System for synchronous bandwidth allocation in token ring networks
July 30, 2013. Estimated 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.Patent ReferencesPacket data communication system with ring type transmission line Concurrent resource request resolution mechanism Method for transmission of cyclic data Method of and system for implementing multiple levels of asynchronous priority in FDDI networks Communication response control method Prioritizing attributes in integrated services networks Avoidance of false re-initialization of a computer network Patent #: 5291491 InventorAssigneeApplicationNo. 099918 filed on 07/30/1993US Classes:370/236, Including signaling between network elements370/452, On ring or loop370/468, Assignment of variable bandwidth or time period for transmission or reception370/503SynchronizingExaminersPrimary: Olms, Douglas W.Assistant: Hom, Shick Attorney, Agent or FirmInternational ClassH04J 003/02AbstractA system is provided for generating the minimum synchronous bandwidth allocation hi for token ring networks in which this minimum bandwidth allocation is utilized by the node to request appropriate synchronous bandwidth reservation from the network manager. This permits the synchronous bandwidth allocation hi to be set dependent upon the minimum message generation period, T, the maximum message transmission time, C, the requested message delivery delay bound, d, and the target token rotation time of the network, TTRT. The system is not limited to d=T as is common in prior systems, but rather accommodates any value of d. As a result, the system is both simpler to implement, and covers many more applications having different message delivery time constraints. The calculation of hi is done by ensuring that the time that a node is allowed to transmit messages in the worst-case is no smaller than the time that the node needs to satisfy the message delivery time constraints.Other References
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