WO2011041970A1 - Procédé et système de mise en œuvre prenant en charge la capacité du pousser active des messages de données - Google Patents

Procédé et système de mise en œuvre prenant en charge la capacité du pousser active des messages de données Download PDF

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Publication number
WO2011041970A1
WO2011041970A1 PCT/CN2010/076798 CN2010076798W WO2011041970A1 WO 2011041970 A1 WO2011041970 A1 WO 2011041970A1 CN 2010076798 W CN2010076798 W CN 2010076798W WO 2011041970 A1 WO2011041970 A1 WO 2011041970A1
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Prior art keywords
host node
data packet
node
forwarding plane
online
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PCT/CN2010/076798
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English (en)
Chinese (zh)
Inventor
沈岷
符涛
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中兴通讯股份有限公司
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Publication of WO2011041970A1 publication Critical patent/WO2011041970A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/58—Message adaptation for wireless communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/55—Push-based network services

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and system for implementing an active push capability for supporting data packets.
  • a large number of service servers are deployed on the existing Internet to provide rich and colorful services for the majority of Internet users.
  • a web server that provides news
  • a game server that provides connected games
  • a search server that provides massive search services, and so on.
  • These services are generally provided by the user to obtain the service actively, that is: the user uses various terminals (PC, personal digital assistant (PDA), smart phone, etc., hereinafter referred to as user terminals) connected to the Internet to actively
  • a specific service server on the Internet establishes a communication connection, sends a specific service request to the service server, and then obtains a service response from the service server, and the service response includes various types of information required by the user.
  • the weather forecast service the user wants the service server to actively push the user to the user after obtaining the latest weather forecast information, without waiting for the user to actively access the service server for acquisition, and waiting for the user's active access may affect the timeliness of the weather forecast information. .
  • the existing Internet does not support the function of pushing the data packet (including the information required by the user) to the user by the service server (hereinafter referred to as the PUSH function, and the data packet actively pushed by the server is simply referred to as the PUSH data packet).
  • the communication on the Internet uses the IP address to identify the transceiver end of the data message.
  • the IP address of the service server can be obtained through the DNS function, but the IP address obtained when the user terminal connects to the Internet is If the user terminal does not actively connect to the service provider, the service provider cannot obtain the IP address of the user terminal of the specific user, and cannot actively send the PUSH data packet to the user terminal. .
  • a compromise solution in the existing Internet technology is: After the user terminal connects to the Internet, it sends a login request to a specific service server, and the service server records the current use of the user terminal. IP address; Once the service server has the information that needs to be actively pushed to the user, the PUSH data message is sent using the recorded user terminal IP address.
  • the disadvantage of this solution is: If the user has many services that need to actively push data packets (provided by different service servers), then the user terminal needs to send login messages to different service servers after connecting to the Internet (which also Involved in authentication and other processes); Once the user accidentally drops the network and reconnects, the IP address changes, you need to re-login; If the service server is abnormal during the user's network connection, and the user terminal IP address information is lost, PUSH cannot be performed. The sending of data messages.
  • the present invention provides an implementation method and system for supporting the active push capability of data packets, and enhances the support for the active push capability of data packets.
  • the present invention provides an implementation method for supporting an active push capability of a data packet, and the method is applied to a system based on an identity identification and a location separation framework, including:
  • the first host node obtains online or offline status information of the second host node from the mapping forwarding plane, and pushes the data packet to the second host node according to the online or offline status information.
  • the step of the first host node pushing the data packet to the second host node according to the online or offline status information may include: when the first host node needs to push the data packet to the second host node, determining the status of the second host node, if If the second host node is in the online state, the first host node saves the data packet, and after the second host node is online, the second host node is in the offline state.
  • the host node pushes data packets.
