Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2002-09-24
2008-11-04
Backer, Firmin (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S469000
Reexamination Certificate
active
07447163
ABSTRACT:
A radio communication device is tested by forwarding relevant signal characteristic data derived at the physical (PHY) layer to the media access control (MAC) layer for processing, analysis and feedback to the radio circuit to improve performance. The relevant signal characteristics are forwarded to the MAC within (appended to) a data packet. Thus, the relevant signal characteristic is forwarded to the MAC along an existing data path (a path originally designed to transfer the receive frame only, but now transfers the combined receive frame with the attached radio characteristic). The radio characteristic may be used for testing and/or tuning the radio circuit. In one embodiment, the radio characteristic is a frequency domain representation of a received signal. The radio is tuned based on a channel estimate derived from comparison of frequency domain representations of transmitted and received signals.
REFERENCES:
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patent: 2002/0110156 (2002-08-01), Ozluturk
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McFarland William J.
Thomson John S.
Atheros Communications Inc.
Backer Firmin
Bever, Hoffman & Harmes, LLP
Harms Jeanette S.
Murphy Rhonda
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