SIGNALING METHOD FOR THE DECENTRALIZED ALLOCATION OF ONLINE TRANSMISSION POWER IN A WIRELESS NETWORK

摘要

The invention relates to distributed wireless ad hoc networks comprising interfering transmission channels, in which direct links between adjacent transmit nodes and receive nodes in a connection pair are established and optimized. The iterative algorithms are designed for elastic data traffic and operate according to the best-effort principle. As the transmission channels mutually interfere with each other, the transmission power has to be adequately coordinated in order to prevent great levels of interference. The power vector therefore has to be selected in an optimal manner such that the utility function of the network is maximal. Implementing the algorithms in distributed mobile radio networks without having a central control unit requires certain global gradient-based data which is exchanged between all nodes with the aid of a flooding protocol in prior art, a process that requires a lot of effort. The inventive signaling method alternately uses a primary network and an adjoint network, the respective transmit nodes and receive nodes constantly changing their roles in an agreed time pattern. The transmission signals in the adjoint network are predistorted in such a way that the influence of the proper mobile radio channel is canceled on each transmission channel. The occurring interference is implicitly transmitted as well by the receive nodes and can be directly determined and taken into account by the transmit nodes.