WO2006136069A1

WO2006136069A1 - A METHOD AND SYSTEM OF INTER-DOMAIN NEGOTIATION FOR END-TO-END QoS USING HYBRID-PATHS

Info

Publication number: WO2006136069A1
Application number: PCT/CN2005/002113
Authority: WO
Inventors: Zhihai Wang; Weibin Wang
Original assignee: Zte Corporation
Priority date: 2005-06-22
Filing date: 2005-12-07
Publication date: 2006-12-28
Also published as: CN100388714C; CN1885814A

Abstract

A method, system and device of inter-domain negotiation for end-to-end QoS, which carries out configuration for the net element that is connected directly with external network and being responsible for transmission data media to external network in the access network, and enables the net element to be with the function for QoS negotiation with external network resource controller, as resource negotiation initiating point (RNIP). After completing the configuration, when a service in the domain needs the guarantee of external trunk network resource, and external network manages this network resource in the manner of resource controller, RNIP acquires the information required for negotiation and selecting the addressing information of resource controller of external network, encapsulates it as the bearing resource request message which is identifiable for the resource controller, and transmits it to external network resource controller, and receives the response message from the resource controller. The present invention integrates the advantage of OFF-PATH mode and ON-PATH mode, in the meanwhile, the present invention is more easily compatible with ON-PATH mode for carrying out QoS guarantee of end-to-end.

Description

Inter-domain negotiation method and system for end-to-end quality of service using hybrid paths

The present invention relates to quality of service guarantee for third generation mobile communication systems, and more particularly to core end-to-end quality of service guarantee and inter-domain negotiation methods and systems. Background technique

The technology involved in the present invention is based on two technical foundations: 'intra-domain. and end-to-end QoS protection system between domains. QoS (Quality of Service) is a measure of the resources and demand of services such as bandwidth and delay. . . . .

· End-to-end QoS system in the domain: The domain here. omairi) includes GPRS'. (General Packet Radio Service) packet domain, or IP network such as GPRS as access network and IMS (IP media body flow) Subsystem) The network range in which the network and PSTN networks interact. The QoS assurance system completes the resource guarantee through policy decision and policy execution in such a domain to meet the quality and quantity requirements of the bandwidth and delay required by the service. .. ' ' -

'Please refer to Figure 1. Each domain includes IP Media Stream Subsystem (IMS) and IP Access Network. 'The domain includes the following modules related to QoS guarantee: · ' ' '

' ' AF: Application Function, application layer function, 'responsible for application: layer session negotiation and 'establishment.

PDF: Pol icy Decision Function, policy decision function, based on session type and contract information. In the present invention, the network element has a policy decision function.

· 'PEP: Policy Enforcement Point, 'Policy enforcement point, accepts the policy' information from the PDF', applies to the media data stream that the session is in order to achieve the retention of the resource and the required quality of service for the data stream. the goal of.

.SBLP :. Service based Local Policy, a business-based local policy. It is prepared by PDF and sent to PEP for execution. Contains QoS parameters, 'service related information, billing strategy and other information.

The other is the end-to-end quality of service guarantee system between domains: When a network is separated at both ends of a session. In two domains and there is no direct physical connection between the two domains, ': need to pass one or more. The bone 'dry network (relative to these two domains, also known as the external network) is connected.

In this case, how to apply the strategy to the middle backbone network to ensure the resources on the entire path. The source is the content to be studied by the system. Several different methods are provided in the prior art to complete the domain.

• Inter-policy negotiation, mainly including two types: OFF-PATH mode (offline mode) and 0N-PATH mode (online mode). ' ―

The network architecture in OFF-PATH mode is shown in Figure 1. The system consists of two domains connected by an external backbone 'IP network. The external network has resource controllers for resource management and allocation. The characteristics of this architecture are as follows: PDF and external network resource controllers are connected by establishing a Gu port to complete the interaction and negotiation of the signaling decision layer. The signaling and data are separated in two channels. .'·

The corresponding process is shown in Figure 2, including the following steps: . ' . ' Step 110, 'The policy enforcement point PEP sends a policy decision request message to the policy decision point PDF; 'Step 120, the PDF generated authorization token makes it Ability to identify the status of the authorization, 'If the previous • interaction does not contain business information, the PDF will send an authorization request to the AF (application layer);

Step 130: The AF returns an authorization response message to the PDF, carrying the service information;

Step 140: Based on the information of the foregoing response, if the QoS resources required by the AF session are consistent with the policy rules formulated by the operator in the PDF, the PDF will authorize the resources required for the session, and establish an IP bearer layer policy in the inter-domain database;

Step 150: The PDF sends a bearer resource request message to the external network resource controller via the Gu interface, where the request includes service information; . . .

Step 160: The external network resource controller returns a response with the bearer resource negotiation result to the PDF.

^: - Ή m, . *

Step 170: If the negotiation is successful, the PDF sends a policy decision message (DEC message.) to the PEP. Step 180: After the PEP is executed, send a policy execution report message (RPT message) to the PDF, and respond to the decision whether the execution is successful, and the establishment of the bearer is completed. . .

OFF - PATH mode has the following problems:

'1> PDF between the Gu interface and the resource controller of the external network, it is necessary to set up an IP-based independent signaling network to negotiate the resources of the external network required. The construction of this network is quite large.

