Control device, wireless communication device, and control method for wireless communication device

Abstract

The present invention facilitates the setting of requirements in a wireless communication system. According to the present invention, a capacity calculation unit calculates the wireless communication capacity of a wireless network including multiple wireless communication devices based on information about frequency bands used in the wireless network. A wireless communication requirement acquisition unit acquires the requirements for a service provided for wireless communication between specific wireless communication devices among the multiple wireless communication devices. A determination unit determines, based on the wireless communication capacity, whether all wireless communication bearers established between the specific wireless communication devices meet the service requirements.

Description

Technical Field

[0001] The present technology relates to a wireless communication system. Specifically, the present technology relates to a wireless communication system that sets a request condition in a wireless communication bearer established between wireless communication devices. Background Art

[0002] In recent years, the 5th generation (5G) New Radio (NR), which is the next generation mobile wireless communication system, has attracted attention because of its characteristics of ultra-high speed, low latency, high reliability and multiple simultaneous connections. Therefore, the application field of wireless communication systems is becoming widespread. In this case, for example, due to the complicated installation of cables between devices used in factories, operating rooms, etc., the trend from wired connection to wireless connection between devices has become positive. In the case of a wired connection, by connecting the devices via a cable, it is possible to ensure transmission characteristics independently of the connection between other devices. On the other hand, in the case of a wireless connection, a dynamic quality of service (QoS) management method is required to obtain the expected characteristics of the connection between any devices, because communication must be performed between multiple devices using the same frequency bandwidth. Therefore, for example, a communication method for performing communication with a quality of service specified by a user of a terminal device has been proposed (for example, see PTL 1).

[0003] Reference List

[0004] Patent Literature

[0005] [PTL 1]

[0006] Japanese translation of PCT Application No. 2003-509983 Summary of the Invention

[0007] Technical issues

[0008] In the aforementioned related art, communications with a specific quality of service (QoS) are established. However, since multiple wireless communication bearers can be established as targets for QoS management, it is difficult to determine whether the wireless communication bearers are within the overall wireless communication capacity. Furthermore, for example, the type of medical equipment used in an operating room varies depending on the type of surgery or examination, and the type of industrial equipment or robots used varies depending on the type of work or process in a factory. Consequently, network configurations must be frequently changed. In such situations, setting up wireless communications can be a hurdle for those without prior knowledge of wireless technology.

[0009] The present technology has been proposed under such circumstances, and an object of the present technology is to facilitate setting of request conditions in a wireless communication system.

[0010] Solution to the problem

[0011] To address the aforementioned issues, according to a first aspect of the present technology, a control device includes: a capacity calculation unit configured to calculate the wireless communication capacity of a wireless network including multiple wireless communication devices based on information regarding the frequency bandwidth used in the wireless network; a wireless communication request condition acquisition unit configured to acquire the request conditions for a service provided in wireless communications between predetermined wireless communication devices among the plurality of wireless communication devices; and a determination unit configured to determine, based on the wireless communication capacity, whether all wireless communication bearers established between the predetermined wireless communication devices satisfy the service request conditions. A control method for the control device is provided. Consequently, an operational effect is achieved in which, based on the wireless communication capacity calculated from the information regarding the frequency bandwidth, it is determined whether all wireless communication bearers established between the predetermined wireless communication devices satisfy the service request conditions.

[0012] According to the first aspect of the present technology, the request condition for the service may include at least one of an image quality condition and a delay condition. Therefore, an operational effect is achieved in which setting the request condition is facilitated and operability is improved.

[0013] According to the first aspect of the present technology, the service request conditions may include an image quality condition, a delay condition, and information indicating which of the two conditions takes priority. This allows the service request conditions to be prioritized over the image quality condition.

[0014] According to the first aspect of the present technology, the service request condition may include a data rate condition instead of an image quality condition. That is, the image quality condition and the data rate condition have a one-to-one correspondence.

[0015] According to the first aspect of the present technology, the determination unit may set a QCI that satisfies the service request condition as a candidate, and determine that all wireless communication bearers satisfy the service request condition when all wireless communication bearers satisfy the set QCI. Thus, the QCI is used as an indicator for determining the service request condition.

[0016] According to the first aspect of the present technology, the determination unit may determine that all wireless communication bearers meet the service request condition when the sum of the bit rates corresponding to the set QCI is equal to or less than the wireless communication capacity. This achieves an operational effect in which the bit rate corresponding to the QCI is compared with the wireless communication capacity.

[0017] According to the first aspect of the present technology, the determination unit may use the minimum guaranteed bit rate as the bit rate when the resource type of the set QCI is bit rate guaranteed, and may use the aggregate maximum bit rate as the bit rate when the resource type of the set QCI is bit rate non-guaranteed. Thus, an operational effect is achieved in which the bit rate of the resource type corresponding to the QCI is used to perform a comparison with the wireless communication capacity.

[0018] According to the first aspect of the present technology, the control device may further include: a notification unit configured to notify, upon determining that not all wireless communication bearers meet the service request conditions, that not all wireless communication bearers meet the service request conditions. This provides an operational effect of prompting a user to reconsider the service request when the service request conditions are not met.

[0019] According to the first aspect of the present technology, a wireless communication request condition acquisition unit may acquire the request condition for the new service input in response to the notification. Based on the wireless communication capacity, a determination unit may determine whether all wireless communication bearers established between the predetermined wireless communication devices meet the request condition for the new service. This results in an operational effect in which, based on the wireless communication capacity calculated from the frequency bandwidth information, it is determined whether the request condition for the newly input new service is met.

[0020] According to a second aspect of the present technology, a control device includes: a wireless communication request condition acquisition unit configured to acquire request conditions for a service provided for wireless communication between predetermined wireless communication devices forming a wireless network; and an image control unit configured to generate a bit rate required to satisfy the service request conditions, and to perform image supply control on a wireless communication device serving as an image supply source based on whether a wireless communication bearer established between the predetermined wireless communication devices satisfies the generated bit rate. A control method for the control device is provided. Consequently, an operational effect is achieved in which image supply control is performed on the wireless communication device serving as an image supply source based on whether the established wireless communication bearer satisfies the bit rate required to satisfy the service request conditions.

[0021] According to the second aspect of the present technology, the image control unit can obtain the bit rate corresponding to the QCI identified for the wireless communication bearer and perform image supply control based on whether the bit rate corresponding to the QCI satisfies the generated bit rate. This achieves an operational effect in which the QCI is used as a determination indicator for image control.

[0022] According to the second aspect of the present technology, when the bit rate corresponding to the QCI does not meet the generated bit rate, the image control unit calculates the range of images that can be transmitted at the bit rate corresponding to the QCI and notifies the wireless communication device serving as the image supply source of this range. This achieves an operational effect in which the range of images provided to the wireless communication device is controlled.

