Patent ID: 9402266
Filing Date: 2016-07-26
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A method for transmitting data from a first device in a Peer to Peer (P2P) communication system, the method comprising: waking up from a power saving mode, at a time point of an acknowledgement/negative acknowledgement (ACK/NACK) signal transmission in a first traffic slot, to transmit data in a second traffic slot which is a next traffic slot of the first traffic slot; receiving, from a receiving device, a broadcasted negative acknowledgement (NACK) signal in the first traffic slot, wherein the broadcasted NACK signal is for a data transmission from a second device to the receiving device; comparing priority levels between a P2P communication link of the second device and a P2P communication link of the first device, based upon a resource unit to which the NACK signal is broadcasted; and determining whether to transmit the data in the second traffic slot or to yield data transmission based upon the priority levels, wherein a resource area including a plurality of resource units for NACK signals is defined by one Orthogonal Frequency Division Multiplexing (OFDM) symbol and a plurality of successive tones, and wherein each of the plurality of resource units is allocated to each of a plurality of peer devices including the first device and the second device, in an order of priority levels of the peer devices.