CN101237442A - Method, system and device for terminal identification analysis and service transmission in integrated network - Google Patents

Abstract

The invention discloses a method for analyzing terminal identifiers in an integrated network. The method includes: A. receiving a request message sent by a source terminal, the request message including the service identifier requested by the source terminal; B. Find out the target terminal identifier corresponding to the service identifier requested by the source terminal from the corresponding relationship between the terminal identifier and the service identifier supported by the terminal; C. return a reply message to the source terminal, and the reply message includes the Describe the destination terminal ID. Through the method of the present invention, the terminal identification analysis process is realized, and good support is provided for the source terminal of the external network to access the integrated network; in addition, the effective authentication of the identification is realized to ensure the legality and authority of the identification, The security of network data transmission is guaranteed. The invention also discloses a terminal identification analysis system and device in the integrated network, and a service transmission method, system and device in the integrated network.

Description

Method, system and device for terminal identification analysis and service transmission in integrated network

technical field

The present invention relates to network transmission technology, in particular to a method, system and device for terminal identification analysis and service transmission in an integrated network.

Background technique

The integrated network is a typical representative of the next generation network (NGN), which can integrate the advantages of various existing networks and well support the transmission of many different services. The integrated network includes various network service services provided by operators or third-party value-added service providers. Various service services are identified by unique service identifiers, and terminals in the integrated network are also identified by unique terminal identifiers.

In traditional networks, the correspondence between IP addresses and domain names is mainly realized through Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP) or Dynamic Domain Name Resolution System (DDNS), that is, resolution based on IP addresses.

DNS technology is a distributed database that allows local control over various parts of the entire database. At the same time, the entire network can also access the data of each part through the client-server method.

DHCP was designed by the Internet Engineering Task Force (IETF) to reduce the burden of planning, management and maintenance of the Transport Layer Control Protocol/Internet Interconnection Protocol (TCP/IP) network, and to solve the problem of lack of IP address space. The operating mechanism of the current DHCP technology is roughly as follows: use the DHCP server to centralize the TCP/IP network settings and then dynamically assign IP addresses to terminals requesting access, basically without human intervention by network managers. Moreover, DHCP is an extension of the Bootstrap Protocol (BOOTP), which can support diskless workstations that require network configuration messages, and systems that require fixed IPs.

DDNS generally consists of two parts, the first part is located in the DNS server, and the other part is the DHCP server. Every time a user connects to the network, the DHCP server will assign a dynamic IP address to the host running the DHCP source terminal program, that is, terminal A, through message delivery. At the same time, the DHCP server obtains the domain name of terminal A through message interaction, and then DHCP The server will transmit the dynamic IP address assigned by terminal A to the DNS server, and the DNS server will immediately update the data and bind the new IP address to the domain name of terminal A, thus completing the service of dynamic domain name resolution, and other hosts can access the terminal through the domain name A's.

Since the IP address is not used as the terminal identifier in the integrated network, the resolution of the terminal identifier in the integrated network cannot be realized through the above method. At the same time, traditional technologies such as DNS cannot indicate the correspondence between network services, network resources, and host identifiers. Therefore, using these existing technologies cannot realize the correspondence between terminal identifiers and service identifiers in an integrated network.

In addition to the above-mentioned central server method such as the DNS method, the existing methods for domain name resolution and resource search also have a non-central infrastructure search method in a peer-to-peer manner between hosts, such as the peer-to-peer (P2P) method.

The P2P method is a distributed network system without central control and hierarchical structure. It is composed of several interconnected and cooperative nodes. Each node plays the role of server and source terminal at the same time. They run the same resource search algorithm. The lookup rule for finds the corresponding node with a specific resource. As shown in Figure 1, the compatible hash algorithm is taken as an example to illustrate the process of domain name resolution and resource search. This algorithm proposes a fast distributed computing method for hash functions. Given some keywords, map the keywords to reliable nodes in the system, and ensure that all nodes can receive to roughly the same number of keywords. Each node in the network only needs to know the resource information of a small number of other nodes. When searching, the node will query its successor nodes in turn until the keyword is found or the entire network is traversed. For example, when node N8 needs to inquire about a resource record whose keyword is k54, it first finds that node N42 has the keyword closest to keyword k54 in its resource record according to its own stored resource record table, and then asks node N42 to see if N42 Knowing which node is closer to the key k54, by repeating this process, the node N8 can finally know the storage location of the resource record whose key is k54. The search process is shown in Figure 2.

The P2P method can be applied in the traditional network or in the integrated network without the support of the central infrastructure server. However, since the P2P method does not have a central server responsible for the unified management and authentication of these resource records, the authority of the resource records The security of the network cannot be guaranteed. If a node maliciously claims to the network that it stores or supports a certain keyword service, other nodes cannot verify it; at the same time, the security of the network cannot be guaranteed. If a node in the network is maliciously attacked, it cannot Provide analysis and search services for this node; this peer-to-peer distributed resource storage format is not conducive to management. When a new node enters or a node exits, it is difficult for other nodes to obtain messages in a short time to perform resource records. modification; in addition, the P2P method cannot realize the analysis and resource search based on the terminal identification in the integrated network.

Contents of the invention

Embodiments of the present invention provide a method and system for terminal identification analysis and service transmission in an integrated network, so as to solve the problem in the prior art that terminal identification-based analysis cannot be implemented in an integrated network.

