Wireless Communication Apparatus and Wireless Communication Method

• US 20080273517A1
• Filed: 04/26/2006
• Published: 11/06/2008
• Est. Priority Date: 04/28/2005
• Status: Active Grant

• Current Assignee: Redwood Technologies, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Nishio, Akihiko, Yuda, Yasuaki
• Granted Patent: US 8,320,356 B2
• Time in Patent Office: Days
• US Class Current: 370/345
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 27/2626 Arrangements specific to the transmitter only
• CPC Class Codes: H04L 27/2647 Arrangements specific to the receiver only equalisation H04L27/01
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals

Abstract

The circuit scale of a wireless communication apparatus at the data receiving end in a wireless communication performing an adaptive control for each of subcarriers or subchannels can be reduced. In the present apparatus, frame forming parts (103-1 to 103-m) each multiplex a pilot, control information and transport data to form a frame for a respective one of subchannels (1 to m). A subcarrier assigning part (104) assigns subcarriers designated from an adaptive control part (114) to the respective frames formed by the frame forming parts (103-1 to 103-m). A timing control part (105) establishes mutually different frame timing offsets to the respective frames received from the subcarrier assigning part (104).

Claims

1. A wireless communication apparatus dividing a plurality of subcarriers forming a multicarrier signal into a plurality of subchannels and performing adaptive control per subchannel, the wireless communication apparatus comprising:

a timing setting section that sets different transmission timings for the plurality of subchannels; and

a transmitting section that transmits the multicarrier signal including the plurality of subchannels after the transmission timing setting.

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

a multiplexing section that multiplexes a pilot channel and a data channel upon each subchannel; and

a power setting section that sets a transmission power for the pilot channel greater than a transmission power for the data channel.

3. The wireless communication apparatus according to claim 1, further comprising:

a multiplexing section that multiplexes a control channel and a data channel upon each subchannel; and

a power setting section that sets a transmission power for the control channel greater than a transmission power for the data channel.

4. The wireless communication apparatus according to claim 1, wherein the timing setting section sets different transmission timings from transmission timings set by a wireless communication apparatus in a neighboring cell.

5. A wireless communication base station apparatus comprising the wireless communication apparatus according to claim 1.

6. A wireless communication mobile station apparatus comprising the wireless communication apparatus according to claim 1.

7. A wireless communication method of dividing a plurality of subcarriers forming a multicarrier signal into a plurality of subchannels and performing adaptive control per subchannel, the method comprising setting different timing offsets for a plurality of frames formed in the plurality of subchannels.