Control device, control system, control method, and program

Abstract

A control device that performs traffic control in a wireless communication system comprising a terminal and one or more base stations, the control device comprising: an area setting unit that sets, for each of the one or more base stations, a predetermined area where data of the terminal is transmitted at a predetermined transmission rate; and a control unit that instructs the base station in the predetermined area to transmit the data of the terminal while the terminal stays in the predetermined area.

Description

[Technical Field]

[0001] The present invention relates to the technical field of traffic control in wireless communication systems. [Background technology]

[0002] Conventional techniques for traffic control in wireless communication systems include a technique for performing traffic control for each user and a technique for performing traffic control for each application, as described in Non-Patent Document 1, for example. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Part 3: And I Control Wireless LAN ~Communication Control for More Comfortable Wireless LAN Use~, https: / / www.netone.co.jp / knowledge-center / blog-column / knowledge_takumi_059 / Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional technology, the same control is performed regardless of the power consumption of the base station and terminal, which increases the power consumption of the base station and terminal. For example, when the distance between the base station and terminal is long, the power consumption of the base station and terminal increases, but in conventional technology, control is performed without taking such a situation into consideration, which increases the power consumption of the base station and terminal.

[0005] The present invention has been made in view of the above points, and has an object to provide a technique for reducing power consumption of base stations and terminals in a wireless communication system. [Means for solving the problem]

[0006] According to the disclosed technology, there is provided a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, the control device comprising: an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control unit determines a travel route that minimizes power consumption from among a plurality of travel routes that the terminal can take, and instructs the terminal to take the determined travel route. A control device is provided. [Effects of the Invention]

[0007] The disclosed technology provides a technology for reducing power consumption of base stations and terminals in a wireless communication system. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an overall configuration diagram of a system. [Figure 2] FIG. 1 is a diagram for explaining an overview of an embodiment. [Figure 3] FIG. 2 is a configuration diagram of a control device. [Figure 4] 10 is a flowchart illustrating the operation of the system. [Figure 5] FIG. 10 is a diagram illustrating an example of area setting. [Figure 6] FIG. 2 illustrates an example of a hardware configuration of the apparatus. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention (the present embodiment) will be described with reference to the drawings. The embodiment described below is merely an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0010] (System configuration, operation overview) Fig. 1 shows an example of the configuration of a wireless communication system according to the present embodiment. As shown in Fig. 1, the wireless communication system includes a base station 10, a terminal 20, and a control device 100. Although Fig. 1 shows one base station 10 and one terminal 20, in reality, there are multiple base stations 10 and multiple terminals 20. Furthermore, a system including the control device 100 and the base station 10 may be called a control system.

[0011] The base station 10 may be a base station in a cellular communication network (e.g., 3G, 4G / LTE, 5G, 6G), a base station in a wireless LAN, or a base station in a wireless system other than these. Also, different wireless systems may be mixed among multiple base stations 10. The terminal 20 is a device that communicates wirelessly with the base station 10, such as a smartphone or tablet.

[0012] Generally, when terminal 20 enters an area (which may be called a cell) where it can communicate with base station 10, it connects to base station 10 and communicates with base station 10. The area where base station 10 and terminal 20 can communicate is, for example, an area where the reception strength at terminal 20 of a signal transmitted from base station 10 is equal to or greater than a certain threshold. Alternatively, the area where base station 10 and terminal 20 can communicate may be an area where the reception strength at base station 10 of a signal transmitted from terminal 20 is equal to or greater than a certain threshold.

[0013] The control device 100 is a device that performs traffic control (which may be called "scheduling"), which will be described later. The control device 100 may be connected to the base station 10 by wire or wirelessly. The control device 100 can also communicate with the terminal 20 via the base station 10.

[0014] Furthermore, the functions of the control device 100 may be provided in the base station 10 or in the terminal 20. Both the base station 10 and the terminal 20 that have the functions of the control device 100 may be called a "control device."

[0015] In this embodiment, only the downlink may be considered, only the uplink may be considered, or both the downlink and the uplink may be considered in the communication between the base station 10 and the terminal 20. For example, the "transmission rate" may be the downlink transmission rate from the base station 10 to the terminal 20, the uplink transmission rate from the terminal 20 to the base station 10, or the total transmission rate of the downlink transmission rate and the uplink transmission rate.

