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:
Apr. 24, 2018
Filed:
Aug. 19, 2015
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kenji Kawai, Tokyo, JP;
Yuki Arikawa, Tokyo, JP;
Tomoaki Kawamura, Tokyo, JP;
Nobuyuki Tanaka, Tokyo, JP;
Satoshi Shigematsu, Tokyo, JP;
Naoki Miura, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An OLT () is formed by N optical transceivers (), one PON control circuit (), and one selection and distribution circuit (). An optical transceiver selection control signal (SC) is transferred from the PON control circuit () to the selection and distribution circuit (). The optical transceiver selection control signal (SC) indicates the timing of a discovery window, the timing of a grant, and a logical link identification number of a registered ONU assigned to the grant (a logical link identification number for a logical link with the registered ONU). The selection and distribution circuit () selects one optical transceiver (-(s is an integer falling within a range of 0 to N−1)) from the optical transceivers (-to-N) based on the optical transceiver selection control signal (SC) from the PON control circuit ().