User equipment routing policy handling method and user equipment

Abstract

A method of handling URSP rules received from a non-subscribing SNPN using credentials from a CH is provided. A UE can be pre-configured with URSP rules by a UE home network, or the UE first registers to a home network and obtains signaled URSP rules from the home network. Then, the UE can register to a non-subscribing SNPN using credentials from a CH. Before establishing a PDU session, the UE checks the corresponding URSP rules that can be used in the SNPN. If the registered non-subscribing SNPN sends URSP rules to the UE, the UE can use the URSP rules in the following priority order: 1) URSP rules signaled from the non-subscribing SNPN, 2) URSP rules signaled from the home network, and 3) URSP rules pre-configured by the home network.

Description

Technical Field

[0001] Embodiments of the present invention generally relate to wireless mobile communication networks, and more specifically, to a method for providing and processing a UE Route Selection Policy (URSP) for a UE registered in a stand-alone non-public network (SNPN) using credentials from a credentials holder (CH). Background Technology

[0002] A Public Land Mobile Network (PLMN) is a network established and operated by a regulatory authority or recognized operating agency (ROA) with the specific purpose of providing terrestrial mobile communication services to the public. A PLMN provides communication capabilities to mobile users. A PLMN can provide services in a single frequency band or a combination of frequency bands. Access to PLMN services is achieved through an air interface, which involves radio communication between mobile phones and base stations with integrated IP network services. A PLMN may include multiple Radio Access Networks (RANs) that utilize different radio access technologies (RATs) to access mobile services. A radio access network is part of the mobile communication system that implements the radio access technologies. Conceptually, the RAN resides between mobile devices and provides connectivity to its core network (CN). According to standards, mobile phones and other wirelessly connected devices are referred to as UEs, terminal devices, mobile stations (MS), etc. Examples of different RATs include 2nd Generation (2G) GERAN (Global System for Mobile Communications, GSM) radio access network, 3rd Generation (3G) Universal Terrestrial Radio Access Network (UTRAN) (Universal Mobile Telecommunications System, UMTS) radio access network, 4th Generation (4G) Evolved Universal Terrestrial Radio Access Network (E-UTRAN) (Long-Term Evolution, LTE) (Long-Term Evolution, LTE) (Long-Term Evolution, LTE) (Long-Term Evolution, LTE) (Long-Term Evolution, 5th Generation, 5G) New Radio (NR) radio access network, and other non-3rd generation partner project (3GPP) access RATs, including Wireless Fidelity (WiFi).

[0003] Compared to a PLMN, a non-public network (NPN) is a 5G system (5GS) network deployed for non-public use. An NPN can be a standalone non-public network (SNPN), operated by an NPN operator and not reliant on network functions provided by a PLMN; an NPN can also be a Public Network Integrated NPN (NPI-NPN), a non-public network deployed with PLMN support. An SNPN is identified by a combination of the PLMN ID and the NID. NID information refers to the entire NID value or a portion of the NID value (e.g., the first digit of the NID value). UEs that enable SNPNs select an SNPN configured with a subscriber identifier and credentials. A UE can have multiple sets of subscriber identifiers, credentials, and SNPN identifiers.

[0004] The 5G system enables the NPN to request a third-party service operator to perform NPN authentication on the UE based on the identity and / or credentials provided by the third-party service operator. The 5G system also enables the NPN to request the PLMN to perform NPN authentication on the UE based on the identity and / or credentials provided by the PLMN. Furthermore, the 5G system enables the SNPN to request another SNPN (third-party service operator) to perform SNPN authentication on the UE based on the identity and / or credentials provided by that SNPN. Specifically, a UE with SNPN enabled can support accessing the SNPN using credentials from a credential holder.

[0005] The UE uses URSP to determine how to route outgoing services. When the UE registers with an HPLMN / VPLMN or with an SNPN it has subscribed to, the HPLMN or SNPN provides URSP rules to the UE via pre-configuration or signaling. The UE uses these URSP rules to establish Protocol Data Unit (PDU) sessions for applications accessing services. However, it is unclear how URSP rules are provided to the UE in a CH scenario (i.e., when the UE accesses the SNPN using credentials from the CH). Therefore, no URSP rules have been found to be used when the UE wants to access the SNPN using credentials from the CH and establish a PDU session for an application after registering with the SNPN.

