WO2014026336A1 - 一种dscp的标记处理方法、系统及策略实体 - Google Patents

一种dscp的标记处理方法、系统及策略实体 Download PDF

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Publication number
WO2014026336A1
WO2014026336A1 PCT/CN2012/080163 CN2012080163W WO2014026336A1 WO 2014026336 A1 WO2014026336 A1 WO 2014026336A1 CN 2012080163 W CN2012080163 W CN 2012080163W WO 2014026336 A1 WO2014026336 A1 WO 2014026336A1
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Prior art keywords
dscp
data stream
fixed network
rule
pcrf
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PCT/CN2012/080163
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English (en)
French (fr)
Inventor
张爱琴
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/080163 priority Critical patent/WO2014026336A1/zh
Priority to CN201280025911.9A priority patent/CN103918229B/zh
Publication of WO2014026336A1 publication Critical patent/WO2014026336A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/24Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2441Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/24Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2483Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows

Definitions

  • the invention belongs to the field of MACROBUTTON network technology, and particularly relates to a DSCP tag processing method. System and policy entities.
  • ePDG Eolved Packet Data Gateway
  • the evolved packet data gateway has a QoS (Quality of Service) guarantee on the corresponding central network path, and in the fixed network segment, it also needs to ensure end-to-end QoS.
  • BPCF Broadband Policy Control Function
  • the broadband policy control function in the QoS interworking network architecture in the WLAN access scenario
  • the PCRF Policy and Charging Rule Function
  • IP packet header DSCP (Differentiated The Service Code Point (differential service point code) value is an important parameter.
  • DSCP belongs to IETF (Internet Engineering Task Force, Internet Engineering Task Force) DiffServ (Differentiated Service) , differentiated service) system technology, that is, each transmission message is divided into different categories in the network transmission, and the classified information is included in the IP packet header.
  • the DiffServ system uses the TOS in the IP header ( The first 6 bits in the Type of Service, the type of service, carry the classification information of the message. These 6 bits are called DSCP. Value. Of course, the classification information of these packets can also be carried on the link layer header. Each switch and router is based on DSCP The classification information identified by the value adopts a suitable transmission service policy, such as providing different transmission priorities, different reserved bandwidths, and discarding some less important packets. With these DSCPs Based on the point code information, the network node performs operations including classification, policy, marking, queuing, scheduling, and the like.
  • DSCP marking there are two main rules for DSCP marking: one is on a fixed network node (for example, BNG), for accessing PS ( Packet Switching, Packet Switching)
  • PS Packet Switching, Packet Switching
  • the IP packet of the core network data stream The outer DSCP value tag (for example, the following line packet) can be based on packets from the mobile network element.
  • the DSCP value is mapped, that is, according to the QoS rule; second, for the locally unloaded data stream, the processing on the BNG is based on the QoS rule received by the BNG from the BPCF.
  • QCI QoS Class Identifier
  • DSCP DSCP for all packets at the target data flow level in the QoS rule
  • the tag of the value that is, according to the PCC (Policy and Charging Control) rule, the comparison table of the two tag rules can be pre-configured in BNG On the node.
  • fixed network nodes such as BNG or BRAS, lack of fixed network nodes in the prior art
  • the mechanism for DSCP marking on TWAG) or the mechanism for marking the DSCP values of fixed IP nodes for IP packet headers needs to strictly distinguish which data streams of mobile terminals are PS.
  • the processing method of the fixed network node is complicated, and the processing method is not flexible enough.
  • An object of the embodiments of the present invention is to provide a DSCP tag processing method, system, and policy entity, which are designed to solve Fixed network nodes
  • the processing logic for marking DSCPs is not simple enough or flexible.
  • the embodiment of the present invention is implemented as a method for marking a DSCP, and the method includes:
  • the policy entity After the mobile terminal or the fixed network device successfully accesses the network through the fixed network, the policy entity acquires the data flow type and corresponds to the data flow type.
  • the DSCP marks the rule and sends a DSCP tag rule corresponding to the data stream type to the fixed network node;
  • the fixed network node performs DSCP marking on the target data stream according to the received DSCP marking rule.
  • Another object of the embodiments of the present invention is to provide a DSCP tag processing system, where the system includes Fixed network nodes and policy entities, where:
  • the policy entity is configured to: after the mobile terminal or the fixed network device successfully accesses the network through the fixed network, Obtaining a data stream type and a DSCP marking rule corresponding to the data stream type, and sending a DSCP marking rule corresponding to the data stream type to the fixed network node;
  • the fixed network node is configured to perform DSCP marking on the target data stream according to the received DSCP marking rule.
  • Another object of the embodiment of the present invention is to provide a policy entity, where the policy entity includes:
  • An acquisition unit configured to: after the mobile terminal or the fixed network device successfully accesses the network through the fixed network, Obtaining a data stream type and a DSCP tagging rule corresponding to the data stream type;
  • a sending unit configured to send a DSCP corresponding to the data stream type Marking rules into the fixed network node, so that the fixed network node performs DSCP marking on the target data stream according to the received DSCP marking rule.
  • the policy entity obtains a data flow type and a DSCP marking rule corresponding to the data flow type, and sends a DSCP marking rule corresponding to the data flow type to the fixed network node, and the fixed network node receives the DSCP according to the received Marking rules, performing DSCP marking on the target data stream, solves the problem that the processing logic of the existing fixed network node marking the DSCP is not simple and flexible, and the DSCP of the fixed network node is made. Tag processing logic is simplified, flexibility is improved, and so on.
  • FIG. 1 is a flowchart of an implementation of a DSCP tag processing method according to a first embodiment of the present invention
  • FIG. 2 is a flowchart of an implementation of a DSCP tag processing method according to a second embodiment of the present invention
  • FIG. 3 is a flowchart of an implementation of a DSCP tag processing method according to a third embodiment of the present invention.
  • FIG. 4 is a flowchart of an implementation of a DSCP tag processing method according to a fourth embodiment of the present invention.
  • FIG. 5 is a flowchart of an implementation of a DSCP tag processing method according to a fifth embodiment of the present invention.
  • FIG. 6 is a structural diagram of a DSCP tag processing system according to a sixth embodiment of the present invention.
  • FIG. 7 is a structural diagram of a DSCP tag processing system according to a seventh embodiment of the present invention.
  • FIG. 8 is a structural diagram of a policy entity according to an eighth embodiment of the present invention.
  • the embodiment of the present invention sends a DSCP corresponding to a fixed network device or a mobile terminal by using a policy entity.
  • the marking rule enables the fixed network node to clearly understand the appropriate DSCP marking of the corresponding data stream of the fixed network device or the mobile terminal, and the fixed network node processing operation is simplified, and the flexible and effective implementation can be implemented.
  • the DSCP tagging strategy also helps to make rational use of network resources and so on.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 is a flowchart showing an implementation process of a DSCP tag processing method according to a first embodiment of the present invention, which is described in detail as follows:
  • step S101 after the mobile terminal or the fixed network device successfully accesses the network through the fixed network, The policy entity obtains a data flow type and a DSCP marking rule corresponding to the data flow type, and sends a DSCP marking rule corresponding to the data flow type to the fixed network node.
  • the policy entity is a BPCF, a fused PCRF, or another policy entity that includes the BPCF function, and the
  • the other policy entities of the BPCF function are policy entities other than the fused PCRF, and the fused PCRF has both the BPCF and the PCRF.
  • the functional policy entity that is, the policy and charging rule function and the broadband policy control function, are generally used in the mobile and fixed network domain convergence scenario.
  • the data stream type is a packet switched data stream of the mobile terminal Or locally unloading a data stream, or a type in the data stream of the fixed network device, and the policy entity can generate a DSCP containing the data flow description information according to the data flow type.
  • a tag rule where the description information specifically includes a source IP address, a destination IP address, a source port, a destination port, and a protocol type of the data stream.
  • the DSCP marking rules can be included in PCC rules or QoS In the rule, the QoS rule or PCC rule is generated in parallel by the PCRF, or the DSCP tagging rule is directly generated by the PCRF, and PCC The rules and the like are sent together in parallel to a fixed network node or the like, wherein the PCC rule is a policy for locally offloading or accessing a data stream or a fixed device related data stream for the mobile terminal, and the QoS rule is a PS for the mobile terminal The strategy of data flow.
  • the fixed network node is a broadband network gateway BNG and/or a trusted WLAN access gateway TWAG
  • BNG broadband network gateway
  • TWAG trusted WLAN access gateway
  • the two fixed network nodes may perform DSCP marking on the corresponding data stream, or only one fixed network node may perform DSCP marking.
  • the foregoing data flow description information or other information sent by the policy entity can perform DSCP on the target data stream that needs to be marked. Marking, so that the policy entity can distinguish between different access devices and different data access methods, for example, when acquiring the data stream type corresponding to the access packet switched PS data stream, then acquiring and transmitting with the PS.
  • the DSCP marking rule corresponding to the data flow to the fixed network node, and the DSCP marking rule may be included in the PCC rule, or may be transmitted and used in parallel as a separate rule and a PCC rule.
  • the DSCP marking rule can be used to indicate that the fixed network node BNG and / or TWAG are indicated in real time according to a pre-configured DSCP mapping table or DSCP marking rule on the fixed network node.
  • the DSCP corresponding to the QCI value, or the fixed network node BNG and / or TWAG keeps the DSCP value of the target data stream unchanged, etc., which can be preset according to the actual situation.
  • the step S101 specifically includes the following steps:
  • the policy entity After the policy entity establishes an IP-CAN session with the PCRF, obtains corresponding to the local unloaded data stream from the PCRF.
  • the DSCP marks the rule and sends the DSCP tag rule to the fixed network node, so that the fixed network node performs DSCP marking on the local unloaded data stream according to the DSCP marking rule;
  • the PCRF obtains a DSCP marking rule corresponding to the packet switched data stream, and sends the DSCP marking rule to the fixed network node, so that the fixed network node according to the DSCP A tag rule that DSCP-marks the packet-switched data stream.
  • the policy entity sends a DSCP tag rule or sends a deactivate DSCP tag rule to the fixed network node BNG and / Or TWAG specifically includes: for a local offload data stream or a packet switched data stream, the policy entity passes the interface with the fixed network node BNG (eg, a predefined R interface or a Gxd interface)
  • the DSCP marking rule is sent to the fixed network node BNG; or, for WLAN trusted access, TWAG and BNG a local offloaded data stream or a packet switched data stream in a separate scenario, the policy entity passing the DSCP through an interface with the fixed network node TWAG (assumed to be a P interface in the embodiment of the present invention)
  • the marking rule is sent directly to the fixed network node TWAG; or, for WLAN trusted access, TWAG and BNG a local offload data stream or a packet switched data stream in a separate scenario, the policy entity sends the DSCP labeling rule to the fixed network node BNG
  • the fixed network node BNG and / or TWAG can obtain the rule information of the DSCP tag to Marking of DSCP values, etc. on BNG and / or TWAG.
  • the DSCP marking rule corresponding to the local offload data stream is the PCRF Directly returning the DSCP tagging rule corresponding to the local offloaded data stream in real time, or establishing a reply or modifying the DSCP carried in the IP-CAN (IP connection network access session) Marking rules; and the DSCP marking rule corresponding to the packet-switched data stream is the DSCP corresponding to the packet-switched data stream returned by the PCRF in real time. Mark the rule, or establish a reply or modify the DSCP marking rule carried in the message to the gateway control session.
  • IP-CAN IP connection network access session
  • the step S101 specifically includes the following steps:
  • the policy entity After the policy entity establishes an IP-CAN session with the PCRF, obtains, corresponding to the local unloaded data stream, from the PCRF. a PCC rule that generates a DSCP tagging rule corresponding to the local offloaded data stream according to the PCC rule, or the policy entity generates a DSCP independent of the PCC rule according to the PCC rule Mark the rules and send the DSCP marking rules that exist independently or generated according to the PCC rules to the fixed network nodes BNG and / or TWAG so that the fixed network nodes BNG and / or TWAG performs DSCP marking on the local offload data stream according to the DSCP marking rule;
  • the PCRF obtains a QoS rule corresponding to the local offload data stream, and generates a DSCP tag rule corresponding to the local offload data stream according to the QoS rule, or the policy entity according to the QoS
  • the rule generates a DSCP marking rule that is independent of the QoS rule and sends the DSCP marking rule to the fixed network node BNG and / or TWAG so that the fixed network node is based on the DSCP Marking rules, DSCP marking the packet switched data stream;
  • the policy entity directly generates a DSCP corresponding to the fixed network device data flow.
  • the rule is marked and the DSCP tag rule is sent to the BNG, so that the BNG performs DSCP tagging on the data stream of the fixed network device according to the DSCP tag rule.
  • the DSCP marking rule corresponding to the local unloaded data stream is a PCC directly included in the PCRF and returned in real time.
  • the policy entity generates a DSCP marking rule corresponding to the local offloaded data stream according to the PCC rule, or is the IP-CAN (IP)
  • IP IP-CAN
  • the connection network access session establishes a reply or modify the DSCP marking rule carried in the message; and the DSCP marking rule corresponding to the packet-switched data stream is the QoS directly included in the PCRF directly in real time.
  • the policy entity generates a DSCP marking rule corresponding to the packet-switched data flow according to the QoS rule, or establishes a reply or modify the DSCP carried in the message for the gateway control session.
  • Tag rules are examples of the packet-switched data flow according to the QoS rule, or establishes a reply or modify the DSCP carried in the message for the gateway control session.
  • the DSCP tag processing method further includes:
  • the policy entity When it is detected that the connection between the mobile terminal and the mobile packet data gateway is disconnected, the policy entity is based on the PCRF
  • the sent gateway controls the session end message and ends the gateway control session with the PCRF;
  • the policy entity sends a deactivate DSCP Marking rules to the fixed network node, so that the fixed network node deactivates the DSCP marking rule of the packet switched data stream of the mobile terminal;
  • the policy entity detects that the IP-CAN session between the policy entity and the PCRF ends, sending a deactivated DSCP Marking rules to the fixed network node, so that the fixed network node deactivates the DSCP marking rule for the packet switched data stream of the mobile terminal.
  • the policy entity sends the DSCP marking rule or sends a deactivated DSCP marking rule to the fixed network node BNG.
  • TWAG specifically: for a local offload data stream or a packet switched data stream, the policy entity passes the DSCP through an interface with a fixed network node BNG, such as an R interface or a Gxd interface.
  • the tagging rule or the deactivated DSCP tagging rule is sent to the fixed network node BNG; or, for the local offloaded data stream or the packet switched data stream in the WLAN trusted access scenario, the policy entity passes through the fixed network node
  • the TWAG interface (the present invention is assumed to be a P interface) sends the DSCP marking rule or deactivated DSCP marking rule directly to the fixed network node TWAG; or, for WLAN In the trusted access, the local offload data stream or the packet switched data stream in the scenario where the TWAG and the BNG are separated, and the policy entity passes the DSCP tag rule or deactivates through the interface with the fixed network node BNG.
