Invention Grant
- Patent Title: Communication management method, communication terminal, communication management program, recording medium containing the communication management program, and communication system
- Patent Title (中): 通信管理方法，通信终端，通信管理程序，包含通信管理程序的记录介质和通信系统
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Application No.: US10489731Application Date: 2002-09-12
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Publication No.: US07852823B2Publication Date: 2010-12-14
- Inventor: Ken Nakashima , Yoshihiro Ohtani , Toru Ueda , Srinivas Kandala
- Applicant: Ken Nakashima , Yoshihiro Ohtani , Toru Ueda , Srinivas Kandala
- Applicant Address: JP Osaka-shi
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka-shi
- Agency: Birch Stewart Kolasch & Birch, LLP
- Priority: JP2001-282074 20010917
- International Application: PCT/JP02/09378 WO 20020912
- International Announcement: WO03/026215 WO 20030327
- Main IPC: H04B7/212
- IPC: H04B7/212
Abstract:
When a transmission station having a voluntary transmission right transmits FINALL FRAME as a TXOP ending frame to HC, the HC transmits an acknowledgement frame ACK after SIFS following the reception of FINAL FRAME. Here, when the transmitting station has detected that no frame transmission is performed over the communication network from any other ESTAs in PIFS after the transmission of FINAL FRAME, FINAL FRAME is retransmitted in DIFS after the transmission of FINAL FRAME. By performing such a communication management, it is possible to accurately manage a voluntary transmission right even when the communication medium has a low reliability in a network in which one network pathway is time-shared by a plurality of communication apparatuses.
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