초록 ▼

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell inclu

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell includes a base station having a transmitter for transmitting a particular cell signal having parameters including a transmitting frequency and a transmitting power. The particular cell signal is transmitted to cover a portion of the cell region. Each of the base stations includes a parameter detector for detecting the other parameters of the other cell signals from the other cells in the cellular region. A parameter controller controls the particular parameters for the particular cell. The parameters for the particular cell are based upon the other parameters for the other cell signals so that the particular cell signal does not interfere with the other cell signals in the cellular region.

대표청구항 ▼

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell inclu

A communications system extending over a cellular region and formed of a plurality of wireless cells. The communications system extends over a cellular region formed of a plurality of wireless cells. Each cell covers an area which includes a portion of the cellular region. Each particular cell includes a base station having a transmitter for transmitting a particular cell signal having parameters including a transmitting frequency and a transmitting power. The particular cell signal is transmitted to cover a portion of the cell region. Each of the base stations includes a parameter detector for detecting the other parameters of the other cell signals from the other cells in the cellular region. A parameter controller controls the particular parameters for the particular cell. The parameters for the particular cell are based upon the other parameters for the other cell signals so that the particular cell signal does not interfere with the other cell signals in the cellular region. ightly welding said thin end section with said metal container.2. The method for making magnetrons as described in claim 1, wherein an outer perimeter of said metal container is bent inward to form an outer perimeter bend, covering a substantial section of end portions of said magnetic piece.3. The method for making magnetrons as described in claim 2, wherein said predetermined number of projections are formed after said metal piece and said metal container have been installed by using a projection tool disposed outside said thin end section of said anode cylinder.4. The method for making magnetrons as described in claim 3, wherein said predetermined number of projections are inserted into a predetermined number of holes disposed on said outer perimeter bend of said metal container.5. The method for making magnetrons as described in claim 2, wherein: said predetermined number of projections are fanned before said metal container is installed; and loosely securing said metal container by pushing said outer perimeter bend of said metal container into said predetermined number of projections. 6. The method for making magnetrons as described in claim 5, wherein said predetermined number of projections are inserted into a predetermined number of holes disposed on said outer perimeter bend of said metal container.7. The method for making magnetrons as described in claim 2, wherein said predetermined number of projections are inserted into a predetermined number of holes disposed on said outer perimeter bend of said metal container.8. The method for making magnetrons as described in claim 2, wherein an end surface of said thin end section formed as a projection is formed lower than an upper surface of said metal container.9. The method for making magnetrons as described in claim 8, wherein said predetermined number of projections are inserted into a predetermined number of holes disposed on said outer perimeter bend of said metal container.10. A method for making magnetrons including, said magnetrons comprising: an anode cylinder; a plurality of vanes arranged radially within said anode cylinder; a magnetic piece disposed at an open end section of said anode cylinder; an anode vacuum container including a metal container disposed to cover an upper surface of said magnetic piece; a cathode disposed along a central axis of said vacuum container; and an antenna externally discharging microwaves; said method having steps comprising: placing said magnetic piece and said metal container, in that order, on a shelf formed inwardly on a thin end section projecting from said open end section of said anode cylinder; andforming a substantially ring-shaped projection, projecting inwardly from said thin end section of said anode cylinder, whereby said metal container is loosely secured; andtightly welding said thin end section with said metal container.11. The method for making magnetrons as described in claim 10, wherein an outer perimeter of said metal container is bent inward to form an outer perimeter bend, covering a substantial section of end portions of said magnetic piece.12. The method for making magnetrons as described in claim 11, wherein said ring-shaped projection is formed after said magnetic piece and said metal container have been installed by using a projection tool disposed outside said thin end section of said anode cylinder.13. The method for making magnetrons as described in claim 12, wherein an end surface of said thin end section formed as a projection is formed lower than an upper surface of said metal container.14. The method for making magnetrons as described in claim 11, wherein an end surface of said thin end section formed as a projection is formed lower than an upper surface of said metal container.15. The method for making magnetrons as described in claim 11, wherein: said ring-shaped projections is formed before said metal container is installed; and loosely securing said metal containe r by pushing said outer perimeter bend of said metal container into said ring-shaped projection. 16. The method for making magnetrons as described in claim 15, wherein an end surface of said thin end section formed as a projection is formed lower than an upper surface of said metal container.17. A method for making a magnetron wherein said magnetron comprises: an anode cylinder; a plurality of vanes arranged radially within said anode cylinder; a magnetic piece disposed at an open end section of said anode cylinder; an anode vacuum container, including a metal container covering an upper surface of said magnetic piece; a cathode disposed along a central axis of said vacuum container; and an antenna externally discharging microwaves; said method having steps comprising: bending inward an outer perimeter of said metal container to form an outer perimeter bend for covering a substantial section of end portions of said magnetic piece;placing said magnetic piece and said metal container, in that order, on a shelf formed inwardly on a thin end section projecting from said open end section of said anode cylinder;forming a predetermined number of projections projecting inwardly from said thin end section of said anode cylinder before said metal container is installed;loosely securing said metal container by pushing said outer perimeter bend of said metal container into said predetermined number of projections; andtightly welding said thin end section with said metal container.18. A method for making magnetrons including, said magnetrons comprising: an anode cylinder; a plurality of vanes arranged radially within said anode cylinder; a magnetic piece disposed at an open end section of said anode cylinder; an anode vacuum container including a metal container disposed to cover an upper surface of said magnetic piece; a cathode disposed along a central axis of said vacuum container; and an antenna externally discharging microwaves; said method having steps comprising: bending inward an outer perimeter of said metal container to form an outer perimeter bend for covering a substantial section of end portions of said magnetic piece;placing said magnetic piece and said metal container, in that order, on a shelf formed inwardly on a thin end section projecting from said open end section of said anode cylinder; andforming a substantially ring-shaped projection before said metal container is installed, projecting inwardly from said thin end section of said anode cylinder;loosely securing said metal container by pushing said outer perimeter bend of said metal container into said ring-shaped projection; andtightly welding said thin end section with said metal container. rsion liquid. nted circuit board.29. T