[0006] Furthermore, when a UE wishes to establish a PDU session for an application in the PLMN, the UE uses URSP rules in the following order: 1) Signaled URSP rules provided by the PLMN's PCF; 2) Pre-configured URSP rules provided by the PLMN; and 3) If neither a pre-configured nor a Signaled URSP rule is found, local configuration is performed. When a UE wishes to establish a PDU session for an application in the SNPN, the UE uses URSP rules in the following order: 1) Signaled URSP rules provided by the SNPN's PCF; 2) Pre-configured URSP rules provided by the SNPN; and 3) If neither a pre-configured nor a Signaled URSP rule is found, local configuration is performed. However, the order of URSP rules provided by the non-subscribed SNPN registered using credentials from the CH is not specified for the UE.

[0007] A solution needs to be sought. Summary of the Invention

[0008] According to a novel aspect, a method is provided for receiving URSP rules from a non-subscription SNPN registered using credentials from a CH. After a UE registers with a non-subscription SNPN using credentials from a CH, the UE can establish a PDU session for accessing services in the SNPN. Before establishing the PDU session, the UE checks the appropriate URSP rules that can be used in the SNPN. If the registered non-subscription SNPN sends URSP rules to the UE, the UE should store the URSP rules and then apply these URSP rules to the PDU session establishment when the UE accesses services in the non-subscription SNPN.

[0009] In one embodiment, the UE selects a non-subscription SNPN, where the UE can access the non-subscription SNPN using credentials from the CH. The UE registers to the non-subscription SNPN using credentials provided by the CH. The UE receives a first set of URSP rules from the non-subscription SNPN. The UE establishes a PDU session based on the first set of URSP rules from the non-subscription SNPN.

[0010] According to another novel aspect, a method is provided for processing URSP rules received from a non-subscription SNPN registered using credentials from the CH. The UE can have the URSP rules pre-configured by its home network, or the UE can first register with its home network and obtain the URSP rules for notification from the home network. The UE can then register with the non-subscription SNPN using credentials from the CH. Before establishing a PDU session, the UE checks the appropriate URSP rules that can be used in the SNPN. If the registered non-subscription SNPN sends URSP rules to the UE, the UE can use the URSP rules in the following priority order: 1) URSP rules for notification from the non-subscription SNPN, 2) URSP rules for notification from the home network, and 3) URSP rules pre-configured by the home network.

[0011] In another embodiment, the UE obtains a first set of URSP rules from a non-subscribed SNPN, where the UE is registered to the non-subscribed SNPN using credentials from the CH. The UE maintains a second set of URSP rules from its home network. The UE determines that the first set of URSP rules has a higher priority than the second set of URSP rules. The UE establishes a PDU session based on the first set of URSP rules obtained from the non-subscribed SNPN.

[0012] Other embodiments and advantages are described in the following detailed description. This summary is not intended to define the invention. The invention is defined by the claims. Attached Figure Description

[0013] Figure 1 A communication system with SNPN and supporting access to and processing of SNPN-enabled UEs using credentials from CH and URSP is illustrated schematically.

[0014] Figure 2 A simplified block diagram of a UE and network entities according to an embodiment of the present invention is described.

[0015] Figure 3 It describes the URSP rules defined in the 3GPP specifications, as well as the content provided and processed according to the URSP rules based on novel aspects.

[0016] Figure 4 An implementation method for UE support to access using credentials from CH provided by SNPN and URSP is described, based on novel aspects.

[0017] Figure 5 An implementation of a novel approach to UE support for access to SNPN and URSP processing using credentials from the CH is described.

[0018] Figure 6 A flowchart describing a method for providing URSP rules from a non-subscription SNPN registered using credentials from CH, according to a novel aspect of the present invention, is provided.

[0019] Figure 7 A flowchart illustrating a method for processing URSP rules of a non-subscribed SNPN registered using credentials from CH, according to a novel aspect of the present invention. Detailed Implementation

[0020] Reference will now be made in detail to some embodiments of the present invention, examples of which are shown in the accompanying drawings.

[0021] Figure 1 A communication system 100, based on novel aspects, is illustrated with an SNPN 110 and supporting access to an SNPN-enabled UE 11 provided and processed using credentials from a CH (CH). The SNPN 110 includes control plane functions, user plane functions (UPF), and an application server that provides various services through communication with multiple UEs, including UE 111. UE 111 and its serving base station gNB 112 are part of a radio access network RAN ​​130. RAN 130 provides radio access to UE 111 via a RAT, such as 3GPP access and non-3GPP access. The access and mobility management function (AMF) in the SNPN 110 communicates with gNB 112. UE 111 is configured with a radio frequency (RF) transceiver or multiple RF transceivers for different application services via different RATs.

