CN111465001A - Registration method and device - Google Patents

Registration method and device Download PDF

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Publication number
CN111465001A
CN111465001A CN202010251554.4A CN202010251554A CN111465001A CN 111465001 A CN111465001 A CN 111465001A CN 202010251554 A CN202010251554 A CN 202010251554A CN 111465001 A CN111465001 A CN 111465001A
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China
Prior art keywords
network address
temporary identity
module
private network
public network
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CN202010251554.4A
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CN111465001B (en
Inventor
田新雪
肖征荣
马书惠
贾佳
杨子文
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/255—Maintenance or indexing of mapping tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • 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
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees

Abstract

The invention discloses a registration method, which comprises the following steps: receiving a registration request message broadcast by a card-free terminal, acquiring a temporary identity and a private network address carried in the registration request message, sending a private network address request message carrying the temporary identity to a first SMF, and receiving the private network address returned by the first SMF, if the private network address obtained from the registration request message is consistent with the private network address returned by the first SMF, and the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasting a first public network address request message carrying a blockchain identifier and a private network address of the card-free terminal in the first blockchain, receiving a first public network address response message broadcasted by the first UPF, acquiring the public network address carried in the first public network address response message, establishing and storing a mapping relation among the temporary identity identifier, the private network address and the public network address, signing the mapping relation by using the private key, and broadcasting a distribution message carrying the mapping relation in the first blockchain. Enabling cardless UEs to be addressable when called.

Description

Registration method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a registration method and apparatus.
Background
In the prior art, a UE (User Equipment), such as a mobile terminal, normally accesses a 5G (mobile-telephony system, fifth generation) network by relying on a SIM (subscriber identity Module), and once the UE accesses the 5G network, the UE may have a formal network identity, and a complete call and addressing procedure is provided for the UE using the SIM card in 5G session management. However, when the card-less UE accesses the 5G network in some way, the network identity of the card-less UE is user-defined, and if the SMF (Session Management Function) is a private Address, the call cannot be completed.
Disclosure of Invention
Therefore, the invention provides a registration method and a registration device, which are used for solving the problem that the cardless UE cannot be called and addressed due to the fact that the network identity of the cardless UE is customized by a user in the prior art.
In order to achieve the above object, a first aspect of the present invention provides a registration method, including:
receiving a registration request message broadcast by a card-free terminal, and acquiring a temporary identity and a private network address carried in the registration request message;
sending a private network address request message carrying the temporary identity to a first session management function entity (SMF), and receiving a private network address returned by the first SMF;
if the private network address obtained from the registration request message is consistent with the private network address returned by the first SMF, and the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasting a first public network address request message carrying the blockchain identity and the private network address of the card-free terminal in a first blockchain;
receiving a first public network address response message broadcasted by a first user plane functional entity (UPF), and acquiring a public network address carried in the first public network address response message;
establishing and storing a mapping relation among the temporary identity, the private network address and the public network address;
signing the mapping relation by using a block chain private key of the equipment;
and broadcasting the distribution message carrying the mapping relation in the first block chain.
Preferably, after obtaining the temporary identity and the private network address in the registration request, the method further includes:
if the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasting a registration success message carrying the temporary identity in a first block chain;
after the receiving the private network address returned by the first SMF, the method further comprises:
and if the private network address acquired from the registration request message is consistent with the private network address acquired from the first SMF, establishing a corresponding relation between the temporary identity and the private network address and sending the corresponding relation to other temporary identity registration servers.
A second aspect of the present invention provides a registration method, including:
receiving a first public network address request message sent by a first temporary identity registration server, and acquiring a block chain identifier and a private network address of a card-free terminal carried in the first public network address request message;
if the card-free terminal is determined to be in the jurisdiction range of the equipment according to the private network address of the card-free terminal, broadcasting a first public network address response message carrying a public network address and the block chain identifier in a first block chain;
and receiving a distribution message broadcast by the first temporary identity registration server, acquiring a mapping relation between a private network address and a public network address carried in the distribution message, and locally storing the mapping relation.
A third aspect of the present invention provides a registration method, including:
when receiving a distribution message broadcast by a first temporary identity registration server, inquiring a first block chain account book according to a block chain identifier of the first temporary identity registration server to obtain a public key of a block chain of the first temporary identity registration server;
and verifying the signature of the distribution message according to the blockchain public key of the first temporary identity registration server, if the signature passes the verification, acquiring a mapping relation among a temporary identity, a private network address and a public network address carried in the distribution message, and recording the mapping relation into a first blockchain account book.
Preferably, the method further comprises:
receiving a registration success message sent by a first temporary identity registration server, and acquiring a temporary identity carried in the registration success message;
recording a registration success flag and the temporary identity into the first blockchain ledger.