[0016] An overview of the operation of the wireless communication system of this embodiment will be described with reference to Fig. 2. In Fig. 2, the method according to this embodiment is shown as the "proposed method," and the method according to the conventional technology is shown as the "conventional method." The graphs shown for the "proposed method" and the "conventional method" respectively indicate the amount of data transmitted between terminal 10 and base station 20 (or the power consumption of terminal 10 and base station 20) corresponding to the position of terminal 10.

[0017] 2, there are base station 10-1 and base station 10-2, which use different wireless systems, although the wireless systems of base station 10-1 and base station 10-2 may be the same.

[0018] 2, the area indicated by A1 is an area where communication is possible between base station 10-1 and terminal 20, and the area indicated by A2 is an area where high traffic communication occurs between base station 10-1 and terminal 20. The area indicated by B1 is an area where communication is possible between base station 10-2 and terminal 20, and the area indicated by B2 is an area where high traffic communication occurs between base station 10-2 and terminal 20. It is assumed that terminal 20 moves from area A1 towards area B1.

[0019] In the prior art, there is no concept of area A2 and area B2. In the prior art, base station 20 flows traffic in response to requests from terminal 10, regardless of the location of terminal 20. As a result, a large amount of power is consumed over the entire movement path of terminal 20 (i.e., for a long time).

[0020] On the other hand, the proposed method limits the area in which terminal 20 performs high-traffic communications. In the example of Fig. 2, the control device 100 instructs base station 10 to perform traffic control (scheduling) so that high-traffic communications are performed in area A2 within area A1, and high-traffic communications are performed in area B2 within area B1.

[0021] In other words, the proposed method reduces the power consumption per unit of data of the terminal 20 and the base station 10 by setting up areas for high-traffic communication so as to satisfy the amount of data required for communication by the terminal 10 while shortening the time during which high power consumption is used.

[0022] (Device configuration example) Fig. 3 shows an example of the functional configuration of the control device 100 in this embodiment. As shown in Fig. 3, the control device 100 has an information acquisition unit 110, an area setting unit 120, a control unit 130, and a storage unit 140. The operation of each unit will be explained in the operation example below.

[0023] (Example of operation of the control device 100) Next, an example of the operation of the control device 100 having the above-described configuration will be described in accordance with the procedure of the flowchart in Fig. 4. In the example of operation described here, it is assumed that the travel route of the terminal 20 is given to the control device 100 in advance and stored in the storage unit 140. It is also assumed that the application used by the terminal 20 is not an application that exchanges data in real time, but an application that does not cause any problems even if a certain time interval occurs between data transmission and reception.

[0024] Note that the movement route of the terminal 20 may be expressed in any format. For example, the movement route may be expressed as information on the position of the terminal 20 at each time. Further, the movement route of the terminal 20 may be expressed as the speed of the terminal (including the speed and direction) at each time. In any case, the movement route includes information such as the movement path and the speed at which to move at each location. Also, even if the movement paths are the same between two movement routes, if the movement speeds are different, these two movement routes are different.

[0025] <S1: Input> In S1 (Step 1), the information acquisition unit 110 acquires the information necessary for subsequent processing and stores the acquired information in the storage unit 140. The information to be acquired includes, for example, the following information. When acquiring information, it may be input manually or acquired from an information server or the like. Regarding the following movement routes, there may be a plurality of movement routes (multiple options) for one terminal 20. Among the multiple options, there may be an option (movement route) to be selected with the highest priority.

[0026] · The coordinates of the base station 10 to be controlled · Information indicating which radio method each base station 10 uses · The value of the transmission rate measured by a simulator or an actual device in each base station 10 · Movement route information of the terminal 20 · Communication requirements for each application or each packet <S2: Area setting> The area setting unit 120 of the control device 100 sets an area in which high-speed communication traffic flows in the base station 10 of the radio method W based on the information stored in the storage unit 140. This area may be referred to as a "high-traffic area". The area satisfies the following conditions.

[0027] · Transmission rate of communication between the base station 10 and the terminal 20: R W · Power consumption per unit time: P W Note that the "power consumption" in this embodiment is the sum of the power consumption of the terminal 20 and the power consumption for communication between the terminal 20 and the base station 10. Note that the "power consumption" in this embodiment may be the power consumption of the terminal 20 or the power consumption for communication between the terminal 20 and the base station 10.

