CN114302450A - Communication method and communication system - Google Patents

Abstract

The present invention provides a communication method, which relates to the field of communication and is implemented based on a blockchain, the blockchain includes a plurality of network nodes; when a terminal accesses a first network node through at least one second network node in a non-3GPP manner, the The method includes: a first network node broadcasts a first transaction to the block chain, where the first transaction includes: a target quality of service parameter corresponding to a target data link; each second network node responds to the first transaction, respectively generating a second transaction, and the first transaction comprises: The second transaction includes: the target QoS parameter corresponding to the target data link, wherein the network corresponding to the second network node is the network carrying the target data link; each second network node broadcasts the second transaction signed by itself to the district block chain; each second network node transmits the data packet on the target data link with the target quality of service parameter based on the second transaction signed by the first network node. The present invention also provides a communication system.

Description

Communication method and communication system

technical field

The present invention relates to the field of communication technologies, and in particular, to a communication method and a communication system.

Background technique

Under the 5G network, the terminal is allowed to access the 5G core network (5G Core Network, 5GC for short) through a non-3GPP method, that is, not through a radio access network defined by 3GPP. To this end, 3GPP defines a functional entity N3IWF (Non-3GPP Inter-Working Function, non-3GPP interworking function entity) dedicated to this access mode. The user terminal first establishes a tunnel connection with the N3IWF through any network, and then connects with the N3IWF. The protocol data exchanged by the 5GC is encapsulated in the tunnel and sent to the N3IWF. The N3IWF decapsulates the tunnel and forwards the protocol data from the terminal to the 5GC, thereby completing the interaction between the terminal and the 5GC and enabling the terminal to access the 5GC. At the same time, under the 5G network, 5GC provides a quality of service (Quality of Service, QoS) guarantee function for end users, that is, the user terminal can request the required QoS parameters from the 5GC after accessing the 5GC. However, since the tunnel connection between the user terminal and the N3IWF is completed outside the 5GC, the QoS of this connection cannot be guaranteed. This results in that after the user terminal obtains the QoS parameters from the 5GC, before the data packet leaves the 5GC, the data transmission link can obtain the quality of service guarantee, and when the data is transmitted in the tunnel between the terminal and the N3IWF, the 5GC provides QoS quality assurance cannot continue. This obviously degrades the user's business experience.

In the related art, in order to ensure the continuation of QoS, the interface address of the access network used by the terminal to establish a tunnel connection with the N3IWF is pre-stored in the 5GC, and the 5GC transmits the QoS parameters to the access network through the stored interface address to ensure that the Communication quality of tunnels between terminals outside 5GC and N3IWF. However, in this QoS guarantee method in the prior art, since the terminal can establish a connection with the N3IWF based on the task network, the interface addresses of all the access networks that the terminal may use cannot be pre-stored in the 5GC, and thus cannot be used. Ensure that the terminal can successfully obtain the QoS parameters provided by 5GC; in addition, the terminal access to the N3IWF may go through multiple segments of the network, and these multiple segments of the network may be cross-operator. , the QoS guarantee method in the prior art cannot realize the transmission of QoS parameters across operators. The existing technology cannot ensure that the data transmission of the terminal outside the 5GC is guaranteed by the same QoS as that of the 5GC, so that the user experience is lower.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a communication method and communication system to solve the problem in the prior art that when a terminal accesses the 5GC in a non-3GPP manner, in the 5GC In addition to the technical problem that the QoS of data transmission cannot be guaranteed.

In a first aspect, the present invention provides a communication method, which is implemented based on a blockchain, and the blockchain includes multiple network nodes; when a terminal accesses the first network node through at least one second network node in a non-3GPP manner, The communication method includes:

The first network node broadcasts a first transaction to the blockchain, where the first transaction includes: a target quality of service parameter corresponding to the target data link;

Each of the second network nodes respectively generates a second transaction in response to the first transaction, and the second transaction includes: a target quality of service parameter corresponding to the target data link, wherein the second network node corresponds to The network is the network carrying the target data link;

Each of the second network nodes broadcasts the second transaction signed by itself to the blockchain;

Each of the second network nodes transmits the data packets on the target data link with the target quality of service parameter based on the second transaction signed by the first network node.