The invention provides a temporary identity registration server in a fourth aspect, which comprises a receiving module, an obtaining module, a sending module, a judging module, a broadcasting module, a processing module and an encrypting module;
the receiving module is used for receiving a registration request message broadcasted by the cardless terminal, receiving a private network address returned by the first SMF, and receiving a first public network address response message broadcasted by the first user plane functional entity UPF;
the acquisition module is used for acquiring the temporary identity and the private network address carried in the registration request message and acquiring the public network address carried in the first public network address response message;
the sending module is used for sending a private network address request message carrying the temporary identity to a first session management function entity (SMF);
the judging module is used for judging whether the private network address acquired from the registration request message is consistent with the private network address returned by the first SMF and whether the temporary identity acquired from the registration request message is different from the existing temporary identity;
the broadcast module is used for broadcasting a first public network address request message carrying the blockchain identifier and the private network address of the card-free terminal in a first blockchain and broadcasting a distribution message carrying the mapping relation in the first blockchain;
the processing module is used for establishing and storing the mapping relation among the temporary identity, the private network address and the public network address;
and the encryption module is used for signing the mapping relation by utilizing a block chain private key of the equipment.
Preferably, the broadcast module is further configured to broadcast a registration success message carrying the temporary identity in the first block chain if the temporary identity obtained from the registration request message is different from an existing temporary identity;
the processing module is further configured to establish a correspondence between the temporary identity and the private network address if the private network address obtained from the registration request message is consistent with the private network address obtained from the first SMF;
the sending module is further configured to send the correspondence to another temporary identity registration server.
The fifth aspect of the present invention provides a user plane functional entity UPF, where the UPF includes a receiving module, an obtaining module, a judging module, a broadcasting module, and a storing module;
the receiving module is used for receiving a first public network address request message sent by a first temporary identity registration server and receiving a distribution message broadcasted by the first temporary identity registration server;
the acquisition module is used for acquiring the blockchain identifier and the private network address of the card-free terminal carried in the first public network address request message and acquiring the mapping relation between the private network address and the public network address carried in the distribution message;
the judging module is used for determining whether the card-free terminal is in the jurisdiction range of the equipment according to the private network address of the card-free terminal;
the broadcast module is used for broadcasting a first public network address response message carrying a public network address and the blockchain identifier in a first blockchain if the card-free terminal is determined to be in the jurisdiction range of the equipment according to the private network address of the card-free terminal;
the storage module is used for locally storing the mapping relation.
The sixth aspect of the present invention provides an accounting node, where the accounting node includes a receiving module, an inquiring module, a verifying module, an obtaining module, and a recording module;
the receiving module is used for receiving a distribution message broadcast by a first temporary identity registration server;
the query module is used for querying a first block chain account book according to a block chain identifier of a first temporary identity registration server to obtain a public key of a block chain of the first temporary identity registration server when receiving a distribution message broadcast by the first temporary identity registration server;
the verification module is used for verifying the signature of the distribution message according to the block chain public key of the first temporary identity registration server;
the obtaining module is used for obtaining the mapping relation among the temporary identity, the private network address and the public network address carried in the distribution message if the verification is passed;
the recording module is used for recording the mapping relation into a first block chain account book.
Preferably, the receiving module is further configured to receive a registration success message sent by the first temporary identity registration server;
the obtaining module is further configured to obtain a temporary identity carried in the registration success message;
the recording module is further configured to record a registration success flag and the temporary identity into the first blockchain ledger.
The registration method provided by the embodiment of the invention comprises the steps that a Server-A receives a registration request message broadcasted by UE-A, acquires a temporary identity and a private network address carried in the registration request message, sends a private network address request message carrying the temporary identity to an SMF-A, the SMF-A returns the private network address to the Server-A, if the private network address acquired by the Server-A from the registration request message is consistent with the private network address returned by the SMF-A and the temporary identity acquired from the registration request message is different from the existing temporary identity, a first public network address request message carrying a block chain identifier of the UE-A and the private network address is broadcasted in the block chain A, a UPF-A receives the first public network address request message and acquires the block chain identifier of the UE-A and the private network address carried in the first public network address request message, if the UPF-A determines that the UE-A is in the jurisdiction range of the equipment according to the private network address of the UE-A, broadcasting a first public network address response message carrying a public network address and a block chain identifier in a block chain A, receiving the first public network address response message by a Server-A, acquiring the public network address carried in the first public network address response message, establishing and storing a mapping relation among a temporary identity identifier, a private network address and the public network address, signing the mapping relation by using a block chain private key of the equipment, broadcasting a distribution message carrying the mapping relation in the block chain A, receiving the distribution message by a UPF-A, acquiring the mapping relation between the private network address carried in the distribution message and the public network address, and locally storing the mapping relation. The registration method provided by the embodiment of the invention can register the temporary identity for the card-free UE and establish the mapping relation among the temporary identity mark, the private network address and the public network address, so that the temporary identity registration server and the user plane functional entity both record the mapping relation, thereby enabling the card-free UE to be addressed when being called, improving the communication convenience degree of the card-free UE and promoting the development of the card-free UE.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1a is a first schematic flowchart of a registration method according to an embodiment of the present invention;
fig. 1b is a schematic flowchart of a registration method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a call addressing method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first temporary identity registration server according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first UPF according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an accounting node according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The fifth Generation Mobile communication technology (5th Generation Mobile networks, 5G) is The latest Generation cellular Mobile communication technology, namely 4G (The 4th Generation Mobile communication technology), The fourth Generation Mobile communication technology such as L TE-a (L on terminal Evolution-Advanced, long Term Evolution technology upgrade) and WiMax (World Interoperability for Microwave Access)), 3G (The third Generation Mobile communication technology such as UMTS (Universal Mobile Telecommunications System), L TE (L G Telecommunications, long Term Evolution technology)) and 2G (Second Generation Mobile communication technology such as for example GSM (Global Mobile Telecommunications System, 5G) is a high-capacity Mobile communication technology that can be deployed for a high-capacity data-saving after a high-speed GSM-link transfer (GSM-update) is a high-capacity Mobile communication technology, 5G is a high-capacity Mobile communication technology that can be deployed for a high-capacity Mobile Telecommunications System, and a high-bandwidth-extension technology that can be achieved for a high-bandwidth-saving after a high-bandwidth-extension (GSM-update) is reached by The GSM-candidate network (GSM-update System, 5G) and The International Telecommunications System-extension (GSM-update).
