Asymmetrical feedback for coordinated transmission systems

摘要

A method includes, in a mobile communication terminal, receiving from at least first and second base stations, which cooperate in a coordinated transmission scheme, signals that are transmitted over respective first and second communication channels. Respective channel measures are calculated for the communication channels based on the received signals. First and second feedback data, which are indicative of the respective channel measures of the first and second communication channels, are formulated such that the first feedback data has a first data size and the second feedback data has a second data size, different from the first data size. The first and second feedback data are transmitted from the mobile communication terminal to at least one of the base stations.

主权项

1. A method, comprising:
in a mobile communication terminal, receiving from at least first and second base stations, which cooperate in a coordinated transmission scheme such that the first base station is designated as a serving base station via which the mobile communication terminal conducts calls, signals that are transmitted over respective first and second communication channels, and calculating for the communication channels, based on the received signals, respective channel measures that are independent of a transmission or reception scheme used by the base stations and the terminal; formulating first and second feedback data, which are indicative of the respective channel measures of the first and second communication channels and have respective first and second data sizes, such that the first data size formulated for the serving base station is larger than the second data size; and transmitting the first and second feedback data from the mobile communication terminal to at least one of the base stations.