Network-assisted routing for topology-aware overlay networks
US8861527B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2012 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Nov 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An overlay network has a hierarchical cluster tree (HCT) structure on an underlying physical network, the HCT structure having clusters of local area networks (LANs) associated with respective sub-spaces of a hash key space. A cluster proxy node (CP) maintains a routing table and channels to both a parent cluster and member LANs, with routing information associating each LAN with a physical-network address (PA) of a corresponding LAN representative node (LR). Nodes sending routing request messages each containing a key value to the CP node, which returns routing response messages each including PA information from the routing table and/or the parent cluster. The PA information in the response for a given request includes a PA of an LR of a request-specific LAN whose sub-space contains the key value in the request message. A node uses the PA information to send a message to the LR node using the physical network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.