is "male". Further, for example, the user U identified by the user ID "U1" indicates that his home is "LC11". Further, for example, the user U identified by the user ID "U1" indicates that the work location is "LC12". Further, for example, the user U identified by the user ID "U1" indicates that he is interested in "sports."

Here, in the example shown in FIG. 6, abstract values such as "U1", "LC11", and "LC12" are used for illustration, but "U1", "LC11", and "LC12" have specific values. It is assumed that information such as character strings and numerical values is stored. Below, abstract values may be illustrated in diagrams related to other information as well.

Note that the user information database 121 is not limited to the above, and may store various information depending on the purpose. For example, the user information database 121 may store various information regarding the terminal device 10 of the user U. In addition, the user information database 121 includes information such as demographic (demographic attributes), psychographic (psychological attributes), geographic (geographical attributes), behavioral (behavioral attributes), etc. of user U. Information regarding attributes may also be stored. For example, the user information database 121 includes name, family composition, place of birth (locality), occupation, position, income, qualifications, type of residence (single-family house, condominium, etc.), presence or absence of a car, commuting/commuting time, commuting/commuting, etc. Memorizes information such as routes, commuter pass sections (stations, lines, etc.), frequently used stations (other than the stations closest to your home or work), lessons (location, time zone, etc.), hobbies, interests, lifestyle, etc. It's okay.

(History information database 122)
The history information database 122 stores various information related to history information (log data) indicating the actions of the user U. FIG. 7 is a diagram showing an example of the history information database 122. In the example shown in FIG. 7, the history information database 122 has items such as "user ID", "location history", "search history", "browsing history", "purchase history", and "posting history".

“User ID” indicates identification information for identifying user U. Further, “position history” indicates a position history that is a history of the user U's position and movement. Further, “search history” indicates a search history that is a history of search queries input by the user U. In addition, “browsing history” indicates a browsing history that is a history of contents that the user U has viewed. Moreover, "purchase history" indicates a purchase history that is a history of purchases by user U. Moreover, "posting history" indicates a posting history that is a history of postings by user U. Note that the "posting history" may include questions regarding user U's belongings.

For example, in the example shown in FIG. 7, the user U identified by the user ID "U1" moves as per "location history #1", searches as per "search history #1", and searches as per "view history #1". This indicates that the content was viewed according to "history #1", a predetermined product, etc. was purchased at a predetermined store etc. according to "purchase history #1", and the content was posted according to "posting history".

Here, in the example shown in FIG. 7, abstracts such as "U1", "location history #1", "search history #1", "browsing history #1", "purchase history #1" and "posting history #1" are used. Although the figures are illustrated using ``U1'', ``Location history #1'', ``Search history #1'', ``Browsing history #1'', ``Purchase history #1'' and ``Posting history #1'', It is assumed that information such as specific character strings and numerical values is stored.

Note that the history information database 122 is not limited to the above, and may store various information depending on the purpose. For example, the history information database 122 may store the user U's usage history of a predetermined service. Further, the history information database 122 may store the user U's visit history to a physical store, visit history to a facility, or the like. Further, the history information database 122 may store the payment history of user U's payment using the terminal device 10 (electronic payment).

(Control unit 130)
Returning to FIG. 5, the explanation will be continued. The control unit 130 is a controller, and controls the server device 100 using, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field Programmable Gate Array). This is realized by executing various programs (corresponding to an example of an information processing program) stored in an internal storage device using a storage area such as a RAM as a work area. In the example shown in FIG. 5, the control unit 130 includes an acquisition unit 131, a collection unit 132, a learning unit 133, and a providing unit 134.

(Acquisition unit 131)
The acquisition unit 131 acquires a search query input by the user U. For example, when the user U inputs a search query into a search engine or the like and performs a keyword search, the acquisition unit 131 acquires the search query via the communication unit 110. That is, the acquisition unit 131 acquires, via the communication unit 110, a keyword input by the user U into a search window of a search engine, site, or application.

The acquisition unit 131 also acquires user information regarding the user U via the communication unit 110. For example, the acquisition unit 131 acquires identification information indicating the user U (user ID, etc.), location information of the user U, attribute information of the user U, etc. from the terminal device 10 of the user U. Further, the acquisition unit 131 may acquire identification information indicating the user U, attribute information of the user U, etc. at the time of user U's user registration. The acquisition unit 131 then registers the user information in the user information database 121 of the storage unit 120.

Further, the acquisition unit 131 acquires various types of history information (log data) indicating the behavior of the user U via the communication unit 110. For example, the acquisition unit 131 acquires various types of history information indicating the behavior of the user U from the terminal device 10 of the user U or from various servers based on the user ID or the like. The acquisition unit 131 then registers various types of history information in the history information database 122 of the storage unit 120.

