Patent ID: 11864097
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A communication method executed by a communication system including a network slice being a virtual logical network provided on a physical resource, an SLG provided at an end of the network slice, the SLG including a plurality of the SLGs, and a vCPE configured to accommodate a terminal, the communication method comprising:
receiving, by the SLG, a network slice reservation request including a network condition from the vCPE;
selecting, by the SLG, a destination SLG of the network slice satisfying the network condition, based on topology information, a latency state, and processing capability information regarding each of the other SLGs to reserve the network slice, wherein selecting the destination SLG comprises:
receiving the network slice reservation request including service level agreement (SLA) information of the terminal and a required network functions virtualization (NFV) from the vCPE,
selecting, by the SLG, based on the topology information, the latency state, and the processing capability information regarding each of the other SLGs, the destination SLG including a corresponding NFV, and
transmitting, by the SLG, a request for reserving resources up to the selected destination SLG and a request for reserving the corresponding NFV to the destination SLG to establish a network slice;
newly activating, by the SLG, a destination SLG to establish the network slice satisfying the network condition, if there is neither a network slice nor a destination SLG satisfying the network condition; and
allocating, by the SLG, traffic transmitted from the vCPE to the reserved or established network slice.