Packet transmission method, apparatus, and system in multicast domain name system
US9774563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2016 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Feb 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/59
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A packet transmission method, apparatus, and system in a multicast domain name system (mDNS), which are used to resolve a network bandwidth waste problem due to much service information needs to be transmitted in an mDNS-based network. The method includes, converting, by a relay, a known-answer service query packet that is sent by a user terminal and used to query service information in an mDNS, into a unicast known-answer service query packet and sending the unicast known-answer service query packet to a gateway, receiving, by the relay, a unicast known-answer service answer packet that is sent by the gateway and includes service information unknown to the user terminal, and converting, by the relay, the unicast known-answer service answer packet into a multicast known-answer service answer packet and sending the multicast known-answer service answer packet to the user terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.