US 11,929,916 B2
Method and device for determining time-to-live value of node in multi-hop network
Yufan Lin, Foshan (CN); Yuhang Han, Foshan (CN); and Sicong Yang, Foshan (CN)
Assigned to MIDEA GROUP CO., LTD., Foshan (CN)
Appl. No. 17/623,600
Filed by MIDEA GROUP CO., LTD., Foshan (CN)
PCT Filed Dec. 31, 2019, PCT No. PCT/CN2019/130490
§ 371(c)(1), (2) Date Dec. 29, 2021,
PCT Pub. No. WO2021/103273, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911184571.4 (CN), filed on Nov. 27, 2019.
Prior Publication US 2022/0263748 A1, Aug. 18, 2022
Int. Cl. H04L 45/00 (2022.01)
CPC H04L 45/20 (2013.01) 17 Claims
OG exemplary drawing
 
1. A system for determining a time-to-live (“TTL”) value of a node in a multi-hop network, the system comprising:
a processor in a computer separate from the node, wherein the processor is configured to:
identify a set of nodes each having an unknown TTL value in the multi-hop network, and
configure one node from the set of nodes as a target node; and
a target node, wherein the target node is configured to:
send a packet for requesting a node state to the node in the multi-hop network based on a currently planned TTL value,
acquire the node state fed back by the node,
determine a unicast address feedback list based on the node state,
match, unicast addresses in the unicast address feedback list and unicast addresses in a unicast address scan list corresponding to the target node to obtain a matching result, and
determine a TTL value of the target node based on the matching result;
wherein the unicast address scan list is a list of addresses of all nodes in the multi-hop network that are in a working state detected by the target node.