  • the DSCP marking rule is sent to the fixed network node BNG, and the fixed network node BNG further passes the interface between the BNG and the TWAG (the present invention is set to the X interface). Marking rules or deactivating DSCP marking rules are sent to the fixed network node TWAG; or, for packet switched data flows in a WLAN trusted access scenario, the policy entity moves through the packet data gateway and The S2a interface between the TWAGs sends the bearer QCI information to the TWAG, so that the TWAG performs DSCP on the packet switched data stream according to the carried QCI information. Mark.
  • the fixed network node BNG and or TWAG can obtain the DSCP tag rule information or deactivate DSCP. Mark rules to perform tagging of DSCP values on BNG and or TWAG.
  • the step S101 specifically includes the following steps:
  • the fused PCRF establishes an IP-CAN session with the fixed network node BNG;
  • the fused PCRF When the data stream type is obtained corresponding to the local unloading data stream of the mobile terminal, the fused PCRF generates and Sending a DSCP marking rule corresponding to the local offload data stream to the fixed network node BNG and / or TWAG, so that the fixed network node BNG and / or TWAG according to the DSCP Marking rules to DSCP mark the local offloaded data stream;
  • the fused PCRF When the acquired data stream type corresponds to the data stream of the fixed network device, the fused PCRF generates and sends the fixed network device with the fixed network device.
  • the DSCP marking rule corresponding to the data stream is sent to the fixed network node BNG, so that the fixed network node BNG performs DSCP on the data flow of the fixed network device according to the DSCP marking rule.
  • the data stream type obtained by the fused PCRF corresponds to the packet switched data stream of the mobile terminal, and generates and sends a DSCP marking rule corresponding to the packet switched data stream to the fixed network node.
  • BNG and / or TWAG such that the fixed network node BNG and / or TWAG DSCP mark the packet switched data stream according to the DSCP marking rule.
  • the type of the data stream may be obtained based on information described by the data stream or based on other information, for example, APN identification information, fixed network node BNG or session type information established between TWAG and PCRF, and data routing information on the PCRF.
  • the DSCP tag rule corresponding to the local offload data stream is the fused PCRF
  • the DSCP marking rule corresponding to the data flow description information is a DSCP marking rule corresponding to the data flow of the fixed network device returned by the fusion PCRF in real time, or is the IP Connect to the network access session to establish a reply or modify the DSCP marking rule carried in the message;
  • the DSCP marking rule corresponding to the packet switched data stream is the fusion PCRF
  • the fused PCRF sends the DSCP marking rule to the fixed network node BNG and / or TWAG Specifically, for the local offload data stream or the packet switched data stream or the fixed network device data stream, the fused PCRF passes the DSCP through an interface (for example, a Gxd interface) with the fixed network node BNG.
  • an interface for example, a Gxd interface
  • the tagging rule or the deactivated DSCP tagging rule is sent to the fixed network node BNG; or, for the local offloaded data stream or the packet switched data stream in the WLAN trusted access scenario, the fusion PCRF Transmitting the DSCP marking rule or the deactivating DSCP marking rule to the fixed network node TWAG through an interface with the fixed network node TWAG (the present invention is set to the K interface); or, for In the WLAN trusted access, the local offload data stream or packet switched data stream in the scenario where TWAG and BNG are separated, and the fusion PCRF passes through the interface with the fixed network node BNG (for example, Gxd).
  • the interface sends the DSCP marking rule or the deactivated DSCP marking rule to the fixed network node BNG, and the fixed network node BNG further passes the BNG and TWAG
  • the interface between the two (the invention is set to the X interface) sends the DSCP marking rule or the deactivated DSCP marking rule to the fixed network node TWAG; or, for WLAN a packet-switched data stream in a trusted access scenario, where the fused PCRF sends the bearer QCI information to the TWAG through the S2a interface between the mobile packet data gateway and the TWAG, so that The TWAG performs DSCP marking on the packet switched data stream based on the QCI information carried.
  • step S102 the fixed network node performs DSCP on the target data stream according to the received DSCP marking rule. Mark.
  • the DSCP marking rule can be used to indicate that the fixed network node is based on a pre-configured DSCP mapping table on the fixed network node or The DSCP mapping table in real time indicated in the DSCP marking rule, DSCP marking the target data stream, or instructing the fixed network node to mark the target data stream as the indicated DSCP value or indicated
  • the fixed network node performs DSCP on each data packet of the target data flow according to the DSCP mapping table.
  • Value mapping or marking the DSCP value of each data stream as a DSCP value that is directly indicated by a DSCP value or indirectly indicated by a QCI value, or a DSCP that maintains the target data stream The value does not change.
  • the policy entity is a BPCF, a fused PCRF, or includes the BPCF.
  • the specific DSCP marking process in the following is described in detail in the second embodiment, the third embodiment, the fourth embodiment, and the like, and is not described here.
  • the DSCP that marks the currently accessed data stream is sent by the policy entity.
  • the marking rule can send corresponding DSCP marking rules for different data streams, and the fixed network node only needs to perform the corresponding data flow according to the received DSCP marking rule sent from the policy entity.
  • the DSCP value is marked so that the fixed network node knows the DSCP marking rules for different data flows of the mobile terminal or the fixed network device, so that the DSCP of each IP header of the data stream Appropriate processing of values simplifies the processing logic of fixed gateways and increases the flexibility of fixed network nodes for DSCP value marking.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 is a flowchart showing an implementation process of a DSCP tag processing method according to a second embodiment of the present invention, where In BPCF, when the device connected to the fixed network is a mobile terminal, taking the fixed network node as the BNG as an example, the specific implementation process of the DSCP tag processing method is as follows:
  • step S21 the mobile terminal sends an access network request to the HSS/AAA server through the fixed network domain.
  • step S22 the BNG in the fixed network domain performs access authentication on the mobile terminal.
  • the BNG can perform EAP-AKA authentication on the mobile terminal, and the EAP-AKA is applied to 3G.
  • the identity authentication and key distribution protocol of the network and after the authentication is successful, the mobile terminal will acquire the assigned local IP network address.
  • step S23 after the authentication is successful, the BNG sends a trigger establishment IP to the BPCF. A message to connect to a network access session.
  • step S24 the BPCF obtains the current data stream type as a local unloaded data stream type according to the message, and The PCRF establishes an IP connection network access session.
  • step S25 the PCRF sends a DSCP tag rule corresponding to the local offload data stream to the BPCF. .
  • the DSCP marking rule may be a mapping table or a DSCP value after indicating the marking required for the DSCP marking, and the like.
  • the PCRF provides a PCC rule for the local unloading data flow, and the rule includes the related DSCP tagging policy, and the PCRF sends the PCC rule to the BPCF.
  • the PCRF can also directly send the DSCP tagging policy to the BPCF in parallel with the PCC rule.
  • step S26 the BPCF receives the DSCP marking rule and sends the DSCP marking rule to the BNG to cause the BNG to DSCP mark the local offloaded data stream of the mobile terminal.
  • the IP The DSCP tagging rule can be carried in the connection network access session, so that the BPCF can also directly from the IP
  • the DSCP tagging rule corresponding to the local unloading data stream is obtained in real time by the network access session management (establishing reply, modification, etc.) message to trigger the BNG to perform DSCP on the mobile terminal's local offload data stream.
  • the function of the tag may be included in the PCC rule, that is, the PCRC sends the PCC rule including the DSCP marking rule to the BPCF.
  • the BPCF obtains a DSCP marking rule corresponding to the locally unloaded data stream according to the PCC rule; or the DSCP marking rule can also be used as an independent individual, that is, by PCRF
  • the DSCP marking rule corresponding to the local unloaded data stream is directly delivered to the BPCF, so that the BPCF can directly forward the DSCP rule to the BNG. In particular, it can be preset according to the actual situation.
  • mapping table required to indicate the DSCP label may be a flag indication established according to the QCI rule, if the PCC rule does not contain the QCI Rule, but directly include the DSCP value after the indicator mark, that is, the DSCP value obtained by obtaining the mark according to the QCI rule in advance on BPCF or PCRF, then BNG After receiving the DSCP value of the indication mark, each local offload data stream of the mobile terminal is directly DSCP marked.
  • step S27 the mobile terminal establishes a connection with the mobile packet data gateway PDN GW.
  • step S28 the PDN GW triggers an IP connection network access session with the PCRF.
  • IP connection network access session is different from BPCF and PCRF in step S23
  • the connection between them is related to the PS packet exchange data access of the mobile terminal.
  • step S29 the PCRF triggers a gateway control session with the BPCF.
  • step S210 the PCRF sends a DSCP marking rule corresponding to the packet switched data stream to the BPCF. .
  • step S211 the BPCF receives the DSCP marking rule and sends the DSCP marking rule to the BNG, so that the BNG performs DSCP marking on the packet switched data stream of the mobile terminal.
  • the PCRF can also send the bearer QCI information to the TWAG through the S2a interface between the mobile packet data gateway and the TWAG, so that The TWAG performs DSCP marking on the packet switched data stream based on the QCI information carried.
  • the PCRF may provide the BPCF with QoS rules related to packet switched service data, and the QoS The rule is delivered to the BPCF.
  • the QoS rule includes a DSCP marking rule corresponding to the packet switched data flow, and the BPCF is based on the QoS.
  • the rule obtains the DSCP tagging rule corresponding to the packet-switched data stream; or the DSCP tagging rule can also be used as an independent entity, that is, the PCRF directly issues the corresponding data of the packet-switched data stream.
  • DSCP marks the rule into BPCF so that the BPCF can directly forward the DSCP rule to BNG.
  • BPCF triggers to BNG
  • the sending gateway controls the session management (including establishing a reply, modifying, etc.) message, which includes a DSCP marking rule or a DSCP mapping indication, and description information of the packet switched data stream (for example, with a mobile terminal and The address of the EPDG is quintuple address information, etc., to trigger the BNG to activate the data flow for packet-switched access to the mobile terminal, and perform DSCP value marking according to the mapping indication.
  • BPCF can send the DSCP labeling rule to the fixed network node BNG through the interface with the fixed network node BNG, and the fixed network node BNG Further, the DSCP marking rule can be sent to the fixed network node TWAG through the interface between the BNG and the TWAG. At this time, the DSCP marking rule can directly be the above step S211.
  • the DSCP marking rule received by the BNG from the PCRF may also be a new DSCP rule further generated based on the DSCP marking rule in the above step S211.
  • the PCRF Triggered by some conditions, for example, detection of change of subscription data, change of network congestion status, change of user remaining amount, PCRF
  • the DSCP tag received by the BPCF is the real-time acquired, latest DSCP. Marking rules, so that the marking rules can be issued more flexibly and accurately. That is, the BPCF can send DSCP marking rules to BNG and / or TWAG in real time to make BNG and / Or TWAG activates the DSCP value tagging of the relevant data stream of the mobile terminal.
  • the DSCP marking rules can also be included in PCC rules or QoS rules in BNG.
  • the specific DSCP pre-configured on the BNG is activated at the granularity of each terminal according to the PCC rule or the marking indication in the QoS rule.
  • Tag mapping table, etc. the specific method of marking includes DSCP mapping one by one for each IP packet, DSCP value of the data stream according to QCI value, and maintaining DSCP It does not change or marks the DSCP value of the corresponding data stream to the indicated value, and so on.
  • the policy entity when the policy entity is another policy entity that includes the BPCF function, the BPCF may be included.
  • the other policy entities of the function replace the above-mentioned BPCF, and the operations of the DSCP tag processing of the BNG or TWAG on the data stream are performed through the above steps, and details are not described herein again.
  • the BPCF or other policy entity that includes the BPCF function The DSCP tagging rule corresponding to the data stream of the fixed network device is directly generated, and the PCRF is not used, or is not included in the PCC rule or QoS rule delivered by the PCRF, and the The DSCP marking rule is sent to the BNG, so that the fixed network node BNG performs DSCP marking on the data stream of the fixed network device according to the DSCP marking rule.
  • BNG or TWAG needs to be DSCP at the appropriate time.
  • the tagging rules are deactivated or invalidated.
  • the PCRF will trigger to BPCF.
  • the sending gateway controls the session end message, and also sends the updated QoS rule, which is used to notify the fixed network to release network resources, etc., and BPCF
  • the gateway control session with the PCRF is ended, and the deactivated DSCP marking rule is sent to the BNG or TWAG, so that the BNG or TWAG deactivates the packet-switched data stream of the mobile terminal, DSCP mapping tag processing, and the like.
  • the BNG also deactivates the DSCP tagging feature for all local offload data streams on the terminal.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • FIG. 3 is a flowchart showing an implementation process of a DSCP tag processing method according to a third embodiment of the present invention, specifically, when a policy entity is a fusion In the PCRF, when the device connected through the fixed network is a mobile terminal, the fixed network node is taken as the BNG as an example, and the mobile terminal passes the fixed network domain to the HSS/AAA.
  • the server sends an access network request, and the BNG in the fixed network domain performs access authentication on the mobile terminal. After the authentication succeeds, the specific implementation process of the DSCP tag processing method is as follows:
  • step S31 the BNG sends a trigger to establish an IP connection network access session to the fused PCRF.
  • step S32 the fused PCRF establishes an IP with the BNG according to the message. Connect to a network access session.
  • step S33 the fusion PCRF obtains the current data flow description information as a local offload data flow description information, and generates and Send the DSCP tagging rule corresponding to the local unloading stream description information to the BNG.
  • step S34 the BNG performs DSCP on the local offload data stream according to the DSCP marking rule. Mark.
  • the network node BNG triggers an IP-CAN session establishment process to the fusion PCRF
  • the IP-CAN session will provide DSCP marking rules for local offload or PCC rules containing DSCP marking rules that can enhance QCI including existing mechanisms IDCP tagging rules can also be added for identification, broadband size, etc.
  • IDCP tagging rules can also be added for identification, broadband size, etc.
  • the DSF tagging rule that provides local DSTP tagging or the PCC rule that contains DSCP tagging rules can also be used by PCRF. Issued to the BNG.
  • the fused PCRF includes the function of the BPCF, the BNG end receives a clear and specific indication of the current data flow of the mobile terminal, that is, at this time.
  • the BNG can activate the DSCP marking function according to the QCI for all current data flows of the mobile terminal, and the DSCP marking rules can include marking according to the QCI, or maintaining the DSCP The value does not change, or indicates a DSCP value, etc.
  • step S35 a connection is established between the mobile terminal and the mobile packet data gateway, the fusion PCRF Establish an IP-CAN session with the mobile packet data gateway.
  • step S36 the fused PCRF establishes a gateway control session with the BNG.
  • step S37 the fused PCRF obtains the current data flow description information as a packet switched data flow description information, and generates Sending a DSCP marking rule corresponding to the packet switched data flow description information to the fixed network node BNG.