31.10.2019, three operators publish 5G commercial packages and formally bring on the line 5G commercial packages on 1.11. 5G mobile networks like earlier 2G, 3G and 4G mobile networks, 5G networks are digital cellular networks in which the service area covered by a provider is divided into a number of small geographical areas called cells. Analog signals representing sound and images are digitized in the handset, converted by an analog-to-digital converter and transmitted as a bit stream. All 5G wireless devices in a cell communicate by radio waves with local antenna arrays and low power autonomous transceivers (transmitters and receivers) in the cell. The transceiver allocates frequency channels from a common pool of frequencies that are reusable in geographically separated cells. The local antenna is connected to the telephone network and the internet through a high bandwidth fiber or wireless backhaul connection. As with existing handsets, when a user passes from one cell to another, their mobile device will automatically "switch" to the antenna in the new cell.
The main advantage of 5G networks is that data transmission rates are much higher than previous cellular networks, up to 10Gbit/s, faster than current wired internet, 100 times faster than previous 4G L TE cellular networks another advantage is lower network latency (faster response time), less than 1 millisecond, and 4G 30-70 milliseconds.
In 5G, services such as audio, video and images facing large-scale users are rapidly increased, and the explosive increase of network traffic can greatly influence the quality of service for users to access the Internet. How to effectively distribute large-flow service content and reduce the time delay of information acquisition of users becomes a big problem for network operators and content providers. The problem cannot be solved by merely increasing the bandwidth, and is also influenced by factors such as route blocking and delay in transmission, processing capacity of a web server, and the like, and the problem is closely related to the distance between user servers.
Aiming at the problem that the cardless UE can not be called and addressed in the prior art, the embodiment of the invention provides a registration method, and a system applied by the method comprises the following steps: a first blockchain network of operator a (blockchain a) and a second blockchain network of operator B (blockchain B). The block chain A comprises a called terminal UE-A, a first Session Management Function (SMF) SMF-A, a first temporary identity registration Server (Server-A), a first User Plane Function (UPF), a node C, a node D and a billing node. The block chain B comprises a calling terminal UE-B, a second Session Management Function entity SMF-B (SMF), a second temporary identity registration Server Server-B, a node C and a node D. Wherein, the node C and the node D are common nodes in the blockchain a and the blockchain B.
As shown in fig. 1a, the registration method provided in the embodiment of the present invention may include the following steps in a stage of registering the temporary identity in the cardless UE (i.e. UE-a):
step 1, Server-A receives the registration request message broadcast by UE-A, and obtains the temporary identity and private network address carried in the registration request message.
In this step, when UE-a registers the temporary identity at Server-a, UE-a signs the registration request message with its own private key, and then broadcasts the registration request message in blockchain a. The registration request message carries a user-defined temporary identity of the UE-a, where the temporary identity includes a terminal identity and a private network IP (Internet Protocol) address. After receiving the registration request message broadcast by the UE-A, the Server-A can verify the signature of the registration request message according to the public key of the UE-A, and if the verification is passed, the Server-A can acquire the temporary identity and the private network address carried in the registration request message.
And step 2, the Server-A sends a private network address request message carrying the temporary identity to the SMF-A.
In this step, the Server-a may send a private network address request message carrying the temporary identity of the UE-a to the SMF-a to query the private network address allocated by the SMF-a for the UE-a.
It should be noted that the Server-a may also determine a SUbscription hidden Identifier (sui) or a Globally Unique Temporary user equipment Identifier (GUTI) of the UE-a according to the Temporary Identity of the UE-a, and further send a private network address request message to the SMF-a according to the sui or the GUTI of the UE-a, thereby obtaining a private network address allocated by the SMF-a to the UE-a according to the Temporary Identity.
And step 3, the SMF-A returns the private network address to the Server-A.
And 4, if the private network address acquired by the Server-A from the registration request message is consistent with the private network address returned by the SMF-A and the temporary identity acquired from the registration request message is different from the existing temporary identity, broadcasting a first public network address request message carrying the blockchain identity and the private network address of the UE-A in the blockchain A.
In this step, the Server-a compares the private network address obtained from the registration request message with the private network address returned by the SMF-a, and compares the temporary identity obtained from the registration request message with the existing temporary identity, if the private network address obtained from the registration request message is identical to the private network address returned by the SMF-a, and the temporary identity obtained from the registration request message is different from the existing temporary identity, the Server-a signs the first public network address request message carrying the blockchain identifier of the UE-a and the private network address with the private key of the device, and then broadcasts the first public network address request message in the blockchain a.
