Method for establishing a protocol data unit session

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify that it is operating in a dual subscription mode including a first subscription and a second subscription. In some cases, the UE may include an application requesting establishment of a data connection based on an access preference rule of the application. The UE may determine that the access preference rule lacks a match between policies of a first routing selection policy associated with a first subscription (e.g., a default subscription). The UE may then evaluate a second routing selection policy associated with a second subscription against policies that match the access preference rule based on determining the lack of a match between policies of the first routing selection policy. After evaluating the second routing selection policy against the matching policy, the UE may establish a data connection.

Description

Technical Field

[0001] The following relates generally to wireless communications, and more particularly to methods of establishing a protocol data unit (PDU) session. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support the communication of multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of these multiple access systems include fourth generation (4G) systems, such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems or LTE-A Pro systems, and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices, which may be otherwise referred to as user equipment (UE).

[0003] A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices, which may be otherwise referred to as UEs. In some wireless communication systems, a UE may support communication with a base station using multiple radio access technologies (RATs) (such as 5G, LETS, etc.). Improved techniques for communicating with a base station using one or more RATs at a UE may be desirable. Summary of the invention

[0004] The described technology relates to improved methods, systems, devices and apparatuses for supporting the establishment of protocol data unit (PDU) sessions. In general, the described technology provides for establishing a wireless connection of a user equipment (UE) (e.g., a dual subscription dual standby (DSDS) UE) that supports communication with a base station using multiple radio access technologies (RATs). The DSDS UE can operate in a dual subscription mode, where each subscription corresponds to a subscriber identity module (SIM) of the UE. The UE can establish a data connection via a first subscription or a second subscription. When an application of the UE requests to establish a data connection with a network, the application can indicate an access preference rule to be used when establishing the connection. In order to establish the connection, the UE can compare the access preference rule of the application with the policy of the UE routing selection policy (URSP) associated with the default subscription (e.g., the first subscription). If the UE determines that the access preference rule of the application lacks a match between the policy of the URSP associated with the default subscription, the UE can evaluate the URSP of the second subscription for the policy matching the access preference rule of the application. If there is a match, the UE can update the default subscription to the second subscription and can establish a connection with the network via the second subscription. In some cases, the UE may prompt the user to determine whether to switch the default subscription to the second subscription. Here, if the user indicates to maintain the default subscription as the first subscription, the UE may avoid switching the default subscription to the second subscription.

[0005] A method of wireless communication at a UE is described. The method may include: identifying that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting establishment of a data connection according to an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; based on the lack of a match between policies of the first routing selection policy, evaluating a second routing selection policy associated with the second subscription against matching policies of the matching access preference rule; and establishing the data connection after evaluating the second routing selection policy.

[0006] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to perform the following items: identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application; determine that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; based on the lack of a match between policies of the first routing selection policy, evaluate a second routing selection policy associated with the second subscription against a matching policy that matches the access preference rule; and establish the data connection after evaluating the second routing selection policy.

[0007] Another apparatus for wireless communication at a UE is described. The apparatus may include components for performing the following: identifying that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting establishment of a data connection according to an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; based on the lack of a match between policies of the first routing selection policy, evaluating a second routing selection policy associated with the second subscription against matching policies of the matching access preference rule; and establishing the data connection after evaluating the second routing selection policy.

[0008] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting establishment of a data connection according to an access preference rule of the application; determine that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; based on the lack of a match between policies of the first routing selection policy, evaluate a second routing selection policy associated with the second subscription against matching policies of the matching access preference rule; and establish the data connection after evaluating the second routing selection policy.

[0009] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining, based on an evaluation, that a second routing selection policy includes a matching policy that matches an access preference rule, wherein a data connection may be established via a second subscription based on the second routing selection policy including the matching policy.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for updating a default subscription of the UE from a first subscription to a second subscription based on a second routing policy including a matching policy.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for prompting a user of the UE to select a default subscription for the UE from a first subscription and a second subscription based on determining that the second routing selection strategy includes a matching strategy; and receiving an indication of the second subscription from the user, wherein the default subscription of the UE can be updated to the second subscription based on receiving the indication of the second subscription from the user.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for establishing a data connection via a second subscription based on updating a default subscription of the UE from a first subscription to a second subscription, the update including a matching policy based on a second routing policy.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining, based on an evaluation, that the second routing selection policy includes a matching policy that matches an access preference rule; maintaining the first subscription as a default subscription for the UE after determining that the second routing selection policy includes a matching policy; and establishing a data connection via the first subscription based on determining that the first subscription is maintained as a default subscription for the UE.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for prompting a user of the UE to select a default subscription for the UE from a first subscription and a second subscription based on determining that the second routing selection strategy includes a matching strategy; and receiving an indication of the first subscription from the user, wherein maintaining the first subscription as the default subscription for the UE can be based on receiving an indication of the first subscription from the user.

[0015] Some examples of methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for selecting a default policy for application from policies of the first routing policy, wherein establishing the data connection via the first subscription may be based on the default policy.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining, based on the evaluation, that the second routing selection policy lacks a matching policy that matches the access preference rule, and establishing a data connection via the first subscription based on the second routing selection policy lacking a matching policy.

[0017] Some examples of methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for selecting a default policy for application from policies of the first routing policy, wherein establishing the data connection via the first subscription may be based on the default policy.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for identifying that the first subscription may be a default subscription for the UE, and evaluating the first routing policy against a matching policy based on the first subscription being the default subscription.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first subscription may be configured to provide a first data connection associated with a first quality of service for an application, and a second subscription may be configured to provide a second data connection associated with a second quality of service for the application, the second quality of service being higher than the first quality of service.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, establishing a data connection may also include operations, features, components, or instructions for sending a PDU setup request message to a core network to establish a data connection and receiving a PDU setup accept message from the core network based at least in part on sending the PDU setup request message.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the PDU setup request message includes a data network name, a PDU session type, a session and service continuity mode, or a combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An example of a system for wireless communication supporting a method of establishing a protocol data unit (PDU) session according to aspects of the present disclosure is shown.

[0023] Figure 2 An example of a wireless communication system supporting a method of establishing a PDU session according to aspects of the present disclosure is shown.

[0024] Figure 3 An example of a process flow of a method supporting establishment of a PDU session according to aspects of the present disclosure is shown.

[0025] Figure 4 An example of a process flow of a method supporting establishment of a PDU session according to aspects of the present disclosure is shown.

[0026] Figure 5 and Figure 6 A block diagram of a device supporting a method for establishing a PDU session according to aspects of the present disclosure is shown.

[0027] Figure 7 A block diagram of a communication manager supporting a method of establishing a PDU session according to aspects of the present disclosure is shown.

[0028] Figure 8 A diagram of a system including devices supporting a method of establishing a PDU session according to aspects of the present disclosure is shown.

[0029] Figures 9 to 13 A flow chart illustrating a method of supporting a method of establishing a PDU session according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0030] In some wireless communication systems, a user equipment (UE) may have two subscriptions, each subscription corresponding to a subscriber identity module (SIM) of the UE. A UE with two subscriptions may be referred to as a dual subscription dual standby (DSDS) UE. The UE may establish a connection (e.g., a protocol data unit (PDU) session) with a network via a first subscription or a second subscription. When an application of the UE requests to establish a connection with the network, the application may indicate an access preference rule to be used when establishing the connection. In order to establish a connection, the UE may compare the access preference rule of the application with the policy of the UE routing policy (URSP) of the default subscription (e.g., the first subscription). If the access preference rule does not match any of the policies of the URSP of the default subscription, the UE may select the default policy of the URSP of the first subscription and establish a connection with the network via the first subscription. In some cases, the default policy of the URSP may provide a relatively basic level of service (e.g., relatively low bandwidth, relatively high latency) compared to other policies of the URSP.

