System and method utilizing transmit diversity

摘要

In a telecommunications network including a mobile terminal and a base station associated with a plurality of antennas, with each antenna configured to transmit the signal with a time offset relative to the other antenna or antennas, an engine for controlling a signal to be transmitted wirelessly from the base station towards the mobile terminal, the engine being configured to receive one or more parameter measurements relevant to the mobile terminal; and use the one or more parameter measurements to adjust the time offset of at least one of the antennas in order to adapt the signal transmission dependent upon the mobile terminal's instantaneous circumstances. Ideally the engine is configured to receive the one or more parameter measurements relating to a plurality of different mobile terminals, and independently adjust the time offset for each of the plurality of different mobile terminals, depending upon the one or more applicable parameter measurements.

主权项

1. In a telecommunications network including a mobile terminal and a base station associated with a plurality of antennas configured to transmit a signal, an engine for controlling wireless transmission of the signal from the base station towards the mobile terminal, the engine being configured to:
receive a plurality of parameter measurements relevant to the mobile terminal; determine a time offset which is adaptable depending on the plurality of parameter measurements; and apply the determined time offset to at least one of the plurality of antennas in order to adjust timing of the signal transmission from the least one of the plurality of antennas by the determined time offset in a manner dependent upon the mobile terminal's instantaneous circumstances, wherein the mobile terminal's instantaneous circumstances are indicated by varying of the plurality of parameter measurements over time according to speed or location of the mobile terminal, the plurality of parameter measurements including at least one of: (i) a signal level measured and reported by the mobile terminal or (ii) a signal quality measured and reported by the mobile terminal, wherein the plurality of antennas include at least first and second antennas, and wherein the second antenna is configured to transmit the same signal as the first antenna but with the determined time offset.