[0028] FIG. 5 shows an example of area setting. In the example of FIG. 5, in the base station 10-1, the area of A2 is set as an area for flowing high-speed communication traffic, and in the base station 10-2, the area of B2 is set as an area for flowing high-speed communication traffic.

[0029] The conditions for the area of A2 are as follows.

[0030] · Wireless method: W1 · Transmission rate: R W1 · Power consumption per unit time: P W1 The conditions for the area of B2 are as follows.

[0031] · Wireless method: W2 · Transmission rate: R W2 · Power consumption per unit time: P W2 <S3: Notification of the required value T> In S3 of FIG. 4, the terminal 20 notifies the control device 100 through the base station 10 of the required value T of the amount of transmission data to be transmitted within the communication area of the base station 10. The information acquisition unit 110 of the control device 100 acquires the required value T and stores it in the storage unit 140.

[0032] <S4: Determination of passage> In S4, the control unit 130 of the control device 100 determines whether to pass through the high-traffic area set in S2 during the movement process of the terminal 20. For example, in the area setting example shown in FIG. 5, the control unit 130 determines whether the terminal 20 passes through at least one of the areas A2 and B2. If the determination result in S4 is Yes, the process proceeds to S5; if No, the process proceeds to S10.

[0033] Note that when there are multiple options in the movement process, the determination here may be a determination of "whether there is a movement process passing through the high-traffic area among the multiple options". For example, when "there is a movement process passing through the high-traffic area among the multiple options", select one movement process passing through the high-traffic area and proceed to S5; when "there is no movement process passing through the high-traffic area among the multiple options", proceed to S10.

[0034] <S5: Condition determination> The process of S5, which is the process when the determination result in S4 is Yes (that is, when the movement process of the terminal 20 passes through the high-traffic area), will be described.

[0035] In S5, the control unit 130 determines whether the following two conditions (Condition 1 and Condition 2) are both met for the terminal 20. Note that when there is only one option in the movement process, Condition 1 does not need to be considered. If the determination result in S5 is Yes (when both conditions are satisfied), the process proceeds to S6; if the determination result in S5 is No (when either or both of the two conditions are not satisfied), the process proceeds to S7.

[0036] Condition 1: Among the multiple options of the movement process of the terminal 20, the power value consumed by the terminal 20 in the selected movement process is minimized.

[0037] Condition 2: In the selected movement process, compare the transmission rates of the high-traffic areas on the movement path of the terminal 20, and communicate with the base station with a higher transmission rate, and the total value of the transmitted data volume exceeds the required value T.

[0038] By using the following three characters, Condition 1 and Condition 2 above can be expressed by, for example, the following Formula 1 and Formula 2, respectively.

[0039] R WMaxi : The i-th highest transmission rate among the high-traffic areas on the path of Terminal 20 t RWMaxi : The time that Terminal 20 stays in the high-traffic area of R WMaxi P RWMaxi : The power consumption per unit time in the high-traffic area of R WMaxi Condition 1: Σ(t WMaxi ×P RWMaxi ) is minimized. Formula 1 Condition 2: (Terminal's required value T) < (Σ(R WMaxi ×t WMaxi )) [[ID=3​​3]]Σ in each of the above formulas is the sum for the high-traffic areas passed by Terminal 20 in descending order of transmission rate. For example, when adding (R WMaxi ×t WMaxi ) in descending order of transmission rate, for the high-traffic areas after the point where Condition 2 is satisfied, the calculation of Condition 1 may be performed with P RWMaxi set to 0.

[0040] <S6: Control for Flowing Data> In S6 when the determination in S5 is Yes, the control unit 130 instructs each base station 10 in the high-traffic area passed by Terminal 20 to flow the data of Terminal 20 when Terminal 20 passes through the high-traffic area. This instruction may be given in advance or in real time in accordance with the movement of Terminal 20.

[0041] Note that based on the calculation result of Condition 2 in S5, data may be flowed in the high-traffic areas in descending order of transmission rate, and for the high-traffic areas in the transmission rate ranking after the point where Condition 2 is satisfied, control may be performed so as not to flow data.

[0042] <S7: Determination of Whether Movement Route Can Be Changed> In S7 which proceeds when the determination in S6 is No, the control unit 130 determines whether it is possible to change the movement route of the terminal 20. As an example, when there are multiple options for the movement route of the terminal 20, it is determined that the change is possible.

