Paging coordination via internet

Abstract

Certain aspects of the present disclosure provide methods and apparatus for identifying a general subscription by a user having a plurality of general subscription identification modules (i.e., common subscription identification modules, techniques for receiving and responding to paging from a network of a first USIM without activating a receiver on a network of a second USIM of the UE by receiving paging (from the network of the first USIM) on a receiver active on the network of the second USIM of the UE (e.g., a multi-USIM device) or a concurrent radio access technology (C-RAT) capability. A method, which may be performed by a user equipment (UE), includes transmitting a request for registering a paging event in a registration request message to an access and management function (AMF) of a network of a first Universal Subscriber Identifier Module (USIM) of the UE; transmitting a paging public user identifier (PPUID) of the UE to a paging server via a network of a second USIM of the UE in a protocol data unit (PDU) session, where the paging server is associated with the network of the first USIM; and receiving a message associated with the first USIM via a PDU session or another PDU session via a network of the second USIM.

Description

[0001] This application is a divisional application of the Chinese patent application with the application date of February 28, 2020, application number 202080097335.3 and invention name “Paging Coordination via the Internet”. Technical Field

[0002] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for coordinating paging of a user equipment (UE) having two or more Universal Subscriber Identity Modules (USIMs) via the Internet. Background Art

[0003] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, Advanced LTE (LTE-A) systems, 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name a few.

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional and even global levels. New radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is a collection of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL) to better integrate with other open standards. To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0005] However, as the demand for mobile broadband access continues to increase, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies. Summary of the invention

[0006] The systems, methods, and devices of the present disclosure each have several aspects, no single aspect of which is solely responsible for its desirable attributes. Without limiting the scope of the present disclosure as expressed by the claims that follow, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description," those skilled in the art will understand how the features of the present disclosure provide advantages including improved utilization of transmission resources.

[0007] Certain aspects provide a method for wireless communication by a user equipment (UE). The method generally includes: sending a request for registration of paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; sending a paging public user identifier (PPUID) of the UE to a paging server via a network of a second USIM of the UE in a protocol data unit (PDU) session, wherein the paging server is associated with the network of the first USIM; and receiving a message associated with the first USIM via a PDU session of the network of the second USIM or another PDU session.

[0008] Certain aspects provide a method for wireless communication by a paging server in a base station (BS). The method generally includes: receiving a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein the paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE; and sending a message associated with the first USIM to the UE via the PDU session of the network via the second USIM or another PDU session.

[0009] Certain aspects provide a method for wireless communication by an access and management function (AMF) in a base station (BS). The method generally includes: receiving a request for registering a paging event in a registration request message from a user equipment (UE) via a network of a first universal subscriber identifier module (USIM) of the UE; sending an indication of a paging server to the UE in response to the request; and sending a message associated with the network of the first USIM to the UE via a network of a second USIM.

[0010] To achieve the foregoing and related ends, one or more aspects include features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] A more particular description of what has been briefly summarized above may be obtained by reference to the various aspects of some of them shown in the accompanying drawings, so that the manner in which the above-mentioned features of the present disclosure are understood in detail. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit of other equally effective aspects.

[0012] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0013] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0014] Figure 3 is a flow diagram illustrating example operations for wireless communications by a UE in accordance with certain aspects of the present disclosure.

[0015] Figure 4 is a network architecture according to aspects of the present disclosure.

[0016] Figure 5 is a call flow diagram illustrating communications in which a UE provides a paging public user identifier (PPUID), in accordance with certain aspects of the present disclosure.

[0017] Figure 6 is a call flow diagram illustrating communications in which a user data manager provides a paging public user identifier (PPUID), in accordance with certain aspects of the present disclosure.

[0018] Figure 7 is a flow diagram illustrating example operations that may be performed by a paging server for wireless communications in accordance with certain aspects of the present disclosure.

[0019] Figure 8 is a flow diagram illustrating example operations for wireless communications that may be performed by an access and mobility management function (AMF) in a BS in accordance with certain aspects of the present disclosure.

[0020] Fig. 9 is a call flow illustrating communications in which a UE receives a push notification in accordance with certain aspects of the present disclosure.

[0021] Fig.10 is a call flow illustrating communications in which a UE responds to a push notification in accordance with certain aspects of the present disclosure.

[0022] Fig.11 It is shown that various aspects of the present disclosure may include a method configured to perform Figure 3 The operation of the various components of a communications device is shown in FIG.

[0023] Fig.12 It is shown that various aspects of the present disclosure may include a method configured to perform Figure 7 and Figure 8 The operation of the various components of a communications device is shown in FIG.

[0024] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0025] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for a UE with multiple universal subscription identity modules (i.e., multi-USIM devices) or concurrent radio access technology (C-RAT) capabilities to receive and respond to paging from a network of a first USIM by receiving paging (from the network of the first USIM) on a receiver active on the network of a second USIM of the UE without activating a receiver on the network. UEs with C-RAT capabilities and multi-USIM UEs may not have the ability to receive data or signaling simultaneously on two access links. An important scenario is when the UE is in idle or inactive mode on a first network associated with a first USIM while the UE is in connected mode on a second network associated with a second USIM. In previously known techniques, the UE switches from receiving downlink (DL) data on the second network to receiving paging on the first network. In the described scenario, the UE cannot or does not prefer to be connected in both networks; this may be, for example, due to resource and / or capability limitations of the UE. According to aspects of the present disclosure, a UE may receive paging from a first network via a second network, and thus the UE does not need to periodically switch from the second network to receive paging via the first network, and thus the UE may avoid potential service interruption on the second network.

