Radio base station apparatus, radio terminal apparatus, mobile communication system, and reception operation control program

• US 7,454,234 B2
• Filed: 03/15/2006
• Issued: 11/18/2008
• Est. Priority Date: 08/06/2001
• Status: Expired due to Term

• Current Assignee: Hera Wireless S.A. (Fineur International S.A.)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Nakao, Seigo, Miyata, Takeo, Ito, Tadayoshi, Doi, Yoshiharu
• Primary Examiner(s): WASHINGTON, ERIKA ALISE
• Application Number:
  US11/375,078
• Publication Number:
  US 20060154618A1
• Time in Patent Office: 979 Days
• Field of Search: None
• US Class Current: 455/561
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0848 Joint weighting
• CPC Class Codes: H04B 7/086 using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

In response to a connection request from a terminal, a base station provides a signal indicating a reception operation adapted to a transmission operation of the base station to the terminal. Based on the indicating signal, the terminal selects and performs the optimum reception operation. The terminal also provides its own reception operation information in advance to the base station. Based on the reception operation information, the base station transmits a reception operation indication to the terminal. These processes are realized with software by a DSP.

Claims

1. A radio base station apparatus for transmitting a multiple-field frame to a radio terminal apparatus, the radio base station apparatus comprising:

a receiver for receiving a connection request from the radio terminal apparatus; and

a transmitter for transmitting the multiple-field frame to the radio terminal apparatus which has sent the connection request wherein control information and first data are respectively contained in mutually different fields in the multiple-field frame, and the control information contains (1) single bit indicating a reception operation adapted to a transmission operation of the radio base station apparatus and (2) second data for communication control.

2. A radio base station apparatus according to claim 1, wherein the single bit has a first value specifying a first reception operation or a second value specifying a second reception operation, the single bit instructing the radio terminal apparatus to accept the multiple-field frame only in a prescribed manner determined by the first or second value and adapted to a corresponding transmission operation of the radio base station apparatus.

3. a radio base station apparatus according to claim 1, further comprising a plurality of antennas, wherein

said receiver is configured for receiving the connection request by the plurality of antennas, and

said transmitter is configured for transmitting the multiple-field frame by the plurality of antennas.

4. A radio base station apparatus for transmitting a multiple-field frame to a radio terminal apparatus, the radio base station apparatus comprising:

a receiver for receiving a connection request from the radio terminal apparatus; and

a transmitter for transmitting the multiple-field frame to the radio terminal apparatus which has sent the connection request wherein control information and first data are respectively contained in mutually different fields in the multiple-field frame, and the control information contains (1) a signal indicating a reception operation adapted to a transmission operation of the radio base station apparatus and (2) second data for communication control; and

wherein the signal is a bit having first and second bit values which specify first and second reception operations, respectively, one of the first and second bit values instructing the radio terminal apparatus to accept the multiple-field frame only in a prescribed manner determined by the one bit value and adapted to a corresponding transmission operation of the radio base station apparatus.