(Collection unit 132)
The collection unit 132 collects information regarding the user U and surrounding context (situation) from the terminal device 10 of each user U via the communication unit 110. Note that the collecting unit 132 may aggregate information regarding the user U and the surrounding context, and store the aggregated results in the storage unit 120.

(Learning Department 133)
The learning unit 133 performs machine learning and constructs a model (context estimation model) for estimating (inferring) the context of the user U. For example, the learning unit 133 may perform machine learning and construct a model for estimating the context of the user U from the user U's browsing history, purchase history, email/message history, sensor information, etc. . Further, the learning unit 133 may perform machine learning and construct a model for estimating the context of the source from the shape (intensity, frequency, etc.) of UWB pulses received from the surroundings.

(Providing unit 134)
The providing unit 134 provides a model for estimating (inferring) the context of the user U (context estimation model) to the terminal device 10 of each user U via the communication unit 110.

Note that the providing unit 134 may provide the terminal device 10 of each user U, via the communication unit 110, with a table that associates contexts with combinations of pulse shapes (intensity, frequency, etc.).

[5. Processing procedure]
Next, a processing procedure by the terminal device 10 according to the embodiment will be described using FIG. 8. FIG. 8 is a flowchart showing the processing procedure according to the embodiment. Note that the processing procedure shown below is repeatedly executed by the control unit 30 of the terminal device 10.

For example, the generating unit 34 of the terminal device 10 (10B, 10C) around the user U generates a UWB radio wave including a prepulse, and transmits it via the transmitting unit 31 of the terminal device 10 (step S101). For example, the generation unit 34 encodes information indicating the context around the terminal device 10 into a UWB pulse, adds a pre-pulse to the beginning, and outputs the pulse. Note that the surrounding terminal devices 10 may be the transmitter 200.

Next, the detection unit 35 of the terminal device 10 (10A) of the user U detects a prepulse included in the UWB radio wave received by the reception unit 32 of the terminal device 10 (step S102). For example, the detection unit 35 detects a prepulse included in the UWB radio waves that the reception unit 32 of the terminal device 10 receives from surrounding terminal devices 10 . Note that the receiving unit 32 may receive UWB radio waves by broadcast from other terminal devices 10.

Next, the estimation unit 36 of the terminal device 10 (10A) of the user U estimates that the pulse subsequent to the UWB pre-pulse is the first UWB pulse (step S103). Furthermore, the estimation unit 36 may estimate the context of the user U.

Next, the processing unit 33 of the terminal device 10 (10A) of the user U processes the UWB pulses after the first UWB pulse as UWB pulses (step S104). For example, the processing unit 33 processes the UWB pulse as information indicating the surrounding context.

Next, the processing unit 33 of the terminal device 10 (10A) of the user U transmits information indicating the context of the user U and the surroundings to the server device 100 via the transmitting unit 31 of the terminal device 10 ( Step S105). At this time, the generation unit 34 may encode information indicating the context of the user U and the surroundings into a UWB pulse, and transmit it to the server device 100 via the transmission unit 31 of the terminal device 10.

Next, the collection unit 132 of the server device 100 collects information regarding the user U and the surrounding context from the terminal device 10 of each user U via the communication unit 110 (step S106).

Next, the learning unit 133 of the server device 100 performs machine learning and constructs a model (context estimation model) for estimating (inferring) the context of the user U (step S107).

Next, the providing unit 134 of the server device 100 provides a model (context estimation model) for estimating (inferring) the context of the user U to the terminal device 10 of each user U via the communication unit 110. (Step S108).

[6. Modified example]
The terminal device 10 and server device 100 described above may be implemented in various different forms other than the above embodiments. Therefore, a modification of the embodiment will be described below.

In the above embodiment, part or all of the processing executed by the server device 100 may actually be executed by the terminal device 10. For example, the process may be completed stand-alone (by the terminal device 10 alone). In this case, it is assumed that the terminal device 10 has the functions of the server device 100 in the above embodiment. Further, in the embodiment described above, since the terminal device 10 cooperates with the server device 100, it appears to the user U that the terminal device 10 is also executing the processing of the server device 100. That is, from another point of view, it can be said that the terminal device 10 includes the server device 100.

Further, in the above embodiment, part or all of the processing executed by the terminal device 10 may actually be executed by the server device 100. For example, like the terminal device 10, the server device 100 may also receive UWB radio waves, detect a UWB pre-pulse, and estimate that the pulse following the pre-pulse is the UWB first pulse. Further, like the terminal device 10, the server device 100 may also set a pre-pulse before the first UWB pulse when generating a UWB radio wave waveform, and transmit the UWB radio wave including the pre-pulse. .