In some embodiments, after each of the second network nodes broadcasts the self-signed second transaction to the blockchain, and after each of the second network nodes is based on the first network The second transaction signed by the node, before transmitting the data packet on the target data link with the target QoS parameter, further includes:

The first network node performs signature verification on each of the second transactions signed by the second network node;

If the signature verification is passed, the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain;

Each of the second network nodes transmits the data packets on the target data link with the target quality of service parameter based on the second transaction signed by the first network node, including:

Each of the second network nodes verifies the signature of the first network node;

If the signature verification is passed, the data packet on the target data link is transmitted with the target QoS parameter.

In some embodiments, the first transaction further includes: the amount of exchangeable resources of the first network node; the second transaction further includes: the amount of requested resources of the second network node;

Before the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain, the method further includes:

The first network node calculates the sum of the requested resources of the second network node included in all the second transactions to obtain the amount of resources to be paid;

The first network node adds its own signature to the current second transaction and broadcasts it to the blockchain, including:

When the first network node determines that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain .

In some embodiments, the first transaction further includes: an identification of the target data link;

Before each of the second network nodes respectively generates a second transaction in response to the first transaction, the method further includes:

All network nodes in the blockchain except the first network node determine, according to the identifier of the target data link, whether a data packet corresponding to the target data link is transmitted in its corresponding network.

In some embodiments, the identification of the target data link includes one or more of a security parameter index value, a security protocol type, and a network address.

In some embodiments, the security protocol type includes: using only the authentication header protocol, only using the encapsulating security payload protocol, or using both the authentication header protocol and the encapsulating security payload protocol.

In some embodiments, the target quality of service parameters include one or more of bandwidth, delay, jitter, packet loss rate, and burst tolerance.

In a second aspect, the present invention provides a communication system, which is implemented based on a blockchain, where the blockchain includes multiple network nodes, and the multiple network nodes include: a first network node and a second network node , wherein the terminal accesses the first network node in a non-3GPP manner through at least one second network node;

The first network node is configured to broadcast a first transaction to the blockchain, where the first transaction includes: a target quality of service parameter corresponding to the target data link;

Each of the second network nodes is configured to respectively generate a second transaction in response to the first transaction, where the second transaction includes: a target quality of service parameter corresponding to the target data link, wherein the second network The network corresponding to the node is the network carrying the target data link; and

Each second network node is further configured to broadcast the second transaction signed by itself to the blockchain, and transmit the target quality of service parameter based on the second transaction signed by the first network node. The packet on the destination data link.

In some embodiments, the first network node is further configured to broadcast the second transaction signed by each of the second network nodes to the blockchain, and after each of the second network nodes broadcast the self-signed second transaction to the blockchain Based on the second transaction signed by the first network node, the second network node performs the processing on each of the second transactions signed by the second network node before transmitting the data packet on the target data link with the target quality of service parameter. Signature verification, and after the signature verification is passed, add its own signature to the current second transaction and broadcast it to the blockchain;

Each of the second network nodes is further configured to verify the signature of the first network node, and after the signature verification is passed, transmit the data packets on the target data link with the target quality of service parameter.

In some embodiments, the first transaction further includes: the amount of exchangeable resources of the first network node; the second transaction further includes: the amount of requested resources of the second network node;

The first network node is further configured to calculate the current second transaction included in all the second transactions before the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain. The sum of the amount of resources requested by the second network node to obtain the amount of resources to be paid; and also used for

When it is determined that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, a self-signature is added to the current second transaction and broadcast to the blockchain.

Beneficial technical effects of the present invention:

In the communication method and communication system provided by the present invention, the network nodes corresponding to each operator conduct negotiation and confirmation of service quality parameters based on the block chain, so that when the terminal accesses the first network node based on at least one second network node , it is possible to obtain the same quality of service guarantee for data transmission outside the first network node as within the first network node, thereby improving the user's communication experience.

Description of drawings

1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

2 is a flowchart of a communication method provided by an embodiment of the present invention;

3 is a flowchart of another communication method provided by an embodiment of the present invention;

4 is a flowchart of another communication method provided by an embodiment of the present invention;

FIG. 5 is a flowchart of still another communication method provided by an embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the communication method and communication system provided by the present invention are described in detail below with reference to the accompanying drawings.

