KR20160010481A

5G,4G

Title

CLEAR CHANNEL ASSESSMENT FOR DETERMINING AVAILABILITY OF NON LICENSED SPECTRUM FOR EXTENDING LTE CAPACITY

Application Number:

KR20157034030

Publication Date:

27-01-2016

Current Assignee:

QUALCOMM INC

Family ID:

51895690

Application Date:

20-05-2014

Declaring Company:

QUALCOMM INC

Publication Country:

US

Priority Date:

20-05-2013

View on Espacenet goto-link

Title

CLEAR CHANNEL ASSESSMENT FOR DETERMINING AVAILABILITY OF NON LICENSED SPECTRUM FOR EXTENDING LTE CAPACITY

Application Number:

KR20157034030

Family ID:

51895690

Publication Country:

US

Publication Date:

27-01-2016

Application Date:

20-05-2014

Priority Date:

20-05-2013

Current Assignee:

QUALCOMM INC

Declaring Company:

QUALCOMM INC

View on Espacenet goto-link

Abstract  Abstract

Methods and devices in which unlicensed spectrum is used for Long Term Evolution (LTE) communications are described. The first method comprises performing a clear channel assessment (CCA) to determine the availability of the unlicensed spectrum; Sending a request-to-send (RTS) signal to a set of user equipments (UEs) using an unlicensed spectrum when a determination is made that an unlicensed spectrum is available; And receiving a common clear-to-send (CTS) signal and an individual CTS signal from one or more of the UEs in response to the RTS signal in the unlicensed spectrum. The second method includes sending an RTS signal addressed to a set of UEs in an unlicensed spectrum or in a V-RTS signal in an authorized spectrum; And transmitting the CTS-to-self signal in the unlicensed spectrum, with transmission of the V-RTS signal.

Note:

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The information in grey was provided by the patent holder

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Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.

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