[0031] In some cases, the access preference rules of the application may match the policy of the URSP of the second subscription, and the second subscription may provide a better connection for the application (e.g., when compared to the first subscription). However, since the second subscription is not the current default subscription of the UE, the UE may not evaluate the URSP of the second subscription against the policy that matches the access preference rules of the application. Therefore, the UE may use the first connection to the network via the first subscription instead of the second connection to the network via the second subscription, and the second connection provides a higher quality of service for the application than the first connection via the first subscription.

[0032] In some other cases, if the UE determines that the access preference rules of the application lack a match between the policies of the URSP associated with the default subscription, the UE may evaluate the URSP of the second subscription for policies that match the access preference rules (e.g., instead of selecting the default policy of the URSP associated with the default subscription). If there is a match, the UE may update the default subscription to the second subscription and may optionally establish a connection with the network via the second subscription. In some cases, establishing a connection with the network via the second subscription may provide a higher quality of service for the application than establishing a connection with the network via the first subscription. In some instances, if there is a match, the UE may not automatically update the default subscription to the second subscription, and may instead prompt the user to determine whether to update the default subscription.

[0033] Aspects of the present disclosure are initially described in the context of a wireless communication system. Aspects of the present disclosure are described in the context of a process flow. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams associated with methods for establishing a PDU session.

[0034] Figure 1 An example of a wireless communication system 100 that supports a method of establishing a PDU session according to aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-APro network, or a new radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0035] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100, and may be devices of different forms or with different capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0036] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some examples of UE 115 are shown in FIG. UE 115 described herein may be able to communicate with various types of devices, such as other UE 115, base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 as shown in .

[0037] Base stations 105 may communicate with core network 130 or with each other, or both. For example, base stations 105 may interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other via backhaul links 120 (e.g., via X2, Xn, or other interfaces), or both, directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130). In some examples, backhaul links 120 may be or include one or more wireless links.

[0038] One or more of the base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga-NodeB (any of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0039] Among other examples, UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as electrical appliances, or vehicles, meters, etc.

[0040] The UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, such as Figure 1 as shown in .

[0041] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operations for the carrier, user data, or other signaling. The wireless communication system 100 may use carrier aggregation or multi-carrier operation to support communication with the UE 115. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0042] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid to be discovered by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be made via the carrier by a UE 115, or a carrier may operate in a non-standalone mode, where a connection is anchored using a different carrier (e.g., a carrier of the same or different radio access technology).

[0043] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0044] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may also increase the data rate or data integrity used for communicating with the UE 115.

[0045] The time interval of the base station 105 or the UE 115 may be expressed in multiples of a basic time unit, which may be, for example, T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N fThe maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., in the range of 0 to 1023).

[0046] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into (in the time domain) subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix preceding each symbol period). In some wireless communication systems 100, the time slot may also be divided into multiple small time slots containing one or more symbols. In addition to the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.

[0047] A subframe, a time slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0048] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a plurality of symbol periods and may extend over a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a UE set 115. For example, one or more of the UEs 115 may monitor or search for control information in a control region according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to a plurality of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. A search space set may include a common search space set configured for sending control information to a plurality of UEs 115 and a UE-specific search space set for sending control information to a particular UE 115.

[0049] Each base station 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots or other types of cells or any combination thereof). The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., via a carrier), and can be associated with an identifier used to distinguish adjacent cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), etc.). In some examples, a cell can also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (such as the capabilities of the base station 105), these cells can range from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell can be or include a building, a subset of a building, an external space between or overlapping a geographic coverage area 110, and other examples.

[0050] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 through a service subscription with a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 than a macro cell, and the small cell may operate in a frequency band that is the same or different (e.g., licensed, unlicensed) from the macro cell. A small cell may provide unrestricted access to a UE 115 through a service subscription with a network provider, or may provide unrestricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user at home or in an office). A base station 105 may support one or more cells, and may also use one or more component carriers to support communications on one or more cells.

[0051] In some examples, base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may, for example, include a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0052] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0053] In some examples, UE 115 may also be able to communicate directly with other UE 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in this group may be outside the geographic coverage area 110 of the base station 105 or may not otherwise be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0054] The core network 130 may provide user authentication, access permission, tracking, Internet Protocol (IP) connection, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity that routes packets or interconnections to an external network (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. Operator IP services 150 may include access to the Internet, Intranet(s), IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0055] Some of the network devices, such as base stations 105, may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with a UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmission points / reception points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs), or merged into a single network device (e.g., base station 105).

[0056] The wireless communication system 100 may operate using one or more frequency bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region of 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band, because wavelengths range from approximately one decimeter to one meter long. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently to allow macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using the lower frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.

[0057] The wireless communication system 100 can utilize licensed radio spectrum bands and unlicensed radio spectrum bands. For example, the wireless communication system 100 can use license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio spectrum band, devices such as base stations 105 and UEs 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be combined with component carriers operating in licensed bands (e.g., LAA) based on carrier aggregation configurations. Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0058] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographic locations. The base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. In addition or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0059] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape and steer an antenna beam (e.g., a transmit or receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0060] In some examples, the UE 115 in the wireless communication system 100 can operate in a dual subscription mode including a first subscription and a second subscription. In some cases, the application of the UE 115 can request to establish a data connection (e.g., a PDU session) according to the access preference rules of the application. The UE 115 can evaluate the policy of the URSP associated with the default subscription (e.g., the first subscription) to determine whether there is a policy matching the access preference rules of the application within the URSP associated with the default subscription. If the UE 115 determines that there is no matching policy within the URSP associated with the default subscription, the UE 115 can evaluate the URSP of the second subscription for the policy matching the access preference rules. If there is a match, the UE 115 can update the default subscription to the second subscription and can establish a connection with the network via the second subscription. For example, the UE 115 can prompt the user to determine whether to update the default subscription to the second subscription. If the user indicates to update the default subscription, the UE 115 can update the default subscription to the second subscription accordingly. The UE 115 can then establish a data connection via the second subscription according to the access preference rules of the application. In some other cases, the user can indicate that the first subscription is maintained as the default subscription. Here, the UE 115 may select a default policy for the URSP associated with the first subscription and establish a data connection via the first subscription according to the default policy.

[0061] Figure 2 An example of a wireless communication system 200 that supports a method of establishing a PDU session according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 can include a UE 115-a and a base station 105-a, which can be reference Figure 1 Corresponding examples of UE 115 and base station 105 are described.

[0062] UE 115-a may support multiple subscriptions and may be referred to as a multi-SIM UE 115-a or a DSDS UE 115-a. For example, UE 115-a may include a first subscription 205 and a second subscription 210. In addition, UE 115-a may include more than one SIM. For example, the first subscription 205 may be associated with a first SIM of UE 115-a, and the second subscription 210 may be associated with a second SIM of UE 115-a. UE 115-a may communicate with base station 105-a via the first subscription 205 and the second subscription 210. In some cases, the first subscription 205 and the second subscription 210 communicate with base station 105-a via different radio access technologies (RATs). For example, the first subscription 205 may be associated with a first RAT (e.g., NR, LTE, wireless local area network (WLAN), NB-IoT), and the second subscription 210 may operate using a different RAT.

[0063] UE 115-a may communicate with base station 105-a via first subscription link 215 or second subscription link 220. In some cases, first subscription link 215 may be associated with first subscription 205 and second subscription link 220 may be associated with second subscription 210. First subscription link 215 and second subscription link 220 may be as described above. Figure 1 An example of a communication link 125 is described.

