CN101350785A - Packet transfer device, packet transfer system, packet monitoring method, and call control device - Google Patents

Packet transfer device, packet transfer system, packet monitoring method, and call control device Download PDF

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Publication number
CN101350785A
CN101350785A CNA2008101452462A CN200810145246A CN101350785A CN 101350785 A CN101350785 A CN 101350785A CN A2008101452462 A CNA2008101452462 A CN A2008101452462A CN 200810145246 A CN200810145246 A CN 200810145246A CN 101350785 A CN101350785 A CN 101350785A
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packet
level
probation
priority
monitoring
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CN101350785B (en
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小柳惠津子
宫山哲
森田直孝
森俊介
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Nippon Telegraph and Telephone Corp
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Nippon Telegraph and Telephone Corp
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Priority claimed from JP2003175485A external-priority patent/JP3786934B2/en
Priority claimed from JP2003176432A external-priority patent/JP3786935B2/en
Priority claimed from JP2003176547A external-priority patent/JP3833632B2/en
Priority claimed from JP2003176846A external-priority patent/JP3786936B2/en
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of CN101350785A publication Critical patent/CN101350785A/en
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Abstract

A packet transfer device, an implementing method and a possibility determinign method. A terminal device transfers a packet firstly in a test class. When the communication quality is not sufficient, it is judged whether to perform re-trial in a trial class according to the packet communication amount of the priority class after a predetermined period of time. Moreover, there are provided a line capacity reference not discarding the test class packet and a line capacity reference not discarding the priority class packet. A test class packet exceeding the former is discarded but the packet which has once become a priority class will not be discarded unless the latter is exceeded.

Description

Device, implementation method and possibility that packet is transmitted are determined method
The application be proposed on July 30th, 2003, application number is 03822640.5, name is called the dividing an application of patent application of " communication control method and system, packet forwarding and monitoring method and system ".
Technical field
The present invention relates to definite method, packet transfer device, packet, packet repeater system, packet monitoring method, call control apparatus, monitoring device and the method for retry communication control method and system thereof, packet forwarding possibility.Relating in particular to terminal unit sends the test data bag in pre-stage of communication with the level on probation that is lower than original priority, and result according to examination communication, with the priority of original priority or send a packet with level on probation once more, thus based on terminal unit and guarantee communication quality to award definite method, packet transfer device, packet, packet repeater system, packet monitoring method, call control apparatus, monitoring device and the method that retry communication control method that the reason system is a prerequisite and system thereof, packet are transmitted possibility based on the calling of measuring.
Background technology
Proposed a kind of in the packet repeater system in the past, terminal unit is by sending the test data bag in pre-stage of communication with the level on probation of the priority that is lower than original communication, to determining and to communicate by result of communication, reason control system (for example Viktoria Elek and other two personnel (Gunnar Karlsson are awarded in the leading calling based on measuring of the terminal that communication quality could be guaranteed, Rovert Ronngren), " reason of awarding based on end-to-end measurement is controlled " (Admission control based on end-to-endmeasurements), Infocom2000, the U.S., IEEE, on March 29th, 2000).
The leading reason of awarding based on measuring of this terminal is controlled the communication means that has adopted bandwidth protection (band securing); this method is by condition managing that each communication (here with the data flow synonym) is provided in terminal and the function of awarding reason control; what alleviated communication network awards the reason load, realizes scalability and saves communications cost.
In this system, under the situation of attempting to send again after the test data transmission failure of level on probation, intrasystem each terminal is not by the restriction of the load state of this moment, but retransmission data bag freely, in excess load, packet on probation overflows, and throughput descends.
As mentioned above, the problem for the data packet communication amount increases and throughput descends does not also propose the frequency that a kind of technology can change retry according to throughput, thereby perhaps makes the timing of retry avoid useless conflict synchronously with throughput.
On the other hand, this terminal leading based on awarding in the reason control of measuring, in the packet net is that to adopt Diffserv (Differentiated services) be the priority control formation of Differentiated Services type for the packet transfer device, packet of representative with the router.
As typical object lesson, there be a kind of the existence to transmit the priority and the level on probation of transmitting the test data bag of data flow originally, set the total bandwidth that is limited to priority on the bandwidth and tries out level, and the mechanism that priority was transmitted before level on probation.That is, suppose transmission path, set the higher limit of the total bandwidth of 40Mbps, and in transmission line, had the data flow of priority 3 5Mbps to exist for 100Mbps.If new data stream requires the following bandwidth of 5Mbps, the test data bag that then is used to ask can be transmitted with level on probation, and by giving transmission terminal from receiving terminal with these context notifications, transmission terminal can be provided with new data flow with priority.On the other hand, if require to surpass the data flow of 5Mbps bandwidth, packet deterioration on probation in transmit stage is because this has fail result by the receiving terminal notice, so transmission terminal does not send the data flow of originally wanting.
According to this mechanism, router does not carry out condition managing to each data flow or awards reason and determine, can only carry out the data rate restriction with grade, in comprising the communication system integral body of terminal, realizes awarding reason and determines and guarantee each data-flow quality.
Mechanism as data rate monitoring and data rate restriction, the UPC of ATM is an example with representative, though UPC has stipulated that also monitoring comprises the ATM transfer capability of total bandwidth of the level on probation unit of the priority unit of CLP=0 and CLP=1, but, when violating, even perhaps priority unit is also abandoned, perhaps priority unit is become the non-priority unit.
But, more excellent is that priority traffic is not limited by the upper limit of total bandwidth, in case being awarded the data flow of the priority of reason does not abandon, but the transmission that continues to keep intact, in addition, under specific situation, uncorrelated with the higher limit of total bandwidth, also there is not the experiment process by level on probation but awards the data flow that reason priority is awarded reason at once.Below with three kinds of examples this particular case is described.
The situation of bandwidth variations of having enumerated adaptive-bandwidth type data flow is as first example.Considered that in the communication that digital data stream speed changes, actual communication bandwidth drops to than the low situation of communication bandwidth under the test packet.For example, for the upper limit of 40Mbps, under the situation of the data flow of having set 10 4Mbps bandwidth, make bandwidth drop to 3.5Mbps respectively.So actual total utilized bandwidth is 35Mbps, has produced the vacant of 5Mbps.Because in this state, if set the new data stream of 5Mbps,, then on bandwidth, produce this moment vacantly if send the test data bag of the level on probation of 5Mbps, so be that quality is good certainly, and actual new priority traffic is set at receiving terminal.But afterwards, if each data stream recovery arrives the 4Mbps of communication bandwidth originally, then total bandwidth becomes 45Mbps, and in the prior art, the part that has surpassed the 5Mbps of bandwidth upper limit 40Mbps is abandoned.In this case, can influence all data flow, and the communication network throughput is significantly descended.As the method that solves it, considered a kind of transmission of in greater than the bandwidth of script data stream bandwidth, carrying out the test data bag.That is, in above-mentioned example, send the test data bag and avoid the problems referred to above with 6Mbps greater than script 5Mbps digital data stream speed.Yet the technology of stablizing the amount of information of whole network has increased the number of the test data bag of each data flow greatly.In addition, this technology often can not be set up new data flow, particularly comprises the access portion of narrow bandwidth.Perhaps,, a kind ofly subdue the method that the traffic changes by the Measuring Time that prolongs the test data bag though have as the method that solves it,, the possibility time of determining to set up data flow is elongated, and therefore reliability worsens.
Therefore, under relevant situation, it is desirable to have nothing to do, also can continue to transmit in case the data flow of the priority that receives with keeping intact with 5Mbps with the variation of data traffic.
In addition, in following the 2nd example and the 3rd example, relate to,, and award the reason priority traffic immediately also not by the restriction of the higher limit of total bandwidth not by the test method of level on probation.
That is,, enumerated the situation of forcing commutation circuit as the 2nd example.In the past, there was a kind of mode of having considered to produce the situation of fault and having set standby telecommunication circuit.Particular content is supposed to prepare two circuit between two data packet forwarding apparatus 11h, 11i as shown in figure 18, connects each circuit that is dispersed in of data flow by making load data stream someway.Under this state, produced under the situation of fault at a side circuit (for example circuit A), the data flow X that transmits through this circuit A can not be forwarded to fully in the stand-by circuit (for example circuit B).But stand-by circuit (circuit B) has existed under the situation of data flow Y before fault produces, and the summation that has produced them has surpassed the capacity of a circuit, and data flow X still is, and Y has produced the problem of abandoning.That is, in above-mentioned example, in two circuit, set the upper limit of 40Mbps respectively, and with the packet of 35Mbps forwarding priority.If producing fault in the circuit a certain side under this state, then will on common circuit, attempt to transmit the packet of the priority of 70Mbps, and the packet that the upper limit 40Mbps that surpasses bandwidth constraints is equivalent to 30Mbps will be abandoned.But, in fact, in this case, to abandoning of particular data current limit, if can not be by the information on the router stores data flow then just can not realize that corresponding infringement can involve all data flow, and the communication network throughput is significantly descended.
Therefore, in this case,, make the data flow of priority in new circuit, continue to transmit at least even after being transformed into another circuit, surpassed the capacity of circuit from faulty circuit.But in this case, the data flow that should switch is not passed through the flow process with level retry on probation, and must make its continuation of keeping intact under priority.
In addition, as the 3rd example, enumerated the situation that realizes the transfer in the portable terminal.In above-mentioned prior art, under the situation of the transfer of having supposed portable terminal, resend the test data bag to the new communication path that act as destination path, and determine and to communicate by letter, if but in the new traffic circuit, used to the upper limit at the priority data bag, and new data flow hands under the situation on the communication path, and the data flow of transfer does not have to good quality, and communication quality worsens.And, identical with above-mentioned 2 examples, the data flow that is not limited to transfer, but can cause the data-flow quality of all total same circuits to worsen.
Therefore, identical with above-mentioned the 2nd example, no matter it is desirable to the higher limit of circuit capacity, in new communication path, immediately the data flow of transferring is continued with priority.
Equally, the leading calling based on measuring of above-mentioned existing terminal is awarded the reason system and is had following problem.
That is,, transmitting the test data bag, and terminal provides under the situation of common communication service with fully independently and distributed method, and following situation is arranged by the priority lower than the priority data bag of communication originally as above-mentioned prior art.In a word, in order to carry out actual flow control, carried out comprising that at call control apparatus serving the sure reason of agreeing of mainly awarding determines, and the packet traffic volume of the necessary monitor user ' of edge (edge) packet transfer device, packet, and the conversion of necessary monitoring priority.Call control apparatus must be controlled the marginal date packet forwarding apparatus always, thus marginal date packet forwarding apparatus correct execution monitoring task.Thus, call control apparatus must carry out frequent control signal exchange with the marginal date packet forwarding apparatus, and the result has increased necessary communication bandwidth and awarded the reason load.
In addition, in the packet data flow monitoring of existing quality assurance type packet repeater system, the maximum of measurement data flow velocity only.But under the leading situation of awarding reason control based on measurement of terminal, the terminal reduction traffic or abort communication can be confirmed as communication network and be upstate.Therefore, the test data of other-end transmission at this moment bag is awarded to manage and is new communication.
In addition, award in the reason control system, also have following requirement in the leading calling of above-mentioned existing terminal based on measuring.
That is, the reason control system is awarded in the leading calling based on measuring of disclosed terminal in the above-mentioned document, because following feature makes the precise monitoring that terminal operation is carried out become necessary.In this system, transmission ends before setting up communication, send the test data bag and certainly state, the transmission ends corresponding data bag accepting state of the packet that correctly receives to the transmission ends notice of communication quality, receiving terminal determine could communication session to send rule the communication session packet, the communication session packet of rule is sent these with the bandwidth narrow but more not too narrow than the bandwidth that is used for the test data bag all is the terminal necessary condition of correctly working.Therefore, the more existing network leading type of this communication system is called out and is awarded the reason control system, must monitor terminal operation under more detailed grade, and whether suitable work has realized influencing the System Operation cost effectively with these conditions in this system.But, award in the reason control system in the leading calling of the terminal that it was suggested based on measuring, detailed research is not carried out in this terminal monitoring.
And then, award in the reason control system in the leading calling of above-mentioned terminal based on measuring, under the situation of coming the monitoring terminal operation by the monitoring device in the network, the deterioration of the part between can't from monitoring device, learning from the monitoring device to the receiving terminal.Even do not obtain good quality in this part, the notice that receiving terminal also can be had a mind to good quality.Malicious operation must be monitored like this.
In addition, award in the reason control system in the leading calling of above-mentioned existing terminal based on measuring, the test data bag is set in the level on probation of the priority that is lower than the communication of originally wanting in pre-stage of communication and with its transmission, according to the examination result of communication, send packet in the priority of wanting with test grade or script once more.With such configuration, this system can not determine the timing to the terminal installation charge.
The present invention in view of the above problems, purpose is the communication quality of Monitoring Data packet traffic and packet, carry out the transmission control of packet according to monitoring result, for example, by according to the ending immediately of the retry control of the control of the transmission priority data bag of monitoring result, level packet on probation, level packet on probation, prevent to stop up, improved throughput thus in the terminal information amount according to the synchronized transmission control of probability.
In addition, the present invention is in view of above-mentioned other problems, and purpose is to separate never and is limited by data rate, is the priority data bag and award the reason packet immediately, and the quality of data flow that guarantees to award reason is up to the end of data flow.In addition, the present invention is in view of above-mentioned other problems, purpose is to carry out the leading reason of awarding based on measuring of terminal and controls, it comprises not increasing handles load and transmits test and prioritized data bag with priority separately, and the while is suitably carried out the type service (ToS) of packet and the monitoring of data rate with low cost.
In addition, the present invention is in view of above-mentioned other problems, and purpose is to be provided with the monitoring device of terminal operation, thereby the packet relevant with communication that will monitor is to transmit by monitoring device.Thereby realize concentrated monitoring, when cutting down the packet transfer device, packet equipment cost, also cut down the running cost of packet repeater system.
In addition, another object of the present invention is by determining to award according to the test data bag stage and the monitoring device that carries out the suitable stage separating monitoring of communicating by letter of reason possibility, can enlarge the communication session number that to monitor, and reduce the cost of the monitoring device of each communication session.
Another object of the present invention is by utilizing the test data bag that transmission terminal sends of abandoning that monitoring device has a mind to, and what whether the monitoring receiving terminal was correct is notified to transmission terminal with reception result, can detect malicious action thus.
Summary of the invention
In order to achieve the above object, the data packet communication system that retry communication control method of the present invention is used for possesses a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, and can be according to the packet between the priority level exchange termination device that is assigned to packet.This method comprise from the call source terminal installation at the fixed time the section will try out the level packet send, whether the communication quality of estimating this packet is enough, if it is enough, afterwards the packet of packet as priority sent, if it is not enough, then stop the packet transmission of level on probation in second time period, after the above-mentioned scheduled time of process, data packet communication amount based on the priority that monitors, estimate whether can send the packet of level on probation, be defined as under the passable situation, above-mentioned call source terminal installation sends the packet of level on probation in the given time once again.
In addition, in order to achieve the above object, the data packet communication system that another retry communication control method of the present invention is used for possesses a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, and can be according to the packet between the priority level exchange termination device that is assigned to packet.This method comprise from the call source terminal installation at the fixed time the section will try out the level packet send, whether the communication quality of estimating this packet is enough, if it is enough, afterwards the packet of packet as priority sent, if it is not enough, then stop the packet transmission of level on probation in second time period, after through second predetermined amount of time, grade based on the data packet communication quality of before level on probation, estimate whether can send the packet of level on probation, be defined as under the passable situation, above-mentioned call source terminal installation section at the fixed time sends on probation grade packet once again.
In addition, in order to achieve the above object, the data packet communication system that another retry communication control method of the present invention is used for possesses a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, and can be according to the packet between the priority level exchange termination device that is assigned to packet.This method comprise from the call source terminal installation at the fixed time the section will try out the level packet send, whether the communication quality of estimating this packet is enough, if it is enough, afterwards the packet of packet as priority sent, if it is not enough, then stop the packet transmission of level on probation in second time period, after through second predetermined amount of time, based on the estimated execution probability of data packet communication quality from before level on probation, estimate whether can send the packet of level on probation, be defined as under the passable situation, above-mentioned call source terminal installation section at the fixed time sends on probation grade packet once again.
In addition, in order to achieve the above object, the data packet communication system that another retry communication control method of the present invention is used for possesses a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, and can be according to the packet between the priority level exchange termination device that is assigned to packet.This method comprise from the call source terminal installation at the fixed time the section will try out the level packet begin to send, whether the communication quality of estimating this packet at any time is enough, if enough and enough state continuance preset time sections, the packet of packet as priority sent, if it is not enough, the packet that stops level on probation sends at once, and stop at the packet that second predetermined amount of time sends level on probation, after passing through second predetermined amount of time, estimate whether can send the packet of level on probation, be defined as under the passable situation, above-mentioned call source terminal installation section at the fixed time sends on probation grade packet once again.
In preferred forms of the present invention, from time of packet of beginning forwarding priority, to above-mentioned call source terminal installation charge.
In addition, in order to achieve the above object, the invention provides a retry communication control system, it comprises a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, the packet of level on probation is sent to another terminal installation from a terminal installation, thereby determines to send the packet of priority according to the quality of the packet that sends.This system comprises the equipment that the packet of level on probation is sent in the section at the fixed time; Estimate the whether enough equipment of communication quality of this packet; If enough, afterwards with the equipment of packet as the packet transmission of priority; If then stop inadequately, the equipment of the packet transmission of level on probation at second predetermined amount of time; After through second predetermined amount of time, estimate whether can send the equipment of the packet of trying out level based on the data packet communication amount speed of the priority that monitors; Be defined as under the passable situation, send the equipment of the packet of level on probation at the fixed time in the section once again from the call source terminal installation.
In this preferred forms, each terminal installation all possesses above-mentioned each equipment.
In this preferred forms, each packet transfer device, packet all possesses above-mentioned each equipment.
In this preferred forms, this system also possesses in the moment of the packet of forwarding priority and begins call control apparatus that above-mentioned call source terminal installation is begun to charge.
In addition, in order to achieve the above object, the invention provides another retry communication control system, it comprises a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, the packet of level on probation is sent to another terminal installation from a terminal installation, thereby determines to send the packet of priority according to the quality of the packet that sends.This system comprises: the packet that will try out level is the equipment sent in the section at the fixed time; Estimate the whether enough equipment of communication quality of this packet; If enough, afterwards with the equipment of packet as the packet transmission of priority; If then in second predetermined amount of time, stop inadequately, the equipment that the packet of level on probation sends; After through second predetermined amount of time, estimate whether can to send the equipment of the packet of level on probation based on the communication quality grade of the packet of before level on probation; Be defined as under the passable situation, in above-mentioned predetermined amount of time, sending the equipment of the packet of level on probation from above-mentioned call source terminal installation once again.
In this preferred forms, each terminal installation all possesses above-mentioned each equipment.
In this preferred forms, each packet transfer device, packet all possesses above-mentioned each equipment.
In this preferred forms, this system also possesses in the moment of the packet of forwarding priority and begins call control apparatus that above-mentioned call source terminal installation is begun to charge.
In addition, in order to achieve the above object, another retry communication control system that provides of the present invention, it comprises a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, the packet of level on probation is sent to another terminal installation from a terminal installation, thereby determines to send the packet of priority according to the quality of the packet that sends.This system comprises: the packet that will try out level is the equipment sent in the section at the fixed time; Estimate the whether enough equipment of communication quality of this packet; If enough, afterwards with the equipment of packet as the packet transmission of priority; If then in second predetermined amount of time, stop inadequately, the equipment that the packet of level on probation sends; Through after above-mentioned second predetermined amount of time, based on the execution probability that estimates from the data packet communication quality of transmission level on probation before, whether estimation can send the equipment of on probation grade packet; Be defined as under the passable situation, in above-mentioned predetermined amount of time, sending the equipment of the packet of level on probation from above-mentioned call source terminal installation once again.
