Controller, control circuit, and resource allocation method

A control circuit for controlling a controller of a wireless access network, the control circuit causing the controller to perform:

• obtaining information about resource of a device and information about connection between devices in a wireless access network;
• calculating physical path resource information based on the information about resource of the device and on the information about connection between the devices, the physical path resource information being information about resource of a physical path between the devices;
• calculating abstract path resource information based on the physical path resource information, the abstract path resource information representing representative of the physical path resource information;
• generating correlation information based on the abstract path resource information and on link information associated with information about resource extracted as the abstract path resource information, the correlation information being information about correlation between abstract paths;
• storing, by a resource pool, the abstract path resource information and the correlation information;
• temporarily storing, by a temporary resource pool, the abstract path resource information and the correlation information, each being information stored in the resource pool;
• determining, upon reception of a slice request, whether a slice meeting a requirement is capable of being generated, based on information stored in the temporary resource pool, and issuing an instruction to reserve a physical path when determining that a slice meeting the requirement is capable of being generated;
• and
• updating the information in the temporary resource pool based on an abstract resource allocated to the slice from the abstract path.

A resource allocation method for use in a controller of a wireless access network, the resource allocation method comprising:

• obtaining information about resource of a device and information about connection between devices in a wireless access network;
• calculating physical path resource information based on the information about resource of the device and on the information about connection between the devices, the physical path resource information being information about resource of a physical path between the devices;
• calculating abstract path resource information based on the physical path resource information, the abstract path resource information representing representative of the physical path resource information;
• generating correlation information based on the abstract path resource information and on link information associated with information about resource extracted as the abstract path resource information, the correlation information being information about correlation between abstract paths;
• storing the abstract path resource information and the correlation information in a resource pool;
• temporarily storing the abstract path resource information and the correlation information in a temporary resource pool, each of the abstract path resource information and the correlation information being information stored in the resource pool;
• upon reception of a slice request, determining whether a slice meeting a requirement is capable of being generated, based on information stored in the temporary resource pool, and issuing an instruction to reserve a physical path when determining that a slice meeting the requirement is capable of being generated;
• and
• updating the information in the temporary resource pool based on an abstract resource allocated to the slice from the abstract path.