An embodiment of the present invention provides a terminal identification analysis method in an integrated network, the method includes the following steps:

A. receiving the request message sent by the source terminal, the request message including the service identifier requested by the source terminal;

B. Find out the target terminal identifier corresponding to the service identifier requested by the source terminal from the correspondence between the pre-saved terminal identifier and the service identifier supported by the terminal;

C. Returning a reply message to the source terminal, where the reply message includes the destination terminal identifier.

The embodiment of the present invention also provides a terminal identification analysis system in an integrated network, the system includes an identification server, a source terminal and more than one destination terminal, wherein,

the source terminal,

including a first sending unit, configured to send a request message to the identification server, where the request message includes the service identification requested by the source terminal; and

a receiving unit, configured to receive a reply message including the destination terminal identifier returned by the identification server to the request message;

The identification server is configured to, after receiving the request message sent by the source terminal, find out the corresponding relationship between the service identification requested by the source terminal from the pre-stored correspondence between the terminal identification and the service identification supported by the terminal. and return a reply packet to the source terminal, where the reply packet includes the destination terminal identifier.

The embodiment of the present invention also provides a service transmission method in an integrated network, which is applied to a system including an identification server and at least two terminals, and the method includes the following steps:

A. The source terminal sends a request message to the identification server, and the request message includes the service identification requested by the source terminal;

B. The identity server finds out the destination terminal identity corresponding to the service identity requested by the source terminal from the correspondence between the pre-saved terminal identity and the service identity supported by the terminal;

C. The identification server returns a reply message to the source terminal, and the reply message includes the target terminal identification;

D. The source terminal establishes a connection between destination terminals corresponding to the destination terminal identifier, and performs service transmission.

The embodiment of the present invention also provides a service transmission system in an integrated network, the system includes an identification server, a source terminal and more than one destination terminal, wherein

The source terminal includes:

a first sending unit, configured to send a request message to the identification server, where the request message includes the service identification requested by the source terminal; and

a receiving unit, configured to receive a reply message including the destination terminal identifier returned by the identification server to the request message;

A service request unit, configured to establish a connection between destination terminals corresponding to the destination terminal identifier, and perform service transmission, and the request message includes the service identifier requested by the source terminal;

The identification server is configured to find out the target terminal identification corresponding to the service identification requested by the source terminal from the pre-saved correspondence between the terminal identification and the service identification supported by the terminal, and return a reply to the source terminal message, the reply message includes the target terminal identifier;

The destination terminal is configured to establish a connection with the source terminal and perform service transmission.

The embodiment of the present invention also provides a terminal, which is applied to an integrated network including an identification server, and the terminal includes:

a first sending unit, configured to send a request message to the identification server, where the request message includes the service identification requested by the terminal;

The receiving unit is configured to receive a reply message returned by the identification server to the request message, where the reply message includes the target terminal identification corresponding to the service identification requested by the terminal.

An embodiment of the present invention also provides an identification server, which is applied to an integrated network including at least two terminals, and the identification server includes:

a first receiving unit, configured to receive a request message sent by the terminal, where the request message includes a service identifier requested by the terminal;

The search unit is configured to find out the terminal identifier corresponding to the service identifier requested by the terminal from the pre-saved correspondence between the terminal identifier and the service identifier supported by the terminal according to the request message, and return to the terminal A reply message, where the reply message includes the terminal identifier corresponding to the requested service identifier.

In the embodiment of the present invention, after the source terminal sends the request message to the identification server, the request message includes the service identification requested by the source terminal, and the identification server uses the pre-saved terminal identification and the service identification supported by the terminal The method of finding out the destination terminal identifier corresponding to the service identifier requested by the source terminal in the corresponding relationship, and returning the reply message including the destination terminal identifier to the source terminal realizes the analysis process of the terminal identifier in the integrated network On this basis, the source terminal establishes a connection with the destination terminal according to the identifier of the destination terminal to perform service transmission, thus realizing the process of service transmission in the integrated network. Through the above method, it provides good support for the source terminal of the external network to access the integrated network, which is conducive to realizing the compatibility and intercommunication between the integrated network and various existing networks; The legitimacy and authority of the network guarantee the security of network data transmission.

Description of drawings

FIG. 1 is a schematic diagram of a resource search process of a P2P compatible hash method in the prior art;

FIG. 2 is a schematic diagram of the resource search process of the compatible hash method in the P2P mode in the prior art;

3 is a schematic structural diagram of a terminal identification analysis system in an integrated network in an embodiment of the present invention;

FIG. 4 is a schematic flow chart of the steps of the terminal identification analysis method in Embodiment 1 of the present invention;

Fig. 5 is a schematic diagram of the Request message format of the extended DHCP protocol in Embodiment 1 of the present invention;

Fig. 6 is a schematic diagram of the Reply message format of the extended DHCP protocol in Embodiment 1 of the present invention;

Fig. 7 is the schematic diagram of the ID UPDATE message format of the extended DHCP agreement among the embodiment of the present invention 1;

Fig. 8 is a schematic diagram of the entity structure in Embodiment 2 of the present invention;

FIG. 9 is a schematic flow chart of the steps of the terminal identification analysis method in Embodiment 2 of the present invention;

FIG. 10 is a schematic diagram of the Reply message format of the extended DHCP protocol in Embodiment 2 of the present invention;

Fig. 11 is the ID UPDATE message structural representation of the extended DHCP agreement in the embodiment of the present invention 2;

FIG. 12 is a schematic structural diagram of a service transmission system in an integrated network in an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a terminal in an embodiment of the present invention;

Fig. 14 is a schematic structural diagram of an identification server in an embodiment of the present invention.