• Engineering. · —— · · ' ·

• 2) PDF needs to extend its own functions for the OFF-PATH mode, such as configuring all external network resource manager information and corresponding routes. ·

.3) PDF needs to know which external networks are directly connected to the PEP so that the PDF can know and which The network is negotiating. Different PEPs may be directly connected to different external networks. Therefore, PDF needs to maintain different external network information for poor PEP, such as the address of the resource controller and its routing.

4) Because the processes of ON-PATH and OFF-PATH are different on the PDF side, PDF needs to determine which negotiation mode to use before negotiating. But which network element to determine, and how to determine, there is still no clear answer to the question. ,

The existing network architecture in the 0N-PATH mode is shown in Figure 3. In the 0N-PATH mode, the resource controller is not set in the external network, and the inter-domain resource negotiation is performed by the PEP or GGSN (GPRS support node gateway). The network element of the network transmission data medium is initiated to the edge router of the external network, and the signaling occurrence path is equivalent to the path of the data medium path. Currently, the main QoS negotiation signaling and negotiation methods include the RSVP series protocol, the MPLS-TE protocol, and the feedback negotiation method.

^: The main advantage ON- PATH model is no further establish the signaling network, media data stream path have been guaranteed QoS signaling, high protection factor. 'But there are also some problems, such as requiring all routers in the path to support negotiation protocols, such as RSVP.

In addition, for an IP access network that does not have a PDF and PEP function, how does the gateway accessing the external network, such as the GGSN in the GPRS packet domain, negotiate with the resource controller of the external network for end-to-end quality of service? There is no solution in the technology. ' . Summary of the invention

The technical problem to be solved by the present invention is to provide an inter-domain negotiation method, system and device for end-to-end quality of service, which can utilize both the partial path of the data medium and the domain of the quality of service between the external network resource controller and the external network resource controller. Negotiation.

The basic idea of the present invention to solve the above technical problem is: configuring a network element directly connected to the external network and responsible for transmitting data media to the external network, so that it has the QoS negotiation with the external network resource controller. 'Features. The present invention refers to these network elements as a resource negotiation initiation point (RNIP, RESOURCE 'EGOTIATION INITIATING POINT). For example, in the case where there is PDF in the domain, RNIP is equivalent to PEP; in the case where the domain is UMTS network and there is no PDF, RNIP is equivalent to GGSN (the GGSN mentioned in the text refers to GGSN without PEP function) or other IP connection A gateway that accesses the external network in the network. . ' '

After the configuration is complete, when there is a service in the domain that requires the guarantee of the external backbone network resources, and the external network manages the resources of the local network through the resource controller, the RNIP is the external network resource controller. A bearer resource request is initiated, and the two parties negotiate to determine whether the data stream can obtain an access permission on the external network. In this way, both the partial path of the data medium is utilized, and i is between the external network resource controllers.

Negotiation: So called a hybrid path. The method of the present invention combines some of the advantages of the OFF-PATH mode and the 0N-PATH mode, which is also referred to as the hybrid path mode (Hybrid PATH mode) hereinafter. .

Based on the above concept, the present invention provides an inter-domain negotiation method for end-to-end quality of service using a hybrid path. In the applied system, the network branches at both ends of the session are connected through two external networks. Domain, 'and at least one external network is provided with a resource controller, the method comprising the steps of: ': ·) being directly connected to the resource controller in the access network of the domain and responsible for media data transmission. On the network element, configure a module that sells the inter-domain coordination function of the hybrid path mode between the network element and the external network resource controller, so that the network element becomes a resource negotiation initiation point;

(b) The resource negotiation initiation point determines that there is a service in the domain where the service requires external network resources: guarantee, and obtains the information of the service including the self-labeled address and the required service quality, and determines ‘ An external network that needs to pass; ' .

(c) the resource negotiation initiation point acquires the addressing information and path of the external network resource controller: the information is encapsulated into the resource controller together with the service information including the required quality information.

Identifying a protocol bearer resource request message and then sending it to the resource controller;

(d) the resource controller of the external network receives the request for processing, sends a response message to the resource association originating point, and includes information with the negotiation result;

(e) ' j f, the resource negotiation initiation point obtains the inter-domain quality of service negotiation according to the response message

' the result of. ' . ... ' + .' : .. '' : : ' · + ^: _: · · '■ · · . ''+

Further, the foregoing inter-domain negotiation method may also have the following features: the resource negotiation initiation point is a policy in the access network. The execution point, in step (b), the policy that is sent from the strategic decision bear is determined. · Obtain the service information including the target address and the required quality of service in the message, initiate the negotiation with the resource controller, and in step '(e.), if the negotiation is successful, the policy execution point execution strategy is determined. The execution report is returned to the policy decision function module. ' ■ . ,

Further, the above inter-domain negotiation method may further have the following features: the resource negotiation initiation point is a support node gateway in a general packet radio service packet domain, and in step (b), it is from the packet In the packet data protocol context request message sent by the domain service support node, 'acquiring the service information including the target address and the required quality of service, and initiating negotiation with the resource controller, step (e). If the negotiation is successful, The support node gateway returns a success response to the service support node.

Further, the foregoing inter-domain negotiation method may further have the following features: (in the step), 5 is also configured with a 'standard Gw interface' between the resource negotiation initiation point and the resource controller of the directly connected external network. The 'interference message between the resource negotiation initiation point and the resource controller uses the protocol message specified by the standard interface. .

