WO2009132548A1

WO2009132548A1 - Strategy determining function entity, home gateway, service quality controlling method and the system thereof

Info

Publication number: WO2009132548A1
Application number: PCT/CN2009/071273
Authority: WO
Inventors: 吴钦; 厉益舟; 杨佩林
Original assignee: 华为技术有限公司
Priority date: 2008-04-30
Filing date: 2009-04-15
Publication date: 2009-11-05
Also published as: CN101572719A; CN101572719B

Abstract

A strategy determining function entity, Home Gateway, service quality controlling method and the system thereof have been disclosed. The service quality controlling method comprises the steps of: receiving the service request or the service quality strategy rules request sent by Home Gateway or by Home Gateway collocation unit; performing authorization and determination to the service request, determining the service quality strategy rules corresponding to the service requested by the service request based on the service identifier carried by the service request; or performing authorization and determination for the service quality strategy rules request, determining the service quality strategy rules corresponding to the service controlled by the Home Gateway based on the Home Gateway position information, Home Gateway identifier and the terminal identifier carried by the service quality strategy rules request; sending the determined service quality strategy rules to the Home Gateway which is used for distributing the service quality resource to the service request. The embodiments of the present invention solve the problem of the dynamic service quality control in Customer Premises Network.

Description

Policy decision function entity, home gateway, service quality control method and system The application is submitted to the Chinese Patent Office on April 30, 2008, and the application number is 200810027828.0, and the invention name is "strategic decision function entity, home gateway, service quality control method" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a policy decision function entity, a home gateway, a service quality control method, and a system. Background technique

The Next Generation Network (NGN) is a service-driven network. The transmission control layer of the NGN network provides user access and service access respectively. The Network Attachment Control System (NACS) focuses on user access. Its functions include: terminal access management, user access management, network resource control interface, and control interface management with service access. User access management is independent of the terminal. It is the logical name of the contracted user entity. It needs to be authenticated and accounted for. It is the core of the user access part. The Resource Admission Control System (RACS) focuses on service access. Its functions include: service identification management, service charging management, interface management with user access, network device control interface management, and so on. NACS and RACS actually become the true public access infrastructure, which not only supports the access of IP Multimedia Subsystem (IMS) services, but also supports the access of all IP applications. After a service user accesses the network, it only registers the online status of the service user and the location information of the terminal. Only when it allows a certain network service application software, will the network resource be demanded, or even said, Without specific network services, there would be no broadband service users.

At present, in the NGN network, the home gateway used to integrate the access of multiple digital application devices in the home has attracted much attention, and it has been favored by operators because of the user's business requirements. An important business requirement mentioned in the NGN RACF is that the NGN network is required to support resource admission control interaction with the Home Network. Home network refers to a home information platform that integrates a home control network and a multimedia information network. It implements information equipment, communication equipment, entertainment equipment, household appliances, automation equipment, lighting equipment, and security (monitoring) devices within the family. And water and electricity heat meter Equipment for interconnection and management of equipment such as standby, home help alarms, and sharing of data and multimedia information. The home network is divided into functional layers of the system, which can be roughly divided into a service layer, a control layer, a media layer, a bearer layer, and an access layer. The bearer layer is a bearer network composed of routers and the like.

Home network QoS control is a key link in the implementation of QoS control. As the connection point between the internal LAN and the external telecommunication network, the home gateway is the link between the broadband service and the home; the home gateway forwards the service and management request of the external network to the home network, and also provides the internal equipment of the home network to the service system. Connection; The home gateway is also connected to the service platform as a terminating device to provide various broadband services for home users. With the deepening of the home network service, it is an embodiment of ensuring the QoS of each user terminal in the home network by reasonably allocating the required bandwidth for various services in the home gateway. The QoS control of the home gateway includes two parts: service traffic identification and quality of service policy control. The service traffic identification refers to identifying and distinguishing the types of service traffic of different terminals within the home at the home gateway. At present, the method of identifying traffic traffic is more static port binding. The disadvantage is that dynamic ports are not supported, which is not conducive to users. Another alternative service identification scheme is to design a dedicated traffic identifier, which automatically identifies the traffic by analyzing the application layer protocol through Deep Packet Inspection (DPI). The disadvantage is that each packet needs to be Analysis is performed, so there is a high requirement for the performance of the home gateway, and it is impossible to distinguish between legitimate traffic and illegal traffic. The service quality policy control is based on the service traffic identification, based on the service priority, different user groups, different user rights, and dynamic adjustment of QoS resources (such as bandwidth resources) of different services.

As shown in FIG. 1 , a policy-based home gateway service traffic identification method provided by the prior art is implemented as follows:

In step 1, the home terminal is connected to an automatic configuration server (ACS), and the identification information of the terminal (such as an IP address, a terminal type, a terminal identifier, etc.) is reported to the ACS.

In step 2, the ACS authenticates the terminal.

In step 3, after the authentication succeeds, the ACS uses the identification information of the terminal to query the service application system (service server) for the service information of the terminal;

In step 4, the ACS requests, by using the obtained service information of the terminal, a policy (Policy Decision Function, PDF) to obtain a policy matching the service of the terminal;

In step 5, the ACS installs the terminal service quality policy rule obtained from the PDF to the home gateway; In step 6, the home gateway implements identification and control of service traffic by using a control method included in the quality of service policy rule.

In summary, the home gateway is the core component of the home network, which can provide home networking, QoS guarantee, security management, etc. However, the main problem of the home gateway is that the service quality policy rule configuration lacks a flexible mechanism. For example, if the method of traversing a large number of methods is to statically configure the QoS policy of the home gateway, the static port is bound to the QoS resource. When a certain service bandwidth of the terminal in the home network cannot be guaranteed, or when there are resource competitions in multiple services, The home gateway cannot re-adjust the bandwidth budget of various services, or even if a certain service bandwidth resource is surplus, it cannot release this part of the bandwidth for important business use, resulting in waste of bandwidth resources of the home network. In addition, when the service corresponding to a certain terminal is updated or changed, the home gateway cannot adjust the QoS resources of the terminal corresponding service in time. For example, the bandwidth of the IPTV unicast service corresponding to a user terminal of the home network is 2M, when the unicast service of the user terminal is changed. When the service is a multicast service, the corresponding bandwidth requirement is 4M. Therefore, the bandwidth requirement of the home gateway for the multicast service also needs to be updated.

The inventors found that the prior art has the following disadvantages during the research process:

The policy-based home gateway service traffic identification system and method provided by the prior art are only suitable for static configuration of multiple service QoS resources in the home gateway (regardless of whether the user has requested the service, all QoS resources are reserved for the service), for the burst The service request, such as the IPTV unicast/multicast service request, cannot dynamically allocate and adjust the QoS resources when the required service QoS resources are insufficient. Summary of the invention

The embodiment of the invention provides a policy server, a home gateway, a service quality control method and a system, which can implement QoS dynamic control of different services in a home network.

To solve the problem in the prior art, the embodiment of the present invention provides a service quality control method, including:

Obtaining a quality of service policy rule from a policy decision function entity;

Converting the quality of service policy rules that are not converted into the bearer layer in the home network into the quality of service policy rules of the bearer layer in the home network;

Performing the converted quality of service policy rules.

The implementation of the present invention also provides a service quality control method, including:

Receiving a service request or a quality of service policy rule request sent by a home gateway or a home gateway configuration unit; Authorizing and deciding the service request, determining a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request; or authorizing and deciding the service quality policy rule request, Determining a service quality policy rule corresponding to the service controlled by the home gateway according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the service quality policy rule request;

The determined quality of service policy rule is sent to a home gateway that allocates quality of service resources for the service request.

The embodiment of the invention further provides a home gateway, including:

a policy decision unit, configured to obtain a QoS policy rule from the policy decision function entity, and convert the QoS policy rule that is not converted into a bearer layer in the home network into a service quality policy rule of the bearer layer in the home network;

a policy execution unit, configured to execute the converted quality of service policy rule.

The embodiment of the invention further provides a policy decision function entity, including:

a policy decision unit, configured to perform authorization and decision on the service request, determine a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request, or perform the service quality policy rule request Authorizing and determining, according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the request for the service quality policy rule, determining a service quality policy rule corresponding to the service controlled by the home gateway;

And a policy sending unit, configured to send the quality of service policy rule determined by the policy decision unit to the home gateway.

