Repeater for radio communication system

• US 20030211827A1
• Filed: 04/29/2003
• Published: 11/13/2003
• Est. Priority Date: 05/07/2002
• Status: Abandoned Application

• Current Assignee: KDDI Corporation
• Original Assignee: KDDI Corporation
• Inventors: Lu, Feng, Ishikawa, Hiroyasu, Kunisawa, Yoshio, Shinonaga, Hideyuki, Yonezawa, Kenya
• Application Number:
  US10/425,265
• Publication Number:
  US 20030211827A1
• Time in Patent Office: Days
• US Class Current: 455/7
• CPC Class Codes: H04B 7/15507 Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04

Abstract

The invention offers a repeater for radio communication system for eliminating a blind zone in a closed space in the radio communication system, which transmits information between a base station and a mobile station over a radio transmission medium. The repeater comprises a base station-directed unit equipped with a function of transmitting a radio signal to and receiving a radio signal from said base station, and a mobile station-directed unit equipped with a function of transmitting a radio signal to and receiving a radio signal from said mobile station. The base station-directed unit and the mobile station-directed unit are connected via a radio transmission medium over which an electromagnetic wave signal is transmitted.

Claims

1. A repeater for radio communication system for eliminating a blind zone in a closed space in the radio communication system, which transmits information between a base station and a mobile station over a radio transmission medium,

said repeater comprising:

a base station-directed unit equipped with a function of transmitting a radio signal to and receiving a radio signal from said base station, and

a mobile station-directed unit equipped with a function of transmitting a radio signal to and receiving a radio signal from said mobile station,

said base station-directed unit and said mobile station-directed unit being connected via a radio transmission medium over which an electromagnetic wave signal is transmitted.

2. A repeater of claim 1, in which said radio transmission medium between said base station-directed unit and said mobile station-directed unit is so formed as to transmit said electromagnetic wave signal by the use of a communication channel different from a communication channel employed by a radio communication system, to which said repeater is provided for.

3. A repeater of claim 1, in which said radio transmission medium between said base station-directed unit and said mobile station-directed unit is so formed as to transmit said electromagnetic wave signal by use of a radio channel of a communication system different from a radio communication channel, to which said repeater is provided for.

4. A repeater of claim 1, in which said radio transmission medium between said base station-directed unit and said mobile station-directed unit is so formed as to transmit said electromagnetic wave signal by a signal path which uses an infrared-ray medium.

5. A repeater of claim 1, in which said radio transmission medium between said base station-directed unit and said mobile station-directed unit is so formed as to transmit said electromagnetic wave signal by a signal path which uses an optical wireless medium.