Bandwidth allocation method of forwarding and control element separation (ForCES) transmission mapping layer based on stream control transmission protocol (SCTP)

Abstract

The invention discloses a bandwidth allocation method of a forwarding and control element separation (ForCES) transmission mapping layer based on a stream control transmission protocol (SCTP). The method includes the steps of (1), initially, queues are established for control information, event information and redirection information respectively, and a scheduling module sets initial scheduling probabilities for the three classes of the queues; (2), a queue management module calculates a packet loss probability caused by the length changes of the queues according to actual buffering conditions of the queues; (3), a rate estimation module calculates an arrival rate of an information flow and a packet loss probability caused by the change of the arrival rate of the information flow; (4), the scheduling module calculates a total packet loss probability according to the two packet loss probabilities, determines whether the information enqueues according to the total packet loss probability and recalculates scheduling probabilities for the three classes of the information queues; and (5), the scheduling module allocates link bandwidths according to the recalculated scheduling probabilities. According to the bandwidth allocation method of the ForCES transmission mapping layer based on the SCTP, dynamic probability scheduling based on rate and buffer control is used for allocating a link bandwidth between a control element and a forwarding element, so that the usage performance of the bandwidth is improved.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a bandwidth allocation method of an SCTP-based ForCES transmission mapping layer. Background technique [0002] With the rapid expansion of computer network applications such as the Internet, new features and new requirements are constantly emerging and changing, which requires that the new generation of network equipment should be flexible enough to quickly respond to new services and new requirements; It is required that the new generation of network equipment should have enough openness, so that users can flexibly combine according to the open resources to provide different network demand services; it is required that the new generation of network equipment should have sufficient modularity and be standardized through standardization organizations , so that each module can be independently researched and developed by different manufacturers, and can be organically combine...

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Problems solved by technology

This also means that in the case of congestion, if the higher priority channel has a lot of messages, it will always occupy the bandwidth, which will starve the lower priority channel

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