Fixed OFDM wireless MAN utilizing CPE having internal antenna

• US 20050171995A1
• Filed: 04/01/2005
• Published: 08/04/2005
• Est. Priority Date: 10/22/1999
• Status: Abandoned Application

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: NextNet Wireless, Inc. (Motorola Solutions, Inc.)
• Inventors: Dunn, J. Eric, Grindahl, Mervin L., Kelman, Vladimir Z., Froelich, Stuart A., Barnes, Keith W.
• Application Number:
  US11/097,040
• Publication Number:
  US 20050171995A1
• Time in Patent Office: Days
• US Class Current: 709/200
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 27/2657 Carrier synchronisation
• CPC Class Codes: H04L 27/2662 Symbol synchronisation
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/021 adapted for Wireless Local Loop operation
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A fixed wireless access system generally comprises a consumer premise equipment (CPE) unit, that is connected via an Ethernet interface to a personal computer or local area network, and a base station unit that is connected via an Ethernet interface to a network. As such, the CPE unit is preferably easily user-installed while the base station unit is preferably tower-mounted within a 1-5 mile range of the CPE unit. Both the CPE unit and base station unit preferably incorporate an integrated data transceiver/switch that enables a radio frequency air link operating in the 2.5-2.686 GHz range. Orthogonal frequency division multiplexing is used in the uplink and downlink transmissions between CPE units and base station units.

Claims

1. A wireless access system, comprising:

a plurality of base station units, wherein said base station units are arranged according to a cellular structure and wherein each of said plurality of base station units is connectable to a network; and

a customer premise equipment (CPE) unit, wherein said CPE unit communicates with said at least one of said plurality of base station units via radio frequency and is connectable to a host, wherein upon connection of said CPE unit to said host said CPE unit learns a high-level internet protocol address and a low-level physical address of said host by observing communication traffic of said host.

2. The system of claim 1, wherein said high-level internet protocol address comprises a level 3 address and wherein said low-level physical address comprises an Ethernet physical layer address.

3. The system of claim 2, wherein said base station unit creates and uses a table of said high-level internet protocol address and said low-level physical addresses for said CPE unit and said host.

4. The system of claim 3, wherein said base station unit only transmits a message to said CPE unit if said CPE unit is within said table of said base station unit.

5. The system of claim 3, wherein said base station unit is able to perform address resolution protocol (ARP) proxy on behalf of said host associated with said CPE unit.

6. The system of claim 5, wherein said ARP proxy of said base station unit operates to reduce radio frequency traffic.

7. The system of claim 1, wherein said communication traffic comprises an address request from said host to a connected network server and a response from said connected network server.

8. The system of claim 7, wherein said request and said response are implemented through dynamic host control protocol (DHCP).

9. The system of claim 1, wherein said CPE unit creates and uses a table of said high-level internet protocol addresses and said low-level physical addresses.

10. The system of claim 9, wherein said CPE unit transmits a message to said base station unit only if said message is directed to a host that is not listed within said table of said CPE unit.

11. The system of claim 1, wherein upon connection of said CPE unit to a host said base station unit learns a high-level internet protocol address and a low-level physical address of said CPE unit and said host by observing communication traffic.

12. The system of claim 1, wherein said radio frequency communication is in the 2.5-2.686 GHz range.