[0022] The 5G system enables the NPN to request a third-party service operator to perform NPN authentication on the UE based on the identity and / or credentials provided by the third-party service operator. The 5G system also enables the NPN to request a PLMN to perform NPN authentication on the UE based on the identity and / or credentials provided by the PLMN. Furthermore, the 5G system enables the SNPN to request another SNPN (third-party service operator) to perform SNPN authentication on the UE based on the identity and / or credentials provided by that SNPN. Specifically, a UE with SNPN enabled can support accessing the SNPN using credentials from a credential holder. Such a UE can be configured with a "subscriber data list" including one or more entries. Each entry in the subscriber data list also includes an SNPN selection parameter for accessing the SNPN using the credential holder's credentials.

[0023] The UE uses URSP to determine how to route outgoing services. When the UE registers with an HPLMN / VPLMN or with an SNPN it has subscribed to, the HPLMN or SNPN provides URSP rules to the UE either through pre-configuration or signaling. The UE uses these URSP rules to establish PDU sessions for applications accessing services. However, it is unclear how URSP rules are provided to the UE in a CH scenario (i.e., when the UE accesses the SNPN using credentials from the CH). Therefore, no URSP rules have been found to be used when the UE wants to access the SNPN using credentials from the CH and then establish a PDU session for an application.

[0024] According to a novel aspect, a method (150) is provided for receiving URSP rules from a non-subscription SNPN registered using credentials from the CH. After UE 111 registers with the non-subscription SNPN using credentials from the CH, UE 111 can establish a PDU session for accessing services in the SNPN. Before establishing the PDU session, UE 111 checks the appropriate URSP rules that can be used in the SNPN. If the registered non-subscription SNPN sends URSP rules to UE 111, the UE should store the URSP rules and then apply these URSP rules to the PDU session establishment.

[0025] When a UE wants to establish a PDU session for an application in a PLMN, the UE uses URSP rules in the following order: 1) URSP rules for notification provided by the PLMN's PCF; 2) pre-configured URSP rules provided by the PLMN; and 3) if neither pre-configured nor notification URSP rules are found, local configuration is performed. When a UE wants to establish a PDU session for an application in an SNPN, the UE uses URSP rules in the following order: 1) URSP rules for notification provided by the SNPN's PCF; 2) pre-configured URSP rules provided by the SNPN; and 3) if neither pre-configured nor notification URSP rules are found, local configuration is performed. However, no specific order is specified for the UE to use URSP rules provided by the registered non-subscribed SNPN using credentials from the CH.

[0026] According to another novel aspect, a method (160) is provided for processing URSP rules from a non-subscribed SNPN registered using credentials from a CH. The UE 111 may have URSP rules pre-configured by its home network, or the UE 111 may first register with its home network and obtain URSP rules for mailing notifications from the home network. The UE may then register with a non-subscribed SNPN using credentials from a CH. Before establishing a PDU session, the UE checks the appropriate URSP rules that can be used in the SNPN. If the registered non-subscribed SNPN sends URSP rules to the UE, the UE may use the URSP rules in the following priority order (170): 1) URSP rules sent from the non-subscribed SNPN, 2) URSP rules sent from the home network, and 3) URSP rules pre-configured by the home network. The home network may be a PLMN or another subscribed SNPN.

[0027] Figure 2 A simplified block diagram of a wireless device (e.g., UE 201 and network entity 211) according to an embodiment of the present invention is described. Network entity 211 may be a base station combined with an MME / AMF. Network entity 211 has an antenna 215 that transmits and receives radio signals. An RF transceiver 214 is coupled to the antenna 215, receives RF signals from the antenna 215, converts them into baseband signals, and sends them to a processor 213. The RF transceiver 214 also converts baseband signals received from the processor 213, converts them into RF signals, and sends them to the antenna 215. The processor 213 processes the received baseband signals and invokes different functional modules to perform functions within network entity 211. Memory 212 stores program instructions and data 220 to control the operation of network entity 211. Figure 2 In the example, network entity 211 also includes a set of control function modules and circuitry 290. Registration processing circuitry 231 handles the registration and mobility process. Session management circuitry 232 handles session management functions. Configuration and control circuitry 233 provides various parameters for configuring and controlling the UE. Protocol stack 280 includes a NAS layer for communicating with MME / AMF entities connected to the core network, a Radio Resource Control (RRC) layer for higher-level configuration and control, a Packet Data Convergence Protocol / Radio Link Control (PDCP / RLC) layer, a Media Access Control (MAC) layer, and a Physical (PHY) layer.

