Wireless communication method and wireless communication terminal using same
The present invention relates to a wireless communication method for suggesting a packet preamble structure for efficient communication in a wireless communication environment in which a legacy terminal and a non-legacy terminal are mixed, and a wireless communication terminal using the same. For this, the present invention provides a wireless communication method including: generating a packet including a first preamble and a second preamble, wherein a first symbol and a second symbol of the second preamble are modulated using binary phase shift keying (BPSK); and transmitting the generated packet and a wireless communication terminal using the same.
1. A wireless communication terminal, comprising:
a transceiver; and
a processor;
wherein the processor is configured to:
receive a wireless packet through the transceiver, wherein the wireless packet sequentially includes a legacy signal(L-SIG) field, and a high efficiency signal A(HE-SIG-A) field, and
determine whether the wireless packet is a non-legacy packet based on a repeated L-SIG(RL-SIG) field after the L-SIG field of a legacy preamble of the wireless packet, wherein whether the wireless packet is the non-legacy packet is determined according to whether the wireless packet includes the RL-SIG field, which is a repetition of the L-SIG field, before the HE-SIG-A field.
2. The wireless communication terminal of claim 1 ,
wherein when a first symbol after the L-SIG field of the wireless packet is the RL-SIG field, the wireless packet is determined to be the non-legacy packet.
3. The wireless communication terminal of claim 1 ,
wherein when the wireless packet is determined to be the non-legacy packet, a configuration of a non-legacy preamble of the wireless packet is identified based at least in part on a detected constellation of a specific symbol of the non-legacy preamble.
4. The wireless communication terminal of claim 3 ,
wherein the specific symbol is a third symbol after the L-SIG field of the legacy preamble.
5. The wireless communication terminal of claim 3 ,
wherein when the detected constellation of the specific symbol is a first constellation, the non-legacy preamble contains the HE-SIG-A field composed of four symbols.
6. The wireless communication terminal of claim 5 ,
wherein when the second preamble contains the HE-SIG-A field composed of four symbols, a first symbol and a second symbol of the HE-SIG-A field has same data, and a third symbol and a fourth symbol of the HE-SIG-A field has same data.
7. The wireless communication terminal of claim 5 ,
wherein the first constellation is a quadrature binary phase shift keying.
8. The wireless communication terminal of claim 3 ,
wherein when the detected constellation of the specific symbol is a second constellation, the non-legacy preamble contains a high efficiency signal B (HE-SIG-B) field in addition to an HE-SIG-A field composed of two symbols.
9. The wireless communication terminal of claim 8 ,
wherein the second constellation is a binary phase shift keying.
10. A wireless communication method of a terminal, the method comprising:
receiving a wireless packet, wherein the wireless packet sequentially includes a legacy signal(L-SIG) field, and a high efficiency signal A(HE-SIG-A) field; and
determining whether the wireless packet is a non-legacy packet based on a repeated L-SIG(RL-SIG) field after the L-SIG field of a legacy preamble of the wireless packet, wherein whether the wireless packet is the non-legacy packet is determined according to whether the wireless packet includes the RL-SIG field, which is a repetition of the L-SIG field, before the HE-SIG-A field.
11. The wireless communication method of claim 10 ,
wherein when a first symbol after the L-SIG of the wireless packet is the RL-SIG field, the wireless packet is determined to be the non-legacy packet.
12. The wireless communication method of claim 10 ,
wherein when the wireless packet is determined to be the non-legacy packet, a configuration of a non-legacy preamble of the wireless packet is identified based at least in part on a detected constellation of a specific symbol of the non-legacy preamble.
13. The wireless communication method of claim 12 ,
wherein the specific symbol is a third symbol after the L-SIG field of the legacy preamble.
14. The wireless communication method of claim 12 ,
wherein when the detected constellation of the specific symbol is a first constellation, the non-legacy preamble contains the HE-SIG-A field composed of four symbols.
15. The wireless communication method of claim 14 ,
wherein when the second preamble contains the HE-SIG-A field composed of four symbols, a first symbol and a second symbol of the HE-SIG-A field has same data, and a third symbol and a fourth symbol of the HE-SIG-A field has same data.
16. The wireless communication method of claim 14 ,
wherein the first constellation is a quadrature binary phase shift keying.
17. The wireless communication method of claim 12 ,
wherein when the detected constellation of the specific symbol is a second constellation, the non-legacy preamble contains a high efficiency signal B (HE-SIG-B) field in addition to an HE-SIG-A field composed of two symbols.
18. The wireless communication method of claim 17 ,
wherein the second constellation is a binary phase shift keying.