And step 5, the UPF-A receives the first public network address request message and acquires the block chain identifier and the private network address of the UE-A carried in the first public network address request message.
In this step, after receiving the first public network address request message, the UPF-A verifies the signature of the first public network address request message according to the public key of the Server-A, and if the verification is passed, the block chain identifier and the private network address of the UE-A carried in the first public network address request message are acquired.
And 6, if the UPF-A determines that the UE-A is in the jurisdiction range of the equipment according to the private network address of the UE-A, broadcasting a first public network address response message carrying a public network address and a block chain identifier in the block chain A.
In this step, the UPF-a determines whether the UE-a is in its own jurisdiction range according to the IP address network segment information and the private network address of the UE-a, and if so, may sign the first public network address response message carrying the public network address and the blockchain identifier using its own private key, and then broadcast the first public network address response message in the blockchain a.
It should be noted that the public network address carried in the first public network address response message may be in the form of a public network address pool.
And 7, the Server-A receives the first public network address response message and acquires the public network address carried in the first public network address response message.
In this step, after receiving the first public network address response message sent by the UPF-a, the Server-a verifies the signature of the first public network address response message according to the public key of the UPF-a, and if the verification is passed, the public network address carried in the first public network address response message can be acquired.
And 8, the Server-A establishes and stores the mapping relation among the temporary identity, the private network address and the public network address.
In this step, the Server-A can map the public network address returned by the UPF-A with the temporary identity and the private network address of the UE-A. It should be noted that, if the UPF-a returns the public network address pool, the Server-a may take a public network address from the public network address pool to perform mapping with the temporary identity and the private network address of the UE-a. If the number of the public network addresses is not enough, the mapping relation can also comprise port numbers. The mapping relationships are then stored locally.
And 9, the Server-A signs the mapping relation by using the private key of the block chain of the equipment.
Step 10, Server-A broadcasts the distribution information carrying mapping relation in block chain A.
And step 11, the UPF-A receives the distribution message and obtains the mapping relation between the private network address and the public network address carried in the distribution message, and the mapping relation is stored locally.
In this step, after receiving the distribution message sent by the Server-a, the UPF-a may verify the signature of the distribution message according to the public key of the Server-a's blockchain, and if the verification is passed, may obtain the mapping relationship between the temporary identity, the private network address and the public network address of the UE-a carried in the distribution message, and then store the mapping relationship locally. Subsequently, if the UE-A is called, the call request can be forwarded to the private network address of the UE-A according to the mapping relation.
It can be seen from steps 1-11 that, in the registration method provided in the embodiment of the present invention, the Server-a receives the registration request message broadcasted by the UE-a, acquires the temporary identity and the private network address carried therein, sends the private network address request message carrying the temporary identity to the SMF-a, the SMF-a returns the private network address to the Server-a, if the private network address obtained by the Server-a from the registration request message is consistent with the private network address returned by the SMF-a, and the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasts the first public network address request message carrying the blockchain identity and the private network address of the UE-a in the blockchain a, and the UPF-a receives the first public network address request message and acquires the blockchain identity and the private network address of the UE-a carried therein, if the UPF-A determines that the UE-A is in the jurisdiction range of the equipment according to the private network address of the UE-A, a first public network address response message carrying a public network address and a block chain identifier is broadcasted in a block chain A, the Server-A receives the first public network address response message and obtains the public network address carried in the first public network address response message, a mapping relation among a temporary identity identifier, the private network address and the public network address is established and stored, a distribution message carrying the mapping relation is broadcasted in the block chain A by using a block chain private key signature of the equipment, the UPF-A receives the distribution message and obtains the mapping relation between the private network address and the public network address carried in the distribution message, and the mapping relation is locally stored. The registration method provided by the embodiment of the invention can register the temporary identity for the card-free UE and establish the mapping relation among the temporary identity mark, the private network address and the public network address, so that the temporary identity registration server and the user plane functional entity both record the mapping relation, thereby enabling the card-free UE to be addressed when being called, improving the communication convenience degree of the card-free UE and promoting the development of the card-free UE.
In some embodiments, as shown in fig. 1b, after step 10, the registration method provided in the embodiment of the present invention may further include the following steps:
and step 11', when receiving the distribution message broadcast by the Server-A, the accounting node queries the block chain A ledger according to the block chain identification of the Server-A to obtain the block chain public key of the Server-A.
And step 12', the accounting node verifies the signature of the distribution message according to the public key of the blockchain of the Server-A, if the signature passes the verification, the mapping relation among the temporary identity, the private network address and the public network address carried in the distribution message is obtained, and the mapping relation is recorded into the ledger of the blockchain A.
In this step, if the accounting node verifies that the signature of the distributed message is successful, the mapping relationship between the temporary identity, the private network address and the public network address carried in the accounting node is obtained, and then the mapping relationship is recorded into a new block and further recorded into a block chain account book, so that other network element devices can conveniently inquire the public network address in the block chain a account book according to the temporary identity or the terminal identity.
