Data transmission method and device, chip system, and computer-readable storage medium
This application discloses a data transmission method and device, a chip system, and a computer-readable storage medium. In the method, a station may receive preamble puncturing indication information that includes one or more indicators. An indicator of the one or more indicators corresponds to preamble puncturing information of a data packet. The station sends or receives the data packet based on the preamble puncturing indication information. The preamble puncturing information includes a size and location of preamble puncturing, or that there is no preamble puncturing. The preamble puncturing information may be an index indicated by the preamble puncturing indication information, to learn of a status of preamble puncturing in the data packet.
1. A data transmission method, comprising:
receiving preamble puncturing indication information, wherein the preamble puncturing indication information comprises one or more indicators, an indicator of the one or more indicators corresponds to a piece of preamble puncturing information, and the preamble puncturing information comprises a size and a location of preamble puncturing, or that there is no preamble puncturing; and
sending or receiving a data packet based on the preamble puncturing indication information.
2. The method according to claim 1 , wherein the indicator indicates one or more pieces of the preamble puncturing information in a 160 MHz channel as follows:
a 20 MHz subchannel in the 160 MHz channel;
a 40 MHz subchannel formed by any two 20 MHz subchannels in the 160 MHz channel;
a 60 MHz subchannel formed by any three 20 MHz subchannels in the 160 MHz channel;
an 80 MHz subchannel formed by any four 20 MHz subchannels in the 160 MHz channel; or
there is no preamble puncturing in the 160 MHz channel.
3. The method according to claim 2 , wherein the 160 MHz channel comprises a highest frequency 80 MHz subchannel and a lowest frequency 80 MHz subchannel, and the indicator indicates the piece of the preamble puncturing information in the 160 MHz channel as follows:
a first middle frequency 40 MHz subchannel in the highest frequency 80 MHz subchannel, or a second middle frequency 40 MHz subchannel in the lowest frequency 80 MHz subchannel.
4. The method according to claim 2 , wherein a bandwidth of the data packet is 320 MHz, and the one or more indicators comprise a first indicator and a second indicator, wherein:
the first indicator indicates a first piece of preamble puncturing information in a lowest frequency 160 MHz channel in the 320 MHz bandwidth; and
the second indicator indicates a second piece of preamble puncturing information in a highest frequency 160 MHz subchannel in the 320 MHz bandwidth.
5. The method according to claim 1 , wherein the indicator indicates one or more pieces of the preamble puncturing information in an 80 MHz channel as follows:
a 20 MHz subchannel in the 80 MHz channel;
a 40 MHz subchannel formed by any two 20 MHz subchannels in the 80 MHz channel;
a 60 MHz subchannel formed by any three 20 MHz subchannels in the 80 MHz channel; or
there is no preamble puncturing in the 80 MHz channel.
6. The method according to claim 3 , wherein a bandwidth of the data packet is 240 MHz, and the preamble puncturing indication information comprises a first indicator and a second indicator, wherein:
the first indicator indicates a first piece of preamble puncturing information in a lowest frequency 160 MHz subchannel in the 240 MHz bandwidth; and
the second indicator indicates a second piece of preamble puncturing information in a highest frequency 80 MHz subchannel in the 240 MHz bandwidth.
7. The method according to claim 2 , wherein
a bandwidth of the data packet is 160 MHz, and the one or more indicators comprise a first indicator, wherein the first indicator indicates a first piece of preamble puncturing information in the 160 MHz bandwidth.
8. The method according to claim 5 , wherein a bandwidth of the data packet is 160 MHz, and the one or more indicators comprise a first indicator and a second indicator, wherein:
the first indicator indicates a first piece of preamble puncturing information in a lowest frequency 80 MHz subchannel in the 160 MHz bandwidth; and
the second indicator indicates a second piece of preamble puncturing information in a highest frequency 80 MHz subchannel in the 160 MHz bandwidth.
9. The method according to claim 3 , wherein a bandwidth of the data packet is 160 MHz, and the one or more indicators comprise a first indicator and a second indicator, wherein:
the first indicator indicates a first piece of preamble puncturing information of a first hole in the 160 MHz bandwidth; and
the second indicator indicates a second piece of preamble puncturing information of a second hole in the 160 MHz bandwidth.
10. The method according to claim 1 , wherein:
the one or more indicators comprise a first indicator and a second indicator;
the first indicator indicates the size of preamble puncturing; and
the second indicator indicates the location of preamble puncturing.