In this preferred forms, each terminal installation all possesses above-mentioned each equipment.
In this preferred forms, each packet transfer device, packet all possesses above-mentioned each equipment.
In this preferred forms, this system also possesses in the moment of the packet of forwarding priority and begins call control apparatus that above-mentioned call source terminal installation is begun to charge.
In addition, in order to achieve the above object, the invention provides another retry communication control system, it comprises a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, the packet of level on probation is sent to another terminal installation from a terminal installation, thereby determines to send the packet of priority according to the quality of the packet that sends.This system comprises: the packet that will try out level is the equipment sent in the section at the fixed time; The equipment whether communication quality of this packet of estimation at any time is enough; If the state continuance preset time section that communication quality is enough and enough is with the equipment of packet as the packet transmission of priority; If communication quality is not enough, the packet that then stops above-mentioned level on probation sends, and stops the equipment of the transmission of this packet in second predetermined amount of time at once; By after above-mentioned second predetermined amount of time, estimate whether can send the equipment of the packet of trying out level; Be defined as under the passable situation, in above-mentioned predetermined amount of time, sending the equipment of the packet of level on probation from above-mentioned call source terminal installation once again.In this preferred forms, each terminal installation all possesses above-mentioned each equipment.
In this preferred forms, each packet transfer device, packet all possesses above-mentioned each equipment.
In this preferred forms, this system also possesses in the moment of the packet of forwarding priority and begins call control apparatus that above-mentioned call source terminal installation is begun to charge.
In addition, in order to achieve the above object, the invention provides a method that is implemented in the data packet communication system, this system comprises a plurality of packet transfer device, packets that are connected to network and at least one terminal installation, and it can distribute to priority level exchange data packets between terminal installation of packet.This method makes the data packet communication system carry out: the packet that will try out level is the method that sends from call source terminal terminal of section at the fixed time; Estimate the whether enough methods of communication quality of this packet; If communication quality is enough, afterwards with the method for packet as the packet transmission of priority; If then in second predetermined amount of time, stop inadequately, the method that the packet of level on probation sends; By after above-mentioned second predetermined amount of time, estimate whether can send the method for the packet of trying out level based on the data packet communication data rate of the priority that monitors; Be defined as under the passable situation, in above-mentioned predetermined amount of time, sending the method for the packet of level on probation from above-mentioned call source terminal installation once again.
In addition, in order to achieve the above object, the invention provides a packet forwarding possibility that is used for packet transfer device, packet and determine method, this packet transfer device, packet data-driven bag forwarding priority grade, for example, packet is forwarded to second terminal installation from first terminal installation by level on probation or priority from the forwarding request appointment of first terminal installation.This packet is transmitted possibility and is determined that method comprises: the default level bandwidth capacity on probation of not abandoning the packet of level on probation, and the total data flow velocity of the packet of level on probation and priority surpasses under the situation of above-mentioned level bandwidth capacity on probation, abandons the packet of level on probation.
In the present invention, because bandwidth variations or new transmission request etc. cause the total data flow velocity of level on probation and priority to surpass under the situation of above-mentioned level bandwidth capacity on probation, then abandon a grade packet on probation.
In preferred forms of the present invention, surpass under the situation of above-mentioned level bandwidth capacity on probation in the total data packet data streams speed that comprises new transmission requested packets, when this new data packets is the packet of level on probation, abandon this new data packets, in the packet that is priority, this new data packets is passed through.
In this embodiment, comprise that the total data packet data streams speed of new transmission requested packets surpasses the situation of above-mentioned level bandwidth capacity on probation, if this new data packets becomes the packet of priority, then also makes it pass through.
In preferred forms of the present invention, the also default priority of data packets bandwidth capacity of not abandoning priority, total data packet data streams speed at the packet of the priority that comprises new transmission request surpasses under the situation of priority bandwidth capacity, abandons the packet of this new priority.
In this embodiment, surpass under the situation of above-mentioned level bandwidth capacity on probation,, then also abandon this packet even this new data packets is the packet of priority in the total data packet data streams speed of the packet of the priority that comprises new transmission request.
In preferred forms of the present invention, transmit packet with the data flow that communication bandwidth is variable, enlarging owing to communication bandwidth under the situation that makes above-mentioned total data flow velocity surpass above-mentioned level bandwidth capacity on probation, then abandon the packet of this level on probation.
In the present embodiment, transmit packet, making above-mentioned total data flow velocity surpass above-mentioned level bandwidth capacity on probation owing to communication bandwidth expansion when, if the packet of level on probation is then abandoned it with the data flow that communication bandwidth is variable.
In preferred forms of the present invention, the also default priority of data packets bandwidth capacity of not abandoning priority is enlarging owing to communication bandwidth under the situation that makes above-mentioned total data flow velocity surpass above-mentioned level bandwidth capacity on probation, then abandons the packet of this priority.
In the present embodiment, the default priority of data packets bandwidth capacity of not abandoning priority is when making above-mentioned total data flow velocity surpass above-mentioned priority bandwidth capacity owing to communication bandwidth expansion, even the packet of priority also will be abandoned it.
In preferred forms of the present invention, a terminal installation is made the packet request of transmission level on probation, and the corresponding transmission quality that produces, and makes the packet of transmission priority or the request of the packet of transmission level on probation once again.
In the present invention, terminal installation is applied to the leading reason of awarding based on measuring of terminal and controls, wherein terminal installation is made the request of the packet of transmission level on probation, and the corresponding transmission quality that produces, and makes the packet of transmission priority or the request of the packet of transmission level on probation once again.
In addition, in order to achieve the above object, packet transfer device, packet of the present invention is used for the data-driven bag and transmits priority level, for example by from the forwarding request of first terminal installation specified level on probation or priority, packet is forwarded to second terminal installation from first terminal installation.This packet transfer device, packet comprises: the storage part of the level bandwidth capacity on probation of the packet of not abandoning level on probation of prestoring; Total data flow velocity at level on probation and priority data bag surpasses under the situation of above-mentioned level bandwidth capacity on probation, abandons the data rate monitoring portion of the packet of level on probation.
In the present invention, because bandwidth variations or New Development are referred to asks under the situation that waits the packet total data flow velocity that makes level on probation and priority to surpass above-mentioned level bandwidth capacity on probation, the packet of abandoning trying out grade.
In preferred forms of the present invention, above-mentioned data rate monitoring portion surpasses under the situation of above-mentioned level bandwidth capacity on probation in the total data packet data streams speed that is comprising new transmission requested packets, when this new data packets is the packet of level on probation, then abandon this new data packets, in the packet that is priority, this new data packets is passed through.
In this embodiment, surpass under the situation of above-mentioned level bandwidth capacity on probation in the total data packet data streams speed that comprises new transmission requested packets,, if this new data packets is the packet of priority, it is passed through.
In preferred forms of the present invention, the priority of data packets bandwidth capacity that prestores and do not abandon priority at above-mentioned storage part also, above-mentioned data rate monitoring portion surpasses under the situation of above-mentioned priority bandwidth capacity in the total data packet data streams speed that comprises new transmission requested packets, abandons the packet of this new priority.
In this embodiment, surpass under the situation of above-mentioned priority bandwidth capacity, also will abandon this packet even this new data packets is the packet of priority in the total data packet data streams speed that comprises new transmission requested packets.
In preferred forms of the present invention, transmit packet with the data flow that communication bandwidth is variable, above-mentioned data rate monitoring portion then abandons the packet of above-mentioned level on probation owing to enlarging communication bandwidth above-mentioned total data flow velocity being surpassed under the situation of above-mentioned level bandwidth capacity on probation.
In the present embodiment, transmit packet, making above-mentioned total data flow velocity surpass above-mentioned level bandwidth capacity on probation owing to communication bandwidth expansion when, if the packet of level on probation is then abandoned with the data flow that communication bandwidth is variable.
In preferred forms of the present invention, the priority of data packets bandwidth capacity that prestores and do not abandon priority at above-mentioned storage part also, above-mentioned data rate monitoring portion surpasses under the situation of above-mentioned priority bandwidth capacity above-mentioned total data flow velocity enlarging owing to communication bandwidth, abandons the packet of priority.
In the present embodiment, transmit packet, when making above-mentioned total data flow velocity surpass above-mentioned priority bandwidth capacity, even the packet of priority also will be abandoned owing to communication bandwidth expansion with the data flow that communication bandwidth is variable.
In preferred forms of the present invention, arrangement has the packet that can distinguish forwarding priority and level on probation, and many circuit of monitoring by above-mentioned data rate monitoring portion, if on a circuit, produce fault at least, thereby all data flow of the packet on this at least one faulty circuit are switched to the second circuit at least in other circuit, if and the total data flow velocity of level above-mentioned on probation in above-mentioned second circuit and priority data bag surpasses under the situation of level bandwidth capacity on probation, above-mentioned data rate monitoring portion abandons above-mentioned on probation grade packet.
If at least one circuit breaks down in the present embodiment, then the data flow of the packet in all faulty circuits is transformed into second circuit at least.
In preferred forms of the present invention, above-mentioned terminal installation is the mobile terminal apparatus with the above-mentioned packet of radio transmitting, since by moving of this mobile terminal apparatus caused transfer, the total data flow velocity of above-mentioned level on probation and priority data bag is surpassed under the situation of above-mentioned level bandwidth capacity on probation, and above-mentioned data rate monitoring portion abandons above-mentioned on probation grade packet.
In this embodiment, terminal installation is the mobile terminal apparatus with the above-mentioned packet of radio transmitting, is applicable to the situation that has the transfer of moving of following this mobile terminal apparatus.
In addition, in order to reach above-mentioned purpose, the invention provides a method that is implemented in the packet transfer device, packet, be used for the data-driven bag and transmit priority level, for example, packet is forwarded to second terminal installation from first terminal installation by from the forwarding request of first terminal installation specified level on probation or priority.This method makes packet transfer device, packet carry out following method: the method for presetting the level bandwidth capacity on probation of the packet of not abandoning level on probation; Surpass under the situation of above-mentioned level bandwidth capacity on probation with total data flow velocity, abandon the method for on probation grade packet at the packet of trying out level and priority.
In the present invention, because bandwidth variations or New Development are referred under the situation of asking the total data flow velocity that waits the packet that makes level on probation and priority to surpass above-mentioned level bandwidth capacity on probation, abandon trying out a grade packet.
In addition, in order to achieve the above object, packet repeater system of the present invention comprises a plurality of terminal installations, a plurality of packet transfer device, packets and a call control apparatus, this terminal installation is made the call setup request of transmitting the level on probation of priority level as packet, and the corresponding communication quality result who produces, make call setup request priority or that make level on probation once again, this packet transfer device, packet is between a plurality of terminal installations, thereby transmit packet with priority level separately, this call control apparatus is managed the call state that each terminal installation sends.Above-mentioned call control apparatus is store contract information in advance, this contract information comprises the priority level translative mode that can use for by the terminal installation of call control apparatus control at least, and when having set up calling, call out the packet transfer device, packet notice monitoring information that carries out terminal installation to regulating, whether this monitoring information comprises the information of discerning with the packet of calling out related exchange, be used for determining combine the packet of calling out exchange meets the information of contract information, and comprises the identifier of representing the priority level translative mode at least.Above-mentioned packet transfer device, packet receives above-mentioned monitoring information, and based on above-mentioned identifier, estimation determines also from the priority level conversion of the packet of the terminal installation that relates to calling whether the COS relevant with the priority level of each packet meets contract information.
The present invention carries out the leading reason of awarding based on measuring of terminal and controls, wherein make the call setup request of transmitting the level on probation of priority level as packet, and corresponding as a result with relevant communication quality, make priority or make level call setup request on probation once more.Call control apparatus is because carrying out when packet sends the monitoring indication, the identifier of the translative mode of notice expression priority level, so, packet transfer device, packet is afterwards based on this identifier, can be on one side to estimating, Yi Bian monitor with the priority level conversion of the packet of calling out relevant terminal installation transmission.
In preferred forms of the present invention, above-mentioned packet transfer device, packet is given above-mentioned call control apparatus with this context notification when definite above-mentioned COS does not meet said contract information, and above-mentioned call control apparatus then cuts off the communication relevant with this calling.
In preferred forms of the present invention, above-mentioned packet transfer device, packet is then abandoned this packet when definite above-mentioned COS does not meet said contract information.
In the present embodiment, the packet of breach of contract is abandoned.Therefore, present embodiment is only transmitted the packet that meets contract information.
In preferred forms of the present invention, above-mentioned packet transfer device, packet is transmitted packet with the priority level relevant with the COS that meets said contract information when definite above-mentioned packet COS does not meet said contract information.
In the present embodiment, the packet of breach of contract is changed to the packet that meets contract information.Therefore, all packets become the packet that meets contract information.
In preferred forms of the present invention, above-mentioned call control apparatus is when above-mentioned terminal installation sends call setup request, determine whether met said contract information,, then refuse this call setup request if do not meet by the COS of call setup request.
In the present embodiment, if call setup request does not meet contract information, then refuse this call setting.Therefore, before sending packet, the calling of refusal breach of contract.
In addition, in order to achieve the above object, another packet repeater system of the present invention comprises a plurality of terminal installations, a plurality of packet transfer device, packets and a call control apparatus, this terminal installation is made to transmit the call setup request of packet corresponding to the COS of one of a plurality of priority levels, this packet transfer device, packet is between a plurality of terminal installations, thereby transmit packet from terminal installation with separately priority level, this call control apparatus management is from the call state of each terminal installation.Above-mentioned call control apparatus is when having set up calling, to regulate calling out the packet transfer device, packet notice monitoring information that carries out terminal installation, this monitoring information comprises the information of discerning with the packet of calling out related exchange, be used to determine to relate to and call out and whether the packet of exchange meets the information of contract information.Above-mentioned packet transfer device, packet has the preset threshold value of the minimum data flow velocity that is used for packet, based on receiving above-mentioned monitoring information, monitoring is from the data rate of the packet that sends out about the terminal installation of calling out, and under the situation of data rate less than above-mentioned threshold value, give above-mentioned call control apparatus with this context notification, if above-mentioned call control apparatus receives the content of data rate less than above-mentioned threshold value, then cut off the communication relevant with calling.
In the present invention, set up and called out and the beginning data packet communication, and under the situation of data rate than threshold value of packet, then cut off the relevant communication of this calling.
In preferred forms of the present invention, above-mentioned packet transfer device, packet has the default upper limit threshold that is used for packet maximum data flow velocity, under the situation of data rate greater than above-mentioned upper limit threshold, give above-mentioned call control apparatus with this context notification, if above-mentioned call control apparatus receives the content of data rate greater than above-mentioned threshold value, then cut off the communication relevant with calling.
Present embodiment is cut off the communication relevant with calling under the situation of data rate greater than upper limit threshold of the packet that is used to call out.This implements the situation of the data rate of same Monitoring Data bag less than lower threshold.
In preferred forms of the present invention, above-mentioned packet transfer device, packet is based on the data rate of the big or small Monitoring Data bag of token bucket (bucket), and setting is used for the threshold value of the minimum data flow velocity of above-mentioned packet greater than the value conduct of the initial value of token counter.
In the present embodiment, based on the token counter of token bucket, the increase and decrease of whole monitoring packet data flow velocity.
In addition, in order to achieve the above object, packet monitoring method provided by the invention is used for the packet repeater system, the call setup request of transmitting the level on probation of priority level as packet is made by this system, and according to relevant communication quality result, make priority or make the call setup request of trying out level once more, thereby transmit packet.This method comprises: the default contract information that comprises the priority level translative mode that can use each user at least; After having set up calling, the priority level of the packet that estimation will be transmitted based on monitoring information, this monitoring information has comprised and has been used to discern with the information of calling out the relevant packet that exchanges and is used for determining and calls out the relevant packet that exchanges and whether meet said contract information, and comprises the information of the identifier of expression priority level translative mode at least; And determine whether the COS relevant with the priority level of specific data bag meets said contract information.
The present invention carries out the leading reason of awarding based on measuring of terminal and controls, the call setup request of transmitting the level on probation of priority level as packet is made in this control, and, make priority or make the call setup request of trying out level once more according to relevant communication quality result.When monitoring indication to sending of packet transfer device, packet, the identifier of notice expression priority level translative mode, so, packet transfer device, packet is afterwards based on this identifier, can estimate conversion on one side, Yi Bian monitor based on the priority of data packets grade of the terminal installation transmission of calling out mutual communication.
In addition, in order to achieve the above object, the invention provides another packet monitoring method that is used for the packet repeater system, this system to be making the call setup request that is used to transmit packet corresponding to the COS of one of a plurality of priority levels, and transmits the packet of each priority level.This method comprises, after foundation is called out, monitors and call out the data rate of relevant packet, and event data stream speed is lower than the predetermined threshold value that is used for the packet minimum flow velocity, the communication that cut-out is relevant with calling.
In the present invention, call out and the beginning data packet communication though set up,, under the data rate of the packet situation lower, then cut off with this and call out relevant communication than threshold value.
In addition, in order to achieve the above object, call control apparatus of the present invention receives the call setup request as the level on probation of packet forwarding priority level, and corresponding with the communication quality result, receives priority or receives on probation grade call setup request once more.This call control apparatus possesses: the contract information storage part of the contract information that prestores, this contract information comprise the translative mode of the priority level that can use the adjusting terminal installation at least; The contract information determination portion, its in call setup request, the COS of determining the calling relevant with call setup request whether with the said contract information conforms; Monitoring information notice portion, it will comprise the information that is used to discern with the information of calling out the relevant packet that exchanges, is used for determining whether to meet about the packet that exchanges with calling said contract information, and the monitoring information that comprises the information of the identifier of representing above-mentioned priority level translative mode at least, when having set up calling, be notified to the packet transfer device, packet of regulating terminal installation; With call state management department, it cuts off the communication relevant with calling when the COS that has received the specific data bag from packet transfer device, packet does not meet contract information.
In addition, in order to achieve the above object, packet transfer device, packet of the present invention is a kind of packet transfer device, packet that packet is transmitted with the priority level corresponding with its COS, it possesses: rank conversion monitoring portion, if it receives monitoring information, this monitoring information comprises the information of discerning in conjunction with the packet of calling out exchange, be used for determining whether to meet the information of contract information with the packet of calling out related exchange, and the identifier that comprises expression priority level translative mode at least, then based on above-mentioned identifier, on one side to from estimating with the conversion of the priority level of the packet of calling out relevant terminal installation, determine with the priority level of each packet relevant COS whether suitable said contract information on one side; Packet is abandoned portion, and it then abandons this packet when being defined as COS and not meeting said contract information; Packet rewriting portion, it is rewritten as above-mentioned COS the COS that meets said contract information when being defined as above-mentioned type of data packet and not meeting said contract information.
In addition, in order to achieve the above object, another kind of packet transfer device, packet provided by the invention is a kind of packet transfer device, packet that packet is transmitted with the priority level corresponding with its COS, it possesses packet data flow monitoring portion, this packet data flow monitoring portion has the preset threshold value relevant with the minimum data flow velocity of above-mentioned packet, it is based on the monitoring information that receives, whether monitoring is lower than above-mentioned threshold value from the data rate of the packet that the above-mentioned terminal installation relevant with calling sends out, and this monitoring information comprises the information of discerning in conjunction with the packet of calling out exchange, be used for determining whether to meet the information of contract information with the packet of calling out related exchange.
