RADIO BASE STATION APPARATUS, RADIO TERMINAL APPARATUS, MOBILE COMMUNICATION SYSTEM, AND RECEPTION OPERATION CONTROL PROGRAM

• US 20070111761A1
• Filed: 02/02/2007
• Published: 05/17/2007
• Est. Priority Date: 08/06/2001
• Status: Active Grant

• Current Assignee: Hera Wireless S.A. (Fineur International S.A.)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Miyata, Takeo, DOI, Yoshiharu, NAKAO, Seigo, ITO, Tadayoshi
• Granted Patent: US 7,454,235 B2
• Time in Patent Office: Days
• US Class Current: 455/562.100
• 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 DSP (12, 14) and the like.

Claims

1. A communication method, comprising the steps of:

receiving a connection request from a radio terminal apparatus; and

transmitting to the radio terminal apparatus whose connection request has been accepted by the receiver, a signal indicating a reception method suitable for directivity control type of transmission operation.

2. A communication method according to claim 1, wherein the receiving step includes receiving the connection request by a plurality of antennas, and the transmitting step includes transmitting the signal by the plurality of antennas.

3. A communication method according to claim 1, wherein the transmitting step includes transmitting the signal to the radio terminal apparatus configured to execute adaptive array reception.

4. A communication method comprising the steps of:

receiving a connection request from a radio terminal apparatus; and

transmitting to the radio terminal apparatus whose connection request has been accepted by the receiver, a signal indicating a reception method suitable for weighted directivity control type of transmission operation.

5. A communication method according to claim 4, wherein the receiving step includes receiving the connection request by a plurality of antennas, and the transmitting step includes transmitting the signal by the plurality of antennas.

6. A communication method according to claim 4, wherein the transmitting step includes transmitting the signal to the radio terminal apparatus configured to execute adaptive array reception.

7. 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 to the radio terminal apparatus, a signal indicating a reception operation adapted to weighted directivity control type of transmission operation of the radio base station apparatus.

8. A communication method according to claim 7, wherein the receiving step includes receiving the information by a plurality of antennas, and the transmitting step includes transmitting the signal by the plurality of antennas.

9. A communication method according to claim 7, wherein the transmitting step includes transmitting the signal to the radio terminal apparatus configured to execute adaptive array reception.