CN106161375A - Distribution method, device, strategy controller and the grader of business chain mark - Google Patents

Abstract

The invention provides distribution method, device, strategy controller and the grader of a kind of business chain mark, the distribution method being somebody's turn to do business chain based on strategy controller mark includes: obtains IP Internet Protocol and connects the mark of access network IP-CAN session；Mark according to IP-CAN session and business chain policing rule, identify for multiple traffic flow assignment business chain based on this IP-CAN session setup；The mark of IP-CAN session and the business chain mark of multiple Business Stream based on this IP-CAN session setup are sent to grader.Traffic flow assignment business chain based on this IP-CAN session can be identified by the solution of the present invention according to IP-CAN session-level, guides Business Stream to corresponding business chain according to this business chain mark.

Description

Method, device, policy controller and classifier for assigning service chain identifiers

technical field

The present invention relates to the field of communication technology, in particular to a service chain identifier distribution method, device, policy controller and classifier.

Background technique

Currently, service flows are identified and differentiated based on rules such as user types and service characteristics, and service chain identifiers are assigned to service flows to guide service flows through different service chains. According to the existing mechanism of the mobile network, when a user attaches to the network, an Internet Protocol Connection Access Network (IP-CAN) session will be established. The same user may establish multiple IP-CAN sessions. In any session, the user can Initiate multiple business flows. At present, the mechanism of distinguishing business flows according to user and business levels and guiding them to corresponding business chains has been realized.

However, there is no mechanism for distinguishing service flows according to the IP-CAN session level and directing service flows to corresponding service chains. At the same time, since each user may initiate multiple services at the same time, the service requirements of these services are not necessarily the same. The method of assigning service chain IDs based on users is too extensive. However, if different service chain identifiers are allocated according to different services, each user's flow will have many different allocation methods, which is too fine. As a result, the division of service flows cannot be combined with the management technology of the core network, which is not flexible enough.

The current method for distinguishing service flows has the following defects: First, there is no mechanism for distinguishing service flows according to the IP-CAN session level and guiding the service flows to corresponding service chains. Second, there is currently a lack of definition of the default service chain identifier, that is, due to the rapid development of service flows and their rich and diverse characteristics, the policy controller cannot identify service flows that need to be targeted at users for this type of service A default service chain identifier is assigned to a flow; in addition, due to management requirements, a default service chain identifier needs to be assigned to a certain type of business flow of the user.

Contents of the invention

The technical problem to be solved by the present invention is to provide a service chain identifier distribution method, device, policy controller and classifier, which can assign service chain identifiers to service flows initiated based on the IP-CAN session according to the IP-CAN session level , and guide the service flow to the corresponding service chain according to the service chain identifier.

In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a method for allocating service chain identifiers, which is applied to a policy controller, and the method includes:

Obtain the identifier of the IP-CAN session of the Internet protocol connection access network;

According to the identifier of the IP-CAN session and the policy rules of the service chain, assign service chain identifiers to multiple service flows initiated based on the IP-CAN session;

The identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session are sent to the classifier, so that the classifier assigns corresponding service chain identifiers to the multiple service flows.

Wherein, the identifier of the IP-CAN session is a packet data network identifier or tunnel header information or an IP address.

Wherein, according to the identification of the IP-CAN session and the policy rules of the service chain, the step of distributing service chain identification for multiple service flows initiated based on the IP-CAN session includes:

According to the identifier of the IP-CAN session, determine multiple service flows initiated based on the IP-CAN session;

According to the policy rules of the service chain, the multiple service flows initiated based on the IP-CAN session are assigned the same or different service chain identifiers.

Wherein, according to the service chain policy rule, the step of distributing the same service chain identification to multiple service flows initiated based on the IP-CAN session includes:

According to the policy rules of the service chain, the same service chain identifier is allocated to the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session.

Wherein, according to the service chain policy rule, the steps of distributing different service chain identifiers to multiple service flows initiated based on the IP-CAN session include:

According to the policy rules of the service chain, assign the first service chain identifier to the upstream service flows in the multiple service flows initiated based on the IP-CAN session, and assign the second service chain identifier to the downstream service flows in the multiple service flows ; Wherein, the first service chain identifier is different from the second service chain identifier; or

According to the service chain policy rules, assign an uplink service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session, and assign a downlink service chain identifier to the downlink service flows among the multiple service flows ; Wherein, each uplink service chain identifier is different from each other, each downlink service chain identifier is different from each other, and the uplink service chain identifier and the downlink service chain identifier are different from each other; or

According to the policy rules of the service chain, assign a service chain identifier to the multiple service flows initiated based on the IP-CAN session; wherein, the service chain identifiers corresponding to each of the multiple service flows are different from each other.

