Communication apparatus and communication method

Abstract

The present communication device is one of a plurality of communication devices including at least a transmission device and a reception device, and includes a determination unit, the determination unit makes a determination on recovery control of a communication link between the transmitting device and the receiving device based on related information of a geographical relative position change between the transmitting device or the receiving device and the third object. The information related to the geographical relative position change is information acquired by sensing by the transmitting device, the receiving device, another communication device different from the transmitting device and the receiving device, or a third object.

Description

Technical Field

[0001] The present disclosure relates to a communication device and a communication method. Background Art

[0002] Technologies related to wireless communications, such as cellular communications, have been actively developed. In order to achieve more efficient communications, research on integrated sensing and communication has begun in recent years.

[0003] Reference List

[0004] Non-patent literature

[0005] Non-Patent Document 1: S1-214056, Qualcomm, “Cooperative Communication & Sensing, Motivations, Use Cases and Proposal”, November 2021 Summary of the Invention

[0006] Technical issues

[0007] It is assumed that efficient communication can be achieved by integrating sensing and communication. For example, it is assumed that a terminal device can efficiently use radio waves by detecting a decrease in communication quality with its own sensors and switching base stations. However, simply integrating sensing and communication does not always achieve communication with high communication performance (such as stable communication quality, high communication quality, low latency, high reliability, or high throughput).

[0008] Therefore, the present disclosure proposes a communication device and a communication method capable of achieving communication with high communication performance.

[0009] It should be noted that the aforementioned problem or purpose is only one of the multiple problems or purposes that can be solved or achieved by the multiple embodiments disclosed in this specification.

[0010] Solutions to Problems

[0011] In order to solve the aforementioned problem, a communication device according to an embodiment of the present disclosure is provided among a plurality of communication devices including at least a sending device and a receiving device, and the communication device includes: a determination unit, which makes a determination on the recovery control of the communication link between the sending device and the receiving device based on relevant information about the change in the geographical relative position between the sending device or the receiving device and a third object, wherein the relevant information about the change in the geographical relative position is information obtained by sensing by the sending device, the receiving device, another communication device different from the sending device and the receiving device, or a third object. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a diagram illustrating an example of sensing-assisted communication.

[0013] Figure 2 is a diagram illustrating another example of sensing-assisted communication.

[0014] Figure 3 is a diagram showing a configuration example of a communication system according to an embodiment of the present disclosure.

[0015] Figure 4 is a diagram showing a configuration example of a management device according to an embodiment of the present disclosure.

[0016] Figure 5 is a diagram showing a configuration example of a base station according to an embodiment of the present disclosure.

[0017] Figure 6 is a diagram showing a configuration example of a terminal device according to an embodiment of the present disclosure.

[0018] Figure 7 is a diagram illustrating a configuration example of an information processing apparatus according to an embodiment of the present disclosure.

[0019] Figure 8 is a diagram showing an example of a frame configuration.

[0020] Figure 9 is a diagram illustrating an example of a resource grid.

[0021] Figure 10 is a diagram showing an example of a bandwidth portion.

[0022] Figure 11A is a diagram showing an example of a time slot format.

[0023] Figure 11B is a diagram showing an example of a time slot format.

[0024] Figure 12 is a sequence diagram showing an example of conditional handover.

[0025] Figure 13A An example of setting an IE for a trigger event for conditional reconfiguration is shown.

[0026] Figure 13B The operational details of the conditional reconfiguration evaluation are shown.

[0027] Figure 14A An example of beam failure case reporting operation is shown.

[0028] Figure 14B An example of beam failure detection operation is shown.

[0029] Figure 15Ais a diagram illustrating an operation example of the communication system.

[0030] Figure 15B is a diagram illustrating another operation example of the communication system.

[0031] Figure 16A is a diagram showing an example of a control sequence of a basic mode.

[0032] Figure 16B is a diagram showing another example of the control sequence of the basic mode.

[0033] Figure 17A is a diagram showing an example of a control sequence according to the first application.

[0034] Figure 17B is a diagram showing another example of the control sequence of the first application.

[0035] Figure 17C is a diagram showing another example of the control sequence of the first application.

[0036] Figure 18A is a diagram showing an example of a control sequence according to the second application.

[0037] Figure 18B is a diagram showing another example of the control sequence according to the second application.

[0038] Figure 18C is a diagram showing another example of the control sequence according to the second application.

[0039] Figure 18D is a diagram showing another example of the control sequence according to the second application.

[0040] Figure 19A is a diagram showing an example of a control sequence according to the third application.

[0041] Figure 19B is a diagram showing another example of a control sequence according to the third application.

[0042] Figure 19C is a diagram showing another example of a control sequence according to the third application.

[0043] Figure 19D is a diagram showing another example of a control sequence according to the third application.

[0044] Figure 19E is a diagram showing another example of a control sequence according to the third application.

[0045] Figure 20A is a diagram showing an example of a control sequence according to the fourth application.

[0046] Figure 20B is a diagram showing another example of a control sequence according to the fourth application.

[0047] Figure 20C is a diagram showing another example of a control sequence according to the fourth application.

[0048] Figure 20D is a diagram showing another example of a control sequence according to the fourth application.

[0049] Figure 20E is a diagram showing another example of a control sequence according to the fourth application.

[0050] Figure 21 An example of changes in IE of the measurement information report is shown.

[0051] Figure 22 An example of changing the IE for setting a trigger event for conditional reconfiguration is shown.

[0052] Figure 23 Shown is a change example of the beam failure detection operation.

[0053] Figure 24 Shown is an example of a change in the beam failure case reporting operation.

[0054] Figure 25 Shown is an example of a change in the beam failure case reporting operation.

[0055] Figure 26 An example of a change in radio link monitoring operation is shown.

[0056] Figure 27 A change example 1 of the MAC layer operation in the random access procedure is shown.

[0057] Figure 28 A change example 2 of the MAC layer operation in the random access procedure is shown. DETAILED DESCRIPTION

[0058] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In each of the following embodiments, the same reference numerals are given to the same parts to omit repeated descriptions.

[0059] In addition, in this specification and the accompanying drawings, multiple components with substantially the same functional configuration may be distinguished by appending different numerals after the same reference numerals. For example, multiple components with substantially the same functional configuration may be distinguished as terminal devices 301, 302, and 303 when necessary. However, when it is not particularly necessary to distinguish each of the multiple components with substantially the same functional configuration, they are simply given the same reference numerals. For example, when it is not necessary to specifically distinguish terminal devices 301, 302, and 303, they are simply referred to as terminal device 30.

[0060] In the following description, one or more embodiments (including examples and modifications) can be implemented independently. On the other hand, at least some of the multiple embodiments described below can be appropriately combined with at least some other embodiments. The multiple embodiments can include novel features that are different from each other. Therefore, the multiple embodiments can contribute to solving different purposes or problems and can show different effects.

[0061] <<Overview>>

[0062] In recent years, research has begun on integrating sensing and communication. As such, there are two approaches to integrating sensing and communication: matching communication status with sensors (communication-assisted sensing) and applying sensing results to communication control (sensing-assisted communication). By integrating sensing and communication, it is expected that higher-precision sensor information will be acquired and more efficient communication control will be achieved.

[0063] An example of information expected to be acquired by sensors is information about objects without communication capabilities. Because electromagnetic waves (radio waves) are more linear in high-frequency bands (such as millimeter waves), obstruction by objects significantly impacts communication quality. Therefore, by predicting changes in the state of objects that could affect communication quality, communication devices can achieve seamless communication, such as by preemptively switching communication links.

[0064] For example, the communication device of this embodiment is any communication device selected from a plurality of communication devices including at least a transmitting device (e.g., a terminal device) and a receiving device (e.g., a base station). It should be noted that, in addition to the transmitting device and the receiving device, the plurality of communication devices may include another communication device different from the transmitting device and the receiving device. In other words, the communication device of this embodiment may be a communication device selected from a transmitting device, a receiving device, and another communication device. Based on information related to a change in the geographic relative position between the transmitting device or the receiving device and a third object (e.g., a truck or a pedestrian), the communication device makes a determination regarding recovery control of the communication link between the transmitting device and the receiving device. Here, the information related to the change in geographic relative position is information obtained through sensing performed by the transmitting device, the receiving device, a third communication device, or a third object. It should be noted that the recovery control also includes preventive control before blocking actually occurs. Here, the third communication device may be the transmitting device or the receiving device, or may be another communication device different from the transmitting device and the receiving device.

[0065] This operation will be described in more detail later with reference to the accompanying drawings.

[0066] Figure 1 is a diagram showing an example of sensing-assisted communication. Figure 1 In the example of , a base station is linked to an end device, and a pedestrian will pass between the base station and the end device. Figure 1 In the example of , the base station and the terminal device are receiving devices and / or transmitting devices, and the pedestrian is the third object. Figure 1 In an example, a base station or terminal device includes a sensor (e.g., a camera or a distance sensor) for detecting the status of a pedestrian. The base station or terminal device predicts communication obstruction through the sensor. Subsequently, the base station or terminal device implements communication link recovery control based on the prediction.

[0067] Figure 2 is a diagram showing another example of sensing-assisted communication. Figure 2 In the example of , a base station is linked to an end device, and a truck will pass between the base station and the end device. Figure 2 In the example of , the base station and the terminal device are the receiving device and the transmitting device, and the pedestrian is the third object. The vehicle following the truck is the third communication device. Figure 2 In the example shown in FIG2 , a vehicle following a truck includes a sensor (e.g., a distance sensor) that detects the truck's status. The vehicle behind the truck detects the truck's status using the sensor and reports the status to a base station or network. The base station then predicts communication blockage based on this information and implements communication link recovery control based on the prediction.

[0068] As a result, the communication device according to this embodiment can achieve communication with high communication performance. For example, because the communication device can implement recovery control (such as communication link switching) before negative effects on communication (such as radio link failure or beam link failure) occur, seamless communication can be achieved.

[0069] The overview of the present embodiment has been described above, and the communication system according to the present embodiment will be described in detail below.

[0070] <<Configuration of Communication System>>

[0071] First, the configuration of the communication system 1 will be described.

[0072] First, an overview of the configuration of the communication system 1 of this embodiment will be described. The communication system 1 is a wireless communication system that includes at least a base station 20 and a terminal device 30. The base station 20 can accommodate multiple terminal devices 30. The base station 20 can be connected to another base station 20, for example, via an X2 interface. In addition or alternatively, the base station 20 can be connected to another base station 20, for example, via an Xn interface. In addition or alternatively, the base station 20 can be connected to the base station 20 via an interface different from the X2 interface and the Xn interface (for example, an inter-base station interface). In addition, the base station 20 can be connected to the evolved packet core (EPC) via an S1 interface, for example. In addition, the base station 20 can be connected to the mobility management entity (MME) via an S1-MME interface, for example. In addition, the base station 20 can be connected to the serving gateway (S-GW) via an S1-U interface, for example. The S1 interface supports many-to-many connections between the MME and / or S-GW and the base station 20. In addition or alternatively, the base station 20 can be connected to the fifth generation core (5GC) via an NG interface, for example. In addition or alternatively, the base station 20 can be connected to the 5GC via an interface different from the S1 interface and the NG interface (for example, a base station to core network interface). In addition, in this embodiment, the base station 20 and the terminal device 30 can respectively support LTE and / or NR. In addition or alternatively, in this embodiment, the base station 20 and the terminal device 30 can each support 6G.

[0073] The overview of the configuration of the communication system 1 has been described above, and the configuration of the communication system 1 will be described in detail below.

[0074] Figure 3 1 is a diagram showing an example of the configuration of a communication system 1 according to an embodiment of the present disclosure. The communication system 1 includes a management device 10, a base station 20, a terminal device 30, and an information processing device 40. The communication system 1 provides users with a wireless network capable of implementing mobile communications through the coordinated operation of the wireless communication devices configuring the communication system 1. The wireless network of this embodiment includes, for example, a radio access network and a core network. It should be noted that in this embodiment, the wireless communication device is a device having a wireless communication function, and Figure 3In the example of , , the base station 20, the terminal device 30, and the information processing device 40 are corresponded. In the following description, a wireless communication apparatus may be simply referred to as a communication apparatus.

[0075] The communication system 1 may include a plurality of management devices 10, a plurality of base stations 20, a plurality of terminal devices 30, and a plurality of information processing devices 40. Figure 3 In the example of , the communication system 1 includes management devices 101 and 102 as the management device 10, and includes base stations 201, 202, and 203 as the base station 20. In addition, the communication system 1 includes terminal devices 301, 302, and 303 as the terminal device 30, and includes information processing devices 401 and 402 as the information processing device 40.

[0076] The terminal device 30 can be configured to be connectable to multiple networks. The network is, for example, a communication network, such as a local area network (LAN), a wide area network (WAN), a cellular network, a fixed-line network, a regional Internet Protocol (IP) network, or the Internet. The network may include a wired network and a wireless network. In addition, the network may include a core network. The core network is, for example, an evolved packet core (EPC) or a 5G core network (5GC). Of course, the network N may be a data network connected to the core network. The data network may also be a service network of a telecommunications operator, such as an IP multimedia subsystem (IMS) network. In addition, the data network may be a private network such as a company intranet.

[0077] The terminal device 30 can be connected to the network using one communication path, or can be connected to the network using multiple communication paths. In this case, one of the multiple communication paths or at least one of them can be a wireless communication path. For example, the communication path can be a wireless communication path (radio access network) between the terminal device 30 and the base station 20. In addition, the communication path can be a wireless communication path between the terminal device 30 and an access point. Of course, the multiple communication paths can include wired communication paths (e.g., wired LAN). It should be noted that the communication path can be the network itself.

[0078] When a wireless communication path is included in one or more communication paths, the terminal device 30 can be configured to connect to the network using radio access technologies (RATs) such as long term evolution (LTE), new radio (NR), Wi-Fi, Bluetooth (registered trademark), and 6G. In this case, the terminal device 30 can be configured to be able to use different radio access technologies (wireless communication systems). For example, the terminal device 30 can be configured to be able to use NR and Wi-Fi. In addition, the terminal device 30 can be configured to be able to use different cellular communication technologies (such as LTE, NR, or 6G). LTE and NR are types of cellular communication technologies, and mobile communication of terminal devices is achieved by arranging multiple cellular areas covered by base stations. In addition, the 6G here is also a type of cellular communication technology, and mobile communication of terminal devices is achieved by arranging multiple cellular areas covered by base stations.

[0079] It should be noted that in the following description, "LTE" includes LTE-Advanced (LTE-A), LTE-Advanced Professional (LTE-A Pro), and Evolved Universal Terrestrial Radio Access (EUTRA). NR also includes New Radio Access Technology (NRAT) and Further EUTRA (FEUTRA). It should be noted that a single base station can manage multiple cells. In the following description, cells corresponding to LTE are referred to as LTE cells, and cells corresponding to NR are referred to as NR cells.

[0080] NR is the next (fifth) generation radio access technology following LTE (including LTE-Advanced and LTE-Advanced Pro, the fourth generation of communications). NR is a radio access technology that can support various use cases, including enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). For example, within 3GPP (registered trademark), NR is being studied with the goal of developing a technical framework that addresses the use cases, requirements, and deployment scenarios for these use cases.

[0081] 6G is the next-generation cellular communication technology that follows NR or 5G System (5GS), which is the fifth generation of mobile communication, and includes radio access technology and network technology between base stations, core networks, and data networks. 6G may include the extreme connectivity of each of eMBB, mMTC, and URLLC, which are considered major use cases or requirements in NR, as well as new technologies in new areas such as AI (cognitive networks and AI-native air interfaces), sensing (including radar sensing and networks as sensors), and terahertz communication. Research on the standard specifications for 6G will begin in 3GPP around 2025, with the development of the initial specifications expected to be completed around 2028, and 6G will likely be commercialized after 2030.

[0082] It should be noted that the base station 20 configuring the communication system 1 can be a ground station or a non-ground station. The non-ground station can be a satellite station or an aircraft station. When the non-ground station is a satellite station, the communication system 1 can be a bent-pipe (transparent) type mobile satellite communication system.

[0083] In this embodiment, a ground station (also referred to as a ground base station) refers to a base station (including a relay station) installed on the ground. Here, "ground" is defined in a broad sense, including not only land but also underground, above water, and underwater. It should be noted that in the following description, "ground station" can be replaced by "gateway."

[0084] It should be noted that an LTE base station may be referred to as an evolved Node B (eNodeB) or eNB. In addition, an NR base station may be referred to as a gNodeB or gNB. A 6G base station may be referred to as a 6G NodeB (6GNB). In LTE, NR, and 6G, a terminal device (also referred to as a mobile station or terminal) may be referred to as user equipment (UE). It should be noted that the terminal device 30 is a type of communication device and is also referred to as a mobile station or terminal.

[0085] It should be noted that the terminal device 30 can connect to the network using radio access technologies (wireless communication systems) other than LTE, NR, 6G, Wi-Fi, and Bluetooth. For example, the terminal device 30 can connect to the network using low-power wide-area (LPWA) communication. In addition, the terminal device 30 can connect to the network using wireless communication of a specific standard.

[0086] Here, LPWA communication refers to wireless communication that implements low-power wide-area communication. For example, LPWA wireless is Internet of Things (IoT) wireless communication that uses a designated low-power radio (e.g., the 920 MHz band) or the Industrial, Scientific, and Medical (ISM) band. It should be noted that the LPWA communication used by the terminal device 30 may comply with an LPWA standard. Examples of LPWA standards include ELTRES, ZETA, SIGFOX, LoRaWAN, and NB-IoT. Of course, the LPWA standard is not limited thereto and may be another LPWA standard.

[0087] It should be noted that one or more communication paths may include a virtual network. For example, the multiple communication paths to which the terminal device 30 can be connected may include a virtual network such as a virtual local area network (VLAN) and a physical network such as an IP communication path. In this case, the terminal device 30 may implement routing control based on a routing control protocol such as Open Shortest Path First (OSPF) or Border Gateway Protocol (BGP).

[0088] In addition, the multiple communication paths may include one or more overlay networks or one or more network slices.

[0089] It should be noted that the devices in the drawings can be considered as devices in a logical sense. Figure 2 Some or all of the devices in the can be implemented through virtual machines (VMs), containers, containers, etc., and can be implemented on physically identical hardware.

[0090] The configuration of each device configuring the communication system 1 will be described in detail later. It should be noted that the configuration of each device described below is only an example. The configuration of each device may be different from the following configuration.

[0091] <Manage device configuration>

[0092] Next, the configuration of the management device 10 will be described.

[0093] The management device 10 is an information processing device (computer) that manages a wireless network. For example, the management device 10 is an information processing device that manages communications of the base station 20. The management device 10 may, for example, function as a mobility management entity (MME). The management device 10 may function as an access and mobility management function (AMF) and / or a session management function (SMF). The MME, AMF, and SMF are control plane network function nodes in the core network. The management device 10 may function as a 6G control plane network function (6G CPNF). The 6G CPNF may be configured to have one or more logical nodes. Obviously, the functions of the management device 10 are not limited to the MME, AMF, SMF, and 6G CPNF. The management device 10 may function as a network slice selection function (NSSF), an authentication server function (AUSF), a policy control function (PCF), or a unified data management (UDM). Furthermore, the management device 10 may function as a home subscriber server (HSS).

