CN114401316A - Network element communication method, service request method, device, equipment and storage medium - Google Patents
Network element communication method, service request method, device, equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the application provides a network element communication method, a service request device, equipment and a storage medium, which are applied to a communication network, wherein the communication network comprises a service communication proxy network element which is arranged corresponding to each area; the consumer network element acquires the second network address of each discovered alternative producer network element from the network warehousing function network element and sends a service request to the affiliated regional service communication agent network element; the service communication proxy network element forwards the service request message to at least one alternative producer network element belonging to the area according to each second network address or forwards the service request message to the alternative producer network element by the service communication proxy network elements of other areas, so that the service communication proxy network element can directly or selectively redirect the target producer network element which determines the normal response in a plurality of alternative producer network elements, and the problems in the prior art are solved.
Description
Technical Field
The present application relates to the field of network security technologies, and in particular, to a network element communication method, a service request method, an apparatus, a device, and a storage medium.
Background
Currently, the 3GPP protocol introduces an indirect communication architecture of Model C of the 5G communication network. In a Model C communication architecture, when a consumer Network element of a user needs to request a service from a producer Network element, the producer Network element is discovered through a Network Repository Function (NRF), one of the producer Network elements is selected, and access is performed according to an IP address of the producer Network element.
Except for an exception handling mode for a permanent or temporary redirection response code (such as 307/308 exception state code of http) defined in a 3GPP protocol, a Service Communication Proxy (SCP) network element directly connected to a network element returning the exception response code is explicitly required to be able to directly redirect signaling. That is, when the producer network element returns 307/308 response code, the corresponding SCP will redirect to other producer network elements to try to find a target producer network element that can provide service.
However, in the current abnormal situation at other network element level, for example, an abnormal response code (e.g. 429/500) returned by a producer network element due to insufficient resources, heavy traffic, and the like, redirection of an abnormal scene cannot be realized through an SCP directly connected to the producer network element, and the SCP can only return an abnormal response code generated by the producer network element to a consumer network element in an original route, and then the consumer network element reselects another producer network element to attempt to acquire a service. In a roaming scenario, a consumer network element may need to transmit across regions for many times to find a target producer network element, and a time delay generated in the process may ultimately affect a user service.
Inventing messages
In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a network element communication method, a service request method, a device, an apparatus and a storage medium, which are used for solving the problem of inefficiency caused by limited producer network element abnormal situations which are dealt with by redirection processing of the current service communication proxy network element.
A first aspect of the present application provides a network element communication method, which is applied to a service communication proxy network element set corresponding to each area in a communication network; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the network element communication method comprises the following steps: the service communication agent network element receives a service request message carrying a second network address of each alternative producer network element in the same region; the service request message originates from a consumer network element; the service communication agent network element determines the area of the corresponding alternative producer network element according to the network address field to which at least one second network address belongs; responding that each alternative producer network element and the service communication proxy network element belong to the same area, and forwarding the service request message to at least one alternative producer network element belonging to the area by the service communication proxy network element according to at least one second network address until a target producer network element which normally responds is determined; or, in response to that each candidate producer network element belongs to another area different from the serving communication proxy network element, the serving communication proxy network element routes to the serving communication proxy network element of the other area through a first network address, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element that normally responds is determined; and the service communication agent network element receives the normal response message from the target producer network element and forwards the normal response message to the consumer network element.
In some embodiments, said responding that each candidate producer network element and said serving communication proxy network element belong to the same area, and said serving communication proxy network element forwards said service request message to at least one candidate producer network element belonging to the same area according to at least one said second network address until a target producer network element that responds normally is determined, includes: the service communication agent network element executes a preset flow according to the service request message: the service communication agent network element selects a first address from each second network address in the service request message, and sends the service request message to a first alternative producer network element corresponding to the first address; the service communication agent network element receives the response message of the first alternative producer network element and determines the response message as a normal response message or an abnormal response message; if the response message is a normal response message, the first alternative producer network element is the target producer network element; if the response message is an abnormal response message, the service communication agent network element selects a second address from each second network address in the service request message, and redirects to send the service request message to a second alternative producer network element corresponding to the second address; the service communication agent network element receives the response message of the second alternative producer network element and determines the response message as a normal response message or an abnormal response message; and if the response message is a normal response message, the first alternative producer network element is the target producer network element.
In some embodiments, said responding that each candidate producer network element belongs to another area different from the serving communication proxy network element, the serving communication proxy network element routing to the serving communication proxy network element of the other area through a first network address, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element of a normal response is determined, includes: the service communication proxy network element accesses the service communication proxy network element of the other area according to the first network address associated with the other area so as to forward the service request message; and the service communication agent network elements in other areas execute the preset flow according to the service request message until a target producer network element which normally responds is determined.
In some embodiments, the exception response message includes an exception response code associated with a network element error or heavy traffic.
In some embodiments, the communication network is a 5G mobile communication network, and the second network address of each alternative producer network element is included in a header of the service request message.
A second aspect of the present application provides a service request method, which is applied to a communication network in which a consumer network element requests a producer network element for a service; the communication network comprises a service communication agent network element and a network warehousing function network element which are arranged corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the service request method comprises the following steps: the consumer network element sends a service discovery request message to the network warehousing function network element of the area to which the consumer network element belongs so as to acquire a second network address of each alternative producer network element returned corresponding to the service discovery request message;
the consumer network element sends a service request message carrying each second network address to a corresponding service communication proxy network element so as to determine the area to which each alternative producer network element belongs and determine the corresponding service communication proxy network element according to the network address segment to which each second network address belongs, so that the service request message is forwarded to at least one alternative producer network element by the determined service communication proxy network element, and a target producer network element with normal response is determined; and the consumer network element receives a normal response message of the target producer network element corresponding to the service request message from the corresponding service communication agent network element.