The communication method provided by the present invention is implemented based on a communication system, as shown in FIG. 1 (FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present invention), the communication system is constructed based on a blockchain, and the blockchain It includes a plurality of network nodes, and the plurality of network nodes includes at least one second network node 22 and one first network node 11 , wherein each network node represents a network function entity of a different operator. Preferably, in this embodiment of the present invention, the first network node corresponds to a functional entity of an operator's 5G network, such as N3IWF.

The communication method provided by the present invention is used to ensure that the data transmission of the terminal in the first network node and each second network node obtains the same service when the terminal accesses the first network node through at least one second network node in a non-3GPP manner quality assurance.

It should be noted that, in this embodiment of the present invention, when the terminal accesses the first network node through multiple second network nodes in a non-3GPP manner, the multiple second network nodes are in a tandem relationship, that is, the terminal sequentially passes through each The second network node is connected to the first network node. For example, the terminal is connected to the WIFI of a hotel, and the hotel's WIFI is connected to the China Telecom IP backbone network, and then the terminal is connected to China Unicom's 5G network through the China Telecom IP backbone network At this time, the functional entity corresponding to "Hotel WIFI" and the functional entity corresponding to "China Telecom IP Backbone Network" belong to the "second network node", and the two belong to a tandem relationship; however, in some embodiments , when the terminal is not satisfied with the bandwidth obtained from the transmission link formed by a second network node when accessing the 5G network, it can also access the 5G network based on multiple transmission links at the same time, wherein each transmission link At least one second network node is included, and the terminal accesses different N3IWFs of the 5G network based on different transmission links, and the terminal determines the quality of service process based on each transmission link independently, and does not interfere with each other.

FIG. 2 is a flowchart of a communication method provided by an embodiment of the present invention.

2, the communication method provided by the present invention includes:

Step S101, the first network node broadcasts a first transaction to the blockchain, where the first transaction includes: target quality of service parameters corresponding to the target data link.

When the terminal accesses the first network node through at least one second network node, the terminal first establishes a communication tunnel through the second network node and the N3IWF corresponding to the first network node, and then the terminal sends the data packet through the communication tunnel to the N3IWF, and then the N3IWF sends the data packet to the first network node.

The target data link in the present invention refers to the data link corresponding to the data transmission process between the terminal and the N3IWF corresponding to the first network node. The network corresponding to the second network node is a network bearing the target data link, that is, the data transmitted by the target data link is transmitted based on the network corresponding to the second network node.

In step S101, after determining that the terminal has accessed itself, the first network node initiates a transaction with each second network node in the blockchain, so that each second network node determines the target based on the transaction. Quality of service assurance parameters for the data link. Specifically, the first network node broadcasts a first transaction to the blockchain, where the first transaction includes: a target quality of service parameter corresponding to the target data link, and the physical meaning of the target quality of service parameter is that the first network node will serve the target service The quality parameter provides service quality assurance for the transmission of data packets related to the target data link in the network corresponding to the first network node.

In this embodiment of the present invention, the target quality of service parameter includes one or more of bandwidth, delay, jitter, packet loss rate, and burst tolerance.

Step S102, each second network node generates a second transaction in response to the first transaction, and the second transaction includes: a target quality of service parameter corresponding to the target data link.

After each second network node receives the first transaction, it determines whether it can use the target service quality parameter included in the first transaction as the target data link to provide service quality assurance based on its own network resources, and if so, generates a second network node. Second transaction, the second transaction includes the target quality of service parameter corresponding to the target data link; if not, the second network node can feed back information of rejecting the transaction to the first network node.

Step S103, each second network node broadcasts the second transaction signed by itself to the blockchain.

After generating the second transaction, each second network node adds its own signature to the corresponding second transaction, and broadcasts it to the blockchain. Adding a signature to the second transaction by the second network node indicates that the second network node agrees to perform this transaction.

This embodiment of the present invention does not limit the manner in which the second network node signs the second transaction. For example, the second network node may use its own private key to add a signature to the second transaction, or the second network node may also use a preset algorithm based on A key is generated (eg, a hash value is generated using a hash algorithm), and the second transaction is signed using the generated key.

Step S104, each second network node transmits the data packet on the target data link with the target service quality parameter based on the second transaction signed by the first network node.