  • the first host node may obtain online or offline status information of the second host node by: sending, by the first host node, a user status subscription message to the first access service node where the first host node is located, where the message includes the identity of the second host node
  • the access server node forwards the user status subscription message to the mapping forwarding plane; and the mapping forwarding plane sends a status change notification message to the first host node when the online status of the second host node changes.
  • the first host node can push the data packet to the second host node by: the first host node needs to be pushed to the second host node.
  • the data packet is sent to the first access service node where the first host node is located, and the data packet includes the identity of the second host node; if the first access service node receives the data packet, if the local query is performed If the location identifier corresponding to the identity of the second host node is added, the location identifier is added to the data packet, and the data packet is sent to the generalized forwarding plane; if the identity of the second host node is not locally queried The location identifier is encapsulated and sent to the mapping forwarding plane.
  • the mapping forwarding plane After receiving the data packet, the mapping forwarding plane queries the location identifier corresponding to the identity identifier of the second host node, and adds the location identifier to the data packet. And forwarding the data packet to the generalized forwarding plane; and, the general forwarding plane forwards the data packet to the second access service node where the second host node is located, and the second access service node sends the data packet to the second host node.
  • the first host node may be a service server or a user terminal
  • the second host node may be a service server or a user terminal.
  • the present invention further provides an implementation system for supporting an active push capability of a data packet, the system being a system based on an identity identification and a location separation framework, where the system includes a first host node, a second host node, and a mapping forwarding plane, where :
  • the first host node is configured to obtain online or offline status information of the second host node from the mapping forwarding plane, and push the data message to the second host node according to the online or offline status information.
  • the first host node may be configured to: push the data message to the second host node according to the online or offline status information by: when the data message needs to be pushed to the second host node, determine the status of the second host node, if the second If the host node is in the online state, the data message is sent to the second host node; if the second host node is in the offline state, the data message is saved, and after the second host node is notified, the data message is sent to the second host node. Text.
  • the system may further include a first access service node, where the first host node may be further configured to send a user status subscription message to the first access service node where the message is located, where the message includes the identity of the second host node;
  • An access service node may be configured to forward the user status subscription message to the mapping forwarding plane;
  • the mapping forwarding plane may be configured to send a status change notification when the online status of the second host node changes after receiving the user status subscription message The message is sent to the first host node, so that the first host node can obtain online or offline status information of the second host node.
  • the above system may further include a first access service node, a generalized forwarding plane, and a second access service section
  • the first host node may be configured to: when the data message is pushed to the second host node, send the data packet to be sent to the second host node to the first access service node where the first host node is located.
  • the data packet includes the identity of the second host node.
  • the first access service node may be configured to: after receiving the data packet, if the location identifier corresponding to the identity of the second host node is locally queried, The location identifier is added to the data packet, and the data packet is sent to the generalized forwarding plane.
  • the mapping forwarding plane may be configured to: after receiving the data packet, query the location identifier corresponding to the identity of the second host node, add the location identifier to the data packet, and forward the data packet to the generalized forwarding plane.
  • the generalized forwarding plane may be configured to forward the data message to the second access service node where the second host node is located; The service node is configured to send the data message to the second host node.
  • the first host node may be a service server or a user terminal
  • the second host node may be a service server or a user terminal.
  • the present invention has the following beneficial effects:
  • the present invention provides an implementation method and system for supporting the active push of data packets, and supports the active push of data packets when the user terminal is offline, and satisfies the characteristics of the user terminal as a mobile node, thereby saving network transmission capability. , reduce the retry of the service server, and enable the user terminal to receive the required data message in time.
  • FIG. 1 is a schematic diagram of a network topology based on an existing identity identification and location separation architecture
  • FIG. 2 is a schematic diagram of a related interface and a data push function based on an identity identification and a location separation architecture according to the present invention
  • FIG. 3 is a schematic diagram of an embodiment of a network improvement architecture used in the present invention.
  • FIG. 4 is a schematic diagram of another embodiment of a network improvement architecture used in the present invention.
  • FIG. 5 is a schematic diagram of an embodiment of a third network improvement architecture used in the present invention.
  • FIG. 6 is a schematic diagram of an embodiment of a fourth network improvement architecture for use in the present invention. Preferred embodiment of the invention
  • IP address in the TCP/IP (Transmission Control Protocol/Internet Protocol) protocol widely used by the Internet has a dual function, and serves as the location of the network terminal's communication terminal host network interface in the network topology.
  • the identity which is also the identity of the transport layer host network interface.
  • the TCP/IP protocol did not consider the movement of the communication terminal at the beginning of the design.
  • the IP address may change, causing the identity to change.
  • the semantic overload defects of such IP addresses are becoming increasingly apparent. For example, as mentioned above, the IP address of the user terminal of a specific user is variable, and the service server can only implement the PUSH function by grasping the current IP address of the user terminal at any time.
  • the invention provides an idea of identity identification and location separation, and separates the original dual functions of the IP address, and uses different identifiers for the location identifier and the identity identifier.
  • the location identifier still uses the IP address, and the identity identifier is additionally defined.
  • Host ID For the same user terminal, the location identifier may change with the access point location, access time and other factors, but its identity may remain unchanged.
  • the service layer only uses the identity of the communication terminal to establish end-to-end communication, and does not care about the location. The change in identity. In this way, the service server can push the data message to the user terminal as long as it knows the identity of the user terminal of the specific user. How the data message is sent to the correct location of the user terminal is implemented by a specific solution for identity identification and location separation.
  • the invention provides a solution for identity identification and location separation for actively pushing data messages.
  • the core idea of the solution is: Divide the network into the access layer and the core layer, and assign a unique host identity (AID: Access Identifier) to each user (including the service server and user terminal) in the network.
  • AID Access Identifier
  • the identity is unique and remains the same during the move; there are two types of identity in the network: the host identity (AID) and the route identifier (RID: Routing Identifier), where the host identity can only be used at the access layer.
  • the location route identifier can only be used at the core layer.
  • the topology diagram of the network architecture proposed by the solution is shown in FIG. 1.
  • the network is divided into an access network and a backbone network, and the access network is responsible for providing and maintaining host nodes (including user terminals and service services).
  • host nodes including user terminals and service services
  • it can be divided into fixed node, nomadic node, mobile node, service server is generally a fixed node) to the access service node (ASN) between the two layers of links;
  • the backbone network is divided into two logically independent Functional plane:
  • the mapping forwarding plane and the generalized forwarding plane are mainly responsible for routing data packets sent and received between host nodes accessed through different access networks.
  • the access service node is located at the demarcation point between the backbone network and the access network, and has interfaces with the access network and the backbone network respectively. It is responsible for allocating RIDs for various types of host nodes, providing access services, maintaining host node connections, and maintaining Query the AID-RID mapping relationship of the communication peer and forward the host node data. There is no overlap between the access network and the backbone network in the topology relationship. In the access network section, the host node uses the AID for addressing.
  • the ILR Identity Location Register
  • PTF Packet Transfer Function
  • the ILR share the AID-RID mapping relationship of the users in the network, and the two can be located in the same physical entity.
  • many ILR/PTF devices use DHT algorithm for distributed storage and processing, which has high reliability and strong storage and processing capabilities.
  • the main function of the generalized forwarding plane is to select and forward data packets based on the RID in the data packet.
  • the General Switch Router (GSR) is mainly used to route and forward data with the RID as the destination address.
  • Sl and Dl are control signaling and user data interfaces between the host node and the ASN, respectively.
  • S1 is a signaling interface for host node access management
  • D1 is an interface for data forwarding and reception.
  • the format of the data packet on the D1 interface is:
  • D3 is the external interface with the generalized forwarding plane.
  • the format of the data packet on the D3 interface is: Layer 2 Header Source RID Destination RID Source AID Destination AID Data Message Payload
  • S4 is a signaling interface between the ASN and the mapping forwarding plane. It is used to query and maintain the AID-RID mapping relationship.
  • D4m is the data forwarding interface between the ASN and the mapping forwarding plane.
  • the format of the data packet on the D4m interface is:
  • the source RID corresponds to the source AID
  • the RIDm is the routing address of the ILR/PTF in the mapping forwarding plane connected to the ASN, and the routing address is configured on each ASN.
  • Step 201 The user terminal (the host identity is AID1) is connected to the access service node ASN1 after being powered on, and the ASN1 allocates the location route identifier RID1 to the user terminal, initiates a registration process to the ILR in the mapping forwarding plane, and the ILR processes the registration process of the user terminal. And save the mapping relationship of AID1-RID1 in the registration information.
  • the above process of the user terminal is referred to herein as an online process, and the state of the user after the connection and registration is completed is online. In the opposite case, the state in which the user terminal does not access any of the service nodes is called an offline state or an offline state.
  • Step 202 The service server (the host identity is AIDs) is connected to the access service node ASN2,
  • ASN2 allocates location routing identifier RIDs to the service server, and initiates a registration process to the ILR in the mapping forwarding plane.
  • the ILR saves the mapping relationship of AIDs-RIDs in the registration information.
  • the business server is also online.
  • Step 203 When the service server needs to actively push the data packet to the user terminal (AID1), the service server first encapsulates the data packet, sets the destination address to be AID1, and the source address is AIDs, and then sends the data packet to ASN2. .
  • ASN2 receives the data packet sent by the service server with the destination address of AID1 (following D1). After the interface data packet format is used, the local cached AID-RID mapping table is queried according to AID1. If the mapping relationship of AID1-RID1 is found, RID1 information (as the destination RID) and RIDs information are added to the data packet (as The source RID is converted into a D3 interface packet format and sent to the generalized forwarding plane for forwarding. If the AID1-RID1 mapping relationship is not found in the locally cached AID-RID mapping relationship table, the ASN2 is in the data.
  • the RIDm (as the destination RID) and the RIDs information (as the source RID) are added to the packet header, and the data packet is converted to the D4m interface packet format, and then sent to the mapping forwarding plane for processing; the mapping forwarding plane is received on the ASN2.
  • the routing is performed according to the destination AID1 in the data packet, and the route is routed to the corresponding ILR/PTF node.
  • the PTF node replaces the data packet with the RID1 information.
  • RIDm information is dropped and forwarded to the generalized forwarding plane through the D3 interface;
  • the generalized forwarding plane After receiving the data packet from the ASN2 or the mapping forwarding plane, the generalized forwarding plane uses the destination RID1 in the data packet as the routing identifier, and sends the data packet to the ASN1 where the user terminal is located.
  • the ASN1 After receiving the data packet sent by the generalized forwarding plane, the ASN1 strips the outer RID information (including RID1 and RIDs) and sends it to the user terminal according to the D1 interface data packet format.
  • the above process implements the function that the service server actively pushes data packets to the user terminal.
  • the implementation scheme for supporting the active push of the service server whose user terminal is not online is further explained below.
  • the present invention deploys a PUSH capability server based on the identity and location separation architecture shown in FIG. 2, and the PUSH capability server provides a PUSH capability service for a specific group of users, located at the location of the host node.
  • the PUSH capability server is connected to the ASN3, and provides a PUSH capability service for the user terminal connected to the ASN1 in the figure.
  • the destination address of the data packet is the AID (AIDp) of the PUSH capability server served by the user terminal (AID1 is included in the payload of the data packet or In other fields, the specific format is not specified in the present invention).
  • the PUSH data packet sent by the service server reaches the PUSH capability server through the ASN2, the mapping forwarding plane, and the generalized forwarding plane. After receiving the PUSH data packet, the PUSH capability server is responsible for forwarding to the user terminal. If the user terminal is offline, the PUSH capability server fails to send the PUSH data packet to the user terminal, and the PUSH capability server stores the PUSH data packet for subsequent retry transmission.
  • the PUSH capability server learns that the user terminal is online, the PUSH data packet is retrieved and sent to the user terminal.
  • the method for the PUSH capability server to know whether the user terminal is online is as follows: After the user terminal is online, the user terminal actively sends an online notification message message (the destination AID is AIDp) to the PUSH capability server that provides the service. At this time, the PUSH capability server may take out the PUSH message that it has stored and has not successfully sent, and then send it to the user terminal again.
  • the PUSH capability server may take out the PUSH message that it has stored and has not successfully sent, and then send it to the user terminal again.
  • each user terminal has only one corresponding PUSH capability server, and both the user terminal and the service server know the AIDp of the PUSH capability server.
  • Possible solutions include:
  • the AIDp of the PUSH capability server can be derived from the AID of the user terminal according to a preset rule; for example, if the AID1 is a numeric string, the last several positions of the AID1 are all 0s, as the AIDp of the PUSH capability server (this method) A small amount of AID value space is occupied. If AID1 is a URL (such as userl@groupl.domainl), you can set the AIDp of the PUSH capability server to pushserver@group 1. domain 1.
  • the user terminal selects a PUSH capability server by itself and provides the AIDp of the PUSH capability server to the service server in advance. For example, when the user terminal customizes the weather forecast information to the service server, in addition to providing its own AID, it also provides the AIDp of the PUSH capability server of its choice for the service server to record.
  • the system configures its corresponding PUSH capability server at the user terminal, and configures the PUSH capability server corresponding to the user terminal at the service server.
  • the AID of the PUSH capability server is configured at both the user terminal and the service server.
  • the host node when the host node goes online, it initiates a registration process to the ILR in the mapping forwarding plane. When the host node goes offline, it also forwards the mapping to the mapping. The ILR in the plane initiates the logout process, so the ILR in the map forwarding plane has the online or offline real-time status of the host node.
  • the present invention expands the function of the mapping forwarding plane on the basis of the identity identification and the location separation architecture shown in FIG. 2, and supports the subscription of the online status of the user terminal, as follows:
  • the service server sends the ASN2 to the ASN2 through the S1 interface.
  • a user status subscription message (including the AID of the specific user terminal).
  • the ASN2 forwards the message to the mapping forwarding plane through the S4 interface.
  • the ILR in the mapping forwarding plane (that is, the ILR registered by the user terminal) is at the user terminal.
  • a status change notification message is sent to the service server via the S4 interface through the ASN2, and the notification message carries the current online or offline of the user terminal. status information.
  • the ILR may also return a response message to the service server, where the response message carries the current online or offline status information of the user terminal, and when the status of the subsequent user terminal changes, the ILR sends a status change notification message. Give the business server.
  • the service server can determine whether or not to actively push the data packet to the user according to the user status, including:
  • the service server needs to push the data message to the user terminal, the status of the user terminal is determined. If the user is in the online state, the data is pushed to the user terminal. If the user is offline, the service server does not perform the service to the user terminal. The data message is pushed, and the data message is saved. After the user terminal is notified that the user terminal is online, the data message is pushed to the user terminal.
  • the above embodiment can also be modified, for example, a host node
  • the specific format of the user status subscription message and the user status change notification message of the S1 interface and the S4 interface used in the present invention is not specifically defined in the present invention.
  • This solution does not need to deploy a PUSH capability server on the network.
  • the service server can grasp the online or offline status of the user terminal.
  • the present invention expands the function of mapping the forwarding plane on the basis of the identity identification and location separation architecture shown in FIG. 2, and supports the subscription of the online status of the user terminal; and deploys the PUSH capability server in the network at the same time.
  • the PUSH capability server is connected to ASN3.
  • the specific process is as follows: First, the same procedure as in the first embodiment of the invention, when the service server needs to actively push the data message to the user terminal (AID1), set the destination address of the data packet to the AID (AIDp) of the PUSH capability server served by the user terminal. Send the PUSH data packet to the PUSH capability server. After failing to forward the PUSH data packet to the user terminal, the PUSH capability server stores the data packet for subsequent retry transmission.
  • the PUSH capability server learns that the user terminal is online, the PUSH data packet is retrieved and sent to the user terminal.
  • the method for the PUSH capability server to know whether the user terminal is online is:
  • the PUSH capability server stores the PUSH data packet, and sends a user status subscription message (including the AID1 of the user terminal) to the ASN3 through the S1 interface. After receiving the message, the ASN3 forwards the message to the mapping forwarding plane through the S4 interface.
  • the ILR (that is, the ILR registered by the user terminal) will be sent to the PUSH capability server via the A43 through the S4 interface when the online status of the user terminal changes (eg, from online to offline, or from offline to online). Status change notification message.
  • the solution does not require the user terminal to have a unique PUSH capability server, and does not require the user terminal to actively send an online notification message to the PUSH capability server after the user terminal goes online.
  • this solution only needs the PUSH capability server to support the user's online status subscription, no need for the service server to support this function, and also reduces the subscription volume and notification message traffic of the mapping forwarding plane.
  • the present invention expands the function of the mapping forwarding plane based on the identity identification and location separation architecture of FIG. 2, and integrates the storage retry function of the PUSH capability server, which is specifically described as follows:
  • the PUSH capability is added in the mapping forwarding plane.
  • the logical function entity of the server can temporarily store the PUSH data packet sent to the offline user terminal, and then send the user terminal after the line is online.
  • the PUSH capability server and the ILR share the online or offline status information of the user in the network.
  • the PUSH capability server and the PTF and the ILR may be located in the same physical entity or in different physical entities.
  • the process of the service server actively pushing data packets to the user terminal is as follows:
  • Step 601 The service server sends a data packet that is actively pushed to the user terminal (AID1) to the ASN2 through the D1 interface, where the corresponding identifier is carried, and the data packet is a PUSH data packet.
  • the paper gives a method for carrying the D1 interface);
  • Step 602 After receiving the data packet, the ASN2 identifies that the data packet is a PUSH data packet, and then forwards the data packet to the mapping forwarding plane through the D4m interface, where the corresponding packet is carried, and the data packet is identified as PUSH data.
  • the message (the following is a method for carrying the D4m interface);
  • Step 603 After receiving the data packet, the mapping forwarding plane identifies that the PUSH data packet is a PUSH data packet, and then queries the online or offline state information of the user terminal according to the AID1, and provides the user with the online or offline status information of the user terminal.
  • the terminal pushes the data packet, which specifically includes:
  • the mapping relationship between the destination AID1 and the RID1 is detected, and the RIDm information is replaced by the RID1 information in the PUSH data packet and forwarded to the generalized forwarding plane through the D3 interface, and finally the ASN1 connected by the user terminal is connected. Arrive at the user terminal;
  • the mapping forwarding plane temporarily stores the PUSH data file, and after forwarding the user terminal, the user terminal forwards according to the foregoing steps, that is, the mapping relationship of the destination AID 1 -RID 1 is detected, and the PUSH data is collected.
  • the RID1 information is replaced by the RID1 information in the message and forwarded to the generalized forwarding plane through the D3 interface, and finally reaches the user terminal through the ASN1 connected by the user terminal.
  • This solution does not need to separately deploy the PUSH capability server, but adds corresponding functions in the mapping forwarding plane. On the one hand, it can fully share the online or offline status information of the users owned by the ILR, and on the other hand, can use the mapping forwarding intra-latency ILR/PTF distributed.
  • the networking architecture (using the DHT algorithm) provides reliable data packet storage and processing capabilities, as well as extremely large PUSH data packet storage capacity.
  • the solution does not require the service server to support the user's online or offline subscription, and does not need to send PUSH data packets to retry.
