Mobile Terminated (MT) Paging Procedure for IP Multimedia Subsystem (IMS) Calls

Abstract

A method for wireless communication by a user equipment (UE) includes sending a list to an IMS (IP Multimedia Subsystem) service center. The list includes a plurality of mobile station international subscriber directory numbers (MSISDNs). The method also includes receiving a paging message indicating different reasons for the paging message. A method for wireless communication by a network, in response to receiving a mobile terminated call for the UE, determines whether a call originator is in a list received from the UE. The list includes a plurality of mobile station international subscriber directory numbers (MSISDNs). The network also sends a message to the UE indicating whether the mobile terminated call originated from one of the MSISDNs in the list.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications and, more particularly, to techniques and apparatus for a 5G New Radio (NR) solution for differentiating mobile terminated calls during paging procedures for IP Multimedia Subsystem (IMS) voice calls. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0003] A wireless communication network may include multiple base stations (BSs) capable of supporting communications for multiple user equipment (UEs). User equipment (UEs) may communicate with a base station (BS) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0004] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at the city, country, region, and even global levels. New Radio (NR) (also known as 5G) is an enhancement set of the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards, as well as support beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. Summary of the Invention

[0005] In one aspect of the present disclosure, a method for wireless communication by a user equipment (UE) includes sending a list to an IMS (IP Multimedia Subsystem) service center. The list includes a plurality of mobile station international subscriber directory numbers (MSISDNs). The method also includes receiving a paging message indicating different reasons for the paging message.

[0006] In another aspect of the present disclosure, a method for wireless communication by an IMS (IP Multimedia Subsystem) includes determining a cause for paging in response to receiving a mobile terminated call for a UE (User Equipment). The method also includes setting a specific DSCP (Differentiated Services Code Point) value in an IP header to indicate the cause. The method also includes sending the IP header to an SMF (Session Management Function).

[0007] In another aspect of the present disclosure, a method for wireless communication by a Session Management Function (SMF) includes determining a paging cause for a mobile terminated call based on a specific DSCP (Differentiated Services Code Point) value. The paging cause indicates a reason for the mobile terminated call. The method also includes sending a paging message including the paging cause to a UE.

[0008] In another aspect of the present disclosure, a method for wireless communication by a network includes, in response to receiving a mobile terminated call for a UE, determining whether a call originator is in a list received from the UE (user equipment). The list includes a plurality of mobile station international subscriber directory numbers (MSISDNs). The network also includes sending a message to the UE indicating whether the mobile terminated call is from one of the MSISDNs in the list.

[0009] In another aspect of the present disclosure, a UE (user equipment) for wireless communication includes a memory and at least one processor operably coupled to the memory. The memory and the processor(s) are configured to send a list to an IMS (IP Multimedia Subsystem) service center. The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The UE is also configured to receive paging messages indicating different reasons for the paging messages.

[0010] In another aspect of the present disclosure, an IMS (IP Multimedia Subsystem) includes a memory and at least one processor operatively coupled to the memory. The memory and the processor(s) are configured to, in response to receiving a mobile terminated call for a UE (user equipment), determine a cause for paging. The IMS is also configured to set a specific DSCP (Differentiated Services Code Point) value in an IP header to indicate the cause. The IMS is further configured to send the IP header to an SMF (Session Management Function).

[0011] In another aspect of the present disclosure, a session management function (SMF) for wireless communication includes a memory and at least one processor operably coupled to the memory. The memory and the processor(s) are configured to determine a paging cause for a mobile terminated call based on a specific DSCP (Differentiated Services Code Point) value. The paging cause indicates the cause of the mobile terminated call. The SMF is also configured to send a paging message including the paging cause to a UE.

[0012] In another aspect of the present disclosure, a network for wireless communication includes a memory and at least one processor operably coupled to the memory. The memory and the processor(s) are configured to, in response to receiving a mobile terminated call for a UE, determine whether the call originator is on a list received from the UE (user equipment). The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The network is also configured to send a message to the UE indicating whether the mobile terminated call originated from one of the MSISDNs on the list.

