Signalling method through resource allocation in wireless communication system and wireless communication terminal
Disclosed is a method for receiving data by a terminal in a wireless communication system. The terminal may receive a physical protocol data unit (physical layer protocol data unit: PPDU) from an access point (APAP) and decode the received PPDU. The PPDU may include a universal signal (U-SIG) field and an extremely high throughput (EHT)-SIG field including at least one content channel, and the U-SIG field may include a bandwidth field indicating the total bandwidth via which the PPDU is transmitted. The total bandwidth is divided into at least one segment, and at least one of field among same fields includes same information except for a resource unit allocation (RU allocation) field between a first content channel and a second content channel in the same segment among the at least one segment when the at least one content channel is composed of a first content channel and a second content channel.
1 . A terminal in a wireless communication system, the terminal comprising:
a communication module; and
a processor configured to control the communication module,
wherein the processor configured to:
receive a physical layer protocol data unit (PPDU) from an access point (AP), and
decode the received PPDU,
wherein the PPDU comprises a universal signal (U-SIG) field and an extremely high throughput (EHT)-SIG field comprising at least one content channel,
wherein the PPDU is a PPDU transmitted to a plurality of terminals by a multi-user (MU) transmission operation by the AP,
wherein the U-SIG field comprises a bandwidth field indicating a total bandwidth in which the PPDU is transmitted and a mode field related to a puncturing pattern of a resource unit according to the total bandwidth,
wherein the total bandwidth comprises one or more segments,
wherein the puncturing pattern is identified by a combination of the total bandwidth indicated by the bandwidth field and a value of the mode field, and
wherein a puncturing granularity of the puncturing pattern is determined according to the total bandwidth indicated by the bandwidth field.
2 . The terminal of claim 1 ,
wherein at least one of field among fields of a same type included in a first content channel and a second content channel in the one segment among the one or more segments includes a same value when the at least one content channel is composed of the first content channel and the second content channel, and
wherein the at least one field includes at least one of a low density parity check code (LDPC) extra symbol segment field, a space-time block coding (STBC) field, a pre-FEC padding factor field, or a GI+long training field (LTF) size field.
3 . The terminal of claim 2 ,
wherein each of the first content channel and the second content channel is repeatedly transmitted in each predetermined frequency band within a first segment or a second segment when the one or more segments comprises the first segment and the second segment.
4 . The terminal of claim 3 ,
wherein the at least one field among the fields of the same type included in the first content channel and the second content channel includes a different value between the first segment and the second segment.
5 . The terminal of claim 3 ,
wherein the value of the mode field indicates different puncturing pattern according to the total bandwidth when the total bandwidth indicated by the bandwidth field is different.
6 . The terminal of claim 3 ,
wherein the first content channel and the second content channels transmitted in the first segment comprise a first common field including at least one field comprising the same value, and
wherein the first content channel and second content channels transmitted in the second segment comprise a second common field including at least one field comprising the same value.
7 . The terminal of claim 6 ,
wherein the at least one field included in the first common field and the at least one field included in the second common field includes different information.
8 . The terminal of claim 3 ,
wherein the U-SIG field and/or the EHT-SIG field of the PPDU transmitted in the first segment have values differing from those of the U-SIG field and/or the EHT-SIG field of the PPDU transmitted in the second segment.
9 . The terminal of claim 1 ,
wherein the puncturing pattern indicates a continuous resource pattern to which puncturing is not applied when a value of the mode field is set to a specific value.
10 . The terminal of claim 1 ,
wherein a puncturing according to the puncturing pattern is not applied to a primary channel in the total bandwidth.
11 . The terminal of claim 9 ,
wherein a plurality of resource units comprise the same or different number of tones when the plurality of resource units are allocated to the terminal, and
wherein the plurality of resource units are allocated discontinuously when a value of the mode field is set to a value except for the specific value.
