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Method and system of controlling flow in MTP2 protocol

A flow control and protocol technology, applied in the field of communication, can solve problems such as ineffective flow control, and achieve the effect of avoiding further deterioration

Active Publication Date: 2011-04-13
苏州医疗器械产业发展集团有限公司
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Problems solved by technology

[0005] The present invention aims to provide a method and system for flow control in the MTP2 protocol, so as to at least solve the problem that flow control cannot be effectively performed if all nodes in the network do not comply with the conditions of the No. 7 signaling system protocol

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  • Method and system of controlling flow in MTP2 protocol
  • Method and system of controlling flow in MTP2 protocol

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Embodiment Construction

[0016] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0017] figure 2 It is a flowchart of a flow control method in the MTP2 protocol according to an embodiment of the present invention. Such as figure 2 As shown, the method includes:

[0018] Step S202, when the receiving side of MTP2 detects that the node is abnormal, stop sending confirmation messages and keep the backward sequence number corresponding to the number of confirmation messages unchanged;

[0019] Step S204, when the forward sequence number of the sending side of MTP2 increases to the upper limit of the sending window, the receiving side starts sending the confirmation message and increases the backward sequence number one by one;

[0020] In a preferred implementation proces...

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Abstract

The invention discloses a method and a system of controlling flow in a MTP2 protocol. The method comprises the following steps: stopping the operation of sending verification messages and keeping constant of backward sequence numbers corresponding to the number of the verification message when a receiving side of the MTP2 detects that nodes are abnormal; sending the verification messages and gradually increasing the backward sequence number by the receiving side when the forward sequence numbers of the sending side of the MTP2 are increased to the upper limit value of a sending window; and receiving the messages from the sending side by the receiving side, wherein the messages are sent by the sending side one by one according to the received verification messages. The scheme provided by the invention has the advantages that the purpose of controlling the sending flow of the sending side is realized, the influence to the whole network flow control capability in the case that the flow control functions of a plurality of network nodes are faulted is prevented, and the effect for preventing the sending flow of the sending side from aggravating when the network node of the receiving side is abnormal is carried out..

Description

technical field [0001] The present invention relates to the communication field, in particular, to a flow control method and system in the Message Transfer Protocol 2 (Message Transfer Protocol 2, MTP2 for short) protocol. Background technique [0002] In related technologies, the existing flow control mechanism of No. 7 signaling system is as attached figure 1 shown. First, through step 1, signaling point A and signaling point B start to send messages to signaling point D through signaling transfer point C. Step 2. When the signaling transfer point C detects that the message sending buffer or message sending queue on link 3 exceeds the congestion threshold, the signaling transfer point C will send a transfer-controlled message to signaling point A and signaling point B. (TransFer Controlled, TFC for short) message. Step 3: After receiving the TFC message, signaling point A and signaling point B limit the messages sent to signaling point D respectively. Thus, the flow co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L47/27
Inventor 田洪巍吴建成范东明
Owner 苏州医疗器械产业发展集团有限公司
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