[0064] UE 115-a may include one or more applications. In some cases, the application may request to establish a data connection with base station 105-a. For example, the application may send data to base station 105-a or receive data from base station 105-a via a data connection. When requesting to establish a data connection, the application may further indicate access preference rules to UE 115-a. For example, the application may indicate one or more service descriptors with associated priority values ​​(e.g., IP descriptor, non-IP descriptor, application identifier, domain descriptor, data network name (DNN), connection capability) or one or more routing descriptors with associated priority values ​​(e.g., session and service continuity mode, PDU session type, DNN, single network slice selection assistance information (S-NSSAI), access type preference, multiple access preference, non-seamless offload indication, time window, location criteria). That is, the access preference rules may indicate a preferred method for routing services associated with the application.

[0065] In order to establish a data connection for an application in response to a request, the UE 115-a may evaluate the URSP associated with the current default subscription (e.g., the first subscription 205 or the second subscription 210). That is, both the first subscription 205 and the second subscription 210 may be associated with a unique URSP. The URSP may include a URSP priority value that identifies the priority of the URSP among all existing URSPs, one or more service descriptors, and one or more routing descriptors. If the policy of the URSP matches the access preference rules of the application, the UE 115-a may prioritize routing and filtering of the service associated with the application to the base station 105-a, and provide a higher quality of service (e.g., higher throughput) than when the access preference rules lack a match between the policies of the URSP. For example, if the access preference rules lack a match with the URSP, the UE 115-a may establish a data connection using a default policy that provides a lower quality of service (e.g., lower throughput) than that provided by the matching policy. In some cases, UE 115-a can determine whether the access preference rules match the policy of the URSP by comparing the parameters of the access preference rules (e.g., traffic descriptors and routing descriptors and associated priority values) with the parameters of the URSP (e.g., priority values, traffic descriptors, and routing descriptors) and determining whether they match.

[0066] In some cases, UE 115-a may determine that the access preference rules indicated by the application requesting to establish a data connection with base station 105-a lack a match between the policies of the URSP of the default subscription. For example, if first subscription 205 is the current default subscription, UE 115-a may determine that the URSP associated with first subscription 205 does not include a policy that matches the access preference rules.

[0067] After determining that no policy in the policy of the URSP associated with the first subscription 205 (e.g., the current default subscription) matches the access preference rule, the UE 115-a may evaluate the policy of the URSP of the second subscription 210 for policies that match the access preference rule. In some cases, the UE 115-a may determine that the URSP of the second subscription 210 lacks a policy that matches the access preference rule. Here, the UE 115-a may select a default policy for the application from the URSP of the first subscription 205 and establish a data connection via the first subscription link 215 according to the default policy. In some other cases, the UE 115-a may determine that the URSP of the second subscription 210 includes a policy that matches the access preference rule.

[0068] After determining that the URSP of the second subscription 210 includes a policy that matches an access preference rule (e.g., an access preference rule of an application requesting to establish a data connection), the UE 115-a may prompt a user of the UE 115-a to select a default subscription for communication with the base station 105-a. That is, the UE 115-a may prompt the user to select the first subscription 205 or the second subscription 210 for establishing the data connection. The UE 115-a may then receive an indication of the selected default subscription from the user.

[0069] In one example, the UE 115-a may receive an indication of the second subscription 210 from the user. That is, the user may select the second subscription 210 as the default subscription. In this example, the UE 115-a may update the default subscription from the first subscription 205 to the second subscription 210. The UE 115-a may then establish a data connection via the second subscription link 220 according to a policy of the URSP matching the access preference rule. For example, the UE 115-a may send a PDU setup request message to the base station 105-a to establish a data connection via the second subscription link 220, and receive a PDU setup accept message from the base station 105-a in response to sending the PDU setup request message.

[0070] In another example, UE 115-a may receive an indication from a user indicating the first subscription 205. That is, the user may select the first subscription 205 as a default subscription. Here, UE 115-a may maintain the first subscription 205 as the default subscription. UE 115-a may then select a default policy from the policies within the URSP of the first subscription 205 for establishing a data connection for the application. UE 115-a may then establish a data connection via the first subscription 205 according to the default policy. For example, UE 115-a may send a PDU setup request message to base station 105-a to establish a data connection via the first subscription link 215, and receive a PDU setup accept message from base station 105-a in response to sending the PDU setup request message.

[0071] Figure 3 An example of a process flow 300 of a method for supporting establishment of a PDU session according to aspects of the present disclosure is shown. In some examples, the process flow 300 may be implemented as shown in FIG. Figure 1 and Figure 2 For example, UE 115-b may be as described with respect to Figure 1 and Figure 2 1. In addition, UE 115-b may include a first subscription 205-a and a second subscription 210-a, which may be referenced Figure 1 and Figure 21 and 10. In some cases, the UE 115-b may include a first SIM and a second SIM, wherein the first SIM is associated with the first subscription 205-a and the second SIM is associated with the second subscription 210-a. The UE 115-b may communicate with the AMF 310 (e.g., via a base station), which may be about Figure 1 An example of core network 130 is described.

[0072] At 330, the application 315 may request to establish a data connection with the network. That is, the application 315 may send an indication of the data connection request to the current default subscription (first subscription 205-a) of the UE 115-b. In addition, the application 315 may indicate the access preference rules to be used when establishing the data connection (e.g., within the data connection request).

[0073] At 332, the first subscription 205-a may determine that the first URSP lacks a policy that matches the access preference rule. For example, the first subscription 205-a may compare parameters of the access preference rule (e.g., traffic descriptors and routing descriptors and associated priority values) with parameters of the URSP policy (e.g., priority values, traffic descriptors, and routing descriptors) and determine that the parameters of the access preference rule do not match the parameters of the policy within the URSP.

[0074] At 334, the first subscription 205-a may communicate an instruction to the second subscription 210-a to evaluate the policy of the second URSP against a policy that matches the access preference rule indicated by the application 315. For example, the first subscription 205-a may send a check policy request message to the second subscription 210-a, thereby instructing the second subscription 210-a to evaluate the policy of the second URSP against a matching policy. In some cases, the first subscription 205-a may communicate the instruction to the second subscription 210-a by forwarding the check policy request message to the second SIM via the first SIM.

[0075] At 336, the second subscription 210-a may determine that the second URSP includes a policy that matches the access preference rule. For example, the second subscription 210-a compares parameters of the access preference rule with parameters of the URSP policy to determine that the second URSP includes a matching policy.

[0076] At 338, the second subscription 210-a may transmit an indication to the first subscription 205-a that the second URSP includes a matching policy. For example, the second subscription 210-a may send a check policy success message to the first subscription 205-a, indicating that the second URSP includes a matching policy. In some cases, the second subscription 210-a may transmit the indication to the first subscription 205-a by the second SIM sending a check policy success message to the first SIM.

[0077] At 340, the first subscription 205-a may indicate to the application 315 that the second subscription 210-a includes a matching policy. For example, the first subscription 205-a (or the first SIM) may forward a check policy success message to the application 315, indicating that the second subscription 210-a includes a matching policy.

[0078] At 342, the application 315 may prompt the user of the UE 115-b to select a default subscription (e.g., from the first subscription 205-a and the second subscription 210-a) for establishing the data connection. For example, the application 315 may ask the user whether to update the default description to the second subscription 210-a or to maintain the default description as the first subscription 205-a. Based on the user's selection, the process flow 300 may optionally follow a first procedure (referred to herein as Procedure 1) or a second procedure (referred to herein as Procedure 2). For example, if the user chooses to update the default subscription to the second subscription 210-a, the process flow 300 may follow Procedure 1. In addition, if the user chooses to maintain the default subscription as the first subscription 205-a, the process flow 300 may follow Procedure 2.

