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US 2011/0085458 A1Published application
Downlink control information for efficient decoding
AssigneeQUALCOMM Incorporated
InventorsJuan Montojo, Wanshi Chen, Peter Gaal
Life of this patent
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Abstract
Certain aspects of the present disclosure present techniques for generating a downlink control information (DCI) message which may be transmitted with a particular organization of a downlink control channel and techniques for receiving the same. The DCI message may support uplink enhancements such as single-user multiple input multiple output (SU-MIMO) and clustered DFT-S-OFDM, and may limit blind decoding operations at a user equipment.
Claims56
A method for wireless communications, comprising:
- determining a first size of first and second downlink control information (DCI) formats, wherein the first DCI format carries information about a first uplink operation in a single codeword and the second DCI format carries information about at least one downlink operation in a single codeword;
- determining a second size of a third DCI format carrying information about a second uplink operation in a single codeword, wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- adjusting a size of the second DCI format to match the second size and to obtain a fourth DCI format;
- generating a DCI message using one of the first, second, third or fourth DCI formats;
- and
- transmitting the DCI message.
3 more elements
A method for wireless communications, comprising:
- receiving a downlink control information (DCI) message, wherein the DCI message utilizes one of first, second, third or fourth DCI formats, the first and second formats utilizing a first size, wherein the first DCI format carries information about a first uplink operation in a single codeword, wherein the second DCI format carries information about at least one downlink operation in a single codeword, wherein the third DCI format, having a second size, carries information about a second uplink operation in a single codeword, wherein the fourth DCI format carries information similar to the second DCI format, size of the fourth DCI format is matched to the second size, and wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- extracting the information in the DCI message;
- and
- transmitting an uplink signal using the extracted information.
1 more element
An apparatus for wireless communications, comprising:
- means for determining a first size of first and second downlink control information (DCI) formats, wherein the first DCI format carries information about a first uplink operation in a single codeword and the second DCI format carries information about at least one downlink operation in a single codeword;
- means for determining a second size of a third DCI format carrying information about a second uplink operation in a single codeword, wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- means for adjusting a size of the second DCI format to match the second size and to obtain a fourth DCI format;
- means for generating a DCI message using one of the first, second, third or fourth DCI formats;
- and
- means for transmitting the DCI message.
3 more elements
An apparatus for wireless communications, comprising:
- means for receiving a downlink control information (DCI) message, wherein the DCI message utilizes one of first, second, third or fourth DCI formats, the first and second formats utilizing a first size, wherein the first DCI format carries information about a first uplink operation in a single codeword, wherein the second DCI format carries information about at least one downlink operation in a single codeword, wherein the third DCI format, having a second size, carries information about a second uplink operation in a single codeword, wherein the fourth DCI format carries information similar to the second DCI format, size of the fourth DCI format is matched to the second size, and wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- means for extracting the information in the DCI message;
- and
- means for transmitting an uplink signal using the extracted information.
1 more element
An apparatus for wireless communications, comprising:
- at least one processor configured to
- determine a first size of first and second downlink control information (DCI) formats, wherein the first DCI format carries information about a first uplink operation in a single codeword and the second DCI format carries information about at least one downlink operation in a single codeword,
- determine a second size of a third DCI format carrying information about a second uplink operation in a single codeword, wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format,
- adjust a size of the second DCI format to match the second size and to obtain a fourth DCI format,
- generate a DCI message using one of the first, second, third or fourth DCI formats, and
- transmit the DCI message;
- and
- a memory coupled to the at least one processor.
5 more elements
An apparatus for wireless communications, comprising:
- at least one processor configured to
- receive a downlink control information (DCI) message, wherein the DCI message utilizes one of first, second, third or fourth DCI formats, the first and second formats utilizing a first size, wherein the first DCI format carries information about a first uplink operation in a single codeword, wherein the second DCI format carries information about at least one downlink operation in a single codeword, wherein the third DCI format, having a second size, carries information about a second uplink operation in a single codeword, wherein the fourth DCI format carries information similar to the second DCI format, size of the fourth DCI format is matched to the second size, and wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format,
- extract the information in the DCI message, and
- transmit an uplink signal using the extracted information;
- and
- a memory coupled to the at least one processor.
3 more elements
A computer-program product for wireless communications, comprising a computer readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
- instructions for determining a first size of first and second downlink control information (DCI) formats, wherein the first DCI format carries information about a first uplink operation in a single codeword and the second DCI format carries information about at least one downlink operation in a single codeword;
- instructions for determining a second size of a third DCI format carrying information about a second uplink operation in a single codeword, wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- instructions for adjusting a size of the second DCI format to match the second size and to obtain a fourth DCI format;
- instructions for generating a DCI message using one of the first, second, third or fourth DCI formats;
- and
- instructions for transmitting the DCI message.
3 more elements
A computer-program product for wireless communications, comprising a computer readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
- instructions for receiving a downlink control information (DCI) message, wherein the DCI message utilizes one of first, second, third or fourth DCI formats, the first and second formats utilizing a first size, wherein the first DCI format carries information about a first uplink operation in a single codeword, wherein the second DCI format carries information about at least one downlink operation in a single codeword, wherein the third DCI format, having a second size, carries information about a second uplink operation in a single codeword, wherein the fourth DCI format carries information similar to the second DCI format, size of the fourth DCI format is matched to the second size, and wherein a number of information bits in the third DCI format is larger than a number of information bits in the first DCI format;
- instructions for extracting the information in the DCI message;
- and
- instructions for transmitting an uplink signal using the extracted information.
1 more element
Dependencies are inferred from the claim text.