WO2025008870A1 - Procédé et système de routage de demande d'enregistrement dans un réseau sans fil - Google Patents

Procédé et système de routage de demande d'enregistrement dans un réseau sans fil Download PDF

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Publication number
WO2025008870A1
WO2025008870A1 PCT/IN2024/050740 IN2024050740W WO2025008870A1 WO 2025008870 A1 WO2025008870 A1 WO 2025008870A1 IN 2024050740 W IN2024050740 W IN 2024050740W WO 2025008870 A1 WO2025008870 A1 WO 2025008870A1
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WIPO (PCT)
Prior art keywords
registration request
network
network node
identifier
amf
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PCT/IN2024/050740
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English (en)
Inventor
Mukesh Singh
Aayush Bhatnagar
Fenil NATALI
Koushik Mukherjee
Jim EDAKKARA
Arpita Jaywant Ghag
Dipanjan BHATTACHARYA
Sandeep Kumar
Harbinder Pal Singh
Birendra Singh Bisht
Amit Kumar
Naresh Bhatt
Jayakrishna Vedma
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Jio Platforms Ltd
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Jio Platforms Ltd
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Publication of WO2025008870A1 publication Critical patent/WO2025008870A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • 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
    • H04W8/08—Mobility data transfer

Definitions

  • the present disclosure relates generally to the field of wireless communication systems. More particularly, the present disclosure relates to methods and systems for routing the registration request in a wireless communication network.
  • Wireless communication technology has rapidly evolved over the past few decades, with each generation bringing significant improvements and advancements.
  • the first generation of wireless communication technology was based on analog technology and offered only voice services.
  • 2G second-generation
  • 3G technology marked the introduction of high-speed internet access, mobile video calling, and location-based services.
  • 4G fourth-generation
  • 5G fifth-generation
  • wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users.
  • PLMN Public Land Mobile Network
  • AMF Access Mobility Function
  • CIoT Cellular Internet of Things
  • Mobility networks operate independently, each with its own set of user data, authentication functions, and mobility management functions.
  • the traditional method of rerouting a UE to another AMF is based on network slicing, a concept that allows the creation of multiple virtual networks on top of a shared physical infrastructure. Each slice caters to a specific set of service requirements and has its own resources and network functions.
  • UE User Equipment
  • AMF Access Mobility Function
  • PLMN Public Land Mobile Network
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • RI Routing Indicator
  • SUCI Subscriber Concealed Identifier
  • An aspect of the present disclosure provides a method for rerouting a registration request.
  • the method comprises receiving, at a first network node from a User Equipment (UE), the registration request for establishing a connection between the UE and a Core Network (CN), wherein the registration request comprises an identifier associated with the UE.
  • the method further includes analysing, by the first network node, the identifier to extract a Routing Indicator (RI), wherein the RI indicates whether the registration request is to be processed by the first network node.
  • the method further includes processing, by the first network node, the registration request based on the RI.
  • RI Routing Indicator
  • processing the registration request comprises rerouting, by the first network node, the registration request to a second network node of the CN when the RI indicates that the registration request is not to be processed by the first network node.
  • the second network node is identified based on the RI.
  • the identifier is Subscriber Concealed Identifier (SUCI).
  • SUCI Subscriber Concealed Identifier
  • the first network node is a first Access Mobility Function (AMF) and the second network node is a target AMF.
  • AMF Access Mobility Function
  • rerouting the registration request to the target AMF is performed based on a comparison of a dedicated RI of the target AMF with the extracted RI of the identifier, wherein comparison of the dedicated RI of the target AMF with the extracted RI of the identifier eliminates the step of independent communication with at least one authentication node, to decrease time for rerouting the registration request.
  • the system includes a first network node.
  • the first network node includes a receiving unit configured to receive from a User Equipment (UE), the registration request for establishing a connection between the UE and a CN, wherein the registration request comprises an identifier associated with the UE.
  • the system further includes an analysing unit configured to analyse the identifier to extract a Routing Indicator (RI), wherein the RI indicates whether the registration request is to be processed by the first network node.
  • the system further includes a processing unit configured to process the registration request based on the RI.
