US 12,256,355 B2
Mobile time-sync distribution
Malcolm Muir Smith, Richardson, TX (US); and Jerome Henry, Pittsboro, NC (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on May 22, 2023, as Appl. No. 18/200,231.
Application 18/200,231 is a continuation of application No. 17/555,595, filed on Dec. 20, 2021, granted, now 11,700,590.
Prior Publication US 2023/0300771 A1, Sep. 21, 2023
Int. Cl. H04W 56/00 (2009.01); H04L 43/0864 (2022.01)
CPC H04W 56/009 (2013.01) [H04L 43/0864 (2013.01); H04W 56/005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method performed by a computing device, comprising:
performing, by the computing device, a first time synchronization with a first access point (AP) with which the computing device is connected;
synchronizing a local clock of the computing device with a first clock of the first AP based at least in part on the first time synchronization such that the local clock of the computing device corresponds to the first clock of the first AP;
determining that the computing device is to transition from being connected to the first AP to being connected to a second AP, the determining comprising:
determining a first round trip transmission time between the first AP and the computing device;
determining a second round trip transmission time between the second AP and the computing device; and
determining that the second round trip transmission time is less than the first round trip transmission time;
based at least in part on transitioning from the first AP to the second AP, performing a second time synchronization with the second AP; and
synchronizing the local clock with a second clock of the second AP such that the first clock of the first AP is time synchronized with the second clock of the second AP.