[0026] The following description provides an example of a technology for sending a request for a registration paging event in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of a UE by a multi-USIM device and receiving a paging message from a network of a first USIM via a network of a second USIM, and does not limit the scope, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed may be changed without departing from the scope of the present disclosure. Various examples may omit, replace or add various processes or components as appropriate. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in certain other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions other than or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of a claim. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects.

[0027] Typically, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, 5G NR RAT networks can be deployed.

[0028] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network).

[0029] like Figure 1As shown, the wireless communication network 100 may include several base stations (BSs) 110a-110z (each also individually referred to herein as BS 110 or collectively referred to as BS 110) and other network entities. BS 110 may provide communication coverage for a specific geographic area, which is sometimes referred to as a "cell", which may be stationary or may move according to the location of the mobile BS 110. In some examples, BS 110 may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless communication network 100 through various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1 In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. BS 110 communicates with user equipment (UE) 120a-y (each also individually referred to herein as UE 120 or collectively referred to as UE 120) in wireless communication network 100. UE 120 (e.g., 120x, 120y, etc.) may be dispersed throughout wireless communication network 100, and each UE 120 may be stationary or mobile.

[0030] According to certain aspects, BS 110 and UE 120 may be configured to enable a multi-USIM UE to register a paging public user identifier (PPUID) with a network associated with a first USIM and receive paging and other messages from a network associated with a first USIM via a network associated with a second USIM. Figure 1As shown, BS110a includes a paging manager 112. According to aspects of the present disclosure, the paging manager 112 may be configured to receive a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein a paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE; and send a message associated with the first USIM to the UE via the PDU session of the network of the second USIM or another PDU session. In some examples, the paging manager 112 (e.g., a user data manager function) may determine the PPUID for the UE and provide the PPUID to the UE. The network controller 130 may include an access and mobility management function (AMF), which may be configured to receive a request for registering a paging event in a registration request message from the UE via a network of a first universal subscriber identifier module (USIM) of the user equipment (UE); in response to the request, send an indication of the paging server to the UE; and send a message associated with the network of the first USIM to the UE via the network of the second USIM. Although shown in network controller 130, AMF 132 may be located in base station 110 or another network entity. Figure 1 As shown, UE 120a includes a PPUID manager 122. According to aspects of the present disclosure, the PPUID manager 122 may be configured to send a request for registration of paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; send a paging public user identifier (PPUID) of the UE to a paging server (e.g., a paging server function in BS 110) of a network of a second USIM of the UE in a protocol data unit (PDU) session, wherein the paging server is associated with the network of the first USIM; and receive a message associated with the first USIM via a PDU session of the network of the second USIM or another PDU session.

[0031] The wireless communication network 100 may also include a relay station (e.g., relay station 110r) (also referred to as a relay, etc.) that receives transmissions of data and / or other information from an upstream station (e.g., BS110a or UE 120r) and sends transmissions of the data and / or other information to a downstream station (e.g., UE 120 or BS110), or which relays transmissions between UEs 120 to facilitate communication between devices.

[0032] A network controller 130 may couple to a set of BSs 110 and provide coordination and control for these BSs 110. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (eg, directly or indirectly) via a wireless or wired backhaul.

[0033] Figure 2 It is shown (for example, Figure 1 1 and 120a in a wireless communication network 100, which may be used to implement aspects of the present disclosure.

[0034] At BS 110a, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GCPDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. The processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS). If applicable, a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, and may provide output symbol streams to modulators (MODs) 232a-232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0035] At UE 120a, antennas 252a-252r may receive downlink signals from BS 110 and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to data sink 260, and provide decoded control information to controller / processor 280.

[0036] On the uplink, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by a demodulator in a transceiver 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the BS 110a, the uplink signal from the UE 120a may be received by the antenna 234, processed by the modulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain the control information and decoded data transmitted by the UE 120a. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240 .

[0037] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0038] The controller / processor 240 and / or other processors and modules at BS 110a may perform or direct the execution of processes for the techniques described herein. Figure 2 As shown, the controller / processor 240 of BS110a has a paging manager 241, which can be configured to receive a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein the paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE; and to send a message associated with the first USIM to the UE via the PDU session via the network of the second USIM or another PDU session. The base station 110 may include an access and mobility management function (AMF) 232, which can be configured to receive a request for a registration paging event in a registration request message from the UE via the network of the first universal subscriber identifier module (USIM) of the user equipment (UE); send an indication of the paging server to the UE in response to the request; and send a message associated with the network of the first USIM to the UE via the network of the second USIM. Although shown in BS110, the AMF 132 may be located in another network entity, or may be a software function running on the controller processor 240. As shown in BS110, the AMF 132 may be located in another network entity, or may be a software function running on the controller processor 240. Figure 2As shown in , the controller / processor 280 of UE 120a has a PPUID manager 241, which can be configured to send a request for registration paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; to send a paging public user identifier (PPUID) of the UE to a paging server via a network of a second USIM of the UE in a protocol data unit (PDU) session, wherein the paging server is associated with the first USIM; and to receive a message associated with the first USIM via a PDU session of the network via the second USIM or another PDU session. Although shown at the controller / processor 280 and the controller / processor 240, other components of the UE 120a and the BS 110a may be used to perform the operations described herein.