After receiving the second transaction sent by each second network node, the first network node adds its own signature to each second transaction, and broadcasts each signed second transaction to the blockchain. Signing the second transaction by the first network node indicates that the first network node agrees to this transaction.

Each second network node receives the second transaction signed by the first network node, and detects that the first network node has signed and agreed to this transaction, and then it can be determined that this transaction has been reached, that is, it is determined that the target service will be provided. The quality parameter conveys the packets on the destination data link.

In the communication method provided by the embodiment of the present invention, the network nodes corresponding to each operator conduct negotiation and confirmation of quality of service parameters based on the blockchain, so that when the terminal accesses the first network node based on at least one second network node, It is possible to obtain the same quality of service guarantee for data transmission outside the first network node as inside the first network node, thereby improving the communication experience of the user.

FIG. 3 is a flowchart of another communication method provided by an embodiment of the present invention.

Referring to FIG. 3 , this embodiment includes steps S101 to S104 of the embodiment shown in FIG. 2 . On this basis, between steps S103 and S104 , this embodiment further includes:

Step S105, the first network node performs signature verification on each of the second transactions signed by the second network node.

In order to prevent an illegal third party from impersonating the second network node to participate in the communication process, the first network node verifies the signature of the second network node, for example, using the pre-stored public key of the second network node to verify the signature of the second network node. Verify, or generate a key using a pre-agreed encryption algorithm, and determine whether the signature of the second network node is genuine and valid by comparing whether the newly generated key is the same as the key corresponding to the signature of the second network node.

In step S105, if the signature verification of the first network node to the second network node is passed, it means that the first network node has determined that the second network node agrees with this transaction, and the second transaction is from the real second network node , at this time, step S106 is executed to further add its own signature to the second transaction to advance this transaction; if the signature verification of the second network node by the first network node fails, it means that the second network node may be counterfeit node to end the transaction process.

Step S106, the first network node adds its own signature to the current second transaction, and broadcasts it to the blockchain.

The current second transaction refers to the second transaction after adding the signature of the second network node. The first network node adds its own signature to the current second transaction to indicate that it agrees with this transaction, and will add its own signature to the second transaction. 's second transaction is broadcast to the blockchain.

In this embodiment, step S104 specifically includes:

Step S1041: Each second network node verifies the signature of the first network node.

After receiving the second transaction with the signature of the first network node broadcasted by the first network node, the second network node verifies the signature of the first network node to determine the authenticity of the received identity of the first network node .

Specifically, if the signature verification of the first network node by the second network node is passed, it means that the identity of the first network node is real, and the first network node has confirmed the transaction, and the following step S1042 is executed accordingly: That is, the second network node determines that it transmits the data packet on the target data link with the target quality of service parameter; if the signature verification of the first network node by the second network node fails, it means that the first network node may be a fake node, At this point, the method flow ends.

Step S1042, transmit the data packets on the target data link with the target QoS parameter.

The second network node may set the relevant parameters of the target data link based on the target quality of service parameters corresponding to the target data link included in the second transaction, so that when subsequently transmitting the data packets included in the target data link, The target quality of service parameters are used to ensure the transmission performance of the data packets.

In practical applications, in the process of uniformly negotiating and determining target quality of service parameters between the first network node and each second network node, a final transaction will be reached in the form of payment resources, that is, the first network node will send each second network node to each second network node. The node pays certain resources, so that the second network node transmits the data packets in the target data link according to the target quality of service parameter set by the first network node.

In the above-mentioned embodiment, after the first network node and each second network node negotiate and determine the target service quality parameter, the resource payment is performed offline or according to a pre-established protocol by default.

However, in some embodiments, the first network node and each of the second network nodes may also negotiate and determine the amount of payment resources in the process of determining the target quality of service parameter.

