SIG configuration in wireless local area network
The present specification relates to a signaling field supporting various transmission methods in a wireless LAN system. The wireless LAN system may support a new transmission method in addition to the basic transmission method, and the configuration of a signaling field may be changed for the new transmission method. The present specification proposes an example of improving a specific field of the Universal Signal (U-SIG) field to support various configurations of the signaling field. For example, based on the validate bit value of the U-SIG field, contents of various SIG fields may be changed, additional SIG fields may be inserted, or various transmission modes may be indicated.
1. A method in a wireless local area network system, the method comprising:
configuring, by a transmitting station (STA), an Extremely High Throughput Physical Protocol Data Unit (EHT PPDU),
wherein the EHT PPDU includes a legacy signal field, a repeated legacy signal field in which the legacy signal field is contiguous and the legacy signal field is repeated, and a Universal Signal (U-SIG) contiguous to the repeated legacy signal field,
wherein the U-SIG field includes control information for interpreting the EHT PPDU,
wherein the U-SIG field includes a first U-SIG signal transmitted through a first symbol and a second U-SIG signal transmitted through a second symbol, wherein the second symbol is contiguous to the first symbol,
wherein the first U-SIG signal is configured based on 26-bits control information including B0 bit to B25 bit,
wherein the B20 bit to the B24 bit are reserved bits that are configured to be ignored in a receiving operation of a receiving STA,
wherein the B25 bit of the first U-SIG signal is a reserved bit and includes information regarding whether the EHT PPDU relates to a first release or a second release,
wherein, based on the B25 bit of the first U-SIG signal having a first value for the first release, the EHT PPDU is set to the EHT PPDU related to the first release,
wherein, based on the B25 bit of the first U-SIG signal having a second value for the second release, the EHT PPDU is set to the EHT PPDU related to the second release,
wherein the EHT PPDU related to the second release includes a first EHT SIG field and a second EHT SIG field,
wherein the first EHT SIG field includes first control information regarding the EHT PPDU related to the first release, and
wherein the second EHT SIG field includes second control information regarding a number of spatial streams for up to sixteen spatial streams; and
transmitting, by the transmitting STA, the EHT PPDU to the receiving STA.
2. The method of claim 1 ,
wherein the second U-SIG signal includes a first type of 26-bits control information for the first release, and
wherein the second U-SIG signal includes a second type of 26-bits control information for the second release.
3. A transmitting station (STA) in a wireless local area network (WLAN) system, the transmitting STA comprises:
a transceiver for transmitting and/or receiving a radio signal; and
a processor being operably coupled to the transceiver, wherein the processor is configured to:
configure an Extremely High Throughput Physical Protocol Data Unit (EHT PPDU),
wherein the EHT PPDU includes a legacy signal field, a repeated legacy signal field in which the legacy signal field is contiguous and the legacy signal field is repeated, and a Universal Signal (U-SIG) contiguous to the repeated legacy signal field,
wherein the U-SIG field includes control information for interpreting the EHT PPDU,
wherein the U-SIG field includes a first U-SIG signal transmitted through a first symbol and a second U-SIG signal transmitted through a second symbol, wherein the second symbol is contiguous to the first symbol,
wherein the first U-SIG signal is configured based on 26-bits control information including B0 bit to B25 bit,
wherein the B20 bit to the B24 bit are reserved bits that are configured to be ignored in a receiving operation of a receiving STA,
wherein the B25 bit of the first U-SIG signal is a reserved bit and includes information regarding whether the EHT PPDU relates to a first release or a second release,
wherein, based on the B25 bit of the first U-SIG signal having a first value for the first release, the EHT PPDU is set to the EHT PPDU related to the first release,
wherein, based on the B25 bit of the first U-SIG signal having a second value for the second release, the EHT PPDU is set to the EHT PPDU related to the second release,
wherein the EHT PPDU related to the second release includes a first EHT SIG field and a second EHT SIG field,
wherein the first EHT SIG field includes first control information regarding the EHT PPDU related to the first release, and
wherein the second EHT SIG field includes second control information regarding a number of spatial streams for up to sixteen spatial streams; and
control the transceiver to transmit the EHT PPDU to the receiving STA.
4. The STA of claim 3 ,
wherein the second U-SIG signal includes a first type of 26-bits control information for the first release, and
wherein the second U-SIG signal includes a second type of 26-bits control information for the second release.
5. A method in a wireless local area network system, the method comprising:
receiving, by a receiving station (STA), an Extremely High Throughput Physical Protocol Data Unit (EHT PPDU) from a transmitting STA,
wherein the EHT PPDU includes a legacy signal field, a repeated legacy signal field in which the legacy signal field is contiguous and the legacy signal field is repeated, and a Universal Signal (U-SIG) contiguous to the repeated legacy signal field,
wherein the U-SIG field includes control information for interpreting the EHT PPDU,
wherein the U-SIG field includes a first U-SIG signal transmitted through a first symbol and a second U-SIG signal transmitted through a second symbol, wherein the second symbol is contiguous to the first symbol,
wherein the first U-SIG signal is configured based on 26-bits control information including B0 bit to B25 bit,
wherein the B20 bit to the B24 bit are reserved bits that are configured to be ignored in a receiving operation of the receiving STA,
wherein the B25 bit of the first U-SIG signal is a reserved bit and includes information regarding whether the EHT PPDU relates to a first release or a second release,
wherein, based on the B25 bit of the first U-SIG signal having a first value for the first release, the EHT PPDU is set to the EHT PPDU related to the first release,
wherein, based on the B25 bit of the first U-SIG signal having a second value for the second release, the EHT PPDU is set to the EHT PPDU related to the second release,
wherein the EHT PPDU related to the second release includes a first EHT SIG field and a second EHT SIG field,
wherein the first EHT SIG field includes first control information regarding the EHT PPDU related to the first release, and
wherein the second EHT SIG field includes second control information regarding a number of spatial streams for up to sixteen spatial streams; and
decoding, by the receiving STA, the EHT PPDU based on the U-SIG field.