CELL SELECTION METHOD AND MOBILE STATION

• US 20110077009A1
• Filed: 12/06/2010
• Published: 03/31/2011
• Est. Priority Date: 11/16/2007
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Iwamura, Mikio, Nakamura, Takehiro
• Application Number:
  US12/961,190
• Publication Number:
  US 20110077009A1
• Time in Patent Office: Days
• US Class Current: 455/436
• CPC Class Codes: H04W 48/06 based on traffic conditions
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 60/04 using triggered events

Abstract

A cell selection method includes steps of: (A) determining, at a mobile station (UE), whether or not a first CSG cell satisfies a predetermined condition, when using a first macro cell as a camped cell; and (B) changing, at the mobile station (UE), the camped cell from the first macro cell to a first CSG cell, when determined that the first CSG cell satisfies the predetermined condition.

Claims

1-22. -22. (canceled)

23. A cell selection method in which a mobile station selects a camped cell among a first cell using a first carrier frequency and a second cell using a second carrier frequency which is different from the first carrier frequency, the cell selection method comprising steps of:

changing, at the mobile station, the camped cell from the first cell to the second cell, when the first cell is used as the camped cell, when a priority level of the second cell is lower than a priority level of the first cell, when radio quality in the second cell satisfies predetermined radio quality, and when radio quality in the first cell does not satisfy predetermined radio quality.

24. A mobile station configured to select a camped cell among a first cell using a first carrier frequency and a second cell using a second carrier frequency which is different from the first carrier frequency, the mobile station comprising:

a cell selector unit configured to change the camped cell from the first general cell to the second specific cell, when the mobile station uses the first cell as the camped cell, when a priority level of the second cell is lower than a priority level of the first cell, when radio quality in the second cell satisfies predetermined radio quality, and when radio quality in the first cell does not satisfy predetermined radio quality.