Wireless communication method and wireless communication terminal using multi-basic service identifier set

Patent metadata

Field	Value
Publication number	US-2018295567-A1
Application number	US-201816000883-A
Country	US
Kind code	A1
Filing date	Jun 5, 2018
Priority date	Dec 9, 2015
Publication date	Oct 11, 2018
Grant date	—

Abstract

Provided is a wireless communication terminal that communicates wirelessly. The terminal includes: a transceiver; and a processor. The processor is configured to receive a frame through the transceiver, determine whether the frame is classified into an Intra-Basic Service Set (BSS) frame or an Inter-BSS frame according to a BSS from which the frame is transmitted, and access a channel according to whether the frame is an Intra-BSS frame or an Inter-BSS frame.

First claim

1 . A wireless communication terminal that communicates wirelessly, the terminal comprising:
a transceiver; and a processor, wherein the processor is configured to receive a frame through the transceiver, determine whether the frame is an Intra-Basic Service Set (BSS) frame or an Inter-BSS frame according to a BSS from which the frame is transmitted, and access a channel according to whether the frame is an Intra-BSS frame or an Inter-BSS frame.

2 . The wireless communication terminal of claim 1 , wherein a BSS of the wireless communication terminal corresponds to a multiple BSS identifier (BSSID) set,
wherein the multiple BSSID set is a set of a BSSID of each of a plurality of BSSs classified into one group, wherein the processor is configured to determine whether the frame is an Intra-BSS frame or an Inter-BSS frame based on a Medium Access Control (MAC) address signaled in a MAC header of the frame and a plurality of BSSIDs included in the multiple BSSID set.

3 . The wireless communication terminal of claim 2 , wherein when the MAC address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, the processor is configured to determine the frame as an Intra-BSS frame.

4 . The wireless communication terminal of claim 3 , wherein when a Transmitter Address or a Receiver Address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, the processor is configured to determine that the frame is an Intra-BSS frame.

5 . The wireless communication terminal of claim 2 , wherein when the frame is an Intra-BSS frame and a receiver address (RA) of the frame does not indicate the wireless communication terminal, the processor is configured to enter a power save state.

6 . The wireless communication terminal of claim 5 , wherein when the MAC address signaled in the MAC header of the frame matches any one of a plurality of BSSIDs included in the multiple BSSID set and the RA of the frame does not indicate the wireless communication terminal, the processor is configured to enter the power save state.

7 . The wireless communication terminal of claim 6 , wherein when a Receiver Address or a Transmitter Address of the frame is one of the plurality of BSSIDs included in the multiple BSSID set and the Receiver Address of the frame is not the MAC address of the wireless communication terminal, the processor is configured to enter the power save state.

8 . The wireless communication terminal of claim 5 , wherein the processor is configured to maintain the power save state during a duration of a PLCP Protocol Data Unit (PPDU) including the frame.

9 . The wireless communication terminal of claim 2 , wherein the processor is configured to separately set a Network Allocation Vector (NAV) for an Intra-BSS frame and a NAV for an Inter-BSS frame.

10 . The wireless communication terminal of claim 9 , wherein when the MAC address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, the processor is configured to set the NAV for the Intra-BSS frame based on the frame.

11 . The wireless communication terminal of claim 2 , wherein a plurality of BSSs corresponding to the multiple BSSID set have the same BSS color value, and
the BSS color is information identifying a BSS signaled in a physical layer signaling field of a PLCP Protocol Data Unit (PPDU) including the frame.

12 . The wireless communication terminal of claim 1 , wherein the processor is configured to apply a first Clear Channel Assessment (CCA) threshold to accessing the channel when the frame is the Intra-BSS frame, and
apply a second CCA threshold to accessing the channel when the frame is the Inter-BSS frame, wherein the second CCA threshold is determined in a Overlapped BSS (OBSS) CCA level range, wherein the OBSS CCA level range includes values equal to or greater than the first CCA threshold.

13 . An operating method of a wireless communication terminal that communicates wirelessly, the method comprising:
receiving a frame; determining whether the frame is an Intra- Basic Service Set (BSS) frame or an Inter-BSS frame according to a BSS from which the frame is transmitted; and accessing a channel according to whether the frame is an Intra-BSS frame or an Inter-B SS frame.

14 . The method of claim 13 , wherein a BSS of the wireless communication terminal corresponds to a multiple BSS identifier (BSSID) set,
wherein the multiple BSSID set is a set of a BSSID of each of a plurality of BSSs classified into one group, wherein the determining whether the frame is an Intra-BSS frame or an Inter-BSS frame comprises determining whether the frame is an Intra-BSS frame or an Inter-BSS frame based on a medium access control (MAC) address signaled in a MAC header of the frame and a plurality of BSSIDs included in the multiple BSSID set.

15 . The method of claim 14 , wherein the determining whether the frame is the Intra-BSS frame or the Inter-BSS frame comprises, when the MAC address signaled in the MAC header of the frame matches one of the plurality of BSSIDs included in the multiple BSSID set, determining the frame as an Intra-BSS frame.

16 . The method of claim 15 , wherein the determining the frame as the Intra-B SS frame comprises, when a Transmitter Address or a Receiver Address signaled in the MAC header of the frame matches any one of the plurality of BSSIDs included in the multiple BSSID set, determining that the frame is an Intra-BSS frame.

17 . The method of claim 14 , further comprising, when the frame is an Intra-BSS frame and a receiver address (RA) of the frame does not indicate the wireless communication terminal, entering a power save state.

18 . The method of claim 17 , wherein the entering the power save state comprises, when the MAC address signaled in the MAC header of the frame matches any one of a plurality of BSSIDs included in the multiple BSSID set and the RA of the frame does not indicate the wireless communication terminal, entering the power save state.

19 . The method of claim 13 , wherein the plurality of BSSs corresponding to the multiple BSSID set have the same BSS color value, and
the BSS color is information identifying a BSS signaled in a physical layer signaling field of a PLCP Protocol Data Unit (PPDU) including the frame.

20 . The method of claim 13 , wherein the accessing the channel comprises
applying a first Clear Channel Assessment (CCA) threshold to accessing the channel when the frame is the Intra-BSS frame, and applying a second CCA threshold to accessing the channel when the frame is the Inter-BSS frame, wherein the second CCA threshold is determined within a OBSS CCA level range, wherein the OBSS CCA level range is equal to or greater than the first CCA threshold.

Assignees

• Wilus Inst Standards & Tech Inc

Inventors

• Ko Geonjung
• Son Juhyung
• Kwak Jinsam
• Ahn Woojin

Classifications

• H04W88/085

  Access point devices with remote components · CPC title

• H04W48/08 Primary

  Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W48/20

  Selecting an access point · CPC title