Base station and know sequence transmitting method

• US 20090197623A1
• Filed: 09/22/2008
• Published: 08/06/2009
• Est. Priority Date: 02/04/2008
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Oota, Yoshiyuki
• Application Number:
  US12/232,640
• Publication Number:
  US 20090197623A1
• Time in Patent Office: Days
• US Class Current: 455/509
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 16/30 Special cell shapes, e.g. doughnuts or ring cells
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A disclosed base station transmits data at the same frequency used by neighboring base stations during a first time period, and transmits data at a different frequency from those used by the neighboring base stations during a second time period. The base station includes an antenna; and a transmitting unit configured to transmit a first known sequence from the antenna during the first time period and transmit a second known sequence from the antenna during the second time period.

Claims

1. A base station for transmitting data at a same frequency used by neighboring base stations during a first time period, and transmitting data at a different frequency from frequencies used by the neighboring base stations during a second time period, the base station comprising:

an antenna; and

a transmitting unit configured to transmit a first known sequence from the antenna during the first time period and transmit a second known sequence from the antenna during the second time period.

2. The base station as claimed in claim 1, further comprising:

a receiving unit configured to receive a measurement result from a mobile station after the mobile station measures reception qualities of the first known sequence and the second known sequence.

3. The base station as claimed in claim 2, further comprising:

a control unit configured to determine either the first time period or the second time period as a time period during which the data are transmitted to the mobile station.

4. A known sequence transmission method used in a wireless communication apparatus that includes an antenna, and transmits data at a same frequency used by neighboring base stations during a first time period and transmits data at a different frequency from frequencies used by the neighboring base stations during a second time period, the known sequence transmission method comprising the steps of:

transmitting a first known sequence from the antenna during the first time period; and

transmitting a second known sequence from the antenna during the second time period.

5. The known sequence transmission method as claimed in claim 4, further comprising the step of:

receiving a measurement result from a mobile station after the mobile station measures reception qualities of the first known sequence and the second known sequence.

6. The known sequence transmission method as claimed in claim 5, further comprising the step of:

determining either the first time period or the second time period as a time period during which the data are transmitted to the mobile station.