[0094] It should be noted that the management device 10 may function as a gateway. For example, the management device 10 may function as a serving gateway (S-GW) or a packet data network gateway (P-GW). Furthermore, the management device 10 may function as a user plane function (UPF). In this case, the management device 10 may have multiple UPFs. Furthermore, the management device 10 may function as a 6G user plane network function (6G UPNF).

[0095] The core network includes multiple network functions, each of which can be aggregated into a single physical device or distributed across multiple physical devices. In other words, the management device 10 can be distributed across multiple devices. Furthermore, this distributed deployment can be controlled to be implemented dynamically. Base stations 20 and management devices 10 configure a network and provide wireless communication services to terminal devices 30. Management devices 10 are connected to the Internet, and terminal devices 30 can use various Internet services through base stations 20.

[0096] It should be noted that the management device 10 is not necessarily a device that configures the core network. For example, assume that the core network is a Wideband Code Division Multiple Access (W-CDMA) or Code Division Multiple Access 2000 (cdma2000) core network. In this case, the management device 10 may be a device that acts as a Radio Network Controller (RNC).

[0097] Figure 4 1 is a diagram showing a configuration example of the management device 10 according to an embodiment of the present disclosure. The management device 10 includes a communication unit 11, a storage unit 12, and a control unit 13. It should be noted that Figure 4 The configuration shown in FIG is a functional configuration, and the hardware configuration may be different from the functional configuration. In addition, the functions of the management device 10 may be implemented in multiple physically separate structures in a static or dynamic distributed manner. For example, the management device 10 may include multiple server devices.

[0098] The communication unit 11 is a communication interface for communicating with other devices. The communication unit 11 can be a network interface or a device connection interface. For example, the communication unit 11 can be a local area network (LAN) interface such as a network interface card (NIC), or a universal serial bus (USB) interface including a USB host controller and a USB port. Furthermore, the communication unit 11 can be a wired interface or a wireless interface. The communication unit 11 serves as a communication device for the management device 10. The communication unit 11 communicates with the base station 20 and the like under the control of the control unit 13.

[0099] The storage unit 12 is a data readable / writable storage device, such as dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, or a hard disk. The storage unit 12 stores, for example, the connection status of the terminal device 30. For example, the storage unit stores the radio resource control (RRC) status, EPS connection management (ECM) status, or 5G system connection management (CM) status of the terminal device 30. The storage unit 12 can also serve as a home memory that stores the location information of the terminal device 30.

[0100] The control unit 13 is a controller that controls each part of the management device 10. The control unit 13 is implemented by a processor, such as a central processing unit (CPU), a microprocessing unit (MPU) or a graphics processing unit (GPU). For example, the control unit 13 is implemented by the processor using a random access memory (RAM) or the like as a working area to execute various programs stored in a storage device inside the management device 10. It should be noted that the control unit 13 can be implemented by an integrated circuit such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA). In addition, the control unit 13 can be implemented by a GPU. Any one of the CPU, MPU, ASIC, FPGA and GPU can be regarded as a controller. It should be noted that the control unit 13 can include multiple physically separated objects. For example, the control unit 13 can include multiple semiconductor chips.

[0101] It should be noted that the operation of the control unit 43 may be similar to the operations of the control unit 23 of the base station 20 , the control unit 33 of the terminal device 30 , and the control unit 43 of the information processing device 40 .

[0102] In addition, the management device 10 may include a sensor that acquires various information about wireless communication. At this time, the configuration of the sensor unit included in the management device 10 may be similar to the configuration of the sensor unit 34 included in the terminal device 30. The configuration of the sensor unit 34 will be described later.

[0103] <Base Station Configuration>

[0104] Next, the configuration of the base station 20 will be described.

[0105] The base station 20 is a wireless communication device that performs wireless communication with the terminal device 30. The base station 20 may be configured to perform wireless communication with the terminal device 30 via a relay station, or may be configured to perform wireless communication with the terminal device 30 directly.

[0106] The base station 20 is a type of communication device. More specifically, the base station 20 is a device corresponding to a radio base station (e.g., a base station, a node B, an eNB, a gNB, or a 6GNB) or a radio access point. The base station 20 may be a wireless relay station. In addition, the base station 20 may be an optical extension device referred to as a remote radio head (RRH) or a radio unit (RU). In addition, the base station 20 may be a receiving station such as a field pickup unit (FPU). In addition, the base station 20 may be an integrated access and backhaul (IAB) donor node or an IAB relay node that provides a radio access link and a radio backhaul link through time division multiplexing, frequency division multiplexing, or space division multiplexing.

[0107] It should be noted that the radio access technology used by the base station 20 may be a cellular communication technology or a wireless LAN technology. It is obvious that the radio access technology used by the base station 20 is not limited thereto and may be other radio access technologies. For example, the radio access technology used by the base station 20 may be a low power wide area (LPWA) communication technology. It is obvious that the wireless communication used by the base station 20 may be wireless communication using millimeter waves or wireless communication using terahertz waves. In addition, the wireless communication used by the base station 20 may be wireless communication using radio waves or wireless communication using infrared or visible light (optical). The base station 20 may be able to perform non-orthogonal multiple access (NOMA) communication with the terminal device 30. Here, NOMA communication is communication (sending, receiving or both) using non-orthogonal resources. It should be noted that the base station 20 may be able to implement NOMA communication with another base station 20.

[0108] It should be noted that the base stations 20 may be able to communicate with each other via a base station-core network interface (e.g., an NG interface and an S1 interface). This interface may be a wired or wireless interface. In addition, the base stations may be able to communicate with each other via an inter-base station interface (e.g., an Xn interface, an X2 interface, or an F1 interface). This interface may be a wired or wireless interface.

[0109] It should be noted that the concept of base station includes not only donor base stations but also relay base stations (also called relay stations). For example, a relay base station can be any of an RF repeater, a smart repeater, and a smart surface. Furthermore, the concept of base station includes not only a structure having base station functionality but also the equipment installed in the structure.

[0110] The structure is, for example, a building, such as a high-rise building, a house, a steel tower, a station facility, an airport facility, a port facility, an office building, a school building, a hospital, a factory, a commercial facility, or a stadium. It should be noted that the concept of structure includes not only buildings, but also non-building structures such as tunnels, bridges, dams, walls, or iron pillars, as well as equipment such as cranes, gates, or windmills. In addition, the concept of structure includes not only structures on land (on the ground in a narrow sense) or underground, but also structures on water such as docks or very large floating bodies, and underwater structures such as marine observation equipment. A base station may also be referred to as an information processing device.

[0111] The base station 20 may be a donor station or a relay station. In addition, the base station 20 may be a fixed station or a mobile station. A mobile station is a wireless communication device configured to be movable (e.g., a base station). In this case, the base station 20 may be a device installed in a mobile body, or may be the mobile body itself. For example, a relay station having mobility may be regarded as a base station 20 serving as a mobile station. In addition, devices such as vehicles, unmanned aerial vehicles (UAVs) represented by drones, or smartphones that are themselves mobile and have the function of a base station (at least a part of the function of a base station) also correspond to the base station 20 serving as a mobile station.

[0112] Here, the mobile object may be a mobile terminal such as a smartphone or mobile phone. In addition, the mobile object may be a mobile object that moves on land (ground in a narrow sense) (for example, vehicles including cars, bicycles, buses, trucks, motorcycles, trains, and linear electric vehicles), or a mobile object that moves underground (for example, in a tunnel) (for example, a subway). In addition, the mobile object may be a mobile object that moves on water (for example, ships such as passenger ships, cargo ships, or hovercrafts), or a mobile object that moves underwater (for example, submersible vessels such as semi-submersible ships, submarines, and unmanned submarines). It should be noted that the mobile object may be a mobile object that moves in the atmosphere (for example, aircraft such as airplanes, airships, or drones).

[0113] In addition, the base station 20 can be a ground base station device (ground station) installed on the ground. For example, the base station 20 can be a base station installed in a structure on the ground, or it can be a base station installed in a mobile body moving on the ground. More specifically, the base station 20 can be an antenna installed in a structure such as a building and a signal processing device connected to the antenna. It is obvious that the base station 20 can be the structure or the mobile body itself. "Ground" in a broad sense includes not only land (ground in a narrow sense), but also underground, above water, and underwater. It should be noted that the base station 20 is not limited to a ground base station. For example, when the communication system 1 is a satellite communication system, the base station 20 can be an aircraft station. From the perspective of a satellite station, an aircraft station located on the earth is a ground station.

[0114] It should be noted that the base station 20 is not limited to a ground station. The base station 20 may be a non-ground base station (non-ground station) capable of floating in the air or in space. For example, the base station 20 may be an aircraft station or a satellite station.

[0115] A satellite station is a satellite station capable of floating outside the atmosphere. A satellite station may be a device mounted on a space mobile object such as an artificial satellite, or may be the space mobile object itself. The space mobile object is a mobile object that moves outside the atmosphere. Examples of space mobile objects include artificial celestial bodies such as artificial satellites, spacecraft, space stations, and probes. A satellite serving as a satellite station may be any one of a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, and a highly elliptical orbit (HEO) satellite. Obviously, a satellite station may be a device mounted on a LEO satellite, a MEO satellite, a GEO satellite, or a HEO satellite.

[0116] An aircraft station is a wireless communication device capable of floating in the atmosphere, such as an aircraft. An aircraft station can be a device mounted on an aircraft, or it can be the aircraft itself. It should be noted that the concept of aircraft includes not only heavy aircraft such as airplanes and gliders, but also light aircraft such as balloons and airships. Furthermore, the concept of aircraft includes not only heavy and light aircraft, but also rotary-wing aircraft such as helicopters and gyroplanes. It should be noted that an aircraft station (or the aircraft on which the aircraft station is mounted) can be an unmanned aircraft such as a drone.

[0117] It should be noted that the concept of unmanned aerial vehicles also includes unmanned aerial vehicle systems (UAS) and tethered UAS. The concept of unmanned aerial vehicles also includes lighter-than-air (LTA) UAS and heavier-than-air (HTA) UAS. In addition, the concept of unmanned aerial vehicles also includes high-altitude UAS platforms (HAPs).

[0118] The coverage area of base station 20 can be large, such as a macrocell, or small, such as a picocell. Obviously, the coverage area of base station 20 can be extremely small, such as a femtocell. Furthermore, base station 20 can have beamforming capabilities. In this case, base station 20 can form beams for each cell or service area.

[0119] Figure 5 2 is a diagram showing a configuration example of a base station 20 according to an embodiment of the present disclosure. The base station 20 includes a wireless communication unit 21, a storage unit 22, and a control unit 23. It should be noted that Figure 5 The configuration shown in FIG is a functional configuration, and the hardware configuration may be different from the functional configuration. In addition, the functions of the base station 20 may be implemented in a plurality of physically separated configurations in a distributed manner.

[0120] The wireless communication unit 21 is a signal processing unit for wirelessly communicating with another wireless communication device (e.g., terminal device 30). The wireless communication unit 21 operates under the control of the control unit 23. The wireless communication unit 21 corresponds to one or more radio access systems. For example, the wireless communication unit 21 corresponds to at least one of NR, LTE, and 6G. In addition to NR, LTE, or 6G, the wireless communication unit 21 can be compatible with W-CDMA or cdma2000. In addition, the wireless communication unit 21 can support automatic retransmission technologies such as hybrid automatic repeat request (HARQ).

[0121] The wireless communication unit 21 includes a transmit processing unit 211, a receive processing unit 212, and an antenna 213. The wireless communication unit 21 may include multiple transmit processing units 211, multiple receive processing units 212, and multiple antennas 213. When the wireless communication unit 21 supports multiple radio access systems, each part of the wireless communication unit 21 may be configured separately for each radio access system. For example, the transmit processing unit 211 and the receive processing unit 212 may be configured separately for LTE, NR, and 6G. In addition, the antenna 213 may include multiple antenna elements (e.g., multiple patch antennas). In this case, the wireless communication unit 21 may be configured to implement beamforming. The wireless communication unit 21 may be configured to implement polarization beamforming using vertically polarized waves (V-polarized waves) and horizontally polarized waves (H-polarized waves) (or dual-polarized waves with polarization directions of 45 degrees and -45 degrees from the vertical direction).

[0122] The transmission processing unit 211 implements the transmission processing of downlink control information and downlink data. For example, the transmission processing unit 211 encodes the downlink control information and downlink data input from the control unit 23 using a coding system such as block coding, convolutional coding or turbo coding. Here, the coding can be implemented by polar code coding or low-density parity check code (LDPC code) coding. Subsequently, the transmission processing unit 211 modulates the coded bits using a predetermined modulation scheme such as BPSK, QPSK, 16QAM, 64QAM or 256QAM. In this case, the signal points on the constellation diagram do not necessarily need to be equidistant. The constellation diagram can be a non-uniform constellation diagram (NUC). The transmission processing unit 211 multiplexes the modulation symbols and downlink reference signals of each channel and arranges the multiplexing results in predetermined resource units. Subsequently, the transmission processing unit 211 performs various signal processing on the multiplexed signal. For example, the transmission processing unit 211 performs processing such as conversion to the frequency domain by fast Fourier transform, adding a guard interval, generating a baseband digital signal, converting to an analog signal, orthogonal modulation, up-conversion, removing unnecessary frequency components, and power amplification. The signal generated by the transmission processing unit 211 is transmitted from the antenna 213.

[0123] The receive processing unit 212 processes the uplink signal received via the antenna 213. The receive processing unit 212 performs downconversion on the uplink signal, removes unnecessary frequency components, controls the amplification level, performs orthogonal demodulation, converts the signal into a digital signal, removes the guard interval (cyclic prefix), and extracts the frequency domain signal using a fast Fourier transform. In this case, the receive processing unit 212 separates the uplink channel (such as the physical uplink shared channel (PUSCH) and the physical uplink control channel (PUCCH)) and the uplink reference signal from the signal after the aforementioned processing. The receive processing unit 212 demodulates the received signal using a modulation scheme such as binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) based on the modulation symbols of the uplink channel. The modulation scheme used for demodulation can be 16-quadrature amplitude modulation (16QAM), 64QAM, or 256QAM. In this case, the signal points on the constellation diagram do not necessarily need to be equidistant. The constellation diagram can be a non-uniform constellation (NUC). The reception processing unit 212 decodes the coded bits of the demodulated uplink channel. The decoded uplink data and uplink control information are output to the control unit 23.

[0124] Antenna 213 is an antenna device (antenna arrangement) that converts electric current and radio waves into each other. Antenna 213 may include one antenna element (e.g., one patch antenna), or may include multiple antenna elements (e.g., multiple patch antennas). When antenna 213 includes multiple antenna elements, wireless communication unit 21 may be configured to implement beamforming. For example, wireless communication unit 21 may be configured to generate a directional beam by controlling the directionality of the radio signal using multiple antenna elements. It should be noted that antenna 213 may be a dual-polarized antenna. When antenna 213 is a dual-polarized antenna, wireless communication unit 21 may use vertically polarized waves (V-polarized waves) and horizontally polarized waves (H-polarized waves) (or dual-polarized waves with polarization directions of 45 degrees and -45 degrees to the vertical direction) to transmit radio signals. Subsequently, wireless communication unit 21 may control the directionality of the radio signals transmitted using vertically polarized waves and horizontally polarized waves (or dual-polarized waves with polarization directions of 45 degrees and -45 degrees to the vertical direction). Furthermore, the wireless communication unit 21 may transmit and receive spatially multiplexed signals through multiple layers including a plurality of antenna units.

[0125] The storage unit 22 is a storage device capable of reading and writing data, such as DRAM, SRAM, flash memory, or a hard disk. The storage unit 22 serves as a storage device of the base station 20.

[0126] The control unit 23 is a controller that controls each unit of the base station 20. The control unit 23 is implemented by a processor such as a CPU or an MPU, for example. For example, the control unit 23 is implemented by the processor using RAM or the like as a work area to execute various programs stored in a storage device inside the base station 20. It should be noted that the control unit 23 can be implemented by an integrated circuit such as an ASIC or an FPGA. In addition, the control unit 23 can be implemented by a GPU. Any of a CPU, an MPU, an ASIC, an FPGA, and a GPU can be regarded as a controller. It should be noted that the control unit 23 can include multiple physically separate objects. For example, the control unit 23 can include multiple semiconductor chips.

[0127] like Figure 5As shown in , the control unit 23 includes an acquisition unit 231, a determination unit 232 and a communication control unit 233. Each block (acquisition unit 231 to communication control unit 233) configuring the control unit 23 is a functional block that indicates each function of the control unit 23. These functional blocks can be software blocks or hardware blocks. For example, each functional block described above can be a software module implemented by software (including microprograms), or can be a circuit block on a semiconductor chip (die). Obviously, each functional block can be a processor or an integrated circuit. It should be noted that the control unit 23 can be configured by functional units different from the functional blocks described above. The configuration method of the functional blocks is arbitrary.

[0128] It should be noted that the operation of each block of the configuration control unit 23 may be similar to the operation of each block included in the control unit 33 of the terminal device 30 and the operation of each block in the control unit 43 of the information processing device 40. In addition, the operation of the control unit 23 may be similar to the operation of the control unit 13 of the management device 10.

[0129] The sensor unit 24 is a sensor that acquires various information related to wireless communications. For example, the sensor unit 24 acquires information about objects surrounding the device. For example, the sensor unit 24 acquires information such as the position, shape, and movement of other objects (e.g., a third object, a communication device configuring a communication link, and a third communication device). The sensor unit 24 may also be a sensor for detecting the state of the device itself (e.g., the position, movement speed, inclination, vibration, and rotation of the base station 20).

[0130] Furthermore, the configuration of the sensor unit 24 may be similar to that of the sensor unit 34 included in the terminal device 30. For example, the sensor unit 24 may be a radio frequency sensor (RF sensor) or a non-RF sensor. Furthermore, the sensor unit 24 may be a sensor system (e.g., a sensor unit or a sensor module) in which an RF sensor and a non-RF sensor are combined. The configuration of the sensor unit 34 will be described later.

[0131] In some embodiments, the concept of a base station can be comprised of a collection of multiple physical or logical devices. For example, in this embodiment, a base station can be divided into multiple devices, such as a baseband unit (BBU) and a radio unit (RU). Subsequently, a base station can be interpreted as an assembly of multiple devices. Furthermore, a base station can be either or both a BBU and a RU. The BBU and RU can be connected via a predetermined interface, such as the enhanced Common Public Radio Interface (eCPRI). The RU can also be referred to as a remote radio unit (RRU) or a radio DoT (RD). Furthermore, the RU can correspond to the gNB distributed unit (gNB-DU) described later. Furthermore, the BBU can correspond to the gNB central unit (gNB-CU) described later. Alternatively, the RU can be a wireless device connected to the gNB-DU described later. The gNB-CU, gNB-DU, and RU connected to the gNB-DU can be configured to comply with the Open Radio Access Network (O-RAN). Furthermore, the RU can be a device integrated with an antenna. The antennas included in the base station (e.g., antennas integrated with the RU) can employ advanced antenna systems and support MIMO (e.g., full-dimensional (FD)-MIMO) or beamforming. In addition, the antenna included in the base station may include, for example, 64 transmit antenna ports and 64 receive antenna ports.

