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US 9,001,918 B2Granted
Communication method and apparatus in a wireless communication system supporting multiple OFDM parameters sets
AssigneeSamsung Electronics Co., Ltd.
InventorsRakesh Taori, Shuangfeng Han
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Abstract
A communication apparatus and method in a wireless communication system that support multiple Orthogonal Frequency Division Multiplexing (OFDM) parameter sets. A method includes determining a respective OFDM parameter set for each of multiple Radio Frequency (RF) chains; and processing an OFDM signal in each of the multiple RF chains based on a parameter value defined in the respective OFDM parameter set.
Claims24
A communication method of a Base Station (BS) in a wireless communication system, the communication method comprising:
- transmitting, to at least one Mobile Station (MS) from the BS, information of all supported Orthogonal Frequency Division Multiplexing (OFDM) parameter sets in a cell from among a plurality of OFDM parameter sets, using a default OFDM parameter set;
- selecting, by the BS, at least one OFDM parameter set for the at least one MS, from among the supported OFDM parameter sets, based on one of a channel state and a mobility of the at least one MS responsive to the default OFDM parameter set communication;
- and
- performing, by the BS, data communication with the at least one MS through the at least one selected OFDM parameter set,
- wherein each of the plurality of OFDM parameter sets comprises a different combination of parameter values representing an Inverse Fast Fourier Transform (IFFT) size, a Cyclic Prefix (CP) length, a subcarrier spacing, and a symbol duration, and
- wherein the default OFDM parameter set has a greatest subcarrier spacing among the plurality of OFDM parameter sets.
3 more elements
A communication method of a Mobile Station (MS) in a wireless communication system, the communication method comprising:
- receiving, from a Base Station (BS) at the MS, information of all supported Orthogonal Frequency Division Multiplexing (OFDM) parameter sets in a cell from among a plurality of OFDM parameter sets, using a default OFDM parameter set;
- and
- performing, by the MS, data communication with the BS through at least one OFDM parameter set selected from the supported OFDM parameter sets based on one of a channel state and a mobility of the MS responsive to the default OFDM parameter set communication,
- wherein each of the plurality of OFDM parameter sets comprises a different combination of parameter values representing an Inverse Fast Fourier Transform (IFFT) size, a Cyclic Prefix (CP) length, a subcarrier spacing, and a symbol duration, and
- wherein the default OFDM parameter set has a greatest subcarrier spacing among the plurality of OFDM parameter sets.
2 more elements
A communication apparatus of a Base Station (BS) in a wireless communication system, the communication apparatus comprising:
- a controller configured to select all supported Orthogonal Frequency Division Multiplexing (OFDM) parameter sets of a cell from among a plurality of OFDM parameter sets communicated via a default OFDM parameter set, and the controller is further configured to subsequently select at least one OFDM parameter set for at least one Mobile Station (MS), from among the supported OFDM parameter sets, based on one of a channel state and a mobility of the at least one MS responsive to the default OFDM parameter set;
- and
- a transceiver configured to transmit, to the at least one MS, information of the supported OFDM parameter sets of the cell, using the default OFDM parameter set, and perform data communication with the at least one MS through the subsequently selected at least one OFDM parameter set,
- wherein each of the plurality of OFDM parameter sets comprises a different combination of parameter values representing an Inverse Fast Fourier Transform (IFFT) size, a Cyclic Prefix (CP) length, a subcarrier spacing, and a symbol duration, and
- wherein the default OFDM parameter set has a greatest subcarrier spacing among the plurality of OFDM parameter sets.
2 more elements
A communication apparatus of a Mobile Station (MS) in a wireless communication system, the communication apparatus comprising:
- a controller configured to determine all supported Orthogonal Frequency Division Multiplexing (OFDM) parameter sets of a cell from among a plurality of OFDM parameter sets as communicated via a default OFDM parameter set transmitted by a Base Station (BS), and the controller is further configured to subsequently select at least one OFDM parameter set from among the plurality of OFDM parameter sets based on one of a channel state and a mobility of the MS;
- and
- a transceiver configured to receive, from the BS, the default OFDM parameter set, and perform data communication with the BS through the at least one subsequently selected OFDM parameter set,
- wherein each of the plurality of OFDM parameter sets comprises a different combination of parameter values representing an Inverse Fast Fourier Transform (IFFT) size, a Cyclic Prefix (CP) length, a subcarrier spacing, and a symbol duration, and
- wherein the default OFDM parameter set has the greatest subcarrier spacing among the plurality of OFDM parameter sets.
2 more elements
Dependencies are inferred from the claim text.