In addition, in order to achieve the above object, packet repeater system of the present invention comprises a plurality of packet transfer device, packets that are present between a plurality of terminal installations, thereby transmits packet with priority level separately, and this system possesses: the monitoring device that carries out above-mentioned packet monitoring; Call control apparatus, in its call state between the above-mentioned terminal installation of management, when the request of setting is exhaled in reception, determine whether will be relevant with this calling packet as monitoring target, and be made as under the situation of monitoring target being defined as, control this packet and make it pass through above-mentioned monitoring device.
In the present invention, the packet that calling exchanged for monitoring is forwarded by monitoring device.Therefore, monitoring function can be by unified in monitoring device.
In preferred forms of the present invention, above-mentioned call control apparatus is under the situation of determining the packet that monitoring is relevant with calling, the address of above-mentioned monitoring device is notified to the terminal installation of the exchange of carrying out the packet relevant with above-mentioned calling as destination address, and the monitoring that will comprise the address of the terminal installation that carries out the packet exchange relevant with above-mentioned calling begins indication and sends to above-mentioned monitoring device, above-mentioned monitoring device received above-mentioned monitoring begin the indication after, the packet that to be included in above-mentioned monitoring first terminal installation address in beginning to indicate be transmission source address is monitored, for this packet, the destination address of packet is rewritten as the address that is included in second terminal installation of above-mentioned monitoring in beginning to indicate, and sends this packet.
In the present embodiment, the monitoring device address is notified to the terminal installation that communicates with calling in monitoring as destination address, and the packet that terminal installation is sent is transmitted to monitoring device, and the rewriting destination address is forwarded in the real target terminal apparatus then with the transmission address in monitoring device.Therefore, as the terminal installation of monitoring objective for call out and the packet of exchange is received and dispatched via monitoring device.
In order to achieve the above object, another kind of packet repeater system of the present invention is a kind of being present between a plurality of terminal installations, the call source terminal installation is sent packet with separately priority level and is forwarded to system in the target terminal apparatus, and it possesses: the monitoring device that carries out above-mentioned packet monitoring; Call control apparatus in its call state between the above-mentioned terminal installation of management, under the situation of packet as monitoring target that will transmit, is controlled this data monitored bag and is made it arrive above-mentioned monitoring device.
The present invention controls the data monitored bag makes it arrive monitoring device.Therefore, monitoring function can be by unified at monitoring device.
In preferred forms of the present invention, above-mentioned call control apparatus with the packet of above-mentioned forwarding as when monitoring and transmitting object, the address notification of terminal installation that will be relevant with the communication of above-mentioned monitoring target packet is given each packet transfer device, packet of regulating the terminal installation of being correlated with communicating by letter of above-mentioned data monitored bag, and the monitoring that will comprise the address of the terminal installation relevant with the communication of above-mentioned data monitored bag begin the indication send in the above-mentioned monitoring device, above-mentioned packet transfer device, packet is after the address that has received the terminal installation relevant with the communication of above-mentioned data monitored bag, with the transmission source address of packet in address notified the destination address of packet be rewritten as the address of above-mentioned monitoring device, and transmit this packet.This monitoring device received above-mentioned monitoring begin the indication after, to transmission source address is that packet in being contained in the monitoring terminal installation address that begins to indicate is monitored, and for this packet, destination address is rewritten as the address that is included in the target terminal apparatus of above-mentioned monitoring in beginning to indicate, and sends this packet.
In the present embodiment, in the marginal date packet forwarding apparatus, the address that the destination address of data monitored bag is rewritten as monitoring device is forwarded in the monitoring device then, in monitoring device, the destination address of packet is rewritten as the address of real target terminal apparatus and is forwarded in the real target terminal apparatus.Therefore, the data monitored bag is exchanged via monitoring device.
In preferred forms of the present invention, above-mentioned packet transfer device, packet is according to MPLS (multiprotocol label conversion: Multi Protocol Label Switching) transmit packet, and will be used between all terminal installations LSP (tag transform path: Label Switch Path) be preset in above-mentioned packet transfer device, packet by above-mentioned monitoring device, above-mentioned call control apparatus is under with the situation of above-mentioned forwarding packet as monitoring target, the address notification of terminal installation that will be relevant with the communication of above-mentioned data monitored bag is given each packet transfer device, packet of regulating the terminal installation of being correlated with communicating by letter of above-mentioned data monitored bag, above-mentioned packet transfer device, packet is after the address that has received the terminal installation relevant with the communication of above-mentioned data monitored bag, to be used for LSP label, be set to the label of the MPLS of the packet that sends to target terminal apparatus from terminal installation with notified address by above-mentioned monitoring device.
In the present embodiment, the marginal date packet forwarding apparatus label of selecting to be used for the LSP by monitoring device is as the label of data monitored bag and transmit.Therefore, the data monitored bag is exchanged via monitoring device.
In preferred forms of the present invention, connect above-mentioned monitoring device, make it from the path between predetermined two data packet forwarding apparatus, obtain packet, above-mentioned packet transfer device, packet is transmitted packet by MPLS, and between the whole terminal device, at the LSP that preestablishes on the above-mentioned packet transfer device, packet via the path between above-mentioned two data packet forwarding apparatus.Above-mentioned call control apparatus is under the situation of monitoring target at the packet with above-mentioned forwarding, the address of terminal installation that will be relevant with the communication of the packet of above-mentioned monitoring target, be notified to each packet transfer device, packet of regulating the terminal installation relevant with the communication of above-mentioned data monitored bag, above-mentioned packet transfer device, packet is after the address that has received the terminal installation relevant with the communication of above-mentioned data monitored bag, be provided for LSP label, for send to the MPLS label of each data monitored bag of target terminal apparatus from terminal installation with notified address by the path between two data packet forwarding apparatus.
In the present embodiment, in the marginal date packet forwarding apparatus, select to be used for via the LSP label in the path between two specific data packet forwarding apparatus label as the data monitored bag.In this path, connect monitoring device and make it obtain packet from the path.Therefore, the data monitored bag can arrive monitoring device.
In preferred forms of the present invention, each packet transfer device, packet has the output port corresponding with above-mentioned monitoring device, above-mentioned call control apparatus is under with the situation of above-mentioned forwarding data as monitoring target, the address of terminal installation that will be relevant with the communication of above-mentioned data monitored bag, be notified to each packet transfer device, packet of regulating the terminal installation relevant with the communication of above-mentioned data monitored bag, above-mentioned packet transfer device, packet is after the address that has received the terminal installation relevant with the communication of above-mentioned data monitored bag, the packet of address corresponding port that will be by the terminal installation relevant with the communication of above-mentioned data monitored bag copies in the output port corresponding with above-mentioned monitoring device.
In the present embodiment, in the marginal date packet forwarding apparatus, the packet of address corresponding port that will be by the terminal installation relevant with the communication of above-mentioned data monitored bag has copied in the output port corresponding with above-mentioned monitoring device.Therefore, the data monitored bag arrives monitoring device.
In preferred forms of the present invention, also possesses the input equipment that to discern above-mentioned data monitored bag.
In the present embodiment, can specify from the outside should the data monitored bag.
In preferred forms of the present invention, be input in the above-mentioned input equipment by indication, thereby discern above-mentioned data monitored bag designated call.
In the present embodiment, can call out the appointment that connects calling should be as the packet of monitoring target.
In preferred forms of the present invention, be input in the above-mentioned input equipment by terminal installation indication appointment, discern above-mentioned data monitored bag.
In the present embodiment, the appointment that can terminal installation connects terminal installation should be as the packet of monitoring target.
In preferred forms of the present invention, be input in the above-mentioned input equipment by the indication that will specify the specific user, thus identification data monitored bag.
In the present embodiment, the appointment that can the user meets the user should be as the packet of monitoring target.
In preferred forms of the present invention, above-mentioned call control apparatus possesses the communication history management department to the result of each terminal installation and user record monitoring, when terminal installation or user send new communication request, discern above-mentioned data monitored bag based on this monitoring result.
In the present embodiment, for example can begin to select monitoring target from carrying out the high terminal installation of abnormal operation possibility with reference to the history of past monitoring result.In preferred forms of the present invention, above-mentioned call control apparatus is discerned above-mentioned data monitored bag based on the communication attributes that is documented in the call control signals when carrying out new communication request.
In the present embodiment, uncorrelated with the possibility of abnormal operation, for example also can begin according to the selective sequential monitoring target from the calling of the bigger communication bandwidth of request.
In preferred forms of the present invention, above-mentioned call control apparatus is discerned above-mentioned data monitored bag based on the routing iinformation that is documented in the call control signals when carrying out new communication request.
Present embodiment can reduce the monitoring possibility of communication, and this communication is to be undertaken by route via the reliable home gateway with monitoring function.
In preferred forms of the present invention, above-mentioned monitoring device possesses test data bag monitoring portion, and it is only monitored the test data bag of level on probation.
Be applied to the communication system of terminal leading type in present embodiment, this system utilizes the test data bag to estimate the communication possibility.The for example test data bag monitoring portion of test data bag is only monitored in the present embodiment setting, can carry out the monitoring operation of monitoring device effectively.
In preferred forms of the present invention, above-mentioned monitoring device is when the packet that will receive is forwarded to target terminal apparatus, have a mind to the packet abandoning receiving, under the situation of the report of from above-mentioned target terminal apparatus, having accepted correctly to receive this packet of abandoning, determine that then this target terminal apparatus is the terminal installation that has carried out malicious operation.
In the present embodiment, can detect the terminal installation of error reporting under normal situation about receiving for receiving unusually.
In order to achieve the above object, packet monitoring method of the present invention is a kind of method in the packet repeater system, and this packet repeater system possesses a plurality of packet transfer device, packets that are present between a plurality of terminal installations and packet transmitted with priority level separately, the call control apparatus of the call state between the above-mentioned terminal installation of control and the monitoring device that carries out above-mentioned packet monitoring.Above-mentioned call control apparatus is when receipt of call is provided with request, determine whether the packet relevant with this calling is necessary for monitoring target, determine that at above-mentioned call control apparatus the packet relevant with this calling is under the situation of monitoring target, the address of above-mentioned monitoring device as destination address, is notified to the terminal installation of the exchange of carrying out the packet relevant with above-mentioned calling.Above-mentioned call control apparatus will comprise to begin to indicate with the monitoring of the address of the terminal installation of calling out relevant packet exchange and send to above-mentioned monitoring device.Above-mentioned monitoring device is after the above-mentioned monitoring of reception begins indication, to first of the address that is included in the terminal installation of above-mentioned monitoring in beginning to indicate is that the packet of transmission source address is monitored, above-mentioned monitoring device is rewritten as the address that is included in second terminal installation of above-mentioned monitoring in beginning to indicate with the destination apparatus address of packet, and sends this packet.
In the present invention, the address of monitoring device is given the terminal installation of mutual communication based on the call notification of monitoring as destination address.The packet that sends out from terminal installation is forwarded to the monitoring device, rewrites destination address and transmission source address and send in the real target terminal apparatus in monitoring device.Therefore, the packet of the terminal installation that becomes monitoring target exchange under calling out is forwarded via monitoring device.
In addition, in order to achieve the above object, another kind of packet monitoring method of the present invention is a kind of method in the packet repeater system, and this packet repeater system possesses a plurality of packet transfer device, packets that are present between a plurality of terminal installations and packet transmitted with priority level separately, the call control apparatus of the call state between the above-mentioned terminal installation of management, the monitoring device that carries out above-mentioned packet monitoring.Above-mentioned call control apparatus is under the situation of monitoring target at the packet with above-mentioned forwarding, will with the address of the terminal installation of the exchange correlation of above-mentioned data monitored bag, be notified to each packet transfer device, packet of regulating with the terminal installation of the exchange correlation of above-mentioned data monitored bag.The monitoring of address that above-mentioned call control apparatus will comprise the terminal installation of the exchange packet relevant with above-mentioned calling begins to indicate and is transmitted to above-mentioned monitoring device.Above-mentioned packet transfer device, packet is that the destination address of the packet in address notified is rewritten as the address of above-mentioned monitoring device with transmission source address, and sends this packet after the address that has received the relevant terminal installation of above-mentioned data monitored packet communication.Above-mentioned monitoring device is receiving after above-mentioned monitoring begins indication, is to monitor at the packet of the address that is contained in the terminal installation of above-mentioned monitoring in beginning to indicate to transmission source address.Above-mentioned monitoring device is rewritten as the address that is included in the terminal installation of above-mentioned monitoring in beginning to indicate with the destination address of packet, and is main contents to send this packet.
In the present embodiment, in the marginal date packet forwarding apparatus, the address that the destination address of data monitored bag is rewritten as monitoring device is forwarded in the monitoring device then, and in monitoring device, the destination address of packet is rewritten and is forwarded in the real target terminal apparatus.Therefore, the data monitored bag is forwarded via monitoring device.
In addition, in order to achieve the above object, another kind of packet monitoring method of the present invention is a kind of method in the packet repeater system, this packet repeater system possesses and is present between a plurality of terminal installations, transmit according to MPLS, and have and make terminal installation pass through a plurality of packet transfer device, packets of the default LSP of above-mentioned monitoring device; Manage the call control apparatus of the call state between the above-mentioned terminal installation; Carry out the monitoring device of above-mentioned packet monitoring.In this packet monitoring method, above-mentioned call control apparatus is under the situation of monitoring target at the packet with above-mentioned forwarding, will with the address of the terminal installation of the exchange correlation of above-mentioned data monitored bag, be notified to each packet transfer device, packet of regulating with the terminal installation of the exchange correlation of above-mentioned data monitored bag, above-mentioned packet transfer device, packet is used for the label that LSP label by above-mentioned monitoring device is set to the MPLS of each data monitored bag of sending to target terminal apparatus from terminal installation with notified address after the address that receives the terminal installation relevant with above-mentioned data monitored packet switch.
In the present invention, in the marginal date packet forwarding apparatus, select to be used for transmitting as the label of data monitored bag via the LSP label of monitoring device.Therefore, the data monitored bag is exchanged via monitoring device.
In addition, in order to achieve the above object, another kind of packet monitoring method of the present invention is a kind of method in the packet repeater system, this packet repeater system possesses and is present between a plurality of terminal installations, transmit according to MPLS, and have a plurality of packet transfer device, packets that are used for by the default LSP of the above-mentioned monitoring device between the terminal installation; Manage the call control apparatus of the call state between the above-mentioned terminal installation; The monitoring device that can obtain packet from the path between two default data packet forwarding apparatus and carry out above-mentioned packet monitoring.In this packet monitoring method, above-mentioned call control apparatus is under the situation of monitoring target at the packet with above-mentioned forwarding, will give the packet transfer device, packet of regulating terminal installation with the address notification of the terminal installation of the exchange correlation of above-mentioned data monitored bag.Packet transfer device, packet is after the notice of the address that receives the relevant terminal installation of above-mentioned data monitored packet switch, to be used for LSP label, be set to the label of the MPLS of each data monitored bag of sending to target terminal apparatus from terminal installation with notified address by the path between two data packet forwarding apparatus.
In the present invention, in the marginal date packet forwarding apparatus, select to be used for via the LSP label in the path between two data packet forwarding apparatus label as the data monitored bag.This path is connected to monitoring device, thereby monitoring device can obtain packet from the path.Therefore, the data monitored bag arrives monitoring device.
In addition, in order to achieve the above object, another kind of packet monitoring method of the present invention is a kind of method in the packet repeater system, and this packet repeater system possesses the monitoring device that carries out the packet monitoring; Be present between a plurality of terminal installations, and have the output port corresponding with above-mentioned monitoring device, and a plurality of packet transfer device, packets that packet is transmitted with priority level separately; Manage the call control apparatus of the call state between the above-mentioned terminal installation.Above-mentioned call control apparatus is under the situation of monitoring target at the packet with above-mentioned forwarding, will with the address of the terminal installation of the exchange correlation of above-mentioned data monitored bag, be notified to each packet transfer device, packet of regulating with the terminal installation of the exchange correlation of above-mentioned data monitored bag.Above-mentioned packet transfer device, packet is after the address of the notified terminal installation relevant with above-mentioned data monitored packet switch, will be by the packet of the terminal installation address corresponding port relevant with above-mentioned data monitored packet switch, copy to the corresponding output port of above-mentioned monitoring device in, and as main contents.
In the present invention, in the marginal date packet forwarding apparatus, will copy in the output port corresponding by the packet of the terminal installation address corresponding port relevant with above-mentioned data monitored packet switch with above-mentioned monitoring device.Therefore, the data monitored bag arrives monitoring device.
In addition, in order to achieve the above object, call control apparatus of the present invention possesses: the call state management department of the call state between the device of office terminal; The monitoring target determination portion, it determines when reception is provided with call request whether the packet relevant with this calling is necessary for monitoring target, and determines whether that with this calling be monitoring target; Address notification portion, it is made as the packet relevant with above-mentioned calling under the situation of monitoring target being defined as, and the address of monitoring device is notified to the terminal installation that carries out the packet exchange relevant with above-mentioned calling as destination address; Monitoring Department of Communication Force, its demonstration that will comprise the terminal installation address of carrying out the packet exchange relevant with this calling begin indication and are transferred in the monitoring device.
In addition, in order to achieve the above object, another kind of call control apparatus of the present invention possesses: the call state management department of the call state between the device of office terminal; Address notification portion, its packet of transmitting between with terminal installation is made as under the situation of monitoring target, and the address notification of terminal installation that will be relevant with above-mentioned data monitored packet switch is given each packet transfer device, packet of regulating the terminal installation relevant with above-mentioned data monitored packet switch; Monitoring Department of Communication Force, its demonstration that will comprise the terminal installation address of carrying out the data monitored packet switch begin indication and are transferred in the monitoring device.
In addition, in order to achieve the above object, packet transfer device, packet of the present invention possesses: the packet that the call source terminal installation is sent is forwarded to packet forwarding portion in the target terminal apparatus with priority level; Packet rewriting portion, it is the address that the destination address of the packet in address notified is rewritten as monitoring device with transmission source address after the address of the notified terminal installation relevant with the data monitored packet switch.
In addition, in order to achieve the above object, another kind of packet transfer device, packet of the present invention possesses: the packet that the call source terminal installation is sent is forwarded to packet forwarding portion in the target terminal apparatus with priority level; Label rewriting portion, it is after the address of the notified terminal installation relevant with the data monitored packet switch, to be used for LSP label, be set to the label of the MPLS of the packet that sends to target terminal apparatus from terminal installation with notified address by above-mentioned monitoring device.
In addition, in order to achieve the above object, another kind of packet transfer device, packet of the present invention possesses: packet monitoring portion, and it is receiving after monitoring begins indication, and the packet that transmission source address is included in the address of the terminal installation of above-mentioned monitoring in beginning to indicate is monitored; Packet rewriting portion, it is for monitored packet, and the destination address of data monitored bag is rewritten as, and is included in beginning to indicate and the address that relate to the target terminal apparatus of above-mentioned data monitored packet communication of above-mentioned monitoring.
