Relay, and relaying method
First Claim
1. A relay station to be located in a communication channel between a first communication device and a second communication device, comprising:
- a first antenna;
a second antenna;
a transmitter circuit that converts a baseband signal into an RF signal to be transmitted;
a receiver circuit that extracts the baseband signal from the received RF signal;
a switching unit that switches between a first state in which said first antenna is connected to said transmitter circuit, and said second antenna is connected to said receiver circuit and a second state in which said first antenna is connected to said receiver circuit and said second antenna is connected to said transmitter circuit; and
a communication controlling unit that obtains the baseband signal derived from the RF signal received from either one of said first and second communication devices and then, after predetermined process is applied to communication data included in said baseband signal, said communication controlling unit transmits said communication data through said transmitter circuit to another communication device.
1 Assignment
0 Petitions
Accused Products
Abstract
According to one aspect of the present invention, a relay station including a first antenna, a second antenna, a transmitter circuit that converts a baseband signal into an RF signal to be transmitted, a receiver circuit that extracts the baseband signal from the received RF signal, a switching unit that switches between a first state in which the first antenna is connected to the receiver circuit, and the second antenna is connected to the receiver circuit, and a second state in which the first antenna is connected to the receiver circuit, and the second antenna is connected to the transmitter circuit, and a communication controlling unit that extracts the baseband signal created from the RF signal received from either one of the first or second communication devices and then, after a predetermined process is applied to the communication data contained in the baseband signal, the communication controlling unit transmits the communication data through the transmitter circuit to another communication device is provided.
17 Citations
34 Claims
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1. A relay station to be located in a communication channel between a first communication device and a second communication device, comprising:
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a first antenna; a second antenna; a transmitter circuit that converts a baseband signal into an RF signal to be transmitted; a receiver circuit that extracts the baseband signal from the received RF signal; a switching unit that switches between a first state in which said first antenna is connected to said transmitter circuit, and said second antenna is connected to said receiver circuit and a second state in which said first antenna is connected to said receiver circuit and said second antenna is connected to said transmitter circuit; and a communication controlling unit that obtains the baseband signal derived from the RF signal received from either one of said first and second communication devices and then, after predetermined process is applied to communication data included in said baseband signal, said communication controlling unit transmits said communication data through said transmitter circuit to another communication device. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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3. A relay station according to claim, wherein said communication controlling unit transmits data through said transmitter circuit while receiving data through said receiver circuit.
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19. A method for relaying, via a relay station, a signal exchanged between a first communication device and a second communication device that communicate using a Time Division Duplex (TDD) architecture, wherein:
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during a first downlink, said first communication device transmits a first RF signal to said relay station, and said relay station receives said first RF signal and extracts a first baseband signal contained in said first RF signal; during a first uplink after said first downlink, said second communication device transmits a second RF signal to said relay station, and said relay station receives said second RF signal and extracts a second baseband signal contained in said second RF signal; during a second downlink after said first uplink, said first communication device transmits a third RF signal to said relay station, and said relay station converts said first baseband signal into an RF signal to be transmitted and transmits the same to said second communication device, and also receives said third RF signal and extracts a third baseband signal contained in said third signal; and during a second uplink after said second downlink, said second communication device transmits a fourth RF signal to said relay station, and said relay station converts said second baseband signal into an RF signal to be transmitted and transmits the same to said first communication device, and also receives said fourth RF signal and extracts a fourth baseband signal contained in said fourth signal. - View Dependent Claims (20, 21)
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22. A relay station to be located in a communication channel between a first communication device and a second communication device, comprising:
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a first antenna; a second antenna; a transmitter circuit connected to either one of said first antenna or said second antenna, that converts a baseband signal into an RF signal to be transmitted; a receiver circuit connected to the other of said first antenna or said second antenna, that extracts said baseband signal from the received RF signal; a communication controlling unit that transmits data through said transmitter circuit while receiving said data through said receiver circuit; a first duplicating unit that splits the RF signal to be transmitted that is output by said transmitter circuit and duplicates said RF signal to be transmitted; and a first interference-eliminating unit that adjusts the amplitude and/or phase of said duplicated RF signal and deducts said adjusted RF signal from the RF signal that is input into said receiver circuit. - View Dependent Claims (23, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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24. A relay station to be located in a communication channel between a first communication device and a second communication device, comprising:
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a first antenna; a second antenna; a transmitter circuit connected to either one of said first antenna or said second antenna, that converts a baseband signal into a RF signal to be transmitted; a receiver circuit connected to the other of said first antenna or said second antenna, that extracts said baseband signal from received RF signal; a communication controlling unit that transmits data through said transmitter circuit while receiving said data through said receiver circuit; a second duplicating unit that splits a signal to be transmitted before being converted into an RF signal to be transmitted by said transmitter circuit and duplicates said signal to be transmitted; and a second interference-eliminating circuit that adjusts the strength and/or phase of said duplicated signal and, in said receiver circuit, deducts said adjusted signal from the received signal after being converted from the RF signal. - View Dependent Claims (25)
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Specification