Technique for allocating resource unit in wireless communication system
According to various embodiments, a reception STA may receive a physical layer protocol data unit (PPDU) including a first field and a second field from a transmission STA. The first field may include information about a configuration of a plurality of resource units (RUs). The second field may include a plurality of user fields for allocating the plurality of RUs to a plurality of users. The reception STA may identify a multiple RU (M-RU) allocated to itself and decode the received PPDU.
1. A method performed by a receiving station (STA) in a wireless local area network (WLAN) system, the method comprising:
receiving, from a transmitting STA, an extremely high throughput (EHT) Physical layer Protocol Data Unit (PPDU) including a universal signal (U-SIG) field and an EHT signal (EHT-SIG) field; and
decoding the EHT PPDU,
wherein the EHT-SIG field includes a common field including a resource unit (RU) allocation subfield and a user specific field related to a station (STA) identifier,
wherein a first value of the RU allocation subfield means a first allocation pattern in which one 26-tone RU, one 52+26-tone multiple resource unit (MRU), and five contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU are sequentially allocated,
wherein a second value of the RU allocation subfield means a second allocation pattern in which one 26-tone RU, one 52+26-tone MRU, three contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU, and one 52-tone RU being contiguous to the three contiguous 26-tone RUs are sequentially allocated,
wherein a third value of the RU allocation subfield means a third allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, one 52-tone RU being contiguous to the one second 26-tone RU, and two contiguous 26-tone RUs being contiguous to the one 52-tone RU are sequentially allocated, and
wherein a fourth value of the RU allocation subfield identifies a fourth allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, and two contiguous 52-tone RUs being contiguous to the one second 26-tone RU are sequentially allocated.
2. The method of claim 1 ,
wherein the EHT PPDU further includes a legacy signal (L-SIG) field, a repeated legacy signal (RL-SIG) field being contiguous to the L-SIG field,
wherein the U-SIG field is contiguous to the RL-SIG,
wherein the EHT-SIG field is contiguous to the U-SIG field,
wherein the RL-SIG field includes same control information as the L-SIG field,
wherein the U-SIG field includes two contiguous symbols,
wherein the U-SIG field includes version independent bits and version dependent bits being contiguous to the version independent bits,
wherein the version independent bits include 3 bit information related to a physical version of the EHT PPDU, 1 bit information related to an uplink/downlink (UL/DL) direction, a transmission opportunity (TXOP) information related to a TXOP duration, and a basic service set BSS) color information related to a BSS identifier,
wherein the RU allocation subfield is configured as 9-bits information.
3. The method of claim 1 ,
wherein the user specific field includes at least one user field,
wherein a number of the at least one user field is configured based on the RU allocation subfield.
4. The method of claim 3 ,
wherein the at least one user field includes the same STA ID information on the receiving STA.
5. The method of claim 4 , wherein the method further comprising:
identifying one first user field including STA identifier (ID) information on the receiving STA among a plurality of user fields,
wherein the one first user field includes information on the MRU allocated to the receiving STA.
6. The method of claim 3 ,
wherein the at least one user field includes information indicating that a RU constituting the MRU is a last RU allocated to the receiving STA.
7. A method performed by a transmitting station (STA) in a wireless local area network (WLAN) system, the method comprising:
generating an extremely high throughput (EHT) Physical layer Protocol Data Unit PPDU) including a universal signal (U-SIG) field and an EHT signal (EHT-SIG) field; and
transmitting, to a receiving STA, the EHT PPDU,
wherein the EHT-SIG field includes a common field including a resource unit (RU) allocation subfield and a user specific field related to a station (STA) identifier,
wherein a first value of the RU allocation subfield means a first allocation pattern in which one 26-tone RU, one 52+26-tone multiple resource unit (MRU), and five contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU are sequentially allocated,
wherein a second value of the RU allocation subfield means a second allocation pattern in which one 26-tone RU, one 52+26-tone MRU, three contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU, and one 52-tone RU being contiguous to the three contiguous 26-tone RUs are sequentially allocated,
wherein a third value of the RU allocation subfield means a third allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, one 52-tone RU being contiguous to the one second 26-tone RU, and two contiguous 26-tone RUs being contiguous to the one 52-tone RU are sequentially allocated, and
wherein a fourth value of the RU allocation subfield identifies a fourth allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, and two contiguous 52-tone RUs being contiguous to the one second 26-tone RU are sequentially allocated.
8. The method of claim 7 ,
wherein the EHT PPDU further includes a legacy signal (L-SIG) field, a repeated legacy signal (RL-SIG) field being contiguous to the L-SIG field,
wherein the U-SIG field is contiguous to the RL-SIG,
wherein the EHT-SIG field is contiguous to the U-SIG field,
wherein the RL-SIG field includes same control information as the L-SIG field,
wherein the U-SIG field includes two contiguous symbols,
wherein the U-SIG field includes version independent bits and version dependent bits being contiguous to the version independent bits,
wherein the version independent bits include 3 bit information related to a physical version of the EHT PPDU, 1 bit information related to an uplink/downlink (UL/DL) direction, a transmission opportunity (TXOP) information related to a TXOP duration, and a basic service set BSS) color information related to a BSS identifier,
wherein the RU allocation subfield is configured as 9-bits information.
9. The method of claim 7 ,
wherein the user specific field includes at least one user field,
wherein a number of the at least one user field is configured based on the RU allocation subfield.
10. The method of claim 9 ,
wherein the at least one user field includes the same STA ID information on the receiving STA.
11. The method of claim 9 ,
wherein the at least one user field includes information indicating that a RU constituting the MRU is a last RU allocated to the receiving STA.
12. A receiving station (STA) in a wireless local area network (WLAN) system, the receiving STA comprising:
a transceiver configured to transmit and/or receive a wireless signal; and
a processor coupled to the transceiver, wherein the processor is configured to:
receive an extremely high throughput (EHT) Physical layer Protocol Data Unit (PPDU) including a universal signal (U-SIG) field and an EHT signal (EHT-SIG) field; and
decode the EHT PPDU,
wherein the EHT-SIG field includes a common field including a resource unit (RU) allocation subfield and a user specific field related to a station (STA) identifier,
wherein a first value of the RU allocation subfield means a first allocation pattern in which one 26-tone RU, one 52+26-tone multiple resource unit (MRU), and five contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU are sequentially allocated,
wherein a second value of the RU allocation subfield means a second allocation pattern in which one 26-tone RU, one 52+26-tone MRU, three contiguous 26-tone RUs being contiguous to the one 52+26-tone MRU, and one 52-tone RU being contiguous to the three contiguous 26-tone RUs are sequentially allocated,
wherein a third value of the RU allocation subfield means a third allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, one 52-tone RU being contiguous to the one second 26-tone RU, and two contiguous 26-tone RUs being contiguous to the one 52-tone RU are sequentially allocated, and
wherein a fourth value of the RU allocation subfield identifies a fourth allocation pattern in which one first 26-tone RU, one 52+26-tone MRU being contiguous to the one first 26-tone RU, one second 26-tone RU being contiguous to the one 52+26-tone MRU, and two contiguous 52-tone RUs being contiguous to the one second 26-tone RU are sequentially allocated.