Correspondingly, the embodiment of the present invention further provides a service quality control system, including a policy decision function entity and a home gateway, where the policy decision function entity is configured to perform authorization and decision on a service request, and is carried according to the service request. The service identifier determines a service quality policy rule corresponding to the service requested by the service request; or authorizes and determines the service quality policy rule request, according to the home gateway location information and the family carried in the service quality policy rule request a gateway identifier and a terminal identifier, and determining a service quality policy rule corresponding to the service controlled by the home gateway;

The home gateway is configured to obtain a quality of service policy rule from a policy decision function entity, and convert the service quality policy rule that is not converted into a bearer layer in the home network into a service quality policy rule of the bearer layer in the home network, and then perform the The converted quality of service policy rules.

Implementing the policy decision function entity provided by the embodiment of the present invention, the home gateway and the quality of service controller The method and system have the following beneficial effects:

The policy decision function entity performs authorization and decision on the service request, and determines a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request; or a service sent by the home gateway or the home gateway configuration unit The quality policy rule requests the authorization and the decision, and determines the service quality policy rule corresponding to the service controlled by the home gateway according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the service quality policy rule request; The determined quality of service policy rules are sent to the home gateway implementation, which solves the problem of QoS dynamic control. DRAWINGS

1 is a schematic flow chart of a policy-based home gateway service traffic identification method provided by the prior art;

2 is a schematic structural diagram of a first embodiment of a service quality control system according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of a second embodiment of a service quality control system according to an embodiment of the present invention; Schematic diagram of the strategic decision function entity;

FIG. 5 is a schematic structural diagram of a home gateway according to an embodiment of the present invention;

6 is a schematic flowchart of a first embodiment of a service quality control method according to an embodiment of the present invention; FIG. 7 is a schematic flowchart of a second embodiment of a service quality control method according to an embodiment of the present invention; FIG. 9 is a schematic flowchart of a fourth embodiment of a service quality control method according to an embodiment of the present invention; FIG. 10 is a fifth implementation of a service quality control method according to an embodiment of the present invention; FIG. 11 is a schematic flowchart of a sixth embodiment of a service quality control method according to an embodiment of the present invention; FIG. 12 is a schematic flowchart of a seventh embodiment of a service quality control method according to an embodiment of the present invention; FIG. 14 is a schematic flowchart diagram of a ninth embodiment of a service quality control method according to an embodiment of the present invention; FIG. 15 is a schematic diagram of a service quality provided by an embodiment of the present invention; Schematic diagram of the tenth embodiment of the control method; FIG. 16 is a flowchart of the embodiment of the present invention Service quality control method of a flow of the eleventh embodiment schematic view of the embodiment;

FIG. 17 is a schematic flowchart of a service request processing of a home gateway according to an embodiment of the present invention; FIG. 18 is a schematic flowchart of a service request processing performed by a digital subscriber line access multiplexing device according to an embodiment of the present invention. detailed description

The embodiment of the present invention provides a policy decision function entity, a home gateway, a service quality control method, and a system, and dynamically configures QoS resources of a user terminal to solve multiple service resources of multiple users in a same home network or different services of multiple users. Resource optimization allocation problem, to achieve effective and full use of QoS resources in the home network.

It should be noted that the policy decision function entity provided by the embodiment of the present invention may be implemented by a single policy decision unit, or implemented by a central policy decision unit, or integrated in an access node by a local policy decision unit. The policy decision unit may be implemented by a policy server when the specific implementation is implemented, or may be implemented by using an AAA server. When implemented by the AAA server, the policy decision unit is used to deliver a charging related policy rule to the switching device.

Referring to FIG. 2, it is a schematic structural diagram of a first embodiment of a quality of service control system according to an embodiment of the present invention.

The service quality control system provided by the embodiment of the present invention includes:

The policy decision function entity 1 and the home gateway 2, the policy decision function entity 1 performs authorization and decision under the trigger of the service request, and determines the service corresponding to the service request according to the service identifier carried in the service request. a quality of service policy rule (QoS policy rule), and sending the determined quality of service policy rule to the home gateway 2;

After receiving the QoS policy rule, the home gateway 2 needs to convert the QoS policy rule into a home when the QoS policy rule is not converted into a QoS policy rule of the bearer layer in the home network. A quality of service policy rule of the bearer layer in the network, and executing the converted quality of service policy rule.

The system also includes:

The access device 3, that is, the switching device on the service path of the access network to the home gateway, specifically an edge switching device (such as a BAS device, an SBC device), an aggregation switch or a digital subscriber line access multiplexing (DSLAM, Digital) The Subscriber Line Access Multiplexer device is configured to receive the quality of service policy rule sent by the policy decision function entity 1 and forward the quality of service policy rule to the home gateway 2.

The system also includes:

a location server 4, configured to manage location information of the home gateway 2 and the access device 3, And providing the location information to the policy decision function entity 1 to enable the policy decision function entity 1 to send the quality of service policy rule to the home gateway 2 or the access device 3.

Specifically, after the service request triggering, the policy decision function entity 1 first determines the service quality policy rule corresponding to the service requested by the service request, and obtains the service allocation requested by the service request in the location server 4 The location of the home gateway 2 of the quality of service resource is directly delivered to the home gateway 2 according to the location information, and the manner in which the policy decision function entity directly sends the service quality policy rule to the home gateway is called concentration. Strategy delivery mechanism;

The policy decision function entity 1 may also first deliver the QoS policy rule to the access device 3, and then forward the QoS policy rule to the home gateway 2 by the access device 3; this method is called a distributed policy delivery mechanism. .

The home gateway 2 receives the quality of service policy rule from the policy decision function entity 1, when the quality of service policy rule is not converted into the quality of service policy rule of the bearer layer in the home network, the home gateway 2 according to different service types, user type After the service quality policy rule is converted into the quality of service policy rule of the bearer layer in the home network, the home gateway 2 performs the service quality of service policy rule again.

As an implementation manner, the access device 3 that forwards the QoS policy rule to the home gateway 2 may also implement the QoS policy rule, and the embodiment of the present invention implements dynamic QoS control on the home gateway 2, Dynamic QoS control of the access device 3 to the home gateway 2 path is achieved.

When the home gateway 2 fails to perform the QoS policy rule, or the access device 3 fails to perform the QoS policy rule, the home gateway 2 and the access device 3 respectively respond to the policy decision function entity 1 to notify that the execution of the QoS policy rule fails. The message, the policy decision function entity 1 determines the service requested by the service or rejects the service request according to the service quality policy rule execution result. When the QoS policy rule is successfully executed, the service is allowed, otherwise the service is rejected.

The system for dynamic quality of service control in the home network provided by the embodiment of the present invention does not require the home gateway to pre-configure the service quality policy rule, but is based on the service request, and the policy decision function entity performs authorization and decision according to the service request. The service identifier determines the quality of service policy rule corresponding to the service requested by the service request, and then is sent to the home gateway to perform the dynamic QoS control problem.

FIG. 3 is a schematic structural diagram of a second embodiment of a quality of service control system according to an embodiment of the present invention.

The quality of service control system includes: The policy decision function entity 1 and the home gateway 2, the policy decision function entity 1 authorizes and decides on the QoS policy rule request sent by the home gateway 2, and the home gateway location carried in the request according to the QoS policy rule request The information, the home gateway identifier, and the terminal identifier determine a service quality policy rule corresponding to the service controlled by the home gateway 2, and send the service-related service quality policy rule controlled by the home gateway 2 to the home gateway 2;

After receiving the QoS policy rule, the home gateway 2 converts the QoS policy rule into a home network when the QoS policy rule is not converted into a QoS policy rule of the bearer layer in the home network. The quality of service policy rule of the inner bearer layer, and the converted quality of service policy rule is executed.

It should be noted that the QoS policy rule request may also be sent by the home gateway configuration unit 5 to the policy decision function entity 1, and the home gateway configuration unit 5 is a functional unit of the NACS system in the NGN architecture, and is used for the home gateway firewall. The configuration may also be used as a means for the trigger policy decision function entity 1 to send a service quality policy rule to the home gateway 2 in the embodiment of the present invention.

The QoS policy rule request sent by the home gateway 2 or the home gateway configuration unit 5 to the policy decision function entity 1 carries the location information of the home gateway 2, the home gateway identifier, and the terminal identifier. It should be noted that the home gateway 2 can manage multiple user terminals, and each user terminal can request multiple different types of services. The terminal identification can obtain multiple service quality policies corresponding to different types of services from the policy decision function entity 1. The rule that the home gateway 2 can obtain the service quality policy rule corresponding to the service requested by all the user terminals managed by the home gateway 2 from the policy decision function entity 1.

