CN1863161A - Method for processing service - Google Patents

Method for processing service Download PDF

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Publication number
CN1863161A
CN1863161A CNA2005101241773A CN200510124177A CN1863161A CN 1863161 A CN1863161 A CN 1863161A CN A2005101241773 A CNA2005101241773 A CN A2005101241773A CN 200510124177 A CN200510124177 A CN 200510124177A CN 1863161 A CN1863161 A CN 1863161A
Authority
CN
China
Prior art keywords
service
processing method
flow
management server
traffic processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2005101241773A
Other languages
Chinese (zh)
Other versions
CN100466613C (en
Inventor
徐锐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CNB2005101241773A priority Critical patent/CN100466613C/en
Publication of CN1863161A publication Critical patent/CN1863161A/en
Application granted granted Critical
Publication of CN100466613C publication Critical patent/CN100466613C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
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    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
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Abstract

The invention provides a service processing method by multiflow mapping technique, for processing service request of source user to object user, comprising: according to service request of source user, issuing multiflow mapping information of the service to the routers corresponding to the source and object users by resources management server, respectively; and the routers complete flow mapping installation according to the multiflow mapping information, open and execute policy switches and make message classification, QoS action and bandwidth preservation for flows; and the routers make united management and computation on multiple flows of the service.

Description

Service processing method
Technical Field
The present invention relates to a service processing method, and in particular, to a method for processing an IPTN service according to a multi-stream mapping technique.
Background
Current network technology advances have made it possible to carry voice over packet networks, and the rich traffic demands that require rapid push-out have prompted the emergence of a soft switch (SoftSwitch) architecture. Meanwhile, Next Generation Networks (NGNs), which mark the arrival of the new generation telecommunication network age, are open, IP-based networks in which the functions of conventional telecommunication switching equipment are separated to form individual components that are developed independently and are coordinated with each other through standard protocols. After the IP network is commercialized, the basic platform for telecommunication service has the following problems:
1. QoS (quality of service) issues: ISP (internet service provider)/ICP (internet content provider) does not have the ability to guarantee quality of service to users, and cannot charge users a sufficient fee; and the IP network can not meet the needs of the private line users temporarily, it is difficult to deploy real-time services, and the convergence of the three networks (cable television network, mobile communication network and internet) is also difficult to implement.
2. Safety problems are as follows: the ubiquitous hacker makes the business under attack from time to time, etc., which will result in the inability to enhance the user experience, especially making enterprise users seriously worried about.
3. Management problems: the traditional IP network does not define and design a management and maintenance system for the public environment, so that when a network fails, the failure cannot be located or is not located quickly enough.
4. Value chain problems: the "free" model of traditional IP networks has led to "network foam economies" that have a critical need to establish benign operational models that form a benign value chain for users, ISPs, ICPs, etc.
On the basis, in order to solve the problems of QoS, security, management and the like of the IP network, a concept and a framework of an IP telecommunication network (IPTN) are proposed, and the existing IP network is modified. The IP telecommunications network can carry both traditional PSTN (public switched telephone network) traffic and data private line traffic while supporting new IP services at the carrier level quality of service (QoS).
Figure 1 shows an overall block diagram of an IPTN.
As shown in fig. 1, the IPTN mainly comprises: service control layer, bearing control layer, logic bearing network and basic physical network. Wherein,
the CA, which is a call agent, is located at the traffic control layer, which performs various traffic controls, and may be a softswitch, a video on demand Server (VOD Server), a virtual private network manager (vpn manager), etc.
The load control layer is provided with an RM (resource management server) which has the functions of: managing resources of the logical bearer network; the method comprises the steps of receiving a resource request from a service control layer, determining whether to accept a call, designating a service flow path, and controlling an Edge Router (ER) to finish service sensing, thereby achieving the effects of applying for resources before use, ensuring resources in use and releasing resources after use of the carrier-class service.
The logic bearing network is provided with an Edge Router (ER) and a convergence router (BR), wherein the ER receives a QoS control command issued by an RM in a bearing control layer to complete the works such as flow classification, label stack push-in and the like. The BR and the ER form an MPLS (multiprotocol label switching) network together, and a plurality of LSPs (label switching paths) are connected into an IPTN path through a label stack, so that various service flows can reach a destination under the condition of ensuring certain QoS.
Among them, a plurality of MA management areas (domains) correspond to a plurality of resource managers RM, respectively (for example, MA1 corresponds to RM1, MA2 corresponds to RM2, and the like).
According to the general framework of IPTN shown in fig. 1, a user can make a service request through a call, and establish a call with a target user via CA, RM, ER.
However, in NGN carrier class IP telephony applications, operators have different requirements for QoS of audio and video data streams, such as the video stream requiring a larger bandwidth than the audio stream, and for the data delay, the audio stream requirement is higher than the video stream. However, in the prior art, the video stream and the audio stream are sent as the same service by the RM and forwarded in the same LSP path, so that the two streams (the video stream and the audio stream) may affect each other, for example, the bandwidth of the video stream may occupy the bandwidth of the audio stream, which may cause the degradation of the call quality.
Due to the above disadvantages, operators hope to issue streaming rules for voice and video separately in a one-time call service of IPTN videophone service, so as to perform QoS scheduling and bandwidth reservation separately, and even better enable an audio stream and a video stream (or a language stream of multiple languages) to travel different physical links separately.