In this embodiment, the first transaction broadcast by the first network node further includes: the amount of exchangeable resources of the first network node, and the second transaction generated by the second network node further includes: the amount of resources requested by the second network node ; wherein, the amount of exchangeable resources of the first network node refers to the amount of resources that the first network node can pay to each second network node; the amount of resources requested by the second network node refers to the amount of resources that the second network node expects from the first network node The amount of resources acquired. Specifically, after receiving the first transaction broadcasted by the first network node, the second network node determines, according to its own network resources and the amount of exchangeable resources of the first network node included in the first transaction, that it is expected to start from the first transaction. The amount of resources obtained at a network node, that is, the amount of requested resources, and the amount of requested resources is written into the second transaction. In some embodiments, preferably, the amount of exchangeable resources of the first network node can be set to 0, that is, it means that the first network node expects that each second network node provides service quality assurance for each second network node according to the target service quality parameter for free, and in In this case, if the second node does not agree to provide service quality assurance for the first node according to the target service quality parameters for free, the first node may regenerate the first transaction, and the first transaction includes the reset amount of exchangeable resources, to conduct transaction negotiation with each second network node again.

Specifically, referring to FIG. 4 (FIG. 4 is a flowchart of another communication method provided by an embodiment of the present invention), in this embodiment, the first network node adds its own signature to the current second transaction and broadcasts it to the zone Before the block chain (step S106), it also includes:

Step S1, the first network node calculates the sum of the requested resources of the second network node included in all the second transactions to obtain the resource to be paid.

Step S2: The first network node determines whether the amount of exchangeable resources is greater than or equal to the amount of resources to be paid.

When the first network node determines that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, it means that the exchangeable resources currently held by the first network node are sufficient to pay each second network node. At this time, the first network node can determine If the transaction is established, correspondingly, the subsequent step S106 is executed; and when the first network node determines that the amount of exchangeable resources is less than the amount of resources to be paid, it means that the exchangeable resources currently held by the first network node are not enough to pay to each second network node. The network node, the transaction cannot be established, and the process of this method ends at this time.

FIG. 5 is a flowchart of still another communication method provided by an embodiment of the present invention.

Referring to Fig. 5, in this embodiment, the communication method not only includes steps S101 to S104 of the embodiment shown in Fig. 2, but also includes step S102', and only step S102' will be described below.

In this embodiment, the first transaction further includes: an identifier of the target data link. Specifically, before step S102, it also includes:

Step S102', all network nodes in the blockchain except the first network node determine whether there is a data packet corresponding to the target data link transmitted in the network corresponding to itself according to the identifier of the target data link.

In the embodiment of the present invention, the blockchain includes numerous nodes, and the numerous nodes include a first network node, a second network node, and other nodes. After the first network node broadcasts the first transaction, all nodes in the blockchain except the first network node. All other network nodes other than the network node determine whether there is a data packet corresponding to the target data link transmitted in their corresponding network according to the identifier of the target data link included in the first transaction. The second network node, at this time, correspondingly executes the subsequent step S102 to generate the second transaction, and if it does not exist, the network node does not perform any operation.

In the embodiment of the present invention, the identifier of the target data link is represented by an IPsec tunnel identifier. Preferably, the identifier of the target data link is represented by an IPsec tunnel identifier triplet, and the IPsec tunnel identifier triplet includes: a security parameter index value (Security Parameter Index, referred to as SPI), security protocol type and network address; where, the security protocol type includes: only use the authentication header protocol (Authentication Header, referred to as AH), only use the encapsulating security payload protocol (Encapsulating Security Payload, referred to as the protocol) ESP) or use AH protocol and ESP protocol at the same time; SPI is a field included in both AH and ESP, and the SPI corresponding to the data packet can be identified from the data packet transmitted on the network; the network address includes one of the source address and destination address of the tunnel , when the target data link represents the data flow from the N3IWF to the terminal, the network address is the source address, and when the target data link represents the data flow from the terminal to the N3IWF, the network address is the destination address. In an embodiment, the first network node may obtain service quality parameters for data links with different data flow directions respectively through different transactions.

In some embodiments, the first transaction is in the form of T{[I _op1 , I _OP ], [C→OP, q→UE(SPI)]}, where [I _op1 , I _OP ] represents the value of the first transaction Input, I _op1 represents the resources of the first network node, I _OP represents the network resources of the network node to be traded, [C→OP, q→UE(spi)] represents the output of the first transaction, where C represents the first network The amount of exchangeable resources that the node can pay to each second network node, C→OP indicates that the first network node pays the exchangeable resource C to the network node (second network node) to be traded; q indicates the target service quality parameter, UE(SPI) is an IPsec tunnel identification triplet, which is used to uniquely identify the target data link. q→UE(SPI) indicates that the first network node will use the target quality of service parameter q as the target data link identified by the UE(SPI). The relevant data packets of the road provide quality of service assurance.