The policy decision function entity 1 performs authorization and decision under the trigger of the quality of service policy rule request of the home gateway 2 or the home gateway configuration unit 5; the service quality policy rule requests the service decision service controlled by the home gateway 2 The quality policy rule identifies the home network where the home gateway is located according to the home gateway identifier, and then sends the service quality policy rule of the service controlled by the home gateway 2 to the home gateway 2 according to the location information.

The policy decision function entity 1 may further forward the quality of service policy rule to the home gateway through the home gateway configuration unit 5, and the home gateway configuration unit 5 receives the service from the policy decision function entity 1 as a local policy decision unit. The quality policy rules are then forwarded to the home gateway 2.

FIG. 4 is a schematic structural diagram of a policy decision function entity according to an embodiment of the present invention. The policy decision function entity 1 provided by the embodiment of the present invention includes:

The policy decision unit 11 is configured to perform authorization and decision on the service request, and determine a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request; the service request is initiated by the user terminal, And forwarded by the application server or multicast control unit to the policy decision function entity. The service request carries a service identifier, which is used to identify a service type. The service type includes a unicast service request, a multicast service request, and a high-speed Internet service, a voice service, and the like.

The policy sending unit 12 is configured to send the QoS policy rule determined by the policy decision unit 11 to the home gateway.

The quality of service policy rules include a service type, a service identifier, a service bandwidth resource, a service priority, and a service rate.

The policy sending unit 12 is configured to send a quality of service policy rule directly to the home gateway or to the home gateway via the access device.

The policy sending unit 12 is further configured to send a service quality policy rule for releasing the quality of service resource to the home gateway, when the policy decision unit 11 receives the service exit request initiated by the user terminal or the normal offline call. .

The policy decision function entity 1 further includes:

The location obtaining unit 13 is configured to obtain the location information of the home gateway from the location server, and obtain the location information of the access device from the location server when forwarding the service quality policy rule to the home gateway by using the access device;

The policy sending unit 12 sends the QoS policy rule to the home gateway according to the location information acquired by the location acquiring unit 13, or by using the distributed policy sending mechanism to the access device. And sending the quality of service policy rule, and then the access device forwards the quality of service policy rule to the home gateway.

The policy decision function entity 1 further includes:

The response receiving unit 14 is configured to receive an execution result of the quality of service policy rule from the home gateway or the access device;

The service processing unit 15 is configured to allow or reject the service requested by the service request according to the execution result. Specifically, when the QoS policy rule is successfully executed, the service is allowed, otherwise the service is rejected.

Referring to FIG. 4, a second embodiment of a policy decision function entity provided by an embodiment of the present invention is illustrated. The policy decision function entity provided by the embodiment of the present invention includes:

The policy decision unit 11 performs authorization and decision on the QoS policy rule request sent by the home gateway, and determines the home gateway control information according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the QoS policy rule request. The service quality policy rule corresponding to the service; the service quality policy rule request may be sent by the home gateway or by the home gateway configuration unit.

The policy sending unit 12 is configured to send the quality of service policy rule determined by the policy decision unit 11 to the home gateway.

When the QoS policy rule request is sent by the home gateway, the policy decision unit 11 determines a corresponding QoS policy rule for all services controlled by the home gateway requested by the QoS policy rule, and the policy is sent. Unit 12 transmits the quality of service policy rules to the home gateway.

When the QoS policy rule request is sent by the home gateway configuration unit, the policy decision unit 11 determines a QoS policy rule corresponding to all services controlled by the home gateway related to the home gateway configuration unit, where the policy is sent. The unit 12 forwards the quality of service policy rule determined by the policy decision unit 11 to the home gateway through the home gateway configuration unit.

The policy sending unit 12 is further configured to send a service quality policy rule for releasing the quality of service resource to the home gateway, when the service exit request is initiated by the user terminal or the normal offline.

The policy decision function entity 1 further includes:

The location obtaining unit 13 is configured to obtain the location of the home gateway according to location information of the home gateway carried in the service quality policy rule request.

The receiving unit 14 is configured to receive an execution result of the quality of service policy rule from the home gateway;

The service processing unit 15 is configured to allow or reject the service controlled by the home gateway according to the execution result.

FIG. 5 is a schematic structural diagram of a home gateway according to an embodiment of the present invention.

The home gateway provided by the embodiment of the present invention includes:

The policy decision unit 21 is configured to obtain a QoS policy rule from the policy decision function entity, and convert the QoS policy rule that is not converted into the bearer layer in the home network into a QoS policy rule of the bearer layer in the home network, and notify the policy The execution unit executes the quality of service policy rule; Legality, and report the QoS resource usage to the policy decision function entity. When an exception occurs, such as insufficient QoS resources, policy rules are invalid, or a policy rule corresponding to a certain service is missing, an abnormal situation is reported to the policy decision function entity. The policy decision unit is a local policy decision unit, and the policy decision unit can be configured to convert the quality of service policy rules from the policy server into corresponding service quality policy rules of the home network bearer layer.

The policy execution unit 22 is configured to execute the quality of service policy rule sent by the policy decision unit 21. It should be noted that, after receiving the QoS policy rule for releasing the QoS resource sent by the policy decision function entity, the policy decision unit 21 notifies the policy execution unit 22 to release the related QoS resource; Unit 22 then releases the associated quality of service resources.

The home gateway further includes:

The policy requesting unit 20 is configured to send a QoS policy rule request to the policy decision function entity, where the QoS policy rule request carries the home gateway location information, the home gateway identifier, and the terminal identifier.

The policy response unit 23 is configured to send, to the policy decision function entity, a result of the policy execution unit 22 executing the quality of service policy rule.

The dynamic QoS control in the home network provided by the embodiment of the present invention is divided into the following three manners according to the service request type:

1. Unicast service dynamic QoS control;

The unicast service request triggering policy decision function entity sends a QoS policy rule to the home gateway, and the trigger policy decision function entity sends a service quality policy to an access device such as an edge switch, an aggregation switch, or a DSLAM switch on the home gateway service path. rule.

2. Dynamic multicast service QoS control;

The main function is that the multicast service request triggering policy decision function entity sends a service quality policy rule to the policy decision unit of the home gateway, and triggers the policy decision function entity to access the edge switch, the aggregation switch, the DSLAM switch, and the like on the home gateway service path. Send a quality of service policy rule.

3. Dynamic QoS control of other services;

Other services mainly refer to services other than IPTV, and may include high-speed Internet access services, voice services, etc. For these services, the policy decision function entity sends the service quality policy rules of the service to the home gateway.

FIG. 6 is a schematic flowchart of a first embodiment of a method for controlling quality of service according to an embodiment of the present invention. Figure.

The service quality control method provided by the embodiment of the present invention includes:

Step 100: Receive a service quality request rule request sent by a service request or a home gateway or a home gateway configuration unit.

The service request carries a service identifier, where the service quality policy rule request carries the home gateway location information and the home gateway identifier;

Step 101: Perform authorization and decision on the service request, and determine a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request; or the service quality policy rule requests authorization and Determining, according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the request for the service quality policy rule, determining a service quality policy rule corresponding to the service controlled by the home gateway;

Step 102: Send the determined quality of service policy rule to a home gateway that allocates quality of service resources for the service request.

Step 103: The home gateway obtains a quality of service policy rule from a policy decision function entity, and converts the service quality policy rule into a home when the service quality policy rule is not converted into a service quality policy rule of a bearer layer in the home network. The quality of service policy rules of the bearer layer in the network;

Step 104: The home gateway executes the quality of service policy rule.

Step 105: The home gateway feeds back the execution result of the execution quality of service policy rule to the policy decision function entity.

FIG. 7 is a schematic flow chart of a second embodiment of a method for controlling quality of service according to an embodiment of the present invention.