[0043] If the determination result of S7 is Yes (when change is possible), it proceeds to S8, and if the determination result of S5 is No (when change is not possible), it proceeds to S9.

[0044] <S8: Movement Route Change> In S8 which proceeds when the determination in S7 is Yes, the control unit 130 uses one or more of the following processes (1) to (3) to change the movement route of the terminal 20 to the movement route with the minimum power consumption value (e.g., Σ(t WMaxi ×P WMaxi )) among the multiple movement routes that the terminal 20 can take. The priority of the three processes is, in descending order, process (1), process (2), and process (3). Note that it is also possible to perform at least any one of processes (1), (2), and (3) without setting priorities. The control unit 130 notifies the terminal 20 of the movement route determined in S8 via the base station 10.

[0045] Also, even when a movement route with a non-minimum power consumption value is selected among the multiple movement routes that the terminal 20 can take, it may be acceptable. For example, in S8, a movement route B with lower power consumption than the power consumption of the movement route A selected at the time of entering S8 is selected, and the power consumption of this movement route B may not be the minimum among the multiple movement routes that the terminal 20 can take.

[0046] Hereinafter, the moving route selected when entering S8 is defined as "Moving Route A". Also, in the following description, in the process of "in the order of high-traffic areas with high transmission rates", for example, in the high-traffic area through which terminal 20 passes, processing (such as stopping, route change, speed change, etc.) is performed in the order of "high-traffic areas with high transmission rates", and for high-traffic areas ranked after the high-traffic area when condition 2 (satisfying the transmission data volume) is met, it may not be necessary to perform processing.

[0047] <Processing (1) of S8: Stopping the movement> In processing (1), the control unit 130 changes Moving Route A to "a moving route in which the movement of terminal 20 is stopped for a predetermined time on the route of Moving Route A". Note that the moving route before the change is not limited to Moving Route A, and processing (1) may be performed for each of the multiple moving routes that terminal 20 can take, and the changed moving route with the minimum power consumption may be used as the result of processing (1).

[0048] Specifically, in processing (1), the control unit 130 stops terminal 20 in the high-traffic area for a predetermined time so that the transmission data volume can be satisfied by the total time that terminal 20 stays in the high-traffic area in the order of high-traffic areas with high transmission rates. For example, it may be better to stop for a longer time in areas with higher transmission rates.

[0049] The above content can be expressed by the following Formula 3.

[0050] Σ (Terminal's required value T / R WMaxi ) < Σ (t WMaxi ) Formula 3 <Processing (2) of S8: Changing the moving speed> In process (2), the control unit 130 changes the movement route A to "a movement route in which, among the high-traffic areas through which the terminal 20 passes on the route of the movement route A, the magnitude of the moving speed of the terminal 20 within the high-traffic area is changed so as to secure data communication time in the order of high-traffic areas with high transmission rates". Note that the movement route before the change is not limited to the movement route A, and process (2) is performed for each of a plurality of movement routes that the terminal 20 can take (including the result of process (1)), and the changed movement route that minimizes power consumption may be used as the result of process (2).

[0051] For example, it may be such that the higher the transmission rate of an area, the smaller the magnitude of the moving speed.

[0052] <Process (3) of S8: Change of movement route> In process (3), the control unit 130 changes the movement route A to "a movement route in which the route is changed to the route that maximizes the stay time within the high-traffic area in the order of high-traffic areas with high transmission rates in the high-traffic areas through which the terminal 20 passes in the movement route A". Note that the movement route before the change is not limited to the movement route A, and process (3) is performed for each of a plurality of movement routes that the terminal 20 can take (including the result of process (1) or process (2)), and the changed movement route that minimizes power consumption may be used as the result of process (3).

[0053] Also, in process (3), in addition to or instead of the above process, the control unit 130 may perform a process of changing the movement route A to "a movement route having a movement route in which the total distance between the terminal 20 and the base station 10 in the high-traffic area is the smallest among a plurality of movement routes (a plurality of movement paths)".

[0054] The "total distance between the terminal 20 and the base station 10" may be, for example, the sum of the "average distance between the terminal 20 and the base station 10" in the high-traffic areas through which the terminal 20 passes for the high-traffic areas through which the terminal 20 passes.

[0055] <S9: Calculate data amount C> When entering S9, the movement route of the terminal 20 has been determined. In S9, the control unit 130 calculates, among the required value T, the data volume C that can be communicated while the terminal 20 passes through the high-traffic area. The data volume C can be calculated by Σ(R WMaxi ×t WMaxi ).