Correspondingly, the form of the second transaction is T _2a {[I _op1 ,I _op2a ],[c _2a →op2a, q→UE(SPI)]}, T _2b {[I _op1 ,I _op2b ],[c _2b → op2b, q→UE(SPI)]}...; It should be noted that the second transaction is essentially the instantiation of the first transaction, that is, the second transaction is generated by each second network node based on the form of the first transaction . Wherein, [I _op1 , I _op2a ] represents the input of the second transaction. Similar to the above, I _op1 represents the resources of the first network node, and I _op2a represents the network resources of the second network node a to be traded; [c _2a → op2a, q→UE(SPI)] represents the output of the second transaction, where c _2a represents the offer of the second network node a, that is, the request resource, and c _2a →op2a represents the second network node a for the first network node. The quotation of the acquired network resource is c _2a ; q represents the target quality of service parameter, and UE (SPI) is an IPsec tunnel identification triplet to uniquely identify the target data link, and q→UE (SPI) represents the second network node a The data packets of the target data link identified by the UE (SPI) will be guaranteed by the target quality of service parameter q. Similarly, in the embodiment of the present invention, the form of the second transaction corresponding to the other second network nodes b, c...n is the same as the form of the second transaction of the second network node a. The information related to the identity of the second network node is different. For example, in the second transaction, the quotation of the second network node a is c _2a , the quotation of the second network node b is c _2b , and so on.

In the present invention, the above-mentioned embodiments can be combined with each other to obtain new technical solutions, and these new technical solutions obtained by combining should also belong to the protection scope of the present invention.

An embodiment of the present invention further provides a communication system. As shown in FIG. 1 , the communication system is implemented based on a blockchain. The blockchain includes multiple network nodes, and the multiple network nodes include: a first network node 11 and a second network node 11 . A network node 22, wherein the terminal accesses the first network node 11 in a non-3GPP manner through at least one second network node 22.

Specifically, the first network node 11 is used to broadcast the first transaction to the blockchain, and the first transaction includes: target quality of service parameters corresponding to the target data link; each second network node 22 is used to respond to the first transaction, respectively A second transaction is generated, where the second transaction includes: target quality of service parameters corresponding to the target data link.

The network corresponding to the second network node is a network bearing the target data link.

Each second network node 22 is also used to broadcast the second transaction signed by itself to the blockchain, and based on the second transaction signed by the first network node, transmit the data on the target data link with the target quality of service parameter Bag.

In some embodiments, the first network node 11 is further configured to broadcast the second transaction signed by itself to the blockchain after each second network node 22, and after each second network node is based on the first network node The signed second transaction, before transmitting the data packet on the target data link with the target service quality parameter, perform signature verification on the second transaction signed by the second network node, and after the signature verification passes, verify the current first transaction. The second transaction adds its own signature and broadcasts it to the blockchain.

Each second network node 22 is further configured to verify the signature of the first network node, and after the signature verification passes, transmit the data packet on the target data link with the target quality of service parameter.

In some embodiments, the first transaction further includes: the amount of exchangeable resources of the first network node; the second transaction further includes: the amount of requested resources of the second network node.

The first network node 11 is also used to calculate the sum of the requested resources of the second network node included in all the second transactions before the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain. , to obtain the amount of resources to be paid; and is also used to add a self-signature to the current second transaction when it is determined that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, and broadcast it to the blockchain.