[0023] According to the second aspect of the present technology, the image control unit can notify the range of the image in units of frames, thereby achieving an operational effect of controlling the range of the image provided to the wireless communication device for each frame.

[0024] According to the second aspect of the present technology, the image control unit can notify the user of the image range and the processing method for a range other than the range provided to the wireless communication device. This allows the user to control the processing method for a range other than the range provided to the wireless communication device. In this case, the processing method for the other range can be a method of reducing the frame rate or a method of reducing the resolution.

[0025] According to a third aspect of the present technology, a wireless communication device includes: a receiving unit configured to receive an instruction regarding a range of images that can be transmitted and request conditions for a service to be provided in a wireless communication bearer established with another wireless communication device forming a wireless network; an image processing unit configured to perform image processing on a predetermined image in response to the instruction; and a transmitting unit configured to provide the processed image to the other wireless communication device. Thus, an operational effect is achieved in which image processing is performed in response to the request conditions for the service and the instruction regarding the range of images that can be transmitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a diagram showing an example of the entire structure of a wireless communication system according to an embodiment of the present technology.

[0027] Figure 2 This is a diagram showing a part of the definition of QCI in 3GPP (3GPP TS 23.203).

[0028] Figure 3 is a diagram showing an overview of an endoscope system as a specific example of the wireless communication system according to the embodiment of the present technology.

[0029] Figure 4 : is a diagram showing a first setting example of request conditions for an endoscope system according to an embodiment of the present technology.

[0030] Figure 5 : is a diagram showing a second setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0031] Figure 6 : is a diagram showing a resetting example of the first setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0032] Figure 7: is a diagram showing a resetting example of the second setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0033] Figure 8 3 is a diagram showing a configuration example of the control device 400 and the input device 500 according to the first embodiment of the present technology.

[0034] Figure 9 This is the first half of a flowchart showing an example of a processing procedure of a QCI identification process according to the first embodiment of the present technology.

[0035] Figure 10 This is the latter half of the flowchart showing an example of the processing procedure of the QCI identification process according to the first embodiment of the present technology.

[0036] Figure 11 2 is a diagram showing a configuration example of a control device 400 and an input device 500 according to a second embodiment of the present technology.

[0037] Figure 12 is a flowchart showing an example of a processing procedure of an image quality control process according to the second embodiment of the present technology.

[0038] Figure 13 are diagrams illustrating exemplary aspects of image processing according to the second embodiment of the present technology.

[0039] Figure 14 1 is a diagram illustrating an example of a signaling flow among the wireless communication devices 101 and 102 , the base station 300 , and the control device 400 according to the second embodiment of the present technology. DETAILED DESCRIPTION

[0040] Hereinafter, modes for carrying out the present technology (hereinafter referred to as embodiments) will be described. The description will be made in the following order.

[0041] 1. First Embodiment (Example of Determining Service Request Conditions Based on Wireless Communication Capacity)

[0042] 2. Second Embodiment (Example of Performing Image Processing According to a Bit Rate Corresponding to QCI)

[0043] <1. First embodiment>

[0044] [Wireless Communication System]

[0045] Figure 1 is a diagram illustrating an example of the entire structure of a wireless communication system according to an embodiment of the present technology.

[0046] A wireless communication system is a system that performs wireless communication within a private network. Private networks have a wide range of network types, including those known as non-public networks or neutral host networks (NHNs). Private networks can also be referred to as local area networks (LANs) or local area data networks (LADNs). The wireless communication system includes wireless communication devices 101 to 106, a base station 300, a control device 400, and an input device 500.

[0047] Wireless communication devices 101 to 106 are terminal devices or various devices that perform wireless communication in a wireless communication system. Wireless communication devices are also called user equipment (UE). As examples of wireless communication devices 101 to 106, manufacturing equipment in a factory, medical equipment in an operating room, etc. are assumed.

[0048] Base station 300 is a base station that forwards wireless communications in a wireless communication system. Base station 300 forwards and manages, for example, wireless communications 201 between wireless communication devices 101 and 102 and wireless communications 202 between wireless communication devices 103 and 104. Base station 300 also manages device-to-device (D2D) communications 203 between wireless communication devices 105 and 106. When the wireless communication system conforms to 3GPP EUTRA (LTE), base station 300 may be an eNodeB (eNB) or an en-gNodeB (en-gNB). An eNodeB (eNB) and an en-gNodeB (en-gNB) may be referred to as an EUTRAN node. Additionally or alternatively, when the wireless communication system conforms to 3GPP NR, base station 300 may be a gNodeB (gNB) or an ng-eNodeB (ng-eNB). A gNodeB (gNB) or an ng-eNodeB (ng-eNB) may be referred to as an NGRAN node.

[0049] Control device 400 manages and controls the quality of service (QoS), which is the quality of service for wireless communications in a wireless communication system. Control device 400 manages and controls the QoS of wireless communications 201 and 202 performed between wireless communication devices 101 to 106 via base station 300. Control device 400 also manages and controls the QoS of D2D communication 203 between wireless communication devices 105 and 106, performed under the control of base station 300.

[0050] Here, the control device 400 can be connected to, for example, a policy control and charging rules function (PCRF) related to policy control of the evolved packet core (EPC) via a specific interface. The control device 400 can be connected to, for example, a policy control function (PCF) related to policy control of the 5G / next generation (NG) core via a specific interface. The control device 400 can be, for example, a PCRF and a packet data network gateway (P-GW) of the EPC. The control device 400 can be, for example, a PCF, a session management function (SMF), and a user plane function (UPF) of the 5G / NG core (5GC). The control device 400 is not limited to this example and may include a mobility management entity (MME) and a serving gateway (S-GW) of the EPC, or may be the MME or S-GW itself. The control device 400 may be referred to as an EPC node, which is a general term for each logical entity included in the EPC. In addition or alternatively, the control device 400 may include an access-mobility management function (AMF) in the 5GC, or may be the AMF itself. The control device 400 may be referred to as a 5GC node, which is a general term for each logical entity included in 5GC.

[0051] When the wireless communication system conforms to 3GPP EUTRA (LTE), the wireless communication device is a UE, the base station is an eNB or en-gNB, and the control device is an EPC (e.g., MME, P-GW, S-GW, or PCRF). The UE and the eNB or en-gNB are connected via a Uu interface to perform communication in each protocol of the physical layer, medium access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, and radio resource control (RRC) layer, or in cooperation with these protocols. The connection between the UE and the eNB or en-gNB in ​​the RRC layer is called an RRC connection. The eNB or en-gNB and the EPC are connected via the S1 interface. More specifically, an S1-MME connection is established between the eNB or en-gNB and the MME, and an S1-U connection is established between the eNB or en-gNB and the S-GW. The multiple eNBs or en-gNBs are connected via the X2 interface. A non-access stratum (NAS) connection can be established between the UE and the MME through NAS signaling.