Through the steps 11 '-12', when receiving the distribution message broadcasted by the Server-a, the accounting node queries the block chain a ledger according to the block chain identifier of the Server-a to obtain the block chain public key of the Server-a, verifies the signature of the distribution message according to the block chain public key of the Server-a, and if the verification is passed, acquires the mapping relation among the temporary identity identifier, the private network address and the public network address carried in the distribution message, and records the mapping relation into the block chain a ledger. The registration method provided by the embodiment of the invention can enable the accounting node to record the mapping relation into the block chain account book, so that other subsequent network element equipment can conveniently inquire the address in the block chain account book according to the temporary identity of the cardless UE, the communication convenience degree of the cardless UE is improved, and the development of the cardless UE is promoted.
In some embodiments, after step 1, the registration method may further include the steps of: if the temporary identity acquired by the Server-A from the registration request message is different from the existing temporary identity, broadcasting a registration success message carrying the temporary identity in the block chain A.
In this step, the Server-a may query the account book of the block chain a, determine whether the temporary identity in the registration request message is the same as the existing temporary identity, sign the registration success message carrying the temporary identity using its own private key if the temporary identity is different from the existing temporary identity, and then broadcast the registration success message in the block chain a.
In some embodiments, after step 3, the registration method may further include the steps of: if the Server-A judges that the private network address obtained from the registration request message is consistent with the private network address obtained from the SMF-A, establishing a corresponding relation between the temporary identity and the private network address and sending the corresponding relation to other temporary identity registration servers.
In this step, if the public network address allocated by the SMF-a for the UE-a is consistent with the public network address in the registration request message, the Server-a may establish a correspondence between the temporary identity of the UE-a and the public network address, and send the correspondence to another temporary identity registration Server in the block chain a.
It should be noted that the whole 5G network may have a blockchain network of multiple operators, and each blockchain network may have one or more temporary identity registration servers, that is, the whole 5G network may have multiple servers, and the servers are connected by a star topology network, and the servers may synchronize the corresponding relationship between the temporary identity and the private network address of the 5G card-less terminal in real time.
In some embodiments, after the Server-a broadcasts the registration success message in the blockchain a, the registration method may further include the steps of: and the accounting node receives the registration success message sent by the Server-A, acquires the temporary identity carried in the registration success message, and records the registration success mark and the temporary identity into the block chain A account book.
In this step, after receiving the registration success message sent by the Server-a, the accounting node verifies the signature of the registration success message according to the public key of the Server-a, if the verification is successful, the temporary identity carried in the registration success message is obtained, and then the registration success flag and the temporary identity are recorded into a new block and further into the block chain a ledger.
As shown in fig. 2, an embodiment of the present invention further provides a call addressing method, which may include the following steps in a stage that a cardless UE (i.e., UE-a) is called by UE-B:
in step 21, the SMF-B receives a call request.
In this step, when UE-B in block chain B calls UE-a in block chain a, the call request is first forwarded to SMF-B in block chain B.
Step 22, if the SMF-B determines that the called number carried in the call request is a non-standard number, broadcasting a second public network address request message carrying the called number in the block chain B, where the called number is a temporary identity of the called terminal.
In this step, the called number is carried in the call request, and when the SMF-B recognizes that the called number is the temporary identity, which indicates that the called terminal is the card-less UE, the SMF-B initiates a request in the block chain B to request the public network address corresponding to the temporary identity. Specifically, the SMF-B signs the second public network address request message carrying the temporary identity of the UE-a using its own private key, and then broadcasts the second public network address request message in the block chain B.
And step 23, the Server-B receives the second public network address request message broadcasted by the SMF-B and acquires the temporary identity carried in the second public network address request message.
In this step, after receiving the second public network address request message broadcasted by the SMF-B, the Server-B in the blockchain B first queries the account book of the blockchain B according to the blockchain identifier of the SMF-B to obtain the public key of the SMF-B, then verifies the private key signature of the second public network address request message using the public key of the SMF-B, and if the verification is passed, obtains the temporary identity of the UE-a carried in the second public network address request message.
The embodiment of the invention ensures the authenticity of the identity of each communication node and ensures the safety and reliability of communication by utilizing the traceable characteristic of the block chain account book and the safety mechanism of the identity verification of the public and private keys of the block chain.
And 24, if the Server-B does not obtain the corresponding public network address locally according to the temporary identity, broadcasting a third public network address request message carrying the temporary identity in the block chain B.
In some embodiments, the Server-B locally queries the first blockchain ledger according to the temporary identity to obtain a public network address corresponding to the temporary identity. Specifically, the Server-B may query the public network address of the UE-a in the book of the blockchain B according to the temporary identity of the UE-a, if the public network address corresponding to the temporary identity is not obtained through query, which indicates that the UE-a does not belong to the operator B to which the UE-B belongs, the Server-B signs a third public network address request message carrying the temporary identity of the UE-a using its own private key, and then broadcasts the third public network address request message in the blockchain B.
And step 25, the node C receives the third public network address request message broadcasted by the Server-B and acquires the temporary identity in the third public network address request message.
