Performance enhancement of RU duplication with predefined interleaving patterns in wireless communications

1 . A method, comprising:

generating, by a processor of an apparatus, at least one resource unit (RU); and

performing, by the processor, a wireless communication with RU duplication in a frequency domain using either:

a same interleaving pattern applied across orthogonal frequency-division multiplexing (OFDM) symbols of each duplicated RU of the at least one RU; or

two or more interleaving patterns periodically or alternatively switched over OFDM symbols of two or more duplicated RUs of the at least one RU,

wherein the performing of the wireless communication with the RU duplication comprises performing a first transmission or a second transmission or a third transmission,

wherein the first transmission comprises a DL communication of an enhanced long range (ELR) physical-layer protocol data unit (PPDU) with the RU duplication using the same interleaving pattern such that a preamble, an ELR short training field (ELR-STF) and an ELR long training field (ELR-LTF) of the ELR PPDU are transmitted without any interleaving pattern while transmission of one or more RUs of the at least one RU in an ELR data (ELR-DATA) is performed with the RU duplication using the same interleaving pattern,

wherein the second transmission comprises an uplink (UL) communication of a trigger-based (TB) ELR PPDU with the RU duplication using the same interleaving pattern such that a preamble of the TB ELR PPDU is transmitted without any interleaving pattern while transmission of one or more RUs of the at least one RU in ELR-STF, an ELR-LTF and an ELR-DATA is performed with the RU duplication using the same interleaving pattern, and

wherein the third transmission comprises another DL communication of an ELR PPDU with the RU duplication using the two or more interleaving patterns that are periodically or alternatively switched such that the preamble, the ELR-STF and the ELR-LTF of the ELR PPDU are transmitted without any interleaving pattern while transmission of two or more RUs of the at least one RU in the ELR-DATA is performed with the RU duplication using the interleaving patterns periodically or alternatively switched in the frequency domain.

2 . The method of claim 1 , wherein the at least one RU comprises a plurality of RUs of different sizes, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs of different sizes.

3 . The method of claim 1 , wherein the at least one RU comprises a plurality of RUs of a same size, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs different number of times such that a first RU of the plurality of RUs is duplicated N times and a second RU of the plurality of RUs is duplicated M times.

4 . The method of claim 1 , wherein the at least one RU comprises a plurality of RUs of different sizes, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs different number of times such that a first RU of the plurality of RUs of a first size is duplicated N times and a second RU of the plurality of RUs of a second size is duplicated M times.

5 . The method of claim 1 , wherein the at least one RU comprises a 26-tone RU (RU26), and wherein the performing of the wireless communication with the RU duplication comprises duplicating the RU26 three times (3×) for each of one or more users.

6 . The method of claim 1 , wherein the at least one RU comprises a 26-tone RU (RU26), and wherein the performing of the wireless communication with the RU duplication comprises duplicating the RU26 four times (4×) for each of one or more users.

7 . The method of claim 1 , wherein the performing of the wireless communication with the RU duplication comprises duplicating the at least one RU such that duplications of the at least one RU are not adjacent to one another in the frequency domain.

8 . An apparatus, comprising:

a transceiver configured to communicate wirelessly; and

a processor coupled to the transceiver and configured to perform operations comprising:

generating at least one resource unit (RU); and

performing, via the transceiver, a wireless communication with RU duplication in a frequency domain using either:

a same interleaving pattern applied across orthogonal frequency-division multiplexing (OFDM) symbols of each duplicated RU of the at least one RU; or

two or more interleaving patterns periodically or alternatively switched over OFDM symbols of two or more duplicated RUs of the at least one RU,

wherein the performing of the wireless communication with the RU duplication comprises performing a first transmission or a second transmission or a third transmission,

wherein the first transmission comprises a DL communication of an enhanced long range (ELR) physical-layer protocol data unit (PPDU) with the RU duplication using the same interleaving pattern such that a preamble, an ELR short training field (ELR-STF) and an ELR long training field (ELR-LTF) of the ELR PPDU are transmitted without any interleaving pattern while transmission of one or more RUs of the at least one RU in an ELR data (ELR-DATA) is performed with the RU duplication using the same interleaving pattern,

wherein the second transmission comprises an uplink (UL) communication of a trigger-based (TB) ELR PPDU with the RU duplication using the same interleaving pattern such that a preamble of the TB ELR PPDU is transmitted without any interleaving pattern while transmission of one or more RUs of the at least one RU in ELR-STF, an ELR-LTF and an ELR-DATA is performed with the RU duplication using the same interleaving pattern, and

wherein the third transmission comprises another DL communication of an ELR PPDU with the RU duplication using the two or more interleaving patterns that are periodically or alternatively switched such that the preamble, the ELR-STF and the ELR-LTF of the ELR PPDU are transmitted without any interleaving pattern while transmission of two or more RUs of the at least one RU in the ELR-DATA is performed with the RU duplication using the interleaving patterns periodically or alternatively switched in the frequency domain.

9 . The apparatus of claim 8 , wherein the at least one RU comprises a plurality of RUs of different sizes, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs of different sizes.

10 . The apparatus of claim 8 , wherein the at least one RU comprises a plurality of RUs of a same size, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs different number of times such that a first RU of the plurality of RUs is duplicated N times and a second RU of the plurality of RUs is duplicated M times.

11 . The apparatus of claim 8 , wherein the at least one RU comprises a plurality of RUs of different sizes, and wherein the performing of the wireless communication with the RU duplication comprises duplicating the plurality of RUs different number of times such that a first RU of the plurality of RUs of a first size is duplicated N times and a second RU of the plurality of RUs of a second size is duplicated M times.

12 . The apparatus of claim 8 , wherein the at least one RU comprises a 26-tone RU (RU26), and wherein the performing of the wireless communication with the RU duplication comprises duplicating the RU26 three times (3×) for each of one or more users.

13 . The apparatus of claim 8 , wherein the at least one RU comprises a 26-tone RU (RU26), and wherein the performing of the wireless communication with the RU duplication comprises duplicating the RU26 four times (4×) for each of one or more users.

14 . The apparatus of claim 8 , wherein the performing of the wireless communication with the RU duplication comprises duplicating the at least one RU such that duplications of the at least one RU are not adjacent to one another in the frequency domain.