WO2019137550A1 - Procédé de sélection d'élément de réseau d'entrée de système multimédia, procédé et dispositif d'enregistrement - Google Patents

Procédé de sélection d'élément de réseau d'entrée de système multimédia, procédé et dispositif d'enregistrement Download PDF

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Publication number
WO2019137550A1
WO2019137550A1 PCT/CN2019/071738 CN2019071738W WO2019137550A1 WO 2019137550 A1 WO2019137550 A1 WO 2019137550A1 CN 2019071738 W CN2019071738 W CN 2019071738W WO 2019137550 A1 WO2019137550 A1 WO 2019137550A1
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Prior art keywords
network element
network
multimedia system
information
network slice
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PCT/CN2019/071738
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English (en)
Chinese (zh)
Inventor
马景旺
聂胜贤
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华为技术有限公司
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Publication of WO2019137550A1 publication Critical patent/WO2019137550A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1045—Proxies, e.g. for session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method, a registration method, and a device for selecting a multimedia system entry network element.
  • the internet protocol multimedia subsystem is used to provide carrier services such as voice and messaging.
  • IMS networks may be deployed within a public land mobile network (PLMN), each associated with one or more network slices.
  • PLMN public land mobile network
  • the present application provides a method, a registration method, and a device for selecting a multimedia system entry network element, so as to implement a suitable IMS network for the terminal.
  • the present application provides a method for selecting a multimedia system entry network element, where the method includes: the terminal sends information of a network slice to a domain name server, and is used to obtain a multimedia system entry network element that supports the network slice; The address information of the multimedia system entry network element of the domain name server, the multimedia system entry network element supporting the network slice.
  • the terminal sends the information of the network slice to the domain name server to obtain the multimedia system entry network element supporting the network slice, and the domain name server returns the multimedia system entry network element supporting the network slice to the terminal.
  • the terminal can connect to the IMS system through the multimedia system entry network element, and the method selects a suitable multimedia system entry network element for the terminal, which is helpful for selecting an appropriate IMS network, thereby achieving correct connection to the IMS.
  • the information of the network slice includes some or all of the following information: network slice selection assistance information, network slice identifier, and network slice type.
  • the terminal selects the network slice according to the network slice selection policy, where the network slice selection policy includes a correspondence between the network slice and the multimedia service or the application. For example, when the terminal wants to initiate a certain multimedia service or application, the terminal may select a corresponding network slice according to the network slice selection policy and obtain information about the network slice.
  • the terminal initiates a registration process to the multimedia system according to the address information of the multimedia system entry network element. After obtaining the address information of the multimedia system entry network element, the terminal may initiate a registration process to the multimedia system to implement connection to the IMS.
  • the present application provides a method for selecting a multimedia system entry network element, where the method includes: a domain name server receiving information of a network slice from a terminal; and a domain name server acquiring, according to the information of the network slice, a network slice that supports the network The address information of the multimedia system entry network element; the domain name server sends the address information of the multimedia system entry network element to the terminal.
  • the domain name server receives the information of the network slice sent by the terminal, obtains the multimedia system entry network element supporting the network slice, and returns the multimedia system entry network element supporting the network slice to the terminal.
  • the terminal can connect to the IMS system through the multimedia system entry network element, and the method selects a suitable multimedia system entry network element for the terminal, which is helpful for selecting an appropriate IMS network, thereby achieving correct connection to the IMS.
  • the domain name server obtains address information of the multimedia system entry network element supporting the network slice according to the information of the network slice, including:
  • the domain name server obtains the address information of the ingress network element of the multimedia system from the local information according to the information of the network slice;
  • the domain name server sends the information of the network slice to the network function library network element, and the domain name server receives the address information of the multimedia system entry network element from the network function library network element.
  • the domain name server locally configures the address information of the multimedia system entry network element and the network slice information supported by the multimedia system entry network element. Therefore, the domain name server can locally obtain the multimedia system entry network that supports the network slice. Meta address information.
  • the address information of the multimedia system entry network element and the network slice information supported by the multimedia system entry network element are configured on the network function library network element, so the domain name server can obtain and support the network slice from the network function library. Multimedia system entry network element.
  • the information of the network slice includes some or all of the following information: network slice selection assistance information, network slice identifier, and network slice type.
  • the present application provides a method for selecting a multimedia system portal network element, where the method includes: a network function library network element receives information of a network slice from a domain name server, and is used to obtain a multimedia system portal network supporting the network slice.
  • the network function library network element obtains address information of the multimedia system entry network element supporting the network slice according to the information of the network slice; the network function library network element sends the multimedia system entry network element to the domain name server. Address information, the multimedia system ingress network element supporting the network slice.
  • the address information of the multimedia system entry network element and the network slice information supported by the multimedia system entry network element are configured on the network function library network element, so the domain name server can obtain the multimedia system supporting the network slice from the network function library. Incoming network element. It realizes the selection of the correct multimedia system entry network element for the terminal.
