US 12,068,956 B2
Communication apparatus, receiving side communication apparatus, communication method and program
Mitsuo Amasaka, Musashino (JP); Tomohiro Okada, Musashino (JP); Shunsuke Homma, Musashino (JP); Takayuki Nakamura, Musashino (JP); and Takuya Sato, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/759,871
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Feb. 25, 2020, PCT No. PCT/JP2020/007460
§ 371(c)(1), (2) Date Aug. 1, 2022,
PCT Pub. No. WO2021/171364, PCT Pub. Date Sep. 2, 2021.
Prior Publication US 2023/0119073 A1, Apr. 20, 2023
Int. Cl. G06F 15/173 (2006.01); H04L 45/00 (2022.01); H04L 45/42 (2022.01); H04L 45/74 (2022.01)
CPC H04L 45/74 (2013.01) [H04L 45/42 (2013.01); H04L 45/566 (2013.01)] 7 Claims
OG exemplary drawing
 
6. A communication method performed by a communication device including a storage that stores a conversion table and a redistribution table, the communication method comprising:
receiving a packet from a server, the packet being addressed to a user terminal;
calculating a hash value of the received packet and store the packet for each hash value in a corresponding pool;
performing a determination of a packet transformation and transmission based on the corresponding pool;
converting a first destination address of the packet into a multicast address by referring to the conversion table;
adding, to the packet, an identification ID identifying a group to which the user terminal belongs;
acquiring a second destination address from the redistribution table based on the multicast address and the identification ID, the second destination address being an IP address as a destination for the received packet;
converting the first destination address from the multicast address into the second destination address based on the corresponding pool, and
transmitting the packet to which the identification ID is added based on the converted second destination address.