[0132] In addition, the antenna mounted on the RU can be an antenna panel including one or more antenna elements, and the RU can be equipped with one or more antenna panels. For example, the RU can be equipped with two types of antenna panels: horizontally polarized antenna panels and vertically polarized antenna panels, two types of antenna panels: clockwise circularly polarized antenna panels and counterclockwise circularly polarized antenna panels, or an antenna panel with a polarization direction of 45 degrees to the vertical direction and an antenna panel with a polarization direction of -45 degrees to the vertical direction. Multiple antennas with multiple polarization directions can be mounted on a single antenna panel. In addition, the RU can form and control independent beams for each antenna panel.

[0133] It should be noted that multiple base stations may be connected to each other. One or more base stations may be included in a radio access network (RAN). In this case, the base station may be simply referred to as a RAN, a RAN node, an access network (AN), or an AN node. It should be noted that the RAN in LTE is sometimes referred to as an enhanced universal terrestrial RAN (EUTRAN). In addition, the RAN in NR may be referred to as NGRAN. In addition, the RAN in 6G may be referred to as 6G RAN. In addition, the RAN in W-CDMA (UMTS) is sometimes referred to as UTRAN.

[0134] It should be noted that an LTE base station may be referred to as an evolved Node B (eNodeB) or eNB. In this case, the EUTRAN includes one or more eNodeBs (eNBs). In addition, an NR base station may be referred to as a gNodeB or gNB. In this case, the NGRAN includes one or more gNBs. A 6G base station may be referred to as a 6GNodeB, 6gNodeB, 6GNB, or 6gNB. In this case, the 6GRAN includes one or more 6GNBs. The EUTRAN may include a gNB (en-gNB) connected to the core network (EPC) in the LTE communication system (EPS). Similarly, the NGRAN may include an ng-eNB connected to the core network 5GC in the 5G communication system (5GS).

[0135] When a base station is an eNB, gNB, 6GNB, or the like, it may be referred to as a 3GPP access. Furthermore, when a base station is a radio access point, it may be referred to as a non-3GPP access. Furthermore, a base station may be an optical extension device called a remote radio head (RRH) or a radio unit (RU). Furthermore, when a base station is a gNB, it may be a combination of the gNB-CU and gNB-DU described above, or it may be either a gNB-CU or a gNB-DU.

[0136] Here, the gNB-CU hosts multiple higher layers in the access stratum (e.g., Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), and Packet Data Convergence Protocol (PDCP)) for communication with the UE. On the other hand, the gNB-DU hosts multiple lower layers in the access stratum (e.g., Radio Link Control (RLC), Medium Access Control (MAC), and Physical Layer (PHY)). In other words, among the messages / information described later, RRC signaling (semi-static notification) can be generated by the gNB-CU, while MAC CE and DCI (dynamic notification) can be generated by the gNB-DU. Alternatively, for example, in RRC configuration (semi-static notification), some configurations, such as IE: cellGroupConfig, can be generated by the gNB-DU, while the remaining configurations can be generated by the gNB-CU. These configurations can be sent and received via the F1 interface, described later.

[0137] It should be noted that a base station can be configured to communicate with another base station. For example, when the multiple base stations are eNBs or a combination of eNBs and en-gNBs, the base stations can be connected via an X2 interface. In addition, when the multiple base stations are gNBs or a combination of gn-eNBs and gNBs, the devices can be connected via an Xn interface. In addition, when the multiple base stations are a combination of gNB-CUs and gNB-DUs, the devices can be connected via the F1 interface described above. Messages / information (such as RRC signaling, MAC control element (MAC CE) or DCI) to be described later can be sent between multiple base stations, for example, via an X2 interface, an Xn interface or an F1 interface.

[0138] The cell provided by the base station is sometimes referred to as a serving cell, for example. A serving cell may include a primary cell (PCell) and a secondary cell (SCell). When dual connectivity is configured for a UE (e.g., terminal device 30), the PCell and zero or one or more SCells provided by a leading node (MN) may be referred to as a leading cell group. Examples of dual connectivity include EUTRA-EUTRA dual connectivity, EUTRA-NR dual connectivity (ENDC), EUTRA-NR dual connectivity with 5GC, NR-EUTRA dual connectivity (NEDC), and NR-NR dual connectivity. In addition, examples of dual connectivity include NR-6G dual connectivity and 6G-NR dual connectivity.

[0139] In addition, the serving cell may include a primary secondary cell (PSCell) or a primary SCG cell. In other words, when dual connectivity is set up for a UE, the PSCell and zero or one or more SCells provided by the secondary node (SN) are referred to as a secondary cell group (SCG). Unless otherwise specified (e.g., PUCCH on the SCell), the physical uplink control channel (PUCCH) is transmitted in the PCell and PSCell, but not in the SCell. In addition, radio link failure is also detected in the PCell and PSCell, but not in the SCell (undetectable). As described above, since the PCell and PSCell have special roles in the serving cell, they are also referred to as special cells (SpCells).

[0140] In a cell, one downlink component carrier and one uplink component carrier can be associated. Furthermore, the system bandwidth corresponding to a cell can be divided into multiple bandwidth parts (BWPs). In this case, one or more BWPs can be set for a UE, and the UE can use one BWP as the active BWP. Furthermore, the radio resources (e.g., frequency bandwidth, parameter set (subcarrier spacing), and time slot configuration) that can be used by the terminal device 30 can be different for each cell, each component carrier, or each BWP.

[0141] <Terminal device configuration>

[0142] Next, a description will be given of a configuration of the terminal device 30. The terminal device 30 may also be referred to as a user equipment (UE) 30.

[0143] Any form of computer can be used as the terminal device 30. The terminal device 30 can be a mobile terminal such as a mobile phone, a smart device (smartphone or tablet device), a personal digital assistant (PDA), or a notebook PC. In addition, the terminal device 30 can be an imaging device with a communication function (such as a camcorder). In addition, the terminal device 30 can be a motorcycle equipped with a communication device such as a field pickup unit (FPU), a mobile relay vehicle, etc. In addition, the terminal device 30 can be a machine-to-machine (M2M) device or an Internet of Things (IoT) device. In addition, the terminal device 30 can be a wearable device such as a smart watch.

[0144] In addition, the terminal device 30 can be an xR device, such as an augmented reality (AR) device, a virtual reality (VR) device, and a mixed reality (MR) device. In this case, the xR device can be an eyewear device such as AR glasses and MR glasses, or a head-mounted device such as a VR head-mounted display. When the terminal device 30 is an xR device, the terminal device 30 can be an independent device that only includes a user-worn part (such as a glasses part). In addition, the terminal device 30 can be a terminal interlocking device that includes a user-worn part (such as a glasses part) and a terminal part (such as a smart device) that is interlocked with the user-worn part.

[0145] It should be noted that the terminal device 30 can be configured to connect to multiple communication paths. For example, the terminal device 30 can be configured to connect to both Wi-Fi (registered trademark) and cellular networks. The terminal device 30 can be connected to multiple cellular networks. In this case, the multiple cellular networks can be associated with different subscriber identity modules (SIMs).

[0146] It should be noted that the terminal device 30 can be configured to switch and use multiple SIM cards. For example, the terminal device 30 can be compatible with dual SIM or triple SIM. Obviously, the terminal device 30 can be configured to accept more than three SIM cards. In addition, the terminal device 30 can be Remote SIM Provisioning (RSP). For example, the terminal device 30 can be compatible with embedded SIM (eSIM). RSP-compatible terminal devices can rewrite information related to wireless communications (hereinafter referred to as profiles) without replacing SIM cards.

[0147] It should be noted that the terminal device 30 may be able to implement NOMA communication with the base station 20. In addition, the terminal device 30 may be able to use automatic retransmission technologies such as HARQ when communicating with the base station 20. In addition, the terminal device 30 may be able to implement sidelink communication with another terminal device 30. The terminal device 30 may also be able to use automatic retransmission technologies such as HARQ when implementing sidelink communication. It should be noted that the terminal device 30 may also be able to implement NOMA communication in communication (sidelink) with other terminal devices 30. In addition, the terminal device 30 may be able to implement LPWA communication with other communication devices (such as the base station 20 and other terminal devices 30). In addition, the wireless communication used by the terminal device 30 may be wireless communication using millimeter waves. It should be noted that the wireless communication (including sidelink communication) used by the terminal device 30 may be wireless communication using radio waves or wireless communication (optical) using infrared or visible light.

[0148] In addition, the terminal device 30 can be a mobile device. The mobile device is a mobile wireless communication device. In this case, the terminal device 30 can be a wireless communication device installed in a mobile body, or it can be the mobile body itself. For example, the terminal device 30 can be a vehicle moving on the road, such as a car, a bus, a truck or a motorcycle, or it can be a wireless communication device installed on a vehicle. It should be noted that the mobile body can be a mobile terminal, or it can be a mobile body moving on land (on the ground in a narrow sense), underground, on water or underwater. In addition, the mobile body can be a mobile body moving in the atmosphere, such as a drone or a helicopter, or it can be a mobile body moving outside the atmosphere, such as an artificial satellite.

[0149] The terminal device 30 can simultaneously connect to multiple base stations or multiple cells to implement communications. For example, when a base station supports communication areas through multiple cells (e.g., pCells and sCells), it is possible to bundle the multiple cells together using carrier aggregation (CA), dual connectivity (DC), or multi-connectivity (MC) technology, and communicate between the base station 20 and the terminal device 30. Alternatively, the terminal device 30 and multiple base stations 20 can communicate with each other via the cells of different base stations 20 using coordinated multipoint transmission and reception (CoMP).

[0150] Figure 6 3 is a diagram showing a configuration example of a terminal device 30 according to an embodiment of the present disclosure. The terminal device 30 includes a wireless communication unit 31, a storage unit 32, a control unit 33, and a sensor unit 34. It should be noted that Figure 6 The configuration shown in FIG is a functional configuration, and the hardware configuration may be different from this configuration. In addition, the functions of the terminal device 30 may be implemented in a plurality of physically separated structures in a distributed manner.

[0151] The wireless communication unit 31 is a signal processing unit for wirelessly communicating with other wireless communication devices (such as the base station 20 and other terminal devices 30). The wireless communication unit 31 operates under the control of the control unit 33. The wireless communication unit 31 includes a transmission processing unit 311, a reception processing unit 312, and an antenna 313. The configuration of the wireless communication unit 31, the transmission processing unit 311, the reception processing unit 312, and the antenna 313 can be similar to the configuration of the wireless communication unit 21, the transmission processing unit 211, the reception processing unit 212, and the antenna 213 of the base station 20. In addition, similar to the wireless communication unit 21, the wireless communication unit 31 can be configured to be able to implement beamforming. In addition, similar to the wireless communication unit 21, the wireless communication unit 31 can be configured to be able to transmit and receive spatially multiplexed signals.

[0152] The storage unit 32 is a storage device capable of reading and writing data, such as DRAM, SRAM, flash memory, or a hard disk. The storage unit 32 serves as a storage device of the terminal device 30.

[0153] The control unit 33 is a controller that controls each part of the terminal device 30. The control unit 33 is implemented by a processor such as a CPU or an MPU, for example. For example, the control unit 33 is implemented by the processor using RAM or the like as a work area to execute various programs stored in a storage device inside the terminal device 30. It should be noted that the control unit 33 can be implemented by an integrated circuit such as an ASIC or an FPGA. In addition, the control unit 33 can be implemented by a GPU. Any of a CPU, an MPU, an ASIC, an FPGA, and a GPU can be regarded as a controller. It should be noted that the control unit 33 can include multiple physically separate objects. For example, the control unit 33 can include multiple semiconductor chips.

[0154] like Figure 6 As shown in , the control unit 33 includes an acquisition unit 331, a determination unit 332 and a communication control unit 333. Each block (acquisition unit 331 to communication control unit 333) configuring the control unit 33 is a functional block that indicates each function of the control unit 33. These functional blocks can be software blocks or hardware blocks. For example, each functional block described above can be a software module implemented by software (including microprograms), or can be a circuit block on a semiconductor chip (die). It is obvious that each functional block can be a processor or an integrated circuit. The control unit 33 can be configured by functional units different from the functional blocks described above. The configuration method of the functional blocks is arbitrary.

[0155] It should be noted that the operation of each block of the configuration control unit 33 may be similar to the operation of each block included in the control unit 23 of the base station 20 and the operation of each block included in the control unit 43 of the information processing device 40. In addition, the operation of the control unit 33 may be similar to the operation of the control unit 13 of the management device 10.

[0156] The sensor unit 34 is a sensor that acquires various information related to wireless communications. For example, the sensor unit 34 acquires information about objects surrounding the device. For example, the sensor unit 34 acquires information such as the position, shape, and movement of other objects (e.g., a third object, a communication device configuring a communication link, or a third communication device). The sensor unit 34 can also be a sensor for detecting the state of the device itself (e.g., the position, movement speed, inclination, vibration, and rotation of the terminal device 30).

[0157] The sensor unit 34 may be a radio frequency sensor (RF sensor) or a non-RF sensor. In addition, the sensor unit 34 may be a sensor system (eg, a sensor unit or a sensor module) in which an RF sensor and a non-RF sensor are combined.

[0158] RF sensors represent components that use radio waves to perform measurements.

[0159] Examples of RF sensors include radars that use radio waves such as millimeter waves. The radio waves used for the radar are not limited to those in the millimeter wave band (e.g., the 30 to 300 GHz band) and may be, for example, those in the microwave band (e.g., the 3 to 30 GHz band) or the quasi-millimeter wave band (e.g., the 20 to 30 GHz band).

[0160] Another example of an RF sensor is a wireless positioning sensor (wireless positioning system). Examples of wireless positioning sensors include global navigation satellite system (GNSS) sensors. Here, the GNSS sensor may be a global positioning system (GPS) sensor, a global navigation satellite system (GLONASS) sensor, a Galileo sensor, or a Quasi-Zenith Satellite System (QZSS) sensor. It should be noted that wireless positioning sensors are not limited to GNSS sensors, and examples include sensors for 3GPP positioning or Wi-Fi / Bluetooth positioning.

[0161] Non-RF sensors represent components that perform measurements without using radio waves.

[0162] Examples of non-RF sensors include distance measurement sensors (distance measurement systems) such as light detection and ranging (LiDAR). The light (e.g., laser beam) used by LiDAR is not limited to visible light and may be invisible light such as ultraviolet light, infrared light, and near-infrared light. Other examples of non-RF sensors include sonars that use sound waves (e.g., ultrasound waves).

[0163] Another example of a non-RF sensor is a camera. It should be noted that the camera is not limited to a visible light camera. For example, the camera may be a near-infrared camera, a mid-infrared camera, or a far-infrared camera. Furthermore, the camera may be a monocular camera or a stereo camera. Furthermore, another example of a non-RF sensor may be an image sensor. In this case, image plane phase difference pixels may be discretely embedded in the image sensor. Furthermore, the sensor unit 34 may be a time-of-flight (ToF) sensor or a microphone.

[0164] Other examples of non-RF sensors include accelerometers (e.g., three-axis accelerometers), velocity sensors, gyroscopes, inertial measurement units (IMUs), and other motion sensors. Other examples of non-RF sensors include magnetic sensors, barometers, and altimeters (e.g., barometers).

[0165] Furthermore, the sensor unit 34 may be a sensor that acquires various information used to predict the quality of a communication path (e.g., a communication path formed by a wireless communication unit). For example, the sensor unit 34 is a sensor that detects the reception S / N of radio waves received from another communication device (e.g., a communication device that will serve as a communication partner or a communication device other than a communication partner). Obviously, the information acquired by the sensor unit 34 is not limited to the reception S / N, as long as the information can be used to predict the quality of the communication path.

[0166] It is obvious that the sensor unit 24 is not limited to the sensors described above. In addition, the sensor unit 34 may be a sensor system (eg, a sensor unit or a sensor module) in which a plurality of the sensors described above are combined.

[0167] <Configuration of Information Processing Equipment>

[0168] First, the configuration of the information processing device 40 will be described.

[0169] Information processing device 40 is another communication device different from the transmitting device and the receiving device. In this case, information processing device 40 may have a configuration similar to base station 20, or may have a configuration similar to terminal device 30. It should be noted that information processing device 40 may also be management device 10. When the third object has a communication function, information processing device 40 may be the third object.

[0170] Figure 7 4 is a diagram showing a configuration example of an information processing device 40 according to an embodiment of the present disclosure. The information processing device 40 includes a communication unit 41, a storage unit 42, a control unit 43, and a sensor unit 44. It should be noted that Figure 7 The configuration shown in is a functional configuration, and the hardware configuration may be different from the functional configuration.

[0171] Furthermore, the functions of the information processing device 40 may be implemented in a distributed manner in a plurality of physically separate configurations. For example, the information processing device 40 may include a plurality of information processing devices.

[0172] The communication unit 41 is a communication interface for communicating with other devices. For example, the communication unit 41 is a network interface. For example, the communication unit 41 is a local area network (LAN) interface such as a network interface card (NIC). It should be noted that the communication unit 41 can be a wired interface or a wireless interface. The communication unit 41 serves as a communication device for the information processing device 40. Under the control of the control unit 43, the communication unit 41 communicates with other communication devices (e.g., the management device 10, the base station 20, the terminal device 30, or another information processing device 40).

[0173] The storage unit 42 is a data readable / writable storage device such as a dynamic random access memory (DRAM), a static random access memory (SRAM), a flash memory, or a hard disk. The storage unit 42 serves as a storage device of the information processing device 40.

[0174] The control unit 43 is a controller that controls each unit of the information processing device 40. The control unit 43 is implemented by a processor, such as a central processing unit (CPU) or a microprocessor unit (MPU). For example, the control unit 43 is implemented by the processor using a random access memory (RAM) or the like as a work area to execute various programs stored in a storage device inside the information processing device 40. It should be noted that the control unit 43 can be implemented by an integrated circuit such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA). In addition, the control unit 43 can be implemented by a GPU. Any one of the CPU, MPU, ASIC, FPGA and GPU can be regarded as a controller. It should be noted that the control unit 43 can include multiple physically separated objects. For example, the control unit 43 can include multiple semiconductor chips.