[0079] For procedure 1, at 344, the application 315 may send a request to the first subscription 205-a to update the default subscription from the first subscription 205-a to the second subscription 210-a. For example, the application 315 may send a default subscription update request message to the first subscription 205-a, indicating that the default subscription is updated from the first subscription 205-a to the second subscription 210-a. In some cases, the first SIM may receive the default subscription update request message from the application 315.

[0080] At 346, UE 115-b may update the default subscription from first subscription 205-a to second subscription 210-a. At 348, first subscription 205-a may indicate to application 315 that the default subscription has been updated and that application 315 may now establish a data connection via second subscription 210-a. For example, first subscription 205-a may send a default subscription update confirmation message to application 315, indicating that the default subscription has been updated.

[0081] At 350, the application 315 may request to establish a data connection with the AMF 310 via the updated default subscription second subscription 210-a (e.g., in response to receiving a default subscription update configuration message). For example, based on UE 115-b updating the default subscription to the second subscription 210-a, the application 315 may request the second subscription 210-a to establish a data connection with the AMF 310.

[0082] The UE 115-b may establish the data connection via the second subscription 210-a based on receiving a request to establish the data connection from the application 315. That is, at 352, the UE 115-b may send a PDU setup request message to the AMF 310 via the second subscription 210-a (e.g., through the second SIM). The PDU setup request message may indicate to the AMF 310 a matching strategy for establishing the data connection. In some cases, the PDU setup request message includes a DNN, a PDU session type, a session and service continuity mode, or any combination thereof.

[0083] At 354, the AMF 310 may send a PDU setup accept message to the UE 115-b via the second subscription 210-a in response to the PDU setup request. Thus, the UE 115-b may establish a data connection for the application 315 via the second subscription 210-a using the matching policy.

[0084] For procedure 2, at 356, the application 315 can indicate to the first subscription 205-a that the user has selected to maintain the default subscription as the first subscription 205-a. For example, the application 315 can send a default subscription selection message to the first subscription 205-a, indicating that the user has selected to maintain the default subscription as the first subscription 205-a. In some cases, the first SIM can receive the default subscription selection message from the application 315.

[0085] At 358, the first subscription 205-a may select a default policy for the application 315. In some cases, the default policy includes a "match all" descriptor for use when establishing a data connection via the first subscription 205-a.

[0086] The UE 115-b may establish the data connection via the first subscription 205-a based on receiving the default subscription selection message from the application 315. For example, at 360, the UE 115-b may send a PDU setup request message to the AMF 310 via the first subscription 205-a. The PDU setup request message may indicate the selected default policy for establishing the data connection to the AMF 310. In some cases, the PDU setup request message includes a DNN, a PDU session type, a session and service continuity mode, or any combination thereof.

[0087] At 362, the AMF 310 may send a PDU setup accept message to the UE 115-b via the first subscription 205-a in response to the PDU setup request. In this way, the UE 115-b may establish a data connection for the application 315 via the first subscription 205-a using a default policy. In some cases, the first SIM may receive the PDU setup accept message from the AMF 310 via the first subscription 205-a.

[0088] Figure 4 An example of a process flow 400 of a method for supporting establishment of a PDU session according to aspects of the present disclosure is shown. In some examples, the process flow 400 can implement aspects of the wireless communication system 100. Aspects of the process flow 400 can be implemented by a UE 115-c, which can be related to Figures 1 to 3 1. In addition, UE 115-c may include a first subscription 205-b and a second subscription 210-b, which may be related to Figures 1 to 3 1 and 2. The UE 115-c may communicate with the AMF 310-a (eg, via a base station) which may be about the AMF 310-a. Figure 1 The core network 130 described or related Figure 3 An example of an AMF 310 is described.

[0089] At 430, the application 315-a may request to establish a data connection with the network. That is, the application 315-a may send an indication of the data connection request to the current default subscription (first subscription 205-b) of the UE 115-c. In addition, the application 315-a may indicate the access preference rules to be used when establishing the data connection.

[0090] At 435, the first subscription 205-b may determine that the URSP of the first subscription 205-b lacks a policy that matches the access preference rule. For example, the first subscription 205-b may compare parameters of the access preference rule (e.g., traffic descriptors and routing descriptors and associated priority values) with parameters of the URSP policy (e.g., priority values, traffic descriptors, and routing descriptors) and determine that the parameters of the access preference rule and the URSP policy do not match.

[0091] At 440, the first subscription 205-b may instruct the second subscription 210-b to evaluate the policy of the URSP of the second subscription 210-b against the policy of the access preference rule indicated by the application 315-b. For example, the first subscription 205-b may send a check policy request message to the second subscription 210-b, thereby instructing the second subscription 210-b to evaluate the policy of the URSP against a matching policy.

[0092] At 445, the second subscription 210-b may determine that the second URSP lacks a policy that matches the access preference rule. For example, the second subscription 210-b may compare parameters of the access preference rule with parameters of the URSP policy and determine that the parameters of the access preference rule and the URSP policy do not match.

[0093] The second subscription 210-b may indicate to the first subscription 205-b that the second URSP lacks a matching policy at 450. For example, the second subscription 210-b may send a check policy failure message to the first subscription 205-b indicating that the second subscription 210-b lacks a matching policy.

[0094] At 455, the first subscription 205-b may select a default policy for the application 315-b. In some cases, the default policy includes a "match all" descriptor that is used when establishing a data connection via the first subscription 205-b.

[0095] At 460, the UE 115-c may send a PDU setup request message to the AMF 310-a via the first subscription 205-b. The PDU setup request message may indicate to the AMF 310-a the selected default policy to be used when establishing the data connection. In some cases, the PDU setup request message includes a DNN, a PDU session type, a session and service continuity mode, or any combination thereof.

[0096] At 465, the AMF 310-a may send a PDU setup accept message to the UE 115-c via the first subscription 205-b in response to the PDU setup request. In this way, the UE 115-c may establish a data connection for the application 315-a via the first subscription 205-b using a default policy.

[0097] Figure 5 A block diagram 500 of a device 505 supporting a method of establishing a PDU session according to aspects of the present disclosure is shown. The device 505 may be an example of aspects of a UE 115 as described herein. The device 505 may include a receiver 510, a communication manager 515, and a transmitter 520. The device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0098] The receiver 510 may receive information associated with various information channels (e.g., control channels, data channels, and information related to methods for establishing PDU sessions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 505. The receiver 510 may be an example of aspects of a transceiver. The receiver 510 may utilize a single antenna or an antenna set.

[0099] The communication manager 515 can identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application; determine that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; based on the lack of a match between policies of the first routing selection policy, evaluate a second routing selection policy associated with the second subscription for matching policies of the matching access preference rule; and establish the data connection after evaluating the second routing selection policy. The communication manager 515 can be an example of aspects of the communication manager 810 described herein.

[0100] The communication manager 515 or its subcomponents may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 515 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designated to perform the functions described in the present disclosure.

[0101] The communication manager 515 or its subcomponents can be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 515 or its subcomponents can be separate and distinct components according to various aspects of the present disclosure. In some examples, the communication manager 515 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof according to various aspects of the present disclosure.

[0102] Transmitter 520 can transmit signals generated by other components of device 505. In some examples, transmitter 520 can be co-located with receiver 510 in a transceiver module. For example, transmitter 520 can be an example of an aspect of a transceiver. Transmitter 520 can utilize a single antenna or a set of antennas.

[0103] Figure 6 A block diagram 600 of a device 605 supporting a method of establishing a PDU session according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or UE 115 as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 640. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0104] The receiver 610 may receive information associated with various information channels (e.g., control channels, data channels, and information related to methods for establishing PDU sessions, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 605. The receiver 610 may be an example of aspects of a transceiver. The receiver 610 may utilize a single antenna or an antenna set.

