Multi-antenna transmission process and system and relative mobile terminal

Abstract

A multi-antenna transmission process for providing down-link radio coverage from radio base station to mobile terminal in a network for radio mobile communications through a transmission system includes: at least one multi-radiator transmitting antenna, directed towards at least one mobile terminal; at least one database associated with at least one coverage cell of the mobile communications network and containing information about a position of the mobile terminal; processing means cooperating with the at least one multi-radiator transmitting antenna and the at least one database, the processing means being adapted to associate a transmission direction with the position of the mobile terminal, wherein the transmission direction is suitable for reaching the mobile terminal, including the steps of: a) detecting a position of the mobile terminal; b) storing the position into the at least one database; c) determining at least one transmission direction of at least one transmission beam from the at least one multi-radiator transmitting antenna to the mobile terminal depending on the position stored in the at least one database, wherein at least one of the transmission parameters that must be set in the at least one multi-radiator transmission antenna in order to transmit in the transmission direction is associated with the stored position of the mobile terminal.

Description

technical field [0001] The present invention relates to processes and systems for multi-antenna transmission, in particular to processes and systems employed to provide downlink cellular coverage in mobile communication networks, and to mobile terminals thereof. Background technique [0002] As is known, cellular overlay mobile telecommunication networks have evolved rapidly since their appearance on the mass market in the eighties. [0003] Initially, these networks primarily performed voice services, but today there is an increasing (and now common) need for data services. Technological evolution is thus stimulated by a constant demand for performance increases in terms of network transmission speed and capacity. [0004] Standardization is currently taking place at a pace that was unusual for the telecommunications sector until the last decade, but now the stimulus created by the increased frequency band demands of various new data applications is leading to the introduc...

AI Technical Summary

Problems solved by technology

[0062] However, this technique has a structural limitation: in fact, it requires that the propagation channel be symmetrical, since the direction of transmission is determined by the quality of reception in the same direction