Further, the foregoing inter-domain negotiation method may also have the following features: The . . . used by the Gw interface is a COPS protocol or a DIAMETER protocol. .,

0 - . ' / . ' :..

Further, the foregoing inter-domain negotiation method may further have the following features:

' ·: and adopt two less negotiation modes initiated or initiated by the resource negotiation point, at the same time: . '

: Step. (a), in the resource negotiation initiation point ± configure the network selection policy and the external network support 'negotiation mode, and add a function bar for selecting the external network

5. In 'Step (b), 'the resource negotiation point is based on the target IP address, combined with the local route, the negotiation mode of the external network, and the network selection policy to select an external network that needs to be routed, and After step (b), it also includes: . . . .

' Step (bl)., . The resource negotiation point judges the negotiation mode supported by the selected external network. If it is the mixed path mode, perform the step. (c), otherwise, according to the process specified by the respective business mode, 0 end ' ' .

Further, the above inter-domain negotiation method may also have the following features: Step (b) When selecting an external network, the traffic information of the external network entry is also used as a factor of the judgment, and when other conditions are the same, the fluency is preferred. Small external network. ·

• Further λ, the above inter-domain association method may also have the following characteristics: In the step (e)′, after the resource negotiation initiation point receives the response message of the negotiation failure, the ‘continuation in the local policy is satisfied. When selecting the network conditions, reselect a network, 'return to step (c). '

' Further, the above inter-domain negotiation method may also have the following characteristics:

The negotiation mode includes a hybrid path mode and an online mode. ':

Further, the above-mentioned ± or servo negotiation method may further have the following features: In the step (c), the addressing information and the routing information of the external network resource controller acquired by the resource negotiation initiation point are in step (a). ) configured locally.

: Information; . .

'The external network and mode selection unit for negotiation before sending the negotiation request, according to the external •' negotiation mode network support, routing information, and select a network selection policy can guarantee the quality of ^service:... The network - ' .

The negotiation request initiating unit and the negotiating processing unit of the other mode are configured to initiate inter-domain negotiation with the external network in a respective mode, and process the received bearer resource request response.

Further, the above system may also have the following features: The other modes include an online mode. ·

Based on the above concept, the present invention further provides a device for implementing a hybrid path-style end-to-end service 10 quality inter-domain negotiation, which is an access network and directly connected to an external network. Responsible for media data

• The transmitted network element, characterized in that: the device is also equipped with S for the inter-domain quality of service negotiation.

• Functional units, including the message configuration unit, the negotiation request initiation unit of the hybrid path mode, and the negotiation unit, 'where;;

' The information configuration unit is configured with the path i information of the external network and the resources of the external network

15 addressing information of the controller;

The negotiation request initiating unit of the hybrid path mode is configured to acquire a service information required for the service quality negotiation including the target address, the required quality, and the addressing information of the external network resource controller. And organizing the information into a bearer resource request message to be sent to the selected external network

Resource controller; V ' · :.. .

The cooperative processing unit of the hybrid path mode is configured to receive a bearer resource request response from the external network resource controller, and obtain a result of the inter-domain quality of service negotiation. · .

: 'Further, the above device for implementing end-to-end quality of service inter-domain negotiation may have the following characteristics: The device is a policy enforcement point in the access network, and the hybrid path mode negotiation processing unit is also used. After the negotiation is successful, the policy decision is executed, and the execution report is returned to the corresponding policy decision function block. ; ' ·■ . . . ' '

Further, the above device for implementing end-to-end quality of service domain negotiation may have the following special point: the device 'is a supporting node gateway in a packet wireless service packet domain, where the 3⁄4 mixed path mode' The 3⁄4 quotient processing unit is also used to return success to the corresponding service support node after determining that the negotiation is successful.

The mouth should be. ' . ' . . . +. '

Further, the device for implementing the end-to-end quality of service inter-domain negotiation may have the following features: The device is also configured with a standard Gw interface for implementing the interaction of signaling messages between the two. Further, the foregoing device for implementing end-to-end quality of service inter-domain negotiation may have the following features: The device is further configured with an external network and a negotiation mode selection unit, and other initiated or initiated by the source and source negotiation points. The negotiation request sending unit and the negotiating processing unit of the mode, wherein:

5 ■ The information configuration unit is further configured with information of a network selection policy, a negotiation mode supported by the external network, and/or a protocol;

The external network and negotiation mode selection unit selects one to guarantee the service quality of the service according to the negotiation mode, routing information and network selection policy supported by the external network before sending the negotiation request.

' network of; · . ' :· : . . . ; , . . :, : - :

0, the negotiation mode of the other mode requests the initiating unit and the negotiating unit S unit, for using the respective mode rules

The fixed mode initiates inter-domain negotiation with the external network. The response to the received bearer resource request is processed.

:: Further, the above device for implementing end-to-end quality of service inter-domain negotiation may have the following features: The other modes include an online mode. ' · · '

Further, the above-mentioned device for selling end-to-end quality of service inter-domain negotiation may have the following five points: The negotiation processing unit is further configured to: after determining that the negotiation fails, 'will be based on the network selection policy, . 'Setting to continue to select the network conditions, select another network to initiate a new negotiation. If the conditions are not met, then do the failure. .. ' , '; ^:

It can be seen from the above that the present invention adopts the hybrid path mode to implement the inter-domain negotiation method, 'because the resource request 0 is initiated by the resource negotiation initiation point, and the existing network can be fully utilized for the case of the PDF decision. The OFF-PATH is avoided. In the mode: the establishment of the signaling network between the PDF and the external network resource controller, and the consistency requirements for the direct connection between the PDF and the PEP and the external network. PDF only makes policy decisions and sends them to PEP, 'Without any functional extensions, there is no need to configure, maintain and probe any external network information. Easy network stability maintenance. For the case without PDF decision, 'With the present invention, the GGSN can still root 5. According to the quality of service signed, the resource negotiation based on the hybrid path mode is initiated to the external network.

