JP-7857131-B2 - Communication device, terminal device, communication system, and communication control method

JP7857131B2JP 7857131 B2JP7857131 B2JP 7857131B2JP-7857131-B2

Inventors

日向崚輝
石倉勝利
山崎敦史
山本誠
新明秀章
國定温子

Assignees

シャープ株式会社

Dates

Publication Date: 20260512
Application Date: 20220325

Claims (20)

A first communication unit that performs communication using the first communication method, A second communication unit that performs communication using a second communication method different from the first communication method, A control unit that controls the first communication unit and the second communication unit, Includes, The state in which the terminal device and the second communication device are communicating using the first communication method without going through a communication device is defined as the first state. When the terminal device and the second communication device are not communicating using the first communication method without going through the communication device , and the first communication unit communicates with the second communication device using the first communication method, and the second communication unit communicates with the terminal device, thereby relaying communication between the terminal device and the second communication device, the second state is defined as: The control unit, A communication device that, when a handover occurs between the first state and the second state, executes control to continue communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover.
A first communication unit that performs communication using the first communication method, A second communication unit that performs communication using a second communication method different from the first communication method, A control unit that controls the first communication unit and the second communication unit, Includes, The state in which the terminal device and the second communication device are communicating using the first communication method without going through a communication device is defined as the first state. When the terminal device and the second communication device are not communicating using the first communication method without going through the communication device, and the first communication unit communicates with the second communication device using the first communication method, and the second communication unit communicates with the terminal device, thereby relaying communication between the terminal device and the second communication device, the second state is defined as: The control unit, When a handover occurs between the first state and the second state, control is executed to perform communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. The control unit, In the first state, information representing the settings for communication between the terminal device and the second communication device using the first communication method is acquired as the connection setting information. A communication device that communicates with the terminal device via the second communication unit and performs the handover from the first state to the second state by communicating with the second communication device via the first communication unit based on the connection setting information.
In claim 1 or 2, The control unit, A communication device that receives the connection setting information from the second communication device via the first communication unit.
In claim 3, The control unit, A communication device that controls the selection of a PDU (Protocol Data Unit) session based on the aforementioned connection setting information.
In claim 1, The control unit, In the second state, information representing the settings for communication between the first communication unit and the second communication device is acquired as the connection setting information. A communication device that performs the handover from the second state to the first state by disconnecting communication between the second communication unit and the terminal device, and requesting the establishment of communication between the terminal device and the second communication device using the first communication method based on the connection setting information.
In claim 5, The control unit, A communication device that obtains information from the terminal device representing the communication quality of the first communication method and the communication quality of the second communication method, and performs the handover from the second state to the first state when it determines that the communication quality of the first communication method is higher than that of the second communication method.
A first communication unit that performs communication using the first communication method, A second communication unit that performs communication using a second communication method different from the first communication method, A control unit that controls the first communication unit and the second communication unit, Includes, The state in which the terminal device and the second communication device are communicating using the first communication method is defined as the first state. When the first communication unit communicates with the second communication device using the first communication method, and the second communication unit communicates with the terminal device, thereby relaying communication between the terminal device and the second communication device, the second state is defined as: The control unit, When a handover occurs between the first state and the second state, control is executed to perform communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. The control unit, In the second state, information representing the settings for communication between the first communication unit and the second communication device is acquired as the connection setting information. The handover from the second state to the first state is performed by disconnecting communication between the second communication unit and the terminal device, and requesting the establishment of communication between the terminal device and the second communication device using the first communication method based on the connection setting information. The control unit, A communication device that requests at least one of the terminal device and the second communication device to establish communication between the terminal device and the second communication device using a PDU (Protocol Data Unit) session corresponding to the connection setting information.
In any one of claims 5 to 7, A communication device that, after instructing the terminal device to perform the handover, disconnects communication between the second communication unit and the terminal device.
In any one of claims 1 to 8, The first communication method is a communication device that is a wireless communication method used in 5GS (5G System).
In claim 9, The aforementioned connection settings information is: A communication device that provides information for determining network slices in the aforementioned 5GS network slicing, or information for determining QoS (Quality of Service).
In any one of claims 1 to 10, The control unit, A communication device that, based on the connection setting information, acquires second connection setting information, which is the setting in the second communication method, and communicates with the terminal device via the second communication unit according to the setting corresponding to the second connection setting information.
In claim 11, The second connection setting information is a communication device that determines the QoS (Quality of Service) or communication bandwidth.
A first terminal communication unit that performs communication using the first communication method, A second terminal communication unit that performs communication using a second communication method different from the first communication method, A terminal control unit that controls the first terminal communication unit and the second terminal communication unit, Includes, The first state is defined as the state in which the second terminal communication unit and the communication device are not communicating, and the first terminal communication unit and the second communication device are communicating. When the first terminal communication unit and the second communication device are not communicating using the first communication method without going through the communication device , and the second terminal communication unit is communicating with the communication device, and the communication device and the second communication device are communicating using the first communication method, and the state in which the communication device relays communication with the second communication device is defined as the second state, The terminal control unit, A terminal device that, when a handover occurs between the first state and the second state, executes control to continue communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover.