The embodiment of the present invention also provides a device for allocating service chain identifiers, which is applied to a policy controller, and the device includes:

An acquisition module, configured to acquire the identifier of the IP-CAN session of the Internet protocol connection access network;

The first allocation module is used to allocate service chain identifiers for multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session and the service chain policy rules;

The sending module is configured to send the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session to the classifier, so that the classifier assigns corresponding service chain identifiers to the multiple service flows.

Wherein, the identifier of the IP-CAN session is a packet data network identifier or tunnel header information or an IP address.

Wherein, the first allocation module includes:

The first unit is configured to determine multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session;

The second unit is configured to assign the same or different service chain identifiers to multiple service flows initiated based on the IP-CAN session according to service chain policy rules.

Among them, the second unit includes:

The first subunit is configured to assign the same service chain identifier to both the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session according to service chain policy rules.

Among them, the second unit also includes:

The second subunit is configured to assign the first service chain identifier to the upstream service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign the first service chain identifier to the downstream service flows among the multiple service flows Both assign the second business chain ID; wherein, the first business chain ID is different from the second business chain ID; or

The third subunit is configured to assign an uplink service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign an uplink service chain identifier to the downlink service flows among the multiple service flows Distribute the IDs of the downlink service chains respectively; wherein, each uplink service chain ID is different from each other, each downlink service chain ID is different from each other, and the uplink service chain ID and the downlink service chain ID are different from each other; or

The fourth subunit is used to assign a service chain identifier to multiple service flows initiated based on the IP-CAN session according to the service chain policy rules; wherein, the service chain identifier corresponding to each service flow in the multiple service flows different from each other.

Among them, the device also includes:

The second assignment module is configured to assign a default service chain to a service flow identified according to user category, service characteristic of the service flow, IP-CAN session identifier, time, user location, network congestion status and/or wireless network access type ID, and send the default business chain ID and description information of the business flow to the classifier, so that the classifier assigns the default business chain ID for the business flow; wherein, the description information of the business flow includes any kind of information.

An embodiment of the present invention also provides a policy controller, including the above device for allocating service chain identifiers.

Embodiments of the present invention also provide a method for allocating service chain identifiers, which is applied to a classifier, and the method includes:

receiving the IP-CAN session identification of the Internet protocol connection access network sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session;

According to the IP-CAN session identifier and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session, assign corresponding service chain identifiers to the multiple service flows.

Wherein, according to the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session, the steps of assigning corresponding service chain identifiers to the multiple service flows include:

According to the identification of the IP-CAN session, receive and identify multiple service flows based on the IP-CAN session;

Obtaining service chain identifiers respectively corresponding to the plurality of service flows;

The service chain identifiers corresponding to the service flows are assigned to the corresponding service flows respectively.

Wherein, service chain identifiers corresponding to multiple service flows initiated based on the IP-CAN session are the same or different.

Among the multiple service flows initiated based on the IP-CAN session, the service chain identifiers respectively corresponding to the uplink service flow and the downlink service flow are the same.

Wherein, the upstream service flow in the multiple service flows initiated based on the IP-CAN session all corresponds to the first service chain identifier, and the downlink service flow in the multiple service flows corresponds to the second service chain identifier; wherein, the first service chain The ID is different from the ID of the second business chain; or

The upstream service flows in the multiple service flows initiated based on the IP-CAN session correspond to an upstream service chain identifier respectively, and the downstream service flows in the multiple service flows respectively correspond to a downstream service chain identifier; wherein, each upstream service chain identifier are different from each other, each downlink service chain ID is different from each other, and the uplink service chain ID and downlink service chain ID are different from each other; or

Multiple service flows initiated based on the IP-CAN session respectively correspond to a service chain identifier; wherein, the service chain identifiers corresponding to each of the multiple service flows are different from each other.

Embodiments of the present invention also provide a service chain identification distribution device, which is applied to a classifier, and the device includes:

The receiving module is used to receive the identification of the IP-CAN session of the Internet protocol connection access network sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session;

The third allocating module is configured to allocate corresponding service chain identifiers to multiple service flows according to the identifier of the IP-CAN session and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session.