[0052] When the wireless communication system conforms to the 3GPP NR system, the wireless communication device is a UE, the base station is a gNB or ng-eNB, and the control device is a 5GC (e.g., AMF, UPF, SMF, or PCF). The UE is connected to the gNB or ng-eNB via the Uu interface to perform communication in each protocol of the physical layer, MAC layer, RLC layer, PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer, or in cooperation with these protocols. As described above, the connection between the UE and the gNB or ng-eNB in ​​the RRC layer is called an RRC connection. The gNB or ng-eNB and the 5GC are connected via the NG interface. The multiple gNBs or ng-eNBs can be connected via the Xn interface. A NAS connection can be established between the UE and the AMF through NAS signaling.

[0053] The control device 400 can be a server of a multi-access edge computing (MEC) system in edge computing (also known as MEC). Edge computing enables services to be efficiently provided to UE (wireless communication device) or applications, while reducing end-to-end latency or the load on the transmission network by allowing access points close to the UE (wireless communication device) to host services of wireless communication operators and third parties. On the server of the MEC system, the MEC host can be virtually constructed using virtual network function technology. The MEC host can include a MEC platform, a virtualized infrastructure, MEC applications, and MEC services. The MEC system can be logically connected via the UPF and N6 reference points of the 5G / NG core (that is, 5GC).

[0054] The input device 500 is a device for inputting information required for setting the QoS managed by the control device 400. Here, the information required for setting the QoS is a request condition for the service provided to the user. The input device 500 stores information related to the wireless communication devices 101 to 106 in the wireless communication system, the connection source (connection destination) for establishing the wireless communication bearer in the wireless communication devices 101 to 106, and the correspondence with the connection destination (connection source). Here, the established wireless communication bearer is a default bearer or a dedicated bearer. The input device 500 can be arranged in the same physical or logical device as the control device 400 (arranged in the same location), or can be arranged in a different physical or logical device (not arranged in the same location).

[0055] Before any of the wireless communication devices 101 to 106 in the wireless communication system starts wireless communication, the control device 400 can set a QoS class indicator (QCI) assigned to the established wireless communication bearer based on the request conditions for wireless communication between all connection sources (connection destinations) and connection destinations (connection sources) acquired via the input device 500. The QCI is an index indicating various conditions related to the QoS of the wireless communication bearer.

[0056] Figure 2 This is a diagram showing a part of the definition of QCI in 3GPP (3GPP TS 23.203). Figure 2 In addition to the QCI definitions shown, custom QCI definitions and installations are also possible.

[0057] QCI is classified according to "resource type", "priority", "packet delay budget" and "packet error loss".

[0058] Resource types are categorized as guaranteed bit rate (GBR) and non-guaranteed bit rate (non-GBR: no bit rate guarantee, best effort). For GBR resource types, a minimum guaranteed bit rate (GBR) and a maximum guaranteed bit rate (GBR) can each be set. On the other hand, for non-GBR resource types, while the bit rate is not specifically guaranteed, an aggregate maximum bit rate (AMBR) can be set for non-GBR wireless communication bearers.

[0059] "Priority" indicates the priority of a packet when it is transmitted. A packet with a high priority is preferentially transmitted. Here, when the value indicated by the priority is smaller, the degree of priority is higher.

[0060] The "packet delay budget" is an index indicating the upper limit of the permissible delay of packets transmitted and received between the terminal and a packet data network (PDN) gateway (P-GW), UPF, or data network (DN).

[0061] "Packet Error Loss" is an index indicating the upper limit of the ratio of packets lost due to errors in transmission or reception.

[0062] For example, for low-latency enhanced mobile broadband (eMBB) applications in augmented reality (AR), resource types indicating "non-GBR", priority "6.8", packet delay budget "10ms", and "10 -6 ” is classified as QCI “80”, which is a characteristic of packet error loss.

[0063] Here, since technical knowledge for wireless communication is required to understand such QCI, it is difficult to appropriately select an index according to the QCI. Therefore, in an embodiment, the request condition of the wireless communication network can be specified according to an index that is more easily understood.

[0064] [Endoscope System]

[0065] Figure 3 is a diagram showing an overview of an endoscope system as a specific example of the wireless communication system according to the embodiment of the present technology.

[0066] The endoscope system includes a video scope 111, a video system center 112, a color monitor 113, and an image recording device 114. The video scope 111 is an endoscope used to image the interior of the human body, etc. The video system center 112 is a device that receives images from the video scope 111 and transmits these images to the color monitor 113 and image recording device 114. The color monitor 113 is a monitor that displays the color of the image captured by the video scope 111. The image recording device 114 is a device that records the image captured by the video scope 111 on a recording medium.

[0067] The video oscilloscope 111, the color monitor 113, and the image recording device 114 are assumed to be connected to the video system center 112 via wireless communication. The image captured by the video oscilloscope 111 is transmitted to the video system center 112 via wireless communication, and is further transmitted from the video system center 112 to the color monitor 113 and the image recording device 114 via wireless communication. That is, the video oscilloscope 111, the video system center 112, the color monitor 113, and the image recording device 114 function as wireless communication devices (e.g., UE) in the above-described wireless communication system.

[0068] Figure 4 : is a diagram showing a first setting example of request conditions for an endoscope system according to an embodiment of the present technology.

[0069] The endoscope system has at least one of a condition related to image quality (image quality condition) and a condition related to delay (delay condition) as a request condition for wireless communication between devices that send and receive images captured by the video oscilloscope 111. In this example, the image quality condition and the delay condition are set as request conditions. That is, when an image is sent from the video oscilloscope 111 to the video system center 112, high image quality and low delay are required. Therefore, in this example, the image quality of "4K" and the delay of "10ms" are set. Here, 4K means: image quality with a resolution of 3840×2160 pixels.

[0070] The image displayed on the color monitor 113 may not have this high image quality, but a low latency is required. This is because the user (e.g., a doctor) using the endoscope operates the endoscope by referring to the image displayed on the color monitor 113. Therefore, in this example, the image quality of "Full HD" and the latency of "10ms" are set for the transmission of the image from the video system center 112 to the color monitor 113. Here, full high definition (HD) means an image quality with a resolution of 1920×1080 pixels.

[0071] The image recorded on the image recording device 114 preferably has high image quality, but a long delay can be allowed. Therefore, in the transmission of images from the video system center 112 to the image recording device 114, the image quality of "4K" and the delay of "100ms" are set in this example.

[0072] In the setting of communication between devices that do not send and receive images, instead of conditions related to image quality, conditions related to data size (e.g., 256 bytes) or conditions related to data rate (e.g., 100Mbps (bits per second)) may be set.

[0073] Figure 5 : is a diagram showing a second setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0074] In this example, as a request condition for wireless communication between devices that send and receive images captured by the video oscilloscope 111, in addition to the settings in the above-mentioned first example, information indicating which condition takes priority between the image quality condition and the delay condition can be set.