  • the information of the network slice includes part or all of the following information: network slice selection assistance information, network slice identifier, and network slice type.
  • the network function library network element receives information of the multimedia system entry network element from the multimedia system entry network element, and registers the multimedia system entry network element with the network function library network element; The network function library network element sends a result indication to the multimedia system ingress network element.
  • the result indication may be registration completion, or registration failure.
  • the information of the multimedia system entry network element includes address information of the multimedia system entry network element and information of the network slice supported by the multimedia system entry network element.
  • the present application provides a method for registering a multimedia system portal network element, where the method includes: a multimedia system portal network element sends information of a multimedia system portal network element to a network function library network element, where the multimedia system entry is used.
  • the network element registers with the network function library network element; the multimedia system entry network element receives the result indication from the network function library network element.
  • the result indication may be registration completion, or registration failure.
  • the above method can register the information of the multimedia system entry network element to the network function library network element, so that the domain name server needs to obtain the information of the multimedia system entry network element, and can be conveniently managed from the network function library network element.
  • the information of the multimedia system entry network element includes address information of the multimedia system entry network element and information of the network slice supported by the multimedia system entry network element.
  • the present application provides a device, which may be a terminal or a chip.
  • the device has the functionality to implement the various embodiments of the first aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the application provides an apparatus, including: a processor and a memory; the memory is configured to store an instruction, when the apparatus is running, the processor executes the instruction stored in the memory, so that the apparatus performs the first Aspect or method for selecting a multimedia system entry network element in any of the implementation methods of the first aspect.
  • the memory may be integrated in the processor or may be independent of the processor.
  • the application provides an apparatus, the apparatus comprising a processor, the processor for coupling with a memory, and reading an instruction in the memory and performing any of the first aspect or the first aspect according to the instruction A method for selecting a multimedia system entry network element in the implementation method.
  • the present application provides an apparatus, which may be a domain name server or a chip.
  • the device has the functionality to implement the various embodiments of the second aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the present application provides an apparatus, including: a processor and a memory; the memory is configured to store an instruction, when the apparatus is running, the processor executes the instruction stored in the memory, so that the apparatus performs the second The method for selecting a multimedia system entry network element in any of the implementation methods of the second aspect.
  • the memory may be integrated in the processor or may be independent of the processor.
  • the application provides an apparatus, the apparatus comprising a processor, the processor for coupling with a memory, and reading an instruction in the memory and performing any of the second aspect or the second aspect according to the instruction A method for selecting a multimedia system entry network element in the implementation method.
  • the application provides a device, which may be a network function library network element or a chip.
  • the device has the functionality to implement the various embodiments of the third aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the present application provides an apparatus, including: a processor and a memory; the memory is configured to store an instruction, when the apparatus is running, the processor executes the instruction stored in the memory, so that the apparatus performs the foregoing
  • the memory may be integrated in the processor or may be independent of the processor.
  • the present application provides an apparatus, the apparatus comprising a processor, the processor for coupling with a memory, and reading an instruction in the memory and performing the third aspect or the third aspect according to the instruction A method for selecting a multimedia system entry network element in an implementation method.
  • the application provides a device, which may be a multimedia system entry network element or a chip.
  • the device has the functionality to implement the various embodiments of the fourth aspect described above. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the application provides an apparatus, including: a processor and a memory; the memory is configured to store an instruction, when the apparatus is running, the processor executes the instruction stored in the memory, so that the apparatus performs the foregoing
  • the memory may be integrated in the processor or may be independent of the processor.
  • the present application provides an apparatus, the apparatus comprising a processor, the processor for coupling with a memory, and reading an instruction in the memory and performing the fourth aspect or the fourth aspect according to the instruction A method for registering a multimedia system entry network element in an implementation method.
  • the present application further provides a readable storage medium, wherein the readable storage medium stores a program or an instruction, and when it is run on a computer, causes selection of any multimedia system entry network element of the foregoing aspects. The method is executed.
  • the present application further provides a readable storage medium, wherein the readable storage medium stores a program or an instruction, and when it is run on a computer, the registration method of any multimedia system entry network element of the above aspect is Executed.
  • the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a method of selecting any of the multimedia system entry network elements of the above aspects.
  • the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a registration method of any of the above-described aspects of the multimedia system entry network element.
  • the present application further provides a system, the system comprising a domain name server, wherein the domain name server is operative to perform the steps performed by the domain name server in any of the methods of the second aspect and the second aspect.
  • the system may further include a multimedia system ingress network element, where the multimedia system ingress network element may be used to perform the solution in any of the foregoing second and second aspects or the solution provided by the embodiment of the present invention.