11. The method according to claim 10 , wherein
the size of preamble puncturing indicated by the first indicator is 20 MHz, and the location of preamble puncturing comprises:
a 20 MHz subchannel in a bandwidth of the data packet;
the size of preamble puncturing indicated by the first indicator is 40 MHz, and the location of preamble puncturing comprises: a 40 MHz subchannel formed by any two 20 MHz subchannels in the bandwidth of the data packet;
the size of preamble puncturing indicated by the first indicator is 60 MHz, and the location of preamble puncturing comprises: a 60 MHz subchannel formed by any three 20 MHz subchannels in the bandwidth of the data packet; or
the size of preamble puncturing indicated by the first indicator is 80 MHz, and the location of preamble puncturing comprises: an 80 MHz subchannel formed by any four 20 MHz subchannels in the bandwidth of the data packet.
12. The method according to claim 11 , wherein the first indicator or the second indicator further indicates that there is no preamble puncturing.
13. The method according to claim 1 , wherein the sending or receiving the data packet based on the preamble puncturing indication information is performed when the data packet is transmitted in a non-orthogonal frequency division multiple access (non-OFDMA) mode.
14. The method according to claim 1 , wherein the method further comprises:
sending or receiving the data packet based on a resource unit allocation subfield when the data packet is transmitted in an orthogonal frequency division multiple access (OFDMA) mode.
15. The method according to claim 13 , wherein the method further comprises:
receiving transmission mode indication information, wherein the transmission mode indication information indicates a transmission mode of the data packet.
16. The method according to claim 14 , wherein the resource unit allocation subfield comprises a resource unit indicator and a resource unit aggregation indicator, wherein:
when a first resource unit indicated by the resource unit indicator is a 2×996-tone resource unit, the resource unit aggregation indicator indicates one or more of the following resource unit aggregations:
no resource unit is aggregated with the first resource unit;
a second resource unit is aggregated with the first resource unit, wherein the second resource unit is a 484-tone resource unit adjacent to or not adjacent to the first resource unit;
a third resource unit is aggregated with the first resource unit, wherein the third resource unit is a 996-tone resource unit adjacent to a low frequency of the first resource unit, or a 996-tone resource unit adjacent to a high frequency of the first resource unit; or
the second resource unit and the third resource unit are aggregated with the first resource unit.
17. The method according to claim 14 , wherein
when a first resource unit indicated by a resource unit indicator is a 996-tone resource unit, a resource unit aggregation indicator indicates one or more of the following resource unit aggregations:
no resource unit is aggregated with the first resource unit; or
a second resource unit is aggregated with the first resource unit, wherein the second resource unit is a 484-tone resource unit adjacent to or not adjacent to the first resource unit.
18. A data transmission device, comprising a processor, a memory, and a transceiver, wherein
the transceiver is configured to receive preamble puncturing indication information, and send or receive a data packet based on the preamble puncturing indication information, wherein the preamble puncturing indication information indicates preamble puncturing information of the data packet, and the preamble puncturing information comprises a size and a location of preamble puncturing, or that there is no preamble puncturing;
the memory is configured to store program code; and
the processor is configured to invoke the program code from the memory, to perform the following steps:
receiving the preamble puncturing indication information, wherein the preamble puncturing indication information comprises one or more indicators, an indicator of the one or more indicators corresponds to a piece of preamble puncturing information, and the preamble puncturing information comprises the size and location of preamble puncturing, or that there is no preamble puncturing;
sending or receiving the data packet based on the preamble puncturing indication information.
19. The method according to claim 18 , wherein the indicator indicates one or more pieces of the following preamble puncturing information in a 160 MHz channel:
a 20 MHz subchannel in the 160 MHz channel;
a 40 MHz subchannel formed by any two 20 MHz subchannels in the 160 MHz channel;
a 60 MHz subchannel formed by any three 20 MHz subchannels in the 160 MHz channel;
an 80 MHz subchannel formed by any four 20 MHz subchannels in the 160 MHz channel; or
there is no preamble puncturing in the 160 MHz channel.
20. A chip system, comprising a processor and an interface, wherein
the interface is configured to receive preamble puncturing indication information, wherein the preamble puncturing indication information comprises one or more indicators, an indicator of the one or more indicators corresponds to preamble puncturing information of a data packet, and the preamble puncturing information comprises a size and location of preamble puncturing, or that there is no preamble puncturing;
the processor is configured to determine a plurality of allocated resource units based on the preamble puncturing indication information; and
the interface is further configured to send or receive a data packet on the plurality of resource units.