[0028] Similarly, UE 201 includes memory 202, processor 203, and RF transceiver 204. RF transceiver 204 is coupled to antenna 205, receives RF signals from antenna 205, converts them into baseband signals, and sends them to processor 203. RF transceiver 204 also converts baseband signals received from processor 203 into RF signals and sends them to antenna 205. Processor 203 processes the received baseband signals and invokes different functional modules and circuits to perform functions in UE 201. Memory 202 stores program instructions and data 210 executed by the processor to control the operation of UE 201. Memory 202 also includes SIM / USIM 225. Suitable processors include, for example, special-purpose processors, digital signal processors (DSPs), multiple microprocessors, one or more microprocessors associated with a DSP core, controllers, microcontrollers, application-specific integrated circuits (ASICs), file-programmable gate arrays (FPGAs), and other types of integrated circuits (ICs) and / or state machines. The features of UE 201 can be implemented and configured using a software-associated processor.

[0029] UE 201 also includes a set of functional modules and control circuits that perform UE 201 functional tasks. Protocol stack 260 includes a NAS layer for communicating with MME / AMF entities connected to the core network, an RRC layer for higher-level configuration and control, a PDCP / RLC layer, a MAC layer, and a PHY layer. System modules and circuits 270 can be implemented and configured by hardware, firmware, software, or any combination thereof. When the processor executes functional modules and circuits via program instructions in memory, they cooperate to enable UE 201 to perform implementation schemes, functional tasks, and features in the network. In one example, system modules and circuits 270 include registration circuitry 221 that performs registration and mobility procedures with the network, PDU session and URSP processing circuitry 222 that handles PDU session establishment, URSP provisioning, priority, and rule matching, and configuration and control circuitry 223 that handles configuration and control parameters related to SNPN selection, registration, and URSP rule management.

[0030] Figure 3This describes the URSP rules defined in the 3GPP specification and the content provided and processed according to the novel aspects of URSP rules. An URSP is defined as a set of one or more URSP rules. As shown in Table 300, each URSP rule consists of the following: 1) a priority value for the URSP rule, which identifies the priority of the URSP rule among all existing URSP rules; 2) a service descriptor; and 3) one or more routing descriptors. Service descriptors include 1) match all service descriptors; or 2) at least one of the following components: A) one or more application identifiers; B) one or more IP 3-tuples, i.e., destination IP address, destination port number, and protocol used on the IP; C) one or more non-IP descriptors, i.e., destination information for non-IP services; D) one or more DNNs; E) one or more connection performance parameters; and F) one or more domain descriptors, i.e., destination FQDNs. Each routing descriptor includes a priority value for the routing descriptor and 1) a PDU session type, optionally including one or more of the following: a) SSC mode; b) one or more S-NSSAI; c) one or more DNNs; d) preferred access type; and e) multi-access preference; or 2) non-seamless non-3GPP offload indication. Only one URSP rule in the URSP is the default URSP rule, and the default URSP rule should contain all matching service descriptors. If the URSP contains a default URSP rule (i.e., a URSP rule with "matches all" service descriptors) and one or more non-default URSP rules (i.e., URSP rules without "matches all" service descriptors), then the priority value (i.e., the higher priority) of any non-default URSP rule should be lower than that of the default URSP.

[0031] When a UE wishes to establish a PDU session for an application in a PLMN or SNPN, the UE uses URSP rules in the following order: 1) URSP rules for notification provided by the PCF of the PLMN or SNPN; 2) pre-configured URSP rules provided by the PLMN or SNPN; and 3) if neither pre-configured URSP rules nor notification URSP rules are found, local configuration is performed. When a UE registers to a non-subscribed SNPN using credentials provided by the CH, the UE can receive notification URSPs from the non-subscribed SNPN. In response, the UE stores the notification URSP rules for later use (as shown in box 310), for example, when establishing a PDU session in a non-subscribed SNPN. Furthermore, if the UE is provided with additional URSP rules from the home network, the UE can use the URSP rules in the following priority order (as shown in box 320): 1) URSP rules for notification from the non-subscribed SNPN; 2) URSP rules for notification from the home network; and 3) URSPs pre-configured by the home network.

