WO2014205783A1 - 一种路由消息传输方法及装置 - Google Patents

一种路由消息传输方法及装置 Download PDF

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Publication number
WO2014205783A1
WO2014205783A1 PCT/CN2013/078384 CN2013078384W WO2014205783A1 WO 2014205783 A1 WO2014205783 A1 WO 2014205783A1 CN 2013078384 W CN2013078384 W CN 2013078384W WO 2014205783 A1 WO2014205783 A1 WO 2014205783A1
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WIPO (PCT)
Prior art keywords
dra
message
routing
unreachable
node group
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PCT/CN2013/078384
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English (en)
French (fr)
Inventor
陈彦辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN201380000621.3A priority Critical patent/CN103650543B/zh
Priority to PCT/CN2013/078384 priority patent/WO2014205783A1/zh
Publication of WO2014205783A1 publication Critical patent/WO2014205783A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/24Connectivity information management, e.g. connectivity discovery or connectivity update
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/34Modification of an existing route
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08Mobility data transfer
    • H04W8/14Mobility data transfer between corresponding nodes

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for transmitting a routing message. Background technique
  • the AAA (Authentication, Authorization and Accounting) client and the AAA server client pass the DRA (Diameter Routing Agent) when receiving the client request.
  • the routing agent performs the interaction. For example, when the AAA client receives the client request, it sends a message to the AAA server through the DRA, and then receives the message returned by the AAA server through the DRA to complete the interaction, or the AAA server passes the DRA to the AAA client.
  • the AAA server receives the message returned by the AAA client through the DRA, and the AAA client can be an MME (Mobility Management Entity), a PCEF (Policy and Charging Enforcement Function).
  • MME Mobility Management Entity
  • PCEF Policy and Charging Enforcement Function
  • ⁇ server can be HSS (Home Subscriber Server, Home Subscriber Server), PCRF (Policy and Charging Rules Function), and any one of CSCF (Call Session Control Function).
  • CSCF Call Session Control Function
  • Billing rule function The network structure of the AAA client, the AAA server, and the DRA is as shown in Figure 1, where multiple DRAs directly connected to the AAA server form an AAA server.
  • a DRA group that is directly connected to the AAA server and a DRA group that is directly connected to the AAA client may also include at least one group of DCA groups that are not directly connected to the AAA server and the AAA client.
  • the previous DRA group in the current DRA group refers to a DRA group adjacent to the current DRA group between the current DRA group and the AAA server.
  • the latter DRA group of the current DRA group refers to one adjacent to the current DRA group between the current DRA group and the AAA client.
  • the DRA group is shown in Figure 1. In the prior art, an interaction between the AAA client and the AAA server is required.
  • the interaction process between the MME and the HSS is:
  • the MME receives a request for attaching a user.
  • An HSS is selected as the target HSS, and a ULR (Update-Location-Request) message is sent to the HSS to obtain the subscription information of the user. If no direct route is set between the MME and the target HSS, Then the MME can send a URL message to the target HSS through the DRA.
  • ULR Update-Location-Request
  • the Diameter protocol is the next-generation AAA protocol standard and is widely used in LTE, IMS (IP Multimedia Subsystem, IP Multimedia Subsystem, IP (Internet Protocol)) and PCC (Policy and Charging Control) networks.
  • IMS IP Multimedia Subsystem
  • IP Internet Protocol
  • PCC Policy and Charging Control
  • Intra-network aggregation or inter-network roaming requires the deployment of a large number of DRAs to forward Diameter signaling, and multi-level STP (Signaling Transfer Point) of SS7 (Signaling System No.7). network.
  • SS7 Synignaling System No.7
  • the Diameter protocol does not design a management function similar to SS7 routing, so the Diameter node cannot manage the state of the indirectly connected node.
  • Diameter protocol stipulates that all nodes should cache the message after sending the URL message, if the forward direction is received (ie, The correct response of the next node) deletes the cached message. If the result code sent by the previous office is received as follows: DIAMETER— UNABLE—TO—DELIVER, the cached message is rerouted.
  • the AAA client when the AAA client interacts with the AAA server, if any DRA to AAA server between the AAA client and the AAA server is unreachable, the other DRAs are still sent to the unreachable DRA.
  • the message may cause the DRA load of the unreachable AAA server to be overloaded. If multiple DRAs between the AAA client and the AAA server, or all DRAs directly connected to the AAA server are unreachable to the AAA server, other DRAs at this time If the message is still sent to the DRA of these unreachable AAA servers, a large number of retransmission messages may be generated on the transmission path, causing the message wind.
  • an embodiment of the present invention provides a method and a device for transmitting a routing message, which are used to solve the problem that some DRA to AAA clients or the AAA server are unreachable in the prior art.
  • the DRA sends routing messages, which may cause network storms and network element overloads caused by the signaling network.
  • an embodiment of the present invention provides a method for transmitting a routing message, including:
  • the first Diameter routing agent DRA receives the first routing message sent by the second DRA, where the first routing message carries the unreachable node group information in the backward direction of the second DRA;
  • the first DRA and the second DRA are located in a same layer, and are connected by a C link, or the second DRA is located on a layer of the first DRA. ;
  • the first DRA and the second DRA are located in a same layer, and are connected by a C link, or the second DRA is located on a layer of the first DRA. ;
  • the embodiment of the present invention provides a first Diameter routing agent DRA device, including:
  • a receiving unit configured to receive a first routing message sent by the second DRA, where the first routing message carries unreachable node group information in a backward direction of the second DRA;
  • An update unit configured to update the unreachable node group information according to a type of the first routing message received by the receiving unit;
  • the second routing message of the group information is used to notify the third DRA that the routing message is not sent through the node of the unreachable node group after the update.
  • the first DRA and the second DRA are located in a same layer, and are connected by a C link, or the second DRA is located on a layer of the first DRA. ;
  • the updating unit is configured to: add the second DRA information to the unreachable node group information if the first routing message is determined to be a routing failure message.
  • the first DRA and the second DRA are located in a same layer, and are connected by a C link, or the second DRA is located on a layer of the first DRA. ;
  • the updating unit is configured to: if the first routing message is determined to be a routing request message, keep the unreachable node group information unchanged.
  • the subsequent routing message is sent through the node of the unreachable node group, and the existing AAA client and the AAA server exist in the prior art.
  • the problem that the DRA of the at least one unreachable AAA server, the AAA client or other DRAs still send messages to the unreachable DRAs may cause network storms and network element overloads caused by the signaling network.
  • FIG. 1 is a schematic diagram of a network structure of an AAA client, an AAA server, and a DRA in the prior art
  • FIG. 2 is a detailed flowchart of a DRA transmission message according to an embodiment of the present invention
  • FIG. 3 is a first schematic diagram of a DRA transmission message according to an embodiment of the present invention.
