Adjacent carrier frequency interference avoiding method for cellular system, mobile station, and base station controller
First Claim
1. A cellular system comprising at least one base station and at least one mobile station, its adjacent carrier frequency interference avoiding method for use when the cellular system is located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
- said mobile station repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 between which and said mobile station a link is set and/or the received power of the carrier frequencies being used by said another cellular system;
assigning carrier frequencies that are not adjacent on the frequency axis to the carrier frequencies being used by said another cellular system to said mobile station according to the results of said measurement; and
changing the frequency of said measurement according to the results of said measurement.
1 Assignment
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Accused Products
Abstract
This mobile station comprises a circuit for repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 and/or the received power of the carrier frequencies being used by another cellular system, a circuit for reporting the result of measurement to the base station of 1, a circuit for changing the carrier frequencies for use in communication according to the notification from the base station of 1, and a circuit for changing the frequency of measurement.
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Citations
22 Claims
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1. A cellular system comprising at least one base station and at least one mobile station, its adjacent carrier frequency interference avoiding method for use when the cellular system is located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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said mobile station repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 between which and said mobile station a link is set and/or the received power of the carrier frequencies being used by said another cellular system;
assigning carrier frequencies that are not adjacent on the frequency axis to the carrier frequencies being used by said another cellular system to said mobile station according to the results of said measurement; and
changing the frequency of said measurement according to the results of said measurement. - View Dependent Claims (2, 3)
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4. A cellular system comprising at least one base station and at least one mobile station, its adjacent carrier frequency interference avoiding method for use when the cellular system is located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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said mobile station repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 between which and said mobile station a link is set and/or the received power of the carrier frequencies being used by said another cellular system;
updating the maximum power from said mobile station according to the results of said measurement; and
changing the frequency of said measurement according to the results of said measurement. - View Dependent Claims (5, 6)
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7. A mobile station in a cellular system which comprises at least one base station and at least one mobile station including the claimed mobile station, the mobile station constituting a cellular system located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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means for repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 and/or the received power of the carrier frequencies being used by said another cellular system;
means for reporting information on the results of said measurement to said base station of 1;
means for changing the carrier frequencies used for communication according to the notification from said base station of 1; and
means for changing the frequency of said measurement. - View Dependent Claims (8, 9, 10, 11)
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12. A mobile station in a cellular system which comprises at least one base station and at least one mobile station including the claimed mobile station, the mobile station constituting a cellular system located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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means for repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 and/or the received power of the carrier frequencies being used by said another cellular system;
means for changing the maximum transmitting power according to the results of measurement; and
means for changing the frequency of measurement. - View Dependent Claims (13, 14, 15, 16)
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17. A mobile station in a cellular system which comprises at least one base station and at least one mobile station including such mobile station, the mobile station constituting a cellular system located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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means for repeating measurement of the received power of the carrier frequencies being transmitted from the base station of 1 and/or the received power of the carrier frequencies being used by said another cellular system;
means for reporting information on the results of said measurement to said base station of 1; and
means for changing the maximum transmitting power according to the notification from said base station of 1; and
means for changing the frequency of said measurement. - View Dependent Claims (18, 19, 20, 21)
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22. A base station controller in a cellular system which comprises at least one base station and at least one mobile station, the mobile station being for use in a cellular system located in the service area of another cellular system which uses a frequency band adjacent on the frequency axis to the frequency band being used by the cellular system, comprising:
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means for receiving a notification of information from said mobile station concerning the received power at said mobile station of the carrier frequency being transmitting from a base station of 1 and/or the received power at said mobile station of the carrier frequency being used by another cellular system;
means for changing the measuring frequency for said received power at said mobile station according to the notification of information from said mobile station concerning the received power in said mobile station of the carrier frequency being transmitting from a base station of 1 and/or the received power in said mobile station of the carrier frequency being used by another cellular system; and
means for transmitting said measuring frequency to said mobile station.
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Specification