The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2015
Filed:
Jun. 25, 2012
Nobuyuki Enomoto, Tokyo, JP;
Hideyuki Shimonishi, Tokyo, JP;
Junichi Higuchi, Tokyo, JP;
Youichi Hidaka, Tokyo, JP;
Jun Suzuki, Tokyo, JP;
Takashi Yoshikawa, Tokyo, JP;
Nobuyuki Enomoto, Tokyo, JP;
Hideyuki Shimonishi, Tokyo, JP;
Junichi Higuchi, Tokyo, JP;
Youichi Hidaka, Tokyo, JP;
Jun Suzuki, Tokyo, JP;
Takashi Yoshikawa, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
Any packet loss is detected very quickly by means of only a series of sequence number in a multi-path environment where a transmitter and a receiver are connected to each other by way of a plurality of networks when no inversion of sequence arises in any of the networks. A communication apparatus includes a plurality of sequence buffers arranged at each network to accumulate packets until a sequence acknowledgement and an absence detecting section adapted to determine the occurrence of an absence of a packet when one or more packets are accumulated in all the sequence buffers. With this arrangement, the absence detecting section of the receiver monitors the packets staying in the sequence guaranteeing buffer arranged in each of the network, paying attention to the characteristic that packets are stored in the sequence buffers of all the networks when a packet loss takes place.