WO2020200297A1 - 选择会话管理网元的方法和装置 - Google Patents
选择会话管理网元的方法和装置 Download PDFInfo
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- WO2020200297A1 WO2020200297A1 PCT/CN2020/083074 CN2020083074W WO2020200297A1 WO 2020200297 A1 WO2020200297 A1 WO 2020200297A1 CN 2020083074 W CN2020083074 W CN 2020083074W WO 2020200297 A1 WO2020200297 A1 WO 2020200297A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/147—Signalling methods or messages providing extensions to protocols defined by standardisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/2871—Implementation details of single intermediate entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/289—Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/182—Network node acting on behalf of an other network entity, e.g. proxy
Definitions
- This application relates to the field of communications, and more specifically, to a method and device for selecting a session management network element.
- the service-oriented architecture in 3GGP Release 16 introduces a proxy discovery mode (Delegated Discovery), that is, network elements (network functions) do not perform discovery functions, and service communication proxy (service communication proxy, SCP) performs service discovery.
- a proxy discovery mode Delegated Discovery
- SMF session management functions
- the proxy discovery mode is no longer applicable.
- the AMF needs to select V-SMF (VPLMN SMF) and H-SMF (HPLMN SMF).
- V-SMF V-SMF
- HPLMN SMF H-SMF
- the AMF includes the selected H-SMF information in the request message and sends it to the V-SMF, so that the V-SMF can send the request message to the H-SMF according to the H-SMF selected by the AMF.
- AMF works in proxy discovery mode, because AMF does not choose SMF, AMF cannot fill in the H-SMF information in the request message, so how to choose H-SMF and how to send H-SMF information to V- SMF is a problem to be solved.
- this application provides a method and device for selecting a session management network element.
- the serving communication agent network element sends one or more first SMFs to the mobility management network element to support the home routing mode or the enhanced topology mode SMF selection.
- a method for selecting a session management network element including: a serving communication agent network element receives a first message from a mobility management network element; and the serving communication agent network element obtains the first message according to the first message.
- a parameter information, the first message is used to request the serving communication agent network element to select an SMF according to the first parameter information, and the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the service communication agent network element determines whether there is an SMF that meets the first parameter information; in the case that there is no SMF that meets the first parameter information, the service communication agent network element selects one or the other that supports the DNN Multiple first SMFs, and send a rejection message to the mobility management network element, where the rejection message includes information about the one or more first SMFs. Therefore, the serving communication agent network element sends one or more first SMFs supporting DNN to the mobility management network element, so that the mobility management network element can obtain the information of the one or more first SMFs to perform subsequent operations.
- the method further includes: in a case where there is an SMF that satisfies the first parameter information, the service communication agent network element obtains the first request message according to the first message, and The first request message is sent to the SMF.
- the information of the first one or more first SMFs includes service area information of the one or more first SMF servers, identification information of the one or more first SMFs, and Or one or more of the URIs of the first SMF.
- the method further includes: the service communication agent network element receives a second message from the mobility management network element; the service communication agent network element obtains according to the second message Second parameter information, the second parameter information includes UE location information; the serving communication agent network element selects the second SMF based on the second parameter information; the serving communication agent network element selects the second SMF based on the second parameter information; The second message acquires a second request message, and sends the second request message to the second SMF. Therefore, the serving communication agent network element can receive the second message from the mobility management network element and obtain the second parameter information, thereby selecting the second SMF that satisfies the second parameter information.
- the method further includes: the serving communication agent network element sending the second SMF information to the mobility management network element. Therefore, the serving communication agent network element may send the information of the selected second SMF to the mobility management network element.
- the service communication agent network element may receive a response message from the second SMF, and then send the response message to the mobility management network element, wherein the header or message body of the response message carries all Describe the information of the second SMF.
- the information of the second SMF includes one or more of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF.
- the serving communication agent network element selects one or more first SMFs that support the DNN, and sends a notification to the The mobility management network element sends a rejection message, including: the first parameter information also includes target network element type indication information, and if the target network element type indication information is used to instruct the serving communication agent network element to select SMF, then
- the serving communication agent network element determines that there is no SMF that satisfies the first parameter information
- the serving communication agent network element selects one or more first SMFs that support the DNN, and moves to the The sexual management network element sends the one or more first SMF information. That is, the serving communication agent network element may select one or more first SMFs that support the DNN based on the target network element type indication information, and send a rejection message to the mobility management network element.
- the method further includes: the serving communication agent network element receiving first indication information from the mobility management network element, where the first indication information is used to indicate: the service
- the serving communication agent network element determines that there is no SMF that satisfies the first parameter information
- the serving communication agent network element selects one or more first SMFs that support the DNN, and reports to the mobility management network
- the element sends the information of the one or more first SMFs. That is, the serving communication agent network element may select one or more first SMFs that support the DNN based on the first indication information, and send a rejection message to the mobility management network element.
- the first indication information is used to indicate selection of H-SMF, where H-SMF is an SMF supporting DNN.
- the second request message includes information about the one or more first SMFs.
- the second SMF is a visited session management function V-SMF
- the first SMF is an H-SMF
- the first parameter information further includes the identification HPLMN ID of the home public land mobile network
- the first parameter information is used to discover the home session management function H-SMF
- the rejection message includes one or more H-SMF information.
- the service communication agent network element selecting one or more first SMFs that support the DNN includes:
- the serving communication agent network element selects one or more H-SMFs that support the HPLMN ID and the DNN. Therefore, if there is no SMF that satisfies the UE's location information, HPLMN ID, and DNN at the same time, the serving communication agent network element selects one or more H-SMFs that support the HPLMN ID and the DNN.
- the second SMF is an intermediate session management function I-SMF.
- a method for selecting a session management network element including: a mobility management network element sends a first message to a serving communication agent network element, the first message includes first parameter information, and the first The message is used to request the service communication agent network element to select an SMF according to the first parameter information, obtain a first request message according to the first request message, and send the first request message to the SMF, and
- the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the mobility management network element receives a rejection message from the service communication agent network element, and the rejection message includes the service communication agent selection
- the information of one or more first SMFs supporting the DNN Therefore, the mobility management network element can obtain information about one or more first SMFs to perform subsequent operations.
- the information of the first one or more first SMFs includes service area information of the one or more first SMF servers, identification information of the one or more first SMFs, and Or one or more of the URIs of the first SMF.
- the method further includes: the mobility management network element sends a second message to the service communication agent network element, and the second message includes second parameter information and the one Or one or more third SMFs among multiple first SMFs, the second parameter information is used to discover the second SMF, the second parameter information includes UE location information, and the one or more third SMFs
- the SMF is used to send to the second SMF. Therefore, the mobility management network element may send the second message to the serving communication agent network element, so that the serving communication agent network element can obtain the second parameter information.
- the method further includes: the mobility management network element receiving the second SMF information from the serving communication agent network element. Therefore, the mobility management network element can obtain the information of the second SMF.
- the mobility management network element receives a response message from the service communication agent network element, and the header or message body of the response message carries the second SMF information.
- the information of the second SMF includes one or more of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF.
- the first parameter information further includes target network element type indication information, and the target network element type indication information is used to instruct the serving communication agent network element to select SMF.
- the method further includes:
- the mobility management network element sends first indication information to the serving communication agent network element, where the first indication information is used to indicate: the service communication agent network element determines that there is no one that satisfies the first parameter information In the case of SMF, select one or more first SMFs that support the DNN, and send information about the one or more first SMFs to the mobility management network element.
- the second SMF is a visited session management function V-SMF
- the one or more first SMFs are one or more H-SMFs
- the first parameter information further includes the home public The identification HPLMN ID of the land mobile network
- the first parameter information is used to discover the home session management function H-SMF
- the rejection message includes the one or more H-SMF information.
- the information of the one or more H-SMFs is one or more H-SMFs selected by the serving communication agent network element to support the HPLMN ID and the DNN.
- the second SMF is an intermediate session management function I-SMF.
- a method for selecting a session management network element including: a serving communication agent network element receives a first message from a mobility management network element; the serving communication agent network element obtains the first message according to the first message A parameter information, the first message is used to request the service communication agent network element to select an SMF according to the first parameter information, obtain a first request message according to the first message, and send the first request message
- the first parameter information includes the location information of the user equipment UE and the data network name DNN; the serving communication agent network element determines whether there is an SMF that meets the first parameter information; if there is no SMF that meets the first parameter information, In the case of an SMF with parameter information, the serving communication agent network element sends a rejection message to the mobility management network element, where the rejection message is used to indicate that there is no SMF satisfying the first parameter information. Therefore, the serving communication agent network element sends a rejection message to the mobility management network element, so that the mobility management network element can learn that there is no SMF that
- the method further includes: in a case where there is an SMF that satisfies the first parameter information, the service communication agent network element obtains the first request message according to the first message, and The first request message is sent to the SMF.
- the method further includes:
- the service communication agent network element receives second parameter information from the mobility management network element, where the second parameter information includes the DNN; the service communication agent network element selects one or the second parameter information that supports the second parameter information. Multiple first SMFs, and send a first response message to the mobility management network element, where the first response message includes information about the one or more first SMFs. Therefore, the serving communication agent network element sends one or more first SMFs supporting DNN to the mobility management network element, so that the mobility management network element can obtain the information of the first SMF, so as to perform subsequent operations. In this way, the mobility management network element can send the information of the first SMF to the second SMF. For example, in the enhanced topology mode, the mobility management network element can send I-SMF information to the SMF.
- the information of the first one or more first SMFs includes service area information of the one or more first SMF servers, identification information of the one or more first SMFs, and Or at least one of the URIs of the first SMF.
- the method further includes:
- the serving communication agent network element obtains third parameter information according to the second message, and the third parameter information includes location information of the UE;
- the serving communication agent network element obtains a second request message according to the second message, and sends the second request message to the second SMF.
- the method further includes:
- the serving communication agent network element sends the second SMF information to the mobility management network element.
- the serving communication agent network element selecting one or more first SMFs supporting the DNN and sending a first response message to the mobility management network element includes:
- the second parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to select one or more SMFs that support the DNN, and to report to the mobility management network The element sends the first response message.
- the service communication agent network element may receive a response message from the second SMF, and then send the response message to the mobility management network element, wherein the header or message body of the response message carries all Describe the information of the second SMF.
- the information of the second SMF includes one or more of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF.
- the serving communication agent network element selecting one or more first SMFs supporting the DNN and sending a first response message to the mobility management network element includes:
- the second parameter information also includes first target network element type indication information. If the first target network element type indication information is used to indicate SMF, the serving communication agent network element selects one or the other that supports the DNN. Multiple first SMFs, and send the first response message to the mobility management network element.
- the serving communication agent network element selecting one or more first SMFs supporting the DNN and sending a first response message to the mobility management network element includes:
- the second parameter information also includes first indication information, and the first indication information is used to indicate that the serving communication agent network element selects one or more first SMFs that support the DNN and moves to the The sexual management network element sends the first response message.
- the selection of the second SMF by the serving communication agent network element based on the third parameter information includes:
- the third parameter information also includes second target network element type indication information, and the second target network element type indication information is used to indicate an intermediate SMF.
- the second SMF is an intermediate session management function I-SMF.
- a method for selecting a session management network element which includes: the mobility management network element sends a first message to the serving communication agent network element, the first message includes first parameter information, and the first The message is used to request the service communication agent network element to select an SMF according to the first parameter information, obtain a first request message according to the first request message, and send the first request message to the SMF, and
- the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the mobility management network element receives a rejection message from the serving communication agent network element, and the rejection message is used to indicate that there is no SMF of the first parameter information. Therefore, the mobility management network element can learn that there is no SMF that meets the first parameter information, so as to perform subsequent operations.
- the method further includes: the mobility management network element sends second parameter information to the service communication agent network element, and the second parameter information includes the DNN;
- the sexual management network element receives a first response message from the service communication agent network element, where the first response message includes information about the one or more first SMFs.
- the method further includes: the mobility management network element sends a second message to the service communication agent network element, the second message includes third parameter information, and the third The parameter information includes location information of the UE, and the third parameter information is used to select the second SMF.
- the method further includes: the mobility management network element receiving the second SMF information from the serving communication agent network element.
- the mobility management network element may receive a response message from the service communication agent network element, where the response message is sent to the service communication agent network element by the second SMF, wherein the header of the response message or The message body carries the information of the second SMF.
- the information of the second SMF includes one or more of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF.
- the second parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to select one or more SMFs that support the DNN, and to inform the The mobility management network element sends the first response message.
- the second parameter information further includes first target network element type indication information, and the first target network element type indication information is used to instruct the serving communication agent network element to select SMF.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select an intermediate SMF.
- the second SMF is an intermediate session management function I-SMF.
- a method for selecting a session management network element including: a serving communication agent network element receives a first message from a mobility management network element; and the serving communication agent network element obtains the first message according to the first message.
- a parameter information, the first message is used to request the serving communication agent network element to discover the H-SMF according to the first parameter information, and the first parameter information includes the identity of the home public land mobile network HPLMN ID and The data network name is DNN; the serving communication agent network element selects one or more H-SMFs that satisfy the first parameter information, and sends a first response message to the mobility management network element, the first response message Including the one or more H-SMF information.
- the service communication agent network element sends one or more H-SMFs supporting HPLMN ID and DNN to the mobility management network element, so that the mobility management network element can obtain H-SMF information, thereby Perform subsequent operations.
- the mobility management network element can send the received H-SMF information to the V-SMF.
- the method further includes:
- the serving communication agent network element obtains second parameter information according to the second message, where the second parameter information includes location information of the UE;
- the service communication agent network element selects a V-SMF according to the second parameter information
- the service communication agent network element obtains a second request message according to the second message, and sends the second request message to the V-SMF.
- the method further includes:
- the serving communication agent network element sends the V-SMF information to the mobility management network element.
- the service communication agent network element may receive a response message from the V-SMF, and then send the response message to the mobility management network element, wherein the header or message body of the response message carries all Describe the information of V-SMF.
- the V-SMF information includes one or more of the service area information of the V-SMF server, the identification information of the V-SMF, and the URI of the V-SMF.
- the method further includes:
- the service communication agent network element receives first indication information from the mobility management network element, and the first parameter information further includes first indication information, and the first indication information is used to indicate the service communication agent
- the network element returns a response message to the mobility management network element after discovering the H-SMF.
- the serving communication agent network element selecting one or more H-SMFs that satisfy the first parameter information, and sending a first response message to the mobility management network element includes:
- the first parameter information also includes first target network element type indication information, and the first target network element type indication information is used to indicate H-SMF or SMF, then the serving communication agent network element selects to support the HPLMN ID and one or more H-SMFs of the DNN, and send the first response message to the mobility management network element.
- the serving communication agent network element selects a V-SMF supporting the location information of the UE based on the second parameter information, including:
- the second parameter information also includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF.
- a method for selecting a session management network element which includes: the mobility management network element sends a first message to a serving communication agent network element, the first message includes first parameter information, and the first The message is used to request the serving communication agent network element to discover the H-SMF according to the first parameter information, and the first parameter information includes the identification HPLMN ID of the home public land mobile network and the data network name DNN; mobility management The network element receives a first response message from the service communication agent network element, where the first response message includes information about the one or more H-SMFs. Therefore, in the home routing mode, the mobility management network element can obtain H-SMF information to perform subsequent operations. For example, the mobility management network element can send the received H-SMF information to the V-SMF.