Detailed ways

After the source terminal sends the request message to the identification server, the identification server finds out the destination terminal identification corresponding to the service identification requested by the source terminal from the correspondence between the pre-saved terminal identification and the service identification supported by the terminal, And return a reply message to the source terminal, the request message includes the service identifier requested by the source terminal, and the reply message includes the target terminal identifier, so that the process of terminal identifier resolution in the integrated network is realized; on this basis Above, the source terminal establishes a connection with the destination terminal according to the destination terminal identifier, and performs service transmission, which realizes the process of service transmission in the integrated network.

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 3 , it is a schematic structural diagram of a terminal identification analysis system in an integrated network according to an embodiment of the present invention. The system includes an identification server 11 , a source terminal 12 and more than one destination terminal. Wherein, the source terminal 12 includes a first sending unit and a receiving unit, the first sending unit is used to send a request message to the identification server 11, the request message includes the service identification requested by the source terminal; the receiving unit is used to receive the identification The server 11 returns a reply message including the destination terminal identifier for the request message; after receiving the request message sent by the source terminal, the identification server 11 is used to select the terminal identifier from the pre-saved terminal identifier and the service supported by the terminal. Find out the destination terminal identifier corresponding to the service identifier requested by the source terminal 12 from the corresponding relationship of the identifiers, and return a reply message to the source terminal 12, the reply message including the destination terminal identifier.

The source terminal 12 also includes a second sending unit, which is further configured to confirm the service identifier in the reply message when the request service identifier is also included in the reply message, and the service identifier of the request is the same as the service identifier requested by itself. information, and send an identity update message to the identity server 11, wherein the identity update message includes the corresponding relationship between the source terminal identity and the service identity supported by the source terminal; the identity server 11 is also used to receive the The identification update message sent by the source terminal, and if the corresponding relationship between the source terminal identification and the service identification supported by the source terminal is not saved, the corresponding relationship is saved.

When the system further includes an identification authentication server 13, the identification server 11 is also configured to send the identification update message to the identification identification server 13; the identification identification server 13 is configured to receive the identification update message forwarded by the identification server , and when the corresponding relationship between the source terminal identifier and the service identifier supported by the source terminal is not saved, the corresponding relationship is saved, and the survival time of the corresponding relationship is set. When the survival time is reached, the saved corresponding relationship Relationship deleted.

When the source terminal 12 is not a terminal in the integrated network, the identification verification server 13 is also used to send the undistributed terminal identification to the identification server 11; One of the identifiers is selected and assigned to the source terminal 12 as the terminal identifier in the integrated network.

In the embodiment of the present invention, the terminal that initiates the request message is called the source terminal, and the terminal that can provide the service requested by the source terminal is called the destination terminal.

The terminal identification analysis method in the integrated network in the embodiment of the present invention is applied to a system including an identification server and at least two terminals, and first receives the request message sent by the source terminal, and the request message includes the requested information of the source terminal. service identifier, and then find out the destination terminal identifier corresponding to the service identifier requested by the source terminal from the correspondence between the pre-saved terminal identifier and the service identifier supported by the terminal, and return a reply message to the source terminal , the reply packet includes the destination terminal identifier. The method in the embodiment of the present invention will be further described in detail below.

Embodiment 1 is the parsing process of the terminal identifier when the source terminal in the integrated network initiates a service request, as shown in FIG. 4 , which is a schematic flow diagram of the steps in Embodiment 1 of the present invention. The method includes the following steps:

Step 401: the process of assigning the target terminal identifier, which includes the following steps:

Step A1: The internal source terminal installed with the extended DHCP protocol sends a request (Request) message to the identification server also installed with the extended DHCP protocol, and the Request message includes the source terminal identification, the service supported by the source terminal The ID and the requested service ID, since the source terminal is inside the integrated network, the terminal ID has been allocated in advance, so it does not need to be re-allocated by the ID server.

Step A2: After the identification server receives the Request message, it inquires from the pre-saved correspondence between the terminal identification in the system containing more than one terminal and the service identification supported by the terminal whether there is any information that can provide the request in the Request message. The destination terminal of the service, that is, query whether to store the destination terminal identifier corresponding to the service identifier requested by the source terminal. If saved, the identification server sends a reply (Reply) message to the source terminal, which includes the requested service identification and the target terminal identification corresponding to one or more requested service identifications, that is, informs the source terminal that it can send a message to the source terminal. It provides the target terminal identification of the requested service; if it is not saved, the identification server still sends a Reply message to the source terminal, and contains failure (UnspecFail) information in the status code field, informing the source terminal that there is no other terminal that can provide it with the request. The destination terminal of the service.

