JP-7856921-B2 - Communication system, management and control device, communication station, and control method

Inventors

• 梅田 果凜
• 酒井 慈仁
• 野村 紘子
• 島田 達也
• 氏川 裕隆

Assignees

• ＮＴＴ株式会社

Dates

Publication Date

20260512

Application Date

20230516

Priority Date

20220517

Claims (16)

1. One or more terminal exchanges that communicate with one or more terminals, Multiple communication stations connected directly or via other devices to the aforementioned one or more terminal exchange stations, A cooperation information collection unit that acquires cooperation information from the communication station indicating the communication status between the communication station and the one or more terminals, When it is determined that switching of optical paths between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned coordination information, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts communication stations capable of going into sleep mode into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a communication system that acquires the collaborative information via a wireless controller that performs wireless communication with each of the multiple communication stations .
2. One or more terminal exchanges that communicate with one or more terminals, Multiple communication stations connected directly or via other devices to the aforementioned one or more terminal exchange stations, A cooperation information collection unit that acquires cooperation information from the communication station indicating the communication status between the communication station and the one or more terminals, When it is determined that switching of optical paths between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned coordination information, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts communication stations capable of going into sleep mode into sleep mode before or after the optical path switching has occurred, Equipped with, The aforementioned linked information includes at least information on the number of terminals accommodated per communication station and information on the maximum number of terminals accommodated per communication station. The system further includes an analysis unit that determines, based on information on the number of terminals accommodated by each communication station and information on the maximum number of terminals accommodated by each communication station, whether switching of the optical path between the one or more terminal-accommodating stations and the multiple communication stations is necessary if all terminals accommodated by the communication station subject to sleep determination can be accommodated by other communication stations. The optical path switching control unit controls the switching of optical paths so that the terminal station connected to the communication station subject to the sleep determination is connected to the other communication station. The sleep control unit transitions the communication station subject to the sleep determination to a sleep state as a communication station capable of sleep, The aforementioned collaborative information further includes at least one of the following: processing load information relating to the processing load for each communication station, or information on transmission delays between one or more terminals and the plurality of communication stations. The analysis unit determines, based on the information on the number of terminals accommodated by each communication station, the information on the maximum number of terminals accommodated by each communication station, and the processing load information or transmission delay information, that switching of the optical path between the one or more terminal-accommodating stations and the multiple communication stations is necessary if all terminals accommodated by the communication station subject to sleep determination can be accommodated by other communication stations . Communication system.
3. A communication station connected directly or via other devices to one or more terminal exchanges that communicate with one or more terminals, and a cooperation information collection unit that acquires cooperation information from the communication station indicating the status of communication between the one or more terminals, An analysis unit that determines whether or not switching of optical paths and sleep control are necessary between the one or more terminal stations and multiple communication stations based on the aforementioned coordination information, When it is determined that switching of optical paths is necessary between the one or more terminal stations and the multiple communication stations, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts communication stations capable of going into sleep mode into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a management control device that acquires the collaborative information via a wireless controller that communicates wirelessly with the communication station .
4. A communications station connected to a terminal exchange that communicates with terminals, A transmitting unit that transmits coordination information indicating the communication status with the terminal to a management control device, A receiving unit receives an optical path switching instruction indicating that the management control device has determined, based on the cooperation information, that it is necessary to switch the optical path between the terminal station and the communication station. A sleep processing unit that enters a sleep state before or after the switching of the optical path based on the optical path switching instruction, Equipped with , The transmitting unit is a communication station that transmits the cooperation information to the management control device via a wireless controller that communicates wirelessly with the device .
5. A communication station connected directly or via other devices to one or more terminal exchange stations that communicate with one or more terminals acquires cooperation information indicating the communication status between the one or more terminals via a wireless controller that communicates wirelessly with the communication station. If it is determined that switching of the optical path between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned cooperation information, the switching of the optical path between the one or more terminal stations and the multiple communication stations will be controlled. Before or after the optical path switchover, put communication stations capable of going into sleep mode into sleep mode. Control method.
6. One or more terminal exchanges that communicate with one or more terminals, Multiple communication stations connected directly or via other devices to the aforementioned one or more terminal exchange stations, A cooperation information collection unit that acquires cooperation information from the communication station indicating the communication status between the communication station and the one or more terminals, When it is determined that switching of optical paths between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned coordination information, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. Before the optical path is switched, a sleep control unit puts communication stations that can enter sleep mode into sleep mode, A communication system equipped with [the following features].
7. One or more terminal exchanges that communicate with one or more terminals, Multiple communication stations connected directly or via other devices to the aforementioned one or more terminal exchange stations, A cooperation information collection unit acquires cooperation information from the communication station, which indicates the communication status between the communication station and the one or more terminals, and which includes any of the following: information regarding the processing load of the communication station, information regarding the processing delay of the communication station, or information regarding the transmission delay between the communication station and the one or more terminals. When it is determined that switching of optical paths between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned coordination information, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts communication stations capable of going into sleep mode into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a communication system that acquires the collaborative information via a wireless controller that performs wireless communication with each of the multiple communication stations .
