Point-to-multipoint wireless access system

• US 20020045459A1
• Filed: 10/12/2001
• Published: 04/18/2002
• Est. Priority Date: 10/13/2000
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Morikawa, Yutaka
• Application Number:
  US09/975,021
• Publication Number:
  US 20020045459A1
• Time in Patent Office: Days
• US Class Current: 455/517
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A point-to-multipoint wireless access system includes a wireless base station and a plurality of wireless subscriber'"'"'s terminals, wherein the down-link channels from the base station to the respective subscriber'"'"'s terminals use a higher frequency band, and the up-link channels from the respective subscriber'"'"'s terminals to the base station use a lower frequency band which is exempt of license.

Claims

1. A point-to-multipoint wireless access system comprising a wireless base station, a plurality of wireless subscriber'"'"'s terminals, a plurality of down-link channels for transmitting data from said wireless base station to respective said wireless subscriber'"'"'s terminals, and a plurality of up-link channels for transmitting data from respective said wireless subscriber'"'"'s terminal to said wireless base station, wherein said down-link channels use a first wireless band and said up-link channels use a second wireless band.

2. The point-to-multipoint access system as defined in claim 1, wherein said wireless base station is connected to the internet through a communication network, each of said wireless subscriber'"'"'s terminals is connected to a user'"'"'s terminal through a user'"'"'s Ethernet, and said first wireless band is higher than said second wireless band.

4. The point-to-multipoint wireless access system as defined in claim 1, wherein said wireless base station has a gateway function, and each of said subscriber'"'"'s terminals is a wireless module connected to a data terminal.

5. The point-to-multipoint wireless access system as defined in claim 1, wherein said first wireless band is a sub-millimeter waveband or a millimeter waveband, and said second wireless band is a 2.4-GHz ISM band.

6. The point-to-multipoint wireless access system as defined in claim 5, wherein said sub-millimeter waveband or said millimeter waveband is one of 26-GHz, 28-GHz, 38-GHz and 42-GHz frequency bands.

7. The point-to-multipoint wireless access system as defined in claim 1, wherein said first wireless band is a 5.3-GHz frequency band, and said second wireless band is a 2.4-GHz ISM band.

8. The point-to-multipoint wireless access system as defined in claim 1, wherein said first wireless band is a 60-GHz frequency band, and said second wireless band is a 5-GHz frequency band.

9. The point-to-multipoint wireless access system as defined in claim 1, wherein said first wireless band is a sub-millimeter waveband or a millimeter waveband, and said up-channel uses an optical signal.

3. The point-to-multipoint wireless access system as defined in claim wherein said wireless base station is connected to the internet through a communication network, at least one of said wireless subscriber'"'"'s terminals is connected to a user server through an Ethernet, and said first wireless band is lower than said second wireless band.