[0013] In another aspect of the present disclosure, a UE (user equipment) includes means for sending a list to an IMS (IP Multimedia Subsystem) service center. The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The UE also includes means for receiving a paging message indicating different reasons for the paging message.

[0014] In another aspect of the present disclosure, an IMS (IP Multimedia Subsystem) includes means for determining a cause of paging in response to receiving a mobile terminated call for a UE (User Equipment). The IMS also includes means for setting a specific DSCP (Differentiated Services Code Point) value in an IP header to indicate the cause. The IMS also includes means for sending the IP header to an SMF (Session Management Function).

[0015] In another aspect of the present disclosure, a Session Management Function (SMF) includes means for determining a paging cause for a mobile terminated call based on a specific DSCP (Differentiated Services Code Point) value. The paging cause indicates the cause of the mobile terminated call. The SMF also includes means for sending a paging message including the paging cause to a UE.

[0016] In another aspect of the present disclosure, a network for wireless communications includes means for, in response to receiving a mobile terminated call to the UE, determining whether a call originator is in a list received from the UE (user equipment). The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The network also includes means for sending a message to the UE indicating whether the mobile terminated call originated from one of the MSISDNs in the list.

[0017] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code is executed by a UE (User Equipment) and includes program code for sending a list to an IMS (IP Multimedia Subsystem) service center. The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The UE also includes program code for receiving a paging message indicating different reasons for the paging message.

[0018] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code is executed by an IMS (IP Multimedia Subsystem) and includes program code for determining a cause of paging in response to receiving a mobile terminated call for a UE (User Equipment). The IMS also includes program code for setting a specific DSCP (Differentiated Services Code Point) value in an IP header to indicate the cause. The IMS also includes program code for sending the IP header to an SMF (Session Management Function).

[0019] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code is executed by an SMF (Session Management Function) and includes program code for determining a paging cause for a mobile-terminated call based on a specific DSCP (Differentiated Services Code Point) value. The paging cause indicates the cause of the mobile-terminated call. The SMF also includes program code for sending a paging message including the paging cause to a UE.

[0020] In another aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code is executed by a network and includes program code for, in response to receiving a mobile terminated call for the UE, determining whether the call originator is in a list received from the UE (user equipment). The list includes a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs). The network also includes program code for sending a message to the UE indicating whether the mobile terminated call originated from one of the MSISDNs in the list.

[0021] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and processing systems as generally described with reference to and illustrated by the drawings and description.

[0022] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both their organization and method of operation, together with the associated advantages, will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and not as a definition of limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order that the various features of the present disclosure may be understood in detail, a detailed description may be given with reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings illustrate only certain aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0024] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0025] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure.

[0026] Figure 3 is a diagram illustrating a multiple subscriber identity module (SIM call) scenario according to aspects of the present disclosure.

[0027] Figure 4 is a call flow diagram illustrating a paging procedure according to aspects of the present disclosure.

[0028] Figure 5 is a call flow diagram illustrating a paging procedure for a mobile terminated IMS (IP Multimedia Subsystem) call in accordance with aspects of the present disclosure.

[0029] Figure 6 is a diagram illustrating an example process performed, for example, by a UE (User Equipment) according to aspects of the present disclosure.

[0030] Figure 7 is a diagram illustrating an example process performed, for example, by an IMS (IP Multimedia Subsystem) according to aspects of the present disclosure.

[0031] Figure 8is a diagram illustrating an example process performed, for example, by an SMF (Session Management Function) according to aspects of the present disclosure.

[0032] Figure 9 is a diagram illustrating an example process, such as performed by a network, according to aspects of the present disclosure. DETAILED DESCRIPTION

[0033] The various aspects of the present disclosure will be described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms, and the present disclosure should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will become comprehensive and complete, and these aspects will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure, whether it is realized independently of any other aspect of the present disclosure or realized in combination with any other aspect of the present disclosure. For example, any number of aspects set forth can be used to realize a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method of practicing using other structures, functions, or structures and functions other than the various aspects of the present disclosure set forth herein or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosed present disclosure can be implemented by one or more elements of the claims.

