Patent ID: 8189554
Filing Date: 2012-05-29
Classification: H04W,Y02D

Abstract:
1. A method in which a plurality of data transceivers included in a wireless sensor network transmit and receive data with devices located in their vicinity, the method comprising: (a) defining, by each of the data transceivers, a relation with data transceivers located in their vicinity; (b) assigning a data transceiver for beacon transmission/reception to each slot of a superframe in consideration of the defined relation; (c) generating a superframe structure including a Beacon Only Period (BOP) and a data frame transmission period, in consideration of assigned slots, wherein a size of a BOP in a current superframe is determined based on one of a size of BOPs in prior superframes and an average value of BOP values used in a plurality of recently transmitted superframes; and (d) broadcasting beacons and data frames in consideration of the superframe structure.