Description of drawings
Fig. 1 is the diagrammatic sketch of configured in one piece of an execution mode of expression retry communication control system of the present invention;
Fig. 2 is the diagrammatic sketch that is used to illustrate the priority conversion that packet is provided with according to first execution mode of retry communication control method of the present invention;
Fig. 3 is the diagrammatic sketch that is used to illustrate the priority conversion that packet is provided with according to first execution mode of retry communication control method of the present invention;
Fig. 4 is the flow chart according to first execution mode explanation flow process of retry communication control method of the present invention;
Fig. 5 is the diagrammatic sketch of the priority of packet setting being changed according to second execution mode explanation of retry communication control method of the present invention;
Fig. 6 is the flow chart according to second execution mode explanation flow process of retry communication control method of the present invention;
Fig. 7 is the diagrammatic sketch of the priority of packet setting being changed according to the 3rd execution mode explanation of retry communication control method of the present invention;
Fig. 8 is the flow chart according to the 3rd execution mode explanation flow process of retry communication control method of the present invention;
Fig. 9 is the diagrammatic sketch of the priority of packet setting being changed according to the 4th execution mode explanation of retry communication control method of the present invention;
Figure 10 is the flow chart according to the 4th execution mode explanation flow process of retry communication control method of the present invention;
Figure 11 is the diagrammatic sketch according to the configuration of an execution mode of packet transfer device, packet of the present invention;
Figure 12 is the diagrammatic sketch configuration according to the configuration of an execution mode of packet transfer device, packet of the present invention;
Figure 13 is the diagrammatic sketch of the processing in the summary description packet transfer device, packet;
Figure 14 A and 14B are the flow chart of summary table registration according to the flow process in the packet forwarding apparatus;
Figure 15 is the diagrammatic sketch with time shaft and bandwidth utilization rate, and the example of the processing of carrying out in its expression packet transfer device, packet for example, utilizes ToS control priority to transmit the communication quality control and treatment of handling;
Figure 16 is the flow chart that expression determines whether to transmit according to the quantity in the token bucket flow process of packet;
Figure 17 A and 17B are the diagrammatic sketch of object lesson of change of the token counts value of expression token bucket;
Figure 18 is that expression packet forwarding possibility is determined the diagrammatic sketch of method according to applied first representative instance of the present invention;
Figure 19 is that expression packet forwarding possibility is determined the diagrammatic sketch of method according to applied second representative instance of the present invention;
Figure 20 is a diagrammatic sketch of representing the configuration of packet repeater system according to one embodiment of the present invention;
Figure 21 is the diagrammatic sketch of the packet priority level in the expression packet repeater system;
Figure 22 is the flow chart that the expression receipt of call is provided with the flow process of carrying out in the call control apparatus in request time;
Figure 23 is the flow chart that the flow process of carrying out in call control apparatus when calling out has been set up in expression;
Figure 24 represents and the diagrammatic sketch that arrives the variation in the packet corresponding token counter according to embodiments of the invention;
Figure 25 is the diagrammatic sketch according to the configured in one piece of first execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device;
Figure 26 is the flow chart of packet repeater system flow process of execution when receipt of call is provided with request of expression first execution mode;
Figure 27 is the flow chart of packet repeater system flow process of execution when setting up calling of expression first execution mode;
Figure 28 is the flow chart of the monitoring flow process carried out in the packet repeater system of expression first execution mode;
Figure 29 be illustrated in the packet repeater system monitoring to as if call out and receive the flow chart of the flow process of carrying out under the situation of call setup request;
Figure 30 is the diagrammatic sketch according to the configured in one piece of second execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device;
Figure 31 is the flow chart of the monitoring flow process carried out of the packet repeater system of expression second execution mode;
Figure 32 is the allocation plan according to the modification video data packet forwarding apparatus of second execution mode;
Figure 33 is the diagrammatic sketch according to the configured in one piece of the 3rd execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device;
Figure 34 is the flow chart of the monitoring flow process carried out of the packet repeater system of expression the 3rd execution mode;
Figure 35 is the integrally-built diagrammatic sketch according to the modification of the 3rd execution mode of video data packet forwarding system of the present invention;
Figure 36 is the flow chart of the monitoring flow process carried out in the modification video data packet forwarding system according to the 3rd execution mode;
Figure 37 is the diagrammatic sketch of configuration of the modification of expression monitoring device;
Figure 38 is the diagrammatic sketch that the Monitoring Data bag that is separated from each other of expression is rewritten the monitoring device that unit and packet monitoring means constitute;
Figure 39 is that expression Monitoring Data bag is rewritten the flow chart of the flow process of carrying out the unit;
Figure 40 is the flow chart of the flow process of expression packet monitoring means execution;
Figure 41 A and 41B are the diagrammatic sketch of the monitoring flow process that is used for illustrating that monitoring device is carried out.
Embodiment
Below, with reference to the accompanying drawings embodiments of the present invention are elaborated.
Fig. 1 is the diagrammatic sketch of configured in one piece of first execution mode of expression retry communication control system of the present invention.
In Fig. 1, packet transfer device, packet 10a～10c is connected terminal installation 40a～40e with IP (Internet Protocol Internet Protocol) network 1000, and the IP packet that terminal installation 40a～40e is sent is forwarded in the IP network 1000.For example, packet transfer device, packet 10a is connected terminal installation 40a with IP network 1000, and corresponding priority is come the packet of forwarding priority and tentative level, and specify the priority of this forwarding packet by terminal installation 40a, for example, transmit with priority or transmit with level on probation.
First execution mode of＜retry communication control method and this system 〉
At first, first execution mode to retry communication control method of the present invention and this system describes.Fig. 2 and Fig. 3 are the diagrammatic sketch of the priority of packet setting being changed according to first execution mode explanation of retry communication control method of the present invention.
In the following description, to priority level for example priority and tentative level illustrate, still, for the grade that is provided with more than three, the system of for example rudimentary, tentative level, priority and four grades of limit priority, the present invention is effective too.
For example, terminal installation 40a sends out on probation grade packet in the section T1 at first at the fixed time, if quality is enough, terminal installation 40a will be for example Tos (COS: Type of Service) value is made as priority, and the packet of forwarding priority, IP network 1000 sends to the destination with this packet as the priority data bag.If it is not enough to try out the packet quality of level, then stop forwarding, and after through predetermined amount of time T2, terminal installation 40a sends the packet of level on probation once more.For determining whether to send packet of this level on probation, terminal installation 40a depends on the traffic data of priority data bag that the body of the difference in functionality of terminal installation is for example measured and that obtain via IP network.
In Fig. 2, terminal installation 40a transmits packet, packet transfer device, packet 10a transmits packet at the fixed time with the packet of level on probation in the section T1, and because the communication quality of this packet is enough, so by with its priority change being priority and transmitting with the priority data bag.
In Fig. 3, though the packet that packet transfer device, packet 10a will send from terminal installation 40a transmit in the section T1 at the fixed time with the packet of level on probation,, because the communication quality of this packet is not enough, so terminal installation 40a ends packet and sends.After passing through predetermined amount of time T2, terminal installation 40a for example obtains priority traffic rate CA from IP network 1000, exists under the vacant situation at the traffic rate CA that judges priority, sends the packet of level on probation once more.
In addition, this packet is to be that for example ToS value of the transmission packet by terminal installation 40a is set serves as preferential or tries out and carry out transmitting with priority or transmitting with level on probation.
Fig. 4 is the flow chart according to first execution mode explanation flow process of retry communication control method of the present invention.Below, based on Fig. 4 the handling process of first execution mode of retry communication control method of the present invention is described.
At first, terminal installation 40a sends out on probation grade packet (flow process S1) in the section T1 at the fixed time.The packet that packet transfer device, packet 10a sends out a terminal installation 40a level packet on probation is forwarded to (step S2) in the IP network 1000.Terminal installation 40a estimates that in step S2 whether enough the communication quality of this packet that packet transfer device, packet 10a transmits (step S3).In step S3, if enough, then enter step S4, if not enough, then enter step S5.
In step S4, terminal installation 40a sends packet as the priority data bag, and packet transfer device, packet 10a transmits the packet of priority with priority.
On the other hand, in step S5, the terminal installation 40a interior some or all of packet that stops of section (for example T2) at the fixed time sends.After through predetermined amount of time T2, terminal installation 40a estimates whether to send level packet (step S6) on probation based on the data packet communication amount speed CA of the priority that monitors.
In step S6, if be judged as passablely, then turn back to step S1, terminal installation 40a sends the packet of level on probation at the fixed time in the section T1 once more, and is transmitted by packet transfer device, packet 10a.
On the other hand, if be judged as cannot, then turn back to step S5, and section stops the transmission of packet in (for example T2) at the fixed time.And, the monitoring among the repeating step S6.
In addition, in the time of beginning forwarding priority packet from step S4, call control apparatus (not shown) begins charge (step S7) to terminal installation 40a.
By above method, can prevent that the maximum processing capability of IP network 1000 integral body in the data packet transmission of level on probation from reducing.
In addition, also can function in an acting capacity of the function of the terminal installation 40a that puts down in writing among step S1, S3, S5 and the S6 by packet transfer device, packet 10a.
Second execution mode of＜retry communication control method and this system 〉
Next, second execution mode to retry communication control method of the present invention and this system describes.Fig. 5 is the diagrammatic sketch of the priority of packet setting being changed according to second execution mode explanation of retry communication control method of the present invention.
In the present embodiment, do not obtain under the situation of enough communication qualities at a predetermined amount of time T1 that has passed through the judgement communication quality and a transmission level on probation packet, after having passed through predetermined amount of time T2 again, and send once more in the communication mode of level packet on probation, based on level communication quality CQ on probation before, decision could send follow-up level packet on probation.In addition, though terminal installation 40a has carried out the evaluation of this level communication quality CQ on probation before, but also can function in an acting capacity of by packet transfer device, packet 10a.
Fig. 6 is the flow chart according to second execution mode explanation flow process of retry communication control method of the present invention.Below, based on Fig. 6 the handling process of second execution mode of retry communication control method of the present invention is described.
At first, terminal installation 40a sends out on probation grade packet (step S11) in the section T1 at the fixed time.The packet that packet transfer device, packet 10a sends out a terminal installation 40a level packet on probation is forwarded to (step S12) in the IP network 1000.Enough whether the communication quality of terminal installation 40a estimation this packet that packet transfer device, packet 10a transmits in step S12 (step S13).In step S13, if enough, then enter flow process S14, if not enough, then enter step S15.
In step S14, terminal installation 40a sends the priority data bag, and packet transfer device, packet 10a transmits this packet as the packet of priority.
On the other hand, in step S15, terminal installation 40a stops the packet transmission in the section (for example T2) at the fixed time.Through after the predetermined amount of time T2, terminal installation 40a estimates the packet (step S16) that whether can send level on probation based on before level data packet communication quality CQ on probation.
In step S16, if be judged as passablely, then turn back to step S11, wherein terminal installation 40a sends the packet of level on probation at the fixed time in the section T1 once more, and is transmitted by packet transfer device, packet 10a.
On the other hand, if be judged as cannot, then turn back to step S15, and at the fixed time section in (for example T2) the some or all of packet that stops to send.And, the monitoring among the repeating step S16.
In addition, when beginning the forwarding priority packet from step S14, call control apparatus (not shown) begins charge (step S17) to terminal installation 40a.
In addition, also can function in an acting capacity of the function of the terminal installation 40a that puts down in writing among step S11, S13, S15 and the S16 by packet transfer device, packet 10a.
The 3rd execution mode of＜retry communication control method and this system 〉
Next, the 3rd execution mode to retry communication control method of the present invention and this system describes.Fig. 7 is the diagrammatic sketch of the priority of packet setting being changed according to the 3rd execution mode explanation of retry communication control method of the present invention.
In the present embodiment, do not obtain under the situation of enough communication qualities at predetermined amount of time T1 that has passed through the judgement communication quality and level packet on probation transmission, after having passed through predetermined amount of time T2 again, level data packet communication quality CQ on probation before corresponding, estimate to send the execution probability of follow-up level packet on probation, and determine whether to send packet based on this probability.In this case, the possibility with level packet on probation of enough communication qualities is height, so afterwards, terminal installation 40a is at the packet of transmission priority, packet transfer device, packet 10a can be used as the prioritized data bag and transmits.
Fig. 8 is the flow chart flow process according to the 3rd execution mode explanation flow process of retry communication control method of the present invention.Below, based on Fig. 8 the handling process of the 3rd execution mode of retry communication control method of the present invention is described.
At first, terminal installation 40a sends out on probation grade packet (step S21) in the section T1 at the fixed time.The packet that packet transfer device, packet 10a sends out a terminal installation 40a level packet on probation is forwarded to (step S22) in the IP network 1000.Enough whether the communication quality of terminal installation 40a estimation this packet that packet transfer device, packet 10a transmits in step S22 (step S23).In step S23, if enough, then enter step S24, if not enough, then enter step S25.
In step S24, terminal installation 40a sends the priority data bag, and packet transfer device, packet 10a transmits this packet as the packet of priority.
On the other hand, in step S25, terminal installation 40a stops the packet transmission in the section (for example T2) at the fixed time.Through after the predetermined amount of time T2, terminal installation 40a is based on estimating the execution probability from before level data packet communication quality CQ on probation, and based on this probability, determines whether to send a level packet (step S26) on probation.
In step S26, if be defined as passablely, then turn back to step S21, terminal installation 40a sends the packet of level on probation at the fixed time in the section T1 once more, and is transmitted by packet transfer device, packet 10a.
On the other hand, if be defined as cannot, then turn back to step S25, and section stops packet in (for example T2) and sends at the fixed time.And, the monitoring among the repeating step S26.
In addition, when beginning the forwarding priority packet from step S24, call control apparatus (not shown) begins charge (step S27) to terminal installation 40a.
In addition, also can function in an acting capacity of the function of the terminal installation 40a that puts down in writing among step S21, S23, S25 and the S26 by packet transfer device, packet 10a.
Here, above-mentioned " execution probability " carried out succinct understandable explanation.
For example, between can be at a time in the section unit terminal installation of transmission level on probation packet be made as 5 (terminal installation 40a～40e).If this 5 station terminal device is transmits data packets in identical time period unit all, then IP network is overflowed.For example, possible condition is set to: if 3 send level packet on probation with the excellent communications state in identical chronomere, terminal installation 40a, the 40b of Xuan Zeing, 40d carry out the transmission of level packet on probation at random, and the second terminal installation 40c, 40e stop the transmission of level packet on probation.For example, terminal installation 40a obtains enough excellent communications quality, the transmission after carrying out with the priority data bag based on this estimated probability in the transmission of implementing follow-up tentative level packet.In addition, for finding the sending probability of level packet on probation, exist level packet loss late on probation before is made as under the situation of R, P=1-R is made as the retry reference, after the random value of obtaining between 0～1, this random value greater than above-mentioned situation with reference to P under, carry out retry.For example, be 0.4 promptly under 40% the situation in the loss of packets rate, P=0.6, random value greater than 0.6 situation under, can retry.
The 4th execution mode of＜retry communication control method and this system 〉
Next, the 4th execution mode to retry communication control method of the present invention and this system describes.Fig. 9 is the diagrammatic sketch of the priority of packet setting being changed according to the 4th execution mode explanation of retry communication control method of the present invention.
In the present embodiment, terminal installation 40a section T1 at the fixed time determines communication quality, do not obtain under the situation of enough communication qualities in the transmission of having determined level packet on probation, finish the transmission of level packet on probation at once, after through predetermined amount of time T3, determine to send level packet on probation,, then send the packet of level on probation once more if can send.
Figure 10 is the flow chart flow process according to the 4th execution mode explanation flow process of retry communication control method of the present invention.Below, based on Figure 10 the handling process of the 4th execution mode of retry communication control method of the present invention is described.
At first, terminal installation 40a sends the packet (step S31) of level on probation.The packet that packet transfer device, packet 10a sends out a terminal installation 40a level packet on probation is forwarded to (step S32) in the IP network 1000.When terminal installation 40a sent level packet on probation, whether the communication quality of estimating this packet that packet transfer device, packet 10a transmits in step S32 at any time enough (step S33).In step S33, if enough, then enter step S34, if not enough, then enter step S36.
In step S34, determine whether to have surpassed predetermined amount of time T1.Under the situation of not passing through predetermined amount of time T1, turn back to step S33.On the other hand, under the situation of having passed through predetermined amount of time T1, enter step S35.In step S35, terminal installation 40a sends packet as the priority data bag, and packet transfer device, packet 10a then transmits this packet as the packet of priority.
On the other hand, in step S36, terminal installation 40a stops the packet transmission in the section (for example T3) at the fixed time.After through predetermined amount of time T3, terminal installation 40a determines whether to send level packet (step S37) on probation.Here, in the 4th execution mode, do not have to specify the reference that is used to estimate or determine whether to send level packet on probation, still, any method in above-mentioned first～the 3rd execution mode all is to adopt reference.Promptly, can as first execution mode, estimate based on the traffic of priority data bag, also can be as second execution mode estimate that the execution probability that can also be as the 3rd execution mode estimates based on before on probation grade of communication quality is estimated based on the grade of before level communication quality on probation.
In step S37, if be defined as passablely, then turn back to step S31, terminal installation 40a begins to send once more the packet of level on probation, and is transmitted by packet transfer device, packet 10a.
On the other hand, if be defined as cannot, then turn back to step S36, and section stops packet in (for example T3) and sends at the fixed time.And, the monitoring among the repeating step S36.
In addition, when beginning the forwarding priority packet from step S35, call control apparatus (not shown) begins charge (flow process S38) to terminal installation 40a.
In addition, also can function in an acting capacity of the function of the terminal installation 40a that puts down in writing among step S31, S33, S34 and the S36 by packet transfer device, packet 10a.
But, though what terminal installation 40a～40e of Fig. 1 was representative is personal computer and PDA terminals such as (Personal Digital Assistants), but also can be home gateway and broadband router, it carries out data packet communication with the IP (Internet Protocol) of communication target via IP network 1000.In addition, terminal installation 40a～40e is the terminal installation that the priority in the data packet communication can be set, and can also be the terminal installation that can estimate via the communication quality of the packet of IP network 1000 exchange.
In addition, what packet transfer device, packet 10a, 10b among Fig. 1,10c were representative is edge router, the packet that its receiver terminal device 40a～40e sends, and transmit packet with the priority of for example priority and level on probation.
What the processing of the processing of the processing of the processing of the step S1 among Fig. 4, S3, S5 and S6, the step S11 among Fig. 6, S13, S15 and S16, the step S21 among Fig. 8, S23, S25 and S26, the step S31 among Figure 10, S33, S34, S36 and S37 was representative is the flow process that terminal installation 40a can carry out.What in addition, the processing of the processing of the processing of the processing of step S2 among Fig. 4 and S4, the step S12 among Fig. 6 and S14, the step S22 among Fig. 8 and S24, the step S32 among Figure 10 and S35 was representative is the flow process that packet transfer device, packet 10a can carry out.But, as previously mentioned, the processing among the terminal installation 40a can be functioned in an acting capacity of by packet transfer device, packet 10a.
In addition, in the above-described embodiment, though try out under the not enough situation of the data packet communication quality of level, stopping in section T2 or the T3 at the fixed time sending the packet of trying out level is that prerequisite is narrated, but, also go for deriving available communication bandwidth based on the data packet communication quality of level on probation, and under less than this available communication bandwidth of request originally, send the priority data bag, after through predetermined amount of time T2 or T3, send the packet of level on probation in order to ensure the communication bandwidth of request originally.
Next, transmit possibility based on packet of the present invention and determine that the execution mode of method, packet transfer device, packet and flow process describes.
Figure 11 is the diagrammatic sketch according to the configuration of an execution mode of packet transfer device, packet of the present invention.
