Multicast messaging based on distance estimation of network devices
US10813001B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Sep 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless network has a transmitting node that can send a multicast message over the wireless network to a plurality of receiving nodes. Each of the receiving nodes, on receipt of the multicast message, can estimate, based on the receipt of the multicast message, a distance between the transmitting node and the receiving node. If the distance is within a certain distance range from the transmitting node, the receiving node implements a delay of a predetermined amount of time before retransmitting the message to its neighboring nodes. If the distance is beyond that range, the message is retransmitted without delay. All nodes within the distance range implement the same delay before retransmission, however, they may also implement an additional, randomized delay to allow nodes to transmit in several discrete time slots, thereby avoiding or minimizing data collisions with other nodes' transmissions of the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.