  • UE User Equipment
  • RI Routing Indicator
  • Yet another aspect of the present disclosure provides a non-transitory computer- readable storage medium storing instruction to reroute a registration request, the storage medium comprising executable code which, when executed by one or more units of a system, causes: a receiving unit to receive from a User Equipment (UE), the registration request for establishing a connection between the UE and a CN, wherein the registration request comprises an identifier associated with the UE; an analysing unit to analyse the identifier to extract a Routing Indicator (RI), wherein the RI indicates whether the registration request is to be processed by the first network node; and a processing unit to process the registration request based on the RI.
  • UE User Equipment
  • RI Routing Indicator
  • FIG. 1 illustrates an exemplary block diagram representation of 5th generation core (5GC) network architecture, in accordance with exemplary embodiment of the present disclosure.
  • FIG. 2 is an exemplary block diagram of system illustrating network node with various functional units or modules, in accordance with an embodiment of the present disclosure.
  • 5GC 5th generation core
  • FIGs. 3A-3B illustrate an exemplary block diagram illustrating process for routing the registration request to a correct AMF based on RI value, in accordance with exemplary embodiments of the present disclosure.
  • FIGs. 4A-4B illustrate another exemplary block diagram illustrating process for routing the registration request to a correct AMF based on RI value, in accordance with exemplary embodiments of the present disclosure.
  • FIG. 5 illustrates an exemplary method flow diagram indicating the process for routing the registration request to a correct AMF based on RI value, in accordance with exemplary embodiments of the present disclosure.
  • exemplary and/or “demonstrative” is used herein to mean serving as an example, instance, or illustration. For the avoidance of doubt, the subject matter disclosed herein is not limited by such examples.
  • any aspect or design described herein as “exemplary” and/or “demonstrative” is not necessarily to be construed as preferred or advantageous over other aspects or designs, nor is it meant to preclude equivalent exemplary structures and techniques known to those of ordinary skill in the art.
  • an “electronic device”, or “portable electronic device”, or “user device” or “communication device” or “user equipment” or “device” refers to any electrical, electronic, electromechanical and computing device.
  • the user device is capable of receiving and/or transmitting one or parameters, performing function/s, communicating with other user devices and transmitting data to the other user devices.
  • the user equipment may have a processor, a display, a memory, a battery and an input-means such as a hard keypad and/or a soft keypad.
  • the user equipment may be capable of operating on any radio access technology including but not limited to IP-enabled communication, Zig Bee, Bluetooth, Bluetooth Low Energy, Near Field Communication, Z-Wave, Wi-Fi, Wi-Fi direct, etc.
  • the user equipment may include, but not limited to, a mobile phone, smartphone, virtual reality (VR) devices, augmented reality (AR) devices, laptop, a general-purpose computer, desktop, personal digital assistant, tablet computer, mainframe computer, or any other device as may be obvious to a person skilled in the art for implementation of the features of the present disclosure.
  • VR virtual reality
  • AR augmented reality
  • the user device may also comprise a “processor” or “processing unit” includes processing unit, wherein processor refers to any logic circuitry for processing instructions.
  • the processor may be a general-purpose processor, a special purpose processor, a conventional processor, a digital signal processor, a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits, Field Programmable Gate Array circuits, any other type of integrated circuits, etc.
  • the processor may perform signal coding data processing, input/output processing, and/or any other functionality that enables the working of the system according to the present disclosure. More specifically, the processor is a hardware processor.
  • Radio Access Technology refers to the technology used by mobile devices/ user equipment (UE) to connect to a cellular network. It refers to the specific protocol and standards that govern the way devices communicate with base stations, which are responsible for providing the wireless connection. Further, each RAT has its own set of protocols and standards for communication, which define the frequency bands, modulation techniques, and other parameters used for transmitting and receiving data. Examples of RATs include GSM (Global System for Mobile Communications), CDMA (Code Division Multiple Access), UMTS (Universal Mobile Telecommunications System), LTE (Long-Term Evolution), and 5G. The choice of RAT depends on a variety of factors, including the network infrastructure, the available spectrum, and the mobile device's/device's capabilities. Mobile devices often support multiple RATs, allowing them to connect to different types of networks and provide optimal performance based on the available network resources.
  • AMF Access and Mobility Management Function
  • 3GPP 5G Architecture the Access and Mobility Management Function
  • the primary tasks of AMF include but not limited to Registration Management, Connection Management, Reachability Management, Mobility Management and various function relating to security and access management and authorization.