As shown in Figure 5, it is a schematic diagram of the Request message format of the extended DHCP protocol in Embodiment 1 of the present invention, wherein the option code field defines the name of the source terminal host, the option length value can be 128, and the length of the terminal identification is one A unique 128-bit long string, the terminal ID defines the ID of the source terminal, the service ID defines the ID of the service supported by the source terminal, and the request service ID defines the ID of the service requested by the source terminal. For the convenience of application, the source terminal When the supported service ID and requested service ID are less than 128 bits, the extra bits can be filled with 0 bits.

As shown in Figure 6, it is a schematic diagram of the Reply message format of the extended DHCP protocol in Embodiment 1 of the present invention, wherein the option code field defines the name of the identification server, the option length is the length of the identification server name, and the status code field defines The current state of the message, for example, if the identification server has inquired that the corresponding relationship between the requested service identification and the destination terminal identification has been saved, the status code field is success (success) information, if the requested service identification and the destination terminal identification have not been saved In the case of the corresponding relationship between identifiers, the status code field is UnspecFail information, the terminal identifier defines the terminal identifier that identifies the server, the service identifier defines the service identifier that identifies the source terminal request saved by the identifier server, and the destination terminal identifier defines the service that supports the request Identified terminal.

Step 402: The identification server and the source terminal interact and negotiate whether to perform an identification update process, which includes the following steps:

Step A3: After receiving the Reply message, the source terminal needs to confirm the information in the Reply message. For example, when the Reply message also includes the requested service identifier, and the requested service identifier is the same as the requested service identifier in the Request message, the source terminal confirms the information in the Reply message, and checks the information in the Reply message. Relevant option information indicates acceptance, and sends an ID update (ID_UPDATE) message to the ID server for ID update. The ID_UPDATE message at least includes the corresponding relationship between the source terminal ID and the service ID supported by the source terminal. If the source terminal does not accept the relevant option information in the received Reply message, such as the requested service identifier in the Reply message is inconsistent with the requested service identifier in the Request message, then send a Reply to the identification server In the message, the content of the option is the same as that received, but the status code field is changed to UnspecFail, and the update process is stopped at this time.

Step A4: When the identification server receives the ID_UPDATE message sent by the source terminal, it checks the internal records to determine whether to save the corresponding relationship between the source terminal identification and the service identification supported by the source terminal, that is, to determine whether other terminals have already used it The corresponding relationship between the terminal identifier of the source terminal that initiated the Request message and the service identifier is updated. If not, then the check is passed, if there is, but when the service identifier is different from the supported service identifier described in step A1, it also means that the check is passed, and the Reply message is sent to the source terminal again, and its content is the same as in step A2, At this time, the negotiation between the identification server and the source terminal is successful, and the identification server saves the corresponding relationship between the source terminal identification and the service identification supported by the terminal. If it is found that the terminal identification of the source terminal that initiated the Request message has been updated with the corresponding relationship with the service identification, and the service identification is the same as the service identification supported in step A1, then the check fails, and the source terminal The terminal sends Reply and Authentication (Authentication) messages, wherein, the option content of the Reply message is consistent with that in step A2, but the content of the status code field is changed to UnspecFail, and the Authentication message requires the source terminal that initiated the Request message to provide information about the terminal identity At this point, the source terminal can choose to stop updating the ID or change the terminal ID of the source terminal host and enter step 1 to resend the Request message.

Step 403: the identification server interacts with the identification verification server to update the identification. The process consists of the following steps:

Step A5: The ID server sends the ID_UPDATE message mentioned in step A3 to the ID authentication server, requesting the ID authentication server to update the ID.

Step A6: After receiving the message sent by the identity server, the identity verification server judges whether a record of the corresponding relationship between the source terminal identity and the service identity supported by the source terminal has been saved. If it does not exist, or exists but the service identifier is not the same as the supported service identifier described in step A1, then save the corresponding relationship between the terminal identifier of the source terminal and the supported service identifier as a new record, and at the same time, The survival time of the record is set, and when the survival time reaches, the identification and authentication server will delete the stored corresponding relationship. Since the source terminal can change the supported service content at any time, if the survival time is not set, when the source terminal changes the supported service content, the stored data will not be updated, which is not conducive to maintenance and management. When the update is successful, the identity authentication server sends a Reply message to the identity server. At this time, the source terminal that initiates the Request message and the destination terminal that can support the service of the request realize data transmission in the integrated network, and the source terminal and its support The corresponding service relationship of the service is stored in the identity server and the identity authentication server. When another source terminal sends a Request message, the source terminal can also participate in data transmission in the integrated network as a destination terminal.

If it is found that there is already an updated record of the corresponding relationship between the terminal identifier of the same source terminal and the service identifier, and the service identifier is the same as the supported service identifier described in step A1, the identifier authentication server sends a Reply to the identifier server. and Authentication message, the status code field of the Reply message is UnspecFail, the identification server forwards these two messages to the source terminal, and stops updating at this time.

As shown in Figure 7, it is a schematic diagram of the ID_UPDATE message format of the extended DHCP protocol in Embodiment 1 of the present invention, the terminal identifier defines the terminal identifier of the source terminal host, and the service identifier defines the service identifier supported by the source terminal, type The field defines the type of the message as an UPDATE message, the class defines the type of the message as an identification message, the identification length defines the length of the service identification, and the lifetime defines the source terminal identification and the service identification supported by the terminal The survival time of the corresponding relationship in the identification authentication server, in this embodiment, when the source terminal sends an ID_UPDATE message to the identification server, the default survival time can be set to 24 hours, and the identification authentication server can change this default survival time, requesting The service identifier defines the service identifier requested by the source terminal, and the destination terminal identifier defines a terminal that supports the requested service identifier.

After passing through steps 401 to 403, the terminal identification analysis process in the integrated network is completed. On this basis, the source terminal can establish a connection between the destination terminals corresponding to the identification according to the obtained destination terminal identification, and perform various services Transmission, for example, data transmission, audio service transmission, or video service transmission can be performed. The following uses the data transmission process as an example to illustrate the service transmission method in the integrated network.

In the case of including the above steps 401 to 403, the service transmission method in the integrated network further includes the step of the source terminal establishing a connection between the destination terminals corresponding to the destination terminal identifier and performing service transmission.

The source terminal establishes a connection with the destination terminal according to the destination terminal identifier information returned by the identifier server, that is, the source terminal establishes a corresponding relationship between its own terminal identifier and connection address identifiers of one or more destination terminals. The connection address identifier is then mapped to the routing address identifier. In addition, if the source terminal is connected to the integrated network through an integrated access switch router, the access address identifier needs to be used and converted into a routing address identifier through the integrated access switch router. The routing address identifier is used in the integrated Routing in the network. Finally, according to the obtained reasonable route selection, the service data is transmitted between the server where the source terminal and the destination terminal are located, and a complete service transmission under the integrated network is completed.

Embodiment 2 is the parsing process of the terminal identification when the source terminal outside the integrated network moves into the integrated network. As shown in FIG. 8, it is a model structure diagram in Embodiment 2 of the present invention. The identification server is composed of several terminals containing terminal identifications in the integrated network. As shown in Figure 9, it is a schematic flow chart of the steps in Embodiment 2 of the present invention, the method includes the following steps:

Step 901: the process of assigning the destination terminal ID, which includes the following steps:

Step B1: the identity authentication server sends the unallocated terminal identity in the identity pool to the identity server.

Step B2: Through the interaction mechanism between the source terminal and the identification server, the source terminal host named iplab.njtu.edu.cn sends a Request message of the network protocol used on the external network to the identification server named ngirc.njtu.edu.cn For example, if the source terminal is a source terminal in the Internet accessing an integrated network, the format of the Request message is an IP message format. The Request message not only includes the service identifier supported by the source terminal and the requested service identifier, but also includes the previous address allocated on the source terminal.

Step B3: The identification server converts the Request message sent by the source terminal into a Request message format suitable for the extended DHCP protocol in the integrated network according to the previous address information, and checks whether there is a service that can provide the request contained in the Request message If it exists, the identification server sends a Reply message to the source terminal, and the Reply message includes the terminal identification identifying the server itself, the requested service identification and one or more destination terminal identifications. The format of the Reply message is shown in Figure 10. The name of the identification server defined by the option code field is ngirc.edu.cn, the length of the option code is 10, the status code field is defined as success, the terminal identification of the identification server is Dfhw125467990jk1237hjelhjkd, and the requested service The ID is 110000000000000000000000000, and the destination terminal IDs are bndkjk46578793783937hsdjf10, bndkjk46578793783937hsdjf11, and bndkjk46578793783937hsdjf12. If it is not saved, the identification server still sends a Reply message to the source terminal, and contains failure (UnspecFail) information in the status code field, informing the source terminal that there is no destination terminal that can provide the requested service to it.

Step B4: After receiving the Reply message, the source terminal host iplab.edu.cn sends a Request message to the identification server ngirc.njtu.edu.cn again, requesting to allocate a terminal identification in the integrated network.

Step B5: After the identification server receives the Request message sent by the source terminal for the second time, it sends a Reply message to the source terminal again, which contains the terminal identification assigned to the source terminal, and the assigned terminal identification is determined by the step In B1, it is generated from the unassigned terminal ID assigned by the ID authentication server to the ID server.

Step 902: The identification server interacts with the source terminal host to negotiate whether to update the client terminal identification. The process includes the following steps:

Step B6: After receiving the Reply message, the source terminal sends an ID_UPDATE message to the ID server after confirming the information in the Reply message, requesting to update the ID.

Step B7: After receiving the ID_UPDATE message, the identification server checks the internal records to determine whether to save the corresponding relationship between the active terminal identification and the service identification supported by the source terminal, that is, to determine whether other terminals have already used the initiated The corresponding relationship between the terminal identifier of the source terminal of the Request message and the service identifier is updated. If not, then the check is passed, if there is, but when the service identifier is different from the supported service identifier described in step B2, it also means that the check is passed, and the terminal identifier assigned by the identification server to the source terminal and the service supported by the terminal The corresponding relationship of the identification is saved and a Reply is returned. If the terminal identifier of the source terminal that initiated the Request message has been updated with the service identifier, and the service identifier is the same as the supported service identifier described in step B2, then the check fails, and a Reply is sent to the source terminal and the Authentication message, wherein the content of the status code field of the Reply message is changed to UnspecFail, and the Authentication message requires the source terminal that initiates the Request message to provide relevant authentication information about the terminal identifier.

Step 903: the identification server interacts with the identification verification server to update the identification. The process consists of the following steps:

Step B8: The identification server sends the ID_UPDATE message mentioned in step B4 to the identification authentication server named Njtu.njtu.edu.cn, requesting the identification authentication server to update the identification.

Step B9: After receiving the message sent by the identity server, the identity verification server judges whether a record of the corresponding relationship between the source terminal identity and the service identity supported by the source terminal has been saved. If it does not exist, or exists but the service identifier is not the same as the supported service identifier described in step B2, then save the corresponding relationship between the terminal identifier assigned by the source terminal and the service identifier supported by the terminal, and become a new record , at the same time, set the survival time of the record, when the survival time reaches, the identification and authentication server will delete the stored corresponding relationship. After the update is successful, the identity authentication server sends a Reply message to the identity server. At this time, the terminal of the source end host and the destination terminal capable of supporting the requested service realize data transmission in the integrated network, and the source end host's The corresponding relationship between the terminal and the services it supports is stored in the identity server and the identity authentication server. When another source terminal sends a Request message, the terminal of the source terminal host can also participate in data transmission in the integrated network as a destination terminal.

If it is found that there is already an identical terminal ID that has been updated with the service ID, and the service ID is the same as the supported service ID described in step B2, the ID authentication server sends a Reply and Authentication message to the ID server, The status code field of the Reply message is UnspeeFail, and the identification server forwards these two messages to the source terminal. At this time, the source terminal can choose to stop updating or request the identification server to reassign the terminal identification.

As shown in Figure 11, it is a schematic diagram of the ID_UPDATE message structure of the extended DHCP protocol in Embodiment 2 of the present invention. The terminal identifier allocated by the source terminal is Hjksdfgert178593fhwkflnuh70, the defined type is update (UPDATE), the defined class is ID_UPDATE, and the identifier length It is 128 bits, the service ID supported by the source terminal is 12000000000000000000000000, the lifetime is 86400 seconds, the requested service ID is 11000000000000000000000000, and the destination terminal IDs are bndkjk46578793783937hsdjf10 and bndkjk4677.

After steps 901 to 903, the process of analyzing terminal identifiers in the integrated network is completed. On this basis, a connection can be established between the source terminal and the destination terminal for various service transmissions. The following takes the data transmission process as an example again to illustrate the service transmission method in the integrated network.

In the case of including the above steps 901 to 903, the service transmission method in the integrated network further includes the step of the source terminal establishing a connection between the destination terminals corresponding to the destination terminal identifier and performing service transmission.

The source terminal establishes a connection with the destination terminal according to the destination terminal identifier information, that is, the source terminal establishes a corresponding relationship between its own terminal identifier and connection address identifiers of one or more destination terminals. Then the connection address identifier is mapped to one or more routing address identifiers, and the routing address identifier is used for routing in the integrated network. Finally, according to the obtained reasonable route selection, the service data is transmitted between the server where the source terminal and the destination terminal are located, and a complete service transmission under the integrated network is completed.

Based on the above service transmission method, an embodiment of the present invention also provides a service transmission system in an integrated network. As shown in FIG. 12, the system includes an identification server 21, a source terminal 22 and more than one destination terminal 23, wherein 22 includes a first sending unit, a receiving unit, and a service request unit, the first sending unit is configured to send a request message to the identification server 21, and the request message includes the service identification requested by the source terminal; the receiving unit is used to Receive the reply message including the destination terminal identifier returned by the identifier server 21; the service request unit is used to establish a connection between the destination terminal 23 corresponding to the destination terminal identifier, and perform service transmission; the identifier server 21 is used for Find out the destination terminal identifier corresponding to the service identifier requested by the source terminal 22 from the correspondence between the pre-saved terminal identifier and the service identifier supported by the terminal, and return a reply message to the source terminal 22, and the reply The message includes the destination terminal identifier; the destination terminal 23 is used to establish a connection with the source terminal 22 and perform service transmission. The service transmission includes data transmission, audio service transmission or video service transmission.

The source terminal 22 also includes a second sending unit, configured to confirm that the requested service identifier is the same as the requested service identifier in the reply packet when the reply packet also includes the requested service identifier. information, and send an identity update message to the identity server 21, the identity update message includes the corresponding relationship between the source terminal identity and the service identity supported by the source terminal; the identity server 21 is used to receive After the identifier update message, if the corresponding relationship between the source terminal identifier and the service identifier supported by the source terminal has not been saved, the corresponding relationship is saved.

When the system further includes an identification verification server 24, the identification server 21 is used to send the identification update message to the identification verification server 24; the identification verification server 24 is used to save the source terminal identification and If there is a corresponding relationship between the service identifiers supported by the source terminal, the corresponding relationship is saved, and the lifetime of the corresponding relationship is set.

When the source terminal 22 is not a terminal in the integrated network, the identification authentication server 24 is used to send the unallocated terminal identification to the identification server 21; Select one of the terminal identifiers and assign it to the source terminal 22 as the terminal identifier in the integrated network.

As shown in FIG. 13 , an embodiment of the present invention also provides a terminal, which is applied to an integrated network including an identification server, and the terminal includes a first sending unit 31 and a receiving unit 32, wherein the first sending unit 31 is used to Send a request message to the identification server, the request message includes the service identification requested by the terminal; the receiving unit 32 is configured to receive a reply message returned by the identification server, the reply message includes the terminal request The terminal ID corresponding to the service ID of .

The terminal also includes a service request unit 33, configured to establish a connection with the destination terminal according to the reply message information, and perform service transmission.

