U.S.Patent Apr.9,2019 Sheet 2 of 10 US10,257,802B2 301 302 303 304 First receiving First Second Establishment unit forwarding unit receiving unit unit 306 305 Second Adjustment forwarding unit unit FIG.3 401 402 403 404 First receiving First forwarding Second Establishment unit unit receiving unit unit 407 406 405 Third receiving Second unit forwarding unit Adjustment unit 408 409 Matching unit Third forwarding unit FIG.4atent Apr . 9 , 2019 Sheet 2 of 10 US 10 , 257 , 802 B2 301 302 303 304 First receiving First Second receiving unit Establishment unit forwarding unit unit 306 305 Second Adjustment unit FIG . 3 401 402 403 404 First receiving unit First forwarding unit Second receiving unit Establishment unit 407 406 405 Third receiving unit Second forwarding unit Adjustment unit 409 Matching unit Third forwarding unit FIG . 4