  • the steps performed by the multimedia system entry network element may further include other devices, such as terminal devices, and the like that interact with the domain name server and/or the multimedia system entry network element in the solution provided by the embodiment of the present invention.
  • the present application further provides a system, where the system includes a network function library network element, where the network function library network element can be used to perform the network function library in any of the foregoing methods of the third aspect and the third aspect.
  • the steps performed by the network element may further include a domain name server, and the domain name server may be used to perform the method performed by the domain name server in any of the methods of the foregoing third aspect and the third aspect or the solution provided by the embodiment of the present invention.
  • the system may further include other devices that interact with the domain name server and/or the network function library network element in the solution provided by the embodiment of the present invention, such as a multimedia system portal network element, and a terminal device. and many more.
  • the present application further provides a system, where the system includes a multimedia system ingress network element, where the multimedia system ingress network element can be used to perform the multimedia system entry in any of the methods of the fourth aspect and the fourth aspect.
  • the steps performed by the network element may further include a network function library network element, where the network function library network element may be used to perform the method of any of the foregoing fourth and fourth aspects or the solution provided by the embodiment of the present invention.
  • the system may further include other devices in the solution provided by the embodiment of the present invention that interact with the multimedia system entry network element and/or the network function library network element, for example, a domain name server and the like.
  • FIG. 1 is a schematic diagram of a possible network architecture provided by the present application
  • FIG. 2A is a schematic diagram of a method for selecting an ingress network element of a multimedia system according to the present application
  • FIG. 2B is a schematic diagram of a method for registering a portal element of a multimedia system according to the present application
  • FIG. 3A is a schematic diagram of another method for selecting an ingress network element of a multimedia system according to the present application.
  • FIG. 3B is a schematic diagram of another method for selecting an ingress network element of a multimedia system according to the present application.
  • FIG. 4 is a schematic diagram of a device provided by the present application.
  • FIG. 5 is a schematic diagram of a terminal provided by the present application.
  • Figure 6 is a schematic diagram of a device provided by the present application.
  • FIG. 7 is a schematic diagram of a domain name server provided by the present application.
  • Figure 8 is a schematic diagram of a device provided by the present application.
  • FIG. 9 is a schematic diagram of a multimedia system entry network element provided by the present application.
  • Figure 10 is a schematic diagram of a device provided by the present application.
  • FIG. 11 is a schematic diagram of a network function library network element provided by the present application.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • the network architecture includes a terminal, a domain name server, one or more multimedia system ingress network elements, and an IMS.
  • the terminal may request the domain name server to obtain the address information of one or more multimedia system ingress network elements, and then the terminal connects to an IMS network through one of the multimedia system ingress network elements, and one IMS network supports one or more network slices.
  • a terminal is a device with wireless communication capabilities that can be deployed on land, indoors or outdoors, handheld or on-board; it can also be deployed on the water (such as ships); it can also be deployed in the air (such as airplanes, balloons, and Satellite, etc.).
  • the terminal may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, or the like; or a user equipment (UE) in various forms, a mobile station (MS), a terminal device (terminal device).
  • MS mobile station
  • terminal device terminal device
  • the domain name server has the functions of parsing the input domain name and other information, and querying the information of the network element.
  • the domain name server can be used to query and return the address information of the multimedia system entry network element to the terminal.
  • the multimedia system entry network element is a network element having a session control function in the multimedia system.
  • the multimedia system ingress network element may be a call-session session control function (P-CSCF) network element or the like.
  • P-CSCF call-session session control function
  • the P-CSCF network element can act as a proxy to receive and forward requests and services. It can also act as a proxy for a user or as an application function (AF) network element.
  • the P-CSCF network element is responsible for the resource authentication of the network protocol (IP) of the IMS local access network (or other granularity, such as session, data flow, etc.), and provides end-to-end service guarantee for the IMS.
  • IP network protocol
  • the P-CSCF network element provides the necessary security encryption measures for the access network that does not provide the link layer security protection mechanism.
  • each IMS network supports one or more network slices.
  • the network slice selection policy includes a correspondence between the network slice and the multimedia service or application.
  • the terminal supports access of multiple network slices. Therefore, when the terminal wants to initiate an application or multimedia service, the terminal may select a network slice corresponding to the application or the multimedia service to be initiated according to the network slice selection policy, and decide to use the network slice. Network slicing.
  • each specific multimedia service in the IMS such as voice and video
  • each multimedia service or application corresponds to one network slice.
  • the above functions can be either a network component in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • the domain name server is referred to as a DNS
  • the multimedia ingress network element is a P-CSCF network element as an example for description.
  • the P-CSCF network element is simply referred to as a P-CSCF.
  • the DNS in the following description can be replaced by other domain name servers, and the P-CSCF network element can be replaced by other multimedia ingress network elements.
  • the P-CSCF network element can be replaced by other multimedia ingress network elements.
