Patent ID: 9042352
Filing Date: 2015-05-26
Classification: H04W

Abstract:
1. A method for data transmission in a local area network, the data being transmitted on a medium access control layer within successive time frames between a plurality of first nodes comprising client nodes and a second node within reach of the plurality of first nodes and a coordinator node for the plurality of first nodes, and a time frame comprising a plurality of time slots, the method comprising: assigning each of the plurality of time slots to a first node of the plurality of the first nodes which is a slot owner node being exclusively allowed to start transmitting data at a time within a first interval at a beginning of a time slot of the plurality of time slots; permitting one or more first nodes of the plurality of first nodes to use the time slot of the plurality of time slots using a contention based access to transmit the data in a second interval succeeding the first interval in cases in which a slot owner node has not started transmitting data at a time within the first interval; determining by the second node, at an end of the first interval whether the slot owner node has started transmitting data; broadcasting, by the second node, a permission message in the local area network, if the second node determines that the slot owner node has not started transmitting the data; and permitting each first node of the plurality of nodes to use the time slot of the plurality of times slot using the contention based access to transmit the date only after receiving the permission message from the second node.