Distributed architecure wireless RF modem

• US 7,945,290 B2
• Filed: 12/21/2009
• Issued: 05/17/2011
• Est. Priority Date: 08/11/2000
• Status: Expired due to Term

• Current Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Original Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Inventors: Souissi, Slim Salah, Andrews, Michael Scott, Tam, Ambrose W. C., Adams, John Andrew
• Primary Examiner(s): Tran, Congvan
• Application Number:
  US12/643,983
• Publication Number:
  US 20110003617A1
• Time in Patent Office: 512 Days
• Field of Search: 455/334, 455/426, 455/557, 455/556.1, 455/556.2, 455/73, 455/550.1, 455518-519, 455/309, 455/521, 370/260, 370/270, 370/276, 340/572.1, 340/636.15, 340/7.54
• US Class Current: 455/557
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453

Abstract

The present invention provides for a wireless radio frequency (“RF”) modem that plugs into a host computer and shares a central processing unit and memory with the host computer, wherein principal modem functions are distributed between the modem and the host computer. In one embodiment, the modem performs RF conversion, and the host computer performs baseband processing and protocol stack control. In another embodiment, the modem performs RF conversion and baseband processing, and the host computer performs protocol stack control.

Claims

1. A wireless radio frequency (RF) modem constructed to cooperatively operate with a host computing device having a memory and a central processing unit (“

CPU”

) for executing a protocol stack software program stored in said memory, said RF modem comprising;

a baseband processing unit configured during a receive mode to convert a modulated baseband signal into a plurality of bits of data, such that said host computing device'"'"'s CPU operating under the control of said protocol stack software program is enabled to separate protocol data and true data from said bits of data said baseband processing unit further configured during said transmit mode to convert said plurality of bits of data including said protocol data and said true data into said modulated baseband signal; and

an interface coupled to said baseband processing unit and configured to physically couple said RF modem to said host computing device said interface feeding said bits of data from said baseband processing unit to said host computing device during said receive mode and for feeding said bits of data from said host computing device to said baseband processing unit during said transmit mode.

2. The RF modem of claim 1 wherein said RF modem has at least one predetermined operating characteristic and wherein said RF modem further comprises an RF identification unit (“

RFID”

) coupled to said interface, said RFID operative to generate an identification signal that identifies said at least one operating characteristic of said RF modem, said interface configured to feed said identification signal to said host computing device such that said host computing device is enabled to detect said identification signal and decode said at least one operating characteristic.