  • FIG. 4 is a second schematic diagram of DRA reselection in an embodiment of the present invention.
  • FIG. 5 is a first schematic diagram of a DRA apparatus according to an embodiment of the present invention.
  • FIG. 6 is a second schematic diagram of a DRA apparatus according to an embodiment of the present invention. detailed description
  • the DRA of the unreachable AAA server repeatedly receives the message sent to the AAA server, or the other DRA repeats to the unreachable AAA.
  • the method for transmitting a routing message is provided by the embodiment of the present invention.
  • Embodiment 1 the detailed flow of the DRA transmission message is as follows: Embodiment 1:
  • Step 200 The first DRA receives the first routing message sent by the second DRA, where the first routing message carries the unreachable node group information in the backward direction of the second DRA.
  • first DRA and the second DRA may be in the same group and connected by a C link, or the second DRA may be located in a previous group of the first DRA.
  • the second DRA can only be the same DRA as the first DRA, and the DRA connected through the C link, as shown in FIG.
  • the first DRA is the DRA in the DRA group
  • the second DRA is also the DRA in the DRA group.
  • the first DRA is the DRA in the previous DRA group
  • the second DRA is in the DRA group. DRA.
  • Step 210 The first DRA updates the unreachable node group information according to the type of the received first routing message.
  • updating the unreachable node group information according to the type of the first routing message includes: adding the second DRA information to the unreachable node group information if the first routing message is a routing failure message. If the first routing message is a routing request message, the unreachable node group information remains unchanged.
  • the update of the unreachable node group information in the embodiment of the present invention is a generalized update, that is, keeping the unreachable node group information unchanged, and also belonging to an update.
  • Step 220 The first DRA sends a second routing message that includes the updated unreachable node group information to the third DRA, to notify the third DRA that the node that does not go through the updated unreachable node group when sending the routing message.
  • the routing request message including the updated unreachable node group information is sent to the third DRA.
  • the first DRA when the first DRA is a DRA directly connected to the AAA client or the AAA server, the first DRA sends a second routing message including the updated unreachable node group information to the AAA client or the AAA server to notify the AAA client.
  • the node that sends the routing message does not go through the unreachable node group after the update.
  • each node in the unreachable node group is unreachable to the AAA client or the AAA server.
  • routing request messages preferably, a ULR message, or a CLR (Cancel-Location-Request) message, or an AIR (Authentication-Information-Request)
  • ULR User Location
  • CLR Cancel-Location-Request
  • AIR Authentication-Information-Request
  • the ULA Update-Location- Answer
  • CLR CLR
  • CLA Cancel-Location- Answer
  • Cancel Location Registration AIR
  • AIA Authentication-Information- Answer, Authentication Request Response
  • IDR Insert-Subscriber-Data-Request
  • IDA Insert-Subscriber-Data-Answer
  • DSR Delete-Subscriber-Data-Request
  • DSA Delete-Subscriber-Data-Answer
  • PUR Purge-UE-Request, Clear User Device Request
  • PUA Purge-UE-Answer, Clear User Device Response
  • RSR Reset-Request, Reset Request
  • RSA Reset-Request
  • NOR Notify-Request
  • ECR ME-Identity-Check-Request
  • ECA ME-Identity-Check-Answer
  • Mobile Device Identity Check Response Mobile Device Identity Check Response
  • Gx PCEF-PCRF
  • Gz/Rf PGW: (PDN Gateway, PDN (Packet Data Network) Gateway), OFCF ( Offline Charging Function, AF (application function), OCS (online charging system), OCF (Online Charging Function), IP-SM-GW (IP) Shortmessage gateway, IP short message gateway), Gy/Ro (PGW-OCS/CSCF-OCF/AF-OCF),
  • the following takes the message based on the Diameter protocol as an example of the ULA message.
  • the format of the ULA message is as follows:
  • the unreachable node group information is carried by the AVP field added in the first message based on the Diameter protocol. Because the unreachable node group information is carried in the routing message, the subsequent routing message is sent through the node of the unreachable node group.
  • the DRA if at least one unreachable AAA server exists between the AAA client and the AAA server, The DRA, other DRAs still send messages to the unreachable DRAs, which may cause network storms and network element overloads caused by the signaling network.
  • the process of transmitting a message by the DRA is further described in detail.
  • the AAA client is the MME
  • the AAA server is the HSS
  • the message between the two is exchanged.
  • Embodiment 2 There are two DRA groups (as shown in Figure 3):
  • Step 300 After the UE roams to the MME, in the power-on state, the UE initiates an update indication to the MME, so that the MME initiates a location update.
  • the update indication may be any one of an Attach Request attach indication, a Detach Request detach indication, or a TAU Request TA indication.
  • Step 310 The MME selects DRA2-a in the second DRA group, and sends a ULR message to the DRA2-a.
  • the MME may select the wheel selection method or may select the cycle mode.
  • Step 320 DRA2-a forwards the received ULR message to the directly connected DRAl-a in the first DRA group;
  • Step 330 The DRA-a to the directly connected HSS is unreachable, and then sent to the DRAl-b in the same group through the C link;
  • Step 340 The DRAl-b to the HSS is also unreachable, and the DRAl-b returns a ULA message to the DRAl-a, and notifies the DRAl-b unreachable HSS that the DRAl-a is located in the same group and is connected through the C link, where the ULA The message is a route failure message. Therefore, DRAl-a can determine the information of the DRAl-b unreachable HSS according to the received ULA message.
  • Step 350 DRAl-a determines, according to the received ULA message, that DRAl-b cannot send the ULR message to the HSS, (that is, all of its own routes cannot send the ULR message to the HSS), DRAl-a Returning the first routing message, that is, the ULA message, to the DRA2-a, where the ULA message carries the information of the DRAl-b of the unreachable HSS in the backward direction of the DRAl-a; if the DRA belonging to the same group as the DRAl-a is When multiple times, the ULA message carries the information of the DRA group of the unreachable HSS in the backward direction of DRAl-a.
  • DRAl-a adds the DRAl-b identifier to the returned ULA message, which is carried by the new AVP field in the ULA message.
  • the unreachable node group contains only one node information, namely DRAl.
  • the DRA2-a determines the DRAl-b unreachable HSS according to the node information carried in the received ULA message, because the first routing message received by the DRA2-a, that is, the ULA message is a routing failure message, therefore, the DRA2 -a determines the DRAl-a unreachable HSS, and sends the received ULA message to the DRA2-b, specifically adding the information of the DRA1-a to the received unreachable node group information.