However, in the prior art, only one rule is available for issuing an IPTN service by an RM each time, and the rule corresponds to one action. To meet the above requirements of the operator, two services must be delivered for one call, however, for the RM, since two services for one call are independent from each other, if traffic statistics is performed separately, it increases the difficulty of charging; moreover, if the link on which one of the services is located fails and the other service is not perceivable, a situation may occur in which the user sees only a picture without sound or only sound without picture while making a video call, which is obviously not acceptable to the user. But if at the level of the RM resource manager, the two services for one call are managed uniformly, which again increases the difficulty of deployment and management.
Therefore, it is necessary to design a new flow mapping technology, so that multiple flows exist independently in the same service, and the flow can be uniformly measured and managed.
Disclosure of Invention
It is an object of the present invention to provide a method of processing traffic according to a multiple stream mapping technique.
According to an object of the present invention, the present invention provides a service processing method for processing a service request from a source user to a target user, comprising: according to the service request of the source user, the resource management server respectively issues a plurality of stream mapping messages of the service to the routers corresponding to the source user and the target user; the routers corresponding to the source user and the target user complete flow mapping installation according to the flow mapping messages, open and execute a strategy switch, and perform message classification, QoS action and bandwidth reservation aiming at the flow; and the routers corresponding to the source user and the target user perform unified management and metering on the multiple flows of the service.
According to the service processing method provided by the invention, each flow of the service has different rules and corresponds to different QoS indexes and label switching paths.
According to the service processing method provided by the invention, the resource management server judges whether to accept the service request of the source user according to the link topology and the resource information.
According to the service processing method provided by the invention, when the router performs flow mapping installation, if one flow of the service fails to be installed, all flows of the service cannot be installed.
According to the service processing method provided by the invention, in the service process, each flow of the service uses the same physical link or different physical links.
According to the service processing method provided by the invention, in the service process, when a physical link corresponding to one flow of the service has a problem, the router reports the problem to the resource management server, and all flows of the service to which the flow belongs are deleted under the instruction of the resource management server.
According to the service processing method provided by the invention, a plurality of streams belonging to the same service are split at the source user side.
According to the service processing method provided by the invention, a plurality of streams belonging to the same service are split at the resource management server side.
According to the service processing method provided by the invention, the resource management server simultaneously issues a plurality of stream mappings belonging to one service in one call.
According to the service processing method provided by the invention, the resource management server issues a plurality of stream mappings belonging to one service for a plurality of times in one call.
The invention has the beneficial effects that: the invention can use a plurality of rules in one IPTN service and execute different actions, thereby respectively reserving respective bandwidths for voice and video in one call, ensuring different QoS indexes, and a plurality of streams independently exist under the same IPTN service. In addition, the invention can realize unified metering and unified management aiming at the flow.
Drawings
Figure 1 shows an overall framework diagram of an IPTN;
figure 2 shows the process flow of an IPTN service according to the invention.
Detailed Description
Figure 2 shows the process flow of an IPTN service according to the invention. The IPTN service call system includes an NGN service unit 100 (call agent 100), a plurality of resource management servers (RM1, RM2, RM3), an MA1 corresponding to RM1 (management area 1), an MA2 corresponding to RM2 (management area 2), an MA3 corresponding to RM3 (management area 3), ERs and BRs in the respective MAs, and user terminals A and B. The IP address of the user terminal a belongs to the management area 1, and the IP address of the user terminal B belongs to the management area 3.
As shown in fig. 2, the call establishment process of the IPTN service of the present invention is specifically as follows:
step 1: the user terminal a initiates a call, triggering a service request.
Step 2: the NGN service unit 100 analyzes the service request from the user terminal a, obtains the IP addresses (the addresses of the user terminal a and the target call user terminal B) of both parties of the call and the TCP/UDP port numbers, and applies for resources from the RM1 according to the QoS index required by the audio and video data streams in the service request.
And step 3: RM1 collects link topology and resource information, calculates locally managed resource conditions separately, and only if each resource request (e.g., QoS audio and video data stream respective request) is satisfied, the call will be admitted; if RM1 finds that the resources are not enough to establish the connection or that one of the requested resources is not satisfied, then RM1 returns a call failure to NGN service unit 100; if every resource request of the call of the user terminal a can be admitted, the call connection continues to be established.
And 4, step 4: RM1 routes according to the IP addresses of both parties after admitting the call of user terminal A, and sends the route result to RM2 of the next domain (corresponding to MA2) according to the preset route selection strategy, RM2 determines whether to admit or reject the call of user terminal A according to the resource usage after receiving the request, if it accepts, then sends the resource request to RM3 of the next domain (corresponding to MA3) again according to the route selection result,
if RM3 also receives the resource request, the call of user terminal a is admitted since the destination IP address (address of target calling user terminal B) in the resource request information received by RM3 belongs to the home domain.
And 5: in case of admitted call of user terminal a, RM3 issues multiple stream mapping requests to ER corresponding to destination IP address (address of target call user terminal B) through COPS (general open policy service) protocol, where RM3 issues requests for multiple data streams (audio stream, video stream, etc.) in the same traffic, each stream having different rules (e.g. audio stream may use 2001 port number of UDP and video stream may use 2002 port number of UDP), and each corresponding to different QoS index and LSP path.
