Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback
AssigneeNeocific, Inc.
InventorsXiaodong Li, Titus Lo, Kemin Li, Haiming Huang
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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.
Claims21
A transmission control method by a base station serving a plurality of mobile stations in a multi-carrier communication system, the communication system utilizing a transmission structure with time slots in the time domain and frequency subchannels in the frequency domain, the method comprising:
- determining a set of mobile station-based transmission parameters to be used for a subsequent transmission, the set of transmission parameters indicating a pilot pattern for one or more frequency subchannels utilized by the system, wherein the pilot pattern differs from one time slot to another and wherein the pilot pattern is based on channel conditions or other factors;
- and
- sending a control message to a mobile station, the control message providing information regarding the set of transmission parameters.
A transmission control method by a mobile station served by a base station in a multi-carrier communication system, the communication system utilizing a transmission structure with time slots in the time domain and frequency subchannels in the frequency domain, the method comprising:
- receiving, at the mobile station, a control message from the serving base station, the control message providing information regarding a set of mobile station-based transmission parameters to be used for a subsequent transmission;
- and
- determining a pilot pattern for one or more frequency subchannels based on a pilot pattern indicator contained in the set of received transmission parameters, wherein the pilot pattern differs from one time slot to another and wherein the pilot pattern is based on channel conditions or other factors.
A base station serving a plurality of mobile stations in a multi-carrier communication system, the communication system utilizing a transmission structure with time slots in the time domain and frequency subchannels in the frequency domain, the base station comprising:
- a processor configured to determine a set of mobile station-based transmission parameters to be used for a subsequent transmission, the set of transmission parameters indicating a pilot pattern for one or more frequency subchannels utilized by the system, wherein the pilot pattern differs from one time slot to another and wherein the pilot pattern is based on channel conditions or other factors;
- and
- a transmitter configured to transmit a control message to a mobile station, the control message providing information regarding the set of transmission parameters.
21-25. (canceled)
Dependencies are inferred from the claim text.