Patent ID: 8379589
Filing Date: 2013-02-19
Classification: H04L

Abstract:
1. A node quantity adjustment method for a sensor network, the sensor network comprising a plurality of groups, the groups comprising a first group and a second group, the first group including a plurality of first nodes, one of the first nodes being set as a first gate node, the second group including a plurality of second nodes, one of second nodes being set as a second gate node, wirelessly connecting to one of the first nodes, the method comprising the steps of: receiving at least one data, having a first unit time data length, from each of the first nodes; calculating a first data aggregation time of the first gate node according to the first unit time data length of the at least one data of each of the first nodes and a default packet length, wherein the first data aggregation time is the time of accumulating the at least one data and the time of transmitting the at least one data to a sink node; and adjusting a quantity of the first nodes according to the first data aggregation time; wherein the first data aggregation time is calculated according to a follow equation: wherein T represents the first data aggregation time, P represents a data error rate, S represents the default packet length, λ