[0039] UEs with C-RAT capability and multi-USIM UEs may not have the ability to receive data or signaling on two access links simultaneously. An important scenario is when the UE is in idle or inactive mode on a first network associated with a first USIM while the UE is in connected mode on a second network associated with a second USIM. In previously known techniques, the UE switches from receiving downlink (DL) data on the second network to receiving paging on the first network. In the described scenario, the UE cannot or does not prefer to be connected in both networks; this may be due to resource and / or capability limitations of the UE, for example. According to aspects of the present disclosure, the UE can receive paging from the first network via the second network, so the UE does not need to periodically switch from the second network to receiving paging from the first network, and the UE can therefore avoid potential service interruption on the second network.

[0040] Therefore, what is needed are techniques and apparatus for a UE with multiple Universal Subscription Identity Modules (ie, multi-USIM devices) or concurrent radio access technology (C-RAT) capabilities to register a paging common user identifier so that the UE can be paged.

[0041] Example Paging Coordination via the Internet

[0042] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for a UE with multiple Universal Subscription Identity Modules (i.e., a multi-USIM device) or concurrent radio access technology (C-RAT) capabilities to receive and respond to paging from a network of a first USIM by receiving the paging (from the network of the first USIM) on a receiver active on the network of a second USIM of the UE without activating the receiver on that network.

[0043] Figure 3300 for wireless communications in accordance with certain aspects of the present disclosure. Operations 300 may be performed, for example, by a UE (e.g., such as UE 120a in wireless communication network 100). Operations 300 may be implemented as a process on one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the UE in operation 300 may be performed, for example, via one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the UE may be implemented via a bus interface of one or more processors (eg, controller / processor 280) that obtain and / or output signals.

[0044] At block 305, operations 300 may begin by sending a request in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE to register a paging event of a paging public user identifier (PPUID) of the UE.

[0045] At block 310, the operations 300 continue with sending a paging public user identifier (PPUID) of the UE via a network of a second USIM of the UE to a paging server associated with a network of the first USIM in a protocol data unit (PDU) session.

[0046] At block 315, the operations 300 continue with receiving a message associated with the first USIM via the PDU session or another PDU session via the network of the second USIM.

[0047] According to aspects of the present disclosure, the UE performing operation 300 may determine the PPUID based on a higher layer operating system (HLOS) identifier (ID) of the UE.

[0048] In aspects of the present disclosure, the UE performing operation 300 may determine the PPUID based on an application identifier (ID) of the UE.

[0049] According to aspects of the present disclosure, the UE performing operation 300 may receive the PPUID from a User Data Manager (UDM) of a network of the first USIM.

[0050] In aspects of the present disclosure, the message of block 315 may include a paging message from a paging server.

[0051] According to aspects of the present disclosure, the message of block 315 may include a data transmission.

[0052] In aspects of the present disclosure, sending the PPUID as in block 310 may include sending the PPUID in a paging coordination container.

[0053] According to aspects of the present disclosure, after sending the PPUID to the paging server and before receiving the message, the UE performing operation 300 may avoid monitoring the network of the first USIM for a period longer than a configured discontinuous reception (DRX) cycle of the UE.

[0054] In various aspects of the present disclosure, a technique for UE registration paging coordination is provided, so that a multi-USIM UE can receive paging from the network of a first USIM while listening to the network of a second USIM. The UE's registration for paging coordination may include a registration paging public user identifier (PPUID), by which the UE can be identified for paging by multiple network entities and applications. The UE may provide the PPUID, or the user data manager may provide the PPUID. According to various aspects of the present disclosure, a centralized access and mobility management function (AMF) may be selected (e.g., by a network controller) to provide access and mobility management functions to the UE. In various aspects of the present disclosure, the UE avoids listening to paging and performing mobility registration updates on the first network while maintaining a connection on the second network (e.g., in connected mode). When the AMF of the first network has data or a paging message to be delivered to the UE, the AMF may send a push notification to the UE via the second network. If the UE receives a push notification, the UE may determine to send a non-access layer message to the AMF via the first network to resume the signaling connection. The UE may determine to continue communicating via the second network from which data packets may be received.

[0055] According to aspects of the present disclosure, the UE may provide the above-mentioned PPUID.

[0056] Figure 4 4 is a network architecture 400 illustrating the operation of a UE 410, a radio access network (RAN) 420, a user plane function (UPF) 425, the Internet 430, a paging server 440, the RAN 445, and an AMF 450 according to aspects of the present disclosure. According to aspects of the present disclosure, the UE has previously registered with the AMF 405 and the paging server 440 for paging coordination. As shown at 460, when the AMF obtains data for the UE, the AMF does not send a paging request to the RAN 445. Instead, according to aspects of the present disclosure, the AMF sends a paging request to the paging server 440, which sends the paging request to the UPF 425 and the RAN 420 via the Internet, as shown at 470. The RAN 420 then pages the UE.

[0057] In various aspects of the present disclosure, an upper layer (i.e., a high-level operating system (HLOS)) sends or provides a paging public user ID to a lower layer (i.e., a non-access stratum (NAS)) for a USIM A (i.e., a first USIM) of a UE. The UE may determine a PPUID based on the HLOS ID of the UE.

[0058] According to various aspects of the present disclosure, a UE (eg, Figure 4 The UE 410 in the registration procedure indicates to the AMF that the UE wants to register for paging coordination events during the registration procedure with the AMF. The UE may also include a paging coordination container in the registration procedure. The paging coordination container may include a PPUID.