  • mapping forwarding plane must identify which data packets need to be stored and subsequently retransmitted when they cannot be sent (retransmitted when the user goes online).
  • a feasible solution is: When the ASN2 of the service server forwards the data packet to the mapping forwarding plane via the D4m interface, it carries the indication that the data packet is a PUSH data packet.
  • D4m is the data forwarding interface between the ASN and the mapping forwarding plane, and the D4m interface.
  • the data packet format is:
  • the source RID corresponds to the source AID
  • the RIDm is the routing address of the ILR/PTF in the mapping forwarding plane connected to the ASN, and the routing address is configured on each ASN.
  • the invention proposes:
  • a different RIDm may be used to identify whether the data packet is a PUSH data packet.
  • the value of the RIDm field is a specified value, the current data packet is identified as a PUSH data packet.
  • the data packet format of the D4m interface can also be expanded to add some flag bits, for example:
  • this data message is a PUSH data message; other flag bits can be used for the expansion of other functions in the future.
  • ASN2 that is, the access service node of the service server
  • ASN2 identifies which data packets are PUSH data packets
  • the service server has at least two AIDs; for PUSH data messages and non-PUSH data messages, the service server uses different AIDs as initiator identifiers, for example, for non-PUSH data messages, AIDsl is used; for PUSH Data packet, using AIDs2; configured at ASN2, so that ASN2 knows that the data packet when the initiator is identified as AIDs2 is a PUSH data packet;
  • the format of the data packet of the existing D1 interface is as follows: On this basis, you can add a data packet format of the D1 interface, as follows: Layer 2 header AIDx AIDy Source AID Destination AID Data message payload
  • AIDx is a special AID value, which can be the AID of the data message initiator, or it can be composed of some flag bits. These flags can be used to carry some special information (for example, indicating that the data packet is a PUSH data packet. ).
  • AIDy is a special AID value that is used to indicate that the ASN performs special processing.
  • the special processing may be: forwarding the PUSH data packet to the mapping forwarding plane integrated with the PUSH capability server function (applicable to the invention scheme 4); forwarding the PUSH data packet to the PUSH capability server in the network (applicable to the invention solution 1) 3, at this time, the service server is not required to know the AID of the PUSH capability server; or, the ASN anonymizes the data packet, that is, the real AID of the data packet initiator is hidden in the data packet forwarded by the ASN. .
  • AIDy can be a special value agreed upon in the network, or it can be a specific value configured on the host node and the ASN to which it is connected. Different AIDy values can be used to indicate different special processing; the same AIDy can be used, and AIDx value information can be used to distinguish different special processing.
  • the service server When the service server needs special processing by ASN2, it will add AIDx and AIDy to the normal data packet to form the new data format as described above.
  • ASN2 After receiving this data message, ASN2 can recognize that it is a message that requires ASN2 to perform special processing according to AIDy. After special processing, ASN2 will strip the AIDx and AIDy fields of this data packet and perform normal processing (for example, adding RID information and forwarding to the generalized forwarding plane or mapping forwarding plane).
  • the PUSH packet is stored and sent by the PUSH capability server (scheme 1, 3) or the mapping forwarding plane (scheme 4), and the service server does not know whether the PUSH packet finally reaches the user terminal. If the service server wants to know whether the PUSH packet is successfully sent to the user terminal, the service server may send a PUSH data packet to the PUSH data packet, and the PUSH capability server or the mapping forwarding plane successfully sends the PUSH data packet to the user. After that, a special data packet (which carries the information that the PUSH data packet has been successfully sent) will be sent to the service server.
  • the status report indication flag as described above may be carried by the flag bit of the D4m interface extension message described above and the AIDx or AIDy of the D1 interface extension.
  • the special data packet (which carries the information that the PUSH data packet has been successfully transmitted) as described above is not specifically specified in the present invention.