[0105] The communication manager 615 may be an example of aspects of the communication manager 515 as described herein. The communication manager 615 may include a dual subscription application manager 620, a first subscription manager 625, a second subscription manager 630, and a data connection component 635. The communication manager 615 may be an example of aspects of the communication manager 810 as described herein.

[0106] The dual subscription application manager 620 may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting establishment of a data connection according to access preference rules of the application.

[0107] The first subscription manager 625 may determine that the access preference rules lack a match between the policies of the first routing policy associated with the first subscription.

[0108] The second subscription manager 630 may evaluate the second routing policy associated with the second subscription against matching policies of matching access preference rules based on the lack of a match between policies of the first routing policy.

[0109] The data connection component 635 can establish the data connection after evaluating the second routing strategy.

[0110] Transmitter 640 can transmit signals generated by other components of device 605. In some examples, transmitter 640 can be co-located with receiver 610 in a transceiver module. For example, transmitter 640 can be an example of an aspect of a transceiver. Transmitter 640 can utilize a single antenna or a set of antennas.

[0111] Figure 7 A block diagram 700 of a communication manager 705 supporting a method of establishing a PDU session according to aspects of the present disclosure is shown. The communication manager 705 may be an example of aspects of the communication manager 515, the communication manager 615, or the communication manager 810 described herein. The communication manager 705 may include a dual subscription application manager 710, a first subscription manager 715, a second subscription manager 720, a data connection component 725, a default subscription manager 730, a subscription selection component 735, and a routing strategy component 740. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0112] The dual subscription application manager 710 may identify that the UE operates in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting establishment of a data connection according to an access preference rule of the application. In some cases, the first subscription is configured to provide a first data connection associated with a first quality of service of the application, and the second subscription is configured to provide a second data connection associated with a second quality of service of the application, the second quality of service being higher than the first quality of service.

[0113] The first subscription manager 715 may determine that the access preference rule lacks a match between the policies of the first routing selection policy associated with the first subscription. In some examples, the first subscription manager 715 may identify that the first subscription is a default subscription for the UE. In some instances, the first subscription manager 715 may evaluate the first routing selection policy for a matching policy based on the first subscription being the default subscription.

[0114] The second subscription manager 720 may evaluate the second routing selection policy associated with the second subscription for a matching policy that matches the access preference rule based on a lack of match between the policies of the first routing selection policy. In some examples, the second subscription manager 720 may determine based on the evaluation that the second routing selection policy includes a matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based on the second routing selection policy including the matching policy. In some cases, the second subscription manager 720 may determine based on the evaluation that the second routing selection policy includes a matching policy that matches the access preference rule. In other cases, the second subscription manager 720 may determine based on the evaluation that the second routing selection policy lacks a matching policy that matches the access preference rule.

[0115] The data connection component 725 can establish a data connection after evaluating the second routing selection strategy. In some examples, the data connection component 725 can establish a data connection via the second subscription based on updating the default subscription of the UE from the first subscription to the second subscription, and the update includes a matching strategy based on the second routing selection strategy. In some instances, the data connection component 725 can establish a data connection via the first subscription based on determining that the first subscription is maintained as the default subscription of the UE. In some cases, the data connection component 725 can establish a data connection via the first subscription based on the lack of a matching strategy in the second routing selection strategy. In some examples, the data connection component 725 can send a PDU establishment request message to the core network to establish a data connection. In some cases, the PDU establishment request message includes a data network name, a PDU session type, a session and service continuity mode, or a combination thereof. In some instances, the data connection component 725 can receive a PDU establishment acceptance message from the core network based on sending a PDU establishment request message.

[0116] The default subscription manager 730 may update the default subscription of the UE from the first subscription to the second subscription based on the second routing selection policy including the matching policy. In some examples, the default subscription manager 730 may receive an indication of the second subscription from the user, wherein updating the default subscription of the UE to the second subscription is based on receiving the indication of the second subscription from the user. In some cases, the default subscription manager 730 may maintain the first subscription as the default subscription of the UE after determining that the second routing selection policy includes the matching policy. In some instances, the default subscription manager 730 may receive an indication of the first subscription from the user, wherein maintaining the first subscription as the default subscription of the UE is based on receiving the indication of the first subscription from the user.

[0117] The subscription selection component 735 may prompt the user of the UE to select a default subscription for the UE from the first subscription and the second subscription based on determining that the second routing selection strategy includes a matching strategy. In some examples, the subscription selection component 735 may prompt the user of the UE to select a default subscription for the UE from the first subscription and the second subscription based on determining that the second routing selection strategy includes a matching strategy.

[0118] The routing policy component 740 can select a default policy to apply from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based on the default policy.

[0119] Figure 8 A diagram of a system 800 including a device 805 supporting a method of establishing a PDU session according to aspects of the present disclosure is shown. The device 805 may be an example of or include components of a device 505, a device 605, or a UE 115 as described herein. The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, and a processor 840. These components may be in electronic communication via one or more buses (e.g., bus 845).

[0120] The communication manager 810 can identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection based on an access preference rule of the application; determine that the access preference rule lacks a match between the policies of a first routing selection policy associated with the first subscription; based on the lack of a match between the policies of the first routing selection policy, evaluate the second routing selection policy associated with the second subscription for a matching policy that matches the access preference rule; and establish a data connection after evaluating the second routing selection policy.

[0121] I / O controller 815 can manage input and output signals for device 805. I / O controller 815 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 815 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 815 can utilize a computer such as a 805. In some cases, the I / O controller 815 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 815 may be implemented as part of a processor. In some cases, a user may interact with the device 805 via the I / O controller 815 or via hardware components controlled by the I / O controller 815.

[0122] The transceiver 820 can communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 820 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 820 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0123] In some cases, a wireless device may include a single antenna 825. However, in some cases, a device may have more than one antenna 825, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0124] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 830 may contain, among other things, a basic input / output system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0125] The processor 840 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks to support SIM registration in a dual SIM device).

[0126] The code 835 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 835 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 835 may not be directly executable by the processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0127] Fig. 9 1 shows a flow chart of a method 900 for supporting establishment of a PDU session according to aspects of the present disclosure. The operations of the method 900 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 900 may be implemented by reference to Figures 5 to 8 The described communication manager performs the operations of method 900. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. In addition or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0128] At 905, the UE may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application. The operation of 905 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the dual subscription application manager execution 905 are described.

[0129] At 910, the UE may determine that the access preference rule lacks a match between the policies of the first routing policy associated with the first subscription. The operations of 910 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of a first subscription manager execution 910 are described.

[0130] At 915, the UE may evaluate the second routing policy associated with the second subscription against the matching policy of the matching access preference rule based on the lack of a match between the policies of the first routing policy. The operations of 915 may be performed according to the methods described herein. In some examples, the Figures 5 to 8 Aspects of the operations of the second subscription manager execution 915 are described.

[0131] At 920, the UE may establish a data connection after evaluating the second routing strategy. The operations of 920 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the data connection component execution 920 are described.

[0132] Fig.101 is a flow chart of a method 1000 for supporting establishment of a PDU session according to aspects of the present disclosure. The operations of the method 1000 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1000 may be implemented by a UE 115 or a component thereof as described herein. Figures 5 to 8 The described communication manager performs the operations of method 1000. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0133] At 1005, the UE may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application. The operation of 1005 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the dual subscription application manager execution 1005 are described.

[0134] At 1010, the UE may determine that the access preference rules lack a match between the policies of the first routing policy associated with the first subscription. The operations of 1010 may be performed according to the methods described herein. In some examples, the Figures 5 to 8 Aspects of the operations of the first subscription manager execution 1010 are described.

[0135] At 1015, the UE may evaluate the second routing policy associated with the second subscription against the matching policy of the matching access preference rule based on the lack of a match between the policies of the first routing policy. The operation of 1015 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1015 are described.