- the method further includes:
- the mobility management network element sends a second message to the serving communication agent network element, where the second message includes second parameter information, and the second parameter information is used to discover the V-SMF, and the second parameter
- the information includes location information of the UE.
- the method further includes:
- the mobility management network element receives the V-SMF information from the service communication agent network element.
- the mobility management network element may receive a response message from the service communication agent network element, where the response message is sent to the service communication agent network element by V-SMF, and the header of the response message
- V-SMF information is carried in the part or message body.
- the V-SMF information includes one or more of the service area information of the V-SMF server, the identification information of the V-SMF, and the URI of the V-SMF.
- the method further includes:
- the first parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to reply a response message to the mobility management network element after discovering the H-SMF.
- the first parameter information further includes first target network element type indication information, and the first target network element type indication information is used to instruct the serving communication agent network element to select H-SMF or SMF.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF.
- a method for selecting a session management network element including: a serving communication agent network element receives a first message from a mobility management network element; and the serving communication agent network element obtains the first message according to the first message.
- One parameter information, the first parameter information includes the location information of the user equipment UE and the data network name DNN; the serving communication agent network element determines whether there is an SMF that meets the first parameter information; In the case of SMF with parameter information, the serving communication agent network element selects one or more first SMFs according to the DNN, and selects a second SMF according to the location information of the UE.
- the serving communication agent network element can determine by itself whether the session needs to select two SMFs at the same time, so that when the mobility management network element works in the agent discovery mode, it still supports the creation of a session that includes two SMFs, so that the mobility management network element is not affected.
- the application scenarios of working in the agent discovery mode are restricted.
- the method further includes:
- the serving communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or more fourth of the one or more first SMFs.
- SMF information ;
- the serving communication agent network element sends a second request message to the second SMF.
- the method further includes:
- the serving communication agent network element sends the information of the fifth SMF and the information of the second SMF to the mobility management network element, where the fifth SMF is the second SMF in the one or The selected SMF among the fourth SMFs.
- the information of the second SMF includes at least one of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF;
- the SMF information includes one or more of the service area information of the fifth SMF server, the identification information of the fifth SMF, and the URI of the fifth SMF.
- the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or included in the message body of the first response message.
- the method further includes:
- the sending of the fifth SMF information by the serving communication agent network element to the mobility management network element further includes:
- the service communication agent network element obtains the information of the fifth SMF according to the URI information of the fifth SMF in the first response message;
- the serving communication agent network element sends the information of the fifth SMF to the mobility management network element.
- the service communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or one of the one or more first SMFs.
- Information about multiple fourth SMFs including:
- the information of the one or more fourth SMFs is included in the header of the second request message or included in the message body of the second request message.
- the first SMF is SMF
- the second SMF is I-SMF
- the first SMF is H-SMF
- the second SMF is V-SMF.
- a method for selecting a session management network element which includes: a mobility management network element sending a first message to a serving communication agent network element, the first message including first parameter information, the first The parameter information includes the location information of the user equipment UE and the data network name DNN; the mobility management network element receives the fifth SMF information and the second SMF information from the serving communication agent network element. Therefore, the mobility management network element can obtain the two SMFs determined by the service communication agent network element, so that when the mobility management network element works in the agent discovery mode, it still supports the creation of a session that includes two SMFs, so as not to the mobility management network. Meta-work is restricted in the application scenarios of agent discovery mode.
- the mobility management network element receives fifth SMF information and second SMF information from the serving communication agent network element, including:
- the mobility management network element receives a first response message from the serving communication agent network element, where the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or include In the message body of the first response message.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- a method for selecting a session management network element including: a serving communication agent network element receives a first message from a mobility management network element; and the serving communication agent network element obtains the first message according to the first message.
- a parameter information, the first message is used to request the service communication agent network element to discover the SMF according to the first parameter information, the first parameter information includes the data network name DNN; the service communication agent network element selects One or more SMFs satisfying the first parameter information, and sending a first response message to the mobility management network element, where the first response message includes information about the one or more SMFs.
- the serving communication agent network element sends one or more SMFs that support DNN to the mobility management network element, so that the mobility management network element can obtain SMF information and perform subsequent operations.
- the mobility management network element can The received SMF information determines whether an intermediate session management network element I-SMF needs to be selected.
- the method further includes:
- the serving communication agent network element obtains second parameter information according to the second message, where the second parameter information includes location information of the UE;
- the service communication agent network element selects an I-SMF according to the second parameter information
- the service communication agent network element obtains a second request message according to the second message, and sends the second request message to the I-SMF.
- the method further includes:
- the serving communication agent network element sends the I-SMF information to the mobility management network element.
- the service communication agent network element may receive a response message from the I-SMF, and then send the response message to the mobility management network element, wherein the header or message body of the response message carries all Describe the I-SMF information.
- the I-SMF information includes one or more of the service area information of the I-SMF server, the identification information of the I-SMF, and the URI of the I-SMF.
- the method further includes:
- the service communication agent network element receives first indication information from the mobility management network element, and the first parameter information further includes the first indication information, and the first indication information is used to indicate the service
- the communication agent network element replies a response message to the mobility management network element after discovering the SMF.
- the service communication agent network element selecting one or more SMFs that satisfy the first parameter information, and sending a first response message to the mobility management network element includes:
- the first parameter information also includes first target network element type indication information, and the first target network element type indication information is used to indicate H-SMF or SMF, then the serving communication agent network element selects to support the DNN One or more H-SMFs or SMFs, and send the first response message to the mobility management network element.
- the serving communication agent network element selecting the I-SMF supporting the location information of the UE based on the second parameter information includes:
- the second parameter information also includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select I-SMF or V-SMF, then the The serving communication agent network element selects I-SMF or V-SMF that supports the location information of the UE.
- a method for selecting a session management network element which includes: the mobility management network element sends a first message to the serving communication agent network element, the first message includes first parameter information, and the first The message is used to request the service communication agent network element to discover the SMF according to the first parameter information, and the first parameter information includes the data network name DNN; the mobility management network element receives the first information from the service communication agent network element A response message, where the first response message includes information about the one or more SMFs. Therefore, the mobility management network element can obtain SMF information to perform subsequent operations. For example, the mobility management network element can determine whether an intermediate session management network element I-SMF needs to be selected according to the SMF information.
- the method further includes:
- the mobility management network element sends a second message to the serving communication agent network element, where the second message includes second parameter information, and the second parameter information is used to discover I-SMF, and the second parameter
- the information includes location information of the UE.
- the method further includes:
- the mobility management network element Before the mobility management network element sends the second message to the serving communication agent network element, the mobility management network element determines whether there is an SMF that supports the location information of the UE according to the information of the SMF. The SMF of the location information of the UE, the mobility management network element determines that the I-SMF needs to be selected.
- the method further includes:
- the mobility management network element receives the I-SMF information from the service communication agent network element.
- the mobility management network element may receive a response message from the service communication agent network element, where the response message is sent by I-SMF to the service communication agent network element, wherein the header of the response message
- the section or message body carries the I-SMF information.
- the I-SMF information includes one or more of the service area information of the I-SMF server, the identification information of the I-SMF, and the URI of the I-SMF.
- the method further includes:
- the first parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to reply a response message to the mobility management network element after discovering the H-SMF or SMF.
- the first parameter information further includes first target network element type indication information, and the first target network element type indication information is used to indicate H-SMF or SMF, and is used to indicate the service communication agent network After finding the H-SMF or SMF, the element replies a response message to the mobility management network element.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF.
- a method for selecting a session management network element which includes: a serving communication agent network element receives a first message from a mobility management network element; and the serving communication agent network element obtains according to the first message First parameter information and second parameter information, the first parameter information is used to select the first SMF, the second parameter information is used to select the second SMF; the service communication agent network element is based on the first parameter information One or more first SMFs are selected, and a second SMF is selected according to the second parameter information.
- the service communication agent network element can determine that the first SMF and the second SMF need to be selected at the same time according to the first parameter information and the second parameter information, thereby simplifying the logic of the service communication agent, so that the service communication agent does not need to understand business-related logic.
- the method further includes:
- the serving communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or more fourth of the one or more first SMFs.
- SMF information ;
- the serving communication agent network element sends a second request message to the second SMF.
- the method further includes:
- the first message includes indication information, the indication information is used to instruct the service communication agent to include the first SMF information in the second request message, or the indication information is used to indicate the service communication
- the proxy network element sends the second request message to the second SMF.
- the method further includes:
- the indication information is included in the first parameter information, the indication information is a first network element type indication, and the first network element type indication is used to instruct the serving communication agent network element to select H-SMF or SMF, then Determining, by the serving communication agent network element, that the second request message includes the information of the first SMF;
- the indication information is included in the second parameter information, the indication information is a second network element type indication, and the second network element type indication is used to instruct the serving communication agent network element to select V-SMF or I -SMF, the serving communication agent network element determines to send the second request message to the second SMF.
- the method further includes:
- the serving communication agent network element sends the information of the fifth SMF and the information of the second SMF to the mobility management network element, where the fifth SMF is the second SMF in the one or The selected SMF among the fourth SMFs.
- the information of the second SMF includes at least one of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF;
- the SMF information includes one or more of the service area information of the fifth SMF server, the identification information of the fifth SMF, and the URI of the fifth SMF.
- the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or included in the message body of the first response message.
- the method further includes:
- the sending of the fifth SMF information by the serving communication agent network element to the mobility management network element further includes:
- the service communication agent network element obtains the information of the fifth SMF according to the URI information of the fifth SMF in the first response message;
- the serving communication agent network element sends the information of the fifth SMF to the mobility management network element.
- the service communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or one of the one or more first SMFs.
- Information about multiple fourth SMFs including:
- the information of the one or more fourth SMFs is included in the header of the second request message or included in the message body of the second request message.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- a method for selecting a session management network element including: the mobility management network element sends a first message to a serving communication agent network element, the first message including first parameter information and second parameter information Information, the first parameter information is used to select a first SMF, the second parameter information is used to select a second SMF; the mobility management network element receives information about the fifth SMF from the serving communication agent network element And the second SMF information. Therefore, the mobility management network element can obtain the two SMFs determined by the service communication agent network element, so that when the mobility management network element works in the agent discovery mode, it still supports the creation of a session that includes two SMFs, so as not to the mobility management network. Meta-work is restricted in the application scenarios of agent discovery mode.
- the mobility management network element determines whether the second SMF needs to be selected.
- the mobility management network element before the mobility management network element sends the first message to the serving communication agent network element, the mobility management network element requests the serving communication agent network element to select the SMF of the UE and the DNN at the same time. If the SMF supporting the location information of the UE and the DNN exists, the mobility management network element determines that the first SMF and the second SMF need to be selected.
- the mobility management network element receives fifth SMF information and second SMF information from the serving communication agent network element, including:
- the mobility management network element receives a first response message from the serving communication agent network element, where the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or include In the message body of the first response message.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- a communication device is provided.
- the communication device is a service communication agent network element (such as an SCP entity), or a chip or a circuit, used to implement any of the above aspects or any possible implementation of any aspect
- the method in the method is executed by the service communication agent network element.
- the communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software.
- the communication device includes a module for executing any of the foregoing aspects or the method executed by the service communication agent network element in any possible implementation manner of any aspect.
- the communication device includes: a processor and a memory; the memory is used to store instructions, and when the communication device is running, the processor executes the instructions stored in the memory, so that the communication device executes the foregoing A method executed by a service communication agent network element in any aspect or any possible implementation of any aspect.
- the memory can be integrated in the processor or independent of the processor.
- the communication device includes a processor, which is configured to be coupled with a memory, read instructions in the memory, and execute any of the foregoing aspects or any possible implementation manner of any aspect according to the instructions The method executed by the service communication agent network element.
- a communication device is provided.
- the communication device is a mobility management network element (such as an AMF entity), or a chip or a circuit, which is used to implement any of the above aspects or any possible implementation of any aspect.
- the method in the method is executed by the mobility management network element.
- the communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software.
- the communication device includes a module for executing any of the foregoing aspects or a method executed by a mobility management network element in any possible implementation manner of any aspect.
- the communication device includes: a processor and a memory; the memory is used to store instructions, and when the communication device is running, the processor executes the instructions stored in the memory, so that the communication device executes the foregoing A method executed by a mobility management network element in any aspect or any possible implementation of any aspect.
- the memory can be integrated in the processor or independent of the processor.
- the communication device includes a processor, which is configured to be coupled with a memory, read instructions in the memory, and execute any of the foregoing aspects or any possible implementation manner of any aspect according to the instructions In the method executed by the mobility management network element.
- a communication device in a fifteenth aspect, includes a processor, a memory, and a transceiver.
- the processor is connected to the memory and the transceiver.
- the memory is used to store instructions
- the processor is used to execute the instructions
- the transceiver is used to communicate with other network elements under the control of the processor.
- a computer-readable storage medium stores a program that enables a communication device to execute any of the above-mentioned aspects and any of its various implementation modes to select session management The method of the network element.
- the present application also provides a computer program product containing instructions that, when run on a computer, causes the computer to execute any one of the above-mentioned methods for selecting a session management network element.
- the present application also provides a system that includes a service communication agent network element, and the service communication agent network element can be used to perform the first aspect and any one of the methods in the first aspect described by the service communication agent Steps performed by the network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to execute the second aspect and any of the methods of the second aspect described above. A step of.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- the present application also provides a system, the system includes a service communication agent network element, the service communication agent network element can be used to perform the third aspect and any method of the third aspect described by the service communication agent Steps performed by the network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to execute any of the above-mentioned fourth aspect and the fourth aspect. A step of.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- the present application also provides a system, the system includes a service communication agent network element, the service communication agent network element can be used to perform any of the above fifth aspect and the fifth aspect of the method by the service communication agent Steps performed by the network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to execute the sixth aspect and any one of the methods of the sixth aspect described above. A step of.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- the present application also provides a system, the system includes a service communication agent network element, the service communication agent network element can be used to perform the seventh aspect and any method of the seventh aspect described by the service communication Steps performed by the agent network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to execute any of the eighth aspect and the eighth aspect described above. A step of.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- the present application also provides a system, the system includes a service communication agent network element, and the service communication agent network element can be used to perform the service communication in any of the ninth aspect and the ninth aspect. Steps performed by the agent network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to perform any of the tenth aspect and any one of the tenth aspects. A step of.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- the present application also provides a system, the system includes a service communication agent network element, the service communication agent network element can be used to perform the eleventh aspect and any of the eleventh aspects The steps performed by the service communication agent network element.
- the system may further include a mobility management network element, and the mobility management network element may be used to perform the twelfth aspect and any of the methods in the twelfth aspect described by the mobility management network. Meta steps to perform.
- the system may also include other devices that interact with one or more of the service communication agent network element and the mobility management network element in the solution provided in the embodiments of the present application, and so on.
- a communication chip in which instructions are stored, when running on a communication device, the communication chip is caused to execute any of the above aspects or the method in any possible implementation of any aspect .
- Fig. 1 is an example diagram of a system architecture to which an embodiment of the present application is applied.
- Fig. 2 is a schematic interaction diagram of a method for selecting a session management network element according to an embodiment of the present application.
- Fig. 3 is another schematic interaction diagram of a method for selecting a session management network element according to an embodiment of the present application.