  • the DSCP marking rule corresponding to the packet exchange data flow description information may also be included in the QoS rule by the fusion
  • the PCRF sends the QoS rule to the BNG. Specifically, after the gateway control session is successfully established, the PCRF triggers sending a PS to the BNG (Gxd interface). Messages for QoS rules related to business data.
  • step S38 the fixed network node performs DSCP on the packet switched data stream according to the DSCP marking rule. Mark.
  • the mobile terminal establishes a packet data network PDN connection establishment process.
  • Mobile Packet Data Gateway PDN GW The process of triggering IP-CAN session establishment to the Fusion PCRF is different from the IP-CAN session described in step 31.
  • the IP-CAN session of Step 38 is established on the PDN GW. Between this and the fusion PCRF, it is related to mobile terminal PS data access. Further the PCRF triggers to BNG The gateway controls the process of session establishment.
  • DSCP is included in the gateway control session establishment request message or in the message that the fused PCRF provides the QoS rule related to the PS service data to the BNG.
  • mapping indication, and description information of the PS data stream (for example, the address of the UE and the ePDG is quintuple address information) to trigger the BNG activation to perform PS on the UE
  • the accessed data stream performs DSCP mapping according to the indicated mapping table.
  • DSCP mapping is performed one by one for each IP packet, further included in DSCP
  • the identifier of the mapping table is indicated in the marking rule, for example, indicating that the BNG performs DSCP mapping or the like according to the preset table A instead of other such as Table B.
  • the fusion PCRF Generating and transmitting a DSCP marking rule corresponding to the data flow description information of the fixed network device to the fixed network node BNG, so that the fixed network node BNG performs BNG according to the DSCP marking rule.
  • the data stream is DSCP-marked.
  • the specific marking method includes marking according to QCI, or saving the DSCP value, or marking all the data streams of the fixed network device according to the indication of the fused PCRF.
  • the fused PCRF passes DSCP to the BNG.
  • Marking rules which enable the setting of flexible DSCP marking rules for fixed devices and mobile terminals, enabling BNG to always understand the specific DSCP for each fixed device and mobile terminal.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • FIG. 5 is a flowchart showing an implementation process of a DSCP tag processing method according to a fifth embodiment of the present invention.
  • the policy entity in the foregoing Embodiment 2 and Embodiment 3 is configured to deliver DSCP to the BNG.
  • the description of the marking rule is only the node that is initially in the network of the mobile terminal or the fixed network access device (the fixed network device).
  • the policy entity can also send the BNG trigger in different scenarios or different congestion states of the network.
  • Update the DSCP tagging rule taking the policy entity as the fused PCRF as an example, as detailed below:
  • step S501 the fusion PCRF When it is detected that the preset condition is satisfied, an updated DSCP marking rule corresponding to the acquired data stream type is generated.
  • the fusion PCRF Triggered by some conditions, including but not limited to changes in subscription data, changes in network congestion status, changes in user remaining credits, and the fusion PCRF
  • the local policy on the local or because some special data streams are detected for example, the fusion PCRF learns from the data detection function that the current user uses an application, such as P2P; and punishes the user, P2P
  • the applied DSCP value is specially processed, for example, the IP header DSCP value of the P2P application is set to a lower value).
  • the fusion PCRF triggers DSCP on mobile terminals or fixed network devices
  • An update of the tagging policy which can be obtained by the IP address or virtual local area network obtained by the mobile terminal or the fixed network device (VLAN Virtual Local Area Network).
  • the identifier is granular, or the IP quintuple description of the more granular packet describes the target data stream that needs to be DSCP policy updated.
  • step S502 the fused PCRF sends the updated DSCP to the mobile terminal or the fixed network device. Tag rules.
  • the fused PCRF passes the Gxd interface with the BNG to the IP-CAN.
  • the updated DSCP tagging rule is sent to the BNG.
  • the fusion PCRF and BNG The gateway controls the form of the session modification message to send the updated DSCP tagging rule to the BNG, where the updated DSCP
  • the tagging rule can be used as a separate entity (requires at least information describing the target data stream description and DSCP value information that needs to be tagged). Or as part of a PCC rule or QoS rule.
  • step S503 the BNG is based on the received DSCP.
  • a tagging rule that marks the target data stream of a mobile terminal or a fixed network device.
  • the BNG receives the IP-CAN session modification message or the gateway control session modification message, according to which DSCP Mark rules to update DSCP marking rules for current mobile/fixed-line device data to IP address + port granularity, or to VLAN (virtual local area network, Virtual Local Area Network ) is identified as granularity.
  • DSCP Mark rules to update DSCP marking rules for current mobile/fixed-line device data to IP address + port granularity, or to VLAN (virtual local area network, Virtual Local Area Network ) is identified as granularity.
  • the fixed network node BNG always has a clear understanding of the specific DSCP for each fixed device or mobile terminal.
  • the labeling rules for values, all decision points in the fusion PCRF, that is, the generation of labeling rules by the fusion PCRF, help to achieve differentiated control for each device.
  • Fusion PCRF For the fixed network equipment, the lower DSCP priority mark is used in the state of network congestion, and the higher DSCP is adopted for the local access data of the mobile terminal. Priority tag. In the case of a good network state (for example, when the fixed network resources are abundant), the original DSCP marking is adopted, and when the BNG receives the data packet, it is not DSCP.
  • the tag does any additional processing, but it is processed and forwarded according to the original value, thus saving the processing of the node.
  • the fusion PCRF or other policy entities can pass to BNG or TWAG. Send updated DSCP marking rules to implement flexible implementation of DSCP marking rules for fixed and mobile terminals.
  • FIG. 6 shows a DSCP tag processing system according to a sixth embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the DSCP tag processing system includes a fixed network node 61 and a policy entity 62, wherein:
  • the policy entity 61 is configured to: after the mobile terminal or the fixed network device successfully accesses the network through the fixed network, Obtaining a data stream type and a DSCP marking rule corresponding to the data stream type, and sending a DSCP marking rule corresponding to the data stream type to the fixed network node 62;
  • the fixed network node 62 is configured to perform DSCP on the target data stream according to the received DSCP marking rule. Mark.
  • the policy entity is a BPCF, a fused PCRF, or another policy entity that includes the BPCF function.
  • Fusion PCRF is a policy entity that has both BPCF and PCRF functions.
  • the data stream type corresponds to a packet switched data stream or a local offload data stream of the mobile terminal, and the fixed network device One of the data streams.
  • the fixed network node is a broadband network gateway BNG and/or a trusted WLAN access gateway TWAG.
  • the DSCP for the mobile terminal or the fixed network device is sent to the BNG or TWAG through the policy entity.
  • the marking rule solves the problem that the processing logic of the fixed network node marking the DSCP is not simple and flexible, so that BNG or TWAG.
  • a clear understanding of the specific DSCP value marking policy for each specified device and mobile terminal enables flexible DSCP for fixed line devices and mobile terminals
  • the purpose of the tagging policy function is also to facilitate the rational use of network resources and so on.
  • the policy entity 61 when the policy entity 61 is a fused PCRF, the policy entity 61 specifically includes:
  • An access session establishing unit configured to establish an IP-CAN session with the BNG
  • the fourth unit is generated and sent by the rule, and is used to generate a data stream type corresponding to the local unloading data stream of the mobile terminal. Sending a DSCP marking rule corresponding to the local unloading data stream to the fixed network node;
  • the fifth unit of the rule generation and sending is used to generate and send the data stream type corresponding to the fixed network device when the acquired data stream type
  • the policy entity 61 specifically includes:
  • control session establishing unit configured to connect with the BNG after the mobile terminal establishes a connection with the mobile packet data gateway Establish a network management control session
  • the sixth unit is generated and sent by the rule, and the generated data stream type is generated corresponding to the packet-switched data stream of the mobile terminal. Sending a DSCP marking rule corresponding to the packet switched data stream to the fixed network node.
  • the present invention provides The structure of the tag processing system of the DSCP is as described in the following seventh embodiment, and details are not described herein again.
  • the DSCP marking rule is used to indicate that the fixed network node 62 is configured according to the DSCP pre-configured on the fixed network node 62.
  • the value or the DSCP corresponding to the indicated QCI value, or the fixed network node 62 keeps the DSCP value of the target data stream unchanged.
  • the fixed network node 62 is specifically configured to perform DSCP on each data packet of the target data flow according to the DSCP mapping table.
  • Value mapping or marking the DSCP value of each data stream as a DSCP value that is directly indicated by a DSCP value or indirectly indicated by a QCI value, or a DSCP that maintains the target data stream The value does not change.
  • An embodiment of the present invention provides a DSCP processing system including a policy entity and a fixed network node, where the policy entity corresponds to the data flow.
  • the DSCP marking rule is sent to the fixed network node.
  • the DSCP marking rule can indicate how the BNG performs DSCP marking on the data packet/data flow, including DSCP for each IP packet. Map, or mark the DSCP of the stream according to the QCI value, or keep the DSCP unchanged, or the DSCP of the corresponding data stream The value is marked as the indicated value or the like, so that the processing logic and the like of the fixed network node can be simplified.
  • FIG. 7 shows a DSCP tag processing system according to a seventh embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
  • the policy entity is another policy entity that includes the BPCF function (but is not limited to the policy entity, for example, BPCF), when the device successfully accessed by the fixed network is a mobile terminal, the fixed network node is a BNG as an example, and the mobile terminal passes the fixed network domain to the HSS/AAA.
  • the server sends an access network request, and the BNG in the fixed network domain performs access authentication on the mobile terminal.
  • the DSCP tag processing system includes the policy entity 71 and the fixed network node.
  • the policy entity 71 specifically includes an access session establishing unit 711, a marking rule first sending unit 712, a control session establishing unit 713, and a marking rule second transmitting unit 714.
  • the fixed network node corresponds to the function of the fixed network node 72 described in the foregoing fifth embodiment, and details are not described herein again.
  • An access session establishing unit 711 is configured to perform policy and charging control on the local offload data stream, and the PCRF Establish an IP-CAN session;
  • a marking rule first sending unit 712 configured to obtain a DSCP corresponding to the local unloaded data stream from the PCRF Marking rules and sending the DSCP marking rules to the fixed network node 72;
  • control session establishing unit 713 configured to exchange packet data after the mobile terminal establishes a connection with the mobile packet data gateway. Perform policy and charging control and establish a gateway control session with the PCRF;
  • the second sending unit 714 configured to obtain, from the PCRF, a DSCP corresponding to the packet switched data stream. Mark the rule and send the DSCP tag rule to the fixed network node 72.
  • the other policy entity including the BPCF function establishes the unit 711 through the access session.
  • the IP connection network access session can carry the DSCP marking rule, and then the first sending unit 712 of the marking rule directly
  • the IPCP network access network session management (establishment reply, modification, etc.) message returned by the PCRF obtains the DSCP marking rule corresponding to the local unloaded data stream in real time to trigger the fixed network node 72 (BNG)
  • BNG fixed network node 72
  • the DSCP marking rule can be included in the PCC rule, that is, the PCRF will contain the DSCP
  • the PCC rules of the tagged rule are delivered to other policy entities that include the BPCF function, so that other policy entities that include the BPCF function obtain the corresponding data corresponding to the local offload data stream according to the PCC rule.
  • DSCP tagging rule; or the DSCP tagging rule can also be used as a separate entity, that is, the PCRF directly issues the DSCP tagging rule corresponding to the local unloading data stream to include BPCF.
  • the other policy entities that include the BPCF function can directly forward the DSCP rule to the BNG, which can be preset according to the actual situation.
  • the mapping table required for the DSCP tag can be a tag indication established according to the QCI rule. If the PCC rule does not contain the QCI rule, but directly includes the DSCP value after the indicator tag, that is, The BPCP or the PCRF pre-acquires the DSCP value obtained according to the QCI rule, and the BNG receives the DSCP after the indication mark. After the value, each local offloaded data stream of the mobile terminal is directly DSCP marked.
  • the PCRF can also provide packet switched service data related QoS to other BPCF-capable policy entities.
  • a rule and the QoS rule is delivered to the other policy entity that includes the BPCF function, for example, after the mobile terminal establishes a connection with the mobile packet data gateway, the BPCF is included
  • the other policy entity of the function obtains the data flow description information type as the packet switched data flow description information by the control session establishing unit 713, and establishes a gateway control session with the PCRF at this time.
  • the rule includes a DSCP tag rule corresponding to the packet switched data stream, and the tag rule second sending unit 714 acquires the DSCP corresponding to the packet switched data stream according to the QoS rule.
  • DSCP marking rules can also be used as independent individuals, that is, the PCRF directly issues DSCP marking rules corresponding to packet-switched data streams to include BPCF
  • the function is in other policy entities, so that the other policy entity BPCF that contains the BPCF function can directly forward the DSCP rule to BNG.
  • the other policy entity that contains the BPCF function triggers the BNG
  • the sending gateway controls the session management (including establishing a reply, modifying, etc.) message, which includes a DSCP marking rule or a DSCP mapping indication, and description information of the packet switched data stream (for example, with a mobile terminal and The address of the EPDG is quintuple address information, etc., to trigger the BNG to activate the data flow for packet-switched access to the mobile terminal, and perform DSCP value marking according to the mapping indication.
  • the policy entity 71 when the policy entity 71 is another policy entity that includes the BPCF function, the policy entity 71 It can also include:
  • the rule generates and sends a first unit, configured to obtain, from the PCRF, a PCC rule corresponding to the local unloaded data stream, according to the
  • the PCC rule generates a DSCP tag rule corresponding to the local offload data stream, and sends the DSCP tag rule to the fixed network node 72;
  • the policy entity 71 also includes:
  • control session establishing unit configured to connect to the PCRF after the mobile terminal establishes a connection with the mobile packet data gateway Establish a gateway control session
  • a second unit for generating and transmitting a rule for obtaining a QoS rule corresponding to the packet switched data stream from the PCRF, according to the
  • the QoS rule generates a DSCP marking rule corresponding to the packet switched data stream and sends the DSCP marking rule to the fixed network node 72.
  • the policy entity 71 may further include:
  • the third unit is configured to generate and send a DSCP corresponding to the data stream of the fixed network device after the fixed network device accesses the network. Mark the rule and send the DSCP tag rule to the BNG.
  • the BPCF or other policy entity including the BPCF function including the BPCF function
  • the DSCP tagging rule corresponding to the data stream of the fixed network device is directly generated, and the PCRF is not used, or is not included in the PCC rule or QoS rule delivered by the PCRF, and the The DSCP marking rule is sent to the BNG, so that the fixed network node BNG performs DSCP marking on the data stream of the fixed network device according to the DSCP marking rule.
  • the policy entity 71 further includes:
  • a session ending unit configured to detect, when the connection between the mobile terminal and the mobile packet data gateway is disconnected, according to the PCRF
  • the sent gateway controls the session end message and ends the gateway control session with the PCRF
  • the DSCP of the data stream in the mobile terminal or the fixed network device is implemented by the session ending unit and the deactivation transmitting unit.
  • Marking functions, etc. that is, BNG needs to deactivate or invalidate DSCP marking rules when appropriate.