[0059] In various aspects of the present disclosure, the paging application container is used to send PPUID between the UE and the paging server (eg, the paging server 440), and is transparent to the AMF. The AMF may store the paging application container, but may not know the meaning of the container.

[0060] According to aspects of the present disclosure, the PPUID is used by a paging server (e.g., paging server 440) to perform coordinated paging. TM or provided by the iOS operating system, the PPUID can be Google TM ID or application (for example, Facebook TM )ID, or if the service is provided by an application, the PPUID can be the application ID.

[0061] In various aspects of the present disclosure, the AMF of the network for the first USIM may acknowledge the UE's request to register for paging coordination events and indicate to the UE an address (e.g., a network access identifier (NAI) or a uniform resource identifier (URI)) of a paging server for the network.

[0062] According to various aspects of the present disclosure, an upper layer (e.g., HLOS) may send a PPUID to a lower layer (e.g., NAS) for USIM B (i.e., second USIM) of the UE. USIM B may register a paging coordination event with paging server A (e.g., paging server 440) via a PDU session with paging server A.

[0063] In aspects of the present disclosure, the UE and the paging server may support user plane signaling, for example, signaling using the HTTP protocol.

[0064] According to aspects of the present disclosure, a user data manager (UDM) may provide a PPUID to a UE.

[0065] Figure 55 is a call flow 500 illustrating communications between a UE 510, an AMF 520 of a network associated with a first USIM 512 of the UE, an AMF 530 of a network associated with a second USIM 514 of the UE, a service management function (SMF) 532 of the network associated with the second USIM of the UE, a user plane function (UPF) 534 of the network associated with the second USIM of the UE, and a paging server 540 of the network associated with the first USIM of the UE according to aspects of the present disclosure. At 550, the UE registers with the network via the second USIM 514. At 552, the upper layer 516 passes the PPUID of the UE (e.g., down the protocol stack) to the first USIM. At 554, the UE sends a registration request to the AMF 520 of the network associated with the first USIM using a paging coordination container. At 556, the AMF 520 of the network associated with the first USIM returns a registration confirmation (ACK) including the address of the paging server 540. At 558, upon receiving the Registration ACK, the upper layer delivers the PPUID to the second USIM, which then sends a Paging Coordination Event Registration Request via UPF 534 to register the PPUID to the address of the paging server 540. At 560, the paging server 540 returns a success message to the UE via UPF 534 and the second USIM 514.

[0066] In various aspects of the present disclosure, a UE (e.g., UE 510) indicates to an AMF (e.g., AMF 520) that the UE wants to register for paging events during a registration procedure with the AMF.

[0067] According to various aspects of the present disclosure, the UDM may store a mapping between a subscription permanent identifier (SUPI) of a UE and a PPUID. The UDM may provide the PPUID associated with the SUPI to the AMF.

[0068] In various aspects of the present disclosure, the AMF may send a registration accept message to the first USIM (eg, USIM 512) of the UE having the PPUID.

[0069] According to aspects of the present disclosure, a lower layer (eg, NAS) of a protocol stack of a first USIM (eg, USIM 512) may pass a paging public user ID to an upper layer (eg, HLOS) of a protocol stack of a UE.

[0070] In aspects of the present disclosure, the upper layer (eg, HLOS) may send the PPUID to the lower layer (NAS) of the protocol stack of the second USIM (eg, USIM 514). The second USIM may register for paging coordination events with paging server A via a PDU session to paging server A.

[0071] According to aspects of the present disclosure, the UE and the paging server may support user plane signaling, for example, via Hypertext Transfer Protocol (HTTP).

[0072] Figure 6 6 is a call flow 600 illustrating communications between a UE 610, an AMF 620 of a network associated with a first USIM 612 of the UE, an AMF 630 of a network associated with a second USIM 614 of the UE, a service management function (SMF) 632 of the network associated with the second USIM of the UE, a user plane function (UPF) 634 of the network associated with the second USIM of the UE, a UDM 636, and a paging server 640 of the network associated with the first USIM of the UE in accordance with aspects of the present disclosure. At 650, the UE registers with the network via the second USIM 614. At 652, the UE sends a registration request indicating support for paging coordination to the AMF 620 of the network associated with the first USIM. At 654, the AMF 620 requests a mapping of the SUPI of the UE to the PPUID of the UE from the UDM 636. At 656, the AMF 620 of the network associated with the first USIM returns a registration acceptance including the address of the paging server 640 and the PPUID. At 658, upon receiving the registration acceptance, the first USIM 612 passes the PPUID and the paging server address to the upper layer 616 of the UE, which passes the PPUID and the paging server address to the second USIM 614, which then sends a paging coordination event registration request via the UPF 634 to register the PPUID to the address of the paging server 640. At 660, the paging server 640 returns a success message to the UE via the UPF 634 and the second USIM 614.

[0073] Figure 7 700 for wireless communication in accordance with certain aspects of the present disclosure. Operation 700 may be performed, for example, by a paging server in a BS (e.g., such as BS 110a in wireless communication network 100). Operation 700 may be a complementary operation performed by the BS to operation 300 performed by the UE. Operation 700 may be implemented as a process in one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the BS in operation 700 may be performed, for example, via one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface of one or more processors (eg, controller / processor 240) that obtain and / or output signals.

