Wireless device

• US 9,425,947 B2
• Filed: 03/28/2013
• Issued: 08/23/2016
• Est. Priority Date: 03/30/2012
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kannari, Hideyuki, Hara, Masanori
• Primary Examiner(s): WILLIAMS, JENEE LAUREN
• Application Number:
  US13/852,583
• Publication Number:
  US 20130258915A1
• Time in Patent Office: 1,244 Days
• Field of Search: 370/281
• US Class Current: 1/1
• CPC Class Codes: H04B 1/0057 using diplexing or multiplexing filters for selecting the desired band
• CPC Class Codes: H04L 5/06 the signals being represented by different frequencies combined with time-division multiplexing H04L5/26
• CPC Class Codes: H04L 5/143 for modulated signals H04L5/1469 takes precedence

Abstract

A wireless device includes an input/output port that receives a first transmission signal subjected to transmission processing by another wireless device, the first transmission signal being output from the another wireless device, the another wireless device using a second frequency band adjacent to a first frequency band used by the wireless device, a synthesis circuit that synthesizes the first transmission signal received via the port and a second transmission signal subjected to transmission processing by the wireless device and that outputs the synthesized signal via an antenna, and a splitting circuit that splitbranches a first reception signal of the first frequency band and a second reception signal of the second frequency band, the first and the second reception signals being included in a reception signal received via the antenna, the splitting circuit outputting a split reception signal of the second frequency band via the port to the other wireless device.

Claims

1. A wireless device comprising:

an input and output port configured to receive a second transmission signal which is subject to transmission processing by a second wireless device, the second wireless device being coupled to the wireless device via the input and output port and configured to use a second frequency band adjacent a first frequency band used by the wireless device, the second transmission signal being used for a second wireless communication based on a second wireless communication standard;

a synthesis circuit configured to synthesize the second transmission signal received via the input and output port from the second wireless device and a first transmission signal which is subject to transmission processing by the wireless device;

into a synthesized signal for transmission via an antenna associated with the wireless device, the first transmission signal being used for a first wireless communication based on a first wireless communication standard;

a splitting circuit configured to obtain a first reception signal of the first frequency band from a reception signal received via the antenna and a second reception signal of the second frequency band from the reception signal, the first reception signal and the second reception signal being included in the reception signal received via the antenna, the splitting circuit being configured to output the second reception signal of the second frequency band via the input and output port to the second wireless device.

2. The wireless device according to claim 1, further comprising a circulator circuit configured to:

send the second transmission signal received via the input/output port to the synthesis circuit, and

send the second reception signal of the second frequency band output from the splitting circuit, via the input and output port, to the second wireless device.

3. The wireless device according to claim 2, further comprising an attenuation circuit configured to:

receive the second transmission signal from the circulator circuit,

attenuate the second transmission signal from the circulator circuit, and

output the attenuated second transmission signal to the synthesis circuit.

4. The wireless device according to claim 1, wherein the first wireless communication standard is different from the second wireless communication standard.

5. The wireless device according to claim 4, wherein the first frequency band is configured to support the first wireless communication standard and the second wireless communication standard, and the second frequency band is configured to support the first wireless communication standard.

6. The wireless device according to claim 5, wherein the first wireless communication standard is Long Term Evolution (LTE), and the second wireless communication standard is Code Division Multiple Access (CDMA).

7. The wireless device according to claim 1, wherein:

the wireless device comprises a first radio equipment and the second wireless device comprises a second radio equipment;

the first radio equipment is configured to transfer the synthesized signal via the antenna to a terminal device; and

the first radio equipment is configured to receive the reception signal via the antenna from the terminal device.

8. The wireless device according to claim 7, wherein the first radio equipment is further configured to transfer the first reception signal to a base band device.

9. A method for wireless communications, comprising:

receiving, via an input and output port of a first apparatus, a second transmission signal from a second apparatus which is configured to use a second frequency band adjacent a first frequency band of the first apparatus, the second apparatus being coupled to the first apparatus via the input and output port of the first apparatus,

sending, via a circulator of the first apparatus, the second transmission signal to a synthesis circuit of the first apparatus,

combining, at the synthesis circuit of the first apparatus, the second transmission signal received via the input and output port of the first apparatus and a first transmission signal of the first apparatus to result in a synthesized signal; and

outputting the synthesized signal to an antenna for transmission.

10. The method for wireless communications according to claim 9, further comprising:

obtaining a first reception signal of the first frequency band from a reception signal received via the antenna;

obtaining a second reception signal of the second frequency band from the reception signal received via the antenna; and

outputting the second reception signal of the second frequency band, via the input and output port of the first apparatus, to the second apparatus.

11. The method for wireless communications according to claim 9, further comprising:

before combining the second transmission signal and the first transmission signal, attenuating the second transmission signal from the second apparatus.

12. A wireless device comprising:

an input and output port configured to receive a second transmission signal which is subject to transmission processing by a second wireless device, the second wireless device being coupled to the wireless device via the input and output port and configured to use a second frequency band adjacent a first frequency band used by the wireless device;

a synthesis circuit configured to synthesize the second transmission signal received via the input and output port from the second wireless device and a first transmission signal which is subject to transmission processing by the wireless device into a synthesized signal for transmission via an antenna associated with the wireless device to a remote wireless terminal on a wireless network;

a splitting circuit configured to obtain a first reception signal of the first frequency band from a reception signal received via the antenna and a second reception signal of the second frequency band from the reception signal, the first reception signal and the second reception signal being included in the reception signal received via the antenna, the splitting circuit being configured to output the second reception signal of the second frequency band via the input and output port to the second wireless device.