Step 6: after receiving the flow mapping request message sent by RM3, the ER corresponding to the target call user terminal B parses the information of each flow from the flow mapping request message, and installs the information in the local area, if one of the flows fails to map and install, the whole service including multiple flows will not be installed, and the ER reports the failure of flow mapping and installation to RM 3; if all stream mappings in the same service are successfully installed, the ER reports a response message of successful stream mapping installation to the RM 3;
after mapping a plurality of flows, the ER opens and executes a policy switch, which is used for performing subsequent actions, that is, classifying the flows by messages, and giving corresponding QoS guarantee (performing QoS actions, such as marking priority marks, mirroring messages, redirecting messages, counting messages, allowing messages, filtering messages, and the like) and reserving bandwidth for the matched flows; if the strategy switch is not opened and executed, ER treats the message as a common stream for processing, and cannot perform subsequent actions without classifying the message. The ER then reports a QoS resource response message to RM3 to develop the user service, and the ER uniformly counts the traffic of multiple flows belonging to the same service.
And 7: after receiving the QoS resource response message reported by the ER in step 6, RM3 forwards the QoS resource response message to RM2 of the previous domain according to the source IP.
And 8: RM2, upon receiving the QoS resource response message forwarded in step 7, determines whether the source IP in the message belongs to the own domain, since in this embodiment the source IP belongs to the domain corresponding to RM1, RM2 forwards the QoS resource response message to RM1 of the previous domain.
And step 9: (ii) a Since LSP (label switched path) is a unidirectional path, if a call is to be established between end users a and B, LSP paths must be established in both directions, so RM needs to issue a flow mapping request containing service policies with the same content but opposite directions to ER corresponding to both source IP address and destination IP address, and at this time RM1 issues multiple flow mapping requests of the same service to ER corresponding to source IP address (end user a).
Step 10: as in step 6, after the ER corresponding to the source IP address (end user a) completes the mapping of multiple flows, the policy switch is executed, the flows are classified into messages, corresponding QoS guarantees and bandwidth reservations are given to the matched flows, response information that the flow mapping is successfully installed is reported to RM1, so that user services are developed, and the ER uniformly counts the flows of multiple flows belonging to the same service.
Step 11: RM1 reports QoS resource response message to NGN service unit 100 after receiving response message of successful flow map installation, when the bidirectional path of call (path between user terminal a and target call user terminal B) is ready.
Step 12: after receiving the QoS resource response message reported in step 11, the NGN service unit 100 completes the connection establishment process, and then the ring of the target call user terminal B is sounded, and the user B can use the IPTN service provided by the present invention.
In the process of the service requested by the user terminal a, according to the resource situation and the routing result, multiple flows included in the requested service may use the same physical link or different physical links, if a problem occurs in a link corresponding to one of the flows, the ER reports a message of an LSP Down corresponding to the flow to the RM, and after searching the service corresponding to the LSP, the RM issues a flow mapping deletion command to the ER, so that the ER deletes all flows under the service corresponding to the flow.
For example, if a service includes an audio stream and a video stream, and a link corresponding to the audio stream has a problem (i.e., only an image has no sound at this time), the ER reports a message of an LSP Down corresponding to the stream to the RM, and the RM issues a stream mapping deletion command to the ER after searching the service corresponding to the LSP, so that the ER deletes all the audio streams and video streams included in the service. Therefore, the condition that only sound but not pictures occurs is avoided through unified management.
As described above, in the present invention, a plurality of stream installation commands mapped by streams are issued to the ER through the RM, so that different actions (e.g. different QoS actions for audio and video) can be performed using a plurality of rules (e.g. different rules for audio and video) in one IPTN service, thereby respectively reserving respective bandwidths for voice and video in one call and ensuring respective different QoS indicators.
It should be noted that the present embodiment only shows 3 RMs by way of example, and it should be understood that the present embodiment is also applicable to a multi-RM environment.
< modified example >
In the above embodiment, the splitting of the stream is completed at the user terminal a, and multiple streams of one service are simultaneously sent down in one call through the RM (splitting of the stream can be completed by the prior art).
The present invention is not limited to this, and the splitting of the flow can also be completed on the RM, so that the RM issues the flow mapping for many times in one call, and manages these multiple flows uniformly, and meters the flow uniformly to realize the different QoS requirements of the operators on different flows.
The specific process is the same as the above steps 1 to 12, except that the embodiment may repeat step 5 to issue stream mapping for multiple times.
In summary, in the application of the IPTN service, the operator has different QoS requirements for different flows. According to the purpose, the invention issues a plurality of stream installation commands mapped by streams to the ER through the RM, so that a plurality of rules can be used in one IPTN service to execute different actions, thereby respectively reserving respective bandwidths for voice and video in one call, ensuring respective different QoS indexes, and a plurality of streams independently exist under the same IPTN service. In addition, the invention can realize unified metering and unified management aiming at the flow.
Other advantages and modifications will readily occur to those skilled in the art, based upon the foregoing description. Therefore, the present invention is not limited to the above-described embodiments, and one aspect of the present invention is described in detail and exemplarily by way of example only. Those skilled in the art can substitute various equivalents for the above-described embodiments without departing from the spirit of the present invention, but such embodiments are to be construed as being included in the scope of the claims and their equivalents.