  • PCRF When all PDN connections to the packet exchange data of the mobile terminal are disconnected, PCRF It will trigger the sending of the gateway control session end message to BPCF, and will also issue the updated QoS rule, which is used to notify the fixed network to release network resources, etc., and BPCF
  • the session end unit ends the gateway control session with the PCRF, and uses the deactivation sending unit to send a deactivated DSCP to the BNG.
  • the marking rule causes the BNG to deactivate the DSCP mapping tag processing for the packet switched data stream of the mobile terminal. At this point, the BNG also activates the DSCP for all local offloaded traffic to the terminal. Deactivated processing of the tag.
  • the DSCP sent by the policy entity to the fixed network node The marking rule is used to instruct the fixed network node to perform DSCP on the target data stream according to the DSCP mapping table pre-configured on the fixed network node or the DSCP mapping table indicated in real time in the DSCP marking rule.
  • Mark or instruct the fixed network node to mark the target data stream as the indicated DSCP value or the DSCP corresponding to the indicated QCI value, or DSCP indicating that the fixed network node maintains the target data stream
  • the value is unchanged, and the fixed network node performs DSCP value mapping on each data packet of the target data stream according to the DSCP mapping table, or marks the DSCP value of each data stream as the DSCP through the DSCP mapping table.
  • the value directly indicates the DSCP value indicated by the QCI value indirectly, or keeps the DSCP value of the target data stream unchanged, and finally reaches the DSCP sent to the BNG through the policy entity. Marking rules or updated DSCP marking rules, etc., for the purpose of implementing flexible DSCP marking policies for fixed devices and mobile terminals.
  • FIG. 8 The structure of the policy entity provided by the eighth embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown.
  • the policy entity includes an obtaining unit 81 and a sending unit 82, wherein:
  • the obtaining unit 81 is configured to: when the mobile terminal or the fixed network device successfully accesses the network through the fixed network, Obtain a data stream type and a DSCP tagging rule corresponding to the stream type;
  • a sending unit 82 configured to send a DSCP corresponding to the data stream type
  • the rule is tagged into the fixed network node, so that the fixed network node performs DSCP marking on the target data flow according to the received DSCP marking rule.
  • the policy entity is a BPCF, a fused PCRF, or another policy entity that includes the BPCF function.
  • the fusion PCRF is a policy entity having both the BPCF and the PCRF function;
  • the data stream type is a packet switched data stream or a local offload data stream of the mobile terminal, and the fixed network device
  • the fixed network node is a broadband network gateway BNG and/or a trusted WLAN access gateway TWAG, and in a specific connection architecture, the BNG can be applied separately, and the BNG TWAG is not allowed, it must exist at the same time as BNG.
  • DSCP can be implemented for data flow separately. Marking, it is also possible to perform DSCP marking on the corresponding target data stream at the same time.
  • the obtaining unit 81 is specifically configured to obtain, from the PCRF, a DSCP marking rule corresponding to the local unloaded data stream;
  • the obtaining unit 81 is specifically configured to obtain a DSCP marking rule corresponding to the packet switched data stream from the PCRF.
  • the policy entity is BPCF or other policy entity that includes the BPCF function
  • the obtaining unit 81 After establishing an IP-CAN session with the PCRF, the obtaining unit 81 is specifically used to the PCRF Obtaining a PCC rule corresponding to the local offload data stream, and generating a DSCP tag rule corresponding to the local offload data stream according to the PCC rule;
  • the obtaining unit 81 is specifically used from the PCRF. Obtaining a QoS rule corresponding to the packet switched data stream, and generating a DSCP marking rule corresponding to the packet switched data stream according to the QoS rule;
  • the acquiring unit 81 is specifically configured to directly generate a data stream corresponding to the fixed network device. DSCP tagging rules.
  • the policy entity After DSCP marking the data stream in the mobile terminal or the fixed network device, the policy entity further includes:
  • a session end unit 83 configured to detect, when the connection between the mobile terminal and the mobile packet data gateway is disconnected, according to the PCRF
  • the sent gateway controls the session end message and ends the gateway control session with the PCRF
  • Deactivation rule sending unit 84 for sending deactivated DSCP Marking rules to the fixed network node, so that the fixed network node deactivates the DSCP marking rule for the packet switched data stream of the mobile terminal.
  • the deactivation rule sending unit 84 is further configured to: when detecting the IP-CAN between the PCRF and the PCRF At the end of the session, a deactivated DSCP tag rule is sent to the fixed network node.
  • the acquiring unit 81 when the policy entity is the fused PCRF, the acquiring unit 81 Specifically, when acquiring a local unloaded data stream corresponding to the mobile terminal, the DSCP marking rule corresponding to the local unloaded data stream is generated;
  • the DSCP marking rule is used to indicate that the fixed network node is configured according to a pre-configured DSCP mapping table on the fixed network node or The DSCP mapping table in real time indicated in the DSCP marking rule, DSCP marking the target data stream, or instructing the fixed network node to mark the target data stream as the indicated DSCP value or indicated
  • the DSCP corresponding to the QCI value indicates that the fixed network node keeps the DSCP value of the target data stream unchanged.
  • the embodiment of the present invention provides a policy entity including an obtaining unit and a sending unit, when After the mobile terminal or the fixed network device successfully accesses the network through the fixed network, the acquiring unit acquires the data flow description information and the DSCP marking rule corresponding to the data flow, and the sending unit sends the DSCP corresponding to the data flow. Marking the rule into the fixed network node, so that the fixed network node performs DSCP marking on the target data flow corresponding to the data flow according to the received DSCP marking rule, which can simplify the DSCP of the fixed network node.
  • the tag processing logic enables the fixed network node to receive an explicit signaling indication for proper processing of the DSCP value of the IP header of the target data stream under fixed network access conditions.
  • the policy entity obtains a data flow type and a DSCP marking rule corresponding to the data flow type, and sends a DSCP marking rule corresponding to the data flow type to the fixed network node, and the fixed network node receives the DSCP according to the received
  • the marking rule performs DSCP marking on the target data stream corresponding to the data stream type, which solves the problem that the processing logic of the existing fixed network node correspondingly marking the DSCP is not simple and flexible. The problem simplifies the processing logic of the fixed network node to mark the DSCP accordingly, and also increases the flexibility of the processing logic.

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Abstract

本发明适用于MACROBUTTON网络技术领域,提供了一种DSCP的标记处理方法、系统及策略实体,所述方法包括:当移动终端或固网设备通过固网成功接入网络后,策略实体获取数据流类型及与该数据流类型对应的DSCP标记规则,发送与该数据流类型对应的DSCP标记规则至固网节点中;固网节点根据接收到的DSCP标记规则,对与目标数据流执行DSCP标记。通过策略实体发送针对固网设备或者移动终端对应的DSCP标记规则,使得固定网络节点能够清楚了解对固网设备或者移动终端的对应的数据流进行合适的DSCP标记,固定网络节点处理操作得到简化,且能够灵活、有效实施DSCP标记策略,也有助于合理利用网络资源等。