- Fig. 4 is a schematic interaction diagram of a method for selecting a session management network element according to another embodiment of the present application.
- Fig. 5 is another schematic interaction diagram of a method for selecting a session management network element according to another embodiment of the present application.
- Fig. 6 is a schematic interaction diagram of a method for selecting a session management network element according to still another embodiment of the present application.
- Fig. 7 is a schematic interaction diagram of a method for selecting a session management network element according to another embodiment of the present application.
- Fig. 8 is a schematic interaction diagram of a method for selecting a session management network element according to another embodiment of the present application.
- Fig. 9 is a possible exemplary block diagram of a device involved in an embodiment of the present application.
- Fig. 10 is a schematic structural diagram of an apparatus for selecting a session management network element according to an embodiment of the present application.
- Fig. 11 is a possible exemplary block diagram of another device involved in an embodiment of the present application.
- Fig. 12 is a schematic structural diagram of another apparatus for selecting a session management network element according to an embodiment of the present application.
- multiple can be understood as “at least two”; “multiple” can be understood as “at least two”.
- GSM global system for mobile communications
- CDMA code division multiple access
- WCDMA broadband code division multiple access
- GPRS general packet radio service
- LTE long term evolution
- FDD frequency division duplex
- TDD LTE Time division duplex
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- Computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CDs), digital versatile discs (digital versatile discs, DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
- magnetic storage devices for example, hard disks, floppy disks, or tapes, etc.
- optical disks for example, compact discs (CDs), digital versatile discs (digital versatile discs, DVDs) Etc.
- smart cards and flash memory devices for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.
- various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
- the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
- the UE in the embodiments of the present application may refer to a terminal (terminal), an access terminal, a terminal in V2X communication, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, and a terminal device , Wireless communication equipment, user agent or user device.
- the terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, V2X devices (for example, on-board units (OBU) in vehicles or vehicles), wearable devices, and terminals in the future 5G network A device or a terminal device in a public land mobile network (PLMN) that will evolve in the future, and the embodiment of the present application is not limited thereto.
- SIP session initiation protocol
- WLL wireless local loop
- PDA personal digital assistant
- a wireless communication function Handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices, V2X devices (for example, on-board units (OBU) in vehicles or vehicles), wearable devices, and terminals in the future 5G network
- OBU on-board units
- PLMN public
- Session management network elements are mainly used for session management in mobile networks, such as session creation, modification, and release, including tunnel maintenance between UPF and AN), UPF selection and control, SSC (service and session continuity, service and session) Continuity) session-related functions such as mode selection and roaming. Specific functions include, for example, allocating internet protocol (IP) addresses for users, selecting user plane network elements that provide message forwarding functions, and so on.
- IP internet protocol
- the session management network element may be a session management function (SMF) network element.
- SMF session management function
- future communications such as 6G, the session management network element may still be an SMF network element or have other names. This application does not Make a limit.
- the communication agent network element is mainly used to support the message forwarding function between network elements and the service discovery function.
- the communication proxy network element may be a service communication proxy (SCP) network element.
- SCP service communication proxy
- the communication proxy network element may still be an SCP network element or have other names. This application does not Make a limit.
- the mobility management network element mainly includes the following functions: connection management, mobility management, registration management, access authentication and authorization, reachability management, security context management and other access and mobility-related functions.
- mobility management network elements can be access and mobility management function (AMF) network elements.
- AMF mobility management function
- future communications such as 6G, mobility management network elements can be AMF network elements, or other The name of this application is not limited.
- Policy control network element which includes user subscription data management function, policy control function, charging policy control function, policy control provision and acquisition of policy decision-related contract information from UDR and other policy-related functions, quality of service , QoS) control, etc.
- the policy control network element can be a policy control function (PCF) network element.
- PCF policy control function
- future communications such as 6G, the policy control network element can still be a PCF network element or have other names. This application does not Make a limit.
- the authentication server network element is mainly used to use the extensible authentication protocol (EAP) to verify service functions, store keys, and authenticate server functions, interact with UDM to obtain user information, and perform authentication-related functions, such as generating Intermediate keys, etc., to achieve user authentication and authentication.
- EAP extensible authentication protocol
- the authentication server network element can be an authentication server function (authentication server function, AUSF) network element.
- AUSF authentication server function
- future communications such as 6G
- the user plane network element can still be an AUSF network element or have other names. This application does not Make a limit.
- the data management network element is mainly used to store user data, such as contract information, authentication/authorization information.
- the data management network element can be a unified data management (UDM) network element.
- UDM unified data management
- future communications such as 6G
- the data management network element can still be a UDM network element or have other names.
- Unified data manager mainly includes the following functions: unified data management, support for 3GPP authentication and key negotiation mechanism for authentication credential processing, user identity processing, access authorization, registration and mobility management, contract management , SMS management, etc.
- User plane network elements are mainly used for user plane service processing, such as service routing, packet forwarding, anchoring functions, quality of service (QoS) mapping and execution, uplink identification and routing to the data network, Downlink packet buffer and downlink data arrival notification trigger, connection with external data network, etc.
- user plane network elements can be user plane function (UPF) network elements.
- UPF user plane function
- future communications such as 6G
- user plane network elements can still be UPF network elements or have other names. This application does not Make a limit.
- Access network equipment which may also be referred to as radio access network (RAN) equipment, is a type of equipment that provides wireless communication functions for terminal equipment.
- Access network equipment includes, but is not limited to: next-generation base stations (gnodeB, gNB) in 5G, evolved node B (evolved node B, eNB), radio network controller (RNC), node B (node B) B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center, etc.
- gnodeB, gNB next-generation base stations
- eNB evolved node B
- RNC radio network controller
- node B node B
- BSC base station controller
- BTS base transceiver station
- home base station for example, home evolved nodeB,
- UE User equipment
- UE is a device with wireless transceiver function. It can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water (such as ships); it can also be deployed on In the air (such as airplanes, balloons, satellites, etc.).
- the terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, and an industrial control (industrial control)
- DN Network Data Network
- operators services such as operator services, Internet access services, and third-party services.
- third-party services such as operator services, Internet access services, and third-party services.
- the network exposure function mainly includes the following functions: safe and open services and capabilities provided by the 3GPP network function, which are internally open or open to third parties, etc.; transform or translate the information interacted with AF and internal network functions Interactive information, such as AF service ID and internal 5G core network information such as DNN, S-NSSAI, etc.
- the network function storage function (NF repository function, NRF) mainly includes the following functions: a service discovery function, maintenance of available network function (NF) instances of NF text and the services they support.
- Application functions mainly include the following functions: interacting with the 3GPP core network to provide services or services, including interaction with NEF, interaction with policy architecture, and so on.
- the network slice selection function mainly includes the following functions: selecting a set of network slice instances for the UE, determining the allowed NSSAI, and determining the AMF set that can serve the UE.
- network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (for example, a cloud platform).
- the above functions can be divided into one or more services, and further, there may be services independent of network functions.
- an instance of the above-mentioned function, or an instance of a service included in the above-mentioned function, or an instance of a service that exists independently of the network function may be referred to as a service instance.
- the foregoing network element or function may be implemented by one device, or jointly implemented by multiple devices, or may be a functional module in one device, which is not specifically limited in the embodiment of the present application.
- Fig. 1 is an example diagram of a system architecture to which an embodiment of the present application is applied.
- the network elements in the system architecture include control plane functions and user plane network functions (such as UPF, etc.).
- the control plane functions communicate through service-oriented interfaces.
- the interface between the control plane function and the access network or UPF is a non-service interface.
- the control plane network function may include AMF, SMF, policy control function (PCF), UDM, authentication server function (Authentication Server Function, AUSF), etc.
- the system architecture specifically includes authentication server functions AUSF, AMF, SMF, service communication proxy (SCP), NSSF, NEF, NRF, PCF, UDM, AF, UPF, DN, RAN, user Equipment (user equipment, UE).
- the control plane functions communicate with each other through the following service interfaces: the servicing interface provided by NSSF can be Nnssf, the servicing interface provided by NEF can be Nnef, the servicing interface provided by NRF can be Nnrf, and the servicing interface provided by AMF.
- the interface can be Namf; the service interface provided by SMF can be Nsmf; the service interface provided by UDM can be Nudm, and the service interface provided by AF can be Naf; the service interface provided by PCF can be Npcf, and AUSF can provide external services.
- the service-oriented interface of can be Nausf; the interface between the control plane function and RAN and UPF is a non-service-oriented interface.
- the 5G system architecture in the 23501 standard please refer to the 5G system architecture in the 23501 standard.
- the AMF is connected to the RAN through the N2 interface, and to the UE through the N1 interface.
- SMF and UPF are connected through the N4 interface.
- RAN and UPF are connected through the N3 interface.
- UPF and DN are connected through the N6 interface.
- SCP is used to transfer messages between control plane network elements in the indirect communication mode, and to support the discovery of network elements and network functions.
- each network element such as SCP, AMF, SMF, etc.
- the aforementioned network elements may also have other names, which are not specifically limited in the embodiment of the present application.
- some or all of the above-mentioned network elements may use the terminology in 5G, or may be named in other ways, etc., which will be uniformly explained here and will not be repeated here.
- the various embodiments described below can be applied to other scenarios where the proxy discovery mode needs to be adopted and two network elements need to be discovered at the same time, for example, the proxy discovery mode is used to select H-PCF and V-PCF.
- Fig. 2 shows a schematic interaction diagram of a method 200 for selecting a session management network element according to an embodiment of the present application.
- the method on the service communication agent network element side can be executed by the service communication agent network element (such as SCP) or the chip (or module) in the service communication agent network element, and the method on the mobility management network element side can be managed by mobility Network element (such as AMF) or a chip (or module) in a mobility management network element is executed.
- the method 200 includes:
- the mobility management network element sends a first message to the serving communication agent network element.
- the service communication agent network element receives the first message.
- the first message may be a first request message
- the first parameter information may be carried in the header of the first request message, or may also be located in the message body of the first request message , There is no restriction on this.
- S220 The service communication agent network element obtains the first parameter information according to the first message.
- the first message is used to request the service communication agent network element to select an SMF according to the first parameter information (and obtain a first request message according to the first message, and send the first request message to the SMF ).
- the first request message may be used to request to create a session.
- the mobility management network element receives the session creation request message of the UE, and needs to send the session creation request message to the SMF so that the SMF can create a session for the UE.
- the mobility management network element generates the first request message based on the session creation request message from the UE, and determines the parameters for selecting the SMF. If working in the agent discovery mode, the mobility management network element may send the first request message and the parameters for selecting SMF to the serving communication agent network element together.
- the first parameter information includes the location information of the UE and the data network name DNN.
- the logical formula of the first parameter information is: UE location & DNN.
- the first parameter information may also include network slice information, such as S-NSSAI.
- network slice information such as S-NSSAI.
- the logical formula of the first parameter information is: UE location&DNN&S-NSSAI.
- the service communication agent network element determines whether there is an SMF that satisfies the first parameter information.
- the serving communication agent network element may query the NRF to determine whether there is an SMF satisfying both the location information of the UE and the DNN.
- the serving communication agent network element selects one or more first SMFs that support the DNN, and sends a rejection to the mobility management network element Message, the rejection message includes the one or more first SMF information.
- the serving communication agent network element selects the SMF list (such as one or more first SMFs) that supports the DNN, and then combines one or more The information of the first SMF is carried in the list and sent to the mobility management network element.
- the one or more first SMF information includes one or more of the following information: the identification of the first SMF (for example, the instance identification (ID)), the endpoint address of the first SMF, the first SMF SMF service area information.
- the serving communication agent network element may execute the foregoing step S240 based on the target network element type indication information or the first indication information.
- the first parameter information may also include target network element type indication information. If the target network element indication information is used to instruct the serving communication agent network element to select SMF, then the service communication agent network element In a case where it is determined that there is no SMF that meets the first parameter information, the serving communication agent network element selects one or more first SMFs that support the DNN, and sends the mobility management network element to the One or more first SMF information.
- the serving communication agent network element receives first indication information from the mobility management network element, where the first indication information is used to indicate that the service communication agent network element determines that there is no
- the serving communication agent network element selects one or more first SMFs that support the DNN, and sends the one or more first SMFs to the mobility management network element One SMF information. If the serving communication agent network element receives the first indication information, it selects the SMF list (such as one or more first SMFs) that supports the DNN if it does not find that the location information of the UE and the SMF of the DNN are satisfied at the same time , And then send one or more first SMF information to the mobility management network element.
- the SMF list such as one or more first SMFs
- the first indication information is also used to indicate: only when the SMF selected by the serving communication agent network element satisfies both the location information of the UE and the DNN, the serving communication agent network element Send the first request message to the SMF. Therefore, even if the serving communication agent network element selects the SMF (such as one or more first SMFs) that supports the DNN, the SMF selected by the serving communication agent network element does not support the location information of the UE, therefore, The service communication agent network element does not send the first request message to the SMF either.
- the SMF such as one or more first SMFs
- the first indication information may be carried in the first parameter information.
- the first parameter information sent by the mobility management network element to the service communication agent network element includes a description of the logical relationship between the first parameters, for example,
- the logical relationship is described as: (DNN AND UE location information) OR (DNN), this logical relationship indicates that the serving communication agent network element selects both DNN and UE location information SMF, or choose an SMF that meets DNN.
- the service communication agent network element obtains the SMF network element satisfying the logical relationship according to the logical relationship.
- the serving communication agent network element sends one or more first SMFs supporting DNN to the mobility management network element, so that the mobility management network element can obtain the information of the first SMF, thereby performing subsequent steps. operating.
- the mobility management network element can send the information of the first SMF to the second SMF.
- the mobility management network element can send the received H-SMF information to the V-SMF; in the enhanced topology mode, the mobility management network element can send the I-SMF information to the SMF .
- the method for selecting a session management network element in the embodiment of the present application is applicable.
- the mobility management network element determines that a second SMF (such as the second SMF) needs to be selected. Can be I-SMF).
- the mobility management network element may regenerate parameter information, that is, second parameter information, and the second parameter information is used to discover the second SMF.
- the method 200 further includes:
- the mobility management network element sends a second message to the service communication agent network element.
- the serving communication agent network element receives a second message from the mobility management network element.
- the second message includes second parameter information and one or more third SMFs of the one or more first SMFs, and the second parameter information includes location information of the UE, and One or more third SMFs are used to send to the second SMF.
- the serving communication agent network element obtains second parameter information according to the second message, where the second parameter information includes location information of the UE.
- the second parameter information does not carry the DNN, but carries the location information of the UE, so as to facilitate the selection of the second SMF.
- the HPLMN ID is not carried in the second parameter information.
- the second message may be understood as a second request message, and the second parameter information may be carried in the header of the second request message, or located in the message body of the second request message, There is no restriction on this.
- the second request message may include information about one or more first SMFs among the one or more first SMFs.
- the information of the first SMF is included in the message body of the second request message.
- the serving communication agent network element selects the second SMF based on the second parameter information.
- the serving communication agent network element uses the second parameter information (including the location information of the UE) to perform a discovery process and selects the second SMF that supports the location information of the UE. It should be understood that the discovery process performed by the service communication agent network element can refer to the description in the existing protocol, and for the sake of brevity, details are not described here.
- the second parameter information includes network element type information, and the network element type information is used to instruct the serving communication agent network element to select an intermediate SMF.