  • Step 360 DRA2-a determines that neither DRAl-b nor DRAl-a can send the ULR message to the HSS, that is, if the DRAs in the previous group of DRAs in the DRA2-a are unreachable, the route reselection is performed. Sending the ULR message to the DRA2-b connected by the C link in the same group;
  • the DRA2-a learns that the message is a route failure message according to the received ULA message, and adds the identifier of the DRA1-a to the received ULR message, where the identifier is a new AVP field in the ULR message. Carrying.
  • Step 370 The DRA2-b finds that it has no route to go through the identifiers of the DRAl-a and the DRAl-b carried in the received ULR message, and then returns a ULA message to the DRA2-a.
  • the ULA message carries the DIAMETER_UNABLE_TO_DELIVER information, because the new AVP is not carried because the new routing information is not learned, because the DRA2-b receives the DRA1 carried in the ULR message.
  • the identification of a and DRAl-b can determine that both DRA1 -a and DRAl-b are unreachable to HSS. Therefore, DRA2-b no longer sends a message to DRAl-a or DRAl-b to request DRAl-a or DRAl-b to send a message. Sending to HSS, DRAl-a and DRAl-b will no longer receive messages sent by DRA2-b.
  • the first routing message sent by the DRA2-b to the DRA2-a is a route failure message, and therefore, the DRA2-a adds the information of the DRA2-b to the unreachable node group information.
  • the ULA message carries the DIAMETER_UNABLE_TO_DELIVER information
  • the DRA2-a adds the identifiers of the DRAl-b, DRA2-b, and DRA2-b to the returned ULA message, and the identifiers are passed through the ULA message.
  • the MME determines that DRAl-b, DRAl-a, DRA2-b, and DRA2-a cannot send the ULR message to the HSS according to the received ULR message, and finds that no route is available, and does not retransmit the ULR message. Therefore, network element load and network storms are avoided.
  • Embodiment 3 There are three DRA groups (as shown in Figure 4):
  • Step 4000 After the UE roams to the MME, in the power-on state, the UE initiates a location update indication to the MME, so that the MME sends the ULR.
  • the update indication may be any one of an Attach Request attach indication, a Detach Request detach indication, or a TAU Request TA indication.
  • Step 4100 The MME selects DRA3 -a in the third DRA group, and sends a ULR message to DRA3 -a.
  • the MME may select the wheel selection method or may select the cycle mode.
  • Step 4200 DRA3-a forwards the received ULR message to the directly connected DRA2-a in the second DRA group;
  • Step 4300 DRA2-a forwards the received ULR message to DRAl-a of the directly connected home domain in the first DRA group;
  • Step 4400 The DRA-a to the directly connected HSS is unreachable, and then sent to the DRAl-b in the same group and connected through the C link;
  • Step 4500 The DRAl-b to the HSS is also unreachable, and then returns a ULA message to the DRAl-a.
  • the ULA message received by the DRAl-a is a route failure message, and therefore, determining that the DRAl-b to the HSS is unreachable,
  • the DRAl-b to HSS unreachable is determined by the following information carried in the ULA message: DIAMETER UNABLE TO DELIVER information.
  • Step 4600 DRAl-a determines, according to the received ULA message, that DRAl-b cannot send the ULR message to the HSS, (ie, all of its own routes cannot send the ULR message to the HSS), and the DRAl-a returns the ULA message to the DRA2-a. ;
  • DIAMETER_UNABLE_TO_DELIVER information is carried in the ULA message, and DRAl-a updates the received ULA message, specifically adding the information of DRAl-b to the received unreachable node group.
  • the identifier is carried in the new AVP field in the ULA message, and the DRA2-a determines the DRA1 -b unreachable HSS according to the field carried in the received ULA message, and the routing failure message is obtained according to the received ULA message. Therefore, it is determined that DRAl-a is unreachable to HSS.
  • Step 4700 DRA2-a determines that neither DRAl-b nor DRAl-a can send the ULR message to the HSS, but performs route reselection, selects the C chain, and sends the ULR message to DRA2-b.
  • the DRA2-a adds the identifier of the DRAl-a to the received first routing message, that is, the ULR message, and the identifier is carried by the newly added AVP field in the ULR message, and the DRA2-b is received according to The message determines that neither DRAl-b nor DRAl-a is reachable to the HSS, and then DRA2-b does not send ULR messages to DRAl-b and DRAl-a.
  • Step 4800 The DRA2-b finds that there is no route to go through the identifiers of the DRAl-a and the DRAl-b carried in the received ULR message, and then returns a ULA message to the DRA2-a.
  • the ULA message carries the DIAMETER_UNABLE_TO_DELIVER information, and the message is a routing failure message. Since no new routing information is learned, no new AVP is required.
  • Step 4900 DRA2-a determines that neither DRAl-b, DRAl-a, and DRA2-b can send the ULR message to the HSS. DRA2-a finds that there is no route to go, and then returns a second routing message to the DRA3-a, that is, ULA. Message
  • the ULA message carries the DIAMETER_UNABLE_TO_DELIVER information
  • the DRA2-a also adds the identifiers of DRAl-b, DRAl-a, DRA2-b to the returned ULA message, and the identifiers are all passed the ULA message.
  • the new AVP field is carried in.
  • DRA3-a determines that neither DRAl-b, DRAl-a, DRA2-b, and DRA2-a can send the ULR message to the HSS, perform routing reselection, select the C chain, and send the ULR message to the DRA3-b. ;
  • the second routing message received by the DRA3-a is a route failure message. Therefore, the received second routing message is changed, specifically, the information of the DRA2-a is added to the unreachable node group information, DRA2. The information of -a is carried in the new AVP field in the ULR message.
  • Step 4120 DRA3-b finds that there is no route to go, and then returns a ULA message to DRA3-a, where the ULA message carries DIAMETER_UNABLE_TO_DELIVER information, which is a routing failure message, because no new route is learned. Information, no need to carry new AVP;
  • Step 4130 DRA3-a determines that neither DRAl-b, DRAl-a, DRA2-b, DRA2-a, and DRA3-b can send the ULR message to the HSS. DRA3-a finds that there is no route to go, and then returns the ULA to the MME. Message.
  • the ULA message carries DIAMETER_UNABLE_TO_DELIVER information
  • DRA3-a also adds the identifiers of DRAl-b, DRAl-a, DRA3-b, DRA3-a and DRA3-b to the returned ULA message.
  • the identifiers are carried by the new AVP field in the ULA message.
  • the MME determines that neither DRAl-b, DRA1 -a, DRA3-b, DRA3-a, DRA2-a, and DRA2-b can send the ULR message to the HSS, and finds that no route is available, no longer heavy Send a ULR message.
  • the method for transmitting the ULR message between the MME and the HSS is used as an example to avoid the impact of the repeated transmission of the ULR message by the DRA on the signaling network, thereby preventing the AAA server and the AAA client from interacting with each other. Unreachable AAA server, DRA repeatedly sends the impact of this message on the signaling network.
  • an embodiment of the present invention provides a first DRA apparatus, including:
  • the receiving unit 501 is configured to receive a first routing message sent by the second DRA, where the first routing message carries unreachable node group information in a backward direction of the second DRA;
  • the updating unit 502 is configured to update the unreachable node group information according to the type of the first routing message received by the receiving unit;
  • the sending unit 503 is configured to send, to the third DRA, a second routing message that includes the unsatisfactory node group information after the update unit is updated, to notify the third DRA that the node that does not go through the updated unreachable node group when sending the routing message.
  • first DRA and the second DRA are located in the same group, and are connected by a C link, or the second DRA is located in a previous group of the first DRA;
  • the updating unit 502 is configured to: if the first routing message is a routing failure message, add the second DRA information to the unreachable node group information; if the first routing message is determined to be the routing request message, the unreachable node group information is maintained. constant.
  • the sending unit 503 is configured to send, to the third DRA, a routing request message that includes the updated unreachable node group information.
  • each node in the unreachable node group is unreachable to the AAA client or AAA server.
  • FIG. 6 is a structural diagram of another DRA apparatus according to an embodiment of the present invention.
  • the DRA includes at least one processor 601, a communication bus 602, a memory 603, and at least one communication interface 604.
  • the communication bus 602 is used to implement the connection and communication between the above components, and the communication interface 604 is used to connect and communicate with external devices.
  • the memory 603 is configured to store program code that needs to be executed.
  • the program code may include: a receiving unit 6031, an updating unit 6032, and a sending unit 6033. When the unit is executed by the processor 601, the following functions are implemented:
  • the receiving unit 6031 is configured to receive the first routing message sent by the second DRA, where the first routing message carries the unreachable node group information in the backward direction of the second DRA.
  • the updating unit 6032 is configured to update the unreachable node group information according to the type of the first routing message received by the receiving unit;
  • the sending unit 6033 is configured to send, to the third DRA, a second routing message that includes the unsatisfactory node group information after the update unit is updated, to notify the third DRA to send the routing message when the node of the node group is not updated.
  • the DRA device provided by the embodiment of the present invention carries the unreachable node group in the routing message.
  • the information is such that the DAS of the unreachable AAA server exists between the AAA client and the AAA server in the prior art, and the other DRAs are still unreachable.
  • the DRA sends a message that may cause problems such as network storms caused by the signaling network and overload of the network element.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus functions in one or more blocks of a flow or a flow diagram and/or block diagram of a flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions in one or more blocks of the flowchart or in a flow or block of the flowchart.

