IP Library › Granted Patent US 12,250,714
Granted Patent B2
US 12,250,714 · App. 17/827,647 · Granted Mar 11, 2025

Wireless communication method and wireless communication terminal in high-density environment including overlapped basic service set

Inventors: Juhyung Son (Gyeonggi-do, KR); Geonjung Ko (Gyeonggi-do, KR); Jinsam Kwak (Gyeonggi-do, KR); Woojin Ahn (Gyeonggi-do, KR)
Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.; SK TELECOM CO., LTD.
H04W74/006H04B7/26H04L27/26H04L69/22H04W24/02H04W28/04H04W28/06H04W52/50H04W74/00H04W74/002H04W74/08H04W74/0816H04W84/12Y02D30/70
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Quick Facts
Patent No.
US 12,250,714
App. No.
17/827,647
Granted
Mar 11, 2025
Kind
B2
Abstract

Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver; and a processor. The processor is configured to receive a signaling field of a first PLCP Protocol Data Unit (PPDU) through the transceiver, and access a channel based on information identifying a Basic Service Set (BSS) indicated by the signaling field.

Claims (26)

1. A wireless communication terminal that communicates wirelessly, the terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to:

receive a signaling field of a PLCP Protocol Data Unit (PPDU) through the transceiver,

obtain a Basic Service Set (BSS) color field from the signaling field, wherein the BSS color field indicates a BSS color which identifies a BSS,

obtain an Address field of a MAC header from the PPDU,

determine that the PPDU includes an Inter-BSS frame when the BSS color indicated by the BSS color field is the same as a BSS color of a BSS including the wireless communication terminal, and the obtained Address field of the MAC header indicates a BSS which is different from the BSS including the wireless communication terminal as a BSS from which the PPDU is transmitted, and

access a channel based on the determination that the PPDU includes an Inter-BSS frame,

wherein the Address field of the MAC header indicates a MAC address related to a MAC Protocol Data Unit (MPDU),

wherein the BSS color of the BSS including the wireless communication terminal is signaled by a base wireless communication terminal which is associated with the wireless communication terminal.

2. The wireless communication terminal of claim 1 , wherein the maximum number of BSSs being able to be identified by the BSS color is smaller than the maximum number of BSSs being able to be identified by the MAC address.

3. The wireless communication terminal of claim 1 , wherein the processor is configured to determine whether the PPDU includes an Inter-BSS frame or an Intra-BSS frame based on at least one of a transmitting STA address (TA) field, a receiving STA address (RA) field, and a BSSID field of the Address field of the MAC header.

4. The wireless communication terminal of claim 1 , wherein the processor is configured to determine, based on the determination that the PPDU includes an Inter-BSS frame, a Clear Channel Assessment threshold which is used for accessing the channel.

5. The wireless communication terminal of claim 1 , wherein the processor is configured to enter a power save mode based on the determination that the PPDU includes an Inter-BSS frame.

6. An operating method of a wireless communication terminal that communicates wirelessly, the method comprising:

receiving a signaling field of a PLCP Protocol Data Unit (PPDU) through the transceiver,

obtaining an Address field of a MAC header from the PPDU,

obtaining a Basic Service Set (BSS) color field from the signaling field, wherein the BSS color field indicates a BSS color which identifies a BSS,

determining that the PPDU includes an Inter-BSS frame when the BSS color indicated by the BSS color field is the same as a BSS color of a BSS including the wireless communication terminal, and the obtained Address field of the MAC header indicates a BSS which is different from the BSS including the wireless communication terminal as a BSS from which the PPDU is transmitted, and

accessing a channel based on the determination that the PPDU includes an Inter-BSS frame,

wherein the Address field of the MAC header indicates a MAC address related to a MAC Protocol Data Unit (MPDU),

wherein the BSS color of the BSS including the wireless communication terminal is signaled by a base wireless communication terminal which is associated with the wireless communication terminal.

7. The operating method of claim 6 , wherein the maximum number of BSSs being able to be identified by the BSS color is smaller than the maximum number of BSSs being able to be identified by the MAC address.

8. The operating method of claim 6 , wherein the accessing the channel comprises determining whether the PPDU includes an Inter-BSS frame or an Intra-BSS frame based on at least one of a transmitting STA address (TA) field, a receiving STA address (RA) field, and a BSSID field of the Address field of the MAC header.

9. The operating method of claim 6 , wherein the accessing the channel comprises determining a Clear Channel Assessment threshold which is used for accessing the channel based on the determination that the PPDU includes an Inter-BSS frame.

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE AGREEMENT DATE OF THE EXCLUSIVE LICENSE NOVEMBER 1, 2022 WRITTEN IN THE RECORDED AGREEMENT SHOULD BE CORRECTED TO AUGUST 31, 2020. PREVIOUSLY RECORDED ON REEL 62152 FRAME 1. ASSIGNOR(S) HEREBY CONFIRMS THE EXCLUSIVE LICENSE. Recorded Feb 26, 2025
From: SK TELECOM CO., LTD.
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Reel/Frame 070827/0861 →
LICENSE Recorded Dec 18, 2022
From: SK TELECOM CO., LTD.
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Reel/Frame 062152/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2022
From: SON, JUHYUNG; KO, GEONJUNG; KWAK, JINSAM; AHN, WOOJIN
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Reel/Frame 060198/0348 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2022
From: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.; SK TELECOM CO., LTD.
Reel/Frame 060385/0227 →
Priority Claims (6)
KR 10-2015-0146203 · Oct 20, 2015 · national
KR 10-2015-0150311 · Oct 28, 2015 · national
KR 10-2015-0154100 · Nov 3, 2015 · national
KR 10-2016-0029975 · Mar 12, 2016 · national
KR 10-2016-0044465 · Apr 11, 2016 · national
KR 10-2016-0062425 · May 20, 2016 · national
Continuity (4)
Continuation 16945937 · Aug 3, 2020
Continuation 15953404 · Apr 14, 2018
Continuation PCTKR2016011854 · Oct 20, 2016
Related Publication 20220287081A1 · Sep 8, 2022
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