In claim 13, The terminal control unit, A terminal device that performs the handover from the second state to the first state by establishing communication between the first terminal communication unit and the second communication device based on the connection setting information representing the settings for communication between the communication device and the second communication device using the first communication method in the second state.
In claim 13, The aforementioned communication device is Based on the connection setting information representing the settings for communication between the first terminal communication unit and the second communication device using the first communication method in the first state, the second communication device communicates with the first communication unit. The terminal control unit, A terminal device that performs the handover from the first state to the second state by establishing communication between the second terminal communication unit and the communication device.
Terminal device and Communication equipment and Includes, The first state is defined as a state in which the aforementioned communication device and the aforementioned terminal device are not communicating, and the aforementioned terminal device and the second communication device are communicating using the first communication method. When the terminal device and the second communication device do not communicate using the first communication method without going through the communication device , and the communication device communicates with the second communication device using the first communication method, and the communication device communicates with the terminal device using the second communication method, and the state in which the communication device relays communication between the terminal device and the second communication device is defined as the second state, The aforementioned communication device is A communication system that, when a handover occurs between the first state and the second state, executes control to continue communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover.
Terminal device and Communication equipment and Includes, The first state is defined as a state in which the aforementioned communication device and the aforementioned terminal device are not communicating, and the aforementioned terminal device and the second communication device are communicating using the first communication method. When the terminal device and the second communication device do not communicate using the first communication method without going through the communication device, and the communication device communicates with the second communication device using the first communication method, and the communication device communicates with the terminal device using the second communication method, and the state in which the communication device relays communication between the terminal device and the second communication device is defined as the second state, The aforementioned communication device is When a handover occurs between the first state and the second state, control is executed to perform communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. The aforementioned communication device is In the first state, information representing the settings for communication between the terminal device and the second communication device using the first communication method is acquired as the connection setting information. A communication system that performs the handover from the first state to the second state by communicating with the terminal device using the second communication method and communicating with the second communication device using the first communication method based on the connection setting information.
Terminal device and Communication equipment and Includes, The first state is defined as a state in which the aforementioned communication device and the aforementioned terminal device are not communicating, and the aforementioned terminal device and the second communication device are communicating using the first communication method. When the communication device communicates with the second communication device using the first communication method, and the communication device communicates with the terminal device using the second communication method, and the state in which the communication device relays communication between the terminal device and the second communication device is defined as the second state, The aforementioned communication device is When a handover occurs between the first state and the second state, control is executed to perform communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. In the second state, information representing the settings for communication between the communication device and the second communication device using the first communication method is acquired as the connection setting information. The handover from the second state to the first state is performed by disconnecting the communication between the communication device and the terminal device using the second communication method, and requesting the establishment of communication between the terminal device and the second communication device using the first communication method based on the connection setting information. A communication system that requires at least one of the terminal device and the second communication device to establish communication between the terminal device and the second communication device using a PDU (Protocol Data Unit) session corresponding to the connection setting information.
The first state is defined as a state in which the communication device and the terminal device are not communicating, and the terminal device and the second communication device are communicating using the first communication method. When the terminal device and the second communication device do not communicate using the first communication method without going through the communication device , and the communication device communicates with the second communication device using the first communication method, and the communication device communicates with the terminal device using the second communication method, and the state in which the communication device relays communication between the terminal device and the second communication device is defined as the second state, When a handover occurs between the first state and the second state, control is executed to continue communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. Communication control method.
The first state is defined as a state in which the communication device and the terminal device are not communicating, and the terminal device and the second communication device are communicating using the first communication method. When the terminal device and the second communication device do not communicate using the first communication method without going through the communication device, and the communication device communicates with the second communication device using the first communication method, and the communication device communicates with the terminal device using the second communication method, and the state in which the communication device relays communication between the terminal device and the second communication device is defined as the second state, When a handover occurs between the first state and the second state, control is executed to perform communication using the first communication method after the handover with the same settings as before the handover, based on connection setting information representing the settings for communication using the first communication method before the handover. The aforementioned communication device In the first state, information representing the settings for communication between the terminal device and the second communication device using the first communication method is acquired as the connection setting information. The handover from the first state to the second state is performed by communicating with the terminal device using the second communication method and communicating with the second communication device using the first communication method based on the connection setting information. Communication control method.

