US Patent No. 10,219,291

METHODS TO ENABLE SCHEDULING AND CONTROL OF DIRECT LINK COMMUNICATION IN CELLULAR COMMUNICATION SYSTEMS


Patent No. 10,219,291
Issue Date February 26, 2019
Title Methods To Enable Scheduling And Control Of Direct Link Communication In Cellular Communication Systems
Inventorship Ghyslain Pelletier, Laval (CA)
Diana Pani, Montreal (CA)
Benoit Pelletier, Montreal (CA)
Christopher R. Cave, Montreal (CA)
Paul Marinier, Brossard (CA)
Tao Deng, Roslyn, NY (US)
Gwenael Poitau, Montreal (CA)
Kiran K. Vanganuru, King of Prussia, PA (US)
Assignee InterDigital Patent Holdings, Inc., Wilmington, DE (US)

Claim of US Patent No. 10,219,291

1. A method for use by a first wireless transmit/receive unit (WTRU), the method comprising:transmitting a request for device-to-device (D2D) communication resources to an enhanced Node B (eNB), wherein the request includes a D2D buffer status report indicating a buffer size of at least one D2D logical channel;
receiving a D2D grant for a plurality of transmission time intervals (TTIs), wherein the D2D grant provides: a set of resources to be used for D2D transmissions, a resource hopping assignment and transmit power control (TPC) information;
determining scheduling assignment (SA) resources to transmit at least one SA, based on the received D2D grant, wherein the SA resources comprise a set of resource blocks;
determining D2D transmission parameters, wherein at least one of the determined D2D transmission parameters is determined based on at least the received D2D grant and another one of the determined D2D transmission parameters is a modulation and coding scheme (MCS) determined via a radio resource configuration (RRC) signal received from the eNB;
determining D2D data resources to transmit D2D data, based on the received D2D grant;
transmitting the at least one SA on the determined SA resources prior to transmitting the D2D data, wherein the SA includes the determined D2D transmission parameters; and
transmitting, to a second WTRU, the D2D data on the determined D2D data resources indicated in the SA in accordance with the received resource hopping assignment, received TPC information and determined D2D transmission parameters.