Controlling operation of mobile base station so as to avoid radio interference

• US 6,999,725 B2
• Filed: 06/28/2002
• Issued: 02/14/2006
• Est. Priority Date: 06/29/2001
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Ono, Takashi, Nitta, Kazumasa, Yoshimi, Masaaki, Matsuoka, Hisashi
• Primary Examiner(s): Nguyen, Lee
• Application Number:
  US10/183,453
• Publication Number:
  US 20030003874A1
• Time in Patent Office: 1,327 Days
• Field of Search: 455/11.1, 455/63.1, 455/63.3, 455/7, 455/9, 455/67.11, 455/67.13, 370/315, 370/320, 370/335, 370/342
• US Class Current: 455/63.1
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 84/005 Moving wireless networks

Abstract

A method of controlling an operation of a mobile base station that is linked to a mobile communication system via a wireless relay channel includes an information acquiring step of acquiring estimation-purpose base information for estimating a condition of radio interference between the mobile base station and one or more other base stations, the acquisition of the estimation-purpose base information being made by the mobile base station and involving measurement of a physical property responsive to a current position of the mobile base station, an estimation step of estimating the condition of radio interference based on the acquired estimation-purpose base information, and a control step of controlling an operation of the mobile base station based on the estimated condition of radio interference.

Claims

1. A method of controlling an operation of a mobile base station that is linked to a mobile communication system via a wireless relay channel, comprising:

an information acquiring step of acquiring estimation-purpose base information for estimating a condition of radio interference between said mobile base station and one or more other base stations, the acquisition of said estimation-purpose base information being made by said mobile base station and involving measurement of a physical property responsive to a current position of said mobile base station;

an estimation step of estimating the condition of radio interference based on the acquired estimation-purpose base information; and

a control step of controlling an operation of the mobile base station based on the estimated condition of radio interference, wherein

said information acquiring step measures the position of the mobile base station as said estimation-purpose base information, and said estimation step estimates the condition of radio interference by assessing a relative positional relationship between the measured position of the mobile base station and positions of the one or more other mobile stations.

2. The method as claimed in claim 1, wherein said control step makes the mobile base station stay in a standby state in response to the estimated condition of radio interference that indicates presence of radio interference.

3. The method as claimed in claim 1, further comprising a switching step of switching operation conditions of the mobile base station, wherein said control step controls the operation of the mobile base station according to an operation condition obtained by said switching step if said switching step obtains the operation condition that insures absence of radio interference.

4. The method as claimed in claim 1, wherein said estimation step is performed by said mobile base station.

5. The method as claimed in claim 1, wherein said estimation step is performed by a facility of the mobile communication system based on the estimation-purpose base information supplied from the mobile base station to said facility via a wireless relay channel.

6. The method as claimed in claim 5, wherein said control step makes said facility generate operation control information based on the estimated condition of radio interference estimated by said facility, and controls the operation of the mobile base station based on the operation control information transferred from said facility to the mobile base station via the wireless relay channel.

7. The method as claimed in claim 1, wherein the wireless relay channel includes a satellite relay channel.

8. A mobile base station to be linked to a mobile communication system via a wireless relay channel, comprising:

an information acquiring unit which acquires estimation-purpose base information for estimating a condition of radio interference between said mobile base station and one or more other base stations, the acquisition of said estimation-purpose base information involving measurements of a physical property responsive to a current position of said mobile base station;

an estimation unit which estimates the condition of radio interference based on the acquired estimation-purpose base information; and

a control unit which controls an operation of the mobile base station based on the estimated condition of radio interference;

wherein

said information acquiring unit measures the position of the mobile base station as said estimation-purpose base information, and said estimation unit estimates the condition of radio interference by assessing a relative positional relationship between the measured position of the mobile base station and positions of the one or more other mobile stations.

9. The mobile base station as claimed in claim 8 wherein said control unit makes the mobile base station stay in a standby state in response to the estimated condition of radio interference that indicates presence of radio interference.

10. The mobile base station as claimed in claim 9, wherein said estimation unit switches operation conditions of the mobile base station, wherein said control unit controls the operation of the mobile base station according to an operation condition obtained by said estimation unit if said estimation unit obtains the operation condition that insures absence of radio interference.

11. The mobile base station as claimed in claim 8, wherein the wireless relay channel includes a satellite relay channel.