IP Library › Granted Patent US 12,587,345
Granted Patent B2
US 12,587,345 · App. 18/122,116 · Granted Mar 24, 2026

Wireless communication method using trigger information, and wireless communication terminal

Inventors: Juhyung Son (Gyeonggi-do, KR); Jinsam Kwak (Gyeonggi-do, KR); Geonjung Ko (Seoul, KR)
Assignees: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.; SK TELECOM CO., LTD.
H04L5/0055H04L1/1614H04L1/1664H04L1/1685H04L69/22H04W72/04H04W74/0833
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Quick Facts
Patent No.
US 12,587,345
App. No.
18/122,116
Granted
Mar 24, 2026
Kind
B2
Abstract

Provided is a wireless communication terminal that wirelessly communicates with a base wireless communication terminal. The wireless communication terminal includes: a transceiver; and a processor. The processor is configured to receive trigger information and data from the base wireless communication terminal by using the transceiver, and transmits ACK information indicating whether the data is received to the base wireless communication terminal based on the trigger information. The trigger information is information for triggering transmission of the wireless communication terminal.

Claims (37)

1 . A base wireless communication terminal that wirelessly communicates with a plurality of wireless communication terminal, the base wireless communication terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to:

generate a trigger MAC Protocol Data Unit (trigger MPDU) including trigger information which triggers an uplink (UL) transmission of a wireless communication terminal to the base wireless communication terminal, and includes information on a resource unit (RU) allocated for the UL transmission of the wireless communication terminal and information on an association identifier (AID) of the wireless communication terminal,

transmit a PLCP Protocol Data Unit (PPDU) including an Aggregate-MPDU (A-MPDU) comprising the trigger MPDU including the trigger information and one or more data MPDUs including data to the wireless communication terminal by using the transceiver, and

receive ACK information indicating that the data is received, wherein the ACK information is transmitted from the wireless communication terminal based on the information on the RU,

wherein the A-MPDU includes a plurality of trigger MPDUs including the trigger information,

wherein each of the plurality of trigger MPDUs includes the same trigger information.

2 . The base wireless communication terminal of claim 1 , wherein the processor is configured to transmit one of the plurality of trigger MPDUs as a first MPDU among the plurality of trigger MPDUs and one or more data MPDUs.

3 . The base wireless communication terminal of claim 1 , wherein the processor is configured to insert the trigger information into a MAC header of the one or more data MPDUs.

4 . The base wireless communication terminal of claim 1 , wherein the processor is configured to set an ACK policy of the one or more data MPDUs to be a value which indicates that an immediate response is needed, and

receive the ACK information, within a predetermined time from a time point at an end of transmitting the PPDU, simultaneously with receiving ACK information from the other wireless communication terminal.

5 . A wireless communication terminal that wirelessly communicates with a base wireless communication terminal, the wireless communication terminal comprising:

a transceiver; and

a processor,

wherein the processor is configured to:

receive, from the base wireless communication terminal, a PLCP Protocol Data Unit (PPDU) including an Aggregate-MAC Protocol Data Unit (A-MPDU) which includes a trigger MPDU including trigger information and one or more data MPDUs including data by using the transceiver, wherein the trigger information triggers an uplink (UL) transmission of the wireless communication terminal to the base wireless communication terminal, and includes information on a resource unit (RU) allocated for the UL transmission of the wireless communication terminal and information on an association identifier (AID) of the wireless communication terminal,

obtain the trigger MPDU from the A-MPDU, and

transmit ACK information indicating that the data is received to the base wireless communication terminal based on the information on the RU,

wherein the A-MPDU includes a plurality of trigger MPDUs including the trigger information,

wherein each of the plurality of trigger MPDUs includes the same trigger information.

6 . The wireless communication terminal of claim 5 , wherein one of the plurality of trigger MPDUs is the first MPDU among the plurality of trigger MPDUs and one or more data MPDUs,

wherein the processor is configured to obtain the trigger information from the first MPDU among the plurality of trigger MPDUs and one or more data MPDUs.

7 . The wireless communication terminal of claim 5 , wherein the one or more data MPDUs include a MAC header including the trigger information.

8 . The wireless communication terminal of claim 5 , wherein the trigger information comprises information indicating the one or more RUs allocated to a random access,

wherein the processor is configured to obtain a counter value randomly within a predetermined range, and determine whether to perform a random access based on the counter value and a number of the one or more RUs allocated to the random access.

9 . The wireless communication terminal of claim 5 , wherein the processor is configured to transmit the ACK information, through a RU indicated by the information on the RU, within a predetermined time from a time point at an end of receiving the PPDU.

10 . A method of operating a wireless communication terminal that wirelessly communicates with a base wireless communication terminal, the method comprising:

receiving, from the base wireless communication terminal, a PLCP Protocol Data Unit (PPDU) including an Aggregate-MAC Protocol Data Unit (A-MPDU) which includes a trigger MPDU including trigger information and one or more data MPDUs including data, wherein the trigger information triggers an uplink (UL) transmission of the wireless communication terminal to the base wireless communication terminal, and includes information on a resource unit (RU) allocated for the UL transmission of the wireless communication terminal and information on an association identifier (AID) of the wireless communication terminal,

obtaining the trigger MPDU from the A-MPDU, and

transmitting ACK information indicating that the data is received to the base wireless communication terminal based on the information on the RU,

wherein the A-MPDU includes a plurality of trigger MPDUs including the trigger information,

wherein each of the plurality of trigger MPDUs includes the same trigger information.

11 . The method of claim 10 , wherein one of the plurality of trigger MPDUs is the first MPDU among the plurality of trigger MPDUs and one or more data MPDUs,

obtaining the trigger MPDU from the A-MPDU comprises

obtaining the trigger information from the first MPDU among the plurality of trigger MPDUs and one or more data MPDUs.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 23, 2024
From: SON, JUHYUNG; KWAK, JINSAM; KO, GEONJUNG
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Reel/Frame 066218/0390 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 23, 2024
From: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
To: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.; SK TELECOM CO., LTD.
Reel/Frame 066364/0898 →
Priority Claims (4)
KR 10-2015-0117584 · Aug 20, 2015 · national
KR 10-2015-0120537 · Aug 26, 2015 · national
KR 10-2015-0129366 · Sep 12, 2015 · national
KR 10-2015-0190457 · Dec 30, 2015 · national
Continuity (5)
Continuation 17239596 · Apr 24, 2021
Continuation 16721908 · Dec 19, 2019
Continuation 15898226 · Feb 15, 2018
Continuation PCTKR2016009253 · Aug 22, 2016
Related Publication 20230269055A1 · Aug 24, 2023
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