- the service communication agent network element obtains a second request message according to the second message, and sends the second request message to the second SMF.
- the serving communication agent network element finds a second SMF that satisfies the location information of the UE, it sends the second request message to the selected second SMF. Specifically, the serving communication agent network element needs to replace the host name in the second request message sent by the mobility management network element with the address or FQDN corresponding to the selected second SMF.
- the second SMF may perform operations related to the second request message. For example, if the second request message is used to create a session, the second SMF creates a session resource for the second request message. If the second request message includes the information of the specified SMF, the second SMF can also be used with the specified SMF. The SMF interacts to establish the session on the specified SMF.
- the session processing process between the second SMF and the designated SMF can refer to the description in the prior art, and for the sake of brevity, details are not described here.
- the second SMF may send a successful execution message (such as a successful session establishment message), that is, a response message, to the mobility management network element.
- a successful execution message such as a successful session establishment message
- the second SMF may first send the response message to the service communication agent network element, so that the service communication agent network element forwards it to the mobility management network element.
- the response message may carry the information of the second SMF.
- the method 200 further includes: the serving communication agent network element sending the second SMF information to the mobility management network element.
- the serving communication agent network element may carry the information of the second SMF in the response message, and send the information of the second SMF to the mobility through the response message.
- the second SMF information may be included in the header of the response message or the message body of the response message, which is not limited in the embodiment of the present application.
- the information of the second SMF includes at least service area information of the second SMF.
- the information of the second SMF may also include identification information of the second SMF, such as an intermediate SMF (intermediate SMF, I-SMF) instance identifier.
- I-SMF intermediate SMF
- the identification information of the second SMF may also be used by the mobility management network element to send to the target mobility management network element, so that the current mobility management network element can obtain the service of the second SMF according to the identification information of the second SMF Area information, so that the target mobility management network element decides whether to choose to replace the existing SMF with the second SMF.
- the mobility management network element may send the service area information of the second SMF to the target mobility management network element, so that the target mobility management The network element decides whether to choose to replace the existing SMF with the second SMF according to the service area information of the second SMF.
- the first SMF can be H-SMF
- the second SMF is V- SMF
- the first SMF is SMF
- the second SMF is I-SMF
- the first parameter information also includes the identification HPLMN ID of the home public land mobile network, and the first parameter information is used to discover the home session
- the management function H-SMF the rejection message includes one or more H-SMF information.
- the serving communication agent network element can determine whether there is an SMF that simultaneously satisfies: the location information of the UE, the DNN, and the HPLMN ID. If there is no SMF that satisfies the UE's location information, DNN, and HPLMN ID at the same time, the serving communication agent network element may select one or more H-SMFs that support the HPLMN ID and the DNN.
- FIG. 4 shows a schematic interaction diagram of a method 300 for selecting SMF according to another embodiment of the present application.
- the method on the service communication agent network element side can be executed by the service communication agent network element (such as SCP) or the chip (or module) in the service communication agent network element, and the method on the mobility management network element side can be managed by mobility Network element (such as AMF) or a chip (or module) in a mobility management network element is executed.
- the method 300 includes:
- the mobility management network element sends a first message to the serving communication agent network element.
- the service communication agent network element receives the first message.
- the explanation of the first message can refer to the description of the first message in the method 200, for the sake of brevity, details are not repeated here.
- the service communication agent network element obtains the first parameter information according to the first message, where the first message is used to request the service communication agent network element to select SMF according to the first parameter information, Obtain a first request message according to the first message, and send the first request message to the SMF.
- the explanation of the first message or the explanation of the first parameter information can refer to the description of the first message in the method 200, and for the sake of brevity, details are not described here.
- the service communication agent network element determines whether there is an SMF that satisfies the first parameter information.
- steps S310-S330 can refer to the description of step S210-step S230 in the method 200, which will not be repeated here.
- the serving communication agent network element sends a rejection message to the mobility management network element, where the rejection message is used to indicate that there is no SMF that satisfies the first parameter information.
- SMF of a parameter information In the case that there is no SMF that satisfies the first parameter information, the serving communication agent network element sends a rejection message to the mobility management network element, where the rejection message is used to indicate that there is no SMF that satisfies the first parameter information. SMF of a parameter information.
- the serving communication agent network element If the serving communication agent network element does not find the SMF that satisfies the location information of the UE and the DNN at the same time, it sends a rejection message to the mobility management network element to inform the mobility management network element that there is no SMF that meets the first parameter information.
- the rejection message may carry a reason value, and the reason value is used to indicate to the mobility management network element that the serving communication agent network element does not find an SMF that meets the first parameter information.
- the rejection message here does not include one or more first SMFs that support DNN selected by the serving communication agent network element.
- the serving communication agent network element may store the location information of the DNN and the UE.
- the mobility management network element After receiving the rejection message, the mobility management network element determines that two SMFs need to be selected according to the reason value of the rejection message, for example, I-SMF and SMF.
- the serving communication agent network element receives second parameter information from the mobility management network element, where the second parameter information includes the DNN.
- the second parameter information includes DNN.
- the service communication agent network element selects the SMF based on the DNN.
- the service communication agent network element selects one or more first SMFs that support the second parameter information, and sends a first response message to the mobility management network element, where the first response message includes the one Or multiple first SMF information.
- the serving communication agent network element selects one or more first SMFs that support the second parameter information, then the information of the one or more first SMFs is sent to the mobility management network element.
- the description in the method 200 For brevity, details are not repeated here.
- the serving communication agent network element may execute the foregoing step S360 based on the target network element type indication information or the first indication information.
- the second parameter information may also include first target network element type indication information. If the first target network element indication information is used to instruct the service communication agent network element to select SMF, then the service The communication agent network element selects one or more first SMFs that support the DNN, and sends the first response message to the mobility management network element. That is, the serving communication agent network element does not send a message from the mobility management network element to the first SMF.
- the second parameter information further includes first indication information
- the first indication information is used to instruct the serving communication agent network element to select one or more first SMFs that support the DNN, and to The mobility management network element sends the first response message. If the serving communication agent network element receives the first indication information, the serving communication agent network element selects one or more first SMFs that support the DNN, does not send a request message to the first SMF, and sends a message to the mobile The sexual management network element sends the one or more first SMFs. That is, the service communication agent network element does not send a message to the selected first SMF.
- the serving communication agent network element sends one or more first SMFs supporting DNN to the mobility management network element, so that the mobility management network element can obtain the information of the first SMF, thereby performing subsequent steps. operating.
- the mobility management network element can send the information of the first SMF to the second SMF.
- the mobility management network element can send I-SMF information to the SMF.
- the method 300 further includes:
- the mobility management network element sends a second message to the service communication agent network element.
- the serving communication agent network element receives a second message from the mobility management network element.
- the second message includes third parameter information.
- the service communication agent network element obtains the third parameter information according to the second message.
- the third parameter information includes location information of the UE.
- the third parameter information does not carry the DNN, but carries the location information of the UE, so as to facilitate the selection of the second SMF.
- the second message may be understood as a second request message, and the third parameter information may be carried in the header of the second request message, or located in the message body of the second request message, There is no restriction on this.
- the second request message may include information about one or more first SMFs among the one or more first SMFs.
- the serving communication agent network element selects the second SMF based on the third parameter information.
- the serving communication agent network element uses the third parameter information (including the location information of the UE) to perform a discovery process and selects the second SMF that supports the location information of the UE. It should be understood that the discovery process performed by the service communication agent network element can refer to the description in the existing protocol, and for the sake of brevity, details are not described here.
- the third parameter information may also include second target network element type indication information, and the second target network element type indication information is used to indicate an intermediate SMF (ie, I-SMF).
- an SMF that meets the network element type indicated by the second target network element type indication information is also selected, That is, the intermediate SMF that supports UE location information is selected.
- the service communication agent network element obtains a second request message according to the second message, and sends the second request message to the second SMF.
- the serving communication agent network element finds a second SMF that supports the location information of the UE, it sends the second request message to the selected second SMF. Specifically, the serving communication agent network element needs to replace the host name in the second request message sent by the mobility management network element with the address or FQDN corresponding to the selected second SMF.
- the subsequent operations of the second SMF receiving the second request message can refer to the description in the method 200, and for the sake of brevity, details are not described here.
- the method 300 further includes: S392.
- the serving communication agent network element sends the second SMF information to the mobility management network element.
- the serving communication agent network element may carry the information of the second SMF in the response message, and send the information of the second SMF to the mobility through the response message.
- Manage network elements may carry the information of the second SMF in the response message, and send the information of the second SMF to the mobility through the response message.
- the information of the second SMF includes at least service area information of the second SMF.
- the information of the second SMF may also include identification information of the second SMF, such as an I-SMF instance identifier.
- FIG. 6 shows a schematic interaction diagram of a method 400 for selecting an SMF according to still another embodiment of the present application.
- Method 400 supports the selection of SMF in the home routing mode, and also supports the scenario where two SMFs need to be selected in the non-home routing mode.
- the method on the service communication agent network element side can be executed by the service communication agent network element (such as SCP) or the chip (or module) in the service communication agent network element, and the method on the mobility management network element side can be implemented by mobility management.
- Network element such as AMF
- the method 400 includes:
- the mobility management network element sends a first message to the serving communication agent network element.
- the service communication agent network element receives the first message.
- the mobility management network element After the mobility management network element receives the session establishment request sent by the UE, it determines that the session uses the home routing mode, that is, the session needs to include H-SMF and V-SMF. Specifically, the mobility management network element may determine that the session adopts the home routing mode according to the subscription information or other information of the UE. Among them, the specific process for the mobility management network element to determine that the session adopts the home routing mode can refer to the description in the prior art, and for the sake of brevity, it is not repeated here.
- the explanation of the first message can refer to the description of the first message in the method 200, for the sake of brevity, details are not repeated here.
- the mobility management network element may first send a first message to the serving communication agent network element for selecting SMF.
- the service communication agent network element obtains the first parameter information according to the first message, where the first message is used to request the service communication agent network element to discover the H-SMF according to the first parameter information
- the first parameter information includes the identification HPLMN ID of the home public land mobile network and the data network name DNN.
- HPLMN ID refers to the PLMN ID of the PLMN where the H-SMF is located.
- the HPLMN ID is not included in the first parameter, and the first parameter information includes other parameters for selecting SMF except for the location information of the UE, the serving communication agent network element One parameter information finds SMF.
- the first message may be a first request message
- the first parameter information may be carried in the header of the first request message, or may also be located in the message body of the first request message , There is no restriction on this.
- the serving communication agent network element selects one or more H-SMFs that satisfy the first parameter information, and sends a first response message to the mobility management network element, where the first response message includes the One or more H-SMF information.
- the service communication agent network element can transfer the discovered one or more H-SMFs
- the H-SMF or SMF information is sent to the mobility management network element.
- the serving communication agent network element may perform the foregoing step S430 based on the target network element type indication information or the first indication information.
- the first parameter information may also include first target network element type indication information, if the first target network element indication information is used to instruct the serving communication agent network element to select H-SMF or SMF, Then the service communication agent network element selects one or more H-SMFs that support the HPLMN ID and the DNN or selects one or more SMFs that support the DNN, and sends all the H-SMFs to the mobility management network element. Describe one or more H-SMF or SMF information.
- the serving communication agent network element receives first indication information from the mobility management network element, where the first indication information is used to indicate that the service communication agent network element is discovering H-SMF Or reply a response message to the mobility management network element after SMF. If the serving communication agent network element receives the first indication information, it finds one or more H-SMFs that satisfy both the HPLMN ID and the DNN or finds one or more SMFs that support the DNN , Sending a first response message to the mobility management network element, that is, sending the one or more H-SMF or SMF information to the mobility management network element.
- the first indication information is further used to indicate that the serving communication agent network element does not send the first request message to the selected H-SMF or SMF.
- the first indication information may be home routing indication information.
- the first indication information may be carried in the first parameter information.
- the service communication agent network element sends one or more H-SMFs supporting HPLMN ID and DNN to the mobility management network element, so that the mobility management network element can obtain H-SMF information, thereby Perform subsequent operations.
- the mobility management network element can send the received H-SMF information to the V-SMF.
- the service communication agent network element sends one or more SMFs that support DNN to the mobility management network element.
- the mobility management network element can obtain SMF information to perform subsequent operations, for example,
- the mobility management network element can determine whether to select an I-SMF according to the received SMF information.
- the method 400 further includes:
- the mobility management network element sends a second message to the service communication agent network element.
- the serving communication agent network element receives a second message from the mobility management network element.
- the serving communication agent network element obtains second parameter information according to the second message, where the second parameter information includes location information of the UE.
- the second message may be understood as a second request message, and the second parameter information may be carried in the header of the second request message, or located in the message body of the second request message, There is no restriction on this.
- the serving communication agent network element selects V-SMF or I-SMF according to the second parameter information.
- the serving communication agent network element selects a V-SMF that supports the location information of the UE based on the second parameter information.
- the serving communication agent network element may query the NRF to obtain the V-SMF or I-SMF that meets the second parameter information.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF or I-SMF .
- the serving communication agent network element obtains the second target network element type indication information, when selecting the SMF that supports the UE location information, it must also select the V- which meets the network element type indicated by the second target network element type indication information.
- SMF or I-SMF that is, select V-SMF or I-SMF that supports UE location information.
- the serving communication agent network element determines that the second request message needs to be sent to the selected V-SMF or I-SMF according to the second target network element type indication information.
- S470 The service communication agent network element obtains a second request message according to the second message, and sends the second request message to the V-SMF or I-SMF.
- the serving communication agent network element finds a V-SMF or I-SMF that supports the location information of the UE, it sends the second request message to the selected V-SMF or I-SMF. Specifically, the serving communication agent network element needs to replace the host name in the second request message sent by the mobility management network element with the address or FQDN corresponding to the selected V-SMF or I-SMF.
- the V-SMF or I-SMF may perform operations related to the second request message. For example, if the second request message is used to create a session, then V-SMF or I-SMF creates a session resource for the second request message. If the second request message includes information about the specified SMF, then V-SMF or I-SMF can also interact with a designated SMF (such as H-SMF) to establish the session on the designated SMF.
- a designated SMF such as H-SMF
- the session processing process between the V-SMF or I-SMF and the designated SMF can refer to the description in the prior art, and for the sake of brevity, it will not be repeated here.
- a successful execution message (such as a successful session establishment message), that is, a response message, may be sent to the mobility management Network element.
- the V-SMF or I-SMF may first send the response message to the service communication agent network element, so that the service communication agent network element can forward it to the mobility management network element.
- the V-SMF or I-SMF may carry the information of the V-SMF or I-SMF in the response message; or, optionally, the serving communication agent network element is in the mobility management network When the meta forwards the response message, it can carry V-SMF or I-SMF information in the response message.
- the V-SMF or I-SMF information may be carried in the header of the response message, or in the message body of the response message, which is not limited in the embodiment of the present application.
- the method 400 further includes: the serving communication agent network element sending the V-SMF or I-SMF information to the mobility management network element.
- the service communication agent network element may carry the V-SMF or I-SMF information in the response message, and use the response message to transfer the first 2.
- the SMF information is sent to the mobility management network element.
- the V-SMF or I-SMF information includes at least V-SMF or I-SMF service area information, so that after the UE moves, the mobility management network element is based on the V-SMF or I-SMF
- the service area information and the location information of the UE determine whether it is necessary to reselect V-SMF or I-SMF.