[0032] Figure 4 An implementation method according to novel aspects of UE 401 supporting access to SNPN 402 using credentials from CH and the corresponding URSP is described. In step 411, UE 401 obtains the configuration of the subscriber data list (e.g., configured by the network). UE 401 selects a non-subscription SNPN 402 according to the SNPN selection procedure. In step 421, UE 401 sends a registration request message to the selected non-subscription SNPN 402. The UE registers using credentials provided by a credential holder, which can be a PLMN or another SNPN. In step 422, after verifying the registration credentials, UE 401 receives a registration acceptance and successfully registers to SNPN 402.

[0033] After UE 401 successfully registers to non-subscription SNPN 402, the UE wishes to establish a PDU session for accessing services in SNPN 402 (step 431). Before UE 401 begins establishing a PDU session in the non-subscription SNPN, the UE needs to check the appropriate URSP rules available in that non-subscription SNPN (step 432). In step 441, UE 401 receives URSP configuration, for example, a set of URSP rules notified from non-subscription SNPN 402. Therefore, UE 401 stores the URSP rules. In step 451, UE 401 establishes a PDU session based on the stored URSP rules notified from non-subscription SNPN 402. Note that traditionally, a UE can reject URSP rules received from a non-subscription SNPN. However, when a UE registers to a non-subscription SNPN using credentials from the CH (CH) credential, the UE is considered a subscriber to the registered non-subscription SNPN. Furthermore, the non-subscription SNPN should have a more comprehensive understanding of which services the UE can access than the UE's home network within the non-subscription SNPN. Therefore, URSP rules provided by a non-subscribed SNPN should be more appropriate than rules provided by the UE's home network.

[0034] Figure 5 An implementation of a novel approach for UE to support access to an SNPN and URSP processing using credentials from the CH is described. In step 510, UE 501 may have URSP rules pre-configured by its home network. In step 511, UE 501 registers with its home network and obtains / stores the URSP configuration, such as URSP rules for sending notifications from the home network. In step 521, UE 501 selects a non-subscribed SNPN based on the SNPN selection procedure and registers with the non-subscribed SNPN using credentials provided by the credential holder. UE 501 also obtains / stores the URSP configuration, such as URSP rules for sending notifications from the non-subscribed SNPN. After UE 501 successfully registers with the non-subscribed SNPN, UE 501 may wish to establish a PDU session for accessing services in the SNPN (step 531).

[0035] Before UE 501 begins establishing a PDU session in a non-subscribed SNPN, UE 501 needs to check the corresponding URSP rules that can be used in that non-subscribed SNPN. The URSP rules stored in the UE can be any of the following: A) pre-configured by the UE's home network, B) notified by the UE's home network, and / or C) notified by the non-subscribed SNPN (step 532). If the UE has any two of the above URSP rules, the UE needs to follow the following order: 1) the URSP rule notified from the non-subscribed SNPN; 2) the URSP rule notified from the UE's home network; and 3) the URSP rule pre-configured by the UE's home network (step 533). Therefore, UE 501 selects the URSP rule with the highest priority. In step 541, UE 501 establishes a PDU session based on the selected URSP rule with the highest priority. Since the non-subscribed SNPN has all the knowledge of which services can be used and accessed by the UE, the URSP rules provided by the non-subscribed SNPN are more suitable for the UE to access the services provided by the non-subscribed SNPN.

[0036] Figure 6 This is a flowchart describing a method for providing URSP rules from a non-subscription SNPN registered using credentials from a CH according to a novel aspect of the present invention. In step 601, the UE selects a non-subscription SNPN, wherein the UE is capable of accessing a non-subscription SNPN using credentials from a CH. In step 602, the UE registers with the non-subscription SNPN using credentials provided by a credential holder. In step 603, the UE receives a first set of URSP rules from the non-subscription SNPN. In step 604, the UE establishes a PDU session based on the first set of URSP rules from the non-subscription SNPN.

[0037] Figure 7This is a flowchart describing a method for processing URSP rules from a non-subscribed SNPN registered using credentials from a credential holder, according to a novel aspect of the present invention. In step 701, the UE obtains a first set of URSP rules from the non-subscribed SNPN, wherein the UE is registered to the non-subscribed SNPN using credentials from a credential holder. In step 702, the UE maintains a second set of URSP rules from the home network. In step 703, the UE determines that the first set of URSP rules has a higher priority than the second set of URSP rules. In step 704, the UE establishes a PDU session based on the first set of URSP rules obtained from the non-subscribed SNPN. In some embodiments, the first set of URSP rules (URSP rules from the non-subscribed SNPN) and the second set of URSP rules (URSP rules from the home network) are non-default URSP rules. In some embodiments, the UE maintains a third set of URSP rules from the home network (URSP rules pre-configured from the home network), where the second set of URSP rules has a higher priority than the third set of URSP rules when the UE establishes a PDU session.