[0034] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0035] It should be noted that although aspects may be described using terminology typically associated with 5G and later wireless technologies, aspects of the present disclosure may be applied in other generation-based communication systems, such as and including 3G and / or 4G technologies.

[0036] The IP Multimedia Subsystem (IMS) architecture enables IP voice calls. One problem with mobile-terminated IMS calls is that paging messages can only indicate whether the call is a voice call or another type of call, such as an IMS Short Message Service (SMS) call or IMS signaling for IMS services. When a UE receives a paging message, the UE only knows whether the call is for IMS voice. There is concern that including only information about whether the paging is for IMS voice may not be sufficient for the user to make an informed decision about whether to accept the call. It would be helpful if the paging indication provided more information about who is making the call. The user can then decide whether the paging is important. According to the present disclosure, a paging message for a mobile-terminated IMS call indicates whether the caller is on a whitelist or blacklist created by the user.

[0037] Figure 1 is a diagram illustrating a network 100 in which various aspects of the present disclosure may be practiced. The network 100 may include a 5G or NR network or some other wireless network, such as an LTE network. The wireless network 100 may include multiple BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS provides communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS and / or the BS subsystem serving this coverage area, depending on the context in which the term is used.

[0038] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). The BS of a macro cell may be referred to as a macro BS. The BS of a pico cell may be referred to as a pico BS. The BS of a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0039] In some aspects, the cells are not necessarily fixed, and the geographic area of ​​the cells can move depending on the location of the mobile BS. In some aspects, the BSs can be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or similar interfaces using any suitable transport network.

[0040] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and transmit data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions to other UEs. Figure 1 In the example shown, a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0041] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0042] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other (eg, directly or indirectly via a wireless or wired backhaul).

[0043] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or apparatus, a biosensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0044] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. For example, MTC and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included within a housing that houses components of UE 120 (such as a processor component, a memory component, etc.).

[0045] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RATs can also be referred to as radio technologies, air interfaces, etc. Frequencies can also be referred to as carriers, frequency channels, etc. In a given geographic area, each frequency can support a single RAT to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0046] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communicating with each other). For example, the UEs 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, or vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, the UEs 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0047] As mentioned above, Figure 1 are provided as examples only. Other examples may be relevant to Figure 1 The examples described are different.

[0048] Figure 2 A block diagram shows a design 200 of a base station 110 and a UE 120, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0049] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may also process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in greater detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0050] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may also process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), etc. In some aspects, one or more components of UE 120 may be included within a housing.

[0051] On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by antennas 234, processed by demodulators 254, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0052] As described in more detail elsewhere, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of the system may perform one or more techniques associated with machine learning for nonlinearity. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of may perform or direct e.g. Figure 6-8 Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. Scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0053] In some aspects, the UE 120 may include means for receiving, means for sending, means for suspending service, means for maintaining service, means for determining, means for setting. Such means may include means for combining Figure 2 One or more components of UE 120, network controller 130, or base station 110 are depicted.

[0054] As mentioned above, only Figure 2 As an example. Other examples may differ from the Figure 2 The content described.

[0055] A mobile device may include multiple USIM (Universal Subscriber Identity Module) cards (or UICC (Universal Integrated Circuit Card)) to enable wireless communication with different cellular networks. For example, a UE may have a first USIM card for personal use with a first service provider and a second USIM card for office calls with a second service provider. For a multi-Subscriber Identity Module (SIM) User Equipment (UE), when USIM A is in connected mode, the UE periodically checks for paging for USIM B. If a multi-SIM UE accepts a call for USIM B to communicate with the network for USIM B, ongoing services in the current system (e.g., USIM A) may be interrupted.

[0056] exist Figure 3In Figure 1, a multi-SIM UE is communicating with the core network (CN1) of USIM A's service provider via the radio access network (RAN1) of USIM A's service provider. The multi-SIM UE is in connected mode for USIM A. When a page arrives from the core network (CN2) via the radio access network (RAN2) associated with USIM B's service provider while the UE is in idle / inactive mode for USIM B, the user decides how to handle the incoming page. If the user decides not to respond to the page, the UE can tune back to USIM A and remain in connected mode with USIM A. If the user accepts the page, the UE enters connected mode for USIM B and interrupts USIM A's service.

