Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback
AssigneeNeo Wireless LLC
InventorsXiaodong Li, Titus Lo, Kemin Li, Haiming Huang
Life of this patent
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Abstract
An arrangement is disclosed where in a multi-carrier communication system, the modulation scheme, coding attributes, training pilots, and signal power may be adjusted to adapt to channel conditions in order to maximize the overall system capacity and spectral efficiency without wasting radio resources or compromising error probability performance, etc.
Claims38
A mobile station served by a serving base station using Orthogonal Frequency Division Multiplexing (OFDM) and utilizing time slots in a time domain and subchannels in a frequency domain, the mobile station comprising:
- a transmitter;
- and
- a receiver configured to:
- receive control messages from the serving base station over at least one control channel,
- wherein:
- each of the control messages comprises transmission parameters specific to the mobile station for a subsequent transmission by the serving base station over a subchannel to the mobile station in at least one time slot;
- and
- the transmission parameters of the control messages indicate antenna transmission schemes and subchannel configurations, at least one of the control messages indicating an antenna transmission scheme selected from at least a transmission diversity scheme and a multiple-input multiple-output (MIMO) scheme and at least one of the control messages indicating a subchannel configuration;
- and
- receive subsequent transmissions by the serving base station based on the transmission parameters in the control messages.
A mobile station served by a serving base station using Orthogonal Frequency Division Multiplexing (OFDM) and utilizing time slots in a time domain and subchannels in a frequency domain, the mobile station comprising:
- a transmitter;
- and
- a receiver configured to:
- receive a control message from the serving base station over a control channel,
- wherein:
- the control message comprises transmission parameters specific to the mobile station for a subsequent transmission by the serving base station over a subchannel to the mobile station in at least one time slot;
- and
- the transmission parameters indicate an antenna transmission scheme and a subchannel configuration, the antenna transmission scheme selected from at least a transmission diversity scheme and a multiple-input multiple-output (MIMO) scheme;
- and
- receive subsequent transmissions by the serving base station based on the transmission parameters in the control message.
A mobile station served by a serving base station using Orthogonal Frequency Division Multiplexing (OFDM) and utilizing time slots in a time domain and subchannels in a frequency domain, the mobile station comprising:
- a transmitter configured to transmit channel state information to the serving base station;
- and
- a receiver configured to:
- receive control messages from the serving base station over at least one control channel,
- wherein:
- each of the control messages comprises transmission parameters specific to the mobile station for a subsequent transmission by the serving base station over a subchannel to the mobile station in at least one time slot;
- and
- the transmission parameters of the control messages indicate antenna transmission schemes and subchannel configurations, at least one of the control messages indicating an antenna transmission scheme selected from the antenna transmission schemes including a transmission diversity scheme and a multiple-input multiple-output (MIMO) scheme and at least one of the control messages indicating a subchannel configuration;
- and
- receive subsequent transmissions by the serving base station based on the transmission parameters in the control messages;
- wherein a modulation and error correction coding scheme is based on the channel state information, the subchannel configuration is based on the channel state information, and an antenna transmission scheme used to transmit at least one of the subsequent transmissions is based on the channel state information.
A mobile station served by a serving base station using Orthogonal Frequency Division Multiplexing (OFDM) and utilizing time slots in a time domain and subchannels in a frequency domain, the mobile station comprising:
- a transmitter configured to transmit channel state information to the serving base station;
- and
- a receiver configured to:
- receive a single control message from the serving base station over a control channel,
- wherein:
- the single control message comprises transmission parameters specific to the mobile station for a subsequent transmission by the serving base station over a subchannel to the mobile station in at least one time slot;
- and
- the transmission parameters indicate an antenna transmission scheme and a subchannel configuration, the antenna transmission scheme selected from at least a transmission diversity scheme and a multiple-input multiple-output (MIMO) scheme;
- and
- receive subsequent transmissions by the serving base station based on the transmission parameters in the single control message;
- wherein a modulation and error correction coding scheme is based on the channel state information, the subchannel configuration is based on the channel state information, and an antenna transmission scheme used to transmit at least one of the the subsequent transmissions is based on the channel state information.
Dependencies are inferred from the claim text.