In some embodiments, the communication network is a 5G mobile communication network, and the second network address of each alternative producer network element is included in a header of the service request message.
A third aspect of the present application provides a network element communication apparatus, which is applied to a service communication proxy network element set corresponding to each area in a communication network; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the network element communication device comprises: a receiving module, configured to receive a service request message carrying a second network address of each candidate producer network element in the same area; the service request message originates from a consumer network element; the area determining module is used for determining the area of the corresponding candidate producer network element according to the network address field to which the at least one second network address belongs; a forwarding module, configured to forward, in response to that each candidate producer network element and the service communication proxy network element belong to the same area, the service request message to at least one candidate producer network element belonging to the area according to at least one second network address until a target producer network element that normally responds is determined; or, in response to that each candidate producer network element belongs to another area different from the serving communication proxy network element, routing to the serving communication proxy network element of the other area through the first network address of the other area, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element which normally responds is determined; the receiving module is configured to receive a normal response message from a target producer network element, and forward the normal response message to the consumer network element through the forwarding module.
A fourth aspect of the present application provides a service request apparatus, which is applied to a communication network in which a consumer network element requests a producer network element for a service; the communication network comprises a service communication agent network element and a network warehousing function network element which are arranged corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the service request apparatus includes: the service discovery module is used for sending a service discovery request message to the network warehousing function network element of the area to which the consumer network element belongs so as to acquire a second network address of each candidate producer network element returned corresponding to the service discovery request message; the service request module is used for sending a service request message carrying each second network address to a service communication proxy network element corresponding to the consumer network element so as to determine the area to which each alternative producer network element belongs according to the network address segment to which each second network address belongs and determine the corresponding service communication proxy network element, so that the service request message is forwarded to at least one alternative producer network element by the determined service communication proxy network element, and a target producer network element with normal response is determined; and the receiving module is used for receiving a normal response message of the service request message corresponding to the target producer network element from the service communication agent network element corresponding to the consumer network element.
A fifth aspect of the present application provides a network device, comprising: a communicator, a memory, and a processor; the communicator is used for communicating with the outside; the memory is to store program instructions; the processor is configured to execute the program instructions to perform the network element communication method according to any one of the first aspect; or to perform a service request method as defined in any of the second aspects.
A sixth aspect of the present application provides a computer-readable storage medium storing program instructions that are executed to perform the network element communication method according to any one of the first aspects; or to perform a service request method as defined in any of the second aspects.
As described above, embodiments of the present application provide a network element communication method, a service request method, an apparatus, a device, and a storage medium, which are applied to a communication network, where the communication network includes a service communication proxy network element set corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the consumer network element acquires the second network address of each discovered alternative producer network element from the network warehousing function network element and sends a service request to the service communication agent network element in the region to which the consumer network element belongs; responding to that each alternative producer network element and the service communication proxy network element belong to the same area, and forwarding the service request message to at least one alternative producer network element belonging to the area by the service communication proxy network element according to at least one second network address; or, the service communication proxy network element sends the service communication proxy network element in other areas to forward to the alternative producer network element, so that the service communication proxy network element can directly or selectively redirect the target producer network element which determines the normal response in the multiple alternative producer network elements according to the multiple second network addresses carried by the service request, thereby solving the problems in the prior art.
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Fig. 1 shows a schematic structural diagram of an application scenario in an embodiment of the present application.
Fig. 2 shows a flowchart of a network element communication method in an embodiment of the present application.
Fig. 3 shows a schematic flowchart of step S203 in an embodiment of the present application.
Fig. 4 shows a flowchart of a service request method according to an embodiment of the present application.
Fig. 5 shows a schematic diagram of a service communication flow in an embodiment of the present application.
Fig. 6A shows a communication flow diagram of an in-zone scenario in a specific example of the present application.
Fig. 6B shows a communication flow diagram of a roaming scenario in an example of the present application.
Fig. 7 shows a block diagram of a network element communication device in an embodiment of the present application.
Fig. 8 shows a block diagram of a service request device according to an embodiment of the present application.
Fig. 9 shows a schematic circuit structure diagram of a network device in an embodiment of the present application.
Detailed Description
Embodiments of the present application are described below with specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily carry out the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein.
Reference throughout this specification to "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples presented in this application can be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first", "second" are used merely to denote an object and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the expressions of the present application, "plurality" means two or more unless specifically defined otherwise.
In order to clearly explain the present application, components that are not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.
Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. In addition, when a device "includes" a certain component, unless otherwise stated, the device does not exclude other components, but may include other components.
Although the terms first, second, etc. may be used herein to refer to various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface are represented. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, modules, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, modules, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" include plural forms as long as the words do not expressly indicate a contrary meaning. The term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.
Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and currently prompted messages, and should not be excessively interpreted as having ideal or very formulaic meanings unless defined.
The 3GPP protocol introduced the indirect communication architecture of the model c of the 5G communication network in the evolved standard Release 16. In the ModelC architecture, when a consumer network element has a service requiring a producer network element, the consumer network element fills an IP network address of a Target producer network element in a message header '3 gpp-Sbi-Target-apiRoot' of a service request message, sends the IP network address to SCPs, transmits the IP network address to the SCPs connected with the Target producer network element among the SCPs, and forwards the IP network address to the Target producer network element.