The embodiment of the invention provides a method for controlling quality of service under unicast service request. In this embodiment, the Customer Premises Network (CPN) is composed of a plurality of user terminals and a home gateway, and the home gateway is composed of two units, one is a policy decision unit of the home gateway, and is used for receiving the policy decision function. An entity quality of service policy rule, when the quality of service policy rule is not converted into a quality of service policy rule of a bearer layer in a home network, the service quality policy rule is also converted into a service quality policy rule of a bearer layer in the home network. The other unit is the policy enforcement unit of the home gateway, responsible for packet classification, marking, shaping, queue scheduling, and congestion control on the data plane. The home gateway is interconnected with multiple user terminals, responsible for different services of each user terminal, and dynamic QoS control and management of different services of a single user terminal. Before the terminal acquires service data, the QoS resources obtained by each user terminal are zero. When the user terminal issues a unicast service request, once the service request from the user terminal is accepted by the application server, the application server triggers the policy decision function entity (implemented in the embodiment with the policy server) to authorize the service request and Determining, according to the service identifier carried in the service request, determining a service quality policy rule corresponding to the service requested by the service request, where the policy server uses an interface with a policy decision unit of the home gateway to deliver the message to the home gateway The service quality policy rule of the service requested by the service request. The QoS policy rule may include a service type, a service identifier, a service bandwidth resource, a service priority, a service rate, and the like. The delivery of the QoS policy rules is divided into two modes, one is a centralized policy delivery mechanism, and the other is a distributed policy delivery mechanism.

The centralized policy is delivered by the policy server to the home gateway to directly deliver the service quality policy rule of the service requested by the service request according to the QoS requirement of the service. As an implementation manner, the policy server may also provide the access device. Issue the corresponding service quality policy rules.

The distributed policy delivery mechanism is configured by the policy server to deliver the service quality policy rule of the service requested by the service request to the home gateway through the access device, where the access device (for example, the access switch device) serves as a local The policy decision unit is responsible for receiving the policy from the policy server, configuring the corresponding local quality of service policy rule, and forwarding the local quality of service policy rule to the downstream switch device or the home gateway. In a distributed policy delivery mechanism, an access device (such as a DSLAM device) can identify a home and a user based on a VLAN tag. When a user belonging to a DSLAM requests a service, the policy server can deliver all the user service quality policy rules of the same DSLAM switching device to the DSLAM. The distributed policy delivery mechanism can also be applied to the QoS control of the core network. For example, the policy server sends the corresponding quality of service policy rules to the switch devices in the core network through the border gateway (BGF). As a local policy decision unit, the border gateway receives the policy rules from the policy server, notifies the local policy enforcement unit to execute the policy rules, and forwards the policy rules from the policy server to the core network switch device. Figure 7 below shows the centralized service policy delivery. The specific steps are as follows:

Step 200: The user terminal sends a unicast service request to the application server, where the request may carry the service identification information and the QoS parameter of the service.

Step 201: The application server initiates an authorization request to the policy server according to the service identifier information. Step 202: The policy server performs authorization and decision on the service request, and determines a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request. Then, the location management function (LMF, Location Management Function) (equivalent to the location server) acquires location information of the home gateway that allocates the quality of service resource for the unicast service requested by the unicast service request.

Step 203: The policy server sends a quality of service policy rule (QoS policy rule) to a policy decision unit (HPDF) of the home gateway of the network where the user is located according to the location information of the home gateway.

At step 204, the policy decision unit notifies the policy enforcement unit to execute the quality of service policy rules. The result of the execution, that is, the policy rule install/uninstall reply message, which contains the result of the service quality policy rule installation/uninstallation, which can be successful or failed.

At step 206, the policy decision unit of the home gateway returns the execution result to the policy server;

At step 207, the policy server returns an authorization request reply message to the application server.

In step 208, the application server returns a unicast service request reply message. When the authorization is successful, the application server allows the service, otherwise the service is rejected.

In step 209, the home gateway periodically reports the service resource usage information to the policy server.

In the dynamic QoS centralized control of the unicast service, the policy server PDF not only needs to issue corresponding service quality policy rules for the home gateway in the access network, but also needs to access the access device in the access network to the home gateway path, for example The edge switching device, the aggregation switching device, and the DSLAM device deliver corresponding service quality policy rules. The location of the home gateway and the location of the access device may be obtained by querying the location management unit, and the location management unit is a network in the NGN architecture. Attachment Control System The NACS location management unit, which can save the topology structure of the terminal accessing the network when the user accesses. When the user terminal exits the service, the policy server may send a service exit request to the policy server, and the policy server sends a service quality policy rule for releasing the service quality resource to the home gateway, and sends the release service quality resource to the access device. The service quality policy rule is implemented by the policy server to the home gateway. The policy is mainly implemented through the policy decision unit interface between the home gateway and the policy server.

FIG. 8 is a schematic flow chart of a third embodiment of a method for controlling quality of service according to an embodiment of the present invention.

In the embodiment of the present invention, a flow of a service quality control method in a distributed policy delivery mechanism is provided. In the distributed application scenario, the functions of the policy decision function entity respectively pass through the access device. The local policy decision unit and the central policy decision unit of the policy server are implemented. The local policy decision unit in the access device is responsible for resource admission control of all the home gateways, and actively delivers the service quality policy rule to the home gateway or forwards the policy server. The quality of service policy rules are given to the home gateway.

In addition, the local policy decision unit in the access device can be deployed in all devices in the entire network to receive policies from policy servers or other local policy decision units, and can also be used to enforce policy rules from the policy server. Convert to the quality of service policy rules of the bearer layer in the home network, and forward the corresponding quality of service policy rules after the conversion. The central policy decision unit located in the policy server is responsible for resource admission control of the edge switch device and the DSLAM, and the edge switch device can aggregate the quality of service resources. When the access device is specifically implemented, it is connected to a Layer 2 switching device (such as a DSLAM). The specific steps are as follows:

Step 300: The user terminal sends a unicast service request to the application server, where the request may carry the service QoS requirement and the user service identifier information.

Step 301: The application server initiates a service authorization request to the policy server according to the user service identifier information.

Step 302: The policy server performs authorization and decision on the unicast service request, and determines a service quality policy rule corresponding to the unicast service requested by the unicast service request according to the service identifier carried in the unicast service request, and then Obtaining home gateway location information and access device location information from a location management unit (location server);

Step 303: The policy server sends a service quality policy rule to the access device. The quality of service policy rules here can be part of the configuration of the access device and another part of the configuration of the home gateway. The policy server can deliver all the user service quality policy rules of the same access device to the access device at one time.

Step 304: The access device sends a QoS policy rule to the policy decision unit in the home gateway of the network where the user is located. Optionally, the access device further converts the QoS policy rule from the policy server into the QoS policy rule of the bearer layer. And then forward the quality of service policy rules from the policy decision function entity to the home gateway. When the policy server sends the service quality policy rules of all the users of the same access device to the access device, the access device can also send the service quality policy rules of the different home gateways to the corresponding home gateway.

Step 305: When the policy rule from the policy server is not converted to the quality of service policy of the bearer layer In the rule, the policy decision unit of the home gateway converts the corresponding quality of service policy rule into the quality of service policy rule of the bearer layer, and then the family policy decision unit notifies the family policy execution unit to execute the quality of service policy rule. The result of the execution, which includes the result of the installation/uninstallation of the quality of service policy rule, which may be successful or failed.

Step 307: The policy decision unit of the home gateway returns a service quality policy rule execution result to the local policy decision unit of the access device.

Step 308: The access device returns a service quality policy rule execution result to the central policy decision unit of the policy server.

Step 309: The policy server returns an authorization request reply message to the application server.

Step 310: The application server returns a unicast service request reply message. When the QoS policy is successfully executed, the application server allows the unicast service to request the requested service, otherwise rejects the service requested by the unicast service request.

Step 311: The home gateway reports the service resource usage information to the policy server.

In the dynamic QoS distributed control of the unicast service, the policy server first sends the corresponding service quality policy rule to the access device, and then the access device sends the corresponding service quality policy rule for the home gateway in the access network. The location of the home gateway and the location of the access device on the home gateway path can be obtained by querying the location management unit, which is a location management unit in the network attachment control system NACS in the NGN architecture, and the unit can be accessed at the user. The topology diagram of the access terminal in the access network is saved. At the same time, when the user terminal exits the service, the service server may also send a service exit request to the policy server, and the policy server is released to release the service quality policy rule determined by the home gateway, and the service quality policy rule determined for the access device. The policy server sends the policy to the home gateway mainly through the local policy decision unit located in the access device, that is, the local policy decision unit of the access device sends the service from the policy server to the policy decision unit of the home gateway. Quality policy rules. Compared with the centralized service policy delivery, the distributed service policy is deployed to reduce the burden on the policy server and achieve load balancing.

FIG. 9 is a schematic flow chart of a fourth embodiment of a method for controlling quality of service according to an embodiment of the present invention.