The terminal further includes a second sending unit 34, configured to confirm the reply when the reply message also includes a requested service identifier, and the requested service identifier is the same as the service identifier requested by the terminal. information in the message, and send an identity update message to the identity server, where the identity update message includes the corresponding relationship between the terminal identity sending the request message and the service identity supported by the terminal.

As shown in FIG. 14 , an embodiment of the present invention also provides an identification server, which is applied in an integrated network including at least two terminals, and the identification server includes a first receiving unit 41 and a searching unit 42 . Wherein, the first receiving unit 41 is used to receive the request message sent by the terminal, and send the request message to the search unit 42, which includes the service identifier requested by the terminal; Find out the terminal identifier corresponding to the service identifier requested by the terminal from the pre-saved correspondence between the terminal identifier and the service identifier supported by the terminal, and return a reply message to the terminal, the reply message including the The terminal ID corresponding to the requested service ID.

The identification server also includes a second receiving unit 43 and a saving unit 44 . Wherein, the second receiving unit 43 is configured to receive the identification update message sent by the terminal and send it to the storage unit 44, the identification update message includes the terminal identification of the transmission request message and the service identification supported by the terminal The corresponding relationship; the saving unit 44 is configured to save the corresponding relationship when the corresponding relationship between the terminal identifier and the service identifier supported by the terminal is not saved.

Through the embodiment of the present invention, the corresponding management of the analysis of the corresponding relationship between the terminal identifier and the service identifier is realized, and good support is provided for the source terminal of the external network to access the integrated network, which is beneficial to realize the integrated network and various existing networks Compatibility and interoperability; In addition, it realizes the effective authentication of the identification to ensure the legality and authority of the identification, so that the security of network data transmission is guaranteed.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (21)

1. terminal identifier parsing method in the integrated network is characterized in that this method may further comprise the steps:

A. the request message of reception sources terminal transmission comprises this source terminal requested service sign in the described request message;

B. find out described source terminal requested service the corresponding relation of the service identifiers of supporting from the terminal iidentification preserved in advance and terminal and identify pairing purpose terminal iidentification;

C. return the answer message to described source terminal, described answer message comprises described purpose terminal iidentification.

2. the method for claim 1 is characterized in that, also comprises requested service sign in described answer message, and this requested service sign and described source terminal requested service identify when identical, and step C comprises step afterwards:

The identification renewal message that D1, the described source terminal of reception send at described answer message, described identification renewal message comprises the corresponding relation of the service identifiers that described source terminal sign and this source terminal are supported;

D2, when determining described identification server and not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved.

3. method as claimed in claim 2 is characterized in that, comprises step after the described step D2:

E1, described identification renewal message is sent to the sign authentication server.

4. method as claimed in claim 3 is characterized in that, when the terminal in the not integrated network of described source terminal,

Comprise step after the step B before the C:

B1, receive unappropriated terminal iidentification, and therefrom choose one and distribute to described source terminal as the terminal iidentification in the integrated network from described sign authentication server.

5. terminal identifier parsing system in the integrated network is characterized in that this system comprises identification server, source terminal and an above purpose terminal, wherein,

Described source terminal,

Comprise first transmitting element, be used for request message is sent to described identification server, comprise this source terminal requested service sign in this request message; And

Receiving element is used to receive the answer message that comprises the purpose terminal iidentification that described identification server returns at this request message;

Described identification server, be used for behind the request message that receives described source terminal transmission, find out described source terminal requested service the corresponding relation of the service identifiers of supporting from the terminal iidentification preserved in advance and terminal and identify pairing purpose terminal iidentification, and returning the answer message to described source terminal, described answer message comprises described purpose terminal iidentification.

6. as system as described in the claim 5, it is characterized in that,

Described source terminal also comprises:

Second transmitting element, also be used for also comprising the requested service sign when described answer message, and this requested service sign and self requested service identify when identical, confirm the information in the described answer message, and the identification renewal message sent to described identification server, wherein said identification renewal message comprises the corresponding relation of the service identifiers that described source terminal sign and this source terminal are supported;

Described identification server also is used to receive the identification renewal message that described source terminal sends, and when not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved.

7. as system as described in the claim 6, it is characterized in that described system also comprises:

The sign authentication server, be used to receive the identification renewal message that described identification server is transmitted, and when not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved, and the life span of setting this corresponding relation, and the corresponding relation that after life span arrives, will preserve deletion.

8. as system as described in the claim 7, it is characterized in that, when the terminal in the not integrated network of described source terminal,

Described sign authentication server also is used for unappropriated terminal iidentification is sent to described identification server;

Described identification server also is used for choosing one from described unappropriated terminal iidentification and distributes to described source terminal as the terminal iidentification the integrated network.

9. business transmitting method in the integrated network is applied to comprise in the system of identification server and at least two terminals, it is characterized in that this method may further comprise the steps:

A. source terminal sends to described identification server with request message, comprises this source terminal requested service sign in this request message;

Find out described source terminal requested service the corresponding relation of the service identifiers that B. described identification server is supported from the terminal iidentification preserved in advance and this terminal and identify pairing purpose terminal iidentification;

C. described identification server returns the answer message to described source terminal, and described answer message comprises described purpose terminal iidentification;

D. described source terminal is set up the connection between the purpose terminal corresponding with described purpose terminal iidentification, and the industry of going forward side by side is engaged in transmitting.