[0175] like Figure 7 As shown in , the control unit 43 includes an acquisition unit 431, a determination unit 432 and a communication control unit 433. Each block (acquisition unit 431 to communication control unit 433) of the configuration control unit 43 is a functional block that indicates each function of the control unit 43. These functional blocks can be software blocks or hardware blocks. For example, each functional block described above can be a software module implemented by software (including microprograms), or can be a circuit block on a semiconductor chip (die). Obviously, each functional block can be a processor or an integrated circuit. It should be noted that the control unit 43 can be configured by functional units different from the functional blocks described above. The configuration method of the functional blocks is arbitrary. It should be noted that the operation of each block of the configuration control unit 43 can be similar to the operation of each block included in the control unit 23 of the base station 20 and the operation of each block included in the control unit 43 of the terminal device 30.

[0176] The sensor unit 44 is a sensor that acquires various information related to wireless communications. For example, the sensor unit 44 acquires information about objects surrounding the device. For example, the sensor unit 44 acquires information such as the position, shape, and movement of other objects (e.g., a third object, a communication device configuring a communication link, or a third communication device). The sensor unit 44 may also be a sensor for detecting the state of the device itself (e.g., the position, movement speed, inclination, vibration, and rotation of the information processing device 40).

[0177] In addition, the configuration of the sensor unit 44 may be similar to that of the sensor unit 34 included in the terminal device 30. For example, the sensor unit 44 may be an RF sensor or a non-RF sensor. In addition, the sensor unit 44 may be a sensor system (e.g., a sensor unit or a sensor module) in which an RF sensor and a non-RF sensor are combined.

[0178] <<Basic Operation of Communication System 1>>

[0179] The configuration of the communication system 1 has been described above, and next, the basic operation of the communication system 1 will be described before describing the operation of the communication system 1 of the present embodiment in detail.

[0180] <Frame Configuration>

[0181] In a cellular wireless communication system, for example, a radio frame consisting of 10 milliseconds (ms) is defined. Figure 8 is a diagram showing an example of a frame configuration. Each radio frame consists of two half-frames. The time interval between half-frames is 5 ms. Each half-frame includes five subframes. The time interval between subframes is 1 ms. In addition, a subframe includes one or more time slots.

[0182] The time interval of the time slot depends on the parameter set (parameter set and OFDM parameter set). The parameter set is defined by the combination of subcarrier spacing (SCS) and cyclic prefix (CP). An example of the subcarrier spacing setting is shown in the table below (Table 1).

[0183] (Table 1) Subcarrier spacing setting

[0184]

[0185] The subcarrier spacing supported in the embodiment is defined by, for example, a power of 2 based on 15 kHz. Specifically, subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, and 960 kHz are supported. The time intervals of the time slots are 1 ms, 0.5 ms, 0.25 ms, 0.125 ms, 0.0625 ms, 0.03125 ms, and 0.015625 ms for subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, and 960 kHz, respectively. One time slot includes 14 symbols for a normal CP and 12 symbols for an extended CP.

[0186] <resource grid>

[0187] In each parameter set and carrier in the described embodiments, the transmitted physical signal or physical channel is represented by a resource grid. Figure 9is a diagram illustrating an example of a resource grid. A resource grid is defined by multiple resource elements. A resource element in a predetermined antenna port is represented by a subcarrier and a symbol. The index of a resource element at a predetermined antenna port can be represented by a combination of a subcarrier index and a symbol index.

[0188] In addition, in this embodiment, resource blocks are defined as units on the frequency axis. One resource block (RB), for example, includes 12 consecutive subcarriers on the frequency axis. Resource blocks include common resource blocks (CRBs), physical resource blocks (PRBs), and virtual resource blocks (VRBs). Common resource blocks are resource blocks defined as having a predetermined bandwidth and a predetermined parameter set. In all parameter sets, common resource blocks start at point A. The frequency indicated at point A is the center of subcarrier #0 of common resource block #0 in all parameter sets. Physical resource blocks are resource blocks defined in a predetermined bandwidth portion. Physical resource block indexes are numbered starting from 0 within their predetermined bandwidth portion. Virtual resource blocks are logical resource blocks and are used when mapping precoded signals of PDSCH or PUSCH to physical resource blocks.

[0189] Furthermore, in this embodiment it is possible to set a subset of contiguous common resource blocks called a bandwidth part (BWP). Figure 10 is a diagram illustrating an example of bandwidth parts. A bandwidth part with a predetermined parameter set falls within the bandwidth of the carrier defined by the parameter set. A maximum of four bandwidth parts are set for each terminal device 30. There is one active bandwidth part at a predetermined time. The terminal device 30 is not expected to receive PDSCH, PDCCH, and CSI-RS outside the downlink active bandwidth part. The terminal device 30 does not transmit PUSCH and PUCCH outside the uplink active bandwidth part. In the predetermined active cell, the terminal device 30 does not transmit SRS outside the uplink active bandwidth part.

[0190] <Time Slot Format>

[0191] In TDD cellular (unpaired spectrum), each of the 14 symbols in a time slot can be classified as downlink (DL), uplink (UL), or flexible. In downlink symbols, the terminal device can be used for reception. In uplink symbols, the terminal device can be used for transmission. In flexible symbols, the terminal device can be used for both transmission and reception. In addition, flexible symbols can be utilized as downlink and uplink switching periods or guard periods.

[0192] The status of these symbols is indicated in the TDD configuration information common to terminal devices (TDD-UL-DL-ConfigCommon), the TDD configuration information specific to each terminal device (TDD-UL-DL-ConfigDedicaated), and / or the time slot format index carried by DCI.

[0193] The TDD configuration information common to terminal devices includes information about the number of downlink time slots and downlink symbols, the number of uplink time slots and uplink symbols, and the uplink / downlink switching period. The TDD configuration information common to terminal devices includes information about all downlinks (all DL), all uplinks (all UL), or the number of downlink symbols and the number of uplink symbols for each symbol. The slot format index is an index of the slot format representing a combination of the states of the 14 symbols, and is specified in units of slots. The format indicating the slot format is also called the slot format indicator (SFI).

[0194] Uplink and downlink can be flexibly switched in symbol units through the TDD configuration or time slot format described above. Figure 11A and 11B are diagrams each showing an example of a slot format. In the drawings, D represents downlink, U represents uplink (UL), and F represents flexible.

[0195] exist Figure 11A In the example of , the 1st to 12th symbols are downlink symbols, the 13th symbol is a flexible symbol, and the 14th symbol is an uplink symbol. The SFI of this time slot is "DDDDDDDDDDDDFU" in the order starting from the head symbol of the time slot. As a result, transmission and reception of HARQ-ACK corresponding to PDSCH can be implemented in the same time slot. Figure 11B In the example, the first symbol is a downlink symbol, the second symbol is a flexible symbol, and the third to fourteenth symbols are uplink symbols. The SFI of this time slot is "DFUUUUUUUUUUUU" starting from the symbol of the time slot. As a result, the PUSCH corresponding to the UL grant can be transmitted and received in the same time slot.

[0196] <Conditional Reconfiguration>

[0197] Conditional reconfiguration means that when a terminal device 30 satisfies a predetermined condition, the configuration of the terminal device 30 is reset to predetermined parameters. Conditional reconfiguration is performed by the terminal device 30. The predetermined condition is set by the base station 20. Alternatively, the predetermined condition is preconfigured. The predetermined parameters used for reconfiguration are also set or preconfigured by the base station 20. Conditional reconfiguration uses, for example, a handover or PSCell change performed by the terminal device 30. The handover performed by the terminal device 30 during conditional reconfiguration is called a conditional handover. Figure 12 is a sequence diagram showing an example of conditional handover.

[0198] It should be noted that the information element (IE) setting the trigger event for conditional reconfiguration is, for example, Figure 13AAs shown in . Figure 13A An example of an IE for setting a trigger event for conditional reconfiguration is shown. Here, the trigger defined in 3GPP Release 16 is described in 3GPP TS 38.331 V16.10.0, and event A3 (condEventA3) and event A5 (condEventA5) are included in the IE (CondTriggerConfig) for setting a trigger for conditional reconfiguration.

[0199] Event A3 is triggered when the reception quality (e.g., RSRP, RSRQ, or SINR) of a neighboring cell is higher than the sum of the reception quality of the SpCell (e.g., PCell or PSCell) and the offset value. Event A3 is triggered when the following formula is satisfied.

[0200] Inequality A3-1 (entry condition)

[0201] Mn+Ofn+Ocn-Hys>Mp+Ofp+Ocp+Off

[0202] Inequality A3-2 (leaving condition)

[0203] Mn+Ofn+Ocn+Hys <Mp+Ofp+Ocp+Off

[0204] Here, Mn is the measurement result of the neighboring cell without considering the offset, Ofn is the measurement-specific offset of the reference signal of the neighboring cell, Ocn is the cell-specific offset of the neighboring cell, Mp is the measurement result of SpCell without considering the offset, Ofp is the measurement-specific offset of SpCell, Ocp is the cell-specific offset of SpCell, Hys is the hysteresis parameter for the event, and Off is the offset parameter for the event.

[0205] Event A5 is triggered when the reception quality (e.g., RSRP, RSRQ, or SINR) of the SpCell (PCell or PSCell) falls below a first threshold and the reception quality of the neighboring cell rises above a second threshold. Event A5 is triggered when the following formula is satisfied.

[0206] Inequality A5-1 (entry condition 1)

[0207] Mp+Hys <Thresh1

[0208] Inequality A5-2 (entry condition 2)

[0209] Mn+Ofn+Ocn-Hys>Thresh2

[0210] Inequality A5-3 (leaving condition 1)

[0211] Mp-Hys>Thresh1

[0212] Inequality A5-4 (leaving condition 2)

[0213] Mn+Ofn+Ocn+Hys <Thresh2

[0214] Here, Mp is the measurement result of the NR SpCell without considering the offset, Mn is the measurement result of the neighboring cell without considering the offset, Ofn is the measurement-specific offset of the reference signal of the neighboring cell, Ocn is the cell-specific offset of the neighboring cell, Hys is the hysteresis parameter for the event, Thresh1 is the first threshold parameter for the event, and Thresh2 is the second threshold parameter for the event.

[0215] As an evaluation in the conditional reconfiguration, the terminal device considers a cell with a physical cell identifier that matches the value included in the conditional reconfiguration as a valid (applicable) cell. Subsequently, when the Layer 3 filtered measurement result of the valid cell meets the entry condition specified by the conditional reconfiguration parameter, the terminal device considers the corresponding event to be satisfied. Alternatively, when the conditional reconfiguration setting is changed or the Layer 3 filtered measurement result of the valid cell meets the exit condition specified by the conditional reconfiguration parameter, the terminal device considers the corresponding event to be unsatisfied. If all conditions for the target candidate cell are met, the terminal device considers the target candidate cell to be the triggered cell and performs the conditional reconfiguration.

[0216] like Figure 13B As shown in , the operational details of the conditional reconfiguration evaluation are described in 3GPP TS 38.331 V16.10.0. Figure 13B is a diagram showing details of conditional reconfiguration evaluation.

[0217] <Beam Failure Detection>

[0218] When the quality of the predetermined beam is degraded, the physical layer reports the beam failure case to the higher layer. Specifically, in 3GPP TS 38.213 ( Figure 14A ) and implement the report in the operations described in . Figure 14A An example report showing a beam failure case.

[0219] In addition, in the medium access control (MAC), through 3GPP TS 38.321 ( Figure 14B ) fails to detect the beam. Figure 14BAn example of a beam failure detection operation is shown. Subsequently, beam failure recovery is triggered for the SCell, or a random access procedure is started for the SpCell.

[0220] <Beam Failure Recovery>

[0221] A communication device that detects a beam failure as described above performs a beam failure recovery operation. For example, the communication device performs a connection recovery operation using a beam with higher quality. In a communication device that triggers beam failure recovery, a random access procedure is triggered for the SpCell, or beam failure recovery is triggered for the SCell.

[0222] In the SpCell where beam failure is detected, beam failure recovery is implemented through random access procedures (4-step RACH procedure and 2-step RACH procedure). During the random access procedure, the terminal device re-implements beam selection and switches to a connection with a higher-quality beam. Subsequently, in the case of a contention-based random access procedure, a BFR MAC CE is included in the PUSCH of Msg3 in the 4-step RACH procedure or MSG A in the 2-step RACH procedure, thereby identifying beam failure of the terminal device.

[0223] In the SCell where beam failure is detected, the terminal device re-implements beam selection for the SCell and transmits a BFR MAC CE in any serving cell. By including information about beam failure for the SCell in the BFR MAC CE, it is possible to identify beam failure of the terminal device.

[0224] <Radio Link Monitoring>

[0225] Radio Link Monitoring (RLM) is used to maintain the stability of the connection establishment between the base station device and the terminal device in the RRC layer. RLM allows the terminal device to determine whether to maintain the downlink connection.

[0226] The terminal device detects the quality of the connection (link) with the connected base station device (cell and serving cell) and monitors the downlink quality of the PCell to indicate the in-sync state or out-of-sync state to higher layers. In addition, when dual connectivity is configured and parameters related to radio link failure (RLF) are provided from higher layers, the terminal device monitors the downlink quality of the PSCell. Hereinafter, monitoring downlink quality is also referred to as RLM measurement.

[0227] The downlink quality (downlink radio link quality or downlink link quality) is monitored based on the SS / PBCH blocks or CSI-RS. For example, the downlink quality is calculated based on the received power of the SS / PBCH blocks (SSB and SS blocks) or CSI-RS of the serving cell.

[0228] The radio link quality is evaluated by comparing the downlink radio link with a threshold value to indicate whether it is in-sync or out-of-sync. As the threshold value, a threshold value Q for determining in-sync is defined. in and the threshold Q used to determine out-of-sync out .

[0229] In the physical layer of the terminal device, when the radio link quality of all resources configured for radio link monitoring is lower than the threshold Q out When the radio link quality of any resource configured for radio link monitoring is higher than the threshold Q in When in-sync, report to the higher layer.

[0230] For example, the threshold Q out The out-of-sync block error rate of the virtual PDCCH transmission corresponds to a predetermined ratio. The predetermined ratio of the out-of-sync block error rate is set by a higher layer parameter (rlmInSyncOutOfSyncThreshold), and the default value is 10% when the higher layer parameter is not set. In addition, the threshold Q in For example, the reception quality ratio threshold Q is defined as out The synchronization block error rate of the virtual PDCCH transmission is better than the predetermined ratio. The predetermined ratio of the synchronization block error rate is set by a higher layer parameter (rlmInSyncOutOfSyncThreshold) and has a default value of 2% when the higher layer parameter is not set.

[0231] The time interval T used to evaluate in-sync Evaluate_in and the time interval T used to evaluate out-of-sync Evaluate_out A predetermined time interval for evaluating the radio link quality in the terminal device is defined separately. In addition, different evaluation intervals are defined for SS / PBCH blocks and CSI-RS.

[0232] When out-of-sync is reported continuously for a predetermined number of times (N310) set by the RLF-related parameters, the higher layer determines that there is a problem with the radio link quality of the physical layer, and the RLF timer (T310) runs. When in-sync is reported continuously for a predetermined number of times (N311) set by the RLF-related parameters before the RLF timer (T310) expires, the higher layer determines that the problem with the radio link quality of the physical layer is recovered, and the RLF timer (T310) stops. On the other hand, when in-sync is not reported continuously for the predetermined number of times (N311) and the RLF timer (T310) expires, it is regarded as RLF (Radio Link Failure).

[0233] <<Operation of Communication System>>

[0234] The foregoing describes the basic operation of the communication system 1. Next, the operation of the communication system 1 of this embodiment will be described in detail.

[0235] As described above, the communication device of this embodiment is any one of a plurality of communication devices including at least a transmitting device and a receiving device. In addition to the transmitting device and the receiving device, the plurality of communication devices may also include another communication device (hereinafter also referred to as a third communication device) that is different from the transmitting device and the receiving device. When the third object has a communication function, the plurality of communication devices may also include a third object with a communication function in addition to the transmitting device and the receiving device. The communication device of this embodiment may be a communication device selected from among the aforementioned plurality of communication devices. Based on the information about the third object acquired by sensing, the communication device makes a determination on the recovery control of the communication link between the transmitting device and the receiving device. For example, based on relevant information on the change in the geographical relative position between the transmitting device or the receiving device and the third object, the communication device makes a determination on the recovery control of the communication link between the transmitting device and the receiving device.

[0236] Figure 15A is a diagram showing an operation example of the communication system 1. Figure 15A In the example of , the base station 20 is wirelessly linked to the terminal device 30, and pedestrians will pass between the base station 20 and the terminal device 30. Figure 15A In the example of , the base station 20 and the terminal device 30 are receiving devices and / or transmitting devices, and the pedestrian is the third object. Figure 15A In the example shown in FIG, terminal device 30 includes a sensor unit 34 (e.g., a camera) that detects the status of a pedestrian. Terminal device 30 notifies base station 20 of the information detected by sensor unit 34 as information about a third object. Based on the information about the third object, base station 20 determines whether to resume control of the communication link between the transmitting device and the receiving device.

[0237] Figure 15B is a diagram showing another operation example of the communication system 1. Figure 15B In the example of , the base station 20 is wirelessly linked to the terminal device 30, and the truck will pass between the base station 20 and the terminal device 30. Figure 15B In the example of , the base station 20 and the terminal device 30 are receiving devices and / or transmitting devices, and the truck is the third object. The vehicle (information processing device 401) following the truck is the third communication device. Figure 15B In the example shown in FIG4 , the vehicle (information processing device 401) following the truck includes a sensor (e.g., a distance measurement sensor such as LiDAR or millimeter-wave radar). Terminal device 30 notifies base station 20 of information detected by the vehicle's sensor as information about a third object. Based on this information about the third object, base station 20 determines whether to resume control of the communication link between the transmitting and receiving devices.

[0238] It should be noted that Figure 15A and 15B The examples shown in are for illustrative purposes only. Figure 15A and 15B The example shown in .

[0239] <Communication device>

[0240] The communication device that is the operating subject of this embodiment (for example, the communication device that makes the determination related to the recovery control) can be a transmitting device or a receiving device. The transmitting device and the receiving device are communication devices connected via a predetermined communication link (for example, a downlink, an uplink, and a sidelink). When the predetermined communication link is an uplink, the transmitting device is the terminal device 30, and the receiving device is the base station 20. When the predetermined communication link is a downlink, the transmitting device is the base station 20, and the receiving device is the terminal device 30. When the predetermined communication link is a sidelink communication, the transmitting device is the terminal device 30, and the receiving device is another terminal device 30.

[0241] In addition, the communication device that is the operating subject of this embodiment may be a third communication device different from the transmitting device and the receiving device. In this case, the third communication device may be the management device 10 or the base station 20. In addition, the third communication device may be the terminal device 30 or the information processing device 40.

[0242] It should be noted that when the third object has a communication function, the communication device that will be the operating subject of this embodiment may be the third object. The third object will be described later.

[0243] <Third Object>

[0244] The third object is an object other than a communication device (transmitting device and receiving device) connected via a predetermined communication link (downlink, uplink, and sidelink). The third object can be a communication device with communication capabilities (such as base station 20, terminal device 30, and information processing device 40), a device without communication capabilities (such as a vehicle or machine), or an object that is not a device (such as a person, tree, cloud, or table). The third object can be an object that moves from a predetermined location (a mobile object) or an object that is fixed at a predetermined location.

