Wireless communication system, wireless communication terminal, and wireless communication method

• US 7,817,975 B2
• Filed: 04/10/2006
• Issued: 10/19/2010
• Est. Priority Date: 04/26/2005
• Status: Expired due to Fees

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Sunaga, Tohru
• Primary Examiner(s): LE, NHAN T
• Application Number:
  US11/401,430
• Publication Number:
  US 20060240792A1
• Time in Patent Office: 1,653 Days
• Field of Search: 455/74, 455/76, 455/150.1, 455/161.1, 455/165.1, 455255-260, 455/550.1, 455/552.1, 455/553.1
• US Class Current: 455/165.1
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04B 7/026 Co-operative diversity, e.g. using fixed or mobile stations as relays
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

A wireless communication system includes: a base station; a first wireless communication terminal that receives a first signal from the base station; and a second wireless communication terminal that receives a second signal from the base station. The first signal is to be used by the second wireless communication terminal. The first wireless communication terminal includes: a transmitting unit that transmits the first signal to the second wireless communication terminal. The second wireless communication terminal includes: a receiving unit that receives the first signal from the first wireless communication terminal; and a signal synthesizing unit that receives the first signal from the receiving unit and performs at least one synthesis based on the first signal and the second signal.

Claims

1. A wireless communication terminal that communicates with a base station and a different wireless communication terminal, the wireless communication terminal comprising:

first and second antennas;

a base station communication unit that receives a first signal from the base station via the first antenna, the first signal to be used by the different wireless communication terminal; and

a transmitting unit that receives the first signal from the base station communication unit and directly transmits the first signal to the different wireless communication terminal via the second antenna, wherein,

the transmitting unit comprises a first detecting unit that detects a first radio frequency from a plurality of predetermined radio frequencies, the first radio frequency being not in use but available to the different wireless communication terminal, the transmitting unit transmitting the first signal at the first radio frequency to the different wireless communication terminal.

2. A wireless communication terminal that communicates with a base station and a different wireless communication terminal, the wireless communication terminal comprising:

first and second antennas;

a base station communication unit that receives a first signal from the base station via the first antenna;

a receiving unit that directly receives a second signal from the different wireless communication terminal via the second antenna, the second signal being not in use but available to the wireless communication terminal; and

a signal synthesizing unit that receives the second signal from the receiving unit and performs at least one synthesis based on the first signal and the second signal, wherein

the receiving unit comprises a first detecting unit that detects a first radio frequency, the receiving unit receiving the second signal at the first radio frequency from the different wireless communication terminal.