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US 2025/0063570 A1Published application
Method and device for receiving ppdu having been subjected to ldpc tone mapping in broadband tone plan in wireless lan system
AssigneeLG Electronics Inc.
InventorsEunsung PARK, Jinsoo CHOI, Dongguk LIM
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Abstract
Proposed are a method and a device for receiving a PPDU having been subjected to LDPC tone mapping in a broadband tone plan in a wireless LAN system. Specifically, a reception STA receives a PPDU from a transmission STA through broadband and decodes the PPDU. A data tone included in a data field is subjected to LDPC tone mapping on the basis of a first parameter. A tone plan for the 240 MHz band is 3×996 tone RUs, and a tone plan for the 320 MHz band is 4×996 tone RUs. The first parameter is 20.
Claims20
A method, comprising:
- receiving, by a receiving station (STA), an extreme high throughput (EHT) multi user (MU) Physical Protocol Data Unit (PPDU) from a transmitting STA;
- and
- decoding, by the receiving STA, the EHT MU PPDU,
- wherein the EHT MU PPDU includes a data field,
- wherein for a 3×996-tone Multi Resource Unit (MRU) or a 4×996-tone MRU that spans multiple 80 MHz frequency subblocks, Low Density Parity Check (LDPC) tone mapping is performed separately in each 80 MHz frequency subblock on the 3×996-tone MRU or the 4×996-tone MRU,
- wherein a value of a LDPC tone mapping distance parameter, DTM_1, for the 3×996-tone MRU or the 4×996-tone MRU within a 1-th 80 MHz frequency subblock is 20,
- wherein the 3×996-tone MRU is obtained by combining a first 996-tone RU, a second 996-tone RU, and a third 996-tone RU,
- wherein the LDPC tone mapping is done in the first 996-tone RU located in a first 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by a constellation mapper based on the DTM_1,
- wherein the LDPC tone mapping is done in the second 996-tone RU located in a second 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_2, and
- wherein the LDPC tone mapping is done in the third 996-tone RU located in a third 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_3.
7 more elements
A method, comprising:
- generating, by a transmitting station (STA), an extreme high throughput (EHT) multi user (MU) Physical Protocol Data Unit (PPDU);
- and
- transmitting, by the transmitting STA, the EHT MU PPDU to a receiving STA,
- wherein the EHT MU PPDU includes a data field,
- wherein for a 3×996-tone Multi Resource Unit (MRU) or a 4×996-tone MRU that spans multiple 80 MHz frequency subblocks, Low Density Parity Check (LDPC) tone mapping is performed separately in each 80 MHz frequency subblock on the 3×996-tone MRU or the 4×996-tone MRU,
- wherein a value of a LDPC tone mapping distance parameter, DTM_1, for the 3×996-tone MRU or the 4×996-tone MRU within a 1-th 80 MHz frequency subblock is 20,
- wherein the 3×996-tone MRU is obtained by combining a first 996-tone RU, a second 996-tone RU, and a third 996-tone RU,
- wherein the LDPC tone mapping is done in the first 996-tone RU located in a first 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by a constellation mapper based on the DTM_1,
- wherein the LDPC tone mapping is done in the second 996-tone RU located in a second 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_2, and
- wherein the LDPC tone mapping is done in the third 996-tone RU located in a third 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_3.
7 more elements
A receiving station (STA), comprising:
- a memory;
- a transceiver;
- and
- a processor operatively coupled to the memory and the transceiver,
- wherein the processor is configured to:
- receive an extreme high throughput (EHT) multi user (MU) Physical Protocol Data Unit (PPDU) from a transmitting STA;
- and
- decode the EHT MU PPDU,
- wherein the EHT MU PPDU includes a data field,
- wherein for a 3×996-tone Multi Resource Unit (MRU) or a 4×996-tone MRU that spans multiple 80 MHz frequency subblocks, Low Density Parity Check (LDPC) tone mapping is performed separately in each 80 MHz frequency subblock on the 3×996-tone MRU or the 4×996-tone MRU,
- wherein a value of a LDPC tone mapping distance parameter, DTM_1, for the 3×996-tone MRU or the 4×996-tone MRU within a 1-th 80 MHz frequency subblock is 20,
- wherein the 3×996-tone MRU is obtained by combining a first 996-tone RU, a second 996-tone RU, and a third 996-tone RU,
- wherein the LDPC tone mapping is done in the first 996-tone RU located in a first 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by a constellation mapper based on the DTM_1,
- wherein the LDPC tone mapping is done in the second 996-tone RU located in a second 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_2, and
- wherein the LDPC tone mapping is done in the third 996-tone RU located in a third 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_3.
12 more elements
A transmitting station (STA), comprising:
- a memory;
- a transceiver;
- and
- a processor operatively coupled to the memory and the transceiver,
- wherein the processor is configured to:
- generate an extreme high throughput (EHT) multi user (MU) Physical Protocol Data Unit (PPDU);
- and
- transmit the EHT MU PPDU to a receiving STA,
- wherein the EHT MU PPDU includes a data field,
- wherein for a 3×996-tone Multi Resource Unit (MRU) or a 4×996-tone MRU that spans multiple 80 MHz frequency subblocks, Low Density Parity Check (LDPC) tone mapping is performed separately in each 80 MHz frequency subblock on the 3×996-tone MRU or the 4×996-tone MRU,
- wherein a value of a LDPC tone mapping distance parameter, DTM_1, for the 3×996-tone MRU or the 4×996-tone MRU within a 1-th 80 MHz frequency subblock is 20,
- wherein the 3×996-tone MRU is obtained by combining a first 996-tone RU, a second 996-tone RU, and a third 996-tone RU,
- wherein the LDPC tone mapping is done in the first 996-tone RU located in a first 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by a constellation mapper based on the DTM_1,
- wherein the LDPC tone mapping is done in the second 996-tone RU located in a second 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_2, and
- wherein the LDPC tone mapping is done in the third 996-tone RU located in a third 80 MHz frequency subblock is done by permuting a stream of complex numbers generated by the constellation mapper based on the DTM_3.
12 more elements
Dependencies are inferred from the claim text.