Detecting format of data
OwnerYong H Seokinventor
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Abstract
A method for detecting a format of data in a wireless local area network and a device using the same are provided. The device receives a physical layer protocol data unit (PPDU) that includes a first field and a second field. The device determines a first format of the PPDU based on at least one of the first field and the second field and determines a second format of the PPDU based on a modulation phase of the PPDU.
Claims10
A method for transmitting a physical layer protocol data unit (PPDU) in a wireless local area network, the method comprising:
- generating a PPDU, the PPDU comprising a first short training (ST) field, a first channel estimation (CE) field, a header field, a second ST field, a second CE field, a data field and a training (TRN) field;
- and
- transmitting the PPDU,
- wherein the header field comprises a stream field indicating a number of spatial streams,
- wherein the second CE field comprises a number of symbols, the number of symbols for the second CE field determined based on the number of spatial streams of the header field,
- wherein the second CE field generated from a first mapping matrix, the first mapping matrix having a number of columns, the number of columns corresponding to the number of symbols for the second CE field,
- wherein the TRN field comprises a plurality of TRN subfields, each TRN subfield comprising a number of symbols, each TRN subfield generated from a second mapping matrix having a number of columns, the number of columns of the second mapping matrix corresponding to the number of symbols of each TRN subfield.
A device configured for transmitting a physical layer protocol data unit (PPDU) in a wireless local area network, the device comprising:
- a radio frequency module configured to receive radio signals;
- a processor operatively coupled with the radio frequency module;
- and
- memory disposed to said processor, said memory comprising instructions that, when executed by said processor, causes the device to:
- generate a PPDU including a first short training (ST) field, a first channel estimation (CE) field, a header field, a second ST field, a second CE field, a data field and a training (TRN) field;
- and
- transmit the PPDU;
- wherein the header field comprises a stream field indicating a number of spatial streams,
- wherein the second CE field comprises a number of symbols, the number of symbols for the second CE field determined based on the number of spatial streams of the header field,
- wherein the second CE field generated from a first mapping matrix, the first mapping matrix having a number of columns, the number of columns corresponding to the number of symbols for the second CE field,
- wherein the TRN field comprises a plurality of TRN subfields, each TRN subfield comprising a number of symbols, each TRN subfield generated from a second mapping matrix having a number of columns, the number of columns of the second mapping matrix corresponding to the number of symbols of each TRN subfield.
Dependencies are inferred from the claim text.