The communication system provided by the embodiment of the present invention is used to implement the communication method provided by the embodiment of the present invention. For details on the functions of each network node in the communication system provided by the embodiment of the present invention and the interaction between the network nodes, please refer to The descriptions of the corresponding method steps in the foregoing embodiments are not repeated here.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. A communication method, characterized in that it is implemented based on a blockchain, and the blockchain includes multiple network nodes; when a terminal accesses a first network node in a non-3GPP manner through at least one second network node, all The communication method includes: The first network node broadcasts a first transaction to the blockchain, where the first transaction includes: a target quality of service parameter corresponding to the target data link; Each of the second network nodes respectively generates a second transaction in response to the first transaction, and the second transaction includes: a target quality of service parameter corresponding to the target data link, wherein the second network node corresponds to The network is the network carrying the target data link; Each of the second network nodes broadcasts the second transaction signed by itself to the blockchain; Each of the second network nodes transmits the data packets on the target data link with the target quality of service parameter based on the second transaction signed by the first network node. 2. The method according to claim 1, wherein after each of the second network nodes broadcasts the self-signed second transaction to the blockchain, and after each of the second network nodes broadcasts the self-signed second transaction to the blockchain Before the second network node transmits the data packet on the target data link with the target quality of service parameter based on the second transaction signed by the first network node, the method further includes: The first network node performs signature verification on each of the second transactions signed by the second network node; If the signature verification is passed, the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain; Each of the second network nodes transmits the data packets on the target data link with the target quality of service parameter based on the second transaction signed by the first network node, including: Each of the second network nodes verifies the signature of the first network node; If the signature verification is passed, the data packet on the target data link is transmitted with the target QoS parameter. 3. The method according to claim 2, wherein the first transaction further comprises: the amount of exchangeable resources of the first network node; the second transaction further comprises: the amount of the second network node's exchangeable resources amount of resources requested; Before the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain, the method further includes: The first network node calculates the sum of the requested resource amounts of the second network nodes included in all the second transactions to obtain the resource amount to be paid; The first network node adds its own signature to the current second transaction and broadcasts it to the blockchain, including: When the first network node determines that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain . 4. The method according to claim 1, wherein the first transaction further comprises: an identifier of the target data link; Before each of the second network nodes respectively generates a second transaction in response to the first transaction, the method further includes: All network nodes in the blockchain except the first network node determine whether a data packet corresponding to the target data link is transmitted in the network corresponding to itself according to the identifier of the target data link. 5 . The method according to claim 4 , wherein the identifier of the target data link comprises: one or more of a security parameter index value, a security protocol type, and a network address. 6 . 6 . The method according to claim 5 , wherein the security protocol type comprises: using only the authentication header protocol, only using the encapsulating security payload protocol, or using both the authentication header protocol and the encapsulating security payload protocol. 7 . 7. The method according to claim 1, wherein the target quality of service parameter comprises one or more of bandwidth, delay, jitter, packet loss rate and burst tolerance. 8. A communication system, characterized in that, the communication system is implemented based on a blockchain, the blockchain comprises a plurality of network nodes, and the plurality of the network nodes comprises: a first network node and a second network node, The terminal accesses the first network node in a non-3GPP manner through at least one second network node; The first network node is configured to broadcast a first transaction to the blockchain, where the first transaction includes: a target quality of service parameter corresponding to the target data link; Each of the second network nodes is configured to respectively generate a second transaction in response to the first transaction, where the second transaction includes: a target quality of service parameter corresponding to the target data link, wherein the second network The network corresponding to the node is the network carrying the target data link; and Each second network node is further configured to broadcast the second transaction signed by itself to the blockchain, and transmit the target service quality parameter based on the second transaction signed by the first network node. The packet on the destination data link. 9. The system of claim 8, wherein: The first network node is further configured to broadcast the second transaction signed by each of the second network nodes to the blockchain, and after each of the second network nodes is based on the signed transaction. For the second transaction signed by the first network node, before transmitting the data packet on the target data link with the target service quality parameter, perform signature verification on each second transaction signed by the second network node, and sign After the verification is passed, add its own signature to the current second transaction and broadcast it to the blockchain; Each of the second network nodes is further configured to verify the signature of the first network node, and after the signature verification is passed, transmit the data packets on the target data link with the target quality of service parameter. 10. The system according to claim 8, wherein the first transaction further comprises: the amount of exchangeable resources of the first network node; the second transaction further comprises: the amount of requested resources of the second network node; The first network node is further configured to calculate the current second transaction included in all the second transactions before the first network node adds its own signature to the current second transaction and broadcasts it to the blockchain. The sum of the amount of resources requested by the second network node to obtain the amount of resources to be paid; and also used for When it is determined that the amount of exchangeable resources is greater than or equal to the amount of resources to be paid, a self-signature is added to the current second transaction and broadcast to the blockchain.

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