Wherein, the third allocation module includes:

The third unit is used to receive and identify multiple service flows based on the IP-CAN session according to the identifier of the IP-CAN session;

The fourth unit is configured to obtain service chain identifiers respectively corresponding to the plurality of service flows;

The fifth unit is configured to assign service chain identifiers corresponding to service flows to corresponding service flows.

Among them, the device also includes:

The fourth allocation module is used to receive the service identified by the policy controller according to the user category, the service characteristic of the service flow, the identification of the IP-CAN session, time, user location, network congestion status and/or wireless network access type The default business chain identifier and the description information of the business flow allocated by the flow, and according to the description information of the business flow, the default service chain identifier is assigned to the business flow.

An embodiment of the present invention also provides a classifier, including the above apparatus for allocating service chain identifiers.

Above-mentioned scheme of the present invention comprises following beneficial effect at least:

In the embodiment of the present invention, the policy controller can assign service chain identifiers to multiple service flows corresponding to the IP-CAN session according to the identifier of the IP-CAN session and the service chain policy rules, so that the classifier can be configured according to the The IP-CAN session identifier assigns service chain identifiers to multiple service flows initiated based on the IP-CAN session, so that the classifier can guide these service flows to corresponding service chains according to the service chain identifiers.

Description of drawings

FIG. 1 is a flowchart of a method for allocating service chain identifiers applied to a policy controller in an embodiment of the present invention;

Fig. 2 is the specific flowchart of step 12 in Fig. 1 in the embodiment of the present invention;

Fig. 3 is one of the specific interaction flowcharts between the policy controller and the PCEF when the classifier is implemented on the basis of the PCEF in the embodiment of the present invention;

Fig. 4 is the second specific interaction flowchart between the policy controller and PCEF when the classifier is implemented on the basis of PCEF in the embodiment of the present invention;

Fig. 5 is one of the specific interaction flowcharts between the policy controller and the TDF or the classifier when the classifier is implemented on the basis of TDF or deployed separately in the embodiment of the present invention;

Fig. 6 is the second flow chart of the specific interaction between the policy controller and the TDF or the classifier when the classifier is implemented on the basis of the TDF or the classifier is deployed separately in the embodiment of the present invention;

7 is a schematic structural diagram of a device for allocating service chain identifiers applied to a policy controller in an embodiment of the present invention;

FIG. 8 is a flowchart of a method for allocating service chain identifiers applied to classifiers in an embodiment of the present invention;

FIG. 9 is a specific flowchart of step 82 in FIG. 8 in an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a device for allocating service chain identifiers applied to classifiers in an embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The present invention aims at the problem that the business flow is not distinguished according to the IP-CAN session level in the prior art, which leads to the problem that the business flow is not flexible enough, and provides a service chain identifier distribution method, device, policy controller and classifier, so that The policy controller can assign a service chain identifier to the service flow initiated based on the IP-CAN session according to the IP-CAN session level, and guide the service flow to the corresponding service chain according to the service chain identifier.

As shown in Figure 1, the embodiment of the present invention provides a method for allocating service chain identifiers, which is applied to a policy controller, and the method includes:

Step 11, obtaining the identifier of the IP-CAN session of the Internet protocol connection access network;

Wherein, in the embodiment of the present invention, the identifier of the IP-CAN session may be represented by a Packet Data Network (PDN) identifier or tunneling header (tunneling header) information or an IP address.

Step 12, according to the identification of the IP-CAN session and the policy rules of the service chain, assign a service chain identification for multiple service flows initiated based on the IP-CAN session;

Step 13: Send the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session to the classifier, so that the classifier assigns corresponding service chain identifiers to the multiple service flows.

In this embodiment of the present invention, the policy controller can assign a service chain identifier to a plurality of service flows corresponding to the IP-CAN session according to the identifier of the IP-CAN session and the service chain policy rule, so that the classifier can be configured according to the IP-CAN session The identifier of the IP-CAN session assigns a service chain identifier to multiple service flows initiated based on the IP-CAN session, so that the classifier can guide these services to the corresponding service chain according to the service chain identifier.

Wherein, in the above-mentioned embodiment of the present invention, as shown in FIG. 2, the specific steps of step 12 may include:

Step 121, according to the identification of the IP-CAN session, determine a plurality of service flows based on the IP-CAN session initiation;

Step 122, assign the same or different service chain identifiers to multiple service flows initiated based on the IP-CAN session according to service chain policy rules.