Further, when the resource negotiation initiation point is connected to a plurality of external networks, the present invention can configure the network and the negotiation mode selection function in the resource negotiation initiation point, and in the case of the PDF decision, the 'may·' can effectively utilize the resource negotiation. Initiate the existing network traffic information, select the network with smaller traffic to negotiate, and thus increase the success of the network and resource negotiation. The resource negotiation initiation point can set such a selection function because of the hybrid function. Path mode and ON-PATH do not require PDF-initiated negotiation, and the mixed-path mode can be very good for models that do not have new functional and process requirements. Ex situ and these modes are combined to enable negotiation with multiple external networks of different modes. For the case of no PDF decision, the GGSN is more conducive to selecting the external network and requesting negotiation according to the quality of the contracted service. .'.. ■: ■ .' . . .

5 Overview of the drawings

+ Fig. 1 is a network architecture diagram of inter-domain QoS guarantee in the existing OFF-ΡΑ7Ή mode. :

Figure 2 is a flow chart of the existing authorized QaS resources and inter-domain bearer establishment in OFF-PATH mode. · . . . Figure 3 is a network architecture diagram of inter-domain QoS. guarantee in the existing 0N-PATH mode. .

4 is a network architecture diagram when the PEP initiates a mixed mode inter-domain negotiation and only one external network 0 is in the first embodiment of the present invention. · : '· . :

Figure 5' is a flow chart showing the first embodiment of the present invention. ' '

FIG. 6 is a network architecture diagram of the second embodiment of the present invention when the inter-domain negotiation is initiated by the PEP and there are multiple external networks using different negotiation modes. -. ·

FIG. 7 is a schematic diagram of signaling interaction in an inter-domain bearer setup process according to a second embodiment of the present invention. Figure 8 is a diagram showing the architecture of the inter-domain negotiation initiated by the GGSN in the third embodiment of the present invention. FIG. 9 is a schematic diagram of signaling interaction in an inter-domain bearer setup process according to a third embodiment of the present invention. ·

: Best Practices of the Invention ' ..

The following is a specific description of the QoS inter-domain negotiation method and system of the mixed path mode initiated by the PEP, which is initiated by the PEP. .. '

First embodiment.

In this embodiment, the inter-domain negotiation is initiated by the PEP and there is only one external network adopting the hybrid path mode. 'The network architecture of the system is shown in Figure 4. The network branches at both ends of the session are connected in two domains through the external backbone IP network. The domain in which the negotiation is initiated has PEP and PDF, and the external backbone IP network has resource controllers.

In order to implement the QoS inter-domain negotiation of the hybrid path between the PEP and the external network resource controller, the PEP of the embodiment has the following functional units: .

The information configuration unit, the PEP local route itself has been configured with the routing information of the F-part network. The implementation of this parameter also needs to configure the address information such as the resource controller address or network segment of the external network. .

A negotiation request initiating unit of a hybrid path mode, which is used to collect or acquire necessary QoS negotiation Information, including the required QoS information '(here, the QoS policy determined by the PDF), the target IP address, etc., and at the same time, obtain the selected network (in this embodiment, the PEP is only connected to one external network, The IP address of the resource controller (which can be obtained by configuration, domain name resolution, etc.) and the information is organized into a bearer resource request message, which is sent through the Gw interface. The resource controller of the external network.

The Gw interface, the Gw interface is a standard interface defined in this embodiment to implement the association between the PEP and the external network resource control, and a protocol such as COPS or DIAMETER can be used. . '

The hybrid path mode negotiation processing unit is configured to process the received bearer resource request response from the external network resource controller, that is, for a successful response, perform a PDF policy decision, and then send a policy execution report message to PDF-0 ( RPT message) ; For failed responses, failure processing is performed.

Correspondingly, the external network resource controller mainly includes the following three related functional units: The local network resource control unit is responsible for managing and allocating resources of the local network, and completing admission control of the external network; QoS - resource negotiation unit, for Receiving resource requests from 'other contracted networks, allocating the required resources, and finally returning the response and the Gw interface for inter-domain negotiation with .PEP '5:: . The other two units are identical to the prior art except for the Gw interface. ' '

The following describes the process of establishing an inter-domain bearer in this embodiment. As shown in Figure 5, after the IMS session is established, the process includes the following steps:

Step 210: The PEP sends a policy decision request message to the PDF;

0. Step 220, the PDF will send an authorization request to the AF;

Step 230, the AF returns an authorization response to the PDF, and carries the service information;

Step 240, the PDF authorizes the resources required for the session, and establishes an IP bearer layer policy in the inter-domain database; ': : - '

These four steps are the same as the prior art flow of Figure 1, in which steps 220 and 230 can be omitted. 5 Step 250, the PDF sends a policy decision message (DEC message) to the PEP via the Go interface, the message

. With business information including target address, QoS policy;

Step 260: The PEP obtains the foregoing information from the received DEC message, and obtains the resource controller IP address and routing information of the external network supporting the hybrid path mode. The PEP targets the service: [P-address, QoS policy, etc., encapsulates the bearer request message of the interface protocol, and sends it to the 0 resource controller of the external network; Step 270, · After receiving the request, the external network resource controller performs processing ' (such as admission control and resource allocation), and then returns a bearer resource response message to the PEP through the Gw interface, where the message includes the negotiation result, the confirmed QoS information, Information such as the IP address of the PEP. receiving the message;

Step 280: The PEP receives the response message. If the negotiation is successful, the resource negotiation with the external network is completed. Otherwise, the failure processing is performed.