The embodiment of the invention provides a service quality control method under the request of a multicast service. In this embodiment, the home network CPN is composed of multiple user terminals and one home gateway, and the quality of service policy control function of the home gateway is composed of two units, one is a policy decision unit of the home gateway, and is responsible for receiving the function entity from the policy service. The quality of service policy rules, the notification policy enforcement unit performs the quality of service policy rules. The other unit is the policy enforcement unit of the home gateway, which is responsible for executing the corresponding quality of service policy rules, as well as message classification, marking, shaping, queue scheduling, and congestion control on the data plane. The home gateway is interconnected with a plurality of user terminals, and is responsible for different services of the user terminals and service quality control and management of different services of the individual user terminals. Before the terminal obtains the service data, the quality of service resources obtained by each user terminal is zero. The multicast control unit accepts the multicast service request, and determines whether the user has the right to view the multicast data according to the user subscription information multicast permission table. The multicast control unit can be located on the DSLAM switching device or on an edge device such as a BRAS switch. The location management unit is a location management unit in the network attachment control system NACS in the NGN architecture, and the unit can save the topology structure of the terminal in the access network when the user accesses. Once the service request from the user terminal is accepted by the multicast control unit, the multicast control unit triggers the policy decision function entity (implemented by the policy server in this implementation) to determine the quality of service policy rule for the service requested by the service request, the policy server A quality of service policy rule for the service requested by the service request is sent to the home gateway using an interface with a policy decision unit of the home gateway. The implementation steps are as follows:

Step 400: The user terminal sends a multicast service request to the multicast control unit, where the request may be a service join request or a service exit request.

Step 401: The multicast control unit sends a service authorization request to the policy server.

Step 402: The policy server performs authorization and decision on the multicast service request, and determines a service quality policy rule corresponding to the multicast service requested by the multicast service request according to the service identifier carried in the multicast service request, and then The policy server obtains the home gateway location information from the location management unit. Step 403: The policy server delivers the service quality policy rule to the access device (such as a DSLAM) through an interface with the policy decision unit in the access device.

Step 404: The policy server sends a quality of service policy rule to the home gateway of the network where the user is located to allocate the quality of service resource for the service requested by the multicast service request.

Step 405: The policy decision unit of the home gateway notifies the execution unit of the home gateway to execute the quality of service policy rule.

Step 406: The policy execution unit of the home gateway returns the execution result of the service quality policy rule, that is, the service quality policy rule installation/uninstallation reply message, to the policy decision unit of the home gateway. Step 407: The policy decision unit of the home gateway returns a service quality policy rule execution result, that is, a quality of service policy rule install/uninstall reply message, to the policy server.

Step 408: The policy server sends a service authorization reply message to the multicast control unit.

Step 409: The multicast control unit sends a multicast service request reply message to the user terminal.

In the dynamic QoS centralized control of the multicast service, the policy server PDF not only needs to deliver corresponding service quality policy rules for the home gateway in the access network, but also needs to access the access device in the access network to the home gateway path, for example The aggregation switching device and the DSLAM device issue corresponding service quality policy rules. For the location of the home gateway, and the access device to the home gateway path, such as an aggregation switching device, the DSLAM device can be obtained by querying the location management unit. At the same time, when the user terminal exits the service, the service server may send a service exit request to the policy server to trigger the policy server to send the service quality policy rule for releasing the service quality resource to the home gateway, and the aggregation exchange on the path to the home gateway in the access network. The device and the DSLAM device issue corresponding service quality policy rules. The policy server's policy delivery to the home gateway is mainly through the policy decision unit interface between the home gateway and the policy server.

The following provides a method for dynamic QoS control of multicast services in several deployment scenarios.

Referring to FIG. 10, it is a schematic flowchart of a fifth embodiment of a method for controlling quality of service according to an embodiment of the present invention.

In the embodiment of the present invention, a first deployment scenario of a method for controlling quality of service of a multicast service is provided. In this scenario, a multicast service control point and a multicast service replication point are located in an access device (as shown in the group). Broadcast control unit), for example, on a Layer 2 access switching device. At the same time, the access device also supports the local resource control management function, which is implemented by the local resource management unit of the access device, and the policy server supports the central resource control management function, and is implemented by the central resource management unit. When the user terminal sends a multicast service request, the request is first intercepted by the multicast control unit of the access device, and the multicast service request is obtained through an interface between the access device and the central resource management unit between the policy server. Forward to the policy server. The specific process is as follows:

Step 500: The user terminal sends a multicast service request to the multicast control unit located in the access device, where the request may be a service join request or a service exit request.

Step 501: The multicast control unit located in the access device forwards the multicast service request to the local resource management unit.

Step 502: The local resource management unit located in the access device utilizes the access device and the policy server. The interface of the central resource management unit in between, forwards the multicast service request.

Step 503: The policy decision unit of the policy server receives a service authorization request sent by a centrally managed resource management unit (C-RMF) in the policy server, and performs authorization and decision on the multicast service request according to the group. The service identifier carried in the request for the broadcast service determines the quality of service policy rule (QoS policy rule) corresponding to the multicast service requested by the multicast service request. The central resource management unit here can also be separated from the policy server and exist separately.

Step 504: The policy server acquires location information of the home gateway from the location management unit.

Step 505: The policy server delivers the service quality policy rule to the home gateway of the network where the user is located to allocate the quality of service resource for the service requested by the multicast service request.

Step 506: The policy decision unit of the home gateway notifies the policy execution unit of the home gateway to execute the quality of service policy rule. The result of the execution, that is, the quality of service policy rule install/uninstall reply message.

Step 508: The policy decision unit of the home gateway returns the execution result of the service quality policy rule to the policy server, that is, the service quality policy rule install/uninstall reply message.

Step 509: The policy server sends an authorization reply message to the multicast service request of the central resource management unit of the policy server.

Step 510: The central resource management unit located in the policy server sends a reply message of the multicast service request to the local resource management unit located in the access device.

Step 511: The local resource management unit located in the access device forwards the reply message of the multicast service request to the multicast control unit.

Step 512: The multicast control unit located in the access device sends a reply message of the multicast service request to the user terminal.

Referring to FIG. 11, a flowchart of a sixth embodiment of a method for controlling quality of service according to an embodiment of the present invention is shown.

In the embodiment of the present invention, a second deployment scenario of the method for controlling the quality of service of the multicast service is provided. In the second scenario, the multicast control point and the multicast replication point are the same as the first scenario. In the access device (such as DSLAM) location, the difference is that the access device (DSLAM) does not support resource management functions, but supports local policy decision functions, implemented by local policy decision units. The policy server supports the central policy decision function, which is implemented by the central policy decision unit in the embodiment of the present invention. The policy rules for all access devices in their domain are sent. When the user terminal sends a multicast service request, the request is first intercepted by the multicast control unit of the access device, and then forwarded to the central policy decision unit of the policy server through the access device and the policy. The specific process is as follows:

Step 600: The user terminal sends a multicast service request to the multicast control unit, where the request may be a service join request or a service exit request.

Step 601: The multicast control unit located in the access device forwards the multicast service request to a local policy decision unit located in the access device.

Step 602: The local policy decision unit in the access device sends a service authorization request to the policy server.

Step 603: The policy server performs authorization and decision on the multicast service request, and determines a service quality policy rule (QoS) corresponding to the multicast service requested by the multicast service request according to the service identifier carried in the multicast service request. After the policy rule), the location information of the home gateway and the location information of the access device are obtained from the location management unit.

Step 604: The policy server sends a service quality policy rule to an access device (for example, a DSLAM device) of the network where the user is located according to the service request message. Here, the policy server can deliver all the user service quality policy rules belonging to the same DSLAM device to the DSLAM device at one time.

Step 605: The local policy decision function in the access device sends a service quality policy rule to the home gateway of the network where the user is located. The QoS policy rule may be that the DSLAM sends the policy to the home gateway actively, or the DSLAM forwards the policy rule from the policy server to the home gateway. When the policy server sends the QoS policy of all the users of the same DSLAM device to the DSLAM switching device at one time, the DSLAM switching device can also send the QoS policy of each home gateway to the corresponding home gateway.

Step 606: The policy decision unit of the home gateway notifies the policy execution unit of the home gateway to execute the quality of service policy rule.

Step 607: The policy execution unit of the home gateway returns the execution result of the service quality policy rule, that is, the service quality policy rule install/uninstall reply message, to the policy decision unit of the home gateway.