- the second SMF information may also include V-SMF or I-SMF identification information, such as I-SMF instance identification.
- the identification information of the V-SMF or I-SMF can also be used by the mobility management network element to send to the target mobility management network element, so that the current mobility management network element is based on the V-SMF or I-SMF
- the identification information acquires the service area information of the V-SMF or I-SMF, so that the target mobility management network element decides whether to select a new V-SMF or I-SMF to replace the existing V-SMF or I-SMF.
- the mobility management network element may send the service area information of the V-SMF or I-SMF to the target mobility management network Element, so that the target mobility management network element decides whether to choose to replace the existing V-SMF or I-SMF with the new SMF according to the service area information of the V-SMF or I-SMF.
- FIG. 7 shows a schematic interaction diagram of a method 500 for selecting an SMF according to another embodiment of the present application.
- the serving communication agent network element can select the first SMF and the second SMF by itself. Support the selection of SMF in home routing mode.
- the agent network element (such as SCP) or the chip (or module) in the service communication agent network element is executed, and the method on the mobility management network element side can be performed by the mobility management network element (such as AMF) or the chip ( Or module) execution.
- the method 500 includes:
- the mobility management network element sends a first message to the serving communication agent network element.
- the service communication agent network element receives the first message.
- the serving communication agent network element obtains first parameter information according to the first message, where the first parameter information includes location information of the user equipment UE and a data network name DNN.
- the first message includes a first request message
- the first parameter information is carried in a header of the first request message or a message body of the first request message, which is not limited.
- the serving communication agent network element may set the location information of the UE as optional, select one or more SMFs that support DNN, and then determine whether to support the location information of the UE according to the selected one or more SMFs, If there is no SMF supporting UE location information among the one or more SMFs, the second SMF is selected; or, optionally, the serving communication agent network element may generate a certain logical formula according to the UE location information and DNN, so as to Logically select one or more SMFs that satisfy both UE location information and DNN, or, when there are no SMFs that satisfy both UE location information and DNN, select one or more SMFs that satisfy DNN and a second SMF that supports UE location information .
- the service communication agent network element determines whether there is an SMF that satisfies the first parameter information.
- the serving communication agent network element can determine whether there is an SMF that satisfies the location information of the UE and the DNN at the same time.
- the serving communication agent network element selects one or more first SMFs according to the DNN, and selects a second SMF according to the location information of the UE .
- the serving communication agent network element selects one or more first SMFs that support the DNN, and selects the second SMF that supports the location information of the UE.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- the serving communication agent network element can determine by itself whether the session needs to select two SMFs at the same time, so that when the mobility management network element works in the agent discovery mode, it still supports the creation of a session including two SMFs. Therefore, the application scenarios of mobility management network elements working in the agent discovery mode are not restricted.
- the method 500 further includes:
- the service communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or more of the selected one or more first SMFs. Information about the fourth SMF.
- the serving communication agent network element may fill one or more fourth SMF information into the first request message to generate a second request message, that is, the serving communication agent network element needs to modify the first request message sent by the mobility management network element.
- the message body of the request message For example, when the first request message sent by the mobility management network element is an Nsmf_PDUSession_CreateSMContext request, the service communication agent network element inserts one or more fourth SMF information in the message body of the message, so that the second SMF can be based on one or more The information of the fourth SMF selects a fifth SMF to send the message to complete the session establishment.
- the service communication agent network element may not modify the message body of the first request message, but add one or more fourth SMF information to the message header of the first request message to obtain the second request message, That is, the message header of the second request message carries one or more fourth SMF information.
- the second SMF needs to additionally read the message header of the second request message when processing the session, so as to obtain information about the fifth SMF (the fifth SMF is the SMF of one or more fourth SMFs).
- the serving communication agent network element sends a second request message to the second SMF.
- the second request message includes information about one or more fourth SMFs.
- the serving communication agent network element may select one or more fourth SMFs from the one or more first SMFs and combine The information of the one or more fourth SMFs is sent to the second SMF, so that the second SMF selects one of the one or more fourth SMFs to serve the session.
- the second SMF sends a first response message to the serving communication agent network element.
- the service communication agent network element receives the first response message from the second SMF.
- the second SMF may send a successful execution message (such as a successful session establishment message), that is, the first response message, to the mobility management network element .
- a successful execution message such as a successful session establishment message
- the second SMF may first send the first response message to the service communication agent network element, so that the service communication agent network element can forward it to the mobility management network element.
- the serving communication agent network element may obtain the information of the fifth SMF in the first response message.
- the fifth SMF is the SMF selected by the second SMF to serve the session according to one or more fourth SMF information in the second request message.
- the first response message includes uniform resource identifier (URI) information of the fifth SMF.
- the service communication agent network element can obtain the address information of the fifth SMF (such as IP address or fully qualified domain name (FQDN) (or called the full domain name)) according to the URI information of the fifth SMF, and then according to the fifth SMF
- the address information determines the SMF corresponding to the session. For example, the service communication agent network element compares the address information of the fifth SMF obtained from the first response message with the address information of the SMF in the configuration file of selecting one or more first SMFs according to the DNN in step S540 If it matches, the SMF described in the SMF configuration file is the SMF corresponding to the session.
- the SCP sends the service area information of the fifth SMF in the configuration file to the AMF.
- the serving communication agent network element sends the first response message, the fifth SMF information, and the second SMF information to the mobility management network element, where the fifth SMF is the one Or the SMF in the first SMF.
- the information of the fifth SMF and the information of the second SMF may be carried in the header or the message body of the response message, which is not limited in this embodiment.
- the information of the second SMF includes at least service area information of the second SMF.
- the information of the second SMF may also include identification information of the second SMF, such as an I-SMF instance identifier.
- the information of the fifth SMF includes at least service area information of the fifth SMF.
- the information of the fifth SMF may also include identification information of the fifth SMF, such as an SMF instance identifier.
- the first response message includes the URI information of the fifth SMF, where the URI information of the fifth SMF is used by the mobility management network element to determine the information of the fifth SMF.
- the mobility management network element may obtain the service area information of the fifth SMF according to the URI information.
- the mobility management network element may send a request message to the service communication agent network element, and send the URI information of the fifth SMF or the address information in the URI information of the fifth SMF to the service communication agent network element. 5.
- the address information in the URI information of the SMF acquires the configuration file of the fifth SMF or the service area information of the fifth SMF.
- the service communication agent network element needs to provide a service-oriented interface so that the mobility management network element can call the service-oriented interface to obtain the service area information of the fifth SMF.
- the mobility management network element may obtain the configuration file of the fifth SMF from the NRF according to the address information in the URI information of the fifth SMF. Accordingly, the NRF needs to support the ability to query the SMF according to the URI of the SMF.
- FIG. 8 shows a schematic interaction diagram of a method 1200 for selecting an SMF according to another embodiment of the present application.
- the serving communication agent network element may directly select the first SMF and the second SMF according to the parameters specified by the mobility management network element.
- the first SMF is H-SMF
- the second SMF corresponds to V-SMF.
- the method on the service communication agent network element side is executed by the agent network element (such as SCP) or the chip (or module) in the service communication agent network element, and the method on the mobility management network element side can be performed by the mobility management network element (such as AMF) or The chip (or module) in the mobility management network element executes.
- the method 1200 includes:
- S1210 The mobility management network element sends a first message to the serving communication agent network element.
- the service communication agent network element receives the first message.
- S1220 The service communication agent network element obtains first parameter information and second parameter information according to the first message.
- the mobility management network element classifies the parameters for selecting the first SMF and the parameters for selecting the second SMF in the first message, so that the SCP can directly select the first SMF according to the parameters for selecting the first SMF.
- the parameters of the second SMF directly select the second SMF.
- the first parameter information is used to select the first SMF
- the second parameter information is used to select the second SMF.
- the service communication agent network element can be directly selected according to two sets of parameters. In this way, the service communication agent network element does not need the judgment logic of method 500 in order to determine whether there is an SMF that satisfies all the parameters at the same time. If there is no SMF, then the first SMF and the second SMF are selected, thereby simplifying the logic of the service communication agent , So that the service communication agent does not need to understand business-related logic.
- the mobility management network element specifies that the service communication agent network element selects the first SMF and the second SMF, and specifies the parameters for selecting the first SMF and the parameters for selecting the second SMF.
- the first SMF is H-SMF
- the first parameter information includes: network element type indication, HPLMN ID and DNN information, etc.
- the second SMF is V-SMF
- the second parameter information includes: network element type indication, Optional UE location information, etc.
- the first parameter information includes: network element type indication and DNN information
- the second SMF is I-SMF
- the second parameter information includes: network element type indication and UE location information, etc.
- the mobility management network element indicates which set of parameters is used to select the second SMF (that is, the target SMF for which the serving communication agent network element sends the second request message) or which set of parameters is used to select the first SMF.
- the serving communication agent network element can put the selected first SMF into the first request message to generate a second request message according to the instruction, and send the second request message to the second SMF.
- the mobility management network element can use the network element type to indicate which set of parameters is used to select the second SMF or which set of parameters is used to select the first SMF, for example, in a home routing scenario, when The network element type indication is used to instruct the service communication agent network element to select V-SMF or I-SMF, this set of parameters is used to select the second SMF, when the network element type is used to indicate that the service communication agent network element is selected as In the case of H-SMF or SMF, this set of parameters is used to select the first SMF.
- the mobility management network element determines whether the second SMF needs to be selected. In one implementation, before triggering this procedure, the mobility management network element first requests the serving communication agent network element to select an SMF that supports both the UE's location information and DNN. If there is no such thing as the same support for the UE's location information and DNN If the SMF is selected, the mobility management network element determines that the first SMF and the second SMF need to be selected.
- the mobility management network element sends an Xth message to the serving communication agent network element, the Xth message includes the Yth parameter, and the Yth parameter includes: the network element type (the network element type is SMF), UE location information, and If the DNN and SCP determine that there is no SMF that supports both the location information of the UE and the DNN, the SCP sends a rejection message to the mobility management network element, indicating that the mobility management network element fails to select the SMF that supports both the location information of the UE and the DNN. .
- the service communication agent network element selects the first SMF and the second SMF.
- the serving communication agent network element directly selects one or more first SMFs according to the first parameter information, and selects the second SMFs according to the second parameter information.
- the method 1200 further includes:
- the service communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one of the selected one or more first SMF information Or multiple fourth SMF information.
- the service communication agent network element may fill one or more fourth SMF information among the one or more first SMF information into the first request message to generate a second request message, that is, the service communication agent network element
- the message body of the first request message sent by the mobility management network element needs to be modified.
- the serving communication agent network element inserts information about one or more fourth SMFs among one or more first SMFs in the message body of the message, In this way, the second SMF can select a fifth SMF among the one or more fourth SMFs to send a message according to the information of one or more fourth SMFs in the one or more first SMFs, and complete the session establishment.
- the service communication agent network element may not modify the message body of the first request message, but add one or more fourth SMFs of the one or more first SMFs to the message header of the first request message.
- the information of the second request message is obtained, that is, the message header of the second request message carries the information of one or more fourth SMFs among the one or more first SMFs.
- the second SMF needs to additionally read the message header of the second request message when processing the session in order to obtain the fifth SMF (the fifth SMF is one or more SMFs in the fourth SMF among the one or more first SMFs )Information.
- the service communication agent network element sends a second request message to the second SMF.
- the second request message includes information about one or more fourth SMFs among the one or more first SMFs.
- the second SMF may select one of the one or more fourth SMFs among the one or more first SMFs to serve the session.
- the second SMF sends a first response message to the service communication agent network element.
- the service communication agent network element receives the first response message from the second SMF.
- the second SMF may send a successful execution message (such as a successful session establishment message), that is, the first response message, to the mobility management network element .
- a successful execution message such as a successful session establishment message
- the second SMF sends the second SMF information to the mobility management network element in the first response message, and the first response message also includes the fifth SMF information.
- the information of the second SMF includes service area information of the second SMF.
- the information of the second SMF may also include identification information of the second SMF, such as an I-SMF instance identifier.
- the information of the fifth SMF includes service area information of the fifth SMF.
- the information of the fifth SMF may also include identification information of the fifth SMF, such as an SMF instance identifier.
- the mobility management network element may obtain the service area information of the SMF according to the identification information of the SMF.
- the serving communication agent network element after receiving the first response message, sends the area information of the second SMF and the fifth SMF to the mobility management network element.
- the service communication agent network element can obtain the address information of the fifth SMF (such as an IP address or a fully qualified domain name (FQDN) (or called a fully qualified domain name)) according to the URI information of the fifth SMF in the first response message , And then determine the SMF corresponding to the session according to the address information of the fifth SMF.
- FQDN fully qualified domain name
- the service communication agent network element compares the address information of the fifth SMF obtained from the first response message with the address information of the SMF in the configuration file of selecting one or more first SMFs according to the DNN in step S540 If it matches, the SMF described in the SMF configuration file is the SMF corresponding to the session.
- the SCP sends the service area information of the fifth SMF in the configuration file to the AMF.
- the serving communication agent network element after receiving the first response message, sends the second SMF information to the mobility management network element.
- the information of the fifth SMF is included in the first response message by the second SMF.
- the information of the second SMF and the fifth SMF may be the identification of the SMF, and the mobility management network element may obtain the service area information of the SMF according to the identification information of the SMF.
- the serving communication agent network element sends the first response message to the mobility management network element.
- the serving communication agent network element may send the information of the second SMF and the information of the fifth SMF to the mobility management network element.
- the information of the second SMF includes service area information of the second SMF.
- the information of the second SMF may also include identification information of the second SMF, such as an I-SMF instance identifier.
- the information of the fifth SMF includes service area information of the fifth SMF.
- the information of the fifth SMF may also include identification information of the fifth SMF, such as an SMF instance identifier.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- FIG. 9 shows a possible exemplary block diagram of a device involved in an embodiment of the present application.
- the device 800 may exist in the form of software, may also be a service communication agent network element, or may be a service communication agent network element. In the chip.
- the device 800 includes a transceiver module 810 and a processing module 820.
- the transceiver module 810 may include a receiving unit and a sending unit.
- the processing module 820 is used to control and manage the actions of the device 800.
- the transceiver module 810 is used to support the communication between the device 800 and other network entities (such as session control function entities, etc.).
- the device 800 may further include a storage unit for storing program codes and data of the device 800.
- each module in the device 800 may be implemented by software.
- the processing module 820 may be a processor or a controller, for example, a general-purpose central processing unit (central processing unit, CPU), a general-purpose processor, a digital signal processing (digital signal processing, DSP), and an application specific integrated circuit (application-specific integrated circuit).
- a general-purpose central processing unit central processing unit, CPU
- a general-purpose processor digital signal processing (digital signal processing, DSP)
- an application specific integrated circuit application-specific integrated circuit
- the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
- the transceiver module 810 may be a communication interface, a transceiver, or a transceiver circuit, etc., where the communication interface is a general term.
- the communication interface may include multiple interfaces, for example, may include: a service communication agent network element and a CSCF network element Between the interface, and/or other interfaces.
- the storage unit may be a memory.
