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US 8,942,218 B2Granted
Retransmission of data using sub-carrier frequency permutation
AssigneeIntel Corporation
InventorMenashe Soffer
Life of this patent
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Abstract
Embodiments of retransmission of data using sub-carrier frequency permutation are described herein.
Claims15
An apparatus comprising:
- a transmitter to wirelessly transmit data having a plurality of symbols utilizing a first sub-carrier frequency mapping;
- and
- a hardware module to cause the transmitter to retransmit the data utilizing a second sub-carrier frequency mapping such that at least one said symbol in the data is retransmitted wirelessly over a sub-carrier frequency that is different from a sub-carrier frequency previously used to transmit the at least one symbol, wherein the second sub-carrier mapping is selected from a plurality of sub-carrier frequency mappings pre-generated to account for an environment the transmitter is located in, wherein the second sub-carrier is selected based upon an increased likelihood that symbols that were not successfully transmitted will be successfully retransmitted;
- and
- a communication module that demodulates a combined packet that includes original and retransmitted symbols in the combined packet, wherein the communication module obtains an optimal weighted average of the symbols of packets of the combined packet.
2 more elements
An apparatus comprising:
- a receiver to receive a first transmission of data transmitted utilizing a first sub-carrier frequency mapping and a second transmission of the data transmitted using a second sub-carrier frequency mapping that is a permutation of the first sub-carrier frequency mapping, wherein symbols in the data in the second transmission are permutated across sub-carrier frequencies with respect to symbols in the first transmission, wherein the second sub-carrier mapping is selected from a plurality of sub-carrier frequency mappings pre-generated to account for an environment a transmitter that has transmitted the data is located in;
- and
- a communication module that demodulates a combined packet that includes original and retransmitted symbols in the combined packet, wherein the communication module obtains an optimal weighted average of the symbols of packets of the combined packet.
A method comprising:
- transmitting data having a plurality of symbols with a single antenna utilizing a first sub-carrier frequency mapping such that each said symbol is transmitted using a respective said sub-carrier frequency;
- and
- retransmitting the data with the single antenna utilizing a second sub-carrier frequency mapping that is a permutation of the first sub-carrier frequency mapping such that the plurality of symbols in the retransmission use a different permutation of the plurality of sub-carrier frequencies than that used in the transmission, wherein the second sub-carrier mapping is selected from a plurality of sub-carrier frequency mappings pre-generated to account for an environment the single antenna is located in;
- and
- demodulating a combined packet that includes original and retransmitted symbols in the combined packet, to obtain an optimal weighted average of the symbols of packets of the combined packet.
2 more elements
A method comprising:
- Under control of one or more processors with executable instructions, transmitting data having a plurality of symbols with a single antenna utilizing a first sub-carrier frequency mapping such that each said symbol is transmitted using a respective said sub-carrier frequency;
- and
- retransmitting the data with the single antenna utilizing a second sub-carrier frequency mapping that is a permutation of the first sub-carrier frequency mapping such that the plurality of symbols in the retransmission use a different permutation of the plurality of sub-carrier frequencies than that used in the transmission, wherein the second sub-carrier mapping is selected from a plurality of sub-carrier frequency mappings pre-generated to account for an environment the single antenna is located in;
- and
- demodulating a combined packet that includes original and retransmitted symbols in the combined packet, to obtain an optimal weighted average of the symbols of packets of the combined packet.
2 more elements
Dependencies are inferred from the claim text.