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:
Aug. 20, 2013
Filed:
Mar. 31, 2011
Kang-chiao Lin, Zhushan Township, Nantou County, TW;
Kai-yun Ho, Taichung, TW;
Hsia-hsin LI, Hsinchu, TW;
Kang-Chiao Lin, Zhushan Township, Nantou County, TW;
Kai-Yun Ho, Taichung, TW;
Hsia-Hsin Li, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method for switching service channels in a vehicular environment is provided for performing communications between a user unit and a service provider unit according to a switch ratio between a service channel and a control channel in a multi-channel switching wireless communication environment. The method includes the following steps. In response to a message indicating that the service provider unit uses an access mode of an extended service channel, whether information of the switch ratio is stored in service information of the user unit is searched in the user unit according to geographical information of the service provider unit. If the information of the switch ratio is stored in the service information of the user unit in the searching step, the user unit is set accordingly to enter the access mode of the extended service channel.