Except for defining an exception handling mode of 307/308 exception response codes for an exception redirection scenario in a 3GPP protocol, a direct connection SCP with a target producer network element returning 307/308 exception response codes is definitely required to be capable of directly carrying out redirection. However, in the current protocol, the header of the "3 gpp-Sbi-Target-apiRoot" message only carries the IP network address of one producer network element, and once an abnormal scenario at other network element level occurs, such as insufficient resources and busy traffic (abnormal response codes such as 429/500 may be generated and returned to the SCP), the SCP directly connected to the Target producer network element cannot realize redirection in the abnormal scenario, but after the abnormal response message generated by the Target producer network element is returned to the consumer network element, the consumer network element needs to reselect another Target producer network element to repeat the above-mentioned process of sending the service request message and determining redirection of the Target producer network element until the Target producer network element with normal response is found.
It can be seen that in an abnormal scenario except 307/308, the SCP has no capability of redirecting the target producer network element, and needs to cooperate with the consumer network element that initiates the service request message, resulting in low efficiency. In a roaming scenario (i.e., cross-regional), the consumer network element needs to perform a signaling transmission process corresponding to the target producer network element that determines a normal response for multiple times across regions, and a long time delay may finally affect a normal service of a user of the consumer network element.
In view of this, in the embodiment of the present application, a service request message of a consumer network element carries IP network addresses of multiple producer network elements, and an SCP in a corresponding region selectively forwards the service request in the multiple producer network elements until a target producer network element that normally responds is determined, that is, when an abnormal producer network element responds, the service request can be redirected to another producer network element to finally determine the target producer network element, so that the number of times that the consumer network element selects a network element to retransmit the message in an abnormal scene of the producer network element can be effectively reduced, the time delay of roaming signaling intercommunication is reduced, the success rate of message intercommunication is improved, the waiting time for a user to surf the internet during roaming is reduced, and the experience of the user in using a service is improved; therefore, the quantity of signaling intercommunication messages in the communication network can be reduced, and the load of message processing of network elements of the communication network can be reduced. In addition, the scene of abnormal response of the producer network element which can be responded by the SCP is enriched.
Fig. 1 shows an architecture diagram of an application scenario in an embodiment of the present application.
The application scenario shows a communication network, which may be a 5G mobile communication network. In a possible example, the communication network may comprise a core network of a mobile operator.
Illustratively, the communication network employs Model C's indirect communication architecture. The Communication network comprises a plurality of network elements, wherein the Communication network has a network storage capability Model C, i.e. an agent Discovery mode (invalid Communication Without removed Discovery). As illustrated in the figure, the plurality of network elements include a network warehousing function network element 101(NRF), a service communication agent network element 102(SCP), a Consumer network element 103(Consumer), a Producer network element 104(Producer), and the like. It should be noted that "network element" means a functional unit in a communication network, and it may be implemented by a stand-alone network device or by a part of software logic in the network device. In addition, the consumer and the producer only represent the identities of the service demander and the service provider, and do not limit the type of the network element specifically implemented by the corresponding network element and the type of the network device.
In some embodiments, each serving communication agent network element 102 corresponds to a respective regional setting. Such as "province" or others. Each network element (such as a consumer network element 103 and a producer network element 104) of each area communicates with the serving communication proxy network element 102 corresponding to the area to which the area belongs, and each serving communication proxy network element 102 communicates with each other to forward signaling interaction between each network element of the area to which the area belongs and network elements of other areas, for example, the consumer network element 103 and the producer network element 104 located in the two areas respectively forward mutual messages between the serving communication proxy network elements 102 of the two areas.
In some embodiments, the information (which may include an IP address) of each producer network element 104 may be registered with the network warehousing function network element 101 in advance. In the model c architecture, the network warehousing function network element 101 may discover available alternative producer network elements for the consumer network element 103, and provide network addresses of the alternative producer network elements to the consumer network element 103. Possibly, each area is correspondingly provided with one network warehousing function network element 101, and the network warehousing function network element 101 is responsible for discovering each alternative producer network element in the area.
The consumer network element 103 may fill the network address of each candidate producer network element in the service request message (for example, in a header of a "3 gpp-Sbi-Target-apiRoot") and send the service request message to the serving communication agent network element 102 in the local area. Thus, the service communication proxy network element 102 may have access to each alternative producer network element based on the respective network address in the service request message. For example, when the candidate producer network element C belongs to the local area, the service communication proxy network element a in the local area directly forwards the service request message; or, when the candidate producer network element D belongs to another area, the service request message is forwarded to the service communication proxy network element B of the other area through the service communication proxy network element a, and the service communication proxy network element B forwards the service request message to the candidate producer network element D. It can be understood that the service communication proxy network element can read the network addresses of multiple candidate producer network elements from the service request message of the consumer network element 103, and can forward the service request message to each of the candidate producer network elements one by one according to the network addresses until a target producer network element with a normal response is obtained, that is, if an abnormal response candidate producer network element is encountered, the service communication proxy network element corresponding to the same area can redirect itself according to the network address of the next candidate producer network element without returning to the consumer network element 103 to require the consumer network element 103 to repeat the process of regenerating the service request message (replacing the network address of the producer network element 104).