Specifically, in step 122, there are multiple ways to assign the same or different service chain identifiers to multiple service flows initiated based on the IP-CAN session, including:

The first type: do not distinguish between uplink and downlink service flows, according to service chain policy rules, assign the same service chain identifier to both the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session.

The second type: differentiate the uplink and downlink service flows, and assign different service chain identifiers to multiple service flows initiated based on the IP-CAN session;

Among them, the second situation specifically includes:

1. According to the service chain policy rules, assign the first service chain identifier to the upstream service flows among the multiple service flows initiated based on the IP-CAN session, and assign the second service to the downstream service flows among the multiple service flows Chain identification; wherein, the first service chain identification is different from the second service chain identification;

2. According to the service chain policy rules, assign an uplink service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session, and assign a downlink service to the downlink service flows among the multiple service flows Chain identification; wherein, each uplink service chain identification is different from each other, each downlink service chain identification is different from each other, and the uplink service chain identification and the downlink service chain identification are different from each other;

3. According to the service chain policy rules, assign a service chain identifier to the multiple service flows initiated based on the IP-CAN session; wherein, the service chain identifiers corresponding to each of the multiple service flows are different from each other.

In this embodiment of the present invention, the service chain policy rule includes the corresponding relationship between the identifier of the IP-CAN session and the identifier of the service chain assigned to multiple service flows initiated based on the IP-CAN session. Therefore, when the policy controller acquires the IP-CAN session, it will assign service chain identifiers to multiple service flows corresponding to the identifier of the IP-CAN session. And when assigning service chain IDs, no distinction is made between uplink and downlink service flows, that is, when assigning service chain IDs to multiple service flows, the same service chain ID can be assigned to these multiple service Each service flow is assigned a different service chain ID.

In a specific embodiment of the present invention, the policy controller can directly send the identifier of the IP-CAN session and the service chain identifiers of a plurality of service flows initiated based on the IP-CAN session to the classifier. After the request, the ID of the IP-CAN session and the service chain IDs of multiple service flows initiated based on the IP-CAN session are sent to it.

In a specific embodiment of the present invention, there are multiple ways in which the strategy controller sends the identifier of the IP-CAN session and the service chain identifiers of a plurality of service flows initiated based on the IP-CAN session to the classifier:

The first is sent in a separate signaling message;

The second is to add the identifier of the IP-CAN session and the identifiers of service chains of multiple service flows initiated based on the IP-CAN session to an existing message (such as an IP-CAN session confirmation message).

In another specific embodiment of the present invention, the policy controller will Assign default service chain identifiers to these service flows. In this way, when the classifier receives these service flows, it assigns corresponding default service chain identifiers to these service flows. Wherein, the default service chain identifier may be the same identification information as the existing (that is, already assigned to a certain service flow) service chain identifier, or may be new identification information.

In a specific embodiment of the present invention, a user can subscribe to multiple service flows, and the ways to distinguish these service flows include destination address level, user level, IP-CAN session level and service level. That is, in a specific application, the policy controller will select different ways to distinguish service flows according to the user's subscription.

In a specific embodiment of the present invention, the above-mentioned policy control can be realized by enhancing the function of the policy and charging rules function unit (PCRF, Policy and Charging Rules Function) defined by 3GPP, and the classifier can implement the function by enhancing the policy and charging (PCEF, Policy and Charging Enforcement Function) or traffic detection network element (TDF) function to achieve.

In a specific embodiment of the present invention, if the classifier is implemented on the basis of PCEF, and the policy controller sends the classifier the identification of the IP-CAN session and the services of multiple service flows initiated based on the IP-CAN session If the method of chain identification is the first method, there are at least two methods for the specific interaction process between the policy controller and the PCEF.

As shown in Figure 3, the first method is: first, the PCEF sends an IP-CAN session establishment request or update request or termination request to the PCRF;

Then the PCRF can send the service chain policy message to PCEF, and the service chain policy message carries the identification of the IP-CAN session and the service chain identification (or default service chain identification) of multiple service flows initiated based on the IP-CAN session );

Then the classifier will distinguish the service flow according to the identifier of the IP-CAN session (or the description information of the service flow corresponding to the default service chain identifier), and allocate the corresponding service chain identifier or the default service chain identifier for this service flow. The description information of the service flow includes information such as the identification, time, location, service characteristics and IP quintuple of the service flow corresponding to the IP-CAN session of the service flow.