[0074] At box 705, operation 700 may begin by receiving a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein a paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE.

[0075] At block 710, the operations 700 continue with sending a message associated with the first USIM to the UE via a PDU session via the network of the second USIM or another PDU session.

[0076] According to aspects of the present disclosure, the PPUID in block 705 may be determined based on a higher layer operating system (HLOS) identifier (ID) of the UE.

[0077] In aspects of the present disclosure, the PPUID in block 705 may be determined based on an application identifier (ID) of the UE:

[0078] According to aspects of the present disclosure, the PPUID in block 705 may be determined by a user data manager (UDM) of the network of the first USIM.

[0079] In aspects of the present disclosure, the message of block 710 may include a paging message.

[0080] According to aspects of the present disclosure, the message of block 710 may include a push notification, and the paging server may receive the push notification from an access management function (AMF) of the network of the first USIM.

[0081] In aspects of the present disclosure, receiving the PPUID as in block 705 may include receiving the PPUID in a paging coordination container.

[0082] Figure 8 8 is a flow diagram illustrating example operations 800 for wireless communication in accordance with certain aspects of the present disclosure. Operations 800 may be performed, for example, by an access and mobility management function (AMF) in a BS (e.g., such as BS 110a in wireless communication network 100). Operations 800 may be complementary operations of operations 300 performed by the BS for a UE. Operations 800 may be implemented as a process in one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the BS in operation 700 may be performed, for example, via one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface of one or more processors (eg, controller / processor 240) that obtain and / or output signals.

[0083] At block 805, operations 800 may begin by receiving, from a user equipment (UE) via a network of a first universal subscriber identifier module (USIM) of the UE, a request to register for paging events in a registration request message.

[0084] At block 810, operations 800 continue by sending an indication of a paging server to the UE in response to the request.

[0085] At block 815, operations 800 continue with sending a message associated with the network of the first USIM to the UE via the network of the second USIM.

[0086] According to aspects of the present disclosure, the message of block 815 may include a paging message.

[0087] In aspects of the present disclosure, the message of block 815 may include a push notification:

[0088] According to aspects of the present disclosure, the request of block 805 may include a paging public user identifier (PPUID) in a paging coordination container.

[0089] In various aspects of the present disclosure, the first response message of block 410 may be a first medium access control (MAC) control element (CE), and the BS may send a second MAC CE in reply to the first response message to the UE. The PPUID may be determined based on a higher layer operating system (HLOS) identifier (ID) of the UE, an application identifier (ID) of the UE, or a UDM of the network through the first USIM.

[0090] According to various aspects of the present disclosure, for a UE that registers for a paging coordination event, the network may decide to select a centralized AMF to serve the UE. In this case, after receiving a registration request message (e.g., Figure 5 554 of or in Figure 6 652 in ), the initial AMF may trigger the AMF reallocation procedure as described in clause 4.2.2.2.3 of TS 23.502 which is publicly available from www.3gpp.org.

[0091] In various aspects of the present disclosure, after receiving a paging coordination event registration success message (e.g., Figure 5 560 of them or Figure 6), the UE may turn (e.g., re-tune) to the network associated with the second USIM. If paging on the network associated with the first USIM is not received, the UE may stay in the network associated with the second USIM without moving to the network associated with the first USIM. Thus, the UE may avoid listening to paging and performing a mobility registration update procedure on the network associated with the first USIM.

[0092] According to various aspects of the present disclosure, when downlink (DL) data is received in the UPF for the UE to receive via the first USIM, the UPF may initiate extended buffering for the UE. The UPF may also start a timer with a relatively long value to determine whether the buffered data in the UPF is valid for delivery to the UE.

[0093] If a Downlink Data Notification (DDN) for the first USIM is received in the AMF, the AMF may send a push notification with PPUID to the paging server A. The paging server sends the push notification to USIM B via a user plane connection.

[0094] Fig. 9 900 is a call flow illustrating communications between a UE 910, an AMF 920 of a network associated with a first USIM 912 of the UE, a service management function (SMF) 922 of the network associated with the first USIM of the UE, a user plane function (UPF) 924 of the network associated with the first USIM of the UE, an AMF 930 of a network associated with a second USIM 914 of the UE, a service management function (SMF) 932 of a network associated with the second USIM of the UE, a user plane function (UPF) 934 of a network associated with the second USIM of the UE, and a paging server 940 of a network associated with the first USIM of the UE according to aspects of the present disclosure. At 950, when the UPF of the network associated with the first USIM obtains downlink data for the UE, the UE has registered for paging coordination with the network via the second USIM 914. At 952, the UPF sends a notification about the data to the SMF 922 of the network associated with the first USIM. At 954, the SMF 922 sends the notification and the data to the AMF 920. At 956, the AMF 920 of the network associated with the first USIM sends a push notification about the downlink data with the PPUID of the UE to the paging server 940. At 958, upon receiving the push notification, the paging server 940 sends a push notification with the PPUID to the UPF 934 associated with the network of the second USIM 914 of the UE, which contacts the second USIM about the downlink data. The second USIM delivers the notification to the upper layer 916 of the UE.

[0095] According to aspects of the present disclosure, when the UE receives a push notification for the second USIM via the user plane (e.g., Fig. 9 958 in the figure), if the UE decides to continue by requesting network service via the first USIM, the UE will turn to (e.g., re-tune) the network associated with the first USIM and send a NAS message to the AMF of the network associated with the first USIM to restore the signaling connection to the network.

