Wireless communication system, wireless communication method, and wireless communication device

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By detecting user behavior and location information in the terminal device and dynamically adjusting wireless communication coverage and resource allocation, the problem of difficulty in optimizing user subjective experience in the prior art is solved, and more efficient wireless communication quality is achieved.

JP7670157B2Active Publication Date: 2025-04-30NIPPON TELEGRAPH & TELEPHONE CORP

View PDF 6 Cites 0 Cited by

Patent Information

Application Number: JP2023554221
Authority / Receiving Office: JP · JP
Patent Type: Patents
Current Assignee / Owner
Filing Date: 2021-10-22
Publication Date: 2025-04-30
Estimated Expiration: 2041-10-22

AI Technical Summary

Technical Problem

The prior art is difficult to effectively optimize wireless communication quality based on the user's subjective experience, especially in high-load environments, and it is difficult to concentrate radio resources where they are really needed.

Method used

By detecting user behaviors in the terminal device, such as shaking or clicking, and combining location information, the coverage range and resource allocation are determined to dynamically adjust the coverage and quality of wireless communications.

Benefits of technology

It realizes dynamic adjustment of wireless communication resources based on the user's subjective experience, improves communication quality, especially in high-load environments, which can more effectively concentrate resources where needed.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure 0007670157000001
Figure 0007670157000002
Figure 0007670157000003

Patent Text Reader

Abstract

This radio communication system comprises: a first base station that forms a coverage area of a first frequency band; a second base station that forms a coverage area of a second frequency band differing from the first frequency band, the coverage area of the second frequency band overlapping the coverage area of the first frequency band and being smaller than the coverage area of the first frequency band; a terminal that can connect to both the first base station and the second base station; and a radio communication device that is connected to both the first base station and the second base station and controls the coverage area of the second base station. The terminal is provided with: a user action detection unit that detects a user action; a user action information acquisition unit that, when the user action information acquisition unit has assessed that the user action detected by the user action detection unit is a given user action that has been performed on the terminal, acquires information regarding said user action; and a position estimation unit that estimates positional information of the terminal. The radio communication device is provided with a determination unit that determines the coverage area covered by the second base station on the basis of the information regarding the user action and the positional information, which are acquired from the terminal via the first base station or the second base station.

Need to check novelty before this filing date? Find Prior Art

Description

[Technical field]

[0001] The present invention relates to a wireless communication system, a wireless communication method, and a wireless communication device. [Background technology]

[0002] In recent years, data traffic in mobile communications has been increasing rapidly due to the spread of high-speed wireless access environments such as LTE (Long Term Evolution) and LTE-Advanced, as well as the popularity of smartphones and tablet devices. In particular, video viewing is expected to increase at an annual rate of 55% from 2015 to 2021, and is expected to account for approximately 70% of all mobile data traffic in 2021. In addition to video, mobile communications applications are becoming more diverse, including web page browsing, SNS (Social Networking Service), and VoIP (Voice over Internet Protocol).

[0003] In recent years, Quality of Experience (QoE), which indicates the quality of user experience, has been drawing attention as an index that influences the value of a network. Quality of Service (QoS), which indicates the quality of service provided by a network, is a measure of service quality from the perspective of telecommunications carriers and service providers, including packet loss, packet delays, and fluctuations in packet arrival times. Meanwhile, QoE, which has been attracting attention in recent years, is a measure of the service quality of an application as perceived by the user, including interruptions in video playback and web download times.

[0004] In mobile communications, where traffic is increasing and diversifying, it is important to maintain and improve QoE in order for users to continue using the service. In other words, considering that users tend to continue using a service as long as a certain QoE is satisfied and that wireless resources are limited, it is important to maintain and improve the certain QoE rather than simply improving QoS in order to continue using the service.

[0005] However, in a high-load environment where users are densely concentrated, there are cases where sufficient radio resources cannot be allocated. In such an environment, the required QoE (QoE is a guideline to be achieved to allow users to continue using applications such as the Web and video) cannot be satisfied. For this reason, radio resource control methods for LTE base stations based on the application required quality necessary to satisfy the required QoE have been proposed.

[0006] FIG. 16 is a diagram showing an overview of a conventional radio resource control method for an LTE base station based on application required quality necessary to satisfy a required QoE.

[0007] In FIG. 16, the configuration of the mobile network 100 is a HetNet (Heterogeneous Network) configuration in which, in addition to the conventional macro cell 101, a large number of small cells 102 are additionally installed in areas where users are densely concentrated, in order to efficiently accommodate increasing traffic.

[0008] The macro cell 101 is composed of an eNodeB (evolved Node B: LTE base station) 103 .

[0009] The small cells 102 are configured with a centralized radio access network (C-RAN) 104, and each small cell accommodates a user equipment (UE) 105.

[0010] C-RAN 104 consists of a DU (Distributed Unit) 106 that centralizes radio resource control of Layer 2 (data link layer), and a RU (Radio Unit) 107 that processes Layer 1 (physical layer) based on the radio resource control by DU 106.

[0011] The DU 106 and the RU 107 are connected via an optical fiber fronthaul. There is one small cell 102 per RU 107. The DU 106 and eNodeB 103 are connected to a relay server 109 outside the mobile network via an EPC (Evolved Packet Core: LTE core network) 108 of the core network.

[0012] The Internet 110 is made up of a cloud server 111 and a relay server 109 that distribute application services such as video and Web services.

[0013] The relay server 109 operates as a transparent proxy in TCP / IP (Transmission Control Protocol / Internet Protocol) communication, and separates and relays an upstream TCP (Transmission Control Protocol) connection on the cloud server side and a downstream TCP connection on the mobile network side.

[0014] In Non-Patent Document 1, the relay server 109 grasps the required QoE of each application, and analyzes the quality required by the application (e.g., the transmission completion deadline) from the current state of traffic for the entire content. The relay server 109 analyzes the quality required by the application for each IP (Internet Protocol) packet, adds it to the IP header, and notifies the DU 106 or eNodeB 103. The DU 106 or eNodeB 103 that receives the notification collects the quality required by the application and uses it for radio resource control.

[0015] For example, the QoE for video is evaluated based on the interruption of playback caused by the depletion of the buffer on the UE 105 side during video viewing, and the occurrence of an interruption in playback is considered to be a degradation of QoE. Also, the QoE for the Web is evaluated based on the download time from accessing a Web page until all information is displayed, and the QoE is considered to be degraded when the download time exceeds a predetermined threshold. QoE degradation means that the required QoE cannot be met, and as a result, the user will stop using the application and the throughput of the entire system will also decrease.

[0016] That is, in Non-Patent Document 1, the relay server 109 grasps the required QoE of the application, analyzes the quality required by the application, notifies the eNodeB 103 or the DU 106, and improves the QoE by controlling the radio resources and the connected cell. The DU 106 suppresses the deterioration of the QoE by controlling the radio resources. The expected time until the completion of the transmission is calculated from the buffer size and the allocated resource block (RB), and the expected time is compared with the transmission completion deadline that satisfies the QoE, and the resource allocation is adjusted so that the transmission completion deadline is not exceeded. Also, when a high-load cell exists, the connection of a user with a margin in QoE is preferentially switched to another cell, improving the QoE of the entire users.