Step 608: The policy decision unit of the home gateway returns the execution result of the service quality policy rule to the local policy decision unit of the access device, that is, the service quality policy rule install/uninstall reply message.

Step 609: The access device returns a quality of service policy rule to the central policy decision unit of the policy server. The result of the execution, that is, the quality of service policy rule install/uninstall reply message.

Step 610: The policy server sends a service authorization reply message to the local policy decision unit.

Step 611: The local policy decision unit located in the access device sends a multicast service reply message to the multicast control unit.

Step 612: The multicast control unit located in the access device sends a multicast service request reply message to the user terminal.

Referring to FIG. 12, it is a schematic flowchart of a seventh embodiment of a service quality control method according to an embodiment of the present invention.

In the embodiment of the present invention, a third deployment scenario is provided for the method for controlling the quality of service of the multicast service. In the third scenario, the same point as the first scenario is that the multicast control point and the multicast replication point are located. Access device location (as shown in the multicast control unit), and unlike the first and second scenarios, the access device includes not only the local policy decision unit but also the local resource management unit. The policy decision function entity (implemented by the policy server in the embodiment of the present invention) supports the central resource management function (implemented by the central resource management unit) and the policy decision function (in the central policy decision unit). When the user terminal sends a multicast service request, the request is first intercepted by the multicast control unit located at the access device, and then through an interface between the resource control unit between the access device (such as a DSLAM device) and the policy server, The multicast service request is forwarded to the central policy decision unit of the policy server. The policy server authorizes and determines the multicast service request, and determines the service quality policy rule corresponding to the service requested by the multicast service request, and the policy server first delivers the local policy decision unit corresponding to all the access devices. The QoS policy rule is then forwarded by the access device to all the home gateways of the subordinate to the QoS policy related to the multicast service requested by the multicast service request. The specific process is as follows:

Step 700: The user terminal sends a multicast service request to the multicast control unit located in the access device, where the request may be a service join request or a service exit request.

Step 701: The multicast control unit located in the access device forwards the service request to the local resource control management unit.

Step 702: The resource management unit located in the access device sends the multicast service request to a central resource management unit in the policy server.

Step 703: The central resource management unit located in the policy server sends a service authorization request to the central policy decision unit in the policy server. Step 704: The central policy decision unit of the policy server performs authorization and decision on the multicast service request, and determines the service quality of the multicast service requested by the multicast service request according to the service identifier carried in the multicast service request. The policy rule, the policy server acquires location information of the home gateway and the location information of the access device for allocating the quality of service resource for the multicast service requested by the multicast service request to the location management unit.

Step 705: The policy server sends a service quality policy rule to the access device of the home network where the user terminal is located. The policy server can send all the user service quality policy rules belonging to the same access device to the access device at one time. This can be done through the interface between the policy server and the local policy decision unit in the access device, or through the interface with the local resource management unit in the access device.

Step 706: The access device sends a quality of service policy rule to the home gateway of the home network where the user is located. The QoS policy rule may be that the access device actively sends the QoS policy rule to the home gateway, or the access device forwards the QoS policy rule from the policy server to the home gateway. When the policy server sends the QoS policy of all the users of the same access device to the access device, the access device can also send the QoS policy rules of the different home gateways to the corresponding home gateway. At the same time, the local policy decision unit in the access device sends a resource initialization message to the local resource management unit in the access device, and delivers the service quality policy rule.

Step 707: The policy decision unit of the home gateway notifies the policy execution unit of the home gateway to execute the quality of service policy rule. Then execute the result, that is, the service quality policy rule install/uninstall reply message;

Step 709: The policy decision unit of the home gateway sends a service quality policy rule execution result, that is, a service quality policy rule install/uninstall reply message, to the local policy decision unit located in the access device.

At the same time, the local resource management unit in the access device sends a service quality policy rule execution result, that is, a QoS policy rule installation/uninstall reply message, to the local policy decision unit of the access device; Step 710, local in the access device The policy decision unit returns a service quality policy rule execution result to the policy server, that is, a quality of service policy rule install/uninstall reply message;

Step 711: The central policy decision unit of the policy server sends a service authorization reply message to the central resource management unit of the policy server.

Step 712: The central resource management unit in the policy server goes to the local resource management device located in the access device. The unit sends a reply message.

Step 713: The local resource management unit located in the access device forwards the service reply message to the multicast control unit.

Step 714: The multicast control unit located in the access device sends a multicast service request reply message to the user terminal.

Referring to FIG. 13, a flow chart of an eighth embodiment of a method for controlling quality of service according to an embodiment of the present invention is shown.

In the embodiment of the present invention, a fourth deployment scenario is provided for the method for controlling the quality of service of the multicast service. In the fourth scenario, the same point as the third scenario is the multicast control point and the multicast replication point. The multicast control unit shown in the figure is located in the access device (for example, a DSLAM device), and unlike the third scenario, the multicast service request is independently controlled by the local policy decision unit in the access device, The policy decision function entity is implemented (the embodiment of the present invention is implemented by a policy server, including a central resource management unit and a central policy decision unit). The main purpose of this scenario is to shorten the setup time of multicast service sessions. The specific process is as follows:

Step 800: The user terminal sends a multicast service request to the multicast control unit located in the access device, where the request may be a service join request or a service exit request.

Step 801: The multicast control unit located in the access device forwards the multicast service request to the local resource management unit in the access device.

Step 802: The local resource management unit located in the access device sends a service authorization request to the local policy decision unit of the access device.

Step 803: The local policy decision unit located in the access device performs authorization and decision on the multicast service request, and determines, according to the service identifier carried in the multicast service request, the multicast service requested by the multicast service request. The quality of service policy rule, and obtaining, from the location management unit, location information of the home gateway that allocates the quality of service resource for the multicast service request.

Step 804: The access device sends a service quality policy rule to the home gateway in the home network where the user is located to allocate the quality of service resource for the multicast service request.

Step 805: The policy decision unit of the home gateway notifies the policy execution unit of the home gateway to execute the quality of service policy rule. The result of the rule execution, that is, the quality of service policy rule install/uninstall reply message. Step 807: The local policy decision unit located in the access device returns an execution result of the execution of the quality of service policy rule, that is, the quality of service policy rule installation/uninstallation reply message, to the local policy decision unit located in the access device.

Step 808: The local policy decision unit located in the access device sends a service authorization reply message to the local resource management unit in the access device.

Step 809: The local resource management unit located in the access device forwards the multicast service request reply message to the multicast control unit.

Step 810: The multicast control unit sends a multicast service request reply message to the user terminal.

Referring to FIG. 14, a flowchart of a ninth embodiment of a service quality control method according to an embodiment of the present invention is shown.

The present invention provides a method for quality of service control under high-speed Internet access, VOIP and other service requests. The service quality control method provided by this embodiment is also applicable to the multicast service and the unicast service. In this embodiment, the home network CPN is composed of multiple user terminals and one home gateway, and the home gateway is composed of two units, one is The policy decision unit of the home gateway is responsible for receiving the QoS policy rule from the policy decision function entity, and when the QoS policy rule is not converted into the QoS policy rule of the bearer layer in the home network, the QoS policy rule is Translating into a quality of service policy rule of the bearer layer in the home network, and notifying the policy execution unit to execute the converted quality of service policy rule. The other unit is the Gateway Policy Enforcement Unit, which is responsible for performing QoS policy rules and packet classification, marking, shaping, queue scheduling, and congestion control on the data plane. The home gateway is interconnected with a plurality of user terminals, and is responsible for different services of the user terminals and service quality resource control and management of different services of the individual user terminals. For other services such as Internet access and voice, the policy decision unit of the home gateway can directly request the service related to the home network control from the policy server through an interface with the policy decision function entity (implemented by the policy server in the embodiment of the present invention). The service quality policy rules are as follows:

Step 900: The policy decision unit of the home gateway directly sends a QoS policy rule request (QoS policy rule request) to the policy server by using an interface with the policy server, and requests a QoS policy rule corresponding to the service controlled by the home gateway.

Step 901: The policy server performs authorization and decision on the QoS policy rule request, and determines, according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the QoS policy rule request, the service corresponding to the home gateway control. Quality of service policy rules, and through The interface between the policy decision units of the gateway gateway sends the service quality policy rule corresponding to the service controlled by the home gateway to the home gateway.

