Method and computer program for use in locating wireless base stations in a mobile communications system

• US 7,552,034 B2
• Filed: 06/20/2003
• Issued: 06/23/2009
• Est. Priority Date: 06/20/2002
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Furukawa, Hiroshi, Ebata, Koichi
• Primary Examiner(s): PHAN, THAI Q
• Application Number:
  US10/465,605
• Publication Number:
  US 20030236092A1
• Time in Patent Office: 2,195 Days
• Field of Search: 703/2, 703/13, 703/17, 703/19, 455/431, 455/446, 342/357.09, 340/572.1, 370/238
• US Class Current: 703/2
• CPC Class Codes: H04W 16/18 Network planning tools

Abstract

When locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the heights of directional antennas to be installed at the base stations are determined so as to be different, which base stations are adjacent with each other in a given inter-cell wireless relay route.

Claims

1. A method of locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the method comprising:

determining heights of directional antennas to be installed at adjacent base stations in a given inter-cell wireless relay route;

whereby the height of each directional antenna differs from that installed at an adjacent base station in the given inter-cell wireless relay route;

wherein the directional antenna at a given base station is tilted so as to face a directional antenna to be installed at an adjacent base station.

2. The method as claimed in claim 1, wherein a computer is used to determine the heights of the directional antennas.

3. A method of locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the method comprising:

(a) determining a number of base stations and location thereof in the mobile communications system;

(b) determining one or more inter-cell wireless relay routes in the mobile communications system; and

(c) determining heights of directional antennas to be installed at adjacent base stations in a given inter-cell wireless relay route;

whereby the height of each directional antenna differs from that installed at an adjacent base station in the given inter-cell wireless relay route.

4. The method as claimed in claim 3, wherein the directional antenna at a given base station is tilted so as to face a directional antenna to be installed at an adjacent base station.

5. The method as claimed in claim 4, wherein if a mobile service area is changed due to the determination of the directional antenna heights at step (c), operations at steps (a) and (b) are repeated.

6. The method as claimed in claim 3, wherein if a mobile service area is changed due to the determination of the directional antenna heights at step (c), operations at steps (a) and (b) are repeated.

7. The method as claimed in claim 3, wherein the heights of the directional antennas are determined by using a computer.

8. In a simulation for locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the simulation comprising:

(a) determining a number of base stations and location thereof in the mobile communications system;

(b) determining one or more inter-cell wireless relay routes in the mobile communications system; and

(c) determining heights of directional antennas to be installed at adjacent base stations in a given inter-cell wireless relay route;

whereby the height of each directional antenna differs from that installed at an adjacent base station in the given inter-cell wireless relay route.

9. In the simulation as claimed in claim 8, wherein the heights of the directional antennas are determined by using a computer.

10. A computer program product in a computer readable media for use in locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the computer program product comprising:

instructions that, when executed on a computer, causes the computer to perform steps comprising;

determining heights of directional antennas to be installed at adjacent base stations in a given inter-cell wireless relay route;

whereby the height of each directional antenna differs from that installed at an adjacent base station in the given inter-cell wireless relay route; and

wherein the directional antenna at a given base station is tilted so as to face a directional antenna to be installed at an adjacent base station.

11. The computer program product as claimed in claim 10, wherein the heights of the directional antennas are determined by using a computer.

12. A computer program product in a computer readable media for use in locating base stations which are wirelessly coupled with each other and establish one or more inter-cell wireless relay routes in a mobile communications system, the computer program product comprising:

(a) instructions for determining a number of base stations and location thereof in the mobile communications system;

(b) instructions for determining one or more inter-cell wireless relay routes in the mobile communications system; and

(c) instructions for determining heights of directional antennas to be installed at adjacent base stations in a given inter-cell wireless relay route;

whereby the height of each directional antenna differs from that installed at an adjacent base station in the given inter-cell wireless relay route.

13. The computer program product as claimed in claim 12, wherein the directional antenna at a given base station is tilted so as to face a directional antenna to be installed at an adjacent base station.

14. The computer program product as claimed in claim 13, wherein if a mobile service area is changed due to the determination of the directional antenna heights at the instruction (c), operations at the instructions (a) and (b) are repeated.

15. The computer program product as claimed in claim 12, wherein if a mobile service area is changed due to the determination of the directional antenna heights at the instruction (c), operations at the instructions (a) and (b) are repeated.

16. The computer program product as claimed in claim 12, wherein the heights of the directional antennas are determined by using a computer.