US 9,769,692 B2Granted

Dynamic spectrum management

AssigneeInterDigital Patent Holdings, Inc.

InventorsMartino M. Freda, Alpaslan Demir, Athmane Touag, Phillip L. Leithead, Amith V. Chincholi, Ramya Gopalan, Sowmya Gopalan, Jean-Louis Gauvreau

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Abstract

A wireless transmit/receive unit (WTRU) and a dynamic spectrum management (DSM) engine are described. The WTRU includes a transceiver, a radio frequency (RF) spectrum sensing unit and a processing unit. The transceiver transmits over a wireless link. The RF spectrum sensing unit measures information indicative of usage of a spectrum by other devices. The processing unit detects a change in performance of the wireless link, controls the transceiver to transmit a notification to a DSM engine indicating that the change in the performance of the wireless link was detected on a condition that the processing unit detects the change in performance of the wireless link, and receives a sensing task request for the WTRU to measure the information indicative of the usage of the spectrum by other devices based on the notification transmitted to the DSM engine indicating that the change in the performance of the wireless link was detected.

Claims20

Dependent claims

A dynamic spectrum management (DSM) engine comprising:

a transceiver configured to:
transmit a first sensing task request to at least two of a plurality of wireless transmit/receive units (WTRUs) requesting that the at least two of the plurality of WTRUs measure information indicative of usage of spectrum by other devices,
receive first sensing results from a first WTRU of the at least two of the plurality of WTRUs at a plurality of periodic intervals, and
receive second sensing results from a second WTRU of the at least two of the plurality of WTRUs at the plurality of periodic intervals,
wherein the first sensing results and the second sensing results indicate whether, at each of the plurality of periodic intervals, the spectrum is being used by the other devices at a time that the information was measured;
and
a processing unit configured to:
determine whether the first sensing results and the second sensing results indicate that the first WTRU and the second WTRU are uncorrelated,
wherein the first WTRU and the second WTRU are not simultaneously located in an interference area with respect to a third WTRU of the at least two of the plurality of WTRUs, and
select a subset of the at least two of the plurality of WTRUs to which to transmit a second sensing task request based on results of the determining,
wherein the subset comprises at least the first WTRU and the second WTRU, and
wherein the second sensing task request instructs each WTRU of the subset to perform a second sensing task for a plurality of channels.

9 more elements

A method implemented in a dynamic spectrum management (DSM) engine, the method comprising:

transmitting a first sensing task request to at least two of a plurality of wireless transmit/receive units (WTRUs) requesting that the at least two of the plurality of WTRUs measure information indicative of usage of spectrum by other devices;
receiving first sensing results from a first WTRU of the at least two of the plurality of WTRUs at a plurality of periodic intervals,
receiving second sensing results from a second WTRU of the at least two of the plurality of WTRUs at the plurality of periodic intervals,
wherein the first sensing results and the second sensing results indicate whether, at each of the plurality of periodic intervals, the spectrum is being used by the other devices at a time that the information was measured;
determining whether the first sensing results and the second sensing results indicate the first WTRU and the second WTRU are uncorrelated,
wherein the first WTRU and the second WTRU are not simultaneously located in an interference area with respect to a third WTRU of the at least two of the plurality of WTRUs;
and
selecting a subset of the at least two of the plurality of WTRUs to which to transmit a second sensing task request based on results of the determining,
wherein the subset comprises at least the first WTRU and the second WTRU, and
wherein the second sensing task request instructs each WTRU of the subset to perform a second sensing task for a plurality of channels.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/286,610Filed 1 Nov 2011 · us provisional application
Priority: 1 Nov 2010
Published: US 2012/0294168 A122 Nov 2012
Granted: 19 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04W 24/10
Supervisory, monitoring or testing arrangements: scheduling measurement reports ; Arrangements for measurement reports
H04B 1/0067
Adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges: with one or more circuit blocks…
H04W 72/00
Local resource management
H04W 72/0453
Based on the type of the allocated resource: resources in frequency domain, e.g. a carrier in FDMA

Family

Application61/408,808Us provisional application · filed 1 Nov 2010
Application61/410,712Us provisional application · filed 5 Nov 2010
Application61/423,419Us provisional application · filed 15 Dec 2010
US 2012/0294168 A1Pre-grant publication · published 22 Nov 2012
US 9,769,692 B2This patent

From the US filing history. Foreign family members aren’t listed.