Step 902: When the QoS policy rule from the policy server is not converted into a QoS policy rule of the bearer layer in the home network, the policy decision unit of the home gateway first converts the QoS policy rule into a bearer in the home network. The QoS policy rule of the layer, and then the policy execution unit of the home gateway is notified to execute the QoS policy rule.

Step 903: The policy execution unit of the home gateway returns an execution result of executing the service quality policy rule to the policy decision unit of the home gateway.

Step 904: The policy decision unit of the home gateway sends an execution result of executing the quality of service policy rule to the policy server.

Referring to FIG. 15, a flowchart of a tenth embodiment of a method for controlling quality of service according to an embodiment of the present invention is shown.

The policy decision function entity is implemented by a policy server in the embodiment of the present invention.

For other services, the embodiment of the present invention provides another process to implement quality of service control. In the embodiment of the present invention, the service quality policy rule request is sent to the policy decision function entity (implemented by the policy server in the embodiment of the present invention) by the home gateway configuration unit, where the home gateway configuration unit is a functional unit of the NACS system in the NGN architecture. The configuration of the home gateway firewall is mainly used as a means for triggering the policy decision function entity to send the service quality policy rule to the home gateway. The home gateway configuration unit, as a local policy decision unit, receives the quality of service policy rules from the policy server and then forwards them to the home gateway.

Specific steps are as follows:

In step 1000, the home gateway establishes a security trust relationship with the home gateway configuration unit. The secure trust relationship can be used to protect data messages that the home gateway interacts with the home gateway configuration unit. It should be noted that establishing a security trust relationship between the home gateway and the home gateway configuration unit is only one of the cases in which the home gateway configuration unit sends a service quality policy rule request, and the service quality policy is not limited by the home gateway configuration unit. All cases of rule requests.

Step 1001: The home gateway configuration unit sends a quality of service policy rule request to the policy server instead of the home gateway.

Step 1002: The policy server performs authorization and decision on the QoS policy rule request, and according to the home gateway location information and the home gateway identifier carried in the QoS policy rule request, The terminal identifier is a service quality policy rule corresponding to the service controlled by the home gateway, and returns a service quality policy rule to the local policy decision unit in the home gateway configuration unit.

Step 1003: The local policy decision unit of the home gateway configuration unit forwards the quality of service policy rule from the policy server to the policy decision unit of the home gateway.

Step 1004: The policy decision unit of the home gateway notifies the policy execution unit of the home gateway to execute the quality of service policy rule.

Step 1005: The policy execution unit of the home gateway returns to the policy decision unit of the home gateway, the execution result of the service quality policy rule, that is, the service quality policy rule installation/uninstall reply message.

Step 1006: The policy decision unit of the home gateway returns to the local policy decision unit of the home gateway configuration unit to execute the execution result of the service quality policy rule, that is, return the service quality policy rule installation/uninstall reply message.

Step 1007: The home gateway configuration unit returns to the policy server an execution result of executing the quality of service policy rule, that is, returning a quality of service policy rule installation/uninstallation reply message.

It should be noted that in other embodiments, the policy decision function entity may be implemented by a policy server. The home gateway configuration unit also forwards the quality of service policy rules from the policy server to the home gateway through an interface between the policy enforcement units in the home gateway. The specific process will not be described again.

When home networks provide multiple services, it is important to implement traffic management and QoS control in the home network. For example, the home network needs to ensure the performance of QoS-sensitive key services (such as VoIP), while avoiding excessive use of bandwidth by some applications (such as high-speed Internet services), resulting in performance degradation of other applications. Traffic management and QoS control are generally implemented through a home gateway and network-side access devices such as DSLAM and BRAS. The policy decision function entity (implemented by the policy server) assumes the role of issuing the service quality policy rule on the control plane, that is, the policy server needs to issue the service quality policy to the home gateway and the access device in the access network to the home gateway path respectively. The rule reserves the corresponding QoS resource for the user terminal that initiates the service request. After the user terminal exits the corresponding service, the policy server is also responsible for sending the service quality policy rule for releasing the quality of service resource to the home gateway.

There are various scheduling models for dynamic QoS control of the home gateway, such as user group scheduling model, home service scheduling model, and home hybrid scheduling model. A dynamic QoS control hybrid scheduling model embodiment of the home gateway is given below.

Referring to FIG. 16, a flowchart of an eleventh embodiment of a service quality control method according to an embodiment of the present invention is provided. Schematic.

In step 1100, the home gateway establishes a security trust relationship with the home gateway configuration unit. The secure trust relationship can be used to protect data messages that the home gateway interacts with the home gateway configuration unit. It should be noted that establishing a security trust relationship between the home gateway and the home gateway configuration unit is only one of the cases in which the home gateway configuration unit triggers the service quality policy rule request, and cannot limit the service quality policy triggered by the home gateway configuration unit. All cases of rule requests.

Step 1101: The home gateway configuration unit sends a service quality policy rule request to the policy server, where the request carries the home gateway location information and the home gateway identity information.

Step 1102: The policy server performs authorization and decision on the QoS policy rule request, determines a QoS policy rule (QoS policy rule) corresponding to the service of the user terminal managed by the home gateway, and then sends the decision to the policy decision unit of the home gateway. Quality of Service Policy Rules.

Step 1103: When the QoS policy rule determined by the policy server is not converted into a QoS policy rule of the bearer layer in the home network, the policy decision unit of the home gateway converts the QoS policy rule into a bearer in the home network. The layer's quality of service policy rules, and the home gateway execution unit executes the quality of service policy rules.

Step 1104: After executing the quality of service policy rule, the policy decision unit of the home gateway returns to the policy server the execution result of the service quality policy rule, that is, the service quality policy rule installation/uninstallation reply message.

FIG. 17 is a schematic flowchart of processing a service request by a home gateway according to an embodiment of the present invention. In this embodiment, the process of processing the service request by the home gateway is as follows:

Step 1200: The home gateway policy decision unit receives the quality of service policy rule from the policy server.

Step 1201: Determine whether the QoS policy rule is a QoS policy rule for the home gateway to release the QoS resource. If yes, go to step 1202, reclaim the bandwidth resource, and uninstall the QoS policy rule. If not, go to step 1203.

Step 1203: Determine whether the user type is a fixed bandwidth user or a variable bandwidth privileged user.

If it is determined that the user type is a variable bandwidth privileged user, proceed to step 1204;

Step 1204: Determine whether the total bandwidth available to the home gateway is greater than the service request bandwidth. If the bandwidth is greater than the service application bandwidth, go to step 1205 to execute the service quality policy rule, that is, directly install the service. Quality policy rules. If the bandwidth is smaller than the service request, the process proceeds to step 1206, where the existing bandwidth of the home gateway is added to the service request bandwidth, and then the bandwidth of the service request is allocated from the available bandwidth, and then, in step 1207, the home gateway installs the quality of service policy. rule.

If it is determined in step 1203 that it is a fixed bandwidth user, the process proceeds to step 1208;

Step 1208: Determine whether the user group type and the user type are normal user groups. If the user group type is a privileged user group, such as a dedicated user group or a privileged user, such as a voice user, go to step 1209, and if it is a normal user group, go to Step 1210;

Step 1209: For the privileged user group, check the remaining bandwidth resources, and determine whether the available bandwidth resources are sufficient for the service. If yes, go to step 1211 to install the corresponding quality of service policy rule for the service; if not, then in step 1212, determine whether the adjustment of the low priority bandwidth resource budget is successful? If yes, go to step 1213 to install the corresponding quality of service policy rules for the service. If no, go to step 1214 to maintain the existing bandwidth and alert the home gateway;

If it is determined in step 1208 that it is a normal user group, then the process proceeds to step 1210. In step 1210, it is determined whether the user type is an ordinary user. If yes, the process proceeds to step 1215 to determine whether the available bandwidth resource is sufficient for the service. If yes, go to step 1211 to install the corresponding quality of service policy rules for the service; if no, go to step 1214 to maintain the existing bandwidth and alert the home gateway.

In the home gateway QoS control scheduling model, when the same user terminal applies for the IPTV unicast service bandwidth and the IPTV multicast service bandwidth, the unicast request bandwidth is 2M when the unicast service bandwidth and the multicast service bandwidth are shared. The bandwidth of the multicast service request is 4M. With this scheduling model, the bandwidth resource can be adjusted to 4M of the shared bandwidth to ensure the quality of service of the multicast and unicast services. When the user terminal user owes a fee or normally goes offline to notify the policy server, the policy server may also issue a QoS policy for releasing the QoS resource to the home gateway, thereby ensuring effective recovery and full utilization of the QoS resource. When the home gateway does not have sufficient bandwidth allocation, and the QoS policy fails, the home gateway passes to the policy server, so the policy server directly rejects the service request from the user terminal, or rejects the service request from the user terminal through the application server. .