Description

一种DSCP的标记处理方法、系统及策略实体 技术领域
本发明属于 MACROBUTTON 网络技术领域,尤其涉及一种 DSCP 的标记处理方法、 系统及策略实体。
背景技术
在 WLAN ( Wireless Local Area Networks ,无线局域网络)的服务器到浏览器接入的场景下,数据流不仅仅需要在 ePDG ( Eolved Packet Data Gateway ,演进的分组数据网关)对应的中心网络路径上具有 QoS ( Quality of service ,服务质量)保证,而且在固定网络这一段,也需要保证端到端的 QoS 。在 WLAN 接入场景下的 QoS 互通的网络架构中, BPCF ( Broadband Policy Control Function ,宽带策略控制功能)和 PCRF ( Policy and Charging Rule Function ,策略和计费规则功能)之间建立标准定义接口,通过 PCRF 向 BPCF 请求可用的宽带固网资源,从而建立端到端的 QoS 保证。 在固定网络节点(例如 BNG ( Broadband Network Gateway ,宽带网络网关)或者 BRAS ( Broadband Remote Access Server ,宽带远程接入服务器 ) 、 TWAG ( Trusted WLAN Access Gateway ,可信 WLAN 接入网关)等)上, IP 数据包包头 DSCP ( Differentiated Service Code Point ,差分服务点码)值是一个重要的参数。 DSCP 属于 IETF ( Internet Engineering Task Force ,互联网工程任务组)的 DiffServ ( Differentiated Service ,区分服务)体系技术,即每个传输报文在网络传输中被分为不同的类别,分类的信息包含在 IP 报文头中。 DiffServ 体系使用 IP 报文头中的 TOS ( Type of Service ,服务类型)中的前 6 个比特来携带报文的分类信息,这 6 个比特称作 DSCP 值。当然这些报文的分类信息也可以携带在链路层报文头上。各交换机和路由器根据 DSCP 值所标识的分类信息采取适合的传输服务策略,如提供不同的传输优先级,不同的预留带宽,丢弃一些重要性较低的报文等。以这些 DSCP 点码信息为基础,网络节点进行包括分类、策略、标记、排队、调度等操作。
目前,对 DSCP 标记的规则主要分为两种:一是,固定网络节点上(例如 BNG ),对于访问 PS ( Packet Switching ,分组交换)核心网数据流的 IP 数据包外层 DSCP 值的标记(以下行数据包为例)可以根据来自移动网络网元的数据包的 DSCP 值来进行映射的,也即根据 QoS 规则标记;二是,对于本地卸载的数据流,在 BNG 上的处理是基于 BNG 从 BPCF 收到的 QoS 规则中的 QCI ( QoS Class Identifier , QoS 类别标识)值,对于 QoS 规则中的目标数据流级别的所有数据包进行 DSCP 值的标记,也即根据 PCC(Policy and Charging Control ,策略和计费控制 ) 规则标记,该两种标记规则的对照表可以预配置在 BNG 节点上。
现有技术中,在固网接入条件下,固定网络节点(例如 BNG 或者 BRAS ,现有技术中缺少在固网节点 TWAG 上进行 DSCP 标记的机制)或称固网节点对于 IP 数据包包头不同的 DSCP 值的标记处理的机制需要严格区分移动终端的哪些数据流是 PS 数据流,哪些数据流是本地卸载数据流,进而应用不同的 DSCP 值标记的规则等,因而 BNG 需要实时地收到明确的指示,来决定对于 IP 数据包包头 DSCP 的处理方式,使得固网节点的处理逻辑较为复杂,且处理方式不够灵活等。
技术问题
本发明实施例的目的在于提供 一种 DSCP 的标记处理方法 、系统及策略实体 ,旨在解决 固定网络节点 对 DSCP 进行相应标记的处理逻辑不够简单、灵活的问题。
技术解决方案
本发明实施例是这样实现的,一种 DSCP 的标记处理方法,所述方法包括:
当 移动终端或固网设备通过固网成功接入网络后, 策略实体获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至固网节点中;
所述固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
本发明实施例的另一目的在于提供一种 DSCP 的标记处理 系统 ,所述 系统 包括 固网节点以及策略实体,其中:
所述策略实体,用于当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至所述固网节点中;以及
所述固网节点,用于根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
本发明实施例的另一目的在于提供一种 策略实体 , 所述策略实体包括:
获取单元,用于 当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与所述数据流类型对应的 DSCP 标记规则;以及
发送单元,用于 发送与所述数据流类型对应的 DSCP 标记规则至固网节点中,以使所述固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
有益效果
本发明实施例通过在 移动终端或固网设备通过固网成功接入网络时, 策略实体获取数据流类型及与该数据流类型对应的 DSCP 标记规则,发送与该数据流类型对应的 DSCP 标记规则至固网节点中,而固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记,解决了现有固定网络节点 对 DSCP 进行相应标记的处理逻辑不够简单、灵活 的问题,使得固定网络节点的 DSCP 标记处理逻辑得到简化、灵活性得到提高等。
附图说明
图 1 是本发明第一实施例提供的 DSCP 的标记处理方法 的实现流程图;
图 2 是本发明第二实施例提供的 DSCP 的标记处理方法 的实现流程图;
图 3 是本发明第三实施例提供的 DSCP 的标记处理方法 的实现流程图;
图 4 是本发明第四实施例提供的 DSCP 的标记处理方法 的实现流程图;
图 5 是本发明第五实施例提供的 DSCP 的标记处理方法 的实现流程图;
图 6 是本发明第六实施例提供的 DSCP 的标记处理系统 的结构图;
图 7 是本发明第七实施例提供的 DSCP 的标记处理系统 的结构图;
图 8 是本发明第八实施例提供的策略实体的结构图。
本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
本发明实施例通过策略实体发送针对固网设备或者移动终端对应的 DSCP 标记规则,使得固定网络节点能够清楚了解对固网设备或者移动终端的对应的数据流进行合适的 DSCP 标记,固定网络节点处理操作得到简化,且能够灵活、有效地实施 DSCP 标记策略,也有助于合理利用网络资源等。
以下结合具体实施例对本发明的具体实现进行详细描述:
实施例一:
图 1 示出了本发明第一实施例提供的 DSCP 的标记处理方法 的实现流程,详述如下:
在步骤 S101 中,当 移动终端或固网设备通过固网成功接入网络后, 策略实体获取数据流类型及与该数据流类型对应的 DSCP 标记规则,并发送与该数据流类型对应的 DSCP 标记规则至固网节点中。
其中,该策略实体为 BPCF 、融合 PCRF 或者包含该 BPCF 功能的其他策略实体,该包含该 BPCF 功能的其他策略实体为除融合 PCRF 以外的策略实体,而 该 融合 PCRF 为同时具有该 BPCF 与 PCRF 功能的策略实体,也即同时具有策略和计费规则功能和宽带策略控制功能,一般用在移动和固定网络域融合场景下。该数据流类型为该移动终端的分组交换数据流 或本地卸载数据流、或者 该 固网设备 的数据流中的一种类型,而策略实体能够根据该数据流类型生成包含数据流描述信息的 DSCP 标记规则,该描述信息具体包括数据流的源 IP 、目的 IP 、源端口、目的端口、协议类型等。另外, 该 DSCP 标记规则可以包括在 PCC 规则或者 QoS 规则中,而 QoS 规则或者 PCC 规则由 PCRF 并行产生,或者该 DSCP 标记规则直接由该 PCRF 生成,并 PCC 规则等一起并行发送到固网节点等,其中该 PCC 规则为针对移动终端本地卸载或者访问数据流或者固定设备相关数据流的策略,而该 QoS 规则为针对移动终端的 PS 数据流的策略。
在本发明实施例中,该固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG ,其中,在具体应用场景中,只存在 BNG 或者 TWAG 与 BNG 同时存在两种情况。在 TWAG 与 BNG 同时存在的情况下,该两个固网节点可以都对相应的数据流进行 DSCP 标记,也可以只有一个固网节点进行 DSCP 标记。
在具体实施过程中,根据策略实体发送的上述数据流描述信息或者其他的信息(例如,接入点网络标识 Access Point Network APN ,会话类型,路由表信息等)能够对需要标记的目标数据流进行 DSCP 标记,从而该策略实体能够区分不同的接入设备以及不同的数据访问方式,比如,当获取到数据流类型对应访问分组交换 PS 数据流时,则获取并发送与该 PS 数据流对应的 DSCP 标记规则至该固网节点,且该 DSCP 标记规则可以包括在 PCC 规则中,也可以作为独立的规则和 PCC 规则并行传输和使用,该 DSCP 标记规则可以用于指示固网节点 BNG 和 / 或 TWAG 根据所述固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点 BNG 和 / 或 TWAG 将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点 BNG 和 / 或 TWAG 保持目标数据流的 DSCP 值不变等,具体可以根据实际情况预先设定。
作为本发明一实例,当策略实体为 BPCF 或者包含该 BPCF 功能的其他策略实体时 ,该 步骤 S101 具体包括以下步骤:
该 策略实体与 PCRF 建立 IP-CAN 会话后,从该 PCRF 获取与本地卸载数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至固网节点,以使该固网节点根据该 DSCP 标记规则,对该本地卸载数据流进行 DSCP 标记;
或者,在该移动终端与移动分组数据网关建立连接,且该策略实体与 PCRF 建立网关控制会话后,从 PCRF 获取与分组交换数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至固网节点,以使该固网节点根据该 DSCP 标记规则,对该分组交换数据流进行 DSCP 标记。
此时,该策略实体发送 DSCP 标记规则或者发送去激活 DSCP 标记规则至固网节点 BNG 和 / 或 TWAG 具体包括:对于本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 BNG 的接口(例如预定义的 R 接口或者 Gxd 接口)将所述 DSCP 标记规则发送至固网节点 BNG ;或者,对于 WLAN 可信接入中 TWAG 和 BNG 分离的场景下的本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 TWAG 的接口(本发明实施例中假定为 P 接口)将所述 DSCP 标记规则直接发送至固网节点 TWAG ;或者,对于 WLAN 可信接入中 TWAG 和 BNG 分离的场景下的本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 BNG 的接口将所述 DSCP 标记规则发送至固网节点 BNG ,再由固网节点 BNG 进一步通过 BNG 和 TWAG 之间的接口(本发明实施例中设为 X 接口)将 DSCP 标记规则发送至固网节点 TWAG ;或者,对于 WLAN 可信接入场景下的分组交换数据流, 所述策略实体 通过移动分组数据网关和 TWAG 之间的接口向 TWAG 发送承载的 QCI 信息,以使 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
通过以上的方法,固网节点 BNG 和 / 或 TWAG 可以获得 DSCP 标记的规则信息,以在 BNG 和 / 或 TWAG 上执行 DSCP 值的标记等。
其中,与该本地卸载数据流对应的 DSCP 标记规则为该 PCRF 直接实时返回的与该本地卸载数据流对应的 DSCP 标记规则,或者为该 IP-CAN ( IP 连接网络访问会话)建立回复或修改消息中所携带的 DSCP 标记规则;而与该分组交换数据流对应的 DSCP 标记规则为该 PCRF 实时返回的与该分组交换数据流对应的 DSCP 标记规则,或者为将该网关控制会话建立回复或修改消息中所携带的 DSCP 标记规则。
作为本发明另一实例,当策略实体为 BPCF 或者包含该 BPCF 功能的其他策略实体时 ,该 步骤 S101 具体包括以下步骤:
该 策略实体与 PCRF 建立 IP-CAN 会话后,从该 PCRF 获取与该本地卸载数据流对应的 PCC 规则,根据该 PCC 规则生成与该本地卸载数据流对应的 DSCP 标记规则,或者该策略实体根据该 PCC 规则生成独立于 PCC 规则的 DSCP 标记规则,并将该独立存在或者根据 PCC 规则生成的 DSCP 标记规则发送至固网节点 BNG 和 / 或 TWAG ,以使该固网节点 BNG 和 / 或 TWAG 根据该 DSCP 标记规则,对该本地卸载数据流进行 DSCP 标记;
或者,在该移动终端与移动分组数据网关建立连接,且 该 策略实体与 PCRF 建立网关控制会话后,从该 PCRF 获取与该本地卸载数据流对应的 QoS 规则,根据该 QoS 规则生成与该本地卸载数据流对应的 DSCP 标记规则,或者该策略实体根据该 QoS 规则生成独立于 QoS 规则的 DSCP 标记规则,并将该 DSCP 标记规则发送至固网节点 BNG 和 / 或 TWAG ,以使该固网节点根据该 DSCP 标记规则,对该分组交换数据流进行 DSCP 标记;
或者,在该 固网设备接入网络后, 该策略实体 直接生成与该固网设备数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至该 BNG , 以使该 BNG 根据该 DSCP 标记 规则 ,对该固网设备的数据流进行 DSCP 标记。
其中,与该本地卸载数据流对应的 DSCP 标记规则为包含在该 PCRF 直接实时返回的 PCC 规则中,再由策略实体根据该 PCC 规则生成与该本地卸载数据流对应的 DSCP 标记规则,或者为该 IP-CAN ( IP 连接网络访问会话)建立回复或修改消息中所携带的 DSCP 标记规则;而与该分组交换数据流对应的 DSCP 标记规则为包含在该 PCRF 直接实时返回的 QoS 规则中,再由策略实体根据该 QoS 规则生成与该分组交换数据流对应的 DSCP 标记规则,或者为将该网关控制会话建立回复或修改消息中所携带的 DSCP 标记规则。
另外,该 DSCP 标记处理方法还包括:
当检测到在该移动终端与移动分组数据网关的连接断开时,该策略实体根据该 PCRF 发送的网关控制会话结束消息,结束与 该 PCRF 的网关控制会话;
该策略实体发送去激活 DSCP 标记规则至该固网节点,以使该固网节点对该移动终端的分组交换数据流进行去激活 DSCP 标记规则的处理;
或者,当该策略实体检测到该策略实体和该 PCRF 之间的 IP-CAN 会话结束,发送去激活 DSCP 标记规则至该固网节点,以使该固网节点对该移动终端的分组交换数据流进行去激活 DSCP 标记规则的处理。
此时,所述策略实体发送所述 DSCP 标记规则或者发送去激活 DSCP 标记规则至固网节点 BNG 和或 TWAG 具体为:对于本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 BNG 的接口(例如 R 接口或者 Gxd 接口)将所述 DSCP 标记规则或去激活 DSCP 标记规则发送至固网节点 BNG ;或者,对于 WLAN 可信接入场景下的本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 TWAG 的接口(本发明假定为 P 接口)将所述 DSCP 标记规则或去激活 DSCP 标记规则直接发送至固网节点 TWAG ;或者,对于 WLAN 可信接入中 TWAG 和 BNG 分离的场景下的本地卸载数据流或者分组交换数据流,策略实体通过和固网节点 BNG 的接口将所述 DSCP 标记规则或去激活 DSCP 标记规则发送至固网节点 BNG ,再由固网节点 BNG 进一步通过 BNG 和 TWAG 之间的接口(本发明设为 X 接口)将 DSCP 标记规则或去激活 DSCP 标记规则发送至固网节点 TWAG ;或者,对于 WLAN 可信接入场景下的分组交换数据流, 所述策略实体 通过移动分组数据网关和 TWAG 之间的 S2a 接口向 TWAG 发送承载的 QCI 信息,以使 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
通过以上的方法,固网节点 BNG 和或 TWAG 可以获得 DSCP 标记的规则信息或去激活 DSCP 标记规则,以在 BNG 和或 TWAG 上执行 DSCP 值的标记。
作为本发明另一实例,当策略实体为该融合 PCRF 时 ,该 步骤 S101 具体包括以下步骤:
该融合 PCRF 与该固网节点 BNG 建立 IP-CAN 会话;