[0017] In addition, Non-Patent Document 2 proposes a mechanism for improving the indoor environment by visualizing the indoor environment and using gamification elements to guide users in responding to environmental changes. [Prior art documents] [Non-patent literature]

[0018] [Non-Patent Document 1] Morita, Kumagai, Nobuyoshi, "Proposal of a radio resource control method for LTE base stations based on QoE", IEICE Technical Report RCS2016-209 [Non-Patent Document 2] Suzuki, Iwai, "Visualization of indoor environment using sensors and promotion of improvement through gamification", IEICE Technical Report ASN2018-76 Summary of the Invention [Problem to be solved by the invention]

[0019] However, in Non-Patent Document 1, the user's QoE is estimated by the relay server 109, and the actual user experience is not taken into consideration. In addition, the degradation of the user's QoE is influenced by a combination of many factors, such as not only the reception level but also delay and jitter, and is ultimately subjective to the user, so it is difficult to determine whether the communication time actually has an effect. Therefore, with the method of Non-Patent Document 1, it is difficult to grasp and improve the user's subjective QoE (i.e., the user's subjective communication quality).

[0020] Furthermore, in Non-Patent Document 2, gamification elements are used, but they are used for indoor environment monitoring, not for wireless communication.

[0021] Therefore, the present disclosure aims to understand user-subjective communication quality based on specific user behavior and provide feedback to concentrate wireless resources on users or areas that truly require them, thereby improving user-subjective communication quality. [Means for solving the problem]

[0022] A wireless communication system according to one embodiment includes a first base station that forms coverage of a first frequency band, a second base station that forms coverage of a second frequency band different from the first frequency band in an area smaller than the first frequency band by superimposing it on the coverage of the first frequency band, a terminal that can be connected to both the first base station and the second base station, and a wireless communication device that is connected to both the first base station and the second base station and controls the coverage of the second base station, wherein the terminal includes a user behavior detection unit that detects user behavior, a user behavior information acquisition unit that acquires information about the user behavior when it is determined that the user behavior detected by the user behavior detection unit is a specified user behavior performed on the terminal, and a location estimation unit that estimates location information of the terminal, and the wireless communication device includes a determination unit that determines the coverage to be covered by the second base station based on the user behavior information and the location information acquired from the terminal via the first base station or the second base station.

[0023] In addition, in a wireless communication system according to one embodiment, the specified user action is the user shaking the terminal or the user tapping the terminal, and the information of the user action may be vibration information caused by the user shaking the terminal or tapping the terminal by the user.

[0024] In addition, in a wireless communication system according to one embodiment, the determination unit may identify an area of coverage covered by the second base station based on information on user behavior, or determine the distribution of time resources of multiple areas covered by the second base station.

[0025] In addition, in a wireless communication system according to one embodiment, the system may further include a plurality of relay devices that relay to a second base station of a second frequency band, the terminal is connected to the second base station via one of the plurality of relay devices, and the determination unit may determine the coverage to be covered by the plurality of relay devices instead of the second base station.

[0026] In addition, in a wireless communication system according to one embodiment, a distribution server connected to the wireless communication device is further provided, and the distribution server includes a calculation unit that creates an influence map that can be displayed in GUI format on a terminal, showing predicted values of coverage and communication speed at each point after control by the wireless communication device, based on information acquired from the wireless communication device, and a communication unit that distributes the influence map created by the calculation unit to the terminal, and the terminal may further include a display unit that displays the influence map distributed from the distribution server in real time in GUI format.

[0027] In the wireless communication system according to an aspect, the distribution server may repeatedly create the influence map and distribute the created influence map to the terminal at predetermined time intervals.

[0028] A wireless communication method according to one embodiment is a wireless communication method in a wireless communication system including a first base station that forms coverage of a first frequency band, a second base station that forms coverage of a second frequency band different from the first frequency band in an area smaller than the first frequency band by superimposing it on the coverage of the first frequency band, a terminal that can be connected to both the first base station and the second base station, and a wireless communication device that is connected to both the first base station and the second base station and controls the coverage of the second base station, wherein the terminal detects user behavior, and when it determines that the detected user behavior is a predetermined user behavior performed on the terminal, acquires information about the user behavior and estimates location information of the terminal, and the wireless communication device determines the coverage to be covered by the second base station based on the user behavior information and location information acquired from the terminal via the first base station or the second base station.

[0029] A wireless communication device according to one embodiment is a wireless communication device in a wireless communication system including a first base station that forms coverage of a first frequency band, a second base station that forms coverage of a second frequency band different from the first frequency band in an area smaller than the first frequency band by superimposing it on the coverage of the first frequency band, a terminal that can be connected to both the first base station and the second base station, and a wireless communication device that is connected to both the first base station and the second base station and controls the coverage of the second base station, wherein the wireless communication device is characterized in that it includes a determination unit that acquires, from the terminal via the first base station or the second base station, information on user behavior acquired when the terminal detects user behavior and determines that the detected user behavior is a predetermined user behavior performed on the terminal, and location information of the terminal estimated by the terminal, and determines the coverage to be covered by the second base station based on the acquired user behavior information and location information. Effect of the Invention

[0030] According to the present disclosure, by grasping the user-subjective communication quality based on the user's specified behavior and feeding it back, wireless resources can be concentrated on users or areas that truly require them, thereby improving the user-subjective communication quality. [Brief description of the drawings]

[0031] [Figure 1] 1 is a diagram illustrating an example of the configuration of a wireless communication system according to a first embodiment. [Diagram 2] 2 is a diagram illustrating an example of configurations of a terminal, a base station, and a control unit illustrated in FIG. 1. [Diagram 3] FIG. 3 is a diagram showing a processing flow of the wireless communication system shown in FIGS. 1 and 2. [Figure 4] FIG. 4 is a diagram illustrating an example of the operation of the wireless communication system illustrated in FIGS. 1 to 3. [Diagram 5] FIG. 13 is a diagram showing the cumulative duration (or score) for each terminal. [Figure 6] FIG. 11 is a diagram illustrating an example of the configuration of a wireless communication system according to a second embodiment. [Figure 7]7 is a diagram illustrating an example of configurations of the terminal, the base station, the control unit, and the relay device illustrated in FIG. 6. [Figure 8] FIG. 8 is a diagram showing a processing flow of the wireless communication system shown in FIGS. 6 and 7. [Figure 9] FIG. 9 is a diagram illustrating an example of the operation of the wireless communication system illustrated in FIGS. 6 to 8. [Figure 10] FIG. 13 is a diagram showing the cumulative duration (or score) for each terminal. [Figure 11] FIG. 11 is a diagram illustrating an example of the configuration of a wireless communication system according to a third embodiment. [Figure 12] 12 is a diagram illustrating an example of the configuration of the terminal, the base station, the control unit, and the distribution server illustrated in FIG. 11. [Figure 13] FIG. 13 is a diagram showing a processing flow of the wireless communication system shown in FIGS. 11 and 12. [Figure 14] FIG. 13 is a diagram showing an example of a GUI influence map displayed on a terminal. [Figure 15] 15 is a conceptual diagram showing an example of the hardware configuration of a processing circuit included in the terminal, the control unit, and the distribution server according to the embodiment shown in FIGS. 1 to 14. FIG. [Figure 16] FIG. 1 is a diagram showing an overview of a radio resource control method for an LTE base station based on application required quality necessary to satisfy a conventional required QoE. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, embodiments of a wireless communication system, a wireless communication method, and a wireless communication device disclosed herein will be described with reference to the drawings.