10. method as claimed in claim 9 is characterized in that, comprises step after the step C before the D:

C1, in described answer message, also comprise requested service sign, and this requested service sign and described source terminal requested service identify when identical, described source terminal is confirmed the information in the described answer message, the identification renewal message sent to state identification server, described identification renewal message comprises the corresponding relation of the service identifiers that described source terminal sign and this source terminal are supported;

C2, described identification server are after receiving described identification renewal message, and described identification server is preserved this corresponding relation when not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support.

11. method as claimed in claim 10 is characterized in that, when described system also comprises the sign authentication server, comprises step after the step C2 before the D:

C3, described identification server send to described sign authentication server with described identification renewal message;

C4, when described sign authentication server is not preserved the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved, and set the life span of this corresponding relation, the corresponding relation that will preserve after life span arrives is deleted.

12. method as claimed in claim 11 is characterized in that, when the terminal in the not integrated network of described source terminal, C comprises step after the step B before:

B1, described identification server are that described source terminal distributes the terminal iidentification in the integrated network, and this terminal iidentification produces from described sign authentication server sends to the unappropriated terminal iidentification of identification server.

13. service transmission system in the integrated network is characterized in that, this system comprises identification server, source terminal and an above purpose terminal, wherein

Described source terminal comprises:

First transmitting element is used for request message is sent to described identification server, comprises this source terminal requested service sign in this request message; And

Receiving element is used to receive the answer message that comprises the purpose terminal iidentification that described identification server returns at this request message;

The service request unit is used to set up the connection between the purpose terminal corresponding with described purpose terminal iidentification, and the industry of going forward side by side is engaged in transmitting;

Described identification server, the corresponding relation that is used for the service identifiers supported from the terminal iidentification preserved in advance and this terminal finds out described source terminal requested service and identifies pairing purpose terminal iidentification, and returning the answer message to described source terminal, described answer message comprises described purpose terminal iidentification;

Described purpose terminal, be used for and described source terminal between connect the industry of the going forward side by side transmission of being engaged in.

14. as system as described in the claim 13, it is characterized in that,

Described source terminal also comprises:

Second transmitting element, be used for also comprising the requested service sign when described answer message, and this requested service sign and self requested service identify when identical, confirm the information in the described answer message, and the identification renewal message sent to described identification server, wherein said identification renewal message comprises the corresponding relation of the service identifiers that described source terminal sign and this source terminal are supported;

Described identification server also is used for the identification renewal message that the reception sources terminal sends, and when not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved.

15., it is characterized in that described system also comprises as system as described in the claim 14:

The sign authentication server, be used to receive the identification renewal message that described identification server is transmitted, and when not preserving the corresponding relation of the service identifiers that described source terminal sign and this source terminal support, this corresponding relation is preserved, and the life span of setting this corresponding relation, and the corresponding relation that after life span arrives, will preserve deletion.

16. as system as described in the claim 15, it is characterized in that, when the terminal in the not integrated network of described source terminal,

Described sign authentication server also is used for unappropriated terminal iidentification is sent to described identification server;

Described identification server also is used for choosing one from described unappropriated terminal iidentification and distributes to described source terminal as the terminal iidentification the integrated network.

17. a terminal is applied to comprise in the integrated network of identification server, it is characterized in that described terminal comprises:

First transmitting element is used for sending request message to described identification server, comprises the service identifiers of this terminal request in the described request message;

Receiving element is used to receive the answer message that described identification server returns at this request message, the pairing purpose terminal iidentification of the service identifiers that described answer message comprises described terminal request.

18., it is characterized in that described terminal also comprises the service request unit, be used to set up the connection between the terminal corresponding, the industry of the going forward side by side transmission of being engaged in described purpose terminal iidentification as terminal as described in the claim 17.

19., it is characterized in that described terminal also further comprises as terminal as described in the claim 17:

Second transmitting element, be used for also comprising the requested service sign when described answer message, and when the service identifiers of this requested service sign and described terminal request is identical, confirm the information in the described answer message, and the identification renewal message sent to described identification server, wherein said identification renewal message comprises the terminal iidentification of described transmission request message and the corresponding relation of the service identifiers that this terminal is supported.

20. an identification server is applied to comprise in the integrated network of at least two terminals, it is characterized in that described identification server comprises:

First receiving element is used to receive the request message that described terminal sends, and comprises the service identifiers of this terminal request in this request message;

The described unit of searching, be used for finding out from the corresponding relation of the sign of the terminal of preserving in advance and the service identifiers that terminal is supported the pairing terminal iidentification of service identifiers of described terminal request according to this request message, and return the answer message, the pairing terminal iidentification of service identifiers that described answer message comprises described request to this terminal.

21., it is characterized in that described identification server also comprises second receiving element and preserve the unit as identification server as described in the claim 20, wherein,

Described second receiving element is used to receive the identification renewal message that described terminal sends, and described identification renewal message comprises the terminal iidentification of this transmission request message and the corresponding relation of the service identifiers that this terminal is supported;

Described preservation unit is used for receiving described identification renewal message from described second receiving element, and when not finding the corresponding relation of the service identifiers that described terminal iidentification and this terminal support in described preservation unit, this corresponding relation is preserved.

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