[0038] Although the invention has been described in conjunction with certain specific embodiments for guiding purposes, the invention is not limited thereto. Therefore, various modifications, adaptations, and combinations of various features of the described embodiments can be made without departing from the scope of the invention as set forth in the claims.

Claims

1. A method for processing user equipment routing selection strategies, characterized in that, include: User equipment obtains a first set of user equipment routing policy rules from a non-subscription independent non-public network, wherein the user equipment registers to the non-subscription independent non-public network using credentials from a credential holder; The user equipment maintains a second set of user equipment routing policy rules from its home network; When matching the application's services with the protocol data unit session, it is determined that the first group of user equipment routing policy rules has a higher priority than the second group of user equipment routing policy rules in the rule evaluation; as well as The protocol data unit session is established based on the first set of user equipment routing policy rules obtained from the non-subscription independent non-public network.

2. The user equipment routing policy processing method as described in claim 1, characterized in that, The home network is the credential holder and is a public land mobile network.

3. The user equipment routing policy processing method as described in claim 1, characterized in that, The home network is the credential holder and is another independent, non-public network.

4. The user equipment routing policy processing method as described in claim 1, characterized in that, The second set of user equipment routing policy rules is pre-configured by the home network holding the credentials.

5. The user equipment routing policy processing method as described in claim 1, characterized in that, When the user equipment registers with the home network that holds the credential, it sends a notification from the home network that holds the credential to the second group of user equipment routing policy rules.

6. The user equipment routing policy processing method as described in claim 1, characterized in that, The first group of user equipment routing policy rules and the second group of user equipment routing policy rules are non-default user equipment routing policy rules.

7. The user equipment routing policy processing method as described in claim 1, characterized in that, When the user equipment registers with the home network holding the credential, it sends a notification from the home network to the second group of user equipment routing policy rules, further including: Maintain a third set of user equipment routing policy rules pre-configured by the home network holding the credentials.

8. The user equipment routing policy processing method as described in claim 7, characterized in that, When the user equipment establishes the protocol data unit session, the user equipment prioritizes the first group of user equipment routing policy rules over the second group of user equipment routing policy rules, and prioritizes the second group of user equipment routing policy rules over the third group of user equipment routing policy rules.

9. A user equipment for processing routing policy for user equipment, comprising: User equipment routing policy processing circuitry obtains a first set of user equipment routing policy rules from a non-subscription independent non-public network, wherein the user equipment is registered to the non-subscription independent non-public network using credentials from a credential holder; The user equipment routing policy processing circuit maintains a second set of user equipment routing policy rules from the home network; The configuration and control circuitry determines that the first set of user equipment routing policy rules has a higher priority than the second set of user equipment routing policy rules in rule evaluation when matching the applied services with protocol data unit sessions. as well as The Protocol Data Unit (PDU) session processing circuit establishes a PDU session based on the first set of user equipment routing policy rules obtained from the non-subscribed independent non-public network.

10. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, The home network is the credential holder and is a public land mobile network.

11. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, The home network is the credential holder and is another independent, non-public network.

12. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, The second set of user equipment routing policy rules is pre-configured by the home network holding the credentials.

13. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, When the user equipment registers with the home network that holds the credential, it sends a notification from the home network that holds the credential to the second group of user equipment routing policy rules.

14. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, The first group of user equipment routing policy rules and the second group of user equipment routing policy rules are non-default user equipment routing policy rules.

15. The user equipment for user equipment routing policy processing as described in claim 9, characterized in that, When the user equipment registers with the home network holding the credential, it sends a notification from the home network to the second set of user equipment routing policy rules, wherein the user equipment maintains a third set of user equipment routing policy rules pre-configured by the home network holding the credential.

16. The user equipment for user equipment routing policy processing as described in claim 15, characterized in that, When establishing the Protocol Data Unit session, the user equipment prioritizes the first group of user equipment routing policy rules over the second group of user equipment routing policy rules, and prioritizes the second group of user equipment routing policy rules over the third group of user equipment routing policy rules.

17. A computer-readable storage medium for user equipment routing policy processing, storing program instructions that, when executed, cause the user equipment to perform the steps of the user equipment routing policy processing method according to claims 1-8.

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