Further, the server device 100 may use a model that estimates a pre-pulse included in UWB radio waves, an estimation model that outputs a UWB pre-pulse and a first pulse (1st pulse) when a UWB radio wave is input, or a model that estimates a pre-pulse included in UWB radio waves. An estimation model or the like may be constructed that outputs a UWB first pulse (1st pulse) when the detected pre-pulse is input.

Further, in the above embodiment, the terminal device 10 may be a UWB-compatible base station, access point, other relay equipment, etc., or a UWB-compatible house/building, car, home appliance, electronic device, etc. etc. may be used.

Further, in the above embodiment, the terminal device 10 of the user U may acquire a model (context estimation model) for estimating (inferring) the context of the user U from the server device 100, or may obtain an on-device The model may be reconstructed through repeated machine learning to improve estimation accuracy.

Further, in the above embodiment, the terminal device 10 of the user U may transmit information regarding the context of the user U and surrounding contexts collected from surrounding terminal devices 10 to the server device 100.

[7. effect〕
As described above, the information processing device (terminal device 10) according to the present application includes a reception unit that receives UWB radio waves, a detection unit that detects a UWB pre-pulse, and a detection unit that detects a pulse subsequent to the pre-pulse as a UWB first pulse. an estimating unit that estimates that .

Further, the information processing device according to the present application includes a generation unit that sets a pre-pulse before the first UWB pulse when generating the waveform of the UWB radio wave, and a transmission unit that transmits the UWB radio wave including the pre-pulse. Furthermore, it is equipped with.

The difference between the pre-pulse and the first pulse satisfies a predetermined condition.

The intensity of the first pulse is at least 10 times the intensity of the pre-pulse.

The pre-pulse indicates the number and intensity of subsequent pulses.

The intensity difference between the pre-pulse and the subsequent pulse depends on the information about the subsequent pulse.

The time difference between the pre-pulse and the subsequent pulse varies depending on the information about the subsequent pulse.

The time difference between the pre-pulse and the first pulse is fixed.

The intensity and time differences between the pre-pulse and the first pulse dictate the rules for the number and intensity of subsequent pulses.

By any one or a combination of the above-mentioned processes, the information processing device according to the present application generates a weak pre-pulse (UWB pre-pulse) before the first UWB pulse (1st pulse), so that the subsequent pulse of the pre-pulse is It is possible to clarify that it is the first pulse (1st pulse) and improve the accuracy of detection and recognition of the UWB first pulse (1st pulse).

[8. Hardware configuration]
Further, the terminal device 10 and the server device 100 according to the embodiments described above are realized, for example, by a computer 1000 having a configuration as shown in FIG. The following will explain the terminal device 10 as an example. FIG. 9 is a diagram showing an example of the hardware configuration. The computer 1000 is connected to an output device 1010 and an input device 1020, and a calculation device 1030, a primary storage device 1040, a secondary storage device 1050, an output I/F (Interface) 1060, an input I/F 1070, and a network I/F 1080 are connected to a bus. 1090.

The arithmetic unit 1030 operates based on programs stored in the primary storage device 1040 and the secondary storage device 1050, programs read from the input device 1020, and performs various processes. The arithmetic device 1030 is realized by, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or the like.

The primary storage device 1040 is a memory device such as a RAM (Random Access Memory) that temporarily stores data used by the calculation device 1030 for various calculations. Further, the secondary storage device 1050 is a storage device in which data used by the arithmetic unit 1030 for various calculations and various databases are registered, and includes a ROM (Read Only Memory), an HDD (Hard Disk Drive), and an SSD (Solid Disk Drive). This is realized using flash memory, etc. The secondary storage device 1050 may be a built-in storage or an external storage. Further, the secondary storage device 1050 may be a removable storage medium such as a USB (Universal Serial Bus) memory or an SD (Secure Digital) memory card. Further, the secondary storage device 1050 may be a cloud storage (online storage), a NAS (Network Attached Storage), a file server, or the like.

The output I/F 1060 is an interface for transmitting information to be output to the output device 1010 that outputs various information such as a display, a projector, and a printer. (Digital Visual Interface) and HDMI (registered trademark) (High Definition Multimedia Interface). Further, the input I/F 1070 is an interface for receiving information from various input devices 1020 such as a mouse, keyboard, keypad, button, scanner, etc., and is realized by, for example, a USB or the like.

Further, the output I/F 1060 and the input I/F 1070 may be wirelessly connected to the output device 1010 and the input device 1020, respectively. That is, output device 1010 and input device 1020 may be wireless devices.

Moreover, the output device 1010 and the input device 1020 may be integrated like a touch panel. In this case, the output I/F 1060 and the input I/F 1070 may also be integrated as an input/output I/F.