[0057] If useful information is provided in the paging message of USIM B, the UE can decide whether to communicate with the network for USIM B and avoid unnecessary interruption of services to USIM A. Figure 4 As shown, information can be placed in the paging message, for example, to indicate whether the call is a voice call or another type of call, such as an SMS call. At time 1, the core network's User Plane Function (UPF) receives a downlink (DL) data packet. At time 2, the UPF forwards the downlink data packet to the Session Management Function (SMF) in the core network. The SMF determines the paging cause based on the Differentiated Services Code Point (DSCP) value in the Type of Service (TOS) (IPv4) / Traffic Class (TC) (IPv6) value from the IP header. At time 3, the SMF sends the paging cause to the core network's Access and Mobility Management Function (AMF). At time 4, the AMF includes the paging cause in a paging message to the Radio Access Network (RAN). At time 5, the RAN sends a paging message with the paging cause to the UE. At time 6, the connection is established in the usual manner, and at time 6, downlink data can be sent from the UPF to the UE.

[0058] Figure 4 One shortcoming of the solution shown in is that the DSCP value in the IP header only distinguishes IP Multimedia Subsystem (IMS) voice from IMS Short Message Service (SMS) and IMS signaling for IMS services. When the UE receives a paging cause, the UE can only tell whether the call is for IMS voice. There is a concern that only including information about whether the paging is for IMS voice may not allow the user to make an informed decision about accepting the call. It may be helpful to include information about who is making the call in the paging indication. Then, in the case of a multi-SIM UE, the user can decide whether the paging is important and decide whether to continue service with the USIMA.

[0059] According to the present disclosure, a paging message indicates whether the caller is on a user-created whitelist or blacklist. To enable this functionality, the service provider network signals the UE in policy information the Public Land Mobile Network (PLMN)-specific paging cause value and its meaning. In other words, each network can define a different paging cause value to indicate whether the caller is on the whitelist or blacklist.

[0060] Now refer to Figure 5 , provides an illustration of an exemplary process for handling mobile terminated calls. Note that this process can operate in a multi-SIM environment or a single SIM environment. At time 1, the UE sends a whitelist and / or blacklist to the IMS service center via application layer signaling. The whitelist includes a list of phone numbers that the user considers important (e.g., Mobile Station International Subscriber Directory Number(s) (MSISDNs)). The blacklist includes a list of MSISDN(s) that the user considers unimportant.

[0061] At time 2, when a mobile terminated (MT) call is received, the Proxy Call Session Control Function (P-CSCF) in the IMS system checks with the IMS service center to determine whether the IMS voice caller's MSISDN is on the whitelist or blacklist. At time 3, the P-CSCF sets different DSCP values ​​in the IP header to indicate whether the caller is on the whitelist, blacklist, or neither. At time 4, the IMS system sends the IP packet (with the IP header) to the SMF in the core network. At time 5, the SMF determines whether different paging causes should be set based on the different DSCP values ​​in the IP header. At time 6, the SMF sends a paging message to the UE with the appropriate paging cause, which is defined according to the service provider network's policy.

[0062] When the UE receives a paging cause over the radio interface, the UE can decide whether to accept the IMS voice call based on the paging cause. For example, if the paging cause indicates that the caller is on the whitelist, the UE can accept the paging. In the case of a multi-SIM UE, the UE can enter connected mode with USIM B and enter idle / inactive mode with USIM A. In another example, if the paging cause indicates that the caller is on the blacklist, the UE can decide to ignore the paging. In the case of a multi-SIM UE, the UE can remain in connected mode with USIM A.

[0063] Although the foregoing description is about indicating whether an MSISDN is in a whitelist or blacklist, the present disclosure is not limited thereto. For example, a paging message may indicate different priorities or different values ​​(e.g., 1, 2, 3, 4, etc.). In other words, a paging message may not explicitly indicate whether an MSISDN is in a list. The paging message may indicate a value that is interpreted by the UE as the MSISDN in the list that triggered the paging.