[0033] <Configuration of the First Embodiment> 1 is a diagram showing an example of the configuration of a wireless communication system 1 according to the first embodiment. As shown in FIG. 1, the wireless communication system 1 includes a first terminal 21, a second terminal 22, a first base station 31, a second base station 32, and a control unit 40.

[0034] The first terminal 21 and the second terminal 22 are communication terminals that can be connected to both the first base station 31 and the second base station 32, respectively. The first terminal 21 and the second terminal 22 are always connected to the first base station 31. In the following, in this embodiment, the first terminal 21 and the second terminal 22 are collectively referred to as "terminal 20". The terminal 20 has a sensing function for detecting the behavior of a user. The sensing function of the terminal 20 is an example of a "user behavior detection unit" or a "vibration detection unit".

[0035] The first base station 31 is a base station or a remote station, and forms a coverage area (a range in which radio waves can be received) 11 of the frequency band f1. The coverage area 11 of the frequency band f1 is an area X in FIG. 1. The frequency band f1 is an example of the "first frequency band."

[0036] The second base station 32 is a base station or a remote station, and forms a coverage 12 of the frequency band f2. The coverage 12 of the frequency band f2 is arranged in a smaller area than the coverage 11 of the frequency band f1 in FIG. 1, overlapping the coverage 12 of the second base station 32 with the coverage 11 of the first base station 31, thereby improving communication quality. The second base station 32 can set any one of areas A, B, and C in FIG. 1 as the coverage 12, and may be able to switch areas in a time-division manner, for example. The frequency band f2 is an example of a "second frequency band." In addition, in the following, in this embodiment, the first base station 31 and the second base station 32 are collectively referred to as "base station 30."

[0037] The control unit (wireless communication device) 40 is, for example, an external server, a CU (Central Unit: aggregate station), a DU, or a gNodeB (next generation Node B: 5G base station), and is connected to the first base station 31 and the second base station 32. The control unit 40 is an example of a "wireless communication device".

[0038] Fig. 2 is a diagram showing an example of the configuration of the terminal 20, the base station 30, and the control unit 40 shown in Fig. 1. Note that in Fig. 2, typical configurations of the normal terminal 20, the base station 30, and the control unit 40 are omitted from the illustration.

[0039] The terminal 20 is, for example, an information communication terminal such as a smartphone or a tablet terminal, and includes a communication unit 20a, a vibration detection unit 20b, a vibration information acquisition unit 20c, a position information acquisition unit 20d, and a position estimation unit 20e.

[0040] The communication unit 20a is connected to the base station 30 by wire or wirelessly, and transmits and receives information or signals thereto. The communication unit 20a transmits information or signals of the terminal 20 to the base station 30, for example.

[0041] The vibration detection unit 20b is, for example, a sensor (built-in sensor) having a sensing function such as an acceleration sensor (motion sensor) or an angular velocity sensor (gyro sensor), and detects that the user has shaken the terminal 20. The vibration detection unit 20b is an example of a "user behavior detection unit" that detects a user behavior performed on the terminal.

[0042] The vibration information acquisition unit 20c determines, for example, by machine learning or the like, whether the vibration given to the terminal 20 is the vibration when the terminal 20 is shaken or the vibration when it is carried. When the vibration information acquisition unit 20c determines that the vibration given to the terminal 20 is the vibration when the terminal 20 is shaken, it measures and acquires vibration information such as the number of vibrations and the vibration duration. The vibration information acquisition unit 20c is an example of a "user behavior information acquisition unit" that acquires information on a predetermined user behavior performed on its own terminal.

[0043] The location information acquisition unit 20d is, for example, a Global Positioning System (GPS) or the like, and acquires location information of the terminal 20 itself.

[0044] The position estimation unit 20e estimates the position of the terminal 20 itself from, for example, radio wave conditions and GPS information.

[0045] The base station 30 is a base station or a remote station, and provides coverage for a predetermined frequency band. The base station 30 includes a communication unit 30a and a setting unit 30b.

[0046] The communication unit 30a is connected to the terminal 20 and the control unit 40 by wire or wirelessly, and transmits and receives information or signals thereto. The communication unit 30a receives information or signals transmitted from the terminal 20 or the control unit 40, for example, and transmits the information or signals to another terminal 20 or control unit 40.

[0047] The setting unit 30b sets, for example, designated parameters notified by the control unit 40.

[0048] The control unit (wireless communication device) 40 is, for example, an external server, a CU, a DU, or a gNodeB, and is connected to the first base station 31 and the second base station 32. The control unit 40 has, for example, a processor (not shown) such as a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or a GPU (Graphics Processing Unit) that operates by executing a program. The control unit 40 generally controls the operation of each component of the wireless communication system 1 by operating the processor (not shown) by, for example, executing a predetermined program stored in a memory 92 (see FIG. 15) described later.

[0049] The control unit 40 has the configuration or functions of a communication unit 40a and a determination unit 40b. Each function of the control unit 40 may be realized by a control program executed by the arithmetic processing unit of the control unit 40. Each function may also be realized by hardware.

[0050] The communication unit 40a is connected to the base station 30 by wire or wirelessly, and transmits and receives information or signals thereto. For example, the communication unit 40a receives information or signals transmitted from the base station 30, and transmits information or signals of the control unit 40 to the base station 30.

[0051] The determination unit 40b determines the coverage 12 of the second base station 32 by using a terminal notification signal notified from the terminal 20 via the base station 30. The determination unit 40b determines the coverage 12 that the second base station 32 should cover by evaluating, for example, the presence or absence of a detected terminal, the number of detected terminals, the number of detections, and the like.

[0052] <Operation of the First Embodiment> FIG. 3 is a diagram showing a processing flow of the wireless communication system 1 shown in FIG. 1 and FIG.

[0053] In step S11, the terminal 20 detects the user's behavior. That is, the terminal 20 detects the user's behavior using the terminal function. For example, the user behavior of "shaking the terminal" exists as an intuitive behavior when the communication quality is degraded. For this reason, the terminal 20 detects the behavior of "shaking the terminal" using a sensor (e.g., an acceleration sensor, etc.) built into the terminal.

[0054] In step S12, the terminal 20 estimates the position of the terminal 20. Note that there is no restriction on the estimation method.

[0055] In step S13, the terminal 20 associates the user's behavior information detected in step S11 with the location information of the terminal 20 estimated in step S12, and notifies the first base station 31 from the terminal 20 (detecting terminal 20).

[0056] In step S14, the first base station 31 transfers to the control unit 40 a terminal notification signal including the user's behavior information and location information notified from the terminal 20.