• Steps 250-280 are steps directly related to inter-domain negotiation. .

It can be seen that the negotiation method of the hybrid path mode in this embodiment has the following advantages:

1) The resource request is initiated by PEP instead of the policy decision point PDF. In this way, the existing network can be fully utilized, and the establishment of a signaling network between the PDF and the external network controller in the OFF-PATH mode is avoided; . . . .

.2) PDF does not have any functional extensions in this mode, so there is no need to configure, maintain, and probe any external network information (such as the resource controller's address, corresponding route, and network traffic congestion, etc.). Just make a policy decision (SBLP) and send it to you. At the same time, it is easy to maintain network stability. '

3) OFF-PATH mode PDF, PDF needs to maintain different direct-connected external network's information for different PEPs, such as the address of the external network resource controller and its routing (see the background technology for the problem of OFF-PATH) Point). How to ensure the consistency of PDF and PEP directly with the external network and maintain the external network 'Information is a necessary and important issue. This mode uses PEP. Sending a request avoids the guarantee and maintenance requirements for the consistency of this connection. '

'Second embodiment

In this embodiment, PEP initiates inter-domain negotiation, and PEP is directly connected to multiple external networks that use different negotiation modes, such as ON-PATH mode and mixed path mode. The network architecture of the system in this embodiment is as shown in FIG. 6. The difference from the first embodiment is that the PEP in the initiated negotiation domain is directly connected to multiple external networks, and some of the external networks adopt the ON-PATH mode. Negotiation, some use mixed path mode negotiation, and some can use ON-PATH and mixed path negotiation. Some can support multiple modes of negotiation. This embodiment takes the selection in the ON-PATH and mixed path modes as an example.

In order to achieve 3⁄4 negotiation with multiple directly connected external networks, the PEP of this embodiment needs to add three related functional units: The external network and the negotiation mode selection unit are configured to select a network that is easier to secure the service QoS. according to the support mode of the external network, the routing information, and the network selection policy before the negotiation request is sent. Among them, in the configuration selection strategy, the outlet traffic or the remaining width of the network can be regarded as a factor of the judgment. When other conditions are the same, the upper 5 networks with smaller traffic are preferentially selected, and the rogue is already composed of PEP. Some flow detection units are used to detect.

The negotiation request initiating unit of the ON-PATH mode is used to initiate inter-domain negotiation with the external network in the ON-PATH mode.

The ON-PATH mode negotiation processing unit is configured to process the received bearer resource request response in a manner specified by the 0N-PATH mode. . : ' '

0 " ': In addition, the PEP of this embodiment has the same negotiation request initiating unit 'and interface' as the first embodiment, and the description is not repeated. The information matching unit and the negotiation processing unit are different, ' among them: .:, '. ' . ; · · ,:. .. . ' · ··, '

The information configuration list is configured with routing information and the address or network segment of the external network resource controller, etc.: in addition to the addressing information, the network policy is also configured. (If the external network is selected, the traffic policy, network flow 5 ·· The decision rule of factors such as quantity, continue to choose the conditions to be selected by the network, etc.), QoS negotiation mode supported by the external network: (such as ON-PATH mode, mixed path mode) and protocol (refer to QN-PATH: mode) Information on the use of associations, such as the RSVP. protocol. · '

The processing of the successful response by the negotiation processing unit is the same as that of the first embodiment. However, for the failed response, another network is selected according to the network selection policy and the network selection condition is continued. If the conditions are not met, then fail processing. ' .' · . ' ' '

The resource controller of the external network using the hybrid path mode is the same as the first embodiment, and there is also a local resource control unit QoS resource negotiation unit and a Gw interface. ' . . '

When there are multiple external networks directly connected to the PEP, the 5. signaling interaction process between the functional modules when the inter-domain bearer is established is shown in Figure 7. The inter-domain bearer establishment process includes the following steps:

Steps 410~450, which are exactly the same as step 21 (Γ250, no longer repeat them; '.

'Step 460, ΡΕΡ· After obtaining the service information including the target IP' address and the QoS policy in .···· from the received DEC message, the target IP address and local route, the external network Supported QoS. Negotiation ;;; : Network selection strategy (considering the traffic information of the 'ingress' of the external network), choose an external network that needs to pass;

0. Step 470, .PEP'. Determine the QoS negotiation mode supported by the selected external network. If it is a hybrid path

+ Path mode, execute the next step. If it is ON-PATH mode, press the ON-PATH mode process.

''■ : ' · · ' - . . ■ 12 . · · .End;

Here, if the selected external network adopts the ON-PATH mode and the mixed path mode at the same time, the PEP can select an appropriate negotiation mode according to the locally configured network selection policy - (for example, the "camp strategy").