In Figure 11, the converter section 112 that the packet forwarding is carried out in processing of circuit portion 111, the inside that packet transfer device, packet 11 is connected with the physical circuit of outside by realization constitutes.Begin to transmit the packet 99 that has packet header from processing of circuit portion 111.In addition, processing of circuit portion 111 is also by constituting with the physical circuit handling part 1114 that is connected of external physical circuit based on the classification portion 1111 of packet header Information Selection data package processing method, the data rate monitoring portion 1112 that monitors the data rate of each grade, the formation portion 1113 that reads control, the realization of carrying out on the packet 2 for physical circuit.Data rate of the present invention control is carried out by above-mentioned data rate monitoring portion 1112.In addition, data rate monitoring portion 1112 have described later, stored the threshold capacity BWh that does not abandon priority (H level) packet and do not abandoned the storage part of the threshold capacity BWmh of level (M level) packet on probation.
Figure 12 is the diagrammatic sketch according to the configuration of an execution mode of packet transfer device, packet of the present invention.
In packet repeater system shown in Figure 12, at connecting terminal device 50a～50c, 51a～51c in the data packet communication net of terminal installation 52a～52c, 53a～53c, terminal installation 50a～50c, 51a～51c are connected with packet transfer device, packet 11a, terminal installation 52a～52c, 53a～53c are connected with packet transfer device, packet 11c, and packet transfer device, packet 11a and packet transfer device, packet 11c are connected by packet transfer device, packet 11b.
For example, send under the situation of packet in each each in terminal installation 52a and 52b from terminal installation 50a and 50b, the ToS value that becomes the terminal installation 50a of data packet transmission terminal and the packet that 50b sends to target terminal apparatus 52a and 52b is set to try out level (M level) and transmit.On the other hand, from each terminal installation 51a and 51b under the situation of each terminal installation 53a and 53b transmits data packets, the ToS value that the terminal installation 51a～51b that becomes the data packet transmission terminal sends to the packet of target terminal apparatus 53a and 53b is set to priority (H level) and transmits.
Packet transfer device, packet 11a is the M level with the data packet stream graduation of terminal installation 50a and 50b forwarding respectively, the data packet stream graduation that terminal installation 51a and 51b transmit is the H level, and with priority separately data packet stream is forwarded among the packet transfer device, packet 11b.Packet transfer device, packet 11b will be forwarded to from the data packet stream that packet transfer device, packet 11a receives the packet transfer device, packet 11c.Packet transfer device, packet 11c will be forwarded to from the data packet stream that packet transfer device, packet 11b receives terminal installation 52a, 52b and 53a, the 53b based on the target information of this packet header record.In addition, the priority of packet also can also can be changed in the identical data stream communication of same terminal device by each terminal installation decision.
Figure 13 is the diagrammatic sketch of the processing in the summary description packet transfer device, packet.Figure 14 A and 14B are the flow chart of summary table registration according to the method in the packet forwarding apparatus.
As shown in figure 13, the invention is characterized in, circuit capacity BW has been designed two threshold values, that is, do not abandon the capacity BWmh of M level packet and do not abandon the capacity BWh of H level packet.
The ToS value that present transmission terminal device 50c is sent to the data packet stream among the receiver terminal device 52c is made as the M level, and the forwarding of beginning packet.The packet transfer device, packet 11a (step S41) that has received this data packet stream reads the ToS of this data flow, and this data packet stream is categorized as the M level.
Packet transfer device, packet 11a measurement comprises the packet that terminal installation 50c receives (data rate: bwMin), M level packet (data rate: bwm) and H level packet (data rate: total data flow velocity (bwh+bwm+bwMin) (step S42) bwh).If this total data flow velocity surpasses threshold value BWmh, then continue forwarding (step S43), and forgo data bag not.If the total data flow velocity surpasses threshold value BWmh, then packet transfer device, packet 11a abandons the new M level packet (step S44) that flows into.
On the other hand, the ToS value that present transmission terminal device 50c is sent to the data packet stream among the receiver terminal device 52c is made as the H level, and the forwarding of beginning packet.The packet transfer device, packet 11a (step S45) that has received this data flow reads the ToS of this data flow, and this data packet stream is categorized as the H level.
Packet transfer device, packet 11a measurement comprises the packet that terminal installation 50c receives (data rate: bwMin), H level packet (data rate: bwh) and M level packet (data rate: total data flow velocity (bwh+bwm+bwMin) (step S46) bwm).If this total data flow velocity surpasses threshold value BWh, then continue forwarding (step S47), and forgo data bag not.If the total data flow velocity surpasses threshold value BWh, then packet transfer device, packet 11a abandons the new H level packet (step S48) that flows into.
Figure 13 represents following situation.That is, present situation is that data rate is that M level packet and the data rate of bwm is that the H level packet of bwh is in and communicates by letter.There, be the M level packet of bwMin because if there is the data rate that will newly import, then the total data flow velocity has surpassed BWmh, so this new M level packet is abandoned.On the other hand, there, be the H level packet of bwHin, if the total data flow velocity does not surpass BWh, so this new H level packet is awarded reason and is forwarded because if there is the data rate that newly to import.
Figure 15 is the diagrammatic sketch with time shaft and bandwidth utilization rate, and the example of the processing of carrying out in its expression packet transfer device, packet for example, utilizes ToS control priority to transmit the communication quality control and treatment of handling.Identical among this figure with Figure 13, be provided with two threshold value BWmh and BWh too.
As mentioned above, in packet repeater system with prerequisite technology of the present invention, terminal installation has been transmitted after the packet of level on probation (M level) in the section at the fixed time, if affirmation is not abandoned this M level packet but arrived target terminal apparatus (in addition, in this case, do not have the method for consideration by above-mentioned retry Control on Communication), the forwarding that then begins H level packet replaces M level packet to transmit.
In Figure 15, as the part of ※ 1, be the M level packet of bwMin, then because of bwh+bwMin＜BWmh, so this packet becomes the H level and continues to be forwarded if under this state, flow into data rate.But, shown in ※ 3, if under this state, also flow into the M level packet that data rate is bwMin, then because bwh+bwMin＞BWmh is abandoned so be somebody's turn to do the new packet that flows into.
On the other hand, as the part of ※ 4,, under the situation of H level packet,, also can be awarded and manage and be forwarded even capacity surpasses BWmh from first.Beginning at first is exactly that the situation of H level packet comes across, and as described later, is preparing two identical circuit in advance in order to tackle fault, and the data flow that has produced fault is switched to the situation of another circuit, or comes across the situation of transfer.In addition, even be the packet of H level from beginning at first, if surpassed capacity BWh owing to this inflow makes the total data flow velocity, then or abandon the H level packet of this new inflow, if perhaps had M level packet then abandoned this M level packet.
Next, to coming the residual capacity of estimated bandwidth, and determine whether that carrying out the method that new packet transmits according to the quantity in the token bucket describes by the quantity of measuring in the token bucket.
Figure 19 is that expression packet forwarding possibility is determined the diagrammatic sketch of method according to applied second representative instance of the present invention.
Here, prepare two token bucket I and the II that size is respectively Bh and Bm (byte).And the token bucket rate with token bucket I and II is made as Rh and Rm (byte per second) respectively.In addition, establish token bucket rate Rh＞token bucket rate Rm.In addition, respectively the token counter variable of packet I and II is made as TcI and Tc II (byte).In addition, respectively the due in value before the normal data packet of token bucket I and II is made as LCT I and LCT II (second).In addition, respectively the calculating variable of token bucket I and II is made as TcI ' and Tc II '.In addition, the data packet arrival that arrives is made as ta (second) constantly, and this length of data package is N (byte).In addition, the initial value of token bucket counter Tc I and Tc II is respectively the size of token bucket I and II, that is, and and Bh and Bm.In addition, A (byte) is the offset that is used to make M level packet can not passed through by mistake in the determining of token bucket II, this is feature of the present invention place.
Token bucket I and II in Figure 13, the corresponding respectively capacity BWmh that does not abandon the capacity BWh of H level packet and do not abandon M level packet.
In Figure 16,, then at first calculate the value (step S51) of formula (1) and (2) if new data packets arrives.
Tc?I’＝Tc?I+Rh×(ta-LCT?I) ......(1)
Tc?II’＝Tc?II+Rh×(ta-LCT?II)......(2)
Here, Tc I ' and Tc II ' are respectively in the token bucket I in the moment that new data packets arrives and the token counter value of II, and according to the elapsed time section that the arrival of before normal data packet begins, increase with bucket speed.Therefore, if these are worth the size greater than this new data packets, then this packet is received.And then carry out following subsequent treatment.
At first, determine that whether Tc I ' is less than length of data package N (step S52).Under the situation of Tc I ', because M level packet and H level packet both sides are not received, so determine that this new data packets is for violating packet (step S53) less than length of data package N.At this moment, because do not receive packet and abandon, so do not upgrade token counter value (step S54) yet.
On the other hand, Tc I ' is greater than or equal under the situation of data packet length N in step S52, next, determines whether this new data packets is M level packet (step S55).In new data packets is under the situation of M level packet, next determine Tc II ' whether less than on data packet length, add offset and (N+A) (step S56).
At Tc II ' less than adding on the data packet length under offset and the situation (N+A), because M level packet is not received, so this new data packets is confirmed as violating packet (step S57).At this moment, because do not receive packet and abandon, so do not upgrade the value (step S58) of token counter.
On the other hand, in step S56, Tc II ' more than or equal to add on the data packet length offset (N+A) and situation under because M level packet is awarded reason, so this new data packets is confirmed as normal M level packet (step S59).At this moment, upgrade token counter (step S60) based on formula (3) and (4).
Tc?I＝min(Tc?I’，Bh)-N ......(3)
Tc?II＝mix(Tc?II’，Bm)-N ......(4)
On the other hand, in step S55, not under the situation of M level packet, because this new data packets must be a H level packet, so determine that this new data packets is a normal H level packet (step S61) in new data packets.At this moment.Upgrade token bucket counter (step S62) based on formula (5) and (6).
Tc?I＝min(Tc?I’，Bh)-N ......(5)
Tc?II＝max(min(Tc?II’，Bm)-N，0)......(6)
In formula (6), " min (Tc II ', Bm)-N " and the bigger side of " 0 " middle selection, H level packet is not violated for token bucket I yet, thereby passes through.Under situation about violating, though because the token counter value of token bucket II less than 0, also can return 0 to increase from 0 then to it again for token bucket II.
Figure 17 A and 17B are the diagrammatic sketch of object lesson of variation of the token counts value of expression token bucket.
In Figure 17 A and 17B, the longitudinal axis and transverse axis are represented the time in token counter value and elapsed time respectively.Here, #1 and #2 because the token counter value when arriving greater than length of data package, so be confirmed as normal data packet and pass through.For #3, because be M level packet, and the token counter value of token bucket II is less than the value that has increased offset on data packet length, so abandoned as violating packet.For #4 and #5, though token bucket II is violated, because be H level packet, so pass through.#6 because the token counter value of token bucket I less than length of data package, so in the step S52 of Figure 16, priority all is used as to be violated packet and abandon.#7 and #4 and #5 pass through equally.#8 and #3 are abandoned equally.#9 and #10 and #4, #5 and #7 pass through equally.#11 and #6 are abandoned equally.#12 and #2 pass through equally.#13 and #3 and #8 are abandoned equally.#14 and #3 are same, because the token counter value of token bucket II adds the value of offset less than data packet length, are abandoned as violating packet.
Figure 18 is that expression packet forwarding possibility is determined the diagrammatic sketch of method according to applied first representative instance of the present invention.
Between two data packet forwarding apparatus 11h, 11i, consider fault and be provided with two circuit A and circuit B.Here, in each circuit, data flow connects the distribution load of data flow according to pattern.In addition, at present, be located at the H level packet that flows into data rate bwhA among the circuit A, in circuit B, flow into the M level packet of data rate bwhB and the H level packet of data rate bwhB.
Therefore, be located among the circuit A and break down, the H level packet of data rate bwhA is transformed among the circuit B of reserved circuit.At this moment, if BWmh 〉=bwhA+bwhB+bwmB, then all packets can not abandoned.But, under the situation of BWmh＜bwhA+bwhB+bwmB, do not abandon though can in H level packet, not produce, can in M level packet, produce and abandon.
Figure 19 is that expression packet forwarding possibility is determined the diagrammatic sketch of method according to applied second representative instance of the present invention.
In Figure 19, as under the terminal installation 60b of portable terminal and the situation that terminal installation 60a communicates by letter, at first on initial position, terminal installation 60b sends definite that level (M level) packet on probation carries out communicating by letter to the path by packet transfer device, packet 11d, 11e, 11f.If receive and awarded reason, then thereafter, terminal installation 60b sends the packet (size: bwh1f) communicate with terminal installation 60a of priority (H level).Afterwards, when communicating by letter with terminal installation 60a, terminal installation 60b moves to and utilizes on the position that the path passed through packet transfer device, packet 11d, 11e, 11f communicates.In a word, transfer.In the transfer of being correlated with, communication must continue.Therefore, packet transfer device, packet 11e is when transferring, and not carrying out by M is that the communication possibility of packet is determined, and must be from just H level packet being transmitted to packet transfer device, packet 11g at first.At this moment, if adopt the processing method of the invention described above, then in the packet transfer device, packet 11f that so far from packet transfer device, packet 11e, has received packet, produce idle bandwidth.Restarting to receive the packet transfer device, packet 11g of packet from packet transfer device, packet 11e, if BWmh 〉=bwh1f+bwh1g+bwm1g (size of the original packet of transmitting of packet transfer device, packet 11g is made as bwh1g+bwm1g) then begins to receive H level packet.But, under the situation of BWmh＜bwh1f+bwh1g+bwm1g, do not abandon though can in H level packet, not produce, can in M level packet, produce and abandon.
In addition, in the prior art under the situation of Xu Shu adaptive-bandwidth type data flow, in the present invention, when enlarging bandwidth and total data flow velocity and having surpassed capacity BWmh,, then it is abandoned if M level packet is forwarded.If do not have M level packet, then allow bandwidth variations up to capacity Bwh.
In addition, utilize the method for single bandwidth threshold can be called static schema, utilize the method for two bandwidth threshold also can be called elastic model.
In addition, in the above-described embodiment, though terminal installation is transmitted the packet that priority is expressed as the ToS value, and packet transfer device, packet is respectively corresponding to the priority allocation grade of packet and transmit, and still, the present invention does not limit therewith, also can replace terminal installation to carry out this operation with packet transfer device, packet (edge router and home gateway), in addition, also can be applied to, but come the communication of divided rank according to importance not according to each priority divided rank.
Next, the execution mode to ToS conversion of the present invention packet repeater system, packet monitoring method, call control apparatus and the packet transfer device, packet relevant with the packet data flow monitoring describes.
Figure 20 is a diagrammatic sketch of representing the configuration of packet repeater system according to one embodiment of the present invention.Figure 21 is the diagrammatic sketch of the packet priority level in the expression packet repeater system.
Because the packet repeater system 1a of present embodiment carries out the forwarding of IP (Internet Protocol) packet, thereby carry out the real time communication of carrying out audio communication and so on by the IP packet, and the request establishment of sending according to terminal installation and the calling of the real time communication between the other-end device, thereby the packet between the control terminal device is transmitted.
In addition, the packet repeater system is based on the information on services control service quality (QoS:Quality of Service) of IP packet header, and based on contract each terminal installation determines the service quality of the IP packet of transmission.
In Figure 20, the packet repeater system 1a of present embodiment possesses: carry out a plurality of packet transfer device, packet 12a～12d that packet is transmitted; Call control apparatus 20, its with these a plurality of packet transfer device, packet 12a～12d communicate and control respectively with packet transfer device, packet 12a, 12d are connected terminal installation 70a, 70d between the calling of audio communication etc. the time, stored the contract information of the service quality of each terminal installation.
Call control apparatus 20 possesses: contract information determination portion 201, its determine terminal installation 70a, 70b actual request COS etc. whether be included in the COS that comprises in the contract information; The ToS notice portion 202 of each calling, it is notified to packet transfer device, packet 12a, 12d with ToS information when each calling being sent packet monitoring indication; Monitoring information is notice portion 203 in advance, and it is notified to packet transfer device, packet 12a, 12d with monitoring information when per call being sent packet monitoring indication; The CCF portion 204 of the calling between the control terminal device; The prestore contract information storage part 205 of contract information, this contract information comprises the operable priority level translative mode of each terminal installation of adjusting at least.
Packet transfer device, packet 12a (12d) possesses: the packet rewriting 121a of portion (121d), when its communication service type that is provided with is inconsistent, the packet COS that receives is rewritten as the communication service type that is provided with in the monitoring information in the COS of the IP packet header that terminal installation 70a (70b) sends out and monitoring information; Packet is abandoned the 122a of portion (122d), when its communication service type that is provided with in the COS of the IP packet header that terminal installation 70a (70b) sends out and monitoring information is inconsistent, and the packet of abandoning receiving; The rank conversion monitoring 123a of portion (123d), the packet of the communication that its monitoring terminal set 70a (70b) sends out, in the COS of determining IP packet header whether with when the COS of the communication that is provided with in the monitoring information is consistent, the conversion Monitoring Data bag of the priority level of data-driven bag; The packet data flow monitoring 124a of portion (124d), the data rate of the packet of its monitoring communication, and whether the specified data flow velocity is in the scope of maximum reference value and minimum reference value; Packet is transmitted service portion 125a (125d), and it transmits packet with the priority between the terminal installation.
Packet transfer device, packet 12a～12d is based on the type of service (tos) that is provided with in the packet header that receives, and distribute data bag priority level is DiffServ (Differentiated Services) for example, and transmits.For example shown in Figure 21, priority level is divided into priority (H level) and level on probation (a M level), be any grade based on COS with the packet marking that receives, under the order of the grade of mark, transmit packet.
The contract information of call control apparatus 20 storages comprises COS, for example represent the data communication that does not have bandwidth to guarantee, real time communication etc. with bandwidth assurance or forward delay, delay change and the assurance of loss of packets rate, the COS of terminal request with allow communication when the contract service type is consistent, if but inconsistent, refuse this communication.
And then, the COS of packet and packet priority level, corresponding with packet priority level translative mode, call control apparatus 20 with these monitoring informations by monitoring information in advance notice portion 203 from call control apparatus 20, send in the packet transfer device, packet.
Figure 22 is the flow chart that the expression receipt of call is provided with the flow process of carrying out in the call control apparatus in request time.
In packet repeater system 1a, attempt to be provided with at terminal installation 70a under the situation of calling of real time communication, at first, terminal installation 70a will comprise expression and wish that the call setup request of information etc. of the COS of the information of object of communication and real time communication sends in the call control apparatus 20.
If call control apparatus 20 receives the call setup request of sending from terminal installation 70a, then obtain the COS (step S71) of request communication in the information from be included in call setup request, the COS of more having obtained and be stored in the COS of being write in the contract information in the contract information storage part 205 (step S72) about call source terminal installation 70a, do not meet COS at contract information (in step S72 for negate to judge) if carried out the COS of the communication of call setup request, then refusal is called out (step S76).
If the COS of having carried out the communication of call setup request meets the COS of contract information (being sure determining in step S72), then in the information of destination address is from the contract information relevant with target terminal apparatus 70b, read out target terminal apparatus COS (step S73), and the COS (step S74) that lists in the COS of the communication of comparison call setup request and the contract information of target terminal apparatus 70b, if the COS in the call setup request and the COS that lists in the contract information of target terminal apparatus 70b inconsistent (judging for negative in step S74) are then refused this calling (step S76).
If the COS in the call setup request is included in the COS (being sure determining in step S74) that lists in the contract information, then in order whether to communicate by letter to target terminal apparatus 70b inquiry, and will comprise the call setup request of the information of call source terminal installation 70a and the information of the COS of communicating by letter etc., send to (step S75) among the target terminal apparatus 70b.