It can be understood that, in a cross-region scenario, for example, when the consumer network element E is in X province and each candidate producer network element is in Y province, the consumer network element E waits to receive a normal response message of the target producer network element after sending a service request message containing a network address of each candidate producer network element to the service communication proxy network element 102 in X province, and even if an abnormal response of the candidate producer network element occurs, the consumer network element E does not need to be returned, so that the number of messages for performing cross-province signaling interaction between X and Y repeatedly is omitted, and the load of processing messages by the network element is also reduced.
In some embodiments, each serving communication proxy network element 102 needs to have a first network address of the serving communication proxy network elements 102 of other regions to enable cross-regional message forwarding; furthermore, each serving communication agent network element 102 also needs to have the network address and the area of each consumer network element 103 and producer network element 104 to be able to determine the serving communication agent network element 102 of the corresponding area, and then forward the message to the network element within the area via the serving communication agent network element 102 of the corresponding area. Thus, each serving communication agent network element 102 may pre-store a network address field for the communication network corresponding to each of the regions, respectively, and a first network address of the serving communication agent network element 102 of each region, i.e. respective associated data constituting, for example, { network address field, region, first network address of serving communication agent network element }.
After receiving the service request message of the consumer network element 103, the service communication proxy network element 102 in this area may obtain the second network address of each alternative producer network element, and may determine the associated area through matching of each second network address and the network address field, and if in this area, directly forward the alternative producer network element in this area; and if the network is in other areas, the associated first network address can be determined according to the area, the service communication proxy network element 102 in the corresponding area can be routed according to the first network address, and the service communication proxy network element 102 in the corresponding area is routed to the corresponding alternative producer network element according to the second network address (extracted according to the received forwarded service request message) to forward the service request message. Similarly, the service communication proxy network element 102 may determine, according to the network address of the consumer network element 103 in the normal response message returned by the target producer network element, the area to which the consumer network element 103 belongs and the first network address of the corresponding service communication proxy network element 102, and further route to the corresponding service communication proxy network element 102 and forward the normal response message to the consumer network element 103.
Fig. 2 shows a schematic flowchart of a network element communication method in an embodiment of the present application.
Illustratively, the network element communication method may be performed by a serving communication proxy network element (SCP). The network element communication method comprises the following steps:
step S201: the service communication agent network element receives a service request message carrying a second network address of each alternative producer network element in the same region; the service request message originates from a consumer network element;
step S202: the service communication agent network element determines the area of the corresponding alternative producer network element according to the network address field to which at least one second network address belongs;
when it is determined that the alternative producer network element and the serving communication agent network element are in the same area (as determined by the above matching of the second network address and address field), step S203 is performed: and responding to the situation that each alternative producer network element and the service communication proxy network element belong to the same area, and forwarding the service request message to at least one alternative producer network element belonging to the area by the service communication proxy network element according to at least one second network address until a target producer network element which normally responds is determined.
In some embodiments, the specific implementation of step S203 may be as exemplarily shown in fig. 3, and the service communication agent network element may perform the following preset procedures according to the service request message:
step S301: the service communication agent network element selects a first address from each second network address in the service request message, and sends the service request message to a first alternative producer network element corresponding to the first address;
step S302: the service communication agent network element receives the response message of the first alternative producer network element and determines the response message as a normal response message or an abnormal response message;
step S303: if the response message is a normal response message, determining that the first alternative producer network element is the target producer network element;
step S304: and if the response message is an abnormal response message, the service communication agent network element selects a second address from each second network address in the service request message, and redirects to send the service request message to a second alternative producer network element corresponding to the second address.
In some embodiments, the exception response message may include an exception response code such as 307/308; or, an abnormal response code such as 500/429 related to network element error or heavy traffic may be included; alternatively, other exception response codes are also possible.
Step S305: the service communication agent network element receives the response message of the second alternative producer network element and determines the response message as a normal response message or an abnormal response message;
if the response message is a normal response message, step S306: the second candidate producer network element is the target producer network element.
If the response message is an abnormal response message, returning to step S304 to continue to take a next second address to redirect and forward the service request message and attempt to determine the target producer network element; and repeating the iteration in the same way until the target producer network element returning the normal response message is found. And the alternative producer network elements corresponding to each second network address are polled for forwarding until the alternative producer network elements replying with the normal response message are found as target producer network elements.
Or, when it is determined that the alternative producer network element is in another area, that is, the alternative producer network element and the consumer network element belong to different areas, step S204 is executed: and in response to that each candidate producer network element belongs to other areas different from the serving communication proxy network element, the serving communication proxy network element is routed to the serving communication proxy network elements of the other areas through a first network address, so that the serving communication proxy network elements of the other areas forward the service request message to at least one candidate producer network element of the other areas according to at least one second network address until a target producer network element which normally responds is determined.
That is, when the candidate producer network element is in another area, the SCP in this area forwards the service request message to the SCP corresponding to the other area, so that the SCP corresponding to the other area executes a process of determining the target producer network element, and the principle may refer to step S203 and fig. 3, which is not repeated herein.
Step S205: and the service communication agent network element receives the normal response message from the target producer network element and forwards the normal response message to the consumer network element.
Referring to fig. 4, a flowchart of a service request method in the embodiment of the present application is shown.
Illustratively, the service request method may be performed by a consumer network element. The service request method comprises the following steps:
step S401: and the consumer network element sends a service discovery request message to the network warehousing function network element of the area to which the consumer network element belongs so as to acquire a second network address of each alternative producer network element returned corresponding to the service discovery request message.
In some embodiments, the network warehousing function network element, i.e., NRF, may discover each alternative producer network element in response to the service discovery request message, and the second network address of each producer network element is registered in the network warehousing function unit in advance, so that the second network address can be queried and returned to the consumer network element. Each of said alternative producer network elements may be selected from the same area.
Step S402: and the consumer network element sends a service request message carrying each second network address to the corresponding service communication proxy network element, so as to determine the area to which each alternative producer network element belongs and determine the corresponding service communication proxy network element according to the network address segment to which each second network address belongs, so that the service request message is forwarded to at least one alternative producer network element by the determined service communication proxy network element, and thus a target producer network element with normal response is determined.
In some embodiments, the consumer network element may fill each second network address in a service request message, for example in a "3 gpp-Sbi-Target-apiRoot" message header. In some examples, the second network addresses in the service request message may be arranged in a sequence, and the SCP in the embodiment of fig. 3 may extract each second network address in turn according to the sequence until finding the corresponding target producer network element with normal response. Alternatively, in other examples, each second network address may be configured with a priority, and the SCP may preset the priority selection logic of the second network addresses to select the second network addresses in turn according to the priority.
Step S403: and the consumer network element receives a normal response message of the target producer network element corresponding to the service request message from the corresponding service communication agent network element.
In one case, the normal response message may be generated by a target producer network element in the belonging area and sent to a consumer network element through the serving communication proxy network element; in another case, the normal response message may be generated by a target producer network element in another region, and forwarded to the corresponding service communication proxy network element through the service communication proxy network element in the other region, and then forwarded to the consumer network element.
Fig. 5 is a schematic diagram illustrating a service communication flow according to an embodiment of the present application.
In this flow, a schematic diagram of a communication flow among a consumer network element, a network warehousing function network element, a service communication agent network element, and a producer network element is exemplarily shown. The first service communication proxy network element and the consumer network element correspond to the same area, and the second service communication proxy network element and the consumer network element correspond to different areas.
Each service communication agent network element prestores a network address segment associated with each region and a first network address of the service communication agent network element of each region. The network warehousing function network element is pre-registered with a second network address of each producer network element.
Referring to fig. 5, the process includes:
step S501: a consumer network element sends a service discovery request message to a network warehousing function network element in the same region;
step S502: the network warehousing function network element discovers a plurality of alternative producer network elements and returns a plurality of second network addresses thereof to the consumer network element.
In some embodiments, the network warehousing function units in the same area directly discover alternative producer network elements in the same area; in the roaming scene, the first network warehousing function unit in the same area forwards the service discovery request message to the second network warehousing function unit in other areas corresponding to roaming so as to discover the alternative producer network elements in other areas, and returns the service discovery request message to the first network warehousing function unit and then returns the service discovery request message to the consumer network element.
Step S503: the consumer network element sends a service request message carrying the plurality of second network addresses to a first service communication agent network element in the area;
step S504: the first service communication agent network element extracts a first address from each second network address, and matches the first address with the network address field, so as to determine that the area to which each alternative producer network element belongs (since each alternative producer network element is usually in the same area) is the local area or other areas.
If each candidate producer network element is located in the local area (i.e. each candidate producer network element is consistent with the area to which the first service communication proxy network element belongs), go to step S505; if the area is other area (that is, the area of each candidate producer network element is not consistent with the area of the first service communication proxy network element), step S511 is entered;
step S505: the first service communication agent network element forwards the service request message to a first alternative producer network element corresponding to the first address;
step S506: the first candidate producer network element is insufficient in resources, and an abnormal response message is returned to the first service communication agent network element;
step S507: in response to the exception response message, the first serving communication agent network element reselects a second address from the plurality of second network addresses;
step S508: the first service communication agent network element forwards the service request message to a second alternative producer network element corresponding to the second address;
step S509: the second alternative producer network element returns a normal response message of the first service communication agent network element, and the second alternative producer network element is the target producer network element;
step S510: and the first service communication agent network element returns the normal response message to the consumer network element.
Step S511: if the alternative producer network elements and the first service communication proxy network element are not in the same area, the first service communication proxy network element determines a corresponding first network address according to other areas to which the alternative producer network elements belong, and forwards the service request message to a second service communication proxy network element corresponding to the first network address;
step S512: the second service communication network element extracts a first address from each second network address contained in the service request message and forwards the service request message to a first alternative producer network element corresponding to the first address;
step S513: if the first candidate producer network element is insufficient in resources, returning an abnormal response message to the second service communication agent network element;
step S514: in response to said exception response message, the second serving communication agent network element reselects a second address from said plurality of second network addresses;
step S515: the second service communication agent network element forwards the service request message to a second alternative producer network element corresponding to the second address;
step S516: the second alternative producer network element returns a normal response message of the second service communication agent network element, and the second alternative producer network element is the target producer network element;
step S517: the second service communication proxy network element returns the normal response message to the first service communication proxy network element;
step S518: and the first service communication agent network element returns the normal response message to the consumer network element.
Referring to fig. 6A and fig. 6B, communication flow diagrams of a scenario in which a consumer network element and a target producer network element belong to the same area (i.e., "intra-area scenario") and a scenario not belonging to the same area (i.e., "roaming scenario") in the specific example of the present application are respectively shown.