[0064] As mentioned above, Figure 3-5 Provided as an example only. Other examples may differ from those regarding Figure 3-5 Examples described.

[0065] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 600 is an example of a mobile terminated paging procedure.

[0066] like Figure 6 As shown, in some aspects, process 600 may include sending a list including a plurality of mobile station international subscriber directory numbers (MSISDNs) to an IMS (IP Multimedia Subsystem) service center (block 602). For example, a UE (user equipment) (e.g., using antenna 252, modulator 254, TX MIMO processor 266, transmit processor 264, controller processor 280, and / or memory 282) sends the list.

[0067] like Figure 6 As shown, in some aspects, process 600 may include receiving a paging message indicating a different reason for the paging message (block 604). For example, the UE receives the paging message (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller processor 280, and / or memory 282).

[0068] Figure 7 is a diagram illustrating an example process 700, such as performed by an IMS (IP Multimedia Subsystem), in accordance with aspects of the present disclosure. The example process 700 is an example of a mobile terminated paging procedure.

[0069] like Figure 7 As shown, in some aspects, process 700 may include determining a cause for paging in response to receiving a mobile terminated call for a UE (user equipment) (block 702). For example, an IMS (IP Multimedia Subsystem) (e.g., using communication unit 294, controller processor 290, and / or memory 292) determines the cause for paging.

[0070] like Figure 7As shown, in some aspects, process 700 may include setting a specific DSCP value in the IP header to indicate the cause (block 704). For example, the IMS (e.g., using communication unit 294, controller processor 290, and / or memory 292) sets the specific DSCP value.

[0071] like Figure 7 As shown, in some aspects, process 700 may include sending the IP header to an SMF (session management function) (block 706). For example, the IMS (e.g., using communication unit 294, controller processor 290, and / or memory 292) sends the IP header.

[0072] Figure 8 is a diagram illustrating an example process 800, performed, for example, by an SMF (Session Management Function), in accordance with aspects of the present disclosure. The example process 800 is an example of a mobile terminated paging procedure.

[0073] like Figure 8 As shown, in some aspects, process 800 may include determining a paging cause for a mobile terminated call based on a particular DSCP (Differentiated Services Code Point) value, the paging cause indicating a cause of the mobile terminated call (block 802). For example, an SMF (session management function) (e.g., using communication unit 294, controller processor 290, and / or memory 292) determines the paging cause.

[0074] like Figure 8 As shown, in some aspects, process 800 may include sending a paging message including a paging cause to the UE (block 804). For example, the SMF (e.g., using communication unit 294, controller processor 290, and / or memory 292) sends the paging message.

[0075] Figure 9 is a diagram illustrating an example process 900, performed, for example, by a network, in accordance with aspects of the present disclosure. The example process 900 is an example of a mobile terminated paging procedure.

[0076] like Figure 9 As shown, in some aspects, process 900 may include program code that, in response to receiving a mobile terminated call for the UE, determines whether a call originator is in a list received from the UE (user equipment), the list including a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs) (block 902). For example, a network (e.g., using communication unit 294, controller processor 290, and / or memory 292) determines the call.

[0077] like Figure 9As shown, in some aspects, process 900 may include sending a message to the UE indicating whether the mobile terminated call is from one of the MSISDNs in the list (block 904). For example, the network (e.g., using communication unit 294, controller processor 290, and / or memory 292) sends the message.

[0078] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the aspects.

[0079] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0080] Some aspects are described herein in conjunction with thresholds. As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0081] It will be apparent that the systems and / or methods described herein may be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in these respects. Accordingly, the operation and behavior of the systems and / or methods are described herein without reference to specific software code—it being understood that software and hardware may be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0082] Although the specific combination of feature is set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, multiple features in these features can be combined in a manner not specifically set forth in the claims and / or not specifically disclosed in the specification. Although each dependent claim listed below can directly be subordinate to only one claim, the disclosure of various aspects includes the combination of each dependent claim and each other claim in the claim set. The phrase "at least one" related to the project list refers to any combination of those projects, including single members. As an example, "at least one of a, b, or c" is intended to contain a, b, c, ab, ac, bc, and abc and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other arrangement of a, b, and c).

