Embodiments include processes, systems, and devices for reshaping virtual baseband signals for transmission on non-contiguous and variable portions of a physical baseband, such as a white space frequency band. In the transmission path, a spectrum virtualization layer maps a plurality of frequency components derived from a transmission symbol produced by a physical layer protocol to sub-carriers of the allocated physical frequency band. The spectrum virtualization layer then outputs a time-domain signal derived from the mapped frequency components. In the receive path, a time-domain signal received on the physical baseband is reshaped by the virtual spectrum layer in order to recompose a time-domain symbol in the virtual baseband.

Claims

19 · 3 independent · depth 4

19 granted claims

›1.independentA method, comprising:nmapping, by a spectrum virtualization module of a wireless device, a plurality of frequency components that are derived from a t…+8

›2.↳ 1The method of claim 1, further comprising:nperforming, by the spectrum virtualization module, an M-point fast Fourier transform on the transmission sy…d2+2

›5.↳ 1The method of claim 1, further comprising:nscaling, by a frequency scaling module of the wireless device, the one or more allocated physical frequency…d2+2

›8.↳ 1The method of claim 1, further comprising:nlow-pass filtering the transmission signal; anddecimating the transmission signal.d2

›9.↳ 1The method of claim 1, further comprising shifting frequencies of the one or more allocated physical frequency bands by an amount equal to a central f…d2

›10.independentA method, comprising:nreceiving, by a spectrum virtualization module of a wireless device, a receive signal from a radio front-end of the wireless dev…+3

›14.independentA wireless device, comprising:na processor;a radio front-end configured to wirelessly transmit and receive on a physical baseband;a protocol module ex…+5

›15.↳ 14The wireless device of claim 14, wherein the one or more portions of the physical baseband that are allocated for transmission include an aggregate tr…d2

›16.↳ 14The wireless device of claim 14, further comprising:na bandwidth scaling module configured to scale the one or more portions of the physical frequency…d2+1

›18.↳ 14The wireless device of claim 14, further comprising a sampling rate adjustment module configured to add zero-pad samples to the transmission signal, t…d2

›19.↳ 14The wireless device of claim 14, wherein the decomposition/recomposition module is further configured to perform N-point fast Fourier transform on a r…d2

Classifications

5 codes

IPC · International Patent Classification

Section H — Electricity

H04L12/28
H04L5/00
H04L27/26
H04L27/00
H04J1/16

Claim changes

Soon

Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

⤢ drag to zoom

USPTOApplicanthover for detail · click to open

Pendency

3.7 y

1,335 days filing → grant

Office actions

non-final + final

Responses

no RCE

Examiner

John Pezzlo

art unit 2465 · TC 2400

Law firm

Law firm · Log in to unlock

Citations: 267 back · 0 forward

See the full prosecution history — every USPTO and applicant action on this file, in order.

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20130121257 A1	16 May 2013

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Citations

See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.