Patent ID: 9191828
Filing Date: 2015-11-17
Classification: H04B,H04L,H04N,H04W,Y02D

Abstract:
1. A user equipment (UE), comprising: physical layer circuitry arranged to communicate with an evolved Node B (eNodeB) using a 3GPP Long Term Evolution (LTE) or Long-Term Evolution-Advanced (LTE-A) network connection and to facilitate device-to-device communications with a receiving UE using a direct network connection; and media-access control (MAC) layer circuitry arranged to: send via physical layer (PHY) circuitry a request message to a receiving UE, during a resource contention window allocated from a device-to-device portion of an uplink segment of an LTE or LTE-A frame, the resource contention window allocated for scheduling device-to-device communications in a wireless channel using a random access contention channel access technique, the request message indicating a size for a data transmission; receive a response to the request message via the PHY layer circuitry from the receiving UE, the response confirming the request message and designating a transmission time for the data transmission, the designated transmission time determined by the receiving UE and occurring within a first portion of a scheduled transmission window of the device-to-device portion of the uplink segment, the scheduled transmission window allocated for conducting the device-to-device communications, and wherein other devices may transmit in a second portion of the scheduled transmission window; perform the data transmission with the receiving UE via the PHY layer circuitry, during the scheduled transmission window allocated for conducting the device-to-device communications, on the wireless channel at the designated transmission time; and refrain from transmitting during the second portion of the scheduled transmission window.