Step 480, 'PEP obtains the IP address and routing information of the selected external network resource controller, and encapsulates the service information such as the IP address and the QoS policy into a bearer resource request message of the Gw interface protocol, and sends the message to the Resource controller for the external network; ' ■ .

^In step 490, after receiving the request, the external network resource controller performs admission control and resource allocation, and returns a bearer resource response message to the PEP through the Gw interface, including the negotiation result, the confirmed QoS information, and the IP address of the PEP receiving the message. And other information; .

'Step ⁵ 00, PEP judges that the apricot negotiation succeeds according to the response message, and if yes, performs the next step, otherwise, performs step 520; .

Step 510, PEP executes the PDF policy decision, then sends an RPT. message to . PDF. Completes the establishment of the bearer, ends; • : ■ · .

- Step 520, the PEP determines whether the set continuous network selection condition is met, and if so, selects another 'an external network, and then returns to step ⁴⁷ 0, otherwise, the failure processing is completed, and the process ends.

Among them, steps 460~500 are steps directly related to inter-domain negotiation. ·

Can look at hB, the hybrid path mode and ON-PATH proposed by the present invention are not available for PDF. New functional and process requirements, so it is easy to implement multiple externalities for different negotiation modes. The network makes selections and negotiations. In addition, the PEP of the embodiment can negotiate the traffic status of the connected multiple external networks, and select an external network with a relatively small traffic to negotiate, thereby increasing the success of network resource negotiation.

Third Embodiment ' · ' · ' · · '

In this embodiment, the GGSN initiates inter-domain negotiation, and the GGSN is directly connected to multiple external networks that use different negotiation modes. The network architecture of the system is shown in Figure 8. There is no PDF configured in the GPRS packet domain, and there is no FFI function on the GGSN. Therefore, the first and second real embodiments cannot be used, but the GGSN needs to be based on the user. The subscription information and activation parameters (such as the destination IP address, QoS parameters, etc.) initiate a negotiation request to the external network. . ' '

In order to achieve QoS negotiation with multiple external networks, the GGSN needs to set an information configuration unit, a Gw interface, a hybrid path mode negotiation request initiation unit, and a negotiation processing unit. The negotiation request initiation unit and the negotiation processing unit of the ON-PATH mode, the external network, and the negotiation mode select the 'selection unit. Among the units, only the function of the negotiation processing unit of the mixed path mode and the ON-PATH mode is different from that of the second embodiment, that is, after the negotiation succeeds or fails, the GGSN is returned to the SGSN (GPRS service support node). Response message.

The function of the 5' external network resource controller is the same as the first two embodiments. ' · .' .: ' '

In the present embodiment, the signaling interaction process of each function module when the inter-domain bearer is established may refer to the figure ''9. The process of bearer establishment includes the following steps: ' . . .

Step 610: The terminal initiates a packet data protocol (PDP': Packet Data Protocol): 0: + a live request, including QoS parameters required for the service; · : . ' '

Step ⁶² 0, SGSN. After receiving the request, the request is reviewed. If the QQS '' standard and other subscription information are met, the user-side PDP context request message is sent to the GGSN, including: Business information such as QoS parameters and destination IP addresses; ''

'Step' 630, after the GGSN receives the request, at the same time as establishing the tunnel, reviewing the user's target IP5 address, 'If the external network bearer support is required, 'based on the local route, the external network support negotiation mode and selection The network policy (considering the traffic information of the external network portal) selects "the external network that needs to pass through." Step ' 640, the GGSN determines the QoS negotiation mode supported by the selected external network ^, if it is the hybrid path', the path mode, execute One step, if 臬 is other modes such as 0N-PATH, after processing according to their respective processes, end; ' ' . '.+ ... · · ' . ':· :

Step 650: The GGSN obtains the IP address and routing information of the selected external network resource controller, and encapsulates the service information such as the IP address of the resource controller, the QoS parameter and the target IP address when the resource controller is activated into Gw. The bearer resource request message of the interface protocol is sent to the outer network through the Gw interface.

: resource controller; . . . : . . . : . ^: + . ':' : ' · · · · Step 660, 'External network resource controller receives admission request, performs admission control and resource allocation, . Receiving a bearer resource response message with the GGSN, including the negotiation result, the confirmed QoS information, the IP address of the GGSN receiving the message, and the like;

Step 670: After receiving the response message carrying the resource, the GGSN determines whether the negotiation is successful, and if yes, performs the next step, otherwise, performs step 690.;

Step 680: Return to the SGSN to create a PDP. The context is successfully responded. The terminal establishes a wireless connection between the terminal and the SGSN, and the SGSN returns the activation acceptance to the voice terminal, and the east end; , . . . Step 690: The GGSN determines whether the network selection condition is met. If yes, return to step 650 after selecting another external network. Otherwise, the GGSN returns a response to the SGSN that fails to create a PDP context, : the bearer establishment fails, .. ends. .

Wherein steps 630-670 are directly related to inter-domain negotiation. ' ' .

'5 Obviously, 'When the GGSN is only connected to an external network in the mixed path mode, the ON-PATH mode negotiation request initiating unit and the negotiating processing unit, and the external network can be removed on the basis of the third embodiment. Negotiate mode selection unit. In addition, in the process, it is necessary to delete the content related to the network selection and 0N-PATH mode.