Claims (10)

1. A service processing method for processing a service request of a source user to a target user comprises the following steps:
according to the service request of the source user, the resource management server respectively issues a plurality of stream mapping messages of the service to the routers corresponding to the source user and the target user;
the routers corresponding to the source user and the target user complete flow mapping installation according to the flow mapping messages, open and execute a strategy switch, and perform message classification, QoS action and bandwidth reservation aiming at the flow; and
and the routers corresponding to the source user and the target user perform unified management and measurement on the multiple streams of the service.
2. The traffic processing method according to claim 1,
and the resource management server judges whether to accept the service request of the source user or not according to the link topology and the resource information.
3. The traffic processing method according to claim 1 or 2,
each flow of the service has different rules and corresponds to different QoS indexes and label switched paths.
4. The traffic processing method according to claim 3,
when the router performs flow mapping installation, if one of the flows of the service fails to be installed, all the flows of the service are not installed.
5. The traffic processing method according to claim 4, wherein,
in the process of the service, each flow of the service uses the same physical link or different physical links.
6. The traffic processing method according to claim 5, wherein,
in the process of the service, when a physical link corresponding to one flow of the service has a problem, the router reports the problem to the resource management server, and all flows of the service to which the flow belongs are deleted under the instruction of the resource management server.
7. The traffic processing method according to claim 6, wherein,
the splitting of multiple streams belonging to the same service is completed at the source user side.
8. The traffic processing method according to claim 6, wherein,
and completing splitting of a plurality of streams belonging to the same service at the resource management server side.
9. The traffic processing method according to claim 7 or 8,
the resource management server simultaneously issues a plurality of stream mappings belonging to one service in one call.
10. The traffic processing method according to claim 7 or 8,
the resource management server issues multiple stream mappings belonging to one service for multiple times in one call.
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WO2008080314A1 (en) * 2006-12-29 2008-07-10 Huawei Technologies Co., Ltd. A method, forwarding engine and communication device for message acces control
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CA2496446A1 (en) * 2002-09-06 2004-03-18 Matsushita Electric Industrial Co., Ltd. Methods for performing medium dedication in order to ensure the quality of service for delivering real-time data across wireless network
CN100391154C (en) * 2003-09-18 2008-05-28 华为技术有限公司 Selecting method of path in resource supervisor
CN100355249C (en) * 2003-09-08 2007-12-12 华为技术有限公司 A method for accomplishing resource request for bothway service in bearing network

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Publication number Priority date Publication date Assignee Title
WO2008080314A1 (en) * 2006-12-29 2008-07-10 Huawei Technologies Co., Ltd. A method, forwarding engine and communication device for message acces control
CN109787797A (en) * 2017-11-14 2019-05-21 华为技术有限公司 Fault detection method, device and the system of link
WO2019096001A1 (en) * 2017-11-14 2019-05-23 华为技术有限公司 Link fault detection method, device, and system
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