Wireless communication method and wireless communication terminal for spatial reuse operation
The present invention relates a wireless communication method and a wireless communication terminal for supporting a spatial reuse operation of an overlapping basic service set to efficiently use a wireless resource. To this end, provided are a base wireless communication terminal including: a processor; and a communication unit, wherein the processor receives a PHY protocol data unit (PPDU) through the communication unit, determines whether the PPDU contains an intra-BSS frame or contains an inter-BSS frame based on preamble information of the PPDU, and performs either a first operation or a second operation distinct from each other according to a determination result and a wireless communication method using the same.
1. A wireless communication terminal, the terminal comprising:
a processor; and
a communication unit,
wherein the processor is configured to:
receive a PHY protocol data unit (PPDU), and
classify the PPDU into an inter-BSS PPDU or an intra-BSS PPDU according to an intra-BSS condition or an inter-BSS condition,
wherein whether each of the inter-BSS condition or the intra-BSS condition is satisfied is determined based on a BSS color of a BSS color field included in a HE-SIG-A when the HE-SIG-A of the PPDU includes the BSS color field, and
wherein whether the PPDU is the intra-BSS PPDU or the inter-BSS PPDU is classified by a condition of a MAC address among the intra-BSS condition and the inter-BSS condition when the PPDU is identified as the inter-BSS PPDU according to the inter-BSS condition and is identified as the intra-BSS PPDU according to the intra-BSS condition, respectively.
2. The wireless communication terminal of claim 1 ,
wherein the intra-BSS condition is used to determine whether the PPDU is the intra-BSS PPDU, and
wherein the inter-BSS condition is used to determine whether the PPDU is the inter-BSS PPDU.
3. The wireless communication terminal of claim 1 ,
wherein whether the inter-BSS condition is satisfied is determined based on a high efficiency(HE)-signal(SIG)-B of the PPDU, when the PPDU is an HE multi-user (MU) PPDU.
4. The wireless communication terminal of claim 1 ,
wherein whether the PPDU is an inter-BSS PPDU or an intra-BSS PPDU is classified based on whether a value related to an association identifier(AID) included in the PPDU equals to a value assigned by a BSS associated with the base wireless communication terminal, when whether each the inter-BSS condition and the intra-BSS condition is satisfied is based on a value related to the AID included in the PPDU.
5. The wireless communication terminal of claim 1 ,
wherein the inter-BSS condition is based on information of a MAC address field of a MAC frame contained in the PPDU,
wherein the intra-BSS condition is based on a BSS color of a BSS color field included in a HE-SIG-A, and
wherein the PPDU is determined to include the inter-BSS frame according to the information of the MAC address field of the MAC frame when the PPDU satisfies both the inter-BSS condition by the information of the MAC address field of the MAC frame and the intra-BSS condition by the BSS color of the BSS color field included in the HE-SIG-A.
6. A wireless communication method of a wireless communication terminal, the method comprising:
receiving a PHY protocol data unit (PPDU); and
classifying the PPDU into an inter-BSS PPDU or an intra-BSS PPDU according to an intra-BSS condition or an inter-BSS condition,
wherein whether each of the inter-BSS condition or the intra-BSS condition is satisfied is determined based on a BSS color of a BSS color field included in a HE-SIG-A when the HE-SIG-A of the PPDU includes the BSS color field, and
wherein whether the PPDU is the intra-BSS PPDU or the inter-BSS PPDU is classified by a condition of a MAC address among the intra-BSS condition and the inter-BSS condition when the PPDU is identified as the inter-BSS PPDU according to the inter-BSS condition and is identified as the intra-BSS PPDU according to the intra-BSS condition, respectively.
7. The wireless communication method of claim 6 ,
wherein the intra-BSS condition is used to determine whether the PPDU is the intra-BSS PPDU, and
wherein the inter-BSS condition is used to determine whether the PPDU is the inter-BSS PPDU.
8. The wireless communication method of claim 6 ,
wherein whether the inter-BSS condition is satisfied is determined based on a high efficiency(HE)-signal(SIG)-B of the PPDU, when the PPDU is an HE multi-user (MU) PPDU.
9. The wireless communication method of claim 6 ,
wherein whether the PPDU is an inter-BSS PPDU or an intra-BSS PPDU is classified based on whether a value related to an association identifier(AID) included in the PPDU equals to a value assigned by a BSS associated with the base wireless communication terminal, when whether each the inter-BSS condition and the intra-BSS condition is satisfied is based on a value related to the AID included in the PPDU.
10. The wireless communication method of claim 6 ,
wherein the inter-BSS condition is based on information of a MAC address field of a MAC frame contained in the PPDU,
wherein the intra-BSS condition is based on a BSS color of a BSS color field included in a HE-SIG-A, and
wherein the PPDU is determined to include the inter-BSS frame according to the information of the MAC address field of the MAC frame when the PPDU satisfies both the inter-BSS condition by the information of the MAC address field of the MAC frame and the intra-BSS condition by the BSS color of the BSS color field included in the HE-SIG-A.