  • a method for selecting a multimedia system entry network element includes the following steps:
  • Step 201 The terminal sends the information of the network slice to the DNS, and correspondingly, the DNS receives the network slice information from the terminal.
  • the terminal sends information of the network slice to the DNS for requesting the DNS to obtain the P-CSCF supporting the network slice.
  • the terminal may send a request message to the DNS, where the request message includes the information of the network slice.
  • the request message further includes a P-CSCF type, where the P-CSCF type is used to indicate that the P-CSCF that supports the network slice is requested to be obtained.
  • the P-CSCF type is not included in the request message, and the name of the request message may be used to indicate that the request to acquire the P-CSCF supporting the network slice.
  • the terminal may further send a query message to the DNS, where the query message includes information about the network slice.
  • the query message further includes a P-CSCF type, where the P-CSCF type is used to indicate that the P-CSCF that supports the network slice is requested to be obtained.
  • the P-CSCF type is not included in the query message, and the name of the query message may be used to indicate that the P-CSCF that supports the network slice is requested to be obtained.
  • the network slice may be selected according to the multimedia service or application to be initiated and the network slice selection policy, and the selected network slice information is obtained.
  • the network slice selection policy includes a correspondence between the network slice and the multimedia service or the application.
  • the information of the network slice sent by the terminal to the DNS includes but is not limited to part or all of the following information: network slice selection auxiliary information, network slice identifier, and network slice type.
  • the network slice selection assistance information may be a single network slice selection assistance information (S-NSSAI).
  • S-NSSAI single network slice selection assistance information
  • the Slice Type can be a Service Type supported by the network slice, such as massive IoT (MIoT), enhanced mobile broadband (eMBB), and ultra-reliable low-latency communication. (ultra-reliable low latency communications, URLLC) and the like.
  • MIoT massive IoT
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low latency communications
  • Step 202 The DNS obtains address information of the P-CSCF supporting the network slice according to the information of the network slice.
  • the address information of the P-CSCF may include, for example, an IP address or a medium access control (MAC) address.
  • IP address an IP address or a medium access control (MAC) address.
  • MAC medium access control
  • the DNS is locally configured with information of the P-CSCF, and the information of the P-CSCF includes information such as address information of the P-CSCF and network slice capability of the P-CSCF.
  • the P-CSCF network slicing capability refers to a network slice supported by the P-CSCF. For example, if the P-CSCF supports the network slice 1, the network slice 2, and the network slice 3, the network slice capability of the P-CSCF includes: Network Slice 1, Network Slice 2, and Network Slice 3.
  • the DNS obtains the address information of the P-CSCF supporting the network slice locally according to the information of the network slice.
  • the DNS may locally obtain the P-CSCF supporting the network slice 1 according to the information of the network slice 1, for example, including: P-CSCF1, P-CSCF2.
  • the address information of the P-CSCF supporting the network slice 1 acquired by the DNS is: address information of the P-CSCF1, address information of the P-CSCF2, and address information of the P-CSCF3.
  • the information of the P-CSCF is registered and stored in another network element, such as a network function library network element, and the DNS may obtain the P that supports the network slice by using the network function library network element.
  • -CSCF address information may be, for example, a network function repository function (NRF) network element.
  • the NRF network element supports a service discovery function, receives a second network function instance discovery request of the first network function instance, and sends the discovered second network function instance to the first network function instance, the first network function instance and the second network function instance. Can be the same or different.
  • the NRF network element saves the files of the available network function instance and the supported services.
  • the information in the file of a network function instance includes the identifier of the network function instance, the network function type, and the network slice-related identifier (such as S-NSSAI, NSIID). ), the IP address or domain name of the network function, the capability information of the network function, the service supported by the network function, and the endpoint information of the instance of the support service.
  • the network element A requests the NRF network element to query the network element B, and the network function type carried in the request message is B, and may also carry the network slice related identifier, such as S-NSSAI-1, then the NRF network element will be based on this.
  • Two pieces of information query the files of the available network function instances, and the network function instances that meet the query conditions are sent to the network element A, and the returned information may be the IP address of the network function.
  • the following takes the network function library network element as the NRF network element as an example. For example, include the following steps:
  • Step A The DNS sends the information of the network slice to the NRF network element. Accordingly, the NRF network element receives the information of the network slice sent by the DNS.
  • the DNS sends information of the network slice to the NRF network element for requesting acquisition of the P-CSCF supporting the network slice.
  • the DNS may send a request message or a query message to the NRF network element, where the information of the network slice is carried.
  • the format of the information of the network slice sent by the DNS to the NRF network element may be the same as the format of the information of the network slice received by the DNS from the terminal.
  • the format of the information of the network slice sent by the DNS to the NRF network element may be different from the format of the information of the network slice received by the DNS from the terminal, that is, the network slice received by the DNS from the terminal.
