Radio communication system
First Claim
1. A radio communication system comprising:
- a radio port for communicating with a fixed radio terminal and a mobile radio terminal that provide similar services in a service area by using a predetermined radio frequency which is multiplexed by time division into a plurality of radio channels;
said fixed radio terminal being stationarily set in said service area of said radio port and having first transmission/reception means for communicating with said radio port by using a one of the radio channels in the predetermined radio frequency which is permanently assigned in advance;
memory means for storing said radio channel assigned in advance to said fixed radio terminal;
notification means for providing information, including said radio channel stored in said memory means, said information being provided in said service area of said radio port through said radio port; and
said mobile radio terminal in said service area for communicating with said radio port by using a further one of the radio channels in the predetermined radio frequency not assigned to said fixed radio terminal on the basis of said information provided in said service area of said radio port.
1 Assignment
0 Petitions
Accused Products
Abstract
A radio communication system includes a radio port, a fixed radio terminal, a memory unit, a notification unit, and a mobile radio terminal. The radio port communicates in a service area by using a predetermined radio frequency which is multiplexed by time division into a plurality of radio channels. The fixed radio terminal is stationarily set in the service area of the radio port and has a first transmission/reception unit for communicating with the radio port by using a radio channel which is permanently assigned in advance. The memory unit stores the radio channel assigned in advance to the fixed radio terminal. The notification unit provides information, including channel information stored in the memory unit, in the service area of the radio port through the radio port. The mobile radio terminal communicates with the radio port by using a radio channel not assigned to the fixed radio terminal on the basis of the channel information provided in the service area of the radio port.
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Citations
8 Claims
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1. A radio communication system comprising:
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a radio port for communicating with a fixed radio terminal and a mobile radio terminal that provide similar services in a service area by using a predetermined radio frequency which is multiplexed by time division into a plurality of radio channels; said fixed radio terminal being stationarily set in said service area of said radio port and having first transmission/reception means for communicating with said radio port by using a one of the radio channels in the predetermined radio frequency which is permanently assigned in advance; memory means for storing said radio channel assigned in advance to said fixed radio terminal; notification means for providing information, including said radio channel stored in said memory means, said information being provided in said service area of said radio port through said radio port; and said mobile radio terminal in said service area for communicating with said radio port by using a further one of the radio channels in the predetermined radio frequency not assigned to said fixed radio terminal on the basis of said information provided in said service area of said radio port. - View Dependent Claims (2, 3, 4, 5)
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6. A radio communication system comprising:
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a radio port for communicating in a first service area by using a predetermined radio frequency which is multiplexed by time division into a plurality of radio channels; a fixed radio terminal stationarily set in said service area of said radio port and having first transmission/reception means for communicating with said radio port by using a one of the radio channels in the predetermined frequency which is permanently assigned in advance; memory means for storing said radio channel assigned in advance to said fixed radio terminal; notification means for providing information, including said radio channels stored in said memory means, said information being provided in said service area of said radio port through said radio port; a mobile radio terminal for communicating with said radio port by using a further one of the radio channels in the predetermined radio frequency not assigned to said fixed radio terminal on the basis of said information provided in said service area of said radio ports; wherein said fixed radio terminal further comprises second transmission/reception means for communicating with said mobile radio terminal when it is present in a predetermined repeater area of said fixed radio terminal by using a repeater radio frequency different from the predetermined radio frequency, said fixed radio terminal relaying transmission/reception information by said second transmission/reception means by using said first transmission/reception means and the radio channel assigned in advance to said fixed radio terminal, said mobile radio terminal for communicating with said radio port by using the repeater radio frequency only when said mobile radio terminal enters said repeater area of said fixed radio terminal and has a subscriber number that is the same as that of said mobile radio terminal, and said mobile radio terminal for communicating with said radio port by using the radio channel not assigned to said fixed radio terminal on the basis of the information provided by said notification means when said mobile radio terminal is outside said repeater area and inside said service area of said radio port. - View Dependent Claims (7, 8)
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Specification