As shown in Figure 4, the second method is: first, PCRF actively sends a service chain policy message to PCEF, and the service chain policy message carries the identifier of the IP-CAN session and multiple IP-CAN session-based The business chain ID of the business flow (or the default business chain ID).

Then similar to the first method, the classifier will distinguish the service flow according to the identifier of the IP-CAN session (or the description information of the service flow corresponding to the default service chain identifier), and assign the corresponding service chain identifier or the default service chain identifier to this service flow. The business chain identifier. The description information of the service flow includes information such as the identifier of the IP-CAN session corresponding to the service flow and the IP quintuple of the service flow.

In a specific embodiment of the present invention, if the classifier is implemented on the basis of TDF (or the classifier is deployed separately), and the policy controller sends the identifier of the IP-CAN session to the classifier and initiates based on the IP-CAN session If the first way is to identify the service chains of multiple service flows, there are at least two ways for the specific interaction process between the policy controller and the TDF (or classifier).

As shown in Figure 5, the first way is: first, the PCEF sends an IP-CAN session establishment request or update request or termination request to the PCRF;

Then PCRF can send the service chain policy message to TDF or classifier, and carry the identification of IP-CAN session and the service chain identification (or default business chain identifier);

Then the classifier will distinguish the service flow according to the identifier of the IP-CAN session (or the description information of the service flow corresponding to the default service chain identifier), and allocate the corresponding service chain identifier or the default service chain identifier for this service flow. The description information of the service flow includes information such as the identifier of the IP-CAN session corresponding to the service flow and the IP quintuple of the service flow.

As shown in Figure 6, the second method is: first, PCRF actively sends a service chain policy message to the TDF or classifier, and the service chain policy message carries the IP-CAN session identifier and initiates the IP-CAN session based on the IP-CAN session. The service chain identifier (or the default service chain identifier) of multiple business flows;

Then the classifier will distinguish the service flow according to the identifier of the IP-CAN session (or the description information of the service flow corresponding to the default service chain identifier), and assign the corresponding service chain identifier or the default service chain identifier to this service flow. The description information of the service flow includes information such as the identifier of the IP-CAN session corresponding to the service flow and the IP quintuple of the service flow.

In the foregoing embodiments of the present invention, the policy controller is used to assign corresponding service chain identifiers to multiple service flows initiated based on IP-CAN sessions between the terminal and the network according to the service chain policy rules, so that the service chain identifiers can be The service flow is guided to the corresponding service chain, and the effective guidance of multiple service flows initiated based on the IP-CAN session is realized.

As shown in FIG. 7, the embodiment of the present invention also provides a service chain identification distribution device, which is applied to a policy controller, and the device includes:

Obtaining module 71, for obtaining the identification of IP-CAN session of Internet protocol connection access network;

The first allocation module 72 is used to allocate service chain identifiers for multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session and the service chain policy rules;

The sending module 73 is configured to send the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session to the classifier, so that the classifier assigns corresponding service chain identifiers to the multiple service flows.

Wherein, the identifier of the IP-CAN session is a packet data network identifier or tunnel header information or an IP address.

Wherein, the first allocation module 72 includes:

The first unit is configured to determine multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session;

The second unit is configured to assign the same or different service chain identifiers to multiple service flows initiated based on the IP-CAN session according to service chain policy rules.

Among them, the second unit includes:

The first subunit is configured to assign the same service chain identifier to both the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session according to service chain policy rules.

Among them, the second unit also includes:

The second subunit is configured to assign the first service chain identifier to the upstream service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign the first service chain identifier to the downstream service flows among the multiple service flows Both assign the second service chain identifier; wherein, the first service chain identifier is different from the second service chain identifier; or

The third subunit is configured to assign an uplink service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign an uplink service chain identifier to the downlink service flows among the multiple service flows Distribute the IDs of the downlink service chains respectively; wherein, each uplink service chain ID is different from each other, each downlink service chain ID is different from each other, and the uplink service chain ID and the downlink service chain ID are different from each other; or

The fourth subunit is used to assign a service chain identifier to multiple service flows initiated based on the IP-CAN session according to the service chain policy rules; wherein, the service chain identifier corresponding to each service flow in the multiple service flows different from each other.