In fig. 6A, a consumer network element, NRF, producer network element 1, producer network element 2, SCP are exemplarily shown. The flow in fig. 6A includes:
0. network element registration: the producer network element 1 and the producer network element 2 are registered in the NRF;
1. and (3) network element discovery: the consumer network element sends a service discovery request message to the NRF;
NRF returns IP addresses of the producer network element 1 and the producer network element 2 to the consumer network element;
3. the consumer network element sends a service request message to the SCP, wherein the 3gpp-Sbi-Target-apiRoot carries the IP addresses of the producer network elements 1 and 2;
SCP forwards service request message to producer network element 1 according to IP address of producer network element 1 in 3gpp-Sbi-Target-apiRoot in request;
5. the producer network element 1 is abnormal and returns an abnormal response message to the SCP;
and 6, the SCP receives the abnormal response and carries out redirection: forwarding the service request message to the producer network element 2 according to the IP address of the producer network element 2;
7. the producer network element 2 returns a normal response message to the SCP;
and 8, the SCP returns the normal response message to the consumer network element.
The roaming scenario of fig. 6B exemplarily shows a consumer network element, an NRF of visited province, an NRF producer network element 1 of home province, a producer network element 2, an SCP of visited province, an SCP of home province. The consumer network element belongs to the producer network element 1, and the producer network element 2 belongs to the province. The flow in fig. 6B includes:
0. network element registration: a producer network element 1 and a producer network element 2 of the attribution province are registered in an NRF of the attribution province;
1. and (3) network element discovery: the consumer network element sends a service discovery request message to the NRF of the visited province;
2. the NRF of the visiting province forwards a service discovery request message to the NRF of the belonged province;
3. the NRF of the province discovers the producer network element 1 and the producer network element 2 of the province, and returns the registration information (namely IP addresses) of the producer network elements 1 and 2 to the NRF of the visiting province;
4. NRF of the visiting province returns registration information of the producer network elements 1 and 2 to the consumer network element;
5. the consumer network element sends a service request message to an SCP of the visited province, wherein 3gpp-Sbi-Target-apiRoot carries the IP addresses of the producer network elements 1 and 2;
6. and the SCP of the visiting province forwards the service request message to the SCP of the attribution province according to the IP address of the producer network element 1 in the '3 gpp-Sbi-Target-apiRoot' in the request. Specifically, the IP address of the SCP of the associated home province is determined for routing to the SCP of the home province, i.e. by matching to the area of the address field to which the IP address of the producer network element 1 belongs.
7. And the SCP of the affiliation province forwards the service request message to the producer network element 1 according to the IP address of the producer network element 1 in the '3 gpp-Sbi-Target-apiRoot' in the request.
8. And the producer network element 1 is abnormal and returns an abnormal response message to the SCP of the attribution province.
9. The SCP of the attribution province receives the abnormal response message of the producer network element 1, and carries out redirection: forwarding the service request message to the producer network element 2 according to the IP address of the producer network element 2;
10. the producer network element 2 returns a normal response message to the SCP of the affiliation province;
11. the SCP of the attribution province returns the normal response message to the SCP of the visiting province;
12. and the SCP of the visited province returns the normal response message to the consumer network element.
Fig. 7 is a schematic block diagram of a network element communication apparatus according to an embodiment of the present application. Since the network element communication apparatus can be implemented in the serving communication proxy network element in the previous embodiment, the principle of the network element communication apparatus may refer to the previous network element communication method, and therefore, technical features are not repeatedly described here.
The network element communication apparatus 700 includes:
a receiving module 701, configured to receive a service request message carrying a second network address of each candidate producer network element in the same area; the service request message originates from a consumer network element;
a region determining module 702, configured to determine, according to a network address segment to which at least one of the second network addresses belongs, a region to which a corresponding candidate producer network element belongs;
a forwarding module 703, configured to forward, in response to that each candidate producer network element and the service communication proxy network element belong to the same area, the service request message to at least one candidate producer network element belonging to the area according to at least one of the second network addresses until a target producer network element that normally responds is determined; or, in response to that each candidate producer network element belongs to another area different from the serving communication proxy network element, routing to the serving communication proxy network element of the other area through the first network address of the other area, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element which normally responds is determined;
the receiving module 701 is configured to receive a normal response message from a target producer network element, and forward the normal response message to the consumer network element through the forwarding module.
Fig. 8 is a block diagram of a service request device according to an embodiment of the present application. Since the service request apparatus can be implemented in the consumer network element in the previous embodiment, the principle of the service request apparatus can refer to the previous service request method, and therefore, technical features are not repeated herein.
The service request apparatus 800 includes:
a service discovery module 801, configured to send a service discovery request message to a network warehousing function network element in an area to which a consumer network element belongs, so as to obtain a second network address of each candidate producer network element returned corresponding to the service discovery request message;
a service request module 802, configured to send a service request message carrying each second network address to a service communication proxy network element corresponding to the consumer network element, so as to determine, according to a network address segment to which each second network address belongs, an area to which each candidate producer network element belongs and determine a corresponding service communication proxy network element, so that the service request message is forwarded by the determined service communication proxy network element to at least one candidate producer network element, so as to determine a target producer network element that responds normally;
a receiving module 803, configured to receive, from the service communication proxy network element corresponding to the consumer network element, a normal response message of the target producer network element corresponding to the service request message.
It should be noted that, all or part of the functional modules in the embodiments of fig. 7 and 8 may be implemented by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of program instruction products. The program instruction product includes one or more program instructions. The processes or functions according to the present application occur in whole or in part when program instruction instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The program instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
In addition, the apparatuses disclosed in the embodiments of fig. 7 and fig. 8 can be implemented by other module division methods. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules described is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or modules may be combined or may be dynamic to another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in an electrical or other form.
