US 11,864,097 B2
Communication system and communication method
Aki Fukuoka, Tokyo (JP); and Koji Sugisono, Tokyo (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/268,150
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Aug. 9, 2019, PCT No. PCT/JP2019/031778
§ 371(c)(1), (2) Date Feb. 12, 2021,
PCT Pub. No. WO2020/036161, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 2018-152743 (JP), filed on Aug. 14, 2018.
Prior Publication US 2022/0030510 A1, Jan. 27, 2022
Int. Cl. H04W 48/18 (2009.01); H04W 24/10 (2009.01); H04W 28/02 (2009.01); H04W 76/12 (2018.01); H04L 12/28 (2006.01); H04L 47/78 (2022.01); H04W 28/26 (2009.01); H04W 88/16 (2009.01); H04W 88/18 (2009.01)
CPC H04W 48/18 (2013.01) [H04L 12/2865 (2013.01); H04L 12/2872 (2013.01); H04L 12/2898 (2013.01); H04L 47/78 (2013.01); H04W 24/10 (2013.01); H04W 28/0236 (2013.01); H04W 28/26 (2013.01); H04W 76/12 (2018.02); H04W 88/16 (2013.01); H04W 88/18 (2013.01)] 6 Claims
OG exemplary drawing
 
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.