Patent ID: 9509453
Filing Date: 2016-11-29
CPC Classification: H04L,H04W

Claim Text:
1. A wireless communication system comprising a plurality of wireless devices operating without a separate infrastructure for coordinating between wireless devices, wherein at least one wireless device functions as a transmission node and at least one wireless device functions as a receiving node, wherein the transmission node comprises: a grouping unit grouping a plurality of wireless devices functioning as receiving nodes into a plurality of receiving groups; a transmission unit transmitting data frame directly to the receiving nodes, wherein the data frame is not transmitted to a separate infrastructure; and a receiving unit receiving ACKnowledge (ACK) against the data frame directly from the receiving node contained in each receiving group at the ACK transmission time point wherein the ACK is not transmitted to a separate infrastructure, which is decided not to be overlapped with other receiving groups according to each receiving group, a the timer manager,