FIG. 18 is a schematic flowchart of processing a service request by a digital subscriber line access multiplexing device according to an embodiment of the present invention.

There are also various scheduling models for the QoS control of the Digital Subscriber Line Access Multiplexing Equipment (DSLAM) and the aggregation switch, such as the DSLAM multi-service scheduling model and the DSLAM multi-user group scheduling model. Here is a general QoS control scheduling model.

In step 1300, the DSLAM or the aggregation switch receives the quality of service policy rule.

In step 1301, the DSLAM or the aggregation switch first determines that the quality of service policy rule is to release the service.

QoS resources, or reserved QoS resources?

If the QoS resource is released, then go to step 1302, the DSLAM or the aggregation switch reclaims the bandwidth and uninstalls the corresponding quality of service policy rules.

If the QoS resource is reserved, the process proceeds to step 1303, where the user group type and the user type are determined. The user group type includes a common user group, a private line user group, and the like, and the user type includes a voice user, a normal user, and the like.

If the user type or the user group type is a normal user, the process proceeds to step 1304. If the user group is a dedicated user group or the user type is a privileged user, the process proceeds to step 1305 to determine whether the available bandwidth is greater than the service application bandwidth.

In step 1304, it is determined whether the user type is a normal user; if yes, go to step 1306; if not, go to step 1305 to determine whether the available bandwidth is greater than the service request bandwidth;

In step 1306, it is determined whether the available bandwidth is greater than the service request bandwidth; if yes, go to step 1307; if no, go to step 1308 to maintain the existing bandwidth and send an alarm to the DSLAM or the aggregation switch.

In step 1307, the home gateway performs the QoS policy rule, that is, the home gateway directly installs a corresponding QoS policy rule QoS policy rule for the user terminal that initiates the service request;

If it is determined in step 1305 whether the available bandwidth is greater than the service request bandwidth, the process proceeds to step 1307, and if the determination result is no, the process proceeds to step 1309;

In step 1309, the service bandwidth budget with a lower priority is adjusted, and it is determined whether the adjustment budget is successful. If the adjustment is successful, go to step 1307; otherwise, go to step 1308 to maintain the existing bandwidth and send an alarm to the DSLAM or the aggregation switch.

Here, the DSLAM dynamic QoS control scheduling model is different from the QoS control scheduling model of the home gateway. The DSLAM can receive the QoS policy rules from the policy server, and can identify and determine the QoS policy of each home gateway controlled service according to the VLAN tag. Rules, whereby the DSLAM can send a quality of service policy rule through an interface with a policy decision unit of the home gateway, limiting the total bandwidth of all services of each home gateway, or the bandwidth of multiple services, or the bandwidth of each service.

Implementing a policy server, a home gateway, and a service quality control method provided by an embodiment of the present invention, Has the following beneficial effects:

First, the policy server triggers according to the user service request, determines the service quality policy rule related to the service, and sends it to the home gateway for execution, realizing dynamic QoS control.

Secondly, the policy server also sends the QoS policy rule to the DSLAM/aggregation device corresponding to the home gateway, which not only considers the QoS policy configuration for the home gateway, but also considers the QoS policy configuration of the DSLAM/aggregation device corresponding to the home gateway. Quality of service guarantees on the data path from the home gateway to the policy server.

Then, the location management unit is introduced to manage the location information, and the location information of the home gateway and the corresponding DSLAM/aggregation device is provided for the policy server, which solves the problem of the discovery of the home gateway and the corresponding DSLAM/aggregation device.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, can also be implemented entirely by hardware. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

The above is only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

A method for controlling quality of service, characterized in that it comprises:

Performing the converted quality of service policy rules.

2. The QoS control method according to claim 1, wherein the obtaining the QoS policy rule from the policy decision function entity further comprises:

Sending a quality of service policy rule request to the policy decision function entity.

3. The QoS control method according to claim 1, wherein after the performing the converted quality of service policy rule, the method comprises:

Sending an execution result of executing the quality of service policy rule to the policy decision function entity.

The service quality control method according to any one of claims 1 to 3, wherein after the performing the converted quality of service policy rule, the method further comprises:

Upon receiving the quality of service policy rule for releasing the quality of service resource sent by the policy decision function entity, the quality of service resource is released.

5. A method of service quality control, characterized in that it comprises:

Receiving a service request or a request for a quality of service policy rule sent by a home gateway or a home gateway configuration unit;

Authorizing and deciding the service request, determining a service quality policy rule corresponding to the service requested by the service request according to the service identifier carried in the service request; or authorizing and deciding the service quality policy rule request, Determining a service quality policy rule corresponding to the service controlled by the home gateway according to the home gateway location information, the home gateway identifier, and the terminal identifier carried in the service quality policy rule request;

Transmitting the determined quality of service policy rule to assign a quality of service resource to the service request Home gateway.

The service quality control method according to claim 5, wherein the sending the determined quality of service policy rule to the home gateway that allocates the quality of service resource for the service request comprises: using the quality of service policy The rules are sent directly to the home gateway that assigns quality of service resources to the service; or

The quality of service policy rules are sent to an access device, which in turn is sent to a home gateway that allocates quality of service resources for the service.

The service quality control method according to claim 6, wherein after the determined service quality policy rule is sent to the home gateway that allocates the quality of service resource to the service request, the method further includes:

Receiving an execution result from the home gateway and/or the access device to execute a quality of service policy rule; permitting or denying the service requested by the service request according to the execution result of the performing the quality of service policy rule.

8. A home gateway, comprising:

The home gateway according to claim 8, wherein the home gateway further comprises: a policy requesting unit, configured to send a quality of service policy rule request to the policy decision function entity; the quality of service policy rule request Carrying home gateway location information, a home gateway identifier, and a terminal identifier;

And a policy response unit, configured to send, to the policy decision function entity, an execution result of executing the quality of service policy rule.

10. The home gateway according to claim 9, wherein the policy decision unit further uses Receiving a quality of service policy rule for releasing the quality of service resource sent by the policy decision function entity, and notifying the policy execution unit to release the related quality of service resource;

The policy execution unit is further configured to release the quality of service resource according to the quality of service policy for releasing the quality of service resource.

11. A policy decision function entity, characterized by comprising:

The policy decision function entity according to claim 10, wherein the policy sending unit forwards the quality of service policy rule by the access device to the home gateway; or

When the QoS policy rule request is sent by the home gateway, the policy decision unit determines a corresponding QoS policy rule for the service controlled by the home gateway that requests the QoS policy rule.

The policy decision function entity according to claim 11 or 12, wherein the policy decision function entity further comprises:

a location obtaining unit, configured to acquire, by the location server, a location of the home gateway and/or the access device, or used to obtain location of the home gateway according to location information of the home gateway carried in the QoS policy rule request ;

a response receiving unit, configured to receive an execution result of the quality of service policy rule from the home gateway;

And a service processing module, configured to allow or reject the service requested by the service request or the service controlled by the home gateway according to the execution result received by the response receiving unit.

A service quality control system, comprising: a policy decision function entity and a home gateway, wherein the policy decision function entity is configured to authorize and make a service request, and determine according to the service identifier carried in the service request. The service quality policy rule corresponding to the service requested by the service request; or the authorization and decision of the service quality policy rule request, the home gateway location information, the home gateway identifier, and the terminal carried in the request according to the service quality policy rule request Identifying, determining a service quality policy rule corresponding to the service controlled by the home gateway;

15. The quality of service control system of claim 14, wherein the system further comprises:

The access device is configured to receive a quality of service policy rule sent by the policy decision function entity, and forward the service quality policy rule to the home gateway.

16. The quality of service control system of claim 15, wherein the system further comprises:

a location server, configured to manage location information of the home gateway and/or the access device, and provide the location information to the policy decision function entity, so that the policy function entity is to the home gateway and / or the access device sends a quality of service policy rule.

The QoS control system according to claim 16, wherein the home gateway is further configured to send a QoS policy rule request to the policy decision function entity.

18. The quality of service control system of claim 16, wherein the system further comprises:

And a home gateway configuration unit, configured to send the quality of service policy rule request to the policy decision function entity.