Among them, the device also includes:

The second assignment module is configured to assign a default service chain to a service flow identified according to user category, service characteristic of the service flow, IP-CAN session identifier, time, user location, network congestion status and/or wireless network access type ID, and send the default business chain ID and description information of the business flow to the classifier, so that the classifier assigns the default business chain ID for the business flow; wherein, the description information of the business flow includes any kind of information.

It should be noted that the apparatus for allocating service chain IDs applied to policy controllers provided in the embodiments of the present invention is applied to the above-mentioned method for allocating service chain IDs applied to policy controllers. That is, all the embodiments of the above methods are applicable to the device, and can achieve the same or similar beneficial effects.

An embodiment of the present invention also provides a policy controller, including the above-mentioned apparatus for allocating service chain identifiers.

As shown in Figure 8, the embodiment of the present invention also provides a method for allocating service chain identifiers, which is applied to a classifier, and the method includes:

Step 81, receiving the identification of the IP-CAN session of the Internet protocol connection access network sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session;

Step 82, according to the IP-CAN session identifier and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session, assign corresponding service chain identifiers to the multiple service flows.

Wherein, in the above-mentioned embodiment of the present invention, as shown in FIG. 9, the above-mentioned step 82 may specifically include:

Step 821, according to the identification of the IP-CAN session, receive and identify multiple service flows based on the IP-CAN session;

Step 822, obtaining service chain identifiers respectively corresponding to the plurality of service flows;

Step 823, assigning service chain identifiers corresponding to the service flows to corresponding service flows.

In a specific embodiment of the present invention, corresponding to the above-mentioned embodiment of the method applied to the policy controller, here, the classifier is receiving and storing the identification of the IP-CAN session and multiple services initiated based on the IP-CAN session After the service chain identifier of the flow (or the default service chain identifier and the description information of the service flow corresponding to the default service chain identifier), when it receives the service flow initiated based on the IP-CAN session, it will A corresponding service chain identifier is assigned to the service flow, so as to guide the service flow to the corresponding service chain.

Wherein, in the above embodiments of the present invention, the service chain identifiers corresponding to the multiple service flows initiated based on the IP-CAN session are the same or different.

The situations where multiple service flows initiated based on the IP-CAN session correspond to the same service chain identifier include:

Among the multiple service flows initiated based on the IP-CAN session, the service chain identifiers respectively corresponding to the uplink service flow and the downlink service flow are the same.

The different service chain identifiers corresponding to the multiple service flows initiated based on the IP-CAN session include:

The upstream service flow in the multiple service flows initiated based on the IP-CAN session all corresponds to the first service chain identifier, and the downstream service flow in the multiple service flows corresponds to the second service chain identifier; wherein, the first service chain identifier and The second business chain identifier is different; or

The upstream service flows in the multiple service flows initiated based on the IP-CAN session correspond to an upstream service chain identifier respectively, and the downstream service flows in the multiple service flows respectively correspond to a downstream service chain identifier; wherein, each upstream service chain identifier are different from each other, each downlink service chain ID is different from each other, and the uplink service chain ID and downlink service chain ID are different from each other; or

Multiple service flows initiated based on the IP-CAN session respectively correspond to a service chain identifier; wherein, the service chain identifiers corresponding to each of the multiple service flows are different from each other.

As shown in FIG. 10, the embodiment of the present invention also provides a service chain identification distribution device, which is applied to a classifier, and the device includes:

The receiving module 101 is used to receive the identification of the Internet protocol connection access network IP-CAN session sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session;

The third allocation module 102 is configured to allocate corresponding service chain identifiers to multiple service flows according to the identifier of the IP-CAN session and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session.

Wherein, the third allocation module 102 includes:

The third unit is used to receive and identify multiple service flows based on the IP-CAN session according to the identifier of the IP-CAN session;

The fourth unit is configured to obtain service chain identifiers respectively corresponding to the plurality of service flows;

The fifth unit is configured to assign service chain identifiers corresponding to service flows to corresponding service flows.

Among them, the device also includes:

The fourth allocation module is used to receive the service identified by the policy controller according to the user category, the service characteristic of the service flow, the identification of the IP-CAN session, time, user location, network congestion status and/or wireless network access type The default business chain identifier and the description information of the business flow allocated by the flow, and according to the description information of the business flow, the default service chain identifier is assigned to the business flow.

