Invention Grant
- Patent Title: Localized multicast in a low power and lossy network based on rank-based distance
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Application No.: US16789862Application Date: 2020-02-13
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Publication No.: US11431518B2Publication Date: 2022-08-30
- Inventor: Pascal Thubert , Huimin She , Chuanwei Li , Lele Zhang
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agent Leon R. Turkevich
- Main IPC: H04L12/18
- IPC: H04L12/18 ; H04L12/46 ; H04L45/00 ; H04L1/08

Abstract:
In one embodiment, a method comprises: identifying, by a low power and lossy network (LLN) device in a low power and lossy network, a minimum distance value and a distance limit value for limiting multicast propagation, initiated at the LLN device, of a multicast data message in the LLN; and multicast transmitting, by the LLN device, the multicast data message with a current distance field specifying the minimum distance value and a distance limit field specifying the distance limit value, the multicast transmitting causing a receiving LLN device having a corresponding rank in the LLN to respond to the multicast data message by: (1) determining an updated distance based on adding to the current distance field a rank difference between the receiving LLN device and the LLN device, and (2) selectively retransmitting the multicast data message if the updated distance is less than the distance limit value.
Public/Granted literature
- US20210258182A1 LOCALIZED MULTICAST IN A LOW POWER AND LOSSY NETWORK BASED ON RANK-BASED DISTANCE Public/Granted day:2021-08-19
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