Granted Patent B2

US 12,278,705 · App. 17/774,096 · Granted Apr 15, 2025

Inventors: Yong Ho Kim (Incheon, KR); Yong Su Gwak (Seoul, KR)

Assignees: HYUNDAI MOTOR COMPANY; KIA CORPORATION; KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY—ACADEMIC COOPERATION FOUNDATION

H04L1/16H04W84/12

Abstract

Claims (38)

1. An operation method of a first communication node in a wireless local area network (LAN) system, the operation method comprising:

generating a first data frame including first add block acknowledgment (ADDBA) information;

transmitting the first data frame to a second communication node;

receiving, from the second communication node, a first block acknowledgment (BA) including second ADDBA information generated by the second communication node in response to the first data frame;

transmitting, to the second communication node, a second data frame not including the first ADDBA information in a same BA session as the first data frame; and

receiving, from the second communication node, a second BA not including the second ADDBA information in response to the second data frame,

wherein a transmission/reception operation of the first data frame is performed without a BA agreement operation between the first communication node and the second communication node.

2. The operation method according to claim 1 , wherein the first ADDBA information includes at least one of information indicating a BA timeout value, information indicating a buffer size, information indicating a fragment number, information indicating a starting sequence number, information of a sequence number bitmap, or a combination thereof.

3. The operation method according to claim 2 , wherein the buffer size indicates a maximum number of medium access control (MAC) protocol data units (MPDUs) transmittable in a BA session started by the first data frame.

4. The operation method according to claim 1 , wherein the second ADDBA information includes at least one of information indicating a BA timeout value, information indicating a buffer size, or a combination thereof.

5. The operation method according to claim 1 , wherein the first data frame includes one or more MPDUs, and a number of the one or more MPDUs is determined in consideration of a buffer size of the second communication node.

6. The operation method according to claim 1 , wherein when the first data frame includes a plurality of MPDUs, the first ADDBA information is included in a first MPDU among the plurality of MPDUs.

7. The operation method according to claim 1 , further comprising receiving, from the second communication node, a frame including information indicating a buffer size of the second communication node before transmitting the first data frame, wherein a number of one or more MPDUs included in the first data frame is determined based on the buffer size.

8. The operation method according to claim 1 , wherein a number of one or more MPDUs included in the second data frame is determined based on a buffer size determined through exchanging of the first data frame and the first BA.

9. An operation method of a second communication node in a wireless local area network (LAN) system, the operation method comprising:

receiving, from a first communication node, a first data frame including first add block acknowledgment (ADDBA) information;

generating second ADDBA information in consideration of the first ADDBA information;

transmitting, to the first communication node, a block acknowledgment (BA) including the second ADDBA information in response to the first data frame;

receiving, from the first communication node, a second data frame not including the first ADDBA information in a same BA session as the first data frame; and

transmitting, to the first communication node, a second BA not including the second ADDBA information in response to the second data frame,

wherein a transmission/reception operation of the first data frame is performed without a BA agreement operation between the first communication node and the second communication node.

10. The operation method according to claim 9 , wherein the first ADDBA information includes at least one of information indicating a BA timeout value, information indicating a buffer size, information indicating a fragment number, information indicating a starting sequence number, information of a sequence number bitmap, or a combination thereof.

11. The operation method according to claim 9 , wherein the second ADDBA information includes at least one of information indicating a BA timeout value, information indicating a buffer size, or a combination thereof.

12. The operation method according to claim 9 , wherein the first data frame includes one or more medium access control (MAC) protocol data units (MPDUs), a number of the one or more MPDUs is determined in consideration of a buffer size of the second communication node, and the first ADDBA information is included in a first MPDU among the plurality of MPDUs.

13. The operation method according to claim 9 , further comprising transmitting a frame including information indicating a buffer size of the second communication node before receiving the first data frame, wherein a number of one or more MPDUs included in the first data frame is determined based on the buffer size.

14. A first communication node in a wireless local area network (LAN) system, the first communication node comprising:

a processor; and

a memory storing one or more instructions executable by the processor;

wherein the one or more instructions are executed to:

generate a first data frame including first add block acknowledgment (ADDBA) information;

transmit the first data frame to a second communication node;

receive, from the second communication node, a first block acknowledgment (BA) including second ADDBA information generated by the second communication node in response to the first data frame;

transmit, to the second communication node, a second data frame not including the first ADDBA information in a same BA session as the first data frame; and

receive, from the second communication node, a second BA not including the second ADDBA information in response to the second data frame,

wherein a transmission/reception operation of the first data frame is performed without a BA agreement operation between the first communication node and the second communication node.

15. The first communication node according to claim 14 , wherein the first data frame includes one or more medium access control (MAC) protocol data units (MPDUs), a number of the one or more MPDUs is determined in consideration of a buffer size of the second communication node, and the first ADDBA information is included in a first MPDU among the one or more MPDUs.

16. The first communication node according to claim 14 , wherein the one or more instructions are further executed to receive, from the second communication node, a frame including information indicating a buffer size of the second communication node before transmitting the first data frame, wherein a number of one or more MPDUs included in the first data frame is determined based on the buffer size.

17. The first communication node according to claim 14 , wherein a number of one or more MPDUs included in the second data frame is determined based on a buffer size determined through exchanging of the first data frame and the first BA.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (24)