[0245] The third object is generally an object that greatly changes the communication environment. In the microwave band, an object with high reflectivity (such as a metal object) can be assumed to be the third object. In the millimeter wave band, in addition to objects with high reflectivity, an object with a large amount of radio wave attenuation (an object with a large amount of moisture) can be assumed to be the third object. On the contrary, an object with high radio wave transmittance (such as an object made of wood or glass) cannot be regarded as the third object. It is obvious that the third object is not limited to the examples given here.

[0246] <Information about the third object>

[0247] In this embodiment, the third object is detected by sensing using a sensor (e.g., sensor unit 34 or sensor unit 44). In the following description, the information detected by sensing may be referred to as information about the third object. It should be noted that the information about the third object is not limited to the information obtained by sensing (hereinafter referred to as sensor information). The information about the third object may be information obtained by performing predetermined processing on the sensor information. At this time, the device that performs the predetermined processing is not limited to the device that performs sensing (hereinafter also referred to as a sensing device). The sensing device may be a sending device, a receiving device, or a third communication device. When the third object includes a sensor such as a GNSS sensor, the sensing device may be the third object.

[0248] The information about the third object is, for example, the position information (geographic location information) of the third object. In this case, the position information of the third object may be absolute position information. For example, the position information may be the position information of the third object in a global coordinate system.

[0249] In addition, the position information of the third object may be relative position information. For example, the position information may be relative position information of the third object based on the position of a predetermined object. For example, the position information may be information about the position of the third object in a coordinate system based on the position of the sensing device. In addition, the position information may be information about the position of the third object in a coordinate system based on the position of the communication device (receiving device or transmitting device) that configures the communication link. It should be noted that when the position information is relative position information, the reference position of the coordinate system may be moving. For example, when the position of the receiving device or the transmitting device is used as a reference, the receiving device or the transmitting device may be moving. In addition, the position information may be relative position information of the third object based on the position of the communication link. At this time, the position of the communication link may be a straight line connecting the transmitting device and the receiving device.

[0250] In addition, the position information may be information that is a combination of multiple pieces of position information. For example, the position information may be information that is a combination of relative position information and absolute position information. For example, the position information of the third object may be information that is a combination of the position information of the sensing device in the global coordinate system and the position information of the third object in the coordinate system based on the position of the sensing device. In addition, the position information may be information that is a combination of multiple pieces of relative position information. For example, the position information may be information related to a combination of information about the position of the receiving device and / or the transmitting device in the coordinate system with reference to the position of the sensing device and the position information of the third object in the coordinate system with reference to the position of the sensing device. In addition, the position information may be information that is a combination of one or more pieces of absolute position information and one or more pieces of relative position information.

[0251] The position information may be expressed in an orthogonal coordinate system represented by vertical and horizontal heights or latitude and longitude altitudes, or may be expressed in another coordinate system such as a polar coordinate system represented by distance and two-axis angles.

[0252] In addition, the information about the third object may be information about a change in the geographical relative position between the transmitting device or the receiving device and the third object (hereinafter also referred to as geographical relative position change information of the third object). For example, the geographical relative position change information of the third object may be information about a change in the relative position of the third object relative to the position of the transmitting device or the receiving device. Alternatively, the geographical relative position change information of the third object may be information about a change in the relative position of the third object relative to a reference position determined with reference to the position of the transmitting device or the receiving device. At this time, the reference position may be a point (the midpoint between the transmitting device and the receiving device) or a line (e.g., a straight line connecting the transmitting device and the receiving device). When the reference position is a straight line connecting the transmitting device and the receiving device, the change information about the third object may be information about a change in the shortest distance between the straight line connecting the transmitting device and the receiving device and the third object. It is obvious that the reference position is not limited to a point and a line, and may be, for example, a plane.

[0253] It should be noted that the communication quality between the transmitting device and the receiving device may change due to the change in the geographical relative position of the third object. Here, the change in communication quality caused by the change in the geographical relative position of the third object is generally radio wave blocking (blocking). However, the change in communication quality caused by the change in the geographical relative position of the third object is not limited to this example. For example, the change in communication quality caused by the change in the geographical relative position can be the scattering (scattering) of radio waves. As another example, the change in communication quality caused by the change in the geographical relative position can be radio wave focusing (focusing). As another example, the change in communication quality caused by the change in the geographical relative position can be the transmission of radio waves. In other words, the change in communication quality between the transmitting device and the receiving device can occur in cases other than when the third object passes between the transmitting device and the receiving device. It is obvious that the change in communication quality is not limited to blocking and scattering. For example, when the third object is a device that emits radio waves, the change in communication quality can be a change in communication quality caused by radio wave interference from the third object.

[0254] The information about the third object may be information about the size of the third object. In this case, the information about the third object may be information about a change in the size of the third object. It is also possible to predict a change in communication quality based on a change in the size of the third object.

[0255] The information about the third object may be information about the movement speed and / or movement direction of the third object. In this case, the information about the movement speed may be information about the absolute movement speed or information about the relative movement speed. The absolute movement speed is, for example, the movement speed of the third object in a global coordinate system. Alternatively, the relative movement speed is the movement speed of the third object in a coordinate system based on the position of the communication device (receiving device or transmitting device) configuring the communication link.

[0256] The information about the third object may be information about the material of the third object. For example, the third object's reflectivity of radio waves or light can be used as information about the material of the third object. The impact on communication varies depending on the material of the third object. For example, the impact on communication varies depending on whether the third object is made of metal, wood, or glass. Therefore, it is possible to predict changes in communication quality based on the material of the third object.

[0257] It should be noted that the information regarding the third object is not limited to the information described above. For example, the information regarding the third object may be information regarding the posture or shape of the third object. Information regarding the posture of the third object may include information regarding a change in the posture of the third object. Information regarding the shape of the third object may include information regarding a change in the shape of the third object.

[0258] The information about the third object may include multiple items of information selected from the multiple items of information described above. For example, the information about the third object may be information about the position, size, moving speed, moving direction, and material of the third object.

[0259] <Sensor for Acquiring Information About Third Object>

[0260] The sensor (eg, sensor unit 24, sensor unit 34, and / or sensor unit 44) that acquires information about the third object may be an RF sensor or a non-RF sensor.

[0261] -When the information about the third object is position information about the third object

[0262] As the sensor used to acquire the location information of the third object, an RF sensor is assumed. In this case, when acquiring the location information of the third object including a receiving device, the RF sensor used may be a wireless positioning sensor (e.g., 3GPP positioning, Wi-Fi / Bluetooth positioning, or a GNSS sensor). Furthermore, when acquiring the location information of the third object without a receiving device, the RF sensor used may be a radar.

[0263] Assuming that a non-RF sensor is used as the sensor for acquiring the position information of the third object, the non-RF sensor used may be a camera, a distance sensor (such as a ToF sensor), a LiDAR, or a pressure gauge (barometer).

[0264] -When the information about the third object is size information of the third object

[0265] Assuming that a non-RF sensor is used as the sensor for acquiring the size information of the third object, the non-RF sensor used may be a camera.

[0266] -When the information about the third object is information about the moving direction or moving speed of the third object

[0267] Assume that a non-RF sensor is used as a sensor for acquiring information about the movement direction or movement speed of the third object. The non-RF sensor used may be an accelerometer (e.g., a three-axis accelerometer). It should be noted that the communication device can estimate the movement direction or movement speed of the third object based on the position information described above. The communication device can estimate the movement direction or movement speed of the third object based on differences between multiple pieces of position information acquired at different times.

[0268] -When the information about the third object is material information of the third object

[0269] Assume that a camera or radar / LiDAR is used as a sensor to obtain material information of a third object. In the case of a camera, the material of the third object can be determined because the color changes depending on the material. In the case of radar / LiDAR, the reflection coefficient changes depending on the material, so the material of the third object can be determined based on the intensity or state of the signal reflected from the third object.

[0270] <Subject Sensing Information About Third Object>

[0271] The subject that senses the information about the third object may be a communication device (eg, a transmitting device or a receiving device) configuring a communication link. In this case, the communication device may acquire the information about the third object using a sensor included in the communication device.

[0272] The entity sensing information about the third object may be a communication device (e.g., a third object or a third communication device) that is not configured with a communication link. In this case, the communication device can obtain information about the third object and transmit the information to another communication device (e.g., a transmitting device or a receiving device). For example, if the third object has a sensor and communication functionality, the third object can use the sensor to obtain information about the third object and use the communication functionality to transmit the information to the communication device configured with the communication link. Furthermore, if the third communication device includes a sensor, the third communication device can use the sensor to obtain information about the third object and use the communication functionality to transmit the information to the communication device configured with the communication link.

[0273] The subject that senses the information about the third object may be a network-side device (eg, the management device 10 or the base station 20). At this time, the network-side device may acquire the information about the third object using a sensor included in the network-side device.

[0274] <Capability Report of Sensor for Acquiring Information About Third Object>

[0275] The terminal device having the aforementioned sensor and supporting the sensing-assisted communication function reports sensor capability information to the network (base station and / or other terminal devices). As a result, the terminal device can be configured by the network to have the sensing-assisted communication function.

[0276] As an example of the sensor capability information to be reported, information about the type of sensor installed on the terminal device (eg, wireless positioning sensor, radar, camera, distance sensor, or LiDAR) is reported to the network.

[0277] As another example of sensor capability information to be reported, information about the type of information that can be obtained by the sensor (e.g., position information of a third object, size information of a third object, moving speed information of a third object, or material information of a third object) is reported to the network.

[0278] It should be noted that, as will be described later, the sensor capability information may additionally include parameters regarding the reliability of information obtained by the sensor.

[0279] It should be noted that in addition to its own sensor capability information, the terminal device can report the sensor capability information of another communication device in the network (e.g., another terminal device). In addition, even when the terminal device does not include a sensor and a sensing-assisted communication function, the terminal device can alternatively report the sensor capabilities of another communication device in the network. As a result, for example, sensing-assisted communication can be implemented using a sensor of another communication device that does not communicate with the base station (e.g., a terminal device that implements sidelink communication outside the area or a communication device that implements communication using another RAT).

[0280] Expects sensor capability information to be reported when a report is requested from the network.

[0281] <Communication Recovery Control>

[0282] Based on information regarding a change in the relative geographic position between a transmitting device or a receiving device and a third object, the communication device determines whether to restore the communication link between the transmitting device and the receiving device (hereinafter referred to as communication restoration control). The communication restoration control may include at least one of the aforementioned conditional reconfiguration and beam failure restoration. The communication restoration control may include controls other than conditional reconfiguration and beam failure restoration. For example, the communication restoration control may include parameter settings, changes, and reconnections for restoring communication links between multiple communication devices.

[0283] It should be noted that communication recovery control is not limited to the control described above. For example, communication recovery control may be preventive control before a communication failure (radio link failure (RLF), beam failure, etc.) occurs. For example, communication recovery control may be control implemented by a communication device (transmitting device and / or receiving device) to improve communication quality.

[0284] Furthermore, communication recovery control may be control related to a communication connection in which a communication failure occurs while the communication connection is maintained. For example, when a failure occurs in the connection, communication recovery control may be control for allowing the communication device that established the connection to resume communication while maintaining all or part of the configuration for the connection. Furthermore, communication recovery control may be control for discarding the settings that caused the communication failure (e.g., transmit and / or receive beams or radio resources) and resetting the discarded portion necessary for the connection.

[0285] Furthermore, the communication restoration control may be a control for setting up an additional communication link to increase redundancy of the communication connection regardless of the quality of the current communication link. For example, the control may be such that the communication link is reconfigured when it is determined based on information about the third object that configuring a new communication link is possible.

[0286] <Specific processing example>

[0287] A specific processing example of the communication system 1 of this embodiment will be described later.

[0288] The processing performed by the communication system 1 of this embodiment includes the following steps: acquiring information about a third object by sensing (S1), making a determination about communication recovery control based on the information about the third object (S2), and applying (executing) communication recovery control based on the determination (S3).

[0289] Here, the processing in (S1) and (S2) is performed by any one of the receiving device, the transmitting device, the third object, and the other transmitting device. It should be noted that the processing in (S1) can be performed by the acquisition unit 231 of the base station 20, the acquisition unit 331 of the terminal device 30, or the acquisition unit 431 of the information processing device 40. In addition, the processing in (S2) can be performed by the determination unit 232 of the base station 20, the determination unit 332 of the terminal device 30, or the determination unit 432 of the information processing device 40.

[0290] On the other hand, the processing in (S3) is usually performed by the receiving device. However, the processing in (S3) can be performed by the transmitting device. In addition, the processing in (S3) can be performed by both the transmitting device and the receiving device. It should be noted that the processing in (S3) can be performed by the communication control unit 233 of the base station 20, or can be performed by the communication control unit 333 of the terminal device 30.

[0291] Information such as a method for acquiring information about a third object, a trigger for starting communication recovery control, and a communication recovery method to be applied can be set in advance in a communication device (e.g., a receiving device). When the communication device is a terminal device 30, this information is preferably set through RRC signaling.

[0292] In cellular communications, the radio resource control function is ideally placed on the network side (e.g., the core network or base station). Therefore, it is desirable that the entity that determines communication recovery control, which is considered a function of radio resource control, is essentially the network-side device (management device 10 or base station 20). On the other hand, from the perspective of reducing the processing delay from momentary interruption to recovery, the entity that makes the determination regarding communication recovery control may be the terminal device 30. Obviously, the entity that determines communication recovery control may be the information processing device 40 (third communication device or third object).

[0293] The following sections list examples of control sequences based on information about a third object. It should be noted that the information about the third object in the following sequence examples typically refers to a change in the relative geographic position between the transmitting or receiving device and the third object. However, the information about the third object is not limited to this. In the following description, the receiving device may be referred to as an Rx node, the transmitting device may be referred to as a Tx node, and the third communication device may be referred to as another Tx node.

[0294] <Control Sequence Example (Basic Mode)>

[0295] First, a control sequence example of the basic mode will be described.

[0296] As control sequence examples of the basic mode, assume (A1) a sequence example in which communication recovery control is implemented by a device that acquires information about a third object and (A2) a sequence example in which communication recovery control is implemented by a device other than the device that acquires information about a third object.

[0297] (A1) Sequence Example of Communication Restoration Control by Device Acquiring Information on Third Object

[0298] In this example, the device that acquires information about the third object implements communication recovery control. Figure 16A is a diagram showing an example of a control sequence according to a basic mode. Figure 16A In the example of FIG, the receiving device performs the following steps: acquiring information about a third object through sensing (S1), making a determination regarding communication recovery control based on the information about the third object (S2), and applying communication recovery control based on the determination (S3). It should be noted that the sending device can also perform the processes in (S1) to (S3).

[0299] In this example, the processing from (S1) to (S3) is completed in one device. Therefore, signaling for communication resumption control from another device is unnecessary.

[0300] (A2) Sequence Example of Communication Restoration Control by a Device Other than a Device Acquiring Information on a Third Object

[0301] In this example, the communication restoration control is performed by a device other than the device that acquires the information on the third object. Figure 16B is a diagram showing another example of a control sequence according to the basic mode. Figure 16BIn the example of FIG, the transmitting device performs the steps of acquiring information about a third object through sensing (S1) and making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the receiving device performs the step of applying communication recovery control based on the determination of the transmitting device (S3). It should be noted that the receiving device may perform the processes in (S1) and (S2), and the receiving device may perform the process in (S3).

[0302] In this example, signaling related to the determined communication recovery control is required. For example, information for applying the communication recovery control (hereinafter referred to as configuration information) must be sent from a device that determines the communication recovery control (e.g., a transmitting device) to a device that performs the communication recovery control (e.g., a receiving device). When the transmitting device is a base station 20 and the receiving device is a terminal device 30, the configuration information is sent, for example, via a downlink. For example, the configuration information is sent via RRC signaling, MAC CE, and / or downlink control information (DCI). When both the transmitting device and the receiving device are terminal devices 30, the configuration information is sent, for example, via a sidelink. For example, the configuration information is sent via sidelink RRC signaling and / or sidelink control information (SCI).

[0303] <Control Sequence Example (First Application)>

[0304] Next, a control sequence example according to the first application will be described.

[0305] In the first application, the receiving device makes a determination regarding communication restoration control. As an example of a control sequence according to the first application, the following (B1) to (B3) are assumed. In the first application, the device making the determination regarding communication restoration control is a different device from the device acquiring information about the third object through sensing. Furthermore, in the first application, the device making the determination regarding communication restoration control is the same device as the device to which communication restoration control is applied.

[0306] (B1) Example of a sequence in which a transmitting device acquires information about a third object

[0307] Figure 17A is a diagram showing an example of a control sequence according to the first application. Figure 17A In the example of FIG. 1 , a transmitting device performs a step (S1) of acquiring information about a third object through sensing. Subsequently, the transmitting device transmits the information about the third object to a receiving device. The receiving device performs a step (S2) of making a determination regarding communication restoration control based on the information about the third object and a step (S3) of applying communication restoration control based on the determination.

[0308] In this example, information about the third object must be transmitted from the transmitting device to the receiving device. When the transmitting device is a terminal device 30 and the receiving device is a base station 20, the information about the third object is transmitted, for example, via an uplink. For example, the information about the third object is transmitted in a measurement report, MAC CE, and / or uplink control information (UCI) at the RRC layer. When both the transmitting device and the receiving device are terminal devices 30, the information about the third object is transmitted, for example, via a sidelink. For example, the information about the third object is transmitted via sidelink RRC signaling and / or SCI.

[0309] (B2) Example of a sequence in which a third object acquires information about a third object

[0310] Figure 17B is a diagram showing another example of a control sequence according to the first application. Figure 17B In the example of , the third object is a device with communication function. Figure 17B In the example of FIG. 1 , a third object performs a step of acquiring information about the third object through sensing (S1). Subsequently, the third object transmits the information about the third object to a receiving device. The receiving device performs a step of making a determination regarding communication restoration control based on the information about the third object (S2) and a step of applying communication restoration control based on the determination (S3).

[0311] In this example, information about a third object must be transmitted from the third object to a receiving device. When the receiving device is base station 20 and the third object is a device communicating with base station 20, the information about the third object is transmitted, for example, via an uplink. When the receiving device is terminal device 30 and the third object is a device communicating with terminal device 30, the information about the third object is transmitted, for example, via a sidelink. It should be noted that the radio access technology (RAT) used by the third object to transmit information about the third object is not limited to cellular communication. For example, the third object can use another RAT (e.g., Wi-Fi or Bluetooth) to transmit information about the third object.

[0312] In this example, the third object itself acquires information about the third object through sensing. Therefore, the receiving device can determine the communication restoration control based on the highly accurate information about the third object.