[0136] At 1020, the UE may determine, based on the evaluation, that the second routing strategy includes a matching strategy that matches the access preference rule. The operations of 1020 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1020 are described.

[0137] At 1025, the UE may establish a data connection after evaluating the second routing strategy, wherein the data connection is established via the second subscription based on the second routing strategy including the matching strategy. The operation of 1025 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations performed by the data connection component 1025 are described.

[0138] Fig.111 shows a flow chart of a method 1100 for supporting establishment of a PDU session according to aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1100 may be implemented by a UE 115 or a component thereof as described herein. Figures 5 to 8 The described communication manager performs the operations of method 1100. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. In addition or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0139] At 1105, the UE may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application. The operation of 1105 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the dual subscription application manager execution 1105 are described.

[0140] At 1110, the UE may determine that the access preference rule lacks a match between the policies of the first routing policy associated with the first subscription. The operations of 1110 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the first subscription manager execution 1110 are described.

[0141] At 1115, the UE may evaluate the second routing policy associated with the second subscription against the matching policy of the matching access preference rule based on the lack of a match between the policies of the first routing policy. The operation of 1115 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1115 are described.

[0142] At 1120, the UE may determine, based on the evaluation, that the second routing strategy includes a matching strategy that matches the access preference rule. The operations of 1120 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1120 are described.

[0143] At 1125, the UE may update the default subscription of the UE from the first subscription to the second subscription based on the second routing selection strategy including the matching strategy. The operation of 1125 may be performed according to the method described herein. In some examples, the reference Figures 5 to 8 Aspects of the operation of the default subscription manager execution 1125 are described.

[0144] At 1130, the UE may establish a data connection after evaluating the second routing strategy, wherein the data connection is established via the second subscription based on the second routing strategy including the matching strategy. The operations of 1130 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the data connection component 1130 are described.

[0145] Fig.12 1 is a flow chart of a method 1200 for supporting establishment of a PDU session according to aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1200 may be implemented by reference to Figures 5 to 8 The described communication manager performs the operations of method 1200. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. In addition or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0146] At 1205, the UE may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application. The operation of 1205 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the dual subscription application manager execution 1205 are described.

[0147] At 1210, the UE may determine that the access preference rule lacks a match between the policies of the first routing policy associated with the first subscription. The operations of 1210 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the first subscription manager execution 1210 are described.

[0148] At 1215, the UE may evaluate the second routing policy associated with the second subscription against the matching policy of the matching access preference rule based on the lack of a match between the policies of the first routing policy. The operations of 1215 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1215 are described.

[0149] At 1220, the UE may determine, based on the evaluation, that the second routing strategy includes a matching strategy that matches the access preference rule. The operations of 1220 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1220 are described.

[0150] At 1225, the UE may maintain the first subscription as a default subscription of the UE after determining that the second routing policy includes a matching policy. The operations of 1225 may be performed according to the methods described herein. In some examples, the first subscription may be maintained as a default subscription of the UE after determining that the second routing policy includes a matching policy. Figures 5 to 8 Aspects of the operation of the default subscription manager execution 1225 are described.

[0151] At 1230, the UE may establish a data connection via the first subscription after evaluating the second routing strategy and based on determining to maintain the first subscription as the default subscription of the UE. The operations of 1230 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations performed by the data connection component 1230 are described.

[0152] Fig.13 1300 is a flowchart of a method 1300 for supporting establishment of a PDU session according to aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1300 may be implemented by a UE 115 or a component thereof as described herein. Figures 5 to 8 The described communication manager performs the operations of method 1300. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. In addition or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0153] At 1305, the UE may identify that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection according to an access preference rule of the application. The operation of 1305 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the dual subscription application manager execution 1305 are described.

[0154] At 1310, the UE may determine that the access preference rules lack a match between the policies of the first routing policy associated with the first subscription. The operations of 1310 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the first subscription manager execution 1310 are described.

[0155] At 1315, the UE may evaluate the second routing policy associated with the second subscription against the matching policy of the matching access preference rule based on the lack of a match between the policies of the first routing policy. The operations of 1315 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1315 are described.

[0156] At 1320, the UE may determine, based on the evaluation, that the second routing strategy lacks a matching strategy that matches the access preference rule. The operations of 1320 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 Aspects of the operations of the second subscription manager execution 1320 are described.

[0157] At 1325, the UE may establish a data connection via the first subscription after evaluating the second routing selection policy and based on the lack of a matching policy for the second routing selection policy. The operations of 1325 may be performed according to the methods described herein. In some examples, the UE may be referred to as Figures 5 to 8 Aspects of the operations performed by the data connection component 1325 are described.

[0158] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more of the methods may be combined.

[0159] Example 1: A method for wireless communication at a UE, comprising: identifying that the UE is operating in a dual subscription mode including a first subscription and a second subscription and that the UE includes an application requesting to establish a data connection based on an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing selection policy associated with the first subscription; evaluating a second routing selection policy associated with the second subscription for a matching policy that matches the access preference rule based at least in part on the lack of a match between policies of the first routing selection policy; and establishing a data connection after evaluating the second routing selection policy.

[0160] Example 2: The method according to Example 1 further includes: determining, at least in part based on the evaluation, that the second routing selection policy includes a matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based at least in part on the second routing selection policy including the matching policy.

[0161] Example 3: According to the method of any one of Example 1 or Example 2, it also includes: updating the default subscription of the UE from the first subscription to the second subscription based at least in part on the second routing selection strategy including a matching strategy.

[0162] Example 4: The method according to any one of Examples 1 to 3 further includes: prompting a user of the UE to select a default subscription of the UE from the first subscription and the second subscription based at least in part on determining that the second routing selection strategy includes a matching strategy; and receiving an indication of the second subscription from the user, wherein the default subscription of the UE is updated to the second subscription based at least in part on receiving the indication of the second subscription from the user.

[0163] Example 5: According to any one of Examples 1 to 4, the method further includes: establishing a data connection via a second subscription based at least in part on updating the UE's default subscription from the first subscription to the second subscription, the update being based at least in part on the second routing selection strategy including a matching strategy.

[0164] Example 6: The method according to any one of Examples 1 to 5 further includes: determining, at least in part based on an evaluation, that the second routing selection policy includes a matching policy that matches an access preference rule; maintaining the first subscription as the default subscription of the UE after determining that the second routing selection policy includes the matching policy; and establishing a data connection via the first subscription based at least in part on determining to maintain the first subscription as the default subscription of the UE.

[0165] Example 7: The method according to any one of Examples 1 to 6 further includes: prompting a user of the UE to select a default subscription for the UE from the first subscription and the second subscription based at least in part on determining that the second routing selection strategy includes a matching strategy; and receiving an indication of the first subscription from the user, wherein maintaining the first subscription as the default subscription for the UE is based at least in part on receiving an indication of the first subscription from the user.

[0166] Example 8: The method of any one of Examples 1 to 7, further comprising: selecting a default policy for application from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

[0167] Example 9: The method according to any one of Examples 1 to 8 further includes: determining at least in part based on an evaluation that the second routing selection policy lacks a matching policy that matches the access preference rule; and establishing a data connection via the first subscription at least in part based on the second routing selection policy lacking a matching policy.

[0168] Example 10: The method of any one of Examples 1 to 9, further comprising: selecting a default policy for application from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

[0169] Example 11: According to any one of Examples 1 to 10, the method further includes: identifying that the first subscription is a default subscription of the UE; and evaluating the first routing selection policy against the matching policy based at least in part on the first subscription being the default subscription.

[0170] Example 12: A method according to any one of Examples 1 to 11, wherein the first subscription is configured to provide a first data connection associated with a first quality of service of the application, and the second subscription is configured to provide a second data connection associated with a second quality of service of the application, the second quality of service being higher than the first quality of service.