[0056] <S10: Control for Data Transmission> In S10, the control unit 130 instructs the base station 10 to evenly transmit the data volume for (T - C) in the communication area outside the high-traffic area and to transmit the data volume for C in the high-traffic area through which the terminal 20 passes.

[0057] Note that in S9, if C = T, then in S10, data will be transmitted only within the high-traffic area through which the terminal 20 passes.

[0058] Also, in S10 when the determination result of S4 is No, C = 0, and in S10, the control unit 130 instructs the base station 10 to evenly transmit the data volume for T in the communication area outside the high-traffic area.

[0059] Each of the above instructions may be performed in advance or in real time according to the movement of the terminal 20.

[0060] The above are the processes of S1 to S1o shown in FIG. 4. Note that when the number of terminals 20 in the base station 10 is sufficiently large and the transmission rate becomes less than R W in the high-traffic area, the control unit 130 may issue an instruction to the terminal 20 to change the movement route, etc., in order to limit the number of terminals existing in the high-traffic area. This instruction may be performed in advance or in real time according to the movement of the terminal 20.

[0061] (Example of Hardware Configuration) The control device 100 can be realized, for example, by causing a computer to execute a program. This computer may be a physical computer or a virtual machine on the cloud.

[0062] That is, the control device 100 can be realized by using hardware resources such as a CPU and memory built into a computer to execute a program corresponding to the processing performed by the control device 100. The program can be recorded on a computer-readable recording medium (such as a portable memory) and can be saved or distributed. The program can also be provided via a network such as the Internet or email.

[0063] Fig. 6 is a diagram showing an example of the hardware configuration of the computer. The computer in Fig. 6 includes a drive device 1000, an auxiliary storage device 1002, a memory device 1003, a CPU 1004, an interface device 1005, a display device 1006, an input device 1007, an output device 1008, and the like, all of which are interconnected via a bus BS.

[0064] A program for realizing processing on the computer is provided by a recording medium 1001 such as a CD-ROM or a memory card. When the recording medium 1001 storing the program is set in the drive device 1000, the program is installed from the recording medium 1001 to the auxiliary storage device 1002 via the drive device 1000. However, the program does not necessarily have to be installed from the recording medium 1001, but may be downloaded from another computer via a network. The auxiliary storage device 1002 stores the installed program as well as necessary files, data, etc.

[0065] When an instruction to start a program is received, the memory device 1003 reads and stores the program from the auxiliary storage device 1002. The CPU 1004 implements the functions of the control device 100 in accordance with the program stored in the memory device 1003.

[0066] The interface device 1005 is used as an interface for connecting to a network, etc. The display device 1006 displays a GUI (Graphical User Interface) etc. according to a program. The input device 1007 is composed of a keyboard, mouse, buttons, a touch panel, etc., and is used to input various operation instructions. The output device 1008 outputs the calculation results.

[0067] The control device 100 may not include any one, more than one, or all of the display device 1006, the input device 1007, and the output device 1008.

[0068] (Effects of the embodiment) As described above, the technology according to the present embodiment makes it possible to reduce the power consumption of the base station 10 and the terminal 20 in a wireless communication system. That is, by setting an area for high-traffic communication and transmitting a large amount of data within that area, it is possible to reduce the power consumption of the base station 10 and the terminal 20 while providing the wireless network quality (throughput, etc.) required by the terminal 10.

[0069] (Addendum) This specification discloses at least the control device, control system, control method, and program described in the following sections. (Additional note 1) A control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; A control device comprising: (Additional note 2) The control unit determines a travel route that minimizes power consumption from among a plurality of travel routes that the terminal can take, and instructs the terminal to take the determined travel route. Item 1. The control device according to claim 1. (Additional note 3) The control device may: A process of changing the specific travel route by stopping the terminal for a certain period of time in a predetermined area that is passed through on the specific travel route; A process of changing the specific travel route by changing the travel speed of the terminal in a predetermined area passed through on the specific travel route; and a process of changing the specific travel route by changing the travel route of the terminal in a predetermined area passed through in the specific travel route; At least one of the following processes is performed: 3. The control device according to claim 1 or 2. (Additional note 4) When the entire amount of transmission data requested by the terminal can be transmitted only in the predetermined area through which the terminal passes, the control unit instructs the base station to transmit data of the terminal only in the predetermined area; When only a part of the transmission data amount requested by the terminal can be transmitted in the predetermined area through which the terminal passes, the control unit instructs the base station to transmit the part of the data amount in the predetermined area through which the terminal passes, and to transmit the remaining amount of data in a communication area other than the predetermined area through which the terminal passes. 4. The control device according to any one of claims 1 to 3. (Additional note 5) A control system including a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, and the one or more base stations, The control device an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; A control system comprising: (Additional note 6) A control method executed by a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, comprising: an area setting step of setting, for each of the one or more base stations, a predetermined area in which data from the terminal is transmitted at a predetermined transmission rate; a control step of instructing a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; A control method comprising: (Additional note 7) A non-transitory storage medium storing a program for causing a computer to function as each unit in the control device described in any one of appendixes 1 to 4.

