Traffic flow control and call set-up in multi-hop broadband networks
US5128932A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Aug 27, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5629
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A methodology is disclosed for traffic control administered locally at each individual node in a packet network. Packet level controls at a node pertain to whether to admit a new packet into the network and whether to momentarily detain passing-through packets. The nodes apply the "back-pressure" of congestion on one another and thereby cooperate to smooth traffic and alleviate the accumulation of packets at any single node. The decision process in packet level control involves two basic operations. First, the address of the packet is translated into a binary word via a static routing table and then, secondly, the binary word and control data representative of dynamic traffic information are operated on logically; traffic control decisions, such as detain a passing-through packet or permit entry of a packet into the network, are based primarily on the result of the logical operation. In setting-up a real-time call, a stream, of scout packets representative of the real-time packets is screened for entry into the network as influx packets. If all scout packets are permitted to enter the network in a given time period, then the real-time data packets are cleared for propagation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.