In this step, since node C is a common node of the blockchain a and the blockchain B, node C may receive the third public network address request message broadcast by the Server-B. After receiving the third public network address request message broadcast by the Server-B, the node C queries the account book of the block chain B according to the block chain identification of the Server-B to obtain the public key of the Server-B, and verifies the private key signature of the third public network address request message by using the public key of the Server-B. And if the verification is passed, the node C acquires the temporary identity in the third public network address request message.
Step 26, the node C broadcasts a fourth public network address request message carrying the temporary identity in the blockchain a.
In step, since node C is a common node in blockchain B and blockchain a, node C has a public-private key pair in blockchain B and blockchain a, respectively. And the node C signs a fourth public network address request message carrying the temporary identity of the UE-A by using a private key of the node C in the block chain A, and then broadcasts the fourth public network address request message in the block chain A.
And 27, the Server-A receives the fourth public network address request message broadcast by the node C and acquires the temporary identity carried in the fourth public network address request message.
In this step, after receiving the fourth public network address request message broadcast by the node C, the Server-a in the blockchain a queries the account book of the blockchain a according to the blockchain identifier of the node C to obtain the public key of the node C in the blockchain a, verifies the private key signature of the fourth public network address request message by using the public key of the node C in the blockchain a, and if the verification is passed, the Server-a obtains the temporary identity identifier in the fourth public network address request message.
And step 28, the Server-A queries the account book of the block chain A according to the temporary identity to obtain the public network address corresponding to the temporary identity.
In this step, if the UE-a successfully registers the temporary identity at the Server-a, the account book of the local blockchain a of the Server-a records the mapping relationship between the temporary identity, the private network address and the public network address of the UE-a. The Server-A can inquire the account book of the block chain A according to the temporary identity of the UE-A to obtain the public network address of the UE-A.
Step 29, Server-A broadcasts the second public network address response message carrying the public network address in the block chain A.
In this step, after the Server-A queries and obtains the public network address of the UE-A, the Server-A signs a second public network address response message carrying the public network address of the UE-A by using a private key of the Server-A, and then broadcasts the second public network address response message in the block chain A.
And step 30, the node D receives the second public network address response message broadcasted by the Server-A and acquires the public network address therein.
In this step, node D may receive the second public network address response message broadcast by Server-a, since node D is a common node in both blockchain a and blockchain B. After receiving the second public network address response message broadcast by the Server-A, the node D queries the account book of the block chain A according to the block chain identifier of the Server-A to obtain a public key of the Server-A to verify the private key signature of the second public network address response message, and if the verification is passed, the node D obtains the public network address in the second public network address response message.
Step 31, the node D broadcasts a third public network address response message carrying the public network address in the block chain B.
In this step, node D has its own public-private key pair in blockchain a and blockchain B, respectively, since node D is a common node in blockchain a and blockchain B. And the node D signs a third public network address response message carrying the public network address of the UE-A by using a private key of the node D in the block chain B, and then broadcasts the third public network address response message in the block chain B.
And step 32, the SMF-B receives the third public network address response message broadcasted by the node D, acquires the public network address in the third public network address response message, and forwards the call request to the UPF-A according to the public network address.
In this step, after receiving the third public network address response message broadcast by the node D, the SMF-B in the blockchain B queries the account book of the blockchain B according to the blockchain identifier of the node D to obtain the public key of the node D in the blockchain B, verifies the private key signature of the third public network address response message using the public key of the node D in the blockchain B, and if the verification is passed, obtains the public network address in the third public network address response message and initiates a call to the public network address.
And step 33, the UPF-A acquires the public network address carried in the call request after receiving the call request, and inquires the mapping relation between the private network address and the public network address of the UE-A stored locally to obtain the private network address of the UE-A.
In this step, if the UE-A successfully registers the temporary identity at the Server-A, the UPF-A locally stores the mapping relationship between the private network address and the public network address of the UE-A. The Server-A can inquire the mapping relation according to the public network address of the UE-A to obtain the private network address of the UE-A.
Step 34, the UPF-A forwards the call request to the private network address of the UE-A.
In this step, the UPF-A forwards the call request to the private network address of the UE-A, so as to complete the addressing process of the UE-B calling the UE-A.
As can be seen from the foregoing steps 21-34, in the call addressing method provided in this embodiment of the present invention, the SMF-B receives the call request, if it is determined that the called number, i.e., the temporary identifier in the call request is a non-standard number, broadcasts a second public network address request message carrying the called number in the blockchain B, the Server-B receives the message and obtains the temporary identifier therein, if the public network address is not locally obtained according to the temporary identifier, broadcasts a third public network address request message carrying the temporary identifier in the blockchain B, the Server-a receiving node C obtains the temporary identifier therein after the fourth public network address request message broadcast in the blockchain a and queries the blockchain a ledger according to the temporary identifier to obtain the public network address, broadcasts a second public network address response message carrying the public network address in the blockchain a, and the node D acquires the public network address after receiving the message and broadcasts a third public network address response message carrying the public network address in the block chain B, the SMF-B acquires the public network address after receiving the message and forwards a call request to the UPF-A according to the public network address, the UPF-A acquires the public network address carried in the message after receiving the call request, inquires the mapping relation between the locally stored private network address of the UE-A and the public network address to obtain the private network address of the UE-A, and the UPF-A forwards the call request to the private network address of the UE-A. The registration method provided by the embodiment of the invention can enable the block chain A account book and the UPF-A to locally record the mapping relation among the temporary identity, the public network address and the private network address of the UE-A, thereby providing the addressable capability for the card-free UE when being called under the condition that the identity of the card-free UE is self-defined, improving the communication convenience degree of the card-free UE and promoting the development of the card-free UE.
