RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD

• US 20100118751A1
• Filed: 11/19/2009
• Published: 05/13/2010
• Est. Priority Date: 05/25/2007
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Choraku, Tomohiko, Hirata, Shuya, Sugiyama, Jun
• Application Number:
  US12/621,968
• Publication Number:
  US 20100118751A1
• Time in Patent Office: Days
• US Class Current: 370/310
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 92/20 between access points

Abstract

A radio communication apparatus for performing radio communication, including: a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein a signal output from the common amplifier is transmitted.

Claims

1. A radio communication apparatus for performing radio communication, comprising:

a first interface conversion unit which extracts a first signal and a second signal multiplexed and input, and corresponding to two different formats, and combines the extracted first and second signal; and

a common amplifier which is shared by the first and second signal by amplifying the combined first and second signal, wherein

a signal output from the common amplifier is transmitted.

2. The radio communication apparatus according to claim 1, further comprising:

a second interface conversion unit which is connected with an other radio communication apparatus that processes a first format in the two different formats, and which input with the first signal from the other radio communication apparatus and the second signal corresponding to a second format in the two different formats, multiplexes the first signal and the second signal, and outputs, wherein

a signal output from the second interface conversion unit is input to the first interface conversion unit.

3. The radio communication apparatus according to claim 1, wherein

the first interface conversion unit is connected with an other radio communication apparatus that processes a first format in the two different formats, and outputs the first signal without combining the second signal with the first signal from the other radio communication apparatus, and

the common amplifier amplifying and outputs only the first signal.

4. The radio communication apparatus according to claim 2, wherein

the second interface conversion unit outputs the second signal to the other radio communication apparatus without multiplexing the second signal with the first signal, and

the first interface conversion unit is input with the first signal and the second signal multiplexed in the other radio communication.

5. The radio communication apparatus according to claim 1, wherein

the first interface conversion unit is directly connected with an other radio communication apparatus which processes a first format in the two different formats, and is also directly connected with a third interface conversion unit which processes a second format in the two different formats, and

the first interface conversion unit is input with the first signal and the second signal from the other radio communication apparatus and the third interface conversion unit, respectively, without the first and second signal being multiplexed, combines the first signal and the second signal, and outputs to the common amplifier.

6. The radio communication apparatus according to claim 2, wherein the second interface conversion unit frequency-converts the first and second signal on a time axis to the first and second signal on a frequency axis, combines the frequency-converted first and second signal by adding the frequency-converted first and second signal on the frequency axis, again converts the combined first and second signal to signal on the time axis, and outputs the first and second signal converted to signal on the time axis.

7. A radio communication system, comprising:

a first radio communication apparatus; and

a second radio communication apparatus, wherein

the first radio communication apparatus includes a first interface conversion unit which processes a first signal corresponding to a first format, and

the second radio communication apparatus includes;

a second interface conversion unit which is directly connected with the first interface conversion unit, and which is input with the first signal from the first interface conversion unit and a second signal corresponding to a second format, multiplexes the first signal and the second signal, and outputs;

a third interface conversion unit which is input with multiplexed signal from the second interface conversion unit, extracts the first and second signal, and combines the extracted first and second signal; and

a common amplifier which amplifies the first and second signals combined by the third interface conversion unit.

8. The radio communication system according to claim 7, wherein

the second interface conversion unit outputs the second signal to the first interface conversion unit without multiplexing the second signal with the first signal,

the second interface conversion unit multiplexes the second signal and the first signal, and

the third interface conversion unit is directly connected with the second interface conversion unit, and is input with the multiplexed first and second signal.

9. A radio communication method in a radio communication apparatus for performing radio communication, the method comprising:

extracting multiplexed input first and second signal corresponding to two different formats respectively;

combining the extracted first and second signal;

amplifying the combined first and second signal with a common amplifier; and

transmitting signal output from the common amplifier.

10. A radio communication method in a radio communication system including a first radio communication apparatus and a second radio communication apparatus, the method comprising:

inputting a first signal corresponding to a first format from the first radio communication apparatus and multiplexing the first signal with a second signal corresponding to a second format in the second radio communication system;

combining the extracted first and second signal; and

transmitting the combined first and second signal after amplifying the signal with a common amplifier of the second radio communication system.