Software-defined wireless communication device

• US 6,876,864 B1
• Filed: 03/15/2002
• Issued: 04/05/2005
• Est. Priority Date: 03/15/2001
• Status: Expired due to Fees

• Current Assignee: VANU Incorporated
• Original Assignee: VANU Incorporated
• Inventors: Chapin, John
• Primary Examiner(s): Kincaid, Lester G.
• Assistant Examiner(s): DOAN, PHUOC HUU
• Application Number:
  US10/099,731
• Time in Patent Office: 1,117 Days
• Field of Search: 455/418, 455/419, 455/420, 455/552.1, 455/509, 455/510, 455/550.1, 455/512, 375/259, 375/302, 375/320, 370/282, 324/322
• US Class Current: 455/509
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes

Abstract

A software-defined wireless communication device is disclosed that includes a hardware platform, which can be digital or analog, as well as platform software that manages the hardware profile and waveform software that manages the signal processing functions. The software-managed hardware profiles are decoupled from the signal processing functionality of the software. In this way, waveform software can be certified, for example for compliance with FCC emissions requirement, independently from the platform software and from the hardware on which the waveform software runs.

Claims

1. A software-defined wireless communications device comprising:

a hardware platform;

platform software that controls an operating characteristic of the hardware platform;

waveform software separate from the platform software, the waveform software including authorization tags comprising limit values certified for at least the hardware platform and the platform software, said limit values specifying operating parameters of the hardware platform when the waveform software is executed on the hardware platform.

2. The communication device of claim 1, wherein the limit values encoded in the authorization tags ensure that a RF emission from the communication device is below a specified limit when the waveform software is executed on the hardware platform.

3. The communication device of claim 1, wherein the authorization tags comprise limit values certified for a plurality of hardware platforms, and wherein the waveform software can be ported to another hardware platform included in the authorization tags once the waveform software has been authorized for execution on a first platform included in the authorization tags.

4. The communication device of claim 1, wherein in the event of a change in the hardware platform, the platform software is reauthorized by applying the authorization tags.

5. The communication device of claim 1, wherein the limit values include a power level, a modulation characteristic or a frequency range, or a combination thereof.

6. The communication device of claim 1, wherein the waveform software includes a waveform description and the platform software includes a signal processing library, and wherein the waveform software is executed if the signal processing library contains the waveform description.

7. The communication device of claim 6, wherein the waveform description is certified if the waveform description is not compatible with the signal processing library of the platform software.

8. The communication device of claim 1, wherein the platform software is executed on a processor or memory subsystem different from the waveform software.

9. The communication device of claim 1, wherein the hardware platform is selected from the group consisting of an analog wireless phone, a digital wireless phone, a cordless home phone, and a wireless data transmission device.

10. Method of certifying a software-defined wireless communications device, comprising:

validating a signal processing library residing in the software-defined wireless communications device;

connecting the signal processing library at run time to an application program that includes waveform descriptions;

enforcing limits on RF emission based on device-related authorization tags encoded with the waveform descriptions.

11. The method of claim 10, further including downloading additional waveforms descriptions that are compatible with the signal processing library.

12. The method of claim 10, wherein the limits on RF emission is at least one of a power level, a modulation characteristic and a frequency range.