10: The above embodiment discloses the embodiment of the present invention, but the present invention is not limited to .. : ifc. For example, 'in another embodiment; the interface between PEP' and the external network resource manager is not used _: ,. ' . Then a protocol conversion sub-unit needs to be set in the negotiation request sending unit of the PEP for QoS Negotiate the necessary information and organize it into the protocol used by the external network resource manager to send it again. · In the information ffi set unit · ' need to configure the information used by the external network resource manager. Protocol. . '

15; . . . , 'The invention is not limited to. GGSN and PEP two resource negotiation initiation points, 'interconnection: the network element of the transportable media data directly connected to the external network in the network, necessary for configuration After the functional modules, . . can be used as the 'investigations' of the present invention.

Industrial applicability

0. The present invention can be applied to network branches at both ends of a session in two domains connected by an external network., . . . : and at least one external network has a resource controller in the system to achieve end-to-end quality of service. Negotiation between the balls. · ' . . ' ' . ·' · - · . '

Claims

Claims for rights : .

1. An inter-domain negotiation method for end-to-end service quality using a hybrid path, in the system of application, the network at both ends of the session is divided into two domains connected through an external network, and at least one external The network has a resource controller, and the method includes the following steps:

5. (a) on the network element of the access network of the domain directly connected to the resource controller and responsible for media data transmission, the configuration is implemented between ^{: the} network element and the external network resource controller The domain of the hybrid path mode to the negotiation function module makes the network element a resource negotiation initiation point;

(b) The capital verification/declaration initiation point determines that there is a service in the domain where the business needs external network resources. After obtaining the information, including the target address and the required service quality, the business is determined.

10 external networks that need to pass. _. :: +. . ' .

' ' ( c ) the resource negotiation initiation point acquires the addressing information of the external network resource controller, and

' The service information containing the service information is encapsulated together with the resource controller identifiable protocol's bearer resource request message, 'and then sent to the resource controller; : '

(d) The resource controller of the external network receives the request and performs the operation, sends a response message to the resource association: 5, and includes the information with the negotiation result; .

• ' .( e ). The resource negotiation initiation point is based on the response message.

:,the result of. : :'' : : · · . ' : · . .□ ·. :

'2 ,. interdomain negotiation method as claimed in claim .1, characterized in that the initiating point is a resource negotiation policy enforcement point in the access ^network,: step (b), which from the Policy Decision Function The policy of sending 20. Slightly determine the message containing the target address, the required service ^{: the} quality of the service information, the initiation and negotiation between the resource controller, 'step 骧. (e). Succeeded, the policy execution point execution policy is returned to the policy decision function module to return an execution report. ''

3. The inter-domain negotiation method according to claim 1, wherein the resource is negotiated and sent. The starting point is a supporting node gateway in a general packet radio service packet domain, and in step (b), it is from the 25 The packet domain service supports the packet data protocol context request message sent by the defect to obtain the service information including the target address, the required quality of service, and the negotiation between the originating and the resource controllers: 歩' (e) If the negotiation is successful, the support node gateway returns a successful response to the service support node. ·

The method of inter-domain negotiation according to claim 1, 2 or 3, characterized in that the step

''- - 1.6 . ' · ' . In (a), a standard Gw interface is also configured between the resource negotiation initiation point and the resource controller of the directly connected external network, and the interaction between the resource negotiation initiation point and the resource controller is The protocol message specified by the standard interface is adopted.

The inter-domain negotiation method according to claim 4, wherein the Gw interface adopts 5 is a COPS protocol or a DIAMETER protocol. .

6. The inter-domain negotiation method according to claim 1, 2 or 3, wherein the external network has a plurality of 'and at least two types of negotiation initiated or initiated by the resource negotiation point Mode, the same.

' Time:: . ' ::: . ... · ' · '

In step (a)., the 10 negotiation mode of the network selection policy and the external network support is also configured on the resource negotiation initiation point, and the function module for selecting the external network is added.

Step (b). The resource negotiation 'point is based on the target IP address, combined with the local route, the negotiation mode supported by the external network, and the network selection policy to select an external network that needs to be routed, and Steps. (b) After that, including: ...

The parameter negotiation point determines the negotiation mode supported by the selected external network. If 5 is the mixed path mode, step ( _C ) ',. Otherwise, according to the process specified by the respective negotiation mode,

'End. , . ■ - ' . " ' '

7. The inter-domain negotiation method according to claim 6, wherein, when the external network is selected in step Cb), the traffic information of the external network entry is also used as a factor of the judgment, 'when other conditions are the same , prefer an external network with a small traffic. + '

The method of inter-domain negotiation according to claim 6, wherein in the step (e), after the resource negotiation initiation point receives the response message of the negotiation failure, the local policy stipulates that After renewing the network conditions, re-select a network and return to step (c.). . '

9. The inter-domain negotiation method according to claim 6, wherein 'the negotiation mode on the external network comprises a hybrid path mode and an online mode.

5. The inter-domain negotiation method according to claim 1, wherein in the step (c), the addressing information and routing information of the external network resource controller acquired by the resource negotiation initiation point are Configured locally in step (a). , .

