Mobile communication system, mobile communication method, base station and mobile station
First Claim
Patent Images
1. A mobile communication system comprising:
- a plurality mobile station groups each comprising at least one mobile station; and
a base station communicating with said mobile station groups using a plurality of communication channel bands, wherein said base station monitors volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitors a level of interference with said adjacent communication channels from said given communication channel, changes a receive-system band-limiting characteristic in said given communication channel band in accordance with the volumes of communication or the level of interference and transmits information for changing a transmit-system band-limiting characteristic in said mobile station groups communicating in said given communication channel band, and said mobile station groups change the transmit-system band-limiting characteristic in accordance with the information and changes an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station.
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Abstract
A base station BS changes a receive-system band-limiting characteristic in a first communication channel band ΔF1 in accordance with volumes of communication in second and third communication channels ΔF2 and ΔF3. A first mobile station MS1 communicating in the first communication channel band ΔF1 is notified of the changed receive-system band-limiting characteristic. The first mobile station MS1 changes its transmit-system band-limiting characteristic in accordance with the changed receive-system band-limiting characteristic and also changes an operating point of a transmit-system power amplifier 105.
16 Citations
20 Claims
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1. A mobile communication system comprising:
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a plurality mobile station groups each comprising at least one mobile station; and
a base station communicating with said mobile station groups using a plurality of communication channel bands, wherein said base station monitors volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitors a level of interference with said adjacent communication channels from said given communication channel, changes a receive-system band-limiting characteristic in said given communication channel band in accordance with the volumes of communication or the level of interference and transmits information for changing a transmit-system band-limiting characteristic in said mobile station groups communicating in said given communication channel band, and said mobile station groups change the transmit-system band-limiting characteristic in accordance with the information and changes an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station. - View Dependent Claims (3, 5, 7)
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2. A mobile communication system comprising:
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a plurality mobile station groups each comprising at least one mobile station; and
a base station communicating with said mobile station groups using a plurality of communication channel bands, wherein said base station monitors volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitors a level of interference with said adjacent communication channels from said given communication channel, changes intervals between frequencies set up for said given communication channel and said adjacent communication channels, in accordance with volumes of communication or the level of interference, and transmits information for changing the intervals to said mobile station groups, said mobile station groups change the intervals in accordance with the information, and said mobile station groups using said given communication channel band change an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station. - View Dependent Claims (4, 6, 8)
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9. A mobile communication method in which communication is performed between a plurality mobile station groups each comprising at least one mobile station and a base station, using a plurality of communication channel bands, wherein
said base station monitors volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitors a level of interference with said adjacent communication channels from said given communication channel, changes a receive-system band-limiting characteristic in said given communication channel band in accordance with the volumes of communication or the level of interference and transmits information for changing a transmit-system band-limiting characteristic in said mobile station groups communicating in said given communication channel band, and said mobile station groups change the transmit-system band-limiting characteristic in accordance with the information and changes an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station.
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10. A mobile communication method in which communication is performed between a plurality mobile station groups each comprising at least one mobile station and a base station, using a plurality of communication channel bands, wherein
said base station monitors volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitors a level of interference with said adjacent communication channels from said given communication channel, changes intervals between frequencies set up for said given communication channel and said adjacent communication channels, in accordance with the volumes of communication or the level of interference, and transmits information for changing the intervals to said mobile station groups, said mobile station groups change the intervals in accordance with the information, and said mobile station groups using said given communication channel band change an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station.
- 13. A base station communicating with a plurality of mobile station groups using a plurality of communication channel bands, characterized by monitoring volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitoring a level of interference with said adjacent communication channels from said given communication channel, changing a receive-system band-limiting characteristic in said given communication channel band in accordance with the volumes of communication or the level of interference and transmitting information for changing a transmit-system band-limiting characteristic in said mobile station groups communicating in said given communication channel band.
- 14. A base station communicating with a plurality of mobile station groups using a plurality of communication channel bands, characterized by monitoring volumes of communication in communication channel bands adjacent to a given communication channel used in communication with said mobile station groups, or monitoring a level of interference with said adjacent communication channels from said given communication channel, changing intervals between frequencies set up for said given communication channel and said adjacent communication channels, in accordance with the volumes of communication or the level of interference, and transmitting information for changing the intervals to said mobile station groups.
- 17. A mobile station which constitutes each of a plurality of mobile station groups, each mobile station group comprising at least one mobile station, and which communicates with a base station using a plurality of communication channel bands, characterized by changing a transmit-system band-limiting characteristic in accordance with information transmitted by said base station to change the band-limiting characteristic of said mobile station groups communicating in a given communication channel band and changing an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station
- 18. A mobile station which constitutes each of a plurality of mobile station groups, each mobile station group comprising at least one mobile station, and which communicates with a base station using a plurality of communication channel bands, characterized by changing intervals between frequencies set up for said communication channel bands, in accordance with information transmitted from said base station to change the intervals, and, when said mobile station constitutes a mobile station group communicating in a given communication channel with said base station, changing an operating point of a transmit-system power amplifier for amplifying a data signal transmitted to said base station.
Specification