RADIO COMMUNICATION BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD

• US 20090059854A1
• Filed: 01/12/2007
• Published: 03/05/2009
• Est. Priority Date: 01/13/2006
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Nishio, Akihiko, Suzuki, Hidetoshi, Yoshii, Isamu
• Application Number:
  US12/160,197
• Publication Number:
  US 20090059854A1
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04J 11/0069 Cell search, i.e. determining cell identity [cell-ID] design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

Provided is a base station capable of searching cells of different frequencies without losing a chance of data communication by effectively performing SCH data communication. The base station (100) includes: an encoding unit (101) for encoding SCH data; a modulation unit (102) for modulating the encoded SCH data; encoding units (103-1 to 103-N) for encoding user data (#1 to #N), modulation units (104-1 to 104-N) for modulating the encoded user data (#1 to #N); a frame format setting unit (105) for setting a frame format of each frame; and an IFFT unit (106) for mapping the SCH data and the user data (#1 to #N) to sub carriers (#1 to #K) and performing IFFT to generate an OFDM symbol. The frame format setting unit (105) changes the data communication sub frame for each frame so as to change the position of the data communication section within a frame for each frame.

Claims

1. A radio communication base station apparatus comprising:

a setting section that sets a frame format including a non-transmission period and a data communication period; and

a transmitting section that transmits data according to the frame format,

wherein the setting section changes the frame format over time.

2. The radio communication base station apparatus according to claim 1, wherein the setting section changes a position of the data communication period in a frame over time.

3. The radio communication base station apparatus according to claim 2, wherein the setting section changes a position of the non-transmission period in a frame over time and changes the position of the data communication period according to the change of the position of the non-transmission period.

4. The radio communication base station apparatus according to claim 1, wherein the setting section sets the non-transmission period in a position other than a position immediately before an uplink data communication period in a frame.

5. The radio communication base station apparatus according to claim 1, wherein the setting section periodically changes the frame format.

6. The radio communication base station apparatus according to claim 1, wherein the setting section changes the frame format every frame.

7. A radio communication method that sets a frame format including a non-transmission period and a data communication per iod, and that transmits data according to the frame format, the radio communication method comprising changing the frame format over time.