当获取数据流类型对应该移动终端的 本地卸载数据流时, 该融合 PCRF 生成并 发送与该本地卸载数据流对应的 DSCP 标记规则至该固网节点 BNG 和 / 或 TWAG ,以使该固网节点 BNG 和 / 或 TWAG 根据该 DSCP 标记规则,对该本地卸载数据流进行 DSCP 标记;
当获取的数据流类型对应该 固网设备 的数据流 时, 该融合 PCRF 生成并发送与该 固网设备 的数据流对应的 DSCP 标记规则至该固网节点 BNG ,以使该固网节点 BNG 根据该 DSCP 标记规则,对该 固网设备 的数据流进行 DSCP 标记;
或者,在该移动终端与移动分组数据网关建立连接,且 该融合 PCRF 与该 BNG 建立网关控制会话后,该 融合 PCRF 获取的数据流类型对应该移动终端的分组交换数据流 ,生成并 发送与该分组交换数据流对应的 DSCP 标记规则至该固网节点 BNG 和 / 或 TWAG ,以使该固网节点 BNG 和 / 或 TWAG 根据该 DSCP 标记规则,对该分组交换数据流进行 DSCP 标记。
其中, 数据流的类型可以基于数据流描述的信息或者基于其他的信息获取,例如, APN 标识信息、固网节点 BNG 或者 TWAG 和 PCRF 之间建立的会话类型信息、 PCRF 上的数据路由信息等。 与该本地卸载数据流对应的 DSCP 标记规则为该融合 PCRF 实时返回的与该本地卸载数据流对应的 DSCP 标记规则,或者为该 IP 连接网络访问会话建立回复或修改消息中所携带的 DSCP 标记规则;与该 固网设备 的数据流描述信息对应的 DSCP 标记规则为该融合 PCRF 实时返回的与该 固网设备 的数据流对应的 DSCP 标记规则,或者为该 IP 连接网络访问会话建立回复或修改消息中所携带的 DSCP 标记规则;与该分组交换数据流对应的 DSCP 标记规则为该融合 PCRF 实时返回的与该分组交换数据流对应的 DSCP 标记规则,或者为将该网关控制会话建立回复或修改消息中所携带的 DSCP 标记规则。
此时,所述融合 PCRF 发送所述 DSCP 标记规则至固网节点 BNG 和 / 或 TWAG 具体为:对于本地卸载数据流或者分组交换数据流或固网设备数据流,融合 PCRF 通过和固网节点 BNG 的接口(例如 Gxd 接口)将所述 DSCP 标记规则或者去激活 DSCP 标记规则发送至固网节点 BNG ;或者,对于 WLAN 可信接入场景下的本地卸载数据流或者分组交换数据流,融合 PCRF 通过和固网节点 TWAG 的接口(本发明设为 K 接口)将所述 DSCP 标记规则或者去激活 DSCP 标记规则发送至固网节点 TWAG ;或者,对于 WLAN 可信接入中 TWAG 和 BNG 分离的场景下的本地卸载数据流或者分组交换数据流,融合 PCRF 通过和固网节点 BNG 的接口(例如 Gxd 接口)将所述 DSCP 标记规则或者去激活 DSCP 标记规则发送至固网节点 BNG ,固网节点 BNG 进一步通过 BNG 和 TWAG 之间的接口(本发明设为 X 接口)将 DSCP 标记规则或者去激活 DSCP 标记规则发送至固网节点 TWAG ;或者,对于 WLAN 可信接入场景下的分组交换数据流, 所述融合 PCRF 通过移动分组数据网关和 TWAG 之间的 S2a 接口向 TWAG 发送承载的 QCI 信息,以使 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
在步骤 S102 中,该固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
由于该 DSCP 标记规则可以用于指示固网节点根据所述固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变等,则该步骤 S102 具体为:
该固网节点根据该 DSCP 映射表,对该目标数据流的每个数据包进行 DSCP 值映射,或者将每个数据流的 DSCP 值标记成该通过 DSCP 值直接指示或者通过 QCI 值间接指示的 DSCP 值,或者保持该目标数据流的 DSCP 值不变。
在本发明实施例中,该策略实体为 BPCF 、融合 PCRF 或者包含该 BPCF 功能的其他策略实体时,对应的具体 DSCP 标记处理过程在下述实施例二、实施例三、实施例四等中的进行了详细说明,在此不再赘述。
在本发明实施例中, 由策略实体下发对当前访问的数据流进行标记的 DSCP 标记规则,能够针对不同的数据流发送相应的 DSCP 标记规则,固网节点只需要根据接收到的来自策略实体发送的 DSCP 标记规则,就可以对相应的数据流进行 DSCP 值标记,使得固网节点清楚知道对移动终端或者固网设备的不同数据流的 DSCP 标记规则,从而对于该数据流的每个 IP 包头的 DSCP 值进行合适的处理,简化了固定网关的处理逻辑,也提高了固定网络节点对 DSCP 值标记的灵活性 。
实施例二:
图 2 示出了本发明第二实施例提供的 DSCP 的标记处理方法 的实现流程,具体为当策略实体为 BPCF 时,通过固定网络接入的设备为移动终端时,以固网节点为 BNG 为例,该 DSCP 的标记处理方法 的具体实现过程,详述如下:
在步骤 S21 中,移动终端通过固定网络域向 HSS/AAA 服务器发送接入网络请求 。
在步骤 S22 中,该固定网络域中的 BNG 对该移动终端进行接入认证 。
具体地,该 BNG 可以对该移动终端进行 EAP-AKA 的认证,该 EAP-AKA 是应用于 3G 网络的身份认证和密钥分配协议,且在认证成功后,该移动终端将会获取分配的本地 IP 网络地址。
在步骤 S23 中,在认证成功后,该 BNG 向 BPCF 发送触发建立 IP 连接网络访问会话的消息 。
在步骤 S24 中,该 BPCF 根据该消息,获取当前数据流类型为 本地卸载数据流类型,并 与 PCRF 建立 IP 连接网络访问会话 。
在步骤 S25 中,该 PCRF 发送与本地卸载数据流对应的 DSCP 标记规则至该 BPCF 中 。
其中, 该 DSCP 标记规则可以为指示 DSCP 标记所需的映射表或指示标记后的 DSCP 值等。 具体地,该 PCRF 提供对于本地卸载数据流的 PCC 规则,该规则中包含相关的 DSCP 标记策略,则该 PCRF 将该 PCC 规则下发至 BPCF 。当然该 PCRF 也可以直接将 DSCP 标记策略与 PCC 规则并行下发至 BPCF 。
在步骤 S26 中,该 BPCF 接收该 DSCP 标记规则,并将该 DSCP 标记规则发送至该 BNG ,以使该 BNG 对该移动终端的本地卸载数据流进行 DSCP 标记 。
在具体实施过程中,在 该 BPCF 与 PCRF 成功建立 IP 连接网络访问会话后,该 IP 连接网络访问会话中可以携带 DSCP 标记规则,从而该 BPCF 也可以直接从该 IP 连接网络访问会话管理(建立回复、修改等)消息中实时获取与本地卸载数据流对应的 DSCP 标记规则,以触发 BNG 对移动终端的本地卸载数据流进行 DSCP 标记的功能。具体地,该 DSCP 标记规则可以包括在 PCC 规则中,也即由该 PCRF 将包含 DSCP 标记规则的 PCC 规则下发至 BPCF 中,从而该 BPCF 根据该 PCC 规则获取与本地卸载数据流对应的 DSCP 标记规则;或者该 DSCP 标记规则也可以作为独立的个体使用,也即由 PCRF 直接下发与本地卸载数据流对应的 DSCP 标记规则至 BPCF 中,从而该 BPCF 直接可以转发该 DSCP 规则至 BNG 中,具体可以根据实际情况预先设定。进一步地,该指示 DSCP 标记所需的映射表可以为根据 QCI 规则建立的标记指示,若该 PCC 规则中不含有 QCI 规则,而是直接包含指示标记后的 DSCP 值,也即在 BPCF 或者 PCRF 上预先进行了根据 QCI 规则获取标记后的 DSCP 值,则 BNG 在接收到该指示标记后的 DSCP 值后,直接对移动终端的每一本地卸载数据流进行 DSCP 的标记。
在步骤 S27 中,该移动终端与移动分组数据网关 PDN GW 建立连接 。
在步骤 S28 中,该 PDN GW 触发与该 PCRF 建立 IP 连接网络访问会话 。
其中,该 IP 连接网络访问会话不同于步骤 S23 中 BPCF 与 PCRF 之间的连接,而是与移动终端的 PS 分组交换数据访问相关。
在步骤 S29 , PCRF 触发与该 BPCF 建立网关控制会话 。
在步骤 S210 中,该 PCRF 下发与分组交换数据流对应的 DSCP 标记规则至该 BPCF 中 。
在步骤 S211 中,该 BPCF 接收该 DSCP 标记规则,并将该 DSCP 标记规则发送至该 BNG ,以使该 BNG 对该移动终端的分组交换数据流进行 DSCP 标记 。
其中,作为步骤 S29 、 S210 、 S211 的替代实例,对于 WLAN 可信接入 TWAG 和 BNG 分离的场景下 的分组交换数据流, PCRF 还可以 通过移动分组数据网关和 TWAG 之间的 S2a 接口向 TWAG 发送承载的 QCI 信息,以使 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
具体地,该 PCRF 可以向该 BPCF 提供分组交换业务数据相关的 QoS 规则,并该 QoS 规则下发至该 BPCF 中,此时该 QoS 规则中包含与分组交换数据流对应的 DSCP 标记规则,则该 BPCF 根据该 QoS 规则获取与分组交换数据流对应的 DSCP 标记规则;或者 DSCP 标记规则也可以作为独立的个体使用,也即由 PCRF 直接下发与分组交换数据流对应的 DSCP 标记规则至 BPCF 中,从而该 BPCF 直接可以转发该 DSCP 规则至 BNG 。
在具体实施过程中,在步骤 S29 之后, BPCF 触发向 BNG 发送网关控制会话管理(包括建立回复、修改等)消息,该消息中包括 DSCP 标记 规则 或者 DSCP 映射指示,以及分组交换数据流的描述信息(例如以移动终端和 EPDG 的地址为五元组地址信息)等,以触发 BNG 激活对移动终端进行分组交换访问的数据流按照映射指示进行 DSCP 值标记等。
进一步地,对于 WLAN 可信接入中 TWAG 和 BNG 分离的场景下的本地卸载数据流或者分组交换数据流, BPCF 可以通过和固网节点 BNG 的接口将 DSCP 标记规则发送至固网节点 BNG ,固网节点 BNG 进一步可以通过 BNG 和 TWAG 之间的接口将 DSCP 标记规则发送至固网节点 TWAG 。 此时,该 DSCP 标记规则可以直接是上述步骤 S211 中 BNG 从 PCRF 收到的 DSCP 标记规则,也可以是基于上述步骤 S211 中的该 DSCP 标记规则进一步生成的新的 DSCP 规则。
在本发明实施例中, 该 PCRF 上由于一些条件的触发,比如,检测到签约数据的改变、网络拥塞状态的改变、用户剩余额度的改变、 PCRF 上的本地策略或者因为检测到某些特殊的数据流等,则会更新下发到 DSCP 标记规则,则该 BPCF 接收到的 DSCP 标记为实时获取的、最新的 DSCP 标记规则,从而能够更灵活、准确地的下发标记规则。也即该 BPCF 能够实时地向 BNG 和 / 或 TWAG 发送 DSCP 标记规则,以使 BNG 和 / 或 TWAG 激活对移动终端的相关数据流进行 DSCP 值标记。另外,该 DSCP 标记规则也可以包括在 PCC 规则或是 QoS 规则中,在 BNG 收到该规则后,根据该 PCC 规则或是 QoS 规则中的标记指示,以每终端的粒度来激活 BNG 上预先配置的具体的 DSCP 标记映射表等,标记的具体方式包括对每个 IP 数据包逐个进行 DSCP 映射、根据 QCI 值标记数据流的 DSCP 值、保持 DSCP 不变或者将对应数据流的 DSCP 值标记成所指示的值等。
在本发明实施例中,当策略实体为包含该 BPCF 功能的其他策略实体时,可以将包含该 BPCF 功能的其他策略实体替代上述该 BPCF ,经过上述步骤实现 BNG 或者 TWAG 对数据流的 DSCP 标记处理等操作,在此不再赘述。
需要说明的是,当在 固网设备接入网络后, 该 BPCF 或者包含该 BPCF 功能的其他策略实体 直接生成与该固网设备数据流对应的 DSCP 标记规则,而不会利用到该 PCRF ,或者说不会包括在 PCRF 下发的 PCC 规则或 QoS 规则中,并将该 DSCP 标记规则发送至 BNG , 以使该固网节点 BNG 根据该 DSCP 标记 规则 ,对该固网设备的数据流进行 DSCP 标记。
进一步地, BNG 或者 TWAG 需要在适当的时候对 DSCP 标记规则进行去激活或者无效。比如,在图 2 中,在移动终端访问分组交换数据的所有 PDN 连接断开的时候, PCRF 将触发向 BPCF 发送网关控制会话结束消息,同时也会下发更新后的 QoS 规则,该 QoS 规则此时用于通知固网释放网络资源等等,而 BPCF 收到该网关控制会话结束消息后,结束与 该 PCRF 的网关控制会话,并向 BNG 或者 TWAG 发送去激活 DSCP 标记规则,则使得 BNG 或者 TWAG 为移动终端的分组交换数据流进行去激活 DSCP 映射标记处理等。此时, BNG 还对终端所有本地卸载数据流去激活了 DSCP 标记功能。
实施例三:
图 3 示出了本发明第三实施例提供的 DSCP 的标记处理方法 的实现流程,具体为当策略实体为融合 PCRF 时,通过固定网络接入的设备为移动终端时,以固网节点为 BNG 为例,移动终端通过固定网络域向 HSS/AAA 服务器发送接入网络请求,该固定网络域中的 BNG 对该移动终端进行接入认证,在认证成功后,该 DSCP 的标记处理方法 的具体实现过程,详述如下:
在步骤 S31 中,该 BNG 向融合 PCRF 发送触发建立 IP 连接网络访问会话 。
在步骤 S32 中,该融合 PCRF 根据该消息,与该 BNG 建立 IP 连接网络访问会话。
在步骤 S33 中,该融合 PCRF 获取当前数据流描述信息为 本地卸载数据流 描述信息 ,生成并 发送与本地卸载数据流描述信息对应的 DSCP 标记规则至该 BNG 中 。
在步骤 S34 中,该 BNG 根据该 DSCP 标记规则,对该本地卸载数据流进行 DSCP 标记。
在具体实施过程中,该网络节点 BNG 触发向该融合 PCRF 的 IP-CAN 会话建立过程,该 IP-CAN 会话将为本地卸载的提供 DSCP 标记规则或者提供包含 DSCP 标记规则的 PCC 规则,该 PCC 规则可以增强包括现有机制的 QCI 标识、宽带大小等,也可以新增 DSCP 标记规则,另外,该本地卸载的提供 DSCP 标记规则或者提供包含 DSCP 标记规则的 PCC 规则也可以由 PCRF 下发到该 BNG 。在本发明实施例中,由于该融合 PCRF 包括 BPCF 的功能,则 BNG 端收到的均是对移动终端当前数据流的明确具体的标记指示,也即此时 BNG 能够激活对移动终端的当前全部数据流根据 QCI 进行 DSCP 的标记功能,该 DSCP 标记规则可以包括按照 QCI 进行标记,或者保持 DSCP 值不变,或者指示一个 DSCP 值等。
在步骤 S35 中,在该移动终端与移动分组数据网关建立连接, 该融合 PCRF 与该移动分组数据网关建立 IP-CAN 会话。
在步骤 S36 中,融合 PCRF 与 BNG 建立网关控制会话。
在步骤 S37 中,该融合 PCRF 获取当前数据流描述信息为分组交换 数据流 描述信息, 生成并 发送与该分组交换数据流描述信息对应的 DSCP 标记规则至该固网节点 BNG 。
其中,该 与该分组交换数据流描述信息对应的 DSCP 标记规则也可以包括在 QoS 规则中,由该融合 PCRF 将该 QoS 规则下发至该 BNG 。 具体地,在此时网关控制会话建立成功后, PCRF 触发向 BNG ( Gxd 接口)发送 PS 业务数据相关的 QoS 规则的消息。
在步骤 S38 中,该固网节点根据该 DSCP 标记规则,对该分组交换数据流进行 DSCP 标记。
在具体实施过程中,移动 终端建立分组数据网络 PDN 连接建立过程。 移动分组数据网关 PDN GW 向融合 PCRF 触发 IP-CAN 会话建立的过程,不同于步骤 31 所述的 IP-CAN 会话,步骤 38 的 IP-CAN 会话是建立在 PDN GW 和该融合 PCRF 之间,是和移动终端 PS 数据访问相关的。进一步该 PCRF 触发向 BNG 的网关控制会话建立的过程。在网关控制会话建立请求消息中,或者在该融合 PCRF 向 BNG 提供 PS 业务数据相关的 QoS 规则的消息中,均包括 DSCP 映射指示,以及 PS 数据流的描述信息(例如以 UE 和 ePDG 的地址为五元组地址信息),以触发 BNG 激活对 UE 进行 PS 访问的的数据流根据指示的映射表进行 DSCP 的映射功能。对于对每个 IP 包逐个进行 DSCP 映射的场景,进一步包括在 DSCP 标记规则中指示映射表的标识,例如,指示 BNG 根据预设表 A 而不是其他的例如表 B 来进行 DSCP 映射等。
在本发明实施例中,当获取的数据流描述信息为 属于固网设备 的数据流描述信息 时, 该融合 PCRF 生成并发送与该 固网设备 的数据流描述信息对应的 DSCP 标记规则至固网节点 BNG ,以使该固网节点 BNG 根据该 DSCP 标记规则,对 BNG 的数据流进行 DSCP 标记,具体标记方法包括按照 QCI 进行标记,或者保存 DSCP 值不变,或者按照融合 PCRF 的指示对固网设备所有的数据流标记一个 DSCP 值,或者该 BNG 上实施默认的或者预先配置的 DSCP 标记规则等。
在本发明实施例中,该融合 PCRF 通过向 BNG 传递 DSCP 标记规则,实现了对固定设备和移动终端的灵活的 DSCP 标记规则的设定,能够使得 BNG 始终清楚的了解对于每个固定设备和移动终端的具体的 DSCP 值的标记策略,一切决策点在融合 PCRF ,又有助于针对每个设备实现差异化控制。
实施例五:
图 5 示出了本发明第五实施例提供的 DSCP 的标记处理方法 的实现流程, 在本发明实施例中,介于上述实施例二、实施例三中策略实体对于向 BNG 传递 DSCP 标记规则的描述只是在移动终端或者固定网络接入设备(固网设备)初始入网的节点,事实上,策略实体也可以在不同的场景或者网络不同的拥塞状态下等向 BNG 触发发送 / 更新 DSCP 标记规则,以策略实体为融合 PCRF 为例, 详述如下:
