Granted Patent B2

US 12,641,638 · App. 18/177,706 · Granted May 26, 2026

Inventors: Abhishek Sehgal (Plano, TX); Ahmed Atef Ibrahim Ibrahim (Plano, TX); Hao Chen (Allen, TX); Boon Loong Ng (Plano, TX)

Assignee: Samsung Electronics Co., Ltd.

H04W74/0808H04W16/02H04W84/12

Abstract

Claims (37)

1 . A method of wireless communication performed by a first-node in a basic service set (BSS), the method comprising:

obtaining, based on transmissions from at least one of other nodes in the BSS or nodes in an overlapping BSS (OBSS), network context information for a network environment around the first node, the network context information being related to at least one of signal strength of the transmissions from the nodes of the OBSS, physical topology of the network environment, or a number of the nodes in the OBSS from which the transmissions are overheard;

updating an OBSS packet detection (PD) threshold for spatial reuse (SR) based on the network context information;

applying fairness tuning on the updated OBSS PD threshold based on a frequency with which OBSS physical layer protocol data units (PPDUs) include signaling prohibiting SR transmissions parallel to the OBSS PPDUs; and

performing, for a transmission to one of the other nodes in the BSS, an SR clear channel assessment (CCA) using the updated and fairness-tuned OBSS PD threshold for detection of packets transmitted by the nodes in the OBSS.

2 . The method of claim 1 , wherein the OBSS PD threshold is updated to maximize channel access for the first node when performing the SR CCA.

3 . The method of claim 1 , further comprising:

monitoring one or more trigger criteria; and

determining, based on the monitored trigger criteria satisfying a trigger condition, to update the OBSS PD threshold.

4 . The method of claim 3 , further comprising:

determining that the monitored trigger criteria no longer satisfy the trigger condition; and

periodically updating the OBSS PD threshold based on the network context information until the determination that the monitored trigger criteria no longer satisfy the trigger condition.

5 . The method of claim 3 , wherein the trigger criteria are related to characteristics of traffic generated by the first node.

6 . The method of claim 3 , wherein the trigger criteria are related to characteristics of channel utilization by the first node or the other nodes in the BSS or OBSS.

7 . The method of claim 3 , wherein the network context information is obtained after the determination to update the OBSS PD threshold.

8 . The method of claim 3 , wherein the network context information is obtained periodically regardless of whether the trigger condition is determined to be satisfied.

9 . The method of claim 1 , further comprising:

updating a respective individual OBSS PD threshold for each of more than one OBSS for which packets are overheard by the first node; and

performing the SR CCA using the respective individual OBSS PD threshold for detection of packets transmitted by the nodes in the respective OBSS.

10 . The method of claim 1 , wherein the first node is an access point (AP) in the BSS.

11 . The method of claim 1 , wherein the first node is a station (STA) in the BSS.

12 . A station (STA) in a basic service set (BSS), the STA comprising:

a transceiver configured to obtain, based on transmissions from at least one of other nodes in the BSS or nodes in an overlapping BSS (OBSS), network context information for a network environment around the STA, the network context information being related to at least one of signal strength of the transmissions from the nodes of the OBSS, physical topology of the network environment around the STA, or a number of nodes in the OBSS from which transmissions are overheard; and

a processor operably coupled to the transceiver, the processor configured to update an OBSS packet detection (PD) threshold for spatial reuse (SR) based on the network context information and apply fairness tuning on the updated OBSS PD threshold based on a frequency with which OBSS physical layer protocol data units (PPDUs) include signaling prohibiting SR transmissions parallel to the OBSS PPDUs,

wherein the transceiver is further configured to perform, for a transmission to one of the other nodes in the BSS, an SR clear channel assessment (CCA) using the updated and fairness-tuned OBSS PD threshold for detection of packets transmitted by the nodes in the OBSS.

13 . The STA of claim 12 , wherein the OBSS PD threshold is updated to maximize channel access for the STA when performing the SR CCA.

14 . The STA of claim 12 , wherein the processor is further configured to:

monitor one or more trigger criteria; and

determine, based on the monitored trigger criteria satisfying a trigger condition, to update the OBSS PD threshold.

15 . The STA of claim 14 , wherein the processor is further configured to:

determine that the monitored trigger criteria no longer satisfy the trigger condition; and

periodically update the OBSS PD threshold based on the network context information until the determination that the monitored trigger criteria no longer satisfy the trigger condition.

16 . The STA of claim 14 , wherein the trigger criteria are related to characteristics of traffic generated by the STA.

17 . The STA of claim 14 , wherein the trigger criteria are related to characteristics of channel utilization by the STA or the other nodes in the BSS or OBSS.

18 . The STA of claim 14 , wherein:

the network context information is obtained after the determination to update the OBSS PD threshold, or

the network context information is obtained periodically regardless of whether the trigger condition is determined to be satisfied.

Assignments (1)

Continuity (2)

References Cited (12)