  • the format of the information has been modified and then sent to the NRF network element.
  • Step B The NRF network element obtains address information of the P-CSCF supporting the network slice according to the information of the network slice.
  • the information of the P-CSCF is registered and stored on the NRF network element, for example, information including the address information of the P-CSCF and the P-CSCF network slicing capability. Therefore, the NRF network element can locally obtain address information of one or more P-CSCFs supporting the network slice according to the received information of the network slice.
  • Step C The NRF network element sends the address information of the P-CSCF to the DNS, and correspondingly, the DNS receives the address information of the P-CSCF sent by the NRF network element.
  • the NRF network element After acquiring the address information of one or more P-CSCFs supporting the network slice, the NRF network element sends the address information to the DNS, and the address information of a P-CSCF is determined by the DNS or by the terminal.
  • one of the one or more P-CSCFs supporting the network slice may be determined by the NRF network element, and the determined address information of the P-CSCF is sent to the DNS.
  • Step 203 The DNS sends the acquired address information of the P-CSCF to the terminal, and correspondingly, the terminal receives the address information of the P-CSCF sent by the DNS.
  • the DNS After obtaining the address information of one or more P-CSCFs supporting the above network slice, the DNS sends the address information to the terminal, and the terminal determines the address information of a P-CSCF.
  • one of the one or more P-CSCFs supporting the network slice may be determined by the DNS, and the determined address information of the P-CSCF is sent to the terminal.
  • the terminal sends the information of the network slice to the domain name server, requests to obtain the multimedia system entry network element supporting the network slice, and the domain name server returns the multimedia system entry network element supporting the network slice to the terminal.
  • the terminal can connect to the IMS system through the multimedia system entry network element, and the method selects a suitable multimedia system entry network element for the terminal, which is helpful for selecting an appropriate IMS network, thereby achieving correct connection to the IMS.
  • the steps further include:
  • Step 204 The terminal initiates a registration process to the multimedia system according to the address information of the P-CSCF.
  • the terminal wants to initiate the multimedia service A, and according to the network slice selection policy, it is determined that the network slice corresponding to the multimedia service A is the network slice 1, and the terminal sends the information of the network slice 1 to the DNS.
  • the address information of one or more P-CSCFs supporting the network slice 1 is obtained locally or from the network function library network element, for example, the P-CSCF supporting the network slice 1 is : P-CSCF1, P-CSCF2, the DNS sends the address information of P-CSCF1 and the address information of P-CSCF2 to the terminal.
  • a P-CSCF may be selected by the DNS and the selected P may be selected.
  • the address information of the -CSCF is sent to the terminal, for example, the address information of the P-CSCF1 is sent to the terminal, or the address information of the P-CSCF2 is sent to the terminal.
  • the terminal receives the address information of the P-CSCF sent by the DNS, for example, receives the address information of the P-CSCF1 and the address information of the P-CSCF2.
  • the terminal selects one of the address information of the received P-CSCF. For example, if the address information of multiple P-CSCFs is received, the address information of one P-CSCF may be selected from the received address information of multiple P-CSCFs based on the load of the P-CSCF, network capability, and the like. . Of course, if only the address information of one P-CSCF is received, the terminal does not need further selection.
  • the terminal initiates a registration process to the multimedia system according to the address information of the selected P-CSCF.
  • the terminal selects the address information of the P-CSCF2, the terminal initiates a multimedia service to the IMS network 2 in the IMS through the P-CSCF2, and the network slice corresponding to the multimedia service is the network slice 1, the IMS.
  • Network 2 supports at least this network slice 1.
  • the P-CSCF has a corresponding relationship with the IMS network.
  • the P-CSCF and the IMS network may have a one-to-one correspondence.
  • a registration method of a multimedia system entry network element provided by the present application, by which the P-CSCF can be registered to a network function library network element, so that the DNS can select to obtain support from the network function library.
  • the P-CSCF of a network slice takes the network function library network element as the NRF network element as an example. The method includes the following steps:
  • Step 301 The P-CSCF sends the information of the P-CSCF to the NRF network element, and accordingly, the NRF network element receives the information of the P-CSCF sent by the P-CSCF.
  • the P-CSCF sends the P-CSCF information to the NRF network element for requesting registration of the P-CSCF to the NRF network element.
  • the information of the P-CSCF may include address information of the P-CSCF and information of a network slice supported by the P-CSCF.
  • the information of the P-CSCF further includes: an identifier of the P-CSCF, a P-CSCF type, a domain name of the P-CSCF, a capability information of the P-CSCF, a service supported by the P-CSCF, and an endpoint information of an instance of the support service. Some or all of them.
  • the P-CSCF may send a registration request message to the NRF network element, where the registration request message includes information of the P-CSCF.
