CN1889532A - Method for reducing frame relay permanent virtual cascade speech message transmitting time delay - Google Patents
Method for reducing frame relay permanent virtual cascade speech message transmitting time delay Download PDFInfo
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- CN1889532A CN1889532A CNA2006101083187A CN200610108318A CN1889532A CN 1889532 A CN1889532 A CN 1889532A CN A2006101083187 A CNA2006101083187 A CN A2006101083187A CN 200610108318 A CN200610108318 A CN 200610108318A CN 1889532 A CN1889532 A CN 1889532A
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Abstract
A method for decreasing transmission delay of permanent virtual cascaded voice message at frame relay includes energizing flowrate shaping of frame relay, judging whether voice stream in retransmission message is congested or not and directly sending out said voice message if it is not. The steps to judge whether said voice stream in retransmission message is congested or not is also disclosed.
Description
Technical field
The present invention relates to the message forwarding that slow network inserts, relate in particular to the method for a kind of minimizing frame relay (FR, Frame Relay) permanent virtual cascade (PVC, Permanent Virtual Circuit) speech message transmitting time delay.
Background technology
In order to realize the access of slow network, release a kind of novel veneer in the prior art, this veneer is supported low-speed interface, except that forwarding engine, this veneer also increases a CPU button card, be used for finishing the functions such as FR (frame relay) burst reorganization of the QOS (Quality Of Service, service quality rating) and the uplink message of downlink message.
In the message repeating process, when encapsulation frame relay agreement on outgoing interface, and when enabling (enable) frame relay traffic shaping, downlink message will pass through this outgoing interface more earlier through the permanent virtual cascade (being PVC) under the described outgoing interface, forwards at last.Because the bandwidth of outgoing interface is less, if uplink traffic bigger (such as incoming interface is the GE mouth, and the uplink traffic of coming in just may be very big), descending just be easy to take place congested, when exercising the energy frame relay traffic shaping instantly, the PVC under the corresponding outgoing interface just may take place congested.
And for the forwarding of voice message, an important index is exactly that time delay is little.When voice message is transmitted with other data messages, need identify voice message, and guarantee that the time delay of voice message is as far as possible little.
The current general practice is, when enabling frame relay traffic shaping on the outgoing interface that message is transmitted, send the flow of message with token bucket control, the token of token bucket increases by timer and triggers, and promptly being used for and sending token number that message size compares is for a long time an aggregate-value.When the token number of a certain moment token bucket is not enough to send message, message can be put into the formation of corresponding PVC under the corresponding interface.For each PVC, can select different queue types, and also have a RTP formation with every kind of queue type is used, the priority of this formation is the highest, when promptly PVC goes out group at every turn, if it be empty judging the RTP formation, the message of just preferential transmission RTP formation.Because the time delay of voice message will preferentially guarantee, so voice message will send by the RTP formation.That is to say, and have message to need to send, then, all can go into the PVC formation of this message correspondence, wait for scheduling then no matter be what message if the PVC formation is not empty (as long as being that PVC has a formation down not for empty).Go out team's operation and trigger, can create a timer after joining the team by timer, every certain hour, timer triggers, and at this moment, the message of RTP formation can obtain priority scheduling.
Therefore, when voice message and general data message were transmitted together, if the voice message flow is less, and the general data message flow was bigger, will cause the general data message queue that bag is arranged always like this, and the RTP formation seldom has bag.When voice message need send, judge that the PVC formation is not empty (formation that mainly is the general data message is for empty), just can only go into the RTP formation, the scheduling of waiting timer.Though during timer dispatching, voice message can access preferential transmission, dispatching from joining the team to but is the time-delay that there is no need during this period of time.
Summary of the invention
For solving above-mentioned defective of the prior art, the present invention proposes a kind of method that reduces the frame relay permanent virtual cascade speech message transmitting time delay.
The method that the present invention proposes is at the interface that has encapsulated frame relay protocol during as outgoing interface, on this interface, enable frame relay traffic shaping, at this moment, if when entering the stream of router and being the mixed flow of voice message and other data messages, the transmission of assurance voice message is not subjected to the influence of other data messages, go to the PVC rank when message and judge when congested, as long as judge the congested just directly transmission of voice flow.
Above-mentioned purpose of the present invention is finished by the following method.
A kind of method that reduces the frame relay permanent virtual cascade speech message transmitting time delay comprises the following steps: to enable frame relay traffic shaping, judges whether the voice flow in E-Packeting is congested; If not, then directly send described voice message.
In addition, comprise the following steps: also to judge whether the PVC formation is empty, if be empty, then whether the computational token number enough sends message, if enough, then directly sends message, if not enough, then according to type of message it is joined the team; If be not empty, judge then whether the voice flow in E-Packeting is congested.
Wherein, whether congested step comprises the voice flow during described judgement E-Packets: judge whether message is voice message, if judge then whether the RTP formation of PVC is empty; If not, then it is joined the team according to type of message.
Wherein, judge whether the RTP formation is in the step of sky: if for empty, then directly into the RTP formation; If be empty, then whether the computational token number enough sends message, if enough, then directly sends this voice message, if not enough, then directly into the RTP formation.
In addition, describedly judging whether message is the step of voice message, is to judge according to message IP header whether message is the voice message that meets the RTP rule.
In addition, enable frame relay traffic shaping, message downlink is transmitted to be needed to handle through the PVC rank.
Beneficial effect of the present invention is, under voice flow and situation that other data flow are mixed, if PVC is because the general data packet congestion, as long as judge the congested just directly transmission of voice flow.Thereby reduced voice flow message time delay effectively.
