Method for providing control information associated with fractional frequency reuse

摘要

The present invention relates to a method for providing control information in a mobile communication system. More specifically, the invention relates to a method for providing control information through a network in mobile communication. The method comprises: a step for configuring the information associated with plural frequency resource groups and the power levels thereof in the control information of preset data format, wherein the plural frequency resource groups are for application of FFR (Fractional Frequency Reuse), and a step for transmitting the control information to at least one terminal.

主权项

1. A method for transmitting control information by a network in a mobile communication system supporting FFR (fractional frequency reuse), the method comprising:
generating a message including control information indicating: the number of frequency resource groups to which FFR is applied, bandwidth sizes of the frequency resource groups, and a bandwidth ratio between the frequency resource groups, that the frequency resource groups comprise a reuse-1 frequency resource group and a plurality of reuse-3 frequency resource groups including a first reuse-3 frequency resource group, a second reuse-3 frequency resource group, and a third reuse-3 frequency resource group, that a transmission power level for the first reuse-3 frequency resource group is higher than a transmission power level for the reuse-1 frequency resource group, and the transmission power level for the reuse-1 frequency resource group is higher than transmission power levels for the second and third reuse-3 frequency resource groups, that the plurality of reuse-3 frequency resource groups have a same bandwidth size, and that the bandwidth ratio between the plurality of reuse-3 frequency resource groups and the reuse-1 frequency resource group includes 1:1:1:3; transmitting the message to at least one terminal; receiving feedback information for a FFR operation according to the control information via a FFR-dedicated control channel from the at least one terminal, wherein the feedback information is generated by performing channel estimation at the at least one terminal based on transmission power levels and frequency bandwidths of a FFR configuration indicated by the control information; and updating the FFR configuration based on the feedback information.