# US 7,613,151 B2 · Radio base station apparatus, radio terminal apparatus, mobile communication system, and reception operation control program

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- Number: US 7,613,151 B2
- Document ID: US7613151B2
- Status: Granted
- Kind: B2
- Application number: 11/892,709
- Filed: 2007-08-27
- Published: 2008-11-20
- Granted: 2009-11-03
- Earliest claimed: 2001-08-06
- Assignees: Sanyo Electric Co., Ltd.
- Inventors: Yoshiharu Doi; Seigo Nakao; Takeo Miyata; Tadayoshi Ito
- Web page: https://patentgrep.com/patent/US7613151B2

## CPC

- H04B 7/0617: {for beam forming}
- H04B 7/0848: {Joint weighting}
- H04B 7/086: {using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming}
- H04W 72/20: Control channels or signalling for resource management
- H04W 16/28: using beam steering
- H04W 72/02: Selection of wireless resources by user or terminal
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## 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

### Claim 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 (1) a single bit indicating a reception operation adapted to a transmission operation of the radio base station apparatus and (2) data are respectively contained in mutually different fields of the multiple-field frame.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.