If target terminal apparatus 70b receipt of call from call control apparatus 20 is provided with request, then determine the information of call source terminal installation 70a and the information of the COS of communicating by letter etc., if be defined as and can communicate by letter, then the content that can communicate by letter returns to call control apparatus 20.
Figure 23 is the flow chart that the flow process of carrying out in call control apparatus when calling out has been set up in expression.
If call control apparatus 20 can be communicated by letter by the terminal installation 70b of target notice, then identifying informations such as identification number are assigned to calling (step S81), award the calling that reason has sent, and the information of call source terminal installation 70a and target terminal apparatus 70b and the information of the COS of communicating by letter etc. are stored (step S82) together with relevant identifying information.
Next, the information that call control apparatus 20 will comprise the packet that exchanges between identification terminal device 70a, the 70b (for example, both sides' IP address and portal number information etc.) with the monitoring information of the information of the COS of communicating by letter and the identifying information of calling etc., be notified to packet transfer device, packet 12a that has regulated call source terminal installation 70a and the packet transfer device, packet 12d that has regulated target terminal apparatus 70b respectively, and indication Monitoring Data bag (step S83).
Next, call control apparatus 20 notification call source terminal device 70a and target terminal 70b both sides have set up calling (step S84).
Real-time Transport Protocol) if receive and set up the notice of calling out, then (real time transport protocol: real-time communication protocol such as begins respectively to carry out real time communication to target terminal apparatus according to RTP for terminal installation 70a, 70b.
Packet transfer device, packet 12a, the 12d that has received COS retrieves monitoring information based on from the monitoring information of call control apparatus 20 information that receives of notice portion 203 in advance from information on services.The rank of packet transfer device, packet 12a, the 12d conversion monitoring 123a of portion, 123d be the packet that sends out of monitoring terminal set 70a, 70b respectively, and whether the COS in definite IP packet header is consistent with the COS of the communication that is provided with in the monitoring information.In addition, the packet data flow velocity that the packet data flow monitoring 124a of portion of packet transfer device, packet 12a, 12d, 124d monitor this communication, and whether the specified data flow velocity is between maximum reference value and the minimum reference value.In addition, the data rate monitoring based on this maximum reference value and minimum reference value can realize that under the individual unit as the above-mentioned packet data flow monitoring 124a of portion (124d) dependency structure can reduce equipment cost.
If the corresponding priority level of the priority level of IP packet header and the COS of communication is consistent, and data rate is in the scope of maximum reference value and minimum reference value, then packet transfer device, packet 12a, 12d determine that it is suitable packet, and this packet is transmitted with its priority level.
Using under the leading situation of awarding the reason control mode based on measurement of terminal, the priority level in communication will change.Therefore, the present invention uses the common translative mode to the packet grade of call control apparatus 20 and packet transfer device, packet 12a, 12d, and provides common translative mode with identifier.Call control apparatus 20 is notified to packet transfer device, packet 12a, 12d with the translative mode identifier when designated call being sent packet monitoring indication.The rank conversion monitoring 123a of portion, the 123d of packet transfer device, packet 12a, 12d are after the specified data bag is suitable, be referenced to the translative mode corresponding with the identifier of having notified, thus, from call control apparatus 20, do not receive single indication successively, but find out the suitable priority level of the next packet that arrives and data rate thereupon, and the monitoring of preparing next packet.Example as the suitable pattern (translative mode) of priority level describes with reference to above-mentioned retry communication control method.This pattern comprises: determine to communicate by letter and send level (M level) test data bag on probation in 5 seconds the time period or the longer time period of communication beginning; Be defined as predetermined stand-by period section being set can not communication the time from the communication conditions of test data bag; If be defined as to communicate by letter then continue to send prioritized data bag etc. with priority (H level).
Packet transfer device, packet 12a, 12d are inconsistent at the priority level of the IP packet header priority level corresponding with the COS of communication, perhaps data rate surpasses maximum reference value, perhaps under the situation of data rate less than minimum reference value, the breach of contract notice that will comprise the identifying information of calling out and violate cause information sends to call control apparatus 20.
If call control apparatus 20 receives the breach of contract notice, then from the CII call identify index of having notified, read the information of the paired terminal device in the communication, and carry out notice to each terminal installation request cut-out and call release.
In addition, in the present embodiment, also check the treaty content of target terminal apparatus, be higher than under the situation of contract grades that refusal is set up and called out in the grade of asking.Also can set up and call out, also can or make the priority level of communication be fit to the treaty content of target terminal apparatus and set up calling from target terminal apparatus to the call source terminal installation from the call source terminal installation to target terminal apparatus according to the treaty content of target terminal apparatus.
A modification as present embodiment, in packet transfer device, packet 12a, 12d, when the COS of communicating by letter that is provided with is inconsistent, abandon the packet that the 122a of portion, 122d abandon having received by packet in the COS of the packet header of the IP packet that terminal installation 70a, 70b send and monitoring information.Can prevent from the inflow of the packet of breach of contract from also can only meet the communication of the packet of contract according to this configuration.
Another modification as present embodiment, in packet transfer device, packet 12a, 12d, when the COS of communicating by letter that is provided with in the COS of the packet header of the IP packet that terminal installation 70a, 70b send and monitoring information was inconsistent, the COS of the packet that will have been received by the packet rewriting 121a of portion, 121d was rewritten as the COS of the communication that is provided with in the monitoring information.The packet of breach of contract can be transmitted as the packet that is fit to contract information according to this configuration, thereby only the packet that meets contract be communicated.
Next, this single unit system of the packet data flow monitoring 124a of portion (124d) by above-mentioned describes the monitoring that can realize the data rate upper and lower bound by concrete example.Figure 24 represents and the diagrammatic sketch that arrives the variation in the packet corresponding token counter according to embodiments of the invention.
In Figure 24, will be in groups (burst) amount B1 be made as the initial value of token counter, corresponding with data packet arrival, from the token counter value of token counter, deduct data packet length, afterwards, increase corresponding with leakage rate.In example shown in Figure 24, because the packet of representing according to #3 arrives the amount (lower limit) in groups that surmounted, in other words, because data rate has surpassed maximum reference value, so this packet is abandoned owing to violate.
The invention is characterized in that the higher limit of token counter is made as greater than initial value, and token counter also allows to be increased to certain degree greater than initial value.In Figure 24, higher limit is set for also to have increased B2 byte (minimum reference value of data rate) from initial value.According to this computing, can also monitor the situation of the arrival (data rate is few) of small amount of data bag.
In addition, the arrival of monitoring small amount of data bag must be confirmed the token counter value under the different timing that arrives from packet.Therefore,, have: in the packet before sending, calculate token counter value needed time period before exceeding the upper limit, and monitoring is set regularly as this monitoring method.In addition, monitoring periodically is set regularly, thereby arrives irrelevant with packet and periodically monitor token counter.In example shown in Figure 24, after the packet that #7 represents arrives, because the token counter value has surpassed higher limit (data rate is less than minimum reference value), so owing to the data packet communication quantity not sufficient has been cut off corresponding communication.
Next, the execution mode to the special-purpose monitoring device of the dispersion of carrying out packet monitoring relevant packet repeater system of the present invention, packet monitoring method, call control apparatus, packet transfer device, packet and monitoring device describes.
＜adopted first execution mode of the present invention of single special-purpose monitoring device 〉
Figure 25 is the diagrammatic sketch according to the configured in one piece of first execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device.
The packet repeater system 1b of present embodiment is because carry out the forwarding of IP packet equally with above-mentioned system, especially carry out this real time communication of audio communication by the IP packet, so request of sending according to terminal installation, the calling of the real time communication of foundation and other-end device, and the packet between the control terminal device is transmitted.
In Figure 25, the packet repeater system 1b of present embodiment possesses: carry out a plurality of packet transfer device, packet 13a～13d that packet is transmitted; Control respectively with terminal installation 80a, 80b that packet transfer device, packet 13a, 13d are connected between the call control apparatus 21 of calling of audio communication etc.; Monitoring device 30 in packet that monitoring receives and the address that is forwarded to appointment.
The packet that this packet repeater system 1b uses monitoring device 30 can monitoring terminal set to send (is checked the content of packet, increase change in packet, the forgo data bag is checked transfer quality, transmission flow), call control apparatus 20 is provided with the address of the terminal installation of monitoring.
Packet transfer device, packet 13a (13d) has the packet forwarding 131a of portion (131d), thereby transmits packet with priority level separately between terminal installation.
In addition, call control apparatus 21 possesses: the user management portion 211 that manages the user profile of each terminal installation; The communication history management department 212 of the communication history of the packet that exchanges between the device of office terminal; The call state management department 213 of call state between the device of office terminal; When being provided with request, receipt of call determines whether the monitoring objective determination portion 214 of this calling as monitoring objective; Address notification portion 215, it gives the terminal relevant with calling with the address notification of monitoring device 30 when receipt of call is provided with request; Monitoring Department of Communication Force 216, its information with monitoring objective send monitoring device 30 to and indication begins monitoring.
In addition, monitoring device 30 has: packet monitoring portion 301, and it transmits the general data bag that exchanges between the terminal installation, and reads this content; Packet rewriting portion 302, it rewrites the target and the transmission source of these packets.
Figure 26 is the flow chart of packet repeater system flow process of execution when receipt of call is provided with request of expression first execution mode.
In this packet repeater system 1b, be provided with at terminal installation 80a under the situation of calling of real time communication, at first, the call setup request that will comprise the information of destination address of the communication of hope and the information of the COS of communicating by letter etc. is forwarded in the call control apparatus 21.
If call control apparatus 21 receives the call setup request that sends from terminal installation 80a, then shown in the flow chart of Figure 26, determine whether among terminal installation 80a or the target terminal apparatus 80b either party is monitoring objective terminal installation (step S91).
If all terminal installations are not the monitoring objective terminal installations, then call control apparatus 21 call setup request that will comprise the information of call source terminal installation 80a and the information of the COS of communicating by letter etc. sends among the target terminal apparatus 80b, and inquiry target terminal apparatus 80b whether can communicate by letter (step S93).
If target terminal apparatus 80b receipt of call from call control apparatus 21 is provided with request, then check the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., can communicate by letter if be judged to be, will represent that then but the communication notifications that can communicate by letter returns to call control apparatus 21, and, begin real time communication from terminal installation 80b to terminal installation 80a by RTP real-time communication protocols such as (Real-time Transport Protocol).
If but call control apparatus 21 receives communication notifications from target terminal apparatus 80b, then definite this calling is set up; Identifying informations such as identification number are distributed to the calling that has been provided with; And the information of call source terminal installation 80a and target terminal apparatus 80b and the information of the COS of communicating by letter etc. are stored together with relevant identifying information; But the communication notifications that will comprise the address information of target terminal apparatus 80b sends to call source terminal installation 80a as target address information.
,, begin real time communication from terminal installation 80b to terminal installation 80a then by real-time communication protocols such as RTP if but terminal installation 80a receives communication notifications.
Session Initiation Protocol) here enumerated SIP (conversation initialized protocol: as the object lesson of described calling control flow.In addition, can when replying and determined communication mode, target terminal apparatus determine also whether terminal installation is monitoring objective.
Turn back in the flow chart of Figure 26, when call accepted is provided with request, in call source, target terminal apparatus either party becomes in the monitoring objective terminal installation, the address that call control apparatus 21 will be included in the information of the call source terminal installation 80a in the call setup request whether inquiry target terminal apparatus 80b can communicate by letter is rewritten as the address of monitoring device 30, and sends to (step S92) among the target terminal apparatus 80b with the information of the COS of communication etc.
If target terminal apparatus 80b receipt of call from call control apparatus 21 is provided with request, then check the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., if be defined as and communicate by letter, but will represent that then the communication notifications that can communicate by letter returns to call control apparatus 21.Then corresponding to the address information in the address information that is arranged on call source (address information of monitoring device 30) beginning real time communication.
Figure 27 is the flow chart of packet repeater system flow process of execution when setting up calling of expression first execution mode.
, determine that calling sets up if but call control apparatus 21 receives communication notifications from target terminal apparatus 80b; Shown in the flow chart of Figure 27, the monitoring that transmission is provided with the address information, monitoring type information, the service type information of communicating by letter of call source terminal installation 80a and target terminal apparatus 80b etc. begins to be indicated to monitoring device 30 (step S101).
Then, call control apparatus 21 distributes identifying informations (step S102) such as identification number in the calling that has been provided with, and the information of call source terminal installation 80a and target terminal apparatus 80b and the information of the COS of communicating by letter etc. are stored (step S103) together with relevant identifying information, and, but will comprise that the communication notifications as the address information of the monitoring device 30 of target address information sends to call source terminal installation 80a (step S104).
Monitoring device 80a receives monitoring and begins indication, and storage is arranged on the information of monitoring in beginning to indicate, thereby according to the address information of terminal installation 80a and 80b information is retrieved.
But monitoring device 80a receives communication notifications, and corresponding to address (address information of monitoring device 30) the beginning real time communication that is set in the target address information.
In the calling of such monitoring, when terminal installation 80a transmitted packet, terminal installation 80a sent packet and arrives, but be arranged on be included in the communication notifications the address (address of monitoring device 30) of target address information.This packet is forwarded and arrives in the monitoring device 30 in the packet repeater system.
Figure 28 be the expression first execution mode the packet repeater system in carry out 59 the monitoring flow processs flow chart.
Monitoring device 30 is shown in the flow chart of Figure 28, transmission source address with reference to the packet that receives, from transmission source address, read monitoring type and real target address information (address information of terminal installation 80b) (step S111), after monitoring processing (step S112) according to the monitoring type, the destination address of the packet that receives is rewritten as the address (step S113) of terminal installation 80b, and the transmission source address of the packet that receives is rewritten as this unit address (step S114), the packet that the address has been rewritten is forwarded to (step S115) in the next packet transfer device, packet.This packet in the packet repeater system, be forwarded and incoming terminal device 80b in.
Transmitting destination address at terminal installation 80b is to make the address (address of monitoring device 30) that is provided with in the address information of call source terminal installation of call setup request, as the packet of destination address.This packet is forwarded in the packet repeater system, and arrives in the monitoring device 30.
Monitoring device 30 is with reference to the transmission source address of the packet that receives, and read and monitor type and real target address information (address information of terminal installation 80a), after monitoring processing according to the monitoring type, destination address is rewritten as the address of terminal installation 80a, and transmission source address is rewritten as this unit address, and be forwarded in the next packet transfer device, packet.This packet in the packet repeater system, be forwarded and incoming terminal device 80a in.
Like this, the communication between terminal installation 80a, the 80b can be carried out via monitoring device 30, and monitors during the user of terminal installation 80a, 80b is unwitting.
Then, if sign off also send to cut off call request from terminal installation 80a, 80b, then call control apparatus 21 monitoring that will comprise the address information of terminal installation 80a, 80b finishes indication and sends in the monitoring device 30, and the CII call identify index stored of deletion, the information of terminal installation, the information on services of communication etc.
If monitoring device 30 reception monitorings finish indication, then deletion is stored in wherein and is arranged on the terminal installation 80a that monitors in beginning to indicate, the information of 80b.
Like this, in the present embodiment because call control apparatus 21 is when being provided with calling, with the address information of monitoring device 30 as target address information, be notified to into monitoring target with call out relevant terminal installation; Be rewritten as in transmission source address, destination address and the transmission of the packet that receives in the monitoring device 30.So the communication of Hu Jiaoing arbitrarily can be passed through monitoring device 30, and need not to possess monitoring function in each marginal date packet forwarding apparatus, thereby can reduce equipment cost.
In addition, because the present invention is with single monitoring device Monitoring Data bag, thus need not to collect monitoring result from a plurality of packet transfer device, packets, thus management cost can be reduced.
In the above description, though definite end message of monitoring objective based on registered in advance,, selected also to have considered following modification about the logic of monitoring target and monitoring target.
The object of monitoring can be a terminal, thus monitoring each calling relevant with terminal.。The object of monitoring can be the calling of appointment.Perhaps Jian Ce object can be the user, thus monitoring and user-dependent each calling.
Select as logic, for example select arbitrarily, the result's who monitors before can being based on selection, based on the selection that is documented in the communication attributes in the call control signals, based on the selection that is provided with the appearance of the route device that is arranged on the call setting signal.
Example based on the result's who monitors before selection will describe.Select monitoring at first arbitrarily, and monitoring out under the situation that may have abnormal operation, with this content record in the communication history management department 212 of call control apparatus 21.Again when same terminal or user send signal,, and from the higher part of abnormal operation possibility, select as monitoring objective with reference to the communication history of having stored.
In selection, consider that the terminal of malice (fraudulent) brings the influence of communication network, the target of communications setting that the request communication bandwidth is bigger for monitoring based on communication attributes.Even suppose the malice terminal, it is also less that request communication bandwidth less communication brings the influence of communication network, also can be as monitoring objective.
With the example of explanation based on the selection of the appearance of the route device that is arranged on the call setting signal.Have between transmission terminal and monitoring device that communication common carrier provides reliably and the home gateway device of terminal monitoring function is provided.The reliable terminal software that perhaps exists communication common carrier to provide.In this case, in the call setting signal, put down in writing reliability, received of the priority level decline then monitoring calling of the call control apparatus of this signal monitoring objective.
In addition, be terminal though monitoring objective has been represented in the explanation here, and according to the example of its Address Recognition communication.But at monitoring objective is under the situation of calling out, and according to the IP address of the terminal of transmitting and receiving with corresponding to the portal number of calling out calling is discerned.In this case, call control apparatus must obtain port from monitoring device, and port is notified to call source terminal installation and target terminal apparatus after determining monitoring objective.
Figure 29 be expression packet repeater system monitoring to as if call out and receive the flow chart of the flow process of carrying out under the situation of call setup request.
In this case, in step S122, call control apparatus 21 obtains port from monitoring device, thereby to call source terminal installation and target terminal apparatus notice port.Other processing is identical with processing shown in Figure 26.
＜adopted second execution mode of the present invention of single special-purpose monitoring device 〉
Figure 30 is the diagrammatic sketch according to the configured in one piece of second execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device.
The packet repeater system 1c of present embodiment is characterised in that, the data packet addressed that it will exchange under the calling that becomes monitoring objective, rewrite by the packet transfer device, packet of regulating the terminal installation that sends this packet or monitoring device, even also can monitor to terminal installation the address notification of monitoring device.
In Figure 30, the packet repeater system 1c of present embodiment possesses: a plurality of packet transfer device, packet 14a～14d that transmit packet; Call control apparatus 22, its control respectively with terminal installation 80a, 80b that packet transfer device, packet 14a, 14d are connected between the calling of audio communication etc.; Monitoring device 31, the packet that its monitoring receives also is forwarded in the destination address of appointment.
Packet transfer device, packet 14a (14d) possesses: the packet forwarding 141a of portion (141d), and it transmits packet with priority level separately between terminal installation; Rewrite the target of the packet of transmitting and the packet rewriting 142a of portion (142d) of transmission source address.
The packet that this packet repeater system 1c can use monitoring device 31 monitoring terminal sets to send.
In this packet repeater system 1c, carry out at terminal installation 80a under the situation of call setting of real time communication, the call setup request that terminal installation 80a at first will comprise the information of target of the communication of wishing and the information of the COS of communicating by letter etc. sends in the call control apparatus 22.
If call control apparatus 22 receives the call setup request that sends from terminal installation 80a, the call setup request that then will comprise the information of call source terminal installation 80a and the information of the COS of communicating by letter etc. sends among the terminal installation 80b of target, and whether inquiry target terminal apparatus 80b can communicate by letter.