  • the NRF network element After receiving the information of the P-CSCF, the NRF network element saves the information of the P-CSCF. It can also be understood that the P-CSCF is registered to the NRF network element.
  • Step 302 The NRF network element sends a result indication to the multimedia system ingress network element.
  • the result indication may be registration completion, or registration failure.
  • the result indication of the registration completion is sent to the P-CSCF.
  • a notification message or a registration completion message can be sent to notify registration completion.
  • the NRF network element sends a result indication of registration failure to the P-CSCF.
  • the above method can register the information of the multimedia system entry network element to the network function library network element, so that when the information of the multimedia system entry network element needs to be acquired, the network function library network element can be conveniently managed.
  • FIG. 3A a schematic diagram of a method for selecting a multimedia system entry network element provided by the present application is provided. Includes the following steps:
  • Step 1 The terminal determines a network slice where the accessed IMS network is located.
  • the terminal stores a network slice selection policy (NSSP), and the NSSP includes a correspondence between the application and the network slice. For example, if the network slice corresponding to the application A is X, when the terminal initiates the application A, it determines that the accessed network slice is X.
  • NSSP network slice selection policy
  • Step 2 The terminal establishes an IP connectivity access network (IP-CAN) session through the session management process.
  • IP-CAN IP connectivity access network
  • the session management process might be to create or activate a business data stream.
  • Step 3 The terminal requests the IP address of the DNS through the IP-CAN to the dynamic host configuration protocol (DHCP) server.
  • DHCP dynamic host configuration protocol
  • the DNCP server may be a network element in the IP-CAN, such as a session management function (SMF) network element, or may be a separately deployed server.
  • SMF session management function
  • the terminal can obtain the IP address of one or more DNS from the DHCP server.
  • step 2 - step 3 is an optional step, and an implementation manner of obtaining an IP address of the DNS is provided.
  • the IP address of the DNS may be obtained in other manners. Not limited.
  • Step 4 The terminal selects one of the obtained DNSs and sends a DNS request message to the DNS.
  • the DNS request message includes a P-CSCF type and network slice information (such as single network slice selection assistance information (S-NSSAI)), and the DNS request message is used to request to obtain the network slice that supports the network.
  • P-CSCF single network slice selection assistance information
  • Step 5 The DNS sends a DNS response message to the terminal, where the DNS response message includes information of the P-CSCF obtained by the DNS.
  • the DNS may select one of them, and send the information of the selected P-CSCF to the terminal, or the DNS directly selects information of multiple P-CSCFs (such as the P-CSCF).
  • the IP address is sent to the terminal, and the terminal selects a P-CSCF by itself.
  • the terminal may initiate an IMS registration process. If the selected P-CSCF fails to register, the other P-CSCF may be reselected to try to register again.
  • the terminal when the terminal queries the DNS for the P-CSCF, the information of the selected network slice is sent to the DNS, and the DNS can query the information of the P-CSCF supporting the network slice according to the information of the network slice, so that the query is obtained.
  • the P-CSCF supports network slicing selected by the terminal, thus facilitating successful completion of IMS registration.
  • FIG. 3B a schematic diagram of a method for selecting a multimedia system entry network element provided by the present application is provided. Includes the following steps:
  • Step 1 - Step 4 is the same as Step 1 - Step 4 in the embodiment shown in FIG. 3A, and the foregoing description can be referred to.
  • Step 5 The DNS sends a network element discovery request message to the NRF network element, where the network element discovery request message includes information of a P-CSCF type and a network slice.
  • the DNS After receiving the DNS request message of the terminal, the DNS obtains the information of the P-CSCF type and the network slice, and then the DNS carries the P-CSCF type and the network slice information in the network element discovery request message and sends the information to the NRF network element.
  • the information of one or more P-CSCFs supporting the network slice is returned by the NRF network element.
  • Step 6 The NRF network element sends a network element discovery response message to the DNS, where the network element discovery response message includes information of one or more P-CSCFs.
  • step 7 the DNS sends a DNS response message to the terminal, where the DNS response message includes information of one or more P-CSCFs.
  • step 5 - step 7 in a specific implementation, for example, the following implementation manners are possible:
  • the NRF network element selects one of the NRF network elements, and sends the information of the selected P-CSCF to the DNS, and then sends the information to the terminal by the DNS.
  • the NRF network element obtains information of multiple P-CSCFs
  • the NRF network element sends the acquired information of multiple P-CSCFs to the DNS, and then the DNS selects one and selects the selected P.
  • the information of the CSCF is sent to the terminal.
  • the NRF network element obtains information of multiple P-CSCFs
  • the NRF network element sends the acquired information of multiple P-CSCFs to the DNS, and the DNS will then receive multiple P-s.
  • the information of the CSCF is sent to the terminal, and then the terminal selects one of them.