8. One or more terminal exchanges that communicate with one or more terminals, Multiple communication stations connected directly or via other devices to the aforementioned one or more terminal exchange stations, A cooperation information collection unit that acquires cooperation information from the communication station indicating the communication status between the communication station and the one or more terminals, Based on the aforementioned coordination information, if all terminals accommodated by one of the multiple communication stations to be put into sleep mode can be accommodated by other communication stations, an optical path switching control unit controls the switching of optical paths between the one or more terminal accommodation stations and the multiple communication stations. A sleep control unit that puts the communication station to be put into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a communication system that acquires the collaborative information via a wireless controller that performs wireless communication with each of the multiple communication stations .
9. A communication station connected directly or via other devices to one or more terminal exchanges that communicate with one or more terminals, and a cooperation information collection unit that acquires cooperation information from the communication station indicating the status of communication between the one or more terminals, An analysis unit that determines whether or not switching of optical paths and sleep control are necessary between the one or more terminal stations and multiple communication stations based on the aforementioned coordination information, When it is determined that switching of optical paths is necessary between the one or more terminal stations and the multiple communication stations, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. Before the optical path is switched, a sleep control unit puts communication stations that can enter sleep mode into sleep mode, A control and management device equipped with the following features.
10. A communication station connected directly or via other devices to one or more terminal exchanges that communicate with one or more terminals, and a cooperation information collection unit that acquires cooperation information from the communication station indicating the status of communication between the one or more terminals, which includes information regarding the processing load of the communication station, information regarding the processing delay of the communication station, or information regarding the transmission delay between the communication station and the one or more terminals. An analysis unit that determines whether or not switching of optical paths and sleep control are necessary between the one or more terminal stations and multiple communication stations based on the aforementioned coordination information, When it is determined that switching of optical paths is necessary between the one or more terminal stations and the multiple communication stations, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts communication stations capable of going into sleep mode into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a management control device that acquires the collaborative information via a wireless controller that communicates wirelessly with the communication station .
11. A communication station connected directly or via other devices to one or more terminal exchanges that communicate with one or more terminals, and a cooperation information collection unit that acquires cooperation information from the communication station indicating the status of communication between the one or more terminals, An analysis unit determines, based on the aforementioned coordination information, that if all terminals accommodated by a communication station to be put into sleep mode can be accommodated by other communication stations, then switching of optical paths and sleep control between the one or more terminal-accommodating stations and the multiple communication stations is necessary. When it is determined that switching of optical paths is necessary between the one or more terminal stations and the multiple communication stations, an optical path switching control unit controls the switching of optical paths between the one or more terminal stations and the multiple communication stations. A sleep control unit that puts the communication station to be put into sleep mode before or after the optical path switching has occurred, Equipped with , The aforementioned collaborative information collection unit is a management control device that acquires the collaborative information via a wireless controller that communicates wirelessly with the communication station .
12. A communications station connected to a terminal exchange that communicates with terminals, A transmitting unit that transmits coordination information indicating the communication status with the terminal to a management control device, A receiving unit receives an optical path switching instruction indicating that the management control device has determined, based on the cooperation information, that it is necessary to switch the optical path between the terminal station and the communication station. A sleep processing unit that enters a sleep state before the optical path is switched based on the optical path switching instruction, A communications station equipped with the necessary equipment.
13. A communications station connected to a terminal exchange that communicates with terminals, A transmission unit transmits to a management control device cooperation information indicating the status of communication with the terminal, which includes any of the following: information regarding the processing load of the communication station, information regarding the processing delay of the communication station, or information regarding the transmission delay between the communication station and the terminal. A receiving unit receives an optical path switching instruction indicating that the management control device has determined, based on the cooperation information, that it is necessary to switch the optical path between the terminal station and the communication station. A sleep processing unit that enters a sleep state before or after the switching of the optical path based on the optical path switching instruction, Equipped with , The transmitting unit is a communication station that transmits the cooperation information to the management control device via a wireless controller that communicates wirelessly with the device .
14. A communication station, which is directly or via other devices connected to one or more terminal exchanges that communicate with one or more terminals, obtains cooperation information from the communication station indicating the status of communication between the one or more terminals. If it is determined that switching of optical paths between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned cooperation information, the switching of optical paths between the one or more terminal stations and the multiple communication stations will be controlled. Before the optical path is switched, any communication stations that can enter sleep mode are put into sleep mode. Control method.
15. A communication station connected directly or via other devices to one or more terminal exchange stations that communicate with one or more terminals, and a communication station that communicates with one or more terminals, are provided with cooperation information indicating the status of communication between the one or more terminals, which includes information regarding the processing load of the communication station, information regarding the processing delay of the communication station, or information regarding the transmission delay between the communication station and the one or more terminals. This cooperation information is acquired via a wireless controller that communicates wirelessly with the communication station. If it is determined that switching of the optical path between the one or more terminal stations and the multiple communication stations is necessary based on the aforementioned cooperation information, the switching of the optical path between the one or more terminal stations and the multiple communication stations will be controlled. Before or after the optical path switchover, put communication stations capable of going into sleep mode into sleep mode. Control method.
16. A communication station connected directly or via other devices to one or more terminal exchange stations that communicate with one or more terminals acquires cooperation information indicating the communication status between the one or more terminals via a wireless controller that communicates wirelessly with the communication station. Based on the aforementioned coordination information, if all terminals accommodated by one of the multiple communication stations to be put into sleep mode can be accommodated by other communication stations, the switching of the optical path between the one or more terminal-accommodating stations and the multiple communication stations is controlled. Before or after the optical path switching occurs, the communication station to be put into sleep mode is put into sleep mode. Control method.