[0096] In various aspects of the present disclosure, if the UE moves or has moved out of the registration area assigned to the network associated with the first USIM, the first USIM may send the registration area with an active flag to the AMF. After the registration process, the UE may then send a service request (SR) with a paging response.

[0097] According to aspects of the present disclosure, if the UE is still within the registration area allocated for the network associated with the first USIM, the first USIM may send a service request NAS message directly to the AMF.

[0098] In various aspects of the present disclosure, if a centralized AMF is selected or has been selected to serve the UE, the centralized AMF may allocate a registration area with "all PLMNs" to the UE; in this case, when the UE returns from the second USIM to the first USIM, the UE may send a service request NAS message directly to the AMF.

[0099] Fig.10 1000 is a call flow illustrating communications between a UE 1010, an AMF 1020 of a network associated with a first USIM 1012 of the UE, an AMF 1030 of a network associated with a second USIM 1014 of the UE, a UDM 1036 of a network associated with the second USIM of the UE, and a paging server 1040 of a network associated with the first USIM of the UE according to aspects of the present disclosure. At 1050, the UE receives a push notification from the paging server regarding downlink data for the UE to receive via the network associated with the first USIM 1012. At 1052, the UE sends NAS signaling to the AMF associated with the first USIM. At 1054, the UE receives the downlink data.

[0100] Fig.11 The invention shows that it may include a system configured to perform operations for the techniques disclosed herein (such as Figure 31100 includes various components (e.g., corresponding to means plus function components) of the communication device 1100 and the operation shown in FIG. 1102. The communication device 1100 includes a processing system 1102 coupled to a transceiver 1108. The transceiver 1108 is configured to send and receive signals for the communication device 1100 via an antenna 1110, such as various signals as described herein. The processing system 1102 may be configured to perform processing functions for the communication device 1100, including processing signals received by and / or to be sent by the communication device 1100.

[0101] The processing system 1102 includes a processor 1104 coupled to a computer-readable medium / memory 1112 via a bus 606. In some aspects, the computer-readable medium / memory 1112 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1104, cause the processor 1104 to perform Figure 3 , or other operations for performing various techniques discussed herein for a multi-USIM UE or a C-RAT capable UE to receive and respond to a page from a network of a first USIM by receiving a page (from a network of a first USIM) on a receiver active on a network of a second USIM of the UE without activating a receiver on the network. In certain aspects, the computer-readable medium / memory 1112 stores code 1114 for sending a request for registration paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; code 1115 for sending a paging public user identifier (PPUID) of the UE to a paging server via a network of the second USIM of the UE in a protocol data unit (PDU) session, wherein the paging server is associated with the network of the first USIM; and code 1116 for receiving a message associated with the first USIM via a PDU session or another PDU session via a network of the second USIM. In certain aspects, the processor 1104 has circuitry configured to implement the code stored in the computer-readable medium / memory 1112. Processor 1104 includes a circuit 1120 for sending a request for registration of paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; a circuit 1122 for sending a paging public user identifier (PPUID) of the UE to a paging server via a network of a second USIM of the UE in a protocol data unit (PDU) session, wherein the paging server is associated with the network of the first USIM; and a circuit for receiving a message associated with the first USIM via a PDU session of the network of the second USIM or another PDU session.

[0102] Fig.12The invention shows that it may include a system configured to perform operations for the techniques disclosed herein (such as Figure 7 and Figure 8 1200 includes various components (e.g., corresponding to means plus function components) of the communication device 1200 and the operation shown in FIG. 1200. The communication device 1200 includes a processing system 1202 coupled to a transceiver 1208. The transceiver 1208 is configured to send and receive signals for the communication device 1200 via an antenna 1210, such as various signals as described herein. The processing system 1202 can be configured to perform processing functions for the communication device 1200, including processing signals received by the communication device 1200 and / or to be sent by it.

[0103] The processing system 1202 includes a processor 1204 coupled to a computer readable medium / memory 1212 via a bus 706. In some aspects, the computer readable medium / memory 1212 is configured to store instructions (e.g., computer executable code) that, when executed by the processor 1204, cause the processor 1204 to perform Figure 7 , Figure 8The operations shown in , or other operations for performing the various techniques discussed herein for a multi-USIM UE or a C-RAT capable UE to receive and respond to a page from a network of a first USIM by receiving a page (from a network of a first USIM) on a receiver on a network of a second USIM active on the UE without activating a receiver on that network. In certain aspects, the computer-readable medium / memory 1212 stores code 1214 for receiving a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein a paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE; code 1215 for sending a message associated with the first USIM to the UE via the PDU session or another PDU session via the network of the second USIM; code 1216 for receiving a request to register for paging events in a registration request message from the UE via the network of the first universal subscriber identifier module (USIM) of the user equipment (UE); code 1217 for sending an indication of the paging server to the UE in response to the request; and code 1218 for sending a message associated with the network of the first USIM to the UE via the network of the second USIM. In certain aspects, the processor 1204 has circuitry configured to implement the code stored in the computer-readable medium / memory 1212. Processor 1204 includes a circuit 1220 for receiving a request for a registration paging event in a registration request message from a user equipment (UE) via a network of a first universal subscriber identifier module (USIM) of the UE; a circuit 1222 for sending a message associated with the first USIM to the UE via a PDU session or another PDU session via a network of a second USIM; and a circuit 1224 for receiving a request for a registration paging event in a registration request message from the UE via a network of the first universal subscriber identifier module (USIM) of the user equipment (UE); a circuit 1225 for sending an indication of a paging server to the UE in response to the request; and a circuit 1226 for sending a message associated with the network of the first USIM to the UE via the network of the second USIM.