- the processing module 820 can support the device 800 to perform the actions of the service communication agent network element in the above method examples. For example, it can support the device 800 to perform steps 220 and 230 in FIG. 2, steps 260 and 270 in FIG. 3, steps 320 and 330 in FIG. Steps 320, 330, 380, and 390 in 5, steps 420, 450, and 460 in FIG. 6, and steps 520, 530, and 540 in FIG. 7.
- the transceiver module 810 can support the communication between the device 800 and the mobility management network element, SMF (such as V-SMF or I-SMF).
- SMF mobility management network element
- the transceiver module 810 can support the device 800 to perform step 210 and step 240 in FIG. 2.
- it can be as follows:
- the device 800 includes:
- the transceiver module 810 is configured to receive the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information according to the first message, where the first message is used to request the service communication agent network element to select an SMF according to the first parameter information, and the first parameter information It includes the location information of the user equipment UE and the data network name DNN;
- the processing module 820 is further configured to determine whether there is an SMF that satisfies the first parameter information; if there is no SMF that satisfies the first parameter information, to select one or more DNNs that support the DNN First SMF, and call the transceiver module 810 to send a rejection message to the mobility management network element, where the rejection message includes information about the one or more first SMFs.
- the transceiver module 810 is further configured to:
- the processing module 820 is further configured to obtain second parameter information according to the second message, where the second parameter information includes location information of the UE;
- the processing module 820 is further configured to select the second SMF based on the second parameter information
- the processing module 820 is further configured to obtain a second request message according to the second message, and call the transceiver module 810 to send the second request message to the second SMF.
- the transceiver module 810 is further configured to: send the second SMF information to the mobility management network element.
- the processing module 820 is configured to select one or more first SMFs that support the DNN, and call the SMF that meets the first parameter information.
- the transceiver module 810 sends a rejection message to the mobility management network element, which specifically includes:
- the first parameter information also includes target network element type indication information. If the target network element type indication information is used to instruct the serving communication agent network element to select SMF, it is determined that there is no information that satisfies the first parameter information. In the case of SMF, select one or more first SMFs that support the DNN, and call the transceiver module 810 to send the one or more first SMF information to the mobility management network element.
- the transceiver module 810 is further configured to receive first indication information from the mobility management network element, where the first indication information is used to indicate: In the case of satisfying the SMF of the first parameter information, select one or more first SMFs supporting the DNN, and send information of the one or more first SMFs to the mobility management network element.
- the second request message includes information about the one or more first SMFs.
- the second SMF is a visited session management function V-SMF
- the first SMF is an H-SMF
- the first parameter information further includes the identification HPLMN ID of the home public land mobile network
- the first parameter information is used to discover the home session management function H-SMF
- the rejection message includes one or more H-SMF information.
- the processing module 820 is configured to select one or more first SMFs that support the DNN when there is no SMF that meets the first parameter information, which specifically includes:
- one or more H-SMFs that support the HPLMN ID and the DNN are selected.
- the second SMF is an intermediate session management function I-SMF.
- the device 800 may correspond to the method of serving a communication agent network element in the foregoing method embodiment, for example, the method in FIG. 2 or FIG. 3, and the foregoing and other management of each module in the device 800
- the operations and/or functions are used to implement the corresponding steps of the method for serving the communication agent network element in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 800 includes:
- the transceiver module 810 is configured to receive the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information according to the first message, and the first message is used to request the service communication agent network element to select an SMF according to the first parameter information, and according to the first parameter information.
- the message acquires a first request message, and sends the first request message to the SMF, and the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the processing module 820 is further configured to determine whether there is an SMF that meets the first parameter information
- the processing module 820 is further configured to call the transceiver module 810 to send a rejection message to the mobility management network element, where the rejection message is used to indicate no There is an SMF satisfying the first parameter information;
- the transceiver module 810 is further configured to receive second parameter information from the mobility management network element, where the second parameter information includes the DNN;
- the processing module 820 is further configured to select one or more first SMFs that support the second parameter information, and call the transceiver module 810 to send a first response message to the mobility management network element, the first response The message includes information about the one or more first SMFs.
- the transceiver module 810 is further configured to receive a second message from the mobility management network element
- the processing module 820 is further configured to obtain third parameter information according to the second message, where the third parameter information includes location information of the UE; select the second SMF according to the third parameter information; The second message acquires a second request message, and calls the transceiver module 810 to send the second request message to the second SMF.
- the transceiver module 810 is further configured to send the second SMF information to the mobility management network element.
- the processing module 820 is configured to select one or more first SMFs supporting the DNN, and send a first response message to the mobility management network element, which specifically includes:
- the second parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to select one or more SMFs that support the DNN, and to report to the mobility management network The element sends the first response message.
- the processing module 820 is configured to select one or more first SMFs that support the DNN, and call the transceiver module 810 to send a first response message to the mobility management network element, specifically include:
- the second parameter information also includes first target network element type indication information. If the first target network element type indication information is used to indicate SMF, the processing module 820 selects one or more DNNs that support the DNN And send the first SMF to the mobility management network element.
- the selection of the second SMF by the serving communication agent network element based on the third parameter information includes:
- the third parameter information also includes second target network element type indication information, and the second target network element type indication information is used to indicate an intermediate SMF.
- the second SMF is an intermediate session management function I-SMF.
- the device 800 may correspond to the method of serving the communication agent network element in the foregoing method embodiment, for example, the method in FIG. 4 or FIG. 5, and the above and other management of each module in the device 800
- the operations and/or functions are used to implement the corresponding steps of the method for serving the communication agent network element in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 800 includes:
- the transceiver module 810 receives the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information according to the first message, and the first message is used to request the service communication agent network element to discover the H-SMF according to the first parameter information, and the first
- the parameter information includes the identification HPLMN ID of the home public land mobile network and the data network name DNN;
- the processing module 820 is further configured to select one or more H-SMFs that satisfy the first parameter information, and call the transceiver module 810 to send a first response message to the mobility management network element.
- a response message includes information about the one or more H-SMFs.
- the transceiver module 810 is further configured to receive a second message from the mobility management network element
- the processing module 820 is further configured to obtain second parameter information according to the second message, where the second parameter information includes location information of the UE; select the V-SMF according to the second parameter information; The second message acquires the second request message, and calls the transceiver module 810 to send the second request message to the V-SMF.
- the transceiver module 810 is further configured to send the V-SMF information to the mobility management network element.
- the transceiver module 810 is further configured to receive first indication information from the mobility management network element, where the first parameter information further includes first indication information, An indication information is used to instruct the serving communication agent network element to reply a response message to the mobility management network element after discovering the H-SMF.
- the processing module 820 is configured to select one or more H-SMFs that satisfy the first parameter information, and call the transceiver module 810 to send the first H-SMF to the mobility management network element.
- a response message specifically including:
- the first parameter information also includes first target network element type indication information. If the first target network element type indication information is used to indicate H-SMF or SMF, one of the HPLMN ID and the DNN is selected to support Or multiple H-SMFs, and call the transceiver module 810 to send the first response message to the mobility management network element.
- the processing module 820 is configured to select a V-SMF supporting the location information of the UE based on the second parameter information, which specifically includes:
- the second parameter information also includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF.
- the device 800 may correspond to the method of serving a communication agent network element in the foregoing method embodiment, for example, the method in FIG. 6, and the above-mentioned and other management operations and/or the various modules in the device 800
- the or functions are to implement the corresponding steps of the method for serving the communication agent network element in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 800 includes:
- the transceiver module 810 is configured to receive the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information according to the first message, where the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the processing module 820 is further configured to determine whether there is an SMF that satisfies the first parameter information; if there is no SMF that satisfies the first parameter information, select one or more first SMFs according to the DNN, and Select the second SMF according to the location information of the UE.
- the method further includes:
- the processing module 820 is further configured to generate a second request message according to the first message and the one or more first SMFs, where the second request message includes information about one or more fourth SMFs;
- the transceiver module 810 is further configured to send a second request message to the second SMF;
- the transceiver module 810 is further configured to send information about the fifth SMF and information about the second SMF to the mobility management network element, where the fifth SMF It is the SMF selected by the second SMF among the one or more fourth SMFs.
- the transceiver module 810 is further configured to receive a first response message from the second SMF, where the first response message includes the URI information of the fifth SMF;
- the transceiver module 810 is configured to send the fifth SMF information to the mobility management network element, which specifically includes: obtaining the fifth SMF information according to the URI information of the fifth SMF in the first response message SMF information; sending the fifth SMF information to the mobility management network element.
- the information of the fifth SMF is included in the header of the second request message or included in the message body of the second request message.
- the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or included in the message body of the first response message.
- the first SMF is SMF
- the second SMF is I-SMF
- the first SMF is H-SMF
- the second SMF is V-SMF.
- the device 800 may correspond to the method of serving the communication agent network element in the foregoing method embodiment, for example, the method in FIG. 7, and the above-mentioned and other management operations and/or the various modules in the device 800
- the or functions are to implement the corresponding steps of the method for serving the communication agent network element in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 800 includes:
- the transceiver module 810 is configured to receive the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information according to the first message, and the first message is used to request the service communication agent network element to discover the session management network element according to the first parameter information.
- One parameter information includes the data network name DNN;
- the processing module 820 is further configured to select one or more session management network elements that satisfy the first parameter information, and call the transceiver module 810 to send a first response message to the mobility management network element.
- the first response message includes the information of the one or more session management network elements.
- the transceiver module 810 is further configured to: receive a second message from the mobility management network element;
- the processing module 820 is further configured to obtain second parameter information according to the second message, where the second parameter information includes location information of the UE; select an intermediate session management network element according to the second parameter information; The second message acquires the second request message, and sends the second request message to the intermediate session management network element.
- the transceiving module 810 is further configured to send information of the intermediate session management network element to the mobility management network element.
- the transceiving module 810 is further configured to: receive first indication information from the mobility management network element, the first parameter information further includes the first indication information, and The first indication information is used to instruct the serving communication agent network element to reply a response message to the mobility management network element after discovering the session management network element.
- the processing module 820 is configured to select one or more session management network elements that meet the first parameter information, and call the transceiver module 810 to send to the mobility management network element
- the first response message specifically includes:
- the first parameter information also includes first target network element type indication information, and the first target network element type indication information is used to indicate H-SMF or SMF, then the serving communication agent network element selects to support the DNN One or more H-SMFs or SMFs, and send the first response message to the mobility management network element.
- the transceiving module 810 is configured to select an intermediate session management network element that supports the location information of the UE based on the second parameter information, which specifically includes:
- the second parameter information also includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select an intermediate session management network element I-SMF or a visited location Session management network element V-SMF, the serving communication agent network element selects an intermediate session management network element I-SMF or a visited session management network element V-SMF that supports the location information of the UE.
- the first parameter information further includes the identification HPLMN ID of the home public land mobile network.
- the device 800 includes:
- the transceiver module 810 is configured to receive the first message from the mobility management network element
- the processing module 820 is configured to obtain first parameter information and second parameter information according to the first message, where the first parameter information is used to select a first SMF, and the second parameter information is used to select a second SMF;
- the processing module 820 is further configured to select one or more first SMFs according to the first parameter information, and select a second SMF according to the second parameter information. Therefore, the service communication agent network element can determine that the first SMF and the second SMF need to be selected at the same time according to the first parameter information and the second parameter information, thereby simplifying the logic of the service communication agent, so that the service communication agent does not need to understand business-related logic.
- the processing module 820 is further configured to generate a second request message according to the first message and the one or more first SMFs, and the second request message includes one or more first SMFs.
- Information about one or more fourth SMFs in one SMF; the transceiver module 810 is further configured to send a second request message to the second SMF.
- the first message includes indication information
- the indication information is used to instruct the service communication agent to include the first SMF information in the second request message, or
- the indication information is used to instruct the serving communication agent network element to send the second request message to the second SMF.
- the method further includes: the indication information is included in the first parameter information, the indication information is a first network element type indication, and the first network element type indication is used to indicate If the serving communication agent network element selects H-SMF or SMF, the serving communication agent network element determines that the second request message includes the first SMF information; or, the indication information is included in the second parameter In the information, the indication information is a second network element type indication, and the second network element type indication is used to instruct the service communication agent network element to select V-SMF or I-SMF, then the service communication agent network element Determine to send the second request message to the second SMF.
- the transceiver module 810 is further configured to send information about the fifth SMF and information about the second SMF to the mobility management network element, where the fifth SMF It is the SMF selected by the second SMF among the one or more fourth SMFs.
- the information of the second SMF includes at least one of service area information of the server of the second SMF, identification information of the second SMF, and URI of the second SMF;
- the SMF information includes one or more of the service area information of the fifth SMF server, the identification information of the fifth SMF, and the URI of the fifth SMF.
- the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or included in the message body of the first response message.
- the transceiver module is further configured to receive a first response message from the second SMF, where the first response message includes the URI information of the fifth SMF;
- the transceiving module is configured to send the fifth SMF information to the mobility management network element, and further includes: acquiring the fifth SMF information according to the URI information of the fifth SMF in the first response message; Sending the fifth SMF information to the mobility management network element.
- the service communication agent network element generates a second request message according to the first message and the one or more first SMFs, and the second request message includes one or one of the one or more first SMFs.
- Information about multiple fourth SMFs including:
- the information of the one or more fourth SMFs is included in the header of the second request message or included in the message body of the second request message.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- the device 800 may correspond to the method of serving a communication agent network element in the foregoing method embodiment, for example, the method in FIG. 8, and the foregoing and other management operations and/or the various modules in the device 800
- the or functions are to implement the corresponding steps of the method for serving the communication agent network element in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the apparatus 800 involved in the embodiment of the present application may be the apparatus 900 shown in FIG. 10.
- FIG. 10 shows a schematic structural diagram of an apparatus 900 for selecting a session management network element according to an embodiment of the present application.
- the apparatus 900 includes a processor 901.
- the processor 901 is configured to call an interface to perform the following actions: receive a first message from a mobility management network element; the processor 901 is configured to: obtain the first message according to the first message A parameter information, the first message is used to request the service communication agent network element to select an SMF according to the first parameter information, obtain a first request message according to the first message, and send the first request message
- the first parameter information includes the location information of the user equipment UE and the data network name DNN; it is also used to determine whether there is an SMF that meets the first parameter information; if there is no SMF that meets the first parameter information, In the case of the information SMF, it is used to select one or more first SMFs that support the DNN, and call the transceiver module to send a rejection message to the mobility management network element, where the rejection message includes the one Or multiple first SMF information.
- the processor 901 may call an interface to perform the above-mentioned transceiving action, where the called interface may be a logical interface or a physical interface, which is not limited.
- the physical interface can be implemented by a transceiver.
- the device 900 further includes a transceiver 903.
- the device 900 further includes a memory 902, and the memory 902 can store the program code in the foregoing method embodiment, so that the processor 901 can call it.
- the processor 901, the memory 902, and the transceiver 903 communicate with each other through an internal connection path to transfer control and/or data signals.
- the processor 901, the memory 902, and the transceiver 903 can be implemented by chips, and the processor 901, the memory 902, and the transceiver 903 can be implemented on the same chip, or they may be implemented on different chips. Or any combination of two functions can be implemented in one chip.
- the memory 902 can store program codes, and the processor 901 calls the program codes stored in the memory 902 to implement corresponding functions of the device 900.
- the device 900 may also be used to perform other steps and/or operations on the service communication agent network element side in the foregoing embodiment, and for the sake of brevity, details are not described here.
