A candidate gateway was introduced to optimize the handoff performance by pre-discovery and pre-registration.

An Optimized Algorithm of Node Selection for Wireless Sensor networks;

To optimize node selections for grid jobs under de-centralized scheduling frameworks,the algorithm of random multi-start hill climbing is proposed.

In order to solve the problem in improving the detection probability and reducing network spending,energy fusion cooperative sensing algorithm(EFCS Algorithm)and node selection algorithm were presented based on the optimal data fusion rule.

Based on carving up the fuzzy sets, according to the quantity of fault information, a node selecting method for real - time fault diagnosis tree is astablished.