Patent ID: 11962502
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A communication system comprising:
a control apparatus configured to control communication between a plurality of locations,
a first Customer Premises Equipment (CPE) at a first location of the plurality of locations, and
a second CPE at a second location of the plurality of locations, wherein
the control apparatus includes
a database configured to store, for each of the plurality of locations, a respective key for identifying a respective content and a respective IP address of a respective CPE in association with each other, wherein the respective key comprises a respective Uniform Resource Identifier (URI) of the respective content,
a search section, including one or more processors, configured to (i) receive a CPE address request message including a key identifying a target URI from a first CPE of a certain location of the plurality of locations and (ii) search the database to acquire an IP address of a second CPE corresponding to the key identifying the target URI, and
a response section, including one or more processors, configured to transmit the IP address of the second CPE acquired by the search section to the first CPE, and
the first CPE is configured to add, to a packet received from a host of the first location, the IP address of the second CPE as a transmission destination address, add the IP address of the first CPE as a transmission source address, and transmit a packet to which the transmission destination address and the transmission source address are added.