[0057] In step S15, the control unit 40 determines the coverage 12 to be covered by the second base station 32 using information of the terminal notification signal notified from the first base station 31. At this time, the control unit 40 evaluates the presence or absence of detected terminals, the number of detected terminals, and the number of detections to determine the coverage 12 to be covered by the second base station 32.

[0058] In step S16, the control unit 40 notifies the second base station 32 of control parameters required for the second base station 32 to make the area determined by the control unit 40 into the coverage 12.

[0059] In step S17, the second base station 32 sets the control parameters (communication parameters, designated parameters) notified by the control unit 40.

[0060] Fig. 4 is a diagram showing an example of the operation of the wireless communication system 1 shown in Fig. 1 to Fig. 3. In Fig. 4, the same operations as those in the steps of Fig. 3 will be described with the same step reference numerals.

[0061] In step S11, the terminal 20 detects a predetermined behavior of the user. As shown in FIG. 4, for example, when the user of the first terminal 21 feels a decrease in QoE, the user shakes the first terminal 21 as an intuitive behavior. The first terminal 21 detects that it has been shaken. The first terminal 21 determines whether the vibration given to the first terminal 21 is a vibration given due to a decrease in QoE or a vibration given while the terminal is being carried, based on the manner in which the vibration is given. For example, this can be determined by machine learning or the like. The first terminal 21 measures the cumulative duration and number of vibrations due to a decrease in QoE given over a certain period of time.

[0062] In step S12, terminal 20 estimates the position of terminal 20. For example, when the first terminal 21 detects a predetermined user's behavior in step S11, the first terminal 21 estimates the position information of the first terminal 21 by using information acquired by a position information acquisition unit 20d (for example, a GPS, etc.) mounted in the first terminal 21.

[0063] In step S13, the first terminal 21 links the user's behavior information detected in step S11 with the location information of the first terminal 21 estimated in step S12, and notifies the first base station 31 from the first terminal 21, which is the detected terminal.

[0064] In step S14, the first base station 31 transfers (notifies) the control unit 40 of a terminal notification signal, which is the information notified from the first terminal 21.

[0065] In step S15, the control unit 40 determines the coverage 12 to be covered by the second base station 32 using information of the terminal notification signal including the user's behavior information and location information notified from the first base station 31. At this time, the control unit 40 evaluates the presence or absence of a detected terminal, the number of detected terminals, and the number of detections to determine the coverage 12 to be covered by the second base station 32. For example, the control unit 40 determines which of areas A, B, and C should be the coverage 12 to be covered by the second base station 32 based on the notified cumulative duration of vibration, the number of vibrations, or a score calculated using them.

[0066] Fig. 5 is a diagram showing the cumulative duration (or score) for each terminal. In Fig. 5, the horizontal axis indicates the first terminal 21 and the second terminal 22, and the vertical axis indicates the cumulative duration (or score) for which a terminal notification signal has been notified.

[0067] 5, the first terminal 21 has a longer cumulative duration for which a terminal notification signal has been notified than the second terminal 22. In this case, the control unit 40, for example, compares the cumulative duration for each terminal and selects the first terminal 21 with the longest cumulative duration. Then, the control unit 40 can determine from the terminal location information of the first terminal 21 that the first terminal 21 belongs to area A, and therefore determines that area A is to be the coverage 12 that the second base station 32 should cover.

[0068] The control unit 40 may distribute the time resources covered by the second base station 32 according to the score. For example, in the situation of Fig. 5, 80% of the time resources may be distributed to area A where the first terminal 21 exists, and the remaining resources may be distributed to area B where the second terminal 22 exists. That is, the control unit 40 may switch the area covered by the second base station 32 on a timetable according to the score.

[0069] 4, in step S16, the control unit 40 notifies the second base station 32 of control parameters (communication parameters, designated parameters) required for the second base station 32 to make the area A determined by the control unit 40 into the coverage 12. For example, the control unit 40 notifies the second base station 32 of the antenna tilt, antenna direction, beamforming weight, transmission power, etc. Note that, when the second base station 32 is movable, the control unit 40 notifies by designating the position.

[0070] In step S17, the second base station 32 sets the control parameters (communication parameters, designated parameters) notified by the control unit 40. The second base station 32 sets, for example, the antenna tilt, antenna direction, beam forming weight, transmission power, and the like notified by the control unit 40. If the second base station 32 is movable, it sets its position. The second base station 32 may also be a repeater or reflector. These relay devices can dynamically change their coverage.

[0071] <Effects of the First Embodiment> In the first embodiment shown in Fig. 1 to Fig. 5, the control unit 40 grasps a decrease in user-subjective QoE (i.e., user-subjective communication quality) via a notification from the first base station 31, for example, user behavior information such as the fact that the terminal 20 has been shaken, together with the location information of the terminal 20 (S11 to S14). Then, the control unit 40 determines the coverage 12 of the second base station 32 according to information of a terminal notification signal including the user behavior information and the location information of the terminal 20, notified from the first base station 31 (S15, S16). Then, the second base station 32 sets the parameters notified from the control unit 40 (S17).

[0072] 1 to 5, it is possible to detect a natural reaction of a user when the communication quality is deteriorated from the user's perspective, grasp the communication quality from the user's perspective, and feed it back to a base station or a network. Therefore, in the first embodiment shown in Fig. 1 to 5, it is possible to concentrate wireless resources on users or areas that truly require wireless resources, thereby improving the QoE (communication quality) from the user's perspective.

[0073] In addition, in the first embodiment shown in Figures 1 to 5, the quality of user experience (QoE) is associated with user behavior, and specific user behavior is fed back, thereby enabling radio resource control according to QoE. For example, in the first embodiment shown in Figures 1 to 5, an area with low QoE can be detected by utilizing the behavior of a user unintentionally shaking a terminal when the communication environment is poor, and radio resources can be added to the area. That is, in the first embodiment shown in Figures 1 to 5, radio resources can be concentrated on users or areas that truly require radio resources by directly feeding back from the user the QoE (communication quality) that is subjective to the user, which is difficult to estimate.

[0074] <Configuration of the second embodiment> Fig. 6 is a diagram showing a configuration example of a wireless communication system 1A according to the second embodiment. In the second embodiment, the same components as those in the first embodiment shown in Figs. 1 to 5 are denoted by the same reference numerals, and detailed description thereof will be omitted or simplified.

[0075] As shown in FIG. 6, the wireless communication system 1A has a first terminal 21A, a second terminal 22A, a third terminal 23A, a first base station 31A, a second base station 32A, a control unit 40A, a first relay device 51, and a second relay device 52.

[0076] The first terminal 21A, the second terminal 22A, and the third terminal 23A can be connected to both the first base station 31A and the second base station 32A, respectively. The first terminal 21A, the second terminal 22A, and the third terminal 23A are always connected to the first base station 31A. In the following, in this embodiment, the first terminal 21A, the second terminal 22A, and the third terminal 23A are collectively referred to as "terminal 20A". The terminal 20A has a sensing function for detecting the user's behavior.

[0077] The first base station 31 is a base station or a remote station, and forms a coverage area (a range in which radio waves can be received) 11 of the frequency band f1. The coverage area 11 of the frequency band f1 is an area X in FIG.