[0075] That is, when an image is sent from the video oscilloscope 111 to the video system center 112, image quality is prioritized without compromising image quality. When an image is sent from the video system center 112 to the color monitor 113, delay is prioritized so that no delay occurs during display. When an image is sent from the video system center 112 to the image recording device 114, image quality is prioritized because some delay is not a problem.

[0076] Regarding the request conditions input for each wireless communication device, control device 400 determines whether it can process the QCIs of all established wireless communication bearers. Therefore, control device 400 retains information about the frequency bandwidths that can be used by the wireless communication system and calculates the wireless communication capacity based on this information. Based on the calculated wireless communication capacity, it determines whether it can process the QCIs of all established wireless communication bearers.

[0077] As such determination, the control device 400 transmits a determination result to the input device 500. When this determination result is at least a determination result indicating that request conditions of not all QCIs of the established wireless communication bearers can be processed, the input device 500 displays this determination result.

[0078] At this time, the manager having the authority to set the wireless communication system can think of resetting the plan to reduce necessary wireless communication resources based on this determination result obtained via the input device 500.

[0079] For example, it is conceivable that the request condition related to the image quality of wireless communication between any connection source (connection destination) and any connection destination (connection source) changes from 4K to Full HD, and the necessary data rate decreases.

[0080] In the example of the endoscope system described above, it is conceivable that the configuration is changed as follows.

[0081] Figure 6 : is a diagram showing a resetting example of the first setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0082] In this example, high image quality and low latency are requested when an image is transmitted from the video scope 111 to the video system center 112. Therefore, wireless communication is changed to wired communication to achieve reduction in wireless communication resources in the wireless communication system.

[0083] Figure 7 : is a diagram showing a resetting example of the second setting example of the request condition for the endoscope system according to the embodiment of the present technology.

[0084] In this example, the route for transmitting images from the video system center 112 to the image recording device 114 is changed to wireless communication performed via a public network, such as a communication device provided by a communication carrier, to reduce wireless communication resources in the wireless communication system.

[0085] By increasing the frequency bandwidth (such as unlicensed spectrum or shared spectrum) based on the determination result and increasing the wireless communication capacity, the request for necessary wireless communication resources can be met. In addition, by increasing the number of base stations 300 within the communication service area, performing interference control between base stations 300, and arranging base stations 300 at a high density, the wireless communication capacity can be increased.

[0086] The control device 400 can be configured in advance so that, for example, a connection request from a wireless communication device that is not participating in any wireless communication of the wireless communication system is rejected, such as the reset video oscilloscope 111 in the first configuration example or the reset image recording device 114 in the second configuration example. In other words, a connection request from an unsupposed device can be rejected.

[0087] After the network in the wireless communication system is constructed, control device 400 manages information required for QoS control that can be dynamically changed according to the usage of wireless communication 201, wireless communication 202, and D2D communication 203. As an example, the information required for QoS control includes the AMBR or the minimum and maximum GBR for each QCI. That is, when QoS is provided for wireless communication performed between any wireless communication devices, control device 400 also requires dynamic control according to the communication usage in the wireless communication.

[0088] [Structure of Control Device and Input Device]

[0089] Figure 8 1 is a diagram showing a configuration example of the control device 400 and the input device 500 according to the first embodiment of the present technology. Here, a process of constructing a network in a wireless communication system before communication starts is assumed.

[0090] The input device 500 includes an input unit 520, a retention unit 530, a display unit 540, and a transceiver unit 510. The input unit 520 is a unit for inputting request conditions for the wireless communication system on a setting screen or the like. The retention unit 530 is a unit for retaining the input request conditions for each device. The display unit 540 is a unit for displaying the request conditions retained in the retention unit 530 or the like on a setting screen or the like. For example, Figures 4 to 7 The setting screen shown in is displayed. The transceiver unit 510 is a unit that transmits the request condition of each device reserved in the reservation unit 530 to the control device 400.

[0091] For example, in the endoscope example described above, an operator in a medical setting (such as a doctor, nurse, or assistant) inputs a request condition related to image quality or delay through input unit 520. As described above, it is possible to set which condition takes priority between image quality and delay. The operator may not necessarily have knowledge of wireless technology.

[0092] The control device 400 includes a used frequency bandwidth setting unit 430 , a capacity calculation unit 440 , a transceiver unit 410 , a wireless communication request condition acquisition unit 420 , a QCI identification unit 450 , a QCI information retaining unit 470 , and a QCI allocation unit 460 .

[0093] The used frequency bandwidth setting unit 430 sets information on a frequency bandwidth used by the base station 300 that provides a wireless communication service in a network inside the wireless communication system.

[0094] The capacity calculation unit 440 calculates the wireless communication capacity based on the frequency bandwidth set by the used frequency bandwidth setting unit 430. Here, the wireless communication capacity is, for example, a peak data rate that can be provided within the coverage area of ​​the base station 300. An effective peak data rate obtained by multiplying the peak data rate by any coefficient (for example, 0.8) can be calculated as the wireless communication capacity.

[0095] Here, when N is the number of subcarriers per frequency bandwidth B [Hz], 64QAM (each symbol can transmit 6 bits) is the modulation scheme, Δf is the subcarrier spacing, and η is the coding rate, the peak data rate is calculated from the following expression.

[0096] Peak data rate = 6·η·N·Δf[bps]

[0097] Transceiver unit 410 receives a request condition for wireless communication of each wireless communication device from input device 500, and transmits a determination result to input device 500 when determining that the request condition is not satisfied. Transceiver unit 410 is an example of a notification unit described in the claims.

[0098] The wireless communication request condition acquisition unit 420 acquires the request condition for wireless communication of each wireless communication device from the input device 500 through the transceiver unit 410. The request condition is assumed to be, for example, a request condition related to image quality (or data rate) and delay as described above.

[0099] The QCI identification unit 450 identifies the best QCI among the QCIs retained by the QCI information retention unit 470 based on the request conditions (e.g., request conditions related to image quality and latency) for wireless communication for each device acquired by the wireless communication request condition acquisition unit 420. The QCI identification unit 450 can further identify the QCI based on the setting of the request conditions acquired by the wireless communication request condition acquisition unit 420 and indicating which condition is prioritized between image quality and latency. The QCI identification unit 450 is an example of a determination unit described in the claims.

[0100] The QCI information retaining unit 470 retains values ​​related to "resource type," "priority," "packet delay budget," and "packet error loss" associated with the 3GPP QCI. The QCI information retaining unit 470 can retain not only the 3GPP QCI as a standard specification but also unique values.

[0101] When the network of the wireless communication system is constructed, the QCI assigning unit 460 assigns the QCI identified by the QCI identifying unit 450 to the wireless communication bearer established for each wireless communication device.

