US-20260128967-A1 - COMMUNICATION DEVICE, WIRELESS DEVICE, CONTROL DEVICE, WIRELESS COMMUNICATION SYSTEM, AND CONTROL METHOD

US20260128967A1US 20260128967 A1US20260128967 A1US 20260128967A1US-20260128967-A1

Abstract

A communication device in a wireless communication system constructed based on an open interface specification, the communication device includes a communication device receiver that receives a service query including service information related to a type of a service from the control device and a communication device transmitter that transmits a wireless device service query including the type of the service to all the wireless devices under the control when the communication device supports the service, wherein the communication device receiver receives presence or absence of support of the service from the wireless device, and the communication device transmitter transmits, to the control device, a service query notification including identification information of a supporting wireless device that supports the service among the wireless devices under the control of the communication device.

Inventors

Yuzo Ito
Koji Ogawa
Yasunori Otsuka

Assignees

FUJITSU LIMITED

Dates

Publication Date: 20260507
Application Date: 20251121

Claims (12)

1 . A communication device in a wireless communication system constructed based on an open interface specification, the wireless communication system including a control device, a wireless device that accommodates a wireless terminal, and the communication device that processes a signal of the wireless device, each of the communication devices including one or more of the wireless devices under control of the communication device, the communication device comprising: a communication device receiver that receives a service query including service information related to a type of a service from the control device; and a communication device transmitter that transmits a wireless device service query including the type of the service to all the wireless devices under the control when the communication device supports the service, wherein the communication device receiver receives presence or absence of support of the service from the wireless device, and the communication device transmitter transmits, to the control device, a service query notification including identification information of a supporting wireless device that supports the service among the wireless devices under the control of the communication device.
2 . The communication device according to claim 1 , wherein the service query notification further includes service version information in which the service is executable.
3 . The communication device according to claim 1 , wherein the communication device receiver receives wireless device version information that is supportable by the supporting wireless device, from the supporting wireless device, and the service query notification further includes supportable version information that is selected on a basis of backward compatibility (backward compatibility) and is supportable by both the communication device and the supporting wireless device.
4 . The communication device according to claim 1 , wherein when the communication device does not support the service, the service query notification includes communication device non-support information indicating that the communication device does not support the service.
5 . The communication device according to claim 1 , wherein when the communication device supports the service and when all the wireless devices under the control of the communication device do not support the service, the service query notification includes wireless device non-support information indicating that all the wireless devices under the control of the communication device do not support the service.
6 . A wireless device in a wireless communication system constructed based on an open interface specification, the wireless communication system including a control device, the wireless device that accommodates a wireless terminal, and a communication device that processes a signal of the wireless device, each of the communication devices including one or more of the wireless devices under control of the communication device, the wireless device comprising: a wireless device receiver that receives a wireless device service query including a type of a service transmitted by the communication device having received a service query including service information related to the type of the service transmitted from the control device; and a wireless device transmitter that transmits presence or absence of support of the service to the communication device, wherein the communication device transmits, to the control device, a service query notification including identification information of a supporting wireless device that supports the service, in response to reception of presence or absence of the support of the service from the wireless device.
7 . A control device in a wireless communication system constructed based on an open interface specification, the wireless communication system including the control device, a wireless device that accommodates a wireless terminal, and a communication device that processes a signal of the wireless device, each of the communication devices including one or more of the wireless devices under control of the communication device, the control device comprising: a transmitter that transmits a service query including service information related to a type of a service to the communication device; and a receiver that receives a service query notification including support information of the service from the communication device, wherein when the communication device supports the service, the support information includes identification information of a supporting wireless device that is the wireless device supporting the service and is under the control of the communication device.
8 . The control device according to claim 7 , wherein when the communication device supports the service, the support information further includes service version information in which the service is executable.
9 . The control device according to claim 7 , wherein when the communication device supports the service, the support information further includes supportable version information that is selected on a basis of backward compatibility (backward compatibility) and is supportable by both the communication device and the supporting wireless device.