Based on the same inventive concept, an embodiment of the present invention further provides a temporary identity registration server, as shown in fig. 3, which may include a receiving module 101, an obtaining module 102, a sending module 103, a judging module 104, a broadcasting module 105, a processing module 106, and an encrypting module 107.
The receiving module 101 is configured to receive a registration request message broadcasted by a cardless terminal, receive a private network address returned by the first SMF, and receive a first public network address response message broadcasted by the first user plane function entity UPF.
The obtaining module 102 is configured to obtain the temporary identity and the private network address carried in the registration request message, and obtain the public network address carried in the first public network address response message.
The sending module 103 is configured to send a private network address request message carrying the temporary identity to the first session management function entity SMF.
The determining module 104 is configured to determine whether the private network address obtained from the registration request message is consistent with the private network address returned by the first SMF, and whether the temporary identity obtained from the registration request message is different from an existing temporary identity.
The broadcasting module 105 is configured to broadcast a first public network address request message carrying a blockchain identifier and a private network address of the cardless terminal in the first blockchain, and broadcast a distribution message carrying a mapping relationship in the first blockchain.
The processing module 106 is configured to establish and store a mapping relationship between the temporary identity, the private network address, and the public network address.
The encryption module 107 is configured to sign the mapping relationship using the blockchain private key of the present apparatus.
In some embodiments, the broadcasting module 105 is further configured to broadcast a registration success message carrying the temporary identity in the first blockchain if the temporary identity obtained from the registration request message is different from an existing temporary identity.
The processing module 106 is further configured to establish a correspondence between the temporary identity and the private network address if the private network address obtained from the registration request message is consistent with the private network address obtained from the first SMF.
The sending module 103 is further configured to send the correspondence to another temporary identity registration server.
An embodiment of the present invention further provides a user plane functional entity UPF, as shown in fig. 4, the UPF includes a receiving module 201, an obtaining module 202, a determining module 203, a broadcasting module 204, and a storing module 205.
The receiving module 201 is configured to receive a first public network address request message sent by a first temporary identity registration server, and receive a distribution message broadcast by the first temporary identity registration server.
The obtaining module 202 is configured to obtain a blockchain identifier and a private network address of the card-less terminal carried in the first public network address request message, and obtain a mapping relationship between the private network address and the public network address carried in the distribution message.
The judging module 203 is used for determining whether the card-free terminal is in the jurisdiction range of the device according to the private network address of the card-free terminal.
The broadcasting module 204 is configured to broadcast a first public network address response message carrying a public network address and a blockchain identifier in the first blockchain if it is determined that the card-less terminal is within the jurisdiction range of the device according to the private network address of the card-less terminal.
The storage module 205 is configured to store the mapping locally.
The embodiment of the present invention further provides an accounting node, as shown in fig. 5, the accounting node includes a receiving module 301, a querying module 302, a verifying module 303, an obtaining module 304, and a recording module 305.
The receiving module 301 is configured to receive a distribution message broadcast by the first temporary identity registration server.
The query module 302 is configured to, when receiving a distribution message broadcast by the first temporary identity registration server, query the first blockchain ledger according to the blockchain identifier of the first temporary identity registration server to obtain a public key of the blockchain of the first temporary identity registration server.
The verification module 303 is configured to verify the signature of the distributed message according to the blockchain public key of the first temporary identity registration server.
The obtaining module 304 is configured to obtain, if the verification is passed, a mapping relationship between the temporary identity, the private network address, and the public network address carried in the distribution message.
The recording module 305 is configured to record the mapping relationship into the first blockchain ledger.
In some embodiments, the receiving module 301 is further configured to receive a registration success message sent by the first temporary identity registration server.
The obtaining module 304 is further configured to obtain the temporary identity carried in the registration success message
The recording module 305 is further configured to record the registration success flag and the temporary identity into the first blockchain ledger.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (10)

1. A method of registration, the method further comprising:
receiving a registration request message broadcast by a card-free terminal, and acquiring a temporary identity and a private network address carried in the registration request message;
sending a private network address request message carrying the temporary identity to a first session management function entity (SMF), and receiving a private network address returned by the first SMF;
if the private network address obtained from the registration request message is consistent with the private network address returned by the first SMF, and the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasting a first public network address request message carrying the blockchain identity and the private network address of the card-free terminal in a first blockchain;
receiving a first public network address response message broadcasted by a first user plane functional entity (UPF), and acquiring a public network address carried in the first public network address response message;
establishing and storing a mapping relation among the temporary identity, the private network address and the public network address;
signing the mapping relation by using a block chain private key of the equipment;
and broadcasting the distribution message carrying the mapping relation in the first block chain.