[0102] For example, in the above example, regarding the image quality of "4K" and the latency of "10 ms" as the request conditions for wireless communication between the video scope 111 and the video system center 112, the QCI identification unit 450 identifies "80" as the QCI. The QCI allocation unit 460 allocates "80" as the QCI to the wireless communication bearer established for wireless communication between the video scope 111 and the video system center 112.

[0103] For example, in the above example, regarding the image quality of "4K" and the latency of "50 ms" as the request conditions for wireless communication between the video system center 112 and the image recording device 114, the QCI identification unit 450 identifies "7" as the QCI. The QCI allocation unit 460 allocates "7" as the QCI to the wireless communication bearer established for wireless communication between the video system center 112 and the image recording device 114.

[0104] When a wireless communication system is formed by two or more base stations 300 , setting of a request condition for connection between wireless communication devices is performed for each base station 300 .

[0105] [QCI identification processing]

[0106] Figure 9 and 10 : is a flowchart showing an example of a processing procedure of a QCI identification process according to the first embodiment of the present technology.

[0107] The capacity calculation unit 440 first calculates the wireless communication capacity from the frequency bandwidth used by the base station 300 (step S911 ). Here, the frequency bandwidth used by the base station 300 is set in the used frequency bandwidth setting unit 430 .

[0108] The wireless communication request condition acquisition unit 420 acquires request conditions related to image quality and delay time of wireless communication between devices (step S912 ).

[0109] The QCI identification unit 450 sets a QCI as a candidate for the request condition related to image quality and delay, referring to the numerical value of the QCI definition retained in the QCI information retaining unit 470 (step S913).

[0110] The QCI identification unit 450 checks the resource type of the QCI set as the candidate (step S914). If the resource type is GBR ("Yes" in step S915), the minimum GBR corresponding to the candidate QCI is set (step S916), and the sum of the minimum GBRs of all QCIs whose previously allocated resource type is GBR (total minimum GBR) is calculated (step S917).

[0111] On the contrary, when the resource type is non-GBR ("No" in step S915), the AMBR to which the QCI of the candidate is added is calculated (step S918). Here, the AMBR to which the QCI of the candidate is added is the AMBR of all QCIs whose previously allocated resource type is non-GBR.

[0112] Subsequently, it is determined whether the sum of the AMBR and the sum of the minimum GBR are equal to or less than the wireless communication capacity (step S921). When the sum of the AMBR and the sum of the minimum GBR are equal to or less than the wireless communication capacity ("Yes" in step S921), the QCI identification unit 450 identifies the QCI of the candidate as the QCI assigned to the requested wireless communication bearer (step S922). Then, it is determined whether the QCI is assigned to all connections (step S923). When it is determined that the QCI is assigned to all connections ("Yes" in step S923), the process ends. Conversely, when it is determined that the QCI is not assigned to all connections ("No" in step S923), the process after step S912 is performed.

[0113] On the contrary, when it is determined that the sum of the AMBR and the sum of the minimum GBR is greater than the wireless communication capacity ("No" in step S921), the fact that the sum is greater than the wireless communication capacity in the current request condition is fed back to the input device 500 via the transceiver unit 410 (step S924).

[0114] When the wireless communication system is formed by two or more base stations 300 , the above-described QCI identification process is performed for each base station 300 .

[0115] In this manner, in the first embodiment of the present technology, the request conditions input to the wireless communication bearer established between all wireless communication devices in the wireless communication system are compared with the wireless communication capacity calculated from the used frequency bandwidth. Therefore, based on the wireless communication capacity, it is possible to determine whether the input request conditions are satisfied. If it is determined that the input request conditions exceed the wireless communication capacity, this determination result is fed back to the input device 500, requesting a review of the request conditions.

[0116] In the first embodiment, when the request condition is input, easily understandable indexes (such as image quality and delay) can be used. Therefore, even an operator without knowledge of wireless technology can easily perform input, and thus, operability can be improved.

[0117] <2. Second embodiment>

[0118] In the first embodiment described above, when a network is constructed in a wireless communication system, it is determined based on the wireless communication capacity whether the wireless communication bearer established between all wireless communication devices satisfies the requested conditions. On the other hand, when management is performed after the network is constructed, the importance of each range in the image provided by the wireless communication device as the source can be different. For example, in the example of the endoscope described above, management can be performed so that a specific range of the captured image is sent with high image quality and the remaining range is sent with low quality. Therefore, in the second embodiment, an example will be described in which image processing is dynamically performed after wireless communication begins. Since the overall structure of the wireless communication system is similar to that of the wireless communication system of the first embodiment described above, a detailed description will be omitted.

[0119] [Structure of Control Device and Input Device]

[0120] Figure 11 1 is a diagram showing a configuration example of a control device 400 and an input device 500 according to a second embodiment of the present technology. Here, a process after a network is constructed in a wireless communication system and communication starts will be assumed.

[0121] Since the structure of the input device 500 in the second embodiment is similar to that of the input device 500 of the above-described first embodiment, a detailed description will be omitted.

[0122] In addition to the above-described first embodiment, the control device 400 in the second embodiment further includes a communication bearer management unit 480 , an image quality control unit 490 , and a control information sending unit 495 .

[0123] The communication bearer management unit 480 manages information on the AMBR of non-GBR, the minimum GBR and the maximum GBR of GBR, and the delay for each QCI from the situation of all constructed wireless communication bearers and the wireless communication capacity calculated by the capacity calculation unit 440 .

[0124] Image quality control unit 490 controls the quality of images transmitted in the wireless communication system. After any wireless communication bearer in the wireless communication system is established, image quality control unit 490 checks the bit rate for any wireless communication bearer used to transmit and receive moving images. Control information transmission unit 495 transmits control information regarding image quality determined by image quality control unit 490. Image quality control unit 490 and control information transmission unit 495 are examples of image control units described in the claims.

[0125] For example, when the resource type of the identified QCI is non-GBR, image quality control unit 490 checks the AMBR in communication bearer management unit 480. Here, the AMBR is the sum of the maximum bit rates provided by all established wireless communication bearers with non-GBR resource types. Image quality control unit 490 checks whether the AMBR satisfies the image quality request condition based on the image quality request condition acquired by wireless communication request condition acquisition unit 420 and the AMBR checked by communication bearer management unit 480.

[0126] When determining that AMBR can satisfy the request condition related to image quality, the control information sending unit 495 instructs the image processing unit of the wireless communication device (e.g., the image processing unit of the video oscilloscope 111) to perform communication with the image quality requested in the request condition.

[0127] Conversely, if it is determined that the AMBR cannot satisfy the requested condition related to image quality, the image quality control unit 490 calculates the range of images that can be transmitted during each minimum unit of frame time, based on the AMBR, from the entire range of images in each frame having an image format corresponding to the requested condition related to image quality (e.g., full HD). In calculating the range of images, any wireless communication bearer having a resource type other than GBR and transmitting and receiving moving images is targeted.

