Providing target wake time control for reducing traffic latency and/or power consumption

Patent metadata

Field	Value
Publication number	US-12513563-B2
Application number	US-202318106677-A
Country	US
Kind code	B2
Filing date	Feb 7, 2023
Priority date	Aug 7, 2020
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A target wake time (TWT) control method of an electronic device according to an embodiment includes: obtaining a TWT parameter comprising TWT interval information based on a target wake (TWT) agreement with an access point; obtaining the next target wake time (TWT) agreement with an access point; obtaining the next target wake time (TWT) based on the TWT interval information included in the TWT parameter and a traffic state received from the access point; and transmitting a TWT information frame comprising the next target wake time to the access point.

First claim

What is claimed is:

1 . A method of controlling a target wake time (TWT) of an electronic device, the method comprising:
acquiring a TWT parameter comprising TWT interval information based on a TWT agreement with an access point (AP); acquiring a next TWT based on the TWT interval information included in the TWT parameter and a state of traffic received from the AP, wherein the next TWT includes a time after a time longer or shorter than an interval time included in the TWT interval information from a current TWT; and transmitting a TWT information frame comprising the next TWT to the AP, wherein the state of traffic comprises at least one of a latency including an interval between a time point at which traffic arrives at the AP from a server and a time point based on the traffic being transmitted to the electronic device from the AP and/or a traffic load received from the AP.

2 . The method of claim 1 , wherein the acquiring of the next TWT comprises:
identifying a first latency including an interval between a time point at which traffic arrives at the AP from a server and a time point at which the traffic is transmitted from the AP to the electronic device; and acquiring, as a second TWT including the next TWT, a time after a time shorter by a unit time than the interval time included in the TWT interval information from a first TWT including a current TWT, based on the first latency being equal to or greater than a threshold.

3 . The method of claim 2 , further comprising:
acquiring, as a third TWT including the next TWT, a time after a time shorter by a unit time than the interval time included in the TWT interval information from the second TWT based on a second latency identified for the traffic received from the AP after the first TWT service period ends being less than the first latency; and acquiring, as the third TWT including the next TWT, a time after a time longer by the unit time than the interval time included in the TWT interval information from the second TWT based on the second latency being greater than the first latency or based on the traffic being not received during the second TWT service period.

4 . The method of claim 2 , wherein the identifying of the first latency comprises identifying the first latency based on a time stamp of a time point at which the traffic is generated in the server and time information of a time point at which the electronic device receives the traffic from the AP.

5 . The method of claim 1 , wherein the acquiring of the next TWT comprises:
identifying a first latency including an interval between a time point at which traffic arrives at the AP from the server and a time point at which the traffic is transmitted from the AP to the electronic device based on a global stand time shared by the electronic device, the AP, and the server; and acquiring, as the second TWT including the next TWT, a time after a time shorter by the first latency than the interval time included in the TWT interval information from the first TWT including the current TWT based on the first latency being equal to or greater than a threshold.

6 . The method of claim 1 , wherein the acquiring of the next TWT comprises:
receiving, from the AP, information on the first latency including the interval between a time point at which traffic arrives at the AP from the server and a time point at which the traffic is transmitted from the AP to the electronic device; and acquiring, as the second TWT including the next TWT, a time after a time shorter by the first latency than the interval time included in the TWT interval information from the first TWT that is the current TWT.

7 . The method of claim 1 , wherein the acquiring of the next TWT comprises:
acquiring, as the next TWT, a time after a time shorter than the interval time included in the TWT interval information from the current TWT based on the traffic load received from the AP being equal to or greater than a first threshold; and acquiring, as the next TWT, a time after a time longer than the interval time included in the TWT interval information from the current TWT based on the traffic load being less than a second threshold.

8 . The method of claim 7 , further comprising identifying the traffic load based on control information received from a user.

9 . The method of claim 1 , wherein the acquiring of the TWT parameter comprises establishing a TWT agreement with the AP based on an application executed in the electronic device, and acquiring the TWT parameter applied to the TWT agreement.

10 . An electronic device comprising:
a communication module comprising communication circuitry; and a processor operatively connected to the communication module, wherein the processor is configured to: acquire a target wake time (TWT) parameter comprising TWT interval information based on a TWT agreement with an access point (AP), acquire a next TWT based on the TWT interval information included in the TWT parameter and a state of traffic received from the AP, wherein the next TWT includes a time after a time longer or shorter than an interval time included in the TWT interval information from a current TWT, and control the communication module to transmit a TWT information frame comprising the next TWT to the AP, wherein the state of traffic comprises at least one of a latency including an interval between a time point at which traffic arrives at the AP from a server and a time point based on the traffic being transmitted to the electronic device from the AP and/or a traffic load received from the AP.

11 . The electronic device of claim 10 , wherein the processor is configured to:
identify a first latency including an interval between a time point at which traffic arrives at the AP from the server and a time point based on the traffic being transmitted to the electronic device from the AP, and acquire, as a second TWT including the next TWT, a time after a time shorter by a unit time than the interval time included in the TWT interval information from a first TWT including the current TWT based on the first latency being equal to or greater than a threshold.

12 . The electronic device of claim 11 , wherein the processor is configured to:
acquire, as a third TWT including the next TWT, a time after a time shorter by the unit time than the interval time included in the TWT interval information from the second TWT based on a second latency identified for the traffic received from the AP after the first TWT service period ends being less than the first latency, and acquire, as the third TWT including the next TWT, a time after a time longer by the unit time than the interval time included in the TWT interval information from the second TWT based on the second latency being greater than the first latency or based on no traffic being received during the second TWT service period.

13 . The electronic device of claim 11 , wherein the processor is configured to: identify the first latency based on a time stamp at a time point at which the traffic is generated in the server and time information at a time point at which the electronic device receives the traffic from the AP.

14 . The electronic device of claim 10 , wherein the processor is configured to:
identify the first latency including an interval between a time point at which traffic arrives at the AP from the server and a time point at which the traffic is transmitted from the AP to the electronic device based on a global standard time shared by the electronic device, the AP, and the server, and acquire, as a second TWT including the next TWT, a time after a time shorter by t

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Junsu
• Min Hyunkee
• Sung Jihoon
• Lee Sunkey
• Lee Junghun

Classifications

• Y02D30/70

  in wireless communication networks · CPC title

• H04W28/24

  Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service] · CPC title

• H04W28/0236

  radio quality, e.g. interference, losses or delay · CPC title

• H04W52/0212

  managed by the network, e.g. network or access point is leader and terminal is follower · CPC title

• H04W28/02

  Traffic management, e.g. flow control or congestion control · CPC title