[0104] The techniques described herein can be used for various wireless communication technologies, such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are generally used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks may implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0105] The technology described herein can be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For the sake of clarity, although the terms commonly associated with 3G, 4G and / or 5G wireless technologies may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other communication systems based on generations.

[0106] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and BS, next generation NodeB (gNB or gNodeB), access point (AP), distributed unit (DU), carrier or transmit receive point (TRP) can be used interchangeably. BS can provide communication coverage for macro cells, pico cells, femto cells and / or other types of cells. Macro cells can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions. Pico cells can cover relatively small geographic areas and can allow unrestricted access by UEs with service subscriptions. Femto cells can cover relatively small geographic areas (e.g., homes) and can allow limited access by UEs associated with the femto cells (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.). BSs for macro cells can be referred to as macro BSs. BSs for pico cells can be referred to as pico BSs. BSs for femto cells can be referred to as femto BSs or home BSs.

[0107] UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer premises equipment (CPE), a cellular phone, a smart phone, 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, an appliance, a medical device or medical equipment, a biometric sensor / device, a wearable device (such as a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide, for example, a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0108] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also often referred to as tones, bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain under OFDM and in the time domain under SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of the subcarriers can be 15kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal FFT size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband may cover 1.08 MHz (ie, 6 RBs), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively.In LTE, the basic transmission time interval (TTI) or packet duration is a 1 ms subframe.

[0109] NR can utilize OFDM with CP on the uplink and downlink and includes support for half-duplex operation using TDD. In NR, the subframe is still 1ms, but the basic TTI is called a time slot. The subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16...time slots), depending on the subcarrier spacing. NR RB is 12 continuous frequency subcarriers. NR can support a base subcarrier spacing of 15KHz, and other subcarrier spacings can be defined relative to the base subcarrier spacing, such as 30kHz, 60kHz, 120kHz, 240kHz, etc. The symbol and time slot lengths scale with the subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, the MIMO configuration in DL can support up to 8 transmit antennas, with multi-layer DL transmissions of up to 8 streams and up to 2 streams per UE. In some examples, multi-layer transmissions of up to 2 streams per UE can be supported. Up to 8 serving cells can be used to support the aggregation of multiple cells.

[0110] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., BS) allocates resources for communication between some or all devices and equipment within its service area or cell. A scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, subordinate entities utilize resources allocated by the scheduling entity. The base station is not the only entity that can be used as a scheduling entity. In some examples, a UE may be used as a scheduling entity, and resources for one or more subordinate entities (e.g., one or more other UEs) may be scheduled, and other UEs may utilize resources scheduled by the UE for wireless communication. In some examples, a UE may be used as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In a mesh network example, UEs may communicate directly with each other in addition to communicating with a scheduling entity.

[0111] In some examples, two or more subordinate entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh networks, and / or various other suitable applications. In general, a sidelink signal may refer to a signal transmitted from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some examples, the sidelink signal may be transmitted using a licensed spectrum (unlike wireless local area networks, which typically use unlicensed spectrum).

[0112] The methods disclosed herein include one or more steps or actions for implementing these methods. These method steps and / or actions may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0113] As used herein, a phrase referring to "at least one" of a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0114] As used herein, the term "determine" includes various actions. For example, "determine" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), determining, etc. In addition, "determine" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. In addition, "determine" may include solving, selecting, choosing, establishing, etc.

[0115] The above description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the various aspects shown herein, but are consistent with the entire scope of protection of the language of the claims, wherein, unless otherwise specified, references to elements in the singular form are not intended to represent "one and only one", but rather "one or more". Unless otherwise specifically specified, the term "some" refers to one or more. All structures and functions that are known or to be known to those of ordinary skill in the art and that are equivalent to the elements of the various aspects described throughout this disclosure are hereby expressly incorporated herein by reference, and are intended to be included in the claims. In addition, none of the contents disclosed herein are intended to be dedicated to the public, regardless of whether the disclosure is explicitly recorded in the claims. Unless the phrase "parts for..." is used to explicitly record the claim element, or the phrase "step for..." is used to record the claim element in the case of a method claim, the claim element shall not be interpreted according to the provisions of 35 U.S.C. §112 (f).

[0116] The various operations of the above method can be performed by any suitable components capable of performing the corresponding functions. These components may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. Generally, where there are operations shown in the accompanying drawings, those operations may have corresponding paired components plus functional components with similar reference numerals.

[0117] The various illustrative logic blocks, modules and circuits described in conjunction with the present disclosure may be implemented or executed using 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 (PLD), 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 alternatively, the processor may also be any commercially available processor, controller, microcontroller or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0118] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. The bus may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system. The bus may link various circuits together, including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter and other devices to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user terminal 120 (see Figure 1 ), a user interface (e.g., buttons, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described in detail. The processor may be implemented using one or more general purpose processors and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize that how to best implement the described functionality for the processing system depends on the specific application and the overall design constraints imposed on the entire system.

[0119] If implemented in software, the functions may be stored on a computer-readable medium or transmitted via a computer-readable medium as one or more instructions or codes. Software should be broadly interpreted as instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, and communication media include any media that facilitates the transmission of a computer program from one location to another. The processor may be responsible for managing the bus and general processing, including the execution of software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, a storage medium may be integrated into a processor. For example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon separated from a wireless node, all of which may be accessed by a processor via a bus interface. Alternatively, or additionally, a machine-readable medium or any portion thereof may be integrated into a processor, such as a situation that may be associated with a cache and / or a general register file. Examples of machine-readable storage media may include, for example, RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media or any combination thereof. The machine-readable medium may be implemented in a computer program product.

[0120] A software module may include a single instruction, or many instructions, and may be distributed across multiple different code segments, between different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may exist in a single storage device or may be distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some of the instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by a processor. When referring to the functions of the following software modules, it should be understood that such functions are implemented by a processor when executing instructions from the software module.

[0121] Furthermore, any connection may properly be referred to as a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared (IR), radio and microwave), the definition of medium includes the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio and microwave). As used herein, disk and disc include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk and Disks, where magnetic disks typically reproduce data magnetically, and optical disks reproduce data optically with lasers. Thus, in some aspects, computer readable media may include non-transitory computer readable media (e.g., tangible media). Additionally, for other aspects, computer readable media may include transitory computer readable media (e.g., signals). Combinations of the above should also be included within the scope of computer readable media.

[0122] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, for performing the operations described herein and Figure 3 , Figure 7 and / or Figure 8 Instructions for the operations shown.

[0123] In addition, it should be appreciated that, when appropriate, the module and / or other suitable components for executing the methods and techniques described herein can be downloaded and / or otherwise obtained by a user terminal and / or a base station. For example, such a device can be coupled to a server to facilitate the transmission of the components for executing the methods described herein. Alternatively, the various methods described herein can be provided via a storage component (e.g., RAM, ROM, a physical storage medium such as a compact disk (CD) or a floppy disk, etc.), so that when being coupled to the device or providing the storage component to the device, the user terminal and / or the base station can obtain the various methods. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be utilized.

[0124] It is to be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: sending a request to register for paging events in a registration request message to an access and management function (AMF) of a network of a first universal subscriber identifier module (USIM) of the UE; sending a paging public user identifier (PPUID) of the UE via a network of a second USIM of the UE to a paging server associated with a network of the first USIM in a protocol data unit (PDU) session; as well as A message associated with the first USIM is received via the PDU session or another PDU session via the network of the second USIM.

2. The method of claim 1, wherein: The request to register for paging events includes the PPUID of the UE.

3. The method of claim 2, wherein: The request to register for paging events includes the PPUID in a paging coordination container.

4. The method of claim 1, further comprising determining the PPUID based on a higher layer operating system (HLOS) identifier (ID) of the UE.

5. The method of claim 1, further comprising determining the PPUID based on an application identifier (ID) of the UE.

6. The method of claim 1, further comprising receiving the PPUID from a User Data Manager (UDM) of a network of the first USIM.

7. The method of claim 1, wherein: The message comprises a paging message from the paging server.

8. The method of claim 1, wherein: The message includes a data transmission.

9. The method of claim 1, wherein: Sending the PPUID includes sending the PPUID in a paging coordination container.

10. The method of claim 1, further comprising, after sending the PPUID to the paging server and before receiving the message, restricting monitoring of the network of the first USIM for a period longer than a configured discontinuous reception (DRX) cycle of the UE.

11. A method for wireless communication performed by a paging server, comprising: receiving a paging public user identifier (PPUID) of a user equipment (UE) in a protocol data unit (PDU) session, wherein the paging server is associated with a first universal subscriber identifier module (USIM) of the UE, and wherein the PDU session is via a network of a second USIM of the UE; and A message associated with the first USIM is sent to the UE via the PDU session or another PDU session of the network via the second USIM.

12. The method of claim 11, wherein: The PPUID is determined based on a higher layer operating system (HLOS) identifier (ID) of the UE.

13. The method of claim 11, wherein: The PPUID is determined based on an application identifier (ID) of the UE.

14. The method of claim 11, wherein: The PPUID is determined by a User Data Manager (UDM) of the network of the first USIM.

15. The method of claim 11, wherein: The message comprises a paging message.

16. The method of claim 11, wherein: The message comprises a push notification, and the method further comprises receiving the push notification from an Access and Mobility Management Function (AMF) of a network of the first USIM.

17. The method of claim 11, wherein: Receiving the PPUID includes receiving the PPUID in a paging coordination container.

18. A method for wireless communication performed by an access and management function (AMF), comprising: receiving, via a network of a first universal subscriber identifier module (USIM) of a user equipment (UE), a request to register for a paging event in a registration request message from the UE; sending an indication of a paging server to the UE in response to the request; as well as A message associated with the network of the first USIM is sent to the UE via the network of the second USIM.

19. The method of claim 18, wherein: The message comprises a paging message.

20. The method of claim 18, wherein: The message includes a push notification.

21. The method of claim 18, wherein: The request includes a paging public user identifier (PPUID) in a paging coordination container.

22. The method of claim 21, wherein: The PPUID is determined based on a higher layer operating system (HLOS) identifier (ID) of the UE.

23. The method of claim 21, wherein: The PPUID is determined based on an application identifier (ID) of the UE.

24. The method of claim 21, wherein: The PPUID is determined by a User Data Manager (UDM) of the network of the first USIM.

Images