Methods and systems for overhead reduction in a wireless communication network
AssigneeQUALCOMM Incorporated
InventorsSerguei A. Glazko, Matthias Brehler, Je Woo Kim, Mahesh Makhijani
Life of this patent
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Abstract
Methods and apparatus are provided for increasing throughput in a wireless communication system by reducing the amount of overhead transmitted to certain user terminals. Overhead due to control information may be reduced for these certain user terminals by selecting a low repetition factor. Overhead may be further reduced for these certain user terminals by selecting a modulation/coding scheme with a higher data rate for transmitting the control information. The selection may be based on channel conditions associated with the user terminals, such as signal-to-interference-plus-noise ratios (SINRs).
Claims28
A method for wireless communications, comprising:
- determining channel conditions of a plurality of user terminals;
- grouping a first set of the user terminals with channel conditions below a threshold into a first group;
- grouping a second set of the user terminals with channel conditions above the threshold into a second group;
- scheduling information for the first set of the user terminals with channel conditions below the threshold in a first frame with a first downlink MAP (DL-MAP) repetition;
- scheduling information for the second set of the user terminals with channel conditions above the threshold in a second frame with a second DL-MAP repetition, the second DL-MAP repetition being lower than the first DL-MAP repetition;
- and
- transmitting the first and second frames.
An apparatus for wireless communications, comprising:
- means for determining channel conditions of one or more user terminals;
- means for grouping a first set of the user terminals with channel conditions below a threshold into a first group;
- means for grouping a second set of the user terminals with channel conditions above the threshold into a second group;
- means for scheduling information for the first set of the user terminals with channel conditions below the threshold in a first frame with a first downlink MAP (DL-MAP) repetition;
- means for scheduling information for the second set of the user terminals with channel conditions above the threshold in a second frame with a second DL-MAP repetition, the second DL-MAP repetition being lower than the first DL-MAP repetition;
- and
- means for transmitting the first and second frames.
An apparatus for wireless communications, comprising:
- logic for determining channel conditions of one or more user terminals;
- logic for grouping a first set of the user terminals with channel conditions below a threshold into a first group;
- logic for grouping a second set of the user terminals with channel conditions above the threshold into a second group;
- logic for scheduling information for the first set of the user terminals with channel conditions below the threshold in a first frame with a first downlink MAP (DL-MAP) repetition
- logic for scheduling information for the second set of the user terminals with channel conditions above the threshold in a second frame with a second DL-MAP repetition, the second DL-MAP repetition being lower than the first DL-MAP repetition;
- and
- a transmitter for transmitting the first and second frames.
A computer-program product for wireless communications, the computer-program product comprising a non-transitory computer-readable storage medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
- instructions for determining channel conditions of one or more user terminals;
- instructions for grouping a first set of the user terminals with channel conditions below a threshold into a first group;
- instructions for grouping a second set of the user terminals with channel conditions above the threshold into a second group;
- instructions for scheduling information for the first set of the user terminals with channel conditions below the threshold in a first frame with a first downlink MAP (DL-MAP) repetition;
- instructions for scheduling information for the second set of the user terminals with channel conditions above the threshold in a second frame with a second DL-MAP repetition, the second DL-MAP repetition being lower than the first DL-MAP repetition;
- and
- instructions for transmitting the first and second frames.
Dependencies are inferred from the claim text.