It should be noted that the apparatus for allocating service chain IDs applied to classifiers provided in the embodiment of the present invention is applied to the above-mentioned method for allocating service chain IDs applied to classifiers. That is, all the embodiments of the above methods are applicable to the device, and can achieve the same or similar beneficial effects.

An embodiment of the present invention also provides a classifier, including the above-mentioned apparatus for allocating service chain identifiers.

The foregoing embodiments of the present invention can distinguish service flows based on the granularity of the IP-CAN session, formulate, update or delete service chain policy rules for the service flow of the IP-CAN session, and assign corresponding service chain identifiers to service flows, classifying The device can guide the service flow of IP-CAN session granularity to pass through the corresponding service chain according to the service chain identifier. The service chain policy control mechanism for IP-CAN session service flow enriches the capability of the service chain control mechanism and improves the flexibility of its control. And for some service flows that the policy controller cannot identify, a default service chain identifier can be assigned, and the classifier can guide the corresponding service flow to the corresponding service chain according to the default service chain identifier.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (21)

1. A method for distributing service chain identifiers, applied to a policy controller, characterized in that the method comprises: Obtain the identifier of the IP-CAN session of the Internet protocol connection access network; According to the identifier of the IP-CAN session and the policy rules of the service chain, assign service chain identifiers to multiple service flows initiated based on the IP-CAN session; Sending the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session to the classifier, so that the classifier assigns corresponding service chain identifiers to the multiple service flows. 2. The method according to claim 1, wherein the identifier of the IP-CAN session is a packet data network identifier or tunnel header information or an IP address. 3. The method according to claim 1, wherein, according to the identification of the IP-CAN session and the service chain policy rule, the step of distributing the service chain identification for a plurality of service flows initiated based on the IP-CAN session comprises : According to the identifier of the IP-CAN session, determine multiple service flows initiated based on the IP-CAN session; According to the policy rules of the service chain, the multiple service flows initiated based on the IP-CAN session are assigned the same or different service chain identifiers. 4. The method according to claim 3, wherein, according to the service chain policy rule, the step of distributing the same service chain identification to a plurality of service flows initiated based on the IP-CAN session comprises: According to the policy rules of the service chain, the same service chain identifier is allocated to the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session. 5. The method according to claim 3, wherein, according to the service chain strategy rule, the step of distributing different service chain identifications to a plurality of service flows initiated based on the IP-CAN session comprises: According to the service chain policy rules, assign the first service chain identifier to the upstream service flows in the multiple service flows initiated based on the IP-CAN session, and allocate the second service to the downstream service flows in the multiple service flows A chain identifier; wherein, the first service chain identifier is different from the second service chain identifier; or According to the service chain policy rules, assign an uplink service chain identifier to the uplink service flows in the multiple service flows initiated based on the IP-CAN session, and assign a downlink service to the downlink service flows in the multiple service flows Chain identification; wherein, each uplink service chain identification is different from each other, each downlink service chain identification is different from each other, and the uplink service chain identification and the downlink service chain identification are different from each other; or According to the service chain policy rules, assign a service chain identifier to multiple service flows initiated based on the IP-CAN session; wherein, the service chain identifiers corresponding to each service flow in the multiple service flows are different from each other. 6. A device for allocating service chain identifiers, applied to a policy controller, characterized in that the device comprises: An acquisition module, configured to acquire the identifier of the IP-CAN session of the Internet protocol connection access network; The first allocation module is used to allocate service chain identifiers for multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session and the service chain policy rules; A sending module, configured to send the identifier of the IP-CAN session and the service chain identifiers of multiple service flows initiated based on the IP-CAN session to the classifier, so that the classifier assigns corresponding The business chain identifier. 7. The device according to claim 6, wherein the identifier of the IP-CAN session is a packet data network identifier or tunnel header information or an IP address. 8. The device of claim 6, wherein the first distribution module comprises: The first unit is configured to determine multiple service flows initiated based on the IP-CAN session according to the identifier of the IP-CAN session; The second unit is configured to assign the same or different service chain identifiers to multiple service flows initiated based on the IP-CAN session according to service chain policy rules. 9. The apparatus of claim 8, wherein the second unit comprises: The first subunit is configured to assign the same service chain identifier to both the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session according to service chain policy rules. 