12 . The terminal of claim 1 ,
wherein the U-SIG field comprises a specific field related to whether a resource unit allocation field for resource unit allocation is included in the EHT-SIG field, and
wherein the EHT-SIG field does not include a resource unit allocation field when the specific field indicates application of non-OFDMA (Orthogonal Frequency Division Multiple Access).
13 . The terminal of claim 1 ,
wherein the puncturing granularity of the puncturing pattern is doubled when the total bandwidth indicated by the bandwidth field is doubled from 160 MHz to 320 MHz.
14 . A method for receiving data by a terminal in a wireless communication system, the method comprising:
receiving a physical layer protocol data unit (PPDU) from an access point (AP); and
decoding the received PPDU,
wherein the PPDU is a PPDU transmitted to a plurality of terminals by a multi-user (MU) transmission operation by the AP,
wherein the U-SIG field comprises a bandwidth field indicating the total bandwidth in which the PPDU is transmitted and a mode field related to a puncturing pattern of a resource unit according to the total bandwidth,
wherein the total bandwidth comprises one or more segments,
wherein the puncturing pattern is identified by a combination of the total bandwidth indicated by the bandwidth field and a value of the mode field, and
wherein a puncturing granularity of the puncturing pattern is determined according to the total bandwidth indicated by the bandwidth field.
15 . The method of claim 14 ,
wherein at least one of field among fields of a same type included in a first content channel and a second content channel in the one segment among the one or more segments includes a same value when the at least one content channel is composed of the first content channel and the second content channel, and
wherein the at least one field includes at least one of a low density parity check code (LDPC) extra symbol segment field, a space-time block coding (STBC) field, a pre-FEC padding factor field, or a GI+long training field (LTF) size field.
16 . The method of claim 15 ,
wherein each of the first content channel and the second content channel is repeatedly transmitted in each predetermined frequency band within a first segment or a second segment when the one or more segments comprises the first segment and the second segment.
17 . The method of claim 16 ,
wherein the at least one field among the fields of the same type included in the first content channel and the second content channel includes a different value between the first segment and the second segment.
18 . The method of claim 14 ,
wherein the value of the mode field indicates different puncturing pattern according to the total bandwidth when the total bandwidth indicated by the bandwidth field is different.
19 . The method of claim 16 ,
wherein the first content channel and the second content channels transmitted in the first segment comprise a first common field including at least one field comprising the same value; and
the first content channel and second content channels transmitted in the second segment comprise a second common field including at least one field comprising the same value.
20 . The method of claim 19 , wherein the at least one field included in the first common field and the at least one field included in the second common field includes different information.
21 . The method of claim 16 ,
wherein the U-SIG field and/or the EHT-SIG field of the PPDU transmitted in the first segment have values differing from those of the U-SIG field and/or the EHT-SIG field of the PPDU transmitted in the second segment.
22 . The method of claim 14 ,
wherein the puncturing pattern indicates a continuous resource pattern to which puncturing is not applied when a value of the mode field is set to a specific value.
23 . The method of claim 14 ,
wherein a puncturing according to the puncturing pattern is not applied to a primary channel in the total bandwidth.
24 . The method of claim 22 ,
wherein a plurality of resource units comprise the same or different number of tones when the plurality of resource units are allocated to the terminal, and
wherein the plurality of resource units are allocated discontinuously when a value of the mode field is set to a value except for the specific value.
25 . The method of claim 14 ,
wherein the U-SIG field comprises a specific field related to whether a resource unit allocation field for resource unit allocation is included in the EHT-SIG field, and
wherein the EHT-SIG field does not include a resource unit allocation field when the specific field indicates application of non-OFDMA (Orthogonal Frequency Division Multiple Access).
26 . The wireless communication terminal of claim 14 ,
wherein the puncturing granularity of the puncturing pattern is doubled when the total bandwidth indicated by the bandwidth field is doubled from 160 MHz to 320 MHz.