Note that the input device 1020 is, for example, an optical recording medium such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a PD (Phase change rewritable disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), or a tape. It may be a device that reads information from a medium, a magnetic recording medium, a semiconductor memory, or the like.

Network I/F 1080 receives data from other devices via network N and sends it to computing device 1030, and also sends data generated by computing device 1030 to other devices via network N.

Arithmetic device 1030 controls output device 1010 and input device 1020 via output I/F 1060 and input I/F 1070. For example, the arithmetic device 1030 loads a program from the input device 1020 or the secondary storage device 1050 onto the primary storage device 1040, and executes the loaded program.

For example, when the computer 1000 functions as the terminal device 10, the arithmetic unit 1030 of the computer 1000 realizes the functions of the control unit 30 by executing a program loaded onto the primary storage device 1040. Further, the arithmetic device 1030 of the computer 1000 may load a program obtained from another device via the network I/F 1080 onto the primary storage device 1040, and execute the loaded program. Further, the arithmetic device 1030 of the computer 1000 may cooperate with other devices via the network I/F 1080, and may call and use program functions, data, etc. from other programs of other devices.

[9. others〕
Although the embodiments of the present application have been described above, the present invention is not limited to the contents of these embodiments. Furthermore, the above-mentioned components include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are in a so-called equivalent range. Furthermore, the aforementioned components can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the constituent elements can be made without departing from the gist of the embodiments described above.

Further, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or the processes described as being performed manually can be performed manually. All or part of this can also be performed automatically using known methods. In addition, information including the processing procedures, specific names, and various data and parameters shown in the above documents and drawings may be changed arbitrarily, unless otherwise specified. For example, the various information shown in each figure is not limited to the illustrated information.

Furthermore, each component of each device shown in the drawings is functionally conceptual, and does not necessarily need to be physically configured as shown in the drawings. In other words, the specific form of distributing and integrating each device is not limited to what is shown in the diagram, and all or part of the devices can be functionally or physically distributed or integrated in arbitrary units depending on various loads and usage conditions. Can be integrated and configured.

For example, the server device 100 described above may be realized by a plurality of server computers, and depending on the function, it may be realized by calling an external platform etc. using an API (Application Programming Interface), network computing, etc. Can be changed flexibly.

Furthermore, the above-described embodiments and modifications can be combined as appropriate within a range that does not conflict with the processing contents.

Further, the above-mentioned "section, module, unit" can be read as "means", "circuit", etc. For example, the acquisition unit can be read as an acquisition means or an acquisition circuit.

1 Information processing system 10 Terminal device 30 Control unit 31 Transmission unit 32 Receiving unit 33 Processing unit 34 Generation unit 35 Detection unit 36 Estimation unit 100 Server device 110 Communication unit 120 Storage unit 121 User information database 122 History information database 130 Control unit 131 Acquisition unit 132 Collection unit 133 Learning unit 134 Providing unit 200 Transmitter

Claims (11)

a receiving unit that receives UWB radio waves;
a detection unit that detects a UWB pre-pulse;
an estimator that estimates a pulse subsequent to the pre-pulse to be a UWB first pulse;
An information processing device comprising: a generation unit that sets a pre-pulse before the first UWB pulse when generating a UWB radio wave waveform;
a transmitter that transmits UWB radio waves including the prepulse;
The information processing device according to claim 1, further comprising: The information processing device according to claim 1 or 2, wherein a difference between the pre-pulse and the first pulse satisfies a predetermined condition. The information processing device according to any one of claims 1 to 3, wherein the intensity of the first pulse is 10 times or more the intensity of the pre-pulse. The information processing device according to any one of claims 1 to 4, wherein the pre-pulse indicates the number and intensity of subsequent pulses. The information processing device according to any one of claims 1 to 5, wherein the intensity difference between the pre-pulse and the subsequent pulse differs depending on information regarding the subsequent pulse. The information processing device according to any one of claims 1 to 6, wherein the time difference between the pre-pulse and the subsequent pulse varies depending on information regarding the subsequent pulse. The information processing device according to any one of claims 1 to 7, wherein a time difference between the pre-pulse and the first pulse is fixed. The information processing device according to any one of claims 1 to 8, wherein an intensity difference and a time difference between the pre-pulse and the first pulse indicate a rule regarding the number and intensity of subsequent pulses. An information processing method executed by an information processing device, the method comprising:
a reception process of receiving UWB radio waves;
a detection step of detecting a UWB pre-pulse;
estimating a pulse subsequent to the pre-pulse to be a UWB first pulse;
An information processing method characterized by comprising: Receiving procedure for receiving UWB radio waves,
a detection procedure for detecting a UWB prepulse;
an estimation procedure for estimating a pulse subsequent to the pre-pulse to be a UWB first pulse;
An information processing program that allows a computer to execute.

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