Description

This invention relates to communication devices, terminal devices, communication systems, and communication control methods, etc. Conventional methods for performing handovers in communication systems are known. For example, Patent Document 1 discloses a method for automatically setting the configuration when seamlessly handing over between different communication systems. Furthermore, the 3GPP (3rd Generation Partnership Project) is considering the system architecture of 5G (5GS), a fifth-generation (5G) mobile communication system, and is discussing support for new procedures and functions. Information on 5GS is disclosed, for example, in Non-Patent Document 1. Japanese Patent Publication No. 2005-0864713GPP TS 38.300 V16.4.0 (2020-12); Technical Specification Group Radio Access Network; NR; NR and NG-RAN Overall Description; Stage 2 (Release 16) A diagram illustrating the first state.A diagram illustrating the second state.Example of terminal device configuration.Example of a communication device configuration.A schematic diagram illustrating the process of the first embodiment.A diagram illustrating the processing flow of the first embodiment.A flowchart illustrating the processing of the second communication device.A flowchart illustrating the processing of a communication device.A flowchart explaining the processing performed by the terminal device.A schematic diagram illustrating the process of the second embodiment.A diagram illustrating the processing flow of the second embodiment.A flowchart illustrating the processing of a communication device.A flowchart explaining the processing performed by the terminal device. The following description of this embodiment will be made with reference to the drawings. In the drawings, identical or equivalent elements are denoted by the same reference numerals, and redundant descriptions are omitted. This embodiment described below is not intended to unduly limit the scope of the claims. Furthermore, not all configurations described in this embodiment are necessarily essential components of this disclosure. 1. Example of System Configuration Figures 1A and 1B illustrate the configuration of the communication system 10 according to this embodiment. The communication system 10 includes a terminal device 100 and a communication device 200. The communication system 10 may also include a second communication device 300 and a core network 400. As shown in Figures 1A and 1B, the communication device 200 communicates with the second communication device 300. For example, the communication device 200 and the second communication device 300 communicate using a first communication method. The first communication method may be a wireless communication method defined in, for example, 3GPP, and specifically, a wireless communication method using 5GS (5G System). Hereinafter, communication using 5GS will be referred to as 5G communication. In the following, 5G communication will be described as a specific example of communication using the first communication method in this embodiment, but the first communication method is not limited to a method using 5GS; it may be other methods, such as standards that have evolved from it. Furthermore, the first communication method may include mobile communication methods such as LTE (Long Term Evolution) and 3G. That is, "5G communication" in the following description can be replaced with the first communication method, and the first communication method may be a method other than 5GS. The second communication device 300 may be a 5G NR base station (gNB). In Figures 1A and 1B, A1 represents a cell within the range of communication with the second communication device 300. Hereafter, to mainly explain the 5G example, A1 will be referred to as a 5G cell. A device compatible with 5GS and located within the range of 5G cell A1 can perform 5G communication with the second communication device 300. The communication device 200 is connected to the core network 400 via the second communication device 300, which is an NR base station. The core network 400 is, for example, a 5G core network. Hereafter, the 5G core network will also be referred to as 5GC. Furthermore, the communication device 200 performs communication using a second communication method different from the first communication method. The second communication method is, for example, wireless communication in accordance with the communication method specified in IEEE (Institute of Electrical and Electronics Engineers) 802.11. Specifically, the second communication method may be communication using Wi-Fi (registered trademark). Hereinafter, communication using Wi-Fi will be referred to as Wi-Fi communication. While Wi-Fi communication will be described below as a specific example of communication using the second communication method in this embodiment, the second communication method is not limited to Wi-Fi. For example, various non-3GPP communication methods can be used as the second