[0078] The second base station 32A is a base station or a remote station, and forms a coverage 12A of the frequency band f2. The coverage 12A of the frequency band f2 is area Y in FIG. 6. The coverage 12A of the frequency band f2 is arranged so as to overlap within the coverage 11 of the first base station 31 in FIG. 6. By overlapping the coverage 12A of the second base station 32A with the coverage 11 of the first base station 31A, it is possible to improve communication quality. In the following, in this embodiment, the first base station 31 and the second base station 32A are collectively referred to as "base station 30A".

[0079] The control unit (wireless communication device) 40A is, for example, an external server, a CU, a DU, or a gNodeB, and is connected to the first base station 31A and the second base station 32A. The control unit 40A is an example of a "wireless communication device".

[0080] The first relay device 51 and the second relay device 52 relay the second base station 32A of the frequency band f2. In this embodiment, the first relay device 51 and the second relay device 52 are also referred to as the "first relay 51" and the "second relay 52". In this embodiment, the first relay device 51 and the second relay device 52 are collectively referred to as the "relay device 50" or the "relay 50".

[0081] The relay device (relay) 50 is, for example, a smart repeater, an intelligent reflector (RIS: Reconfigurable Intelligent Surface), etc., and is a device whose coverage can be controlled by changing parameters. Each relay device 50 is installed at a different location.

[0082] Fig. 7 is a diagram showing an example of the configuration of the terminal 20A, the base station 30A, the control unit 40A, and the relay device 50 shown in Fig. 6. Note that in Fig. 7, typical configurations of the normal terminal 20A, the base station 30A, the control unit 40A, and the relay device 50 are omitted from the illustration.

[0083] In the terminal 20A, the communication unit 20a transmits and receives information or signals to and from the relay device 50. The rest of the configuration of the terminal 20A is similar to the configuration of the terminal 20 in the first embodiment, and therefore a description thereof will be omitted.

[0084] In the base station 30A, the communication unit 30a transmits and receives information or signals to and from the relay device 50. Other configurations of the base station 30A are similar to those of the base station 30 of the first embodiment, and therefore will not be described.

[0085] The control unit (wireless communication device) 40A is, for example, an external server, a CU, a DU, or a gNodeB, and is connected to the first base station 31A and the second base station 32A. The control unit 40A has the configuration or functions of a communication unit 40a and a determination unit 40b.

[0086] The communication unit 40a is connected to the base station 30A by wire or wirelessly, and transmits and receives information or signals thereto. For example, the communication unit 40a receives information or signals transmitted from the base station 30A, and transmits information or signals of the control unit 40A to the base station 30A.

[0087] The determination unit 40b determines the coverage 13 of the first relay device 51 and the coverage 14 of the second relay device 52 by using a terminal notification signal notified from the terminal 20A via the base station 30A. The determination unit 40b determines the coverage 13 to be covered by the first relay device 51 and the coverage 14 to be covered by the second relay device 52 by evaluating, for example, the presence or absence of a detected terminal, the number of detected terminals, the number of detections, and the like.

[0088] The relay device 50 includes a communication unit 50a and a setting unit 50b.

[0089] The communication unit 50a is connected to the terminal 20A, the base station 30A, and another relay device 50 by wired or wireless connection, and transmits and receives information or signals thereto. The communication unit 50a receives information or signals transmitted from the terminal 20A, the base station 30A, or another relay device 50, and transmits them to the other terminal 20, the base station 30A, or the relay device 50, for example.

[0090] The setting unit 50b sets, for example, the designated parameters notified by the base station 30A.

[0091] <Operation of the second embodiment> FIG. 8 is a diagram showing a processing flow of the wireless communication system 1A shown in FIG. 6 and FIG.

[0092] The process of steps S21 to S23 is similar to the process of steps S11 to S13 in the first embodiment shown in Figures 1 to 5, and therefore the description will be omitted. Note that in step S23, the terminal 20A may notify the user's behavior information and location information not only to the first base station 31A but also to the second base station 32A.

[0093] In step S24, the first base station 31A (or the second base station 32A) transfers a terminal notification signal including the user's behavior information and position information notified from the terminal 20A to the control unit 40A.

[0094] In step S25, the control unit 40A uses information of the terminal notification signal notified from the first base station 31A (or the second base station 32A) to determine the coverages 13, 14 that each relay device 50 should cover. At this time, the control unit 40A evaluates the presence or absence of detected terminals, the number of detected terminals, and the number of detections to determine the coverages 13, 14 that each relay device 50 should cover.

[0095] In step S26, the control unit 40A notifies the second base station 32A of control parameters required for each relay device 50 to make the areas determined by the control unit 40A into the coverage areas 13 and 14.

[0096] In step S27, the second base station 32A notifies each relay device 50 of the control parameters (communication parameters, designated parameters) required for each relay device 50 to achieve the coverage areas 13 and 14 notified by the control unit 40A.

[0097] In step S28, each relay device 50 sets the control parameters (communication parameters, designated parameters) notified by the control unit 40A.

[0098] Fig. 9 is a diagram showing an example of the operation of the wireless communication system 1A shown in Fig. 6 to Fig. 8. In Fig. 9, the same operations as those in the steps of Fig. 8 will be described with the same step reference numerals.

[0099] In step S21, the terminal 20A detects a predetermined behavior of the user. As shown in FIG. 9, for example, when the user of the first terminal 21A feels a decrease in QoE, the user shakes the first terminal 21A as an intuitive behavior. Similarly, when the user of the second terminal 22A feels a decrease in QoE, the user shakes the second terminal 22A as an intuitive behavior. The first terminal 21A and the second terminal 22A detect that they have been shaken. The first terminal 21A and the second terminal 22A respectively determine whether the vibrations given to the first terminal 21A and the second terminal 22A are vibrations given due to a decrease in QoE or vibrations when the terminals are carried, based on the manner in which the vibrations are given. For example, the determination can be made by machine learning or the like. The first terminal 21A and the second terminal 22A respectively measure the cumulative duration and the number of vibrations due to a decrease in QoE given over a certain period of time.

[0100] In step S22, terminal 20A estimates the position of terminal 20A. For example, when first terminal 21A detects a predetermined action of the user in step S21, it estimates the position information of first terminal 21A using information acquired by position information acquisition unit 20d (e.g., GPS, etc.) mounted on first terminal 21A. Second terminal 22A also estimates the position information of second terminal 22A in the same manner as first terminal 21A.

[0101] In step S23, the first terminal 21A and the second terminal 22A link the user's behavior information detected in step S21 with the location information estimated in step S22, and notify the first base station 31A from the first terminal 21A and the second terminal 22A, which are the detected terminals. Note that the first terminal 21A and the second terminal 22A may notify the user's behavior information and location information not only to the first base station 31A, but also to the second base station 32A.

[0102] In step S24, the first base station 31A (or the second base station 32A) transfers (notifies) the control unit 40A of a terminal notification signal, which is information notified from the first terminal 21A and the second terminal 22A.