  • 'routing indicator (RI)' refers to a set of 1-4 decimal digits assigned by the home network operator and stored in the USIM.
  • the RI is included in the Subscriber Concealed Identifier (SUCI) to facilitate the routing of registration requests within a mobile network.
  • the RI helps determine the appropriate Access and Mobility Management Function (AMF) that should handle the registration request, enabling efficient re-routing without requiring interaction with other network functions such as the Authentication Server Function (AUSF) or the Unified Data Management (UDM).
  • AMF Access and Mobility Management Function
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • PLMN Public Land Mobile Network
  • AMF Access Mobility Function
  • CIoT Cellular Internet of Things
  • Mobility networks operate independently, each with its own set of user data, authentication functions, and mobility management functions.
  • the traditional method of rerouting a UE to another AMF is based on network slicing, a concept that allows the creation of multiple virtual networks on top of a shared physical infrastructure. Each slice caters to a specific set of service requirements and has its own resources and network functions.
  • the present disclosure aims to overcome the above-mentioned and other existing problems in this field of technology by introducing a method and system for efficiently rerouting registration requests in a wireless network, particularly in environments where multiple dedicated isolated networks coexist within a Public Land Mobile Network (PLMN).
  • PLMN Public Land Mobile Network
  • the proposed solution is designed to address the challenges associated with traditional methods of rerouting, which are based on network slicing and often result in delays due to the need for multiple message transactions between network functions for authentication and determination of the correct Access Mobility Function (AMF).
  • AMF Access Mobility Function
  • the present invention provides a novel approach for routing by utilizing a Routing Indicator (RI) embedded in the Subscriber Concealed Identifier (SUCI) of the User Equipment (UE).
  • RI Routing Indicator
  • SUCI Subscriber Concealed Identifier
  • UE User Equipment
  • This RI is used to determine the appropriate AMF for processing the registration request, allowing for direct rerouting of the UE to the correct AMF without the need for communication with the Authentication Server Function (AUSF) or Unified Data Management (UDM).
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • the invention ensures that the authentication process does not fail due to the UE being wrongly routed to a network that does not possess their data.
  • the registration request is rerouted towards a dedicated AMF based on the RI value used in the SUCI, allowing for the assignment of International Mobile Subscriber Identities (IMSIs) with dedicated RIs to specific AMFs without any signalling with other network functions.
  • IMSIs International Mobile Subscriber Identities
  • FIG. 1 illustrates an exemplary block diagram representation of 5th generation core (5GC) network architecture, in accordance with exemplary embodiment of the present disclosure.
  • the 5GC network architecture [100] includes a user equipment (UE) [102], a radio access network (RAN) [104], an access and mobility management function (AMF) [106], a Session Management Function (SMF) [108], a Service Communication Proxy (SCP) [110], an Authentication Server Function (AUSF) [112], a Network Slice Specific Authentication and Authorization Function (NSSAAF) [114], a Network Slice Selection Function (NSSF) [116], a Network Exposure Function (NEF) [118], a Network Repository Function (NRF) [120], a Policy Control Function (PCF) [122], a Unified Data Management (UDM) [124], an application function (AF) [126], a User Plane Function (UPF) [128], a data network (DN) [130], wherein all the components are assumed to be connected
  • UE user equipment
  • the User Equipment (UE) [102] interfaces with the network via the Radio Access Network (RAN) [104]; the Access and Mobility Management Function (AMF) [106] manages connectivity and mobility, while the Session Management Function (SMF) [108] administers session control; the service communication proxy (SCP) [110] routes and manages communication between network services, enhancing efficiency and security, and the Authentication Server Function (AUSF) [112] handles user authentication; the NSSAAF for integrating the 5G core network with existing 4G LTE networks i.e., to enable Non-Standalone (NSA) 5G deployments, the Network Slice Selection Function (NSSF) [116], Network Exposure Function (NEF) [118], and Network Repository Function (NRF) [120] enable network customization, secure interfacing with external applications, and maintain network function registries respectively; the Policy Control Function (PCF) [122] develops operational policies, and the Unified Data Management (UDM) [124] manages subscriber data; the Application Function (AF) [126]
  • PCF
  • Radio Access Network (RAN) [ 104] is the part of a mobile telecommunications system that connects user equipment (UE) [102] to the core network (CN) and provides access to different types of networks (e.g., 5G, LTE). It consists of radio base stations and the radio access technologies that enable wireless communication.