  • the present invention further provides an implementation system for supporting an active push capability of a data packet, the system being a system based on an identity identification and a location separation framework, where the system includes a first host node, a second host node, and a mapping forwarding plane, where :
  • the first host node is configured to obtain online or offline status information of the second host node from the mapping forwarding plane, and push the data message to the second host node according to the online or offline status information.
  • the first host node determines the state of the second host node when the data packet needs to be pushed to the second host node, and pushes the second host node to the second host node if the second host node is in the online state. If the second host node is in an offline state, the first host node saves the data packet, and after learning that the second host node is online, pushing the datagram to the second host node Text.
  • the first host node is further configured to send a user status subscription message to the first access service node where the message is located, where the message includes an identity identifier of the second host node;
  • the first access server node is configured to forward the user status subscription message to a mapping forwarding plane
  • the mapping forwarding plane is configured to send a status change notification message to the first host node when the online status of the second host node changes after receiving the user status subscription message.
  • the system further includes a first access service node, a generalized forwarding plane, and a second access service node, where:
  • the first host node is configured to send a data packet to be sent to the second host node to the first access service node where the second host node is located, where the data packet includes the identity identifier of the second host node;
  • the first access service node is configured to: after the data packet is received, if the location identifier corresponding to the identity of the second host node is locally queried, the location identifier is added to The data packet is sent to the generalized forwarding plane; if the location identifier corresponding to the identity of the second host node is not queried locally, the data packet is encapsulated and sent to Mapping the forwarding plane;
  • the mapping forwarding plane is configured to: after receiving the data packet, query a location identifier corresponding to the identity identifier of the second host node, add the location identifier to the data packet, and forward the data packet. Text to generalized forwarding plane;
  • the generalized forwarding plane is configured to forward the data message to a second access service node where the second host node is located; the second access service node is configured to send the data message to the The second host node.
  • the first host node is a service server or a user terminal
  • the second host node is a service server or a user terminal.
  • the user terminal and the service server have equal status in the network architecture, and are all located in the host node of the access network, and there is no difference in the processes of accessing, registering, and transmitting and receiving data messages. Therefore, the architecture and the process of the present invention are not only applicable to the service server actively pushing data packets to the user terminal, but also applicable to the user terminal pushing data packets to the service server, or data packets between the service servers and the user terminals. Push.
  • the method and system of the present invention are used to reduce PUSH data packets that fail to transmit, thereby saving network transmission capability; reducing the number of retry attempts of data packet pushes, and improving the performance of the service server; The required data packets enhance the user experience.
  • the present invention supports the active push capability of data packets when the user terminal is offline, satisfies the characteristics of the user terminal as a mobile node, saves network transmission capability, and reduces the retry of the service server. Work, and enable the user terminal to receive the required data message in time.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention a trait à un procédé et à un système de mise en œuvre prenant en charge la capacité du pousser active des messages de données. Ce système est basé sur une architecture de séparation des identifiants et des localisateurs, et ledit procédé est appliqué à ce système. Selon ce procédé : un premier nœud hôte obtient, à partir du plan de mappage et de transmission, les informations relatives à l'état en ligne ou hors ligne d'un second nœud hôte, et pousse les messages de données vers ce second nœud hôte en fonction de ces informations d'état en ligne ou hors ligne. Le procédé et le système faisant l'objet de l'invention prennent en charge la capacité du pousser active des messages de données lorsque les terminaux utilisateur sont hors ligne, ils sont conformes aux caractéristiques des terminaux utilisateur lorsque ces terminaux sont des nœuds mobiles, ils économisent la capacité de transmission du réseau, ils limitent le nombre de nouvelles tentatives des serveurs de service et ils permettent aux terminaux utilisateur de recevoir à temps les messages de données dont ils ont besoin.
PCT/CN2010/076798 2009-10-10 2010-09-10 Procédé et système de mise en œuvre prenant en charge la capacité du pousser active des messages de données WO2011041970A1 (fr)

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