In addition, each functional module and sub-module in the embodiments of fig. 7 and 8 may be dynamically in one processing unit, or each module may exist alone physically, or two or more modules may be dynamically in one unit. The dynamic component can be realized in a form of hardware or a form of a software functional module. The dynamic components described above, if implemented in the form of software functional modules and sold or used as a stand-alone product, may also be stored in a computer readable storage medium. The storage medium may be a read-only memory, a magnetic or optical disk, or the like.
It should be noted that the flow or method representations represented by the flow diagrams of the above-described embodiments of the present application may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process. And the scope of the preferred embodiments of the present application includes other implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved.
For example, the order of the steps in the embodiments of fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, etc. may be changed in a specific scenario, and is not limited to the above representation.
Fig. 9 is a schematic circuit diagram of a network device according to an embodiment of the present application.
In some embodiments, the network device 900 is configured to implement the functionality of the service communication proxy network element or the consumer network element of the previous embodiments, for example, to run a computer program to perform a network element communication method of the service communication proxy network element or to perform a service request method of the consumer network element. Possibly, the network device 900 may be, for example, a server or the like.
The network device 900 includes a bus 901, a processor 902, a memory 903, and a communicator 904. The processor 902 and the memory 903 may communicate with each other via a bus 901. The memory 903 may have stored therein program instructions (e.g., system or application software). The processor 902 implements the steps in the interception method of the embodiments of the present application by executing program instructions in the memory 903.
The bus 901 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. Although only one thick line is shown in fig. 1 for ease of illustration, only one bus or type of bus is not shown.
In some embodiments, the processor 902 may be implemented as a Central Processing Unit (CPU), a micro-Processing Unit (MCU), a System On a Chip (System On Chip), or a field programmable logic array (FPGA). The Memory 903 may include a Volatile Memory (Volatile Memory) for temporary storage of data when the program is executed, such as a Random Access Memory (RAM).
The Memory 903 may also include a non-volatile Memory (non-volatile Memory) for data storage, such as a Read-Only Memory (ROM), a flash Memory, a Hard Disk Drive (HDD) or a Solid-State Disk (SSD).
The communicator 904 is used for communicating with the outside. In particular examples, the communicator 904 can include one or more wired and/or wireless communication circuit modules. For example, the wired communication circuit module may include one or more of a wired network card, a USB module, a serial interface module, and the like, for example. As another example, the wireless communication protocol followed by the wireless communication module includes: such as one or more of Near Field Communication (NFC) technology, Infrared (IR) technology, Global System for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Code Division Multiple Access (Time-Division Code Division Multiple Access, TD-SCDMA), Long Term Evolution (LTE), BlueTooth (BlueTooth), Global Navigation Satellite System (GNSS), and the like.
A computer-readable storage medium may also be provided in an embodiment of the present application, and store program instructions, where the program instructions are executed to perform the flow steps of the network element communication method or the service request method in the previous embodiment.
That is, the method steps in the above-described embodiments are implemented as software or computer code storable in a recording medium such as a CD ROM, a RAM, a floppy disk, a hard disk, or a magneto-optical disk, or computer code originally stored in a remote recording medium or a non-transitory machine-readable medium and to be stored in a local recording medium downloaded through a network, so that the method represented herein can be stored in such software processes on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware such as an ASIC or FPGA.
In summary, embodiments of the present application provide a network element communication method, a service request method, an apparatus, a device, and a storage medium, which are applied to a communication network, where the communication network includes a service communication proxy network element set corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the consumer network element acquires the second network address of each discovered alternative producer network element from the network warehousing function network element and sends a service request to the service communication agent network element in the region to which the consumer network element belongs; responding to that each alternative producer network element and the service communication proxy network element belong to the same area, and forwarding the service request message to at least one alternative producer network element belonging to the area by the service communication proxy network element according to at least one second network address; or, the service communication proxy network element sends the service communication proxy network element in other areas to forward to the alternative producer network element, so that the service communication proxy network element can directly or selectively redirect the target producer network element which determines the normal response in the multiple alternative producer network elements according to the multiple second network addresses carried by the service request, thereby solving the problems in the prior art.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (11)
1. A network element communication method is characterized in that the method is applied to a service communication agent network element which is arranged corresponding to each area in a communication network; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the network element communication method comprises the following steps:
the service communication agent network element receives a service request message carrying a second network address of each alternative producer network element in the same region; the service request message originates from a consumer network element;
the service communication agent network element determines the area of the corresponding alternative producer network element according to the network address field to which at least one second network address belongs;
responding that each alternative producer network element and the service communication proxy network element belong to the same area, and forwarding the service request message to at least one alternative producer network element belonging to the area by the service communication proxy network element according to at least one second network address until a target producer network element which normally responds is determined; or, in response to that each candidate producer network element belongs to another area different from the serving communication proxy network element, the serving communication proxy network element routes to the serving communication proxy network element of the other area through a first network address, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element that normally responds is determined;
and the service communication agent network element receives the normal response message from the target producer network element and forwards the normal response message to the consumer network element.