[0128] Then, the control information transmission unit 495 notifies the image processing unit of the wireless communication device of information about the range of images that can be transmitted during each minimum unit frame time. Here, when any wireless communication bearer is selected, for example, a wireless communication bearer that is established to connect a device with a low image quality priority setting and has a resource type of non-GBR can be preferentially selected.

[0129] For example, when the resource type of the identified QCI is GBR, the image quality control unit 490 checks the minimum GBR in the communication bearer management unit 480. The image quality control unit 490 checks whether the minimum GBR satisfies the request condition related to image quality based on the request condition related to image quality acquired by the wireless communication request condition acquisition unit 420 and the minimum GBR checked by the communication bearer management unit 480.

[0130] At this time, when it is determined that the minimum GBR can satisfy the request condition related to image quality, the control information transmission unit 495 instructs the image processing unit of the wireless communication device to perform communication with the image quality requested in the request condition.

[0131] Conversely, when it is determined that the minimum GBR cannot satisfy the request condition related to image quality, the image quality control unit 490 calculates the range of images that can be transmitted during each frame time of the minimum unit based on the minimum GBR, from the entire range of images in each frame having an image format corresponding to the request condition related to image quality (e.g., full HD). In the calculation of the image range, any wireless communication bearer that is a wireless communication bearer of a resource type that transmits and receives moving images and has a GBR is a target.

[0132] Then, the control information transmission unit 495 notifies the image processing unit of the wireless communication device of information about the range of images that can be transmitted during each minimum unit of frame time. Here, when any wireless communication bearer is selected, for example, a wireless communication bearer that is established to connect a device with a low image quality priority setting and has a resource type of GBR can be preferentially selected.

[0133] [Image quality control processing]

[0134] Figure 12 is a flowchart showing an example of a processing procedure of an image quality control process according to the second embodiment of the present technology.

[0135] The image quality control unit 490 calculates the necessary bit rate based on the request condition related to image quality acquired by the wireless communication request condition acquisition unit 420 (step S931). For example, when the request condition related to image quality is the RGB24 scheme and full HD at 60 frames per second (fps), the number of bits that must be transmitted in units of frames is

[0136] 1920×1080×24=about 50 megabits.

[0137] Therefore, the number of bits that must be sent per unit time (that is, the bit rate) is

[0138] 50 Mbits x 60 = approximately 3 Gbps.

[0139] That is, the request conditions related to image quality and the request conditions related to bit rate have a one-to-one correspondence.

[0140] Subsequently, the image quality control unit 490 acquires the QCI identified by the QCI identification unit 450 (step S932). Since the QCI identification process is the same as that of the first embodiment described above, a detailed description will be omitted.

[0141] Then, it is determined whether the resource type of the identified QCI is GBR or non-GBR (step S933). If the resource type is GBR ("Yes" in step S933), the image quality control unit 490 obtains the minimum GBR corresponding to the identified QCI from the communication bearer management unit 480 (step S934). Conversely, if the resource type is non-GBR ("No" in step S933), the image quality control unit 490 obtains the AMBR, which is the sum of the maximum bit rates provided by all wireless communication bearers whose resource type is non-GBR, from the communication bearer management unit 480 (step S935).

[0142] Subsequently, based on the resource type, a determination is made as to whether the minimum GBR or AMBR satisfies the bit rate required for the quality of the requested condition (requested image quality) (step S936). Here, when the resource type is non-GBR, the total bit rate is compared with the AMBR. The total bit rate is obtained by adding the bit rate required for the requested image quality of the wireless communication bearer to which any non-GBR QCI is assigned and the bit rate required for the requested image quality of all other wireless communication bearers to which non-GBR QCIs are assigned. If it is determined that the minimum GBR or AMBR satisfies the bit rate required for the requested image quality ("Yes" in step S936), the image quality control unit 490 issues a transmission instruction for the requested image quality (step S937).

[0143] In contrast, when it is determined according to the resource type that the minimum GBR or AMBR does not satisfy the bit rate required for the requested image quality (No in step S936 ), the range of images that can be transmitted based on the minimum GBR or AMBR is calculated (step S938 ).

[0144] For example, when the minimum GBR is 750Mbps, the number of pixels that can be sent in frame units is

[0145] 750[Mbps] / 60[fps] / 24[bits / pixel]

[0146] =520833 pixels.

[0147] In the case of the same aspect ratio as that of full HD, 540 pixels×960 pixels are used.

[0148] The image quality control unit 490 notifies the image processing unit of the wireless communication device of the number of pixels or the range of the image that can be transmitted in frame units (step S939 ).

[0149] When the wireless communication system is formed by two or more base stations 300 , the processing performed by the image quality control unit 490 is performed for each base station 300 .

[0150] [Image Processing]

[0151] Figure 13 are diagrams illustrating exemplary aspects of image processing according to the second embodiment of the present technology.

[0152] Here, for example, an image processing unit is arranged in each of the wireless communication devices 101 to 106. More specifically, the video scope 111 included in an endoscope supporting a wireless communication function is mounted on a virtual reality (VR) head-mounted display (HMD). In this case, each of the wireless communication devices 101 to 106 includes: a receiving unit that receives instructions from the control device 400; and a transmitting unit that provides the image processed image to another wireless communication device. Here, the image processing unit can be arranged in another device (such as the control device 400 or the input device 500).

[0153] The image processing unit acquires information on image quality from the image quality control unit 490. For example, the image quality control unit 490 instructs the image processing unit via the control information transmission unit 495 to perform transmission in full HD.

[0154] Image quality control unit 490 instructs the image processing unit, via control information transmission unit 495, to transmit the specified range on the full HD screen. Here, for example, information outside the specified range on the full HD screen is transmitted in separate frame units (e.g., 10 fps). The image processing unit on the receiving side processes the image within the specified range so that it is updated at 60 fps, while images outside the specified range are updated at 10 fps. In this way, by reducing the frame rate of images outside the specified range on the full HD screen, the expected bit rate of the wireless communication bearer can be reduced.

[0155] A process of setting a low resolution or black image (black screen) can be performed for information outside a specified range in a screen with full HD. Therefore, the expected bit rate of wireless communication bearer can also be reduced.

[0156] Control can be performed to establish a new wireless communication bearer different from the wireless communication bearer used to transmit information within a specified range on a full HD screen, and transmit information outside the specified range on a full HD screen. In this case, a QCI with a larger packet delay budget is assigned to the newly established wireless communication bearer. Information outside the specified range is then buffered on the transmitting side each time so that it can be transmitted via the newly established wireless communication bearer. Therefore, information on a full HD screen can be transmitted without loss.

[0157] At this point, the image processing unit on the receiving side combines and reconstructs the information regarding images within the specified range and images outside the specified range, transmitted via the other wireless communication bearer, on a frame-by-frame basis. For example, the delay requirement for transmission to the image recording device 114 can be mitigated compared to the color monitor 113 included in the endoscope. Therefore, this solution is effective. Furthermore, by limiting the range of the image displayed by the color monitor 113 included in the endoscope, real-time performance can be guaranteed.

