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Overload control method for conversation launching protocol signaling network

A technology of session initiation protocol and overload control, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of proxy call access volume jitter, etc., and achieve the suppression of throughput jitter, low user response delay, good performance effect

Inactive Publication Date: 2010-11-10
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Technical problem: the purpose of the present invention is to provide a kind of SIP signaling network overload control method, this method solves the problem that the call access volume jitter occurs in the proxy, and improves the performance

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  • Overload control method for conversation launching protocol signaling network
  • Overload control method for conversation launching protocol signaling network
  • Overload control method for conversation launching protocol signaling network

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Abstract

The invention relates to SIP signaling overload control method for next generation network which comprises following steps: a) setting threshold of upper limit and lower limit T<max> and T<min> of packet queue length in SIP proxy server cache, when queue length is in [T<min>,T<max>], employing overload control; b) when a SIP INVITE message gets to, computing list length Q<len>, Q<len>=Q<len>(1-w)+wq; c)computing service denial probability, that is, service unavailability probability P<ref> according to present list length, when a SIP INVITE demand message gets to proxy, comparing present listlength Q<len> with two thresholds, if Q<len><T<min>, inserting the message in proxy cache list for processing, if Q<len>>T<max>, then denying service, if T<min><=Q<len><=T<max>, determining if denying service and posting back 503 message according to P<ref> computed by P<ref>=((Q<len>-T<min>)(1-P<0>) / (T<max>-T<min>))+P<0>.

Description

A method for controlling overload of session initiation protocol signaling network technical field The present invention relates to the problem of SIP (SessionInitiationProtocol, Session Initiation Protocol) signaling overload control method in the next generation network, and more specifically relates to how to perform overload control on each received request message when the SIP proxy server is overloaded with signaling Methods. Background technique With the continuous growth of network users, the demand for network resources is also increasing, and network congestion has become an important problem that cannot be ignored. The session business initiated by SIP generally has relatively strict restrictions on the success rate and delay of the session. The existing SIP server load control method can no longer meet the needs of massive message processing, and it is urgent to use the corresponding improved overload control mechanism. . Currently, the widely used SIP servi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/08H04L12/861
Inventor 张载龙孙建周奉强张顺颐孙雁飞
Owner NANJING UNIV OF POSTS & TELECOMM
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