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

• US 7,454,236 B2
• Filed: 02/02/2007
• 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: Ito, Tadayoshi, Doi, Yoshuharu, Nakao, Seigo, Miyata, Takeo
• Primary Examiner(s): WASHINGTON, ERIKA ALISE
• Application Number:
  US11/670,743
• Publication Number:
  US 20070111758A1
• Time in Patent Office: 655 Days
• Field of Search: 455/561, 455/561.2, 455/101, 455/63.4
• 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 communication method comprising the steps of:

receiving a connection request from a radio terminal apparatus; and

transmitting frames to the radio terminal apparatus, each of the frames including a single bit and data, wherein the single bit indicates a reception operation adapted to a transmission operation of a radio base station apparatus, and a value of the single bit is variable for different frames.

2. A communication method according to claim 1, wherein the connection request is received by a plurality of antennas, and the frames are transmitted by the plurality of antennas.

3. A communication method according to claim 1, wherein the frames are transmitted to the radio terminal apparatus configured to execute adaptive array reception.

4. A communication method comprising the steps of:

receiving from a radio terminal apparatus, information related to a reception operation corresponding to the radio terminal apparatus; and

transmitting frames to the radio terminal apparatus, each of the frames including a single bit and data, wherein the single bit indicates a reception operation adapted to a transmission operation of a radio base station apparatus, and a value of the single bit is variable for different frames.

5. A communication method according to claim 4, wherein the information is received by a plurality of antennas, and the frames are transmitted by the plurality of antennas.

6. A communication method according to claim 4, wherein the frames are transmitted to the radio terminal apparatus configured to execute adaptive array reception.