- FIG. 11 shows a possible exemplary block diagram of another device involved in an embodiment of the present application.
- the device 1000 may exist in the form of software, may also be a mobility management network element, or may also be a mobility management network. Yuan in the chip.
- the device 1000 includes a sending module 1010 and a receiving module 1020, and the sending module 1010 may include a receiving unit and a sending unit.
- the receiving module 1020 is used to control and manage the actions of the device 1000.
- the sending module 1010 is used to support communication between the device 1000 and other network entities (for example, session control function entities, etc.).
- the device 1000 may further include a storage unit for storing program codes and data of the device 1000.
- each module in the device 1000 may be implemented by software.
- the receiving module 1020 may be a processor or a controller, for example, a general-purpose central processing unit (central processing unit, CPU), a general-purpose processor, a digital signal processing (digital signal processing, DSP), and an application specific integrated circuit (application integrated circuit).
- a general-purpose central processing unit central processing unit, CPU
- a general-purpose processor digital signal processing (digital signal processing, DSP)
- an application specific integrated circuit application integrated circuit
- ASIC application specific integrated circuits
- FPGA field programmable gate array
- the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
- the sending module 1010 may be a communication interface, a transceiver, or a transceiver circuit, etc., where the communication interface is a general term.
- the communication interface may include multiple interfaces, for example, may include: a mobility management network element and a CSCF network element Between the interface, and/or other interfaces.
- the storage unit may be a memory.
- the receiving module 1020 can support the device 1000 to perform the actions of the mobility management network elements in the above method examples. For example, it can support the device 1000 to perform step 240 in FIG. 2, steps 240 and 280 in FIG. 3, and steps 340 and 360 in FIG. 4, Steps 340, 360, and 392 in FIG. 5, step 430 in FIG. 6, and step 570 in FIG. 7.
- the sending module 1010 can support the communication between the device 1000 and the mobility management network element, SMF (such as V-SMF or I-SMF).
- SMF mobility management network element
- the sending module 1010 can support the device 1000 to perform step 210 in FIG. 2, as shown in FIG. Steps 210, 250 in Figure 4, steps 310, 350, and 370 in Figure 5, steps 410, 440 in Figure 6, and step 510 in Figure 7.
- it can be as follows:
- the device 1000 includes:
- the sending module 1010 is configured to send a first message to the service communication agent network element, where the first message includes first parameter information, and the first message is used to request the service communication agent network element according to the first parameter Select SMF for information, obtain a first request message according to the first request message, and send the first request message to the SMF.
- the first parameter information includes the location information of the user equipment UE and the data network name DNN ;
- the receiving module 1020 is configured to receive a rejection message from the service communication agent network element, where the rejection message includes information about one or more first SMFs selected by the service communication agent to support the DNN.
- the sending module 1010 is further configured to:
- the second message includes second parameter information and one or more third SMFs among the one or more first SMFs, and the second parameter information Used to discover the second SMF, the second parameter information includes UE location information, and the one or more third SMFs are used to send to the second SMF.
- the receiving module 1020 is further configured to:
- the first parameter information further includes target network element type indication information, and the target network element type indication information is used to instruct the serving communication agent network element to select SMF.
- the sending module 1010 is further configured to:
- One or more first SMFs of the DNN and sending information of the one or more first SMFs to the mobility management network element.
- the second SMF is a visited session management function V-SMF
- the one or more first SMFs are one or more H-SMFs
- the first parameter information further includes the home public The identification HPLMN ID of the land mobile network
- the first parameter information is used to discover the home session management function H-SMF
- the rejection message includes the one or more H-SMF information.
- the information of the one or more H-SMFs is one or more H-SMFs selected by the serving communication agent network element to support the HPLMN ID and the DNN.
- the second SMF is an intermediate session management function I-SMF.
- the device 1000 may correspond to the method of mobility management network element in the foregoing method embodiment, for example, the method in FIG. 2 or FIG. 3, and the foregoing and other management operations of each module in the device 1000
- the and/or functions are used to implement the corresponding steps of the mobility management network element method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 1000 includes:
- the sending module 1010 is configured to send a first message to the service communication agent network element, where the first message includes first parameter information, and the first message is used to request the service communication agent network element according to the first parameter Select SMF for information, obtain a first request message according to the first request message, and send the first request message to the SMF.
- the first parameter information includes the location information of the user equipment UE and the data network name DNN ;
- the receiving module 1020 is configured to receive a rejection message from the serving communication agent network element, where the rejection message is used to indicate that there is no SMF that meets the first parameter information;
- the sending module 1010 is further configured to send second parameter information to the service communication agent network element, where the second parameter information includes the DNN;
- the receiving module 1020 is further configured to receive a first response message from the service communication agent network element, where the first response message includes information about the one or more first SMFs.
- the sending module 1010 is further configured to:
- a second message is sent to the serving communication agent network element, the second message includes third parameter information, the third parameter information includes location information of the UE, and the third parameter information is used to select a second SMF.
- the receiving module 1020 is further configured to:
- the second parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to select one or more SMFs that support the DNN, and to inform the The mobility management network element sends the first response message.
- the second parameter information further includes first target network element type indication information, and the first target network element type indication information is used to instruct the serving communication agent network element to select SMF.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select an intermediate SMF.
- the second SMF is an intermediate session management function I-SMF.
- the device 1000 may correspond to the method of mobility management network element in the foregoing method embodiment, for example, the method in FIG. 4 or FIG. 5, and the foregoing and other management operations of each module in the device 1000
- the and/or functions are used to implement the corresponding steps of the mobility management network element method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 1000 includes:
- the sending module 1010 is configured to send a first message to the service communication agent network element, where the first message includes first parameter information, and the first message is used to request the service communication agent network element according to the first parameter
- the information discovers H-SMF, and the first parameter information includes the identification HPLMN ID of the home public land mobile network and the data network name DNN;
- the receiving module 1020 is configured to receive a first response message from the service communication agent network element, where the first response message includes information about the one or more H-SMFs.
- the sending module 1010 is further configured to: send a second message to the service communication agent network element, the second message includes second parameter information, and the second parameter information is used For V-SMF discovery, the second parameter information includes location information of the UE.
- the receiving module 1020 is further configured to: receive the V-SMF information from the service communication agent network element.
- the first parameter information further includes first indication information, and the first indication information is used to instruct the serving communication agent network element to reply a response to the mobility management network element after discovering the H-SMF news.
- the first parameter information further includes first target network element type indication information, and the first target network element type indication information is used to instruct the serving communication agent network element to select H-SMF or SMF.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select V-SMF.
- the device 1000 may correspond to the method of mobility management network element in the foregoing method embodiment, for example, the method in FIG. 6, and the above-mentioned and other management operations and/or the various modules in the device 1000
- the functions are to implement the corresponding steps of the mobility management network element method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 1000 includes:
- the sending module 1010 is configured to send a first message to the serving communication agent network element, where the first message includes first parameter information, and the first parameter information includes the location information of the user equipment UE and the data network name DNN;
- the receiving module 1020 is configured to receive information about the fifth SMF and information about the second SMF from the serving communication agent network element, where the fifth SMF is one or more fourth in the second request message SMF in SMF.
- the receiving module 1020 is configured to receive the third SMF information and the second SMF information from the service communication agent network element, which specifically includes:
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- the device 1000 may correspond to the method of mobility management network element in the foregoing method embodiment, for example, the method in FIG. 7, and the above-mentioned and other management operations and/or other management operations of each module in the device 1000
- the functions are to implement the corresponding steps of the mobility management network element method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the device 1000 includes:
- the sending module 1010 is configured to send a first message to the service communication agent network element, where the first message includes first parameter information, and the first message is used to request the service communication agent network element according to the first parameter Information discovery session management network element, the first parameter information includes the data network name DNN;
- the receiving module 1020 is configured to receive a first response message from the service communication agent network element, where the first response message includes information about the one or more session management network elements.
- the sending module 1010 is further configured to send a second message to the service communication agent network element, where the second message includes second parameter information, and the second parameter information is used for In the discovery of an intermediate session management network element, the second parameter information includes location information of the UE.
- the device further includes a processing module (not shown in FIG. 10), and the processing module is further configured to:
- the serving communication agent network element Before sending the second message to the serving communication agent network element, determine whether there is a session management network element that supports the location information of the UE according to the information of the session management network element, if there is no session management network that supports the location information of the UE Element, determine the need to select an intermediate session management network element.
- the receiving module 1020 is further configured to receive information of the intermediate session management network element from the service communication agent network element.
- the first parameter information further includes first indication information, and the first indication information is used to indicate that the serving communication agent network element is discovering the attribution session management network element or session management The network element then replies a response message to the mobility management network element.
- the first parameter information further includes first target network element type indication information, and the first target network element type indication information is used to indicate the home session management network element or the session management network Element, used to instruct the serving communication agent network element to reply a response message to the mobility management network element after discovering the home session management network element or the session management network element.
- the second parameter information further includes second target network element type indication information, and the second target network element type indication information is used to instruct the serving communication agent network element to select a visiting place Session management network element.
- the device 1000 includes:
- the sending module 1010 is configured to send a first message, the first message includes first parameter information and second parameter information, the first parameter information is used to select a first SMF, and the second parameter information is used to select Second SMF;
- the receiving module 1020 is configured to receive the fifth SMF information and the second SMF information from the service communication agent network element. Therefore, the mobility management network element can obtain the two SMFs determined by the service communication agent network element, so that when the mobility management network element works in the agent discovery mode, it still supports the creation of a session that includes two SMFs, so as not to the mobility management network. Meta-work is restricted in the application scenarios of agent discovery mode.
- the receiving module is configured to receive fifth SMF information and second SMF information from the service communication agent network element, which specifically includes: receiving information from the service communication agent network element The first response message, wherein the information of the fifth SMF and the information of the second SMF are included in the header of the first response message or included in the message body of the first response message.
- the first SMF is an SMF
- the second SMF is an I-SMF
- the first SMF is an H-SMF
- the second SMF is a V-SMF.
- the device 1000 may correspond to the method of mobility management network element in the foregoing method embodiment, for example, the method in FIG. 8, and the above-mentioned and other management operations and/or the various modules in the device 1000
- the functions are to implement the corresponding steps of the mobility management network element method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved.
- details are not described here.
- the apparatus 1000 involved in the embodiment of the present application may be the apparatus 1100 shown in FIG. 12.
- FIG. 12 shows a schematic structural diagram of an apparatus 1100 for selecting a session management network element according to an embodiment of the present application.
- the apparatus 1100 includes: a processor 1101.
- the processor 1101 is configured to call an interface to perform the following actions: send a first message to the service communication agent network element, where the first message includes first parameter information, and the first message Is used to request the service communication agent network element to select an SMF according to the first parameter information, obtain a first request message according to the first request message, and send the first request message to the SMF, and the first A parameter information includes the location information of the user equipment UE and the data network name DNN; a rejection message from the serving communication agent network element is received, and the rejection message includes one or the DNN selected by the service communication agent to support the DNN. Multiple first SMF information.
- the processor 1101 may call an interface to perform the above-mentioned transceiving action, where the called interface may be a logical interface or a physical interface, which is not limited.
- the physical interface can be implemented by a transceiver.
- the device 1100 further includes a transceiver 1103.
- the device 1100 further includes a memory 1102, and the memory 1102 can store the program codes in the foregoing method embodiments, so that the processor 1101 can call them.
- the device 1100 includes the processor 1101, the memory 1102, and the transceiver 1103, the processor 1101, the memory 1102, and the transceiver 1103 communicate with each other through internal connection paths, and transfer control and/or data signals.
- the processor 1101, the memory 1102, and the transceiver 1103 may be implemented by chips.
- the processor 1101, the memory 1102, and the transceiver 1103 may be implemented on the same chip or may be implemented on different chips. Or any combination of two functions can be implemented in one chip.
- the memory 1102 may store program codes, and the processor 1101 calls the program codes stored in the memory 1102 to implement corresponding functions of the apparatus 1100.
- apparatus 1100 may also be used to perform other steps and/or operations on the mobility management network element side in the foregoing embodiment, and for the sake of brevity, details are not described here.
- the methods disclosed in the above embodiments of the present application may be applied to a processor or implemented by a processor.
- the processor may be an integrated circuit chip with signal processing capabilities.
- the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
- the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components can also be system on chip (SoC), central processor unit (CPU), or network processor (network processor).
- SoC system on chip
- CPU central processor unit
- network processor network processor
- processor can also be a digital signal processing circuit (digital signal processor, DSP), can also be a microcontroller (microcontroller unit, MCU), can also be a programmable controller (programmable logic device, PLD) or other Integrated chip.
- DSP digital signal processor
- MCU microcontroller unit
- PLD programmable controller
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
- the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
- the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
- the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
- the volatile memory may be random access memory (RAM), which is used as an external cache.
- RAM random access memory
- static random access memory static random access memory
- dynamic RAM dynamic random access memory
- DRAM dynamic random access memory
- SDRAM synchronous dynamic random access memory
- double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
- enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
- serial link DRAM SLDRAM
- direct rambus RAM direct rambus RAM
- the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic.
- the various numerical numbers or serial numbers involved in the foregoing processes are only for easy distinction for description, and should not constitute any limitation on the implementation process of the embodiments of the present application.
- the item can be any of the following: A; B ; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A , C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C.
- the item can be any of the following: A; B ; C; A and B; A and C; B and C; A, B and C; A and A; A and B; A, A and C, A, B and B; A , C and C; B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C.
- the item includes at least one of the following: A, B,..., and X"
- the applicable items of the item can also be obtained according to the aforementioned rules.
- the disclosed system, device, and method may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
- the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read only memory ROM, random access memory RAM, magnetic disk or optical disk and other media that can store program codes.