[0083] Unless explicitly described, any element, action, or instruction used herein should not be interpreted as critical or necessary. In addition, the articles "a" and "an" used herein are intended to include one or more projects and can be used interchangeably with "one or more". In addition, the terms "set" and "group" used herein are intended to include one or more projects (e.g., related projects, unrelated projects, combinations of related and unrelated projects, etc.), and can be used interchangeably with "one or more". In the case of only intending to include one project, the phrase "only one" or similar language is used. In addition, the terms "has", "have", "having", etc. used herein are intended to be open terms. In addition, unless explicitly stated otherwise, the phrase "based on" is intended to represent "based at least in part on".

Claims

1. A method for wireless communication by a user equipment (UE), comprising: Sending a list to an IP Multimedia Subsystem IMS service center, the list comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs); as well as receiving a paging message, the paging message indicating different reasons for the paging message, The paging message indicates whether the paging corresponds to one of the MSISDNs via a paging cause, and the paging cause is indicated by a specific Differentiated Services Code Point (DSCP) value set in an IP header.

2. The method according to claim 1, wherein The different cause indicates whether the call is from a call originator corresponding to one of the MSISDNs in the list.

3. The method according to claim 1, wherein The list includes a whitelist of primary contacts.

4. The method according to claim 1, wherein The list includes a blacklist of secondary contacts.

5. The method according to claim 2, wherein: When the paging message is received on the second Universal Subscriber Identity Module (USIM), the UE is in connected mode on the first USIM.

6. The method according to claim 5, further comprising suspending the service of the first USIM, wherein: The list includes a whitelist, and the call is from an MSISDN on the whitelist.

7. The method according to claim 5, further comprising maintaining the service of the first USIM, wherein The list includes a blacklist, and the call is from an MSISDN on the blacklist.

8. The method according to claim 1, wherein The sending is performed via application layer signaling.

9. The method of claim 1, further comprising receiving a definition of a paging cause in policy information.

10. A method for wireless communication via an IP Multimedia Subsystem (IMS) network, comprising: In response to receiving a mobile terminated call for user equipment UE, determining a cause of paging; setting a specific Differentiated Services Code Point (DSCP) value in the IP header to indicate the cause, the cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDN) in a list received from the user equipment (UE); and The IP header is sent to the session management function SMF.

11. The method according to claim 10, wherein: The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with a primary contact.

12. The method according to claim 10, wherein: The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with secondary contacts.

13. A method for wireless communication by a session management function (SMF), comprising: determining a paging cause for a mobile terminated call based on a specific Differentiated Services Code Point (DSCP) value, the paging cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDNs) in a list received from the user equipment (UE); and Sending a paging message including the paging cause to the UE.

14. The method according to claim 13, wherein The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of MSISDNs associated with a primary contact.

15. The method according to claim 13, wherein The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist including a plurality of MSISDNs associated with secondary contacts.

16. A method for wireless communication by a network, comprising: In response to receiving a mobile terminated call to a user equipment (UE), determining whether a call originator is in a list received from the UE, the list comprising a plurality of mobile station international subscriber directory numbers (MSISDNs); as well as sending a message to the UE, the message indicating whether the mobile terminated call is from one of the MSISDNs in the list, The sending further comprises setting a specific Differentiated Services Code Point (DSCP) value in an Internet Protocol (IP) header, and determining a paging cause based on the specific DSCP value, wherein the paging cause indicates whether the mobile terminated call is from one of the MSISDNs in the list.

17. The method according to claim 16, wherein The list includes a whitelist of primary contacts.

18. The method according to claim 16, wherein The list includes a blacklist of secondary contacts.

19. A user equipment (UE) for wireless communication, comprising: Memory; as well as at least one processor communicatively coupled to the memory, the memory and the at least one processor being configured to: sending a list to an IP Multimedia Subsystem IMS service center, the list comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs); and receiving a paging message, the paging message indicating different reasons for the paging message, The paging message indicates whether the paging corresponds to one of the MSISDNs via a paging cause, and the paging cause is indicated by a specific Differentiated Services Code Point (DSCP) value set in an IP header.

