Mobile station unit and channel switching method

U.S. Patent Number: 5383221

Abstract: In a mobile radio system including at least one mobile station unit and a plurality of base station units, the mobile station unit communicates with a base station through time-division multiplexed control and communication channels. The mobile station unit includes a line quality detecting section for detecting the deterioration of the line quality occurring during communication, and a control section for controlling the entire unit. The control section includes a retrieval section which, when the deterioration of the line quality is detected by the line quality detecting section, interrupts current communication with a base station unit during a predetermined period, receives a control channel from another (new) base station unit during that period and then retrieves predetermined information, and a channel switching section which, when the predetermined information can be detected by the retrieval section, terminates the current communication with the base station and performs a process of connection to the new base station unit on the basis of the predetermined information.

Inventors: Akita; Yoshihiro (Tokyo, JP), Shirakawa; Masakazu (Kawasaki, JP)

Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP)

Application Number: 07/842,614

Issued: 1995-01-17

Expired: 2007-01-17

Classes: 375/219 ; 455/436; 455/525

Field of search: 375/7,107 455/33.1,54.1,54.2,33.2,56.1 379/60 370/95.1,95.3

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