Radio communication terminal unit and method of transmitting base station identification number

• US 20060166680A1
• Filed: 03/27/2006
• Published: 07/27/2006
• Est. Priority Date: 07/26/2001
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: DENSO Corporation
• Inventors: Hayashida, Atsushi, Shintai, Tatsuya
• Granted Patent: US 7,463,895 B2
• Time in Patent Office: Days
• US Class Current: 455/456.100
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A cellular phone unit, upon turning from a standby mode to a data communication mode, responds to a user'"'"'s instruction of location positioning to turn from the data communication mode to the dormant mode, receives again base station identification numbers from several base stations through a paging channel, and designates again one of the base stations with the received identification numbers as the base station of primary communication with the phone unit. The phone unit can send the identification number of the proper base station of primary communication to a location information server even in case the phone unit is instructed by the user to commence the location positioning after it has moved from the location where it had commenced the data communication.

Claims

1. A method of transmitting a base station identification number from a radio communication terminal unit to a location information server, the method comprising steps of:

sending a terminal unit identification number of the terminal unit, which is received from the terminal unit, to a base station control facility; and

sending the base station identification number of a base station of primary communication with the terminal unit to the location information server in accordance with the terminal unit identification number received from the terminal unit.