  • UE user equipment
  • CN core network
  • 5G Long Term Evolution
  • LTE Long Term Evolution
  • Access and Mobility Management Function (AMF) is a 5G core network function responsible for managing access and mobility aspects, such as UE registration, connection, and reachability. It also handles mobility management procedures like handovers and paging.
  • Session Management Function (SMF) [108] is a 5G core network function responsible for managing session-related aspects, such as establishing, modifying, and releasing sessions. It coordinates with the User Plane Function (UPF) for data forwarding and handles IP address allocation and QoS enforcement.
  • UPF User Plane Function
  • Service Communication Proxy (SCP) [110] is a network function in the 5G core that facilitates communication between other network functions by providing a secure and efficient messaging service. It acts as a mediator for service-based interfaces.
  • AUSF Authentication Server Function
  • 5G core responsible for authenticating UEs during registration and providing security services. It generates and verifies authentication vectors and tokens.
  • Network Slice Specific Authentication and Authorization Function [114] is a network function that provides authentication and authorization services specific to network slices. It ensures that UEs can access only the slices for which they are authorized.
  • Network Slice Selection Function (NSSF) [116] is a network function responsible for selecting the appropriate network slice for a UE based on factors such as subscription, requested services, and network policies.
  • Network Exposure Function [118] is a network function that exposes capabilities and services of the 5G network to external applications, enabling integration with third-party services and applications.
  • Network Repository Function (NRF) [120] is a network function that acts as a central repository for information about available network functions and services. It facilitates the discovery and dynamic registration of network functions.
  • PCF Policy Control Function
  • Unified Data Management [124] is a network function that centralizes the management of subscriber data, including authentication, authorization, and subscription information.
  • Application Function (AF) is a network function that represents external applications interfacing with the 5G core network to access network capabilities and services.
  • UPF User Plane Function
  • Data Network (DN) refers to a network that provides data services to user equipment (UE) in a telecommunications system.
  • the data services may include but are not limited to Internet services, private data network related services.
  • FIG. 2 an exemplary block diagram of a system [200] illustrating network node (such as AMF [106]) with various functional units or modules, in accordance with an embodiment of the present disclosure is shown.
  • the AMF [106] comprises a receiving unit [202], an analyzing unit [204], and processing unit [206] .
  • all of the components/ units of the system [200] are assumed to be connected to each other unless otherwise indicated below.
  • the system [200] may comprise multiple such units or the system [200] may comprise any such numbers of said units, as required to implement the features of the present disclosure.
  • the system [200] may be present at a network level to implement the features of the present invention.
  • the system [200] may reside in a server or a network entity.
  • the system [200] is configured for routing the registration request to a correct AMF, with the help of the interconnection between the components/units of the system [200] .
  • the AMF [106] of the system [200] is configured to receive the registration request from the UE.
  • the AMF [106] includes a receiving unit [202], The receiving unit [202] is configured to receive a registration request from the User Equipment (UE) [102],
  • the registration request comprises an identifier associated with the UE [102], Examples of identifiers include but not limited only to international mobile equipment identity (IMSI), subscriber concealed identifier (SUCI), subscriber permanent identifier (SUPI), international mobile equipment identity (IMEI), and globally unique temporary identifier (GUTI).
  • IMSI international mobile equipment identity
  • SUCI subscriber concealed identifier
  • SUPI subscriber permanent identifier
  • IMEI international mobile equipment identity
  • GUI globally unique temporary identifier
  • the identifier may contain information that is used by the AMF [106] to determine how to process the registration request, including whether it needs to be rerouted to a different AMF within the network.
  • the reroute refers to the process of redirecting a registration request from the UE to the appropriate AMF [106] within a mobile network.
  • the receiving unit [202] acts as the initial point of contact for the UE [102] within the AMF [106], receiving incoming registration requests and forwarding them for further processing based on the contained identifier.
  • the AMF [106] includes an analysing unit [204] operatively coupled with the receiving unit [202] .