[0158] Like in a of the drawing, the center of the range specified in the screen with full HD can be set at the center of the initial value setting (default setting).

[0159] As in b of the accompanying drawings, the center of the designated range can be arbitrarily set based on a control signal linked to an operation on the video scope 111 or the VR head-mounted display. For example, an input unit for inputting 2D information (such as a mouse) can be arranged in the operation unit of the video scope 111 to obtain control information for dynamically changing the center of the designated range through 2D operation. For example, a sensor for detecting the viewpoint can be arranged in the VR head-mounted display, and control information for dynamically changing the center of the designated range can be obtained from the sensor.

[0160] In the above example, an example of full HD resolution has been given, but the resolution is not limited to this example. Of course, another resolution such as standard definition (SD), high definition (HD), 2K, 4K, or 8K can also be applied.

[0161] [operate]

[0162] Figure 14 1 is a diagram illustrating an example of a signaling flow among the wireless communication devices 101 and 102 , the base station 300 , and the control device 400 according to the second embodiment of the present technology.

[0163] Based on the above-described image quality control processing, image quality control unit 490 of control device 400 determines the bit rate required to meet the requested image quality by determining the minimum GBR or AMBR of any wireless communication bearer (811). In this case, image quality control unit 490 transmits control information for instructing transmission according to the requested image quality to image processing unit 101 via base station 300 (812 and 813). Upon receiving the control information for instructing transmission according to the requested image quality, image processing unit 101 performs settings to execute processing according to the requested image quality (814).

[0164] Based on the above-described image quality control process, it is assumed that the image quality control unit 490 of the control device 400 determines that the minimum GBR or AMBR of any wireless communication bearer does not meet the bit rate required for the requested image quality (821). In this case, the image quality control unit 490 calculates the range of images that can be transmitted using the minimum GBR or AMBR, and further determines a method for processing other areas (822).

[0165] The image quality control unit 490 of the control device 400 transmits a message notifying the range of images transmittable with the requested image quality and a method for processing other areas to the image processing unit of the wireless communication device 102 via the base station 300 (823 and 824). The image processing unit of the wireless communication device 102, which receives the message notifying the range of images transmittable with the requested image quality and a method for processing other areas, sets the range of the requested image quality and the method for processing other areas (825).

[0166] In this manner, in the second embodiment of the present technology, when the minimum GBR or AMBR corresponding to the QCI of the wireless communication bearer does not meet the bit rate required for the requested image quality, the image processing unit is notified of the range of images that can be transmitted with the requested image quality and the method for processing other areas. Therefore, by performing different types of image processing on each image range, the image processing unit can ensure the requested image quality across the required image range.

[0167] The above-described embodiments are ways of implementing the present technology, and the elements in the embodiments correspond to the specific elements of the present invention in the claims. Similarly, the specific elements of the present invention in the claims correspond to the elements with the same names in the embodiments of the present technology. The present technology is not limited to the embodiments, and various modifications of the embodiments can be made within the scope of the present technology without departing from the gist of the present technology.

[0168] The processing order described in the above embodiment can be determined as a method having a series of orders, or can be determined as a program that causes a computer to execute the series of orders or a recording medium storing the program. As a recording medium, for example, a compact disc (CD), a mini disc (MD), a digital versatile disc (DVD), a memory card, a Blu-ray (registered trademark) disc or a hard disk can be used. In addition, all or part of the program that causes a computer to execute the series of orders can be distributed to one or more devices and can be dynamically installed using a technology called virtualization. The one device or the multiple devices can be a device called a cloud server.

[0169] The advantageous effects in the embodiments described in this specification are merely exemplary and not limiting, and other advantageous effects may be obtained.

[0170] The present technology can be configured as follows.

[0171] (1) A control device comprising:

[0172] a capacity calculation unit configured to calculate a wireless communication capacity in a wireless network including a plurality of wireless communication devices based on information about a frequency bandwidth used in the wireless network;

[0173] a wireless communication request condition acquisition unit configured to acquire a request condition for a service provided in wireless communication between predetermined wireless communication devices among the plurality of wireless communication devices; and

[0174] The determining unit is configured to determine whether all wireless communication bearers established between the predetermined wireless communication devices meet a service request condition based on wireless communication capacity.

[0175] (2) The control device according to (1), wherein the request condition for the service includes at least one of an image quality condition and a delay condition.

[0176] (3) The control device according to (1), wherein the request condition for the service includes an image quality condition, a delay condition, and information indicating which condition takes priority between the image quality condition and the delay condition.

[0177] (4) The control device according to (2) or (3), wherein the request condition for the service includes a data rate condition instead of an image quality condition.

[0178] (5) The control device according to any one of (1) to (4), wherein the determination unit sets a QCI that satisfies the request condition of the service as a candidate, and determines that all wireless communication bearers satisfy the request condition of the service when all wireless communication bearers satisfy the set QCI.

[0179] (6) The control device according to (5), wherein the determination unit determines that all wireless communication bearers satisfy the request condition for the service when a sum of bit rates corresponding to the set QCI is equal to or smaller than the wireless communication capacity.

[0180] (7) The control device according to (6), wherein the determination unit uses the minimum guaranteed bit rate as the bit rate when the resource type of the set QCI is bit rate guaranteed, and uses the total maximum bit rate as the bit rate when the resource type of the set QCI is bit rate non-guaranteed.

[0181] (8) The control device according to any one of (1) to (7), further comprising:

[0182] The notification unit is configured to notify that not all wireless communication bearers meet the service request condition when it is determined that not all wireless communication bearers meet the service request condition.

[0183] (9) The control device according to (8), wherein the wireless communication request condition acquisition unit acquires a request condition for the new service input with respect to the notification, and

[0184] The determining unit determines whether all wireless communication bearers established between the predetermined wireless communication devices meet a request condition for a new service based on wireless communication capacity.

[0185] (10) A control device comprising:

[0186] a wireless communication request condition acquisition unit configured to acquire a request condition for a service provided for wireless communication between predetermined wireless communication devices forming a wireless network; and

[0187] The image control unit is configured to generate a bit rate required to meet the service request condition and perform image supply control on the wireless communication device of the image supply source according to whether the wireless communication bearer established between the predetermined wireless communication devices meets the generated bit rate.

[0188] (11) The control device according to (10), wherein the image control unit acquires a bit rate corresponding to the QCI identified for the wireless communication bearer, and performs image supply control according to whether the bit rate corresponding to the QCI satisfies the generated bit rate.

[0189] (12) A control device as described in (11), wherein, when the bit rate corresponding to the QCI does not satisfy the generated bit rate, the image control unit calculates the range of images that can be sent according to the bit rate corresponding to the QCI, and notifies the wireless communication device of the image supply source of the range.