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Abstract

本发明涉及移动通信技术领域,尤其涉及一种路由消息传输方法及装置,方法包括:第一Diameter路由代理DRA接收第二DRA发送的第一路由消息,第一路由消息携带第二DRA的后向方向上的不可达节点组信息;根据第一路由消息的类型,更新不可达节点组信息;向第三DRA发送包含更新后的不可达节点组信息的第二路由消息,以通知第三DRA发送路由消息时不经过更新后不可达节点组的节点。

Description

一种路由消息传输方法及装置 技术领域
本发明涉及移动通信技术领域, 尤其涉及一种路由消息传输方法及装置。 背景技术
在 LTE( Long Term Evolution,长期演进)通信系统中, AAA( Authentication, Authorization and Accounting, 认证、 鉴权和计费)客户端与 AAA服务器客户 端在收到客户请求时, 通过 DRA ( Diameter Routing Agent, 路由代理)进行 交互, 例如, AAA客户端在收到客户请求时, 通过 DRA向 AAA服务器发送 消息, 然后, 通过 DRA接收 AAA服务器返回的消息完成交互, 或者, AAA 服务器通过 DRA向 AAA客户端发送消息, 然后, AAA服务器通过 DRA接 收 AAA客户端返回的消息完成交互,其中, AAA客户端可以为 MME( Mobility Management Entity , 移 动 性 管 理 实 体 ) 、 PCEF ( Policy and Charging Enforcement Function , 策略控制与计费增强功能) 与 CSCF ( Call Session Control Function, 呼叫会话控制功能模块)等中的任意一 种, AAA服务器可以为 HSS( Home Subscriber Server,归属用户服务器)、 PCRF ( Policy and Charging Rules Function ,策略与计费规则功能)与 OFCS ( Offline Charging System , 离线计费系统)等中的任意一种, AAA客户端、 AAA服 务器及 DRA的网络结构如图 1所示, 其中, 与 AAA服务器直连的多个 DRA 构成与 AAA服务器直连的 DRA组, 在与 AAA服务器直连的 DRA组和与 AAA客户端直连的 DRA组之间还可以包含至少一组非直连 AAA服务器和 AAA客户端的 DRA组, 在非直连 AAA服务器和 AAA客户端的 DRA组中 选择一个 DRA组作为当前 DRA组时, 当前 DRA组的前一 DRA组指在当前 DRA组和 AAA月良务器之间与当前 DRA组相邻的一 DRA组,当前 DRA组的 后一 DRA组指在当前 DRA组和 AAA客户端之间与当前 DRA组相邻的一 DRA组, 具体如图 1所示。 在现有技术中, AAA客户端与 AAA服务器之间 要进行交互, 例如, AAA客户端为 MME、 AAA服务器为 HSS时, MME和 HSS之间的交互过程为: MME收到一用户的附着请求时, 需要选择一个 HSS 作为目标 HSS, 并向该 HSS发送 ULR ( Update-Location-Request, 位置更新 请求) 消息以获取该用户的签约信息, 如果 MME和该目标 HSS之间没有设 置直连路由 , 则 MME可以通过 DRA向该目标 HSS发送 URL消息。
Diameter协议是下一代的 AAA协议标准, 广泛用于 LTE 、 IMS ( IP Multimedia Subsystem, IP多媒体子系统, IP ( Internet Protocol, 互联网协议) ) 和 PCC ( Policy and Charging Control, 策略与计费控制) 网络中。 网内汇聚或 者网间漫游都要求部署大量的 DRA来转发 Diameter信令, 类似 SS7 ( Signaling System No.7, 七号信令)的 STP ( Signaling Transfer Point, 信令转接点)的多 级组网。但是 Diameter协议并没有设计类似 SS7路由的管理功能,所以 Diameter 节点不能管理非直连节点的状态, 其中, Diameter协议规定所有节点发送 URL 消息后要将消息緩存起来, 如果收到前向局 (即下一个节点) 的正确响应则 删除緩存的消息, 如果收到前向局发送的结果码为如下信息: DIAMETER— UNABLE— TO— DELIVER , 则对緩存的消息进行重路由发送。
现有技术中, 当 AAA客户端和 AAA服务器进行交互时, 若 AAA客户端和 AAA服务器之间的任一 DRA到 AAA服务器路由不可达, 此时其他 DRA^续仍 向该不可达的 DRA发送消息, 则可能会造成该不可达 AAA服务器的 DRA负荷 过载, 若 AAA客户端和 AAA服务器之间的多个 DRA, 或者与 AAA服务器直连 的全部 DRA均不可达 AAA服务器时, 此时其他 DRA仍向这些不可达 AAA服务 器的 DRA发送消息, 则传输路径上可能会产生大量的重传消息, 引发消息风
发明内容
本发明实施例提供一种路由消息传输方法及装置, 用以解决现有技术中 部分 DRA到 AAA客户端或到 AAA服务器路由不可达时, 后续仍向不可达 DRA发送路由消息, 可能对信令网造成的网络风暴、 网元负荷过载等问题。 第一方面, 本发明实施例提供一种路由消息传输方法, 包括:
第一 Diameter路由代理 DRA接收第二 DRA发送的第一路由消息,所述 第一路由消息携带所述第二 DRA的后向方向上的不可达节点组信息;
根据所述第一路由消息的类型, 更新所述不可达节点组信息;
向第三 DRA发送包含所述更新后的不可达节点组信息的第二路由消息, 以通知所述第三 DRA发送路由消息时不经过所述更新后不可达节点组的节 点。
在第一方面的第一种可能的实现方式中, 所述第一 DRA和第二 DRA位 于同一层, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的上 一层;
所述根据所述第一路由消息的类型, 更新所述不可达节点组信息, 包括: 若所述第一路由消息为路由失败消息, 则将所述第二 DRA信息添加进不 可达节点组信息。
在第一方面的第二种可能的实现方式中, 所述第一 DRA和第二 DRA位 于同一层, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的上 一层;
所述根据所述第一路由消息的类型, 更新所述不可达节点组信息, 包括: 若所述第一路由消息为路由请求消息, 则保持所述不可达节点组信息不 变。
第二方面, 本发明实施例提供一种第一 Diameter路由代理 DRA装置, 包括:
接收单元, 用于接收第二 DRA发送的第一路由消息, 所述第一路由消息 携带所述第二 DRA的后向方向上的不可达节点组信息;
更新单元, 用于根据所述接收单元接收到的第一路由消息的类型, 更新 所述不可达节点组信息; 组信息的第二路由消息, 以通知所述第三 DRA发送路由消息时不经过所述更 新后不可达节点组的节点。
在第二方面的第一种可能的实现方式中, 所述第一 DRA和第二 DRA位 于同一层, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的上 一层;
所述更新单元用于, 若判断所述第一路由消息为路由失败消息, 则将所 述第二 DRA信息添加进不可达节点组信息。
在第二方面的第二种可能的实现方式中, 所述第一 DRA和第二 DRA位 于同一层, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的上 一层;
所述更新单元用于, 若判断所述第一路由消息为路由请求消息, 则保持 所述不可达节点组信息不变。
本发明实施例中, 由于在路由消息中携带了不可达节点组信息, 使得后 续发送路由消息时不经过不可达节点组的节点,解决了现有技术中若 AAA客 户端和 AAA服务器之间存在至少一个不可达 AAA服务器的 DRA, AAA客 户端或者其他 DRA仍向该些不可达的 DRA发送消息可能对信令网造成的网 络风暴、 网元负荷过载等问题。 附图说明
图 1为现有技术中 AAA客户端、 AAA服务器及 DRA的网络结构示意图; 图 2为本发明实施例中 DRA传输消息的详细流程图;