If target terminal apparatus 80b receipt of call from call control apparatus 22 is provided with request, then check the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., can communicate by letter if be defined as, will represent that then but the communication notifications that can communicate by letter returns to call control apparatus 22, and, begin real time communication from terminal installation 80b to terminal installation 80a by RTP real-time communication protocols such as (Real-time Transport Protocol).
If but call control apparatus 22 receives communication notifications from target terminal apparatus 80b, definite calling is set up, identifying informations such as identification number are distributed to the calling that has been provided with, and store together with relevant identifying information with the information of call source terminal installation 80a and target terminal apparatus 80b and the information of the COS of communicating by letter etc., but the communication notifications that will comprise the address information of target terminal apparatus 80b is transmitted to call source terminal installation 80a.
,, begin real time communication from terminal installation 80a to terminal installation 80b then by real-time communication protocols such as RTP if but terminal installation 80a receives communication notifications.
The calling of She Zhiing is by call control apparatus 22 management like this, can according to input unit 91 that call control apparatus 22 is connected in the indication of input, on display unit, show a row calling and a calling relevant, can monitor by the input indication the calling of such demonstration with the terminal installation of hope.
If with the above-mentioned the same indication that in call control apparatus 22, receives the monitoring designated call, then call control apparatus 22 monitoring of address information that will comprise terminal installation 80a, the 80b of mutual communication under this calling is transmitted and to be begun indication, when sending to packet transfer device, packet 14a, the 14d that regulates terminal installation 80a, 80b, the monitoring that is provided with the address information of terminal installation 80a, 80b and monitoring type information etc. is begun indication send in the monitoring device 31.
Begin indication if packet transfer device, packet 14a, 14d reception monitoring is transmitted, then find in the address information of the terminal installation that from the monitoring forwarding begins to indicate, is provided with, regulate the address of terminal installation and the address of target terminal apparatus; The information that the storage monitoring is provided with in transmitting and beginning to indicate, thus this information is searchable the storage according to the address information of regulating terminal installation; Reception is from regulating the packet that terminal installation sends to target terminal apparatus; And the destination address of this packet is rewritten as the address of monitoring device 31, and transmits.
Begin indication if monitoring device 31 receives monitoring, then the address information according to terminal installation 80a, 80b can be stored as the information of monitoring in beginning to indicate that is arranged on with retrieving.
Figure 31 is the flow chart of the observation process carried out of the packet repeater system 60 of expression second execution mode.
If monitoring device 31 receives packet, then as shown in figure 31, transmission source address with reference to the packet that receives, from transmission source address, read monitoring type and real target address information (address information of terminal installation 80b) (step S131), after monitoring processing (step S132) according to the monitoring type, the destination address of the packet that receives is rewritten as the address (step S133) of terminal installation 80b, and the packet that will rewrite the address sends to (step S134) in the next packet transfer device, packet.This packet is forwarded in the packet repeater system and incoming terminal device 80b.
Packet from terminal installation 80b to terminal installation 80a is transmitted too, the destination address of the packet that terminal installation 80b is sent out by packet transfer device, packet 14d is rewritten as the address of monitoring device 31, monitoring device 31 is after monitoring, the destination address of packet is rewritten as real destination address, thereby this packet is forwarded in the packet repeater system and incoming terminal device 80a.
Like this, the communication between terminal installation 80a, the 80b becomes the communication by monitoring device 31 under the situation that the user of terminal installation 80a, 80b does not know, and the communication between monitoring terminal set 80a, the 80b.
Then, finish indication if receive monitoring at call control apparatus 22, perhaps at sign off and from terminal installation 80a, when 80b has sent out the cutting off calling request, then call control apparatus 22 will comprise terminal installation 80a, the monitoring of the address information of 80b is transmitted and is finished indication, send to and regulate terminal installation 80a, the packet transfer device, packet 14a of 80b, among the 14d, and will comprise terminal installation 80a, the monitoring of the address information of 80b finishes indication and sends in the monitoring device 31, and deletes stored calls identifying information and terminal device information and communication service information etc.
If packet transfer device, packet 14a, 14d receive monitoring and transmit and finish indication, the terminal installation 80a during then the deletion forwarding that is arranged on monitoring begins to indicate, the stored information of 80b.
Monitoring device 31 receives monitoring and finishes indication, and deletion be arranged on monitoring in beginning to indicate terminal installation 80a and the information of 80b.
Like this, in the present embodiment, and in the packet transfer device, packet that termination device in communication is regulated for monitored calling, because will be for monitored calling and the destination address of the packet that receives in the packet transfer device, packet that termination device in communication is regulated, be rewritten as the address of monitoring device 31, and monitoring device 31 is rewritten as real destination address with the destination address of the packet that receives and transmits, so the communication of Hu Jiaoing arbitrarily can be via monitoring device 31, and the marginal date packet forwarding apparatus with monitoring function need be provided, can cut down equipment cost thus.
In addition,, just can finish, can reduce use cost so need not to be undertaken the collection of monitoring result by a plurality of packet transfer device, packets because monitoring is just carried out in place of monitoring device.
In addition, because packet transfer device, packet has been rewritten the address, so can begin monitoring under the arbitrary timing in communication.
In addition, in the present embodiment, though specified the calling that becomes monitoring objective in the calling in communication, but, for can the designated terminal device as monitoring objective, under the state that does not have the calling in the communication, preferably identical with first execution mode, the forwarding that will monitor in call setting begins to indicate and sends in the corresponding packet transfer device, packet and carry out the monitoring of terminal installation.
The modification of＜the second execution mode 〉
Figure 32 is the allocation plan according to the modification video data packet forwarding apparatus of second execution mode.Shown in figure 32, the packet transfer device, packet 15a in this modification possesses: make the packet forwarding 151a of portion that transmits packet between terminal installation with priority level separately; The packet that will copy to by the packet of particular port in the another port duplicates the 152a of portion.
In dependency structure, considered that also a kind of packet transfer device, packet 15a will copy to by the packet of particular port in other ports, and the method for monitoring of connected monitoring device selection.
＜adopted the 3rd execution mode of the present invention of single special-purpose monitoring device 〉
Figure 33 is the diagrammatic sketch according to the configured in one piece of the 3rd execution mode of the video data packet forwarding system of the present invention that has adopted single special-purpose monitoring device.
The packet repeater system of present embodiment is characterised in that, it is by MPLS (multiprotocol label conversion: Multi Protocol Label Switching) transmit packet, and between each terminal installation, set in advance LSP (tag transform path: Label Switch Path) in advance via monitoring device, if indication monitoring, then will offer the label of the MPLS of the packet that becomes monitoring objective, and make it can be via monitoring device via the label of the LSP of monitoring device.
In Figure 33, the packet transfer device, packet 1d of present embodiment possesses: carry out a plurality of packet transfer device, packet 16a～16d that packet is transmitted; Call control apparatus 23, its control respectively with terminal installation 80a, 80d that packet transfer device, packet 16a, 16d are connected between the calling of audio communication etc.; Monitoring device 32, the packet that its monitoring receives also is forwarded in the destination address of appointment.
In packet transfer device, packet 16a～16d, the packet transfer device, packet 16a, the 16d that have connected terminal installation 80a, 80b respectively are called the edge retransmission unit especially.
Packet transfer device, packet 16a (16d) possesses: the packet forwarding 161a of portion (161d), transmit packet with priority level separately between terminal installation; The label rewriting 162a of portion (162d), its label to the multiprotocol label conversion (MPLS:Multi Protocol Label Switching) of the packet of forwarding is rewritten.
In this packet repeater system 1d, carry out at terminal installation 80a under the situation of call setting of real time communication, the call setup request that will comprise the information of the destination address that communicates with and the information of the COS of communicating by letter etc. sends in the call control apparatus 23.
If call control apparatus 23 receives the call setup request that sends from terminal installation 80a, the call setup request that then will comprise the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., send among the target terminal apparatus 80b, and whether definite target terminal apparatus 80b can communicate by letter.
If target terminal apparatus 80b receipt of call from call control apparatus 23 is provided with request, then check the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., can communicate by letter if be defined as, will represent that then but the communication notifications that can communicate by letter returns to call control apparatus 23, and beginning is to the real time communication of terminal installation 80a.
If but call control apparatus 23 receives communication notifications from target terminal apparatus 80b, determine that then calling is provided with, identifying informations such as identification number are distributed to the calling that has been provided with, and the information of call source terminal installation 80a and target terminal apparatus 80b and the information of the COS of communicating by letter etc. are stored together with relevant identifying information, but the communication notifications that will comprise the address information of target terminal apparatus 80b sends to call source terminal installation 80a.
, then begin real time communication to terminal installation 80b if but terminal installation 80a receives communication notifications.
Like this, the calling that has been set up is by call control apparatus 23 management, can according to input unit 91 that call control apparatus 23 is connected in the indication of input, on display unit, show a row calling and a calling of communicating by letter, can monitor the calling of such demonstration with the terminal installation of wishing.
In addition, be provided with and transmit route (LSP) via the bi-directional data bag of monitoring device 32 and transmit route as the packet between terminal installation 80a, the 80b, packet transfer device, packet 16a, the 16d that regulates terminal installation 80a, 80b stored LSP label via monitoring device for each target terminal apparatus.
As mentioned above, if when in call control apparatus 23, receiving the indication of monitoring designated call, then call control apparatus 23 will comprise for calling and the forwarding of the monitoring of the address information of terminal installation 80a, the 80b of mutual communication begins indication, send to the packet transfer device, packet 16a, the 16d that regulate terminal installation 80a, 80b respectively.
If packet transfer device, packet 16a, 16d receive monitoring and transmit and begin indication, then transmit in the address information of the terminal installation that comprises beginning to indicate from monitoring, find out the address of terminal installation of adjusting and the address of target terminal apparatus; And be arranged on monitoring according to the searchable storage of address information of regulating terminal installation and transmit information in beginning to indicate; Reception is from regulating the packet that terminal installation sends to target terminal apparatus; Be set to filling header label additional on this packet via monitoring device and corresponding LSP label, and transmit this packet with target terminal apparatus.
Figure 34 is the flow chart of the observation process carried out of the packet repeater system of expression the 3rd execution mode.
If monitoring device 32 receives packet, then monitoring processing (step S141) afterwards, filling header with reference to the packet that receives, select the output label (step S142) corresponding with the filling header of the packet that receives, and the label of the filling header that will receive is rewritten as the output label (step S143) of selection, and the packet of having rewritten label is sent to (step S144) in the next packet transfer device, packet.This packet identifies in packet repeater system 1d and is rewritten, and is forwarded and incoming terminal device 80b according to the predefined LSP of sign.
Like this, the communication between terminal installation 80a, the 80b the user of terminal installation 80a, 80b do not know during via monitoring device 32, and monitor by monitoring terminal set 80a, 80b.
Then, finish indication if in call control apparatus 23, received monitoring, perhaps sign off and sent out the cutting off calling request from terminal installation 80a, 80b, then call control apparatus 23 monitoring that will comprise the address information of terminal installation 80a, 80b transmit to finish indication and sends among packet transfer device, packet 16a, the 16d that regulates terminal installation 80a, 80b, and deletes stored calls identifying information, terminal device information and the information on services of communicating by letter etc.
If packet transfer device, packet 16a, 16d receive monitoring and transmit the indication that finishes, the terminal installation 80a during then the deletion forwarding that is arranged on monitoring begins to indicate, the stored information of 80b.
Like this, in the present embodiment, the LSP that transmits packet via monitoring device 32 is set between each terminal installation in advance, in the packet transfer device, packet that termination device in communication is regulated the LSP label is being set for the calling of monitoring, thereby is also transmitting via monitoring device 32 from each packet of the adjusting terminal installation that is used to call out.Because the packet that receives is monitored,, can cut down equipment cost thus so the communication of Hu Jiaoing arbitrarily can be via monitoring device 32, and need not to possess the marginal date packet forwarding apparatus of monitoring function in monitoring device.
In addition,, just can finish, can reduce use cost thus so need not to be undertaken the collection of monitoring result by a plurality of packet transfer device, packets because monitoring is carried out in place of monitoring device.
In addition, because the marginal date packet forwarding apparatus carries out the label map function, so can begin monitoring any time in communication.
In addition, in the present embodiment, though made the calling that becomes monitoring target from the calling middle finger of communication, but, for terminal installation being designated as monitoring target, under the state of the calling that does not have communication, also can be identical with first execution mode, in call setting, begin to indicate to the forwarding of packet transfer device, packet transmitting supervisory, thus monitoring terminal set.
In addition, in the present embodiment, though monitoring device 32 carries out identical monitoring to all packets that receive, but, identical with above-mentioned execution mode, also can when beginning to monitor, begin indication to monitoring device 32 transmitting supervisories from call control apparatus 23, and the LSP input label of the address of the terminal installation of notice monitoring, monitoring and monitoring type etc., and call out the change monitoring type that connects calling.
The modification of＜the three execution mode 〉
Figure 35 is the integrally-built diagrammatic sketch according to the modification of the 3rd execution mode of video data packet forwarding system of the present invention.In addition, because the structure of present embodiment and above-mentioned the 3rd execution mode are roughly the same, so, give same-sign to same structure, only characteristic is described.
In Figure 35, the packet repeater system 1e of this modification possesses: carry out a plurality of packet transfer device, packet 16a～16d that packet is transmitted; Call control apparatus 23, its control respectively with terminal installation 80a, 80b that packet transfer device, packet 16a, 16d are connected between the calling of audio communication etc.; The monitoring device 33 that the packet of having specified is monitored.
Different with the structure of Figure 33, in this structure, the transmission that monitoring device 33 does not communicate, but directly obtain packet the forwarding of the packet between packet transfer device, packet 16c and the packet transfer device, packet 16d route, and monitor.
In packet transfer device, packet 16a～16d, the packet transfer device, packet 16a, the 16d that have connected terminal installation 80a, 80b respectively are called as the marginal date packet forwarding apparatus.
In this packet repeater system 1e, be provided with at terminal installation 80a under the situation of calling of real time communication, will comprise the information of target of the communication of hope and the call setup request of the information such as service type information of communicating by letter and be forwarded in the call control apparatus 23.
If call control apparatus 23 receives the call setup request that sends from terminal installation 80a, the call setup request that then will comprise the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., send among the target terminal apparatus 80b, and whether definite target terminal apparatus 80b can communicate by letter.
If target terminal apparatus 80b receipt of call from call control apparatus 23 is provided with request, then check the information of call source terminal installation 80a and the information of the COS of communicating by letter etc., can communicate by letter if be defined as, will represent that then but the communication notifications that can communicate by letter returns to call control apparatus 23, and beginning is to the real time communication of terminal installation 80a.
If but call control apparatus 23 receives communication notifications from target terminal apparatus 80b, then call out and be provided with, identifying informations such as identification number are distributed to the calling that has been provided with, and the information of call source terminal installation 80a and target terminal apparatus 80b and the information on services of communicating by letter etc. are stored together with relevant identifying information, and notification call source terminal device 80a can communicate by letter.
, then begin real time communication to terminal installation 80a if but terminal installation 80a receives communication notifications.
Like this, the calling that has been set up is by call control apparatus 23 management, can according to input unit 91 that call control apparatus 23 is connected in the indication of input, show that on display unit calling of the terminal installation communication wished and row call out, can monitor the calling of such demonstration.
In addition, in order to communicate with monitoring target, the bi-directional data bag forwarding route (LSP) that will be used for monitored communication is set to via the packet transfer device, packet 16c between terminal installation 80a, the 80b., packet transfer device, packet 16a, the 16d that regulates terminal installation 80a, 80b stored LSP label via packet transfer device, packet for the terminal installation of each destination address.
As mentioned above, if in call control apparatus 23, receive the indication of monitoring designated call, then call control apparatus 23 will comprise for calling and the monitoring of the address information of terminal installation 80a, the 80b of mutual communication is transmitted and begun indication, send to the packet transfer device, packet 16a, the 16d that regulate terminal installation 80a, 80b.
Packet transfer device, packet 16a, forwarding begins indication if 16d receives monitoring, then in the address information of the terminal installation that from the monitoring forwarding begins to indicate, comprises, find out the address of adjusting terminal installation and the address of target terminal apparatus, and to searchable according to the address information of regulating terminal installation and be arranged on the information that monitoring transmits in beginning to indicate and store, reception is from regulating the packet that terminal installation sends to target terminal apparatus, be set to filling header label additional on this packet via monitoring device and corresponding LSP label, and transmit with target terminal apparatus.
Packet transfer device, packet 16c carries out the operation of normal data packet forwarding apparatus, and this packet is rewritten in the label in the packet repeater system, is forwarded to terminal installation 80b according to the LSP that sets in advance.
Figure 36 is the flow chart of the observation process carried out in the modification video data packet forwarding system according to the 3rd execution mode.
If monitoring device 33 directly obtains packet the forwarding of the packet between packet transfer device, packet 16c and the packet transfer device, packet 16d route, then monitor processing (step S151).
Like this, communication between terminal installation 80a, the 80b becomes communication by the path between packet transfer device, packet 16c and the packet transfer device, packet 16d during the user does not know terminal installation 80a, 80b's, and the communication of monitoring device 33 between can monitoring terminal set 80a, 80b.
Then, finish indication if in call control apparatus 23, receive monitoring, perhaps sent out the cutting off calling request at sign off and from terminal installation 80a, 80b, then call control apparatus 23 will comprise the monitoring forwarding end indication of the address information of terminal installation 80a, 80b, send among packet transfer device, packet 16a, the 16d that regulates terminal installation 80a, 80b, and delete stored calls identifying information, terminal device information and communication service information etc.
If packet transfer device, packet 16a, 16d receive monitoring and transmit the indication that finishes, then deletion is provided with the terminal installation 80a of the storage in the monitoring beginning indication information, the information of 80b.
Like this, in the present embodiment, set in advance the LSP that transmits packet via the path between packet transfer device, packet 16c and the packet transfer device, packet 16d, monitoring device 33 can be monitored the packet via the path between packet transfer device, packet 16c and the packet transfer device, packet 16d, in the packet transfer device, packet of regulating the terminal installation that communicates for the calling of monitoring, in the packet that under becoming the calling of regulating monitoring objective, receives in the termination device in communication: additional via the path between packet transfer device, packet 16c and the packet transfer device, packet 16d and transmit the LSP label of packet, because in monitoring device 33, packet is monitored, so the communication of calling out can be via the path between packet transfer device, packet 16c and the packet transfer device, packet 16d arbitrarily, and need not to provide monitoring function in each marginal date packet forwarding apparatus, can cut down equipment cost thus.
In addition,, just can finish, can reduce use cost thus so need not to be undertaken the collection of monitoring result by a plurality of packet transfer device, packets because monitoring is carried out in place of monitoring device.
In addition, other is provided with because the marginal date packet forwarding apparatus changes level, so can begin monitoring any time in communication.
In addition, in the present embodiment, though made the calling that becomes monitoring target from the calling middle finger of communication, but, for terminal installation being appointed as monitoring target, under the state of the calling that does not have communication, also can be identical with first execution mode, in call setting, transmit the monitoring forwarding and begin indication, thereby monitor to the packet transfer device, packet of regulating terminal installation.
In addition, in the present embodiment, though monitoring device 33 carries out identical monitoring to all packets that obtain, but, identical with above-mentioned execution mode, also can be when beginning to monitor from the notice of call control apparatus 23 to the LSP input label of the address of the terminal installation of monitoring device 33 transmitting supervisory objects and monitoring target and monitoring type etc., thereby call out the change monitoring type that connects calling.
The modification of＜monitoring device 〉
Figure 37 is the diagrammatic sketch of configuration of the modification of expression monitoring device.