[0171] Example 13: The method according to any one of Examples 1 to 12 further includes: sending a PDU establishment request message to a core network to establish a data connection; and receiving a PDU establishment acceptance message from the core network based at least in part on sending the PDU establishment request message.

[0172] Example 14: A method according to any one of Examples 1 to 13, wherein the PDU establishment request message includes a data network name, a PDU session type, a session and service continuity mode, or a combination thereof.

[0173] Example 15: An apparatus comprising at least one component for performing the method according to any one of Examples 1 to 14.

[0174] Example 16: A device for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform a method according to any one of Examples 1 to 14.

[0175] Example 17: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of Examples 1 to 14.

[0176] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in many descriptions, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0177] The information and signals described herein may be represented using any of a variety of different processes and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0178] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0179] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented with a processor, hardware, firmware, hardwiring, or a combination of any of these. Features that implement the functions may also be physically located in different locations, including distributed, such that portions of the functions are implemented at different physical locations.

[0180] Computer readable medium includes non-transitory computer storage medium and communication medium, and the communication medium includes any medium that is convenient to transmit computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.As an example and not limitation, non-transitory computer readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, CD (CD) ROM or other optical disk storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing required program code parts and any other non-transitory medium that can be accessed by general-purpose computer or special-purpose computer or general processor or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer readable medium.For example, if coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave are used to transmit software from website, server or other remote source, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer readable medium. Disk and disc as used herein include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0181] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0182] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes the similar components. If only the first reference number is used in the specification, the description applies to any of the similar components having the same first reference number, regardless of the second reference number or other subsequent reference numbers.

[0183] The description set forth herein in conjunction with the accompanying drawings describes example configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "better than other examples." In order to provide an understanding of the described techniques, this detailed description includes specific details. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0184] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. One of ordinary skill in the art will readily appreciate various modifications, and the general principles defined herein may be applied to other variations without departing from the scope of the present invention. Therefore, the present disclosure is not limited to the examples and designs described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: identifying that the UE operates in a dual subscription mode including a first subscription and a second subscription and that the UE includes the application requesting establishment of a data connection according to an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing policy associated with the first subscription; evaluating a second routing policy associated with the second subscription against matching policies that match the access preference rule based at least in part on the lack of the match between policies of the first routing policy; and The data connection is established after evaluating the second routing strategy.

2. The method according to claim 1, further comprising: Based at least in part on the evaluating, it is determined that the second routing policy includes the matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based at least in part on the second routing policy including the matching policy.

3. The method according to claim 2, further comprising: Based at least in part on the second routing policy including the matching policy, updating a default subscription of the UE from the first subscription to the second subscription.

4. The method according to claim 2, further comprising: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select a default subscription for the UE from the first subscription and the second subscription; as well as An indication of the second subscription is received from the user, wherein the default subscription of the UE is updated to the second subscription based at least in part on receiving the indication of the second subscription from the user.

5. The method according to claim 2, further comprising: The data connection is established via the second subscription based at least in part on updating a default subscription of the UE from the first subscription to the second subscription, the updating being based at least in part on the second routing policy including the matching policy.

6. The method according to claim 1, further comprising: determining, based at least in part on the evaluating, that the second routing strategy includes the matching strategy that matches the access preference rule; After determining that the second routing policy includes the matching policy, maintaining the first subscription as a default subscription for the UE; as well as The data connection is established via the first subscription based at least in part on determining to maintain the first subscription as the default subscription for the UE.

7. The method according to claim 6, further comprising: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select the default subscription for the UE from the first subscription and the second subscription; as well as An indication of the first subscription is received from the user, wherein maintaining the first subscription as the default subscription for the UE is based at least in part on receiving the indication of the first subscription from the user.

8. The method according to claim 6, further comprising: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

9. The method according to claim 1, further comprising: determining, based at least in part on the evaluating, that the second routing strategy lacks the matching strategy that matches the access preference rule; The data connection is established via the first subscription based at least in part on the lack of the matching policy by the second routing policy.

10. The method according to claim 9, further comprising: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

11. The method according to claim 1, further comprising: Identifying that the first subscription is a default subscription of the UE; as well as The first routing policy is evaluated against the matching policy based at least in part on the first subscription being the default subscription.

12. The method according to claim 1, wherein: The first subscription is configured to provide a first data connection associated with a first quality of service for the application, and the second subscription is configured to provide a second data connection associated with a second quality of service for the application, the second quality of service being higher than the first quality of service.

13. The method according to claim 1, wherein: Establishing the data connection further includes: Sending a protocol data unit establishment request message to a core network to establish the data connection; and Based at least in part on sending the protocol data unit setup request message, a protocol data unit setup accept message is received from the core network.

14. The method according to claim 13, wherein: The protocol data unit setup request message includes a data network name, a protocol data unit session type, a session and service continuity mode, or a combination thereof.

15. An apparatus for wireless communication at a user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: identifying that the UE operates in a dual subscription mode including a first subscription and a second subscription and that the UE includes the application requesting establishment of a data connection according to an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing policy associated with the first subscription; evaluating a second routing policy associated with the second subscription against matching policies that match the access preference rule based at least in part on the lack of the match between policies of the first routing policy; and The data connection is established after evaluating the second routing strategy.

16. The device according to claim 15, wherein: The instructions are also executable by the processor to cause the device to: Based at least in part on the evaluating, it is determined that the second routing policy includes the matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based at least in part on the second routing policy including the matching policy.

17. The device according to claim 16, wherein: The instructions are also executable by the processor to cause the device to: Based at least in part on the second routing policy including the matching policy, updating a default subscription of the UE from the first subscription to the second subscription.

18. The device according to claim 16, wherein: The instructions are also executable by the processor to cause the device to: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select a default subscription for the UE from the first subscription and the second subscription; as well as The default subscription of the UE is updated to the second subscription based at least in part on receiving an indication of the second subscription from the user.

19. The device according to claim 16, wherein: The instructions are also executable by the processor to cause the device to: The data connection is established via the second subscription based at least in part on updating a default subscription of the UE from the first subscription to the second subscription, the updating being based at least in part on the second routing policy including the matching policy.

20. The device according to claim 15, wherein: The instructions are also executable by the processor to cause the device to: determining, based at least in part on the evaluating, that the second routing strategy includes the matching strategy that matches the access preference rule; After determining that the second routing policy includes the matching policy, maintaining the first subscription as a default subscription for the UE; as well as The data connection is established via the first subscription based at least in part on determining to maintain the first subscription as the default subscription for the UE.

21. The device according to claim 20, wherein: The instructions are also executable by the processor to cause the device to: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select the default subscription for the UE from the first subscription and the second subscription; as well as An indication of the first subscription is received from the user, wherein maintaining the first subscription as the default subscription for the UE is based at least in part on receiving the indication of the first subscription from the user.

22. The device according to claim 20, wherein: The instructions are also executable by the processor to cause the device to: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

23. The device according to claim 15, wherein: The instructions are also executable by the processor to cause the device to: determining, based at least in part on the evaluating, that the second routing strategy lacks the matching strategy that matches the access preference rule; The data connection is established via the first subscription based at least in part on the lack of the matching policy by the second routing policy.

24. The device according to claim 23, wherein: The instructions are also executable by the processor to cause the device to: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

25. The device according to claim 15, wherein: The instructions are also executable by the processor to cause the device to: Identifying that the first subscription is a default subscription of the UE; as well as The first routing policy is evaluated against the matching policy based at least in part on the first subscription being the default subscription.