  • the analysing unit [204] is configured to analyse the identifier received in the registration request from the User Equipment (UE) [102],
  • the analysing unit [204] extracts a Routing Indicator (RI) from the identifier that indicates whether the registration request is to be processed by the current AMF [106A] or if it needs to be rerouted to a different AMF [106B] within the Core Network (CN).
  • the RI may assist in directing signalling messages to the correct network entity or network function.
  • the ability to extract and interpret the RI from the identifier enables the AMF [106A or 106B] to handle the registration request, ensuring that it is directed to the appropriate network node for processing. This feature is particularly important in scenarios where multiple dedicated isolated networks exist within a Public Land Mobile Network (PLMN), as it allows for efficient routing of registration requests without the need for extensive communication with other network functions.
  • PLMN Public Land Mobile Network
  • the AMF [106] includes a processing unit [206] operatively coupled with the analysing unit [204] and the receiving unit [202], The processing unit [206] is configured to process the registration request based on the RI extracted by the analysing unit [204] . Once the RI is determined, the processing unit [206] assesses whether the current AMF [106A] is the correct destination to process the registration request. If the RI indicates that the registration request should be processed by the current AMF, the processing unit [206] proceeds with the necessary steps to establish a connection between the User Equipment (UE) [102] and the Core Network (CN).
  • UE User Equipment
  • CN Core Network
  • the processing unit [206] is responsible for rerouting the registration request to the appropriate target AMF [ 106B] .
  • the target AMF identified based on the RI enables the efficient redirection of registration requests to the correct network node, ensuring that the UE [102] is connected to the right part of the network without unnecessary delays or communication with other network functions like the Authentication Server Function (AUSF) or Unified Data Management (UDM).
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • FIGs. 3A-3B an exemplary block diagram for processing of registration request to a correct AMF based on RI value is shown, in accordance with exemplary embodiments of the present disclosure.
  • a user equipment (UE) [302] may attach with AMF1 [106A] or AMF2 [106B] based on processing the registration request with RI value.
  • the UE [302] sends a registration request to the first network node, AMF1 [106A],
  • the receiving unit [202] of the AMF1 receives the registration request.
  • the registration request includes an identifier such as a RI.
  • the analysing unit [204] of the AMF1 [106A] analyses the identifier to determine the RI for indicating whether AMF1 [106A] should process the registration request or reroute it to another AMF, which could be AMF2 [106B] (as shown in FIG. 3B).
  • AMF1 [106A] If the RI matches the dedicated RI of AMF1 [106A], then the processing unit [206] within AMF1 [106A] proceeds to process the registration request, allowing the User Equipment [302] to establish a connection with the Core Network (CN). If the RI does not match, implying that another AMF is to handle the registration, AMF1 [106A] reroutes the registration request to AMF2 [106B], which is identified as the correct network node to process the request based on the RI value (as shown in FIG. 3B).
  • the UE having SUPI with RI-X may be processed by the first AMF i.e., AMF1 while UE having SUPI with non RI-X (non-test SUPIs) may be processed by the second AMF i.e., AMF2.
  • FIGs. 4A-4B an exemplary block diagram for processing of registration request to a correct AMF based on RI value is shown, in accordance with exemplary embodiments of the present disclosure.
  • a user equipment (UE) [402] may attach with AMF1 [106A] or AMF2 [106B] based on processing the registration request with RI value.
  • the UE [402] sends a registration request to the second network node, AMF2 [106B],
  • the receiving unit [202] of the AMF2 receives the registration request.
  • the registration request includes an identifier such as a Routing Indicator (RI).
  • the analysing unit [204] of the AMF2 [ 106B] analyses the identifier to determine the RI for indicating whether AMF2 [ 106B] should process the registration request or reroute it to another AMF, which could be AMF 1 [106A] (as shown in FIG. 4B).
  • the processing unit [206] of the AMF2 [106B] proceeds to process the registration request, allowing the User Equipment [402] to establish a connection with the Core Network (CN). If the RI does not match, implying that another AMF is to handle the registration request, AMF2 [ 106B] reroutes the registration request to AMF1 [106A], which is identified as the correct network node to process the request based on the RI value (as shown in FIG. 4B).
  • the present disclosure facilitates the correct routing of the User Equipment's [102] registration request to the intended Access Mobility Function based on the RI value without necessitating independent communication with other network functions like the Authentication Server Function (AUSF) or Unified Data Management (UDM).
