Wireless communication and wireless communication apparatus

• US 7,319,714 B2
• Filed: 05/19/2003
• Issued: 01/15/2008
• Est. Priority Date: 05/17/2002
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Sakata, Ren, Aoki, Tsuguhide, Tsurumi, Hiroshi, Sekine, Syuichi, Toshimitsu, Kiyoshi, Adachi, Tomoko, Obayashi, Shuichi, Serizawa, Mutsumu, Shoki, Hiroki
• Primary Examiner(s): Kim; Kevin
• Application Number:
  US10/440,115
• Publication Number:
  US 20030236069A1
• Time in Patent Office: 1,702 Days
• Field of Search: 375/267, 375/299, 375/347, 375/211
• US Class Current: 375/211
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A wireless communication system which transmits and receives a signal by using a plurality of wireless apparatuses, comprising: a first wireless apparatus group having a plurality of transmitting apparatuses, each transmitting a wireless signal based on a first control signal, said first wireless apparatus group forming a first ad-hoc network between said transmitting apparatuses; and a second wireless apparatus group having a plurality of destination apparatuses, each receiving the wireless signal transmitted from said first wireless apparatus group, said second wireless apparatus group transmitting and receiving the wireless signal received by said destination apparatuses based on a second control signal, and said second wireless apparatus group forming a second ad-hoc network between said destination apparatuses different from said first ad-hoc network.

Claims

1. A wireless communication system which transmits and receives a signal by using a plurality of wireless apparatuses, comprising:

a first wireless apparatus group having a plurality of transmitting apparatuses, each transmitting a wireless signal based on a first control signal, said first wireless apparatus group forming a first ad-hoc network between said transmitting apparatuses;

a second wireless apparatus group having a plurality of destination apparatuses, each receiving the wireless signal transmitted from said first wireless apparatus group, said second wireless apparatus group transmitting and receiving the wireless signal received by said destination apparatuses based on a second control signal, and said second wireless apparatus group forming a second ad-hoc network between said destination apparatuses different from said first ad-hoc network; and

a relay apparatus group having a plurality of relay apparatuses configured to receive the wireless signal transmitted from said first wireless apparatus group, and to transmit the received wireless signal, wherein

said second wireless apparatus group is configured to receive the wireless signal transmitted from said relay apparatus group based on said second control signal.

2. The wireless communication system according to claim 1,

wherein each of said transmitting apparatuses includes:

a modulator which modulates transmission information;

a control part which provides the transmission information in accordance with said first control signal to said modulator; and

an antenna which transmits the signal modulated by said modulator.

3. The wireless communication system according to claim 1,

wherein each of said destination apparatuses includes:

an antenna which receives the wireless signal;

a demodulator which demodulates the wireless signal received by said antenna; and

a control part which performs control to transmit the signal demodulated by said demodulator to the other destination apparatus, based on said second control signal.

4. The wireless communication system according to claim 1,

wherein said first wireless apparatus group has a certain transmitting apparatus which designates contents transmitted by said transmitting apparatuses, based on said first control signal;

and

said second wireless apparatus group has a certain destination apparatus which requests transmission of the wireless signal received by said destination apparatuses, based on said second control signal.

5. The wireless communication system according to claim 4,

wherein said certain transmitting apparatus has a control part which designates the wireless signal to be transmitted by the other transmitting apparatus by said first control signal;

and

said certain destination apparatus includes;

a reception part which receives the received information of the other destination apparatus transmitted by said other destination apparatus; and

a signal processor which combines the received information of said other destination apparatus received by said reception part.

6. The wireless communication system according to claim 1,

wherein said first control signal includes information relating to a transmission frequency, a transmission timing, and a transmission information sequence.

7. The wireless communication system according to claim 1,

wherein said second control signal includes information relating to path condition and received information sequence.

8. The wireless communication system according to claim 1,

wherein said relay apparatuses includes:

a first reception part which receives the wireless signal transmitted from said first wireless apparatus group;

a demodulator which demodulates the wireless signal received by said reception part;

a first transmission part which broadcasts the demodulation signal demodulated by said demodulator to said relay apparatus group;

a second reception part which receives the signal broadcasted from said first transmission part of the other relay apparatus;

a transmission control part which sets transmission frequency, transmission frequency, transmission timing and transmission information sequence when the signal received by said second reception part is transmitted to said second wireless apparatus group; and

a second transmission part which transmits the signal received by said second reception part to said second wireless apparatus group based on contents set by said transmission control part.

9. A wireless communication system, comprising:

a first wireless apparatus having at least one antenna, which transmits a wireless signal by said antenna;

a relay apparatus group having a plurality of relay apparatuses each receiving the wireless signal from said first wireless apparatus, and transmitting the received signal; and

a second wireless apparatus having at least one antenna, which receives the wireless signal transmitted from said relay apparatuses, wherein

said relay apparatus group includes;

a plurality of first relay apparatus configured to receive the wireless signal transmitted from said first wireless apparatus, and to transmit the received wireless signal; and

a second relay apparatus configured to receive the wireless signal transmitted from two or more of said first relay apparatuses, and to transmit the received wireless signal, wherein

said second wireless apparatus configured to receive the wireless signal transmitted from at least one of said first and second relay apparatuses.

10. The wireless communication system according to claim 9,

wherein said first wireless apparatus has a plurality of antennas which transmit the wireless signal;

and

each of said relay apparatuses has a single antenna, receives the wireless signal transmitted by the antennas, and transmits the received signal, respectively.

11. The wireless communication system according to claim 9, wherein said first wireless apparatus has a plurality of antennas which transmit the wireless signals;

and

said second wireless apparatus has a plurality of antennas which receives the wireless signals.

12. The wireless communication system according to claim 11, comprising:

a relay apparatus group which receives the wireless signal transmitted from said antennas of said first wireless apparatus based on a control signal, and disperses and transmits the received wireless signal,

wherein said antennas of said second wireless apparatus receive the wireless signal transmitted from said relay apparatus group.

13. The wireless communication system according to claim 9,

wherein said first wireless apparatus, said first relay apparatuses, said second relay apparatus and said second wireless apparatus have single antennas, respectively.

14. A wireless communication apparatus, comprising:

a first reception part configured to receive a wireless signal transmitted from a first wireless apparatus group;

a demodulator configured to demodulate the wireless signal received by said first reception part;

a first transmission part configured to broadcast a demodulation signal demodulated by said demodulator to relay apparatuses;

a second reception part configured to receive a signal broadcasted from the other relay apparatus;

a transmission control part configured to set transmission frequency, transmission timing and transmission information sequence when the signal received by said second reception part is transmitted to a second wireless apparatus group; and

a second transmission part configured to transmit the signal received by said second reception part to said second wireless apparatus group based on contents set by said transmission control part, wherein

the first wireless apparatus group has a plurality of transmitting apparatuses, each configured to transmit a wireless signal based on a first control signal, said first wireless apparatus group forming a first ad-hoc network between said transmitting apparatuses; and

the second wireless apparatus group has a plurality of destination apparatuses, each configured to receive the wireless signal transmitted from said first wireless apparatus group, said second wireless apparatus group configured to transmit and receive the wireless signal received by said destination apparatuses based on a second control signal, and said second wireless apparatus group forming a second ad-hoc network between said destination apparatuses different from said first ad-hoc network.