As shown in figure 37, possess according to the monitoring device 30a of modification: test data bag monitoring portion 303, it transmits the test data bag that exchanges between terminal installation, and reads this content; Packet monitoring portion 301, it passes on the common packet that exchanges between the terminal installation, and reads this content; Packet rewriting portion 302, it rewrites the target and the transmission source of these packets.
As shown in figure 37, only the test data bag of level on probation is operated by accommodation function module (test data bag monitoring portion 303).In case the priority subject of awarding reason is in limited monitoring project.Thus, can cut down the data packet number that test data bag monitoring portion 303 should handle, and make that monitoring device 30a handles the quantity of calling increase.
And then, if considered that also a terminal installation is from beginning just to carry out abnormal operation at first, then in the processing of test data bag monitoring portion 303, in beginning transmission test packet, monitor all test data bags, but, can not only cut down monitoring time like this and also cut down monitoring project for confirming that operating normal monitoring project does not then monitor.Thus, can further reduce the processing load of test data bag monitoring portion 303, the manageable call number of monitoring device 30a is increased.
The decomposition texture example of＜monitoring device 〉
Though so far the structure of the monitoring device shown in the explanation as shown in figure 25, integral body possess the rewriting of carrying out the monitoring target packet packet rewriting portion, monitor the packet monitoring portion of processing.But, as shown in figure 38, also can consider the Monitoring Data bag is rewritten the structure of the monitoring device of unit 341, packet monitoring means 342 physical separation.In addition, in this case, the Monitoring Data bag is rewritten unit 341 and is had packet acquisition unit 3411, packet extraction unit 3412, packet rewriting portion 3413.Packet monitoring means 342 has test data bag monitoring portion 3421 and packet monitoring portion 3422.Packet monitoring means 342 is rewritten unit 341 indication monitoring target packets and the necessary information relevant with this packet to the Monitoring Data bag having received the monitoring target notice from call control apparatus when.
Figure 39 is that expression Monitoring Data bag is rewritten the flow chart of the process of carrying out the unit.
The Monitoring Data bag is rewritten unit 341 shown in the flow chart of Figure 39, transmission source address with reference to the packet that receives, from transmission source address, read out monitoring information necessary and real target address information (step S161), and from the packet that receives, extract and monitor information necessary (step S162), after the information that will extract is notified to packet monitoring means 342 (step S163), the destination address of the packet that receives is rewritten as the address (step S164) of target terminal apparatus, and the transmission source address of the packet that receives is rewritten as the address (step S165) of monitoring means, the packet of having rewritten the address is forwarded to (step S166) in the next packet transfer device, packet.
Figure 40 is the flow chart of the process of expression packet monitoring means execution.
Packet monitoring means 342 reads monitoring type (step S171) from the information of having notified about the monitoring target packet shown in the flow chart of Figure 40, and monitor processing (step S172) according to the monitoring type.
In this structure, because Monitoring Data bag rewriting unit 341 is notified to the information of packet monitoring means 342 and only limits to monitoring processing information necessary, so, the house-keeping that communication between can cutting device causes, also can make up neatly, produce monitoring device thereby be lowered into this locality by the disposal ability of corresponding each device.
The observation process of＜monitoring device 〉
Figure 41 A and 41B are the diagrammatic sketch of the observation process that is used for illustrating that monitoring device is carried out.
Here, the left side (Figure 41 A) has shown that only monitoring is according to the passive monitoring of the content of the main information of RTP transmission, monitoring device is also interfered the RTP packet energetically in addition, for example deliberately discarded RTP packet, and whether the monitoring receiving terminal is reported and is abandoned corresponding quality.The malicious operation of surveying receiving terminal for example has the quality of the no matter actual RTP packet that receives, and the error reporting high-quality.In Figure 41 A, these three kinds of situations of situation of loss of packets have been represented to have produced in the situation that does not have the lost data bag, between the situation, monitoring device and the receiving terminal that have produced loss of packets between transmission terminal and the monitoring device.Whichsoever, receiving terminal is reported normal reception result with the RTCP packet.
Receiving terminal receives packet M#1～M#3, and with RTCP#1, report has normally received M#1～M#3.Therefore, monitoring device can confirm that receiving terminal is normal.
In addition, in transmission terminal transmits data packets M#4～M#6, M#5 was just lost before arriving monitoring device.Therefore, monitoring device only sends to receiving terminal with M#4 and M#6, and receiving terminal has normally received M#4 and M#6 with the RTCP#2 report.Therefore, monitoring device can confirm that receiving terminal is normal.On the other hand, receiving terminal arrives in this report under the situation of monitoring device, because monitoring device does not transmit M#5, so monitoring device can determine that immediately receiver terminal device has sent error reporting with the normal M#4～M#6 that receives of RTCP#2 report.
In addition, in the transmission terminal transmission and then the M#7～M#9 monitoring device transmission, M#8 was just lost before arriving receiving terminal.In this case, receiving terminal has normally received M#7 and M#9 with the RTCP#3 report.Therefore, in this case, monitoring device infers that M#8 just loses before arriving receiving system.On the other hand, in this case, receiving terminal has received at monitoring device under the situation of this report with normal M#7 and the M#9 of receiving of RTCP#3 report, and monitoring device can not detect this error reporting that receiving terminal sends.In a word, though the receiving terminal error reporting the normal M#8 that received because monitoring device can not detect the loss of packets that it sends to receiving terminal, so, can not detect this error reporting.
In order to make monitoring device can detect the error reporting of above-mentioned the 3rd example, shown in Figure 41 B, monitoring device carries out the packet monitoring energetically, promptly, monitoring device is deliberately initiatively abandoned the RTP packet that receives from receiving terminal and is not sent to receiving terminal, at this moment, monitoring device can affirm whether receiving terminal returns error reporting, and just monitoring device can detect the error reporting of above-mentioned the 3rd example.In Figure 41 B, monitoring device is deliberately abandoned M#8 among the M#7～M#9 that receives from transmission terminal.If receiving terminal has normally received M#7 and M#9 with report among the RTCP#3, then monitoring device just can affirm receiving terminal report correctly.On the other hand, if receiving terminal has normally received M#7～M#9 with the RTCP#3 report, then monitoring device can detect the error reporting of receiving terminal.
Industrial use
Retry communication control method of the present invention and system and method are considered the traffic of priority data bag And transmit on probation grade packet, perhaps based on carrying out probability by avoiding between the terminal with asynchronous technology Conflict and transmit the packet of level on probation, if perhaps the communication quality of DBMS bag on probation is not enough immediately Stop the transmission of level on probation, thereby can improve whole maximum processing capability.
In addition, according to packet transfer device, packet of the present invention, according to separately package forward priority etc. Level is for example passed through from the first terminal device Forward-reques and level on probation or the priority of appointment, with packet Be forwarded to second terminal installation from first terminal device. The present invention sets in advance and does not abandon DBMS bag on probation Level on probation bandwidth capacity and do not abandon the priority bandwidth capacity of priority data bag, at the total data flow velocity Surpassed in the situation of level bandwidth capacity on probation, just abandoned if try out the packet of level, if The packet that is priority is then awarded the bandwidth capacity of reason to priority. Therefore the priority data bag is in case awarded Reason just can not abandoned, and its quality is guaranteed until data flow finishes.
In addition, the present invention be applicable to terminal leading award reason control, wherein terminal installation head based on what measure Make earlier the request with level the transmission of data bag on probation, to the quality results that should transmit make with priority or The person is again to try out the request of level the transmission of data bag. If the request with level the transmission of data bag on probation causes always When data rate had surpassed level bandwidth capacity on probation, the packet of this level on probation was not awarded reason but quilt Abandon, thereby guarantee the data flow of existing priority data bag.
And then even in the transmission request according to new packet, the total data flow velocity has surpassed level band on probation In the situation of tolerance, then received because if it is the packet of priority, so even at circuit Such request also can be received in the situation of conversion and transfer. So, in case awarded the priority of reason Even packet in the situation of circuit conversion and transfer, do not abandoned yet, and its quality is in these data Stream is guaranteed before finishing always.
For example, for the circuit bandwidth 100Mbps of reality, be set to if try out a grade bandwidth capacity 40Mbps, then under the state that has surpassed 40Mbps, the packet of level on probation is not forwarded, so usually Keep 40Mbps or following data flow. And even produce circuit conversion, the packet of priority is not Be confined to the bandwidth of 40Mbps, and continue communication with preferential quality. And, until under the total data flow velocity Be reduced to before the 40Mbps, on probation grade packet new data flow be not set. In case under be reduced to 40Mbps then receives the data flow of new DBMS bag on probation and transmits DBMS bag on probation, and the result is can Automatically to stablize the data rate of packet.
In addition, even can provide in a kind of situation that occurs transferring, also can not abandon the number of priority In the situation that need not repeat to guarantee for the necessary bandwidth of priority data bag, continue communication according to bag. Cause This steadily realizes the transfer between the base station.
And then in the situation of adaptive-bandwidth, even because bandwidth changes, the total data flow velocity surpasses on probation The level bandwidth capacity is because the data flow of priority data bag is not limited to level bandwidth capacity on probation, so one Dawn set up data flow then the data flow of priority data bag be guaranteed. And can shorten priority number thus Measuring Time according to bag.
In addition, as above explanation, the present invention is provided to packet transfer device, packet by call control apparatus and comprises table Show the monitoring indication of the identifier of priority level translative mode. Afterwards, packet transfer device, packet is based on this Label symbol, on one side prediction from the priority level of the packet of the terminal installation transmission that is used to specify calling Conversion, according to prediction monitor on one side. Even so control in the leading reason of awarding based on measuring of terminal In, also need not the priority level monitoring that miscellaneous processing just can be carried out packet.
In addition, if abandoned violating the packet of contract, can hinder the packet of breach of contract Flow into, and keep the service quality that meets treaty content.
In addition, make it meet contract if rewrite the COS of the packet of the contract of having violated, then can Transmit the packet of breach of contract as the packet that meets contract, the result can keep to meet in the contract The service quality of holding.
Wherein, the present invention determines whether the COS of request when calling is set meets contract, if disobey Anti-contract, just refusal is set up and is called out. Then can before the forwarding data bag, just refuse exhaling of breach of contract Cry, thereby keep the service quality that meets treaty content.
And then, for the data rate of packet, be not only the upper limit, also can be by one for lower limit Monitoring section concentrates and monitors, thereby reduces monitoring cost.
In addition, as above explanation is if adopt the present invention, because be defined as monitoring when calling out setting The packet of the calling of object is forwarded via monitoring device, so can concentrate monitoring in monitoring device Packet, and packet transfer device, packet need not monitoring function, at the equipment of having cut down packet transfer device, packet In the time of cost, can also cut down the management cost of package forward system.
When calling out setting, the address of monitoring device is given as the address notification of target terminal apparatus With call out relevant terminal installation, and the destination address by rewriting each packet at monitoring device and Send source address, and be made to the directs data packets of calling of the monitoring of monitoring device. This technology can with Therefore the relevant package forward of the calling of monitoring and can be concentrated at monitoring device and hold in monitoring device Be about to monitor operation.
Adopt the present invention, if designated as calling, terminal or the user of monitoring target, then will with This calling, terminal or user-dependent packet are transmitted via the packet of monitoring device. Also Be the packet that monitoring device concentrates monitoring to monitor, and packet transfer device, packet need not to have monitoring function. The result when can cut down the equipment cost of packet transfer device, packet, also cuts down the package forward system Management cost.
At this moment, in the packet transfer device, packet of the terminal installation of regulating the packet that exchanges monitoring, data Packet forwarding apparatus will be rewritten as the destination address of monitoring target packet the address of monitoring device. Then Because monitoring device is rewritten as real destination address with the destination address of the packet that receives and has carried out Send, so, the road can be pressed via monitoring device with calling, terminal or user-dependent packet By transmission, this monitoring device can be concentrated the monitored data bag.
In addition, thus the LSP that the present invention has preset between each terminal installation transmits via monitoring device Packet. In the packet transfer device, packet of the terminal installation of regulating the packet that exchanges monitoring, because Add the LSP label in each packet as monitoring target, thereby pressed specified circuit via monitoring device Footpath forwarding data bag. So the present invention can make with calling, terminal or user-dependent packet via Monitoring device is transmitted, and this monitoring device can be concentrated the monitored data bag.
In addition, in call control apparatus, as mentioned above, can select with exhale relevant with particular terminal Cry for object based on the monitoring of terminal, only take specific calling as monitoring target based on the monitoring of calling out, The monitoring based on the user take the calling relevant with the specific user as object. This configuration can detect because Particular terminal and the abnormal operation that causes and the abnormal operation that causes owing to the specific user.
And then, in call control apparatus, can adopt such as logic selection, optional, based on it Before the result that monitors selection, based on the selection that is included in the communication attributes in the call control signals or Based on the selection that is included in the information of calling out the route device in the signalization. This is so that for example, based on frequently The detection of the abnormal operation of rate becomes possibility to the bigger big bandwidth of specific monitoring of communication network impact Communication becomes possibility and so that gets rid of and to comprise and can realize terminal and can realize specific prison outside the home gateway Survey can not realize that communication becomes possibility.
In addition, according to foregoing, the detection of the abnormal operation at the non-intermittence that the present invention can continue, Be controlled at minimum packet monitoring in the influence degree to communication network, have original text probability abnormal operation The specific monitoring monitoring of communication, the result has effectively utilized monitoring device.

Claims (14)

1. one kind is used for packet transfer device, packet (packet of 11a～11i) is transmitted possibility and determined method, (11a～11i) the data-driven bag is transmitted priority level to this packet transfer device, packet, for example by the level on probation or the priority of the forwarding request appointment of first terminal installation, transmit packet to second terminal installation from first terminal installation (for example 50a), this packet is transmitted possibility and is determined that method is characterised in that, comprising:
The default level bandwidth capacity (BWmh) on probation of not abandoning level packet on probation; And
Packet total data flow velocity in level on probation and priority surpasses under the situation of above-mentioned level bandwidth on probation (BWmh), abandons the packet of level on probation.
2. packet according to claim 1 is transmitted possibility and is determined method, it is characterized in that, owing to there is a new packet transmission requests, packet total data flow velocity surpasses under the situation of level bandwidth capacity on probation (BWmh), when this new packet is level packet on probation, abandon this new packet, and when being the priority data bag, this new data packets is passed through.
3. packet according to claim 2 is transmitted possibility and is determined method, it is characterized in that:
The default priority bandwidth capacity (BWh) of not abandoning the priority data bag; And
In the packet transmission requests owing to new priority, packet total data flow velocity surpasses under the situation of above-mentioned priority bandwidth capacity (BWh), abandons the packet of this new priority.
4. packet according to claim 1 is transmitted possibility and is determined method, it is characterized in that, above-mentioned packet is forwarded based on the variable data flow of communication bandwidth, enlarging under the situation that makes the total data flow velocity surpass above-mentioned level bandwidth capacity on probation (BWmh) owing to communication bandwidth, abandoning above-mentioned level packet on probation.
5. packet according to claim 4 is transmitted possibility and is determined method, it is characterized in that,
The default priority bandwidth capacity (BWh) of not abandoning the priority data bag; And
Surpassing under the situation of above-mentioned priority bandwidth capacity (BWh), abandon above-mentioned priority data bag owing to communication bandwidth expansion makes packet total data flow velocity.
6. transmit possibility according to any one described packet in the claim 1～5 and determine method, it is characterized in that, above-mentioned terminal installation (for example 50a) is made the request of transmission level on probation packet, and, make transmission priority or the request of transmission level on probation packet once more according to the transmission quality result.
7. a packet transfer device, packet (11a～11i), it is used for the data-driven bag and transmits priority level, for example by the level on probation or the priority of the forwarding request appointment of first terminal installation, packet is forwarded to second terminal installation from first terminal installation (50a), this packet transfer device, packet (11a～11i) be characterised in that possesses:
The storage part (1112) of the level bandwidth capacity on probation (BWmh) of not abandoning level packet on probation prestores; And
Total data flow velocity at level on probation and priority data bag surpasses under the situation of above-mentioned level bandwidth capacity on probation (BWmh), abandons the data rate monitoring portion (1112) of the packet of level on probation.
8. packet transfer device, packet according to claim 7, it is characterized in that, above-mentioned data rate monitoring portion (1112) is surpassing under the situation of above-mentioned level bandwidth capacity on probation (BWmh) owing to new transmission request makes above-mentioned total data flow velocity, when this new packet is level packet on probation, abandon this new packet, and when being the priority data bag, this new data packets is passed through.
9. packet transfer device, packet according to claim 8 is characterized in that,
The priority bandwidth capacity (BWh) that above-mentioned storage part (1112) has also prestored and do not abandoned the priority data bag; And
Above-mentioned data rate monitoring portion (1112) abandons the packet of this new priority in that above-mentioned total data flow velocity is surpassed under the situation of above-mentioned priority bandwidth capacity (BWh).
10. packet transfer device, packet according to claim 7, it is characterized in that, transmit packet with the data flow that communication bandwidth is variable, and above-mentioned data rate monitoring portion (1112) abandons above-mentioned level packet on probation owing to communication bandwidth expansion makes under the situation of above-mentioned total data flow velocity above above-mentioned level bandwidth capacity on probation (BWmh).
11. packet transfer device, packet according to claim 10 is characterized in that,
The priority bandwidth capacity (BWh) that storage part 1112 also prestores and do not abandon the priority data bag; And
Above-mentioned data rate monitoring portion (1112) abandons the packet of this priority surpassing under the situation of above-mentioned priority bandwidth capacity (BWh) owing to communication bandwidth expansion makes the total data flow velocity.
12. packet transfer device, packet according to claim 7 is characterized in that, comprising:
Can distinguish a forwarding priority and a level packet on probation, and many circuit (A, B) of monitoring by above-mentioned data rate monitoring portion (1112),
Wherein, if break down at least one circuit, thereby all the packet data streams in faulty circuit are switched to second circuit at least, if and the total data flow velocity of level on probation in the second circuit and priority data bag surpassed under the situation of level bandwidth capacity on probation (BWmh), data rate monitoring portion (1112) abandons above-mentioned on probation grade of packet.
13. packet transfer device, packet according to claim 7, it is characterized in that, above-mentioned terminal installation is a mobile terminal apparatus (60b) of transmitting packet with radio, if and owing to the mobile caused transfer of this mobile terminal apparatus surpasses under the situation of level bandwidth capacity on probation (BWmh) the total data flow velocity of level on probation and priority data bag, data rate monitoring portion (1112) abandons above-mentioned level packet on probation.
14. one kind is implemented in the packet transfer device, packet (method among the 11a～11i), this packet transfer device, packet (11a～11i) be used for the data-driven bag to transmit priority level, for example by the level on probation or the priority of the forwarding request appointment of first terminal installation, transmit packet to second terminal installation from first terminal installation (for example 50a), the method is characterized in that, its be used to make above-mentioned packet transfer device, packet (11a～11i) carries out following steps:
The default step of not abandoning the level bandwidth capacity on probation (BWmh) of level packet on probation; And
Total data flow velocity at level on probation and priority data bag surpasses under the situation of (S42) above-mentioned level bandwidth capacity on probation, abandons the step of (S44) level on probation packet.
CN2008101452462A 2002-07-30 2003-07-30 Packet transfer device, implementation method and possibility determination method Expired - Fee Related CN101350785B (en)

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JP2003175485A JP3786934B2 (en) 2003-06-19 2003-06-19 Packet transfer system, packet monitoring method, call control device, and packet transfer device
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JP2003176547A JP3833632B2 (en) 2003-06-20 2003-06-20 Packet transfer availability determination method, packet transfer apparatus, and program
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