Invention Grant
- Patent Title: Mobile station device, base station device, communication system, communication method, and program
- Patent Title (中): 移动台设备，基站设备，通信系统，通信方式和程序
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Application No.: US12672210Application Date: 2008-08-08
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Publication No.: US08879512B2Publication Date: 2014-11-04
- Inventor: Yasuo Sugawara , Shohei Yamada , Yasuyuki Kato , Daiichiro Nakashima
- Applicant: Yasuo Sugawara , Shohei Yamada , Yasuyuki Kato , Daiichiro Nakashima
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2007-207955 20070809
- International Application: PCT/JP2008/064338 WO 20080808
- International Announcement: WO2009/020213 WO 20090212
- Main IPC: H04B7/216
- IPC: H04B7/216
Abstract:
Provided is a mobile station device which can increase the success ratio and reduce a communication delay when transmitting a dedicated preamble from the mobile station device to a base station device by using a random access channel (RACH). The mobile station device performs random access to the base station device by using a dedicated preamble. The mobile station device transmits a first message by using the dedicated preamble and again transmits the first message using the dedicated preamble during a period (a random access response reception-uncertain period) when the base station device may transmit a second message as a response to the first message.
Public/Granted literature
- US20110237265A1 MOBILE STATION DEVICE, BASE STATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM Public/Granted day:2011-09-29
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