US 11,758,367 B2
Multicast tree topology having multicast hubs for different multicast areas in a Wi-SUN FAN data network
Lei Zhao, Shanghai (CN); Mingyu Xie, Shanghai (CN); Jianfeng Mao, Shanghai (CN); and Xiang Fang, Shanghai (CN)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on May 10, 2021, as Appl. No. 17/315,459.
Prior Publication US 2022/0360946 A1, Nov. 10, 2022
Int. Cl. H04W 4/06 (2009.01); H04W 40/24 (2009.01); H04L 12/18 (2006.01)
CPC H04W 4/06 (2013.01) [H04W 40/248 (2013.01); H04L 12/189 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
establishing, by a network management device, a wireless multicast tree topology for a wireless mesh network, the wireless multicast tree topology comprising a root network device and wireless multicast hubs providing respective wireless multicast areas, the establishing including selecting each wireless multicast hub based on a corresponding location and a corresponding wireless neighbor count; and
causing, by the network management device, the root network device to unicast transmit to a selected one or more of the wireless multicast hubs a multicast packet encapsulated within a unicast header, the unicast header causing the selected one or more of the wireless multicast hubs to multicast transmit the multicast packet within a corresponding one or more of the wireless multicast areas,
wherein the causing includes:
setting, in each wireless network device in the wireless mesh network, a prioritized multicast retry window size based on a multicast queue size and a multicast device type allocated by the network management device for the corresponding wireless network device, the multicast device type including one of the wireless multicast hubs, a multicast relay, or a wireless leaf device.