在步骤 S501 中 , 融合 PCRF 在检测到预设条件满足时,生成更新后的与获取的数据流类型对应的 DSCP 标记规则。
具体地,该融合 PCRF 上由于一些条件的触发,包括但不限于签约数据的改变、网络拥塞状态的改变、用户剩余额度的改变、该融合 PCRF 上的本地策略或者因为检测到某些特殊的数据流等(例如,该融合 PCRF 从数据检测功能得知当前用户使用了某项应用,例如 P2P ;而对用户进行惩罚,将 P2P 应用的 DSCP 值进行特殊的处理,例如,将 P2P 应用的 IP 头 DSCP 值 置为较低的值)。该融合 PCRF 触发对移动终端或者固网设备的 DSCP 标记策略的更新,这个更新可以以移动终端或固网设备所获得的 IP 地址或者虚拟本地区域网络( VLAN Virtual Local Area Network )标识为粒度,或者以更加细粒度的数据包的 IP 五元组描述来描述需要进行 DSCP 策略更新的目标数据流。
在步骤 S502 中,该融合 PCRF 向移动终端或者固网设备发送更新后的 DSCP 标记规则。
具体地地,该融合 PCRF 通过和 BNG 间的 Gxd 接口,以 IP-CAN 会话修改消息的形式,向 BNG 发送更新后的 DSCP 标记规则。而对于移动终端的 PS 数据流,该融合 PCRF 以和 BNG 之间的网关控制会话修改消息的形式来发送更新后的 DSCP 标记规则至 BNG 中,其中,该更新后的 DSCP 标记规则可以作为单独的个体(需要至少包含目标数据流描述的信息和需要标记的 DSCP 值信息)。或者作为 PCC 规则或者 QoS 规则的一部分。
在步骤 S503 中,该 BNG 根据接收到的 DSCP 标记规则,对移动终端或者固网设备的目标数据流进行标记。
具体地, BNG 收到 IP-CAN 会话修改消息或者网关控制会话修改消息,根据其中的 DSCP 标记规则,更新当前的移动终端 / 固网设备数据的 DSCP 标记规则,以 IP 地址 + 端口粒度,或者以 VLAN (虚拟本地区域网络, Virtual Local Area Network )标识为粒度。
在本发明实施例中,固网节点 BNG 始终清楚的了解对于每个固定设备或移动终端的具体的 DSCP 值的标记规则,一切决策点在该融合 PCRF ,也即由该融合 PCRF 生成标记规则,有助于针对每个设备实现差异化控制。例如,融合 PCRF 对于固网设备在网络拥塞的状态下,采用较低的 DSCP 优先级标记,而对于移动终端的本地访问数据,则采用较高的 DSCP 优先级标记。而在网络状态较好的情况下(例如,固网资源比较充裕时)采用遵循原始 DSCP 标记的方式,当 BNG 收到数据包时,并不对 DSCP 标记做任何额外处理,只是按照原值处理、转发,从而节省了节点的处理。通过以上的方法,融合 PCRF 或者其他策略实体都能够通过向 BNG 或者 TWAG 发送更新后的 DSCP 标记规则,实现对固定设备和移动终端的 DSCP 标记规则的灵活实施。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,所述的程序可以存储于一计算机可读取存储介质中,所述的存储介质,如 ROM/RAM 、磁盘、光盘等。
实施例六:
图 6 示出了本发明第六实施例提供的 DSCP 的标记处理系统 的结构,为了便于说明,仅示出了与本发明实施例相关的部分。
该 DSCP 的标记处理 系统包括固网节点 61 以及策略实体 62 ,其中:
该策略实体 61 ,用于当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与该数据流类型对应的 DSCP 标记规则至该固网节点 62 中;以及
该固网节点 62 ,用于根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
其中,该策略实体为 BPCF 、融合 PCRF 或者包含该 BPCF 功能的其他策略实体, 该 融合 PCRF 为同时具有该 BPCF 与 PCRF 功能的策略实体 。该 数据流类型对应为该移动终端的分组交换数据流 或本地卸载数据流、 该 固网设备 的数据流中的一种。该述固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG 。
在本发明实施例中,通过策略实体向 BNG 或者 TWAG 发送对于移动终端或者固网设备的 DSCP 标记规则, 解决了 固定网络节点 对 DSCP 进行相应标记的处理逻辑不够简单、灵活 的问题,使得 BNG 或者 TWAG 始终清楚的了解对于每个规定设备和移动终端的具体地 DSCP 值的标记策略,能够达到对固网设备和移动终端的灵活 DSCP 标记策略的功能的目的,也有助于合理利用网络资源等。
在本发明实施例中,当策略实体 61 为融合 PCRF 时 , 该策略实体 61 具体包括:
访问会话建立单元,用于与该 BNG 建立 IP-CAN 会话;
规则生成及发送第四单元,用于 当获取数据流类型对应该移动终端的 本地卸载数据流时,生成并 发送与该本地卸载数据流对应的 DSCP 标记规则至该固网节点;
规则生成及发送第五单元,用于 当获取的数据流类型对应该 固网设备 的数据流 时, 生成并发送与该 固网设备 的数据流对应的 DSCP 标记规则至该 BNG ;
或者,该策略实体 61 具体包括:
控制会话建立 单元,用于 在该移动终端与移动分组数据网关建立连接后,与该 BNG 建立网管控制会话;
规则生成及发送第六单元,用于 获取的数据流类型对应该移动终端的分组交换数据流时 ,生成并 发送与该分组交换数据流对应的 DSCP 标记规则至该固网节点。
而当策略实体 61 为 BPCF 或者包含该 BPCF 功能的其他策略实体时 , 本发明提供的 DSCP 的标记处理系统的结构如下述实施例七所述,在此不再赘述。
其中,上述 DSCP 标记规则用于指示固网节点 62 根据该固网节点 62 上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点 62 将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点 62 保持目标数据流的 DSCP 值不变。
此时,该固网节点 62 具体用于根据该 DSCP 映射表,对该目标数据流的每个数据包进行 DSCP 值映射,或者将每个数据流的 DSCP 值标记成该通过 DSCP 值直接指示或者通过 QCI 值间接指示的 DSCP 值,或者保持该目标数据流的 DSCP 值不变。
本发明实施例提供了一种包括策略实体和固网节点的 DSCP 处理系统,通过策略实体将与数据流对应的 DSCP 标记规则下发至固网节点,该 DSCP 标记规则能指示 BNG 对数据包 / 数据流进行 DSCP 标记的方式,包括对每个 IP 包逐个进行 DSCP 映射,或者根据 QCI 值标记流的 DSCP ,或者保持 DSCP 不变,或者将对应数据流的 DSCP 值标记成所指示的值等,从而能够简化固网节点的处理逻辑等。
实施例七:
图 7 示出了本发明第七实施例提供的 DSCP 的标记处理系统 的结构,为了便于说明,仅示出了与本发明实施例相关的部分。
在本发明实施例中,以策略实体为包含 BPCF 功能的其他策略实体(但不限于该策略实体,比如还可以为 BPCF ),通过固定网络成功接入的设备为移动终端时,固网节点为 BNG 为例,移动终端通过固定网络域向 HSS/AAA 服务器发送接入网络请求,该固定网络域中的 BNG 对该移动终端进行接入认证,在认证成功后,该 DSCP 的标记处理 系统包括策略实体 71 及固网节点 72 ,该策略实体 71 具体包括访问会话建立 单元 711 、标记 规则 第一发送单元 712 、控制会话建立单元 713 以及标记 规则 第二发送单元 714 ,该固网节点与上述实施例五中所述固网节点 72 的功能完全对应,在此不再赘述 ,其中:
访问会话建立 单元 711 ,用于对本地卸载数据流 进行策略和计费控制 ,并 与 该 PCRF 建立 IP-CAN 会话 ;
标记 规则 第一发送单元 712 ,用于 从该 PCRF 获取与该本地卸载数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至该固网节点 72 ;
控制会话建立单元 713 ,用于 在该移动终端与移动分组数据网关建立连接后,对分组交换 数据流 进行策略和计费控制 ,并 与 该 PCRF 建立网关控制会话;以及
标记 规则 第二发送单元 714 ,用于 从 PCRF 获取与该分组交换数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至该固网节点 72 。
在本发明实施例中, 在 包含 BPCF 功能的其他策略实体通过访问会话建立 单元 711 与 PCRF 成功建立 IP 连接网络访问会话后,该 IP 连接网络访问会话中可以携带 DSCP 标记规则,再由 标记 规则 第一发送单元 712 直接从 PCRF 返回的该 IP 连接网络访问会话管理(建立回复、修改等)消息中实时获取与本地卸载数据流对应的 DSCP 标记规则,以触发固网节点 72 ( BNG )对移动终端的本地卸载数据流进行 DSCP 标记的功能。具体地,该 DSCP 标记规则可以包括在 PCC 规则中,也即由该 PCRF 将包含 DSCP 标记规则的 PCC 规则下发至包含 BPCF 功能的其他策略实体中,从而该包含 BPCF 功能的其他策略实体根据该 PCC 规则获取与本地卸载数据流对应的 DSCP 标记规则;或者该 DSCP 标记规则也可以作为独立的个体使用,也即由 PCRF 直接下发与本地卸载数据流对应的 DSCP 标记规则至包含 BPCF 功能的其他策略实体中,从而该包含 BPCF 功能的其他策略实体直接可以转发该 DSCP 规则至 BNG 中,具体可以根据实际情况预先设定。进一步地,该指示 DSCP 标记所需的映射表可以为根据 QCI 规则建立的标记指示,若该 PCC 规则中不含有 QCI 规则,而是直接包含指示标记后的 DSCP 值,也即在 BPCF 或者 PCRF 上预先进行了根据 QCI 规则获取标记后的 DSCP 值,则 BNG 在接收到该指示标记后的 DSCP 值后,直接对移动终端的每一本地卸载数据流进行 DSCP 的标记。
该 PCRF 还可以向该包含 BPCF 功能的其他策略实体提供分组交换业务数据相关的 QoS 规则,并该 QoS 规则下发至该包含 BPCF 功能的其他策略实体中,例如,在该移动终端与移动分组数据网关建立连接后,在该包含 BPCF 功能的其他策略实体通过 控制会话建立单元 713 获取到数据流描述信息类型为分组交换 数据流 描述信息 时, 与 该 PCRF 建立网关控制会话此时该 QoS 规则中包含与分组交换数据流对应的 DSCP 标记规则,则该 标记 规则 第二发送单元 714 根据该 QoS 规则获取与分组交换数据流对应的 DSCP 标记规则;或者 DSCP 标记规则也可以作为独立的个体使用,也即由 PCRF 直接下发与分组交换数据流对应的 DSCP 标记规则至包含 BPCF 功能的其他策略实体中,从而该包含 BPCF 功能的其他策略实体 BPCF 直接可以转发该 DSCP 规则至 BNG 。
另外,该包含 BPCF 功能的其他策略实体 触发向 BNG 发送网关控制会话管理(包括建立回复、修改等)消息,该消息中包括 DSCP 标记 规则 或者 DSCP 映射指示,以及分组交换数据流的描述信息(例如以移动终端和 EPDG 的地址为五元组地址信息)等,以触发 BNG 激活对移动终端进行分组交换访问的数据流按照映射指示进行 DSCP 值标记等。
在本发明实施例中,当策略实体 71 为包含该 BPCF 功能的其他策略实体时 , 该策略实体 71 还可以 包括:
访问会话建立 单元,用于 与 PCRF 建立 IP-CAN 会话;以及
规则生成及 发送第一单元,用于 从该 PCRF 获取与该本地卸载数据流对应的 PCC 规则,根据该 PCC 规则生成与该本地卸载数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至该固网节点 72 ;
或者,该策略实体 71 还包括:
控制会话建立单元,用于 在该移动终端与移动分组数据网关建立连接后,与 PCRF 建立网关控制会话;以及
规则生成及 发送第二单元,用于 从该 PCRF 获取与该分组交换数据流对应的 QoS 规则,根据该 QoS 规则生成与分组交换数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至该固网节点 72 。
在本发明实施例中,该策略实体 71 还可以包括:
规则生成及发送第三单元,用于 在该 固网设备接入网络后,生成与该固网设备数据流对应的 DSCP 标记规则,并将该 DSCP 标记规则发送至 BNG 。
在本发明实施例中,当在 固网设备接入网络后, BPCF 或者包含该 BPCF 功能的其他策略实体 直接生成与该固网设备数据流对应的 DSCP 标记规则,而不会利用到该 PCRF ,或者说不会包括在 PCRF 下发的 PCC 规则或 QoS 规则中,并将该 DSCP 标记规则发送至 BNG , 以使该固网节点 BNG 根据该 DSCP 标记 规则 ,对该固网设备的数据流进行 DSCP 标记。
在本发明实施例中, 该 策略实体 71 还包括:
会话结束单元,用于 当检测到在该移动终端与移动分组数据网关的连接断开时,根据该 PCRF 发送的网关控制会话结束消息,结束与 该 PCRF 的网关控制会话;以及
去激活发送单元,用于 发送去激活 DSCP 标记规则至该固网节点。
从而,通过 会话结束单元及去激活发送单元实现对移动终端或者固网设备中的数据流的去 DSCP 标记功能等,也即 BNG 需要在适当的时候对 DSCP 标记规则进行去激活或者无效。比如,在移动终端访问分组交换数据的所有 PDN 连接断开的时候, PCRF 将触发向 BPCF 发送网关控制会话结束消息,同时也会下发更新后的 QoS 规则,该 QoS 规则用于通知固网释放网络资源等等,而 BPCF 收到该网关控制会话结束消息后,利用 会话结束单元 结束与 该 PCRF 的网关控制会话,并利用 去激活发送单元 向 BNG 发送去激活 DSCP 标记规则,则使得 BNG 为移动终端的分组交换数据流进行去激活 DSCP 映射标记处理等。此时, BNG 还激活了对终端所有本地卸载数据流的 DSCP 标记的去激活处理功能。
在本发明实施例中,策略实体发送至固网节点的 DSCP 标记规则用于指示固网节点根据该固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变等,从而固网节点根据该 DSCP 映射表,对该目标数据流的每个数据包进行 DSCP 值映射,或者将每个数据流的 DSCP 值标记成该通过 DSCP 值直接指示或者通过 QCI 值间接指示的 DSCP 值,或者保持该目标数据流的 DSCP 值不变等,最终达到了通过策略实体向 BNG 发送 DSCP 标记规则或者更新后的 DSCP 标记规则等,对固定设备和移动终端的灵活的 DSCP 标记策略的实施的目的。
实施例八:
图 8 示出了本发明第八实施例提供的策略实体的结构,为了便于说明,仅示出了与本发明实施例相关的部分。
该策略实体包括 获取单元 81 以及发送单元 82 ,其中:
获取单元 81 ,用于 当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与该数据流类型对应的 DSCP 标记规则;以及
发送单元 82 ,用于 发送与该数据流类型对应的 DSCP 标记规则至固网节点中,以使该固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
其中,该策略实体为 BPCF 、融合 PCRF 或者包含该 BPCF 功能的其他策略实体, 该 融合 PCRF 为同时具有该 BPCF 与 PCRF 功能的策略实体 ; 该数据流类型为该移动终端的分组交换数据流 或本地卸载数据流、 该 固网设备 的数据流中的一种类型;该固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG ,在具体的连接架构中,该 BNG 可以单独应用,而该 TWAG 不可以,它必须和 BNG 同时存在。另外在 BNG 和 TWAG 同时出现但是分离的应用场景中,可以实现两者单独进行数据流的 DSCP 标记,也可以实现同时都对相应的目标数据流进行 DSCP 标记。
作为本发明一实例,当策略实体为 BPCF 或者包含该 BPCF 功能的其他策略实体时 , 在与 PCRF 建立 IP-CAN 会话后, 该 获取单元 81 具体用于从该 PCRF 获取与本地卸载数据流对应的 DSCP 标记规则;
或者,在所述移动终端与移动分组数据网关建立连接,且所述策略实体与 PCRF 建立网关控制会话后,该获取单元 81 具体用于从 PCRF 获取与分组交换数据流对应的 DSCP 标记规则。
作为本发明另一实例,当策略实体为 BPCF 或者包含该 BPCF 功能的其他策略实体时 ,
在与 PCRF 建立 IP-CAN 会话后,该获取单元 81 具体用于从该 PCRF 获取与该本地卸载数据流对应的 PCC 规则,根据该 PCC 规则生成与本地卸载数据流对应的 DSCP 标记规则;
或者,在与 PCRF 建立网关控制会话后,该获取单元 81 具体用于从该 PCRF 获取与该分组交换数据流对应的 QoS 规则,根据该 QoS 规则生成与分组交换数据流对应的 DSCP 标记规则;
或者,在 固网设备接入网络后, 该获取单元 81 具体用于 直接生成与该固网设备数据流对应的 DSCP 标记规则。
在对移动终端或者固网设备中的数据流进行 DSCP 标记处理之后,策略实体还包括:
会话结束单元 83 ,用于当检测到在该移动终端与移动分组数据网关的连接断开时,根据该 PCRF 发送的网关控制会话结束消息,结束与 该 PCRF 的网关控制会话;以及
去激活规则发送单元 84 ,用于发送去激活 DSCP 标记规则至该固网节点,以使该固网节点对该移动终端的分组交换数据流进行去激活 DSCP 标记规则的处理。
其中,该去激活规则发送单元 84 还用于当检测到与该 PCRF 之间的 IP-CAN 会话结束时,发送去激活 DSCP 标记规则至所述固网节点。