Description

The present invention relates to a communication system, a management and control device, a communication station, and a control method. This application claims priority based on PCT/JP2022/20495, filed in Japan on May 17, 2022, and the contents of that application are incorporated herein by reference. In conventional communication systems that perform wireless communication between terminals and base stations, each base station calculates the throughput and automates the system to enter sleep mode when the throughput exceeds a threshold, thereby saving power. In such communication systems, terminals connected to a sleeping base station are instructed to hand over to the base station with the highest throughput. This allows the terminal to continue communicating. Yong Sheng Soh, Tony Q.S.Quek, and Marios Kountouris, “Dynamic Sleep Mode Strategies in Energy Efficient Cellular Networks”, IEEE, Communications Theory, pp.3131 3136, June 2013. This diagram illustrates the overall configuration and processing overview of the mobile network system in the embodiment.This figure shows an example configuration of a mobile network system in the first embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the first embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the first embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by the mobile network system in the first embodiment.This flowchart shows an example of the sleep wake-up process performed by the management control device in the first embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by the mobile network system in the first embodiment.This figure shows an example of the configuration of a mobile network system in a modified version of the first embodiment.This figure shows an example of the configuration of a mobile network system in a modified version of the first embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by a mobile network system in a modified version of the first embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by a mobile network system in a modified version of the first embodiment.This figure shows an example configuration of a mobile network system in the second embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the second embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the second embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by the mobile network system in the second embodiment.This flowchart shows an example of the sleep wake-up process performed by the management control device in the second embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by the mobile network system in the second embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by a mobile network system in a modified version of the second embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by a mobile network system in a modified version of the second embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the third embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the third embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by the mobile network system in the third embodiment.This flowchart shows an example of the sleep wake-up process performed by the management control device in the third embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by the mobile network system in the third embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by a mobile network system in a modified version of the third embodiment.This sequence diagram shows an example of a detailed flow of the sleep wake-up process performed by a mobile network system in a modified version of the third embodiment.This figure shows an example configuration of a mobile network system in the fourth embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the fourth embodiment.This flowchart shows an example of the sleep process flow executed by the management control device in the fourth embodiment.This sequence diagram shows an example of a detailed flow of the sleep process performed by the mobile network system in the fourth embodi