Method for estimating channel state in a wireless communication system using fractional frequency reuse and mobile station using the same
AssigneeLG Electronics Inc.
InventorsJa Ho Koo, Wook Bong Lee, Su Nam Kim, Bin Chul Ihm, Hyun Soo Ko
Life of this patent
Estimating the term…
Abstract
A method for estimating channel state in a wireless communication system and a mobile station using the same are disclosed. The method includes acquiring cell Identifiers (IDs) of a serving cell and one or more neighbor cells, acquiring information about preset power level patterns for one or more frequency partitions to which FFR is applied according to the cell IDs, and estimating a channel state of the serving cell based on the power level pattern information.
Claims10
A method for estimating a channel state at a Mobile Station (MS) in a wireless communication system supporting a Coordinated Multi-Point (CoMP) operation and a Fractional Frequency Reuse (FFR) scheme, the method comprising:
- receiving information of a CoMP set from a serving cell, the CoMP set is configured by the serving cell, the CoMP set including cells perform a CoMP operation, the cells including the serving cell and at least one neighbor cell;
- acquiring information about a serving cell identifier (ID);
- and
- acquiring a downlink power level pattern applied to four frequency partitions configured to the serving cell among three downlink power level patterns using the acquired information about the serving cell ID according to a predefined rule when the FFR scheme is applied in the serving cell,
- wherein the acquired downlink power level pattern is different from a downlink power level pattern of a neighboring cell of the CoMP set,
- when the MS performs the CoMP operation based on the information of the CoMP set, transmitting a selected precoding matrix index (PMI) to the serving cell, the selected PMI act as a weakest interference or a strongest interference for the neighboring cell of the CoMP set performing the CoMP operation to the serving cell.
A Mobile Station (MS) for estimating a channel state in a wireless communication system supporting a Coordinated Multi-Point (CoMP) operation and a Fractional Frequency Reuse (FFR) scheme, the MS comprising:
- a receiver configured to receive information of a CoMP set from a serving cell, the CoMP set is configured by the serving cell, the CoMP set including cells perform a CoMP operation, the cells including the serving cell and at least one neighbor cell;
- and
- a processor,
- wherein the processor is configured to:
- acquire information about a serving cell identifier (ID);
- and
- acquire a downlink power level pattern applied to four frequency partitions configured to the serving cell among three downlink power level patterns using the acquired information about the serving cell ID according to a predefined rule when the FFR scheme is applied in the serving cell,
- wherein the acquired downlink power level pattern is different from a downlink power level pattern of a neighboring cell of the CoMP set,
- when the MS performs the CoMP operation based on the information of the CoMP set, transmitting a selected precoding matrix index (PMI) to the serving cell, the selected PMI act as a weakest interference or a strongest interference for the neighboring cell of the CoMP set performing the CoMP operation to the serving cell.
Dependencies are inferred from the claim text.