20. The UE according to claim 19, wherein: The different cause indicates whether the call is from a call originator corresponding to one of the MSISDNs in the list.

21. The UE according to claim 19, wherein: The list includes a whitelist of primary contacts.

22. The UE according to claim 19, wherein: The list includes a blacklist of secondary contacts.

23. The UE according to claim 20, wherein: When the paging message is received on the second Universal Subscriber Identity Module (USIM), the UE is in connected mode on the first USIM.

24. The UE according to claim 23, wherein: The at least one processor is further configured to suspend service of the first USIM, wherein the list comprises a whitelist, and the call comes from an MSISDN on the whitelist.

25. The UE according to claim 23, wherein: The at least one processor is further configured to maintain service of the first USIM, wherein the list comprises a blacklist, and the call is from an MSISDN on the blacklist.

26. The UE according to claim 19, wherein The at least one processor is further configured to send via application layer signaling.

27. The UE according to claim 19, wherein The at least one processor is further configured to receive a definition of the paging cause in policy information.

28. An IP Multimedia Subsystem (IMS) for wireless communications, comprising: Memory; as well as at least one processor operatively coupled to the memory, the memory and the at least one processor being configured to: In response to receiving a mobile terminated call for user equipment UE, determining a cause of paging; setting a specific Differentiated Services Code Point (DSCP) value in an IP header to indicate the cause, the cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDNs) in a list received from the UE; and The IP header is sent to the session management function SMF.

29. The IMS according to claim 28, wherein The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with a primary contact.

30. The IMS of claim 29, wherein: The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with secondary contacts.

31. A session management function (SMF) for wireless communication, comprising: Memory; as well as at least one processor operatively coupled to the memory, the memory and the at least one processor being configured to: determining a paging cause for a mobile terminated call based on a specific Differentiated Services Code Point (DSCP) value, the paging cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDNs) in a list received from the user equipment (UE); and Sending a paging message including the paging cause to the UE.

32. The SMF of claim 31 , wherein: The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of MSISDNs associated with a primary contact.

33. The SMF of claim 31 , wherein: The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist including a plurality of MSISDNs associated with secondary contacts.

34. A network for wireless communication, comprising: Memory; as well as at least one processor operatively coupled to the memory, the memory and the at least one processor being configured to: In response to receiving a mobile terminated call to a user equipment (UE), determining whether a call originator is in a list received from the UE, the list comprising a plurality of mobile station international subscriber directory numbers (MSISDNs); as well as sending a message to the UE, the message indicating whether the mobile terminated call is from one of the MSISDNs in the list, The sending further comprises setting a specific Differentiated Services Code Point (DSCP) value in an Internet Protocol (IP) header, and determining a paging cause based on the specific DSCP value, wherein the paging cause indicates whether the mobile terminated call is from one of the MSISDNs in the list.

35. A network according to claim 34, wherein The list includes a whitelist of primary contacts.

36. The network of claim 34, wherein: The list includes a blacklist of secondary contacts.

37. A user equipment (UE) for wireless communication, comprising: means for sending a list comprising a plurality of Mobile Station International Subscriber Directory Numbers MSISDN to an IP Multimedia Subsystem IMS service centre; as well as means for receiving a paging message indicating different causes for said paging message, The paging message indicates whether the paging corresponds to one of the MSISDNs via a paging cause, and the paging cause is indicated by a specific Differentiated Services Code Point (DSCP) value set in an IP header.

38. The UE according to claim 37, wherein: The different cause indicates whether the call is from a call originator corresponding to one of the MSISDNs in the list.

39. The UE according to claim 37, wherein: The list includes a whitelist of primary contacts.

40. The UE according to claim 37, wherein The list includes a blacklist of secondary contacts.

41. The UE according to claim 38, wherein When the paging message is received on the second Universal Subscriber Identity Module (USIM), the UE is in connected mode on the first USIM.

42. The UE according to claim 41, further comprising means for suspending service of the first USIM, wherein The list includes a whitelist, and the call is from an MSISDN on the whitelist.