图 3为本发明实施例中 DRA传输消息的第一示意图;
图 4为本发明实施例中 DRA重选的第二示意图。
图 5为本发明实施例中 DRA装置第一示意图;
图 6为本发明实施例中 DRA装置第二示意图。 具体实施方式 为了解决现有技术中 AAA客户端和 AAA服务器进行交互时, 若 DRA 与 AAA服务器之间发生传输故障, 不可达 AAA服务器的 DRA重复接收发 往 AAA服务器的消息, 或者其他 DRA重复向不可达 AAA服务器的 DRA发 送消息可能会对信令网造成的影响, 本发明实施例提供一种路由消息传输方 法。
下面结合附图对本发明优选的实施方式进行详细说明。
参阅图 2所示, 本发明实施例中, DRA传输消息的详细流程如下: 实施例一:
步骤 200 , 第一 DRA接收第二 DRA发送的第一路由消息, 第一路由消 息携带第二 DRA的后向方向上的不可达节点组信息;
这里, 第一 DRA和第二 DRA可以位于同一组, 且通过 C链路连接, 或 者第二 DRA位于第一 DRA的前一组。
其中, 当第一 DRA为与 AAA服务器或者为与 AAA客户端直连的 DRA 时, 第二 DRA只能为与第一 DRA位于同一层, 且通过 C链路连接的 DRA, 如图 1 中, 当第一 DRA为直连 DRA组中的 DRA时, 第二 DRA也为直连 DRA组中的 DRA; 当第一 DRA为前一 DRA组中的 DRA时, 第二 DRA为 直连 DRA组中的 DRA。
步骤 210, 第一 DRA根据接收到的第一路由消息的类型, 更新不可达节 点组信息;
这里, 根据第一路由消息的类型, 更新不可达节点组信息, 包括: 若第 一路由消息为路由失败消息, 则将第二 DRA信息添加进不可达节点组信息。 若第一路由消息为路由请求消息, 则保持不可达节点组信息不变。 本发明实 施例中不可达节点组信息的更新, 是一种广义的更新, 即保持不可达节点组 信息不变, 也属于一种更新。
步骤 220, 第一 DRA向第三 DRA发送包含更新后的不可达节点组信息 的第二路由消息, 以通知第三 DRA发送路由消息时不经过更新后不可达节点 组的节点。 这里, 若第一路由消息未经过第三 DRA, 向第三 DRA发送包含更新后 的不可达节点组信息的路由请求消息。
这里, 当第一 DRA为与 AAA客户端或者 AAA服务器直连的 DRA时, 第一 DRA向 AAA客户端或者 AAA服务器发送包含更新后的不可达节点组 信息的第二路由消息,以通知 AAA客户端发送路由消息时不经过更新后不可 达节点组的节点。
本发明实施例中的不可达节点组中的各节点到 AAA客户端或 AAA服务 器路由不可达。
本发明实施例中, 路由请求消息有多种, 较佳的, 可以为 ULR消息, 或 者为 CLR ( Cancel-Location-Request, 取消位置登记请求) 消息、 或者为 AIR ( Authentication-Information-Request , 鉴权请求 )消息 , 还可以为下面提及到 的多种消息:
例如, S6a/S6d接口的 ULA ( Update-Location- Answer )消息、 CLR消息、 CLA ( Cancel-Location- Answer, 取消位置登记响应) 消息、 AIR 消息、 AIA ( Authentication-Information- Answer , 鉴权请求响应 ) 消 息 、 IDR ( Insert-Subscriber-Data-Request , 插入用 户 数据请求 ) 消息、 IDA ( Insert-Subscriber-Data-Answer , 插 入 用 户 数据 ) 消 息 、 DSR ( Delete-Subscriber-Data-Request , 删除用户数据请求 ) 消息、 DSA ( Delete-Subscriber-Data-Answer , 删除用户数据响应 ) 消息、 PUR ( Purge-UE-Request, 清除用户设备请求) 消息、 PUA ( Purge-UE-Answer , 清除用户设备响应) 消息、 RSR ( Reset-Request , 重置请求) 消息、 RSA ( Reset- Answer, 重置响应) 消息、 NOR ( Notify-Request, 通知请求) 消息、 NO A ( Notify- Answer, 通知响应) 消息等等。
又例如, S 13/S 13 '接口的 ECR ( ME-Identity-Check-Request , 移动设备身 份检查请求) 、 ECA ( ME-Identity-Check-Answer, 移动设备身份检查响应) 消息, 等等。 还例如, Gx(PCEF-PCRF)、 Gz/Rf(PGW-OFCF/CSCF-OFCF/AF-OFCF , 其中, PGW: ( PDN Gateway, PDN ( Packet Data Network, 分组数据网) 网 关) , OFCF ( Offline Charging Function, 离线计费功能) , AF ( application function, 应用功能实体) , OCS ( online charging system, 在线计费系统 ) , OCF ( Online Charging Function,在线计费功能), IP-SM-GW ( IP shortmessage gateway , IP短消息网关)、 Gy/Ro(PGW-OCS/CSCF-OCF/AF-OCF)、
Cx/Dx(CSCF-HSS)、 Sh/Dh(AF-HSS/IP-SM-GW-HSS)中的系列消息, 在此不再 进行 详述。
下面以基于 Diameter协议的消息为 ULA消息为例进行说明。
在实际应用中, ULA消息的格式如下:
< Update-Location- Answer> ::= < Diameter Header: 316, PXY, 16777251 > < Session-Id >
[ Vendor- Specific- Application-Id ]
[ Result-Code ]
[ Experimental-Result ]
[ Error-Diagnostic ]
{ Auth-Session-State }
{ Origin-Host }
{ Origin-Realm }
* [ Supported-Features ]
[ ULA-Flags ]
[ Subscription-Data ]
*[ AVP】
*[ Failed- AVP ]
* [ Proxy-Info ]
[ Route-Record ]
本发明实施例中, 不可达节点组信息通过基于 Diameter协议的第一消息 中新增的 AVP字段来进行携带。 由于在路由消息中携带了不可达节点组信息, 使得后续发送路由消息时 不经过不可达节点组的节点, 解决了现有技术中若 AAA客户端和 AAA服务 器之间存在至少一个不可达 AAA服务器的 DRA,其他 DRA仍向该些不可达 的 DRA发送消息可能对信令网造成的网络风暴、 网元负荷过载等问题。 为了更好地理解本发明实施例, 以下给出具体应用场景, 针对 DRA传输 消息的过程, 作出进一步详细描述, 其中, AAA客户端为 MME, AAA服务 器为 HSS, 两者之间的交互的消息为 ULR与 ULA:
实施例二: 共有两个 DRA组(具体如图 3所示):
步骤 300: UE漫游到 MME后 , 在开机状态下, 向 MME发起更新指示, 令 MME发起位置更新;
在步骤 300中,更新指示可以为 Attach Request附着指示、 Detach Request 去附着指示, 或者 TAU Request TA指示中的任意一种。
步骤 310: MME选择第二 DRA组中 DRA2-a, 并向 DRA2-a发送 ULR 消息;
在该步骤中 , MME从第二 DRA组中选择 DRA时,可以釆用轮选方式选 择, 也可以釆用周期的方式进行选择。
步骤 320: DRA2-a将接收到的 ULR消息转发至第一 DRA组中直连的 DRAl-a;
步骤 330: DRAl-a到直连的 HSS不可达,于是通过 C链路发给同一组中 的 DRAl-b;
步骤 340: DRAl-b到 HSS也不可达, 于是 DRAl-b向 DRAl-a返回 ULA 消息, 通知 DRAl-a位于同一组的、 通过 C链路连接的 DRAl-b不可达 HSS, 其中, 该 ULA消息为路由失败消息, 因此, DRAl-a可以根据接收到的 ULA 消息确定 DRAl-b不可达 HSS的信息;