[0103] In step S25, the control unit 40A uses information of a terminal notification signal including user behavior information and location information notified from the first base station 31 (or the second base station 32A) to determine the coverages 13, 14 that each relay device 50 should cover. At this time, the control unit 40A evaluates the presence or absence of a detected terminal, the number of detected terminals, and the number of detections to determine the coverages 13, 14 that each relay device 50 should cover. For example, the control unit 40A determines which areas each relay device 50 should cover as the coverages 13, 14 based on the notified cumulative duration, the number of vibrations, or a score calculated using them.

[0104] Fig. 10 is a diagram showing the cumulative duration (or score) for each terminal. In Fig. 10, the horizontal axis indicates the first terminal 21A, the second terminal 22A, and the third terminal 23A, and the vertical axis indicates the cumulative duration (or score) for which a terminal notification signal has been notified.

[0105] In FIG. 10, the cumulative duration during which the terminal notification signal was notified most is the longest for the first terminal 21A, the second longest for the second terminal 22A, and the shortest for the third terminal 23A. In this case, the control unit 40A, for example, compares the cumulative duration for each terminal, and selects the first terminal 21A with the longest cumulative duration and the second terminal 22A with the second longest cumulative duration. Then, since the control unit 40A can determine that the first terminal 21A is relatively close to the first relay device 51, the first relay device 51 covers the first terminal 21A, and determines the coverage 13 that the first relay device 51 should cover. Similarly, the control unit 40A can determine that the second terminal 22A is relatively close to the second relay device 52, and determines the coverage 14 that the second relay device 52 should cover, since the second relay device 52 covers the second terminal 22A.

[0106] The control unit 40A may score the cumulative duration and the number of vibrations, and determine the coverage that maximizes the sum of the scores of the terminals 20A that may be present within the coverage of each relay device 50. For example, in the situation of Fig. 10, the first terminal 21A and the second terminal 22A are close to each other and can be accommodated in the same coverage at the same time, while the third terminal 23A is located away from the first terminal 21A and the second terminal 22A and cannot be accommodated in the same coverage at the same time. In this case, the control unit 40A may maximize the score of the first relay device 51 and the second relay device 52 by accommodating the first terminal 21A and the second terminal 22A in the same coverages 13 and 14 at the same time.

[0107] Furthermore, the control unit 40A may allocate time resources for each relay device 50 to cover the area according to the score. For example, in the situation of Fig. 10, 80% of the time resources may be allocated to the area including the first terminal 21A and the second terminal 22A, and the remaining resources may be used to cover the area including the third terminal 23A. That is, the control unit 40A may switch the areas covered by each relay device 50 on a timetable according to the score.

[0108] 9, in step S26, the control unit 40A notifies the second base station 32A of control parameters necessary for the first relay device 51 and the second relay device 52 to make the area determined by the control unit 40A into the coverage areas 13 and 14. For example, the control unit 40A notifies the second base station 32A of the antenna tilt, antenna direction, beam forming weight, amplification gain, etc. In addition, when the first relay device 51 and the second relay device 52 are movable, the control unit 40A sets and notifies the respective positions.

[0109] In step S27, the second base station 32A notifies the first relay device 51 of the control parameters (communication parameters, designated parameters) notified by the control unit 40A that are necessary for the first relay device 51 to achieve the coverage 13. Similarly, the second base station 32A notifies the second relay device 52 of the control parameters (communication parameters, designated parameters) notified by the control unit 40A that are necessary for the second relay device 52 to achieve the coverage 14.

[0110] In step S28, the first relay device 51 and the second relay device 52 each set the control parameters (communication parameters, designated parameters) notified by the control unit 40A.

[0111] <Effects of the Second Embodiment> As described above, the second embodiment shown in FIGS. 6 to 10 has the same effects as the first embodiment shown in FIGS.

[0112] 6 to 10, a first relay device 51 and a second relay device 52 that relay the second base station 32A of the frequency band f2 are used, and the control unit 40A determines the coverages 13 and 14 that the first relay device 51 and the second relay device 52 should cover (S25). Therefore, in the second embodiment shown in Fig. 6 to 10, the coverage can be set in more detail than in the first embodiment shown in Fig. 1 to 5.

[0113] As a result, in the second embodiment shown in Figures 6 to 10, wireless resources can be concentrated on users or areas that truly require wireless resources in more detail than in the first embodiment, and the user-subjective QoE (quality of experience) can be improved in more detail than in the first embodiment.

[0114] <Configuration of the third embodiment> Fig. 11 is a diagram showing a configuration example of a wireless communication system 1B according to the third embodiment. In the third embodiment, the same components as those in the first embodiment shown in Figs. 1 to 5 and the second embodiment shown in Figs. 6 to 10 are denoted by the same reference numerals, and detailed description thereof will be omitted or simplified. In the following, the third embodiment will be described based on the first embodiment shown in Figs. 1 to 5, but can also be applied to the second embodiment shown in Figs. 6 to 10.

[0115] As shown in FIG. 11, a wireless communication system 1B includes a first terminal 21B to a seventh terminal 27B, a first base station 31, a second base station 32, a control unit 40B, and a distribution server 60.

[0116] The first terminal 21B to the seventh terminal 27B can be connected to both the first base station 31 and the second base station 32, respectively. The first terminal 21B to the seventh terminal 27B are always connected to the first base station 31. In the following, in this embodiment, the first terminal 21B to the seventh terminal 27B are collectively referred to as "terminal 20B". The terminal 20B has a sensing function for detecting the user's behavior. The terminal 20B also includes a display unit 20f having a GUI (Graphical User Interface) for checking the communication quality in real time (see FIG. 12). In the present embodiment, the display unit 20f is also referred to as "GUI 20f".

[0117] The first base station 31 and the second base station 32 are similar to the first base station 31 and the second base station 32 in the first embodiment shown in FIGS. 1 to 5, and therefore a description thereof will be omitted.

[0118] The control unit (wireless communication device) 40B is, for example, an external server, a CU, a DU, or a gNodeB, and is connected to the first base station 31, the second base station 32, and the distribution server 60. The control unit 40B determines the coverage 12 of the second base station 32 by using a terminal notification signal. In addition, the control unit 40B transmits (notifies) the determined coverage to the distribution server 60. The control unit 40B is an example of a "wireless communication device".

[0119] The distribution server 60 distributes the coverage 12 after being controlled by the control unit 40B, predicted values of the communication speed (and other communication performance) at each point, and the like to the terminal 20B.

[0120] Fig. 12 is a diagram showing an example of the configuration of the terminal 20B, the base station 30, the control unit 40B, and the distribution server 60 shown in Fig. 11. Note that in Fig. 12, typical configurations of the normal terminal 20B, the base station 30, the control unit 40B, and the distribution server 60 are omitted from the illustration.

[0121] The terminal 20B is, for example, an information communication terminal such as a smartphone or a tablet terminal, and includes a communication unit 20a, a vibration detection unit 20b, a vibration information acquisition unit 20c, a position information acquisition unit 20d, a position estimation unit 20e, and a display unit (GUI) 20f.

[0122] In the terminal 20B, the communication unit 20a also transmits and receives information or signals to and from the distribution server 60. The configurations of the other units in the terminal 20B, namely, the communication unit 20a, the vibration detection unit 20b, the vibration information acquisition unit 20c, the position information acquisition unit 20d, and the position estimation unit 20e, are similar to those of the terminal 20 in the first embodiment, and therefore will not be described.