  • the terminal when the terminal queries the DNS for the P-CSCF, the information of the selected network slice is sent to the DNS, and the DNS returns information of the P-CSCF supporting the network slice to the terminal, so that the P-CSCF obtained by the query is supported.
  • the network slice selected by the terminal thus facilitates successful completion of IMS registration.
  • the DNS obtains information for querying the P-CSCF by requesting an external network element, such as an NRF network element, thereby reducing the load and pressure of the DNS.
  • each of the foregoing network elements includes a hardware structure and/or a software module corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 4 shows a possible exemplary block diagram of still another apparatus involved in the embodiment of the present invention.
  • the apparatus 400 may be in the form of software, may also be a terminal, and may also be For the chip in the terminal.
  • the apparatus 400 includes a processing unit 402 and a communication unit 403.
  • communication unit 403 includes a receiving unit and a transmitting unit.
  • the processing unit 402 is configured to control and manage the actions of the device 400.
  • Communication unit 403 is used to support communication of device 400 with other network entities (e.g., DNS, P-CSCF).
  • the communication unit 403 performs the processing of the terminal and/or the technical solution described in the present application in the method shown in step 201, step 203, step 204, or embodiment 3A, or 3B in FIG. 2A with the support device 400.
  • the device 400 may also include a storage unit 401 for storing program codes and data of the device 400.
  • the processing unit 402 can be a processor or a controller, for example, a general central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), and an application specific integrated circuit. Circuits, ASICs, field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 403 may be a communication interface, a transceiver, a transceiver circuit, or the like.
  • the storage unit 401 can be a memory.
  • the apparatus 400 involved in the embodiment of the present invention may be the terminal shown in FIG. 5.
  • FIG. 5 shows a simplified schematic diagram of one possible design structure of a terminal involved in an embodiment of the present invention.
  • the terminal 500 includes a transmitter 501, a receiver 502, and a processor 503.
  • the processor 503 may also be a controller, and is represented as "controller/processor 503" in FIG.
  • the terminal 500 may further include a modem processor 505, wherein the modem processor 505 may include an encoder 506, a modulator 507, a decoder 508, and a demodulator 509.
  • transmitter 501 conditions (eg, analog transform, filters, amplifies, upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the DNS described in the above embodiments, P-CSCF.
  • the antenna receives the downlink signal.
  • Receiver 502 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 506 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 507 further processes (e.g., symbol maps and modulates) the encoded service data and signaling messages and provides output samples.
  • Demodulator 509 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 508 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal 500.
  • Encoder 506, modulator 507, demodulator 509, and decoder 508 may be implemented by a composite modem processor 505. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the terminal 500 does not include the modem processor 505, the above functions of the modem processor 505 can also be completed by the processor 503.
  • the processor 503 controls and manages the actions of the terminal 500 for performing the processing performed by the terminal 500 in the above embodiment of the present invention.
  • the processor 503 is further configured to perform the process related to the terminal in the method shown in FIG. 2A, FIG. 3A, or FIG. 3B and/or other processes of the technical solution described in the present application.
  • the terminal 500 may further include a memory 504 for storing program codes and data for the terminal 500.
  • FIG. 6 shows a possible exemplary block diagram of a device involved in the embodiment of the present invention.
  • the device 600 may exist in the form of software, may also be a domain name server, and may also be For the chip in the domain name server.
  • the apparatus 600 includes a processing unit 602 and a communication unit 603, and the communication unit 603 may include a receiving unit and a transmitting unit.
  • the processing unit 602 is configured to control and manage the actions of the device 600.
  • Communication unit 603 is used to support communication of device 600 with other network entities, such as terminals.
  • the apparatus 600 may further include a storage unit 601 for storing program codes and data of the apparatus 600.
  • the processing unit 602 can be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 603 can be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name. In a specific implementation, the communication interface can include multiple interfaces, for example, the interface between the domain name server and the terminal can be included. And / or other interfaces.
  • the storage unit 601 can be a memory.
  • Processing unit 602 can support apparatus 600 to perform the actions of the domain name server in the various method examples above, such as support device 600 performing step 202 in FIG. 2A.
  • the communication unit 603 can support communication between the device 600 and the terminal. For example, the communication unit 603 can support the device 600 to perform step 201, step 203 in FIG. 2A.
  • the apparatus 600 involved in the embodiment of the present invention may be the domain name server 700 shown in FIG.
  • the domain name server 700 includes a processor 702, a communication interface 703, and a memory 701.
  • the domain name server 700 can also include a bus 704.
  • the communication interface 703, the processor 702, and the memory 701 may be connected to each other through a bus 704.
  • the bus 704 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (abbreviated industry standard architecture). EISA) bus and so on.
  • the bus 704 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.
  • FIG. 8 shows a possible exemplary block diagram of a device involved in the embodiment of the present invention.
  • the device 800 may exist in the form of software or may be a multimedia system entry network element. It can also be a chip in the multimedia system entry network element.
