A method for state migration of stream control transmission protocol

A technology of flow control transmission and protocol state, which is applied in the direction of transmission system, digital transmission system, error prevention/detection using return channel, etc., and can solve the problem that data cannot be sent successfully

Inactive Publication Date: 2008-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for flow control transmission protocol state migration, which solves the problem that if there is data to be sent to the peer SCTP when the local SCTP receives the SHUTDOWN request from the upper user to close the coupling, and the When the SCTP receiving buffer at the end is small or other factors cause the data to fail to be sent for a long time, the problem that the coupling can be put into use again quickly

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  • A method for state migration of stream control transmission protocol
  • A method for state migration of stream control transmission protocol
  • A method for state migration of stream control transmission protocol

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as image 3 As shown, a method for state transition of a flow control transmission protocol of the present invention includes the following steps,

[0036] Step 100, after the local SCTP receives the SHUTDOWN primitive of the upper-layer user, the coupling enters the SHUTDOWN-PENDING state;

[0037] Step 110, the local SCTP checks whether there is unsent data in the sending buffer, if yes, execute step 120; otherwise, execute step 170;

[0038] Step 120, the local SCTP judges whether the receiving window of the peer SCTP is greater than or equal to the length of the first unsent data in the current sending buffer, if yes, then perform step 130, otherwise, perform step 150;

[0039] The receive window refers to the size of the remaining space in the peer SCTP receive buffer, which is carried in the data response.

[0040] Step 130...

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Abstract

The invention discloses a method of state transition of steam control transmission protocol, which comprises the following steps: after a home terminal SCTP is coupled into SHUTDOWN-PENDING status and when the home terminal SCTP judges that data which is not sent exists in a sending buffer and the receiving window of an opposite terminal SCTP is larger than or equal to the length of the current first datum which is not sent, the home terminal SCTP sends the first datum which is not sent to the opposite terminal SCTP and starts a latency response timer Ta; when the latency response timer Ta is beyond a regular time and if the home terminal SCTP does not receive a response from the opposite terminal, SCTP coupling is closed. The method of the invention ensures that the coupling can be put into use quickly when the home terminal SCTP receives the request to close coupling from SHUTDOWN, the user of an upper level, and if data needs sending to the opposite terminal SCTP and data can not be sent successfully for a long time caused by small receiving buffer of the opposite terminal SCTP or other reasons.

Description

technical field [0001] The invention relates to the technical field of communication circuit switching network and IP network integration, in particular to a SCTP (Stream Control Transmission Protocol, Stream Control Transmission Protocol) state transition method. Background technique [0002] With the gradual maturity of IP network technology, there is a demand for circuit-switched signaling protocols such as No. 7 signaling to be transmitted on the IP network. In order to meet the needs of transmitting signaling protocols on IP networks, the IETF (Internet Engineering Task Force, Internet Engineering Task Force) network working group established a special signaling transmission group, and the IP network signaling transmission protocol (SIGTRAN protocol) they formulated ) supports transmission of traditional circuit-switched signaling over an IP network. In 2000, the IETF working group officially released the SCTP protocol (see RFC (Request For Comments) 4960 for the lates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L1/18H04L1/16H04L47/27
CPCH04L47/27H04L29/06095H04L29/06517H04L65/608H04L47/10H04L65/602H04L29/06489H04L69/16H04L65/762H04L65/65
Inventor 张坤左梁庆永王科
Owner ZTE CORP
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