Description of drawings
Fig. 1 is a method flow diagram of the present invention.
Embodiment
Core content of the present invention is: when PVC is congested, voice flow is independent of other data flow, for voice flow, only judges that whether congested whether its and computational token enough send message, is not subjected to the influence of common data stream.
Method of the present invention mainly comprises the following steps: to enable frame relay traffic shaping, judges whether the voice flow in E-Packeting is congested; If not, then directly send described voice message.
Wherein, judge whether the voice flow in E-Packeting is congested, judges at first whether message is voice message, if judge then whether the RTP formation of PVC is empty; If not, then it is joined the team according to type of message.And judge whether the RTP formation is empty, if be not empty, then it is joined the team, promptly directly into the RTP formation according to type of message; If be empty, then whether the computational token number enough sends message, if enough, then directly sends this voice message, if not enough, then according to type of message it is joined the team, promptly directly into the RTP formation.
Describe technical scheme of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, it is a method flow diagram of the present invention, and method of the present invention comprises the following steps:
1, enable traffic shaping, message downlink is transmitted to be needed through other processing of PVC level: when message is done frame relay traffic shaping, judge whether the PVC formation is empty, if the PVC formation is not empty, enters 2, otherwise, directly enter 4;
2, judge according to the IP header of message whether message is the voice message that meets the RTP rule, if then enter 3, otherwise enter 5;
3, whether the RTP formation of judging PVC has bag, if having, then enters 5, otherwise, enter 4;
4, judge whether current token number enough sends message, if then directly send, otherwise enter 5;
5, judge that according to type of message which formation message should go into, and joins the team message.
Certainly,, after message is joined the team, how to finish forwarding, belong to the content of prior art, do not repeat them here according to said method.Emphasis of the present invention then is only to judge the whether congested preferential transmission of finishing voice flow of voice flow in the message.
That is to say, when enabling frame relay traffic shaping on the outgoing interface (Frame Relay Interface) that message is transmitted, under voice flow and situation that other data flow are mixed, only judge that whether congested whether voice flow and computational token enough send message, is not subjected to the influence of common data stream.Solve the problem that the voice flow that PVC causes owing to the general data packet congestion in the prior art can't in time send thus, reduced voice flow message time delay effectively.
Need to prove that the foregoing description only is for the present invention is described, but not only limit to this in order to limit protection scope of the present invention, the equalization that any foundation spirit of the present invention and claim are done changes and modifies, and all should be contained in protection scope of the present invention.
Claims (6)
1, a kind of method that reduces the frame relay permanent virtual cascade speech message transmitting time delay is characterized in that comprising the following steps:
Enable frame relay traffic shaping, judge whether the voice flow in E-Packeting is congested;
If not, then directly send described voice message.
2, the method for claim 1 is characterized in that, also comprises the following steps:
Judge whether the PVC formation is empty, if be empty, then whether the computational token number enough sends message, if enough, then directly sends message, if not enough, then according to type of message it is joined the team;
If be not empty, judge then whether the voice flow in E-Packeting is congested.
3, method as claimed in claim 1 or 2 is characterized in that, whether congested step comprises the voice flow during described judgement E-Packets:
Judge whether message is voice message, if judge then whether the RTP formation of PVC is empty; If not, then it is joined the team according to type of message.
4, method as claimed in claim 3 is characterized in that, judges whether the RTP formation is in the step of sky:
If be not empty, then directly into the RTP formation;
If be empty, then whether the computational token number enough sends message, if enough, then directly sends this voice message, if not enough, then directly into the RTP formation.
5, method as claimed in claim 3 is characterized in that, judges whether message is the step of voice message, is to judge according to message IP header whether message is the voice message that meets the RTP rule.
6, the method for claim 1 is characterized in that:
Enable frame relay traffic shaping, message downlink is transmitted to be needed to handle through the PVC rank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101083187A CN100502363C (en) | 2006-08-01 | 2006-08-01 | Method for reducing frame relay permanent virtual cascade speech message transmitting time delay |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101083187A CN100502363C (en) | 2006-08-01 | 2006-08-01 | Method for reducing frame relay permanent virtual cascade speech message transmitting time delay |
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| Publication Number | Publication Date |
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| CN1889532A true CN1889532A (en) | 2007-01-03 |
| CN100502363C CN100502363C (en) | 2009-06-17 |
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| CNB2006101083187A Expired - Fee Related CN100502363C (en) | 2006-08-01 | 2006-08-01 | Method for reducing frame relay permanent virtual cascade speech message transmitting time delay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094181B (en) * | 2007-07-25 | 2010-12-08 | 华为技术有限公司 | Dispatch device and method of enqueuing and dequeuing message |
| CN102308537A (en) * | 2011-07-19 | 2012-01-04 | 华为技术有限公司 | Queue management method, device and system |
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2006
- 2006-08-01 CN CNB2006101083187A patent/CN100502363C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094181B (en) * | 2007-07-25 | 2010-12-08 | 华为技术有限公司 | Dispatch device and method of enqueuing and dequeuing message |
| CN102308537A (en) * | 2011-07-19 | 2012-01-04 | 华为技术有限公司 | Queue management method, device and system |
| WO2012106902A1 (en) * | 2011-07-19 | 2012-08-16 | 华为技术有限公司 | Queue management method, apparatus and system |
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| Publication number | Publication date |
|---|---|
| CN100502363C (en) | 2009-06-17 |
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