2. The network element communication method of claim 1, wherein the responding each alternative producer network element and the serving communication proxy network element belong to the same area, and the serving communication proxy network element forwards the service request message to at least one alternative producer network element belonging to the area according to at least one of the second network addresses until a target producer network element with a normal response is determined, comprises:
the service communication agent network element executes a preset flow according to the service request message:
the service communication agent network element selects a first address from each second network address in the service request message, and sends the service request message to a first alternative producer network element corresponding to the first address;
the service communication agent network element receives the response message of the first alternative producer network element and determines the response message as a normal response message or an abnormal response message;
if the response message is a normal response message, the first alternative producer network element is the target producer network element;
if the response message is an abnormal response message, the service communication agent network element selects a second address from each second network address in the service request message, and redirects to send the service request message to a second alternative producer network element corresponding to the second address;
the service communication agent network element receives the response message of the second alternative producer network element and determines the response message as a normal response message or an abnormal response message;
and if the response message is a normal response message, the first alternative producer network element is the target producer network element.
3. The network element communication method according to claim 2, wherein, in response to each candidate producer network element belonging to another area different from the serving communication proxy network element, the serving communication proxy network element is routed to the serving communication proxy network element of the other area through a first network address, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element for normal response is determined, comprising:
the service communication proxy network element accesses the service communication proxy network element of the other area according to the first network address associated with the other area so as to forward the service request message;
and the service communication agent network elements in other areas execute the preset flow according to the service request message until a target producer network element which normally responds is determined.
4. The network element communication method of claim 2, wherein the exception response message comprises an exception response code associated with a network element error or a heavy traffic.
5. The network element communication method according to claim 1, wherein the communication network is a 5G mobile communication network, and the second network address of each candidate producer network element is included in a header of the service request message.
6. A service request method is applied to a communication network, wherein a consumer network element requests a producer network element for service; the communication network comprises a service communication agent network element and a network warehousing function network element which are arranged corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the service request method comprises the following steps:
the consumer network element sends a service discovery request message to the network warehousing function network element of the area to which the consumer network element belongs so as to acquire a second network address of each alternative producer network element returned corresponding to the service discovery request message;
the consumer network element sends a service request message carrying each second network address to a corresponding service communication proxy network element so as to determine the area to which each alternative producer network element belongs and determine the corresponding service communication proxy network element according to the network address segment to which each second network address belongs, so that the service request message is forwarded to at least one alternative producer network element by the determined service communication proxy network element, and a target producer network element with normal response is determined;
and the consumer network element receives a normal response message of the target producer network element corresponding to the service request message from the corresponding service communication agent network element.
7. The service request method according to claim 6, wherein the communication network is a 5G mobile communication network, and the second network address of each candidate producer network element is included in a header of the service request message.
8. A network element communication device is characterized in that the device is applied to a service communication agent network element which is arranged corresponding to each area in a communication network; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the network element communication device comprises:
a receiving module, configured to receive a service request message carrying a second network address of each candidate producer network element in the same area; the service request message originates from a consumer network element;
the area determining module is used for determining the area of the corresponding candidate producer network element according to the network address field to which the at least one second network address belongs;
a forwarding module, configured to forward, in response to that each candidate producer network element and the service communication proxy network element belong to the same area, the service request message to at least one candidate producer network element belonging to the area according to at least one second network address until a target producer network element that normally responds is determined; or, in response to that each candidate producer network element belongs to another area different from the serving communication proxy network element, routing to the serving communication proxy network element of the other area through the first network address of the other area, so that the serving communication proxy network element of the other area forwards the service request message to at least one candidate producer network element of the other area according to at least one second network address until a target producer network element which normally responds is determined;
the receiving module is configured to receive a normal response message from a target producer network element, and forward the normal response message to the consumer network element through the forwarding module.
9. A service request device is applied to a communication network, wherein a consumer network element requests a service from a producer network element; the communication network comprises a service communication agent network element and a network warehousing function network element which are arranged corresponding to each area; each service communication agent network element prestores: a network address segment for the communication network corresponding to each of the regions, respectively, and a first network address of a serving communication agent network element of each region; the service request apparatus includes:
the service discovery module is used for sending a service discovery request message to the network warehousing function network element of the area to which the consumer network element belongs so as to acquire a second network address of each candidate producer network element returned corresponding to the service discovery request message;
the service request module is used for sending a service request message carrying each second network address to a service communication proxy network element corresponding to the consumer network element so as to determine the area to which each alternative producer network element belongs according to the network address segment to which each second network address belongs and determine the corresponding service communication proxy network element, so that the service request message is forwarded to at least one alternative producer network element by the determined service communication proxy network element, and a target producer network element with normal response is determined;
and the receiving module is used for receiving a normal response message of the service request message corresponding to the target producer network element from the service communication agent network element corresponding to the consumer network element.
10. A network device, comprising: a communicator, a memory, and a processor; the communicator is used for communicating with the outside; the memory is to store program instructions; the processor is configured to execute the program instructions to perform the network element communication method according to any one of claims 1 to 5; or
Performing the service request method as claimed in claim 6 or 7.
11. A computer-readable storage medium, in which program instructions are stored, the program instructions being executed to perform the network element communication method according to any one of claims 1 to 5; or to perform the service request method according to claim 6 or 7.
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| CN113727337A (en) * | 2020-05-21 | 2021-11-30 | 诺基亚通信公司 | Physical service communication agent domain |
| CN113542219A (en) * | 2021-06-07 | 2021-10-22 | 中国人民解放军战略支援部队信息工程大学 | Method and system for realizing signaling access based on multi-mode network element proxy |
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| CN114980200A (en) * | 2022-05-16 | 2022-08-30 | 中国电信股份有限公司 | Message processing method and device, electronic equipment and computer readable storage medium |
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