Invention Grant
- Patent Title: Diagnostic system
- Patent Title (中): 诊断系统
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Application No.: US14344367Application Date: 2012-09-10
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Publication No.: US09369359B2Publication Date: 2016-06-14
- Inventor: Masaki Umayabashi , Akira Sakurai , Zhenlong Cui
- Applicant: Masaki Umayabashi , Akira Sakurai , Zhenlong Cui
- Applicant Address: JP Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP2011-204592 20110920
- International Application: PCT/JP2012/073019 WO 20120910
- International Announcement: WO2013/042564 WO 20130328
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04L12/26
Abstract:
A transmission source node transmits diagnostic frames where a TTL value is set to the number of hops that is counted until an intermediate node. A relay node decrements the TTL value of the received diagnostic frames, counts the number of diagnostic frames where the decremented TTL value is 0, and recognizes continuity between the transmission source node and the relay node based on the number of transmitted diagnostic frames transmitted from the transmission source node and the number of diagnostic frames where the decremented TTL value is 0.
Public/Granted literature
- US20140341044A1 DIAGNOSTIC SYSTEM Public/Granted day:2014-11-20
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