US Patent No. 10,251,181

METHODS AND APPARATUSES FOR BUFFER STATUS REPORTING FOR DEVICE-TO-DEVICE COMMUNICATIONS


Patent No. 10,251,181
Issue Date April 02, 2019
Title Methods And Apparatuses For Buffer Status Reporting For Device-to-device Communications
Inventorship Xinghua Song, Beijing (CN)
Shaohua Li, Beijing (CN)
Qianxi Lu, Beijing (CN)
Stefano Sorrentino, Solna (SE)
Assignee Telefonaktoebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,251,181

1. A method for a first device-to-device capable user equipment, D2DUE, for buffer status reporting, the method comprising:determining an amount of data in a buffer of the first D2DUE to be transmitted to a second D2DUE in addition to an amount of data previously transmitted to the second D2DUE but unacknowledged by the second D2DUE;
transmitting a buffer status report to a scheduler of a network node, the buffer status report comprising information including the determined amounts; and
receiving a scheduling assignment from the network node for transmission of the unacknowledged data and the data in the buffer to the second D2DUE via a direct link between the first D2DUE and the second D2DUE.