Configuration of signal field comprising information related to transmission mode

Patent metadata

Field	Value
Publication number	US-2021410131-A1
Application number	US-202117356866-A
Country	US
Kind code	A1
Filing date	Jun 24, 2021
Priority date	Jun 24, 2020
Publication date	Dec 30, 2021
Grant date	—

Abstract

The present disclosure proposes an example related to the signal field of the wireless LAN system. For example, a transmission/reception physical protocol data unit (PPDU) includes a first control signal field, and the first control signal field includes information related to a plurality of transmission modes which are related to SU, OFDMA, full bandwidth MU-MIMO, NDP, etc. The second control signal field of the transmission/reception PPDU may include various common fields and user specific fields configured based on a transmission mode.

First claim

What is claimed is:

1 . A method for by a receiving station (STA) in a wireless local area network, the method comprising:
receiving, by the receiving STA, a reception physical protocol data unit (PPDU), wherein the reception PPDU includes a first control signal field for interpreting the reception PPDU, a second control signal field including additional control information for the reception PPDU, and a data field, wherein the first control signal field includes a type field having 2-bit information related to a type of the reception PPDU; and determining, by the receiving STA, the type of the reception PPDU based on the type field, wherein the receiving STA determines, based on the type field having a first value, the reception PPDU as an orthogonal frequency division multiple access (OFDMA) based PPDU, wherein the receiving STA determines, based on the type field having a second value, the reception PPDU as a multi-user multiple input multiple output (MU-MIMO) based PPDU, wherein the receiving STA determines, based on the type field having a third value, the reception PPDU as a single user (SU) PPDU or a null data packet (NDP) PPDU.

2 . The method of claim 1 , wherein the reception PPDU is an extremely high throughput (EHT) PPDU, the first control signal field is a universal signal (U-SIG) field, and the second control signal field is an EHT-SIG field.

3 . The method of claim 1 , wherein the first control signal field includes a 1-bit control field continuous to the type field, and the 1-bit control field includes one of control information related to a hybrid automatic repeat request (HARQ) technique applied to the reception PPDU and control information related to a Multi-Access Point (Multi-AP) transmission technique applied to the reception PPDU.

4 . The method of claim 1 , wherein the OFDMA based PPDU includes at least one resource unit (RU) allocation sub-field in the second control signal field, and each of the at least one RU allocation sub-field has a length of 9 bits and includes location information of an RU allocated for the receiving STA,
wherein the MU-MIMO based PPDU does not include the RU allocation sub-field in the second control signal field and includes information overflowed from the first control signal field and information related to a plurality of users, wherein the SU PPDU and the NDP PPDU do not include the RU allocation sub-field in the second control signal field and include information overflowed from the first control signal field.

5 . The method of claim 1 , wherein the first control signal field is configured based on two consecutive symbols, and each of the two consecutive symbols is used for 26-bit information.

6 . A receiving station (STA) in a wireless local area network, the STA comprising:
a transceiver configured to transmit and/or receive a wireless signal; and a processor configured to control the transceiver, wherein the processor is further configured to: receive a reception physical protocol data unit (PPDU), wherein the reception PPDU includes a first control signal field for interpreting the reception PPDU, a second control signal field including additional control information for the reception PPDU, and a data field, wherein the first control signal field includes a type field having 2-bit information related to a type of the reception PPDU; and determine the type of the reception PPDU based on the type field, wherein the processor determines, based on the type field having a first value, the reception PPDU as an orthogonal frequency division multiple access (OFDMA) based PPDU, wherein the processor determines, based on the type field having a second value, the reception PPDU as a multi-user multiple input multiple output (MU-MIMO) based PPDU, wherein the processor determines, based on the type field having a third value, the reception PPDU as a single user (SU) PPDU or a null data packet (NDP) PPDU.

7 . The STA of claim 6 , wherein the reception PPDU is an extremely high throughput (EHT) PPDU, the first control signal field is a universal signal (U-SIG) field, and the second control signal field is an EHT-SIG field.

8 . The STA of claim 6 , wherein the first control signal field includes a 1-bit control field continuous to the type field, and the 1-bit control field includes one of control information related to a hybrid automatic repeat request (HARQ) technique applied to the reception PPDU and control information related to a Multi-Access Point (Multi-AP) transmission technique applied to the reception PPDU.

9 . The STA of claim 6 , wherein the OFDMA based PPDU includes at least one resource unit (RU) allocation sub-field in the second control signal field, and each of the at least one RU allocation sub-field has a length of 9 bits and includes location information of an RU allocated for the receiving STA,
wherein the MU-MIMO based PPDU does not include the RU allocation sub-field in the second control signal field and includes information overflowed from the first control signal field and information related to a plurality of users, wherein the SU PPDU and the NDP PPDU do not include the RU allocation sub-field in the second control signal field and include information overflowed from the first control signal field.

10 . The STA of claim 6 , wherein the first control signal field is configured based on two consecutive symbols, and each of the two consecutive symbols is used for 26-bit information.

11 . A method for by a transmitting station (STA) in a wireless local area network, the method comprising:
configuring, by the transmitting STA, a transmission physical protocol data unit (PPDU), wherein the transmission PPDU includes a first control signal field for interpreting the transmission PPDU, a second control signal field including additional control information for the transmission PPDU, and a data field, wherein the first control signal field includes a type field having 2-bit information related to a type of the transmission PPDU, wherein type field is set to have a first value for the transmission PPDU being configured based on an orthogonal frequency division multiple access (OFDMA), wherein type field is set to have a second value for the transmission PPDU being configured based on a multi-user multiple input multiple output (MU-MIMO), wherein type field is set to have a third value for the transmission PPDU being configured based on a single user (SU) PPDU or a null data packet (NDP) PPDU; and transmitting, by the transmitting STA, the transmission PPDU to a receiving STA.

12 . The method of claim 11 , wherein the transmission PPDU is an extremely high throughput (EHT) PPDU, the first control signal field is a universal signal (U-SIG) field, and the second control signal field is an EHT-SIG field.

13 . The method of claim 11 , wherein the first control signal field includes a 1-bit control field continuous to the type field, and the 1-bit control field includes one of control information related to a hybrid automatic repeat request (HARQ) technique applied to the transmission PPDU and control information related to a Multi-Access Point (Multi-AP) transmission technique applied to the transmission PPDU.

14 . The method of claim 11 , wherein the transmission PPDU being configured based on the OFDMA includes at least one resource unit (RU) allocation sub-field in the second control signal field, and each of the at least one RU allocation sub-field has a length of 9 bits and includes location information of an RU allocated for the receiving STA,
wherein the transmission PPDU being configured based on the MU-MIMO does not include the RU allocati

Assignees

• Lg Electronics Inc

Inventors

• Lim Dongguk
• Chun Jinyoung
• Choi Jinsoo
• Park Eunsung

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title