Dynamic spectrum management
First Claim
1. 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, andreceive 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, andselect 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, andwherein the second sensing task request instructs each WTRU of the subset to perform a second sensing task for a plurality of channels.
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Accused Products
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.
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Citations
20 Claims
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1. A dynamic spectrum management (DSM) engine comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method implemented in a dynamic spectrum management (DSM) engine, the method comprising:
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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. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification