2 results about "Aodv routing protocol" patented technology

This invention discloses a cross-layer communication method for emergency self-organizing networks based on TPUNB and WIFI, integrating broadband and narrowband technologies. This method constructs a heterogeneous broadband-narrowband converged architecture combining a WIFI star topology and a TPUNB-Mesh topology. It achieves virtual coordinate acquisition and dynamic updates for terminals through dual aggregation nodes. Based on a five-layer architecture, a protocol stack is designed to implement private data encapsulation at the application layer, a network layer AODV routing protocol construction using a greedy search algorithm based on anchor node virtual coordinates, collision backoff control at the data link layer, and fast ack radio frequency driver optimization at the physical layer. Cross-layer collaboration enables data encapsulation, transmission, and parsing. This invention improves the transmission efficiency and reliability of emergency communication networks, reduces congestion and data collision probabilities, adapts to emergency scenarios with randomly distributed nodes and low-speed movement, and solves problems such as low transmission rates, poor routing protocol adaptability, and congestion due to the lack of broadband-narrowband convergence in existing emergency communication systems.

The invention discloses an algorithm for optimizing routing by utilizing link prediction and route reconstruction in a mobile ad hoc network, aiming at solving the problems of delay, overlarge overhead, excessive number of failed routes and the like caused by continuous node movement, frequent link disconnection and continuous route reconstruction in a mobile Ad Hoc network AODV routing protocol. The invention provides an algorithm for optimizing a routing by utilizing link prediction and routing reconstruction in a mobile Ad Hoc network. According to the algorithm, a link state prediction mechanism is introduced, and the Newton mean difference interpolation polynomial is used for predicting the link disconnection time, so that the local route repair algorithm is started before the route fails, the route reconstruction is realized, and the algorithm has better performance in the aspects of route overhead, end-to-end delay, packet delivery rate and the like.