Invention Grant
- Patent Title: Communication management apparatus, communication node, and communication system, and data communication method
- Patent Title (中): 通信管理装置,通信节点和通信系统以及数据通信方式
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Application No.: US13142192Application Date: 2008-12-25
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Publication No.: US09049097B2Publication Date: 2015-06-02
- Inventor: Masato Nakamura , Tatsumi Yabusaki , Tomitsugu Sugimoto
- Applicant: Masato Nakamura , Tatsumi Yabusaki , Tomitsugu Sugimoto
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI ELECTRIC CORP.
- Current Assignee: MITSUBISHI ELECTRIC CORP.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Agent Richard C. Turner
- International Application: PCT/JP2008/073631 WO 20081225
- International Announcement: WO2010/073345 WO 20100701
- Main IPC: H04L12/26
- IPC: H04L12/26 ; H04L12/42 ; H04L12/417 ; H04L12/433 ; H04L12/403 ; H04L12/24

Abstract:
The communication management apparatus includes a network-presence-check processing unit that performs network presence check processing for generating network presence information, a token-circulation-order determining unit that determines token circulation order using the network presence information, a setup processing unit that notifies each of communication nodes in the network of token circulation destination information, a token-frame processing unit that, after transmission of a data frame by a data-frame-communication processing unit, transmits, based on the token circulation order, a token frame including information concerning a transmission right acquiring apparatus that acquires a transmission right next and determines whether the transmission right acquiring apparatus of the transmission right acquiring apparatus information of the received token frame is the own apparatus, and the data-frame-communication processing unit that performs transmission and reception processing for a data frame for acquiring the transmission right.
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