10. The apparatus of claim 8, wherein the second unit further comprises: The second subunit is configured to assign a first service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign the first service chain identifier to the downlink service flows among the multiple service flows All service flows are assigned a second service chain identifier; wherein, the first service chain identifier is different from the second service chain identifier; or The third subunit is configured to assign an uplink service chain identifier to the uplink service flows among the multiple service flows initiated based on the IP-CAN session according to the service chain policy rules, and assign an uplink service chain identifier to the downlink service flows among the multiple service flows The service flows are respectively assigned with downlink service chain identifiers; wherein, each uplink service chain identifier is different from each other, each downlink service chain identifier is different from each other, and the uplink service chain identifier and the downlink service chain identifier are different from each other; or The fourth subunit is configured to assign a service chain identifier to multiple service flows initiated based on the IP-CAN session according to service chain policy rules; wherein, the service corresponding to each service flow in the multiple service flows Chain IDs are different from each other. 11. The device of claim 6, further comprising: The second assignment module is configured to assign a default service chain to a service flow identified according to user category, service characteristic of the service flow, IP-CAN session identifier, time, user location, network congestion status and/or wireless network access type identify, and send the default service chain identifier and description information of the service flow to the classifier, so that the classifier assigns the default service chain identifier for the service flow; wherein, the description information of the service flow includes identification Any kind of information on which this business flow is based. 12. A policy controller, characterized by comprising the device for allocating service chain identifiers according to any one of claims 6-11. 13. A method for distributing service chain identifiers, applied to a classifier, characterized in that the method comprises: receiving the IP-CAN session identification of the Internet protocol connection access network sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session; According to the IP-CAN session identifier and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session, assign corresponding service chain identifiers to the multiple service flows. 14. The method according to claim 13, wherein, according to the identifier of the IP-CAN session and the service chain identifiers of a plurality of service flows initiated based on the IP-CAN session, give the plurality of services The steps of assigning the corresponding service chain identifier to the flow include: According to the identification of the IP-CAN session, receive and identify multiple service flows based on the IP-CAN session; Obtaining service chain identifiers respectively corresponding to the plurality of service flows; The service chain identifiers corresponding to the service flows are assigned to the corresponding service flows respectively. 15. The method according to claim 13, wherein the service chain identifiers corresponding to the multiple service flows initiated based on the IP-CAN session are the same or different. 16. The method according to claim 15, wherein the service chain identifiers corresponding to the uplink service flow and the downlink service flow among the multiple service flows initiated based on the IP-CAN session are the same. 17. The method according to claim 15, characterized in that, based on the IP-CAN session, the uplink service flows in the multiple service flows initiated correspond to the first service chain identifier, and the downlink service in the multiple service flows Each flow corresponds to a second service chain identifier; wherein, the first service chain identifier is different from the second service chain identifier; or The uplink service flows in the multiple service flows initiated based on the IP-CAN session correspond to an uplink service chain identifier respectively, and the downlink service flows in the multiple service flows respectively correspond to a downlink service chain identifier; wherein, each uplink service The chain identifiers are different from each other, each downlink service chain identifier is different from each other, and the uplink service chain identifier and the downlink service chain identifier are different from each other; or Multiple service flows initiated based on the IP-CAN session respectively correspond to a service chain identifier; wherein, the service chain identifiers corresponding to each of the multiple service flows are different from each other. 18. A device for allocating service chain identifiers, applied to a classifier, characterized in that the device comprises: The receiving module is used to receive the identification of the IP-CAN session of the Internet protocol connection access network sent by the policy controller and the service chain identification of multiple service flows initiated based on the IP-CAN session; The third allocation module is configured to allocate corresponding service chain identifiers to the multiple service flows according to the identifier of the IP-CAN session and the service chain identifiers of the multiple service flows initiated based on the IP-CAN session. 19. The apparatus of claim 18, wherein the third distribution module comprises: The third unit is configured to receive and identify multiple service flows based on the IP-CAN session according to the identifier of the IP-CAN session; The fourth unit is configured to obtain service chain identifiers respectively corresponding to the plurality of service flows; The fifth unit is configured to assign service chain identifiers corresponding to service flows to corresponding service flows. 20. The apparatus of claim 18, further comprising: The fourth allocation module is used to receive the service identified by the policy controller according to the user category, the service characteristic of the service flow, the identification of the IP-CAN session, time, user location, network congestion status and/or wireless network access type The default service chain identifier assigned to the flow and the description information of the service flow, and according to the description information of the service flow, the default service chain identifier is assigned to the service flow. 21. A classifier, characterized by comprising the device for allocating service chain identifiers according to any one of claims 18-20.