11. A system for inter-domain quality negotiation between end-to-end quality of service in a hybrid path mode, including 'The network at both ends of the session, and the external network connecting the two domains to which the two networks are connected, at least one external network has a resource controller and adopts a hybrid path negotiation mode, and the access network that initiates the session has A network element connected to the resource controller and responsible for media data transmission is characterized by:

The network element is further configured with a functional unit required for inter-domain quality of service negotiation, as a resource negotiation initiation point, where the resource negotiation initiation point includes an information configuration unit, a hybrid path mode negotiation request initiation unit, and a negotiation processing unit, where ; '

The information configuration S unit is configured with routing information of an external network, and addressing information of a resource controller of the external network;

The negotiation request initiating unit of the mixed path mode is used to obtain the target address and the required service

The service information negotiated by the quality of service and the addressing information of the selected external network resource controller are organized into resource information that the bearer resource request message is sent to the selected external network. . . . ' '

The negotiation processing unit of the hybrid path mode is configured to receive a bearer resource request response from the external network resource controller, and obtain a result of the inter-domain quality of service negotiation. ·· +

The end-to-end quality of service inter-domain negotiation system according to claim 11, wherein the resource negotiation initiation point is a policy execution point in the access network, and the mixed path mode in the policy execution point is The negotiation processing unit is further configured to: after determining that the negotiation is successful, execute the policy decision and return an execution report to the corresponding policy decision function module. ·

The end-to-end quality of service inter-domain negotiation system according to claim 11, wherein the resource negotiation initiation point is a support node gateway in a packet radio service packet domain, and a hybrid path in the gateway. The mode negotiation processing unit is further configured to return a success response to the corresponding service support node after determining that the negotiation is successful. '

The system of the end-to-end quality of service inter-domain negotiation according to claims 11, 12 and 13, wherein the resource negotiation initiation point and the resource controller are both configured with a standard Gw interface. Used to implement the interaction of signaling messages between the two. '

The end-to-end quality of service inter-domain negotiation system according to claims 11, 12 and 13, wherein: the foreign exchange network has other negotiation modes other than the hybrid path mode. The resource negotiation initiation point is further provided with an external network and a negotiation mode selection unit, and other negotiation request sending units and negotiation processing units of the mode initiated or initiated by the resource negotiation point, wherein

The information configuration unit is further configured with information of a network selection policy, an negotiation mode supported by the external network, and/or a protocol.

5 ' The external network and negotiation mode selection unit is configured to select a network capable of guaranteeing service quality according to the negotiation mode s 'route information and network selection policy supported by the external network before sending the negotiation request, · · · ·

The negotiation mode initiating unit of the other mode, the negotiation processing unit, initiates inter-domain negotiation with the external network in a respective mode, and processes the received bearer resource request response.

10. The system of inter-domain quality of service inter-domain negotiation according to claim 15, wherein

The other modes include an online mode. .

. . . , "A device that implements the end-to-end quality of service domain of the hybrid path mode. The device is a network element that is directly connected to the external network and responsible for media data transmission. The device is also configured with the functional units required for the inter-domain quality of service negotiation, including the information configuration list 15 yuan, the hybrid path mode negotiation request initiation unit, and the negotiation processing unit.

The information configuration unit is configured with routing information of the external network, and resources of the external network, and addressing information of the controller.

The negotiation request initiating unit of the hybrid path mode is configured to acquire service information required for quality of service negotiation including a target address and a required quality of service, and addressing information of the selected external network resource controller 20, and organize the information. a bearer resource request message is sent to the resource controller of the selected external network;

The negotiation processing unit of the hybrid path mode is configured to receive a response request from the external network resource controller, and obtain a result of the inter-domain quality of service negotiation.

18. The device for inter-domain quality of service inter-domain negotiation according to claim 1.7, wherein the device is a policy enforcement point in the access network, wherein the hybrid path mode is negotiated. The unit is also used to execute the policy decision and return an execution report to the corresponding policy decision function module after determining that the negotiation is successful. . '

19. An apparatus for inter-domain quality of service inter-domain negotiation as described in claim 17 The device is a support node gateway in the packet radio service packet domain, and the negotiation path processing unit of the hybrid path mode is further configured to: after determining that the negotiation is successful, return a success response to the corresponding service support node. · · · .

20. The device for inter-domain quality of service inter-domain negotiation according to claims 17, 18 and 19, wherein the device is further configured with a standard Gw interface for implementing both Let 'message interaction. ' ' ' ' ' , '

A device for inter-domain quality of service inter-domain negotiation according to claim 17, wherein the device is further configured with an external network and a negotiation mode selection unit. a negotiation request sending unit and a negotiation processing unit of a mode initiated or initiated by the quotient> wherein: '0' the information configuration unit is further configured with a network selection policy, an negotiation mode supported by the external network, and/or a protocol information;

The external network and the negotiation mode selection unit are used to select a network capable of guaranteeing the quality of the service quality before the negotiation request is sent: • The network-supported negotiation mode, the routing information, and the network selection policy; . . . 5. The negotiation request initiating unit and the negotiating processing unit of the other mode are used to initiate inter-domain negotiation with the external network in a manner specified by the respective mode, and 'receive the received bearer resource request response. .

22. The end-to-end quality of service inter-domain negotiation system of claim 21, characterized in that the other mode comprises an online mode. ' · ' .:. ': '· .:

The device of the end-to-end quality of service inter-domain association according to claim 21, wherein the negotiation processing unit is further configured to: after determining that the negotiation fails, according to the network selection policy Select another network to initiate a new negotiation when the character is set to continue the network selection condition. If it does not meet the conditions, do it again. • Failure processing. ■