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • FIG. 5 an exemplary method flow diagram [500], for processing and rerouting the registration request at correct AMF based on RI value is shown, in accordance with exemplary embodiments of the present invention is shown.
  • the method [500] is performed by the system [100], As shown in FIG.
  • the method [500] starts at step [502], [0073]
  • the method [500] as disclosed by the present disclosure comprises receiving, at a first network node [106A] from a User Equipment (UE) [102], the registration request for establishing a connection between the UE and a Core Network (CN), wherein the registration request comprises an identifier associated with the UE [102],
  • the network node such as Access Mobility Function (AMF) (e.g., AMF1 [106A] or AMF2 [106B]) receives registration request with identifier Subscriber Concealed Identifier (SUCI) from the UE [102]
  • AMF Access Mobility Function
  • SUCI Subscriber Concealed Identifier
  • the network node(s) AMFs may be part of isolated networks within a PLMN.
  • the registration request comprises an identifier associated with the UE [102],
  • the identifier may contain information that is used by the AMF (such as AMF1[1O6A] or AMF2 [106B]) to determine how to process the registration request, including whether it needs to be rerouted to a different AMF (such as AMF 1 [ 106A] or AMF2 [ 106B] ) within the network.
  • the AMF (such as AMF1[1O6A] or AMF2 [106B]) acts as the initial point of contact for the UE [102], receiving incoming registration requests and forwarding them for further processing based on the contained identifier.
  • the method [500] as disclosed by the present disclosure comprises analysing the identifier to extract a routing indicator (RI), wherein the RI indicates whether the registration request is to be processed by the network node [106A, 106B],
  • the network node such as AMFs (such as AMF1[1O6A] orAMF2 [106B]) analyses the SUCI identifier to extract a PLMN and routing indicator (RI) value, for determining whether the registration request is to be processed by the network node such as AMF1 [106A] or second network node AMF2 [106B],
  • the AMF 1 [ 106A] is configured to process registration request with RI value X
  • AMF2 [ 106A] is configured to other than this value.
  • the ability to extract and interpret the RI from the identifier enables the AMF (such as AMF1[1O6A] of AMF2 [106B])to handle the registration request, ensuring that it is directed to the appropriate network node for processing.
  • AMF such as AMF1[1O6A] of AMF2 [106B]
  • PLMN Public Land Mobile Network
  • the method [500] as disclosed by the present disclosure comprises processing the registration request based on the RI.
  • the AMF such as AMF1[1O6A]
  • AMF such as AMF1[1O6A]
  • AMF1[1O6A] processes the registration request, otherwise AMF (such as AMF1[1O6A]) reroute the registration request to AMF2 [106A] or similarly AMF2 [106A] processes the registration request based on the RI value. If the RI indicates that the registration request should be processed by the current AMF (such as AMF1 [106A]), the processing unit [206] proceeds with the necessary steps to establish a connection between the User Equipment (UE) [102] and the Core Network (CN).
  • UE User Equipment
  • CN Core Network
  • the processing unit of AMF1 is responsible for rerouting the request to the appropriate target AMF [106B] identified based on the RI enables the efficient redirection of registration requests to the correct network node, ensuring that the UE [102] is connected to the right part of the network without unnecessary delays or communication with other network functions like the Authentication Server Function (AUSF) or Unified Data Management (UDM).
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • a user with a 5G smartphone which acts as the user equipment, might be moving in an area where a Consumer loT (CIoT) network and a standard mobility network operate independently.
  • the smartphone sends a registration request to connect to the core network.
  • This request includes a Subscriber Concealed Identifier (SUCI), which contains a Routing Indicator (RI) among other details.
  • SUCI Subscriber Concealed Identifier
  • RI Routing Indicator
  • the first network node an Access Mobility Function (AMF) receives this registration request.
  • the AMF analyzes the SUCI to extract the RI to determine if it's the correct AMF to handle this request. If the extracted RI matches the AMF’s assigned RI, indicating that this is the correct AMF, the registration request is processed, and the user is connected to the core network.
  • AMF Access Mobility Function
  • the invention streamlines the process by rerouting the registration request to the correct or target AMF based on the RI without needing to communicate with the Authentication Server Function (AUSF) or Unified Data Management (UDM). This avoids the usual delays in the redirection process, which involves multiple message transactions and authentication steps.