在本发明实施例中,当策略实体为该融合 PCRF 时 , 该获取单元 81 具体用于当获取数据流对应该移动终端的 本地卸载数据流时,生成 与该本地卸载数据流对应的 DSCP 标记规则;
当获取的数据流为 属于 该 固网设备 的数据流 时, 生成与该 固网设备 的数据流对应的 DSCP 标记规则至该 BNG ;
或者,在该移动终端与移动分组数据网关建立连接,且 该融合 PCRF 与该 BNG 建立网关控制会话后,获取的数据流描述信息为该移动终端的分组交换数据流描述信息时 ,生成 与该分组交换数据流描述信息对应的 DSCP 标记规则至该固网节点。
其中,上述 DSCP 标记规则用于指示固网节点根据该固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变。
在本发明实施例中,该策略实体的功能已在上述实施例中进行详细说明,在此不再赘述。而本发明实施例提供了一种包括获取单元及发送单元的策略实体,当 移动终端或固网设备通过固网成功接入网络后,获取单元 获取数据流描述信息及与该数据流对应的 DSCP 标记规则, 发送单元 发送与所述数据流对应的 DSCP 标记规则至固网节点中,以使该固网节点根据接收到的 DSCP 标记规则,对与该数据流对应的目标数据流执行 DSCP 标记,能够简化固网节点的 DSCP 标记处理逻辑,使得在固网接入条件下,固网节点能够收到明确的信令指示对于目标数据流的 IP 包头的 DSCP 值进行合适的处理。
本发明实施例通过在 移动终端或固网设备通过固网成功接入网络时, 策略实体获取数据流类型及与该数据流类型对应的 DSCP 标记规则,发送与该数据流类型对应的 DSCP 标记规则至固网节点中,而固网节点根据接收到的 DSCP 标记规则,对与该数据流类型对应的目标数据流执行 DSCP 标记,解决了现有固定网络节点 对 DSCP 进行相应标记的处理逻辑不够简单、灵活 的问题,从而简化了固定网络节点 对 DSCP 进行相应标记的处理逻辑,也提高了处理逻辑的灵活度 。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (23)

  1. 一种 DSCP 的标记处理方法 ,其特征在于,所述方法包括:
    当 移动终端或固网设备通过固网成功接入网络后, 策略实体获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至固网节点中;
    所述固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
  2. 如权利要求 1 所述的方法,其特征在于, 所述策略实体为 BPCF 、融合 PCRF 或者包含所述 BPCF 功能的其他策略实体, 所述 融合 PCRF 为同时具有所述 BPCF 与 PCRF 功能的策略实体 ; 所述数据流类型为所述移动终端的分组交换数据流 或本地卸载数据流、 所述 固网设备 的数据流中的一种类型;所述固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG 。
  3. 如权利要求 2 所述的方法,其特征在于, 当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 , 所述策略实体获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至固网节点中具体包括:
    所述 策略实体与 PCRF 建立 IP-CAN 会话后,从所述 PCRF 获取与本地卸载数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述本地卸载数据流进行 DSCP 标记;
    或者,在所述移动终端与移动分组数据网关建立连接,且所述策略实体与 PCRF 建立网关控制会话后,从 PCRF 获取与分组交换数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述分组交换数据流进行 DSCP 标记。
  4. 如权利要求 2 所述的方法,其特征在于, 当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 , 所述策略实体获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至固网节点中具体包括:
    所述 策略实体与 PCRF 建立 IP-CAN 会话后,从所述 PCRF 获取与所述本地卸载数据流对应的 PCC 规则,根据所述 PCC 规则生成与所述本地卸载数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述本地卸载数据流进行 DSCP 标记;
    或者,在所述移动终端与移动分组数据网关建立连接,且 所述 策略实体与 PCRF 建立网关控制会话后,从所述 PCRF 获取与所述分组交换数据流对应的 QoS 规则,根据所述 QoS 规则生成与所述分组交换数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述分组交换数据流进行 DSCP 标记;
    或者,在所述 固网设备接入网络后, 所述策略实体 直接生成与所述固网设备数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述 BNG , 以使所述 BNG 根据所述 DSCP 标记 规则 ,对所述固网设备的数据流进行 DSCP 标记。
  5. 如权利要求 2 所述的方法,其特征在于, 当策略实体为所述融合 PCRF 时 ,所述 策略实体获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至固网节点中具体包括:
    所述融合 PCRF 与所述 BNG 建立 IP-CAN 会话;
    当获取数据流类型对应所述移动终端的 本地卸载数据流时, 所述融合 PCRF 生成并 发送与所述本地卸载数据流对应的 DSCP 标记规则至所述固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述本地卸载数据流进行 DSCP 标记;
    当获取的数据流类型对应所述 固网设备 的数据流 时, 所述融合 PCRF 生成并发送与所述 固网设备 的数据流对应的 DSCP 标记规则至所述 BNG ,以使所述 BNG 根据所述 DSCP 标记规则,对所述 固网设备 的数据流进行 DSCP 标记;
    或者,在所述移动终端与移动分组数据网关建立连接,且 所述融合 PCRF 与所述 BNG 建立网关控制会话后,所述 融合 PCRF 获取的数据流类型对应所述移动终端的分组交换数据流 ,生成并 发送与所述分组交换数据流对应的 DSCP 标记规则至所述固网节点,以使所述固网节点根据所述 DSCP 标记规则,对所述分组交换数据流进行 DSCP 标记;
    或者,在所述移动终端依次通过所述 BNG 和所述 TWAG 与移动分组数据网关建立连接, 所述融合 PCRF 通过移动分组数据网关和所述 TWAG 之间的接口向所述 TWAG 发送承载的 QCI 信息,以使所述 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
  6. 如权利要求 2 所述的方法,其特征在于, 所述方法还包括:
    策略实体通过与所述 BNG 的接口将去激活 DSCP 标记规则发送至所述 BNG ;
    或者,策略实体通过与所述 TWAG 的接口将去激活 DSCP 标记规则发送至所述 TWAG ;
    或者,策略实体通过与所述 BNG 的接口将去激活 DSCP 标记规则发送至所述 BNG ,所述 BNG 通过与所述 TWAG 之间的接口将去激活 DSCP 标记规则发送至所述 TWAG 。
  7. 如权利要求 2 至 6 任一项所述的方法,其特征在于, 所述 DSCP 标记规则用于指示固网节点根据所述固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变。
  8. 如权利要求 7 所述的方法,其特征在于, 所述固网节点根据接收到的 DSCP 标记规则,对与目标数据流执行 DSCP 标记具体为:
    所述固网节点根据所述 DSCP 映射表,对所述目标数据流的每个数据包进行 DSCP 值映射,或者将每个数据流的 DSCP 值标记成所述通过 DSCP 值直接指示或者通过 QCI 值间接指示的 DSCP 值,或者保持所述目标数据流的 DSCP 值不变。
  9. 一种 DSCP 的标记处理系统 ,其特征在于,所述 系统 包括固网节点以及策略实体,其中:
    所述策略实体,用于当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与所述数据流类型对应的 DSCP 标记规则,并发送与所述数据流类型对应的 DSCP 标记规则至所述固网节点中;以及
    所述固网节点,用于根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
  10. 如权利要求 9 所述的系统,其特征在于, 所述策略实体为 BPCF 、融合 PCRF 或者包含所述 BPCF 功能的其他策略实体, 所述 融合 PCRF 为同时具有所述 BPCF 与 PCRF 功能的策略实体 ; 所述数据流类型为所述移动终端的分组交换数据流 或本地卸载数据流、 所述 固网设备 的数据流中的一种类型;所述固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG 。
  11. 如权利要求 10 所述的系统,其特征在于, 当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 , 所述策略实体 具体包括:
    访问会话建立 单元,用于对本地卸载数据流 进行策略和计费控制 ,并 与 所述 PCRF 建立 IP-CAN 会话 ;以及
    标记 规则 第一发送单元,用于 从所述 PCRF 获取与所述本地卸载数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述固网节点;
    或者,所述策略实体 具体包括:
    控制会话建立单元,用于 在所述移动终端与移动分组数据网关建立连接后,对分组交换 数据流 进行策略和计费控制 ,并 与 所述 PCRF 建立网关控制会话;以及
    标记 规则 第二发送单元,用于 从 PCRF 获取与所述分组交换数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述固网节点。
  12. 如权利要求 10 所述的系统,其特征在于, 当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 , 所述策略实体 具体包括:
    访问会话建立 单元,用于 与 PCRF 建立 IP-CAN 会话;以及
    规则生成及 发送第一单元,用于 从所述 PCRF 获取与所述本地卸载数据流对应的 PCC 规则,根据所述 PCC 规则生成与所述本地卸载数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述固网节点;
    或者,所述策略实体 具体包括:
    控制会话建立单元,用于 在所述移动终端与移动分组数据网关建立连接后,与 PCRF 建立网关控制会话;以及
    规则生成及 发送第二单元,用于 从所述 PCRF 获取与所述分组交换数据流对应的 QoS 规则,根据所述 QoS 规则生成与所述分组交换数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述固网节点;
    或者,所述策略实体 具体包括:
    规则生成及发送第三单元,用于 在所述 固网设备接入网络后,生成与所述固网设备数据流对应的 DSCP 标记规则,并将所述 DSCP 标记规则发送至所述 BNG 。
  13. 如权利要求 10 所述的系统,其特征在于, 当策略实体为所述融合 PCRF 时 , 所述策略实体 具体包括:
    访问会话建立单元,用于与所述 BNG 建立 IP-CAN 会话;
    规则生成及发送第四单元,用于 当数据流类型对应所述移动终端的 本地卸载数据流时,生成并 发送与所述本地卸载数据流对应的 DSCP 标记规则至所述固网节点;
    规则生成及发送第五单元,用于 当数据流类型对应所述 固网设备 的数据流 时, 生成并发送与所述 固网设备 的数据流对应的 DSCP 标记规则至所述 BNG ;
    或者,所述策略实体 具体包括:
    控制会话建立 单元,用于 在所述移动终端与移动分组数据网关建立连接后,与所述 BNG 建立网管控制会话;
    规则生成及发送第六单元,用于 数据流类型对应所述移动终端的分组交换数据流时 ,生成并 发送与所述分组交换数据流对应的 DSCP 标记规则至所述固网节点;
    或者,所述策略实体 还用于 在所述移动终端依次通过所述 BNG 和所述 TWAG 与移动分组数据网关建立连接后,通过移动分组数据网关和所述 TWAG 之间的接口向所述 TWAG 发送承载的 QCI 信息,以使所述 TWAG 根据承载的 QCI 信息对所述分组交换数据流进行 DSCP 标记。
  14. 如权利要求 9-13 所述的系统,其特征在于, 所述 DSCP 标记规则用于指示固网节点根据所述固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变。
  15. 如权利要求 14 所述的系统,其特征在于, 所述固网节点具体用于:
    根据所述 DSCP 映射表,对所述目标数据流的每个数据包进行 DSCP 值映射,或者将每个数据流的 DSCP 值标记成所述通过 DSCP 值直接指示或者通过 QCI 值间接指示的 DSCP 值,或者保持所述目标数据流的 DSCP 值不变。
  16. 一种策略实体,其特征在于,所述策略实体包括:
    获取单元,用于 当 移动终端或固网设备通过固网成功接入网络后, 获取数据流类型及与所述数据流类型对应的 DSCP 标记规则;以及
    发送单元,用于 发送与所述数据流类型对应的 DSCP 标记规则至固网节点中,以使所述固网节点根据接收到的 DSCP 标记规则,对目标数据流执行 DSCP 标记。
  17. 如权利要求 16 所示的策略实体,其特征在于,所述策略实体为 BPCF 、融合 PCRF 或者包含所述 BPCF 功能的其他策略实体, 所述 融合 PCRF 为同时具有所述 BPCF 与 PCRF 功能的策略实体 ; 所述数据流类型为所述移动终端的分组交换数据流 或本地卸载数据流、 所述 固网设备 的数据流中的一种类型;所述固网节点为宽带网络网关 BNG 和 / 或可信 WLAN 接入网关 TWAG 。
  18. 如权利要求 17 所示的策略实体,其特征在于,当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 ,
    所述获取单元具体用于在与 PCRF 建立 IP-CAN 会话后,从所述 PCRF 获取与本地卸载数据流对应的 DSCP 标记规则;
    或者,所述获取单元具体用于在所述移动终端与移动分组数据网关建立连接,且所述策略实体与 PCRF 建立网关控制会话后,从 PCRF 获取与分组交换数据流对应的 DSCP 标记规则。
  19. 如权利要求 17 所示的策略实体,其特征在于,当策略实体为 BPCF 或者包含所述 BPCF 功能的其他策略实体时 ,
    所述获取单元具体用于在与 PCRF 建立 IP-CAN 会话后,从所述 PCRF 获取与所述本地卸载数据流对应的 PCC 规则,根据所述 PCC 规则生成本地卸载数据流对应的 DSCP 标记规则;
    或者,所述获取单元具体用于在与 PCRF 建立网关控制会话后,从所述 PCRF 获取与分组交换数据流对应的 QoS 规则,根据所述 QoS 规则生成分组交换数据流对应的 DSCP 标记规则;
    或者,所述获取单元具体用于在所述 固网设备接入网络后,直接生成与所述固网设备数据流对应的 DSCP 标记规则。
  20. 如权利要求 18 或 19 所述的策略实体,其特征在于,所述策略实体还包括:
    会话结束单元,用于当检测到在所述移动终端与移动分组数据网关的连接断开时,根据所述 PCRF 发送的网关控制会话结束消息,结束与 所述 PCRF 的网关控制会话;以及
    去激活规则发送单元,用于发送去激活 DSCP 标记规则至所述固网节点,以使所述固网节点对所述移动终端的分组交换数据流进行去激活 DSCP 标记规则的处理。
  21. 如权利要求 20 所述的策略实体,其特征在于,所述去激活规则发送单元还用于当检测到与所述 PCRF 之间的 IP-CAN 会话结束时,发送去激活 DSCP 标记规则至所述固网节点。
  22. 如权利要求 17 所示的策略实体,其特征在于,当策略实体为所述融合 PCRF 时 , 所述获取单元具体用于当获取数据流类型对应所述移动终端的 本地卸载数据流时,生成 与所述本地卸载数据流对应的 DSCP 标记规则;
    当获取的数据流描述信息对应所述 固网设备 的数据流描述信息 时, 生成与所述 固网设备 的数据流对应的 DSCP 标记规则至所述 BNG ;
    或者,在所述移动终端与移动分组数据网关建立连接,且 所述融合 PCRF 与所述 BNG 建立网关控制会话后,获取的数据流对应所述移动终端的分组交换数据流时 ,生成 与所述分组交换数据流对应的 DSCP 标记规则至所述固网节点。
  23. 如权利要求 16 至 22 任一项所述的 策略实体 ,其特征在于, 所述 DSCP 标记规则用于指示固网节点根据所述固网节点上预配置的 DSCP 映射表或者 DSCP 标记规则中实时指示的 DSCP 映射表,对目标数据流进行 DSCP 标记,或者指示固网节点将目标数据流标记为所指示的 DSCP 值或者所指示的 QCI 值所对应的 DSCP ,或者指示固网节点保持目标数据流的 DSCP 值不变。
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