[0123] The display unit (GUI) 20f has a GUI operation and display function. The display unit 20f displays information and a power map distributed from the distribution server 60 in GUI format (GUI display). The information and power map displayed in the GUI are updated at predetermined time intervals or in real time.

[0124] The base station 30 has the same configuration as the base station 30 in the first embodiment, and therefore a description thereof will be omitted.

[0125] In the control unit (wireless communication device) 40B, the communication unit 40a transmits and receives information or signals to and from the distribution server 60. Note that other configurations of the control unit 40B are similar to the configurations of the control unit 40 in the first embodiment, and therefore description thereof will be omitted.

[0126] The distribution server 60 includes a communication unit 60a and a calculation unit 60b.

[0127] The communication unit 60a is connected to the control unit 40B and the terminal 20B by wire or wirelessly, and transmits and receives information or signals thereto. For example, the communication unit 60a receives information and signals transmitted from the control unit 40B, and transmits information and signals of the distribution server 60 to the control unit 40B. The communication unit 60a also distributes information received from the control unit 40B and calculated by the calculation unit 60b so that it can be displayed in a GUI to the terminal 20B.

[0128] The calculation unit 60b has a processor (not shown), such as a CPU, MPU, or GPU, which operates by executing a program. The calculation unit 60b executes a predetermined program stored in a memory 92 (see FIG. 15), which will be described later, to operate the processor (not shown) and perform predetermined calculations and distribution. Each function of the calculation unit 60b may be realized by a control program executed by an arithmetic processing device of the calculation unit 60b. Each of these functions may also be realized by hardware.

[0129] The calculation unit 60b calculates the coverage 12 (e.g., areas A, B, C, etc.) after control by the control unit 40B, predicted values of communication speeds (other communication performance) at each point, etc., so that the terminal 20B can display them in a GUI based on the information received from the control unit 40B. Also, the calculation unit 60b draws an influence map that the terminal 20B can display in a GUI based on the calculation result.

[0130] For example, the calculation unit 60b may perform calculations and create a power map so that the terminal 20B can display predicted values using specific numerical values, or may perform calculations and create a power map so that the terminal 20B can display the predicted values using abstract displays such as color shading. In this case, the calculation unit 60b may estimate the QoE for each location (area) based on the actual degree of usage demand, and may display the estimated results. The configuration or function of the calculation unit 60b may be included in the control unit 40B, or may be included in another control unit, another external server, or the like.

[0131] <Operation of the third embodiment> Fig. 13 is a diagram showing a processing flow of the wireless communication system 1B shown in Fig. 11 and Fig. 12. Hereinafter, Fig. 13 will be described based on the first embodiment shown in Fig. 1 to Fig. 5, but as described above, the third embodiment is also applicable to the second embodiment shown in Fig. 6 to Fig. 10 in the same manner.

[0132] In the third embodiment, the control of the base station 30 and the relay device 50 by the control unit 40B is similar to that in the first or second embodiment, so the illustration of the base station 30 and the relay device 50 in Fig. 13 and a detailed description of the control are omitted. Also, in Fig. 13, one terminal 20B is shown, but the same operation is performed when there are multiple terminals 20B. In that case, the distribution information from the distribution server 60 is broadcast or multicast.

[0133] In steps S31 to S34, the same processes as those in steps S11 to S17 in the first embodiment shown in Figures 1 to 5 are performed. Therefore, a description of the processes in steps S31 to S34 will be omitted here.

[0134] In step S35, the control unit 40B notifies the distribution server 60 of the coverage 12 determined by the control unit 40B.

[0135] In step S36, the distribution server 60 performs calculations and draws a power map so that the terminal 20B can display, in a GUI, the coverage 12 determined by the control unit 40B, the predicted values of the communication speed at each point, etc., based on the information notified from the control unit 40B. Note that the distribution server 60 may digitize the communication quality improved by adding the coverage and draw the map to display it in the corresponding area, or may draw the map to display it using colors instead of numerical values.

[0136] In step S37, the distribution server 60 distributes the GUI influence map created in step S36 to the terminal 20B. At that time, if there are multiple terminals 20B, the GUI influence map is distributed (broadcast) to the multiple terminals 20B. Note that the GUI influence map may be distributed (multicast) to only predetermined terminals 20B.

[0137] Fig. 14 is a diagram showing an example of a GUI influence map displayed on terminal 20B. In Fig. 14, the outer rectangle indicates display unit 20f of terminal 20B, and three ellipses indicate areas A, B, and C that can be covered by second base station 32.

[0138] FIG. 14 shows a display example in which predicted values of communication speed (and other communication performance) at each point are expressed by color intensity. The example in FIG. 14 shows a case in which user behavior (e.g., shaking the terminal) was observed most frequently in areas A, B, and C, in that order, and areas A, B, and C are shown in darker colors in that order. Note that the display method is not limited to this, and a user interface that stimulates gambling spirits may also be used. The GUI power map may also be a group competition.

[0139] For example, each user of the terminal 20B who has confirmed the distribution information from the distribution server 60 goes to the desired area and takes user action (e.g., swinging the terminal 20B) to improve the communication quality in the desired area, thereby promoting the improvement of QoE. In this embodiment, as in the first and second embodiments, the presence or absence of coverage is determined or the time resource of coverage is distributed according to the magnitude (degree) of the user action. For this reason, according to the third embodiment, each user checks the situation at predetermined time intervals or in real time by the distribution information distributed from the distribution server 60 to the terminal 20B, and is prompted to take further user action (e.g., swinging the terminal 20B) according to the situation. In this way, when users compete for coverage, it is possible to create a better communication environment for the users.

[0140] Returning to Fig. 13, after step S37, the processes of steps S31 to S37 are repeated periodically (at predetermined time intervals). Note that the processes of steps S31 to S37 may be constantly repeated in real time. In this case, for example, even if some terminals 20B have not performed the processes of steps S31 and S32, the processes of steps S33 to S37 may be performed periodically or in real time using information collected up to that point.

[0141] <Effects of the Third Embodiment> As described above, the third embodiment shown in FIGS. 11 to 14 has the same effects as the first embodiment shown in FIGS. 1 to 5 and the second embodiment shown in FIGS.

[0142] In the third embodiment shown in Figs. 11 to 14, the distribution server 60 creates a GUI influence map based on the information notified by the control unit 40B and distributes it to each terminal 20B (S35 to S37). As a result, each user who has confirmed the distribution information distributed from the distribution server 60 to the terminal 20B is prompted to take further user action (for example, shaking the terminal 20B) depending on the situation. That is, in the third embodiment shown in Figs. 11 to 14, a gamification element is added to the wireless resource control, and the wireless coverage and wireless resources are controlled using the QoE from the user that is directly fed back. By adding such a gamification element, a scramble for coverage occurs between users, and as a result, it is possible to create a better communication environment for each user or a communication environment closer to the QoE based on the user's subjective opinion.

