WO2014189915A3

5G,4G

Title

COLLISION AVOIDANCE SCHEME FOR WIRELESS COMMUNICATIONS OVER UNLICENSED SPECTRUM

Application Number:

WO2014US38769

Publication Date:

19-03-2015

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

COLLISION AVOIDANCE SCHEME FOR WIRELESS COMMUNICATIONS OVER UNLICENSED SPECTRUM

Application Number:

WO2014US38769

Family ID:

51895690

Publication Country:

US

Publication Date:

19-03-2015

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 apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes performing clear channel assessment (CCA) to determine availability of an unlicensed spectrum transmitting a request-to-send (RTS) signal to a set of user equipments (UEs) using the unlicensed spectrum when a determination is made that the unlicensed spectrum is available and receiving in the unlicensed spectrum 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. A second method includes transmitting an RTS signal in an unlicensed spectrum or a V-RTS signal in a licensed spectrum addressed to a set of UEs and transmitting a CTS-to-self signal in the unlicensed spectrum along with the 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.

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