[0190] (13) The control device according to (12), wherein the image control unit notifies the range of the image in units of frames.

[0191] (14) The control device according to (12) or (13), wherein the image control unit notifies a range of the image and a processing method of a range other than the range.

[0192] (15) The control device according to (14), wherein the processing method of the range other than the range of the image is a method of reducing a frame rate more than the range of the image.

[0193] (16) The control device according to (14), wherein the processing method of the range other than the range of the image is a method of reducing the resolution more than the range of the image.

[0194] (17) A wireless communication device comprising:

[0195] a receiving unit configured to receive an instruction on a range of images that can be transmitted and a request condition for a service to be provided in a wireless communication bearer established with another wireless communication device forming a wireless network;

[0196] an image processing unit configured to perform image processing on a predetermined image in response to the instruction; and

[0197] The transmitting unit is configured to provide the image processed image to the other wireless communication device.

[0198] (18) A method for controlling a wireless network, comprising:

[0199] a process in which a capacity calculation unit calculates a wireless communication capacity in a wireless network including a plurality of wireless communication devices based on information on a frequency bandwidth used in the wireless network;

[0200] a process in which the wireless communication request condition acquisition unit acquires a request condition for a service provided in wireless communication between predetermined wireless communication devices among the plurality of wireless communication devices; and

[0201] The determining unit determines whether all wireless communication bearers established between the predetermined wireless communication devices meet the service request condition based on the wireless communication capacity.

[0202] (19) A method for controlling a wireless network, comprising:

[0203] A process in which a wireless communication request condition acquisition unit acquires a request condition for a service provided for wireless communication between predetermined wireless communication devices forming a wireless network; and

[0204] The image control unit generates a bit rate required to meet the service request condition and performs a process of image supply control on the wireless communication device of the image supply source according to whether the wireless communication bearer established between the predetermined wireless communication devices meets the generated bit rate.

[0205] Label list

[0206] 101 to 106 wireless communication device

[0207] 111 Video Oscilloscope

[0208] 112 Video System Center

[0209] 113 color monitor

[0210] 114 Image Recording Device

[0211] 300 base stations

[0212] 400 Control Device

[0213] 410 transceiver unit

[0214] 420 Wireless Communication Request Condition Acquisition Unit

[0215] 430 Frequency bandwidth setting unit

[0216] 440 Capacity Calculation Unit

[0217] 450 QCI identification units

[0218] 460 QCI Distribution Unit

[0219] 470 QCI information retention unit

[0220] 480 Communication Bearer Management Unit

[0221] 490 Quality Control Unit

[0222] 495 Control Information Sending Unit

[0223] 500 Input Device

[0224] 510 transceiver unit

[0225] 520 input unit

[0226] 530 Reserved Unit

[0227] 540 display unit

Claims

1. A control device comprising: a wireless communication request condition acquisition unit configured to acquire a request condition for a service provided for wireless communication between predetermined wireless communication devices forming a wireless network; and an image control unit configured to identify a bit rate required to satisfy a request condition for a service, and to perform image supply control on the wireless communication device of the image supply source according to whether the wireless communication bearer established between the predetermined wireless communication devices satisfies the identified bit rate, wherein the image control unit acquires a bit rate corresponding to an index indicating a condition related to quality of service (QoS) identified for a wireless communication bearer, and performs image supply control according to whether the bit rate corresponding to the index indicating the condition related to QoS satisfies the identified bit rate, and When the bit rate corresponding to the index indicating the condition related to QoS does not satisfy the identified bit rate, the image control unit calculates the range of images that can be sent according to the bit rate corresponding to the index indicating the condition related to QoS, and notifies the wireless communication device of the image supply source of the range. 2 . The control device according to claim 1 , wherein the image control unit notifies the range of the image in units of frames. 3 . The control device according to claim 1 , wherein the image control unit notifies a range of the image and a processing method of a range other than the range of the image. 4 . The control device according to claim 3 , wherein the processing method of the range other than the range of the image is a method of reducing a frame rate more than the range of the image. 5 . The control device according to claim 3 , wherein a processing method of a range other than the range of the image is a method of reducing a resolution more than the range of the image. 6 . The control device according to claim 1 , wherein the service request condition includes at least one of a quality condition and a delay condition.

7. The control apparatus according to claim 6, wherein the request condition for the service further includes information indicating which condition takes priority between a condition related to image quality and a delay condition.

8. The control device according to claim 1, wherein: The priority used to classify the indexes indicating various conditions related to QoS is the priority when transmitting packets, and packets with high priority are preferentially transmitted.

9. The control device according to claim 1, wherein: The center of the range of the image is set in conjunction with an operation of an operation unit included in the wireless communication device.

10. The control device according to claim 1, wherein: The center of the range of the image is set in conjunction with an input of an input unit included in the wireless communication device.

11. The control device according to claim 1, wherein: The center of the range of the image is set in conjunction with a viewpoint detected by a sensor unit included in the wireless communication device.

12. The control device according to claim 1, wherein: The wireless communication between predetermined wireless communication devices is device-to-device (D2D) communication.

13. A method for controlling a wireless network, the method comprising: a process of acquiring a request condition for a service provided for wireless communication between predetermined wireless communication devices forming a wireless network; and a process of identifying a bit rate required to satisfy a request condition of the service and performing image supply control on the wireless communication device of the image supply source according to whether the wireless communication bearer established between the predetermined wireless communication devices satisfies the identified bit rate, wherein a bit rate corresponding to an index indicating a condition related to quality of service (QoS) identified for a wireless communication bearer is acquired, and image supply control is performed according to whether the bit rate corresponding to the index indicating the condition related to QoS satisfies the identified bit rate, and When the bit rate corresponding to the index indicating the condition related to QoS does not satisfy the identified bit rate, the range of images that can be sent according to the bit rate corresponding to the index indicating the condition related to QoS is calculated, and the wireless communication device of the image supply source is notified of the range.

14. A wireless communication network comprising: one or more wireless communication devices; base station device; and control device, Wherein, the control device includes: a wireless communication request condition acquisition unit that acquires a request condition for a service provided for wireless communication between predetermined wireless communication devices under management of the base station device; and an image control unit that identifies a bit rate required to satisfy a request condition for the service and performs image supply control on the wireless communication device that is a source of image supply based on whether the wireless communication bearer established between the predetermined wireless communication devices satisfies the identified bit rate, wherein the image control unit acquires a bit rate corresponding to an index indicating a condition related to quality of service (QoS) identified for a wireless communication bearer, and performs image supply control according to whether the bit rate corresponding to the index indicating the condition related to QoS satisfies the identified bit rate, and When the bit rate corresponding to the index indicating the condition related to QoS does not satisfy the identified bit rate, the image control unit calculates the range of images that can be sent according to the bit rate corresponding to the index indicating the condition related to QoS, and notifies the wireless communication device of the image supply source of the range.

Images