2. The method of claim 1, wherein after obtaining the temporary identity and the private network address in the registration request, the method further comprises:
if the temporary identity obtained from the registration request message is different from the existing temporary identity, broadcasting a registration success message carrying the temporary identity in a first block chain;
after the receiving the private network address returned by the first SMF, the method further comprises:
and if the private network address acquired from the registration request message is consistent with the private network address acquired from the first SMF, establishing a corresponding relation between the temporary identity and the private network address and sending the corresponding relation to other temporary identity registration servers.
3. A method of registration, the method comprising:
receiving a first public network address request message sent by a first temporary identity registration server, and acquiring a block chain identifier and a private network address of a card-free terminal carried in the first public network address request message;
if the card-free terminal is determined to be in the jurisdiction range of the equipment according to the private network address of the card-free terminal, broadcasting a first public network address response message carrying a public network address and the block chain identifier in a first block chain;
and receiving a distribution message broadcast by the first temporary identity registration server, acquiring a mapping relation between a private network address and a public network address carried in the distribution message, and locally storing the mapping relation.
4. A method of registration, the method comprising:
when receiving a distribution message broadcast by a first temporary identity registration server, inquiring a first block chain account book according to a block chain identifier of the first temporary identity registration server to obtain a public key of a block chain of the first temporary identity registration server;
and verifying the signature of the distribution message according to the blockchain public key of the first temporary identity registration server, if the signature passes the verification, acquiring a mapping relation among a temporary identity, a private network address and a public network address carried in the distribution message, and recording the mapping relation into a first blockchain account book.
5. The method of claim 4, further comprising:
receiving a registration success message sent by a first temporary identity registration server, and acquiring a temporary identity carried in the registration success message;
recording a registration success flag and the temporary identity into the first blockchain ledger.
6. A temporary identity registration server is characterized in that the server comprises a receiving module, an obtaining module, a sending module, a judging module, a broadcasting module, a processing module and an encrypting module;
the receiving module is used for receiving a registration request message broadcasted by the cardless terminal, receiving a private network address returned by the first SMF, and receiving a first public network address response message broadcasted by the first user plane functional entity UPF;
the acquisition module is used for acquiring the temporary identity and the private network address carried in the registration request message and acquiring the public network address carried in the first public network address response message;
the sending module is used for sending a private network address request message carrying the temporary identity to a first session management function entity (SMF);
the judging module is used for judging whether the private network address acquired from the registration request message is consistent with the private network address returned by the first SMF and whether the temporary identity acquired from the registration request message is different from the existing temporary identity;
the broadcast module is used for broadcasting a first public network address request message carrying the blockchain identifier and the private network address of the card-free terminal in a first blockchain and broadcasting a distribution message carrying the mapping relation in the first blockchain;
the processing module is used for establishing and storing the mapping relation among the temporary identity, the private network address and the public network address;
and the encryption module is used for signing the mapping relation by utilizing a block chain private key of the equipment.
7. The server according to claim 6, wherein the broadcasting module is further configured to broadcast a registration success message carrying the temporary identity in the first blockchain if the temporary identity obtained from the registration request message is different from an existing temporary identity;
the processing module is further configured to establish a correspondence between the temporary identity and the private network address if the private network address obtained from the registration request message is consistent with the private network address obtained from the first SMF;
the sending module is further configured to send the correspondence to another temporary identity registration server.
8. A user plane functional entity UPF is characterized in that the UPF comprises a receiving module, an obtaining module, a judging module, a broadcasting module and a storage module;
the receiving module is used for receiving a first public network address request message sent by a first temporary identity registration server and receiving a distribution message broadcasted by the first temporary identity registration server;
the acquisition module is used for acquiring the blockchain identifier and the private network address of the card-free terminal carried in the first public network address request message and acquiring the mapping relation between the private network address and the public network address carried in the distribution message;
the judging module is used for determining whether the card-free terminal is in the jurisdiction range of the equipment according to the private network address of the card-free terminal;
the broadcast module is used for broadcasting a first public network address response message carrying a public network address and the blockchain identifier in a first blockchain if the card-free terminal is determined to be in the jurisdiction range of the equipment according to the private network address of the card-free terminal;
the storage module is used for locally storing the mapping relation.
9. The accounting node is characterized by comprising a receiving module, an inquiring module, a verifying module, an obtaining module and a recording module;
the receiving module is used for receiving a distribution message broadcast by a first temporary identity registration server;
the query module is used for querying a first block chain account book according to a block chain identifier of a first temporary identity registration server to obtain a public key of a block chain of the first temporary identity registration server when receiving a distribution message broadcast by the first temporary identity registration server;
the verification module is used for verifying the signature of the distribution message according to the block chain public key of the first temporary identity registration server;
the obtaining module is used for obtaining the mapping relation among the temporary identity, the private network address and the public network address carried in the distribution message if the verification is passed;
the recording module is used for recording the mapping relation into a first block chain account book.
10. The accounting node of claim 9, wherein the receiving module is further configured to receive a registration success message sent by the first temporary identity registration server;
the obtaining module is further configured to obtain a temporary identity carried in the registration success message;
the recording module is further configured to record a registration success flag and the temporary identity into the first blockchain ledger.
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