[0313] (B3) Example of a sequence in which the third communication device acquires information about the third object

[0314] Figure 17C is a diagram showing another example of a control sequence according to the first application. Figure 17CIn the example of FIG. 1 , a third communication device acquires information about a third object through sensing ( S1 ). Subsequently, the third communication device transmits the information about the third object to a receiving device. The receiving device determines communication recovery control based on the information about the third object ( S2 ) and applies communication recovery control based on the determination ( S3 ).

[0315] In this example, information about the third object must be sent from the third communication device to the receiving device. When the receiving device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, via a predetermined interface (e.g., an Xn interface or an NG interface). When the receiving device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, via a downlink. When the receiving device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, via a sidelink. It should be noted that the radio access technology (RAT) used by the third communication device to send information about the third object is not limited to cellular communication. For example, the third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send information about the third object.

[0316] <Control Sequence Example (Second Application)>

[0317] Next, a control sequence example according to the second application will be described.

[0318] In the second application, the sending device makes a determination regarding communication recovery control. As an example of a control sequence according to the second application, assume the following (C1) to (C4). In the second application, the device that determines communication recovery control is different from the device to which the communication recovery control is applied.

[0319] (C1) Example of a sequence in which a receiving device acquires information about a third object

[0320] Figure 18A is a diagram showing an example of a control sequence according to the second application. Figure 18A In an example, a receiving device performs a step (S1) of acquiring information about a third object through sensing. Subsequently, the receiving device transmits the information about the third object to a transmitting device. The transmitting device performs a step (S2) of making a determination regarding communication recovery control based on the information about the third object. Subsequently, the transmitting device transmits information regarding the determination to the receiving device. The receiving device performs a step (S3) of applying communication recovery control based on the determination of the transmitting device.

[0321] In this example, information about the third object must be transmitted from the receiving device to the transmitting device. When the receiving device is a terminal device 30 and the transmitting device is a base station 20, the information about the third object is transmitted via an uplink. When both the transmitting and receiving devices are terminal devices 30, the information about the third object is transmitted, for example, via a sidelink.

[0322] In this example, information for applying communication recovery control (hereinafter referred to as configuration information) must be transmitted from the transmitting device to the receiving device. When the transmitting device is base station 20 and the receiving device is terminal device 30, the configuration information is transmitted, for example, via a downlink. When both the transmitting device and the receiving device are terminal devices 30, the configuration information is transmitted, for example, via a sidelink.

[0323] (C2) Example of a sequence in which a third object obtains information about a third object

[0324] Figure 18B is a diagram showing another example of a control sequence according to the second application. Figure 18B In the example of , the third object is a device with communication function. Figure 18B In the example of FIG. 1 , a third object performs a step of acquiring information about the third object through sensing (S1). Subsequently, the third object transmits the information about the third object to a transmitting device. The transmitting device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the transmitting device transmits information regarding the determination to a receiving device. The receiving device performs a step of applying communication recovery control based on the determination of the transmitting device (S3).

[0325] In this example, information about the third object must be transmitted from the third object to the transmitting device. When the transmitting device is base station 20 and the third object is a device communicating with base station 20, the information about the third object is transmitted, for example, via an uplink. When the transmitting device is terminal device 30 and the third object is a device communicating with terminal device 30, the information about the third object is transmitted, for example, via a sidelink. It should be noted that the RAT used by the third object to transmit information about the third object is not limited to cellular communication. The third object can also use another RAT (such as Wi-Fi or Bluetooth) to transmit information about the third object.

[0326] Furthermore, in this example, configuration information must be sent from the sending device to the receiving device. The configuration information is sent in a manner similar to the sequence example (C1) described above.

[0327] In this example, the third object itself acquires information about the third object through sensing. Therefore, the transmitting device can determine the communication restoration control based on the highly accurate information about the third object.

[0328] (C3) Example of a sequence in which the third communication device acquires information about the third object

[0329] Figure 18C is a diagram showing another example of a control sequence according to the second application. Figure 18C In the example of FIG, a third communication device performs a step of acquiring information about a third object through sensing (S1). Subsequently, the third communication device transmits the information about the third object to a transmitting device. The transmitting device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the transmitting device transmits information regarding the determination to a receiving device. The receiving device performs a step of applying communication recovery control based on the determination of the transmitting device (S3).

[0330] In this example, information about the third object must be sent from the third communication device to the transmitting device. When the transmitting device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the transmitting device is a base station 20 and the third communication device is a terminal device 30, the information about the third object is sent, for example, through an uplink. When the transmitting device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, through a downlink. When the transmitting device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, through a sidelink. It should be noted that the RAT used by the third communication device to send information about the third object is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send information about the third object.

[0331] Furthermore, in this example, configuration information must be sent from the sending device to the receiving device. The configuration information is sent in a manner similar to the sequence example (C1) described above.

[0332] (C4) Example of a sequence in which a transmitting device (or a third communication device) acquires information about a third object

[0333] Figure 18D is a diagram showing another example of a control sequence according to the second application. Figure 18DIn the example of FIG. 1 , a transmitting device (or a third communication device) performs a step (S1) of acquiring information about a third object through sensing and a step (S2) of making a determination regarding communication recovery control based on the information about the third object. Subsequently, the transmitting device (or the third communication device) transmits information regarding the determination to a receiving device via the third communication device (or the transmitting device). The receiving device performs a step (S3) of applying communication recovery control based on the determination of the transmitting device (or the third communication device).

[0334] In this example, information for applying communication recovery control (hereinafter referred to as configuration information) must be transmitted from the transmitting device to the receiving device. When the transmitting device is a base station 20 (e.g., a donor base station), the third communication device is a relay station (e.g., an IAB node), and the receiving device is a terminal device 30, the configuration information is transmitted, for example, via a backhaul link and a downlink (downlink of an access link). When the transmitting device, the third communication device, and the receiving device are all terminal devices 30, the configuration information is transmitted, for example, via a sidelink.

[0335] <Control Sequence Example (Third Application)>

[0336] Next, a control sequence example of the third application will be described.

[0337] In the third application, a third communication device or a third object makes a determination regarding communication restoration control. As an example of a control sequence according to the third application, the following (D1) to (D5) are assumed. In the third application, the device making the determination regarding communication restoration control is different from the device to which the communication restoration control is applied.

[0338] (D1) Example of a sequence in which a sending device obtains information about a third object

[0339] Figure 19A is a diagram showing an example of a control sequence according to the third application. Figure 19A In the example of FIG, a transmitting device performs a step of acquiring information about a third object through sensing (S1). Subsequently, the transmitting device transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits information regarding the determination to a receiving device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device (S3).

[0340] In this example, information about the third object must be sent from the transmitting device to the third communication device. When the transmitting device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the transmitting device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, through an uplink. When the transmitting device is a base station 20 and the third communication device is a terminal device 30, the information about the third object is sent, for example, through a downlink. When the transmitting device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, through a sidelink. It should be noted that the RAT used by the transmitting device to send information about the third object is not limited to cellular communication. The transmitting device can use another RAT (such as Wi-Fi or Bluetooth) to send information about the third object.

[0341] In this example, information for applying communication recovery control (hereinafter referred to as configuration information) must be sent from the third communication device to the receiving device. When the receiving device is a base station 20 and the third communication device is another base station 20, the configuration information is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the receiving device is a base station 20 and the third communication device is a terminal device 30, the configuration information is sent, for example, through an uplink. When the receiving device is a terminal device 30 and the third communication device is a base station 20, the configuration information is sent, for example, through a downlink. When the receiving device is a terminal device 30 and the third communication device is another terminal device 30, the configuration information is sent, for example, through a side link. It should be noted that the RAT used by the third communication device to send the configuration information is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send the configuration information.

[0342] It should be noted that Figure 19A The third communication device shown in the example of may be replaced with a third object. In other words, the third object may make a determination regarding communication resumption control based on the information regarding the third object received from the receiving device.

[0343] (D2) Example of a sequence in which a receiving device acquires information about a third object

[0344] Figure 19B is a diagram showing another example of a control sequence according to the third application. Figure 19BIn the example of FIG. 1 , a receiving device performs a step of acquiring information about a third object through sensing (S1). Subsequently, the receiving device transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits information regarding the determination to the receiving device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device (S3).

[0345] In this example, information about the third object must be sent from the receiving device to the third communication device. When the receiving device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the receiving device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, through an uplink. When the receiving device is a base station 20 and the third communication device is a terminal device 30, the information about the third object is sent, for example, through a downlink. When the receiving device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, through a sidelink. It should be noted that the RAT used by the receiving device to send information about the third object is not limited to cellular communication. The receiving device can use another RAT (such as Wi-Fi or Bluetooth) to send information about the third object.

[0346] In this example, information for applying communication recovery control (hereinafter referred to as configuration information) must be sent from the third communication device to the receiving device. When the receiving device is a base station 20 and the third communication device is another base station 20, the configuration information is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the receiving device is a base station 20 and the third communication device is a terminal device 30, the configuration information is sent, for example, through an uplink. When the receiving device is a terminal device 30 and the third communication device is a base station 20, the configuration information is sent, for example, through a downlink. When the receiving device is a terminal device 30 and the third communication device is another terminal device 30, the configuration information is sent, for example, through a side link. It should be noted that the RAT used by the third communication device to send the configuration information is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send the configuration information.

[0347] It should be noted that Figure 19B The third communication device shown in the example of may be replaced with a third object. In other words, the third object may make a determination regarding communication resumption control based on the information regarding the third object received from the transmitting device.

[0348] (D3) Example of a sequence in which the third communication device acquires information about the third object

[0349] Figure 19C is a diagram showing another example of a control sequence according to the third application. Figure 19C In the example of FIG. 1 , a third communication device performs a step (S1) of acquiring information about a third object through sensing and a step (S2) of making a determination regarding communication restoration control based on the information about the third object. Subsequently, the third communication device transmits information regarding the determination to a receiving device. The receiving device performs a step (S3) of applying communication restoration control based on the determination of the third communication device.

[0350] In this example, configuration information must be sent from the third communication device to the receiving device. The configuration information is sent in a manner similar to the sequence example (D2) described above.

[0351] (D4) Example of a sequence in which a third object acquires information about a third object

[0352] Figure 19D is a diagram showing another example of a control sequence according to the third application. Figure 19D In the example of FIG. 1 , a third object performs a step (S1) of acquiring information about the third object through sensing and a step (S2) of making a determination regarding communication restoration control based on the information about the third object. The third object then transmits information regarding the determination to a receiving device. The receiving device performs a step (S3) of applying communication restoration control based on the determination of the third object.

[0353] In this example, configuration information must be transmitted from the third object to the receiving device. When the receiving device is base station 20 and the third object is a device communicating with base station 20, the configuration information is transmitted, for example, via an uplink. When the receiving device is terminal device 30 and the third object is a device communicating with terminal device 30, the configuration information is transmitted, for example, via a sidelink. It should be noted that the RAT used by the third object to transmit configuration information is not limited to cellular communication. The third object can also use another RAT (such as Wi-Fi or Bluetooth) to transmit information about the third object.

[0354] In this example, the third object itself acquires information about the third object through sensing. Therefore, the third object can determine communication restoration control based on highly accurate information about the third object.

[0355] (D5) Example of a sequence in which a third object acquires information about a third object

[0356] Figure 19E is a diagram showing another example of a control sequence according to the third application. Figure 19EIn the example of FIG. 1 , a third object performs a step of acquiring information about the third object through sensing (S1). Subsequently, the third object transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits information regarding the determination to a receiving device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device (S3).

[0357] In this example, information about a third object must be transmitted from the third object to a third communication device. When the third communication device is base station 20 and the third object is a device communicating with base station 20, the information about the third object is transmitted, for example, via an uplink. When the third communication device is terminal device 30 and the third object is a device communicating with terminal device 30, the information about the third object is transmitted, for example, via a sidelink. It should be noted that the RAT used by the third object to transmit information about the third object is not limited to cellular communication. The third object can also transmit information about the third object using another RAT, such as Wi-Fi or Bluetooth.

[0358] In this example, configuration information must be sent from the third communication device to the receiving device. The configuration information is sent in a manner similar to the sequence example (D2) described above.

[0359] In this example, the third object itself acquires information about the third object through sensing. Therefore, the third communication device can determine the communication restoration control based on highly accurate information about the third object.

[0360] It should be noted that Figure 19E The third communication device and the third object shown in the example of are interchangeable. In other words, the third object can make a determination regarding communication resumption control based on information about the third object received from the third communication device.

[0361] <Control Sequence Example (Fourth Application)>

[0362] Next, a control sequence example according to the fourth application will be described.

[0363] In the fourth application, a third communication device or object makes a determination regarding communication restoration control. Subsequently, the third communication device or object causes the receiving device to execute communication restoration control via the transmitting device. Accordingly, even when the third communication device or object is unable to communicate directly with the receiving device, the receiving device can be caused to execute communication restoration control.

[0364] In the fourth application, a transmitting device transmits signaling for setting communication recovery control. In this case, the transmitting device can reconfigure the communication recovery control. For example, the transmitting device receives signaling for setting communication recovery control from a third communication device. Subsequently, the transmitting device can further reconfigure the communication recovery control based on radio quality. Alternatively, the reconfiguration function can be disabled. In other words, a transmitting device with its reconfiguration function disabled can provide the receiving device with the same information as signaling for setting communication recovery control from another device.

[0365] As an example of the control sequence according to the third application, assume the following (D1) to (D5): In the third application, the device that makes the determination regarding the communication resumption control and the device to which the communication resumption control is applied are different devices.

[0366] (E1) Example of a sequence in which the third communication device acquires information about the third object

[0367] Figure 20A : is a diagram showing an example of a control sequence according to the fourth application. Figure 20A In an example, a third communication device performs a step (S1) of acquiring information about a third object through sensing and a step (S2) of making a determination regarding communication recovery control based on the information about the third object. Subsequently, the third communication device transmits information regarding the determination to a receiving device via a transmitting device. The transmitting device may make a determination regarding communication recovery control based on the information received from the third communication device. The receiving device performs a step (S3) of applying communication recovery control based on the determination of the third communication device or the transmitting device.

[0368] In this example, information for causing the receiving device to apply communication recovery control (hereinafter referred to as configuration information) must be sent from the third communication device to the transmitting device. When the transmitting device is a base station 20 and the third communication device is another base station 20, the configuration information is sent, for example, via a predetermined interface (for example, an Xn interface or an NG interface). When the transmitting device is a base station 20 and the third communication device is a terminal device 30, the configuration information is sent, for example, via an uplink. When the transmitting device is a terminal device 30 and the third communication device is a base station 20, the configuration information is sent, for example, via a downlink. When the transmitting device is a terminal device 30 and the third communication device is another terminal device 30, the configuration information is sent, for example, via a side link. It should be noted that the RAT used by the third communication device to send the configuration information is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send the configuration information.

[0369] Furthermore, in this example, configuration information must be transmitted from the transmitting device to the receiving device. When the transmitting device is a base station 20 (e.g., a donor base station), the third communication device is a relay station (e.g., an IAB node), and the receiving device is a terminal device 30, the configuration information is transmitted, for example, via a backhaul link and a downlink (downlink of an access link). When the transmitting device, the third communication device, and the receiving device are all terminal devices 30, the configuration information is transmitted, for example, via a sidelink.

[0370] (E2) Example of a sequence in which a third object acquires information about a third object

[0371] Figure 20B is a diagram showing another example of a control sequence according to the fourth application. Figure 20B In the example of FIG. 1 , a third object performs a step (S1) of acquiring information about the third object through sensing and a step (S2) of making a determination regarding communication restoration control based on the information about the third object. Subsequently, the third object transmits information regarding the determination to a receiving device via a transmitting device. The transmitting device can also make a determination regarding communication restoration control based on the information received from the third object. The receiving device performs a step (S3) of applying communication restoration control based on the determination of the third object or the transmitting device.

[0372] In this example, configuration information must be transmitted from the third object to the transmitting device. When the transmitting device is base station 20 and the third object is a device communicating with base station 20, the configuration information is transmitted, for example, via an uplink. When the transmitting device is terminal device 30 and the third object is a device communicating with terminal device 30, the configuration information is transmitted, for example, via a sidelink. It should be noted that the RAT used by the third object to transmit configuration information is not limited to cellular communication. The third object can also transmit configuration information using another RAT, such as Wi-Fi or Bluetooth.

[0373] Furthermore, in this example, configuration information must be sent from the transmitting device to the receiving device. The configuration information is sent from the transmitting device to the receiving device in a manner similar to the sequence example (E1) described above.

[0374] In this example, the third object itself acquires information about the third object through sensing. Therefore, the third object or the transmitting device can determine the communication restoration control based on the highly accurate information about the third object.

[0375] (E3) Example of a sequence in which a third object acquires information about a third object

[0376] Figure 20C is a diagram showing another example of a control sequence according to the fourth application. Figure 20CIn the example of FIG, a third object performs a step of acquiring information about the third object by sensing (S1). Subsequently, the third object transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits the information regarding the determination to a receiving device via a transmitting device. The transmitting device can also make a determination regarding communication recovery control based on the information received from the third communication device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device or the transmitting device (S3).

[0377] In this example, information about the third object must be transmitted from the third object to the third communication device. When the third communication device is base station 20 and the third object is a device communicating with base station 20, the information about the third object is transmitted, for example, via an uplink. When the third communication device is terminal device 30 and the third object is a device communicating with terminal device 30, the information about the third object is transmitted, for example, via a sidelink. It should be noted that the RAT used by the third object to transmit configuration information is not limited to cellular communication. The third object can also transmit configuration information using another RAT, such as Wi-Fi or Bluetooth.

[0378] In this example, configuration information must be sent from the third communication device to the transmitting device. The configuration information is sent from the third communication device to the transmitting device in a manner similar to the sequence example (E1) described above.

[0379] Furthermore, in this example, configuration information must be sent from the transmitting device to the receiving device. The configuration information is sent from the transmitting device to the receiving device in a manner similar to the sequence example (E1) described above.

[0380] In this example, the third object itself acquires information about the third object through sensing. Therefore, the third communication device or the transmitting apparatus can determine the communication restoration control based on the highly accurate information about the third object.

[0381] It should be noted that Figure 20C The third communication device and the third object shown in the example of are interchangeable. In other words, the third object can make a determination regarding communication resumption control based on information about the third object received from the third communication device.

[0382] (E4) Example of a sequence in which a transmitting device acquires information about a third object

[0383] Figure 20D is a diagram showing another example of a control sequence according to the fourth application. Figure 20DIn the example of , the transmitting device performs a step of acquiring information about a third object by sensing (S1). Subsequently, the transmitting device transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits the information regarding the determination to the receiving device via the transmitting device. The transmitting device can also make a determination regarding communication recovery control based on the information received from the third communication device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device or the transmitting device (S3).

[0384] In this example, information about the third object must be sent from the third communication device to the transmitting device. When the transmitting device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the transmitting device is a base station 20 and the third communication device is a terminal device 30, the information about the third object is sent, for example, through an uplink. When the transmitting device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, through a downlink. When the transmitting device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, through a sidelink. It should be noted that the RAT used by the third communication device to send configuration information is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send configuration information.