[0143] 11 to 14, a gamification element is adopted in which users cooperate with each other and compete for wireless resources in accordance with specific rules, so that resources can be concentrated in areas where wireless resources are truly needed. The GUI power map may be a group-versus-group map. This also allows users of a group to cooperate with each other and compete for wireless resources in accordance with specific rules, so that resources can be concentrated in areas where there are many groups where wireless resources are truly needed.

[0144] In the third embodiment shown in Figs. 11 to 14, a mechanism is provided in which users compete for wireless resources (coverage), making it possible to clarify and visualize areas where wireless resources are truly required.

[0145] In addition, in areas where users are competing for coverage, there is a possibility that the user-subjective QoE is not satisfied. In the third embodiment shown in Figures 11 to 14, the information is clarified and visualized, so that the network operator can grasp the information. As a result, in the third embodiment shown in Figures 11 to 14, it is possible to encourage the network operator to take action, such as strengthening the network.

[0146] <Hardware configuration example> FIG. 15 is a conceptual diagram showing an example of the hardware configuration of the processing circuitry of the terminals 20, 20A, 20B, control units 40, 40A, 40B, and distribution server 60 (hereinafter collectively referred to and illustrated as "control unit 40, etc.") according to the embodiment shown in FIGS. 1 to 14. Each of the above-mentioned functions is realized by the processing circuitry. In one aspect, the processing circuitry includes at least one processor 91 and at least one memory 92. In another aspect, the processing circuitry includes at least one dedicated hardware 93.

[0147] When the processing circuit includes a processor 91 and a memory 92, each function is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in the memory 92. The processor 91 realizes each function by reading and executing the program stored in the memory 92.

[0148] Where the processing circuitry comprises dedicated hardware 93, the processing circuitry may be, for example, a single circuit, multiple circuits, a programmed processor, or a combination thereof. Each function is implemented by the processing circuitry.

[0149] Each function of the control unit 40 etc. may be partially or entirely configured by hardware, or may be configured as a program executed by a processor. That is, the control unit 40 etc. can be realized by a computer and a program, and the program can be stored in a storage medium or provided through a network.

[0150] <Supplementary information for the embodiment> As described above, according to the embodiments shown in Fig. 1 to Fig. 15, the first embodiment shown in Fig. 1 to Fig. 5, the second embodiment shown in Fig. 6 to Fig. 10, and the third embodiment shown in Fig. 11 to Fig. 14 are separated, but some or all of these embodiments may be combined in series or in parallel. That is, for example, the elements of the third embodiment may be combined with the second embodiment so that users compete for the coverage set by the relay device 50. By combining the embodiments, the combined embodiment can achieve the respective functions and effects achieved by the respective embodiments before being combined.

[0151] 1 to 15, "shaking the terminal 20" is exemplified as a user behavior for measuring the user-subjective QoE (user experience), but the present invention is not limited to this, and other behaviors may be used for measuring the user experience. For example, the transmission of a signal indicating that the user-subjective QoE is deteriorating may be used as a user behavior for measuring the user-subjective QoE (user experience).

[0152] The signal transmission may be triggered by, for example, a tap on the screen of the terminal 20 or the like by the user. That is, for example, a behavior of a user unintentionally tapping the screen of the terminal 20 or the like many times when the communication environment is poor may be utilized to detect an area with low QoE and add wireless resources to the area. In this case, the terminals 20, 20A, and 20B may include a tap detection unit that detects a tap as an example of a "user behavior detection unit" that detects a user behavior performed on the terminal itself. Similarly, the terminals 20, 20A, and 20B may include a tap information acquisition unit that acquires information such as the time and number of taps as an example of a "user behavior information acquisition unit" that acquires information on a predetermined user behavior performed on the terminal itself.

[0153] 1 to 15, the wireless communication systems 1, 1A, and 1B have been described as an example of one aspect of the present disclosure, but the present disclosure can also be realized as a wireless communication device that performs the processing of the control units 40, 40A, and 40B in the wireless communication systems 1, 1A, and 1B. Also, the present disclosure can be realized as a wireless communication method that performs the processing of each unit in the wireless communication systems 1, 1A, and 1B.

[0154] The present disclosure can also be realized as a wireless communication program that causes a computer to execute the processing steps of the control units 40, 40A, and 40B in the wireless communication systems 1, 1A, and 1B.

[0155] The present disclosure can also be realized as a storage medium (non-transitory computer-readable medium) on which a wireless communication program is stored. The wireless communication program can be stored and distributed on a removable disk such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a USB (Universal Serial Bus) memory. The wireless communication program may be uploaded onto a network via a network interface (not shown) included in the control units 40, 40A, and 40B, or may be downloaded from the network and stored in the memory 92, etc.

[0156] The features and advantages of the embodiments will be apparent from the above detailed description. It is intended that the claims cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. In addition, any improvements and modifications can be easily made by a person having ordinary skill in the art. Therefore, it is not intended to limit the scope of the inventive embodiments to the above, and appropriate improvements and equivalents within the scope of the embodiments disclosed are also possible. [Explanation of symbols]

[0157] 1, 1A, 1B... wireless communication system; 11, 12, 12A, 13, 14... coverage; 20, 20A, 20B... terminal; 20a... communication unit; 20b... vibration detection unit (user behavior detection unit); 20c... vibration information acquisition unit (user behavior information acquisition unit); 20d... position information acquisition unit; 20e... position estimation unit; 20f... display unit (GUI); 21, 21A, 21B... first terminal; 2 2, 22A, 22B... second terminal; 23A, 23B... third terminal; 24B... fourth terminal; 25B... fifth terminal; 26B... sixth terminal; 27B... seventh terminal; 30, 30A... base station; 30a... communication unit; 30b... setting unit; 31, 31A... first base station; 32, 32A... second base station; 40, 40A, 40B... control unit (control device, wireless communication device); 40a... communication unit; 40b... Determination unit; 50... relay device (relay); 50a... communication unit; 50b... setting unit; 51... first relay device (first relay); 52... second relay device (second relay); 60... distribution server; 60a... communication unit; 60b... calculation unit; 91... processor; 92... memory; 93... hardware; 100... mobile network; 101... macro cell; 102... small cell; 103... eNodeB (LTE base station); 104... C-RAN (centralized radio access network); 105... UE (user terminal); 106... DU (distributed station); 107... RU (wireless device); 108... EPC (LTE core network); 109... relay server; 110... Internet; 111... cloud server; A, B, C... area; f1, f2... frequency band; X, Y... area

Claims

1. A first base station that provides coverage for a first frequency band; a second base station that forms coverage of a second frequency band different from the first frequency band in an area smaller than the first frequency band by superimposing the coverage of the first frequency band on the coverage of the first frequency band; a terminal connectable to both the first base station and the second base station; a wireless communication device connected to both the first base station and the second base station and controlling a coverage of the second base station; A wireless communication system comprising: The terminal includes: A user behavior detection unit that detects user behavior; a user behavior information acquisition unit that acquires information on the user behavior when it is determined that the user behavior detected by the user behavior detection unit is a predetermined user behavior performed on the terminal; A location estimation unit that estimates location information of the terminal itself, The wireless communication device includes: A determination unit that determines a coverage to be covered by the second base station based on the user behavior information and the location information acquired from the terminal via the first base station or the second base station.