[0070] Although the present embodiment has been described above, the present invention is not limited to such a specific embodiment, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. [Explanation of symbols]

[0071] 10 base station 20 terminals 100 control device 110 Information Acquisition Department 120 Area setting section 130 control section 140 Storage section 1000 Drive Device 1001 Recording media 1002 Auxiliary storage device 1003 Memory device 1004 CPU 1005 Interface device 1006 Display device 1007 Input Device 1008 Output Device

Claims

1. A control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control unit determines a travel route that minimizes power consumption from among a plurality of travel routes that the terminal can take, and instructs the terminal to take the determined travel route. Control device.

2. A control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control device may: A process of changing the specific travel route by stopping the terminal for a certain period of time in a predetermined area that is passed through on the specific travel route; A process of changing the specific travel route by changing the travel speed of the terminal in a predetermined area passed through on the specific travel route; and a process of changing the specific travel route by changing the travel route of the terminal in a predetermined area passed through in the specific travel route; At least one of the following processes is performed: Control device.

3. A control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; When the entire amount of transmission data requested by the terminal can be transmitted only in the predetermined area through which the terminal passes, the control unit instructs the base station to transmit data of the terminal only in the predetermined area; When only a part of the transmission data amount requested by the terminal can be transmitted in the predetermined area through which the terminal passes, the control unit instructs the base station to transmit the part of the data amount in the predetermined area through which the terminal passes, and to transmit the remaining amount of data in a communication area other than the predetermined area through which the terminal passes. Control device.

4. A control system including a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, and the one or more base stations, The control device an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control unit determines a travel route that minimizes power consumption from among a plurality of travel routes that the terminal can take, and instructs the terminal to take the determined travel route. Control system.

5. A control system including a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, and the one or more base stations, The control device an area setting unit that sets a predetermined area, which is an area through which data from the terminal is transmitted at a predetermined transmission rate, for each of the one or more base stations; a control unit that instructs a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control device may: A process of changing the specific travel route by stopping the terminal for a certain period of time in a predetermined area that is passed through on the specific travel route; A process of changing the specific travel route by changing the travel speed of the terminal in a predetermined area passed through on the specific travel route; and a process of changing the specific travel route by changing the travel route of the terminal in a predetermined area passed through in the specific travel route; At least one of the following processes is performed: Control system.

6. A control method executed by a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, comprising: an area setting step of setting, for each of the one or more base stations, a predetermined area in which data from the terminal is transmitted at a predetermined transmission rate; a control step of issuing an instruction to a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; In the control step, the control device determines a travel route that minimizes power consumption from among a plurality of travel routes that the terminal can take, and instructs the terminal to take the determined travel route. Control method.

7. A control method executed by a control device that performs traffic control in a wireless communication system having a terminal and one or more base stations, comprising: an area setting step of setting, for each of the one or more base stations, a predetermined area in which data from the terminal is transmitted at a predetermined transmission rate; a control step of issuing an instruction to a base station in the predetermined area to transmit data of the terminal while the terminal is staying in the predetermined area; The control device may: A process of changing the specific travel route by stopping the terminal for a certain period of time in a predetermined area that is passed through on the specific travel route; A process of changing the specific travel route by changing the travel speed of the terminal in a predetermined area passed through on the specific travel route; and a process of changing the specific travel route by changing the travel route of the terminal in a predetermined area passed through in the specific travel route; At least one of the following processes is performed: Control method.

8. A program for causing a computer to function as each unit in the control device according to any one of claims 1 to 3.

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