  • the apparatus 800 includes a processing unit 802 and a communication unit 803, and the communication unit 803 may include a receiving unit and a transmitting unit.
  • the processing unit 802 is configured to control and manage the actions of the device 800.
  • the communication unit 803 is configured to support communication between the device 800 and other network entities (eg, terminals, network function library network elements).
  • the apparatus 800 can also include a storage unit 801 for storing program codes and data of the apparatus 800.
  • the processing unit 802 can be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 803 can be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name.
  • the communication interface can include multiple interfaces, for example, the multimedia system entry network element and the terminal can be included. Interface, interface between the multimedia system entry network element and the network function library network element, and/or other interfaces.
  • the storage unit 801 can be a memory.
  • Processing unit 802 can support apparatus 800 to perform the actions of the multimedia system entry network element in the various method examples above.
  • the communication unit 803 can support communication between the device 800 and the terminal.
  • the communication unit 803 can support the device 800 to perform step 204 in FIG. 2A, step 301-step 302 in FIG. 2B, or FIG. 3A, or FIG. 3B.
  • the method involves a process of multimedia system entry network elements and/or other processes of the technical solutions described herein.
  • the apparatus 800 involved in the embodiment of the present invention may be the multimedia system portal network element 900 shown in FIG.
  • the multimedia system portal network element 900 includes a processor 902, a communication interface 903, and a memory 901.
  • the multimedia system portal network element 900 can also include a bus 904.
  • the communication interface 903, the processor 902, and the memory 901 may be connected to each other through a bus 904; the bus 904 may be a PCI bus or an EISA bus or the like.
  • the bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.
  • FIG. 10 shows a possible exemplary block diagram of a device involved in the embodiment of the present invention.
  • the device 1000 may exist in the form of software or may be a network function library network element. It can also be a chip in the network function library network element.
  • the apparatus 1000 includes a processing unit 1002 and a communication unit 1003, and the communication unit 1003 may include a receiving unit and a transmitting unit.
  • the processing unit 1002 is configured to control and manage the actions of the device 1000.
  • the communication unit 1003 is configured to support communication of the device 1000 with other network entities, such as multimedia system ingress network elements.
  • the device 1000 may further include a storage unit 1001 for storing program codes and data of the device 1000.
  • the processing unit 1002 may be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1003 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is a collective name. In a specific implementation, the communication interface may include multiple interfaces, for example, the network function library network element and the multimedia system portal may be included. Interfaces between network elements, and/or other interfaces.
  • the storage unit 1001 may be a memory.
  • the processing unit 1002 can support the apparatus 1000 to perform the actions of the network function library network elements in the various method examples above.
  • the communication unit 1003 can support communication between the device 1000 and the terminal.
  • the communication unit 1003 can support the device 1000 to perform step 301-step 302 in FIG. 2B, or FIG. 3A, or the method shown in FIG. 3B relates to the network function library network.
  • the apparatus 1000 involved in the embodiment of the present invention may be the network function library network element 1100 shown in FIG.
  • the network function library network element 1100 includes a processor 1102, a communication interface 1103, and a memory 1101.
  • the network function library network element 1100 may further include a bus 1104.
  • the communication interface 1103, the processor 1102, and the memory 1101 may be connected to each other through a bus 1104; the bus 1104 may be a PCI bus or an EISA bus or the like.
  • the bus 1104 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a Solid State Disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a Solid State Disk (SSD)
  • a general purpose processor may be a microprocessor.
  • the general purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • the processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.
  • the steps of the method or algorithm described in the embodiments of the present application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processor such that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium may be disposed in the ASIC, and the ASIC may be disposed in the terminal device. Alternatively, the processor and the storage medium may also be disposed in different components in the terminal device.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention concerne un procédé de sélection d'élément de réseau d'entrée de système multimédia et un procédé d'enregistrement, et un dispositif. Le procédé de sélection comprend les étapes suivantes : un terminal envoie à un serveur de nom de domaine des informations relatives au découpage de réseau et demande d'acquérir un élément de réseau d'entrée de système multimédia prenant en charge le découpage de réseau; et le serveur de nom de domaine renvoie au terminal l'élément de réseau d'entrée de système multimédia prenant en charge le découpage de réseau, de sorte que le terminal peut être connecté à un système IMS par l'intermédiaire de l'élément de réseau d'entrée de système multimédia. Le procédé sélectionne un élément de réseau d'entrée de système multimédia approprié pour le terminal, et aide à sélectionner un réseau IMS approprié de façon à réaliser une connexion correcte à l'IMS.
PCT/CN2019/071738 2018-01-15 2019-01-15 Procédé de sélection d'élément de réseau d'entrée de système multimédia, procédé et dispositif d'enregistrement WO2019137550A1 (fr)

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