43. The UE according to claim 41, further comprising means for maintaining services of the first USIM, wherein The list includes a blacklist, and the call is from an MSISDN on the blacklist.

44. The UE according to claim 37, wherein Said means for transmitting is done via application layer signaling.

45. The UE of claim 37, further comprising means for receiving a definition of a paging cause in policy information.

46. ​​An IP Multimedia Subsystem (IMS) for wireless communications, comprising: means for determining a cause of paging in response to receiving a mobile terminated call for user equipment UE; means for setting a specific Differentiated Services Code Point (DSCP) value in an IP header to indicate the cause, the cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDN) in a list received from the UE; as well as means for sending said IP header to a session management function, SMF.

47. The IMS of claim 46, wherein: The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with a primary contact.

48. The IMS of claim 46, wherein: The cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDN) associated with secondary contacts.

49. A session management function (SMF) for wireless communication, comprising: means for determining a paging cause for a mobile terminated call based on a specific Differentiated Services Code Point (DSCP) value, the paging cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDN) in a list received from a user equipment (UE); and means for sending a paging message including the paging cause to the UE.

50. The SMF of claim 49, wherein The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a whitelist received from the UE, the whitelist comprising a plurality of MSISDNs associated with a primary contact.

51. The SMF of claim 49, wherein The paging cause indicates whether the mobile terminated call is from a Mobile Station International Subscriber Directory Number (MSISDN) in a blacklist received from the UE, the blacklist including a plurality of MSISDNs associated with secondary contacts.

52. A network for wireless communication, comprising: means for determining, in response to receiving a mobile terminated call to a user equipment (UE), whether a call originator is in a list received from the UE, the list comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs); as well as means for sending a message to the UE, the message indicating whether the mobile terminated call is from one of the MSISDNs in the list, The sending further comprises setting a specific Differentiated Services Code Point (DSCP) value in an Internet Protocol (IP) header, and determining a paging cause based on the specific DSCP value, wherein the paging cause indicates whether the mobile terminated call is from one of the MSISDNs in the list.

53. A network according to claim 52, wherein The list includes a whitelist of primary contacts.

54. The network of claim 52, wherein: The list includes a blacklist of secondary contacts.

55. A non-transitory computer-readable medium having program code recorded thereon, the program code being executed by a user equipment (UE) and comprising: program code for sending a list to an IP Multimedia Subsystem (IMS) service center, the list comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs); as well as program code for receiving a paging message indicating different reasons for the paging message, The paging message indicates whether the paging corresponds to one of the MSISDNs via a paging cause, and the paging cause is indicated by a specific Differentiated Services Code Point (DSCP) value set in an IP header.

56. A non-transitory computer-readable medium having program code recorded thereon, the program code being executed by an IP Multimedia Subsystem (IMS) and comprising: program code for determining a cause of paging in response to receiving a mobile terminated call to a user equipment UE; program code for setting a specific Differentiated Services Code Point (DSCP) value in an IP header to indicate the cause, the cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDNs) in a list received from the UE; as well as Program code for sending said IP header to a session management function SMF.

57. A non-transitory computer-readable medium having program code recorded thereon, the program code being executed by a session management function (SMF) and comprising: program code for determining a paging cause for a mobile terminated call based on a particular Differentiated Services Code Point (DSCP) value, the paging cause indicating whether the mobile terminated call is from one of the Mobile Station International Subscriber Directory Numbers (MSISDN) in a list received from a user equipment (UE); and Program code for sending a paging message including the paging cause to the UE.

58. A non-transitory computer-readable medium having program code recorded thereon, the program code being executed by a network and comprising: program code for, in response to receiving a mobile terminated call to a user equipment (UE), determining whether a call originator is in a list received from the UE, the list comprising a plurality of Mobile Station International Subscriber Directory Numbers (MSISDNs); as well as program code for sending a message to the UE, the message indicating whether the mobile terminated call is from one of the MSISDNs in the list, The sending further comprises setting a specific Differentiated Services Code Point (DSCP) value in an Internet Protocol (IP) header, and determining a paging cause based on the specific DSCP value, wherein the paging cause indicates whether the mobile terminated call is from one of the MSISDNs in the list.

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