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Abstract
Description
Claims (61)
- 一种选择会话管理网元的方法,其特征在于,包括:服务通信代理网元从移动性管理网元接收第一消息;所述服务通信代理网元根据所述第一消息,获取第一参数信息,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;所述服务通信代理网元确定是否存在满足第一参数信息的会话管理网元;在不存在满足所述第一参数信息的会话管理网元的情况下,所述服务通信代理网元向所述移动性管理网元发送拒绝消息,所述拒绝消息用于指示不存在满足所述第一参数信息的会话管理网元。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:在存在满足所述第一参数信息的会话管理网元的情况下,所述服务通信代理网元根据所述第一消息获取第一请求消息,将所述第一请求消息发送给所述会话管理网元。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:所述服务通信代理网元从所述移动性管理网元接收第二参数信息,所述第二参数信息包括所述DNN;所述服务通信代理网元选择支持所述第二参数信息的一个或多个第一会话管理网元,并向移动性管理网元发送第一响应消息,所述第一响应消息中包括所述一个或多个第一会话管理网元的信息。
- 根据权利要求3所述的方法,其特征在于,所述第一个或多个第一会话管理网元的信息包括所述一个或多个第一会话管理网元的服务器的服务区域信息、所述一个或多个第一会话管理网元的标识信息、所述一个或多个第一会话管理网元的URI中的至少一项。
- 根据权利要求1-4中任一项所述的方法,其特征在于,所述服务通信代理网元向所述移动性管理网元发送拒绝消息之后,所述方法还包括:所述服务通信代理网元接收来自所述移动性管理网元的第二消息;所述服务通信代理网元根据所述第二消息获取第三参数信息,所述第三参数信息中包括UE的位置信息;所述服务通信代理网元根据所述第三参数信息选择所述第二会话管理网元;所述服务通信代理网元根据所述第二消息获取第二请求消息,并向所述第二会话管理网元发送所述第二请求消息。
- 根据权利要求1-5中任一项所述的方法,其特征在于,所述方法还包括:所述服务通信代理网元向所述移动性管理网元发送所述第二会话管理网元的信息。
- 根据权利要求6所述的方法,其特征在于,所述服务通信代理网元向所述移动性管理网元发送所述第二会话管理网元的信息包括:所述服务通信代理网元接收来自所述第二会话管理网元的响应消息,将所述第二会话管理网元的信息携带于响应消息中,通过响应消息将所述第二会话管理网元的信息发送给所述移动性管理网元。
- 根据权利要求3所述的方法,其特征在于,所述服务通信代理网元选择支持所述 DNN的一个或多个第一会话管理网元,并向移动性管理网元发送第一响应消息,包括:所述第二参数信息中还包括第一指示信息,所述第一指示信息用于指示所述服务通信代理网元选择支持所述DNN的一个或多个会话管理网元,并向所述移动性管理网元发送所述第一响应消息。
- 根据权利要求5所述的方法,其特征在于,所述方法还包括:所述服务通信代理网元接收来自所述第二会话管理网元的响应消息,将所述响应消息发送给所述移动性管理网元,其中,所述响应消息的头部或消息体中携带所述第二会话管理网元的信息。
- 根据权利要求6或7所述的方法,其特征在于,所述第二会话管理网元的信息包括所述第二会话管理网元的服务器的服务区域信息、所述第二会话管理网元的标识信息、所述第二会话管理网元的URI中的一项或多项。
- 根据权利要求3所述的方法,其特征在于,所述服务通信代理网元选择支持所述DNN的一个或多个第一会话管理网元,并向移动性管理网元发送第一响应消息,包括:所述第二参数信息中还包括第一目标网元类型指示信息,若所述第一目标网元类型指示信息用于指示会话管理网元,则所述服务通信代理网元选择支持所述DNN的一个或多个第一会话管理网元,并向所述移动性管理网元发送所述第一响应消息。
- 根据权利要求3所述的方法,其特征在于,所述服务通信代理网元选择支持所述DNN的一个或多个第一会话管理网元,并向移动性管理网元发送第一响应消息,包括:所述第二参数信息中还包括第一指示信息,所述第一指示信息用于指示:所述服务通信代理网元选择支持所述DNN的一个或多个第一会话管理网元,并向所述移动性管理网元发送所述第一响应消息。
- 根据权利要求5所述的方法,其特征在于,所述服务通信代理网元基于所述第三参数信息选择所述第二会话管理网元,包括:所述第三参数信息中还包括第二目标网元类型指示信息,所述第二目标网元类型指示信息用于指示中间会话管理网元。
- 根据权利要求4所述的方法,其特征在于,所述第二会话管理网元是中间会话管理网元。
- 一种选择会话管理网元的装置,其特征在于,包括:收发模块,用于从移动性管理网元接收第一消息;处理模块,用于根据所述第一消息,获取第一参数信息,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;确定是否存在满足第一参数信息的会话管理网元;在不存在满足所述第一参数信息的会话管理网元的情况下,所述处理模块还用于调用所述收发模块向所述移动性管理网元发送拒绝消息,所述拒绝消息用于指示不存在满足所述第一参数信息的会话管理网元。
- 根据权利要求15所述的装置,其特征在于,所述处理模块,用于在存在满足所述第一参数信息的会话管理网元的情况下,根据所述第一消息获取第一请求消息,调用所述收发模块将所述第一请求消息发送给所述会话管理网元。
- 根据权利要求15所述的装置,其特征在于,所述收发模块还用于,从所述移动性管理网元接收第二参数信息,所述第二参数信息包括所述DNN;所述处理模块还用于,选择支持所述第二参数信息的一个或多个第一会话管理网元,并调用所述收发模块向移动性管理网元发送第一响应消息,所述第一响应消息中包括所述一个或多个第一会话管理网元的信息。
- 根据权利要求15-17中任一项所述的装置,其特征在于,在向所述移动性管理网元发送拒绝消息之后,所述收发模块还用于,接收来自所述移动性管理网元的第二消息;所述处理模块还用于,根据所述第二消息获取第三参数信息,所述第三参数信息中包括UE的位置信息;根据所述第三参数信息选择所述第二会话管理网元;根据所述第二消息获取第二请求消息,并调用所述收发模块向所述第二会话管理网元发送所述第二请求消息。
- 根据权利要求18所述的装置,其特征在于,所述收发模块还用于,向所述移动性管理网元发送所述第二会话管理网元的信息。
- 根据权利要求19所述的装置,其特征在于,所述处理模块具体用于:在调用所述收发模块收到第二会话管理网元的响应消息后,将第二会话管理网元的信息携带于响应消息中,用所述收发模块通过响应消息将所述第二会话管理网元的信息发送给移动性管理网元。
- 根据权利要求18所述的装置,其特征在于,所述处理模块还用于调用所述收发模块接收来自第二会话管理网元的响应消息,将所述响应消息发送给所述移动性管理网元,其中,所述响应消息的头部或消息体中携带所述第二会话管理网元的信息。
- 根据权利要求19或20所述的装置,其特征在于,所述第二会话管理网元的信息包括所述第二会话管理网元的服务器的服务区域信息、所述第二会话管理网元的标识信息、所述第二会话管理网元的URI中的一项或多项。
- 根据权利要求17所述的装置,其特征在于,所述处理模块用于选择支持所述DNN的一个或多个第一会话管理网元,并向移动性管理网元发送第一响应消息,具体包括:所述第二参数信息中还包括第一指示信息,所述第一指示信息用于指示所述服务通信代理网元选择支持所述DNN的一个或多个会话管理网元,并向所述移动性管理网元发送所述第一响应消息。
- 根据权利要求17所述的装置,其特征在于,所述处理模块用于选择支持所述DNN的一个或多个第一会话管理网元,并调用所述收发模块向移动性管理网元发送第一响应消息,具体包括:所述第二参数信息中还包括第一目标网元类型指示信息,若所述第一目标网元类型指示信息用于指示会话管理网元,则所述处理模块选择支持所述DNN的一个或多个第一会话管理网元,并向所述移动性管理网元发送所述第一响应消息。
- 根据权利要求18所述的装置,其特征在于,所述服务通信代理网元基于所述第三参数信息选择所述第二会话管理网元,包括:所述第三参数信息中还包括第二目标网元类型指示信息,所述第二目标网元类型指示信息用于指示中间会话管理网元。
- 根据权利要求18所述的装置,其特征在于,所述第二会话管理网元是中间会话管理网元。
- 一种选择会话管理网元的方法,其特征在于,包括:移动性管理网元向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;所述移动性管理网元接收来自所述服务通信代理网元的拒绝消息,所述拒绝消息用于指示不存在满足所述第一参数信息的会话管理网元。
- 根据权利要求27所述的方法,其特征在于,所述方法还包括:所述移动性管理网元发送第二参数信息,所述第二参数信息包括所述DNN;所述移动性管理网元接收第一响应消息,所述第一响应消息中包括所述一个或多个第一会话管理网元的信息。
- 根据权利要求27或28所述的方法,其特征在于,所述方法还包括:所述移动性管理网元向所述服务通信代理网元发送第二消息,所述第二消息包括第三参数信息,所述第三参数信息中包括UE的位置信息,所述第三参数信息用于选择第二会话管理网元。
- 根据权利要求29所述的方法,其特征在于,所述方法还包括:所述移动性管理网元接收来自所述服务通信代理网元的所述第二会话管理网元的信息。
- 根据权利要求30所述的方法,其特征在于,所述移动性管理网元接收来自所述服务通信代理网元的所述第二会话管理网元的信息包括:所述移动性管理网元接收来自服务通信代理网元的响应消息,其中,所述响应消息携带所述第二会话管理网元的信息。
- 根据权利要求30或31所述的方法,其特征在于,所述第二会话管理网元的信息包括所述第二会话管理网元的服务器的服务区域信息、所述第二会话管理网元的标识信息、所述第二会话管理网元的URI中的一项或多项。
- 根据权利要求29-32中任一项所述的方法,其特征在于,所述第二会话管理网元是中间会话管理网元。
- 一种选择会话管理网元会话管理网元的装置,其特征在于,包括:发送模块,用于向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;接收模块,用于接收来自所述服务通信代理网元的拒绝消息,所述拒绝消息用于指示不存在满足所述第一参数信息的会话管理网元。
- 根据权利要求34所述的装置,其特征在于,所述发送模块,还用于发送第二参数信息,所述第二参数信息包括所述DNN;所述接收模块,还用于接收第一响应消息,所述第一响应消息中包括所述一个或多个第一会话管理网元的信息。
- 根据权利要求34或35所述的装置,其特征在于,所述发送模块还用于:向所述服务通信代理网元发送第二消息,所述第二消息包括第三参数信息,所述第三参数信息中包括UE的位置信息,所述第三参数信息用于选择第二会话管理网元。
- 根据权利要求36所述的装置,其特征在于,所述接收模块还用于:接收来自所 述服务通信代理网元的所述第二会话管理网元的信息。
- 根据权利要求37所述的装置,其特征在于,所述第二会话管理网元的信息包括所述第二会话管理网元的服务器的服务区域信息、所述第二会话管理网元的标识信息、所述第二会话管理网元的URI中的一项或多项。
- 根据权利要求36-38中任一项所述的装置,其特征在于,所述第二会话管理网元是中间会话管理网元。
- 一种选择会话管理网元的方法,其特征在于,包括:通信代理网元从移动性管理网元接收第一消息;所述通信代理网元根据所述第一消息,获取第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;所述通信代理网元确定是否存在满足所述第一参数信息的会话管理网元;在不存在满足所述第一参数信息的会话管理网元的情况下,所述服务通信代理网元选择支持所述DNN的一个或多个第一会话管理网元,并向所述移动性管理网元发送拒绝消息,所述拒绝消息中包括所述一个或多个第一会话管理网元的信息。
- 一种选择会话管理网元会话管理网元的方法,其特征在于,包括:移动性管理网元向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,并根据所述第一请求消息获取第一请求消息,将所述第一请求消息发送给所述会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;所述移动性管理网元接收来自所述服务通信代理网元的拒绝消息,所述拒绝消息中包括所述服务通信代理选择的支持所述DNN的一个或多个第一会话管理网元的信息。
- 一种选择会话管理网元会话管理网元的装置,其特征在于,包括:收发模块,用于从移动性管理网元接收第一消息;处理模块,用于根据所述第一消息,获取第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;所述处理模块,还用于确定是否存在满足所述第一参数信息的会话管理网元;在不存在满足所述第一参数信息的会话管理网元的情况下,用于选择支持所述DNN的一个或多个第一会话管理网元,并调用所述收发模块向所述移动性管理网元发送拒绝消息,所述拒绝消息中包括所述一个或多个第一会话管理网元的信息。
- 一种选择会话管理网元会话管理网元的装置,其特征在于,包括:发送模块,用于向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息选择会话管理网元,并根据所述第一请求消息获取第一请求消息,将所述第一请求消息发送给所述会话管理网元,所述第一参数信息中包括用户设备UE的位置信息和数据网络名DNN;接收模块,用于接收来自所述服务通信代理网元的拒绝消息,所述拒绝消息中包括所述服务通信代理选择的支持所述DNN的一个或多个第一会话管理网元的信息。
- 一种选择会话管理网元的方法,其特征在于,包括:服务通信代理网元从移动性管理网元接收第一消息;所述服务通信代理网元根据所述第一消息,获取第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息发现会话管理网元,所述第一参数信息中包括数据网络名DNN;所述服务通信代理网元选择满足所述第一参数信息的一个或多个会话管理网元,并向所述移动性管理网元发送第一响应消息,所述第一响应消息包括所述一个或多个会话管理网元的信息。
- 一种选择会话管理网元的方法,其特征在于,包括:移动性管理网元向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息发现会话管理网元,所述第一参数信息中包括数据网络名DNN;移动性管理网元接收来自所述服务通信代理网元的第一响应消息,所述第一响应消息包括所述一个或多个会话管理网元的信息。
- 一种选择会话管理网元的装置,其特征在于,包括:收发模块,用于从移动性管理网元接收第一消息;处理模块,用于根据所述第一消息,获取第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息发现会话管理网元,所述第一参数信息中包括数据网络名DNN;所述处理模块还用于,选择满足所述第一参数信息的一个或多个会话管理网元,并调用所述收发模块向所述移动性管理网元发送第一响应消息,所述第一响应消息包括所述一个或多个会话管理网元的信息。
- 一种选择会话管理网元的装置,其特征在于,包括:发送模块,用于向服务通信代理网元发送第一消息,所述第一消息中包括第一参数信息,所述第一消息用于请求所述服务通信代理网元根据所述第一参数信息发现会话管理网元,所述第一参数信息中包括数据网络名DNN;接收模块,用于接收来自所述服务通信代理网元的第一响应消息,所述第一响应消息包括所述一个或多个会话管理网元的信息。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求1到14任一项所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求1到14任一项所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求27到33任一项所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求27到33任一项所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求40所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求40所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求41所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求41所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求44所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求44所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种选择会话管理网元的装置,其特征在于,包括:通信接口和至少一个处理器,所述通信接口和所述至少一个处理器通过线路互联,所述通信接口用于执行权利要求45所述的方法中,在所述装置侧进行消息接收和发送的操作;所述至少一个处理器调用指令,执行权利要求45所述的方法中,在所述装置进行的消息处理或控制操作。
- 一种装置,其特征在于,包括处理器和存储器,所述存储器中存储有计算机程序,所述处理器读取并执行所述存储器中存储的计算机程序时,使得所述通信装置实现权利要求1至14,27至33,40,41,44,45中任意一项所述的方法。
- 一种芯片***,其特征在于,包括:所述芯片***包括至少一个处理器,和接口电路,所述接口电路和所述至少一个处理器通过线路互联,所述处理器通过运行指令,以执行权利要求1到14,27至33,40,41,44,45中任一项所述的方法。
- 一种选择会话管理网元的装置,用于执行1到14,27至33,40,41,44,45中任一项所述方法。
- 一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述1到14,27至33,40,41,44,45中任一项所述的方法。
- 一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1到14,27至33,40,41,44,45中任一项所述的方法。
- 一种通信***,其特征在于,包括如权利要求15至26,48中任一项所述的装置,和,如权利要求34至39,49中任一项所述的装置。
- 一种通信***,其特征在于,包括如权利要求42或50所述的装置,和,如权利要求43或51所述的装置。
- 一种通信***,其特征在于,包括如权利要求46或52所述的装置,和,如权利要求47或53所述的装置。
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JP2021558876A JP7425087B2 (ja) | 2019-04-02 | 2020-04-02 | セッション管理ネットワーク要素を選択するための方法および装置 |
EP20784770.8A EP3937466A4 (en) | 2019-04-02 | 2020-04-02 | METHOD AND APPARATUS FOR SELECTING A SESSION MANAGEMENT NETWORK ELEMENT |
US17/491,849 US12028929B2 (en) | 2019-04-02 | 2021-10-01 | Method and apparatus for selecting session management network element |
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US12028929B2 (en) | 2024-07-02 |
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