[0385] In this example, configuration information must be sent from the third communication device to the transmitting device. The configuration information is sent from the third communication device to the transmitting device in a manner similar to the sequence example (E1) described above.

[0386] Furthermore, in this example, configuration information must be sent from the transmitting device to the receiving device. The configuration information is sent from the transmitting device to the receiving device in a manner similar to the sequence example (E1) described above.

[0387] It should be noted that Figure 20D The third communication device and the third object shown in the example of are interchangeable. In other words, the third object can make a determination regarding communication resumption control based on the information about the third object received from the transmitting device.

[0388] (E5) Example of a sequence in which a receiving device acquires information about a third object

[0389] Figure 20E is a diagram showing another example of a control sequence according to the fourth application. Figure 20EIn the example of , the receiving device performs a step of acquiring information about a third object by sensing (S1). Subsequently, the receiving device transmits the information about the third object to a third communication device. The third communication device performs a step of making a determination regarding communication recovery control based on the information about the third object (S2). Subsequently, the third communication device transmits information regarding the determination to the receiving device via the transmitting device. The receiving device can also make a determination regarding communication recovery control based on the information received from the third communication device. The receiving device performs a step of applying communication recovery control based on the determination of the third communication device or the receiving device (S3).

[0390] In this example, information about the third object must be sent from the third communication device to the receiving device. When the receiving device is a base station 20 and the third communication device is another base station 20, the information about the third object is sent, for example, through a predetermined interface (for example, an Xn interface or an NG interface). When the receiving device is a base station 20 and the third communication device is a terminal device 30, the information about the third object is sent, for example, through an uplink. When the receiving device is a terminal device 30 and the third communication device is a base station 20, the information about the third object is sent, for example, through a downlink. When the receiving device is a terminal device 30 and the third communication device is another terminal device 30, the information about the third object is sent, for example, through a sidelink. It should be noted that the RAT used by the third communication device to send configuration information is not limited to cellular communication. The third communication device can use another RAT (such as Wi-Fi or Bluetooth) to send configuration information.

[0391] In this example, configuration information must be sent from the third communication device to the transmitting device. The configuration information is sent from the third communication device to the transmitting device in a manner similar to the sequence example (E1) described above.

[0392] Furthermore, in this example, configuration information must be sent from the transmitting device to the receiving device. The configuration information is sent from the transmitting device to the receiving device in a manner similar to the sequence example (E1) described above.

[0393] It should be noted that Figure 20E The third communication device and the third object shown in the example of are interchangeable. In other words, the third object can make a determination regarding communication resumption control based on the information about the third object received from the receiving device.

[0394] <Trigger event based on third-party object information>

[0395] As described above, communication recovery control is performed by the communication control unit of at least one of the transmitting device and the receiving device (e.g., the communication control unit 233 and / or the communication control unit 333). An event for causing the communication control unit to perform communication recovery control can be triggered at a timing when a predetermined condition (hereinafter also referred to as a trigger condition) is met. For example, a communication device (a transmitting device, a receiving device, a third communication device, or a third object) can make a determination at a predetermined timing that causes the communication control unit to perform recovery control. As a result, it is possible to achieve highly accurate communication recovery control while reducing additional processing of the communication device. As an example of the timing at which an event is triggered, assume the following examples 1 to 7.

[0396] -Example 1

[0397] The event may be triggered when a third object enters or leaves a predetermined area. For example, the communication device may determine that the communication control unit executes recovery control when the third object enters or leaves the predetermined area, as determined based on at least one of the location information of the transmitting device and the location information of the receiving device.

[0398] At this time, the information about the third object acquired through sensing may include position information of the third object.

[0399] The predetermined area may also be a block calculated from a geographic distance. Alternatively, the distance may be the distance from a predetermined location. Examples of the predetermined location include a communication device configuring a communication link, a midpoint of the communication link, or a minimum relative distance from the communication link.

[0400] The communication device can trigger an event when a portion of the third object enters or leaves a predetermined area. Furthermore, the communication device can trigger an event when a portion of the third object enters or leaves the predetermined area. For example, the communication device can trigger an event when a predetermined percentage of the third object enters or leaves the predetermined area. In this case, the predetermined percentage can be a preset value or a parameter set between 0% and 100%. The communication device can also trigger an event when the center portion of the third object enters or leaves the predetermined area. In this case, the center portion of the third object can be defined by a predetermined definition or can be determined by the implementation of the sensor.

[0401] It should be noted that the communication device may maintain information about the size of the object defined as an offset.

[0402] Furthermore, the communication device can change the size of the predetermined area based on the movement speed of the third object. For example, the communication device can set the size of the predetermined area to a first size when the movement speed of the third object is faster than a predetermined speed, and can set the size of the predetermined area to a second size when the movement speed of the third object is slower than the predetermined speed. It should be noted that multiple predetermined areas can be defined. For example, multiple areas of different sizes can be defined as predetermined areas. The communication device can then switch the area to be applied to the trigger event based on the movement speed of the third object.

[0403] -Example 2

[0404] The event may be triggered when a third object approaches or moves a specific distance from a predetermined position. For example, the communication device may determine that the communication control unit executes recovery control when a relationship between the predetermined position and the position of the third object satisfies a predetermined criterion, where the predetermined position is determined based on at least the position information of the transmitting device or the position information of the receiving device.

[0405] At this time, the information about the third object acquired through sensing may include position information of the third object.

[0406] The communication device may trigger an event when the relative distance between the predetermined position and the third object approaches / moves a specific distance.

[0407] -Example 3

[0408] The event may be triggered based on a change in line of sight (LOS) / out of line of sight (NLOS). For example, the communication device may determine that the communication control unit performs recovery control when the change in LOS / NLOS satisfies a predetermined criterion.

[0409] In this case, the information about the third object acquired through sensing may include the location information of the transmitting device and the third object. Furthermore, the information about the third object may include the location information of the receiving device and the third object. Furthermore, the information about the third object may include propagation path information of the receiving device or the transmitting device.

[0410] For example, assuming that the communication device that triggered the event is a receiving device or a transmitting device, the communication device can determine LOS / NLOS based on visual information. For example, if the communication device as a communication link partner can be confirmed by a sensor (e.g., a camera), the communication device can determine LOS, and if the communication device as a communication link partner cannot be confirmed by the sensor, the communication device can determine NLOS.

[0411] Furthermore, assuming that the communication device that triggers the event is a receiving device, the communication device can determine LOS / NLOS based on the multipath or delay profile. For example, the communication device can determine LOS when the number of strong multipaths meeting a predetermined criterion is less than a predetermined threshold, and determine NLOS when the number of strong multipaths meeting a predetermined criterion is less than a predetermined threshold. Furthermore, the communication device can determine LOS when a strong path meeting the predetermined criterion is received from the direction of the transmitting device (e.g., when the angle of arrival (AoA) / perpendicular angle of arrival (ZoA) of the strong path is in the direction of the transmitting device), and determine NLOS when a strong path is received from a direction other than the direction of the transmitting device (when the AoA / ZoA of the strong path is outside the direction of the transmitting device).

[0412] Subsequently, the communication apparatus may trigger an event at a timing when the communication environment between the receiving device and the transmitting device changes from LOS to NLOS or at a timing when the communication environment changes from NLOS to LOS.

[0413] -Example 4

[0414] The event may be triggered when the position of the third object moves a predetermined distance or more. For example, the communication device may periodically measure the position of the third object and trigger the event when the difference from the previous position becomes greater than a predetermined distance. For example, the communication device may determine that the communication control unit executes recovery control when the difference from the previous position becomes greater than the predetermined distance.

[0415] -Example 5

[0416] The event can be triggered when the movement speed of the third object changes by a predetermined amount or more. For example, the communication device can determine that the communication control unit will execute recovery control when the change in the movement speed of the third object meets a predetermined criterion. In this case, the movement speed of the third object can be a relative movement speed relative to the receiving device or the transmitting device.

[0417] When the third object is moving slowly, conventional radio link monitoring (RLM) or beam quality measurement may be sufficient to track the third object. However, when the third object is moving at a high speed, tracking the third object using RLM may not be possible. Therefore, triggering based on sensor information is desirable.

[0418] -Example 6

[0419] The event can be triggered when the state of the third object changes. For example, the communication device can determine that the communication control unit will execute recovery control when the state change of the third object meets predetermined criteria. For example, the communication device can trigger the event when the orientation (movement direction) of the third object changes to meet predetermined criteria. Furthermore, the communication device can trigger the event when the size of the third object changes to meet predetermined criteria.

[0420] -other

[0421] To average prediction deviations, the communication device can trigger an event when a trigger condition is met a predetermined number of times. For example, the communication device determines that an event has been met only if the trigger condition is met a predetermined number of times consecutively at a specific time interval; otherwise, the communication device determines that the event has been met. The predetermined number of times can be a preset number or a number set by an RRC parameter.

[0422] <Return due to prediction failure>

[0423] The communication device makes a determination regarding communication recovery control based on a prediction of a decrease in communication quality between the transmitting device and the receiving device due to the influence of the third object. Even when the event is triggered (e.g., even when the communication recovery control is executed), when the communication quality of the communication link before the handover has not decreased, or when the communication quality of the communication link after the handover has not improved compared to before the handover, the communication device may still determine that the prediction of the decrease in communication quality has failed.

[0424] For example, assume that communication recovery control involves switching the communication link between a receiving device and a transmitting device. Even after the switching, the communication device continues to measure the communication quality of the link before the switching for a predetermined time (timer). As a result of this measurement, if the communication quality of the communication link before the switching changes (decreases), the communication device determines that the prediction is successful. If the communication quality of the communication link before the switching does not change, the communication device determines that the prediction is unsuccessful.

[0425] When it is determined that the prediction is successful, the communication device then stops measuring the communication quality of the link before the handover.

[0426] On the other hand, when the prediction is determined to have failed, the communication device makes a determination regarding a fallback operation. For example, when the prediction is determined to have failed, the communication device determines to switch the communication link to the communication link before the handover. When the prediction is determined to have failed, the communication device determines to switch the communication link to a preset communication link (default communication link).

[0427] It should be noted that the measurement for fallback and the determination of the fallback operation can be performed by the communication device that performs communication recovery control, or can be performed by a communication device other than the communication device that performs communication recovery control. For example, a communication device other than the communication device that performs communication recovery control determines whether the prediction has failed. When it is determined that the prediction has failed, the fallback operation can be set to the communication device that performs communication recovery control (for example, the base station 20 can be set in the terminal device 30). In other words, the communication device that performs communication recovery control does not necessarily need to determine the fallback operation caused by the prediction failure.

[0428] Backing off allows the communication device to make more accurate determinations regarding communication resumption control.

[0429] <Additional report information to improve forecast accuracy>

[0430] In addition to the information about the third object, the communication device can obtain additional report information for improving the prediction accuracy from another communication device (e.g., a sensing device). The additional report information is information about the sensing of the third object. The additional report information can be sensor reliability information or measurement environment information (sensing environment information). It is obvious that the additional report information can be other types of information. The communication device makes a determination about the communication recovery control based on the information about the third object (e.g., information about the change in the geographical relative position between the transmitting device or the receiving device and the third object) and the additional report information. As a result, the communication device can make a more accurate determination about the communication recovery control.

[0431] -Sensor reliability information

[0432] Sensor reliability information may include sensor capability information. Sensor capability information may include sensor measurement accuracy information. Assuming sensor measurement accuracy information, information about the degree of deviation from a standard measurement value (standard deviation, variance, or tolerance) is provided. Furthermore, sensor capability information may include sensor accuracy capability information. If the sensor is a wireless positioning sensor, the sensor capability information may include information about the accuracy capability of transmitting positioning signals.

[0433] Furthermore, sensor reliability information may include information about the sensor's measurement system. When the sensor is a wireless positioning sensor, the information about the sensor's measurement system may include information about the positioning accuracy of the measured location. Since radio wave propagation time varies depending on the LOS / NLOS environment, LOS / NLOS information is assumed as information about the positioning accuracy of the measured location. Furthermore, since the distance from the transmitting device and positioning accuracy are correlated, information about the distance from the device transmitting the positioning signal and / or the received power is assumed as another piece of information about the positioning accuracy of the measured location. Furthermore, since accuracy improves with a greater number of radio resources, information such as the type of radio resources used for measurement (the frequency band used) and the number of radio resources (the frequency bandwidth or measurement frequency used for measurement) is also assumed as another piece of information about the positioning accuracy of the measured location. Furthermore, since accuracy varies depending on the measurement method, information about the measurement method used (e.g., round-trip time (RTT), angle of arrival (AoA) / angle of departure (AoD), or time difference of arrival (DL / UL-TDOA) as radio positioning methods) is also assumed as another piece of information about the positioning accuracy of the measured location.

[0434] Furthermore, sensor reliability information may include measurement error information. For example, when measurement becomes difficult or impossible due to a sensor failure (operational failure, interference, or interrupted processing), the other communication device may report measurement error information. For example, when an abnormal value (outside the range of possible values) is obtained as a measurement result, the other communication device may report measurement error information.

[0435] Sensor reliability information is used as a parameter in determining communication recovery. For example, when sensor reliability information is received as additional report information and / or when measurement information is received from a sensor with low reliability, that measurement information is excluded or weighted low, and communication recovery is determined. In other words, when measurement information is received from a sensor with high reliability, only that measurement information may be used or weighted high to determine communication recovery.

[0436] -Measure environmental information (sensing environmental information)

[0437] The measurement environment information (sensing environment information) may be information about interference. For example, the information about interference indicates whether the interference is large or small. The measurement environment information may be information about the number of moving objects in the sensing target area. Furthermore, the measurement environment information may be information about the type of object in the sensing target area or information about the shape of the object.

[0438] In addition, the measurement environment information (sensing environment information) may be information about the terrain. The information about the terrain may be information about buildings in the sensing target area. In addition, the information about the terrain may be a map (two-dimensional map or three-dimensional map) of the sensing target area.

[0439] <<Example of Communication Operation Caused by Trigger Event Based on Information Regarding Third Object>>

[0440] An example of a communication operation caused by a triggering event based on information about a third object will be described below.

[0441] <Measurement Information Report>

[0442] The triggering event causes measurement information to be reported. For example, the sensing device reports information about a third object to the communication device as measurement information. The measurement information can be information about the current third object (such as the third object's position) or predicted information about the third object (such as estimated future position information of the third object or information indicating impending obstruction).

[0443] Example of measurement information included in a report

[0444] In the following text, Figure 21 An example of an IE for measurement information when reporting measurement information based on information about a third object is shown. The measurement information of the third object is also included in the IE MeasResults as the IE measResultICS, where the IE MeasResults includes measurement results for intra-frequency, extra-frequency, and inter-RAT mobility. The IE measResultICS for reporting the measurement information of the third object includes the location information of the third object (locationInfoObject), the communication state predicted by the third object (expectedState), and the measurement time (measuredTime). It should be noted that the measurement information of the third object is not limited to the following parameters and may of course include other information described above (measurement accuracy information, etc.).

[0445] <Conditional Handover>

[0446] When a trigger event based on a third object occurs, conditional handover can be implemented. In this case, an event based on information about the third object for triggering the conditional handover is defined.

[0447] Event definition example 1

[0448] An example of an event definition for detecting whether a third object has entered or left a predetermined area will be described later. In this example, the determination is made based on relative distances along each axis of the orthogonal coordinate system. Specifically, when both entry condition 1 and entry condition 2 are met, the third object is considered to have entered the predetermined area, and when either exit condition 1 or exit condition 2 is met, the third object is considered to have left the predetermined area.

[0449] Inequality D1-1 (entry condition 1)

[0450] X_position-X_area+Hys <Thresh1

[0451] Inequality D1-2 (entry condition 2)

[0452] Y_position-Y_area+Hys <Thresh2

[0453] Inequality D1-3 (leaving condition 1)

[0454] X_position-X_area-Hys>Thresh1

[0455] Inequality D1-4 (leaving condition 2)

[0456] Y_position-Y_area-Hys>Thresh2

[0457] Here, X_position represents the coordinate of the third object on the X axis, Y_position represents the coordinate of the third object on the Y axis, X_area represents the coordinate of the predetermined area on the X axis, and Y_area represents the coordinate of the predetermined area on the Y axis.

[0458] It should be noted that the event is defined by two-dimensional coordinates of the X and Y axes, but it goes without saying that the determination of the Z axis (height or altitude) can also be included in the event and the event can be defined by three-dimensional coordinates.

[0459] Event definition example 2

[0460] Another example of an event definition for detecting whether a third object has entered or left a predetermined area will be described later. In this example, the determination is made based on the relative distance between the third object's position and the predetermined area. Specifically, when the entry condition is met, the third object is considered to have entered the predetermined area, and when the exit condition is met, the third object is considered to have left the predetermined area.

[0461] Inequality D1-1 (entry condition)

[0462] |measured_position-reference_position|+Hys <Thresh

[0463] Inequality D1-2 (leaving condition)

[0464] |measured_position-reference_position|-Hys>Thresh

[0465] Here, measured_position represents a vector representing the position of the third object, and reference_position represents a vector representing the coordinates of the predetermined area.

[0466] Example for IE

[0467] Figure 22 An example of an information element (IE) supporting the foregoing event definition examples (event definition example 1 and / or event definition example 2) is shown. Figure 22 An example of changing the IE that sets the trigger event for conditional reconfiguration is shown. Figure 22 In the example, Figure 13A As shown in IE, a portion of the text on the tag is changed.

[0468] In this embodiment, in addition to the traditional events (condEventA3, condEventA5), a new event IE ( Figure 22 condEventD1 and condEventD2 in the example).

[0469] It should be noted that the above events are described as examples of triggering conditional handover, but the events can also be applied to another communication operation using event triggering. As a specific example, the above events can also be applied to measurement information reporting (measurement reporting).

[0470] <Beam Failure Recovery>

[0471] When a trigger event based on a third object occurs, beam failure recovery can be implemented.The operations of the medium access control (MAC) and physical layer (PHY) can be changed as follows.

[0472] Example of MAC change

[0473] In the medium access control (MAC), Figure 23 The procedure shown in implements beam failure detection. Figure 23 An example of a change in the beam failure detection operation is shown. Figure 23 In the procedure shown, Figure 14B In the illustrated procedure, a portion of the text marked is changed.

[0474] Example 1 of changes in physical layer operation

[0475] As an example of a change in physical layer operation, beam failure is detected when the radio link may be blocked in the future. Figure 24 In the state shown, the physical layer notifies higher layers of beam failure cases. Figure 24 An example of a change in the beam failure case reporting operation is shown. Figure 24 In the example shown, Figure 14A In the illustrated report operation, a portion of the mark on the text is changed.

[0476] Example 2 of changes in physical layer operation

[0477] As another example of changing the physical layer operation, based on the location information of the sensor, when the radio link quality may be reduced to the threshold Q out Beam failure is detected when Figure 25 In the state shown, the physical layer notifies higher layers of beam failure cases. Figure 25 An example of a change in the beam failure case reporting operation is shown. Figure 25 In the example, Figure 14A In the illustrated reporting operation, a portion of the text marked therein is changed. Here, the sensor information may be information on a higher layer (eg, an application layer) or measurement information defined in 3GPP TS 38.215.