  • AUSF Authentication Server Function
  • UDM Unified Data Management
  • the first AMF will reroute the registration request to the CIoT- dedicated AMF.
  • This dedicated AMF will then process the registration request without querying the AUSF or UDM, expediting the user's connection to the correct network slice tailored for loT devices. This method eliminates the need for additional signaling between network functions, thus reducing the time taken for rerouting and increasing the overall efficiency of the network.
  • An aspect of the present disclosure provides a non-transitory computer-readable storage medium storing instruction to reroute a registration request, the storage medium comprising executable code which, when executed by one or more units of a system, causes: a receiving unit [202] to receive from a User Equipment (UE) [102], the registration request for establishing a connection between the UE and a CN, wherein the registration request comprises an identifier associated with the UE [102]; an analysing unit [204] to analyse the identifier to extract a Routing Indicator (RI), wherein the RI indicates whether the registration request is to be processed by the first network node; and a processing unit [206] to process the registration request based on the RI.
  • UE User Equipment
  • RI Routing Indicator
  • the present disclosure provides a technically advanced solution for routing the registration request based on the value of the RI configured in the SUCI.
  • the present disclosure overall efficiently enhances the capability of the network by preventing any delay during the registration process.
  • the proposed invention allows UE to be re-routed to correct AMF without communication with AUSF/UDM. This reduces the delay in redirecting the user as the redirection takes place before authentication itself. This allows to avoid several message transactions which are required for other methods of redirection.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne un procédé et un système de routage d'une demande d'enregistrement dans un réseau sans fil. Le procédé consiste à recevoir, au niveau d'un premier nœud de réseau [106A] en provenance d'un équipement utilisateur (UE) [102], la demande d'enregistrement permettant d'établir une connexion entre l'UE et un réseau central (CN), la demande d'enregistrement comprenant un identifiant associé à l'UE [102] ; le procédé consiste également à analyser, par le premier nœud de réseau [106A], l'identifiant pour extraire un indicateur de routage (RI), le RI indiquant si la demande d'enregistrement doit être traitée par le premier nœud de réseau [106A] ; et le procédé consiste en outre à traiter, par le premier nœud de réseau [106A], la demande d'enregistrement sur la base du RI.
PCT/IN2024/050740 2023-07-03 2024-06-11 Procédé et système de routage de demande d'enregistrement dans un réseau sans fil Pending WO2025008870A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1595408B1 (fr) * 2003-02-19 2008-08-20 Nokia Corporation Acheminement dans un réseau d'accès radio relié à une pluralité de réseaux de coeur
CN101448297B (zh) * 2008-03-14 2010-12-08 中兴通讯股份有限公司 组合网元的路由方法
US20110007748A1 (en) * 2008-03-31 2011-01-13 Huawei Technologies Co., Ltd Method, system and apparatus for optimizing routes
US20130203414A1 (en) * 2007-07-18 2013-08-08 Zte Corporation Mobile Terminal Registration Method in a Radio Network
KR20180106998A (ko) * 2017-03-21 2018-10-01 한국전자통신연구원 등록 지역을 최적화하는 통신 시스템 및 상기 통신 시스템에서의 등록 방법
CN114390667A (zh) * 2020-10-21 2022-04-22 华为技术有限公司 网络注册的方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1595408B1 (fr) * 2003-02-19 2008-08-20 Nokia Corporation Acheminement dans un réseau d'accès radio relié à une pluralité de réseaux de coeur
US20130203414A1 (en) * 2007-07-18 2013-08-08 Zte Corporation Mobile Terminal Registration Method in a Radio Network
CN101448297B (zh) * 2008-03-14 2010-12-08 中兴通讯股份有限公司 组合网元的路由方法
US20110007748A1 (en) * 2008-03-31 2011-01-13 Huawei Technologies Co., Ltd Method, system and apparatus for optimizing routes
KR20180106998A (ko) * 2017-03-21 2018-10-01 한국전자통신연구원 등록 지역을 최적화하는 통신 시스템 및 상기 통신 시스템에서의 등록 방법
CN114390667A (zh) * 2020-10-21 2022-04-22 华为技术有限公司 网络注册的方法

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