10 . The control device according to claim 7 , wherein when the communication device does not support the service, the support information includes communication device non-support information indicating that the communication device does not support the service.
11 . The control device according to claim 7 , wherein when the communication device supports the service and when all the wireless devices under the control of the communication device do not support the service, the support information includes wireless device non-support information indicating that all the wireless devices under the control of the communication device do not support the service.
12 . A control device in a wireless communication system constructed based on an open interface specification including the control device, a wireless device that accommodates a wireless terminal, and a communication device that processes a signal of the wireless device, each of the communication devices including one or more of the wireless devices under control of the communication device, the control device comprising: a transmitter that transmits a service query including service information related to a type of a service to the communication device; and a receiver that receives a service query notification including support information of the service from the communication device, wherein when the communication device supports the service, the support information includes identification information of a supporting wireless device that is the wireless device supporting the service and is under the control of the communication device, and the communication device performs a query on all the wireless devices under the control about presence or absence of support of the service, and determines the supporting wireless device from a result of the query.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation application of International Application Number PCT/JP2023/020366 filed on May 31, 2023 and designated the U.S., the entire contents of which are incorporated herein by reference. FIELD The disclosure relates to a communication device, a wireless device, a control device, a wireless communication system, and a control method. BACKGROUND In recent years, an open radio access network (O-RAN), which is a 5G radio access network constructed based on an open interface specification and in which functions are separated, has attracted attention. The interface (fronthaul interface) between the DU and the RU has been designed for each vendor of the communication devices, but the O-RAN (Open RAN) Alliance defines the interface of the radio access network and the specification of communication devices. By providing a communication device conforming to the O-RAN specification, a device vendor enables mutual connection with communication devices of other providers. The O-RAN can use subcomponents provided by various service providers and vendors. In the O-RAN, for example, functions of a base station device are separated into a distributed unit (DU) and a radio unit (RU). The RU is a unit that transmits and receives radio signals, and the DU is a unit that controls the RU. Furthermore, the O-RAN includes, for example, an operation system (OPS) that monitors/controls the DU. In the O-RAN, the O-RAN specification version (hereinafter, it may be referred to as an ORAN version number) supported by the devices may be different depending on the development time of each connected device. Therefore, in the O-RAN specification, backward compatibility (backward compatibility) is guaranteed in order to realize an interface with a lower ORAN version number device. In the radio access network, for example, a NETCONF (NETwork CONFiguration) protocol is used to acquire and update the configuration of a network device. NETCONF is one of standard transport protocols for communicating with network devices. In NETCONF, a Yet Another Next Generation (YANG) modeling language is used as a description language for setting items and the like. That is, in NETCONF, a network device is configured on the basis of the data described in YANG. YANG is one of modeling languages developed for the purpose of describing structures such as setting items, states, and procedure calls of a network device in a form easily interpreted by a person. It should be noted that data obtained by abstracting the setting value and the structure of a network device by using YANG may be referred to as a “YANG data model” or a “YANG module”. In the O-RAN specification, backward compatibility (backward compatibility) is guaranteed in YANG module in order to realize an interface with a lower ORAN version number device. Techniques related to O-RAN are described in the following citation list. CITATION LIST Patent Literature Patent Literature 1: WO 2021/181910 APatent Literature 2: JP 2022-554262 A As described above, respective devices constituting the O-RAN may have different corresponding ORAN version numbers depending on the development time or the like. The operator combines these devices to provide a service to the user, but needs to investigate the ORAN version numbers of the devices to be combined and the services that can be supported by the devices in order to start the target service. This is because, even in a device conforming to the O-RAN specification, for example, there is a case where a service that is not indispensable is not supported due to restrictions such as a hardware configuration. Therefore, for example, the operator investigates the ORAN version numbers and the services supported by these devices for all the devices used in the operation, which may need enormous man-hours. SUMMARY A communication device in a wireless communication system constructed based on an open interface specification, the wireless communication system including a control device, a wireless device that accommodates a wireless terminal, and the communication device that processes a signal of the wireless device, each of the communication devices including one or more of the wireless devices under control of the communication device, the communication device includes a communication device receiver that receives a service query including service information related to a type of a service from the control device and a communication device transmitter that transmits a wireless device service query including the type of the service to all the wireless devices under the control when the communication device supports the service, wherein the communication device receiver receives presence or absence of support of the service from the wireless device, and the communication device transmitter transmits, to the control device, a service query notification including identification information of a supporting wireless