[0478] <Radio Link Monitoring / Radio Link Failure>

[0479] A radio link failure is determined based on the information about the third object.

[0480] Example of changes in physical layer operation

[0481] As a change example of the physical layer operation, an example of detecting a radio link failure when the radio link is highly likely to be blocked in the future will be described. Figure 26 An example of a change in radio link monitoring operation is shown. Figure 26 In , the part marked on the text is the changed part. Specifically, as in Figure 26 In the state shown in FIG, when the radio link quality is expected to drop to the threshold value Q based on the position of the third object obtained by the sensor, out In addition, when the radio link quality improvement expected based on the position of the third object exceeds the threshold Q in When the physical layer reports synchronization to the higher layers.

[0482] <Random Access Problem>

[0483] When random access is expected to fail based on information about the third object, the terminal device stops sending uplink channels related to random access (Msg1, Msg3, or MsgA), or stops receiving downlink channels related to random access (Msg2, Msg4, or MsgB). In addition, the MAC entity of the terminal device notifies a higher layer of the random access problem. Specifically, based on information about the third object, when uplink channel transmission or downlink channel reception related to random access is likely to fail, the random access problem is notified to the higher layer regardless of the preamble code transmission count (PREAMBLE_TRANSMISSION_COUNTER). By identifying random access problems based on information about the third object, it is possible to reduce channel retransmissions related to unnecessary random access.

[0484] Example 1 of changes in MAC layer operation

[0485] As Example 1 of a change example of the MAC layer operation, in Figure 27 An example of changes related to random access response reception is shown in FIG. Figure 27 The example 1 of the change of the MAC layer operation in the random access procedure is shown. Figure 27 In the example, the portion marked with text is a changed portion. When a random access response is not successfully received due to a third object, a higher layer is notified of a random access problem regardless of the preamble transmission count (PREAMBLE_TRANSMISSION_COUNTER). In this case, it is assumed that the random access procedure was unsuccessful.

[0486] Example 2 of changes in MAC layer operation

[0487] As Example 2 of a change example of the MAC layer operation, in Figure 28 An example of changes related to contention resolution is shown in FIG. Figure 28 Example 2 of the change of the MAC layer operation in the random access procedure is shown. Figure 28 In the example, the portion marked with text is a changed portion. When PDCCH reception is unsuccessful due to a third object, a higher layer is notified of a random access problem regardless of the preamble transmission count (PREAMBLE_TRANSMISSION_COUNTER). In this case, it is assumed that the random access procedure is unsuccessful.

[0488] <Periodic Suspension of Uplink Channel / Signal Transmission>

[0489] Based on information about a third object, the transmission of periodic uplink channels / signals is suspended. Specifically, when the periodic uplink channels / signals may be blocked by the third object, the terminal device suspends the transmission of the periodic uplink channels / signals. The periodic uplink channels / signals include, for example, the PUSCH configured with configured grant, the PUCCH including SR or periodic CSI, and the periodic or semi-periodic SRS.

[0490] <Change of the applied uplink precoder / transmission beam>

[0491] Based on information about a third object, the applied uplink precoder or transmission beam is changed. Specifically, when the uplink channels / signals may be blocked by the third object, the terminal device changes the applied uplink precoder / transmission beam to transmit the uplink channels / signals.

[0492] As an example of a method for changing the applied uplink precoder / transmission beam, a plurality of uplink precoders / transmission beams are pre-configured in the terminal device by RRC. The terminal device makes a selection from the set of multiple uplink precoders / transmission beams based on information about the third object and applies it to the transmission of the uplink channels / signals. As a rule for making a selection from the set of multiple uplink precoders / transmission beams, the uplink precoder / transmission beam can be selected based on the priority order or can be randomly selected.

[0493] As another example of a method for changing the applied uplink precoder / transmission beam, one or more uplink precoders / transmission beams are indicated in the terminal device by DCI. The terminal device selects one from the one or more indicated uplink precoders / transmission beams based on information about the third object and applies it to the uplink channels / signals transmission.

[0494] <Change of CSI value>

[0495] Based on information about a third object, the CSI value to be fed back is changed. As a specific example, when the communication link may be blocked by the third object, the communication device feeds back a CQI index lower than the CQI index to be fed back to the base station. As another specific example, when the communication link may be blocked by the third object, the communication device feeds back a PMI different from the PMI to be fed back to the base station.

[0496] <<Example of application of an additional communication link based on sensor information>>

[0497] The communication operation examples described above are operation examples regarding wireless links used for communication. On the other hand, based on information about a third object, when a communication link that was previously unavailable for communication can be used, the communication device can add the communication link.

[0498] As a method of adding a communication link based on information about the third object, a method similar to the previously described method can be applied.

[0499] As an example of a method of adding a communication link based on information about a third object, when a new communication link is discovered, a measurement report may inform the base station of information about the new communication link.

[0500] As another example of a method of adding a communication link based on information about a third object, when a new communication link is discovered, a RACH may be transmitted to the new communication link.

[0501] As another example of a method of adding a communication link based on information about a third object, when a new communication link is discovered, information of a beam used for the communication link (SSB index, CSI-RS index, SRI, etc.) may be fed back.

[0502] <<Edit>>

[0503] The embodiments described above are by way of example, and various modifications and applications are possible.

[0504] For example, in the control sequence example described above, the receiving device applies (executes) the communication recovery control, but the sending device may also apply (execute) the communication recovery control. In this case, the sending device and the receiving device described in the control sequence example may be interchangeable.

[0505] The control device that controls the management device 10, the base station 20, the terminal device 30, and the information processing device 40 of this embodiment can be implemented by a dedicated computer system or a general-purpose computer system.

[0506] For example, a communication program for performing the operations described above is stored in a computer-readable recording medium such as an optical disc, a semiconductor memory, a magnetic tape, or a flexible disk and distributed. Subsequently, the program is installed on a computer, for example, and the processing described above is performed to configure the control device. Here, the control device may be a device (e.g., a personal computer) external to the management device 10, the base station 20, and the terminal device 30. In addition, the control device may be a device (e.g., a control unit 13, a control unit 23, a control unit 33, and a control unit 43) internal to the management device 10, the base station 20, and the terminal device 30.

[0507] In addition, the aforementioned communication program may be stored in a disk device included in a server on a network such as the Internet, so that the communication program can be downloaded to a computer. In addition, the aforementioned functions may be implemented through the cooperation of an operating system (OS) and application software. In this case, the parts other than the OS may be stored in a medium and distributed, or the parts other than the OS may be stored in a server device and downloaded to a computer.

[0508] Among the various processes described in the preceding embodiments, all or part of the processes described as being automatically implemented may be implemented manually, or all or part of the processes described as being manually implemented may be automatically implemented by known methods. In addition, unless otherwise specified, the processing procedures, specific names, and information including various data and parameters shown in the preceding documents and accompanying drawings may be arbitrarily changed. For example, the various information shown in each accompanying drawing is not limited to the information shown.

[0509] Furthermore, each component of each device shown in the drawings is a functional concept and does not necessarily need to be physically configured as shown in the drawings. In other words, the specific form of distribution and integration of each device is not limited to the form shown, and all or part of it can be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc. It should be noted that this configuration through distribution and integration can be implemented dynamically.

[0510] Furthermore, the embodiments described above may be combined as appropriate within the scope in which the processing contents do not contradict each other. Furthermore, the order of each step shown in the flowcharts of the embodiments described above may be changed as appropriate.

[0511] In addition, for example, the present embodiment can be implemented as any configuration constituting an apparatus or system, such as a processor as a system large-scale integration (LSI), a module using multiple processors, a unit using multiple modules, a collection obtained by further adding other functions to the unit, etc. (that is, a configuration of a part of the device).

[0512] It should be noted that in this embodiment, a system refers to a collection of multiple components (devices, modules (components), etc.), and it does not matter whether all components are in the same housing. Therefore, multiple devices housed in separate housings and connected via a network, and a single device housing multiple modules in a single housing, are both systems.

[0513] Furthermore, for example, the present embodiment may adopt a cloud computing configuration, in which a function is collaboratively shared and processed by multiple devices over a network.

[0514] Conclusion

[0515] As described above, according to an embodiment of the present disclosure, the communication device is any one of a plurality of communication devices including at least a transmitting device (e.g., terminal device 30), a receiving device (e.g., base station 20), and a third communication device (e.g., information processing device 40). Based on information related to a change in the geographic relative position between the transmitting device or the receiving device and a third object (e.g., a truck or a pedestrian), the communication device makes a determination regarding the restoration control of the communication link between the transmitting device and the receiving device. Here, the information related to the change in geographic relative position is information acquired through sensing performed by the transmitting device, the receiving device, the third communication device, or the third object.

[0516] As a result, the communication device can achieve high communication performance. For example, since the communication device can implement recovery control (e.g., communication link switching) before any negative effects on communication (e.g., radio link failure or beam link failure) occur, seamless communication can be achieved.

[0517] Although the embodiments of the present disclosure are described above, the technical scope of the present disclosure is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the present disclosure. In addition, components of different embodiments and modifications can be appropriately combined.

[0518] It should be noted that the effects of each embodiment described in this specification are merely examples and not limitations, and other effects may be provided.

[0519] The present technology may also have the following configurations.

[0520] (1) A communication device, being a communication device among a plurality of communication devices including at least a transmitting device and a receiving device, the communication device comprising:

[0521] a determination unit that makes a determination regarding restoration control of the communication link between the transmitting device and the receiving device based on information related to a change in the geographical relative position between the transmitting device or the receiving device and the third object, wherein

[0522] The information related to the change in the relative geographical position is information acquired through sensing by the transmitting device, the receiving device, another communication apparatus different from the transmitting device and the receiving device, or a third object.

[0523] (2) The communication device according to (1), wherein

[0524] The communication device is one of a transmitting device and a receiving device, and

[0525] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the one of the transmitting device and the receiving device.

[0526] (3) The communication device according to (1), wherein

[0527] The communication device is one of a transmitting device and a receiving device, and

[0528] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the other of the transmitting device and the receiving device.

[0529] (4) The communication device according to (1), wherein

[0530] The communication device is a transmitting device or a receiving device, and

[0531] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the third object or the another communication means.

[0532] (5) The communication device according to (1), wherein

[0533] the plurality of communication devices including the another communication device,

[0534] The communication device is the other communication device, and

[0535] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the transmitting device, the receiving device, or the other communication apparatus.

[0536] (6) The communication device according to (1), wherein

[0537] the plurality of communication devices including the another communication device,

[0538] The communication device is the other communication device, and

[0539] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in the geographical relative position acquired through sensing performed by the third object.

[0540] (7) The communication device according to (1), wherein

[0541] The plurality of communication devices include a third object having a communication function,

[0542] The communication device is a third object having a communication function, and

[0543] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the receiving device, the transmitting device, or the other communication apparatus.

[0544] (8) The communication device according to (1), wherein

[0545] The plurality of communication devices include a third object having a communication function,

[0546] The communication device is a third object having a communication function, and

[0547] The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in the geographical relative position acquired through sensing performed by the third object.

[0548] (9) The communication device according to any one of (1) to (8), wherein

[0549] The information related to the change in geographic relative position is information related to the change in relative position of the third object relative to the position of the sending device or the receiving device, or information related to the change in relative position of the third object relative to a reference position determined by referring to the position of the sending device or the receiving device.

[0550] (10) The communication device according to any one of (1) to (9), wherein

[0551] The restoration control is the switching of the communication link between the receiving device and the sending device, and

[0552] When the communication quality of the communication link after the switching is not improved compared with the communication link before the switching, the determination unit determines to switch the communication link switched to by the recovery control to the communication link before the switching.

[0553] (11) The communication device according to any one of (1) to (9), wherein

[0554] The restoration control is the switching of the communication link between the receiving device and the sending device, and

[0555] Even when the communication link is switched by the restoration control, when the communication quality of the communication link before the switching does not change, the determination unit determines to switch the communication link switched by the restoration control to the communication link before the switching.

[0556] (12) The communication device according to any one of (1) to (11), comprising

[0557] an acquisition unit for acquiring sensing related information of a third object, wherein

[0558] Restoration control of the communication link between the transmitting device and the receiving device is determined based on the information related to the change in the geographical relative position and the sensing related information.

[0559] (13) The communication device according to (12), wherein

[0560] The sensing-related information is reliability information of a sensor that performs sensing or sensed environment information.

[0561] (14) The communication device according to any one of (1) to (13), wherein

[0562] The restoration control is performed by a communication control unit of at least one of the transmitting device and the receiving device, and

[0563] The determination unit makes a determination at a predetermined timing to cause the communication control unit to perform the restoration control.

[0564] (15) The communication device according to (14), wherein

[0565] The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when the third unit enters or leaves a predetermined area determined based on at least the position information of the transmitting device or the position information of the receiving device.

[0566] (16) The communication device according to (14), wherein

[0567] The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when a relationship between a predetermined position determined based on at least the position information of the transmitting device or the receiving device and the position of the third object satisfies a predetermined criterion.

[0568] (17) The communication device according to (14), wherein

[0569] The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing at which a change in the movement speed of the third object satisfies a predetermined criterion.

[0570] (18) The communication device according to (14), wherein

[0571] The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when the state change of the third object satisfies a predetermined criterion.

[0572] (19) The communication device according to any one of (1) to (18), wherein

[0573] The transmitting device is a terminal device or a base station, and

[0574] The receiving device is a terminal device or a base station.

[0575] (20) A communication method performed by any one of a plurality of communication devices including at least a transmitting device, a receiving device, and another communication device different from the transmitting device and the receiving device, the communication method comprising:

[0576] A determination is made regarding resumption control of the communication link between the transmitting device and the receiving device based on information regarding a change in the geographical relative position between the transmitting device or the receiving device and the third object, wherein

[0577] The relevant information about the change in the relative geographical position is information acquired by a sending device, a receiving device, another communication apparatus or a third object through sensing.

[0578] Reference Signs List

[0579] 1. Communication System

[0580] 10 - Manage devices

[0581] 20——Base Station

[0582] 30——Terminal equipment

[0583] 40——Information processing equipment

[0584] 11, 41 - Communication unit

[0585] 21, 31 - Wireless communication unit

[0586] 12, 22, 32, 42 - storage units

[0587] 13, 23, 33, 43 - control units

[0588] 24, 34, 44 - sensor units

[0589] 211, 311 - Sending processing unit

[0590] 212, 312 - Receiving and processing unit

[0591] 213, 313——Antenna

[0592] 231, 331, 431 - Acquisition Unit

[0593] 232, 332, 432——determine the unit

[0594] 233, 333, 433 - Communication control unit

Claims

1. A communication device, being a communication device among a plurality of communication devices including at least a transmitting device and a receiving device, the communication device comprising: a determination unit that makes a determination regarding restoration control of the communication link between the transmitting device and the receiving device based on information related to a change in the geographical relative position between the transmitting device or the receiving device and the third object, wherein The information related to the change in the relative geographical position is information acquired through sensing by the transmitting device, the receiving device, another communication apparatus different from the transmitting device and the receiving device, or a third object.

2. The communication device according to claim 1, wherein The communication device is one of a transmitting device and a receiving device, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the one of the transmitting device and the receiving device.

3. The communication device according to claim 1, wherein The communication device is one of a transmitting device and a receiving device, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the other of the transmitting device and the receiving device. The communication device according to claim 1 , wherein The communication device is a transmitting device or a receiving device, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the third object or the another communication means. The communication device according to claim 1 , wherein the plurality of communication devices including the another communication device, The communication device is the other communication device, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the transmitting device, the receiving device, or the other communication apparatus. The communication device according to claim 1 , wherein the plurality of communication devices including the another communication device, The communication device is the other communication device, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in the geographical relative position acquired through sensing performed by the third object.

7. The communication device according to claim 1, wherein The plurality of communication devices include a third object having a communication function, The communication device is a third object having a communication function, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in geographical relative position acquired through sensing performed by the receiving device, the transmitting device, or the other communication apparatus.

8. The communication device according to claim 1, wherein The plurality of communication devices include a third object having a communication function, The communication device is a third object having a communication function, and The determination unit makes a determination regarding resumption control of the communication link between the transmitting device and the receiving device based on information about the change in the geographical relative position acquired through sensing performed by the third object.

9. The communication device according to claim 1, wherein The information related to the change in geographic relative position is information related to the change in relative position of the third object relative to the position of the sending device or the receiving device, or information related to the change in relative position of the third object relative to a reference position determined by referring to the position of the sending device or the receiving device.

10. The communication device according to claim 1, wherein The restoration control is the switching of the communication link between the receiving device and the sending device, and When the communication quality of the communication link after the switching is not improved compared with the communication link before the switching, the determination unit determines to switch the communication link switched to by the recovery control to the communication link before the switching. The communication device according to claim 1 , wherein The restoration control is the switching of the communication link between the receiving device and the sending device, and Even when the communication link is switched by the restoration control, when the communication quality of the communication link before the switching does not change, the determination unit determines to switch the communication link switched to by the restoration control to the communication link before the switching.

12. The communication device according to claim 1, comprising an acquisition unit for acquiring sensing related information of a third object, wherein Restoration control of the communication link between the transmitting device and the receiving device is determined based on the information related to the change in the geographical relative position and the sensing related information.

13. The communication device according to claim 12, wherein The sensing-related information is reliability information of a sensor that performs sensing or sensed environment information.

14. The communication device according to claim 1, wherein The restoration control is performed by a communication control unit of at least one of the transmitting device and the receiving device, and The determination unit makes a determination at a predetermined timing to cause the communication control unit to perform the restoration control.

15. The communication device according to claim 14, wherein The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when the third unit enters or leaves a predetermined area determined based on at least the position information of the transmitting device or the position information of the receiving device.

16. The communication device according to claim 14, wherein The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when a relationship between a predetermined position determined based on at least the position information of the transmitting device or the receiving device and the position of the third object satisfies a predetermined criterion.

17. The communication device according to claim 14, wherein The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing at which a change in the movement speed of the third object satisfies a predetermined criterion.

18. The communication device according to claim 14, wherein The determination unit makes a determination to cause the communication control unit to perform restoration control at a timing when the state change of the third object satisfies a predetermined criterion.

19. The communication device according to claim 1, wherein The transmitting device is a terminal device or a base station, and The receiving device is a terminal device or a base station.

20. A communication method, performed by any one of a plurality of communication devices including at least a transmitting device and a receiving device, the communication method comprising: A determination is made regarding resumption control of the communication link between the transmitting device and the receiving device based on information regarding a change in the geographical relative position between the transmitting device or the receiving device and the third object, wherein The information related to the change in the relative geographical position is information acquired through sensing performed by a transmitting device, a receiving device, another communication apparatus different from the transmitting device and the receiving device, or a third object.

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