步骤 350: DRAl-a根据接收到的 ULA消息确定 DRAl-b不能将 ULR消 息发送至 HSS, (即自己所有路由的都不能将 ULR消息发送至 HSS ) , DRAl-a 向 DRA2-a返回第一路由消息 ,即 ULA消息,其中,该 ULA消息携带 DRAl-a 的后向方向上的不可达 HSS的 DRAl-b的信息; 若与 DRAl-a属于同一组的 DRA为多个时, ULA消息携带 DRAl-a的后向方向上的不可达 HSS的 DRA 组的信息。
在该步骤中 , DRAl-a将 DRAl-b标识添加到返回的 ULA消息 , 该标识 是通过 ULA消息中的新增 AVP字段携带的, 这里, 不可达节点组里只包含 一个节点信息, 即 DRAl-b, 因此, DRA2-a根据接收到的 ULA消息中携带的 节点信息确定 DRAl-b不可达 HSS, 由于 DRA2-a接收到的第一路由消息, 即 ULA消息为路由失败消息, 因此, DRA2-a确定 DRAl-a不可达 HSS, 并 将接收到的 ULA消息进行更新发送至 DRA2-b , 具体为将 DRA1 -a的信息添 加到接收到的不可达节点组信息中。
步骤 360: DRA2-a确定 DRAl-b与 DRAl-a均不能将 ULR消息发送至 HSS, 也就是说确定了位于 DRA2-a的前一组 DRA中的 DRA均不可达, 则 进行路由重选,将 ULR消息发送至位于同一组的通过 C链路连接的 DRA2-b;
在该步骤中, DRA2-a根据接收到的 ULA消息获知该消息为路由失败消 息 , 则将 DRA1 -a的标识添加到接收到的 ULR消息中 , 该标识是通过 ULR 消息中的新增 AVP字段携带的。
步骤 370: DRA2-b 通过接收到的 ULR消息中携带的 DRAl-a和 DRAl-b 的标识来发现自己已无路由可走, 于是向 DRA2-a返回 ULA消息;
在该步骤中, 该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信 息,由于因为没有学习到新的路由信息,不需携带新增 AVP,由于 DRA2-b 通 过接收到的 ULR消息中携带的 DRA1 -a和 DRAl-b的标识就可以确定 DRA1 -a 和 DRAl-b均不可达 HSS, 因此, DRA2-b不再向 DRAl-a或 DRAl-b发送消 息以请求 DRAl-a或 DRAl-b将消息发送至 HSS, DRAl-a和 DRAl-b也不会 再接收到 DRA2-b发送的消息。 并且, DRA2-b在向 DRA2-a发送的第一路由 消息为路由失败消息, 因此, DRA2-a将 DRA2-b的信息添加进不可达节点组 信息中。 步骤 380: DRA2-a确定 DRAl -b、 DRAl -a和 DRA2-b均不能将 ULR消 息发送至 HSS, DRA2-a发现自己已无路由可走, 于是向 MME返回 ULA消 息。该步骤中,该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信息, DRA2-a将 DRAl-b、 DRA2-b、 DRA2-b的标识添加到返回的 ULA消息中, 该些标识是通过 ULA消息中的新增 AVP字段来携带的。
在该实施例中 , MME根据接收到的 ULR消息确定 DRAl-b、 DRAl -a, DRA2-b及 DRA2-a均不能将 ULR消息发送至 HSS, 发现已经无路由可用, 不再重发 ULR消息, 因此, 避免了网元负荷负载以及网络风暴。
实施例三: 共有三个 DRA组(具体如图 4所示):
步骤 4000: UE漫游到 MME后 , 在开机状态下, 向 MME发起位置更新 指示, 令 MME发送 ULR;
在步骤 4000中,更新指示可以为 Attach Request附着指示、 Detach Request 去附着指示, 或者 TAU Request TA指示中的任意一种。
步骤 4100: MME选择第三 DRA组中 DRA3 -a, 并向 DRA3 -a发送 ULR 消息;
在该步骤中 , MME从第三 DRA组中选择 DRA时,可以釆用轮选方式选 择, 也可以釆用周期的方式进行选择。
步骤 4200: DRA3-a将接收到的 ULR消息转发至第二 DRA组中直连的 DRA2-a;
步骤 4300: DRA2-a将接收到的 ULR消息转发至第一 DRA组中直连的 归属域的 DRAl-a;
步骤 4400: DRAl-a到直连的 HSS不可达, 于是发给处于同一组的、 通 过 C链路连接的 DRAl-b;
步骤 4500: DRAl-b到 HSS也不可达, 于是向 DRAl-a返回 ULA消息; 该步骤中, DRAl-a接收到的 ULA消息为路由失败消息, 因此, 确定 DRAl -b到 HSS不可达,具体为通过 ULA消息中携带的以下信息确定 DRAl -b 到 HSS不可达: DIAMETER UNABLE TO DELIVER信息。 步骤 4600: DRAl-a根据接收到的 ULA消息确定 DRAl-b不能将 ULR 消息发送至 HSS, (即自己所有路由的都不能将 ULR消息发送至 HSS ) , DRAl-a向 DRA2-a返回 ULA消息;
在该步骤中, DIAMETER— UNABLE— TO— DELIVER信息携带在该 ULA 消息中, 且 DRAl-a将接收到的 ULA消息进行更新, 具体为将 DRAl-b的信 息添加到接收到的不可达节点组信息中, 该标识是通过 ULA消息中的新增 AVP字段携带的, DRA2-a根据接收到的 ULA消息中携带的字段确定 DRA1 -b 不可达 HSS, 根据接收到的 ULA消息为路由失败消息, 因此, 确定 DRAl-a 不可达 HSS。
步骤 4700: DRA2-a确定 DRAl-b与 DRAl-a均不能将 ULR消息发送至 HSS, 则进行路由重选, 选择 C链, 将 ULR消息发送至 DRA2-b;
在该步骤中, DRA2-a将 DRAl-a的标识添加到接收到的第一路由消息, 即 ULR消息中,上述标识是通过 ULR消息中的新增 AVP字段携带的, DRA2-b 根据接收到的消息确定出 DRAl-b与 DRAl-a均不可达 HSS,则 DRA2-b不向 DRAl-b与 DRAl-a发送 ULR消息。
步骤 4800: DRA2-b通过接收到的 ULR消息中携带的 DRAl-a和 DRAl-b 的标识来发现自己已无路由可走, 于是向 DRA2-a返回 ULA消息;
其中, 该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信息, 该 消息为路由失败消息, 由于因为没有学习到新的路由信息, 不需携带新增 AVP„
步骤 4900: DRA2-a确定 DRAl-b、 DRAl-a和 DRA2-b均不能将 ULR消 息发送至 HSS, DRA2-a发现自己无路由可走, 于是向 DRA3-a返回第二路由 消息, 即 ULA消息;
该步骤中,该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信息, DRA2-a还将 DRAl-b、 DRAl-a, DRA2-b的标识添加到返回的 ULA消息, 该些标识均是通过 ULA消息中的新增 AVP字段携带的。 步骤 4110: DRA3-a确定 DRAl-b、 DRAl-a、 DRA2-b、 DRA2-a均不能 将 ULR消息发送至 HSS, 则进行路由重选, 选择 C链, 将该 ULR消息发送 至 DRA3-b;
该步骤中, DRA3-a接收到的第二路由消息为路由失败消息, 因此, 将接 收到的第二路由消息进行更改,具体为将 DRA2-a的信息添加到不可达节点组 信息中, DRA2-a的信息是通过 ULR消息中的新增 AVP字段携带的。
步骤 4120: DRA3-b发现自己无路由可走, 于是向 DRA3-a返回 ULA消 息, 其中, 该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信息, 为 路由失败消息, 由于因为没有学习到新的路由信息, 不需携带新增的 AVP;
步骤 4130: DRA3-a确定 DRAl-b、 DRAl-a、 DRA2-b、 DRA2-a和 DRA3-b 均不能将 ULR消息发送至 HSS, DRA3-a发现自己无路由可走, 于是向 MME 返回 ULA消息。
