Patent ID: 8599809
Filing Date: 2013-12-03
Classification: H04W

Abstract:
1. A routing method for a sender for transmitting a packet in a wireless mesh network including the sender, a receiver, and a plurality of access points disposed between the sender and the receiver, the method comprising: determining available transmission paths between the sender and the receiver; calculating expected transmission values for the available transmission paths if there are two or more available transmission paths; and setting a transmission path having a minimum expected transmission value among the available transmission paths as an actual transmission path of the packet, wherein each of the expected transmission values is determined by a sum of expected transmission count values, an expected transmission count value being a reciprocal of multiplication of a forward transmission success rate and a backward transmission success rate of a communication link between two nodes disposed on an available transmission path, a node being the sender, the receiver, or an access point, and wherein, when a signal to interference plus noise ratio (SINR) value of a communication link in which a first access point transmits the packet is equal to or greater than a predetermined capture threshold, a second access point determines that the packet can be concurrently transmitted, and an expected transmission count value for a communication link in which the second access point transmits the packet is multiplied by a constant value smaller than 1 to calculate a corresponding expected transmission value, the first and second access points being nodes disposed on an available transmission path.