26. The device according to claim 15, wherein: The first subscription is configured to provide a first data connection associated with a first quality of service for the application, and the second subscription is configured to provide a second data connection associated with a second quality of service for the application, the second quality of service being higher than the first quality of service.

27. The device according to claim 15, wherein: The instructions to establish the data connection are also executable by the processor to cause the device to: Sending a protocol data unit establishment request message to a core network to establish the data connection; and Based at least in part on sending the protocol data unit setup request message, a protocol data unit setup accept message is received from the core network.

28. The device according to claim 27, wherein The protocol data unit setup request message includes a data network name, a protocol data unit session type, a session and service continuity mode, or a combination thereof.

29. An apparatus for wireless communication at a user equipment (UE), comprising: means for identifying that the UE operates in a dual subscription mode comprising a first subscription and a second subscription and that the UE comprises the application requesting establishment of a data connection according to an access preference rule of the application; means for determining that the access preference rule lacks a match between policies of a first routing policy associated with the first subscription; means for evaluating a second routing policy associated with the second subscription against matching policies matching the access preference rule based at least in part on the lack of the match between policies of the first routing policy; as well as Means for establishing the data connection after evaluating the second routing strategy.

30. The apparatus of claim 29, further comprising: means for determining, based at least in part on the evaluating, that the second routing policy includes the matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based at least in part on the second routing policy including the matching policy.

31. The apparatus of claim 30, further comprising: Means for updating a default subscription of the UE from the first subscription to the second subscription based at least in part on the second routing policy including the matching policy.

32. The apparatus of claim 30, further comprising: means for prompting a user of the UE to select a default subscription for the UE from among the first subscription and the second subscription based at least in part on determining that the second routing policy includes the matching policy; as well as Means for receiving an indication of the second subscription from the user, wherein the default subscription of the UE is updated to the second subscription based at least in part on receiving the indication of the second subscription from the user.

33. The apparatus of claim 30, further comprising: Means for establishing the data connection via the second subscription based at least in part on updating a default subscription of the UE from the first subscription to the second subscription, the updating based at least in part on the second routing policy including the matching policy.

34. The apparatus of claim 29, further comprising: means for determining, based at least in part on said evaluating, that said second routing strategy comprises said matching strategy that matches said access preference rule; means for maintaining the first subscription as a default subscription for the UE upon determining that the second routing policy includes the matching policy; as well as Means for establishing the data connection via the first subscription based at least in part on determining to maintain the first subscription as the default subscription for the UE.

35. The apparatus of claim 34, further comprising: means for prompting a user of the UE to select the default subscription for the UE from among the first subscription and the second subscription based at least in part on determining that the second routing policy includes the matching policy; as well as Means for receiving an indication of the first subscription from the user, wherein maintaining the first subscription as the default subscription for the UE is based at least in part on receiving the indication of the first subscription from the user.

36. The apparatus of claim 34, further comprising: Means for selecting a default policy for the application from among the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

37. The apparatus of claim 29, further comprising: means for determining, based at least in part on said evaluating, that said second routing strategy lacks said matching strategy that matches said access preference rule; Means for establishing the data connection via the first subscription based at least in part on the lack of the matching policy of the second routing policy.

38. The apparatus of claim 37, further comprising: Means for selecting a default policy for the application from among the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

39. The apparatus of claim 29, further comprising: means for identifying that the first subscription is a default subscription of the UE; as well as Means for evaluating the first routing policy against the matching policy based at least in part on the first subscription being the default subscription.

40. The device according to claim 29, wherein The first subscription is configured to provide a first data connection associated with a first quality of service for the application, and the second subscription is configured to provide a second data connection associated with a second quality of service for the application, the second quality of service being higher than the first quality of service.

41. The apparatus of claim 29, wherein: The means for establishing the data connection further comprises: means for sending a protocol data unit setup request message to a core network to establish said data connection; and Means for receiving a protocol data unit setup accept message from the core network based at least in part on sending the protocol data unit setup request message.

42. The device according to claim 41, wherein The protocol data unit setup request message includes a data network name, a protocol data unit session type, a session and service continuity mode, or a combination thereof.

43. A non-transitory computer readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to: identifying that the UE operates in a dual subscription mode including a first subscription and a second subscription and that the UE includes the application requesting establishment of a data connection according to an access preference rule of the application; determining that the access preference rule lacks a match between policies of a first routing policy associated with the first subscription; evaluating a second routing policy associated with the second subscription against matching policies that match the access preference rule based at least in part on the lack of the match between policies of the first routing policy; and The data connection is established after evaluating the second routing strategy.

44. The non-transitory computer readable medium of claim 43, wherein: The instructions are further executable to: Based at least in part on the evaluating, it is determined that the second routing policy includes the matching policy that matches the access preference rule, wherein the data connection is established via the second subscription based at least in part on the second routing policy including the matching policy.

45. The non-transitory computer readable medium of claim 44, wherein: The instructions are further executable to: Based at least in part on the second routing policy including the matching policy, updating a default subscription of the UE from the first subscription to the second subscription.

46. ​​The non-transitory computer readable medium of claim 44, wherein: The instructions are further executable to: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select a default subscription for the UE from the first subscription and the second subscription; as well as An indication of the second subscription is received from the user, wherein the default subscription of the UE is updated to the second subscription based at least in part on receiving the indication of the second subscription from the user.

47. The non-transitory computer readable medium of claim 44, wherein: The instructions are further executable to: The data connection is established via the second subscription based at least in part on updating a default subscription of the UE from the first subscription to the second subscription, the updating being based at least in part on the second routing policy including the matching policy.

48. The non-transitory computer readable medium of claim 43, wherein: The instructions are further executable to: determining, based at least in part on the evaluating, that the second routing strategy includes the matching strategy that matches the access preference rule; After determining that the second routing policy includes the matching policy, maintaining the first subscription as a default subscription for the UE; as well as The data connection is established via the first subscription based at least in part on determining to maintain the first subscription as the default subscription for the UE.

49. The non-transitory computer readable medium of claim 48, wherein: The instructions are further executable to: Based at least in part on determining that the second routing policy includes the matching policy, prompting a user of the UE to select the default subscription for the UE from the first subscription and the second subscription; as well as An indication of the first subscription is received from the user, wherein maintaining the first subscription as the default subscription for the UE is based at least in part on receiving the indication of the first subscription from the user.

50. The non-transitory computer readable medium of claim 48, wherein: The instructions are further executable to: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

51. The non-transitory computer readable medium of claim 43, wherein: The instructions are further executable to: determining, based at least in part on the evaluating, that the second routing strategy lacks the matching strategy that matches the access preference rule; The data connection is established via the first subscription based at least in part on the lack of the matching policy by the second routing policy.

52. The non-transitory computer readable medium of claim 51, wherein: The instructions are further executable to: A default policy for the application is selected from the policies of the first routing policy, wherein establishing the data connection via the first subscription is based at least in part on the default policy.

53. The non-transitory computer readable medium of claim 43, wherein: The instructions are further executable to: identifying that the first subscription is a default subscription for the UE; and The first routing policy is evaluated against the matching policy based at least in part on the first subscription being the default subscription.

54. The non-transitory computer readable medium of claim 43, wherein: The first subscription is configured to provide a first data connection associated with a first quality of service for the application, and the second subscription is configured to provide a second data connection associated with a second quality of service for the application, the second quality of service being higher than the first quality of service.

55. The non-transitory computer readable medium of claim 43, wherein: The instructions for establishing the data connection are executable to: Sending a protocol data unit establishment request message to a core network to establish the data connection; and Based at least in part on sending the protocol data unit setup request message, a protocol data unit setup accept message is received from the core network.

56. The non-transitory computer readable medium of claim 55, wherein: The protocol data unit setup request message includes a data network name, a protocol data unit session type, a session and service continuity mode, or a combination thereof.

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