该步骤中,该 ULA消息携带 DIAMETER— UNABLE— TO— DELIVER信息, DRA3-a还将 DRAl-b、 DRAl-a、 DRA3-b、 DRA3-a和 DRA3-b的标识添加到 返回的 ULA消息, 该些标识是通过 ULA消息中的新增 AVP字段携带的。
在该实施例中: MME确定到 DRAl-b、 DRA1 -a、 DRA3-b、 DRA3-a、 DRA2-a 和 DRA2-b均不能将 ULR消息发送至 HSS, 发现已经无路由可用, 不再重发 ULR消息。
实施例二与实施例三中, 以 MME和 HSS之间发送 ULR消息为例 , 避免 了 DRA重复发送 ULR消息对信令网造成的影响, 进而避免 AAA服务器和 AAA客户端进行交互时, 若 DRA不可达 AAA服务器, DRA重复发送该消 息对信令网造成的影响。
如图 5所示, 本发明实施例提供一种第一 DRA装置, 包括:
接收单元 501 , 用于接收第二 DRA发送的第一路由消息, 第一路由消息 携带第二 DRA的后向方向上的不可达节点组信息;
更新单元 502, 用于根据接收单元接收到的第一路由消息的类型, 更新不 可达节点组信息; 发送单元 503 ,用于向第三 DRA发送包含更新单元更新后的不可达节点组 信息的第二路由消息, 以通知第三 DRA发送路由消息时不经过更新后不可达 节点组的节点。
这里, 第一 DRA和第二 DRA位于同一组, 且通过 C链路连接, 或者第 二 DRA位于第一 DRA的前一组;
更新单元 502,用于若判断第一路由消息为路由失败消息,则将第二 DRA 信息添加进不可达节点组信息; 若若判断第一路由消息为路由请求消息, 则 保持不可达节点组信息不变。
若第一路由消息未经过第三 DRA, 则发送单元 503用于向第三 DRA发 送包含更新后的不可达节点组信息的路由请求消息。
这里, 不可达节点组中的各节点到 AAA客户端或 AAA服务器路由不可 达。
如图 6所示, 为本发明实施例提供的另一种 DRA装置结构图, DRA包括至 少一个处理器 601 , 通信总线 602, 存储器 603以及至少一个通信接口 604。
其中, 通信总线 602用于实现上述组件之间的连接并通信, 通信接口 604 用于与外部设备连接并通信。
其中, 存储器 603用于存储需要执行的程序代码, 这些程序代码具体可以 包括: 接收单元 6031、 更新单元 6032、 发送单元 6033 , 当上述单元被处理器 601执行时, 实现如下功能:
接收单元 6031 ,用于接收第二 DRA发送的第一路由消息,第一路由消息 携带第二 DRA的后向方向上的不可达节点组信息;
更新单元 6032, 用于根据接收单元接收到的第一路由消息的类型, 更新 不可达节点组信息;
发送单元 6033 ,用于向第三 DRA发送包含更新单元更新后的不可达节点 组信息的第二路由消息, 以通知第三 DRA发送路由消息时不经过更新后不可 达节点组的节点。
本发明实施例提供的 DRA装置,通过在路由消息中携带了不可达节点组 信息, 使得后续发送路由消息时不经过不可达节点组的节点, 解决了现有技 术中若 AAA客户端和 AAA服务器之间存在至少一个不可达 AAA服务器的 DRA, 其他 DRA仍向该些不可达的 DRA发送消息可能对信令网造成的网络 风暴、 网元负荷过载等问题。
本发明是参照根据本发明实施例的方法、 设备(系统) 、 和计算机程序 产品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程 图和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流 程和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算 机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使 得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现 在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了 基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 脱离本发明实施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变 型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些 改动和变型在内。

Claims

权 利 要 求
1、 一种路由消息传输方法, 其特征在于, 包括:
第一 Diameter路由代理 DRA接收第二 DRA发送的第一路由消息,所述 第一路由消息携带所述第二 DRA的后向方向上的不可达节点组信息;
根据所述第一路由消息的类型, 更新所述不可达节点组信息;
向第三 DRA发送包含所述更新后的不可达节点组信息的第二路由消息, 以通知所述第三 DRA发送路由消息时不经过所述更新后不可达节点组的节 点。
2、 如权利要求 1所述的方法, 其特征在于, 所述第一 DRA和第二 DRA 位于同一组, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的 前一组;
所述根据所述第一路由消息的类型, 更新所述不可达节点组信息, 包括: 若所述第一路由消息为路由失败消息, 则将所述第二 DRA信息添加进不 可达节点组信息。
3、 如权利要求 1所述的方法, 其特征在于, 所述第一 DRA和第二 DRA 位于同一组, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的 前一组;
所述根据所述第一路由消息的类型, 更新所述不可达节点组信息, 包括: 若所述第一路由消息为路由请求消息, 则保持所述不可达节点组信息不 变。
4、 如权利要求 1至 3任一项所述的方法, 其特征在于, 若所述第一路由 消息未经过所述第三 DRA, 则向第三 DRA发送包含所述更新后的不可达节 点组信息的第二路由消息为: 向第三 DRA发送包含所述更新后的不可达节点 组信息的路由请求消息。
5、 如权利要求 1 所述的方法, 其特征在于, 所述不可达节点组中的各 节点到认证、 鉴权或计费 AAA客户端或 AAA服务器路由不可达。
6、 如权利要求 1 所述的方法, 其特征在于, 所述第一路由消息携带所 述第二 DRA的后向方向上的不可达节点组信息, 包括:
通过第一路由消息中新增的属性值对 AVP携带所述不可达节点组信息; 所述向第三 DRA发送包含所述更新后的不可达节点组信息的第二路由消 息, 包括:
通过第二路由消息中新增的属性值对 AVP携带所述更新后的不可达节点 组信息。
7、 一种第一 Diameter路由代理 DRA装置, 其特征在于, 包括: 接收单元, 用于接收第二 DRA发送的第一路由消息, 所述第一路由消息 携带所述第二 DRA的后向方向上的不可达节点组信息;
更新单元, 用于根据所述接收单元接收到的第一路由消息的类型, 更新 所述不可达节点组信息; 组信息的第二路由消息, 以通知所述第三 DRA发送路由消息时不经过所述更 新后不可达节点组的节点。
8、 如权利要求 7所述的装置, 其特征在于, 所述第一 DRA和第二 DRA 位于同一组, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的 前一组;
所述更新单元用于, 若判断所述第一路由消息为路由失败消息, 则将所 述第二 DRA信息添加进不可达节点组信息。
9、 如权利要求 7所述的装置, 其特征在于, 所述第一 DRA和第二 DRA 位于同一组, 且通过 C链路连接, 或者所述第二 DRA位于所述第一 DRA的 前一组;
所述更新单元用于, 若判断所述第一路由消息为路由请求消息, 则保持 所述不可达节点组信息不变。
10、 如权利要求 7至 9任一项所述的装置, 其特征在于, 若所述第一路 由消息未经过所述第三 DRA, 则所述发送单元用于向第三 DRA发送包含所 述更新后的不可达节点组信息的路由请求消息。
11、 如权利要求 7 所述的装置, 其特征在于, 所述不可达节点组中的各 节点到认证、 鉴权或计费 AAA客户端或 AAA服务器路由不可达。
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