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US Patent 6430155 - Congestion avoidance on communications networks
US Patent Issued on August 6, 2002
Estimated Patent Expiration Date:
November 30, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
November 30, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractAn interface (12, 14, or 16) in a service-provider network's transit label-switching router (P2) employs resource-management messages to inform neighbor routers of the bandwidths that it can allocate to various routes that it supports. To allocate its available bandwidth, it employs a weight value set for the route by an ingress router (PE2) in a system to which the label-switching router belongs. The transit router treats the weight as a relative bandwidth: when the sum of the bandwidths requested for various routes exceeds the bandwidth available, the router sets the bandwidths for at least some routes in accordance with the ratio of a given route's weight to the sum of the weights assigned to all routes among which it divides available bandwidth in this manner. That is, it assigns at least some bandwidth to all such routes, regardless of how small the resultant bandwidth may be. In this way, the network can operate with virtually no packet loss and yet remain available to all of its customers.Other References
| InventorsApplicationNo. 201337 filed on 11/30/1998US Classes:370/232Based on data flow rate measurementField of Search370/232, Based on data flow rate measurement370/233, Measurement of the peak data flow rate370/234, Measurement of the average data flow rate370/235, Flow control of data transmission through a network370/235.1, Using leaky bucket technique370/236, Including signaling between network elements370/412, Queuing arrangement370/252, Determination of communication parameters370/242, Fault detection370/352, Combined circuit switching and packet switching709/238, COMPUTER-TO-COMPUTER DATA ROUTING709/239, Alternate path routing709/235, Congestion avoiding709/224, Computer network monitoring709/242, Routing data updating379/221.01, Alternate routing379/221.02, Service provider selection (e.g., local or long distance, primary and alternate carriers)379/221.03, Failure (e.g., disaster, overload, blockage)379/221.04, Restoration (e.g., backup, recovery)379/221.05, Based upon historical data379/221.06, Algorithm (e.g., software, computer program)379/221.07, Parameter optimization or enhancement (e.g., capacity or bandwidth)379/221.08, Advanced intelligent network (AIN)379/221.09, Service control point (SCP, ISCP, external database)379/221.1, Signal transfer point (STP, ISTP)379/221.11, Adjunct or intelligent peripheral (IP)379/221.12, Service switching point (SSP)379/221.13, Local number portability (LNP)379/221.14, Routing parameter (e.g., area code, address, service provider identifier)379/243Class of service determination or transmissionExaminersPrimary: Yao, Kwang BinAssistant: Jones, Prenell Attorney, Agent or FirmUS Patent References5570360, Method and apparatus for implementing communication service contract using cell arrival informationIssued on: 10/29/1996 Inventor: Klausmeier, et al.5748901, Flow control algorithm for high speed networks Issued on: 05/05/1998 Inventor: Afek, et al.5918017, System and method for providing dynamically alterable computer clusters for message routing Issued on: 06/29/1999 Inventor: Attanasio, et al.5920705, Method and apparatus for dynamically shifting between routing and switching packets in a transmission network Issued on: 07/06/1999 Inventor: Lyon, et al.6061330, Flow and congestion control in packet switched networks Issued on: 05/09/2000 Inventor: Johansson6069872, Explicit rate congestion control system and method Issued on: 05/30/2000 Inventor: Bonomi, et al.6285658, System for managing flow bandwidth utilization at network, transport and application layers in store and forward network Issued on: 09/04/2001 Inventor: Packer6295296, Use of a single data structure for label forwarding and imposition Issued on: 09/25/2001 Inventor: Tappan6304574Distributed processing of high level protocols, in a network access server Issued on: 10/16/2001 Inventor: Schoo, et al. International ClassG01R 031/08 |
